CN203230913U - Quick-opening valve with double blind pipe structure - Google Patents
Quick-opening valve with double blind pipe structure Download PDFInfo
- Publication number
- CN203230913U CN203230913U CN 201320056410 CN201320056410U CN203230913U CN 203230913 U CN203230913 U CN 203230913U CN 201320056410 CN201320056410 CN 201320056410 CN 201320056410 U CN201320056410 U CN 201320056410U CN 203230913 U CN203230913 U CN 203230913U
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- valve
- piston
- valve body
- blind pipe
- piston cavity
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Abstract
The utility model belongs to a quick-opening valve with a double blind pipe structure, more specifically referring to a valve used for a nuclear power station containment vessel recirculation system and comprising a valve cover, a piston chamber and a valve body; the valve cover is in connection with the piston chamber; the piston chamber is in direct connection with the valve body; a piston is provided in the piston chamber; a piston ring is arranged on the side of the piston and is hung under the valve cover through a draw-in bolt which is provided with a plane of weakness; a buffer pipe assembly is arranged under the piston. Blind pipes are arranged both in the entrance end and the exit end of the valve body and the ends of the blind pipes are provided with sleeves; the bottom of the valve body is provided with a buffer plate and a baseplate, wherein the buffer plate is in connection with the valve body, buffer pipes are arranged above the buffer plate, and the baseplate and the valve body are also in connection through bolts; a position indicating assembly is arranged on the side of the bottom of the valve body. The advantages are that channels of the valve employ a double blind pipe structure; the blind pipes form a complete enclosing integrated structure, guaranteeing zero leakage of the valve in a closure state.
Description
Technical field
The invention belongs to a kind of quick opening valve of double blinding tubular construction, be specifically related to a kind of valve for the nuclear power plant containment shell recirculating system.
Background technique
The safety problem of nuclear power station is the problem that artificer and the public pay close attention to very much always.For the Security of nuclear power station, big little reliability to equipment all is vital to complicated safety system design, and valve is as the control apparatus of medium, and its reliability requirement is particularly strict.
In the containment recirculating system of nuclear power station, design has a class valve, and requirement is closed condition when normally moving in nuclear power plant, and recirculating system quits work; When nuclear power plant takes place to require valve can rapid and reliablely open the recirculation that containment is provided after the LOCA accident.This class valve is carried out safety related functions, and the functional requirement with 2 harshnesses: valve can guarantee the zero leakage of medium in closed position; Require valve to open reliably under the accident conditions.
Summary of the invention
The quick opening valve that the purpose of this invention is to provide a kind of double blinding tubular construction, it can maintain the closed position under nominal situation, and can reliably guarantee the zero leakage of medium; Can open under accident conditions provides the medium circulation.
The present invention is achieved in that a kind of quick opening valve of double blinding tubular construction, and it comprises valve gap, piston cavity and valve body, and valve gap is connected with piston cavity, and piston cavity directly is connected with valve body; Be provided with piston in the piston cavity, the piston side is provided with piston ring, is hung under the valve gap by turnbuckle, and turnbuckle is provided with place's plane of weakness, and the piston below is provided with the separator tube assembly; Be provided with blind pipe in the entrance point of valve body and the outlet end, the end of blind pipe is provided with sleeve; The valve body bottom is provided with cushion plate and base plate, and wherein cushion plate is connected with valve body, and the top is equipped with separator tube, and base plate also is to be connected by bolt with valve body; The position indication component then is located at the side of valve body bottom.
When valve was connected with pipeline, medium flowed into blind pipe under the normal state, and blind pipe is structure as a whole and keeps sealing reliably, and valve keeps closed condition; When requiring valve open, the drive unit of valve produces thrust, and the effect that piston is subjected to thrust moves downward, and at first breaks turnbuckle, and then impingement sleeve and cut off blind pipe fast makes the medium conducting, and piston rests on the bottom of piston cavity; The blind pipe end of cutting off simultaneously moves downward together with sleeve always, rests on the cushion plate of valve bottom the assembly that position indication component outgoing position index signal and reliable locking are cut off.
Advantage of the present invention is, the runner of valve has adopted the double blinding tubular construction, and blind pipe is the integrative-structure of complete closed, has guaranteed the zero leakage under the valve closing state; The end of blind pipe and the joint of body are thin-walled design, utilize the impact of piston can open valve reliably, and structure and the pipeline of double blinding pipe well are connected, and satisfy medium circulation requirement.
