CN1786526A - Fast opening and closing insulating valve - Google Patents
Fast opening and closing insulating valve Download PDFInfo
- Publication number
- CN1786526A CN1786526A CN 200510111480 CN200510111480A CN1786526A CN 1786526 A CN1786526 A CN 1786526A CN 200510111480 CN200510111480 CN 200510111480 CN 200510111480 A CN200510111480 A CN 200510111480A CN 1786526 A CN1786526 A CN 1786526A
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- China
- Prior art keywords
- flashboard
- valve
- fast opening
- spool
- wedge
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Abstract
A fast opening and closing isolating valve includes a valve body with the outlet and inlet valve seats, a motor, a driving mechanism and a double-flashboard valve spool. The two sealing surfaces of the outlet and inlet valve seats are in the wedge-shaped arrangement. The double-flashboard valve spool is a wedge-shaped double-face sealed spool consisting of a wedge-shaped flashboard support, the upper and lower connectors and two flashboards.
Description
Technical field:
The invention relates to 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.There is following defective in this separating valve by motor driving fast opening and closing spool:
1, spool is parallel each other with the sealing surface between the valve seat of spring-supported two shoe brake plates and pipeline inlet/outlet, when closing pipeline, because the big side of loine pressure can push away valve seat with flashboard, therefore two shoe brake plates can not form tight the contact with valve seat simultaneously, can only realize one-way sealing, can't carry out two-way shutoff pipeline.
2, because spool rising or falling speed height, 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 invention provides a kind of fast opening and closing insulating valve, the flashboard that mainly solves pipeline inlet/outlet place can be pressed on the technical problem on the valve seat simultaneously, next be solve two flashboards can Automatic Fine Tuning in certain scope, secondly the technical problem that can fit tightly with sealing surface of seat is to solve the technical problem of impacting again.
The technological scheme that the present invention solves the problems of the technologies described above is:
A kind of fast opening and closing insulating valve comprises valve body, motor, driving mechanism, double-flashboard spool with import and outlet valve seat, and it is characterized in that: two sealing planes of this inlet/outlet valve seat are wedge-shaped arrangement; This double-flashboard spool is the spool of the wedge-type dual face seals be made up of the flashboard frame of wedge shape, upper binding head, lower union joint and two flashboards.
It is characterized in that: this two shoe brakes plate back side in opposite directions correspondence respectively is provided with spherical nest, is provided with the protruding spheroid with these two spherical nest couplings.
It is characterized in that: this protruding spheroid is integrated type or is made up of two semi-convex spheroids of symmetry that these two hemispheres are connected by straight pin.
It is characterized in that: between these two semi-convex spheroids, be provided with spacer.
It is characterized in that: be provided with the buffering damping device that comprises butterfly spring, this butterfly spring one end is resisted against the lifting of driving mechanism and the engagement of threaded stem portion and falls on female convex shoulder, and the other end is resisted against the thrust-bearing place that is supported on this buffering damping device cylinder body.
The present invention has following beneficial effect:
1, adopts the sealing configuration of identical wedge-shaped arrangement owing to valve seat and spool, along with moving down of valve rod, the flashboard frame of spool drives the flashboard of both sides and wedges between two valve seats as chock, produced two flashboards have been pressed against thrust on the valve seat respectively, this thrust is enough to overcome the hydrodynamic pressure in the pipeline, two flashboards can be pressed on the corresponding import and export valve seat simultaneously, pipeline is realized two-way safe shutoff.
2, flashboard is by protruding sphere supports, flashboard can freely be done to regulate arbitrarily in certain cone angle scope around this protruding spheroid, therefore flashboard is in the process that decline is closed, can regulate voluntarily, make it to fit closely, overcome the error that factors such as temperature, pressure, external force form in manufacturing and the use with valve seat.
3, the buffering damping device of mainly being made up of butterfly spring can absorb motor, transmission device effectively in high-speed starting or the impact energy when stopping, thereby prevents and slowed down influence and the damage of impact energy to valve and pipe-line system.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the STRUCTURE DECOMPOSITION schematic representation of wedge-type double-flashboard valve of the present invention.
