Heat exchanger

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

 

The invention relates to a heat exchanger housing having a primary inlet connection, a primary outlet connection, a secondary inlet connection and the secondary outlet connection, and between the primary inlet primary connection and an outlet connection is a primary flow path of the primary side and between the secondary inlet connection and the secondary outlet connection is a secondary flow path of the secondary side and the primary flow path is in heat exchange contact with by secondary flow, and the heat exchanger has at least one auxiliary control unit, which is located in the primary flow path and the secondary flow path.

Such a heat exchanger is known, for example, from EP 608195 B1. Inside the case of the known heat exchanger is integrated temperature sensor that measures temperature in both primary and in the secondary flow path. The temperature sensor is located in a cylindrical tube and is connected to the valve outside the case.

The heat exchangers used to transfer thermal energy from the primary environment in the secondary environment, not mixing both these environments. Thus, for example, the first environment - water district heating system, and the second environment - drinking water quality. Also on ENISA least one fluid can be a gas. To reduce the size of the heat exchanger auxiliary control devices, such as sensors, which are necessary for the operation of the heat exchanger is inserted into the heat exchanger.

However, as a result of this form weak spots inside of the heat exchanger. If the heat exchanger is built such auxiliary devices as sensors that are simultaneously in the two flow paths separated from each other, then there are designated crossing breakouts from one flow path to another flow path. Thus, there is a possibility that both the environment will come into contact and involuntarily't mix. This occurs, for example, if one of the points of intersection of the leaks.

The basis of the invention is to improve the design of the heat exchanger.

This task is to open above the heat exchanger solved due to the fact that the auxiliary control device passes through the intermediate space, which is located between the primary by stream and by secondary flow.

Transitional areas, and thus the intersection between the primary by stream and by secondary flow are isolated from each other. This is ensured by the fact that the primary flow path and a secondary flow path respectively adjacent intermediate space. The intermediate space, Breakfast is STV is located between the primary and secondary sides of the heat exchanger. This concerns at least the portion of the heat exchanger, in which the auxiliary control device is located in the primary flow path and the secondary flow path. The primary flow path and a secondary flow path in this part of the heat exchanger is located at a distance from each other. The auxiliary control device passes through the intermediate space and thereby at the same time is located in three areas, namely in the interstitial space and in the fields left and right of the intermediate space. Auxiliary control devices used for control or regulation of the heat exchanger and are, for example, mechanically or thermally. It is also possible to laying electric wires, which pass to the device inside the heat exchanger. If the seal between the primary path of flow and the intermediate space or between the secondary through-flow and the intermediate space becomes leaky, the intermediate space will play the role of the collecting leaks. This means that the carrier accidentally coming out of the primary flow path or the secondary flow path, going in a certain place. Therefore, preventing large damage to the heat exchanger. Also the intermediate space ensures that the primary fluid and torinoi side not in contact with each other, as the situation in which the intersection of the primary flow path and the intermediate space and the intersection of the secondary flow path and the intermediate space simultaneously become leaky, impossible. Due to the possibility of collecting leaks in the interstitial space, the operation of the heat exchanger becomes safer and more reliable. In the intermediate space can, for example, to arrange the control sensor, which detects the intake of the fluid in the intermediate space. After this can be put in place additional measures that will prevent large leakage, for example blocking the inlet and outlet pipes.

Particularly preferably, if the intermediate space has access to the environment around the body. Thus, the intermediate space can have a small volume. Then the volume of the intermediate space can be calculated only for small amounts of leakage, as in the case of failure of the fluid can be redirected to the outside. The size of the heat exchanger with an intermediate space slightly larger than the size of the heat exchanger without this intermediate space. If in the intermediate space penetrates the coolant, for example, due to its warmth and adjacent the heated primary and secondary side it can evaporate. N the example, leaks occur if the temperature of the liquid in the primary pipeline rises higher than foreseen. The fluid expands due to high temperature and requires more space. In a weak place, such as the seal, the fluid tries to flow. The location of the intermediate space sets of fluid leakage. The intermediate space takes the fluid and at the same time relieves the excess pressure caused by coolant. The intermediate section relieves the burden from other parts of the heat exchanger due to the fact that the intermediate space is exposed to the environment around the body, so the excess pressure can escape. Although it lost a bit of fluid, but there is no danger that the pressure increase will affect other parts of the heat exchanger.

The preferred way intermediate space is at least partially limited by the housing. Thus, the housing covers at least a part of the primary and of the secondary flow path and the intermediate space. For example, the intermediate space on their walls, which are not formed body may be limited by the walls of the primary or secondary flow path. Therefore, without the high cost of the material is provided intermediate spaces is.

Particularly preferably, if the intermediate space has at least one hole, which is located in the housing. Accordingly, the intermediate space directly adjoins the housing and has at least one hole, which connects the intermediate space with the environment outside. Thus, do not require channels that can prevent runoff or evaporation of spilled liquid.

Preferably, the auxiliary control device represented the first plunger of the first valve. The first valve thereby is recessed valve, as it is at least partly located inside the heat exchanger. This provides a compact design of the heat exchanger. The first valve plunger at the same time, at least in one operating position located in both the primary and secondary flow paths, and on the intermediate section.

According to a preferred implementation variant of the invention the first valve is located in the area of the secondary inlet connection. Valve, for example, is inserted from the outside through the secondary inlet connected to the housing of the heat exchanger and connected to the housing by a threaded connection, to prevent its falling out. Thus, the first valve can be easily replaced, and you are experiencing the huts is accurate fluid pressure he reliably recorded. The first valve has a lower thermal load, since the secondary side of the heat exchanger, the coolant is heated by the primary coolant, and the coolant in the secondary inlet connection has a lower temperature than the secondary outlet connection.

Preferably the primary inlet connection has a first seat of the first valve. Thus, it is possible to control the first valve by the fluid flowing in the primary inlet connection. This is particularly simple if the primary inlet connection and the secondary outlet connection located opposite each other, and connections are joined along a straight line. For example, the first valve seat is fixed in the housing in the primary inlet connection, and at the same time with a closed first valve primary inlet connection hermetically closes it. The first gate of the first valve, which interacts with the valve seat, from a practical point of view can provide the flow through the primary inlet connection through.

It is advisable that the first valve had a membrane that is in contact with the secondary coolant flow path. The membrane reacts practically businessone installed on the pressure change in the secondary inlet connection. Accordingly, the first valve has the low rate of response.

The preferred first Cam follower may be powered by a membrane. Thus, the almost instantaneous response of the membrane is also used for the Cam follower. This makes it possible practically without delay to affect the fluid flow in the primary flow path depending on the fluid flow in the secondary flow path.

Preferably the auxiliary control device is a temperature sensor. The advantage for the safe operation of the heat exchanger is also the possibility of measuring the temperature of the liquid inside the heat exchanger. Then there is the possibility on the basis of the measured temperature to make the design of reliable exchanger. For example, this is done by monitoring the temperature of the liquid in the heat exchanger. Too high a temperature of the liquid measures are taken to protect the user from burns. Also thanks to the integrated temperature sensor inside the body more effectively use spatial parameters of the heat exchanger.

Preferably the temperature sensor is connected with an intermediate space along the path of the fluid. The temperature sensor may, for example, to use the intermediate space as a starting point for measuring temperature. Also the temperature sensor can be stretched when the cat is at the expansion inside the intermediate space. Thus, when heated, does not require additional space and prevents the increase in pressure due to expansion of the material of the temperature sensor. The intermediate space may also serve to compensate for the pressure.

Provided that the temperature sensor has a bellows, with the inner portion of the bellows is limited by the sensor housing and the interior of the bellows is connected with the intermediate space. The bellows is a movable part of the temperature sensor due to temperature changes, changes its geometry. By connecting the inner part of the bellows with an intermediate space on the geometry of the rolling bellows affects only the temperature of the material capable of expanding in the sensor housing. The sensor housing in contrast to the inner part of the bellows has no connection with another space and closed. With this design to measure the impact of primary or secondary flow path through the temperature sensor can be performed independently, although the temperature sensor is simultaneously in both flow paths and the flow path typically have different temperatures.

Particularly preferably, the temperature sensor was connected to the second plunger of the second valve. The temperature sensor can thus act directly on the directly on the second valve. A second plunger located at least partially inside the housing. This ensures that the space for movement of the second Cam follower does not depend on the external geometry of the second valve.

