Liquid-and-gas tube-and-shell heat exchanger with automatic control system for heat exchange process control

FIELD: machine building.

SUBSTANCE: automatic keeping of a heat carrier temperature inside a tube within the specified range is performed. A liquid-and-gas tube-and-shell heat exchanger with an automatic control system for the heat exchange process control comprises a casing from two concentrically set cylinders with heat exchanging tubes installed in-between, the upper part of the central tube is fitted with a gas damper with the output end of its axis being connected to a drive mechanism which is presented as a lever coupled with a heat controller by a rod.

EFFECT: development of design for a tube-and-shell liquid-and-gas heat exchanger with automatic control.

4 dwg

 

The invention relates to the field of heat transfer and can be used mainly in the field of mechanical engineering to transfer heat from exhaust gases of internal combustion engines (ice) to the fluid utilization circuit and further to the recipients set out in the core systems, both stationary and self-propelled machines to maintain them in optimum thermal conditions.

It is known that in the operation of machines in conditions of low ambient temperature decreases thermal regime of the units of the power pack installation, increases the viscosity of the oil, which causes a corresponding increase of power losses.

For example, according to some researchers, the power losses in the transmission of tractors in the winter operation can be achieved in the first minute of driving 80-90% of the nominal power, which is being developed by the engine. The result is increased wear and fuel consumption, reduces productivity and increases the cost of production. At the same time from the exhaust gases in the environment can release up to 30% of heat burned in the engine fuel.

Currently, the practical use of the heat of exhaust gases of internal combustion engine has found wide application in Autonomous thermal power plants. These plants produce electricity is simultaneously utilize the heat of exhaust gases (Patent RU 2007606 C1, F02G 5/04; Patent RU 2162534 C1. F02G 5/02. 1/043. F02 65/00). Heat in the above patents is carried out by means of gas-liquid heat exchangers. Circulating in the circuits of the heat exchanger fluid can be used to transfer heat to the destination.

The closest technical solution adopted for the prototype, is a shell-and-tube heat exchanger (Patent RU 2395774 C1, F28D 7/00).

Shell-and-tube heat exchanger includes a housing made of two concentric spaced cylinders, between which the heat exchange tubes with a cross-section of trapezoidal shape. Pipe fixed in the lattice, with the location of their ends radially around the inner cylinder, made in the form of a removable sleeve. The heat exchanger is equipped with inlet and outlet manifolds for the on-line environment, as well as input and output connections to the outside environment.

The disadvantage of this design of heat exchanger is the lack of auto-regulate its output depending on the level of heat that can lead to overheating of the coolant and the failure of the heat exchanger.

The quantity of heat which is necessary to bring to various systems of the engine and transmission machines in the warm-up period depends on their thermal state of temperature on the action and mode of operation of the engine. For example, after starting the engine and during his work in the cold time of the year with the aim of reducing the time of warm-up and as a consequence, reduce fuel consumption, increase productivity and improve working conditions of the driver requires a large amount of heat, which is necessary to bring to the cooling system and the lubrication system of the engine from an external source. As such a source, you can use the exhaust heat. In addition, the exhaust heat can be used for heating and maintaining thermal regime of the gearbox and axles machines that will allow us to reduce the power losses in them and reduce the fuel consumption by the engine.

