CN214119059U - Normally open type self-operated pressure regulator - Google Patents
Normally open type self-operated pressure regulator Download PDFInfo
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- CN214119059U CN214119059U CN202023346870.4U CN202023346870U CN214119059U CN 214119059 U CN214119059 U CN 214119059U CN 202023346870 U CN202023346870 U CN 202023346870U CN 214119059 U CN214119059 U CN 214119059U
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Abstract
The utility model relates to the technical field of pressure regulators, in particular to a normally open type self-operated pressure regulator, which comprises a main valve body and a command valve, wherein the main valve body comprises an execution component and a valve body pressure regulating component which are detachably connected and arranged up and down, the command valve is arranged on the execution component, an upper pressure plate, a lower pressure plate and a leather membrane arranged between the upper pressure plate and the lower pressure plate are arranged in the execution component, and a pressure regulating valve seat, a pressure regulating piston pressure plate, a pressure regulating piston and a reverse cylinder are sequentially arranged in the valve body pressure regulating component from top to bottom; the inlet end and the outlet end of the main valve body are respectively connected with the port of the command valve through pipelines, and the lower membrane chamber below the membrane is communicated with the upper membrane chamber above the membrane and is respectively connected with the port of the command valve through a pipeline. The utility model provides a current voltage regulator structure complicated, the maintenance difficulty, adjust the poor, the big problem of during operation noise of precision.
Description
Technical Field
The utility model relates to a voltage regulator technical field, concretely relates to normally open type self-operated voltage regulator.
Background
Natural gas is used as a clean energy source, has a wide application range, is supplied from domestic gas of residents to industrial production fuel and automobile power, is considered to be completely integrated into various aspects of social production and life, plays an increasingly important role, and provides an important energy support for high-speed operation of modern human society like fuel oil and electric power. Therefore, the society puts forward higher and higher requirements on natural gas in each link of exploration, exploitation and transmission and distribution, and particularly in the link of transmission and distribution, the stability and the persistence of a gas source directly influence the quality of life of residents and influence the quality and the cost control of industrial users.
In the natural gas transmission and distribution project, the self-operated pressure regulator, as an indispensable control valve, forms the simplest and effective pressure reduction and stabilization standard distribution model with a shut-off valve and a safety valve, and bears the requirements of different users on various gas pressures, however, the self-operated pressure regulator is essentially a throttling and pressure reduction unit which self-regulates the opening of the valve according to the pressure change of the rear end or the front end (overpressure relief), bears overlarge pressure difference, so that the fluid can permanently wash throttling parts, a control unit (command valve) and execution components, and the washing strength of the self-operated pressure regulator is several times or even hundreds times of that of front and rear pipelines. Therefore, the self-operated pressure regulator can also fail in a non-specific period under different working conditions. The conventional self-operated pressure regulator used in the transmission and distribution project is basically of a normally closed type, namely, the initial state of the pressure regulator is a closed state, and the pressure regulator is also in a closed state (except that a sealing pair is not closed tightly due to flushing and blocking) in case of faults (command valve diaphragm damage, executive component diaphragm damage, command valve blockage and the like), so that the gas supply of the self-operated pressure regulator can be stopped when the faults occur at an indefinite time point. In addition to the above problems, the existing voltage regulators mainly have the following disadvantages: (1) the structure is complex and the maintenance is difficult; (2) the adjustment precision is poor; (3) the pressure of a pipeline system is unstable, so that potential safety hazards are caused to equipment; (4) the noise is large when the device works, and the device has influence on the environment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a normally open type self-operated voltage regulator, this voltage regulator are for taking commander formula self-operated voltage regulator, have solved current voltage regulator structure complicacy, maintenance difficulty, adjust the problem that the precision is poor, the during operation noise is big.