Description of drawings
Fig. 1 is the schematic representation of the quick opening valve of a kind of double blinding tubular construction provided by the present invention;
Fig. 2 is sleeve 8 schematic representation;
Fig. 3 is the valve open view.
Among the figure, 1 valve gap; 2 piston cavity; 3 valve bodies; 4 pistons; 5 turnbuckles; 6 separator tube assemblies; 7 blind pipes; 8 sleeves; 9 position indication components; 10 cushion plates; 11 base plates.
Embodiment
Below in conjunction with accompanying drawing and example the present invention is described in detail:
As shown in Figure 1, a kind of quick opening valve of double blinding tubular construction, it comprises valve gap 1, piston cavity 2 and valve body 3, and valve gap 1 and piston cavity 2 are connected by bolt, and piston cavity 2 directly is connected by screw thread with 3 of valve bodies; Piston 4 is installed in the piston cavity 2, and piston 4 sides are equipped with piston ring, are hung under the valve gap 1 by turnbuckle 5, and turnbuckle 5 designs have place's plane of weakness, and piston 4 belows are equipped with separator tube assembly 6; In the entrance point of valve body 3 and the outlet end 2 identical blind pipes 7 are installed; The end of 2 blind pipes 7 is equipped with sleeve 8; Valve body 3 bottoms are equipped with cushion plate 10 and base plate 11, and wherein cushion plate 10 and valve body 3 are connected by bolt, and the top is equipped with separator tube; Base plate 11 also is to be connected by bolt with valve body 3; 9 sides that are installed in valve body 3 bottoms of position indication component.
When valve was connected with pipeline, medium flowed into blind pipe 7 under the normal state, and blind pipe is structure as a whole, and kept sealing reliably, and valve keeps closed condition; When requiring valve open, the drive unit of valve produces thrust, and the effect that piston 4 is subjected to thrust moves downward, and at first breaks turnbuckle 5, and then impingement sleeve 8 and cut off blind pipe 7 fast makes the medium conducting, and piston 4 rests on the bottom of piston cavity 2; The blind pipe end of cutting off simultaneously moves downward together with sleeve 8 always, rests on the cushion plate 10 of valve bottom the assembly that position indication component 9 outgoing position index signals and reliable locking are cut off.Valve is provided with the separator tube assembly below piston, for the energy behind the absorption piston impact; Above the cushion plate of valve body bottom, be provided with separator tube simultaneously, be used for absorbing the impact of the assembly of being cut off.
A kind of quick opening valve of double blinding tubular construction maintains the closed position under nominal situation and guarantees the zero leakage of medium; Can open the medium circulation that provides good under the accident conditions reliably.
Realize that technical characterstic of the present invention has:
1. double blinding tubular construction
Blind pipe 7 quantity shown in Figure 1 are 2, and the entrance point of valve and outlet end are respectively installed 1.The valve of conventional structure such as gate valve, stop valve etc. all can not absolutely guarantee the zero leakage of medium in off position, and particularly in the situation of the high medium of pressure fluctuation, and sealing surface is aging, the leakage that can both produce valve.The structure of blind pipe such as same segment pipe add an end socket, and so blind pipe makes valve keep closed condition when normal the use, and can simple and effectively reach the harsh requirement of zero leakage; Under the open mode, the structure of double blinding pipe again can be well and pipeline be connected, satisfy medium circulation requirement.This is simple in structure, is easy to processing, and the zero leakage when absolutely having guaranteed valve closing, reliable performance.
2. the piston cavity structure of split
The piston impact structure is arranged in the valve, very high to the required precision of piston and piston cavity.As shown in Figure 1, this valve is the piston cavity structure of split.The piston cavity inboard is 2 cylinder types guiding cavitys up and down, is 2 up big and down small cylindrical structures corresponding to piston.When the piston cavity structure of split has been avoided valve body and piston cavity one, the machining piston lower guide to the time can not guarantee the problem of precision; And the guiding cavity is circular cross-section all, is easy to processing, has effectively guaranteed machining accuracy.