Technical problem which is solved in the present device, is the design of shell-and-tube gas-liquid heat exchanger with automatic regulation of its output depending on the amount of heat which is necessary to bring to the different systems and the parts of the machine in different seasons and at different degrees of engine load. The problem is solved in that in the gas-liquid shell-and-tube heat exchanger with automatic process control system of heat exchange containing casing of two concentric cylinders located between the to the that are heat-exchange tubes, enshrined in lattices with the location of the ends of the pipe radius around the inner cylinder, a casing provided with inlet and outlet manifolds for the on-line environment, while the outer cylinder is made corrugated and is additionally equipped with an external insulating sheath. The inner cylinder represents the portion of the exhaust pipe - the Central pipe, which consists of two parts removable top and bottom fixed. Moreover, the fixed part is welded to the lid of the lower tube of the heat exchanger so that the cut of the pipe is above the surface of the lower tube and the upper part of the Central pipe is freely mounted on the lower part of the Central pipe and welded to the flange that attaches to the top tube. In the upper part of the Central pipe has a gas valve output end of the axis which is connected to the drive mechanism, representing a lever connected to a thermostat by using traction. thermostat includes a thermo sensor, two shoulders lever, bearing two shoulders of the lever, the spring thermostat, adjusting screw with lock nut and the cover. Thermo sensor is mounted so that its sensing element is in the input manifold and washed entering the heat exchanger tube environment. Before the gas SaaS is oncol in the upper part of the Central pipe drilled holes, which perform the function of pipe supply tube environment. After the gas valve in the top of the Central tube also drilled holes, which act as pipe outlet tube environment. The area of the holes before the gas valve more than 10-15% of the cross-sectional area of the Central pipe, the vent area after the gas valve is also more than 10-15% of the cross-sectional area of the Central pipe. The gas valve is set at the minimum possible distance from thermostat, taking into account holes perform the function of the pipe outlet tube environment. Annulus separated by partitions, the number of which is determined by the performance and layout dimensions of the heat exchanger. Walls and openings that perform the function of inlet and outlet nozzles of the shell environment, form a cooling path shell environment. The temperature of the gas environment is maintained at a certain level by increasing or decreasing the volume of the shell environment, participating in the heat exchange, by changing the position of the gas valve through the impact of the stock thermo sensor controller through two shoulders arm to the drive mechanism.

The structure and operation of the present invention are explained in the following illustrations:

- 1. Longitudinal is azres heat exchanger.

- 2. Type A.

- 3. The exchanger with closed gas valve.

- 4. The exchanger with an open gas valve.

The proposed construction of a gas-liquid shell-and-tube heat exchanger with automatic process control system of heat exchange comprises: a casing 1; the inlet manifold 2; output manifold 3; heat exchange tubes 4, the upper tube 5; the lower tube 6; disc covers 7, 8; the upper part of the Central pipe 9; the lower part of the Central pipe 10; flange 11; pins 12 and nuts 13; strip metalloinvest 14; a gas valve 15; the holes to the damper 16; holes after the valve 17; partitions annulus 18; screws 19; axis damper 20; bushings 21; arm 22; traction 23; thermostat Assembly 24; thermo sensor controller 25; two shoulders lever thermostat 26; supports two shoulders lever thermostat 27; spring thermostat 28; an adjusting screw of thermostat 29; the lock nut of the adjusting screw of thermostat 30; the spring seat Adjuster 31; cover of thermostat 32; insulating shell casing 33; pipe supply line environment 34; pipe outlet pipe environment 35.

Figure 3, 4 additionally depicts the entrance to the heat exchanger liquid - gas environment 36; the output of the heat exchanger fluid 37; heat is bennik engine exhaust - shell environment 38; exhaust emissions into the atmosphere 39.

The casing 1 of the heat exchanger is made in the form of a corrugated cylinder and welded to the side surface of the input 2 and output 3 collectors. The corrugated shape of the casing is required to compensate for the increase in the linear dimensions of the heat exchange tubes 4 when heated. Insulating shell casing 33 serves to reduce heat loss and increase the efficiency of heat exchange process. The tubes 4 are welded to the tube grids 5 and 6. The surface area of the heat exchanging tubes is determined by calculation according to known methods with regard to power teplopotreblenija.

To the top of the pipe grate 5 and the lower lattice 6 is welded to the disc shaped cover 7 and 8, respectively, resulting in the formation of the input 2 and output 3 headers.

The heat exchanger is mounted on the section of the exhaust system of the engine, preferably immediately after the turbine, if it is there, or closer to the exhaust hole, the exhaust manifolds. The Central pipe heat exchanger consists of two parts: the upper part 9 and a bottom 10. Moreover, the lower part of the pipe 10 is welded to the cover 8 and the tube sheet holes 6 of the output manifold 3 so that the cut of the pipe was above the surface of the lower tube. The upper part of the Central pipe 9 is freely fitted on the protruding lower the actu pipe 10 and is welded to the flange 11, which is attached to the lid inlet manifold 2 via pins 12 and nuts 13. To avoid leakage of gases between the flange and the top of the collector is installed metalloobektov strip 14.

In the upper part of the Central pipe is equipped with a gas valve 15, to which the pipe drilled holes 16, and after - holes 17. Holes 16 function input pipe annulus, and the holes 17 is a function of the outlet pipe from the annulus. The gas valve is set at the minimum possible distance from thermostat 24, depending on the distance required for the performance of the holes 17.

The total area of the holes 16 and 17 must be equal, and the value of each of the areas taking into account losses in the resistance, which can be created by the gas valve and the holes should be 10-15% more cross-sectional area of the Central pipe. Annular space is divided by partitions 18, forming a cooling path shell environment with the holes 16 and 17. The number of partitions 18 is determined by the performance and layout dimensions of the heat exchanger.

Gas valve 15 by means of screws or rivets 19 is attached to the axis of the valve 20. The axis rotates in the sleeve 21, which is welded to the top of the Central tube 9. Output to the EC axis 20 is connected with the drive mechanism of the gas damper 15. The drive mechanism is a lever 22 which is fixed rod 23. Rod 23 passes through the annular gap between the inlet manifold and the Central pipe, and then through the hole in the flange 11 in the controller 24.

The controller 24 includes a thermo sensor 25, for example thermo sensor TD-2, which has a complete departure stem 8-10 mm at a temperature of 85-90°C, two shoulders lever 26, the support 27, the spring 28, the adjusting screw 29 with the lock nut 30 and the cover 32.

Thermo sensor 25 is installed in the inlet manifold 2 so that its sensitive element is washed shell environment (hereinafter fluid)coming from teplopotreblenija. Seal thermo sensor 25 is carried out using o-rings. To cover the inlet manifold 2 thermo sensor 25 is pressed by the flange 11. The stock thermo sensor 25 extends into the body of the controller 24 through the hole in the flange 11. Two shoulders lever 26 is fixed on a support 27 in the form of a rocker. In the lower right part of the two shoulders of the lever 26 abuts the rod thermo sensor 25. To the upper right part of the two shoulders of the lever 26 is welded to a support 31 for fixing the spring 28. To the left side of the two shoulders of the lever 26 is fixed rod 23 of the drive mechanism of the gas damper 15.

thermostat 24 is closed by a cover 32, which is mounted an adjusting screw 29 with the lock nut 30 and what ruinas 28.

The heat exchanger in addition to the main purpose can act as a silencer.

The heat exchanger is multi-way and works on traditional counterflow.

In the initial state, after starting a cold engine, the stock thermo sensor 25 is retracted into the casing. The right part of the two shoulders of the lever 26 by means of a spring 28 is pressed against the end face of the rod thermo sensor 25. Gas valve 15 is in the closed position (figure 3). Exhaust gases not being able to move through the Central tube of the heat exchanger, passes through the holes 16 of the upper part of the Central pipe and fall into the first course of the annulus, which is limited to the lower tube sheet 6 and the partition wall 18. Next, the exhaust gases change direction to the opposite one and get to the next turn annulus, limited only by partitions 18, and then again change direction and so on all moves annulus of the heat exchanger. Reaching the last move annulus bounded upper tube plate 5 and the last partition 18, the exhaust gases through the openings 17 fall back into the Central tube and then through the exhaust system are released into the environment. During the movement of exhaust gases through the annular space is talop the transfer from exhaust gas to liquid circulating in the heat exchange tubes. Circulating in the heat exchanger the liquid is heated and then heat accumulated fluid is supplied directly to the recipients (for example, installed in the liquid cooling system and the lubrication system of the engine, the gearbox, leading the bridges and the like).

When reaching into the input manifold 2 fluid temperature 70-75°With the stem of the sensor 25, overcoming the resistance of spring 28 begins to move up, acts on the lever arm 26 and through the rod 23 on the lever 22 and the axis 20 of the gas damper 15. Gas valve 15 starts to open. At the same time part of the exhaust gas enters the annulus of the heat exchanger, and part through the Central tube and then through the exhaust system vented to the atmosphere. Upon reaching a predetermined temperature (85-90°C) valve opens fully. In this case, the exhaust gases are released into the atmosphere, bypassing the annulus of the heat exchanger. Heat transfer is stopped (figure 4).

With the lowering of temperature of the liquid below the specified values of the stock thermo sensor 25 begins to move down, at the same time the spring 28 acts on the lever arm 26 and through the rod 23 on the axis 20 of the gas damper 15. Gas valve 15 starts to close. The exhaust gases will again begin to flow into megtron the e space heat transfer is resumed. Thus, automatically maintaining the temperature of the gas environment within the specified limits.

If necessary to disassemble the heat exchanger Unscrew the nut 13, with which the flange 11 is attached to the inlet manifold 2. Remove the flange with the upper part of the Central tube 9, the gas valve 15 with a drive mechanism and a controller 24. As a result, the possibility of free access to the annular space, which is convenient for maintenance and repair. In addition, this design provides access to the gas valve 15, the lever 22, deadlift 23 and thermo sensor 25.

Gas-liquid shell-and-tube heat exchanger with automatic process control system of heat exchange containing casing of two concentrically arranged cylinders, between which the heat exchange tubes, which are fixed in the lattice, with the location of the ends of the pipe radius around the inner cylinder, a casing provided with inlet and outlet manifolds for the on-line environment, characterized in that the outer cylinder is made corrugated and is additionally equipped with an external insulating sheath, the inner cylinder represents the portion of the exhaust pipe - the Central pipe, which consists of two parts removable top and bottom fixed, when the eating of fixed welded to the lid of the bottom tube of the heat exchanger so that section of the pipe is above the surface of the lower tube and the upper part of the Central pipe is freely mounted on the lower part of the Central pipe and welded to the flange, which is attached to the top tube in the upper part of the Central pipe has a gas valve output end of the axis which is connected to the drive mechanism, representing a lever connected to a thermostat by using traction, thermostat includes a thermo sensor, two shoulders lever, bearing two shoulders of the lever, the spring thermostat, adjusting screw with lock nut and cap, thermo sensor is mounted so that its sensing element is in the input manifold and washed entering the heat exchanger tube environment, before the gas valve in the top of the Central pipe drilled holes, which act as pipe supply tube environment, after the gas valve in the top of the Central tube also drilled holes, which act as pipe outlet tube environment, the area of the holes before the gas valve more than 10-15% of the cross-sectional area of the Central pipe, the vent area after the gas valve is also more than 10-15% of the cross-sectional area of the Central pipe, gas valve installed on m is the minimum possible distance from thermostat, taking into account holes perform the function of the pipe outlet tube environment, annulus separated by partitions, the number of which is determined by the performance and layout dimensions of the heat exchanger, partitions and openings that perform the function of inlet and outlet nozzles of the shell environment, form a cooling path shell environment, the temperature of the gas environment is maintained at a certain level by increasing or decreasing the volume of the shell environment, participating in the heat exchange, by changing the position of the gas valve through the impact of the stock thermo sensor controller through two shoulders arm to the drive mechanism.



 

Same patents:

FIELD: machine building.

SUBSTANCE: heat exchanger system through which the liquid flows comprises a heat exchanger with liquid inlet and outlet, a bypass valve with liquid inlet and outlet and a self-cleaning filter with a liquid inlet and two liquid outlets; one of the latter is meant for the filtered liquid and the other - for the unfiltered liquid. The filtered liquid outlet is connected to the heat exchanger inlet and the unfiltered liquid outlet - to the valve inlet, the heat exchanger outlet is connected downstream regarding the valve outlet.

EFFECT: heat exchanger clogging up is excluded.

9 cl, 3 dwg

FIELD: heating.

SUBSTANCE: during adjustment of a sealing gap depending on temperature between a movable seal and a rotary rotor of a regenerative heat exchanger, at least one adjustment device is used, comprising several rod elements, due to interaction of which with each other sliding adjustment of the seal is developed, at the same time at least two of these rod elements are controlled separately via according chambers with the help of a control medium of alternating temperature, so that these rod elements are exposed to different temperatures. The invention also relates to a regenerative heat exchanger, where such an adjustment device may be used, and the method to adjust sealing gaps.

EFFECT: development of a simple automatic and cheap method to adjust the seal in the regenerative heat exchanger.

25 cl, 5 dwg

Heat exchanger // 2363904

FIELD: heat engineering.

SUBSTANCE: invention relates to heat engineering, particularly to heat exchangers and can be used in heat exchanging or heat-transmitting devices. Heat exchanger with case, which allows primary inlet connection, primary exhaust connection, repeated inlet connection and repeated exhaust connection, between primary inlet connection and primary exhaust connection it is located primary flow path of primary side, and between repeated inlet connection and repeated exhaust connection it is located repeated flow path of repeated side, herewith primary flow path is in condition of heat exchange with repeated flow path.

EFFECT: improvement of heat exchanger parametres, achieved ensured by auxiliary control unit passes through the intermediate space, located between primary flow path and in repeated flow path.

16 cl, 4 dwg

FIELD: heating systems.

SUBSTANCE: automatic gas heater control device relates to control and monitoring systems. It contains the following parts connected to each other: controller, relay switching panel with electromagnetic relays, voltage converter, terminal plate, and LED indicators with built-in resistors. Controller is connected to LED indicators through the terminal plate. Controller, relay switching panel, and voltage converter are connected to terminals for output.

EFFECT: simplifying the design at maintaining the required functional capabilities.

4 cl, 3 dwg, 1 tbl

Heat exchanger // 2334929

FIELD: heating.

SUBSTANCE: invention is referred to thermal engineering and may be used in district heating systems for heating service water. Heat exchanger contains primary circuit channel located between inlet and outlet connections, secondary circuit channel located between supply pipeline assembly and return pipeline assembly, heat-conducting device between primary circuit channel and secondary circuit channel, and temperature sensor. Temperature sensor is located between secondary circuit channels close to connection with return pipeline. Besides, temperature sensor contacts with heat-conducting device or situates at small distance from it.

EFFECT: space saving in heat exchanger when temperature is measured and good results are achieved.

7 cl, 5 dwg

FIELD: systems for automatic control of technological processes for cooling natural gas with use of apparatus for air cooling, possibly in after-compressing stations of gas fields in northernmost regions for sustaining optimal operation modes of air cooling apparatus for natural gas.

SUBSTANCE: system includes frequency-controlled drive unit; unit for processing measurement information and for automatic control; temperature pickups; electronic unit of temperature pickups; computing unit; two actuating devices; blowers. Signals of temperature pickups are fed through electronic unit to unit for processing measurement information and for automatic control. Said unit for processing measurement information judges (on base of inlet signals) what blowers are to be used and sends respective electric signal to computing unit. With the aid of computing unit one actuating device turns on electric motors of blowers due to their alternative connection with frequency-controlled drive and connects with AC-source electric motors of blowers. Other actuating device controls temperature of walls of heat exchange tubes in all sections of air cooling apparatus of gas and connects with frequency-controlled drive electric motor of blower of that section where temperature of walls of heat exchange tubes differs from preset value. After achieving preset temperature value of walls of heat exchange tubes of selected section, apparatus turns off electric motor of blower from frequency-controlled drive and switches it to AC source. Similar operations may be realized for electric motors of blowers if necessary.

EFFECT: simplified system for automatic control of apparatus for air cooling of natural gas.

1 dwg

FIELD: heating systems.

SUBSTANCE: method comprises control of temperature of at least one of secondary flows of fluid in the secondary circuit which outflows from heat exchanger (1) by means of the primary flow in the primary circuit with the use of control members (5) and (11) that control the primary flow under the action of control unit (7), determining the difference of enthalpies of the primary flow that enters heat exchanger (1) and primary flow that leaves heat exchanger (1), measuring the secondary flow, measuring the flow in the primary circuit, and sending the parameters determined to control unit (7) for control of control members (5) and (11). As a result, the primary flow is controlled by the secondary flow so that the power supplied to the heat exchanger with the primary flow is, in fact, equal to the sum of the power required for the heating of the secondary fluid from the initial current temperature up to the specified outlet temperature, power required for the compensation of energy stored in heat exchanger (1), and power losses from heat exchanger (1). The description of the device for control of water temperature is also presented.

EFFECT: enhanced reliability.

13 cl, 9 dwg

FIELD: heating engineering.

SUBSTANCE: space where surface of condensation locates is brought into communication with steam source and with atmosphere. Heat from surface of condensation is removed to group of individual heat consumers in such a way that heat comes to one group of consumers after another group is supplied with it due to the fact that space where surface of condensation locates is separated to a number of cavities relating in series to each other. The cavities form channel, which communicates steam source with atmosphere. Heat from parts of surface of condensation disposed at different cavities is removed separately each from another to different consumers. Device for realization of the method has vapor source connected with inner cavity of heat-exchange apparatus. The inner cavity communicates with atmosphere. Inner surface of heat-exchange apparatus communicates with atmosphere through internal cavity of at least one more heat-exchange apparatus. Heat-exchange apparatuses are connected with heat agent carriers of different consumers of heat. Internal surfaces of heat-exchanges apparatuses form at least one channel elongated in vertical direction.

EFFECT: selective heat supply from surface of condensation.

4 cl, 3 dwg

The invention relates to the field of water supply and heat and can be used in systems backbone networks water and heating

The invention relates to the regulation of the mode of heat exchangers operating in cyclic mode switching threads, and can be used to stabilize the switching temperature regenerator units for separation of gas mixtures by the method of deep cooling

FIELD: machine building.

SUBSTANCE: gas compressing and drying device comprises a multistage compressor with a low pressure stage, a high pressure stage and a delivery branch pipe, and an adsorption dehumidifier with a drying zone and a regeneration zone; at that an intercooler is set between the low pressure stage and the high pressure stage. The device is additionally equipped by a heat exchanger comprising a main chamber with an inlet part and outlet part for the first primary fluid medium, and the ends of the heat exchanger tubes are connected to a separate input chamber and output chamber for each tube bundle; the first tube bundle forms a cooling circuit of the intercooler used to heat the gas from the high pressure stage for the purpose of adsorption dehumidifier regeneration.

EFFECT: simplified design and installation, reduced prime cost of the device.

14 cl, 4 dwg

FIELD: power industry.

SUBSTANCE: heat exchanger reactor includes a shell (1) in the form of a flattened cone with bottoms (2) and (3), heat carrier input and output pipes (4) and (5) for the tube space, and heat carrier input and output pipes (6) and (7) for the shell space. One bottom, namely bottom (2), features a concavity (8) (if seen from below the bottom) in the centre. The shell (1) features a heat effect compensator (9). A thin-wall hollow cone (10) for flow distribution through small (11) and large (12) orifices is mounted in one bottom, namely bottom (3).

EFFECT: enhanced efficiency of heat exchanger due to even distribution of flow speed through the whole volume, and reduced dimensions.

6 cl, 3 dwg

FIELD: power industry.

SUBSTANCE: heat exchanger of a double-pipe type includes two pipes located with a gap between them, one of which represents a toroid and the other one - a hollow Moebius band. Besides, longitudinal grooves can be made along Moebius band.

EFFECT: improving operating efficiency of a heat exchanger and reducing its dimensions.

2 cl, 2 dwg

FIELD: heating.

SUBSTANCE: in a heat exchanger for an atomising drier, which includes a furnace, a drier housing with an atomiser, heat exchange tubes, according to the proposed invention, the heat exchanger is made in the form of a longitudinally finned tube and a finned tube connected to it, which is located in the furnace mixing chamber; at that, when the tube leaves the furnace, it passes into the shell and tube heat exchanger, the upper part of which consists of a housing in the form of three inclined tubes (15 degrees) leaving the tube, which are changed over to horizontal tubes, on each end of which one rosette is located, and each rosette includes seven tubes of the same diameter; at that, the housing walls are heat insulated with heat insulating material, for example Penofol, and the housing has three inlet and outlet branch pipes of the heated solution and a branch pipe for the tank emptying; at that, the unit is equipped with a pressure gauge, a safety valve and a heat carrier filling valve and has an excess pressure compensation line for heat carrier filling at the operating unit, which is equipped with the valve; besides, in the unit there is a return line of the circulating circuit and an expansion tank with a branch pipe, and the drier atomiser includes a hollow housing, which consists of a cylindrical part with external thread for connection to a nozzle of a liquid supplying distributing pipeline, a conical transient part and a cylindrical part with large size of diametrical section, and with internal threaded surface, and coaxially to the housing, in its lower part there fixed is a nozzle formed with cylindrical surface with external thread interacting with cylindrical part of the housing; at that, cylindrical surface of the nozzle is changed over to a conical surface and ends with an end blind partition wall perpendicular to the housing axis, with an orifice in its centre, which is axisymmetrical to the nozzle and consists of cylindrical and conical orifice holes connected in series; at that, larger diameter of conical hole is located on the blind partition wall of the nozzle; at that, the housing and the nozzle form three internal cylindrical chambers, which are coaxial to each other, and on the nozzle, on the side opposite to liquid supply, there is an additional row of orifices, which are formed at least with three pairs of mutually perpendicular vertical channels for passage of liquid and horizontal channels, which are crossed on a conical side surface of the nozzle and form outlet holes of each of the orifices; at that, pair channels are located at a right angle to each other in longitudinal planes of the housing, and conical side surface of the nozzle is made at angle to the top, which is equal to 90°.

EFFECT: increasing efficiency and economy of the heat exchanger operation and increasing production capacity of the drier.

4 dwg

Reactor // 2475870

FIELD: power industry.

SUBSTANCE: invention is designed for being used as single-block marine high-duty nuclear power plants with high unit power, which operate in varying load mode. Liquid-metal carrier is used in the proposed reactor. Besides, different arrangement patterns of heat transfer to liquid of the second circuit are located inside the reactor housing. The proposed device includes an integral active zone, a nuclear reaction control system and a protection system, steam generators and heat exchangers, heat carrier pumping pumps, and biological protection. At that, an electromagnetic pump is installed in the heat carrier circuit when heat is being transferred in steam generator; the above pump is coaxially attached to lower part of vertically located steam generator, and in the heat carrier circuit when heat carrier is being transferred in heat exchanger the provision is made for its connection to lower part of heat exchanger by means of a pipeline and location that is parallel to vertically located heat exchanger. Heat carrier flow is arranged in upward direction through active reactor zone.

EFFECT: optimisation of heat exchange in mode of varying loads and obtaining optimum weight and dimensional parameters of nuclear power plants as a whole, being the part of the ship.

1 dwg

FIELD: power engineering.

SUBSTANCE: heat exchange device comprising a lower part - a heating and evaporation zone and an upper part - a cooling and condensation zone, a body with heat-insulated walls and nozzles for supply and drain of a heated solution, comprises a longitudinally ribbed pipe located in a mixing chamber of a furnace, at the same time the ribbed pipe exiting the furnace goes into a shell and tube heat exchanger, which comprises a body, three pipes exiting from the ribbed pipe at the angle of 15 degrees, changing into horizontal pipes, at each end of which there is a socket, and seven tubes of identical diametre exit from the each socket, besides, body walls are heat-insulated with a heat insulation material, for instance, penofol, and the body comprises three nozzles for supply and drain of the heated solution and a nozzle for emptying a reservoir, at the same time the device is equipped with a pressure gauge, a safety valve and a tap for coolant filling and has a line of excessive pressure compensation for coolant filling with the device on, which is equipped with a valve, besides, in the device there is a reverse line of the circulating circuit and an expander with a nozzle.

EFFECT: invention increases efficiency, reliability and effectiveness of device operation.

4 dwg

FIELD: power industry.

SUBSTANCE: air cooling unit of ABC GI sectional type with cylindrical displacers consists of steam supply header, several rows of inclined or vertical heat exchange tubes, condensate collection header and cylindrical displacers.

EFFECT: fundamental improvement of the design of sectional unit with air cooling due to improved efficiency of the surface use.

Heat exchange unit // 2457415

FIELD: power industry.

SUBSTANCE: heat exchange unit contains housing in the form of flattened cone with heads; inlet and outlet branch pipes of heat carriers to tube and inter-tube space, tube sheets in the holes of which there fixed along concentrical circles and inclined to axis of the units are tubes in the form of flattened cones, vertical central pipe for location of thermocouples; at that, tubes in the form of flattened cone have simultaneous inclination relative to the unit axis and in the direction about the unit axis.

EFFECT: improving heat exchange intensity at low metal consumption.

3 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: in a vertical shell-and-tube evaporator with an overheater, comprising a bundle of inner heat exchange tubes and external tubes installed coaxially with a circular through gap relatively to each other, installed in a cylindrical vessel, having a lower nozzle of heated coolant inlet and an upper nozzle to discharge the latter, as well as upper and lower grids to connect ends of inner tubes and a grid for fixation of external tubes, a cover and a bottom with nozzles for supply and drain of the cooled coolant, the external tubes with their grid are moved upwards from the lower grid by height sufficient to transfer the heated coolant into gaseous condition on the produced open heating surface of the external tubes.

EFFECT: reduced dimensions and weight of a shell-and-tube evaporator.

1 dwg

FIELD: power engineering.

SUBSTANCE: shell-and-tube heat exchanger comprises joined identical sections, every of which comprises a bundle of tubes fixed in tube plates, installed in a vessel, collector chambers of tube and shell media, at the same time each section is equipped with end rigid hollow covers, in the side walls of which perpendicularly to the longitudinal axis of the section there are through holes arranged, at the same time the sections are connected to each other along axes of the provided holes in covers via sealing elements between side walls of covers, cavities of which form a collector chamber of tube medium. Each section is additionally equipped with at least one rigid shell tightly covering the vessel and installed in a gap between end covers, in areas adjacent to tube plates, in side walls of which jointly with the vessel there are through holes arranged, the axis of which lies in the same plane with axes of holes of end covers, at the same time the sections are additionally connected to each other along axes of arranged holes in the shell and the vessel via the specified sealing elements between side walls of the shell, cavities of which form a collector chamber of shell medium.

EFFECT: unification and reduction of heat exchanger dimensions.

4 cl, 3 dwg

FIELD: heat power engineering, applicable in designing and production of heat exchangers with tube plates and in other branches of industry.

SUBSTANCE: according to the first modification, the shell-and-tube heat exchanger has a heat exchanger shell with connections for delivery and discharge of the medium with a lower pressure, it envelops the heat-exchanging tubes connected to the tube plate, distributor chamber separated by a partition into the inlet and outlet cavities and limited by the case with connection for delivery and discharge of the medium with a higher pressure, case cover and tube plate having a strengthening tie in the distributor chamber, the strengthening tie is made in the form of a stiffening tube fixed to the case cover of the distributor chamber and the tube plate. According to the second modification, the shell-and-tube heat exchanger has a heat exchanger shell with connections for delivery and discharge of the medium with a lower pressure, it envelops the heat-exchanging tubes connected to the tube plate, distributor chamber separated by a partition into the inlet and outlet cavities and limited by the case with connections for delivery and discharge of the medium with a higher pressure, case cover and tube plate having a strengthening tie in the distributor chamber, the strengthening tie is made in the form of a stiffening tube fixed to the case over of the distributor chamber and the tube plate, the strengthening tie in the form of a stiffening tube with the case cover and the tube plate has a through hole of a permanent or variable flow section. According to the third modification, the shell-and-tube heat exchanger has a heat exchanger shell with connections for delivery and discharge of the medium with a lower pressure, it envelops the heat-exchanging tubes connected to the tube plates, distributor chamber separated by a partition into the inlet and outlet cavities and limited by the case with connections for delivery and discharge of the medium with higher pressure and the tube plates, in the distributor chamber the tube plates are fixed to one another by a strengthening tie in the form of stiffening rod. According to the fourth modification, the shell-and-tube heat exchanger has a heat-exchanger shell with connections for delivery and discharge of the medium with a lower or pressure, it envelops the heat-exchanging tubes connected to the tube plates, distributor chamber separated by a partition into the inlet and outlet cavities and limited by the case with connections for delivery and discharge of the medium with a higher pressure and the tube plates, in the distributor chamber the tube plates are fixed to one another by a strengthening tie in the form of stiffening tube. According to the fifth modification, the shell-and-tube heat exchanger has a heat-exchanger shell with connections for delivery and discharge of the medium with a lower pressure, it envelops the heat-exchanging tubes connected to the tube plates, distributor chamber separated by a partition into the inlet and outlet cavities and limited by the case with connections for delivery and discharge of the medium with a higher pressure and the tube plates, in the distributor chamber the tube plates are fixed to one another by a strengthening tie in the form of a stiffening tube, the strengthening tie in the form of a stiffening tube with tube plates has a through hole of a permanent or variable flow section.

EFFECT: idle time, enhanced utilization factor of the heat exchanger, as well as enhanced strength of the structure in static and especially dynamic modes of operation.

5 dwg

Up!