CN111824946A - Supporting device of rotary lifting lug for overhauling explosion valve - Google Patents
Supporting device of rotary lifting lug for overhauling explosion valve Download PDFInfo
- Publication number
- CN111824946A CN111824946A CN202010804356.6A CN202010804356A CN111824946A CN 111824946 A CN111824946 A CN 111824946A CN 202010804356 A CN202010804356 A CN 202010804356A CN 111824946 A CN111824946 A CN 111824946A
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- China
- Prior art keywords
- lifting lug
- supporting
- rotary
- main body
- valve
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a supporting device of a rotary lifting lug for overhauling a blasting valve, which is characterized by comprising a supporting main body, wherein the supporting main body is formed by fixedly connecting two supporting structures, a main lifting lug is arranged below the supporting main body, a thrust bearing is arranged on the side part of the supporting main body, the thrust bearing is connected with a rotary beam, and an auxiliary lifting lug is arranged below the rotary beam. The special support for the rotary lifting lug for overhauling the explosion valve comprises a main lifting lug which is large in bearing capacity and used for lifting the explosion valve and an auxiliary lifting lug which is convenient to use and used for lifting an explosion unit of the explosion valve, so that the special support is convenient to overhaul and use in the operation and maintenance period of a power station, the defects of inconvenience in operation, long time, low safety, poor economical efficiency, high irradiation dose and the like of a traditional lifting mode are overcome, and the safety and the economical efficiency of a nuclear power station are improved.
Description
Technical Field
The invention relates to a special supporting device for a rotary lifting lug for overhauling a blast valve, belonging to the field of electric auxiliary equipment.
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 technical problem to be solved by the invention is as follows: 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 invention is to provide a supporting device of a rotary lifting lug for overhauling a blasting valve, which is characterized by comprising a supporting main body, wherein the supporting main body is formed by fixedly connecting two supporting structures, a main lifting lug is arranged below the supporting main body, a thrust bearing is arranged on the side part of the supporting main body, the thrust bearing is connected with a rotary beam, and an auxiliary lifting lug is arranged below the rotary beam.
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 special support for the rotary lifting lug for overhauling the explosion valve comprises a main lifting lug which is large in bearing capacity and used for lifting the explosion valve and an auxiliary lifting lug which is convenient to use and used for lifting an explosion unit of the explosion valve, so that the special support is convenient to overhaul and use in the operation and maintenance period of a power station, the defects of inconvenience in operation, long time, low safety, poor economical efficiency, high irradiation dose and the like of a traditional lifting mode are overcome, and the safety and the economical efficiency of a nuclear power station are improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the 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 special support main body 1 is formed by welding profile steel and is used for welding the main lifting lug 2; according to the invention, two bearing main lifting lugs 2 are welded on the supporting main body 1 and used for lifting the blasting valve, the positions of the main lifting lugs 2 are as far as above the blasting valve so as to facilitate lifting, and a thrust bearing 5 is welded on the side of the supporting main body 1 and used for welding the rotating beam 4. The auxiliary lifting lug 3 is welded at a proper position of the rotating beam 4, and the rotating range of the blasting unit is adapted, so that the lifting of the blasting unit of the blasting valve is met.
The invention provides a rotating beam clamping seat 7 for fixing an auxiliary lifting lug when the special support does not 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 |
|---|---|---|---|
| CN202010804356.6A CN111824946A (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 |
|---|---|---|---|
| CN202010804356.6A CN111824946A (en) | 2020-08-10 | 2020-08-10 | Supporting device of rotary lifting lug for overhauling explosion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111824946A true CN111824946A (en) | 2020-10-27 |
Family
ID=72917663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010804356.6A Pending CN111824946A (en) | 2020-08-10 | 2020-08-10 | Supporting device of rotary lifting lug for overhauling explosion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111824946A (en) |
-
2020
- 2020-08-10 CN CN202010804356.6A patent/CN111824946A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: No.15, Gangcheng East Street, hi tech Zone, Yantai City, Shandong Province Applicant after: Shandong Nuclear Power Co.,Ltd. Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No.15, Gangcheng East Street, hi tech Zone, Yantai City, Shandong Province Applicant before: Shandong Nuclear Power Co.,Ltd. Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
|
| CB02 | Change of applicant information |