CN202510793U - Constant pressure valve for preventing natural gas hydrates from being generated - Google Patents
Constant pressure valve for preventing natural gas hydrates from being generated Download PDFInfo
- Publication number
- CN202510793U CN202510793U CN2012201382279U CN201220138227U CN202510793U CN 202510793 U CN202510793 U CN 202510793U CN 2012201382279 U CN2012201382279 U CN 2012201382279U CN 201220138227 U CN201220138227 U CN 201220138227U CN 202510793 U CN202510793 U CN 202510793U
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- valve
- valve body
- constant pressure
- ball
- pressure valve
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Abstract
The utility model relates to a constant pressure valve for preventing natural gas hydrates from being generated during a natural gas gathering and transportation process. The constant pressure valve aims to solve the problem that an original constant pressure valve is frozen and blocked due to the generation of the hydrates when throttling pressure reduction is performed. The technical scheme disclosed by the utility model is that an upper end cover and a lower end cover of the constant pressure valve are respectively arranged above and below a valve body; a guide valve is arranged on the upper end cover; the delivery inlet and the delivery outlet of the valve body are mutually connected with the guide valve through conduits; a cylinder sleeve and a guide cylinder are arranged in the valve body; a body core is provided with a spring and a piston; the piston does relative slip in the cylinder sleeve; an injection device is in threaded connection with the delivery inlet of the valve body; and the injection device consists of a cutting ferrule, a nut, a ball valve body, a ball valve seat, a sphere, an adapter tube head, a reflection cone and a nozzle. According to the constant pressure valve, the phenomenon that the valve is frozen and blocked can be effectively avoided, and natural gas can be prevented from being poured into the injection device. The constant pressure valve is convenient in installation, strong in operability and high in differential pressure regulation accuracy and is used for oil-gas well gathering and transportation pipelines.
Description
Technical field
The utility model relates to a kind of pressure fixing valve that gas hydrates generate that prevents that is used for the gas gathering and transportation process.
Background technique
Rock gas is being sent into the process of metering station from the oil gas well; Because the instability of gas well mouth pressure, the interior frictional resistance of pipe etc.; Can make discharge pressure produce fluctuation,, just need to add pressure fixing valve in order to control the gas pressure of importing metering station and to make it be in steady state.Its working principle all is through changing orifice size, the kinetic energy of flow velocity and fluid is changed, causing the different pressure losses, and pressure is reduced.Yet when pressure fixing valve is inserted natural gas line, in orifice size change place, can be because its local resistance increase, hydrodynamic pressure diminishes, and temperature is reduced, and reaches the initial conditions that gas hydrates produce, and the hydrate that produces will hinder the circulation of pipeline.
Summary of the invention
The purpose of the utility model: in order to stablize the pressure on the natural gas transportation pipeline, freeze a stifled difficult problem because of the generation of hydrate when solving former pressure fixing valve throttling step-down, the spy provides a kind of pressure fixing valve that prevents that gas hydrates from generating.
For achieving the above object, the technological scheme that the utility model adopts is: a kind of pressure fixing valve that prevents that gas hydrates from generating, form by pilot valve, conduit, upper end cap, cylinder sleeve, piston, spring, valve body, guide cylinder, main core, lower end cap, injecting device.It is characterized in that: the upper end cap of pressure fixing valve is installed in the valve body top, and lower end cap is installed in the valve body below, and pilot valve is installed on the upper end cap; The inlet opening of valve body is connected with pilot valve with conduit with delivery outlet, and cylinder sleeve and guide cylinder are installed in the valve body; Spring and piston are installed on the main core, and piston is slide relative in cylinder sleeve; The injecting device is threaded with the inlet opening of valve body.The injecting device is made up of cutting ferrule, nut, ball valve body, ball seat, spheroid, connector, refraction awl, nozzle; The upper inside wall of ball valve body is equipped with cutting ferrule, and the external wall of upper portion of ball valve body is connected with nut thread, and cutting ferrule contacts with the nut conical surface; The ball valve body set inside has ball seat, and spheroid is installed in the ball seat; The bottom of ball valve body is equipped with connector, and the bottom of connector is provided with refraction awl and nozzle.Main core middle part is made and is angled 8 °～15 ° main core awl, forms the conical flow space between main core awl and the restriction.
The utlity model has following beneficial effect: antifreezing solution is injected in (1) in the injecting device; Antifreezing solution through nozzle atomization after with pipeline in rock gas fully mix; Reduce the possibility that generates hydrate during the throttling pressure modulating opening through pressure fixing valve once more, can effectively avoid valve to freeze stifled phenomenon; (2) when gas pressure in the pipeline increases suddenly and be higher than the antifreezing solution injection pressure, can close injecting device ball valve valve, prevent that rock gas from pouring the injecting device into; (3) the cutting ferrule joint on the injecting device ball valve then can be realized the rapid abutting joint with the injecting pipe, and is easy for installation, workable; (4) main spool spring is installed between piston and the guide sleeve, greatly reduces the touch opportunity of spring and gas, can effectively reduce the rate of corrosion of main spool spring, guarantees the accuracy that pressure reduction is regulated.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the utility model pressure fixing valve.
Fig. 2 is the cutaway view Amplified image of injecting device in the pressure fixing valve.
Among the figure, 1. pilot valve, 2. conduit, 3. upper end cap, 4. cylinder sleeve, 5. piston; 6. spring, 7. valve body, 8. delivery outlet, 9. guide cylinder, 10. main core, 11. restrictions; 12. main core awl, 13. lower end caps, 14. inlet openings, 15. injecting devices, 16. cutting ferrules, 17. nuts; 18. ball valve body, 19. ball seats, 20. spheroids, 21. connector, 22. refraction awls, 23. nozzles.
Embodiment
According to Fig. 1, shown in Figure 2, pressure fixing valve mainly is made up of pilot valve 1, conduit 2, upper end cap 3, cylinder sleeve 4, piston 5, spring 6, valve body 7, guide cylinder 9, main core 10, lower end cap 13, injecting device 15.The upper end cap 3 that it is characterized in that pressure fixing valve is installed in valve body 7 tops; Lower end cap 13 is installed in the below of valve body 7; Pilot valve 1 is installed on the upper end cap 3, and the inlet opening 14 of valve body 7 is connected with pilot valve 1 with delivery outlet 8 usefulness conduits 2, and cylinder sleeve 4 and guide cylinder 9 are installed in the valve body 7; Spring 6 and piston 5 are installed on the main core 10, and piston 5 is slide relative in cylinder sleeve 4.Injecting device 15 is threaded with the inlet opening 14 of valve body 7.Injecting device 15 is made up of cutting ferrule 16, nut 17, ball valve body 18, ball seat 19, spheroid 20, connector 21, refraction awl 22, nozzle 23.The upper inside wall of ball valve body 18 is equipped with cutting ferrule 16, and its outer wall is threaded with nut 17, and cutting ferrule 16 contacts with nut 17 conical surfaces.Ball valve body 18 set inside have ball seat 19, and spheroid 20 is installed in the ball seat 19.The bottom of ball valve body 18 is equipped with connector 21, and the bottom of connector 21 is provided with refraction awl 22 and nozzle 23.
In the real work, close the spheroid 20 of injecting device 15, the injecting pipe is inserted on the cutting ferrule 16, screw nut 17, accomplish the installation of injecting pipe; Open spheroid 20, antifreezing solution injects through injecting device 15, through vertically spraying to refraction awl 22 behind the nozzle 23; In this process; Medicament is smashed straticulation along ejaculation all around, and forms fine drop, mixes with the rock gas of inlet opening 14; Mixed natural gas flow, is accomplished the level pressure of rock gas is regulated after delivery outlet 8 is exported through restriction 11 pressure regulation.Inlet opening 14 flows into pilot valves 1 with delivery outlet 8 interior rock gases through conduit 2, and pilot valve 1 promotes piston 5 and drive main core 10 to slide up and down through pressure reduction, regulates the aperture of restriction 11, and realization is to the level pressure output of rock gas.
Claims (3)
1. a pressure fixing valve that prevents that gas hydrates from generating is made up of pilot valve (1), conduit (2), upper end cap (3), cylinder sleeve (4), piston (5), spring (6), valve body (7), guide cylinder (9), main core (10), lower end cap (13), injecting device (15); It is characterized in that: the upper end cap of pressure fixing valve (3) is installed in the top of valve body (7), and lower end cap (13) is installed in the below of valve body (7), and pilot valve (1) is installed on the upper end cap (3); The inlet opening (14) of valve body (7) is connected with pilot valve (1) with conduit (2) with delivery outlet (8), and cylinder sleeve (4) and guide cylinder (9) are installed in the valve body (7); Spring (6) and piston (5) are installed on the main core (10), and piston (5) is slide relative in cylinder sleeve (4); Injecting device (15) is threaded with the inlet opening (14) of valve body (7).
2. pressure fixing valve according to claim 1 is characterized in that: said injecting device (15) is made up of cutting ferrule (16), nut (17), ball valve body (18), ball seat (19), spheroid (20), connector (21), refraction awl (22), nozzle (23); The upper inside wall of ball valve body (18) is equipped with cutting ferrule (16), and the external wall of upper portion of ball valve body (18) is threaded with nut (17), and cutting ferrule (16) contacts with nut (17) conical surface; Ball valve body (18) set inside has ball seat (19), and spheroid (20) is installed in the ball seat (19); The bottom of ball valve body (18) is equipped with connector (21), and the bottom of connector (21) is provided with refraction awl (22) and nozzle (23).
3. pressure fixing valve according to claim 1 is characterized in that: said main core (10) middle part is made and is angled 8 °～15 ° main core awl (12), forms the conical flow space between main core awl (12) and the restriction (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201382279U CN202510793U (en) | 2012-04-05 | 2012-04-05 | Constant pressure valve for preventing natural gas hydrates from being generated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201382279U CN202510793U (en) | 2012-04-05 | 2012-04-05 | Constant pressure valve for preventing natural gas hydrates from being generated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510793U true CN202510793U (en) | 2012-10-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201382279U Expired - Fee Related CN202510793U (en) | 2012-04-05 | 2012-04-05 | Constant pressure valve for preventing natural gas hydrates from being generated |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984909A (en) * | 2019-11-21 | 2020-04-10 | 西安安森智能仪器股份有限公司 | Automatic anti-freezing method and system for natural gas wellhead external pipeline |
-
2012
- 2012-04-05 CN CN2012201382279U patent/CN202510793U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984909A (en) * | 2019-11-21 | 2020-04-10 | 西安安森智能仪器股份有限公司 | Automatic anti-freezing method and system for natural gas wellhead external pipeline |
| CN110984909B (en) * | 2019-11-21 | 2022-02-18 | 西安安森智能仪器股份有限公司 | Automatic anti-freezing method and system for natural gas wellhead external pipeline |
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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: 20121031 Termination date: 20130405 |