In order to achieve the purpose, the normally-open self-operated pressure regulator comprises a main valve body and a command valve, wherein the main valve body comprises an execution part and a valve body pressure regulating part which are detachably connected, the command valve is arranged on the execution part, an upper pressure plate, a lower pressure plate and a leather membrane arranged between the upper pressure plate and the lower pressure plate are arranged in the execution part, and a pressure regulating valve seat, a pressure regulating piston pressure plate, a pressure regulating piston and a reverse cylinder are sequentially arranged in the valve body pressure regulating part from top to bottom; the pressure regulating valve seat is connected with the end part of the pressure regulating piston pressing plate in a matching way, the pressure regulating piston pressing plate is fixed on the upper end surface of the pressure regulating piston, the pressure regulating piston is connected with the inner wall of the main valve body in a vertical sliding way, and the reverse cylinder is fixed in a groove arranged on the lower end surface of the pressure regulating piston;
the main valve body is internally provided with a pressure regulating piston pull rod, the pressure regulating piston pull rod sequentially penetrates through an upper pressure plate, a leather membrane, a lower pressure plate, a pressure regulating valve seat, a pressure regulating piston pressure plate, a pressure regulating piston and a reverse cylinder, the upper end of the pressure regulating piston pull rod is fixed on the upper end surface of the upper pressure plate, the lower end of the pressure regulating piston pull rod is fixed in the reverse cylinder, and the end part of the pressure regulating piston pull rod is provided with a return assembly;
the inlet end and the outlet end of the main valve body are respectively connected with the port of the command valve through pipelines, and the lower membrane chamber below the membrane is communicated with the upper membrane chamber above the membrane and is respectively connected with the port of the command valve through a pipeline.
The principle and the advantages are as follows:
1. the setting of valve body pressure regulating part, because pressure regulating disk seat, pressure regulating piston clamp plate, pressure regulating piston and reverse section of thick bamboo set gradually from the top down, the subassembly that replies moreover sets up in reverse section of thick bamboo for pressure regulating disk seat, pressure regulating piston clamp plate can normally open. When the atmospheric pressure of the lower membrane chamber below the involucra and the upper membrane chamber above the involucra changes, the pressure regulating piston pull rod can be driven to move upwards or downwards, because the return assembly is arranged at the bottommost part, the return assembly does not need the closing elastic force of the return members such as the inner spring arranged at the bottom, the rigidity of the return members such as the inner spring can be relatively smaller, the pressure regulating characteristic of the pressure regulating piston is superior to that of a normally closed self-operated pressure regulator, and the stability is more excellent.
2. The collocation setting of command valve, executive component and valve body pressure regulating part for normally open type self-operated pressure regulator possesses large-traffic regulation, and the high accuracy is adjusted, closes the sensitivity, and pressure setting is simple, and operation maintenance is convenient, functions such as high performance noise reduction.
Further, the executive component comprises an executive component upper cover and an executive component lower cover, the bottom end of the executive component upper cover is connected with the top end of the executive component lower cover through a fastening bolt, the valve body pressure regulating component comprises a valve body upper cover and a valve body, the bottom end of the executive component lower cover is connected with the valve body upper cover through a fastening bolt, and the valve body upper cover is connected with the valve body through a fastening bolt. The arrangement is convenient for the installation and the disassembly of the self-operated pressure regulator.
Further, the valve body pressure regulating component also comprises a valve body lower cover, the valve body lower cover is connected to the valve body through a fastening bolt, a first through hole is formed in the center of the valve body lower cover, a piston sleeve is arranged on the inner side surface of the valve body lower cover, and the piston sleeve is connected with the pressure regulating piston in a vertical sliding mode; the reversing cylinder is nested in the first through hole, an end cover is arranged on the outer end face of the first through hole, and the end cover is connected to the lower cover of the valve body through a fastening bolt. The self-operated pressure regulator is convenient to mount and dismount.
Furthermore, a second through hole is formed in the end cover, and a ball valve is arranged on the second through hole. The pressure is released through the ball valve, so that the self-operated pressure regulator is convenient to disassemble and assemble.
Further, reply the subassembly and include first fixing bolt, pressure regulating main spring, baffle and the second fixing bolt that the from the top down set gradually, first fixing bolt and pressure regulating piston pull rod threaded connection, pressure regulating main spring and baffle all overlap and establish on pressure regulating piston pull rod, the upper end of pressure regulating main spring offsets its lower extreme and baffle up end with reverse section of thick bamboo, second fixing bolt offsets with pressure regulating piston pull rod threaded connection and with baffle down end.
Further, the command valve comprises a first-stage load driving component and a second-stage load driving component, the first-stage load driving component and the second-stage load driving component, the first-stage load driving component comprises a first air inlet, a second air inlet and a first air outlet, the first air inlet is connected with the inlet end of the main valve body through a pressure guide pipe, the second air inlet is connected with the outlet end of the main valve body through a pressure guide pipe, and the first air outlet is connected with the lower membrane chamber through a pressure guide pipe; the secondary load driving assembly comprises a third air inlet and a second air outlet, the third air inlet is connected with the outlet end of the main valve body through a pressure guide pipe, and the second air outlet is connected with the upper diaphragm chamber through the pressure guide pipe.
Further, one-level load drive assembly includes first disk seat, including first valve clack, first decompression valve rod, first relief spring and the first decompression diaphragm that sets gradually in the first disk seat, be equipped with first cavity between first disk seat and the first valve clack, first cavity intercommunication first air inlet, first cavity side is equipped with the second cavity, and first relief spring and first decompression diaphragm all set up in the second cavity and the cover is established on first decompression valve rod, second cavity left side room intercommunication second air inlet, the first gas outlet of second cavity right side room intercommunication.
Further, second grade load drive assembly includes the second disk seat, be equipped with the third cavity in the second disk seat, including pressure regulating screw, pressure regulating spring, first pressure regulating diaphragm, command valve clack, the second pressure regulating diaphragm that set gradually and ending the spring in the third cavity, first pressure regulating diaphragm, command valve clack, second pressure regulating diaphragm divide into upper chamber, middle chamber and lower chamber with the third cavity, middle chamber and second cavity right side room and second gas outlet intercommunication, lower chamber and third air inlet intercommunication.
Drawings
Fig. 1 is a sectional view of a normally open type self-operated pressure regulator according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a command valve.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the valve comprises a command valve 1, an execution component upper cover 2, a membrane 3, an upper pressure plate 4, a lower pressure plate 5, an execution component lower cover 6, a valve body upper cover 7, a pressure regulating valve seat 8, a pressure regulating piston pressure plate 9, a pressure regulating piston 10, a ball valve 11, an end cover 12, a second fixing bolt 13, a valve body lower cover 14, a reversing cylinder 15, a piston sleeve 16, a pressure regulating main spring 17, a first fixing bolt 18, a baffle plate 19, a first valve seat 20, a first valve clack 21, a first pressure reducing valve rod 22, a first air inlet 23, a first pressure reducing spring 24, a first pressure regulating diaphragm 25, a first air outlet 26, a pressure regulating screw 27, a pressure regulating spring 28, a command valve clack 29, a first pressure regulating diaphragm 30, a second pressure regulating diaphragm 31, a stop spring 32, a third air inlet 33, a second air outlet 34, a second air inlet 35, a second valve seat 36, a load PL' valve port 37 and a load PL 38.
Examples
A normally open, self-operated pressure regulator, substantially as shown in figure 1: the main valve body comprises an execution component and a valve body pressure regulating component which are detachably connected and arranged up and down.
The commanding valve 1 is fixedly arranged on an executing component, the executing component comprises an executing component upper cover 2 and an executing component lower cover 6, and the bottom end of the executing component upper cover 2 is connected with the top end of the executing component lower cover 6 through a fastening bolt.
The valve body pressure regulating part comprises a valve body upper cover 7, a valve body and a valve body lower cover 14, the bottom end of the executing part lower cover 6 is connected to the valve body upper cover 7 through a fastening bolt, and the valve body upper cover 7 is connected to the valve body through a fastening bolt.
The execution component is internally provided with an upper pressure plate 4, a lower pressure plate 5 and a coating 3 arranged between the upper pressure plate 4 and the lower pressure plate 5.
A pressure regulating valve seat 8, a pressure regulating piston pressing plate 9, a pressure regulating piston 10 and a reverse cylinder 15 are sequentially arranged in the valve body pressure regulating part from top to bottom; the pressure regulating valve seat 8 is connected with the end part of the pressure regulating piston pressing plate 9 in a matching way, the pressure regulating piston pressing plate 9 is fixed on the upper end surface of the pressure regulating piston 10, the pressure regulating piston 10 is connected with the inner wall of the main valve body in a vertical sliding way, and the reverse cylinder 15 is fixed in a groove arranged on the lower end surface of the pressure regulating piston 10;
the main valve body is provided with a pressure regulating piston pull rod which sequentially penetrates through the upper pressure plate 4, the leather membrane 3, the lower pressure plate 5, the pressure regulating valve seat 8, the pressure regulating piston pressure plate 9, the pressure regulating piston 10 and the reverse cylinder 15. The upper end of the pressure regulating piston pull rod is fixed on the upper end surface of the upper pressure plate 4 through a bolt, the reverse cylinder 15 is in an inverted barrel shape, the lower end of the pressure regulating piston pull rod is fixed in the reverse cylinder 15 through a bolt, and the end part of the pressure regulating piston pull rod is provided with a return assembly.
The valve body lower cover 14 is connected to the valve body through a fastening bolt, a first through hole is formed in the center of the valve body lower cover 14, a piston sleeve 16 is arranged on the inner side face of the valve body lower cover 14, and the piston sleeve 16 is connected with the pressure regulating piston 10 in a vertical sliding mode. The reverse cylinder 15 is nested in the first through hole, and the lower end part of the reverse cylinder 15 is flush with the lower end part of the first through hole. An end cover 12 is arranged on the outer end face of the first through hole, and the end cover 12 is connected to a valve body lower cover 14 through fastening bolts. The end cover 12 is provided with a second through hole, and the second through hole is provided with a ball valve 11.
The restoring assembly comprises a first fixing bolt 18, a pressure regulating main spring 17, a baffle plate 19 and a second fixing bolt 13 which are arranged from top to bottom in sequence. The first fixing bolt 18 is in threaded connection with the pressure regulating piston pull rod, the pressure regulating main spring 17 and the baffle plate 19 are sleeved on the pressure regulating piston 10 pull rod, the upper end of the pressure regulating main spring 17 abuts against the reverse barrel 15, the lower end of the pressure regulating main spring abuts against the upper end face of the baffle plate 19, and the second fixing bolt 13 is in threaded connection with the pressure regulating piston 10 pull rod and abuts against the lower end face of the baffle plate 19.
As shown in fig. 2, the commanding valve 1 comprises a primary load driving assembly and a secondary load driving assembly.
The first-stage load driving assembly comprises a first air inlet 23, a second air inlet 35 and a first air outlet 26, the first air inlet 23 is connected with the inlet end of the main valve body through a pressure guide pipe, the second air inlet 35 is connected with the outlet end of the main valve body through a pressure guide pipe, and the first air outlet 26 is connected with the lower membrane chamber through a pressure guide pipe.
The primary load driving assembly comprises a first valve seat 20, and the first valve seat 20 comprises a first valve clack 21, a first pressure reducing valve rod 22, a first pressure reducing spring 24 and a first pressure reducing diaphragm which are arranged in sequence. A first cavity is provided between the first valve seat 20 and the first flap 21, the first cavity communicating with a first inlet port 23. The right side surface of the first cavity is provided with a second cavity, and the first pressure reducing valve rod 22 penetrates through the first cavity and the second cavity and keeps good air tightness between the first cavity and the second cavity. The first pressure reducing spring 24 and the first pressure reducing diaphragm are both arranged in the second cavity and sleeved on the first pressure reducing valve rod 22, the left chamber of the second cavity is communicated with the second air inlet 35, and the right chamber of the second cavity is communicated with the first air outlet 26. The first pressure-reducing stem 22 is fixed at the left end to the first flap 21 and at the left end to the first pressure-reducing diaphragm.
The secondary load driving assembly comprises a third air inlet 33 and a second air outlet 34, the third air inlet 33 is connected with the outlet end of the main valve body through a pressure guide pipe, and the second air outlet 34 is connected with the upper diaphragm chamber through the pressure guide pipe.
Second grade load drive assembly includes second valve seat 36, is equipped with the third cavity in the second valve seat 36, including pressure regulating screw 27, pressure regulating spring 28, first pressure regulating diaphragm 25, command valve clack 29, second pressure regulating diaphragm 31 and the spring 32 that ends that sets gradually in the third cavity, first pressure regulating diaphragm 25, command valve clack 29, second pressure regulating diaphragm 31 divide into upper chamber, middle chamber and lower chamber with the third cavity, and middle chamber and second cavity right side room and second gas outlet 34 communicate, and lower chamber and third gas inlet 33 communicate.
The specific implementation process is as follows:
the self-operated pressure regulator of the embodiment mainly comprises three parts: the pressure regulating valve comprises a driving part, an executing part and a pressure regulating throttling part, wherein the driving part corresponds to the command valve 1, the executing part corresponds to an executing part, and the pressure regulating throttling part corresponds to a valve body pressure regulating part.
The driving pressure of the self-operated pressure regulator is a result of the valve front pressure P1 acting as a power source in cooperation with the valve rear pressure P2, the first pressure reducing spring 24, the cut-off spring 32, the pressure regulating spring 28, the first valve flap 21 (load PL valve flap), and the pilot valve flap 29 (load PL' valve flap). The post-valve pressure acts on the commanding valve 1 diaphragm (the first pressure regulating diaphragm 25 and the second pressure regulating diaphragm 31) by the pressure regulating spring 28, the stop spring 32 and the post-valve pressure P2 to control the opening degree of the load PL 'valve port 37, and the load pressure PL' is dynamically generated. By adjusting the pressure regulating spring 28 of the pilot valve 1, the post-valve demand pressure P2 can be obtained. Meanwhile, the P2 and the first relief spring 24 control the opening of the load PL valve port 38, and dynamically generate the load pressure PL. By controlling the load PL and the load PL ', the load difference (PL-PL') is varied as the actual called-out pressure P2 is varied, and this load difference is used as the driving pressure of the actuator.
When the downstream air consumption is reduced to increase P2, the opening of the valve port 38 of the command valve 1 for providing the load PL is increased, the opening of the valve port 37 of the load PL 'is decreased, the generated load difference (i.e. the actuating part driving pressure) Δ P drive is increased to PL-PL', the balance between the actuating part of the pressure regulator and the pressure regulating main spring 17 is broken due to the increase of the load difference, the actuating part drives the pressure regulating piston 10 to move upwards, the opening of the valve port of the pressure regulating throttling part of the main valve (the opening between the pressure regulating valve seat 8 and the pressure regulating piston pressure plate 9) is decreased, the throttling effect is increased on the air flowing through the main valve, and the rising trend of the outlet pressure P2 of the pressure regulator is limited.
When the downstream air consumption is continuously reduced, the Δ P drive is continuously increased as PL-PL', the execution part continuously drives the pressure regulating piston 10 to move upward, the opening of the valve port of the main valve pressure regulating throttling part (the opening between the pressure regulating valve seat 8 and the pressure regulating piston pressure plate 9) is further reduced, the pressure of the gas flowing through the main valve is continuously increased, and the rising trend of the pressure regulator outlet pressure P2 is limited until the pressure regulating piston 10 is closed.
When the downstream air consumption increases and P2 decreases, the opening degree of the load PL valve port 38 decreases, the opening degree of the load PL 'valve port 37 increases, and Δ P drive decreases as PL-PL', the balance between the regulator actuator and the pressure regulating main spring 17 is broken by the decrease in the load difference, the pressure regulating main spring 17 pushes the pressure regulating piston 10 downward, the pressure regulating throttling portion opens from a closed state, throttling of the air flowing through the main valve is reduced, the downward tendency of P2 is restricted, and the air supply amount is increased.
The self-operated pressure regulator (normally open type) (the initial state and the fault state are normally open, except for medium reason blocking) of the scheme is normal pressure regulation and fault full opening, and is matched with the self-operated pressure regulator (normally closed type) for use to form a working-monitoring mode.
The above descriptions are merely examples of the present invention, and common general knowledge of known specific structures and characteristics of the embodiments is described herein, and those skilled in the art will know all the common technical knowledge in the technical field of the invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A normally open type self-operated pressure regulator is characterized in that: the automatic control valve comprises a main valve body and a command valve, wherein the main valve body comprises an execution part and a valve body pressure regulating part which are detachably connected with each other from top to bottom, the command valve is arranged on the execution part, an upper pressing plate, a lower pressing plate and a film arranged between the upper pressing plate and the lower pressing plate are arranged in the execution part, and a pressure regulating valve seat, a pressure regulating piston pressing plate, a pressure regulating piston and a reverse cylinder are sequentially arranged in the valve body pressure regulating part from top to bottom; the pressure regulating valve seat is connected with the end part of the pressure regulating piston pressing plate in a matching way, the pressure regulating piston pressing plate is fixed on the upper end surface of the pressure regulating piston, the pressure regulating piston is connected with the inner wall of the main valve body in a vertical sliding way, and the reverse cylinder is fixed in a groove arranged on the lower end surface of the pressure regulating piston;
the main valve body is internally provided with a pressure regulating piston pull rod, the pressure regulating piston pull rod sequentially penetrates through an upper pressure plate, a leather membrane, a lower pressure plate, a pressure regulating valve seat, a pressure regulating piston pressure plate, a pressure regulating piston and a reverse cylinder, the upper end of the pressure regulating piston pull rod is fixed on the upper end surface of the upper pressure plate, the lower end of the pressure regulating piston pull rod is fixed in the reverse cylinder, and the end part of the pressure regulating piston pull rod is provided with a return assembly;
the inlet end and the outlet end of the main valve body are respectively connected with the port of the command valve through pipelines, and the lower membrane chamber below the membrane is communicated with the upper membrane chamber above the membrane and is respectively connected with the port of the command valve through a pipeline.
2. A normally open, self-operated pressure regulator according to claim 1, wherein: the valve body pressure regulating component comprises a valve body upper cover and a valve body, the bottom end of the executing component lower cover is connected to the valve body upper cover through a fastening bolt, and the valve body upper cover is connected to the valve body upper cover through a fastening bolt.
3. A normally open, self-operated pressure regulator according to claim 2, wherein: the valve body pressure regulating component also comprises a valve body lower cover, the valve body lower cover is connected to the valve body through a fastening bolt, a first through hole is formed in the center of the valve body lower cover, a piston sleeve is arranged on the inner side surface of the valve body lower cover, and the piston sleeve is connected with the pressure regulating piston in a vertical sliding mode; the reversing cylinder is nested in the first through hole, an end cover is arranged on the outer end face of the first through hole, and the end cover is connected to the lower cover of the valve body through a fastening bolt.
4. A normally open, self-operated pressure regulator according to claim 3, wherein: and a second through hole is formed in the end cover, and a ball valve is arranged on the second through hole.
5. A normally open, self-operated pressure regulator according to claim 1, wherein: reply the subassembly including first fixing bolt, pressure regulating main spring, baffle and the second fixing bolt that from the top down set gradually, first fixing bolt and pressure regulating piston pull rod threaded connection, pressure regulating main spring and baffle all overlap and establish on pressure regulating piston pull rod, the upper end of pressure regulating main spring offsets its lower extreme and baffle up end with reverse section of thick bamboo, second fixing bolt offsets with pressure regulating piston pull rod threaded connection and with baffle down end.
6. A normally open, self-operated pressure regulator according to claim 1, wherein: the command valve comprises a primary load driving assembly and a secondary load driving assembly, the primary load driving assembly and the secondary load driving assembly comprise a first air inlet, a second air inlet and a first air outlet, the first air inlet is connected with the inlet end of the main valve body through a pressure guide pipe, the second air inlet is connected with the outlet end of the main valve body through a pressure guide pipe, and the first air outlet is connected with the lower membrane chamber through a pressure guide pipe; the secondary load driving assembly comprises a third air inlet and a second air outlet, the third air inlet is connected with the outlet end of the main valve body through a pressure guide pipe, and the second air outlet is connected with the upper diaphragm chamber through the pressure guide pipe.
7. A normally open, self-operated pressure regulator according to claim 6, wherein: one-level load drive assembly includes first disk seat, including first valve clack, first decompression valve rod, first decompression spring and the first decompression diaphragm that sets gradually in the first disk seat, be equipped with first cavity between first disk seat and the first valve clack, first cavity intercommunication first air inlet, first cavity side is equipped with the second cavity, and first decompression spring and first decompression diaphragm all set up in the second cavity and the cover is established on first decompression valve rod, second cavity left room intercommunication second air inlet, the first gas outlet of second cavity right room intercommunication.
8. A normally open, self-operated pressure regulator according to claim 7, wherein: second grade load drive assembly includes the second disk seat, be equipped with the third cavity in the second disk seat, including pressure regulating screw, pressure regulating spring, first pressure regulating diaphragm, command valve clack, second pressure regulating diaphragm and the spring by that set gradually in the third cavity, first pressure regulating diaphragm, command valve clack, second pressure regulating diaphragm divide into upper chamber, middle chamber and lower chamber with the third cavity, middle chamber and second cavity right side room and second gas outlet intercommunication, lower chamber and third air inlet intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023346870.4U CN214119059U (en) | 2020-12-31 | 2020-12-31 | Normally open type self-operated pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023346870.4U CN214119059U (en) | 2020-12-31 | 2020-12-31 | Normally open type self-operated pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214119059U true CN214119059U (en) | 2021-09-03 |
Family
ID=77493298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023346870.4U Active CN214119059U (en) | 2020-12-31 | 2020-12-31 | Normally open type self-operated pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214119059U (en) |
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2020
- 2020-12-31 CN CN202023346870.4U patent/CN214119059U/en active Active
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