CN109909953B - Flashboard clamping device for nuclear power plant - Google Patents
Flashboard clamping device for nuclear power plant Download PDFInfo
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- CN109909953B CN109909953B CN201910245151.6A CN201910245151A CN109909953B CN 109909953 B CN109909953 B CN 109909953B CN 201910245151 A CN201910245151 A CN 201910245151A CN 109909953 B CN109909953 B CN 109909953B
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- arm
- flashboard
- hinge
- clamping device
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- 238000000034 method Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- Lift Valve (AREA)
Abstract
The invention belongs to the technical field of mechanical design, and particularly relates to a flashboard clamping device for a nuclear power plant. The invention comprises a supporting arm, a first rotating arm, an additional arm, a pin, a thrust rod, a handle, a second rotating arm, a universal top and a hinge. The second rotating arm is arranged at one end of the supporting arm vertically, the thrust rod penetrates through the other end of the supporting arm, and the two ends of the thrust rod are respectively connected with the handle and the universal top. The universal top is positioned on the same side of the second radial arm and is positioned on the supporting arm. The hinge is arranged in the middle of the supporting arm through a pin, and a first rotating arm and an additional arm are arranged on the hinge. The first rotating arm is parallel to the second rotating arm, the additional arm is parallel to the supporting arm, and the universal top is contacted with the additional arm. The invention has compact structural design, convenient operation, stability and reliability; the technical problem of the flashboard installation and the disassembly of the parallel gate valve can be effectively solved.
Description
Technical Field
The invention belongs to the technical field of mechanical design, and particularly relates to a flashboard clamping device for a nuclear power plant.
Background
The parallel gate valve is widely used in nuclear power plants, especially in the fields of large-caliber, high-temperature and high-pressure systems, is the most common valve equipment in the nuclear power plants and is also widely used in two WWER-1000/V-428 type nuclear reactor devices in the first-term engineering of Tian Wan nuclear power plants, the gate plates of the parallel gate valve are assembled together in a pair in a back-to-back mode, the back of the parallel gate valve is provided with a spring, and the spring is used for precompression during installation, so that the generated elastic force can spread the gate plates on the two sides towards the valve seat, and the gate plates and the valve seat form a pressing force in the initial stage. The parallel gate valve structure is shown in fig. 1.
Because the back spring of the parallel gate valve is precompressed when the parallel gate valve is installed, a certain technical problem and maintenance risk exist when the gate plate assembly is disassembled, and according to the drawing, the precompression force generated by the spring is counteracted by the reaction force of the valve seat and the gate plate, so that the gate plate can move in the valve cavity to be balanced. However, when the valve is disassembled and maintained, the flashboard needs to be taken out of the valve cavity, and when the instantaneous reaction force of the flashboard and the valve seat are released, the flashboard is in an unbalanced state, and the spring can push out the flashboard, so that the flashboard has a collapse risk; in addition, when the flashboard is assembled back, the springs are required to be precompressed, so that the thicknesses of the flashboard at two sides can be adjusted to a certain value to be installed in the valve seat gap.
Based on the practical problems encountered in the maintenance, the invention provides the flashboard clamping device, which can clamp the flashboard in advance to counteract the spring force when the valve is disassembled and assembled, and firstly, the device prevents the flashboard from collapsing when the flashboard is separated from the valve seat, thereby playing a role in protecting the sealing surface of the flashboard; secondly, the compression amount of the spring, namely the thickness of the flashboard can be controlled, and friction between the sealing surface of the flashboard and the sealing surface of the valve seat is avoided when the flashboard is installed or taken out.
Disclosure of Invention
The invention solves the technical problems that:
the invention provides a flashboard clamping device for a nuclear power plant, which is characterized in that: the structure design is compact, the operation is convenient, stable and reliable; the technical problem of the flashboard installation and the disassembly of the parallel gate valve can be effectively solved.
The invention adopts the technical scheme that:
a flashboard clamping device for a nuclear power plant comprises a supporting arm, a first rotating arm, an additional arm, a pin, a thrust rod, a handle, a second rotating arm, a universal top and a hinge.
The second rotating arm is arranged at one end of the supporting arm vertically, the thrust rod penetrates through the other end of the supporting arm, and the two ends of the thrust rod are respectively connected with the handle and the universal top.
The universal top is positioned on the same side of the second radial arm and is positioned on the supporting arm.
The hinge is arranged in the middle of the supporting arm through a pin, and a first rotating arm and an additional arm are arranged on the hinge.
The first rotating arm is parallel to the second rotating arm, the additional arm is parallel to the supporting arm, and the universal top is contacted with the additional arm.
The hinge is rotatable about a pin.
When the parallel flashboard is disassembled, the flashboard is lifted to a certain height, but the flashboard cannot be completely separated from the valve seat, otherwise, the flashboard has the risk of collapsing; installing a flashboard clamping device, and paying attention to the fact that a clamp contact is clamped at the central part of the flashboard; the maintenance personnel rotates the handle to enable the push rod to press the additional arm, so as to push the radial arm to press the flashboard; compressing the back spring of the flashboard until the flashboard is separated from the valve seat, and carefully lifting the flashboard from the valve cavity; when the flashboard is reinstalled, the method is carried out according to the same method.
The invention has the beneficial effects that:
(1) The invention provides a flashboard clamping device for a nuclear power plant, which has the advantages that the whole structure of the flashboard clamping device is compact, the structure is designed as simple as possible on the premise of ensuring the strength, the whole weight of a clamp is lighter, and the installation and the operation are convenient;
(2) The invention provides a flashboard clamping device for a nuclear power plant, wherein the main body of the flashboard clamping device is made of austenitic stainless steel, has certain corrosion resistance, and a thrust rod is required to bear certain load and is made of alloy steel;
(3) The invention provides a flashboard clamping device for a nuclear power plant, wherein a radial arm and an accessory arm of the radial arm bear certain thrust, and the radial arm and the accessory arm are provided with reinforcing ribs to improve the strength;
(4) The invention provides a flashboard clamping device for a nuclear power plant, which is characterized in that a universal top structure is designed for preventing the stress direction from being misaligned, and the contacts of a thrust rod, a supporting arm and a radial arm can be automatically aligned during installation.
(5) The invention provides a flashboard clamping device of a nuclear power plant, which can realize clamping of the device by rotating a thrust rod, can control the clamping angle of a cantilever and is convenient to use.
Drawings
FIG. 1 is a schematic diagram of a parallel gate valve;
FIG. 2 is a schematic view of a shutter clamping device for a nuclear power plant;
in the figure: 1-supporting arm, 2-radial arm I, 3-additional arm, 4-pin, 5-thrust rod, 6-handle, 7-radial arm II, 8-universal top, 9-hinge.
Detailed Description
The shutter clamping device for the nuclear power plant provided by the invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2, the flashboard clamping device for the nuclear power plant provided by the invention comprises a support arm 1, a first rotating arm 2, an additional arm 3, a pin 4, a thrust rod 5, a handle 6, a second rotating arm 7, a universal top 8 and a hinge 9, wherein the second rotating arm 7 is arranged at one end of the support arm 1 vertically, the thrust rod 5 penetrates through the other end of the support arm 1, the two ends of the thrust rod are respectively connected with the handle 6 and the universal top 8, the universal top 8 is positioned at the same side of the support arm 1 on the second rotating arm 7, the hinge 9 is arranged at the middle position of the support arm 1 through the pin 4, the hinge 9 can rotate around the pin 4, the first rotating arm 2 and the additional arm 3 are arranged on the hinge 9, the first rotating arm 2 is parallel to the second rotating arm 7, the additional arm 3 is parallel to the support arm 1, and the universal top 8 is in contact with the additional arm 3.
When the parallel flashboard is disassembled, the flashboard is lifted to a certain height, but the flashboard cannot be completely separated from the valve seat, otherwise, the flashboard has the risk of collapsing; installing a flashboard clamping device, and paying attention to the fact that a clamp contact is clamped at the central part of the flashboard; the maintenance personnel rotates the handle to enable the push rod to press the additional arm, so as to push the radial arm to press the flashboard; compressing the back spring of the flashboard until the flashboard is separated from the valve seat, and carefully lifting the flashboard from the valve cavity; when the flashboard is reinstalled, the method is carried out according to the same method.
The shutter clamping apparatus for a nuclear power plant according to the present invention has been described in detail with reference to the drawings and the embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described.
Claims (2)
1. The utility model provides a flashboard clamping device for nuclear power plant which characterized in that: the device comprises a supporting arm (1), a first rotating arm (2), an additional arm (3), a pin (4), a thrust rod (5), a handle (6), a second rotating arm (7), a universal top (8) and a hinge (9); the second rotating arm (7) is arranged at one end of the supporting arm (1) vertically, the thrust rod (5) penetrates through the other end of the supporting arm (1), and the two ends of the thrust rod are respectively connected with the handle (6) and the universal top (8); the universal top (8) is positioned on the same side of the support arm (1) on the second radial arm (7); the hinge (9) is arranged in the middle of the supporting arm (1) through a pin (4), and the first rotating arm (2) and the additional arm (3) are arranged on the hinge (9); the first rotating arm (2) is parallel to the second rotating arm (7), the additional arm (3) is parallel to the supporting arm (1), and the universal top (8) is contacted with the additional arm (3); the hinge (9) is rotatable about the pin (4).
2. The flashboard clamping device for a nuclear power plant according to claim 1, wherein: when the parallel flashboard is disassembled, the flashboard is lifted to a certain height, but the flashboard cannot be completely separated from the valve seat, otherwise, the flashboard has the risk of collapsing; installing a flashboard clamping device, and paying attention to the fact that a clamp contact is clamped at the central part of the flashboard; the maintenance personnel rotates the handle to enable the push rod to press the additional arm, so as to push the radial arm to press the flashboard; compressing the back spring of the flashboard until the flashboard is separated from the valve seat, and carefully lifting the flashboard from the valve cavity; when the flashboard is reinstalled, the method is carried out according to the same method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910245151.6A CN109909953B (en) | 2019-03-28 | 2019-03-28 | Flashboard clamping device for nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910245151.6A CN109909953B (en) | 2019-03-28 | 2019-03-28 | Flashboard clamping device for nuclear power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109909953A CN109909953A (en) | 2019-06-21 |
| CN109909953B true CN109909953B (en) | 2024-04-09 |
Family
ID=66967426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910245151.6A Active CN109909953B (en) | 2019-03-28 | 2019-03-28 | Flashboard clamping device for nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109909953B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427364A (en) * | 1992-11-27 | 1995-06-27 | Herhof-Umwelttechnik Gmbh | Screw clamp |
| WO2005033574A1 (en) * | 2003-10-03 | 2005-04-14 | Micronix Pty Ltd | Universal ball joint tensioning mechanism |
| CN103042404A (en) * | 2012-12-19 | 2013-04-17 | 昆山迈致治具科技有限公司 | Hydraulic clamping fixture |
| CN103084994A (en) * | 2011-11-05 | 2013-05-08 | 周学建 | F type wooden clamp and production process thereof |
| CN203863550U (en) * | 2014-05-25 | 2014-10-08 | 常州优奇电子科技有限公司 | Universal bench vise |
| CN204843607U (en) * | 2015-07-22 | 2015-12-09 | 杭州萧山民主模具厂 | Multidirectional screens anchor clamps |
| CN205928319U (en) * | 2016-08-18 | 2017-02-08 | 河南航瑞碳化硅制品有限公司 | Easy power F type anchor clamps |
| CN209903113U (en) * | 2019-03-28 | 2020-01-07 | 江苏核电有限公司 | Flashboard clamping device for nuclear power plant |
-
2019
- 2019-03-28 CN CN201910245151.6A patent/CN109909953B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427364A (en) * | 1992-11-27 | 1995-06-27 | Herhof-Umwelttechnik Gmbh | Screw clamp |
| WO2005033574A1 (en) * | 2003-10-03 | 2005-04-14 | Micronix Pty Ltd | Universal ball joint tensioning mechanism |
| CN103084994A (en) * | 2011-11-05 | 2013-05-08 | 周学建 | F type wooden clamp and production process thereof |
| CN103042404A (en) * | 2012-12-19 | 2013-04-17 | 昆山迈致治具科技有限公司 | Hydraulic clamping fixture |
| CN203863550U (en) * | 2014-05-25 | 2014-10-08 | 常州优奇电子科技有限公司 | Universal bench vise |
| CN204843607U (en) * | 2015-07-22 | 2015-12-09 | 杭州萧山民主模具厂 | Multidirectional screens anchor clamps |
| CN205928319U (en) * | 2016-08-18 | 2017-02-08 | 河南航瑞碳化硅制品有限公司 | Easy power F type anchor clamps |
| CN209903113U (en) * | 2019-03-28 | 2020-01-07 | 江苏核电有限公司 | Flashboard clamping device for nuclear power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109909953A (en) | 2019-06-21 |
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