Nuclear power station voltage stabilizer manhole opening tool

Abstract

The utility model discloses a nuclear power station voltage stabilizer manhole opening tool, and relates to the technical field of nuclear power machinery, the nuclear power station voltage stabilizer manhole opening tool comprises a voltage stabilizer upper sealing head, a fixed base is fixed on the voltage stabilizer upper sealing head, the top of the fixed base is fixedly connected with a fixed frame, the fixed frame comprises a plurality of fixed rods fixed on the fixed base, and the fixed rods are fixed on the fixed base. The tops of the multiple fixing rods are fixedly connected with a connecting frame, and a voltage stabilizer manhole cover plate is arranged above the fixing base and comprises a cover plate body. The fixing frame is arranged on the fixing base, the guide sleeve is arranged on the manhole cover plate of the voltage stabilizer, the guide sleeve is connected to the fixing rod of the fixing frame in a sleeved mode in the using process, and the manhole cover plate of the voltage stabilizer can be driven to be stably lifted through the lifter installed on the fixing frame. And by arranging a guide sleeve and a fixing rod, the stability of the manhole cover plate of the pressure stabilizer during lifting can be improved, the using effect of the device is improved, and the practicability of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power machinery, in particular to a manhole opening tool for a voltage stabilizer in a nuclear power station. Background Art

[0002] The manhole cover of the voltage stabilizer of a certain unit is at an angle of 45° to the horizontal direction. The traditional method of opening the manhole cover of the voltage stabilizer adopts a hand winch and a traditional lifting device. This method requires manual adjustment of the length of the spiral buckle, which is time-consuming and labor-intensive, increases unnecessary radiation dose to personnel, and cannot ensure that the manhole cover of the voltage stabilizer is lifted upward steadily at 45°. It is easy to cause bumps or damage to the sealing surface of the manhole cover during implementation. At the same time, when the manhole cover is not parallel to the manhole seat, it is easy for the guide rod to exert force on the bolt hole, making it difficult to lift the manhole cover.

[0003] Therefore, in order to reduce the working time of personnel in radioactive areas and improve the working efficiency of the manhole cover of the voltage regulator, it is necessary to provide an efficient and simple voltage regulator manhole cover opening tool to solve the above problems. Therefore, the utility model proposes a nuclear power plant voltage regulator manhole opening tool. Utility Model Content

[0004] Technical issues solved

[0005] The utility model aims to make up for the deficiencies of the prior art and provides a manhole opening tool for a nuclear power station voltage regulator.

[0006] Technical Solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nuclear power plant pressurizer manhole opening tool, comprising a pressurizer upper head, a fixed base is fixed on the pressurizer upper head, a fixed frame is fixedly connected to the top of the fixed base, the fixed frame comprises a fixed rod fixed to the fixed base, there are multiple fixed rods, the tops of the multiple fixed rods are fixedly connected to the connecting frame, a pressurizer manhole cover is arranged above the fixed base, the pressurizer manhole cover comprises a cover body, a guide sleeve is fixedly connected to the edge of the cover body, and the top of the fixed frame is fixedly installed There is a lifter, the output end of which is fixedly connected to the manhole cover of the voltage stabilizer. A fixing frame is arranged on the fixed base, and a guide sleeve is arranged on the manhole cover of the voltage stabilizer. When in use, the guide sleeve is sleeved on the fixing rod of the fixing frame, and the manhole cover of the voltage stabilizer can be stably lifted through the lifter installed on the fixing frame. The setting of the guide sleeve and the fixing rod can improve the stability of the manhole cover of the voltage stabilizer during lifting, improve the use effect of the device, and enhance the practicality of the device. The lifting height of the manhole cover of the voltage stabilizer can be stably lifted by a single lifter. It is easy to use, low cost, and has a good use effect.

[0008] Preferably, the guide sleeve is sleeved on the fixing rod, and the guide sleeve is adapted to the fixing rod.

[0009] Preferably, the lifter is fixedly mounted on a connecting frame, and a through hole for mounting an output end of the lifter is provided inside the connecting frame.

[0010] Preferably, the output end of the lifter is connected to the manhole cover of the voltage stabilizer via a pin structure, the pin structure includes a pin hole opened at the output end of the lifter, the pin structure also includes a fixed shaft fixed on the manhole cover of the voltage stabilizer, and the fixed shaft can rotate in the pin hole.

[0011] Preferably, the lifter is a hydraulic cylinder or an electric telescopic rod.

[0012] Preferably, there are three fixing rods.

[0013] Beneficial effects:

[0014] Compared with the prior art, the nuclear power plant pressurizer manhole opening tool has the following beneficial effects:

[0015] 1. The utility model arranges a fixing frame on a fixed base and arranges a guide sleeve on the manhole cover of the voltage stabilizer. When in use, the guide sleeve is sleeved on the fixing rod of the fixing frame, and the manhole cover of the voltage stabilizer can be stably lifted through the lifter installed on the fixing frame. The arrangement of the guide sleeve and the fixing rod can improve the stability of the manhole cover of the voltage stabilizer when it is lifted, improve the use effect of the device, and enhance the practicability of the device.

[0016] Second, the utility model can stably raise the manhole cover plate of the voltage stabilizer by a single lifter, is easy to use, has low cost, and has good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the fixed base and the fixed frame of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the fixing frame of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the pin hole of the utility model.

[0021] In the figure:

[0022] 1. Upper head of the voltage stabilizer; 2. Fixed base; 3. Fixed frame; 301. Fixed rod; 302. Connecting frame; 3021. Through hole; 4. Manhole cover of voltage stabilizer; 401. Cover body; 402. Guide sleeve; 403. Fixed shaft; 5. Lifter; 501. Pin hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 to Figure 4 As shown, the utility model provides a technical solution: a manhole opening tool for a nuclear power plant stabilizer includes a stabilizer upper head 1, a fixed base 2 is fixed on the stabilizer upper head 1, a fixed frame 3 is fixedly connected to the top of the fixed base 2, the fixed frame 3 includes a fixed rod 301 fixed on the fixed base 2, there are multiple fixed rods 301, the tops of the multiple fixed rods 301 are fixedly connected to a connecting frame 302, a stabilizer manhole cover plate 4 is arranged above the fixed base 2, the stabilizer manhole cover plate 4 includes a cover plate body 401, a guide sleeve 402 is fixedly connected to the edge of the cover plate body 401, and a lifter 5 is fixedly installed on the top of the fixed frame 3, and the lifter 5 is a hydraulic cylinder or an electric The telescopic rod and the output end of the lifter 5 are fixedly connected to the manhole cover plate 4 of the voltage stabilizer. A fixing frame 3 is arranged on the fixed base 2, and a guide sleeve 402 is arranged on the manhole cover plate 4 of the voltage stabilizer. When in use, the guide sleeve 402 is sleeved on the fixing rod 301 of the fixing frame 3, and the lifter 5 installed on the fixing frame 3 can drive the manhole cover plate 4 of the voltage stabilizer to be stably lifted. The setting of the guide sleeve 402 and the fixing rod 301 can improve the stability of the manhole cover plate 4 of the voltage stabilizer when it is lifted, improve the use effect of the device, and enhance the practicality of the device. The lifting height of the manhole cover plate 4 of the voltage stabilizer can be stably lifted by a single lifter 5. It is easy to use, low cost, and has a good use effect.

[0025] Please pay attention to Figure 2 and Figure 3 The guide sleeve 402 is sleeved on the fixed rod 301, the guide sleeve 402 is adapted to the fixed rod 301, there are three fixed rods 301, the lifter 5 is fixedly installed on the connecting frame 302, and a through hole 3021 for installing the output end of the lifter 5 is opened inside the connecting frame 302.

[0026] Please pay attention to Figure 3 and Figure 4The output end of the lifter 5 is connected to the manhole cover plate 4 of the voltage stabilizer through a pin structure. The pin structure includes a pin hole 501 opened at the output end of the lifter 5. The pin structure also includes a fixed shaft 403 fixed on the manhole cover plate 4 of the voltage stabilizer. The fixed shaft 403 can rotate in the pin hole 501.

[0027] Working principle: a fixing frame 3 is arranged on the fixing base 2, and a guide sleeve 402 is arranged on the manhole cover plate 4 of the voltage stabilizer. When in use, the guide sleeve 402 is sleeved on the fixing rod 301 of the fixing frame 3, and the manhole cover plate 4 of the voltage stabilizer can be stably lifted through the lifting device 5 installed on the fixing frame 3. The setting of the guide sleeve 402 and the fixing rod 301 can improve the stability of the manhole cover plate 4 of the voltage stabilizer when it is lifted. The lifting height of the manhole cover plate 4 of the voltage stabilizer can be stably lifted through a single lifting device 5. It is easy to use, low cost and good use effect.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manhole opening tool for a nuclear power plant pressurizer, comprising an upper head (1) for a pressurizer, characterized in that: A fixed base (2) is fixed on the upper head (1) of the voltage regulator, a fixed frame (3) is fixedly connected to the top of the fixed base (2), the fixed frame (3) comprises a fixed rod (301) fixed to the fixed base (2), there are a plurality of fixed rods (301), the tops of the plurality of fixed rods (301) are fixedly connected to a connecting frame (302), a voltage regulator manhole cover (4) is arranged above the fixed base (2), the voltage regulator manhole cover (4) comprises a cover body (401), a guide sleeve (402) is fixedly connected to the edge of the cover body (401), a lifter (5) is fixedly installed on the top of the fixed frame (3), the output end of the lifter (5) is fixedly connected to the voltage regulator manhole cover (4).

2. The nuclear power plant pressurizer manhole opening tool according to claim 1, characterized in that: The guide sleeve (402) is sleeved on the fixing rod (301), and the guide sleeve (402) is adapted to the fixing rod (301).

3. The nuclear power plant pressurizer manhole opening tool according to claim 1, characterized in that: The lifter (5) is fixedly mounted on the connecting frame (302), and a through hole (3021) for mounting the output end of the lifter (5) is provided inside the connecting frame (302).

4. The nuclear power plant pressurizer manhole opening tool according to claim 1, characterized in that: The output end of the lifter (5) is connected to the manhole cover plate (4) of the voltage stabilizer via a pin structure, wherein the pin structure comprises a pin hole (501) provided at the output end of the lifter (5), and the pin structure further comprises a fixed shaft (403) fixed on the manhole cover plate (4) of the voltage stabilizer, wherein the fixed shaft (403) is rotatable in the pin hole (501).

5. The nuclear power plant pressurizer manhole opening tool according to claim 1, characterized in that: The lifter (5) is a hydraulic cylinder or an electric telescopic rod.

6. The nuclear power plant pressurizer manhole opening tool according to claim 1, characterized in that: There are three fixing rods (301).

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