Flow control valve
FIELD: machine engineering.
SUBSTANCE: invention relates to the flow control valve (1) for liquid heating and cooling installations, consisting of housing (2) having an inlet (3) and an outlet (4) and a connecting pipe (13) located between them wherein a pressure control device (14) is inserted which supports constant pressure differential between pressure ranges in front of and behind the flow control unit (8) located in the connecting pipe, as well as a spindle (7) having a control element protruding from the housing (2) and the first throttle element (9) located in the housing (2) which affects the flow control unit or its parts. This flow control unit (8) consists of the first throttle device which is formed from the first throttle element (9) fixed on the spindle (7) and a seat (10), and the second throttle device which is formed from the second throttle element (11) mounted on the spindle (7) with the possibility of longitudinal relocation on it and a seat. The second throttle element (11) is movable in the direction of the first throttle element (9).
EFFECT: valve has a simpler design and takes up less space.
29 cl, 11 dwg
SUBSTANCE: water-flow regulator comprises a water discharge pipe 2 of rectangular cross-section with seat 4, overlapping by the shutting-off device, designed as a flexible tape 3. The last-mentioned forms the control cavity 6 with the case of water discharge pipe 2, connected with the head-water and equipped with the device for drainage, on which the valve is installed. Valve is connected to the membrane of the membrane case 8 by rod 12, the cavity of which is connected with the head-water. Shutting-off device in the form of flexible tape 3 at the area of its adjacency to the edge of passage section of water discharge pipe 2, from side of head-water is provided with cantilever fitted flexible insert 5. Width of the flexible insert 5 is greater that the width of the gap when the shutting-off device is completely closed.
EFFECT: reduction of uncontrolled leakages of water-flow regulator.
FIELD: machine building.
SUBSTANCE: distinctive feature of the specified flow rate governor is that the ring channel between the internal surface of the sleeve and surface of the slide valve between the supports is connected with the internal cavity of the slide valve by system of round holes, part of them is opposite each of the sleeve windows, and the diameter and number of the round holes in the slide valve are selected as per equation:
EFFECT: accuracy if flow rate control of work fluid in wide range of pressure drops on the governor depending on the actuator loads.
FIELD: machine building.
SUBSTANCE: regulator consists of a housing (1) and a cover (2), between which an elastic membrane (3) is latched, which together with the housing (1) forms under-membrane cavity (4) and with a cover (2) - above-membrane cavity (5). In the cover 2 a mobile wall (6) is installed on the male thread which has a female thread with a seat installed in it (7) with a through passage hole (8), and circular protuberance (9). The pitch of male thread of the seat (7) differs from the pitch of the male thread of the partition (6). The adjusting screw (12) is used as a support of the spring (13), which presses the toe (14) to the membrane (3). The presence of two threads with differing pitches allows to regulate within of several microns. The elasticity of the membrane (3) is also regulated by change of spring (13) force.
EFFECT: expansion of scope of application of the regulator and decrease of dependence of characteristics of gas and hydrostatic supports from the accuracy of manufacture.
3 cl, 1 dwg
SUBSTANCE: invention relates to rocketry and can be used for maintenance of preset consumption of fuel components at engine inlet pressure variation. This device has regulator with appropriate orifices, case with inlet and outlet chambers with bellows-like sensitive element with fixed flange secured at device case outlet and moving flange arranged at device inlet. In compliance with this invention, said bellows is spring loaded by compression spring while said orifice is made in bellows moving flange to interact with fixed shaped regulator. Additionally, one or several orifices can be made in fixed flange to communicate inlet and outlet chambers.
EFFECT: higher precision of control over working body consumption.
2 cl, 2 dwg, 1 tbl
FIELD: process engineering.
SUBSTANCE: invention relates to flow control means, particularly, to flow controller to be used in continuous steel casting gas feed channel. Proposed controller (30) comprises case (32) with inlet (38), outlet (40) and flow channel (36) arranged there between. Wire (42) is arranged in said channel (36). Note here that wire retainer is arranged in flow channel (36).
EFFECT: reliable control of gas flow blown in fused metal.
