CN111043334A - Nuclear safety first-stage pneumatic stop valve - Google Patents
Nuclear safety first-stage pneumatic stop valve Download PDFInfo
- Publication number
- CN111043334A CN111043334A CN201811188741.1A CN201811188741A CN111043334A CN 111043334 A CN111043334 A CN 111043334A CN 201811188741 A CN201811188741 A CN 201811188741A CN 111043334 A CN111043334 A CN 111043334A
- Authority
- CN
- China
- Prior art keywords
- valve
- safety
- gap
- pneumatic
- clack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000005242 forging Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 230000001133 acceleration Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Abstract
The invention belongs to the invention, and particularly relates to a forged steel stop valve which is applied to a Hualong I, has a first-grade nuclear safety, meets the 1A-class requirement on earthquake resistance, and is in threaded connection with a body cover by adopting a pneumatic actuating mechanism. The utility model provides a nuclear safety one-level pneumatic stop valve, includes valve body, valve gap, valve clack, valve rod, support, dish spring and pneumatic actuator, wherein the top of valve body sets up the valve gap, sets up the valve clack on the valve gap, contains "it" font passageway in the valve body, sets up the valve rod in the passageway, the top and the support fixed connection of valve rod, the support passes the valve gap and is connected with the valve clack. The invention has the following remarkable effects: (1) the forged piece form is adopted, the body cover is connected to the stop valve with a large nut structure, and the gasket and lip welding structure is adopted to ensure higher reliability and safety of the valve. (2) The valve rod live load, guide and limit sealing structure is designed, dynamic compensation of the filler pre-tightening load is realized, and the sealing requirement under multiple working conditions is met. (3) Corresponding supporting structures are designed, and the requirements of 6g seismic acceleration in three directions are met. (4) And a safety-level pneumatic device is adopted, so that the safety requirement is met.
Description
Technical Field
The invention belongs to the invention, and particularly relates to a forged steel stop valve which is applied to a Hualong I, has a first-grade nuclear safety, meets the 1A-class requirement on earthquake resistance, and is in threaded connection with a body cover by adopting a pneumatic actuating mechanism.
Background
"Hualongyi" is the third generation nuclear power machine type which is researched and designed by adopting the international highest safety standard, and the safety performance index of the Hualongyi reaches the advanced level of the international third generation nuclear power technology.
The 'Hualong I' nuclear safety first-stage pneumatic stop valve is used in chemical and volume control system of nuclear power station. The valve consists of two main parts: the valve comprises a valve body including a pressure-bearing shell and a valve clack, an actuating mechanism, a control system and accessories thereof. The valve is a key valve of the nuclear power station, and can replace an import valve after being successfully researched and developed so as to meet the requirement of the localization of nuclear power station equipment.
The Hualong I nuclear safety first-level pneumatic stop valve adopts a pneumatic actuating mechanism to control the opening and closing actions of the valve. The pneumatic actuator has heavier weight and larger appearance and eccentric size compared with the valve body, and the whole valve needs to meet the anti-seismic requirements of anti-seismic 1A class and 6g acting in three directions, namely, the pneumatic actuator provides high requirements for ensuring the anti-seismic performance of the valve.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a first-level pneumatic stop valve for nuclear safety.
The invention is realized by the following steps: the utility model provides a nuclear safety one-level pneumatic stop valve, includes valve body, valve gap, valve clack, valve rod, support, dish spring and pneumatic actuator, wherein the top of valve body sets up the valve gap, sets up the valve clack on the valve gap, contains "it" font passageway in the valve body, sets up the valve rod in the passageway, the top and the support fixed connection of valve rod, the support passes the valve gap and is connected with the valve clack.
The nuclear safety primary pneumatic stop valve is characterized in that the valve clack is arranged on the valve seat, and the valve clack is arranged on the valve seat.
The first-stage pneumatic stop valve for nuclear safety is characterized in that a disc spring is arranged between a pneumatic actuating mechanism and the valve clack.
According to the nuclear safety primary pneumatic stop valve, the valve body and the valve cover are in the forged piece form, the valve body and the valve cover are connected to form the stop valve with the large nut structure, and the structure that the gasket and the lip are welded is adopted, so that the higher reliability and safety of the valve are guaranteed.
The first-level nuclear safety pneumatic stop valve is characterized in that a gap is formed between the valve clack and the valve cover.
The invention has the following remarkable effects: (1) the forged piece form is adopted, the body cover is connected to the stop valve with a large nut structure, and the gasket and lip welding structure is adopted to ensure higher reliability and safety of the valve. (2) The valve rod live load, guide and limit sealing structure is designed, dynamic compensation of the filler pre-tightening load is realized, and the sealing requirement under multiple working conditions is met. (3) Corresponding supporting structures are designed, and the requirements of 6g seismic acceleration in three directions are met. (4) And a safety-level pneumatic device is adopted, so that the safety requirement is met.
Drawings
FIG. 1 is a structural diagram of a nuclear safety primary pneumatic stop valve for Hualong I;
in the figure: 1. a valve body; 2. a valve cover; 3. a support; 4. a valve flap; 5. a valve stem; 6. a disc spring; 7. and a pneumatic actuator.
Detailed Description
As shown in the attached figure 1, the nuclear safety one-level pneumatic stop valve comprises a valve body, a valve cover, a valve clack, a valve rod, a support, a disc spring and a pneumatic execution mechanism, wherein the valve cover is arranged at the top end of the valve body, the valve clack is arranged on the valve cover, a channel shaped like a Chinese character 'zhi' is arranged in the valve body, the valve rod is arranged in the channel, the top end of the valve rod is fixedly connected with the support, and the support penetrates through the valve cover to be connected.
And a pneumatic actuating mechanism is arranged above the valve clack.
A disc spring is arranged between the pneumatic actuating mechanism and the valve clack.
The valve body and the valve cover are in a forged piece form, the body cover is connected with the stop valve in a large nut structure, and a gasket and lip welding structure is adopted, so that the higher reliability and safety of the valve are guaranteed. The valve rod is designed with a valve rod live load, guiding and limiting sealing structure, so that the dynamic compensation of the pre-tightening load of the packing is realized, and the sealing requirement under multiple working conditions is met. The valve adopts a safety pneumatic device, the valve is heavier in weight and larger in appearance and eccentric size compared with a valve body, the whole valve needs to meet the anti-seismic requirements of anti-seismic 1A class and 6g in three directions, namely, the valve has high requirements on the anti-seismic performance, and a corresponding supporting structure is designed to meet the anti-seismic requirements of anti-seismic 1A class and 6g in three directions.
Claims (7)
1. The utility model provides a first-class pneumatic stop valve of nuclear safety which characterized in that: including valve body (1), valve gap (2), valve clack (3), valve rod (4), support (5), dish spring (6) and pneumatic actuator (7), wherein the top of valve body (1) sets up valve gap (2), sets up valve clack (3) on valve gap (2), contains "it" font passageway in valve body (1), sets up valve rod (4) in the passageway, the top and support (5) fixed connection of valve rod (4), and support (5) pass valve gap (2) and are connected with valve clack (3).
2. A nuclear safety primary pneumatic stop valve as claimed in claim 1, wherein: a pneumatic actuator (7) is arranged above the valve flap (3).
3. A nuclear safety primary pneumatic stop valve as claimed in claim 2, wherein: a disc spring (6) is arranged between the pneumatic actuating mechanism (7) and the valve clack (3).
4. A nuclear safety primary pneumatic stop valve as claimed in claim 3, wherein: the valve body (1) and the valve cover (2) adopt a forging form, the valve body (1) and the valve cover (2) are connected into a stop valve with a large nut structure, and a gasket and lip welding structure is adopted, so that the higher reliability and safety of the valve are ensured.
5. The primary pneumatic shut-off valve for nuclear safety as recited in claim 4, wherein: a gap is arranged between the valve clack and the valve cover.
6. A nuclear safety primary pneumatic stop valve as claimed in claim 3, wherein: the valve body (1) and the valve cover (2) are connected to form a stop valve with a large nut structure, and a gasket and lip welding structure is adopted, so that the higher reliability and safety of the valve are guaranteed.
7. The primary pneumatic shut-off valve for nuclear safety as recited in claim 5, wherein: a gap is arranged between the valve clack and the valve cover, and the size of the gap is proper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188741.1A CN111043334A (en) | 2018-10-12 | 2018-10-12 | Nuclear safety first-stage pneumatic stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188741.1A CN111043334A (en) | 2018-10-12 | 2018-10-12 | Nuclear safety first-stage pneumatic stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111043334A true CN111043334A (en) | 2020-04-21 |
Family
ID=70229655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811188741.1A Pending CN111043334A (en) | 2018-10-12 | 2018-10-12 | Nuclear safety first-stage pneumatic stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111043334A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070918A (en) * | 2006-05-12 | 2007-11-14 | 中核苏阀科技实业股份有限公司 | Nulcear-cascade pressure stabilizer electric pressure-release valve |
| CN101586670A (en) * | 2008-05-20 | 2009-11-25 | 核电秦山联营有限公司 | Nuclear second-stage electric V-shaped brake valve |
| CN201487266U (en) * | 2009-05-25 | 2010-05-26 | 中核苏阀科技实业股份有限公司 | Parallel seat gate valve |
| CN102606750A (en) * | 2010-12-29 | 2012-07-25 | 大连大高阀门有限公司 | Nuclear class I electric cobalt-free modularized stop valve |
| CN102606747A (en) * | 2010-12-29 | 2012-07-25 | 大连大高阀门有限公司 | Nuclear class I pneumatic stop valve |
| CN102606748A (en) * | 2010-12-29 | 2012-07-25 | 大连大高阀门有限公司 | Nuclear class II film pneumatic bellows stop valve |
| CN104089063A (en) * | 2014-07-29 | 2014-10-08 | 温州大学 | Nuclear grade gate valve |
| CN108361423A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | The electronic bellows angle type stop check valve of core level-one heavy caliber |
-
2018
- 2018-10-12 CN CN201811188741.1A patent/CN111043334A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070918A (en) * | 2006-05-12 | 2007-11-14 | 中核苏阀科技实业股份有限公司 | Nulcear-cascade pressure stabilizer electric pressure-release valve |
| CN101586670A (en) * | 2008-05-20 | 2009-11-25 | 核电秦山联营有限公司 | Nuclear second-stage electric V-shaped brake valve |
| CN201487266U (en) * | 2009-05-25 | 2010-05-26 | 中核苏阀科技实业股份有限公司 | Parallel seat gate valve |
| CN102606750A (en) * | 2010-12-29 | 2012-07-25 | 大连大高阀门有限公司 | Nuclear class I electric cobalt-free modularized stop valve |
| CN102606747A (en) * | 2010-12-29 | 2012-07-25 | 大连大高阀门有限公司 | Nuclear class I pneumatic stop valve |
| CN102606748A (en) * | 2010-12-29 | 2012-07-25 | 大连大高阀门有限公司 | Nuclear class II film pneumatic bellows stop valve |
| CN104089063A (en) * | 2014-07-29 | 2014-10-08 | 温州大学 | Nuclear grade gate valve |
| CN108361423A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | The electronic bellows angle type stop check valve of core level-one heavy caliber |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200421 |
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| RJ01 | Rejection of invention patent application after publication |