GCB arc extinguish chamber moving arc contact service life measuring tool

Abstract

A GCB arc extinguish chamber moving arc contact life measuring tool comprises a supporting part and a measuring part, the supporting part comprises a supporting plate and a supporting piece, the supporting piece is installed at the bottom of the supporting plate, the supporting plate is provided with a measuring hole, the measuring part comprises a measuring ruler, the measuring ruler is provided with scales, the measuring ruler penetrates into the measuring hole, and the measuring part is connected with the supporting plate. The stroke measuring device is used for measuring the stroke of the moving arc contact of the GCB arc extinguish chamber. The supporting plate is supported on the top of the GCB arc extinguish chamber through the supporting piece, the measuring hole in the supporting plate is located in the top of the moving arc contact, during measurement, the measuring ruler penetrates into the measuring hole, when the moving arc contact retracts, the height is measured once, when the moving arc contact stretches out, the height is measured again, and the difference value of the two measurement values is the stroke of the moving arc contact of the GCB arc extinguish chamber. Therefore, a basis is provided for judging the service life of the moving arc contact of the GCB arc extinguish chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of GCB arc extinguishing chamber maintenance tools, in particular to a tool for measuring the service life of the moving arc contact of a GCB arc extinguishing chamber. Background Art

[0002] The high-voltage circuit breaker (GCB) is one of the important electrical equipment. Its main function is to quickly cut off the short-circuit current of the high-voltage circuit when a fault occurs, so as to reduce the power outage range and ensure the safe operation of the system. Therefore, the electrical service life of the GCB arc extinguishing chamber is an important indicator to measure the circuit breaker.

[0003] In the prior art, the Chinese patent document CN204649127U discloses a special measuring tool for the contact stroke of the 10kV switch trolley contact, which can be used for the contact stroke of the 10kV switch trolley contact, but it is not convenient to measure the stroke of the moving arc contact of the GCB arc extinguishing chamber. Content of the Utility Model

[0004] The purpose of the utility model is to provide a tool for measuring the service life of the moving arc contact of a GCB arc extinguishing chamber, which is convenient for measuring the stroke of the moving arc contact of the GCB arc extinguishing chamber.

[0005] To achieve the above purpose, the utility model provides a tool for measuring the service life of the moving arc contact of a GCB arc extinguishing chamber, which includes a support part and a measuring part. The support part includes a support plate and a support member. The support member is installed at the bottom of the support plate. A measuring hole is provided on the support plate. The measuring part includes a measuring ruler with scales. The measuring ruler passes through the measuring hole and is used to measure the stroke of the moving arc contact of the GCB arc extinguishing chamber.

[0006] The support member is at least three rod bodies.

[0007] The lower end of the rod body is an arc-shaped part.

[0008] The measuring part further includes a measuring seat. A sliding groove is longitudinally provided on the measuring seat. The measuring ruler is slidably installed in the sliding groove.

[0009] A reference mark is provided on the measuring seat.

[0010] A limit screw is screwed on the measuring seat. The limit screw abuts against the measuring ruler to limit and fix the measuring ruler to the measuring seat.

[0011] Compared with the prior art, the utility model has the following technical effects:

[0012] 1. The support plate of the present utility model is supported on the top of the GCB arc extinguishing chamber through a support member, and the measurement hole on the support plate is located at the top of the moving arc contact. During measurement, the measuring ruler penetrates into the measurement hole. When the moving arc contact retracts, the height is measured once. When the moving arc contact extends, the height is measured again. The difference between the two measured values is the stroke of the moving arc contact of the GCB arc extinguishing chamber, thereby providing a basis for judging the service life of the moving arc contact of the GCB arc extinguishing chamber.

[0013] 2. The measuring part of the present utility model further includes a measuring seat. A sliding groove is longitudinally provided on the measuring seat, and the measuring ruler is slidably installed in the sliding groove. The measuring seat can be movable or fixed on the support plate. By providing the measuring seat, the perpendicularity of the measuring ruler to the support plate is ensured. A reference mark is provided on the measuring seat to facilitate the cooperation between the measuring ruler and the reference mark for data measurement, making the measurement data more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art:

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the whole of the present utility model;

[0016] Figure 2 It is a front view structural schematic diagram of the present utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the support part of the present utility model;

[0018] Figure 4 It is a front view structural schematic diagram of the measuring part of the present utility model;

[0019] Figure 5 It is a state diagram when the present utility model measures the moving arc contact of the GCB arc extinguishing chamber.

[0020] REFERENCE MARKS:

[0021] Support part 10, support plate 11, support member 12, measurement hole 13, arc-shaped part 14;

[0022] Measuring part 20, measuring ruler 21, measuring seat 22, reference mark 23, scale 24, limit screw 25, sliding groove 26;

[0023] GCB arc extinguishing chamber 30, moving arc contact 31. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, but should not be construed as limiting the present utility model.

[0025] Please refer to Figures 1-4 , a measuring tool for the life of the moving arc contact of a GCB arc extinguishing chamber, including a support part 10 and a measuring part 20. The support part 10 includes a support plate 11 and a support member 12. The support member 12 is installed at the bottom of the support plate 11. A measuring hole 13 is provided on the support plate 11. The measuring part 20 includes a measuring scale 21 with graduations 24 thereon. The measuring scale 21 penetrates into the measuring hole 13 for measuring the stroke of the moving arc contact 31 of the GCB arc extinguishing chamber 30. The support plate 11 is supported on the top of the GCB arc extinguishing chamber 30 by the support member 12, and the measuring hole 13 on the support plate 11 is located at the top of the moving arc contact 31. During measurement, the measuring scale 21 penetrates into the measuring hole 13. When the moving arc contact 31 retracts, the height is measured once. When the moving arc contact 31 extends, the height is measured again. The difference between the two measured values is the stroke of the moving arc contact 31 of the GCB arc extinguishing chamber 30.

[0026] In this embodiment, during measurement, with the upper side surface of the support plate 11 as the reference, the lower end of the measuring scale 21 abuts against the top of the moving arc contact 31, and data is measured through the graduations 24 on the measuring scale 21.

[0027] In this embodiment, the support member 12 is three uniformly distributed rod bodies. The lower ends of the three rod bodies are on the same plane, and this plane is parallel to the upper side surface of the support plate 11. The rod bodies can also be 4 or 5. The support plate 11 is supported by the three rod bodies, and the structure is simple.

[0028] Of course, the support member 12 can also be a circular ring.

[0029] Furthermore, the lower end of the rod body is an arc portion 14. The surface contact between the lower end of the rod body and the top of the GCB arc extinguishing chamber 30 is adjusted to point contact, reducing the contact area between the lower end of the rod body and the top of the GCB arc extinguishing chamber 30, and preventing particulate matter from being padded under the lower end of the rod body, affecting the measurement accuracy.

[0030] Embodiment Two:

[0031] On the basis of Embodiment One, the measuring part 20 further includes a measuring seat 22. A sliding groove 26 is longitudinally provided on the measuring seat 22. The measuring scale 21 is slidably installed in the sliding groove 26. The measuring seat 22 can be movable or fixed on the support plate 11. By providing the measuring seat 22, the perpendicularity between the measuring scale 21 and the support plate 11 is ensured.

[0032] Furthermore, a reference mark 23 is provided on the measuring base 22, which facilitates the cooperation between the measuring ruler 21 and the reference mark 23 for data measurement, making the measurement data more accurate. Preferably, the reference mark 23 adopts the scale line on the vernier slider in CN204649127U.

[0033] Furthermore, a limit screw 25 is screwed onto the measuring base 22, and the limit screw 25 abuts against the measuring ruler 21 to limit and fix the measuring ruler 21 to the measuring base 22. After measurement, tighten the limit screw 25 to limit and fix the measuring ruler 21 to the measuring base 22, preventing the measuring ruler 21 and the measuring base 22 from moving relative to each other, which is convenient for reading.

[0034] The working principle or operation process of the present utility model is as follows:

[0035] When the present utility model is in use, refer to Figure 5 , place the support portion 10 on the top of the GCB arc extinguishing chamber 30, and make the measurement hole 13 on the support plate 11 located at the top of the moving arc contact 31.

[0036] Use the opening and closing wrench to open and close the moving arc contact several times to confirm that the moving contact switch operates normally. Measure and record the highest point data L1 of the moving arc contact in the open state, measure and record the highest point data L2 of the moving arc contact in the closed state, and calculate the stroke of the moving arc contact 31 through L3 = L1 - L2, so as to judge the burning condition of the moving arc contact 31 in the arc extinguishing chamber, thereby providing a basis for judging the service life of the moving arc contact of the GCB arc extinguishing chamber.

Claims

1. A measuring tool for the service life of the moving arc contact of a GCB arc extinguishing chamber, characterized in that: It includes a support part (10) and a measuring part (20). The support part (10) includes a support plate (11) and a support member (12). The support member (12) is installed at the bottom of the support plate (11). A measuring hole (13) is provided on the support plate (11). The measuring part (20) includes a measuring ruler (21) with graduations (24) thereon. The measuring ruler (21) penetrates into the measuring hole (13) and is used to measure the stroke of the moving arc contact (31) of the GCB arc extinguishing chamber (30).

2. The GCB arc extinguishing chamber moving arc contact life measurement tooling according to claim 1, characterized in that: The support member (12) is at least three rod bodies.

3. The GCB arc-extinguishing chamber moving arc contact life measurement tooling according to claim 2, characterized in that: The lower end of the rod body is an arc-shaped part (14).

4. The GCB arc-extinguishing chamber moving arc contact life measurement tooling according to claim 1, characterized in that: The measuring part (20) further includes a measuring seat (22). A sliding groove (26) is longitudinally provided on the measuring seat (22). The measuring ruler (21) is slidably installed in the sliding groove (26).

5. The GCB arc-extinguishing chamber moving arc contact life measurement tooling according to claim 4, characterized in that: A reference mark (23) is provided on the measuring seat (22).

6. The GCB arc-extinguishing chamber moving arc contact life measurement tooling according to claim 4 or 5, characterized in that: A limit screw (25) is screwed onto the measuring seat (22). The limit screw (25) abuts against the measuring ruler (21) to limit and fix the measuring ruler (21) and the measuring seat (22).

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