Fig. 3 is a buffering damping device 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, and it comprises flashboard 71 (referring to Fig. 2), flashboard frame 72, straight pin 76, upper binding head 78, lower union joint 74, hemisphere 75.This flashboard frame 72 is a wedge-like body wide at the top and narrow at the bottom, the centre is provided with the hole 724 of perforation, upper end is one to have externally threaded joint 721, this joint 721 has the hole that holds valve rod 5 tail ends 52, and flashboard frame 72 both sides of wedge shape be respectively arranged with valve body 6 valve pockets 65 on the chute 723 that matches of guiding rib.This upper binding head 78 and lower union joint 74 are set in respectively on the cuboid of these flashboard frame 72 upper and lower ends, and are fixed with round nut 79, bolt 73 respectively.Two shoe brake plates 71 place flashboard frame 72 both sides respectively, its side face is provided with circular groove 711, middle part, the back side is provided with the spherical nest 712 of depression, the arc convex edge 781,741 of upper and lower connecting head 78,74 both sides embeds respectively in the corresponding circular groove 711, because there are the gap in this arc convex edge 781,741 and 711 of circular grooves, thereby two flashboards, 71 floating grounds are connected on the flashboard frame 72.In two flashboards 71, two spherical nests 712 in opposite directions, be provided with the bispherical protruding spheroid that has that semi-convex spheroid 75 by two symmetries constitutes, the arc sphere of this semi-convex spheroid 75 and the arc sphere of spherical nest 712 are complementary, and they are fused with straight pin 76, this protruding spheroid is in the hole 724 of flashboard frame 72, when valve closing, formed a firm spherical bearing, can make two flashboards 71 do limited any rotation thereon.Two fixing pins 77 that these wedge-type double-flashboard spool 7 usefulness penetrate in two pin-and-holes 722 of flashboard frame 72 are fixedly connected on valve rod 5 tail ends 52.Between this two semi-convex spheroid 75, can be provided with spacer 51, to regulate the thickness of above-mentioned protruding spheroid, reach two flashboards 71 in closing closed procedure mutually massively against.
The above-mentioned bispherical protruding spheroid that has that is made of two semi-convex spheroids 75 also can be a complete single protruding spheroid.
On the valve gap 66 of this valve body 6 sealed letter 8 is set, sealing letter 8 mat clamping nuts tamp stuffing box packing around under separate cover the valve rod 5, stop 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 (referring to Fig. 3), cylinder cap 45, thrust-bearing 46 and butterfly 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 output terminal hoisting nut 31 of driving mechanism 3 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.Several stacked butterfly springs 42 that are positioned at this cavity are set on the hoisting nut 31, are positioned at undermost butterfly spring 42 and directly or by pad 43 are resisted against the end face of convex shoulder 311, go up a butterfly spring 42 most and are 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 butterfly 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.
Fast opening and closing insulating valve also is provided with handwheel 2 except that opening and closing with motor 1 fast lifting, drive hoisting nut 31 rotations by rotation hand wheel 2 and realize manual opening-closing.
The wedge-shaped arrangement of import valve seat 62 of the present invention or 63 liang of sealing planes of outlet valve seat, wedge shape with flashboard frame 72 in the double-flashboard spool 7, it is not only the symmetric wedge that equates by two side rake α shown in Figure 1, also comprise the asymmetric wedge shape that two side rake α do not wait, and the wedge shape of the one-sided inclination of oblique angle α=0 of a side.
Claims (5)
1, a kind of fast opening and closing insulating valve comprises valve body, motor, driving mechanism, double-flashboard spool with import and outlet valve seat, and it is characterized in that: two sealing planes of this inlet/outlet valve seat are wedge-shaped arrangement; This double-flashboard spool is the spool of the wedge-type dual face seals be made up of the flashboard frame of wedge shape, upper binding head, lower union joint and two flashboards.
2, fast opening and closing insulating valve according to claim 1 is characterized in that: this two shoe brakes plate back side in opposite directions correspondence respectively is provided with spherical nest, is provided with the protruding spheroid with these two spherical nest couplings.
3, fast opening and closing insulating valve according to claim 2 is characterized in that: this protruding spheroid is integrated type or is made up of two semi-convex spheroids of symmetry that these two hemispheres are connected by straight pin.
4, fast opening and closing insulating valve according to claim 3 is characterized in that: be provided with spacer between these two semi-convex spheroids.
5, according to claim 1,2,3 or 4 described fast opening and closing insulating valves, it is characterized in that: be provided with the damping device buffering that comprises butterfly spring, this butterfly spring 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510111480XA CN100501207C (en) | 2005-12-14 | 2005-12-14 | Fast opening and closing insulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510111480XA CN100501207C (en) | 2005-12-14 | 2005-12-14 | Fast opening and closing insulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1786526A true CN1786526A (en) | 2006-06-14 |
| CN100501207C CN100501207C (en) | 2009-06-17 |
Family
ID=36784096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510111480XA Active CN100501207C (en) | 2005-12-14 | 2005-12-14 | Fast opening and closing insulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100501207C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089641A (en) * | 2016-07-21 | 2016-11-09 | 江苏盈科汽车空调有限公司 | A kind of compressor of air conditioner |
-
2005
- 2005-12-14 CN CNB200510111480XA patent/CN100501207C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089641A (en) * | 2016-07-21 | 2016-11-09 | 江苏盈科汽车空调有限公司 | A kind of compressor of air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100501207C (en) | 2009-06-17 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 201814 Shanghai public road, Jiading District, No. 111 Patentee after: Shanghai valve factory Limited by Share Ltd Address before: 201805 No. 28, Changji Road, Anting Town, Shanghai, Jiading District Patentee before: Shanghai Valve Plant |