12 cl, 12 dwg
SUBSTANCE: water flow rate stabiliser includes water outlet tube 1 of a rectangular cross-section with seat 2 having shaped cut-out 3 that is used as a control element. Inside water outlet tube 1 an arrangement is made for a shutoff element made in the form of flexible belt 4 fixed with one of its ends to an upper wall of water outlet tube 1, and with the other one to the bottom of seat 2. Flexible belt 4 forms control cavity 5 with drain channel 6 together with the housing of the water outlet tube. The control also includes membrane housing 7, the cavity of which is connected via a pipeline to an upstream wall. Membrane 9 of membrane housing 7 is connected to valve 13 by means of stock 10 with adjustment screw 11 and spring 12.
EFFECT: improving flow rate stabilisation accuracy.
SUBSTANCE: water flow controller comprises a water outlet pipe 1 of rectangular cross section, formed by faces 2 with a seat 3 at the lower face. Inside the water outlet pipe 1 there is a stop valve made in the form of a flexible tape 4 fixed by one end to the upper face 2 of the water outlet pipe 1, and by the other one - to the base of the seat 3 at the lower face 2. The flexible tape 4 forms with the body of the water outlet pipe 1 a control cavity 5 with a profiled cut 6 on the rear face 2. The controller also comprises a membrane body 7, the cavity of which is connected by a pipeline 8 with the upper reach. The membrane 9 of the membrane body 7 by means of the stem 10 with a setting screw 11 and a spring 12 is connected to a flexible tape 13 fixed at the upper edge of the profiled cut 6 used as a control element of drainage from the control cavity 5.
EFFECT: improved accuracy of water flow stabilisation and expansion of range of processed heads in an upper reach.
FIELD: machine building.
SUBSTANCE: flow rate governor comprises body with inlet and outlet valves communicated via control valve, resilient plate composed by seat-opening and having one end secured at said body and free opposite end. Governor has extra damper composed of crosswise roller whereto pressed is the resilient plate free end located upstream. Resilient plate adjustment elements are composed of a bar with lengthwise groove and locking screw and shims under said roller.
EFFECT: better damping properties.
FIELD: physics; control.
SUBSTANCE: invention relates to means of controlling flow of a fluid medium, e.g., gas. The invention discloses a built-in console-type device, having a ventilation window, which is configured to change its position, which can be placed near the lower point of the control device to provide runoff of liquids accumulating in the device due to moisture and precipitation. The device can also include a connecting unit which enables the device to turn independently of the actuating mechanism and the control valve body for installation in different installation conditions. The connecting unit can additionally have an inlet window for connecting the outlet pressure feedback line when the control valve body and parts of the connecting unit of the main outlet pressure feedback channel are not aligned due to turning of the device.
EFFECT: easier installation in a pipe with a fluid medium, low cost and complexity of the device.
22 cl, 8 dwg
SUBSTANCE: limiter includes load-carrying element (10) with passage and bent flat shaped spring (11) located on load-carrying element (10). Flat shaped spring (11) includes at least one spring tongue (12), and passage has at least one hole (13, 18); in addition, spring tongue (12) and hole (13) have almost the same length in longitudinal direction. Spring tongue (12) is made and located above hole (13) so that at increasing pressure drop it is borne tighter to load-carrying element (10), and at that, it reduces hole (13) continuously for continuous reduction of passage in the specified pressure range. Due to the size of hole (13) corresponding to the value of spring tongue (12) the flow limiter (1) design can be more compact and less prone to impurities.
EFFECT: reducing the tendency of flow limiter to vibrations.
11 cl, 20 dwg
FIELD: power industry.
SUBSTANCE: consumer water heating system contains the tank for heating of the water pumped from the water supply source through the pipeline comprising the valve regulated by a control unit, temperature, flow rate and pressure sensors, the mixing chamber, one or two blowing fans. The tank for water heating is fitted with the water level sensor and the water mixer, the coil along the whole area of the tank is installed in the tank. The coil is installed with a possibility of dismantling and made of the material with high heat conductivity. The inlet pipeline of combustion gases of boiler plant is connected to the coil inlet. The tank is connected with the circulation pump, the adjustable control unit through the pipeline comprising temperature, flow rate and pressure sensors. The circulation pump through the valves regulated by control units is connected with the recirculation pipeline for water supply into the tank and the pipeline for water supply into the mixing chamber. The system is fitted with the pressure safety valve.
EFFECT: expansion of scope of application, improvement of efficiency of heating capacity of combustion gases, automation of the control system.
4 cl, 3 dwg
SUBSTANCE: group of inventions relates to valve building and is designed for equalisation of pressures in hydraulic networks of buildings, in which fluid medium flow rate is different and depends on a season. Equalising valve (1) with damper (2) has inlet (A) and outlet (B) and is installed after temperature-controlled element (3) connected to branch (4) of hydraulic network (5) with generally constant pressure (ΔP). The equalising valve is provided with measuring devices (7) of characteristic value of fluid medium circulating through equalising valve (1), position control devices (8) of damper (2) of equalising valve (1), data storage devices (11), in which internal and external parameters of equalising valve (1) are stored, and independent processing devices (10), which are designed so that automatic equalisation in branch (4) can be provided using magnitudes of characteristic value of fluid medium, which are obtained by means of measuring devices (7), control devices (8) and data stored in storage devices (11). There are methods for implementation of the above pressure equalisation operations.
EFFECT: group of inventions is aimed at easy operation, accessibility for any user, saving of time during installation and funds during the service life.
14 cl, 6 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to a method for optimised functioning as to power of a motor-driven pump in a hydraulic system with at least one self-adjustable consumer. Predetermined head (Hsoll) of the pump is controlled depending on its volumetric flow rate (Q) according to the controlled basic characteristic curve, which is determined by means of pre-determined specified value (HK) of the characteristic curve. Volumetric flow rate (Q) pumped with the pump is determined, and its trend (δQ) is determined, and depending on volumetric flow rate (Q) and/or its trend (δQ) the specified value of characteristic curve (HK) is increased when volumetric flow rate (Q) is increased, or decreased when volumetric flow rate (Q) is decreased.
EFFECT: invention is aimed at optimum matching of hydraulic power of the pump with its corresponding working point in a hydraulic system.
21 cl, 13 dwg
FIELD: machine building.
SUBSTANCE: valve has the housing 1 with input 3, output 4 and offtake branch pipes 5. Between internal hollow of the housing 1 and output 4 and offtake branch pipes 5 the seats 6, 7 are located. The housing 1 has a valve block with the valve trays 8, 9, installed on a rotary lever 10 with a possibility of contact of the tray 8 with the seat 6 in one extreme angular position of the rotary lever 10 and the tray 9 with the seat 7 in the other extreme angular position of the rotary lever 10. The axis 11 of the lever 10 is located between output 4 and offtake branch pipes 5 perpendicularly to the plain with the axes of these branch pipes. On the housing 1 fitting is installed, through which in parallel to axis 11 a movable rod of the valve block moving device passes The named facilities also contain the motion booster in the form of double-shoulder lever. The named rod from one end interacts with a heat head thruster, and from another one - with the smaller shoulder of the double-shoulder lever. The greater shoulder of the double-shoulder lever passes through a sealing element. The double-shoulder lever is spring-bias towards the side of pressing of the valve tray 8 to seat 6, adjacent to the output branch pipe 4.
EFFECT: improvement of accuracy of temperature regulation, lowering of hydraulic resistance to the heat carrier flow and improvement of convenience of valve operation.
