CN2881246Y - Fast oper-close isolation valve having buffer damp - Google Patents
Fast oper-close isolation valve having buffer damp Download PDFInfo
- Publication number
- CN2881246Y CN2881246Y CN 200520047496 CN200520047496U CN2881246Y CN 2881246 Y CN2881246 Y CN 2881246Y CN 200520047496 CN200520047496 CN 200520047496 CN 200520047496 U CN200520047496 U CN 200520047496U CN 2881246 Y CN2881246 Y CN 2881246Y
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- valve
- buffer
- damp
- utility
- fast
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Abstract
The utility model relates to a valve, in particular to a fast open-close isolation valve having buffer damp, which comprises a valve body with a valve seat provided with an inlet and an outlet, an electric machine, a gearing device and a valve core with double gate valve. The utility model is characterized in that: a buffer damp device containing an elastic component is provided; one end of the elastic component leans against the shoulder of the lift nut toothing the gearing device and the screwthread part of a valve stem, and the other end leans against the thrust bearing on the cylinder body of the buffer damp device. The utility model solves the technological problem of impact generated by fast open-close movement of the valve core, realizing shock free balance and safe valve open-close operation.
Description
Technical field:
The utility model is about valve, especially about making the separating valve of spool fast opening and closing.
Background technique:
The pipeline of nuclear power station one circuit auxiliary system is provided with fast opening and closing insulating valve, in order to cut off or to connect pipeline, the Safety function of executive system.When loss of-coolant accident (LOCA) takes place, to the system that does not need to come into operation, implement quick closedown, to prevent and to slow down after the loss of-coolant accident (LOCA) that radioactive material escapes in the containment.This quick-acting valve is a spool with double-flashboard, use motor driving, with the hoisting nut of rotating in the driving mechanism, make valve rod fast lifting in 10 seconds, thereby drive the quick upper and lower motion of spool be positioned at stem bottom, the import and the outlet that finally make the flashboard of spool both sides close or open pipeline simultaneously.The defective that this separating valve by motor driving fast opening and closing spool exists is a spool rising or falling speed height, and when out of service, its inertial impact force is big unexpected, each component of valve is caused decrease ring easily.
Summary of the invention:
The utility model provides a kind of fast opening and closing insulating valve that the buffering damping is arranged, the technical problem of the impact that the motion of solution spool high-speed opening and closing is produced.
The technological scheme that the utility model solves the problems of the technologies described above is:
A kind of fast opening and closing insulating valve that the buffering damping is arranged, comprise valve body, motor, driving mechanism, double-flashboard spool with import and outlet valve seat, it is characterized in that: be provided with the buffering damping device that comprises elastic element, this elastic element one end is resisted against on the convex shoulder of hoisting nut of driving mechanism and threaded stem portion engagement, and the other end is resisted against the thrust-bearing place that is supported on this buffering damping device cylinder body.
It is characterized in that: this elastic element is spiral compression spring or butterfly spring or cylindricality rubber body.
The beneficial effects of the utility model are:
Can absorb motor, transmission device effectively in high-speed starting or the impact energy when stopping, thereby prevent and slowed down influence and the damage of impact energy, make the keying that valve can be steady, safe valve and pipe-line system.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is an another kind of structural representation of the present invention.
Embodiment:
See also shown in Figure 1ly, the present invention includes valve body 6, motor 1, driving mechanism 3 and double-flashboard spool 7.This valve body 6 is provided with pipeline 61, be provided with import valve seat 62 in opposite directions in valve pocket 65 places respectively and export valve seat 63 at this pipeline 61, two seal faces of this import valve seat 62 and outlet valve seat 63 are the squint of wedge shape and arrange, double-flashboard spool 7 is can regulate wedge-type dual face seals structures, it is a wedge-like body wide at the top and narrow at the bottom, and the wedge shape that is with import valve seat 62 and outlet valve seat 63 is complementary.
The valve gap 66 of this valve body 6 is provided with sealed letter 8, and sealing letter 8 mat clamping nuts tamp the stuffing box packing in the letter around valve rod 5, stops up valve pocket 65 along the passage of valve rod 5 to external leakage.
