CN109595289B - Device for preventing high-pressure gas from impacting - Google Patents
Device for preventing high-pressure gas from impacting Download PDFInfo
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- CN109595289B CN109595289B CN201811640756.7A CN201811640756A CN109595289B CN 109595289 B CN109595289 B CN 109595289B CN 201811640756 A CN201811640756 A CN 201811640756A CN 109595289 B CN109595289 B CN 109595289B
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- 230000003116 impacting effect Effects 0.000 title abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 description 17
- 238000004880 explosion Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 206010011971 Decreased interest Diseases 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a device for preventing high-pressure gas from impacting, which comprises: the valve comprises a first shell, a second shell, a valve core and an elastic part. When high-pressure gas enters from the inlet end, the valve core is under the action of the high-pressure gas, the rear end of the valve core props against the front end of the hollow mounting part, the gas inlet of the hollow mounting part is communicated with the gas outlet of the valve core, the gas in the peripheral space of the hollow mounting part cannot enter the gas inlet of the hollow mounting part, and the high-pressure gas can only pass through the central hole of the valve core and reach the outlet through the central hole of the hollow mounting part. Meanwhile, the gas reaches the cavity where the elastic part is located through the first gas path gap, the second gas path gap and the first vent hole, when the acting force of the gas pressure and the acting force of the spring on the rear end of the valve core are larger than the acting force of the gas pressure on the front end of the valve core, the valve core moves towards the first shell and returns to the initial state, and at the moment, the gas pressure at the outlet end is the same as the gas pressure at the inlet end. The invention can realize slow pressure build-up of high-pressure gas from the inlet to the outlet and avoid the high-pressure gas from impacting a subsequent device.
Description
Technical Field
The invention belongs to the technical field of pneumatic equipment, and particularly relates to a device for preventing high-pressure gas from impacting.
Background
The pressurization system in the carrier rocket or the aircraft generally comprises a high-pressure gas cylinder, an electric explosion valve (or an electromagnetic valve), a pressure reducer, a throttle ring, a pipeline and the like, when the electric explosion valve or the electromagnetic valve is opened during working, high-pressure gas in the gas cylinder directly impacts the pressure reducer, the structure of the pressure reducer is easily damaged or a diaphragm is easily broken, and flight faults or loss of interest are caused.
In order to avoid direct impact of high-pressure gas on the pressure reducer, a container is generally added between the electric explosion valve (or the electromagnetic valve) and the pressure reducer or the length of a pressurization pipeline is increased in engineering application so as to buffer high-pressure impact caused after the electric explosion valve (or the electromagnetic valve) is opened. But adding a vessel or increasing the length of the pressurization piping increases the weight of the system. Therefore, a device capable of buffering the direct impact of the high-pressure gas on the pressure reducer is urgently needed.
Disclosure of Invention
The invention aims to provide a device for preventing high-pressure gas from impacting, which can control the pressure building speed of the high-pressure gas and prevent the high-pressure gas from directly impacting a pressure reducer.
In order to solve the problems, the technical scheme of the invention is as follows:
a high pressure gas impingement prevention apparatus, comprising: the valve comprises a first shell, a second shell, a valve core and an elastic part;
the front end of the first shell is an air inlet end, and the rear end of the second shell is an air outlet end;
the main body of the second shell is sleeved in the inner cavity of the first shell, a first air path gap is reserved between the front end of the main body of the second shell and the end surface of the inner cavity of the first shell, and the second shell is fixedly connected with the first shell;
a second air path gap is reserved between the front side wall of the main body of the second shell and the inner wall of the first shell, the second air path gap is communicated with the first air path gap, a plurality of first vent holes are formed in the peripheral side of the front side wall of the main body of the second shell, and the first vent holes are communicated with the second air path gap;
the valve core is arranged in the inner cavity of the main body of the second shell and provided with a vent hole, and the peripheral side of the valve core is attached to the wall of the inner cavity of the second shell;
the rear end of the main body inner cavity of the second shell extends towards the front end of the main body of the second shell to form a hollow installation part, the elastic part is arranged on the periphery of the hollow installation part, one end of the elastic part props against the rear end of the main body inner cavity of the second shell, the other end of the elastic part props against the rear end of the valve core, and a cavity where the elastic part is located is communicated with the first vent hole;
when the rear end of the valve core is abutted against the front end of the hollow mounting part, the air inlet of the hollow mounting part is communicated with the air outlet of the valve core, and air in the peripheral space of the hollow mounting part cannot enter the air inlet of the hollow mounting part;
in an initial state, the front end of the valve core props against the inner cavity end face of the first shell.
Preferably, a plurality of second vent holes are formed in the peripheral side of the end face of the inner cavity of the first shell, and the second vent holes are communicated with the first air passage gap.
Preferably, the rear end of the main body of the second housing is fixedly connected with the inner wall of the first housing through threads.
Preferably, a supporting table is arranged on the periphery of the rear end of the second housing, and the rear end face of the first housing is connected with the supporting table in a sealing manner.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
according to the invention, a first air passage gap is reserved between the front end of a main body of a second shell and the end surface of an inner cavity of a first shell, a second air passage gap is reserved between the side wall of the front part of the main body of the second shell and the inner wall of the first shell, and the second air passage gap is communicated with the first air passage gap; a first vent hole is formed in the side wall periphery of the front end of the second shell body, and the first vent hole is communicated with the second air path in a clearance mode; the cavity where the elastic part is located is communicated with the first vent hole.
The device described in the invention is in an initial state, the front end of the valve core props against the end face of the inner cavity of the first shell, the elastic part is arranged on the periphery of the hollow mounting part, one end of the elastic part props against the rear end of the inner cavity of the main body of the second shell, and the other end props against the rear end of the valve core, therefore, when high-pressure gas enters the device through the gas inlet end of the first shell, the front end of the valve core overcomes the acting force of the elastic part and presses against the front end of the hollow mounting part under the action of the high-pressure gas, at the moment, the high-pressure gas can only enter the outlet of the second shell through the central hole of the valve core and the central hole of the hollow mounting part, the high-pressure gas enters the first gas passage gap and the second gas passage gap through the gap between the front end of the valve core and the end face of the inner cavity of the first shell and then enters the cavity where the elastic part is located through After force is applied, the valve core moves towards the end surface of the inner cavity of the first shell until the rear end of the valve core is pressed on the end surface of the inner cavity of the first shell, namely the device is in an initial state, and at the moment, the pressure of gas at the outlet end of the second shell is the same as the pressure of gas at the inlet end of the first shell. In the above process, the outlet-end gas pressure of the second housing is slowly built up and is the same as the inlet-end pressure of the first housing after a certain period of time. The device is used between the electric explosion valve (or the electromagnetic valve) and the pressure reducer, the pressure of gas is built slowly before reaching the pressure reducer, and the direct impact of high-pressure gas on the pressure reducer is avoided, so that the working reliability of the pressure reducer is improved; meanwhile, the device is small in size and convenient to install in the middle of a pipeline or at the inlet of a pressure reducer, and compared with the mode of adding a container or increasing a pipeline, the device reduces the requirement on installation space of a system and reduces the weight of the system.
Drawings
FIG. 1 is a view showing the construction of the initial state of the present invention;
FIG. 2 is a block diagram of the high pressure gas just prior to entering the apparatus of the present invention.
Description of reference numerals: 1-a first housing; 2-a second housing; 3-a valve core; 4-an elastic portion; 5-a gasket; 6-first air passage gap; 7-a second gas path gap; 8-a first vent; 9-a hollow mounting portion; 10-a second vent; and 11, supporting the table.
Detailed Description
The high pressure gas impact preventing device according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
Referring to fig. 1 and 2, a high pressure gas impact preventing apparatus includes: a first shell 1, a second shell 2, a valve core 3 and an elastic part 4;
the front end of the first shell 1 is an air inlet end, and the rear end of the second shell 2 is an air outlet end;
the main body of the second shell 2 is sleeved in the inner cavity of the first shell 1, the front end of the main body of the second shell 2 and
a first air path gap 6 is reserved between the end faces of the inner cavity of the first shell 1, and the second shell 2 is fixedly connected with the first shell 1;
a second air path gap 7 is reserved between the front side wall of the main body of the second shell 2 and the inner wall of the first shell 1, the second air path gap 7 is communicated with the first air path gap 6, a plurality of first vent holes 8 are formed in the peripheral side of the front side wall of the main body of the second shell 2, and the first vent holes 8 are communicated with the second air path gap 7;
a valve core 3 is arranged in the inner cavity of the main body of the second shell 2, the peripheral side of the valve core 3 is attached to the inner cavity wall of the second shell 2, and the diameter A of a front end hole of a central hole of the valve core 3 is smaller than that of a rear end hole;
the rear end of the main body inner cavity of the second shell 2 extends towards the front end of the main body of the second shell 2 to form a hollow installation part 9, the elastic part 4 is arranged on the periphery of the hollow installation part 9, one end of the elastic part 4 props against the rear end of the main body inner cavity of the second shell 2, the other end of the elastic part 4 props against the rear end of the valve core 3, and a cavity where the elastic part 4 is located is communicated with the first vent hole 8;
in a state where the rear end of the valve element 3 abuts against the front end of the hollow mounting portion 9 (refer to fig. 2), the gas inlet of the hollow mounting portion 9 communicates with the gas outlet of the valve element 3, and gas in the peripheral side space of the hollow mounting portion 9 cannot enter the gas inlet of the hollow mounting portion 9;
in an initial state (refer to fig. 1), the front end of the spool 3 abuts against the inner cavity end surface of the first housing 1.
In this embodiment, a first air path gap 6 and a second air path gap 7 are designed between the first casing 1 and the second casing 2, the first air path gap 6 is communicated with the second air path gap 7, a first vent hole 8 is formed on the peripheral side of the front side wall of the subject of the second casing 2, the first vent hole 8 is communicated with the second air path gap 7, and a cavity where the elastic part 4 is located is communicated with the first vent hole 8.
The working process of the device is described with reference to fig. 1 and 2, the device described in this embodiment is in an initial state, that is, fig. 1, the front end of the valve core 3 abuts against the end surface of the inner cavity of the first housing 1, because the elastic part 4 is arranged on the periphery of the hollow mounting part 9, one end of the elastic part 4 abuts against the rear end of the inner cavity of the main body of the second housing 2, and the other end abuts against the rear end of the valve core 3, when high-pressure gas enters the device through the gas inlet end of the first housing 1, the front end of the valve core 3 overcomes the acting force of the elastic part 4 and presses against the front end of the hollow mounting part 9 under the action of the high-pressure gas, that is, the state shown in fig. 2, at this time, the high-pressure gas can only enter the outlet of the second housing 2 through the center hole of the valve core 3 and the gap between the front end surface of the inner cavity of the first, along with the increase of the cavity gas pressure of the elastic part 4 and the increase of the outlet pressure of the second shell 2, after the acting force of the cavity gas pressure of the elastic part 4 and the elasticity of the elastic part 4 applied to the rear end of the valve core are larger than the acting force of the gas pressure of the inlet end of the first shell 1 applied to the front end of the valve core, the valve core 3 moves towards the end surface of the inner cavity of the first shell 1 until the front end of the valve core 3 is tightly pressed on the end surface of the inner cavity of the first shell 1, namely the device is in an initial state, and at the moment, the outlet end gas pressure of the second. In the above process, the outlet-end gas pressure of the second casing 2 is slowly built up and is the same as the inlet-end pressure of the first casing 1 after a certain period of time.
The device is applied to a pressurization system in a carrier rocket or an aircraft, the device is used between an electric explosion valve (or an electromagnetic valve) and a pressure reducer, pressure is built slowly before high-pressure gas reaches the pressure reducer, direct impact of the high-pressure gas on the pressure reducer is avoided, and therefore the working reliability of the pressure reducer is improved; meanwhile, the device controls the diameter A value of the small hole at the front end of the valve core 3, the second air path gap 7 and the length, so that the gas pressure building time can be controlled, if the pressure building time at the outlet end of the second shell 2 is to be improved, the second air path gap 7 is properly lengthened, and the diameter A value of the small hole at the front end of the valve core 3 is changed; meanwhile, the device is small in size and convenient to install in the middle of a pipeline or at the inlet of a pressure reducer, and compared with the mode of adding a container or increasing a pipeline, the device reduces the requirement on installation space of a system and reduces the weight of the system. The device is not only suitable for a pressurization system in a carrier rocket or an aircraft, but also can be used in front of other devices for avoiding direct impact of high-pressure gas, and has strong universality.
Furthermore, a plurality of second vent holes 10 are formed in the peripheral side of the end face of the inner cavity of the first housing 1, and the second vent holes 10 are communicated with the first air passage gap 6. The second vent hole 10 communicated with the first air passage gap 6 is designed, so that when the gas pressure at the outlet end of the second shell 2 is the same as the gas pressure at the inlet end of the first shell 1, the gas can reach the outlet from the central hole of the valve core 3 through the central hole of the hollow mounting part 9, and can also reach the outlet through the second vent hole 10, the first air passage gap 6, the second air passage gap 7, the first vent hole 8, the cavity of the elastic part 4, the gap between the rear end of the valve core 3 and the front end of the hollow mounting part 9 and the central hole of the hollow mounting part 9.
Further, the rear end of the main body of the second shell 2 is fixedly connected with the inner wall of the first shell 1 through threads, and the disassembly is convenient.
Further, a support base 11 is provided on the rear end peripheral side of the second housing 2, and the rear end surface of the first housing 1 is hermetically connected to the support base 11, preferably, sealed with a gasket 5.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (4)
1. An apparatus for preventing high pressure gas from being impacted, comprising: the valve comprises a first shell, a second shell, a valve core and an elastic part;
the front end of the first shell is an air inlet end, and the rear end of the second shell is an air outlet end;
the main body of the second shell is sleeved in the inner cavity of the first shell, a first air path gap is reserved between the front end of the main body of the second shell and the end surface of the inner cavity of the first shell, and the second shell is fixedly connected with the first shell;
a second air path gap is reserved between the front side wall of the main body of the second shell and the inner wall of the first shell, the second air path gap is communicated with the first air path gap, a plurality of first vent holes are formed in the periphery of the front side wall of the main body of the second shell, and the first vent holes are communicated with the second air path gap;
the inner cavity of the main body of the second shell is provided with the valve core, the valve core is provided with a vent hole, and the peripheral side of the valve core is attached to the inner cavity wall of the second shell;
the rear end of the main body inner cavity of the second shell extends towards the front end of the main body of the second shell to form a hollow installation part, the elastic part is arranged on the periphery of the hollow installation part, one end of the elastic part props against the rear end of the main body inner cavity of the second shell, the other end of the elastic part props against the rear end of the valve core, and a cavity where the elastic part is located is communicated with the first vent hole;
when the rear end of the valve core is abutted against the front end of the hollow mounting part, the air inlet of the hollow mounting part is communicated with the air outlet of the valve core, and air in the peripheral space of the hollow mounting part cannot enter the air inlet of the hollow mounting part;
in an initial state, the front end of the valve core props against the inner cavity end face of the first shell.
2. The apparatus according to claim 1, wherein a plurality of second vent holes are formed in the periphery of the end surface of the inner chamber of the first casing, and the second vent holes communicate with the first gas passage gap.
3. The high pressure gas impact preventing apparatus as set forth in claim 1, wherein the rear end of the body of the second housing is screw-coupled to the inner wall of the first housing.
4. The high-pressure gas impact preventing device according to claim 1, wherein a support table is provided around a rear end of the second housing, and a rear end surface of the first housing is sealingly connected to the support table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640756.7A CN109595289B (en) | 2018-12-29 | 2018-12-29 | Device for preventing high-pressure gas from impacting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640756.7A CN109595289B (en) | 2018-12-29 | 2018-12-29 | Device for preventing high-pressure gas from impacting |
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| Publication Number | Publication Date |
|---|---|
| CN109595289A CN109595289A (en) | 2019-04-09 |
| CN109595289B true CN109595289B (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811640756.7A Active CN109595289B (en) | 2018-12-29 | 2018-12-29 | Device for preventing high-pressure gas from impacting |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320203A (en) * | 1990-01-16 | 1994-06-14 | Automotive Products Plc | Damper for hydraulic clutch actuator |
| US7591282B1 (en) * | 2006-09-26 | 2009-09-22 | Kermit L. Achterman & Associates, Inc. | Damped, self-cleaning flow shutoff valve and associated methods |
| CN206802424U (en) * | 2017-05-11 | 2017-12-26 | 嵊州市格伦电子机械科技有限公司 | A kind of decompressor of anti-leakage of compressed gas |
| CN107636337A (en) * | 2015-06-05 | 2018-01-26 | 舍弗勒技术股份两合公司 | Damping element for a hydraulic line |
| CN207921425U (en) * | 2017-11-30 | 2018-09-28 | 徐州青枣阀门科技有限公司 | A kind of pressure reducing valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CO6340185A1 (en) * | 2010-05-24 | 2011-11-21 | Gutierrez Ismael Hernan Riano | AUTOMATIC FLOW ECONOMIZER REGULATOR, OF A LIQUID FLUID |
-
2018
- 2018-12-29 CN CN201811640756.7A patent/CN109595289B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320203A (en) * | 1990-01-16 | 1994-06-14 | Automotive Products Plc | Damper for hydraulic clutch actuator |
| US7591282B1 (en) * | 2006-09-26 | 2009-09-22 | Kermit L. Achterman & Associates, Inc. | Damped, self-cleaning flow shutoff valve and associated methods |
| CN107636337A (en) * | 2015-06-05 | 2018-01-26 | 舍弗勒技术股份两合公司 | Damping element for a hydraulic line |
| CN206802424U (en) * | 2017-05-11 | 2017-12-26 | 嵊州市格伦电子机械科技有限公司 | A kind of decompressor of anti-leakage of compressed gas |
| CN207921425U (en) * | 2017-11-30 | 2018-09-28 | 徐州青枣阀门科技有限公司 | A kind of pressure reducing valve |
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| CN109595289A (en) | 2019-04-09 |
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