3. Du Te tube-in-tube structure
Valve is provided with unique part sleeve that is hit, and concrete structure is seen Fig. 2.Sleeve body is round structure, is processed with 2 identical circular troughs at fore-and-aft direction and is used for installing the blind pipe end; Top is processed with cylinder boss and bears piston impact; About be processed with plane spacing when being used for motion; The square groove of below is used for the position indication.This structure processing is simple, and 2 blind pipes are effectively linked up.When the end of blind pipe was cut off, 2 blind pipe ends all were limited in the sleeve and move downward together, and sleeve finally stops and be locked at valve body when bottom, and the blind pipe end that 2 quilts shear off also is fixed in the sleeve.
4. multiduty position indication component
The position indication component has adopted magnetic switch, and magnet and switch keep certain distance when valve closing; When valve open, the inclined-plane latch motion that sleeve promotes the position indication component makes magnet and switch fit position indication component output signal.The position indication component also has latch functions except the position deixis, effectively fixes the assembly of shearing.Fig. 3 is the valve open state.
Claims (2)
1. the quick opening valve of a double blinding tubular construction, it is characterized in that: it comprises valve gap (1), piston cavity (2) and valve body (3), and valve gap (1) is connected with piston cavity (2), and piston cavity (2) directly is connected with valve body (3); Be provided with piston (4) in the piston cavity (2), piston (4) side is provided with piston ring, is hung under the valve gap (1) by turnbuckle (5), and turnbuckle (5) is provided with place's plane of weakness, and piston (4) below is provided with separator tube assembly (6); Be provided with blind pipe (7) in the entrance point of valve body (3) and the outlet end, the end of blind pipe (7) is provided with sleeve (8); Valve body (3) bottom is provided with cushion plate (10) and base plate (11), and wherein cushion plate (10) is connected with valve body (3), and the top is equipped with separator tube, and base plate (11) also is to be connected by bolt with valve body (3); Position indication component (9) then is located at the side of valve body (3) bottom.
2. the quick opening valve of a kind of double blinding tubular construction as claimed in claim 1 is characterized in that: when valve was connected with pipeline, medium flowed into blind pipe (7) under the normal state, and blind pipe is structure as a whole and keeps sealing reliably, and valve keeps closed condition; When requiring valve open, the drive unit of valve produces thrust, and the effect that piston (4) is subjected to thrust moves downward, at first break turnbuckle (5), then impingement sleeve (8) and cut off blind pipe (7) fast makes the medium conducting, and piston (4) rests on the bottom of piston cavity (2); The blind pipe end of cutting off simultaneously moves downward together with sleeve (8) always, rests on the cushion plate (10) of valve bottom the assembly that position indication component (9) outgoing position index signal and reliable locking are cut off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320056410 CN203230913U (en) | 2013-02-01 | 2013-02-01 | Quick-opening valve with double blind pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320056410 CN203230913U (en) | 2013-02-01 | 2013-02-01 | Quick-opening valve with double blind pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230913U true CN203230913U (en) | 2013-10-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320056410 Expired - Lifetime CN203230913U (en) | 2013-02-01 | 2013-02-01 | Quick-opening valve with double blind pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230913U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759051A (en) * | 2014-01-21 | 2014-04-30 | 大连大高阀门股份有限公司 | Sealing structure of explosion valve for nuclear power station |
| CN103775698A (en) * | 2014-01-21 | 2014-05-07 | 大连大高阀门股份有限公司 | Nuclear plant explosion valve with two-way sealing structure |
| CN103968121A (en) * | 2013-02-01 | 2014-08-06 | 中核苏阀科技实业股份有限公司 | Quick-opening valve of double-blind-tube structure |
| CN107940084A (en) * | 2016-10-12 | 2018-04-20 | 中核苏阀科技实业股份有限公司 | A kind of contactless valve location indicating mechanism |
-
2013
- 2013-02-01 CN CN 201320056410 patent/CN203230913U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968121A (en) * | 2013-02-01 | 2014-08-06 | 中核苏阀科技实业股份有限公司 | Quick-opening valve of double-blind-tube structure |
| CN103759051A (en) * | 2014-01-21 | 2014-04-30 | 大连大高阀门股份有限公司 | Sealing structure of explosion valve for nuclear power station |
| CN103775698A (en) * | 2014-01-21 | 2014-05-07 | 大连大高阀门股份有限公司 | Nuclear plant explosion valve with two-way sealing structure |
| CN107940084A (en) * | 2016-10-12 | 2018-04-20 | 中核苏阀科技实业股份有限公司 | A kind of contactless valve location indicating mechanism |
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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: 20131009 |