CN114811136A - Novel diaphragm type pressure reducing valve - Google Patents
Novel diaphragm type pressure reducing valve Download PDFInfo
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- CN114811136A CN114811136A CN202110066477.XA CN202110066477A CN114811136A CN 114811136 A CN114811136 A CN 114811136A CN 202110066477 A CN202110066477 A CN 202110066477A CN 114811136 A CN114811136 A CN 114811136A
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- Prior art keywords
- pressure
- pressure reducing
- diaphragm
- reducing valve
- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
- F16K31/1264—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded with means to allow the side on which the springs are positioned to be altered
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/06—Spindle sealings with stuffing-box ; Sealing rings with at least one ring attached to both spindle and housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
- G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
- G05D16/0636—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane characterised by the loading device of the membrane, e.g. spring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
本申请公开了一种新型膜片式减压阀。该新型膜片式减压阀包括减压阀体，所述减压阀体中设置阀杆、密封座、阀座、膜片、定位座，所述减压阀体上端设置减压阀盖，所述减压阀盖中设置主弹簧、弹簧上座、第二调节螺杆，所述主弹簧的弹簧力作用于膜片上，所述减压阀体上设置进气通道和出气通道，所述减压阀体、阀杆、密封座包围形成高压腔，所述减压阀体、膜片、阀座、阀杆包围形成稳压腔，所述阀杆上设置阀杆肩部，所述阀杆可以随膜片进行上下运动。
The present application discloses a novel diaphragm type pressure reducing valve. The novel diaphragm type pressure reducing valve includes a pressure reducing valve body, wherein a valve stem, a sealing seat, a valve seat, a diaphragm and a positioning seat are arranged in the pressure reducing valve body, and a pressure reducing valve cover is arranged on the upper end of the pressure reducing valve body. The pressure reducing valve cover is provided with a main spring, a spring upper seat, and a second adjusting screw. The spring force of the main spring acts on the diaphragm, and the pressure reducing valve body is provided with an air inlet channel and an air outlet channel. The pressure valve body, the valve stem and the sealing seat are surrounded to form a high pressure chamber, the pressure reducing valve body, the diaphragm, the valve seat and the valve stem are surrounded to form a pressure stabilization chamber, the valve stem is provided with a valve stem shoulder, the valve stem It can move up and down with the diaphragm.
Description
Technical Field
The invention relates to the technical field of gas pressure reduction, in particular to a novel diaphragm type pressure reducing valve.
Background
In recent years, the hydrogen fuel cell industry has rapidly developed, and the demand for hydrogen supply system products has also become higher and higher. The fuel of the hydrogen fuel cell is stored in a hydrogen storage bottle, the pressure in the common hydrogen storage bottle is 35MPa, the pressure of hydrogen in the hydrogen storage bottle which is newly developed at present reaches 70MPa, and when the hydrogen in the hydrogen storage bottle is conveyed to the fuel cell for use, the pressure in the hydrogen storage bottle is too high, and the hydrogen in the hydrogen storage bottle needs to be decompressed through a decompression valve. The pressure reducing valve in the current market is not mature, and has the problems of large pressure fluctuation at the rear end of pressure reduction, unstable output pressure and flow, sealing leakage, poor long-term use reliability and the like. The utility model provides a novel diaphragm formula relief pressure valve through the balanced structure design of diaphragm and valve rod for the operating pressure fluctuation of relief pressure valve is little, and output flow is stable, and is sealed reliable, the good reliability, and product processing technology is simple relatively, has reduced manufacturing cost.
Disclosure of Invention
The main aim at of this application provides a novel diaphragm formula relief pressure valve to it is big to solve current relief pressure valve pressure oscillation, and output flow is unstable, the poor scheduling problem of reliability.
To achieve the above object, according to one aspect of the present application, a novel diaphragm pressure reducing valve is provided.
