Insulation test tool

Abstract

The utility model relates to an insulation test tool, comprising an insulation bottom plate; the insulating baffle plate is vertically arranged on the insulating bottom plate; the three core penetrating bolts penetrate through the insulating baffle plate; the moving contact is connected with one end, far away from the insulating baffle plate, of the core-penetrating bolt, and the projection of the moving contact towards the direction of the insulating bottom plate is not intersected with the insulating bottom plate; the insulator is sleeved outside the core-penetrating bolt, and two ends of the core-penetrating bolt are exposed; one end of the core-penetrating bolt, which is not connected with the moving contact, is a test terminal; and the insulating support plates are respectively connected with the insulating bottom plate and the insulating baffle plate and are positioned on two sides of the core-penetrating bolt. Compared with the prior art, the utility model has the advantages that the operation is simple, the electric shock risk is effectively avoided, and the single-person operation can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of insulation test, especially to an insulation test tool. BACKGROUND

[0002] Safety considerations require regular insulation measurement of high-voltage switch cabinet, the bus and feeder power cable outlet in the feeder outlet cabin room of the conventional island power center of a nuclear power plant are located in the same cabin room. The insulation measurement process is: first, the circuit breaker is pulled out, then one person presses the cover baffle of the contact box, the static contact of the power cable outlet is exposed, and the static contact of the bus is also exposed. At this time, another person uses a high-voltage testing pen to test the insulation of the power cable outlet, and then uses a shaking table to measure the insulation resistance. In this process, if the static contact of the live bus is exposed, and the operator does not have enough safety distance or misjudges the static contact of the bus, it is easy to cause electric shock risk, and there is a serious safety hazard, and two people are needed to operate, which is inconvenient for measurement.

[0003] Patent publication No. CN217879486U discloses an insulation test trolley, which comprises a chassis car, an insulation baffle, three movable contact arms, a bottom plate is arranged on the chassis car, the insulation baffle is vertically arranged on the bottom plate, one end of each movable contact arm is fixed to one side of the insulation baffle, each movable contact arm is provided with a plum blossom contact at the other end, an insulator is arranged outside the insulation baffle end of each movable contact arm, the other side of the insulation baffle is provided with an insulation test column, and a test lead is further arranged, the movable contact arm is provided with a mounting hole for mounting the test lead, one side of the test lead is electrically connected with the plum blossom contact, and the other side of the test lead extends to the insulation test column through the mounting hole. However, the plum blossom contact in the insulation test trolley is limited by the chassis car when contacting the load side, and when the height of the load side baffle is obviously lower than the height of the post insulator, the load side baffle cannot be effectively opened, in addition, the test lead is used to lead the measured part to the vertical epoxy resin plate, one side of the test lead is electrically connected with the plum blossom contact, and the other side of the test lead extends to the insulation test column through the mounting hole, which is inconvenient to operate and still has a certain electric shock risk. SUMMARY

[0004] The utility model discloses a kind of insulation test tools to overcome the defects of the above prior art, easy to operate, effectively avoid electric shock risk, and single-person operation can be realized.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] An insulation test tool, comprising:

[0007] An insulation bottom plate;

[0008] An insulating baffle vertically arranged on the insulating bottom plate;

[0009] Three core-penetrating bolts passing through the insulating baffle;

[0010] A movable contact connected to the end of the core-penetrating bolt away from the insulating baffle, the projection of the movable contact towards the insulating bottom plate does not intersect with the insulating bottom plate;

[0011] An insulator sleeved outside the core-penetrating bolt and exposing both ends thereof, the end of the core-penetrating bolt not connected to the movable contact is a test terminal;

[0012] And insulating support plates connected to the insulating bottom plate and the insulating baffle respectively and located on both sides of the core-penetrating bolt.

[0013] Further, the height of the insulating support plate is higher than the height of the core-penetrating bolt.

[0014] Further, the side of the insulating support plate close to the movable contact is an arc-shaped recess structure.

[0015] Further, the insulating support plate comprises an upper insulating support plate and a lower insulating support plate, the lower insulating support plate is fixedly connected to the insulating bottom plate, the upper insulating support plate is detachably connected to the lower insulating support plate and can move back and forth along the direction parallel to the core-penetrating bolt.

[0016] Further, the core-penetrating bolt is a copper conductive rod, which can be in the shape of a circular rod, a square rod, a rhombic rod, a hexagonal rod, a polygonal rod or other irregularly shaped rod.

[0017] Further, the movable contact is provided with a through hole for the core-penetrating bolt to pass through, the core-penetrating bolt is connected to the movable contact through the through hole and realizes electrical conduction.

[0018] Further, the outer surface of the insulator is a threaded structure, and the length of the insulator is consistent with the length of the insulating support plate.

[0019] Further, one side of the insulating baffle is provided with an insulating protection plate surrounding the test end of the core-penetrating bolt.

[0020] Further, the insulating baffle is slidingly connected to the insulating support plate, the insulating support plate is provided with a sliding groove, the insulating baffle is provided with a sliding block, and the insulating baffle and the insulating support plate are connected through the core-penetrating bolt.

[0021] Further, the end of the insulating support plate close to the movable contact is provided with a position sensor, and the core-penetrating bolt, the position sensor and a controller are connected.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] (1) The insulation test tool provided by the present invention uses one end of the through bolt as the test terminal, and uses a moving contact to contact the static contact of the power cable outlet. The through bolt and the moving contact are both made of conductive materials. If the static contact of the power cable outlet is charged, it can be conducted to the test terminal. The staff can complete the electrical inspection and insulation test at the test terminal, avoiding the operator's body parts from entering the cabin to avoid accidentally touching the power cable busbar, thereby improving the safety of the operator and enabling single-person operation by the operator, which is simple to operate.

[0024] (2) The projection of the moving contact of the insulation testing tool provided by the present invention toward the insulating base plate does not intersect with the insulating base plate, so that when the moving contact contacts the static contact of the power cable, only the moving contact enters the compartment, and the insulating base plate and the insulating support plate will not interfere with the moving contact.

[0025] (3) The present invention provides insulating support plates on both sides of the through-bolt, and the height of the insulating support plates is greater than that of the through-bolt, so that the insulating support plates can abut against the baffle supporting the contact box, without the operator having to manually abut it. Furthermore, the side of the insulating support plate close to the moving contact is an arc-shaped recessed structure, which facilitates smoother insertion into the contact box without interfering with other structures within the contact box.

[0026] (3) The insulating support plate of the present invention includes an upper insulating support plate and a lower insulating support plate, wherein the lower insulating support plate is fixedly connected to the insulating base plate, and the upper insulating support plate is detachably connected to the lower insulating support plate and can move back and forth in a direction parallel to the through-core bolt, so as to detect the depth of the moving contact inserted into the insulating box and prevent it from extending too far and colliding with the static contact, thereby effectively determining the position of the moving contact.

[0027] (4) The insulating baffle of the present invention is slidably connected to the insulating support plate. The insulating support plate is provided with a slide groove, and a slider is provided on the insulating baffle. The insulating baffle and the insulating support plate are connected by bolts. This arrangement can accommodate static contacts of different heights, and can generate the necessary contact pressure between the moving contact and the static contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional diagram of the insulation testing tool shown in Example 1;

[0029] Figure 2 A top view of the insulation testing tool shown in Example 1;

[0030] Figure 3A side view of the insulation testing tool shown in Example 1.

[0031] Figure 4 A perspective view of the insulation testing tool shown in Example 2.

[0032] Legend in the figure:

[0033] 1 - Insulating base plate;

[0034] 2 - Insulating baffle, 21 - Insulating protective plate, 22 - Sliding groove;

[0035] 3 - Core penetrating bolt;

[0036] 4 - Moving contact;

[0037] 5 - Insulator;

[0038] 6 - Insulating support plate, 61 - Upper insulating support plate, 62 - Lower insulating support plate. DETAILED DESCRIPTION

[0039] The utility model will be described in detail below in combination with the drawings and specific embodiments. The embodiments are implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiments. In the following embodiments or embodiments, if there are no special instructions for the function components or structures, it is indicated that they are all conventional components or conventional structures adopted in the field to realize the corresponding functions.

[0040] It should be noted that in the description of the utility model, the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0042] Example 1

[0043] An insulation testing tool, such as Figures 1-3 as shown, comprising:

[0044] an insulation base plate 1;

[0045] an insulation baffle plate 2 vertically arranged on the insulation base plate 1;

[0046] three core-penetrating bolts 3 passing through the insulation baffle plate 2;

[0047] a movable contact 4 connected to the core-penetrating bolts 3 away from the insulation baffle plate 2, the projection of the movable contact 4 towards the insulation base plate 1 does not intersect with the insulation base plate 1;

[0048] an insulator 5 sleeved outside the core-penetrating bolts 3 and exposing both ends thereof, the end of the core-penetrating bolts 3 not connected to the movable contact 4 is a testing terminal;

[0049] and insulation support plates 6 connected to the insulation base plate 1 and the insulation baffle plate 2 respectively and located on both sides of the core-penetrating bolts 3.

[0050] In the embodiment, the height of the insulation support plates 6 is higher than the height of the core-penetrating bolts 3.

[0051] In the embodiment, the side of the insulation support plates 6 close to the movable contact 4 is arc-shaped and recessed.

[0052] In the embodiment, the core-penetrating bolts 3 are copper conductive rods in the shape of hexagonal rods.

[0053] In the embodiment, the movable contact 4 is provided with through holes for the core-penetrating bolts 3 to pass through, the core-penetrating bolts 3 pass through the through holes to be connected to the movable contact 4 and realize electrical conduction.

