CN203571146U - Gas pressure reducer - Google Patents
Gas pressure reducer Download PDFInfo
- Publication number
- CN203571146U CN203571146U CN201320763581.5U CN201320763581U CN203571146U CN 203571146 U CN203571146 U CN 203571146U CN 201320763581 U CN201320763581 U CN 201320763581U CN 203571146 U CN203571146 U CN 203571146U
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- Prior art keywords
- inlet valve
- air inlet
- pressure
- lever
- gas
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 abstract 4
- 238000000034 method Methods 0.000 description 4
- 210000000664 rectum Anatomy 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The utility model discloses a gas pressure reducer, relates to a pressure reducer and provides a gas pressure reducer with a small volume and large flow. The gas pressure reducer is provided with a pressure reducer body, a piston body, an upper spring, a regulating screw, an ejector rod, a low-pressure cavity, a low-pressure gas outlet, a lever, a fixed pin, a first gas inlet valve, a first lower spring, a second lower spring, a second gas inlet valve, a high-pressure cavity and a high-pressure gas inlet; the upper spring is arranged below the regulating screw; the piston body is arranged at the lower end of the upper spring; the regulating screw is used for regulating a spring force of the upper spring; the ejector rod is arranged below the piston body; the left end of the lever is arranged below the ejector rod; the right end of the lever is arranged on the fixed pin in a sleeving manner; the left end of the lever moves up and down by using the fixed pin as the circle center; the first gas inlet valve and the second gas inlet valve are arranged below the lever; the first gas inlet valve is higher than the second gas inlet valve; the first lower spring is arranged below the first gas inlet valve; the second lower spring is arranged below the second gas inlet valve; the high-pressure cavity is formed below the first gas inlet valve and the second gas inlet valve; and the high-pressure cavity is connected with the high-pressure gas inlet.
Description
Technical field
The utility model relates to a kind of decompressor, especially relates to a kind of gas pressure reducer.
Background technique
Gas pressure reducer is for reducing pressure the gas of gas cylinder and Flow-rate adjustment, and according to the working principle of gas pressure reducer, structural design and application places, gas pressure reducer can be divided into polytype.
Chinese patent CN102116411A discloses a kind of gas pressure reducer, comprises body, is connected to admission gear, the mechanism of decompressor, pressure gauge and air-out mechanism on body, is provided with the protective gear that prevents gas leakage in admission gear and air-out mechanism.The gas pressure reducer of this invention is connected with source of the gas, gas enters high pressure piston by high pressure piston filter, and there are multiple leakage protection devices, as high pressure nozzle leak-proof washer between high pressure nozzle and high pressure piston seat etc., while making gas pressure reducer decompression hyperpure gas or corrosive gas, do not worry the problem of leaking, use more safe and reliable.
The open a kind of large flow special gas decompressor of Chinese patent CN103075552A, is mainly comprised of decompressor valve body, body cap, spool, air film assembly, adjusting part, pressure regulation assembly, connection part, pressure gauge etc.This large flow special gas decompressor rotates by adjusting screw rod, change the pressure of Regulation spring, thereby drive the size of controlling mechanism opened gap, inlet pressure decompression is adjusted to required outlet pressure value, and the aperture of the feedback effect control spool by outlet pressure maintains the stable of outlet pressure.The motion of controlling mechanism is directly associated with outlet pressure, once outlet pressure changes, spool will move thereupon and realize the pressure stabilization function of decompressor.
Summary of the invention
A kind of gas pressure reducer that provides volume small flow large is provided the purpose of this utility model.
The utility model is provided with decompressor body, piston body, upper spring, adjusting screw, push rod, low-pressure cavity, low pressure air outlet, lever, fixing pin, the 1st air inlet valve, the 1st time bullet 11, the 2nd lower spring, the 2nd air inlet valve, hyperbaric chamber, high pressure admission mouth; Described upper spring is located under adjusting screw, and piston body is located at upper spring lower end, and adjusting screw is used for adjusting the spring force of upper spring; Push rod is contained under piston body, lever left end is located under push rod, the right-hand member of lever is enclosed within on fixing pin, the left end of lever moves up and down as the center of circle take fixing pin, and the 1st air inlet valve and the 2nd air inlet valve are located at lever below, and the 1st air inlet valve is higher than the 2nd air inlet valve, the 1st lower spring is housed under the 1st air inlet valve, the 2nd lower spring is housed under the 2nd air inlet valve, and hyperbaric chamber is located at the 1st air inlet valve and the 2nd air inlet valve below, and hyperbaric chamber connects high pressure admission mouth.
Described piston body can adopt elastic sheet.
When air inlet valve is opened, the gas of hyperbaric chamber can enter low-pressure cavity by air inlet valve, while closing, can not communicate, and first opens the 1st air inlet valve when lever presses down, then opens the 2nd air inlet valve.
Working principle of the present utility model is as follows: upper spring is being pressed the gas pressure of piston body balance low-pressure cavity, the output of low-pressure cavity gas, during pressure decreased, piston body moves down, and promotes push rod, lever, can back down successively each valve, due to the effect of lever, the power that piston body is less just can be backed down air inlet valve, and the pressure of low-pressure cavity is comparatively stable, and the delivery pressure of decompressor gas is also more stable; When the gas of hyperbaric chamber is higher, only back down the 1st air inlet valve that latus rectum is less, just can meet traffic requirement; When the gas of hyperbaric chamber is lower, spool latus rectum is little, the pressure drop of low-pressure cavity, piston body moves down, push rod backs down the 1st air inlet valve and the 2nd air inlet valve, and latus rectum is larger, and throttle resistance reduces, improved the little performance of decompressor suction pressure decline flow, can reduce the area of piston, therefore, when decompressor hyperbaric chamber pressure changes greatly, low-pressure cavity has more stable delivery pressure, can also accomplish that volume small flow is large; Use piston body instead flexible sheet, low-pressure cavity is used diaphragm structure instead also can reach this performance.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment's structure composition schematic diagram.
Embodiment
Referring to Fig. 1, the utility model embodiment is provided with decompressor body 1, piston body 2, upper spring 3, adjusting screw 4, push rod 5, low-pressure cavity 6, low pressure air outlet 7, lever 8, fixing pin 9, the 1st air inlet valve the 10, the 1st lower spring the 11, the 2nd lower spring the 12, the 2nd air inlet valve 13, hyperbaric chamber 14, high pressure admission mouth 15; Described upper spring 3 is located at adjusting screw 4 times, and piston body 2 is located at upper spring 3 lower ends, and adjusting screw 4 is used for adjusting the spring force of upper spring 3; Push rod 5 is contained in piston body 2 times, lever 8 left ends are located at push rod 5 times, the right-hand member of lever 8 is enclosed within on fixing pin 9, the left end of lever 8 moves up and down as the center of circle take fixing pin 9, the 1st air inlet valve 10 and the 2nd air inlet valve 13 are located at lever 8 belows, the 1st air inlet valve 10 is higher than the 2nd air inlet valve 13, the 1st air inlet valve 10 times is equipped with the 1st lower spring 11, the 2nd air inlet valve 13 times is equipped with the 2nd lower spring 12, hyperbaric chamber 14 is located at the 1st air inlet valve 10 and the 2nd air inlet valve 13 belows, and hyperbaric chamber 14 connects high pressure admission mouth 15.
Described piston body 2 adopts elastic sheet.
Below provide working procedure of the present utility model:
1, high pressure loading condition
When pressurized gas enter decompressor hyperbaric chamber, because low-pressure cavity is without gas pressure, the spring force of upper spring, moves down piston body and push rod, and the lever left side moves down, and valve is opened, and gas enters low-pressure cavity through valve hole; When the pressure of low-pressure cavity reaches higher than spring force, on piston body and push rod, move, lever moves on the left side, and the gas pressure of low-pressure cavity reaches and spring force balance, and valve is closed; When low-pressure cavity output gas, during pressure drop, the spring force of spring moves down piston body and push rod, and the lever left side moves down, and the 1st air inlet valve is opened, and gas enters low-pressure cavity through valve hole; When the pressure of low-pressure cavity reaches higher than spring force, on piston body and push rod, move, lever moves on the left side, and the gas pressure of low-pressure cavity reaches and spring force balance, and the 1st air inlet valve cuts out;
2, the lower operating mode of high-pressure
When entering the gas pressure of hyperbaric chamber when lower, if low-pressure cavity gas continues output, pressure drop, the spring force of upper spring moves down piston body and push rod, the lever left side moves down, the 1st air inlet valve is opened, and gas enters low-pressure cavity through valve hole, because hyperbaric chamber pressure is lower, gas pressure difference through the 1st air inlet valve is little, flow is little, and the pressure of low-pressure cavity continues to decline, and piston body and push rod continue to move down, the lever left side moves down, the 1st air inlet valve and the 2nd air inlet valve are opened simultaneously, and the flow of gas process is large, and the pressure of low-pressure cavity gos up; When the pressure of low-pressure cavity reaches higher than spring force, on piston body and push rod, move, lever moves on the left side, and the gas pressure of low-pressure cavity reaches and spring force balance, first closes the 2nd air inlet valve, then closes the 1st air inlet valve, or the 1st air inlet valve is not related to; Adopt the utility model can be at input output pressure reduction large or hour, all have more stable low tension outlet pressure; As adopting gas cylinder air feed, using process all has more stable delivery pressure, and the residual air of gas cylinder can be reduced, cost-saving.
Claims (2)
1. a gas pressure reducer, is characterized in that being provided with decompressor body, piston body, upper spring, adjusting screw, push rod, low-pressure cavity, low pressure air outlet, lever, fixing pin, the 1st air inlet valve, the 1st lower spring, the 2nd lower spring, the 2nd air inlet valve, hyperbaric chamber, high pressure admission mouth; Described upper spring is located under adjusting screw, and piston body is located at upper spring lower end, and adjusting screw is used for adjusting the spring force of upper spring; Push rod is contained under piston body, lever left end is located under push rod, the right-hand member of lever is enclosed within on fixing pin, the left end of lever moves up and down as the center of circle take fixing pin, and the 1st air inlet valve and the 2nd air inlet valve are located at lever below, and the 1st air inlet valve is higher than the 2nd air inlet valve, the 1st lower spring is housed under the 1st air inlet valve, the 2nd lower spring is housed under the 2nd air inlet valve, and hyperbaric chamber is located at the 1st air inlet valve and the 2nd air inlet valve below, and hyperbaric chamber connects high pressure admission mouth.
2. a kind of gas pressure reducer as claimed in claim 1, is characterized in that described piston body adopts elastic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763581.5U CN203571146U (en) | 2013-11-27 | 2013-11-27 | Gas pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763581.5U CN203571146U (en) | 2013-11-27 | 2013-11-27 | Gas pressure reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203571146U true CN203571146U (en) | 2014-04-30 |
Family
ID=50538878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320763581.5U Expired - Lifetime CN203571146U (en) | 2013-11-27 | 2013-11-27 | Gas pressure reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203571146U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889586A (en) * | 2016-06-17 | 2016-08-24 | 湖南科技学院 | Automatic constant pressure regulation device |
| CN107830216A (en) * | 2017-12-26 | 2018-03-23 | 胡振强 | Type voltage regulation gas safety valve |
| CN108223821A (en) * | 2017-12-14 | 2018-06-29 | 河南航天液压气动技术有限公司 | Pressure changeable direct-acting overflow valve |
| CN112081973A (en) * | 2020-09-30 | 2020-12-15 | 上海燃料电池汽车动力系统有限公司 | Lever type pressure reducing valve and regulating and controlling method thereof |
-
2013
- 2013-11-27 CN CN201320763581.5U patent/CN203571146U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889586A (en) * | 2016-06-17 | 2016-08-24 | 湖南科技学院 | Automatic constant pressure regulation device |
| CN108223821A (en) * | 2017-12-14 | 2018-06-29 | 河南航天液压气动技术有限公司 | Pressure changeable direct-acting overflow valve |
| CN108223821B (en) * | 2017-12-14 | 2019-11-08 | 河南航天液压气动技术有限公司 | Pressure changeable direct-acting overflow valve |
| CN107830216A (en) * | 2017-12-26 | 2018-03-23 | 胡振强 | Type voltage regulation gas safety valve |
| CN107830216B (en) * | 2017-12-26 | 2019-04-19 | 中山利特隆瓦斯器材有限公司 | Type voltage regulation gas safety valve |
| CN112081973A (en) * | 2020-09-30 | 2020-12-15 | 上海燃料电池汽车动力系统有限公司 | Lever type pressure reducing valve and regulating and controlling method thereof |
| CN112081973B (en) * | 2020-09-30 | 2022-06-17 | 上海燃料电池汽车动力系统有限公司 | Lever type pressure reducing valve and regulating and controlling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
|
| CX01 | Expiry of patent term |