According to the application, a novel diaphragm type pressure reducing valve comprises a pressure reducing valve body, wherein a valve rod, a sealing seat, a valve seat, a diaphragm and a positioning seat are arranged in the pressure reducing valve body, a pressure reducing valve cover is arranged at the upper end of the pressure reducing valve body, a main spring, a spring upper seat and a second adjusting screw rod are arranged in the pressure reducing valve cover, the spring force of the main spring acts on the diaphragm, the second adjusting screw rod can adjust the magnitude of the spring force, an air inlet channel and an air outlet channel are arranged on the pressure reducing valve body, the valve rod and the sealing seat are surrounded to form a high-pressure cavity, a pressure stabilizing cavity is formed by the pressure reducing valve body, the diaphragm, the valve seat and the valve rod, a valve rod shoulder is arranged on the valve rod, the valve rod can move up and down along with the diaphragm, high-pressure gas enters the high-pressure cavity from the air inlet channel, the valve rod shoulder and the sealing seat form a circulation channel, and the gas flows into the pressure stabilizing cavity, the diaphragm can be subjected to downward spring force, the upward air pressure and friction resistance of the pressure stabilizing cavity, the spring force can be adjusted by adjusting the stroke of the second adjusting screw rod, when the spring force is greater than the resultant force of the air pressure and the friction resistance, the diaphragm drives the valve rod to move downwards, the flow area between the valve rod and the sealing seat is increased, the pressure in the pressure stabilizing cavity is increased, so that the diaphragm reaches a balanced state, when the air pressure is greater than the resultant force of the spring force and the friction resistance, the diaphragm drives the valve rod to move upwards, the flow area between the valve rod and the sealing seat is reduced, the pressure in the pressure stabilizing cavity is reduced, so that the diaphragm reaches a balanced state, the flow passage area of the shoulder part of the valve rod is automatically adjusted through the stress balance of the diaphragm, the pressure reduction and the stable output of high-pressure gas are realized, and the reduced stable gas is output through the gas outlet channel, the stress condition of the valve rod is not influenced by the pressure value in the high-pressure cavity.
Further, set up high-pressure seal spare, stopper between decompression valve body and the valve rod when high-pressure intracavity pressure is higher the high-pressure seal spare lower extreme sets up the retaining ring the valve rod sets up the limiting plate with the lower extreme and screws up the piece, it is fixed in on the valve rod with the limiting plate to screw up the piece, set up spacing in the decompression valve body, the decompression valve body lower extreme sets up tight cap, tight cap inside sets up first adjusting screw, and spacing under setting in the first adjusting screw upper end, the valve rod is in spacing and upper limit stroke within range move down, the motion stroke size that valve rod can be adjusted to first adjusting screw, go up spacing and lower limiting position, also can place on other can spacing positions as required.
Furthermore, the diaphragm is fixed between the pressure reducing valve body and the pressure reducing valve cover, the upper end of the diaphragm is provided with the upper pressure plate, the lower end of the diaphragm is provided with the lower pressure plate and the screwing block, the upper pressure plate, the diaphragm and the lower pressure plate are screwed on the positioning seat by the screwing block, the pressure reducing valve cover and the diaphragm are surrounded to form a first containing cavity, the diaphragm realizes the sealing between the pressure stabilizing cavity and the first containing cavity, the number of the springs in the first containing cavity comprises 1, 2 and 3 or more, and the number of the specific springs is determined according to different product requirements.
Furthermore, a positioning pin is arranged between the valve rod and the positioning seat, the diaphragm and the positioning seat can drive the valve rod to move up and down together, and the connection mode between the positioning seat and the valve rod further comprises a threaded connection mode, a piston pin connection mode, a check ring connection mode, a bolt connection mode, a universal joint connection mode, a thrust contact connection mode, a clamping groove connection mode, an interference connection mode, a bolt connection mode and other modes capable of achieving connection.
Furthermore, the sealing structure form of the valve rod and the sealing seat comprises a plurality of sealing structure forms such as conical surface sealing, line contact sealing, spherical surface sealing, plane sealing and the like.
Furthermore, the sealing structure between the valve rod and the pressure reducing valve body comprises a plurality of sealing structure forms such as a universal plug seal, a universal plug and check ring seal, a sealing ring and check ring seal, a sealing ring and double check ring seal and the like.