Output terminal at driving mechanism 3 is provided with buffering damping device 4, this buffering damping device 4 mainly is made up of cylinder body 44, cylinder cap 45, thrust-bearing 46 and spiral compression spring 42, this cylinder body 44 is screwed on the connecting sleeve 67 at valve gap 66 tops, and by the convex shoulder of cylinder body 44 lumen port cylinder cap 45 is pressed against connecting sleeve 67 tops.The end that the hoisting nut 31 of driving mechanism 3 output terminals has a convex shoulder 311 is inserted in the cavity that this cylinder cap 45 and cylinder body 44 surround, and constitutes sealing with the O shape circle 41 that is arranged on cylinder cap 45, cylinder body 44 shaft hole inner walls respectively; These convex shoulder 311 underrun thrust-bearings 46 are bearing on the cylinder cap 45.The spiral compression spring 42 that is positioned at this cavity is set on the hoisting nut 31, and the bottom of this spiral compression spring 42 directly or by pad 43 is resisted against the end face of convex shoulder 311, and its top is resisted against cylinder body 44 places by thrust-bearing 46.The helical thread portion 51 at valve rod 5 tops and hoisting nut 31 engagements.When this buffering damping device 4 after installing on the valve body 6, this spiral compression spring 42 is in its pre-compressed state, therefore can alleviate or eliminate the upper and lower impact force that produces in moving of valve rod 5 and double-flashboard spool 7 high speeds effectively, the assurance valve working is steady, safety.
The structure of another kind of buffering damping device 4 ' of the present utility model as shown in Figure 2, the difference of the buffering damping device 4 in it and the foregoing description is to replace spiral compression springs 42 as the elastic element that absorbs or discharge impact force with several stacked butterfly springs 47, these several butterfly spring 47 1 positive one anti-phase superimposed being enclosed within on the hoisting nut 31 mutually, be positioned at undermost butterfly spring 47 and directly or by pad 43 be resisted against the end face of convex shoulder 311,47 of butterfly springs that are positioned at the superiors are resisted against cylinder body 44 places by thrust-bearing 46.
The cylindricality rubber body that can also adopt the utility model cushions the elastic element in the damping device 4, this cylindricality rubber body has central shaft hole, in order to be set on the hoisting nut 31, the bottom end face of this cylindricality rubber body directly or be resisted against by pad 43 on the end face of convex shoulder 311 of hoisting nut 31, its top end face then is resisted against cylinder body 44 places by thrust-bearing 46.
Claims (2)
1, a kind of fast opening and closing insulating valve that the buffering damping is arranged, comprise valve body, motor, driving mechanism, double-flashboard spool with import and outlet valve seat, it is characterized in that: be provided with the buffering damping device that comprises elastic element, this elastic element one end is resisted against on the convex shoulder of hoisting nut of driving mechanism and threaded stem portion engagement, and the other end is resisted against the thrust-bearing place that is supported on this buffering damping device cylinder body.
2, the fast opening and closing insulating valve that the buffering damping is arranged according to claim 1, it is characterized in that: this elastic element is spiral compression spring or butterfly spring or cylindricality rubber body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047496 CN2881246Y (en) | 2005-12-14 | 2005-12-14 | Fast oper-close isolation valve having buffer damp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047496 CN2881246Y (en) | 2005-12-14 | 2005-12-14 | Fast oper-close isolation valve having buffer damp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881246Y true CN2881246Y (en) | 2007-03-21 |
Family
ID=37881085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520047496 Expired - Lifetime CN2881246Y (en) | 2005-12-14 | 2005-12-14 | Fast oper-close isolation valve having buffer damp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881246Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728141A (en) * | 2021-01-14 | 2021-04-30 | 芜湖市金贸流体科技股份有限公司 | Buried elastic seat seal gate valve |
-
2005
- 2005-12-14 CN CN 200520047496 patent/CN2881246Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728141A (en) * | 2021-01-14 | 2021-04-30 | 芜湖市金贸流体科技股份有限公司 | Buried elastic seat seal gate 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 |
Granted publication date: 20070321 |
|
| EXPY | Termination of patent right or utility model |