5 cl, 3 dwg
SUBSTANCE: present invention relates to a method of controlling the maintaining water temperature in the water heater with the heat accumulator controlled by the electronic regulator. The method of controlling the water heater with a heat accumulator in which water heating is carried out by the heating element, controlled by the regulator, which can bring the water temperature to a variable target temperature, and which comprises: defining moment (tONk; t'ONi) of the start of heating to ensure intakes (Pk; Pi) of water comprises the following stages: at short time intervals (δW) all the w intakes are accounted (P1, …, Pi, …, Pw), which moment of start (ti) falls on the specified time window (Δtw) immediately following the current moment of time, and the time window (Δtw) is selected based on the type of water supply system, for which the water heater (1) is designed, and is sufficiently extended to include the moment (ti) of start of all the intakes (Pi), which moments (t'ONi) of the start of imaginary heating presumably precede the moments (t'ON) which correspond to (i-1) preceding intakes (P1, …, Pi-1), at the said moment (ti) of start of intake which falls on the time window (Δtw), the same number of imaginary intakes (P'1, …,P'i, …, P'w) is constructed each of which has the same moment (tw) of start as the start moment of the corresponding real intake (Pi), and the initial temperature (T'set.i) of the imaginary intake determined by adding the initial temperatures (Tset1, Tset2, …, Tset (i-1)) of all water intakes accounted for the time window (Δtw) and preceding the intake itself (Pi), and the corresponding initial temperature (Tset.i) of real intake, on the basis of which each initial temperature (Tset1, Tset2, …, Tset (i-1)) is determined of the optimum temperature (Topt) of discharge according to the formula T'set.i=Tset.i+(Tset1-Topt)+(Tset2-Topt)+…+(Tset(i-1)-Topt), for each of the imaginary intakes (P'1, …, P'i, …, P'w) the moment is calculated (t'ONi) of start of imaginary heating according to the formula t'ONi=ti-(T'set.i-Tm)/VTh, on reaching the earliest of the moments (t'ONi) of start of heating the target temperature (Ttarget) is set at an initial temperature level (T'set.i) of the corresponding imaginary intake (P'i), at that it is understood that the upper limit of the said target temperature (Ttarget) is the maximum set temperature (Tset.max), and to achieve the earliest of the moments (t'ONi) of the start of heating the temperature is maintained (Ttarget) equal to the maintaining temperature (Tstand-by), and the said maintaining temperature (Tstand-by) is the temperature maintained at moments of time remote from the moments of the intake.
EFFECT: invention enables in the planned mode to change with the passage of time the temperature in the water tank.
29 cl, 4 dwg
SUBSTANCE: essence of information-measuring and control system of optimisation of production and consumption of heat energy at the distributed facilities of heat supply comprises a first circuit with a heat source (gas boiler), a heat exchanger, a second circuit of the heat network, a temperature sensor in the straight pipeline of the first circuit, a temperature sensor in the return pipeline of the second circuit, a pressure sensor in the straight pipeline of the second circuit, a gas supply regulator, a gas flow sensor, a fan, an air temperature sensor, an air flow rate sensor, a temperature sensor of waste gases, a metre of produced heat energy, a multichannel microprocessor control unit of energy saving in production of heat energy, a memory unit, a control centre of receiving the information, a unit of control the combustion process in the boiler, a heat supply system, a control unit of heat energy consumption, and the first circuit with a heat source (gas boiler), the first output of which is connected to the input of the temperature sensor of waste gases and through the heat exchanger is connected to the second circuit of the heat network, is connected to the input of the temperature sensor in the straight pipeline of the first circuit, three outputs of the second circuit are connected to the inputs of the temperature sensor in the return pipeline, the pressure sensor in the straight pipeline, the metre of produced heat energy, the outputs of which are connected to the inputs of the multichannel microprocessor control unit of energy saving in production of heat energy, the output of the gas supply regulator by the of gas flow rate sensor is connected to the first input of the boiler, the output of the fan through the air temperature sensor, the air flow rate sensor is connected to the second input of the boiler, the outputs of the gas flow rate sensor, air flow rate sensor, air temperature sensor, temperature sensor of waste gases are connected to the inputs of the multichannel microprocessor control unit of energy saving in production of heat energy, the first output of which is connected to the input of the memory unit, the second output is connected to the input of the control centre of receiving information, the second, third, fourth inputs of the control centre of receiving information are connected to the outputs of the heat supply system by the control units of heat energy consumption, which fourth, fifth, sixth outputs of the second circuit are connected to the inputs of heat supply systems, the output of the control centre of receiving information by the control unit of the combustion process in the boiler is connected to the inputs of gas supply regulator and the fan. Thus, the information-measuring and control system of optimisation of production and consumption of heat energy at the distributed facilities of heat supply enables to optimise the process of production and consumption of heat energy at the distributed facilities of heat supply and to improve energy efficiency of operation of the presented facilities.
EFFECT: enhancing the technological capabilities of the device by controlling a variety of distributed facilities of heat supply in order to increase their efficiency in accordance with the concept of best available techniques.
