A 10kV zinc oxide arrester test operating table

Abstract

The invention discloses a 10kV zinc oxide lightning arrester test operating table, comprising a box body, wherein tension spring type flat contacts are symmetrically arranged on the upper part of the interior of the box body, and two tension spring type flat contacts on each side are arranged side by side and do not contact each other, and the tension spring type flat contacts are fixedly connected to the box body through a first fixing bolt, and the outer side surface of the first fixing bolt is threadedly connected with a third clamping nut, and a receiving plate is arranged below the tension spring type flat contact, and a first terminal and a second terminal are respectively arranged inside the box body, and the outer side surface of one end of the first terminal is threadedly connected with the second clamping nut, and the outer side surface of one end of the second terminal is threadedly connected with the first clamping nut, and the first terminal and the second terminal are respectively connected to the tension spring type flat contacts on both sides through connecting lines. The 10kV zinc oxide lightning arrester test operating table can effectively improve the test efficiency, eliminate errors in the test process, and reduce the test time, and is not restricted by the site, which greatly improves the safety of use.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment, in particular to a 10kV zinc oxide arrester test operating table. Background Art

[0002] Lightning arrester is one of the main equipment in the power system. It is mainly used to protect electrical equipment from high transient overvoltage hazards during lightning strikes and limit the follow-on time. It is also an electrical appliance that limits the follow-on amplitude.

[0003] When testing the 10kV zinc oxide arrester, it is necessary to remove it from the switch cabinet and place it on a platform with sufficient safe space. However, due to the lack of a dedicated test bench, temporary platforms such as foam boards and insulating boards are generally used for testing, which takes up a lot of time. In addition, due to the limitations of the construction environment, there is uncertainty in the construction materials of the temporary test bench, which leads to test errors during the experiment. Multiple tests are required to pass the test, which greatly increases the test time and reduces work efficiency. In addition, the temporary test platform lacks safety. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a 10kV zinc oxide lightning arrester test operating table, which can effectively improve the test efficiency, eliminate errors in the test process, reduce the test time, and is not restricted by the site, thereby increasing the safety of use and effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a 10kV zinc oxide lightning arrester test operating table, comprising a box body, wherein tension spring type flat contacts are symmetrically arranged on the upper part of the interior of the box body, and two tension spring type flat contacts on each side are arranged side by side and do not touch each other, and the tension spring type flat contacts are fixedly connected to the box body through a first fixing bolt, and the outer side surface of the first fixing bolt is threadedly connected with a third clamping nut, and a receiving plate is provided below the tension spring type flat contact, and a first terminal and a second terminal are respectively provided inside the box body, and the outer side surface of one end of the first terminal is threadedly connected with the second clamping nut, and the outer side surface of one end of the second terminal is threadedly connected with the first clamping nut, and the first terminal and the second terminal are respectively connected to the tension spring type flat contacts on both sides through connecting lines.

[0006] As a preferred technical solution of the present invention, the box body is a square structure and is made of epoxy resin material.

[0007] As a preferred technical solution of the present invention, a supporting leg is provided below the box body, and the number of the supporting legs is four, and the four supporting legs are evenly distributed around the lower surface of the box body.

[0008] As a preferred technical solution of the present invention, the receiving plate is fixedly connected to the box body by a second fixing bolt, and the receiving plate is made of insulating material.

[0009] As a preferred technical solution of the present invention, the tension spring type flat contact is an eight-piece contact.

[0010] As a preferred technical solution of the present invention, the connecting wire is a copper core soft wire.

[0011] As a preferred technical solution of the present invention, a through hole is provided above the side plate on which the tension spring type flat contact is installed inside the box.

[0012] As a preferred technical solution of the present invention, the first terminal is connected to an external grounding wire.

[0013] As a preferred technical solution of the present invention, the second terminal is connected to a high voltage line of an external testing instrument.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the 10kV zinc oxide arrester test operating table has a compact structure, a reasonable design, and occupies a small space when in use, which can effectively improve the test efficiency. By setting a box body, the operating table is convenient to carry, and by setting four tension spring type flat contacts, it is convenient to clamp the two ends of the arrester, and the setting of the receiving plate is convenient for supporting the arrester. The setting of the first terminal and the second terminal ensures safety in use. The setting of the first fixing bolt is convenient for fixing the tension spring contact. By setting the threaded connection between the first terminal and the second clamping nut, and the second terminal and the first clamping nut, it is convenient to fix the connecting wire, thereby improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is the front view of the present invention.

[0017] In the figure: 1 box body, 2 legs, 3 first terminal, 4 connecting wire, 5 first fixing bolt, 6 tension spring type flat contact, 7 receiving plate, 8 second fixing bolt, 9 second terminal, 10 first clamping nut, 11 second clamping nut, 12 third clamping nut, 13 through hole. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is a schematic diagram of the embodiment of the present invention). Figure 2Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-2 The present invention provides a technical solution: a 10kV zinc oxide arrester test operating table, comprising a box body 1, the box body 1 is a square structure and is made of epoxy resin material, a leg 2 is arranged below the box body 1, the number of the leg 2 is four, and the four legs 2 are evenly distributed around the lower surface of the box body 1, the arrangement of the leg 2 facilitates the movement of the test table and the placement of the arrester, a tension spring type flat contact 6 is symmetrically arranged above the interior of the box body 1, and a through hole 13 is opened above the side plate of the box body 1 where the tension spring type flat contact 6 is installed, The setting of the through hole 13 is suitable for the placement of lightning arresters of different lengths. The tension spring type flat contact 6 uses eight-piece contacts. The tension spring type flat contacts 6 on each side are two arranged side by side and do not touch each other. The tension spring type flat contacts 6 are fixedly connected to the box body 1 through the first fixing bolt 5. The outer side surface of the first fixing bolt 5 is threadedly connected with a third clamping nut 12. A receiving plate 7 is provided below the tension spring type flat contact 6. The receiving plate 7 is fixedly connected to the box body 1 through the second fixing bolt 8. The receiving plate 7 is made of insulating material. The box body 1 is provided with a first terminal 3 and a second terminal 9 respectively. The first terminal The outer side surface of one end of the column 3 is threadedly connected with a second clamping nut 11, and the outer side surface of one end of the second terminal 9 is threadedly connected with a first clamping nut 10. The first terminal 3 and the second terminal 9 are respectively connected to the spring-type flat contacts 6 on both sides through connecting wires 4. The connecting wire 4 is made of copper-core soft wire. The first terminal 3 is connected to the external grounding wire, and the second terminal 9 is connected to the high-voltage wire of the external test instrument. The 10kV zinc oxide lightning arrester test operating table has a compact structure and a reasonable design. It occupies a small space when in use, which can effectively improve the test efficiency and eliminate test errors.

[0020] Comparative test: 60 lightning arresters in the 10kV high-voltage switch cabinet in the substation were selected for testing. They were divided into two groups, 30 in each group, and high-voltage electrical tests were performed on the test bench built on site and this test bench respectively. The 30 lightning arresters were placed on the temporary test bench respectively, and then a 1mA reference voltage was applied to the lightning arrester by an external high-voltage test instrument. The leakage current value at 0.75 times the voltage was read to see if it was within the qualified range. The other 30 lightning arresters were placed on the receiving plates 7 at both ends in turn, and the two ends of the lightning arrester were respectively clamped between two tension spring flat contacts 6. Then the first terminal 3 was connected to the external grounding wire, and the second terminal 9 was connected to the high-voltage line of the external test instrument. After a 1mA reference voltage was applied to the lightning arrester by an external high-voltage test instrument, the leakage current value at 0.75 times the voltage was read to see if it was within the qualified range. Data were recorded for the two groups of tests respectively.

[0021] Comparison results: Among the 30 lightning arresters measured by the temporary test bench, the number of tests was 30, and 3 errors were generated. The reason for the error was poor stability and interference from the surrounding environment, which made the arrester discharge unstable. The average test time was 4.48 minutes. In addition, it took 5 minutes to build the temporary test bench. Among the 30 lightning arresters tested by this test operating table, the average test time was 1.49 minutes, which was 66.7% lower than the original average test time, and the test success rate was 100%.

[0022] Result analysis: The 10kV zinc oxide arrester test operating table has low production cost and is easy to install. It can greatly reduce the test time and eliminate test errors. It not only ensures the work quality, but also reduces the waste of manpower and material resources, and greatly improves work efficiency.

[0023] 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 10kV zinc oxide arrester test operating table, characterized by: The invention comprises a box body (1), the box body (1) is a square structure and is made of epoxy resin material, a tension spring type flat contact (6) is symmetrically arranged on the upper part of the box body (1), two tension spring type flat contacts (6) are arranged side by side and do not touch each other, the tension spring type flat contacts (6) are fixedly connected to the box body (1) through a first fixing bolt (5), the outer side surface of the first fixing bolt (5) is threadedly connected with a third clamping nut (12), a through hole (13) is opened on the upper part of the side plate of the box body (1) on which the tension spring type flat contact (6) is installed, and the lower part of the tension spring type flat contact (6) is fixedly connected to the box body (1) through a first fixing bolt (5). A receiving plate (7) is provided on the side, the receiving plate (7) is fixedly connected to the box body (1) by a second fixing bolt (8), the receiving plate (7) is made of an insulating material, a first terminal (3) and a second terminal (9) are respectively provided inside the box body (1), an outer side surface of one end of the first terminal (3) is threadedly connected to a second clamping nut (11), an outer side surface of one end of the second terminal (9) is threadedly connected to a first clamping nut (10), and the first terminal (3) and the second terminal (9) are respectively connected to the tension spring type flat contacts (6) on both sides by connecting wires (4).

2. A 10kV zinc oxide arrester test operating table according to claim 1, characterized in that: Support legs (2) are provided below the box body (1), and there are four support legs (2). The four support legs (2) are evenly distributed around the lower surface of the box body (1).

3. A 10kV zinc oxide arrester test operating table according to claim 1, characterized in that: The tension spring type flat contact (6) is an eight-piece contact.

4. A 10kV zinc oxide arrester test operating table according to claim 1, characterized in that: The connecting wire (4) is made of a copper core soft wire.

5. A 10kV zinc oxide arrester test operating table according to claim 1, characterized in that: The first terminal (3) is connected to an external grounding wire.

6. A 10kV zinc oxide arrester test operating table according to claim 1, characterized in that: The second terminal (9) is connected to a high voltage line of an external testing instrument.

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