CN102359603B - Pressure resistance valve for nuclear grade air passage - Google Patents
Pressure resistance valve for nuclear grade air passage Download PDFInfo
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- CN102359603B CN102359603B CN 201110262200 CN201110262200A CN102359603B CN 102359603 B CN102359603 B CN 102359603B CN 201110262200 CN201110262200 CN 201110262200 CN 201110262200 A CN201110262200 A CN 201110262200A CN 102359603 B CN102359603 B CN 102359603B
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Abstract
The invention relates to a pressure resistance valve for a nuclear grade air passage, which is used in a ventilation system of a nuclear power station and comprises a valve body, a valve seat, blades, an automatic blade reset mechanism of the blades and an emergency protection mechanism, wherein the blades and the automatic blade reset mechanism of the blades comprise more than three blades in vertical arrangement, and rotating shafts, a rocker arm and a pair of symmetrical left and right reset sub mechanisms corresponding to each blade, the valve seat comprises an upper sealing valve seat, a lower sealing valve seat and a side sealing seat, the emergency protection mechanism comprises an electric device and an electric fitting rocker bar, the electric device is fixed on a steel plate welded on the valve body through screw bolts, the electric rocker bar is arranged on an output shaft of the electric device, and one end of the electric fitting rocker bar presses the upper end of a connecting rod when the electric fitting rocker bar leftwards rotates for 90 degrees. The structure is simple, the action is flexible, the emergency protection capability is realized, and the back ventilation system can be ensured not to be damaged when pipe bursting accidents occur in a cabin chamber of the nuclear power station, so the ventilation requirement of the nuclear power station is met.
Description
Technical field
The present invention relates to a kind of nuclear level air channel damping valve, be used for the exhaust system of nuclear power station, be used to guarantee that the nuclear power station cabin takes place to break when running affairs event, guarantee can not damage the exhaust system of back.
Background technique
Employed similar valve comprises valve body, valve seat and blade resetting-mechanism in the nuclear power station abroad; But it does not have emergency protection mechanism; In case during the radioactive air in the big blower fan behind the Open valve is further extracted pipe out, this moment, valve front and back pressure reduction increased, and surpassed the closing pressure of valve; Thereby cause valve to be compelled to close, influence its proper functioning.The valve of this structure can not satisfy the requirement of nuclear power station to exhaust system.
Summary of the invention
The technical problem that the present invention will solve provides a kind of nuclear level air channel damping valve with emergency protection ability.
For solving the problems of the technologies described above, the technological scheme that the present invention taked is: a kind of nuclear level air channel damping valve is characterized in that: comprise valve body, valve seat, blade and automatic reset mechanism thereof and emergency protection mechanism; Said blade and automatic reset mechanism thereof comprise the blade that is arranged above and below more than 3; The left and right resetting sub mechanism of the pairing rotating shaft of each blade, rocking arm and a pair of symmetry; Said blade pass is crossed and is bolted in its corresponding rotating shaft, and the two end part of said rotating shaft are installed on the shaft seating that is fixed on the valve body through bearing and bearing cap; The two ends of said rotating shaft are fixedly connected with an end of corresponding rocking arm through key respectively; The structure of said left and right resetting sub mechanism is identical; Said left resetting sub mechanism is made up of connecting rod, connecting rod caging bolt, connecting rod position limit socket, spring seat, spring adjustable lever and spring seat; Said connecting rod is hinged with the other end of the rocking arm that is positioned at each rotating shaft one end respectively through bearing pin; The lower end of said connecting rod withstands on the upper end of connecting rod caging bolt, and said connecting rod caging bolt is connected with the connecting rod position limit socket through nut, and said connecting rod position limit socket is fixed on the valve body; The upper end of said spring hangs on the journal stirrup that is positioned at connecting rod top one side; The lower end of spring is hooked in the upper end of spring adjustable lever, and the lower end of said spring adjustable lever is connected with spring seat through adjusting nut, and spring seat is fixed on the valve body;
Said valve seat comprises upper and lower seal valve seat and side sealing valve seat; When valve cuts out; Upper and lower blade and intermediate blade lean against respectively on the upper and lower seal valve seat with the side sealing valve seat on and sealing, said upper and lower seal valve seat and side sealing valve seat are welded on respectively on the upper and lower inwall of valve body and on the side inwall;
Said emergency protection mechanism comprises Electric actuator and Denso rocking bar; Said Electric actuator is through being bolted on the steel plate that is welded on the valve body; Said Denso rocking bar is installed on the output shaft of Electric actuator, and when Denso rocking bar left during half-twist, an end of Denso rocking bar is pushed down the upper end of connecting rod.