SUBSTANCE: information and measuring system for monitoring of energy saving at production of thermal energy includes the first circuit with a heat source (a gas boiler), a heat exchanger, the second circuit of a heat network, a temperature sensor in a direct pipeline of the first circuit, a temperature sensor in a return pipeline of the second circuit, a pressure sensor in the direct pipeline of the second circuit, a gas supply control, a gas flow sensor, a fan, an air temperature sensor, an air flow sensor, a waste gas temperature sensor, a produced thermal energy metre, a multi-channel microprocessor energy saving monitoring unit at production of thermal energy, a memory unit, a dispatch information receiving centre; besides, the first circuit with the heat source (gas boiler), the first outlet of which is connected to the inlet of the waste gas temperature sensor and through the heat exchanger is connected to the second circuit of the heat network, is connected to the inlet of the temperature sensor in the direct pipeline of the first circuit; three outlets of the second circuits are connected to inlets of the temperature sensor in the return pipeline, a pressure sensor in the direct pipeline, a produced thermal energy metre, the outlets of which are connected to inlets of the multi-channel microprocessor unit for monitoring of energy saving at production of thermal energy; the outlet of the gas supply control is connected by means of the gas flow rate to the first boiler inlet; the fan outlet is connected by means of the air temperature sensor, the air flow sensor to the second boiler inlet; outlets of the gas flow sensor, the air flow sensor, the air temperature sensor, the waste gas temperature sensor are connected to inlets of the multi-channel microprocessor unit for monitoring of energy saving at production of thermal energy, the first outlet of which is connected to the inlet of the memory unit, and the other outlet is connected to the inlet of the dispatch information receiving centre.
EFFECT: invention allows optimising a thermal energy production process at distributed heat supply facilities and improving energy efficiency of operation of the presented items.
FIELD: power engineering.
SUBSTANCE: control system includes a source of heat, supply and return pipelines, a unit of coolant flow rate control, comprising a flow rate controller and sensors of flow rate, temperature and pressure, installed on supply and return pipelines, a circulating pump, a heat energy processor, linked to sensors and the controller. To achieve the technical result, the unit of coolant flow rate control is equipped with sensors of temperature of external and internal air, at the same time the unit of coolant flow rate control, the circulating pump and the heat energy processor are installed on a load with higher thermal load, other loads of the system are equipped with sensors of coolant flow rate and sensors of internal air temperature, connected to the heat energy processor.
EFFECT: control of heat consumption of a group of loads without installation of a full complex of automatics devices with preservation of the temperature mode, which are connected to heat networks of buildings, which makes it possible to save capital costs, service costs, saving of thermal and electric energy.
FIELD: machine building.
SUBSTANCE: first output of the first circuit with heat source, a gas boiler, is connected with discharge gas temperature gage input and, via heat exchanger, with heat network second circuit. Second circuit three outputs are connected with return pipeline pressure age, forward pipeline pressure gage, their outputs being connected with inputs of multichannel microprocessor unit for control over power saving control in heat power production. Gas feed controller output is connected via gas flow rate metre with boiler first inlet. Blower outlet is connected via air temperature gage and air flow rate gage with boiler second outlet. First output of said microprocessor unit is connected with memory unit with its second output connected to dispatcher data acquisition centre input. Output of the centre is connected via boiler combustion control unit with gas feed and blower controller inputs.
EFFECT: optimised heat production and higher efficiency.
FIELD: machine building.
SUBSTANCE: proposed system comprises at least two temperature control circuits 2, 3, 4. Pressure control unit 18, 19, 20 is arranged to simplify and to optimise power consumption in every circuit 2, 3, 4. Pressure control units 18, 19, 20 allow invariable pressure difference in appropriate circuit 2, 3, 4. Pressure control units 18, 19, 20 equalise pressure difference in all said circuits.
EFFECT: power savings, better convenience.
11 cl, 4 dwg
FIELD: machine building.
SUBSTANCE: valve seat is suggested for use with valves for fluids. Valve seat (302) contains ring (302) of valve seat, sealing assembly (422) and lock (424). Valve seat ring (302) has external surface (402) containing the first round groove (414) and second round groove (416) located near the first round groove (414) to form the step profile (418). Sealing assembly (422) is located in the first round groove (414), and lock (424) is located in the second round groove (416) and holds the sealing assembly (422). The valve seat interacts with socket (314) and valve body (304). If the valve stock (318) moves by the drive, the lock element (316) can open or close the hole (322) in the socket (314) to ensure possibility of flowing of flow termination between the input hole (308) and output hole (310).
EFFECT: improved design.
21 cl, 9 dwg