CN102606747A - Nuclear class I pneumatic stop valve - Google Patents
Nuclear class I pneumatic stop valve Download PDFInfo
- Publication number
- CN102606747A CN102606747A CN2010106109565A CN201010610956A CN102606747A CN 102606747 A CN102606747 A CN 102606747A CN 2010106109565 A CN2010106109565 A CN 2010106109565A CN 201010610956 A CN201010610956 A CN 201010610956A CN 102606747 A CN102606747 A CN 102606747A
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- valve
- pneumatic actuator
- rod
- pneumatic
- valve body
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Abstract
A nuclear class I pneumatic stop valve is characterized in that a valve body is in threaded connection with a valve bonnet, a spiral wound gasket is placed, a lip welding structure is arranged at the joint of the valve body and the valve bonnet, first belleville springs are arranged on a padding pressing plate, the valve is driven by a pneumatic device and can be opened and closed quickly within 10s, supporting columns are used for supporting the pneumatic device, a second belleville spring is arranged at the joint of a pneumatic device connecting rod and a valve rod, and a positioning pin is connected with the valve rod and a valve clack.
Description
Technical field
The present invention relates to a kind of stop valve, specifically be meant nuclear one-level pneumatic stopping valve.
Background technique
Conventional stop valve is made up of valve body, valve gap, flap, valve rod, middle flange bolt, Stem Mut and handwheel etc. usually, and flap and valve base sealing surface build-up welding cobalt base hard alloy, valve adopt handwheel or Electric actuator to drive.Valve body and valve gap link together through middle flange bolt; Rotate handwheel or start Electric actuator, drive Stem Mut and rotate, Stem Mut drives valve rod through trapezoidal thread and flap moves up and down; Thereby realize the opening and closing of valve, reach the effect of blocking-up and circulation medium.Because the valve working medium contains radioelement, guarantee that zero leaks, require the valve can fast opening and closing simultaneously, difficulty is bigger.
Summary of the invention
Defective in view of prior art exists the purpose of this invention is to provide a kind of nuclear one-level pneumatic stopping valve, and the valve body valve gap adopts screw thread to add the lip welding structure, uses Pneumatic actuator to drive valve.
For realizing above-mentioned purpose, the technical solution that the present invention adopted mainly is made up of valve body, valve gap, spirotallic gasket, hold-down grid, the first dish spring, Pneumatic actuator, supporting post, flap, valve rod, locating stud, the second dish spring, Pneumatic actuator connecting rod; It is characterized in that: valve body and valve gap are placed spirotallic gasket through being threaded, and at valve body and valve gap junction the lip welding structure are set; Hold-down grid is provided with the first dish spring; The driving of valve adopts Pneumatic actuator to drive, can 10s in fast opening and closing, supporting post supports Pneumatic actuator; Be provided with the second dish spring at Pneumatic actuator connecting rod and valve rod junction, locating stud is connected with flap with valve rod.
Description of drawings
Fig. 1 is a structure diagram of the present invention;
Fig. 2 is the partial view of valve rod and flap;
Fig. 3 is a valve body valve gap joint partial view;
Fig. 4 is the packing seal structure schematic representation under the dynamic load;
Fig. 5 is Pneumatic actuator connecting rod and valve rod junction partial view.
The reference character of Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 is following: valve body 1, valve gap 2, spirotallic gasket 3, hold-down grid 4, the first dish spring 5, Pneumatic actuator 6, supporting post 7, flap 8, valve rod 9, locating stud 10, the second dish spring 11, Pneumatic actuator connecting rod 12.
Embodiment
In the structure diagram of Fig. 1, Fig. 2, Fig. 3, Fig. 4, nuclear one-level pneumatic stopping valve shown in Figure 5; Its main structure comprises: valve body 1 and valve gap 2 are placed spirotallic gasket 3 through being threaded, and in valve body 1 and valve gap 2 junctions the lip welding structure are set; Hold-down grid 4 is provided with the first dish spring 5; The driving of valve adopts Pneumatic actuator 6 to drive, can 10s in fast opening and closing, supporting post 7 supports Pneumatic actuator 6; Be provided with the second dish spring 11 in Pneumatic actuator connecting rod 12 and valve rod 9 junctions, locating stud 10 is connected with flap 8 with valve rod 9.
Working principle of the present invention: this valve can be used for reactor coolant loop, safety injection system, waste heat guiding system, main steam system, change appearance system, nuclear power three wastes system of pressurized-water reactor nuclear power plant etc.As shown in Figure 1, its core component of nuclear one-level pneumatic stopping valve is Pneumatic actuator 6, valve rod 9, flap 8, land, valve body 1, valve gap 2; Working method is: Pneumatic actuator 6 drives land, and land moves up and down through thread belt ovable valve stem 9 and flap 8, thereby realizes the opening and closing of valve.Also can understand the open and close situation of valve through limit switch.
As shown in Figure 2, the flap 8 of nuclear one-level pneumatic stopping valve limits its relative valve rod 9 rotations through locating stud 10.Fixing with the flap gland through screw thread and flap 8, limit the motion to axial of flap 8 and valve rod 9.Like this, when valve rod 9 moved up and down, flap 8 can be with valve rod 9 motions.
As shown in Figure 3, adopt the sealing of stainless steel folder Expanded graphite spirotallic gasket between valve body 1 and the valve gap 2, and adopt lip weldering sealing configuration.Can be when gasket seal can not meet the demands with its sealing, weld seam allows to cut when maintenance.This sealing configuration reliable performance does not have influence under the temperature fluctuation condition, guarantee the elevated-temperature seal performance, makes medium not have any leaking outside.
