CN212655357U - Supporting device of rotary lifting lug for overhauling explosion valve - Google Patents
Supporting device of rotary lifting lug for overhauling explosion valve Download PDFInfo
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- CN212655357U CN212655357U CN202021649009.2U CN202021649009U CN212655357U CN 212655357 U CN212655357 U CN 212655357U CN 202021649009 U CN202021649009 U CN 202021649009U CN 212655357 U CN212655357 U CN 212655357U
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- lug
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- rotatory
- valve
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Abstract
The utility model discloses a supporting device of rotatory lug is used in blasting valve maintenance, a serial communication port, including supporting the main part, support the main part and constitute by two bearing structure fixed connection, the below of supporting the main part is equipped with main lug, and the lateral part of supporting the main part is equipped with thrust bearing, and thrust bearing is connected with rotatory roof beam, and the below of rotatory roof beam is equipped with vice lug. The utility model discloses a blasting valve overhauls with special support of rotatory lug contains a main lug that bears big being used for handling blasting valve and a convenient to use's the vice lug that is used for handling blasting valve blasting unit, makes things convenient for the maintenance during power station fortune dimension to use, has eliminated that traditional handling mode operation is inconvenient, long time, the security is low, economic nature is poor and drawback such as irradiation dose height, has improved the security and the economic nature of nuclear power station.
Description
Technical Field
The utility model relates to a special strutting arrangement of rotatory lug is used in blasting valve maintenance belongs to the electric auxiliary assembly field.
Background
A blast valve of an automatic pressure relief system of a nuclear power station is a part of a coolant pressure boundary and is an important barrier for preventing radioactive fission products from leaking under normal working conditions. Under special working conditions, the blasting unit of the blasting valve automatically explodes to release the pressure of the pressure boundary so as to prevent overpressure and further protect the reactor core. It is arranged in a radiation zone equivalent to the high dose region of the core, subject to its functional requirements.
According to the requirements of ASME specifications and design specifications of the explosion valve, the explosion unit of the explosion valve is checked at least every refueling period, and the whole explosion valve is checked at least every two refueling periods. For the maintenance activities of the valve, the existing nuclear power station mostly adopts the modes of erecting scaffolds, mostly using steel beam suspension straps and the like to carry out lifting and maintenance on the valve. Due to the fact that the scaffold is set up by the factors of self bearing limit, high requirements on space positions and the like, and the scaffold cannot be set up in sensitive areas such as power-related areas, accessibility of partial areas is poor, and operation is difficult. Meanwhile, a large amount of time is spent on building the hoisting scaffold, the operation risk is increased, and the irradiation measurement of the operating personnel is greatly increased.
In addition, compare other valves, the blasting unit of blasting valve is special item, because its selective examination frequency is high and difficult the carrying, adopts traditional handling mode, has increased site operation's risk and work load, has lengthened the power station major repair key path. Meanwhile, the explosion valve is positioned in a high-radioactivity area, and the irradiation dose of personnel is increased. In summary, the conventional method is adopted to overhaul the blasting valve and the blasting unit thereof, which is not favorable for the safe, fast and economic principle of overhaul of the power plant.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: how to make things convenient for the maintenance of power plant to use, eliminate the low security of traditional handling mode, improve the economic nature of power plant.
In order to solve the technical problem, the technical scheme of the utility model a support arrangement of rotatory lug is used in blast valve maintenance is provided, a serial communication port, including supporting the main part, support the main part and constitute by two bearing structure fixed connection, the below of supporting the main part is equipped with main lug, and the lateral part of supporting the main part is equipped with thrust bearing, and thrust bearing is connected with rotatory roof beam, and the below of rotatory roof beam is equipped with vice lug.
Preferably, the rotating beam is arranged on the side of the supporting main body and connected with the thrust bearing support, and a rotating beam clamping seat capable of clamping the rotating beam is further arranged on the side of the supporting main body.
Preferably, the support body is provided with a support body fastening point capable of stabilizing the device.
The design of the support main body can eliminate a plurality of problems caused by erecting a scaffold; the design of the main lifting lug can facilitate the lifting of the whole valve during operation and maintenance, and the use of tools with low safety, such as lifting straps and the like, is weakened; the design of the auxiliary lifting lug meets the requirements of lifting the blasting unit which is high in overhauling frequency and not easy to carry.
The utility model discloses a blasting valve overhauls with special support of rotatory lug contains a main lug that bears big being used for handling blasting valve and a convenient to use's the vice lug that is used for handling blasting valve blasting unit, makes things convenient for the maintenance during power station fortune dimension to use, has eliminated that traditional handling mode operation is inconvenient, long time, the security is low, economic nature is poor and drawback such as irradiation dose height, has improved the security and the economic nature of nuclear power station.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a supporting device of a rotary lifting lug for overhauling a burst valve is characterized by comprising a supporting main body 1, wherein the supporting main body 1 is formed by fixedly connecting two supporting structures, a main lifting lug 2 is arranged below the supporting main body 1, a thrust bearing 5 is arranged on the side of the supporting main body 1, the thrust bearing 5 is connected with a rotary beam 4, an auxiliary lifting lug 3 is arranged below the rotary beam 4, the rotary beam 4 is arranged on the side of the supporting main body 1 and is connected with a thrust bearing support 6, and a rotary beam clamping seat 7 capable of clamping the rotary beam 4 is further arranged on the side of the supporting main body 1.
The utility model forms a special supporting main body 1 by welding profile steel, which is used for welding a main lifting lug 2; the utility model discloses a weld two main lugs 2 that bear in supporting main part 1 for handling blasting valve, main lug 2's position is as far as possible in order to conveniently lift by crane directly over the blasting valve, the utility model discloses a thrust bearing 5 of side welding of supporting main part 1 for welding swivel beam 4. The utility model discloses weld vice lug 3 in the suitable position of swivel beam 4, adapt to the rotation range of blasting unit to satisfy lifting by crane of blasting valve blasting unit.
The utility model discloses set up a rotatory roof beam cassette 7 for at this special support fixed pair lug when out of work.
The design of rotatable vice lug 2 can be in 180 degrees within ranges rotations, can satisfy the handling of two sequence blasting valve blasting units to conveniently descend it to near steel platform. The design of the main lifting lug 1 is positioned right above the blasting valve, so that the chain block is convenient to connect and operate.
The design of the special support is subjected to stress analysis and verification.
Claims (3)
1. The utility model provides a support arrangement of rotatory lug is used in explosion valve maintenance, its characterized in that, including supporting main part (1), supporting main part (1) comprises two bearing structure fixed connection, and the below of supporting main part (1) is equipped with main lug (2), and the lateral part of supporting main part (1) is equipped with thrust bearing (5), and thrust bearing (5) are connected with rotatory roof beam (4), and the below of rotatory roof beam (4) is equipped with vice lug (3).
2. The supporting device of the rotary lifting lug for overhauling the blast valve according to claim 1, characterized in that the rotary beam (4) is arranged at the side of the supporting body (1) and connected with the thrust bearing support (6), and the side of the supporting body (1) is further provided with a rotary beam clamping seat (7) capable of clamping the rotary beam (4).
3. A support device for a rotary lifting lug for service of a burst valve in accordance with claim 1, characterised in that the support body (1) is provided with support body fastening points for stabilising the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021649009.2U CN212655357U (en) | 2020-08-10 | 2020-08-10 | Supporting device of rotary lifting lug for overhauling explosion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021649009.2U CN212655357U (en) | 2020-08-10 | 2020-08-10 | Supporting device of rotary lifting lug for overhauling explosion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212655357U true CN212655357U (en) | 2021-03-05 |
Family
ID=74769615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021649009.2U Active CN212655357U (en) | 2020-08-10 | 2020-08-10 | Supporting device of rotary lifting lug for overhauling explosion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212655357U (en) |
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2020
- 2020-08-10 CN CN202021649009.2U patent/CN212655357U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.15, Gangcheng East Street, hi tech Zone, Yantai City, Shandong Province Patentee after: Shandong Nuclear Power Co.,Ltd. Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No.15, Gangcheng East Street, hi tech Zone, Yantai City, Shandong Province Patentee before: Shandong Nuclear Power Co.,Ltd. Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |