An underwater push-type valve switch device for nuclear power plants

Abstract

The utility model relates to the field of valve switch devices, and in particular to an underwater push-type valve switch device for nuclear power plants. The valve switch device aims to solve the technical problems of using traditional rotating handles to switch valves in the prior art, which are difficult to operate and require a lot of physical effort. An underwater push-type valve switch device for a nuclear power plant includes a connecting rod, a sleeve, a pin assembly, a nut A, and a core shaft assembly. The operator of the utility model can use this tool to remotely operate the ball valve on the underwater instrument to open and close the ball valve; the tool needs to be used in conjunction with the irradiation monitoring tube operating tool (FH56). Compared with the previous rotating handle, it requires less operating space, is easier for personnel to operate, and has more precise control over the rotation angle.

Description

Technical Field

[0001] The utility model relates to the field of valve switch devices, in particular to an underwater press-type valve switch device used in a nuclear power plant. Background Art

[0002] A nuclear power plant is a facility that uses nuclear reactions to generate electricity. They are usually composed of nuclear reactors, cooling systems, generators and safety systems, which are used to control and manage the energy release process of nuclear reactions. Nuclear power plants have some advantages over traditional thermal power plants, such as high fuel utilization and low carbon emissions, but they also face nuclear safety issues.

[0003] Because nuclear power plants have underwater instruments and equipment that need to close valves, but operators cannot enter to operate them, they need to operate the valves on the water with the help of tools. Currently, the main method used is to turn the handle to open or close the valve. This design has some disadvantages. The operator applies a certain torque or force to open or close the valve, which is difficult to operate and consumes a lot of physical energy, especially in a small environment. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an underwater push-type valve switch device for use in nuclear power plants, which aims to solve the technical problems of using traditional rotating handles to open and close valves in the prior art, which are difficult to operate and require a lot of physical effort.

[0005] The technical scheme of the utility model is: an underwater push-type valve switch device for a nuclear power plant, comprising a connecting rod, a jacket, a pin assembly, a nut A, and a core shaft assembly; a jacket is arranged on the outer side of the connecting rod; a pin assembly is installed at the lower end of the connecting rod and the jacket; a core shaft assembly is installed at the lower end of the connecting rod; and a nut A is threadedly connected to a threaded area at the upper end of the connecting rod.

[0006] Preferably, the underwater push-type valve switch device is connected to the radiation supervision pipe operating tool (FH56) through a connecting rod, the bolt of the core shaft assembly is inserted into the gap of the handwheel and fixed to the ball valve, and the staff on the operating platform presses the radiation supervision pipe operating tool to drive the connecting rod of the underwater push-type valve switch device up and down, so that the core shaft assembly controls the handwheel on the ball valve to realize the ball valve switching operation.

[0007] Preferably, the pin assembly includes a pin body, a copper sleeve, a nut B and a washer; a copper sleeve is provided at the front end of the outer side of the pin body; a nut B is threadedly connected to the threaded area at the front end of the pin body; a washer is provided between the nut B and the copper sleeve.

[0008] Preferably, the mandrel assembly comprises a mandrel body and bolts; a group of circular holes equidistantly distributed in an annular manner is opened at the upper end of the mandrel body; and bolts are installed inside the group of circular holes of the mandrel body.

[0009] Beneficial effects of the utility model:

[0010] The operator of the utility model can use this tool to remotely operate the ball valve on the underwater instrument to open and close the ball valve; the tool needs to be used in conjunction with the irradiation monitoring tube operating tool (FH56). Compared with the previous rotating handle, the operating space requirement is less, the operator is easier to operate, and the control of the rotation angle is more precise. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 What is shown is a three-dimensional structural schematic diagram of the valve switch device of the utility model;

[0012] Figure 2 What is shown is a schematic diagram of the front structure of the valve switch device of the utility model;

[0013] Figure 3 The schematic diagram of the structure of the core shaft assembly of the valve switch device of the utility model is shown;

[0014] Figure 4 Shown is another schematic diagram of the structure of the core shaft assembly of the valve switch device of the utility model;

[0015] Figure 5 Shown is another schematic diagram of the structure of the pin assembly of the valve switch device of the utility model;

[0016] Figure 6 Shown is a schematic diagram of the assembly of the valve switch device of the utility model with a ball valve.

[0017] Explanation of the reference numerals: 1. connecting rod; 2. outer sleeve; 3. pin assembly; 301. pin body; 302. copper sleeve; 303. nut B; 304. washer; 4. nut A; 5. spindle assembly; 101. spindle body; 102. bolt. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] See also Figure 1 , 2 6. The utility model provides an embodiment: an underwater push-type valve switch device for a nuclear power plant, comprising a connecting rod 1, a sleeve 2, a pin assembly 3, a nut A4, and a core shaft assembly 5; the outer side of the connecting rod 1 is provided with a sleeve 2; the pin assembly 3 is installed at the lower end of the connecting rod 1 and the sleeve 2; the core shaft assembly 5 is installed at the lower end of the connecting rod 1; the nut A4 is threadedly connected to the threaded area at the upper end of the connecting rod 1.

[0020] See also Figure 3-4In this embodiment, the spindle assembly 5 includes a spindle body 501 and a bolt 502; a circular hole group equidistantly distributed in an annular shape is opened at the upper end of the spindle body 501; and the bolt 502 is installed inside the circular hole group of the spindle body 501.

[0021] See also Figure 5 In this embodiment, the pin assembly 3 includes a pin body 301, a copper sleeve 302, a nut B303 and a washer 304; a copper sleeve 302 is provided at the front end of the outer side of the pin body 301; a nut B303 is threadedly connected to the front threaded area of ​​the pin body 301; a washer 304 is provided between the nut B303 and the copper sleeve 302.

[0022] During operation, the underwater push-type valve switch device is connected to the irradiation supervision pipe operating tool through the connecting rod 1, the bolt 502 of the core shaft assembly 5 is inserted into the gap of the handwheel and fixed to the ball valve. The staff on the operating platform presses the irradiation supervision pipe operating tool to drive the connecting rod 1 of the underwater push-type valve switch device to move up and down, so that the core shaft assembly 5 controls the handwheel on the ball valve to realize the ball valve switch operation.

[0023] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. An underwater push-type valve switch device for a nuclear power plant, comprising a connecting rod (1); characterized in that: The invention also comprises an outer sleeve (2), a pin assembly (3), a nut A (4), and a spindle assembly (5); the outer sleeve (2) is arranged on the outside of the connecting rod (1); the pin assembly (3) is installed at the lower end of the connecting rod (1) and the outer sleeve (2); the spindle assembly (5) is installed at the lower end of the connecting rod (1); and the nut A (4) is threadedly connected to the threaded area at the upper end of the connecting rod (1).

2. The underwater push-type valve switch device for a nuclear power plant according to claim 1, characterized in that: The pin shaft assembly (3) comprises a pin shaft body (301), a copper sleeve (302), a nut B (303) and a washer (304); the copper sleeve (302) is arranged at the front end of the outer side of the pin shaft body (301); the nut B (303) is threadedly connected to the front threaded area of ​​the pin shaft body (301); and the washer (304) is arranged between the nut B (303) and the copper sleeve (302).

3. The underwater push-type valve switch device for a nuclear power plant according to claim 1, characterized in that: The spindle assembly (5) comprises a spindle body (501) and bolts (502); a group of circular holes equidistantly distributed in an annular shape is opened at the upper end of the spindle body (501); and bolts (502) are installed inside the group of circular holes of the spindle body (501).

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