CN203067873U - Super high pressure normally-closed type air control stop valve - Google Patents
Super high pressure normally-closed type air control stop valve Download PDFInfo
- Publication number
- CN203067873U CN203067873U CN 201220756150 CN201220756150U CN203067873U CN 203067873 U CN203067873 U CN 203067873U CN 201220756150 CN201220756150 CN 201220756150 CN 201220756150 U CN201220756150 U CN 201220756150U CN 203067873 U CN203067873 U CN 203067873U
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- valve
- closed type
- piston
- high pressure
- spring
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Abstract
The utility model discloses a super high pressure normally-closed type air control stop valve which comprises a valve body (7) and a valve rod seal face, wherein the valve body (7) is provided with a high pressure gas inlet A and a high pressure gas outlet B and pushes a valve rod to move by utilizing elastic force of a spring and fluid pressure, and the valve rod seal face cuts or adjusts medium flow of a valve hole. The super high pressure normally-closed type air control stop valve is characterized in that the valve rod is connected with a piston assembly through a connector (6), the spring is located on an end direction step of a piston (13) through a spring outer sleeve (1) axially and fixedly connected onto a cylinder sleeve (3), a sliding guide pin (4) which is parallel to the central axis of the valve rod and controls stroke of the piston (13) through a proximity switch (2) is arranged on cylinder sleeve (3), and the sliding guide pin (4) is fixedly connected onto the piston (13). According to the super high pressure normally-closed type air control stop valve, gas is adopted to control the piston assembly, the piston assembly controls vertical movement of the valve rod, small pressure is utilized to control a gas return circuit with high pressure, and hard seal of the valve rod conical face for cutting or adjusting medium flow of the valve hole is achieved. The super high pressure normally-closed type air control stop valve is reliable in seal structure, easy to operate, high in safety coefficient and good in super high pressure seal effect.
Description
Technical field
The utility model relates to the ultrahigh pressure gas control stop valve that a kind of working pressure can reach 20MPa～200MPa.
Background technique
Stop valve also is pipe valve, is to use the most a kind of valve.Stop valve refers to the valve that closure member (valve rod) moves along the valve seat center line.According to this mobile form of valve rod, the variation of valve seat port is and valve rod travel relation in direct ratio.Because the variation of valve seat port and the stroke relation in direct ratio of valve rod are very suitable for the adjusting to flow.Therefore, such valve is suitable as cut-out or adjusting and throttling use very much.The closure of stop valve is to rely on valve rod pressure, and valve stem seal face and sealing surface of seat are fitted tightly, and stops the medium circulation.Stop valve is only permitted the medium one-way flow, and directivity is arranged during installation.The stop valve driving mode: manually, the umbrella gear transmission, pneumatic, electronic, surge, the interlock of gas-liquid linked, electric liquid.General. the stop valve on the pipeline of high temperature, high-pressure medium or the device is mainly used in thermal power plant, nuclear power station, on the high temperature of petrochemical system, the pressure duct.The valve member characteristics of this structure are simple in structure, one-sided good seal performance, but the pressure that its sealing surface bears is bigger, so keying moment is big.Along with the continuous expansion of isostatic pressing technology application, macrotype isostatic pressing machine also increases thereupon.But the general floor space of macrotype isostatic pressing machine is very huge, between each system pipeline connect and control comparatively complicated, automatically controlled valve member volume is big; and the control of ultrahigh pressure need be used gas control, because working pressure is big, and handling safety reliability requirement height; safety protection, maintainability, Security are difficult for guaranteeing.
Summary of the invention
The purpose of this utility model is to provide a kind of sealing configuration reliable, the safety coefficient height, and the enough less pressure of energy is controlled the ultrahigh pressure Normally closed type gas control shutoff valve of higher gas return path.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of ultrahigh pressure Normally closed type gas control shutoff valve, comprise, one is shaped on pressurized gas and imports and exports the valve body 7 of A, B and rely on spring force and the motion of hydrodynamic pressure promotion valve thick stick, the valve thick stick sealing surface that cut-out or modulating valve aperture of door MEDIA FLOW are logical, it is characterized in that, described valve rod is by joint 6 continuous piston assemblys, and spring is seated in piston 13 ends on step by axially connecting firmly the spring overcoat 1 on cylinder sleeve 3; Described cylinder sleeve 3 is provided with parallel valve rod central axis, and by the slide-and-guide pin 4 near switch 2 control pistons 13 strokes, guide finger 4 connects firmly on piston 13.
The utility model has following beneficial effect than prior art.
Simple in structure, safe and reliable.The utility model relies on spring force and hydrodynamic pressure to promote the motion of valve thick stick by the continuous piston assembly of joint, can control higher gas return path by enough less pressure, the logical valve thick stick conical surface of cut-out or modulating valve aperture of door MEDIA FLOW seals firmly, sealing configuration is reliable, and easy operating, the safety coefficient height.Adopt piston assembly to bear the axial force that produced by the ultrahigh pressure medium of valve rod transmission, and this power again by joint action to valve body, valve member stressing conditions greatly raises.
This practical can directly being installed on the pipeline, superhigh pressure sealing adopts the hard seal form of the conical surface, good sealing effect and safe and reliable, valve member can collective be contained in a zone, and is easy to install and use.Can solve the bulky drawback of automatically controlled valve member greatly like this.Valve member is installed concentratedly and can better be carried out safety protection to extra-high tension unit, has maintenance, safe characteristics.
Description of drawings
Fig. 1 is the structural representation of the utility model ultrahigh pressure Normally closed type gas control shutoff valve.
Fig. 2 is the profile schematic representation of Fig. 1.
Among the figure: 1. spring overcoat, 2. near switch, 3. cylinder sleeve, 4. guide finger, 5. cylinder body, 6. joint, 7. valve body, 8. gland, 9. combined seal ring, 10. adjusting screw, 11. nuts, 12. springs, 13. piston 14.O shape seal ring I, 15.O shape circle, 16. valve rods, 17. anti-loose rings, 18. spring press-covers.
Embodiment
In Fig. 1, ultrahigh pressure adjustable restrictive valve embodiment shown in Figure 2, there is one to be shaped on fluid in the prior art mode and to import and export the valve body 7 of A, B and rely on spring 12 elastic force and hydrodynamic pressure promotes valve rod 16 motions, cuts off or valve thick stick sealing surface that modulating valve aperture of door MEDIA FLOW is logical.Valve body 7 middle parts are shaped on the sagging tapped hole of the joint 6 that is spirally connected, and the anti-loose ring 17 that prevents that joint 6 is loosening are housed, the sense of rotation of anti-loose ring 17 limiting joints 6 in the lower end surface of the multidiameter shaft of joint 6.Joint 6 is by the valve body 7 tapped holes valve body 7 that is threaded that sink, and pushes down the gland 8 on the tapped hole nose end that sink, and gland 8 is pushed down the combined seal ring 9 that is sleeved on the valve thick stick 16.Valve rod 16 is by joint 6 continuous piston assemblys, and spiral-shaped spring 12 is seated in piston 13 ends on step by axially connecting firmly the spring overcoat 1 on cylinder sleeve 3.Valve rod 16 continuous pistons 13, spring 12 is entangled in the upper end.Spring 12 upper end portions are provided with spring press-cover 18.Described piston assembly comprises that the bolts assemblies that distributes by cylinder body 5 circumferential end surfaces is the cylinder sleeve 3 of one, and piston 13 is assemblied in the cylinder sleeve 3, and piston circumferentially is embedded with O shape and embeds seal ring 14.The end step of spring overcoat 1 connects firmly in the circular groove that described pilot hole lower end step hole forms by cylinder sleeve 3 middle part pilot holes, and is connected movingly with the big end step axle of described piston 13 upper end multidiameter shafts.Be provided with the adjusting screw 10 by spring press-cover 18 Regulation springs 12 pretightening forces in spring overcoat 1 upper end.Adjusting screw 10 is threaded with spring overcoat 1.Adjusting screw 10 external application nuts 11 are tightened.Adjust the sealing load size that adjusting screw 10 just can be regulated stop valve.
Claims (6)
1. ultrahigh pressure Normally closed type gas control shutoff valve, comprise, one is shaped on pressurized gas and imports and exports the valve body (7) of A, B and rely on spring force and the motion of hydrodynamic pressure promotion valve thick stick, the valve stem seal face that cut-out or modulating valve aperture of door MEDIA FLOW are logical, it is characterized in that, described valve rod is by the continuous piston assembly of joint (6), and spring is seated in piston (13) end on step by axially connecting firmly the spring overcoat (1) on cylinder sleeve (3); Described cylinder sleeve (3) is provided with parallel valve rod central axis, and by the slide-and-guide pin (4) near switch (2) control piston (13) stroke, guide finger (4) connects firmly on piston (13).
2. ultrahigh pressure Normally closed type gas control shutoff valve according to claim 1, it is characterized in that, valve body (7) middle part is shaped on the sagging tapped hole of the joint that is spirally connected (6), in the lower end surface of the multidiameter shaft of joint (6) the anti-loose ring (17) that prevents that joint (6) is loosening is housed, the sense of rotation of anti-loose ring (17) limiting joint (6).
3. ultrahigh pressure Normally closed type gas control shutoff valve according to claim 1, it is characterized in that, joint (6) connects valve body (7) by the sagging tapped hole of valve body (7), and pushes down the gland (8) on the tapped hole nose end that sink, and gland (8) is pushed down the combined seal ring (9) that is sleeved on the valve rod (16).
4. ultrahigh pressure Normally closed type gas control shutoff valve according to claim 1, it is characterized in that, the end step of spring overcoat (1) is by cylinder sleeve (3) middle part pilot hole, connect firmly in the circular groove that described pilot hole lower end step hole forms, and be connected movingly with the big end step axle of described piston (13) upper end multidiameter shaft.
5. ultrahigh pressure Normally closed type gas control shutoff valve according to claim 1 is characterized in that, is provided with the adjusting screw (10) by spring press-cover (18) Regulation spring (12) pretightening force in spring overcoat (1) upper end.
6. ultrahigh pressure Normally closed type gas control shutoff valve according to claim 5 is characterized in that, adjusting screw (10) is threaded with spring overcoat (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220756150 CN203067873U (en) | 2012-12-26 | 2012-12-26 | Super high pressure normally-closed type air control stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220756150 CN203067873U (en) | 2012-12-26 | 2012-12-26 | Super high pressure normally-closed type air control stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067873U true CN203067873U (en) | 2013-07-17 |
Family
ID=48766657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220756150 Expired - Lifetime CN203067873U (en) | 2012-12-26 | 2012-12-26 | Super high pressure normally-closed type air control stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067873U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542153A (en) * | 2013-10-30 | 2014-01-29 | 杭州春江阀门有限公司 | Overpressure prevention pressure-relief valve |
| CN108507780A (en) * | 2018-06-19 | 2018-09-07 | 深圳市强瑞电子有限公司 | Pneumatic valve test equipment and its test method |
| CN113074273A (en) * | 2021-04-24 | 2021-07-06 | 精工阀门集团有限公司 | Steam regulating valve capable of being automatically closed |
-
2012
- 2012-12-26 CN CN 201220756150 patent/CN203067873U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542153A (en) * | 2013-10-30 | 2014-01-29 | 杭州春江阀门有限公司 | Overpressure prevention pressure-relief valve |
| CN108507780A (en) * | 2018-06-19 | 2018-09-07 | 深圳市强瑞电子有限公司 | Pneumatic valve test equipment and its test method |
| CN113074273A (en) * | 2021-04-24 | 2021-07-06 | 精工阀门集团有限公司 | Steam regulating valve capable of being automatically closed |
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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: 20130717 |
|
| CX01 | Expiry of patent term |