Provided that the second valve is located in the area of the primary exhaust connection. In the primary outlet connection coolant primary side has a lower temperature than the primary inlet connection. thermal load of the second valve is maintained, therefore, minimal. If the primary outlet connection is located opposite the secondary outlet connection, depending on the measured temperature in the region of the secondary connection, you can simply utilize the second valve.

Preferably the second valve has a return spring, which presses the shutter to the second valve seat and closes the primary exhaust connection. Return spring exerts a counteracting force, which is under the action of the flowing fluid of the primary path to the gate. When the opposing force of the return spring is overcome, the second valve is in the open position. The reaction force of the return spring can be adjusted, allowing the second valve can be adjusted in accordance with different conditions when Abadiania.

Especially, it is preferable that the heat exchanger has a heat transfer plate, and the first part of the primary and secondary flow paths are parallel to each other, and the second part of the primary and secondary flow paths are arranged diagonally relative to each other. With this arrangement, the flow paths can be simultaneously operated built-in temperature sensor, the first and second valve are respectively at least partially positioned within a housing. For this purpose, provided that the primary inlet connection is located opposite the secondary inlet connection and at the same time the primary outlet connection is located opposite the secondary outlet connection. The greater the number of heat exchanger plates, the greater the heat exchanger can pay for one unit of time.

For example, this is advantageous if the heat exchanger is provided for heating system of the premises.

Further, the invention is disclosed more in detail with the help of preferred options for implementation with the attached drawings. In the drawings shown:

figure 1 - schematic cross-section of the heat exchanger with the first valve

figure 2 is a schematic cross-section of the heat exchanger with built-in temperature sensor,

figure 3 - schematic view of the heat exchanger with several of Teploobmennik the mi plates

figure 4 - example of implementation of the heat exchanger with the first valve and an internal temperature sensor that communicates with the second valve in the section.

Figure 1 schematically represents a cross-section of the heat exchanger 1 with a housing 2, which has a primary inlet connection 3, the primary outlet connection 4, the secondary inlet connection 5 and the secondary outlet connection 6. Between the primary inlet connection 3 and the primary outlet connection 4 is the primary path 7 of the flow of the primary side 8, and between the secondary inlet connection 5 and the secondary outlet connection 6 is the secondary path 9 flow secondary side 10. In section 1 7, 9 threads are only visible part. Flow direction is shown by arrows 11. The primary coolant side 8 enters through the primary inlet connection 3 and out through the primary outlet connection 4. Accordingly, the coolant of the secondary side 10 enters through the secondary inlet connection 5 and out through the secondary outlet connection 6. Inside the heat exchanger 1, the heat carrier of the primary side 8 gives the warm liquid secondary side 10, through which the coolant of the secondary side 10 is heated. Therefore, the primary coolant side 8 on the primary inlet connection 3 is warmer than the primary exhaust under the notes 4. The coolant of the secondary side 10 on the secondary inlet connection 5 colder than on the secondary issue of the connection 6.

The heat exchanger 1 in figure 1 has a first section 12, the second section 13 and the third section 14. The first section 12 extends from the side of the housing 2 with the primary outlet connection 4 and the secondary inlet connection 5 to the third section 14. The second section 13 extends from the side of the housing 2 with the primary inlet connection 3 and the secondary outlet connection 6 to the third area 14 in the primary path 7 of the thread on the second area 13. The first pusher 15 valve is part of the first valve 16, which is located on the secondary inlet connection 5 and partially enters into the housing 2. The first valve 16 is recessed valve, which has a membrane 17 acting on the first Cam 15 of the valve. In addition, the first valve 16 can be influenced from the outside, for example, establishing communication with the primary inlet connection 3 or the secondary outlet connection 6, which acts on the device, bringing the first valve 16 in action.

The first pusher 15 and the valve 1 has a first shutter 18 located on the side opposite the secondary inlet connection 5. The first shutter 18 communicates with the first valve seat 19, which is located in the primary inlet connection 3. Primary the secondary inlet connection 3, 5 are located opposite each other on the housing 2, so the first plunger valve 15 is located on a straight connecting line between the primary and secondary inlet connection 3, 5 with the possibility of axial movement.

The third section 14 in the housing 2 of the heat exchanger 1 has the intermediate space 20, which partially receives the plunger 15 of the valve. To seal the primary side 8 with the primary through 7 of the flow relative to the intermediate space 20 and the secondary side 10 with the secondary through 9 of the flow relative to the intermediate space 20 are respectively seal 21. Seal 21 at the same time align the first plunger valve 15, so no other bearings at the joints of the boundaries of parcels 12, 13, 14 are not required. The intermediate space 20 on the second section 14 has direct access to the environment around the body 2. For this intermediate space has a hole 22, which is the breakdown of the housing 2.

When the coolant flows through the secondary path 9 stream, the primary path 7 of the flow to some extent opens under the action of the membrane 17. If during operation, one of the seals 21 becomes leaky, the coolant flows into the intermediate space 20 and there evaporates due to the high temperatures in the intermediate space 20 or goes out and the holes 22. This limit ensures that the heat carrier of the primary or secondary side 8, 10 is mixed with the coolant of the secondary or primary side 10, 8, and thus, for example, there is no contamination of the liquid. The intermediate space 20 also prevents, to the primary side 8 on the secondary side 10 or Vice versa transmitted pressure in the event of a breach. The primary side 8 and the secondary side 10 thereby separated from each other and do not influence each other when leakage due to the bounding walls 23, 24 of the first section 12 and second section 13 located at a distance from each other and located between the third section 14.

Figure 2 presents a schematic view in section of another heat exchanger 25 with built-in temperature sensor 26. The temperature sensor 26 is held in the axial direction from the primary path 7 of the thread on the first segment 12 and the intermediate space 20 on the third plot in the secondary path 9 of the thread on the second section of the heat exchanger 25. The temperature sensor 26 has a bellows 27, which can change its axial length, and contains gas. The temperature sensor has a housing 28 of the sensor, which has an extensible environment that is thermally connected with the point 29 of the measuring of the temperature sensor and responsive to temperature changes in the field vtorichnovodnomu connection 6. Point 29 measurement comes in a secondary outlet connection 6, and measures there the liquid temperature of the secondary side 10.

The housing 28 of the temperature sensor 26 is closed and acts on the outer surface of the bellows 27. The inner portion of the bellows 27 is connected by way of fluid from the intermediate space 20 of the third section 14, which again has an exit to the outside through the opening 22. These connections of the inner part of the bellows 27 with the environment around the body 2 does not allow for the temperature sensor 26 was influenced by the temperature of the primary path 7 of the thread. When heated primary path 7 of the thread on the first segment 12, the pressure inside the bellows 27 would increase without further action.

If the inner part of the bellows 27 has been closed, the expandable material, the gas inside the bellows 27 gained the pressure that would affect the geometry of the bellows 27 and the second valve 30. This is undesirable and is not allowed due to the connection with the intermediate space 20 and another output to the environment. The resulting increase in pressure within the bellows 27 is avoided due to the fact that the gas inside the bellows 27 may without limitation be extended. This ensures that the geometry of the bellows 27 affects only the temperature of the expandable material in the housing 28 of the sensor and the measurement is that the temperature is accurate.

The side opposite to the secondary outlet connection 6, figure 2 is the primary outlet connection 4, which has a second valve 30 with the second plunger valve 31. The second plunger 31 of the valve is connected with a temperature sensor 26 at the first axial end, and with a return spring 32 on the second axial end. On the second plunger valve 31 in the area of the primary outlet connection 4 is the second stopper 33, which interacts with the second seat 34 of the second valve 29. The second valve 29 is in the closed position, if the return force of the return spring 32 is greater than the reaction force of the temperature sensor 26. In the closed position the second valve 30, the fluid flow on the primary side 8 of the heat exchanger 25 is interrupted.

With the help of the heat exchanger 25 in figure 2 can be controlled primary outlet connection 4 depending on the temperature of the liquid in the secondary outlet connection 6. Due to the opposite location of the primary outlet connection 4 and the secondary outlet connection 6 with the second valve 30 to the primary outlet connection 4 and a temperature sensor 26 inside the housing 2 quick reaction in the primary exhaust connection. The heat exchanger 25 through this becomes reliable and reacts with virtually no delay at high temperature jdcostino secondary outlet connection 6.

Figure 3 shows a schematic view of another heat exchanger 35 with several heat exchange plates 36 inside the housing 2. Heat transfer plate 36 are arranged respectively on the first section 12 and second section 13, and figure 3 the first site is located on the right of the third axial section 14 and second section 13 to the axial left of the third section 14. Neighbouring primary and secondary paths 7, 9 threads are on the first section 12 in parallel relation to each other, and the second area 13 diagonally relative to each other. In the third section 14 is located intermediate space 20. There is a primary and secondary path 7, 9 threads are parallel to each other, but approximately at a right angle relative to the primary and secondary paths 7, 9 threads on the first and second section 12, 13. Figure 3 primary and secondary paths 7, 9 threads are on the first and second section 12, 13 vertically, and the third plot 14 horizontally. Heat transfer plate 36 primary side 8, through which passes the fluid to the primary side 8 are alternately with heat exchanger plates 36 of the secondary side 10 which carry the coolant to the secondary side 10. On the first segment 12 of the primary outlet connection 4 and the secondary inlet connection 5 are located on the body 2. On the second area 13 on the housing 2 located the received primary inlet connection 3 and the secondary outlet connection 6. The heat exchanger 35 in figure 3 may be performed as described above in figure 1 and 2.

According to the arrangement in figure 3 you can also embed the auxiliary control devices of the heat exchanger 1 and the heat exchanger 25. The first valve 16 is spatially located between the primary inlet connection 3 and the secondary inlet connection 5. Simultaneously the temperature sensor 26 is located between the secondary outlet connection 6 and the primary outlet connection 4, and a temperature sensor 26 acts on the second valve 30 to the primary outlet connection 4. This is shown in figure 4.

4 shows another example implementation of the heat exchanger 37. The heat exchanger 37 is a combination of a heat exchanger 1 with figure 1 and the heat exchanger 25 with figure 2 with the location of the heat transfer plates 36 and routes 7, 9 flows in figure 3. The heat exchanger 37 thus has both the control and regulation of temperature, and the control and regulation of pressure. Is there a control and adjustment depends on bringing the first and second valve 16, 30 in the action outside.

In figure 4, the first valve 16 is here designed as a proportional valve. Between the first section 12 and second section 13 of the cylinders 38, which create a gap between the first section 12 and second section 13. Due to this, there is the third section 14 paragraph is megalocnus space 20, which has an outlet into the environment around the casing 2 outside heat exchanger 37.

When the coolant flows through the secondary path 9 flow, under the force of the flowing fluid on the membrane 17 in the first valve 16 primary path 7 of the flow to some extent open. The heat exchanger reacts practically businessone to changes in the secondary inlet connection 5 while changing the flow on the primary side 8. If during operation at the point 29 of the measuring of the temperature sensor 26 is received too high a temperature, the temperature sensor 26 operates by changing its bellows 27 due to expansion of the expandable material within the housing 28 of the sensor to the second valve 30. The second valve 30 in this case throttled or completely closed. Thus, avoids the excessive increase of the temperature at the outlet of the fluid on the secondary side 10.

1. The heat exchanger housing having a primary inlet connection, a primary outlet connection, a secondary inlet connection and the secondary outlet connection, and between the primary inlet primary connection and an outlet connection is a primary flow path of the primary side and between the secondary inlet connection and the secondary outlet connection is a secondary path flux is and the secondary side, and the primary flow path is in heat exchange with the secondary by the stream, and the heat exchanger has at least one auxiliary control device located in the primary flow path and the secondary flow path, wherein the auxiliary control device passes through the intermediate space (20)located between the primary path (7) of the stream and the secondary path (9) of the stream.

2. The heat exchanger according to claim 1, characterized in that the intermediate space (20) is connected with the environment around the housing (2).

3. The heat exchanger according to claim 1, characterized in that the intermediate space (20)at least partially limited by the housing (2).

4. The heat exchanger according to any one of claim 2 and 3, characterized in that the intermediate space (20) has at least one hole (22)located in the housing (2).

5. The heat exchanger according to any one of claim 2 and 3, characterized in that the auxiliary control device is a first pusher (15) of the first valve (16).

6. The heat exchanger according to claim 5, characterized in that the first valve (16) is located in the area of the secondary inlet connection (5).

7. The heat exchanger according to claim 5, wherein the primary inlet connection (3) contains the first saddle (19) of the first valve (16).

8. The heat exchanger according to claim 5, characterized in that lane the first valve (16) has a membrane (17), which is in contact with the coolant of the secondary path (9) of the stream.

9. The heat exchanger according to claim 5, characterized in that the first plunger (15) of the valve may be actuated by a membrane (17).

10. The heat exchanger according to any one of claims 1 to 3, 6 to 9, characterized in that the auxiliary control device is a temperature sensor (26).

11. The heat exchanger of claim 10, characterized in that the temperature sensor (26) is connected with an intermediate space (20) in the liquid.

12. The heat exchanger of claim 10, characterized in that the temperature sensor (26) has a bellows (27), with the inner portion of the bellows (27) is limited by the housing (28) of the sensor, and the inside of the bellows (27) is connected with an intermediate space (20).

13. The heat exchanger of claim 10, characterized in that the temperature sensor (26) is connected with the second pusher (31) of the second valve (30).

14. Heat exchanger according to item 13, wherein the second valve (30) is located in the area of the primary outlet connection (4).

15. Heat exchanger according to item 13, wherein the second valve (30) has a return spring (32)which presses on the shutter (33) to the second saddle (34) of the valve and thereby closing the primary exhaust connection.

16. The heat exchanger according to any one of claims 1 to 3, 6-9, 11-15, characterized in that the heat exchanger (1, 25, 35, 37) has a heat transfer plate (36), and at first the plot (12) primary and secondary paths (7, 9) threads are parallel to each other, and the second part (13) of the primary and secondary paths (7, 9) threads are located diagonally with respect to each other.



 

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13 cl, 9 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: mechanical engineering; heat exchanger equipment.

SUBSTANCE: invention relates to multistage heat exchange device containing primary and secondary circuits to provide heat exchange in which heat carrier passes in opposite directions. According to invention, primary circuit has at least two points of supply of heat carrier displaced relative to each other in direction of flow. Said device contains also system of valves interacting with temperature sensors and regulating heat carrier flow through primary circuit. Valve gear for each heat carrier supply point has separate valve.

EFFECT: provision of stable control of temperature at output of secondary circuit.

5 cl, 3 dwg

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

Heat-exchanger // 2345303

FIELD: heating.

SUBSTANCE: invention relates to heat exchange units and may be used in heat-exchangers with primary and secondary circuits containing valve for coolant flow control. For this purpose, the heat exchanger consisting of housing with primary circuit between inlet connection and return pipe connection, and the secondary circuit between feed line connection and drain connection, includes valve for coolant flow control through the primary circuit and actuator with the expanding element being affected by the secondary circuit temperature. The valve and expanding element are located from the opposite sides of heat transfer surface, wherethrough the heat from the primary side is transferred to the secondary side. So, the heat-exchanger is represented with plate heat-exchanger. If temperature in the secondary circuit is changed, the expanding element is extended or compressed. The expanding element is connected with the valve which controls coolant flow rate in the primary circuit.

EFFECT: development of compact heat exchanger.

9 cl, 2 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 // 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.

SUBSTANCE: invention relates to the field of heat engineering, namely, to devices for heat recovery. Device for heat recovery contains a heat exchanger (3) located in the annular space (4) representing a part of the exhaust pipe (2) branching, for example, from a gas turbine or a diesel engine. Bypass pipe (6) for exhaust passes through the annular space (4), and distribution of the exhaust flow through the heat exchanger (3) and the bypass pipe (6) is regulated by the control valve (7). The control valve (7) is a butterfly valve (7) which is located in the exhaust pipe (2), adjacent to the heat exchanger (3), at that the said butterfly valve (7) has a fixed part (8) and the rotary part (9) equipped with openings (10, 12, 11, 13) closed or combined with each other. And both the fixed part (8) and the rotary part (9) have two oppositely directed conical parts (8a, 8b; 9a, 9b).

EFFECT: creation of a simple and inexpensive in manufacture device for heat recovery, weight reduction and simplification of regulation.

9 cl, 5 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

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