CN2302540Y - Reynolds pressure regulator with overpressure automatic protection function - Google Patents
Reynolds pressure regulator with overpressure automatic protection function Download PDFInfo
- Publication number
- CN2302540Y CN2302540Y CN 97241069 CN97241069U CN2302540Y CN 2302540 Y CN2302540 Y CN 2302540Y CN 97241069 CN97241069 CN 97241069 CN 97241069 U CN97241069 U CN 97241069U CN 2302540 Y CN2302540 Y CN 2302540Y
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- China
- Prior art keywords
- voltage regulator
- pressure
- pressure regulator
- outlet
- regulator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a Reynolds pressure regulator with overpressure automatic protection function which is mainly used for solving the defect that the command system of the existing Reynolds pressure regulator is easy to block and cause gas 'straight through'. The Reynolds pressure regulator is composed of a main pressure regulator, a middle assistant pressure regulator, a low assistant pressure regulator, a pressurizer and a needle-shaped valve. A one-way regulating valve and a corresponding medium pipe are additionally arranged between the outlet of the main pressure regulator and the inlet of the pressurizer so that the inlet and the outlet can be connected. The one-way regulating valve can make the middle pressure automatically self-compensate and raise when middle pressure is much low and causes the pressure of the outlet to abnormally raise. Thus the pressure regulator is turned down, the pressure of the outlet is ensured to be normal and air supply is safe.
Description
The utility model relates to the coal gas regulator in the gas distribution pipe network, is meant a kind of Reynolds formula pressure regulator with superpressure automatic protection functions especially.
At present the gas distribution pipe network in the most of area of China be in, the low pressure secondary network, adopt Reynolds formula pressure regulator that coal gas is carried out pressure regulation.Because Reynolds formula pressure regulator is the indirect type working method, mainly by main voltage regulator, in, parts such as low pressure auxiliary voltage regulator, needle valve, pressurizer form, in case its command system break down, as: assist valve port during the various impurity of coal gas stop up; Low auxilliary being not closed completely; In, low auxilliary rupture of diaphragm; And fault such as needle valve is malfunctioning, to cause the pressure regulator intermediate pressure to cross low and cause the gas exit pressure anomaly to raise, form coal gas and " run and lead directly to " phenomenon, cause the operation of low-pressure pipe network superpressure, the generation of accidents such as case coal gas diffusion pollution of standing, and may cause even more serious consequences such as personal poisoning, gas explosion, fire.
The purpose of this utility model will provide a kind of exactly can prevent superpressure automatically, guarantees that top hole pressure is normal, the Reynolds formula pressure regulator of air feed safety.
For reaching this purpose, the technical solution adopted in the utility model is to set up a covering device between the outlet of existing Reynolds formula pressure regulator and pressurizer, when middle hypotony causes the pressure regulator top hole pressure to raise unusually, by this device middle pressure is compensated, turn down pressure regulator thereby intermediate pressure is raise rapidly.The Reynolds formula pressure regulator with superpressure automatic protection functions designed according to above-mentioned principle of work mainly is made up of main voltage regulator, middle pressure auxiliary voltage regulator, low pressure auxiliary voltage regulator, pressurizer and needle valve.The import of middle pressure auxiliary voltage regulator is connected with the induction pipe of main voltage regulator, in press auxiliary voltage regulator outlet be connected with the import of low pressure auxiliary voltage regulator and the import of pressurizer after by a needle valve, the outlet of low pressure auxiliary voltage regulator is connected with the outlet of main voltage regulator, and pressurizer is by the valve spool of leverage control main voltage regulator.Its special character is that the outlet of main voltage regulator also is connected with the import of pressurizer by a unidirectional variable valve and corresponding medium pipeline.
Advantage of the present utility model is: be installed at the unidirectional variable valve between main voltage regulator outlet and the pressurizer import, can break down when causing that intermediate pressure is low excessively to cause top hole pressure to raise unusually at the pressure regulator command system, automatically unlatching compensates rapidly middle pressure, and automatic the adjusting makes the normal also maintenance of superpressure recovery stable.Thereby avoided coal gas " to run and lead directly to " phenomenon effectively, eliminated the destruction of low-pressure pipe network superpressure operation to facilities such as pipe network and indoor gas meter, stopcock, kitchen range and water heaters, and the hidden danger such as fire, blast, poisoning, personal injury that produced of gas leakage, the coal gas diffusion of voltage regulating station, case Safety water seal had been stopped the contamination hazard to surrounding enviroment substantially when may command " was run straight-through " simultaneously.
Below in conjunction with accompanying drawing structure of the present utility model is described in further detail.
Accompanying drawing is a kind of structural representation with Reynolds formula pressure regulator of superpressure automatic protection functions.
Import of its main voltage regulator 1 shown in the figure and outlet are connected with main voltage regulator induction pipe 11 and main voltage regulator outlet 12 respectively.The import of middle pressure auxiliary voltage regulator 2 is connected with main voltage regulator induction pipe 11 by stop valve 13, the outlet of middle pressure auxiliary voltage regulator 2 is connected with the import of low pressure auxiliary voltage regulator 3 and the import of pressurizer 4 by a needle valve 5 and intermediate pressure pipe 9, and the outlet of low pressure auxiliary voltage regulator 3 is connected with main voltage regulator outlet 12 by stop valve 15.The film of pressurizer 4 links to each other with the valve spool of main voltage regulator 1 by leverage 10 (lever and counterweight), opens greatly or turns down to control its valve.The film cavity of resorption of main voltage regulator 1 also is connected with main voltage regulator outlet 12 by stop valve 14, to play fine setting pressure.Main voltage regulator outlet 12 also is connected with intermediate pressure pipe 9 by a stop valve 6 and a unidirectional variable valve 7 and corresponding medium pipeline 8, that is is connected with the import of pressurizer 4.Above-mentioned stop valve 6,13,14,15 all can adopt ball valve, the main usefulness of doing maintenance, blinding off a line when safeguarding pressure regulator.Above-mentioned unidirectional variable valve 7 be adjustable single to qigong valve, the design of its opening pressure is lower than the top pressure 10% of main voltage regulator outlet 12.The internal diameter of stop valve 6, unidirectional variable valve 7 and medium pipeline 8 all should will substantially exceed the area of needle valve eyelet like this more than or equal to 20mm, and the impurity in the coal gas can not be blocked in wherein, guarantee the superpressure reliability of protection automatically.
During the utility model operate as normal, total system is balance air feed state, and this moment, unidirectional variable valve 7 was in closed condition.When the pressure regulator command system broke down, the pressure anomaly in the intermediate pressure pipe 9 reduced, and caused the film of pressurizer 4 to descend, and the valve of main voltage regulator 1 aperture under the effect of leverage 10 increases, and causes top hole pressure to raise unusually.When top hole pressure is higher than the opening pressure of unidirectional variable valve 7, unidirectional variable valve 7 enters duty, coal gas flows to the film cavity of resorption of pressurizer 4 by medium pipeline 8 from pressure regulator outlet 12, middle pressure is compensated automatically, it is up that thereby film drives leverage 10, the valve of control main voltage regulator 1 turns down, and reaches the purpose that reduces top hole pressure.Reduce to the starting pressure of unidirectional variable valve 7 when following when top hole pressure, unidirectional variable valve 7 cuts out automatically.At this moment, main voltage regulator 1 can return to the state that balances each other with the air feed load, and top hole pressure can be stabilized within the normal range.
Claims (2)
1; a kind of Reynolds formula pressure regulator with superpressure automatic protection functions; mainly by main voltage regulator; the middle auxiliary voltage regulator of pressing; the low pressure auxiliary voltage regulator; pressurizer and needle valve are formed; the import of middle pressure auxiliary voltage regulator is connected with the induction pipe of main voltage regulator; in press auxiliary voltage regulator outlet be connected with the import of low pressure auxiliary voltage regulator and the import of pressurizer after by a needle valve; the outlet of low pressure auxiliary voltage regulator is connected with the outlet of main voltage regulator; pressurizer is by the valve opening and closing of leverage control main voltage regulator, and it is characterized in that: the outlet of main voltage regulator also is connected with the import of pressurizer by a unidirectional variable valve and corresponding medium pipeline.
2, the Reynolds formula pressure regulator with superpressure automatic protection functions according to claim 1, it is characterized in that: the internal diameter of said unidirectional variable valve and corresponding medium pipeline is more than or equal to 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97241069 CN2302540Y (en) | 1997-07-18 | 1997-07-18 | Reynolds pressure regulator with overpressure automatic protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97241069 CN2302540Y (en) | 1997-07-18 | 1997-07-18 | Reynolds pressure regulator with overpressure automatic protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2302540Y true CN2302540Y (en) | 1998-12-30 |
Family
ID=33950636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97241069 Expired - Fee Related CN2302540Y (en) | 1997-07-18 | 1997-07-18 | Reynolds pressure regulator with overpressure automatic protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2302540Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460724A (en) * | 2014-11-28 | 2015-03-25 | 重庆市明皓光学仪器有限公司 | Fluid pressure regulator |
-
1997
- 1997-07-18 CN CN 97241069 patent/CN2302540Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460724A (en) * | 2014-11-28 | 2015-03-25 | 重庆市明皓光学仪器有限公司 | Fluid pressure regulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |