CN111043342A - Nuclear-grade pneumatic gate valve - Google Patents
Nuclear-grade pneumatic gate valve Download PDFInfo
- Publication number
- CN111043342A CN111043342A CN201811188445.1A CN201811188445A CN111043342A CN 111043342 A CN111043342 A CN 111043342A CN 201811188445 A CN201811188445 A CN 201811188445A CN 111043342 A CN111043342 A CN 111043342A
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- pneumatic
- nuclear
- gate valve
- 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
- 239000000945 filler Substances 0.000 claims abstract description 6
- 230000001133 acceleration Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 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
- 230000035939 shock Effects 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
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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
-
- 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 a pneumatic gate valve, and particularly relates to a nuclear-grade pneumatic gate valve. The utility model provides a nuclear-grade pneumatic gate valve, sets up the valve gap on the valve body of lower extreme, sets up pneumatic actuator on the valve gap, and pneumatic actuator center sets up the connecting rod, connecting rod and valve rod fixed connection set up flashboard frame flashboard in the inside flashboard frame flashboard that sets up of valve body, sets up the flashboard on the flashboard frame, still sets up the filler on the valve gap. The invention has the following remarkable effects: the wedge phenomenon can not occur, the axial force of opening and closing the valve can be effectively reduced, the weight and the volume of a pneumatic actuating mechanism are reduced, the whole weight and the height of the valve are reduced, a valve rod live load, guide and limiting sealing structure is designed at the position of the valve rod, the dynamic compensation of the filler pre-tightening load is realized, and the sealing requirement under multiple working conditions is met. The driving mechanism adopts a safety-level pneumatic actuator, and the authentication level is K3. When the valve is installed, a corresponding supporting structure can be additionally arranged, and the anti-seismic requirements of 1A type of anti-seismic and 6g in three directions are met.
Description
Technical Field
The invention belongs to a pneumatic gate valve, and particularly relates to a nuclear-grade pneumatic gate valve which is safe in two or three stages, meets the requirement of earthquake resistance 1A, and adopts 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.
A plurality of gate valves are required to be used in the Hualong I. The existing pneumatic gate valve has simple structure and poor shock resistance, and can not meet the actual requirement of Hualong I. And the high-end valve still needs to rely on an inlet. Therefore, the development of a nuclear-grade pneumatic gate valve with independent intellectual property rights in China is urgently needed.
Disclosure of Invention
The invention aims to provide a nuclear-grade pneumatic gate valve aiming at the defects of the prior art.
The invention is realized by the following steps: the utility model provides a nuclear-grade pneumatic gate valve, sets up the valve gap on the valve body of lower extreme, sets up pneumatic actuator on the valve gap, and pneumatic actuator center sets up the connecting rod, connecting rod and valve rod fixed connection set up flashboard frame flashboard in the inside flashboard frame flashboard that sets up of valve body, sets up the flashboard on the flashboard frame, still sets up the filler on the valve gap.
According to the nuclear-grade pneumatic gate valve, the valve body, the valve cover and the pneumatic actuating mechanism are integrally connected through the middle flange studs.
According to the nuclear-grade pneumatic gate valve, the flashboard is of a spring type parallel double-flashboard structure, the structure cannot generate a wedging phenomenon at high temperature, the axial force for opening and closing the valve can be effectively reduced, and the weight and the volume of a pneumatic actuating mechanism are reduced.
The nuclear-grade pneumatic gate valve is characterized in that the valve body is provided with a valve cover, the valve body is provided with a valve seat, and the valve seat is provided with a valve seat.
According to the nuclear-grade pneumatic gate valve, the whole valve is additionally provided with the supporting structure, and the supporting strength is based on the requirement of meeting 6g earthquake acceleration in three directions.
The nuclear-grade pneumatic gate valve is characterized in that the pneumatic actuator adopts a safety-grade pneumatic actuator structure.
The invention has the following remarkable effects: the pressure-bearing shell, the flashboard and the valve rod adopt a forged piece or casting structure. The flashboard adopts a spring type parallel double-flashboard structure, the wedge phenomenon cannot occur under high temperature, the axial force for opening and closing the valve can be effectively reduced, and the weight and the volume of the pneumatic actuating mechanism are reduced. The valve body, the valve cover and the pneumatic actuating mechanism are integrally connected by adopting a middle flange stud, a bracket part is removed, and the overall weight and height of the valve are reduced. 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 driving mechanism adopts a safety-level pneumatic actuator, and the authentication level is K3. When the valve is installed, a corresponding supporting structure can be additionally arranged, and the anti-seismic requirements of 1A type of anti-seismic and 6g in three directions are met.
Drawings
FIG. 1 is a schematic cross-sectional view of a nuclear-grade pneumatic gate valve;
FIG. 2 is a schematic cross-sectional view of another nuclear-grade pneumatic gate valve configuration;
in the figure: 1. a valve body; 2. a valve cover; 3. a shutter plate; 4. a gate plate frame; 5. a valve stem; 6. a filler; 7. and a pneumatic actuator.
Detailed Description
As shown in attached figures 1-2, the nuclear-grade pneumatic gate valve is characterized in that a valve cover is arranged on a valve body at the lowest end, a pneumatic actuating mechanism is arranged on the valve cover, a connecting rod is arranged at the center of the pneumatic actuating mechanism and fixedly connected with a valve rod, a gate plate frame gate plate is arranged inside the valve body, a gate plate is arranged on the gate plate frame, and a filler is further arranged on the valve cover.
The valve body, the valve cover and the pneumatic actuating mechanism are integrally connected by adopting a middle flange stud.
The flashboard is a spring type parallel double-flashboard structure, the structure can not generate a wedging phenomenon at high temperature, the axial force for opening and closing the valve can be effectively reduced, and the weight and the volume of the pneumatic actuating mechanism are reduced.
The joint of the valve rod and the valve cover is provided with an upper seal, and the joint of the valve body and the flashboard is provided with a valve seat seal.
A supporting structure is additionally arranged outside the whole valve, and the supporting strength meets the standard of 6g earthquake acceleration in three directions.
The pneumatic actuating mechanism adopts a safety-level pneumatic actuating structure.
The nuclear-grade pneumatic gate valve for the Hualong I is composed of two main parts: the pneumatic control valve comprises a valve body including a pressure-bearing shell, a flashboard and a valve rod, a pneumatic actuating mechanism and corresponding control 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 nuclear-grade pneumatic gate valve for Hualong I controls the opening and closing actions of the valve by adopting a pneumatic actuating mechanism. 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 requirement of 6g acting in three directions of anti-seismic 1A type, which provides high requirement for the anti-seismic performance of the valve.
The valve body, the valve cover and the pneumatic actuating mechanism of the valve are integrally connected through the middle flange and the stud, a support part is removed, the overall weight and height of the valve are reduced, and meanwhile, the supporting device is additionally arranged, so that the pneumatic gate valve can meet the anti-seismic requirement.
Claims (7)
1. The utility model provides a nuclear level pneumatic gate valve which characterized in that: the pneumatic valve is characterized in that a valve cover (2) is arranged on a valve body (1) at the lowest end, a pneumatic actuating mechanism (7) is arranged on the valve cover (2), a connecting rod is arranged at the center of the pneumatic actuating mechanism (7) and fixedly connected with a valve rod (5), a flashboard frame (4) and a flashboard (3) are arranged inside the valve body (1), the flashboard (3) is arranged on the flashboard frame (4), and a filler (6) is further arranged on the valve cover (2).
2. The nuclear grade pneumatic gate valve of claim 1, wherein: the valve body (1), the valve cover (2) and the pneumatic actuating mechanism (7) are integrally connected by adopting a middle flange stud.
3. The nuclear grade pneumatic gate valve of claim 2, wherein: the flashboard (3) is of a spring type parallel double-flashboard structure, the structure cannot generate a wedging phenomenon at high temperature, the axial force for opening and closing the valve can be effectively reduced, and the weight and the volume of the pneumatic actuating mechanism are reduced.
4. A nuclear grade pneumatic gate valve as claimed in claim 3, wherein: the joint of the valve rod (5) and the valve cover (2) is provided with an upper seal, and the joint of the valve body (1) and the flashboard (3) is provided with a valve seat seal.
5. The nuclear grade pneumatic gate valve of claim 4, wherein: a supporting structure is additionally arranged outside the whole valve, and the supporting strength meets the standard of 6g earthquake acceleration in three directions.
6. The nuclear grade pneumatic gate valve of claim 5, wherein: the pneumatic actuating mechanism (7) adopts a safety-level pneumatic actuating structure.
7. The nuclear grade pneumatic gate valve of claim 6, wherein: the support strength is normalized to satisfy 6g seismic acceleration in three directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188445.1A CN111043342A (en) | 2018-10-12 | 2018-10-12 | Nuclear-grade pneumatic gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811188445.1A CN111043342A (en) | 2018-10-12 | 2018-10-12 | Nuclear-grade pneumatic gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111043342A true CN111043342A (en) | 2020-04-21 |
Family
ID=70229668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811188445.1A Pending CN111043342A (en) | 2018-10-12 | 2018-10-12 | Nuclear-grade pneumatic gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111043342A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2816516Y (en) * | 2005-08-31 | 2006-09-13 | 黄作兴 | Nuclear-electric sluice valve |
| CN200975505Y (en) * | 2006-09-08 | 2007-11-14 | 陈世修 | Pneumatic brake valve with boosting unlock function |
| 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 |
| CN201568595U (en) * | 2009-12-01 | 2010-09-01 | 南通国电电站阀门有限公司 | Inner wedge support type parallel double-flashboard gate 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 |
| CN104089063A (en) * | 2014-07-29 | 2014-10-08 | 温州大学 | Nuclear grade gate valve |
| CN204477349U (en) * | 2014-12-30 | 2015-07-15 | 挺宇集团有限公司 | Pneumatic double-acting high-pressure self-sealing parallel double-flashboard gate valve |
-
2018
- 2018-10-12 CN CN201811188445.1A patent/CN111043342A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2816516Y (en) * | 2005-08-31 | 2006-09-13 | 黄作兴 | Nuclear-electric sluice valve |
| 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 |
| CN200975505Y (en) * | 2006-09-08 | 2007-11-14 | 陈世修 | Pneumatic brake valve with boosting unlock function |
| CN201568595U (en) * | 2009-12-01 | 2010-09-01 | 南通国电电站阀门有限公司 | Inner wedge support type parallel double-flashboard gate 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 |
| CN104089063A (en) * | 2014-07-29 | 2014-10-08 | 温州大学 | Nuclear grade gate valve |
| CN204477349U (en) * | 2014-12-30 | 2015-07-15 | 挺宇集团有限公司 | Pneumatic double-acting high-pressure self-sealing parallel double-flashboard gate valve |
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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 |