CN214446069U - Nuclear power plant main steam relief valve clack extracting tool - Google Patents
Nuclear power plant main steam relief valve clack extracting tool Download PDFInfo
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- CN214446069U CN214446069U CN202022963095.0U CN202022963095U CN214446069U CN 214446069 U CN214446069 U CN 214446069U CN 202022963095 U CN202022963095 U CN 202022963095U CN 214446069 U CN214446069 U CN 214446069U
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- valve clack
- clamping ring
- main steam
- nuclear power
- power plant
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Abstract
The utility model relates to a nuclear power maintenance technical field specifically discloses a nuclear power plant owner steam safety valve clack extracting tool, including the clamp ring, insert the handle in two blind holes on the clamp ring to and the tight bolt in top in four screw holes on the screw in clamp ring. Use the utility model discloses extracting tool can avoid the condition that pure manual is difficult to demolish the valve clack to take place, has avoided the violence to break open the valve clack simultaneously, has improved the success rate that the valve clack was dismantled, has reduced nuclear power plant's fortune dimension cost.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power maintenance, concretely relates to nuclear power plant owner steam relief valve clack extracting tool.
Background
The main steam safety valve is one of key sensitive devices of a nuclear power plant, plays a safety function of preventing overpressure of a main steam pipeline, and can timely return to a seat and seal to avoid primary loop reactor core supercooling. The valve clack is a core component of the main steam safety valve, is connected to the valve rod through threads, and is matched with parts such as a valve seat and the like to realize overpressure jump and seat return sealing.
According to the requirements of related license documents, the disassembly check work of all main steam safety valves must be completed every seven refueling cycles, and the reliability of safety equipment is ensured. The main steam safety valve runs at high temperature and high pressure for a long time, and the equipment installation process and precision influence, the valve clack of the valve is inevitably difficult to detach from the valve rod, and the violent forcible detachment can cause the damage of core components and the economic loss of tens of thousands yuan.
Therefore, it is necessary to design a tool for detaching a valve flap of a main steam safety valve in a nuclear power plant to solve the above problems.
Disclosure of Invention
An object of the utility model is to provide a nuclear power plant main steam relief valve clack extracting tool can realize pressing from both sides tightly of valve clack to back out the valve clack with the help of external force, reduce the risk of brokenly tearing open the valve clack.
The technical scheme of the utility model as follows:
a nuclear power plant main steam safety valve clack dismounting tool comprises a clamping ring, a handle and a puller bolt;
the clamping ring is of a circular ring structure and is used for being sleeved into a valve clack of the main steam safety valve;
a threaded hole is processed in the clamping ring, and the central axis of the threaded hole is arranged along the radial direction of the clamping ring;
two blind holes are symmetrically arranged on the outer side surface of the clamping ring along the diameter direction;
the two handles are of rod-shaped structures, are respectively inserted into the two blind holes on the clamping ring and are used for holding and rotating;
the four jacking bolts are respectively screwed into the four threaded holes in the clamping ring and used for jacking the valve clack and transferring the rotating force of the handle.
Four threaded holes are machined in the clamping ring at equal intervals.
The two blind holes are respectively the same as the two adjacent threaded holes in distance.
The two handles are sleeved with the extension bar, so that the rotary operation is more convenient.
After the two handles are inserted into the two blind holes in the clamping ring, the two handles are welded with the blind holes at an angle, so that the two handles are firmly connected.
When the valve clack of the main steam safety valve is detached, the clamping ring is sleeved in the valve clack of the main steam safety valve, and the valve clack is tightly propped by the propping bolt, so that the valve clack is positioned.
The beneficial effects of the utility model reside in that:
use the utility model discloses extracting tool can avoid the condition that pure manual is difficult to demolish the valve clack to take place, has avoided the violence to break open the valve clack simultaneously, has improved the success rate that the valve clack was dismantled, has reduced nuclear power plant's fortune dimension cost.
Drawings
FIG. 1 is a schematic view of a removal tool;
FIG. 2 is a schematic view A of the tool installation;
fig. 3 is a tool installation schematic B.
In the figure: 1. a clamping ring; 2. a handle; 3. and tightly pushing the bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The tool for disassembling the valve clack of the main steam safety valve of the nuclear power plant as shown in figure 1 comprises a clamping ring 1, a handle 2 and a puller bolt 3.
The clamping ring 1 is of a circular ring structure and is used for being sleeved into a valve clack of the main steam safety valve, guiding the valve clack and providing foundation support for the puller bolt 3.
Four threaded holes are machined in the clamping ring 1 at equal intervals, and central axes of the four threaded holes are respectively arranged along the radial direction of the clamping ring 1. Two blind holes are symmetrically arranged on the outer side surface of the clamping ring 1 along the diameter direction, and the distances between the blind holes and two adjacent threaded holes are the same. The depth of the blind hole is 3 mm.
The dimensions of the clamping ring 1 are for example: the outer diameter is 97.2mm, the inner diameter is 77.2mm, and the thickness is 30 mm.
The two handles 2 are of rod-shaped structures and are respectively inserted into the two blind holes in the clamping ring 1 for angle welding, so that the two handles are firmly connected and used for holding and rotating operation. The handle 2 has an outer diameter phi 20 and a length of 120 mm.
The two handles 2 can be sleeved with extension bars, so that the rotary operation is more convenient.
The four jacking bolts 3 are screwed into the four threaded holes in the clamping ring 1 respectively and used for jacking the valve clack and transferring the rotating force of the handle 2.
When the valve clack of the main steam safety valve is disassembled, the clamping ring 1 is sleeved into the valve clack of the main steam safety valve, the jacking bolt 3 is screwed down, so that the valve clack is jacked by the jacking bolt 3, and the valve clack is positioned; then the handle 2 is rotated to make the valve clack be screwed out from the valve rod thread, thereby realizing the disassembly of the valve clack.
Claims (6)
1. The utility model provides a nuclear power plant owner steam relief valve clack extracting tool which characterized in that: comprises a clamping ring (1), a handle (2) and a puller bolt (3);
the clamping ring (1) is of a circular ring structure and is used for being sleeved into a valve clack of the main steam safety valve;
a threaded hole is processed in the clamping ring (1), and the central axis of the threaded hole is arranged along the radial direction of the clamping ring (1);
two blind holes are symmetrically arranged on the outer side surface of the clamping ring (1) along the diameter direction;
the two handles (2) are of rod-shaped structures and are respectively inserted into the two blind holes in the clamping ring (1) for holding and rotating;
the four jacking bolts (3) are respectively screwed into the four threaded holes in the clamping ring (1) and used for jacking the valve clack and transferring the rotating force of the handle (2).
2. The tool for disassembling the valve clack of the main steam safety valve of the nuclear power plant as claimed in claim 1, wherein: four threaded holes are machined in the clamping ring (1) at equal intervals.
3. The tool for disassembling the valve clack of the main steam safety valve of the nuclear power plant as claimed in claim 2, wherein: the two blind holes are respectively the same as the two adjacent threaded holes in distance.
4. The tool for disassembling the valve clack of the main steam safety valve of the nuclear power plant as claimed in claim 1, wherein: the two handles (2) are sleeved with the extension bar, so that the rotary operation is more convenient.
5. The tool for disassembling the valve clack of the main steam safety valve of the nuclear power plant as claimed in claim 1, wherein: after the two handles (2) are inserted into the two blind holes in the clamping ring (1), the two handles are welded with the blind holes at an angle, so that the two handles are firmly connected.
6. The tool for detaching the valve clack of the main steam safety valve of the nuclear power plant as claimed in any one of claims 1 to 5, wherein: when the valve clack of the main steam safety valve is detached, the clamping ring (1) is sleeved into the valve clack of the main steam safety valve, and the jacking bolt (3) jacks the valve clack tightly to realize the positioning of the valve clack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022963095.0U CN214446069U (en) | 2020-12-10 | 2020-12-10 | Nuclear power plant main steam relief valve clack extracting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022963095.0U CN214446069U (en) | 2020-12-10 | 2020-12-10 | Nuclear power plant main steam relief valve clack extracting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214446069U true CN214446069U (en) | 2021-10-22 |
Family
ID=78188054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022963095.0U Active CN214446069U (en) | 2020-12-10 | 2020-12-10 | Nuclear power plant main steam relief valve clack extracting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214446069U (en) |
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2020
- 2020-12-10 CN CN202022963095.0U patent/CN214446069U/en active Active
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