Adopt the beneficial effect that technique scheme produced to be: simple in structure, flexible movements have the emergency protection ability, can guarantee that the nuclear power station cabin takes place to break when running affairs event, can not damage the exhaust system of back, thereby satisfy the requirement of nuclear power station to air draft.
Description of drawings
Fig. 1 is a plan view of the present invention;
Fig. 2 removes the left view of Electric actuator for Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is the B-B sectional view of Fig. 1;
Fig. 5 is the partial enlarged drawing I of Fig. 3;
Fig. 6 is the partial enlarged drawing II of Fig. 3;
Fig. 7 is the partial enlarged drawing III of Fig. 2;
Fig. 8 is the partial enlarged drawing IV of Fig. 1;
Fig. 9 is the partial enlarged drawing V of Fig. 2;
In Fig. 1～9,1 valve body, 2 blades, 3 rotating shafts, 4 bolts, 5 rocking arms; 6 connecting rods, 7 bearing pins, 8 springs, 9 spring adjustable levers, 10 adjusting nuts, 11 spring seats; 12 connecting rod caging bolts, 13 connecting rod position limit sockets, 14 Electric actuators, 15 Denso rocking bars, 16 upper sealing valve seats, 17 side sealing valve seats; 18 lower seal valve seats, 19 bearing caps, 20 pads, 21 shaft seatings, 22 bearings.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Embodiment by shown in Fig. 1～9 can know that present embodiment comprises valve body 1, valve seat, blade and automatic reset mechanism thereof and emergency protection mechanism; Said blade and automatic reset mechanism thereof comprise the blade that is arranged above and below 2 (in the present embodiment, the quantity of blade is 5) more than 3.The left and right resetting sub mechanism of the pairing rotating shaft of each blade 3, Rocker arm 5 and a pair of symmetry; Said blade 2 is fixed in its corresponding rotating shaft 3 through bolt 4, and the two end part of said rotating shaft 3 are installed on the shaft seating 21 that is fixed on the valve body 1 through bearing 22 and bearing cap 19; The two ends of said rotating shaft 3 are fixedly connected with an end of corresponding Rocker arm 5 through key respectively; The structure of said left and right resetting sub mechanism is identical; Said left resetting sub mechanism is made up of connecting rod 6, connecting rod caging bolt 12, connecting rod position limit socket 13, spring seat 8, spring adjustable lever 9 and spring seat 11; Said connecting rod 6 is hinged with the other end of the Rocker arm 5 that is positioned at each rotating shaft 3 one end respectively through bearing pin 7; The lower end of said connecting rod 6 withstands on the upper end of connecting rod caging bolt 12, and said connecting rod caging bolt 12 is connected with connecting rod position limit socket 13 through nut, and said connecting rod position limit socket 13 is fixed on the valve body 1; The upper end of said spring 8 hangs on the journal stirrup that is positioned at connecting rod 6 tops one side; The lower end of spring 8 is hooked in the upper end of spring adjustable lever 9, and the lower end of said spring adjustable lever 9 is connected with spring seat 11 through adjusting nut 10, and spring seat 11 is fixed on the valve body 1;
Said valve seat comprises upper sealing valve seat 16, lower seal valve seat 18 and side sealing valve seat 17; When valve cuts out; Upper and lower blade and intermediate blade lean against respectively on upper sealing valve seat 16, lower seal valve seat 18 and the side sealing valve seat 17 and sealing, and said upper sealing valve seat 16, lower seal valve seat 18 and side sealing valve seat 17 are welded on respectively on the upper and lower inwall of valve body 1 and on the side inwall;
Said emergency protection mechanism comprises Electric actuator 14 and Denso rocking bar 15; Said Electric actuator 14 is through being bolted on the steel plate that is welded on the valve body 1; Said Denso rocking bar 15 is installed on the output shaft of Electric actuator 14; When Denso rocking bar 15 left during half-twist, an end of Denso rocking bar 15 is pushed down the upper end of connecting rod 6.