Further, the pressure reducing valve comprises a first variant structure, a valve rod body is arranged in the pressure reducing valve body, the sealing seat is located between the pressure reducing valve body and the valve rod body, a sealing element is arranged between the valve rod body and the pressure reducing valve body, a valve rod spring is arranged between the valve rod and the first adjusting screw rod, a first channel is arranged on the valve rod body, and the first channel is communicated with the air inlet channel.
Furthermore, the pressure reducing valve comprises a second variant structure, a gas inlet joint, a pressure reducing valve core and a second channel are arranged on the pressure reducing valve body, a filter element is arranged between the gas inlet joint and the pressure reducing valve core, a throttling hole is arranged on the pressure reducing valve core, a gas inlet hole is arranged on the gas inlet joint, high-pressure gas enters from the gas inlet hole, after being filtered by the filter element, the high-pressure gas flows through the throttling hole for primary pressure reduction, the gas after primary pressure reduction is introduced into a high-pressure cavity, a flow gap between a shoulder part of the valve rod and the sealing seat carries out secondary pressure reduction on the gas, the gas after pressure reduction flows to the gas outlet channel, a plurality of pressure reducing valve cores can be arranged in the pressure reducing valve body according to requirements to realize multi-stage pressure reduction, a pressure limiting valve is arranged at the rear end of the second channel, when the pressure in the pressure stabilizing cavity is greater than a set value, the gas is discharged from the pressure limiting valve channel, and a stop valve is arranged at the rear end of the gas outlet channel, the stop valve can close the air outlet channel.
Further, the pressure reducing valve comprises a third variant structure, a lower spring seat is arranged at the lower end of the main spring and arranged at the upper end of the diaphragm, a valve rod spring is arranged at the lower end of the valve rod, and the valve rod is in contact with the diaphragm under the spring force action of the valve rod spring, so that the valve rod and the diaphragm can move upwards or downwards simultaneously.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic diagram of a diaphragm pressure relief valve according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a diaphragm pressure relief valve closed state according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a first variation of a diaphragm pressure relief valve according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a second variation of a diaphragm pressure relief valve according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a third variation of a diaphragm pressure relief valve according to an embodiment of the present application;
FIG. 6 is a schematic view of various sealing structures between a valve stem and a sealing seat according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a pressure relief valve body and a valve stem in different sealing configurations according to an embodiment of the present disclosure;
fig. 8 is a schematic structural view of different connection modes of the positioning seat and the valve rod according to the embodiment of the application.
Reference numerals:
01 a pressure reducing valve body; 02 a valve stem; 03 sealing seat; 04 a valve seat; 05, a membrane sheet; 06 positioning seats; 07 a first adjusting screw; 08 tightening the cap; 09 valve stem spring; 10 high pressure seals; 11 a retainer ring; 12 a limiting block; 13 a limiting plate; 14, screwing the block; 15, screwing the block; 16 a pressure relief valve cover; 17 positioning pins; 18 a lower press plate; 19, an upper pressing plate; 20, tightening the bolt; 21 a main spring; 22 a second spring; 23, spring upper seats; 24 a second adjusting screw; 25, screwing the block; limiting under 26; 27, upper limit; 28 a valve stem shoulder; 29 an intake passage; 30 air outlet channels; 31 a high pressure chamber; a 32 voltage stabilization cavity; 33 a seal member; 34 a seal member; 35 a valve stem body; 36 a first channel; 37 an air inlet connector; 38 a filter element; 39 a pressure reducing valve core; a 40 orifice; 41 air intake holes; 42 a second channel; 43 a pressure limiting valve; 44 a stop valve; 45, screwing the block; 46 a first volume; 47 spring lower seats.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 and 2, the application relates to a novel diaphragm type pressure reducing valve, including the pressure reducing valve body 01, set up valve rod 02 in the pressure reducing valve body 01, seal receptacle 03, valve seat 04, diaphragm 05, positioning seat 06, pressure reducing valve body 01 upper end sets up pressure reducing valve cover 16, set up main spring 21 in the pressure reducing valve cover 16, second spring 22, spring upper seat 23, second adjusting screw 24, main spring 21 and second spring 22's spring force acts on diaphragm 05, the size of main spring 21 and second spring 22 spring force can be adjusted to second adjusting screw 24, after the spring force adjusts to the target value, through screwing up piece 25 with second adjusting screw 24 fixed.
