CN2108834U - Reducing valve of medium-low pressure gas pipe - Google Patents
Reducing valve of medium-low pressure gas pipe Download PDFInfo
- Publication number
- CN2108834U CN2108834U CN 91208136 CN91208136U CN2108834U CN 2108834 U CN2108834 U CN 2108834U CN 91208136 CN91208136 CN 91208136 CN 91208136 U CN91208136 U CN 91208136U CN 2108834 U CN2108834 U CN 2108834U
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- Prior art keywords
- valve
- pressure reducing
- lever
- gas
- decompression
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Abstract
The utility model provides a pressure reducing valve for a gas pipeline with medium-low pressure, which is a civil pressure reducing valve for reducing pressure of pipeline gas of manufactured gas, natural gas, etc. The pressure reducing system of the pressure reducing valve is composed of a pressure reducing film, a lever and a pressure reducing spring, wherein, a covering cap at one end of the lever is pressed on an air inlet pipe spout, the other end of the lever is fixed on the pressure reducing film. And the top of the pressure reducing film is provided with the pressure reducing spring. In this way, with the elastic force action of the lever and the pressure reducing film, the pressure is reduced. In addition, the air inlet pipe mouth of a valve body is provided with a cut-off valve which can automatically cut off gas path when the valve body or the back end of the valve body leaks out gas. The utility model has the advantages of advanced pressure reducing structure and convenient installation, and prevents leakage fault.
Description
The utility model has related to and a kind of pipeline gas such as artificial coal gas, natural gas having been reduced pressure, and the domestic gas reduction valve of control flow rate.
At present in pipeline gas, also do not have a kind of desirable in a low-pressure relief valve door, so press the scheme of after the pressure-reducing station decompression, importing subscriber household again in construction, still have to adopting.Building pressure-reducing station like this needs a large amount of pipelines and civil engineering area, so not only will consume steel and capital cost more, also will account for land area more.The problem of firepower deficiency can appear in the low pressure house lead in the gas peak time simultaneously, and can cause the metering of table tool inaccurate.
The purpose of this utility model is to provide a kind of can make the middle direct house lead in of pipeline gas of pressing, decompression before the table, and when the super flow of combustion gas, the automatic reduction valve that cuts off.
The utility model is made up of critical pieces such as valve body, valve gap, turnover gas passage, decompressors, decompressor is formed depressurized system by decompression film, lever, decompression spring, there is block to be pressed on the air inlet ozzle on one end of lever, the other end is fixedlyed connected with the decompression film, and the decompression spring of a roof pressure is arranged on the decompression film.When the suction pressure of air inlet ozzle backs down the block of lever, the other end of lever is subjected to the air pressure active force down, because the reaction force of decompression film up, and the block end down is pressed on the air inlet ozzle, to reach the decompression purpose.At the air inlet mouth of pipe of valve body a cut-off valve has been installed in addition, after the table tool behind valve body itself or the valve body, pipeline, kitchen range etc. leak, has just been cut off source of the gas automatically, tried to avert accidents.
Drawing of the present utility model is described as follows:
Fig. 1 is a plan view of the present utility model.
Fig. 2 is a structure sectional view of the present utility model.
Fig. 3 is lever and bar linkage structure figure.
Fig. 4 is the sectional view of cut-off valve.
Fig. 5 is the planimetric map of the utility model inlet end.
