Tool for disassembling and assembling dial plate of Jacocos pressure gauge

Abstract

The utility model provides a tool for disassembling and assembling a Jacocos pressure gauge dial, which comprises an external disc and a torque handle connected to the external disc, the external disc is of a circular ring structure, the external disc is provided with eight grooves in one-to-one correspondence with protruding blocks of an instrument dial, the grooves are uniformly and circumferentially arranged, and the torque handle is connected to the external disc. The height difference between the inner side and the outer side of the outer disc is 6 mm. When the dial plate is disassembled and assembled, the tool provided by the utility model hardly causes any damage to the pressure gauge, the disassembly and assembly efficiency of the pressure gauge is also improved, the workload of maintenance personnel is greatly reduced, and the part replacement cost and the maintenance cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembling and assembling a dial of a YASCO pressure gauge, in particular to a tool for disassembling and assembling a dial of a YASCO pressure gauge. Background Art

[0002] The Qinsan Heavy Water Reactor Nuclear Power Plant introduced the Canadian CANDU reactor type, and a large number of pressure gauges produced by the American ASHCROFT Company were used in various systems. During use, these pressure gauges experienced drift, jamming and other faults due to the frequent fluctuations in the unit operating conditions.

[0003] When repairing the pressure gauge, the maintenance personnel found that because the pressure gauge is in a high temperature and high radiation environment all year round, the dial and the pressure gauge shell are firmly attached, making it extremely difficult to disassemble. In the past, when disassembling, violent knocking with tools such as screwdrivers could easily damage the dial, causing unnecessary economic losses to the company. Utility Model Content

[0004] The utility model aims to provide a tool for disassembling and assembling the dial of a Yasco pressure gauge, so as to solve the problem that the pressure gauge is easily damaged when the dial is disassembled in the traditional way.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A tool for disassembling and assembling the dial of a YASCO pressure gauge, comprising an external disc and a torque handle connected to the external disc, wherein the external disc is a circular ring structure, and is provided with grooves corresponding to the raised blocks of the instrument dial one by one, the number of the grooves is 8 and they are evenly arranged circumferentially, and the height difference between the inner and outer sides of the external disc is 6 mm.

[0007] As an practicable manner, the radius of the central hollow portion of the outer disk is 45 mm.

[0008] As an practicable manner, the groove has a length of 4 mm, a width of 4 mm, and a depth of 3 mm.

[0009] As an implementable manner, the number of the torque handles is 2.

[0010] As an implementable manner, the two torque handles are arranged at 180°.

[0011] As an implementable manner, the torque handle has a length of 100 mm and a diameter of 8 mm.

[0012] As an practicable manner, the torque handle is threadedly connected to the outer disc.

[0013] Compared with the prior art, the tool for disassembling and assembling the dial of the Yasco pressure gauge provided by the utility model has the following beneficial effects:

[0014] When disassembling and assembling the dial, the tool provided by the utility model hardly causes any damage to the pressure gauge, and also improves the efficiency of disassembling and assembling the pressure gauge, greatly reduces the workload of maintenance personnel, and saves parts replacement costs and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present utility model, the drawings required for the technical description are briefly introduced below.

[0016] Figure 1 A schematic diagram of the structure of a tool for disassembling and assembling the dial of a YASCO pressure gauge provided by the utility model.

[0017] Figure 2 The figure is the appearance of the Yasco pressure gauge provided by the utility model.

[0018] Description of reference numerals:

[0019] 11. External disc; 12. Torque handle; 13. Groove; 21. Instrument dial; 22. Instrument housing; 23. Raised block. DETAILED DESCRIPTION

[0020] The following is further explained in detail through specific implementation methods.

[0021] In order to facilitate understanding, we first briefly introduce the YASCO pressure gauge. Figure 2 As shown, the Yasco pressure gauge includes an instrument dial 21 and an instrument housing 22. Eight protrusions 23 are arranged circumferentially on the instrument dial 21. The eight protrusions 23 are evenly arranged, and the length of the protrusions 23 is 3 mm and the width is 3 mm. The radius of the instrument dial 21 is 48 mm (larger than the radius of the special tool to prevent it from being too tight and inconvenient to use during actual use), and it is recessed about 5 mm inward compared to the outermost side of the instrument housing 22. The instrument housing 22 slopes 45 degrees from the outermost side to the innermost side to the instrument dial 21.

[0022] The utility model specially designs a disassembly and assembly tool according to the structural characteristics of the Yasco pressure gauge. Figure 1 As shown, the utility model provides a tool for disassembling and assembling the dial of the Yasco pressure gauge, comprising an external disc 11 and a torque handle 12 connected to the external disc 11. The tool body is a circular cast iron part, which is hollowed out in the middle. The height difference between the inner and outer sides of the external disc 11 is 6mm, which is designed according to the dial characteristics of the instrument. The instrument dial 21 is recessed by about 5mm, and the height difference designed by the special tool is 6mm, which is convenient for practical use.

[0023] The middle part of the special tool of the utility model is hollowed out, and the whole is a circular ring structure, which fits with the pressure gauge when in use. The radius of the central hollow part is 45mm, which is slightly smaller than the inner diameter of the instrument dial 21, to prevent the clamping from being too tight, and is convenient for actual use on site.

[0024] The outer disc 11 is provided with grooves 13 corresponding to the protrusions 23 of the instrument dial 21, and the number of the grooves 13 also corresponds to the protrusions 23, that is, 8 grooves 13 are evenly arranged in the circumference. The grooves 13 are 4 mm long, 4 mm wide, and 3 mm deep.

[0025] The length of the torque handle 12 is 100 mm and the diameter is 8 mm. The two torque handles 12 are arranged at 180°. The length of the torque handle 12 can be adjusted according to actual conditions and can be extended or shortened.

[0026] Preferably, the special tool of the utility model is made of integrated cast iron and is manufactured by mechanical processing. The torque handle 12 is connected to the external disc 11 through a tapered hole on the special tool body and through threads.

[0027] When repairing the YASCO pressure gauge, it is only necessary to match the groove 13 on the outer disk 11 with the raised block 23 of the instrument dial 21 one by one, and turn the torque handle counterclockwise to remove the dial, and then further repair the pressure gauge according to the actual cause of the fault.

[0028] After the repair of the YASCO pressure gauge is completed, when reinstalling it, you need to manually fix the dial clockwise on the pressure gauge body. When it cannot be turned by hand, use this tool to turn it clockwise to fix the dial.

[0029] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A tool for disassembling and assembling the dial of a Yasko pressure gauge, characterized in that: The invention comprises an external disk (11) and a torque handle (12) connected to the external disk (11); the external disk (11) is a circular ring structure; the external disk (11) is provided with grooves (13) corresponding one-to-one to the raised blocks (23) of the instrument dial (21); the number of the grooves (13) is 8 and they are evenly arranged in the circumference; the height difference between the inner and outer sides of the external disk (11) is 6 mm.

2. The tool for disassembling and assembling the dial of the YASCO pressure gauge according to claim 1, characterized in that: The radius of the central hollow portion of the outer disc (11) is 45 mm.

3. The tool for disassembling and assembling the dial of the YASCO pressure gauge according to claim 1, characterized in that: The groove (13) has a length of 4 mm, a width of 4 mm and a depth of 3 mm.

4. The tool for disassembling and assembling the dial of the YASCO pressure gauge according to claim 1, characterized in that: The number of the torque handles (12) is 2.

5. The tool for disassembling and assembling the dial of the YASCO pressure gauge according to claim 4, characterized in that: The two torque handles (12) are arranged at 180 degrees.

6. The tool for disassembling and assembling the dial of the YASCO pressure gauge according to claim 1 or 4, characterized in that: The torque handle (12) has a length of 100 mm and a diameter of 8 mm.

7. The tool for disassembling and assembling the dial of the YASCO pressure gauge according to claim 1, characterized in that: The torque handle (12) is threadedly connected to the outer disc (11).

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