CN2874204Y - Gas pressure reducer - Google Patents
Gas pressure reducer Download PDFInfo
- Publication number
- CN2874204Y CN2874204Y CN 200520200893 CN200520200893U CN2874204Y CN 2874204 Y CN2874204 Y CN 2874204Y CN 200520200893 CN200520200893 CN 200520200893 CN 200520200893 U CN200520200893 U CN 200520200893U CN 2874204 Y CN2874204 Y CN 2874204Y
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- China
- Prior art keywords
- pressure
- gas
- outlet
- low
- valve body
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Abstract
The utility model discloses a gas pressure reduction device. The ratio between the area of section at an air outlet of low-pressure gas and the area of section at an air inlet of high-pressure gas equals or exceeds 200 times; a valve opening is set in between the high-pressure air inlet (1) and low-pressure air outlet; a valve rod that can close or open up the valve opening is set in the valve opening; a pressure balancing membrane fixed in the pressure reduction valve body is connected with the valve rod; a supporting plate is set in the balancing membrane; an outlet pressure adjusting bolt is set in the pressure reduction valve body; a force balancing spring is set in between the supporting plate and the outlet pressure adjusting bolt. This utility model, except for the merits of simple structure, small volume, convenient operation and adjustment and reliable working performance, has the advantages of safe application and convenient maintenance. Therefore, this utility model can be best applied to the fuel supply system for automobiles with natural gas fuel.
Description
Technical field:
The utility model relates to a kind of Gas pressure reducer that is used for air, oxygen, nitrogen or compressed natural gas (CNG) decompression, particularly a kind of Gas pressure reducer that is used for the fuel supply system of gas-fueled vehicles.
Background technique:
At present the Gas pressure reducer of China's compressed natural gas used as vehicle fuel (CNG) mode of mainly taking two-stage or three grades of decompressions is reduced to 0～0.4MPa with the rock gas of 20MPa pressure, these Gas pressure reducers exist mainly that volume is big, complex structure, flow is little, the low pressure gas outlet pressure is difficult to regulate control shortcoming, and are difficult to satisfy the usage requirement of 0.4～1.2Mpa.So existing Gas pressure reducer in use, and its using effect still is not ideal enough.
Summary of the invention:
The purpose of this utility model is: provide a kind of simple in structure, volume is less, the Gas pressure reducer of easy to operate, reliable working performance, to overcome the deficiencies in the prior art.
The utility model is achieved in that it comprises the reducing valve body (1) that is provided with pressurized gas import (2) and low-pressure gas outlet (3), the ratio of the discharge area of low-pressure gas outlet (3) and the import sectional area of pressurized gas import (2) is more than or equal to 200 times, between pressurized gas import (2) and low-pressure gas outlet (3), be provided with valve port (4), on valve port (4), be provided with the valve rod (5) that to close or to open valve port (4), be connected with a pressure balance diaphragm (6) that is installed on the reducing valve body (1) on the valve rod (5), on balance diaphragm (6), be provided with dunnage (7), on reducing valve body (1), be provided with outlet pressure adjusting screw (8), between dunnage (7) and outlet pressure adjusting screw (8), be provided with equilibrium of forces spring (9).
In reducing valve body (1) near the position of low-pressure gas outlet (3) be provided with can circulating hot water hot water cavity volume (10), and on reducing valve body (1), be provided with water intake and the water outlet that communicates with hot water cavity volume (10).
The safety valve (11) that communicates with low-pressure gas outlet (3) is installed on reducing valve body (1).
The import sectional area of pressurized gas import (2) is 0.15cm
2～0.22cm
2, the discharge area of low-pressure gas outlet (3) is more than or equal to 45cm
2
Valve rod (5) is connected with pressure balance diaphragm (6) by link block (12).
Pressure balance diaphragm (6) is high elastic rubber and the compound diaphragm of high strength traction-resistant fibre interlayer.
Owing to adopted technique scheme, the utility model is by the equilibrium of forces spring, pressure balance diaphragm and the dunnage on diaphragm, and structure by being associated with link block and valve rod, comprehensive utilization equilibrium of forces and under the same gas flow like this, circulation area is big more, the principle that gas pressure is low more, the utility model can just can be reduced pressure by the one-level decompression to be caused between 0.2～1.2MPa, and its flow is adjusted between 0～70Kg/h, but also can adjust arbitrarily between 0.2～1.2MPa outlet pressure by pressure regulating screw, the adjustment of its outlet pressure is very simple.Because gas is when very high pressure is reduced to very low pressure suddenly, can absorb a large amount of heats, if contain water in the gas, cause solidifying of water possibly in the outlet port, form " ice is stifled ", decompressor can not normally be used, therefore the utility model is designing the hot water cavity volume near the position of low-pressure gas outlet specially, promptly designing one " hot water territory " near the reduced pressure zone place, like this can be in the actual use of natural gas used for automobile depressurized system, heat the reduced pressure zone of decompressor dexterously with the cooling circulating water of motor, " ice the is stifled " problem that makes can solve well.In addition, decompressor of the present utility model is provided with safety valve, when decompressor breaks down, for example main valve is not closed completely, and outlet does not have flow (not use as post-decompression gas, be closed in the space of a fixed volume) time, the decompression pressure of outlet can constantly rise, up to rising to and the inlet pressure balance, if use in the vehicle CNG system this time, can damage motor, even the danger of blasting.Therefore, in the design of this decompressor, considered this problem, and designed a safety valve, the cracking pressure of this safety valve can be according to different usage requirements, the spring of design different rigidity coefficient.Like this, if the problems referred to above, safety valve can be opened to unload when outlet surpasses the safety pressure of design and put pressure, and sends sound, and is safe in utilization to guarantee to a certain extent.
Therefore, the utility model compared with prior art, that the utility model not only has is simple in structure, volume is less, operation is easy to adjust, the advantage of reliable working performance, is easy to advantage but also have safe in utilization, maintenance.The utility model is particularly suitable for being suitable in the fuel supply system of gas-fueled vehicles.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is equipped with the structural representation of safety valve for the utility model.
Embodiment:
Embodiment of the present utility model: the reducing valve body (1) that is provided with pressurized gas import (2) and low-pressure gas outlet (3) can adopt metal or plastic materials to make, during making, the ratio of the import sectional area of the discharge area of low-pressure gas outlet (3) and pressurized gas import (2) is made into more than or equal to 200 times, and preferably the import sectional area of pressurized gas import (2) being made into can be at 0.15cm
2～0.22cm
2Between adjustable, the discharge area of low-pressure gas outlet (3) is made into more than or equal to 45cm
2Between pressurized gas import (2) and low-pressure gas outlet (3), produce valve port (4) then, go up the valve rod (5) that can close or open valve port (4) of installation at valve port (4), connecting a last pressure balance diaphragm (6) that can be fixed on the reducing valve body (1) on the valve rod (5), and in the last dunnage (7) of installing of balance diaphragm (6), go up at reducing valve body (1) then an outlet pressure adjusting screw (8) is installed, an equilibrium of forces spring (9) is installed between dunnage (7) and outlet pressure adjusting screw (8); In order to make service behaviour more stable, preferably valve rod (5) is connected with pressure balance diaphragm (6) by a link block (12), and its pressure balance diaphragm (6) preferably adopts the material of selling on the market that is combined into high elastic rubber and high strength traction-resistant fibre interlayer to make diaphragm; For " ice the is stifled " phenomenon that prevents that the utility model from may occur when working, can in reducing valve body (1), make the hot water cavity volume (10) that to deposit the dress circulating hot water in the position near low-pressure gas outlet (3), and go up to make a water intake and the water outlet that energy communicates with hot water cavity volume (10) at reducing valve body (1), so in use just can be easily the engine cooling water pipe of automobile be connected with it; For more safe and reliable in use, can (11) at safety valve that communicates with low-pressure gas outlet (3) of the last installation of reducing valve body (1).
Claims (6)
1. Gas pressure reducer, it comprises the reducing valve body (1) that is provided with pressurized gas import (2) and low-pressure gas outlet (3), it is characterized in that: the ratio of the discharge area of low-pressure gas outlet (3) and the import sectional area of pressurized gas import (2) is more than or equal to 200 times, between pressurized gas import (2) and low-pressure gas outlet (3), be provided with valve port (4), on valve port (4), be provided with the valve rod (5) that to close or to open valve port (4), be connected with a pressure balance diaphragm (6) that is installed on the reducing valve body (1) on the valve rod (5), on balance diaphragm (6), be provided with dunnage (7), on reducing valve body (1), be provided with outlet pressure adjusting screw (8), between dunnage (7) and outlet pressure adjusting screw (8), be provided with equilibrium of forces spring (9).
2. Gas pressure reducer according to claim 1, it is characterized in that: in reducing valve body (1) near the position of low-pressure gas outlet (3) be provided with can circulating hot water hot water cavity volume (10), and on reducing valve body (1), be provided with water intake and the water outlet that communicates with hot water cavity volume (10).
3. Gas pressure reducer according to claim 1 is characterized in that: the safety valve (11) that communicates with low-pressure gas outlet (3) is installed on reducing valve body (1).
4. Gas pressure reducer according to claim 1 is characterized in that: the import sectional area of pressurized gas import (2) is 0.15cm2～0.22cm2, and the discharge area of low-pressure gas outlet (3) is more than or equal to 45cm2.
5. Gas pressure reducer according to claim 1 is characterized in that: valve rod (5) is connected with pressure balance diaphragm (6) by link block (12).
6. Gas pressure reducer according to claim 1 or 5, it is characterized in that: pressure balance diaphragm (6) is high elastic rubber and the compound diaphragm of high strength traction-resistant fibre interlayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520200893 CN2874204Y (en) | 2005-12-29 | 2005-12-29 | Gas pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520200893 CN2874204Y (en) | 2005-12-29 | 2005-12-29 | Gas pressure reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2874204Y true CN2874204Y (en) | 2007-02-28 |
Family
ID=37780802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520200893 Expired - Fee Related CN2874204Y (en) | 2005-12-29 | 2005-12-29 | Gas pressure reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2874204Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994324A (en) * | 2014-05-09 | 2014-08-20 | 宁波市成大机械研究所 | High-pressure gas barrel capable of automatically deflating underwater |
-
2005
- 2005-12-29 CN CN 200520200893 patent/CN2874204Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994324A (en) * | 2014-05-09 | 2014-08-20 | 宁波市成大机械研究所 | High-pressure gas barrel capable of automatically deflating underwater |
| CN103994324B (en) * | 2014-05-09 | 2016-04-06 | 宁波市成大机械研究所 | Can in water the high pressure air bucket of automatic deflation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070228 Termination date: 20121229 |