Stud with rubber weather strip on said upper sealing valve seat 16, lower seal valve seat 18 and the side sealing valve seat 17.
The working procedure of present embodiment is following: when the cabin of nuclear power station take place broken run affairs thus the time; In the air channel along airflow direction one lasting surge pressure (this pressure>=valve closing pressure P) can appear suddenly; Blade 2 receives the effect of gas compression shock power, is rotated counterclockwise 45 ° of overlap joints on upper and lower and side sealing valve seat (referring to Fig. 3), throttle down; The impact failure of equipment in the ventilation system after stoping impact force to valve; Along with system pressure constantly reduces, when impact force is returned to normal pressure (the cracking pressure N of this pressure≤valve), spring 8 pulling connecting rods 6, Rocker arm 5, rotating shaft 3; Drive blade 2 and turn clockwise, return to the opening state (see figure 3).Radioactive air in the pipe during for discharge accident as early as possible, the big blower fan of valve back is opened and is bled, and this moment, valve front and back pressure reduction increased the closing pressure P that can surpass valve; In order not allow valve closing, open Electric actuator 14 earlier, its drive Denso rocking bar 15 is rotated counterclockwise pushes down connecting rod 6; Prevent that Rocker arm 5, rotating shaft 3, blade 2 are rotated counterclockwise and close, and after system's radioactive air has been arranged, close big blower fan; Restart Electric actuator 14; Make Denso rocking bar 15 rotate to upwards position (see figure 9), no longer influence the action of connecting rod 6, valve is in the state that automatically resets normally.
Claims (2)
1. a nuclear level air channel damping valve is characterized in that: comprise valve body (1), valve seat, blade and automatic reset mechanism and emergency protection mechanism; Said blade and automatic reset mechanism thereof comprise the blade that is arranged above and below (2) more than 3; The left and right resetting sub mechanism of the pairing rotating shaft of each blade (3), rocking arm (5) and a pair of symmetry; Said blade (2) is fixed in its corresponding rotating shaft (3) through bolt (4), and the two end part of said rotating shaft (3) are installed on the shaft seating (21) that is fixed on the valve body (1) through bearing (22) and bearing cap (19); The two ends of said rotating shaft (3) are fixedly connected with an end of corresponding rocking arm (5) through key respectively; The structure of said left and right resetting sub mechanism is identical; Said left resetting sub mechanism is made up of connecting rod (6), connecting rod caging bolt (12), connecting rod position limit socket (13), spring (8), spring adjustable lever (9) and spring seat (11); Said connecting rod (6), hinged with the other end of the rocking arm (5) that is positioned at each rotating shaft (3) one end respectively through bearing pin (7); The lower end of said connecting rod (6) withstands on the upper end of connecting rod caging bolt (12); Said connecting rod caging bolt (12) is connected with connecting rod position limit socket (13) through nut; Said connecting rod position limit socket (13) is fixed on the valve body (1), and the upper end of said spring (8) hangs on the journal stirrup that is positioned at connecting rod (6) top one side, and the lower end of spring (8) is hooked in the upper end of spring adjustable lever (9); The lower end of said spring adjustable lever (9) is connected with spring seat (11) through adjusting nut (10), and spring seat (11) is fixed on the valve body (1);
Said valve seat comprises upper and lower seal valve seat (16,18) and side sealing valve seat (17); When valve cuts out; Upper and lower blade and intermediate blade lean against upper and lower seal valve seat (16,18) respectively and go up with side sealing valve seat (17) and go up and sealing, and said upper and lower seal valve seat (16,18) and side sealing valve seat (17) are welded on respectively on the upper and lower inwall of valve body (1) and on the side inwall;
Said emergency protection mechanism comprises Electric actuator (14) and Denso rocking bar (15); Said Electric actuator (14) is through being bolted on the steel plate that is welded on the valve body (1); Said Denso rocking bar (15) is installed on the output shaft of Electric actuator (14); When Denso rocking bar (15) left during half-twist, an end of Denso rocking bar (15) is pushed down the upper end of connecting rod (6).
2. nuclear polar wind according to claim 1 road damping valve is characterized in that: stud with rubber weather strip on said upper and lower seal valve seat (16,18) and the side sealing valve seat (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110262200 CN102359603B (en) | 2011-09-06 | 2011-09-06 | Pressure resistance valve for nuclear grade air passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110262200 CN102359603B (en) | 2011-09-06 | 2011-09-06 | Pressure resistance valve for nuclear grade air passage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102359603A CN102359603A (en) | 2012-02-22 |
| CN102359603B true CN102359603B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110262200 Active CN102359603B (en) | 2011-09-06 | 2011-09-06 | Pressure resistance valve for nuclear grade air passage |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574138B (en) * | 2013-11-12 | 2016-01-20 | 南方风机股份有限公司 | The quick separating valve of the low leakage of safe level |
| CN103883746A (en) * | 2014-04-08 | 2014-06-25 | 南通大通宝富风机有限公司 | High-temperature-resistant and irradiation-resistant air valve with elastic metal pieces |
| CN105422943A (en) * | 2015-11-30 | 2016-03-23 | 浙江聚英风机工业有限公司 | Single-blade and high-sealing exhaust ventilation fireproof valve |
| CN105351540B (en) * | 2015-12-18 | 2017-12-26 | 点夺机电工程江苏有限公司 | A kind of closed air-valve of multiple-blade |
| CN112460781A (en) * | 2020-11-30 | 2021-03-09 | 珠海格力电器股份有限公司 | Air outlet grille control method and air conditioner |
| CN114183544B (en) * | 2022-02-17 | 2022-09-06 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Be used for large-scale environment wind-tunnel high temperature pivot dynamic seal rotation link mechanism subassembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020423A (en) * | 1990-07-20 | 1991-06-04 | Mestek, Inc. | Rotating blade damper with blade lock and stop mechanism |
| CN101430011A (en) * | 2008-09-18 | 2009-05-13 | 南方风机股份有限公司 | Electromagnetic driving fast isolation rectangular wind valve |
| CN201796610U (en) * | 2010-08-09 | 2011-04-13 | 中国广东核电集团有限公司 | Remote control device of reset switch of fireproof air door on nuclear reactor building of nuclear power plant |
| CN201818806U (en) * | 2010-08-30 | 2011-05-04 | 江苏鹏飞集团股份有限公司 | Two-stage linkage air locking valve with counter weight |
| JP4727327B2 (en) * | 2005-07-14 | 2011-07-20 | 新明和エンジニアリング株式会社 | Movable galleries and fire extinguishing systems for fire extinguishing target zones having the same |
-
2011
- 2011-09-06 CN CN 201110262200 patent/CN102359603B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020423A (en) * | 1990-07-20 | 1991-06-04 | Mestek, Inc. | Rotating blade damper with blade lock and stop mechanism |
| JP4727327B2 (en) * | 2005-07-14 | 2011-07-20 | 新明和エンジニアリング株式会社 | Movable galleries and fire extinguishing systems for fire extinguishing target zones having the same |
| CN101430011A (en) * | 2008-09-18 | 2009-05-13 | 南方风机股份有限公司 | Electromagnetic driving fast isolation rectangular wind valve |
| CN201796610U (en) * | 2010-08-09 | 2011-04-13 | 中国广东核电集团有限公司 | Remote control device of reset switch of fireproof air door on nuclear reactor building of nuclear power plant |
| CN201818806U (en) * | 2010-08-30 | 2011-05-04 | 江苏鹏飞集团股份有限公司 | Two-stage linkage air locking valve with counter weight |
Non-Patent Citations (1)
| Title |
|---|
| JP特许第4727327号B2 2011.07.20 |
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| CN102359603A (en) | 2012-02-22 |
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Address after: No.69, Shitong Road, Shijiazhuang, Hebei 050222 Patentee after: Shijiazhuang Xianchu Nuclear Equipment Co.,Ltd. Address before: No.69, Shitong Road, Shijiazhuang, Hebei 050222 Patentee before: SHIJIAZHUANG NO.1 VALVE FACTORY CO.,LTD. |
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