As shown in Figure 1 and Figure 2, decompressor of the present utility model mainly is made up of lever 7, decompression film 6, decompression spring 9, and a cut-off valve 5 is placed in the suction tude, be with in the left end mouth of pipe of cut-off valve 5 can cleaning for convenience detach filtering frame 4.Fig. 3 a is connecting rod 15 structures, and Fig. 3 b is lever 7 structural drawing, and a circular block is arranged on the end 14 of lever 7, and this block is pressed on the air inlet ozzle in the valve body 11.The other end 13 of lever 7 is microscler prong grooves 18, and prong groove 18 is inserted in the V-type bayonet socket 16 of connecting rod 15 bottoms and fixes.Screw thread 17 is arranged at connecting rod 15 tops, and screw thread 17 is enclosed within on the decompression film 6, compresses the back by nut and fixedlys connected with decompression film 6.Decompression film 6 is screwed on valve body, has a decompression spring 9 pressing above decompression film 6.The gas of pressing is like this washed the block end air inlet of lever 7 open from suction tude, and the other end of lever 7 just is subjected to downward pulling force, and this end is connected with decompression film 6 by connecting rod 15, so the tie point of the film 16 that reduces pressure is subjected to downward pulling force too.Decompression film 6 has a reaction force that makes progress under flexible effect, the block end of lever 7 produces a downward pressure, compresses the air inlet ozzle, therefore reaches the purpose of decompression.The structure of cut-off valve 5 has a seal ring 1 as shown in Figure 4 in the pipe, a side of seal ring 1 has a mobilizable valve pearl 2, and when valve body 11 or valve rear end generation leakage, front and back produce pressure reduction in the pipeline, and valve pearl 2 rushes to seal ring 1 at this moment, promptly cuts off gas circuit.Valve gap 10 is close-fittings with valve rod 12, then clicks valve gap 10 after fault is got rid of, and valve rod 12 is laid valve pearl 2 promptly downwards, and gas circuit is then logical, and catch spring 3 is to block valve pearl 2, does not allow it flow out in mouth.Filter screen 19 is installed on the filtering frame 4 among Fig. 5, and air filter forms an independently part like this, can for convenience detachly clean, and does not account for installation dimension again.The utility model has adopted air inlet/outlet to become 180 ° structure, and the various gas meter tools of so special adaptation are easy for installation.The flow of the utility model design is 3M
3/ h is 5 times of liquefied gas pressure regulator.
The utility model compared with prior art has the pressure reduction structure advanced person; Leakage failure cuts off source of the gas automatically, tries to avert accidents; The advantage such as easy for installation.
Claims (5)
1, in a kind of-low-pressure fuel gas pipeline reduction valve, comprise parts such as valve body 11, valve gap 10, turnover gas passage, decompressor, it is characterized in that decompressor is made of decompression film 6, lever 7, decompression spring 9, the block 14 of lever 7 one ends is pressed on the air inlet ozzle, the other end 13 is fixed on the decompression film 6, and a decompression spring 9 is arranged on the decompression film 6; The air inlet mouth of pipe at valve body 11 is equipped with a cut-off valve 5.
2, reduction valve according to claim 1 is characterized in that 14 ends of lever 7 have a prong groove 18, and groove 18 inserts in the bayonet socket 16 of connecting rod 15 bottoms, and the top screw thread of connecting rod 15 is pressed on the decompression film 6 by nut.
3, reduction valve according to claim 1 is characterized in that a seal ring P is arranged on cut-off valve 5 mouths of pipe, and its side is put a moving valve pearl 2, and there is a valve rod 12 valve pearl 2 tops.
4, reduction valve according to claim 1 is characterized in that being with a removable filter frame 4 in the suction tude road junction, and filter screen 19 is housed.
5, according to claim 1 or 2 or 3 or 4 described reduction valve, it is characterized in that air inlet/outlet becomes 180 ° structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91208136 CN2108834U (en) | 1991-05-10 | 1991-05-10 | Reducing valve of medium-low pressure gas pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91208136 CN2108834U (en) | 1991-05-10 | 1991-05-10 | Reducing valve of medium-low pressure gas pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2108834U true CN2108834U (en) | 1992-07-01 |
Family
ID=4917416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91208136 Granted CN2108834U (en) | 1991-05-10 | 1991-05-10 | Reducing valve of medium-low pressure gas pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2108834U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847941A (en) * | 2015-03-11 | 2015-08-19 | 北京控制工程研究所 | High-resistance non-metal membrane type pressure reducer |
| CN110873216A (en) * | 2018-09-03 | 2020-03-10 | 张宗熙 | Safety device for pressure regulator of liquefied petroleum gas device |
-
1991
- 1991-05-10 CN CN 91208136 patent/CN2108834U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847941A (en) * | 2015-03-11 | 2015-08-19 | 北京控制工程研究所 | High-resistance non-metal membrane type pressure reducer |
| CN110873216A (en) * | 2018-09-03 | 2020-03-10 | 张宗熙 | Safety device for pressure regulator of liquefied petroleum gas device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |