Reducer

 

(57) Abstract:

The invention relates to agregatostroyeniya and is intended for use in gas systems compressed gas to the consumer. The goal of ensuring high precision reducible pressure in a wide range of changes in inlet pressure, reliability, ease of adjustment and maintainability. The inventive inlet pipe 5 is connected to the compressed gas and the outlet 2 to the consumer. The working medium from the container into the chamber 6, and then to the throttle modules A, B, C and so on, Each module operates within a certain subrange of the range of change of input pressure. The gas acts on the differential piston 12. The piston presses the plate 16 from the seat 15 and acts on the throttle element 17. In module is a four-choking gas: on needle orifice 24, the valve-saddle pair 15, 16, 16, 19 and the throttle element 17. When exceeding the inlet pressure from the specified subrange of change of output pressure plate sits on the side of the saddle 19. The throttle module overlaps. In work the next throttle module, configured at a higher pedeapsa. Screw the stop 21 is used to adjust the elastic force of the throttle element 17. 1 Il.

The invention relates to agregatostroyeniya and is intended for use in gas systems compressed gas to the consumer, which is required to ensure reliable operation of the gearbox and high precision reducible pressure in a wide range of changes in the input gas pressure. In particular, such systems include gas system compressed methane to the vehicle engine, the system of liquefied methane to the gas stove and individual consumers.

Known gearbox constant pressure, comprising a housing with inlet and outlet cavities, between which is placed a perforated disks, and associated with adjustable elastic regulatory body in the form of a cylinder of porous-metal located in a hollow stepped cylinder centered in the housing, and the step of larger diameter piston is on the side of the input cavity and fitted with an emphasis respective perforated disk, and an adjustable stop associated with another perforated disk [1].

The lack of gear - low range pressure is about changing bandwidth throttling body of the capillary structure in the form of a porous-metal is possible only when the axial compression under the action of the inlet pressure in the zone of elastic deformation. Compression of such a body in excess of the elastic deformation, it loses its elastic properties, plastic deformation and it turns into an orifice of constant cross-section, i.e. the gearbox fails. Obviously, the limitation on the amount of opportunities deformation throttling body leads to the limitation of the range of the pressure at the entrance.

A device for stabilizing the pressure at the pump, taken as a prototype, comprising a housing with inlet and outlet nozzles, which houses a spring-loaded throttle body in the form of a package of sequentially placed along the axis of the throttle elements from a material different capillary structures, and sensitive organ, connected by pipeline to the inlet side and is made in the form of a hollow sealed differential piston, and a throttle body is connected by a rod to the mechanism of its movement, made in the form of a piston, podpornega cavity which is connected to the inlet side and which is provided with a securing position, defined increments, equal step installation of the throttle elements [2]. This device allows you to extend the range of change of input pressure environment in which slozhnosti a schematic diagram of gearbox leads to poor maintainability and complexity of Assembly and disassembly of the gearbox and its adjustment. Thus, replacing (or permutation) of one or several of the throttle elements of the package, for example, when the violation of their health, or when the changeover gear unit for use in systems with other requirements of the degree of reduction involves complete disassembly of the gearbox. The design also does not provide the ability CIP podregulirovan elastic properties of each of the throttle elements of the package when you work at the stands after Assembly and in operation with developing gear assigned resource, accompanied by natural wear and changes in the characteristics of the gearbox. A sharp reduction in the reliability of operation and accuracy of a reducible pressure at the change of operation modes of the gearbox (the change in the value of the input pressure and the presence of significant difference (fluctuation) of the value of the input pressure operating modes due to the following. Use the gear switching mechanism of the throttle elements in the form of a spring-loaded piston has its negative sides (significant inertia and a tendency to autocleaner elastically suspended mass, which complicates the synchronous movement of the stem with throttle elements at the moment of impact is deistvuet raznoprofilnye highways, feeding the medium to the shaft and the differential piston. In design it is difficult to provide high requirements to the magnitude of the issued flow for two reasons. There is no corrective mechanism, for example, valve type, which automatically adjusts the change of the flow rate supplied to a throttle element at the moment of changing its throughput for elastic deformation of a differential piston, which can lead to local overpressures (hammer) under certain conditions of loading of the throttle element. In design does not exclude the possibility difficult to predict contamination of the environment on the lateral surfaces of the mated throttle elements, sequentially disposed along the axis of the rod, which distorts the throttling characteristic elements of the package and reduces operating characteristics of the gearbox. Therefore measures are required sealing these surfaces, leading to further complexity of the design, and, consequently, reduce its reliability.

The basis of the invention is the design of the gearbox, providing high accuracy reducible pressure in a wide range of change of input pressure is Edegem the gearbox, comprising a housing with inlet and outlet nozzles, which is placed between the throttle body with throttle elements made of elastic material different capillary structures and communicated to the inlet side of the sensitive element in the form of a hollow sealed differential piston, what is new is that the throttle body in the form of a removable throttle modules, each of which contains a throttle element and the sensing element, Podiatry to the saddle U-shaped plate mounted on the end of the throttle element from the sensing element and overlying the entrance to the sealed chamber formed by the throttle element, the casing module and the end of the threaded stop in the cavity of which is placed a throttle element and a second threaded emphasis, and threaded the needle orifice in the inner cavity of the piston, and the casing is made in two Rethimno United grounds, each of which has an internal sealed chamber and the slots for the same ends of the removable modules, and internal airtight chamber one of the reasons is connected with an inlet pipe and an inner sealed chamber other Foundation - outlet pipe.

The drawing shows the gearbox, eziba coupled with the outlet pipe 2, inside of which is formed of an airtight chamber 3, and the upper base 4, hermetically carving coupled to the input pipe 5 within which is formed an airtight chamber 6. The coupling of the upper and lower bases of the hull between them is performed by means of bolts 7 after installing the throttle modules a, b, C (only design includes installation of five modules, but two modules were not included in the cavity of the section). Each of the modules has a sealed casing 8 in the form of, for example, svenciausios bushings 9, 10, which are fixed on the turn with the nuts 11. Inside the casing 8 is compacted differential piston 12 with a through axial channel 13 and through the radial groove 14 on the top and centered relative to the seat 15 in the sleeve 10, to which pojeta U-shaped plate 16. The plate is installed on the end of the throttle element 17 and closes the entrance of the sealed chamber 18 formed by the casing 8, the throttle element 17 and the end-saddle 19 threaded stop 20. The throttle element 17 is located inside the threaded stops 20 and tightened from the end of the second threaded stop 21. A closed cavity 22 formed by the casing 8 and the piston 12 provided with a channel 23 with the atmosphere. Perhaps this connection forming with the axial channel 13 adjustable throttle cross section. Screw the stop 20 is intended for adjustment of the stroke H of the valve-saddle pairs, formed by the plate 16 and the side-saddle 19, affecting the flow rate and the differential pressure before throttle element 17. Screw the stop 21 is designed to control the elastic force of the throttle element 17 that defines the movement of the valve-saddle pair 16, 19 to close the opening under the action of the inlet pressure valve-saddle pairs 15, 16. For ease of configuration the needle orifice 24 and threaded lugs 20, 21 can be provided with a sealed liners, bred out of the housing.

The design of each of the five modules in the same way. The only difference is that each module has its own throttle element 16, having specified for this module of elasticity and porosity. Before installing each module goes offline tests, in which it is configured for providing the required pressure reduction in a given subrange of the input pressure. For example, if the value of a reducible pressure of 0.1 MPa, and the range of change of the input pressure is 10-0,1 MPa, the specified range is divided into several sub-bands according to the number of modules used. is gdy of the three modules is configured to work in his subrange of change of input pressure, when exceeding the specified range, he turned off from work, and when the reduction is again opened.

The gearbox works as follows.

Inlet pipe 5 is connected to the compressed gas and the outlet 2 to the consumer. It should be noted that at the beginning of operation when fully charged cylinder pressure environment maximum, and as spending environment pressure falls below a certain minimum. The working medium from the container into the chamber 6, and from it to the throttle input modules a, b, C, each of which operates in a particular subrange of the range of change of input pressure. Getting into the throttle module, the gas acts on the differential piston 12, which presses the end face on the plate 16, pressing it against the seat 15, and a throttle element 17. Thus there is a four-step throttling gas until it is output in the output cavity 3; on needle orifice 24, the valve-saddle pair 15, 16 and valve-saddle pair 16, 19 and the throttle element 17. However, the greater the input gas pressure in the cavity 6, the greater the force developed by the differential piston 12, and, consequently, the smaller the gap H and more loaded throttle element 17. This subrange change output pressure plate 16 sits on the side-saddle 19 and the throttle module overlaps. Due to the work of the throttle module And in the upper subrange of the input pressure other modules, etc. that are configured to lower levels of sub-ranges of change of input pressure, is covered by a respective valve pairs and not participate. As the expenditure of gas from the cylinder inlet pressure in the cavity 6 is reduced and when it will be included in the sub-range pressure, which is configured following the throttle module, in the last plate 16 moves away from the side of the seat 19 and the module starts to work by analogy with previously worked as a module And which, when the switch gear on the new subrange of the pressure plate 16 under the force of the elastic element 17 sits on the side-saddle 15, cutting off the flow through the gas flow in the output cavity 3.

With the further expenditure of gas from the cylinder inlet pressure in the cavity 6 is reduced to a lower range of pressures, which is configured following the throttle module, and the module is disabled by analogy with the previously rejected by module A. In this sequence work and the rest of the throttle modules, included in the reducer. When re-charging the cylinder with a maximum gas pressure of work gear on the gearbox and high precision reducing pressure in a wide range of changes in inlet pressure is achieved by expanding the functional abilities of each individual throttle module by the organization in its four-step reduction of the gas pressure, and parallel enabling them to ensure their work in their own sub-bands of operation, forming together a working range of change of input pressure reducer.

Ensuring ease of adjustment is achieved by introducing into the reducer simple design of regulatory mechanisms pad bore axial channel in differential piston clearance N defining the gas flow into the throttle element, and the elastic force of the throttle element.

High maintainability is achieved by mounting the gearbox standalone, pre-configured throttle modules and use of their mount, which is provided by the embodiment of the casing in the form of two meghrashen grounds.

The gearbox allows adjustment of the magnitude of a reducible pressure operating range inlet pressure required under reducing pressure to work in other systems that may be implemented by restructuring the reducing characteristics of each of the modules with the help of involved regulatory mechanisms, off of the work of one or of a number of modules that do not fit into the specified work debate gearboxes by screwing the screw stops 20, and by setting instead of these modules technological sealed stub adapter.

The gearbox design multiple, easily fits into a removable base case of any type of pipes, disks, toroidal housing and so on, and in some cases it is advisable to execute a removable modules in the form of threaded elements (similar for spark ignition vehicles).

In addition, the gearbox is able to work in the emergency valve, as when applying the input pressure exceeds the value of the maximum pressure from a specified range of change of input pressure, throttle all modules off of work (closed), which eliminates damage to pipelines for gear.

REDUCER, comprising a housing with inlet and outlet nozzles, which is placed between the throttle body with throttle elements made of elastic material different capillary structures and communicated to the inlet side of the sensitive element in the form of a hollow sealed differential piston, characterized in that the throttle body in the form of a removable throttle modules, each of which contains a throttle and sensitive elements drawn in the TA and blocking an input in a sealed chamber, formed by the throttle element, the casing module and the end of the threaded lock in the cavity which is located a throttle element and a second threaded emphasis, and threaded the needle orifice in the inner cavity of the piston, and the casing is made in two Rethimno United grounds, each of which has an internal sealed chamber and the slots for the same ends removable throttle modules, and internal airtight chamber one of the reasons is connected with an inlet pipe and an inner sealed chamber other Foundation - outlet pipe.

 

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Shut-off valve // 2005941

Cutoff device // 2249138

FIELD: oil producing industry.

SUBSTANCE: invention relates to pipe fittings, namely, to devices with rotary shutoff member and it can be used for automatic closing of high-pressure pipes at emergency pressure rise or drop in wells of oil and condensate fields. Proposed cutoff device contains housing and rotary shutoff member installed in housing. Said member is made in form of two rotary gates, one placed on the other. One of gates is provided with discharge hole, and other gate is blind. It covers hole is discharge gate. Device is furnished with lock holding shutoff member in open position, and sensitive element. The latter is made in form of spring-loaded rod connected with lock. Lock holds discharge rotary gate with hole in open position. Blind rotary gate is provided with stop being installed for engagement with sensitive element rod through stop.

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FIELD: pipeline fittings, particularly shutoff devices with blocking members sliding long seat surface between inlet and outlet channels and with rotary blocking member, used for gas flow regulation and emergency pipeline closing in the case of pressure increase/decrease.

SUBSTANCE: locking and regulating device comprises housing with through channel, seat, flat gate with sealing surfaces and orifices connected with drive by rod, rotary blocking member made as flap arranged on the flat gate and connected to fixing mechanism. The device is also provided with sensing member. The sensing member is arranged on the body in parallel to drive and is made as spring-loaded rod with extension made on rod end. Fixing mechanism is created as two rests. One rest is installed on the flap and extends transversely to it. Groove is made in rod extension transversal to through channel. Short arm of another rest connected to the rod is arranged in the groove, wherein above rest is rotary supported by pin. Long arm of above rest is installed so that it may cooperate with rest installed on the flap within the range of flat gate displacement.

EFFECT: simplified structure and increased operational reliability due to provision of rigid kinematical connection between sensing member rod and rest.

2 dwg

FIELD: general engineering.

SUBSTANCE: invention relates to safety valves and fittings for pipelines and it is designed for cutting off working medium in different pipelines at higher flow rates and low pressures in case of rise of pressure of liquid or gaseous medium in pipelines over tolerable values and in can be used in process lines of thermoelectric plants, nuclear power plants and gas and oil processing enterprises. Proposed safety unit contains housing with inlet and outlet branch pipes and direct-acting safety valve. The latter is arranged in housing and is provided with seat with through hole for engaging with locking member. Locking member is spring-loaded relative to housing and is installed for closing through hole in case of pressure drop of working medium. Locking member is furnished with screen enclosing the seat. Restrictor is arranged on inlet branch pipe. Restrictors of different design versions are provided. According restrictors of different design versions are provided. According to first design version, restrictor is made in form of spring-loaded piston installed on inlet branch pipe for changing area of ring hole between piston and screen when opening and closing the valve. According to second design versions, restrictor is made in form of disk of elastic flexible material for changing are of ring hole between piston and screen when opening and closing the valve. According to third design version, restrictor is made in form of spring-loaded disk of elastic flexible material installed on inlet branch pipe for movement and changing area of ring hole between piston and screen when opening and closing the valve.

EFFECT: prevention of influence of working medium forces in outlet channel of safety valve members at final stage of valve closing.

4 cl, 6 dwg

Cut-off valve // 2285180

FIELD: valving.

SUBSTANCE: cut-off valve comprises two housings with interconnected spaces. The first housing receives seat and gate movably mounted on the seat, and the second housing receives a mechanism for rotating and lifting the gate. The mechanism has movable bushing provided with the axle. One end of the lever is connected with the gate. The locator of position of the gate is made of electromagnet whose core is interposed between the lever and bushing. The core and bushing are made for permitting them to be connected when the gate is at the bottom position and to be disconnected when the gate is at the top position. The bushing is provided with the tip having split spring ring that is set in the ring groove provided in the tip, and core has the space for receiving the tip and groove with L-shaped cross-section for receiving the spring ring of the tip. The cut-off valve is additionally provided with the control unit and block for control of position of the gate. The control unit and the block for control of the position of the gate comprises light diodes, sealed-contact reed relays, and relay. The sealed-contact reed relays are mounted for permitting them to be controlled by electromagnetic field of the coil. The block for control of gate position has additional axles parallel to the axle of the mechanism for rotation and lifting and connected with it by means of a gear transmission and nut with the permanent magnet that can move with respect to the additional axle. The sealed-contact reed relay, light diodes, and control unit are connected with the power source through the relay and outputs for connection of transducers. From the side of the outlet, the housing of the mechanism for rotating and lifting is provided with lid having projecting outer part, and the axis of the control unit and block for control of the position of the gate passes through projecting part of the lid. The core and tip are provided with passages for leveling pressure.

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FIELD: valves.

SUBSTANCE: shutoff valving device comprises actuating mechanism made of housing with movable valve and movable bushing with seat, hydraulic pump, hydraulic tank, and solenoid valve. The bushing is made of a piston. The piston is positioned in the intermediate section and separates the space of the housing into control chamber and chamber connected with the atmosphere. The device has pressure transformer, safety device, and manually operated cock. The pressure transformer is made of a housing separated into top and bottom chambers with a baffle and coaxially mounted movable differential piston with axial passage. The passage connects the above-piston space of the top chamber with the bottom chamber. The valve cooperating with the seat is mounted at the face of the differential piston. The seat is mounted at the inlet. The cross-section of the top face of the differential piston is greater than that of the valve. The safety device is composed of the housing and seat, valve, and adjusting screw with spring mounted inside the housing. The control chamber of the actuating mechanism is connected with the outlet of the hydraulic pump and inlet of the pressure transformer through the pressure line. The outlet of the pressure transformer is connected with the inlets of the solenoid valve and safety device. The outlets of the electromagnetic valve and the safety device and above-piston space of the top chamber of the pressure transformer are in communication with the hydraulic tank through the drain pipeline. The manually operated cock is interposed between the pressure and drain pipelines.

EFFECT: enhanced reliability.

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Valving device // 2300688

FIELD: valving systems.

SUBSTANCE: valving device comprises housing, rotatable valving member mounted inside the housing, locking member that keeps the valving member opened, and sensitive member. The valving member is made of rotatable gate provided with sealing surface and opening. The sensitive member is made of a spring-loaded rod connected with the locking member. The opening of the rotatable gate receives the spring-loaded valving member provided with sealing surface in the open position. From the side opposite to the sealing surface, the rotatable gate is provided with the seat for permitting cooperation with the sealing surface of the valving member when it is closed.

EFFECT: simplified structure and enhanced reliability.

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FIELD: mechanical hydraulics, possible use for controlling pressure in hydraulic systems.

SUBSTANCE: two-stepped pressure valve contains plunger, which is made two-stepped with creation of circular shelf on it, area of which is less than the area of piston, and external surface of additionally made step forms an alternating cross-section circular channel with body clamp surface, which cross-section increases from the side of shelf.

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1 dwg

Control valve // 2303187

FIELD: valving systems.

SUBSTANCE: control valve comprises housing with inlet and outlet openings and valving member connected with the rod and is made of a spiral flexible member. The spiral member is made of a tension spring made of a shaped article whose surface is made of a Z-shaped sealing surface. The spiral member is mounted for permitting axial movement inside the axial opening in the seat-bushing. The seat-bushing is perforated with at least one shaped opening and is provided with sealing coating mounted on the sealing surfaces that are in a contact with the spiral member and housing. The spiral member is provided with sealing coating applied on the sealing surfaces of the turns of the spiral member. The seat-bushing and spiral member are made of a corrosion protection material.

EFFECT: simplified design and expanded functional capabilities.

4 dwg

Valving device // 2306472

FIELD: valving systems.

SUBSTANCE: valving device comprises rotating member made of a gate. The gate is locked in the open position by means of a sensor made of a spring-loaded rod. The device is additionally provided with the switch for switching the ranges of operation of the sensor. The rod of the switch is connected with the sensor by means of a lever for permitting vertical movement and is locked by the locking member depending on the adjusting values of pressure.

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Safety valve // 2307276

FIELD: mechanical engineering.

SUBSTANCE: invention relates to safety valves and it is designed for preventing destruction of working reservoirs under action of excess gauge pressure. Proposed safety valve has housing with intake and outlet holes, spring-loaded cup, breakable element made of easily melting material and heating element. Valve is provided with insert with ring groove. Said insert engages with rod. Breakable element is installed between insert and bottom of spring-loaded cup. Heating element is located around breakable element on outer surface of housing and is connected to supply source through thermal relay. Holes are made in base of insert. Second end of spring interacts with ball through seal. Said ball closes inlet hole.

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FIELD: hydraulic and pneumatic engineering.

SUBSTANCE: device has body with coaxially placed two serially opened locking organs. Coaxially to body guiding cylinder perforated with through apertures is fixed to first locking organ, placed with possible displacement relatively to guiding cylinder and interaction with saddle and stationary support. Second locking organ is made in form of decreased cope of the first one, provided with guiding cylinder, fixed to analogical cylinder of first locking organ on the side of flow output. First locking organ is made in form of hollow barrel moved along outer surface of guiding cylinder with unloading apertures in its bottom. Hollow barrel I loaded with back action spring. The latter is placed between its bottom and body. Second locking organ is loaded with back action spring, placed between its bottom and bottom of first locking organ. Saddle for first locking organ is placed on the side of flow output. Bottom of second locking organ is placed on the side of flow output. Bottom of first locking organ is connected to servo through rod. On each saddle of guiding cylinders of locking organs on the side of flow outputs protective element is placed. Protective element is in contact with front edge of barrel and is made in form of for example moveable ring spring-loaded relatively to saddle. This ring envelopes saddle and covers stationary compaction of locking couple in its open position on the side of the flow. Ring is provided with unloading apertures and limiter of movement in form of for example removable brackets. Brackets are evenly placed along circle in amount no less than three and fixed at the end of saddle. Servo is made in form of pneumatic cylinder adjuster coaxial to the body. Said cylinder is mounted outside gas flow and contains moving piston. Piston separates hollows of controlling and output pressures. In hollow of said pressure said rod connected to piston is placed. On the opposite side piston is supported by pusher. Pusher is mounted coaxially with its possible contact to sensor of position of locking organs ad coaxial to pusher of limiter of their movement, moved manually or automatically.

EFFECT: higher durability, broader functional capabilities.

1 dwg

FIELD: gas industry.

SUBSTANCE: device has controlling electromagnetic valve with inlet saddle, connected to gas-feeding channel, adjusting organ, driven by electric magnet, and outlet saddle, low pressure hollow with branch channel and separated from it by fixed saddle and cutting latch high pressure hollow, cylindrical chamber with moving element, interacting through pusher with cutting latch and forming in chamber on the side of pusher a working hollow, connected to controlling valve hollow, and on the opposite side an auxiliary hollow connected to atmosphere with mechanical spring positioned on it and adjusting element for given low pressure. Outlet saddle of controlling valve is connected via channel to low pressure hollow. Pusher is made in end, which kinematically interacts with cutting latch of moving saddle, connected by auxiliary hollow through aperture in moving element and pusher.

EFFECT: higher efficiency.

2 cl, 2 dwg

FIELD: hydro-pneumo-automatics.

SUBSTANCE: device has outer cylindrical body, vortex chamber coaxial to the latter for energy separation with circular channel for intake of hot flow and assembly for adjusting cross-section of tangential nozzle intake of compressed gas into chamber, positioned between diaphragm and chamber, and also utilizing ejector, while adjusting assembly, valve in particular, is made in form of diaphragm body moved in longitudinal fashion by servo rod, and interacting with outlet cross-section of nozzle intake via longitudinal tangential channels on the wall of cold end of vortex chamber, enveloping outer wall of valve, while channel for intake of hot flow to cold end of chamber by its outlet is connected to inlet of hot flow into ejector, while outer cylindrical body with side inlet of compressed gas and shut on the side of outlet of servo rod and hot end of vortex chamber has a spin diffuser directed along hot flow, with turbulence promoter, intermediate wall, held in flange groove of outer body, and also - outlet extending wall in such a way, that in ring-shaped area, forming an inlet collector across from side inlet of compressed gas, coaxially to outer body ejector pipes rigidly connected to walls are positioned with nozzles for outlet of hot flow in parallel to output of cold flow from diaphragm. Rod, mounted strictly along axis of vortex chamber, on the side of output of cold flow by ball support is connected to intersection of body of diaphragm and valve.

EFFECT: higher reliability, higher durability, higher efficiency.

4 cl, 1 dwg

FIELD: fluid-pressure automatics.

SUBSTANCE: device comprises tubular housing and spring-loaded self-centering sensor made of a truncated cone. The sensor and housing define a ring slot that converges in the direction of flow. The baffle inside the housing has throttling slot. The pipe is connected to the sensor at its center. A part of the pipe is made for permitting cooperation with the relief space downstream of the throttling slot. The inlet space of the housing is connected with the space upstream of the throttling slot through the by-pass that receives the throttling device made of a nozzle to define varying throttling cross-section.

EFFECT: enhanced precision.

1 cl, 1 dwg

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