[0054] In the embodiment, the outer surface of the insulator 5 is a threaded structure, and the length of the insulator 5 is consistent with the length of the insulation support plates 6.

[0055] In the embodiment, one side of the insulation baffle plate 2 is provided with an insulation protection plate 21 surrounding the testing end of the core-penetrating bolts 3.

[0056] In the embodiment, the use process and principle of the insulation testing tool are as follows:

[0057] The power cable is located in an insulating box with a cover baffle. The operator places the insulation test tool into the insulating box of the high-voltage switchgear and pushes it into the working position. During the pushing process, the insulating support plate is used to open the cover baffle of the insulating box to make the moving contact contact with the static contact of the power cable. The staff can test at the test terminal of the through bolt to complete the electrical and insulation test.

[0058] Example 2

[0059] In this embodiment, if Figure 4 As shown, the insulating support plate 6 includes an upper insulating support plate 61 and a lower insulating support plate 62. The lower insulating support plate 62 is fixedly connected to the insulating base plate 1. The upper insulating support plate 61 and the lower insulating support plate 62 are detachably connected and can move back and forth in a direction parallel to the through-core bolt 3.

[0060] In this embodiment, the use process and principle of the insulation test tool are as follows:

[0061] The power cable is located in an insulating box with a covering baffle. The operator places the insulation test tool into the insulating box of the high-voltage switchgear and pushes it into the working position. During the pushing process, the insulating support plate 6 is used to open the covering baffle of the insulating box. By moving the position of the upper insulating support plate 61, the depth of the moving contact 4 inserted into the insulating box can be detected to avoid it from extending too long and colliding with the static contact, thereby effectively determining the position of the moving contact. The staff can test at the test terminal of the through bolt to complete the electrical inspection and insulation test.

[0062] Example 3

[0063] On the basis of Example 1, the insulating baffle 2 is slidably connected to the insulating support plate 6, a sliding groove is provided on the insulating support plate 6, a slider is provided on the insulating baffle 2, and the insulating baffle 2 and the insulating support plate 6 are connected by bolts.

[0064] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.

Claims

1. An insulation testing tool, characterized in that: include: Insulating base plate (1); an insulating baffle (2) vertically arranged on the insulating base plate (1); Three through-core bolts (3) passing through the insulating baffle (2); A moving contact (4) connected to one end of the through-core bolt (3) away from the insulating baffle (2), wherein a projection of the moving contact (4) toward the insulating base plate (1) does not intersect with the insulating base plate (1); an insulator (5) which is sleeved on the outside of the through-core bolt (3) and leaves both ends exposed, wherein the end of the through-core bolt (3) not connected to the moving contact (4) is a test terminal; and insulating support plates (6) respectively connected to the insulating base plate (1) and the insulating baffle (2) and located on both sides of the through-core bolt (3).

2. An insulation testing tool according to claim 1, characterized in that: The height of the insulating support plate (6) is higher than the height of the through-core bolt (3).

3. The insulation testing tool according to claim 1, characterized in that: The side of the insulating support plate (6) close to the moving contact (4) is an arc-shaped concave structure.

4. The insulation testing tool according to claim 1, characterized in that: The insulating support plate (6) comprises an upper insulating support plate (61) and a lower insulating support plate (62), wherein the lower insulating support plate (62) is fixedly connected to the insulating base plate (1), and the upper insulating support plate (61) and the lower insulating support plate (62) are detachably connected and can move back and forth in a direction parallel to the through-core bolt (3).

5. The insulation testing tool according to claim 1, characterized in that: The through-core bolt (3) is a copper conductive rod, which is in the shape of a round rod, a square rod, a diamond rod, a hexagonal rod, a polygonal rod or a rod of other irregular shapes.

6. The insulation testing tool according to claim 1, characterized in that: The moving contact (4) is provided with a through hole for the through-core bolt (3) to pass through, and the through-core bolt (3) passes through the through hole to connect with the moving contact (4) and realize electrical conduction.

7. The insulation testing tool according to claim 1, characterized in that: The outer surface of the insulator (5) is a threaded structure, and the length of the insulator (5) is consistent with the length of the insulating support plate (6).

8. The insulation testing tool according to claim 1, characterized in that: An insulating protection plate (21) surrounding the test end of the through-core bolt (3) is provided on one side of the insulating baffle (2).

9. The insulation testing tool according to claim 1, characterized in that: The insulating baffle (2) is provided with three sliding grooves (22) perpendicular to the direction of the through-core bolts (3), and the through-core bolts (3) are slidably connected to the sliding grooves (22).

10. The insulation testing tool according to claim 9, characterized in that: A position sensor is provided at one end of the insulating support plate (6) close to the moving contact (4), and the through-core bolt (3) and the position sensor are connected to a controller.

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