CN203686312U - Ultrahigh-pressure normally open pneumatic control stop valve - Google Patents
Ultrahigh-pressure normally open pneumatic control stop valve Download PDFInfo
- Publication number
- CN203686312U CN203686312U CN201320719364.6U CN201320719364U CN203686312U CN 203686312 U CN203686312 U CN 203686312U CN 201320719364 U CN201320719364 U CN 201320719364U CN 203686312 U CN203686312 U CN 203686312U
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- Prior art keywords
- joint
- valve
- piston
- pressure
- valve stem
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- Expired - Lifetime
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- 210000004907 gland Anatomy 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 238000007665 sagging Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract 1
- 238000000462 isostatic pressing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses an ultrahigh-pressure normally open pneumatic control stop valve, which comprises a valve body (8), a valve stem sealing face and a piston (4), wherein the valve body (8) is provided with a high-pressure gas inlet A and a high-pressure gas outlet B; the valve stem sealing face is used for driving a valve stem to move by means of a spring force and fluid pressure to cut off or adjust valve port flow; the piston (4) is assembled between an upper cover (1) and a lower cover (3); the valve stem (12) is connected with the piston assembly through a first joint (6) and a second joint (11); a spring is embedded into the groove of the first joint, and the other end of the spring is supported to the end face of the piston (4); the central axis parallel with the valve stem is set on the lower cover; a guide pin (9) is used for controlling the stroke of the piston through a proximity switch (10); the guide pin (9) is fixedly connected onto the piston (4). The ultrahigh-pressure normally open pneumatic control stop valve disclosed by the utility model is reliable in sealing structure, easy in operation and high in safety factor and has an ultrahigh-pressure sealing effect; the valve stem is controlled to vertically move by adopting the piston assembly, and hard sealing is performed on the conical face of the valve stem for cutting off or adjusting the valve port medium flow, a higher gas loop can be controlled with smaller pressure.
Description
Technical field
The utility model relates to a kind of working pressure and can reach the ultrahigh pressure gas control stop valve of 20MPa～200MPa.
Background technique
Stop valve is also pipe valve, is most popular a kind of valve.Stop valve refers to the valve that closure member (valve rod) moves along 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.Due to the variation of valve seat port and the stroke of valve rod relation in direct ratio, be 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 medium circulation.Stop valve is only permitted medium one-way flow, has directivity when installation.Stop valve driving mode: manually, 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 device is mainly used in thermal power plant, nuclear power station, on the high temperature of petrochemical system, pressure duct.The valve member feature of this structure be simple in structure, single-side sealing performance is good, but the pressure that its sealing surface bears is larger, therefore it is large to open and close moment.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 connects and controls comparatively complexity, and automatically controlled valve member volume is large; and the control of ultrahigh pressure need be used gas control, and because working pressure is large, handling safety reliability requirement is high; 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, and safety coefficient is high, can use the ultrahigh pressure gas control shutoff valve open in usual of the higher gas return path of less pressure control.
The utility model solves the technological scheme that its technical problem adopts: a kind of ultrahigh pressure gas control shutoff valve open in usual, comprise, one is shaped with pressurized gas and imports and exports the valve body 8 of A, B and rely on spring force and hydrodynamic pressure promotion stem movement, cut off or the logical valve stem seal face of modulating valve aperture of door MEDIA FLOW, it is characterized in that, described valve rod is connected piston assembly by the first joint 6 with the second joint 11, spring is inlaid in the other end on the groove of joint 6 and withstands piston 4 end faces, and piston 4 is contained between upper cover 1 and lower cover 3; Described lower cover 3 is provided with parallel valve rod central axis, and by the slide-and-guide pin 9 of approach switch 10 control piston 4 strokes, guide finger 9 connects firmly on piston 4.The utility model has following beneficial effect than prior art.
Simple in structure, safe and reliable.The utility model, by the joint piston assembly that is connected, relies on spring force and hydrodynamic pressure to promote stem movement, can use the higher gas return path of less pressure control, cut-out or the logical valve thick stick conical surface of modulating valve aperture of door MEDIA FLOW seal firmly, sealing configuration is reliable, and easy operating, and safety coefficient is high.Adopt piston assembly bear valve rod transmission be subject to ultrahigh pressure medium produce axial force, and this power again by joint action to valve body, valve member stressing conditions greatly raises.
This practical can being directly installed on 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 region, easy to install and use.Can greatly solve so the bulky drawback of automatically controlled valve member.Valve member is installed concentratedly and can better be carried out safety protection to extra-high tension unit, has maintenance, safe feature.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model ultrahigh pressure gas control shutoff valve open in usual.
Fig. 2 is the profile schematic diagram of Fig. 1.
In figure: 1. upper cover, 2. seal ring, 3. lower cover, 4. piston, 5. spring, 6. the first joint, 7. lock ring, 8. valve body, 9. guide finger, 10. approach switch, 11. second joints, 12. valve rods, 13. glands, 14. combined seal rings.
Embodiment
In the ultrahigh pressure adjustable restrictive valve embodiment shown in Fig. 1, Fig. 2, there is one to be shaped with the valve body 8 of gas inlet and outlet A and B in prior art mode and to rely on spring 5 elastic force and hydrodynamic pressure promotes that valve rod 12 moves, cut-out or the logical valve thick stick sealing surface of modulating valve aperture of door MEDIA FLOW.Valve body 8 middle parts are shaped with the sagging tapped hole of second joint 11 that is spirally connected, and in the lower end surface of the multidiameter shaft of the second joint 11, the lock ring 7 that prevents that the second joint 11 is loosening are housed.Lock ring 7 limits the sense of rotation of the second joint 11.The second joint 11 is by the valve body 8 tapped hole valve body 8 that is threaded that sink, and pushes down the gland 13 sinking on tapped hole nose end, and gland 13 is pushed down the combined seal ring 14 being sleeved on valve rod 12.The first joint 6 is connected with the second joint 11, and the first joint 6 is connected with lower cover 3.Valve rod is threaded with piston 4 by the first joint 6, the second joint 11.Spring 5 is assembled in the first joint 6 grooves, and the other end withstands piston 4.The second joint 11 is connected with valve body 8, and connected the first joint 6, the first joints 6 of the second joint 11 are connected with lower cover 3.Upper cover 1 is threaded with lower cover 2.
Piston 3 is provided with parallel valve rod central axis, and by the slide-and-guide pin 9 of approach switch 10 control piston 4 strokes, guide finger 9 connects firmly on piston 4.Approach switch 10 connects firmly on lower cover 3, and guide finger 9 is positioned at the upper-end surface of approach switch 10, and through the stroke up and down of lower cover 3 control pistons 4, realizes and when piston moves up and down, keeps stable leading role.In the time adopting gas control piston assembly, the moving up and down of piston assembly control valve rod 12, the conical surface seal face of valve rod withstands the valve hole of valve body, to reach the effect of superhigh pressure sealing.Upper cover upper end portion is provided with connection piston cavity, and the air vent C of gas control piston controls gas and passes into piston cavity from air vent C.In the time that needs are opened stop valve, stop the air feed to import C, the spring force of spring 4 is just pressed piston 4, and piston 4 is with ovable valve stem 12 to move up together, valve open.In the time that needs are closed stop valve, to import C air feed, force piston to move down by gas pressure, piston is with valve rod to move down simultaneously, the cone mouth in the cone mouth power overhead-valve bar of valve rod end face, thus be sealed into the valve hole that exports A, B.In the time that guide finger and approach switch approach, approach switch is sender just, and air feed stops.Valve closing.
Claims (6)
1. a ultrahigh pressure gas control shutoff valve open in usual, comprise, one is shaped with pressurized gas and imports and exports A, the valve body (8) of B, rely on spring force and hydrodynamic pressure to promote stem movement, cut off or the valve stem seal face of modulating valve aperture of door circulation and be assemblied in upper cover (1) and lower cover (3) between piston (4), it is characterized in that, described valve rod (12) is connected piston assembly by first joint (6) of stack assembling with one heart with the second joint (11), spring is inlaid on the groove of the first joint (6), piston (4) end face is withstood in one end, described lower cover (3) is provided with parallel valve rod central axis, and by the slide-and-guide pin (9) of approach switch (10) control piston (4) stroke, guide finger (9) connects firmly on piston (4).
2. ultrahigh pressure according to claim 1 gas control shutoff valve open in usual, it is characterized in that, valve body (8) middle part is shaped with the sagging tapped hole of the second joint (11) that is spirally connected, and in the lower end surface of the multidiameter shaft of the second joint (11), the lock ring (7) that prevents that the second joint (11) is loosening is housed.
3. ultrahigh pressure according to claim 2 gas control shutoff valve open in usual, is characterized in that, the sense of rotation of lock ring (7) restriction the second joint (11).
4. ultrahigh pressure according to claim 1 gas control shutoff valve open in usual, it is characterized in that, the second joint (11) is by valve body (8) the tapped hole valve body (8) that is threaded that sink, and push down the gland (13) sinking on tapped hole nose end, gland (13) is sleeved on the combined seal ring (14) of valve rod (12).
5. ultrahigh pressure according to claim 1 gas control shutoff valve open in usual, it is characterized in that, the second joint (11) is connected with valve body (8), the second joint (11) the first joint (6) that is connected, the first joint (6) is connected with lower cover (3).
6. ultrahigh pressure according to claim 1 gas control shutoff valve open in usual, is characterized in that, upper cover (1) is threaded with lower cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320719364.6U CN203686312U (en) | 2013-11-06 | 2013-11-06 | Ultrahigh-pressure normally open pneumatic control stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320719364.6U CN203686312U (en) | 2013-11-06 | 2013-11-06 | Ultrahigh-pressure normally open pneumatic control stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686312U true CN203686312U (en) | 2014-07-02 |
Family
ID=51008211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320719364.6U Expired - Lifetime CN203686312U (en) | 2013-11-06 | 2013-11-06 | Ultrahigh-pressure normally open pneumatic control stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847904A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
-
2013
- 2013-11-06 CN CN201320719364.6U patent/CN203686312U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847904A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |