Short-circuit wire expansion piece for electrical test of high-voltage power equipment

Abstract

The utility model relates to the technical field of short-circuit wire expansion pieces, in particular to a short-circuit wire expansion piece for an electrical test of high-voltage power equipment, which comprises a mounting pipe, an expansion piece and a sealing device, one end of the mounting pipe is mounted at one end of the expansion piece through a bolt, and the sealing device is fixedly connected to the outer side of one end of the expansion piece and comprises a flange. A sealing ring is mounted on the inner side of the flange, a sealing pipe is fixedly connected to the outer side of the sealing ring, a mounting hole is formed in the inner side of the flange, a mounting device is rotationally connected to one side of the flange and comprises a mounting ring, a limiting ring is fixedly connected to one side of the mounting ring, an inner gear ring is fixedly connected to the inner side of the mounting ring, and an outer gear ring is connected to the inner side of the inner gear ring in a meshed mode. According to the sealing ring, the mounting ring, the inner gear ring and the outer gear ring are arranged, and the outer gear ring rotates clockwise and anticlockwise through the rotating rod, so that the outer gear ring can rotate, the sealing ring can be more conveniently mounted and replaced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of short-circuit expansion joints, in particular to a short-circuit expansion joint used for electrical testing of high-voltage power equipment. Background Art

[0002] The short-circuit expansion joint used for electrical testing of high-voltage power equipment is also called expansion joint or compensator. It can expand and contract axially within a certain range, and can overcome the offset caused by different axial directions of pipeline docking within a certain angle. It can greatly facilitate the installation and disassembly of valve pipelines. It can expand and contract freely within the allowable expansion amount of the pipeline. Once it exceeds its maximum expansion amount, it acts as a limit to ensure the safe operation of the pipeline. It is mainly to ensure the safe operation of the pipeline.

[0003] After the existing short-circuit expansion joint is used in high-voltage power equipment, the high-voltage power equipment will generate a certain high temperature during operation. The sealing ring installed inside the short-circuit expansion joint is under pressure during use, and the sealing ring will be aged rapidly if it is exposed to high temperature for a long time. If the sealing ring needs to be replaced, the short-circuit expansion joint is usually installed with multiple bolts, which makes replacement inconvenient, thereby affecting work efficiency. Therefore, in view of the above problem, a short-circuit expansion joint for electrical testing of high-voltage power equipment is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a short-circuit expansion joint for electrical testing of high-voltage power equipment, so as to solve the problem that high-voltage power equipment will generate a certain high temperature during operation, and the sealing ring will be aged more rapidly if it is exposed to high temperature for a long time. If replacement is required, the short-circuit expansion joint is usually installed with multiple bolts, which makes replacement inconvenient, thereby affecting work efficiency.

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

[0006] A short-circuit expansion joint for electrical testing of high-voltage power equipment comprises a mounting tube, an expansion joint and a sealing device, wherein one end of the mounting tube is mounted on one end of the expansion joint by bolts, a sealing device is fixedly connected to the outside of one end of the expansion joint, the sealing device comprises a flange, a sealing ring is mounted on the inside of the flange, a sealing tube is fixedly connected to the outside of the sealing ring, a mounting hole is provided on the inside of the flange, a mounting device is rotatably connected to one side of the flange, the mounting device comprises a mounting ring, a limiting ring is fixedly connected to one side of the mounting ring, an inner toothed ring is fixedly connected to the inside of the mounting ring, an outer toothed ring is meshingly connected to the inside of the inner toothed ring, a notch is provided on the outside of the mounting ring, a rotating rod is rotatably connected to the inside of the notch, a block is fixedly connected to the inside of the notch, and a pressure plate is mounted on the outside of the expansion joint.

[0007] Preferably, one end of the pressure plate is installed by bolts on the inner side of the flange, one side of the pressure plate is tightly attached to the sealing ring, and the diameter of the pressure plate is equal to the diameter of the sealing ring.

[0008] Preferably, the outer gear ring is installed on the outside of the bolts of the sealing device, and a plurality of the outer gear rings are provided, and the outer gear rings correspond one-to-one to the bolts on the outside of the sealing device.

[0009] Preferably, one end of the sealing tube is in a semicircular shape, and a plurality of the sealing tubes are provided. The sealing tubes are evenly and equidistantly distributed on the outside of the sealing ring, and the sealing tubes are arranged in an array.

[0010] Preferably, the mounting holes are cylindrical in shape, the mounting holes are arranged in an array, the sealing tubes and the mounting holes are in close contact with each other, the sealing tubes are installed inside the mounting holes, and the mounting holes and the sealing tubes correspond one to one.

[0011] Preferably, the shape of the rotating rod is T-shaped, the rotating angle of the rotating rod is 90°, and the rotating rod is parallel to the bottom of the slot when it is engaged with the inner side of the block.

[0012] Preferably, the shape of the clamping block is U-shaped, the inner side of the clamping block is arranged as a major arc, and the inner side of the clamping block and the outer side of the rotating rod are engaged with each other.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, by providing the installation ring, the inner gear ring and the outer gear ring, the outer gear ring can be rotated clockwise and counterclockwise by the rotating rod, so that the outer gear ring can be rotated, so that the sealing ring can be installed and replaced more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall disassembled structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the installation position structure of the sealing ring of the utility model;

[0017] Figure 3 This is a schematic diagram of the flange cross-section structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the installation position structure of the outer gear ring of the utility model;

[0019] Figure 5 For this utility model Figure 4 Schematic diagram of the structure at point A in the middle.

[0020] In the figure: 1. mounting tube; 2. expansion joint; 3. sealing device; 31. flange; 32. sealing ring; 33. sealing tube; 34. mounting hole; 4. mounting device; 41. mounting ring; 42. limiting ring; 43. inner gear ring; 44. outer gear ring; 45. notch; 46. rotating rod; 47. block; 5. pressure plate. DETAILED DESCRIPTION

[0021] 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.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] A short-circuit expansion joint for electrical testing of high-voltage power equipment comprises a mounting tube 1, an expansion joint 2 and a sealing device 3, wherein one end of the mounting tube 1 is mounted on one end of the expansion joint 2 by bolts, the sealing device 3 is fixedly connected to the outer side of the expansion joint 2, the sealing device 3 comprises a flange 31, a sealing ring 32 is mounted on the inner side of the flange 31, a sealing tube 33 is fixedly connected to the outer side of the sealing ring 32, a mounting hole 34 is provided on the inner side of the flange 31, a mounting device 4 is rotatably connected to one side of the flange 31, the mounting device 4 comprises a mounting ring 41, a limiting ring 42 is fixedly connected to one side of the mounting ring 41, an inner toothed ring 43 is fixedly connected to the inner side of the mounting ring 41, an outer toothed ring 44 is meshedly connected to the inner side of the inner toothed ring 43, a notch 45 is provided on the outer side of the mounting ring 41, a rotating rod 46 is rotatably connected to the inner side of the notch 45, a clamping block 47 is fixedly connected to the inner side of the notch 45, and a pressure plate 5 is mounted on the outer side of the expansion joint 2.

[0025] As a further implementation scheme of the above technical scheme: by setting the pressure plate 5, one end of the pressure plate 5 is installed by the bolts on the inner side of the flange 31, one side of the pressure plate 5 is tightly attached to the sealing ring 32, and the diameter of the pressure plate 5 is equal to the diameter of the sealing ring 32. Such a setting can make the overall structure more reasonable and easy to install;

[0026] As a further implementation scheme of the above technical scheme: by setting an outer toothed ring 44, the outer toothed ring 44 is installed on the outer side of the bolt of the sealing device 3, and a plurality of outer toothed rings 44 are provided, and the outer toothed rings 44 correspond to the bolts on the outer side of the sealing device 3 one by one, so that the sealing ring 32 can be conveniently installed and replaced;

[0027] As a further implementation scheme of the above technical scheme: through the sealing tube 33, one end of the sealing tube 33 is in the shape of a semicircle, a plurality of sealing tubes 33 are provided, and the sealing tubes 33 are evenly and equidistantly distributed on the outside of the sealing ring 32, and the sealing tubes 33 are arranged in an array. When the sealing ring 32 and the sealing tube 33 arranged on the inner side of the sealing device 3 are damaged, an abnormal situation will occur, which is convenient for reminding the staff;

[0028] As a further implementation scheme of the above technical scheme: by setting the mounting hole 34, the mounting hole 34 is cylindrical in shape, the mounting holes 34 are arranged in an array, the sealing tube 33 and the mounting hole 34 are in close contact with each other, the sealing tube 33 is installed inside the mounting hole 34, the mounting hole 34 and the sealing tube 33 correspond one to one, and the staff will observe the condition of the sealing ring 32 according to the mounting hole 34 during the inspection, so as to replace it in time;

[0029] As a further implementation scheme of the above technical scheme: by setting a rotating rod 46, the shape of the rotating rod 46 is T-shaped, the rotating angle of the rotating rod 46 is 90°, and the rotating rod 46 is parallel to the bottom of the slot 45 when it is engaged with the inner side of the block 47. The setting of the rotating rod 46 can make the installation device 4 better installed;

[0030] As a further implementation scheme of the above technical scheme: by setting a clamping block 47, the shape of the clamping block 47 is U-shaped, the inner side of the clamping block 47 is set as a major arc, and the inner side of the clamping block 47 and the outer side of the rotating rod 46 are engaged with each other. Such a setting can make the rotating rod 46 easy to use.

[0031] Working process: Before installing the short-circuit expansion joint 2 on high-voltage power equipment, first loosen the bolts on the pressure plate of the expansion device, pull the expansion joint 2 to the installation length, and then tighten it with the diagonal method. There must be no deflection. When it is used overhead, the corresponding fixing brackets must be installed at both ends. The mounting tube 1 is fixed upward with the help of a lifting tool, and is accurately fixed according to the flange 31 on the outside of the expansion joint 2. Then, the expansion joint 2 and the mounting tube 1 are installed with bolts and nuts. Then, the sealing ring 32 is installed at the end connected to the expansion joint 2. Then, the pressure plate 5 is installed on the outside of the expansion joint 2. One end of the pressure plate 5 is tightly attached to the sealing ring 32, and then it is installed and fixed with bolts and nuts. The rotating rod 46 is removed from the block 47. The outer ring 44 is rotated by the inner gear ring 43, and the outer ring 44 is rotated by the inner gear ring 43. At this time, the outer ring 44 is used to fix the pressure plate 5 according to the installation requirements, so that the expansion joint 2 can be installed conveniently. After the installation is completed, the sealing ring 32 and the sealing tube 33 arranged on the inner side of the sealing device 3 will be abnormal when they are damaged. During the inspection, the staff will observe the condition of the sealing ring 32 according to the installation hole 34 so as to replace it in time.

[0032] Although the 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 short-circuit expansion joint for electrical testing of high-voltage power equipment, comprising a mounting tube (1), an expansion joint (2) and a sealing device (3), characterized in that: One end of the mounting tube (1) is mounted on one end of the expansion joint (2) by means of bolts. A sealing device (3) is fixedly connected to the outside of one end of the expansion joint (2). The sealing device (3) comprises a flange (31). A sealing ring (32) is mounted on the inside of the flange (31). A sealing tube (33) is fixedly connected to the outside of the sealing ring (32). A mounting hole (34) is provided on the inside of the flange (31). A mounting device (4) is rotatably connected to one side of the flange (31). The mounting device (4) The mounting ring (41) comprises a mounting ring (41), one side of the mounting ring (41) is fixedly connected to a limit ring (42), the inner side of the mounting ring (41) is fixedly connected to an inner gear ring (43), the inner side of the inner gear ring (43) is meshingly connected to an outer gear ring (44), the outer side of the mounting ring (41) is provided with a notch (45), the inner side of the notch (45) is rotatably connected to a rotating rod (46), the inner side of the notch (45) is fixedly connected to a clamping block (47), and a pressure plate (5) is installed on the outer side of the telescopic device (2).

2. A short-circuit retractor for electrical testing of high-voltage power equipment according to claim 1, characterized in that: One end of the pressure plate (5) is installed by means of bolts on the inner side of the flange (31), one side of the pressure plate (5) is in close contact with the sealing ring (32), and the diameter of the pressure plate (5) is equal to the diameter of the sealing ring (32).

3. A short-circuit retractor for electrical testing of high-voltage power equipment according to claim 1, characterized in that: The outer toothed ring (44) is installed on the outside of the bolts of the sealing device (3). A plurality of the outer toothed rings (44) are provided, and the outer toothed rings (44) correspond one to one with the bolts on the outside of the sealing device (3).

4. A short-circuit retractor for electrical testing of high-voltage power equipment according to claim 1, characterized in that: One end of the sealing tube (33) is in the shape of a semicircle. A plurality of the sealing tubes (33) are provided. The sealing tubes (33) are evenly and equidistantly distributed outside the sealing ring (32). The sealing tubes (33) are arranged in an array.

5. A short-circuit retractor for electrical testing of high-voltage power equipment according to claim 1, characterized in that: The mounting holes (34) are cylindrical in shape, the mounting holes (34) are arranged in an array, the sealing tubes (33) and the mounting holes (34) are closely attached to each other, the sealing tubes (33) are installed inside the mounting holes (34), and the mounting holes (34) and the sealing tubes (33) correspond one to one.

6. A short-circuit retractor for electrical testing of high-voltage power equipment according to claim 1, characterized in that: The shape of the rotating rod (46) is T-shaped, the rotating angle of the rotating rod (46) is 90 degrees, and the rotating rod (46) is parallel to the bottom of the slot (45) when it is engaged with the inner side of the clamping block (47).

7. A short-circuit retractor for electrical testing of high-voltage power equipment according to claim 1, characterized in that: The shape of the clamping block (47) is U-shaped, the inner side of the clamping block (47) is arranged as a major arc, and the inner side of the clamping block (47) and the outer side of the rotating rod (46) are mutually engaged.

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