CN113137507A - Command type pressure reducer - Google Patents
Command type pressure reducer Download PDFInfo
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- CN113137507A CN113137507A CN202110548663.7A CN202110548663A CN113137507A CN 113137507 A CN113137507 A CN 113137507A CN 202110548663 A CN202110548663 A CN 202110548663A CN 113137507 A CN113137507 A CN 113137507A
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- 239000003638 reducing agent Substances 0.000 title claims abstract description 166
- 238000009434 installation Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 53
- 210000004907 Glands Anatomy 0.000 claims description 18
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 19
- 239000000945 filler Substances 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 230000000087 stabilizing Effects 0.000 description 1
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Classifications
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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
- 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
Abstract
The utility model relates to a commander type pressure reducer, relate to the field of pressure reducer, it includes the valve body, main valve element subassembly, the mouth is met to the entry, export is met the mouth, pressure reducer commander valve and piston, the valve body is the setting of one end open-ended cavity casing form, main valve element subassembly demountable installation is inside the valve body, the mouth is met to the entry, export is met the mouth and all is connected with valve body threaded connection, and the mouth is met to the entry, export is met the mouth and all is communicated the setting with the valve body, pressure reducer commander valve is arranged in one side of valve body open end and is linked to each other with the opening position screw thread of valve body, the piston slides and sets up inside the valve body, and the piston is arranged in the middle of main valve element subassembly and pressure reducer commander valve; the piston is provided with a communicating hole, and the pressure reducer commanding valve is provided with an air inlet hole. This application has the effect that improves and carry out accurate control to pressure reducer export pressure.
Description
Technical Field
The application relates to the field of pressure reducers, in particular to a command type pressure reducer.
Background
The pressure reducer is also called a pressure reducing valve, and reduces pressure of gas or liquid with different pressures, so that the pressure of an outlet is stabilized in a certain range, and the equipment at the rear section works stably and reliably.
The existing high-pressure large-flow pressure reducer is limited by the size of a spring element and the selection of a sealing structure, and is generally large in size, so that the flexible application of the pressure reducer is limited; secondly, the valve core of the traditional pressure reducer is usually designed to be unbalanced in pressure, when the inlet pressure changes greatly, the outlet pressure also changes, the curve of the output pressure and the input pressure is mostly an arch curve, the accurate control of the outlet pressure is difficult to realize, and the application range of the pressure reducer is limited; and thirdly, the conventional open-loop commanding pressure reducer commands the valve to work in a locking state, and the pressure is in a corresponding pressure range during locking, so that the control precision of the pressure at the outlet of the open-loop pressure reducer is not high.
Disclosure of Invention
In order to improve the accurate control to pressure reducer outlet pressure, this application provides a commander formula pressure reducer.
The application provides a command formula pressure reducer adopts following technical scheme:
a command type pressure reducer comprises a valve body, a main valve element assembly, an inlet connecting pipe nozzle, an outlet connecting pipe nozzle, a pressure reducer command valve and a piston, wherein the valve body is a cavity shell with one open end; the piston is provided with a communicating hole, and the pressure reducer commanding valve is provided with an air inlet hole.
By adopting the technical scheme, when the command type pressure reducer is used, high-pressure gas or liquid enters from the position of the inlet connecting pipe nozzle, when the gas or liquid of the main path reaches the position of the main valve element assembly, the main valve element assembly performs flow equalization on the high-pressure gas or liquid after flowing in, and when the pressure of the outlet connecting pipe nozzle is higher than the outlet pressure of the command valve of the pressure reducer, the piston moves towards the direction close to the command valve of the pressure reducer, so that the opening degree of the main valve element assembly is reduced, the flow is reduced, and the pressure is reduced; when the pressure of the outlet connecting pipe nozzle is lower than the outlet pressure of the pressure reducer command valve, the piston moves towards the direction far away from the pressure reducer command valve, the opening degree of the main valve element assembly is increased, the flow is increased, the pressure of the outlet connecting pipe nozzle is increased, and therefore the self-adaptive adjustment of the pressure of the outlet connecting pipe nozzle is achieved; the command path enters the pressure reducer command valve through the communication hole and the air inlet hole, high-pressure gas or liquid enters one side of the piston close to the pressure reducer command valve, so that the pressure of one side of the piston close to the pressure reducer command valve is stable, and the piston exhausts through an outlet of the pressure reducer command valve to form an exhaust path; to sum up, this commander formula pressure reducer quality is light, compact, and withstand voltage is high, and output pressure is accurate, steady, and main spool subassembly and pressure reducer command valve mutually support and improve the accurate control to pressure reducer outlet pressure.
Optionally, the main spool assembly includes a main spool return spring, a pressure reducer main spool and a spool seat; one end of the valve core seat, which is opposite to the command valve of the pressure reducer, is provided with a connecting hole, and the position of the piston, which is opposite to the connecting hole, is inserted into the connecting hole; one end of the valve core seat, which is far away from the pressure reducer command valve, is open, and a main valve core of the pressure reducer is inserted from one open end of the valve core seat and is clamped with the piston; the main valve element return spring is clamped at one end of the main valve element of the pressure reducer, which is far away from the piston, and the other end of the main valve element return spring is inserted in the shell of the valve body to form clamping.
By adopting the technical scheme, the main valve element assembly equalizes flow of high-pressure gas or liquid after flowing in, when the pressure of the outlet connecting pipe nozzle is higher than the outlet pressure of the pressure reducer command valve, the main valve element return spring stretches, and the main valve element return spring cooperates with the main valve element of the pressure reducer to push the piston to move towards the direction close to the pressure reducer command valve, so that the opening degree of the main valve element assembly is reduced, the flow is reduced, and the pressure is reduced; when the pressure of the outlet connecting pipe nozzle is lower than the outlet pressure of the pressure reducer command valve, the main valve element return spring is compressed, the length of the main valve element return spring is reduced, the main valve element return spring is matched with the main valve element of the pressure reducer to pull the piston to move towards the direction far away from the pressure reducer command valve, the opening degree of the main valve element assembly is increased, the flow is increased, and the pressure of the outlet connecting pipe nozzle is increased, so that the self-adaptive adjustment of the pressure of the outlet connecting pipe nozzle is realized, and the use is efficient and stable.
Optionally, the main spool assembly further comprises a main spool seal and a main spool seal gland; the outer surface of the main valve core sealing gasket is provided with a clamping groove, and the main valve core sealing gasket is sleeved on the main valve core of the pressure reducer and clamped with the main valve core of the pressure reducer; the main valve core sealing gasket gland is sleeved on the main valve core sealing gasket, and the main valve core sealing gasket gland is covered with the clamping groove of the main valve core sealing gasket and then is connected with the main valve core thread of the pressure reducer again.
Through adopting above-mentioned technical scheme, main valve element sealing gasket cover is established on pressure reducer main valve element, strengthen the stability of being connected between pressure reducer main valve element and the valve core seat, improve the sealing performance of main valve element subassembly in the use, the draw-in groove is seted up to the surface that main valve element was sealed simultaneously, close the back with main valve element sealing gasket gland and main valve element sealing gasket lid, make main valve element sealing gasket gland and pressure reducer main valve element carry out threaded connection again, main valve element sealing gasket gland strengthens being sealed to be connected between main valve element and the pressure reducer main valve element, further improve the stability of main valve element sealing gasket gland in the use.
Optionally, one end of the valve core seat close to the connecting hole is provided with a plurality of exhaust equalizing holes, and the plurality of exhaust equalizing holes are uniformly arranged along the circumferential surface of the valve core seat at intervals; the valve core seat is kept away from the one end of connecting hole and has been seted up the flow equalizing hole that admits air, and the flow equalizing hole that admits air has seted up a plurality ofly, and a plurality ofly admits air the even interval setting of flow equalizing hole along the circumferential surface of valve core seat.
By adopting the technical scheme, the air inlet flow equalizing hole on the valve core seat is used for equalizing the flow of inlet air, so that the impact of the inlet air on the main valve core assembly is reduced, and the adaptability of the command type pressure reducer is improved; the exhaust flow equalizing hole on the valve core seat equalizes exhaust flow, so that the flow field at the main valve core of the pressure reducer is as uniform as possible, the local pressure is prevented from being too high or too low, the influence on the coaxiality of the valve core is reduced, and the service life of the valve core is prolonged.
Optionally, a main valve element O-shaped ring is sleeved on a circumferential surface of one end, close to the main valve element return spring, of the main valve element of the pressure reducer, and the outer wall of the main valve element O-shaped ring is abutted to the inner wall of the valve body.
Main valve element O type circle is established through the cover on the circumference face at pressure reducer main valve element, makes the outer wall of main valve element O type circle link to each other with the inner wall butt of valve body, and main valve element O type circle is strengthened being connected between pressure reducer main valve element and the valve body, improves the closeness of connection between main valve element O type circle and the valve body, strengthens the stable effect of pressure reducer main valve element in the use.
Optionally, the pressure reducer command valve comprises a command valve cylinder cover, a command valve spring shell, a command valve adjusting assembly and a command valve adjusting assembly; a bolt is arranged on the cylinder cover of the command valve and penetrates through the cylinder cover of the command valve to be in threaded connection with the valve body; the command valve spring shell is arranged on one side of the command valve cylinder cover, which is far away from the valve body, and is in threaded connection with the command valve cylinder cover; the command valve adjusting assembly is detachably arranged in the command valve spring shell; command valve adjusting part demountable installation links to each other with command valve adjusting part butt in command valve cylinder cap inside.
By adopting the technical scheme, when the command path of the pressure reducer command valve works, high-pressure gas or liquid firstly passes through the communication hole on the piston and enters one side of the piston close to the pressure reducer command valve, so that the pressure of one side of the piston close to the pressure reducer command valve is stable, then passes through the air inlet hole on the pressure reducer command valve and is exhausted through the outlet of the pressure reducer command valve to form an exhaust path; the pilot valve adjusting assembly and the pilot valve adjusting assembly are used for feedback, the pretightening force of the pilot valve adjusting assembly is set in advance, and when the pressure is greater than the pretightening force, the piston, the main valve element assembly and the like move towards the direction close to the pressure reducer pilot valve, so that the opening degree of the main valve element assembly is reduced, the flow is reduced, and the pressure is reduced; when the pressure is smaller than the pretightening force, the piston and the main valve element assembly move towards the direction far away from the pressure reducer command valve, so that the opening degree of the main valve element assembly is increased, and the pressure is increased; therefore, the accuracy control of the pressure reducer commanding valve exhaust pressure is dynamically maintained.
Optionally, the command valve adjusting assembly comprises a command valve spring seat, a spring and a command valve adjusting screw plug which are coaxially arranged, and the command valve spring seat, the spring and the command valve adjusting screw plug are sequentially arranged from one end close to the command valve adjusting assembly to the direction far away from the command valve adjusting assembly; the commanding valve adjusting screw plug is arranged in a boss shape, the protruding part of the commanding valve adjusting screw plug is inserted into the spring, and the circumferential surface of the commanding valve adjusting screw plug is connected with the commanding valve spring shell through threads.
Through adopting above-mentioned technical scheme, the command valve spring holder is arranged in inside the command valve spring shell and is linked to each other with command valve adjusting part butt, command valve adjustment plug screw thread is installed in the exit end of command valve spring shell, the spring is arranged in between command valve spring holder and the command valve adjustment plug screw, the accessible is predetermine and is ordered the command valve adjustment plug screw and adjust the concertina force of spring in the inside position of command valve spring shell, command valve adjusting part accessible promotes the command valve spring holder and then changes the length of spring, and then realize the effect that the dynamic pressure of maintaining command valve pressure accuracy control.
Optionally, the command valve adjusting assembly includes a command valve piston, a command valve limiting disc, a command valve movable valve seat, a command valve movable valve, and a command valve spring; the commanding valve piston is arranged on one side, away from the spring, of the commanding valve spring seat, and the commanding valve piston is connected with the commanding valve spring seat in an abutting mode; the commanding valve limiting disc is clamped in the commanding valve spring shell, and the commanding valve limiting disc is arranged on one side, away from the commanding valve spring seat, of the commanding valve piston; the commanding valve movable valve penetrates through the commanding valve movable valve seat to be abutted against the commanding valve piston; the pilot valve spring is sleeved on the circumferential surface of one end, deviating from the pilot valve piston, of the pilot valve movable valve, and one end, close to the pilot valve cylinder cover, of the pilot valve spring is connected with the pilot valve cylinder cover in an abutting mode.
By adopting the technical scheme, when the command valve adjusting assembly is used, high-pressure gas or liquid enters the position of a command valve spring of the command valve adjusting assembly from the air inlet hole, the high-pressure gas or liquid pushes the command valve spring to move towards the direction close to the outlet of a command valve spring shell, so that a command valve movable valve penetrating through a command valve movable valve seat pushes the command valve movable valve seat to move towards the direction close to a command valve spring seat, the command valve movable valve seat forms pressure on the command valve spring seat and transmits the pressure to the spring, the precision control of dynamically maintaining the exhaust pressure is realized through the deformation of the spring, and the use stability is high.
Optionally, a command valve safety valve sealing gasket is coaxially arranged inside the command valve piston, and one end of the command valve piston, which is close to the command valve piston, is inserted into the command valve safety valve sealing gasket to form a clamping connection.
By adopting the technical scheme, one end of the commanding valve movable valve close to the commanding valve piston is inserted into the commanding valve safety valve sealing gasket, so that on one hand, the contact area of the commanding valve movable valve and the commanding valve movable valve is increased, and the stability of the commanding valve movable valve in the using process is improved; on the other hand, the command valve safety valve sealing gasket is made of rubber, is soft in rubber texture, has a good protection effect on a command valve piston, and prolongs the service life.
Optionally, the air inlet is provided on the command valve cylinder cover.
By adopting the technical scheme, the air inlet hole is formed in the commanding valve cylinder cover, and the commanding valve cylinder cover is connected with the valve body through the screw, so that the stability is high, and the stability of high-pressure gas or liquid in the conveying process is ensured; meanwhile, high-pressure gas or liquid passes through the air inlet hole and then acts on the position of the command valve spring, so that the stable acting force of the high-pressure gas or liquid on the command valve spring is ensured, and the using effect is enhanced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by arranging the valve body and the pressure reducer command valve, the valve body and the pressure reducer command valve are mutually matched to improve the accurate control of the pressure at the outlet of the pressure reducer;
2. by arranging the main valve element assembly, the main valve element assembly performs flow equalization on the high-pressure gas or liquid flowing in, so that the self-adaptive adjustment of the pressure of the outlet nozzle is realized, and the use stability is improved;
3. through set up the sealed pad of command valve relief valve coaxially in command valve piston inside, the sealed pad increase of command valve relief valve and command valve loose valve's area of contact improves the guard action to command valve loose valve simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
FIG. 2 is a schematic cross-sectional structure of an embodiment of the present application;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
FIG. 4 is a schematic structural view of a valve cartridge seat of an embodiment of the present application;
FIG. 5 is an exploded view of a primary spool seal gland and primary spool seal of an embodiment of the present application;
FIG. 6 is a schematic cross-sectional view of a pressure reducer command valve according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an air inlet hole of a pressure reducer command valve, aiming at highlighting the pressure reducer command valve according to the embodiment of the application.
Description of reference numerals: 1. a valve body; 2. a main spool assembly; 21. a main spool return spring; 22. a main valve element of the pressure reducer; 221. a main spool O-ring; 23. a valve core seat; 231. connecting holes; 232. an exhaust gas flow equalizing hole; 233. an air inlet flow equalizing hole; 24. a main valve element sealing gasket; 241. a card slot; 25. a main valve core sealing gasket gland; 3. an inlet filler neck; 4. an outlet filler neck; 5. the pressure reducer commands the valve; 51. a command valve cylinder head; 511. a screw; 52. a command valve spring case; 53. a command valve adjustment assembly; 531. a command valve spring seat; 532. a spring; 533. commanding the valve to adjust the screw plug; 54. a command valve adjustment assembly; 541. a command valve piston; 542. a command valve limiting disc; 543. a pilot valve poppet; 544. a command valve live valve; 545. a command valve spring; 6. a piston; 61. a communicating hole; 7. an air inlet; 8. and a safety valve sealing gasket of the command valve.
Detailed Description
The present application is described in further detail below with reference to figures 1-7.
The embodiment of the application discloses commander formula pressure reducer.
With reference to fig. 1 and 2, a pilot-operated pressure reducer comprises a valve body 1, a main valve element assembly 2, an inlet nozzle 3, an outlet nozzle 4, a pressure reducer pilot valve 5 and a piston 6; the valve body 1 is a cavity shell with an opening at one end, the main valve element assembly 2 is detachably mounted inside the valve body 1, the piston 6 is arranged on one side, close to the opening of the valve body 1, of the main valve element assembly 2 and is connected with the valve body 1 in a sliding mode, and the pressure reducer commanding valve 5 is connected to the opening of the valve body 1 in a threaded mode; the inlet filler neck 3 and the outlet filler neck 4 are respectively arranged on two sides of the valve body 1 and are connected with the valve body 1 through threads.
Referring to fig. 2 and 3, main spool assembly 2 includes a main spool return spring 21, a pressure reducer main spool 22, a spool seat 23, a main spool seal 24, and a main spool seal gland 25; a connecting hole 231 is formed in one end, facing the pressure reducer command valve 5, of the valve core seat 23, an exhaust uniform flow hole 232 is formed in the circumferential surface of the valve core seat 23 close to the connecting hole 231, and an intake uniform flow hole 233 is formed in the circumferential surface of one end, far away from the connecting hole 231, of the valve core seat 23; the position of the piston 6 opposite to the connecting hole 231 is inserted into the connecting hole 231; one end of the valve core seat 23, which is far away from the pressure reducer command valve 5, is open, and the pressure reducer main valve core 22 is inserted from one open end of the valve core seat 23 and is spliced with the piston 6; main spool return spring 21 joint is in the one end that pressure reducer main spool 22 deviates from piston 6, and main spool return spring 21's the other end inserts and locates inside the casing of valve body 1 and form the joint.
With reference to fig. 2 and 4, when the commanded pressure reducer is used, high-pressure gas or liquid enters from the position of the inlet nozzle 3, the high-pressure gas or liquid in the main path passes through the inlet flow equalizing hole 233 of the valve core seat 23, and a plurality of inlet flow equalizing holes 233 can be provided, in this embodiment, 54 inlet flow equalizing holes 233 with phi 1 are preferably provided, and the inlet flow equalizing holes 233 are provided with 3 rows, so that the impact of inlet flow on the main valve core 22 of the pressure reducer is reduced, and the adaptability of the main valve core 22 of the pressure reducer is improved; then, high-pressure gas or liquid is discharged from the exhaust flow equalizing hole 232 of the valve element seat 23, a plurality of exhaust flow equalizing holes 232 can be arranged, in the embodiment, 6 exhaust flow equalizing holes 232 with phi 4 are preferably arranged to equalize exhaust flow, so that the flow field at the main valve element assembly 2 is as uniform as possible, and the phenomenon that the local pressure is too high or too low is avoided, thereby affecting the coaxiality of the main valve element assembly 2 and prolonging the service life of the main valve element 22 of the pressure reducer; when the outlet pressure is higher than the outlet pressure of the pressure reducer commanding valve 5, the piston 6 moves towards the direction close to the pressure reducer commanding valve 5, so that the opening degree of the main valve element assembly 2 is reduced, the flow is reduced, and the pressure is reduced; when the pressure of the outlet nozzle 4 is lower than the outlet pressure of the pressure reducer command valve 5, the piston 6 moves towards the direction far away from the pressure reducer command valve 5, the opening degree of the main valve element assembly 2 is increased, the flow is increased, the pressure of the outlet nozzle 4 is increased, and therefore the self-adaptive adjustment of the pressure of the outlet nozzle 4 is achieved.
Referring back to fig. 2, the piston 6 adopts a two-side pressure balance design, so that the pressure difference between two sides is reduced, the complexity of the sealing design of the piston 6 can be effectively reduced, the requirement on sealing is reduced, and meanwhile, the friction force of the piston 6 is reduced, so that the pressures on two sides of the piston 6 are as close as possible, and the accuracy of the outlet pressure of the command type pressure reducer can be further improved. The weight of piston 6 that can also maximize reduces, can reduce the processing complexity of piston 6 on the one hand, and the weight of on the other hand moving part reduces, is favorable to improving the dynamic characteristic of commander formula pressure reducer, and commander formula pressure reducer's response time is faster, adjusts more sensitively.
With reference to fig. 4 and 5, a clamping groove 241 is formed on the outer surface of the main valve element sealing gasket 24, the main valve element sealing gasket 24 is sleeved on the main valve element 22 of the pressure reducer and clamped with the main valve element 22 of the pressure reducer, a main valve element sealing gasket gland 25 is sleeved on the main valve element sealing gasket 24, and the main valve element sealing gasket gland 25 is covered with the clamping groove 241 of the main valve element sealing gasket 24 and then is connected with the main valve element 22 of the pressure reducer again through a thread; the main valve element sealing gasket 24 and the main valve element sealing gasket gland 25 are coated with bonding glue, the main valve element sealing gasket gland 25 and the pressure reducer main valve element 22 are coated with thread glue, and the bonding glue and the thread glue play a sealing role. Meanwhile, a 60-degree small groove is carved on the main valve element 22 of the pressure reducer, after the main valve element sealing gasket 24 is installed on the main valve element 22 of the pressure reducer, the sealing surface of the main valve element sealing gasket 24 is finished, and the multiple sealing structure design avoids the high pressure on one side, away from the opening of the valve body 1, of the main valve element sealing gasket 24 when the structure is contracted. Main valve core subassembly 2 adopts the mode that threaded connection and sticky combined together, adopts the end face seal's form, through appropriate material selection, can furthest improve commander formula pressure reducer's withstand voltage ability to improve commander formula pressure reducer's withstand voltage scope greatly.
With reference to fig. 2 and 3, a main spool O-shaped ring 221 is sleeved on a circumferential surface of one end of the main spool 22 of the pressure reducer, which is close to the main spool return spring 21, an outer wall of the main spool O-shaped ring 221 is connected with an inner wall of the valve body 1 in an abutting manner, the main spool O-shaped ring 221 reinforces connection between the main spool 22 of the pressure reducer and the valve body 1, connection tightness between the main spool O-shaped ring 221 and the valve body 1 is improved, and a stabilizing effect of the main spool 22 of the pressure reducer in a use process is enhanced; meanwhile, a main valve element 22 of the pressure reducer, a main valve element return spring 21, a main valve element sealing gasket 24, a main valve element sealing gasket gland 25 and a valve element seat 23 form a sealing pair of the command type pressure reducer, and the flow of the pressure reducer flowing through is self-adaptively regulated through the opening degree, so that the stability of the pressure at the outlet of the pressure reducer is controlled; a small vent hole is formed in main spool 22 of the pressure reducer, so that pressure on two sides of main spool assembly 2 is balanced, and outlet pressure accuracy of the command pressure reducer is improved.
With reference to fig. 6 and 7, the pressure reducer command valve 5 comprises a command valve cylinder head 51, a command valve spring shell 52, a command valve adjustment assembly 53 and a command valve adjustment assembly 54; an air inlet 7 is formed in the commanding valve cylinder cover 51, a screw 511 is arranged on the commanding valve cylinder cover 51, and the screw 511 penetrates through the commanding valve cylinder cover 51 to be in threaded connection with the valve body 1; the command valve spring shell 52 is arranged on one side of the command valve cylinder cover 51, which is far away from the valve body 1, and is in threaded connection with the command valve cylinder cover 51; the piston 6 has a communication hole 61 formed therein.
The commanding valve adjusting assembly 53 is detachably mounted inside the commanding valve spring shell 52, the commanding valve adjusting assembly 53 comprises a commanding valve spring seat 531, a spring 532 and a commanding valve adjusting screw plug 533 which are coaxially arranged, and the commanding valve spring seat 531, the spring 532 and the commanding valve adjusting screw plug 533 are sequentially arranged from one end close to the commanding valve adjusting assembly 54 to the direction far away from the commanding valve adjusting assembly 54; the pilot valve adjusting plug 533 is disposed in a boss shape, a protruding portion of the pilot valve adjusting plug 533 is inserted into the spring 532, and a circumferential surface of the pilot valve adjusting plug 533 is in threaded connection with the pilot valve spring housing 52.
The commanding valve adjusting assembly 54 is detachably mounted inside the commanding valve cylinder cover 51, and the commanding valve adjusting assembly 54 comprises a commanding valve piston 541, a commanding valve limiting disc 542, a commanding valve movable valve seat 543, a commanding valve movable valve 544 and a commanding valve spring 545; the pilot valve piston 541 is arranged on one side, away from the spring 532, of the pilot valve spring seat 531, and the pilot valve piston 541 is connected with the pilot valve spring seat 531 in an abutting mode; the commanding valve limiting disc 542 is clamped inside the commanding valve spring shell 52, and the commanding valve limiting disc 542 is arranged on one side, away from the commanding valve spring seat 531, of the commanding valve piston 541; a command valve safety valve sealing gasket 8 is coaxially arranged inside the command valve piston 541, and one end, close to the command valve piston 541, of the command valve movable valve 544 is inserted into the command valve safety valve sealing gasket 8 to form clamping connection; the commanding valve spring 545 is sleeved on the circumferential surface of one end of the commanding valve movable valve 544, which is far away from the commanding valve piston 541, and one end of the commanding valve spring 545, which is close to the commanding valve cylinder cover 51, is connected with the commanding valve cylinder cover 51 in an abutting mode.
When the command path of the pressure reducer command valve 5 works, high-pressure gas or liquid firstly passes through the communication hole 61 on the piston 6 and enters one side of the piston 6 close to the pressure reducer command valve 5, so that the pressure of one side of the piston 6 close to the pressure reducer command valve 5 is stable, then passes through the air inlet hole 7 on the pressure reducer command valve 5 and is exhausted through the outlet of the pressure reducer command valve 5 to form an exhaust path; the high-pressure gas or liquid pushes the commanding valve spring 545 to move towards the direction close to the outlet of the commanding valve spring shell 52, so that the commanding valve movable valve 544 penetrating through the commanding valve movable valve seat 543 pushes the commanding valve movable valve seat 543 to move towards the direction close to the commanding valve spring seat 531, the commanding valve movable valve seat 543 forms pressure on the commanding valve spring seat 531 and transmits the pressure to the spring 532, the precision control of dynamically maintaining the exhaust pressure is realized through the deformation of the spring 532, and the use stability is high; command valve spring holder 531 is arranged in command valve spring shell 52 inside and is linked to each other with command valve adjusting part 54 butt, command valve adjustment plug screw 533 threaded mounting is in the exit end of command valve spring shell 52, spring 532 is arranged in between command valve spring holder 531 and the command valve adjustment plug screw 533, the accessible is predetermine and is ordered command valve adjustment plug screw 533 and adjust the concertina force of spring 532 at the inside position of command valve spring shell 52, command valve adjusting part 54 accessible promotes command valve spring holder 531 and then changes the length of spring 532, and then the effect of the dynamic maintenance pressure reducer command valve 5 exhaust pressure accuracy control is realized. The pretightening force of the command valve adjusting assembly 53 is set in advance, and when the pressure is greater than the pretightening force, the piston 6, the main valve element assembly 2 and the like move towards the direction close to the pressure reducer command valve 5, so that the opening degree of the main valve element assembly 2 is reduced, the flow is reduced, and the pressure is reduced; when the pressure is smaller than the pretightening force, the piston 6 and the main valve element assembly 2 move towards the direction away from the pressure reducer command valve 5, so that the opening degree of the main valve element assembly 2 is increased, and the pressure is increased; therefore, the precision control of the pressure reducer commanding valve 5 is dynamically maintained.
Referring to fig. 2 and 7, the communicating hole 61 arranged on the piston 6 is matched with the air inlet hole 7 on the cylinder cover 51 of the command valve to regulate the pressure reducer command valve 5 to work in the optimal state, and the outlet pressure of the command type pressure reducer is stable; the shell of the command type pressure reducer is made of high-strength aluminum alloy materials, so that the weight of the pressure reducer can be effectively reduced, and the command type pressure reducer is more suitable for application scenes sensitive to weight, such as aerospace and the like. The valve body 1 of commander formula pressure reducer and pressure reducer commander valve 5 adopt same entry, same export, reduce interface quantity, reduce the complexity of system, through the size of the entry orifice, the export orifice that rationally set up pressure reducer commander valve 5, can be so that pressure reducer commander valve 5 work is in the optimum, under the condition that entry pressure changes, export pressure maintains stably.
The implementation principle of command type pressure reducer of the embodiment of the application is as follows: when the pressure of the outlet nozzle 4 is higher than the outlet pressure of the pressure reducer commanding valve 5, the piston 6 moves towards the direction close to the pressure reducer commanding valve 5, so that the opening degree of the main valve element assembly 2 is reduced, the flow is reduced, and the pressure is reduced; when the pressure of the outlet nozzle 4 is lower than the outlet pressure of the pressure reducer command valve 5, the piston 6 moves towards the direction far away from the pressure reducer command valve 5, the opening degree of the main valve element assembly 2 is increased, the flow is increased, the pressure of the outlet nozzle 4 is increased, and therefore the self-adaptive adjustment of the pressure of the outlet nozzle 4 is achieved; the command path enters the pressure reducer command valve 5 through the communication hole 61 and the air inlet hole 7, high-pressure gas or liquid enters one side of the piston 6 close to the pressure reducer command valve 5, so that the pressure of one side of the piston 6 close to the pressure reducer command valve 5 is stable, and the gas is discharged through an outlet of the pressure reducer command valve 5 to form a gas discharge path.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a commander formula pressure reducer, including valve body (1), main valve core subassembly (2), entry nozzle (3), export nozzle (4), pressure reducer commander valve (5) and piston (6), valve body (1) is the setting of one end open-ended cavity casing form, main valve core subassembly (2) demountable installation is inside valve body (1), entry nozzle (3), export nozzle (4) all with valve body (1) threaded connection, and entry nozzle (3), export nozzle (4) all with valve body (1) intercommunication setting, pressure reducer commander valve (5) are arranged in one side of valve body (1) open end and are continuous with the open position screw thread of valve body (1), piston (6) slide and set up inside valve body (1), and piston (6) are arranged in the centre of main valve core subassembly (2) and pressure reducer commander valve (5); the piston (6) is provided with a communicating hole (61), and the pressure reducer commanding valve (5) is provided with an air inlet hole (7).
2. A commanded pressure reducer according to claim 1, characterized in that: the main valve element assembly (2) comprises a main valve element return spring (21), a pressure reducer main valve element (22) and a valve element seat (23); a connecting hole (231) is formed in one end, opposite to the pressure reducer command valve (5), of the valve core seat (23), and the position, opposite to the connecting hole (231), of the piston (6) is inserted into the connecting hole (231); one end of the valve core seat (23) departing from the pressure reducer command valve (5) is open, and the pressure reducer main valve core (22) is inserted from the open end of the valve core seat (23) and is clamped with the piston (6); the main valve element return spring (21) is clamped at one end, deviating from the piston (6), of the pressure reducer main valve element (22), and the other end of the main valve element return spring (21) is inserted in the shell of the valve body (1) to form clamping.
3. A commanded pressure reducer according to claim 2, characterized in that: the main valve element assembly (2) further comprises a main valve element sealing gasket (24) and a main valve element sealing gasket gland (25); the outer surface of the main valve core sealing gasket (24) is provided with a clamping groove (241), and the main valve core sealing gasket (24) is sleeved on the main valve core (22) of the pressure reducer and clamped with the main valve core (22) of the pressure reducer; the main valve core sealing gasket gland (25) is sleeved on the main valve core sealing gasket (24), and the main valve core sealing gasket gland (25) is covered with the clamping groove (241) of the main valve core sealing gasket (24) and then is connected with the main valve core (22) of the pressure reducer through threads again.
4. A commanded pressure reducer according to claim 2, characterized in that: one end, close to the connecting hole (231), of the valve core seat (23) is provided with a plurality of exhaust gas uniform flow holes (232), and the exhaust gas uniform flow holes (232) are uniformly arranged at intervals along the circumferential surface of the valve core seat (23); the valve core seat (23) is far away from one end of the connecting hole (231) and is provided with a plurality of air inlet flow equalizing holes (233), and the plurality of air inlet flow equalizing holes (233) are arranged along the circumferential surface of the valve core seat (23) at uniform intervals.
5. A commanded pressure reducer according to claim 2, characterized in that: a main valve element O-shaped ring (221) is sleeved on the circumferential surface of one end, close to the main valve element return spring (21), of the main valve element (22) of the pressure reducer, and the outer wall of the main valve element O-shaped ring (221) is abutted to the inner wall of the valve body (1).
6. A commanded pressure reducer according to claim 1, characterized in that: the pressure reducer commanding valve (5) comprises a commanding valve cylinder cover (51), a commanding valve spring shell (52), a commanding valve adjusting assembly (53) and a commanding valve adjusting assembly (54); a bolt (511) is arranged on the commanding valve cylinder cover (51), and the bolt (511) penetrates through the commanding valve cylinder cover (51) to be in threaded connection with the valve body (1); the commanding valve spring shell (52) is arranged on one side of the commanding valve cylinder cover (51) departing from the valve body (1) and is in threaded connection with the commanding valve cylinder cover (51); the command valve adjusting assembly (53) is detachably arranged in the command valve spring shell (52); the commanding valve adjusting assembly (54) is detachably arranged in the commanding valve cylinder cover (51) and is connected with the commanding valve adjusting assembly (53) in an abutting mode.
7. A commanded pressure reducer according to claim 6, characterized in that: the command valve adjusting assembly (53) comprises a command valve spring seat (531), a spring (532) and a command valve adjusting screw plug (533) which are coaxially arranged, and the command valve spring seat (531), the spring (532) and the command valve adjusting screw plug (533) are sequentially arranged from one end close to the command valve adjusting assembly (54) to the direction far away from the command valve adjusting assembly (54); the commanding valve adjusting screw plug (533) is arranged in a boss shape, a protruding part of the commanding valve adjusting screw plug (533) is inserted into the spring (532), and the circumferential surface of the commanding valve adjusting screw plug (533) is in threaded connection with the commanding valve spring shell (52).
8. A commanded pressure reducer according to claim 7, characterized in that: the command valve adjusting assembly (54) comprises a command valve piston (541), a command valve limiting disc (542), a command valve movable valve seat (543), a command valve movable valve (544) and a command valve spring (545); the commanding valve piston (541) is arranged on one side, away from the spring (532), of the commanding valve spring seat (531), and the commanding valve piston (541) is connected with the commanding valve spring seat (531) in an abutting mode; the commanding valve limiting disc (542) is clamped in the commanding valve spring shell (52), and the commanding valve limiting disc (542) is arranged on one side, away from the commanding valve spring seat (531), of the commanding valve piston (541); the commanding valve movable valve (544) penetrates through the commanding valve movable valve seat (543) to be abutted against the commanding valve piston (541); the commanding valve spring (545) is sleeved on the circumferential surface of one end, deviating from the commanding valve piston (541), of the commanding valve movable valve (544), and one end, close to the commanding valve cylinder cover (51), of the commanding valve spring (545) is connected with the commanding valve cylinder cover (51) in an abutting mode.
9. A commanded pressure reducer according to claim 8, characterized in that: a command valve safety valve sealing gasket (8) is coaxially arranged inside the command valve piston (541), and one end, close to the command valve piston (541), of the command valve movable valve (544) is inserted into the command valve safety valve sealing gasket (8) to form clamping connection.
10. A commanded pressure reducer according to claim 6, characterized in that: the air inlet hole (7) is formed in a cylinder cover (51) of the command valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110548663.7A CN113137507A (en) | 2021-05-20 | 2021-05-20 | Command type pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110548663.7A CN113137507A (en) | 2021-05-20 | 2021-05-20 | Command type pressure reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113137507A true CN113137507A (en) | 2021-07-20 |
Family
ID=76817676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110548663.7A Pending CN113137507A (en) | 2021-05-20 | 2021-05-20 | Command type pressure reducer |
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| Country | Link |
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| CN (1) | CN113137507A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008065727A (en) * | 2006-09-11 | 2008-03-21 | Neriki:Kk | Pressure reducing valve |
| CN111043369A (en) * | 2019-11-26 | 2020-04-21 | 西安航天动力研究所 | Pressure reducing regulating valve with inlet variable flow limiting buffer |
| CN210830637U (en) * | 2019-11-11 | 2020-06-23 | 西安未来空天引擎科技有限公司 | Safety valve structure for piston type pressure reducer |
| CN211550662U (en) * | 2019-11-29 | 2020-09-22 | 天津航宇卓然科技有限公司 | Multifunctional combined valve capable of realizing high-precision pressure reduction |
| CN112576793A (en) * | 2020-12-11 | 2021-03-30 | 北京航空航天大学 | Valve combined structure with pressure reducer in front |
-
2021
- 2021-05-20 CN CN202110548663.7A patent/CN113137507A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008065727A (en) * | 2006-09-11 | 2008-03-21 | Neriki:Kk | Pressure reducing valve |
| CN210830637U (en) * | 2019-11-11 | 2020-06-23 | 西安未来空天引擎科技有限公司 | Safety valve structure for piston type pressure reducer |
| CN111043369A (en) * | 2019-11-26 | 2020-04-21 | 西安航天动力研究所 | Pressure reducing regulating valve with inlet variable flow limiting buffer |
| CN211550662U (en) * | 2019-11-29 | 2020-09-22 | 天津航宇卓然科技有限公司 | Multifunctional combined valve capable of realizing high-precision pressure reduction |
| CN112576793A (en) * | 2020-12-11 | 2021-03-30 | 北京航空航天大学 | Valve combined structure with pressure reducer in front |
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