The pressure reducing valve body 01 is provided with an air inlet channel 29 and an air outlet channel 30, the pressure reducing valve body 01, the valve rod 02 and the sealing seat 03 are surrounded to form a high-pressure cavity 31, the pressure reducing valve body 01, the diaphragm 05, the valve seat 04 and the valve rod 02 are surrounded to form a pressure stabilizing cavity 32, the valve rod 02 is provided with a valve rod shoulder 28, and the valve rod 02 can move up and down along with the diaphragm 05.
Set up high-pressure seal 10, stopper 12 between 01 and the valve rod 02 of decompression valve body, when operating pressure was higher in high-pressure chamber 31, set up retaining ring 11 at high-pressure seal 10 lower extreme, set up limiting plate 13 and screw up piece 14 at the valve rod 02 lower extreme, screw up piece 14 and be fixed in the limiting plate 13 on the valve rod 02. Set up spacing 27 in the decompression valve body 01, the decompression valve body 01 lower extreme sets up tight cap 08, and tight cap 08 is inside to be set up first adjusting screw 07, and first adjusting screw 07 upper end sets up down spacing 26, and valve rod 02 moves at spacing 26 and 27 stroke range on the upper limit down, and first adjusting screw 07 can adjust the movement stroke size of valve 02, forms the back at first adjusting screw 07 regulation, is fixed first adjusting screw 07 by screwing up piece 15.
When the valve rod 02 moves to the upper limit 27, the valve rod 02 and the sealing seat 03 are in a sealing state, and the upper limit 27 can be arranged at other positions capable of being limited. When the valve stem 02 moves to the lower limit 26, the maximum opening degree between the valve stem shoulder 28 and the seal holder 03 is reached, and the lower limit 26 may be disposed at another position where the limit is possible.
The diaphragm 05 is fixed between the pressure reducing valve body 01 and the pressure reducing valve cover 16, the upper end of the diaphragm 05 is provided with an upper pressure plate 19, the lower end of the diaphragm 05 is provided with a lower pressure plate 18 and a screwing block 45, and the upper pressure plate 19, the diaphragm 05 and the lower pressure plate 18 are screwed on the positioning seat 06 by the screwing block 45. Tightening the bolts 20 fixes the pressure-reducing valve body 01 and the pressure-reducing valve cover 16 together. The pressure relief valve cover 16 and the diaphragm 05 surround the first chamber 46, and the diaphragm 05 seals the pressure maintaining chamber 32 from the first chamber 46.
The number of the springs in the first cavity 46 is not limited to the main spring 21 and the second spring 22, and the number of the springs includes 1, 2, 3 or more, and the specific number of the springs is designed according to different product requirements.
When the diaphragm type pressure reducing valve works, high-pressure gas enters the high-pressure cavity 31 from the air inlet channel 29, and a communication channel is formed between the valve rod shoulder 28 and the sealing seat 03. Gas flows from the high pressure chamber 31 into the pressure stabilizing chamber 32, the diaphragm 05 is subjected to downward spring force, upward gas pressure and frictional resistance of the pressure stabilizing chamber 32. The spring force can be adjusted to a target value by adjusting the stroke of the second adjusting screw 24. When the spring force is greater than the resultant force of the air pressure and the frictional resistance, the membrane 05 drives the valve rod 02 to move downwards, the flow area between the valve rod 02 and the sealing seat 03 is increased, and the pressure in the pressure stabilizing cavity 32 is increased, so that the membrane 05 is in a balanced state. When the air pressure is greater than the resultant force of the spring force and the frictional resistance, the diaphragm 05 drives the valve rod 02 to move upwards, the flow area between the valve rod 02 and the sealing seat 03 is reduced, the pressure in the pressure stabilizing cavity 32 is reduced, the diaphragm 05 is in a balanced state, the flow channel area of the shoulder 28 of the valve rod is automatically adjusted through the stress balance of the diaphragm 05, the decompression and stable output of high-pressure gas are achieved, and the decompressed stable gas is output through the gas outlet channel 30.
The stress condition of the valve rod 02 is not influenced by the pressure value in the high-pressure cavity 31.
As shown in fig. 3, a first modified structure of the diaphragm type pressure reducing valve is provided, in which a valve rod body 35 is disposed in a pressure reducing valve body 01, a sealing seat 03 is disposed between the pressure reducing valve body 01 and the valve rod body 35, a sealing member 33 is disposed between a valve rod 02 and the valve rod body 35, a sealing member 34 is disposed between the valve rod body 35 and the pressure reducing valve body 01, a valve rod spring 09 is disposed between the valve rod 02 and a first adjusting screw 07, a first passage 36 is disposed on the valve rod body 35, and the first passage 36 is communicated with an air inlet passage 29.
As shown in fig. 4, in a second modified structure of the diaphragm type pressure reducing valve, an air inlet joint 37, a pressure reducing valve core 39 and a second channel 42 are arranged on a pressure reducing valve body 01, a filter core 38 is arranged between the air inlet joint 37 and the pressure reducing valve core 39, an orifice 40 is arranged on the pressure reducing valve core 39, and an air inlet 41 is arranged on the air inlet joint 37. High-pressure gas enters from the gas inlet 41, is filtered by the filter element 38, flows through the throttling hole 40 to be subjected to primary pressure reduction, the gas subjected to primary pressure reduction is introduced into the high-pressure cavity 31, a flow gap between the valve rod shoulder 28 and the sealing seat 03 is used for secondary pressure reduction of the gas, and the gas subjected to pressure reduction flows to the gas outlet channel 30. A plurality of pressure reducing valve cores 39 can be arranged in the pressure reducing valve body 01 according to requirements so as to realize multi-stage pressure reduction. The rear end of the second channel 42 is provided with a pressure limiting valve 43, when the pressure in the pressure stabilizing cavity 32 is larger than a set value, gas is discharged from the pressure limiting valve 43, the rear end of the gas outlet channel 30 is provided with a stop valve 44, and the stop valve 44 can close the gas outlet channel 30.
As shown in fig. 5, in a third modified structure of the diaphragm type pressure reducing valve, the lower ends of the main spring 21 and the second spring 22 are provided with a lower spring seat 47, the lower spring seat 47 is arranged at the upper end of the diaphragm 05, the lower end of the valve rod 02 is provided with a valve rod spring 09, the valve rod 02 is kept in contact with the diaphragm 05 under the spring force of the valve rod spring 09, so that the valve rod 02 and the diaphragm 05 can move upwards or downwards simultaneously
As shown in fig. 6, a positioning pin 17 is arranged between the valve rod 02 and the positioning seat 06, the membrane 05 and the positioning seat 06 can drive the valve rod 02 to move up and down together, and the connection mode between the positioning seat 06 and the valve rod 02 further comprises a threaded connection, a piston pin connection, a check ring connection, a bolt connection, a universal joint connection, a thrust contact connection, a clamping groove connection, an interference connection, a bolt connection and other modes capable of realizing connection.
As shown in fig. 7, the sealing structure between the valve stem 02 and the sealing seat 03 includes a plurality of sealing structures such as a conical surface seal, a line contact seal, a spherical surface seal, and a plane seal.
As shown in fig. 8, the sealing structure between the valve rod 02 and the pressure reducing valve body 01 includes a plurality of sealing structure forms such as a flooding plug seal, a flooding plug + retainer ring seal, a sealing ring + retainer ring seal, a sealing ring + double retainer ring seal, and the like. The sealing elements such as the sealing ring, the check ring, the flooding plug structure and the like can be placed on the valve rod 02 for hole structure sealing, can also be placed on the pressure reducing valve body 01 for shaft structure sealing, and are designed and determined according to the installation and arrangement space of the pressure reducing valve.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. The application is not limited to the field of ejector technology, but also includes other technical fields requiring the application of control valve products. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110066477.XA CN114811136A (en) | 2021-01-19 | 2021-01-19 | Novel diaphragm type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110066477.XA CN114811136A (en) | 2021-01-19 | 2021-01-19 | Novel diaphragm type pressure reducing valve |
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| CN114811136A true CN114811136A (en) | 2022-07-29 |
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| CN202110066477.XA Pending CN114811136A (en) | 2021-01-19 | 2021-01-19 | Novel diaphragm type pressure reducing valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201935A (en) * | 2023-03-20 | 2023-06-02 | 杭州华惠阀门有限公司 | High-pressure multistage pressure reducing valve |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6371709A (en) * | 1986-09-12 | 1988-04-01 | Tlv Co Ltd | Automatic set reducing valve |
| US20020083980A1 (en) * | 2000-12-11 | 2002-07-04 | Youji Nakajima | Gas pressure-reducing valve |
| CN201339736Y (en) * | 2008-12-29 | 2009-11-04 | 北京航天万源煤化工工程技术有限公司 | Metal film-type pressure reducing valve |
| CN201462123U (en) * | 2009-04-30 | 2010-05-12 | 北京市科海龙华工业自动化仪器有限公司 | Pneumatic pressure-stabilizing pressure regulation valve |
| CN202215812U (en) * | 2011-08-29 | 2012-05-09 | 福建海洋铜业有限公司 | Novel pressure reducing valve |
| US20120247585A1 (en) * | 2011-03-30 | 2012-10-04 | Honda Motor Co., Ltd. | Pressure reducing valve having shutoff mechanism |
| CN205745495U (en) * | 2016-05-13 | 2016-11-30 | 姜建炎 | A kind of air relief valve being applied on high speed motor car |
| CN206904324U (en) * | 2017-06-29 | 2018-01-19 | 大连津利流体设备开发有限公司 | Pressure-reducing valve |
| CN109667968A (en) * | 2018-12-29 | 2019-04-23 | 捷锐企业(上海)有限公司 | The pressure reducing valve of balanced type valve core structure |
| CN110107720A (en) * | 2019-05-31 | 2019-08-09 | 捷锐企业(上海)有限公司 | A kind of pressure reducing valve with pressure chamber |
-
2021
- 2021-01-19 CN CN202110066477.XA patent/CN114811136A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6371709A (en) * | 1986-09-12 | 1988-04-01 | Tlv Co Ltd | Automatic set reducing valve |
| US20020083980A1 (en) * | 2000-12-11 | 2002-07-04 | Youji Nakajima | Gas pressure-reducing valve |
| CN201339736Y (en) * | 2008-12-29 | 2009-11-04 | 北京航天万源煤化工工程技术有限公司 | Metal film-type pressure reducing valve |
| CN201462123U (en) * | 2009-04-30 | 2010-05-12 | 北京市科海龙华工业自动化仪器有限公司 | Pneumatic pressure-stabilizing pressure regulation valve |
| US20120247585A1 (en) * | 2011-03-30 | 2012-10-04 | Honda Motor Co., Ltd. | Pressure reducing valve having shutoff mechanism |
| CN202215812U (en) * | 2011-08-29 | 2012-05-09 | 福建海洋铜业有限公司 | Novel pressure reducing valve |
| CN205745495U (en) * | 2016-05-13 | 2016-11-30 | 姜建炎 | A kind of air relief valve being applied on high speed motor car |
| CN206904324U (en) * | 2017-06-29 | 2018-01-19 | 大连津利流体设备开发有限公司 | Pressure-reducing valve |
| CN109667968A (en) * | 2018-12-29 | 2019-04-23 | 捷锐企业(上海)有限公司 | The pressure reducing valve of balanced type valve core structure |
| CN110107720A (en) * | 2019-05-31 | 2019-08-09 | 捷锐企业(上海)有限公司 | A kind of pressure reducing valve with pressure chamber |
Non-Patent Citations (1)
| Title |
|---|
| 杨火荣: "《节能控制系统及仪表》", 30 June 1990, 科学技术文献出版社重庆分社, pages: 144 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116201935A (en) * | 2023-03-20 | 2023-06-02 | 杭州华惠阀门有限公司 | High-pressure multistage pressure reducing valve |
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Application publication date: 20220729 |