As shown in Figure 4, nuclear one-level pneumatic stopping valve filler bolt place is added with the first dish spring 5, makes hold-down grid 4 to filler downward pressure arranged all the time through the filler gland, and the effectively loss of additional fillers bolt torque guarantees the sealing effect under long-time the use.Also can understand the compression situation of the first dish spring 5 through scale plate.
As shown in Figure 5; Valve is connected through land with Pneumatic actuator 6 transmissions, because valve requires to open and close in the 10s, and the fast opening and closing destruction that will inevitably impact to the sealing surface of valve; Should not use for a long time; Increase by the second dish spring 11 at the land place, can absorb impact energy effectively, the protection sealing surface.
Spirotallic gasket 3 all adopts graphite material with filler, and this material can guarantee the sealing effect under HTHP.
Valve seat, flap sealing surface weld deposit Stellite cemented carbide guarantee sealing effect, improve working life, guarantee that switch more than 2000 times, does not have scratch.
Claims (2)
1. nuclear one-level pneumatic stopping valve is characterized in that: be made up of valve body (1), valve gap (2), spirotallic gasket (3), hold-down grid (4), the first dish spring (5), Pneumatic actuator (6), supporting post (7), flap (8), valve rod (9), locating stud (10), the second dish spring (11), Pneumatic actuator connecting rod (12); Valve body (1) and valve gap (2) are placed spirotallic gasket through being threaded, and at valve body (1) and valve gap junction the lip welding structure are set; Hold-down grid (4) is provided with the first dish spring (5); The driving of valve adopts Pneumatic actuator (6) to drive, can 10s in fast opening and closing, supporting post (7) supports Pneumatic actuator; Be provided with the second dish spring (11) at Pneumatic actuator connecting rod (12) and valve rod junction, locating stud (10) is connected with flap (8) with valve rod (9).
2. according to claim 1 described nuclear one-level pneumatic stopping valve, it is characterized in that: said valve body (1), valve gap (2) adopt screw thread to add the lip welding structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106109565A CN102606747A (en) | 2010-12-29 | 2010-12-29 | Nuclear class I pneumatic stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106109565A CN102606747A (en) | 2010-12-29 | 2010-12-29 | Nuclear class I pneumatic stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102606747A true CN102606747A (en) | 2012-07-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106109565A Pending CN102606747A (en) | 2010-12-29 | 2010-12-29 | Nuclear class I pneumatic stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102606747A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519581A (en) * | 2018-12-17 | 2019-03-26 | 中国原子能科学研究院 | A kind of shut-off valve |
| CN111043342A (en) * | 2018-10-12 | 2020-04-21 | 中核苏阀科技实业股份有限公司 | Nuclear-grade pneumatic gate valve |
| CN111043319A (en) * | 2018-10-12 | 2020-04-21 | 中核苏阀科技实业股份有限公司 | Nuclear safety second-stage pneumatic stop valve |
| CN111043334A (en) * | 2018-10-12 | 2020-04-21 | 中核苏阀科技实业股份有限公司 | Nuclear safety first-stage pneumatic stop valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172170U (en) * | 1982-05-13 | 1983-11-17 | 株式会社本山製作所 | operation valve |
| CN2931986Y (en) * | 2006-06-07 | 2007-08-08 | 大连大高阀门有限公司 | Outside edge welding sealing structure of connecting nuclear grade valve gate and valve body with valve cover |
| CN101504088A (en) * | 2009-02-12 | 2009-08-12 | 白龙山 | Multifunctional general balance valve |
| CN201437850U (en) * | 2009-07-23 | 2010-04-14 | 浙江维都利阀门制造有限公司 | Harsh working condition resisting type special alloy plug valve |
-
2010
- 2010-12-29 CN CN2010106109565A patent/CN102606747A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172170U (en) * | 1982-05-13 | 1983-11-17 | 株式会社本山製作所 | operation valve |
| CN2931986Y (en) * | 2006-06-07 | 2007-08-08 | 大连大高阀门有限公司 | Outside edge welding sealing structure of connecting nuclear grade valve gate and valve body with valve cover |
| CN101504088A (en) * | 2009-02-12 | 2009-08-12 | 白龙山 | Multifunctional general balance valve |
| CN201437850U (en) * | 2009-07-23 | 2010-04-14 | 浙江维都利阀门制造有限公司 | Harsh working condition resisting type special alloy plug valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043342A (en) * | 2018-10-12 | 2020-04-21 | 中核苏阀科技实业股份有限公司 | Nuclear-grade pneumatic gate valve |
| CN111043319A (en) * | 2018-10-12 | 2020-04-21 | 中核苏阀科技实业股份有限公司 | Nuclear safety second-stage pneumatic stop valve |
| CN111043334A (en) * | 2018-10-12 | 2020-04-21 | 中核苏阀科技实业股份有限公司 | Nuclear safety first-stage pneumatic stop valve |
| CN109519581A (en) * | 2018-12-17 | 2019-03-26 | 中国原子能科学研究院 | A kind of shut-off valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Ganjingzi District of Dalian City, Liaoning province 116037 Yaojia Road No. 272 Applicant after: Dalian DV Valve Co., Ltd. Address before: Ganjingzi District of Dalian City, Liaoning province 116037 Yaojia Road No. 272 Applicant before: Dalian DV Valve Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: DALIAN DAGAO VALVE CO., LTD. TO: DALIAN DV VALVE CO., LTD. |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120725 |