CN213971002U - Main steam safety valve clack remove device - Google Patents
Main steam safety valve clack remove device Download PDFInfo
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- CN213971002U CN213971002U CN202022352958.0U CN202022352958U CN213971002U CN 213971002 U CN213971002 U CN 213971002U CN 202022352958 U CN202022352958 U CN 202022352958U CN 213971002 U CN213971002 U CN 213971002U
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- valve core
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- fixed tray
- main steam
- handle
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Abstract
The utility model relates to the technical field of nuclear power maintenance, in particular to a valve clack taking-out device of a main steam safety valve, wherein a positioning hole is processed at the central position of a fixed tray, and a pair of connecting holes are symmetrically processed at the two sides of the positioning hole; the bottom end of the handle penetrates through a positioning hole in the fixed tray and is fixedly connected with the fixed tray through a valve core positioning nut; the upper end of the valve core connecting screw penetrates through a connecting hole on the fixed tray and is connected with the fixed tray; when the main steam safety valve is disassembled, the lower end of the valve core connecting screw is connected with a threaded hole in the on-site valve core. The utility model discloses the device volume is less, and convenient operation has reduced the operating time that the valve clack took out, has improved the work efficiency that main steam relief valve overhauld.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power maintenance, concretely relates to main steam safety valve clack remove device.
Background
The main steam safety valve belongs to nuclear safety secondary equipment of a nuclear power plant, not only provides overpressure protection for a steam generator and a main steam pipeline, but also plays a role in preventing overpressure and overheating at a return side by removing energy generated by a reactor coolant system under the working conditions of emergency shutdown and the like and when the bypass discharge of the steam turbine cannot be utilized, and prevents the supercooling of a reactor core by limiting the quantity and the speed of steam release, and is important key sensitive equipment of the nuclear power plant.
In nuclear power plant's overhaul throughout the year, when carrying out disintegration maintenance to main steam relief valve, there is the valve clack to take out difficult even the multiple occurrence valve clack and stings defects such as dead, need online machine to add can take out the valve clack, and this process is not only long consuming time, and still can influence maintenance work such as follow-up valve clack grinding, has the risk of restricting main steam relief valve maintenance such as mainline work.
At present, no tool for specially taking out the valve clack of the main steam safety valve exists in a nuclear power plant, so that a special tool needs to be designed to solve the problem urgently.
Disclosure of Invention
An object of the utility model is to provide a main steam relief valve clack remove device can directly fix the valve clack, unscrews.
The technical scheme of the utility model as follows:
a valve clack taking-out device of a main steam safety valve comprises a handle, a fixed tray, a valve core connecting screw and a valve core positioning nut;
a positioning hole is processed at the center of the fixed tray, and a pair of connecting holes are symmetrically processed at two sides of the positioning hole;
the bottom of the handle is provided with an external thread;
the bottom end of the handle penetrates through a positioning hole in the fixed tray and is fixedly connected with the fixed tray through a valve core positioning nut;
the valve core connecting screws are two, and the upper ends of the valve core connecting screws penetrate through the connecting holes in the fixed tray to be connected with the fixed tray.
And a groove is processed at the bottom end of the valve core positioning nut and is matched with a protruding part at the top end of the valve core on site.
When the main steam safety valve is disassembled, the lower end of the valve core connecting screw is connected with a threaded hole in the valve core on site, and the bottom groove of the valve core positioning nut is propped against the convex part at the top end of the valve core.
The fixed tray is in a disc shape.
The handle is of a T-shaped structure.
The beneficial effects of the utility model reside in that:
1) the utility model discloses the device can effectively solve main steam relief valve clack and take out difficult problem, effectively avoids the valve clack to take out the risk of stinging, has improved main steam relief valve maintenance quality.
2) The utility model discloses the device volume is less, and convenient operation has reduced the operating time that the valve clack took out, has improved the work efficiency that the main steam relief valve overhauld, practices thrift the key route, has guaranteed the progress that follow-up valve clack ground and the whole maintenance work of valve.
3) The utility model discloses the device can accurate positioning valve clack bolt hole position and look for the centering.
4) The utility model discloses the device takes out other valve clacks and has reference meaning, and scalability is strong.
Drawings
FIG. 1 is a front view of a valve flap extraction device;
fig. 2 is a left side view of the valve flap extraction device.
In the figure: 1. a handle; 2. fixing the tray; 3. the valve core is connected with a screw; 4. and a valve core positioning nut.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The main steam safety valve clack taking-out device shown in figures 1-2 comprises a handle 1, a fixed tray 2, a valve core connecting screw 3 and a valve core positioning nut 4.
The fixed tray 2 is in a disc shape, a positioning hole is machined in the center of the fixed tray, and a pair of connecting holes are symmetrically machined in the two sides of the positioning hole.
The handle 1 is of a T-shaped structure, and external threads are machined at the bottom of the handle. The bottom end of the handle 1 penetrates through a positioning hole in the fixed tray 2 and is fixedly connected with the fixed tray 2 through a valve core positioning nut 4.
And a groove is processed at the bottom end of the valve core positioning nut 4 and is matched with a convex part at the top end of the valve core on site.
The valve core connecting screws 3 are two, and the upper ends of the valve core connecting screws penetrate through the connecting holes in the fixed tray 2 to be connected with the fixed tray 2.
When the main steam safety valve is disassembled, the lower end of the valve core connecting screw 3 is connected with a threaded hole in the valve core on site, the bottom end groove of the valve core positioning nut 4 is pressed against the convex part at the top end of the valve core, the valve core connecting screw 3 is driven by the handle 1 to unscrew the valve clack, and the valve is convenient to operate, time-saving and labor-saving.
Claims (5)
1. The utility model provides a main steam relief valve clack remove device which characterized in that: comprises a handle (1), a fixed tray (2), a valve core connecting screw (3) and a valve core positioning nut (4);
a positioning hole is processed at the center of the fixed tray (2), and a pair of connecting holes are symmetrically processed at two sides of the positioning hole;
the bottom of the handle (1) is provided with an external thread;
the bottom end of the handle (1) penetrates through a positioning hole in the fixed tray (2) and is fixedly connected with the fixed tray (2) through a valve core positioning nut (4);
the two valve core connecting screws (3) are provided, and the upper ends of the two valve core connecting screws penetrate through the connecting holes in the fixed tray (2) to be connected with the fixed tray (2).
2. A main steam relief valve flap extraction device as claimed in claim 1, wherein: and a groove is processed at the bottom end of the valve core positioning nut (4) and is matched with a protruding part at the top end of the valve core on site.
3. A main steam relief valve flap extraction device as claimed in claim 2, wherein: when the main steam safety valve is disassembled, the lower end of the valve core connecting screw (3) is connected with a threaded hole on the valve core on site, and the bottom end groove of the valve core positioning nut (4) is propped against the convex part at the top end of the valve core.
4. A main steam relief valve flap extraction device as claimed in claim 3, wherein: the fixed tray (2) is in a disc shape.
5. A main steam relief valve flap extraction device as claimed in claim 3, wherein: the handle (1) is of a T-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022352958.0U CN213971002U (en) | 2020-10-21 | 2020-10-21 | Main steam safety valve clack remove device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022352958.0U CN213971002U (en) | 2020-10-21 | 2020-10-21 | Main steam safety valve clack remove device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213971002U true CN213971002U (en) | 2021-08-17 |
Family
ID=77257476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022352958.0U Active CN213971002U (en) | 2020-10-21 | 2020-10-21 | Main steam safety valve clack remove device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213971002U (en) |
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2020
- 2020-10-21 CN CN202022352958.0U patent/CN213971002U/en active Active
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