A device for auxiliary measurement of cable insulation value

Abstract

The utility model relates to the field of cable technology, and discloses an auxiliary device for measuring the insulation value of a cable, comprising: an auxiliary device housing, handrails are installed on the upper parts of both sides of the auxiliary device housing; a metal grounding piece is arranged at the lower front part of the auxiliary device housing, and a wiring terminal is installed at the lower left part of the auxiliary device housing; a card slot is arranged on the upper surface of the auxiliary device housing, and the card slot is arranged on both sides and the middle of the upper surface of the auxiliary device housing, and a metal clamp is provided on the front of the card slot. Rotating the screw can fix the wire head, and at the same time connect the metal clamp with the wiring terminal of the insulation megger, and the other end of the insulation megger is connected to the wiring terminal, so that it can be connected to the metal grounding piece, and the insulation megger can be connected more standardizedly, and the control of the distance of the access point can be handled well, and inaccurate test data and personal injury can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a device for assisting in measuring the insulation value of cables. Background Art

[0002] The cable insulation value refers to the limit value of the electric field strength per unit thickness of the insulating material under the rated voltage. The normal range of the cable insulation value mainly depends on factors such as cable type, rated voltage, and insulating material.

[0003] When dealing with faults in DC cables or AC cables laid on the ground, photovoltaic power stations and power plants with the same operating nature need to measure the insulation values ​​of the three phases A, B, and C. According to the traditional method, the insulation megohmmeter needs to be connected to the line to be measured, and then the measurement is performed after the connection. It is inconvenient to fix the megohmmeter and the line when connecting them, and the access point is not standardized. The control of the distance during the test is also unreasonable. Sometimes, due to poor access point handling or unreasonable distance control, the test data may be inaccurate or personal injury may occur. In response to this situation, this project has designed an auxiliary cable insulation value measurement device, which is easy to operate and better avoids and responds to the above-mentioned problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides an auxiliary device for measuring the insulation value of a cable to solve the problems raised in the above background technology that the megohmmeter and the line are inconvenient to fix when connected, the access point is not standardized, and the control of the distance during the test is also unreasonable.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model provides the following technical solution: a device for auxiliary measurement of cable insulation value, comprising:

[0008] An auxiliary device housing, wherein handrails are installed on upper portions of both sides of the auxiliary device housing;

[0009] A metal grounding member is arranged at the lower front part of the auxiliary device housing, and a wiring terminal is installed at the lower left part of the auxiliary device housing;

[0010] A card slot is arranged on the upper surface of the auxiliary device shell. The card slot is arranged on both sides and the middle of the upper surface of the auxiliary device shell. A metal caliper is provided on the front of the card slot. Fixed plates are installed on the upper and lower parts of the right side of the metal caliper, and screws are screwed between the fixed plates.

[0011] Preferably, the metal caliper is composed of two semi-annular metal parts, and the fixing plates are installed at the openings of the two semi-annular metal parts, so that the fixing plates can be close to each other when squeezed by the screw.

[0012] Preferably, threaded holes are provided on the surfaces of the fixing plates, and the screw rods are screwed into the inner cavities of the threaded holes. Rotating the screw rods can squeeze the fixing plates through the threaded holes.

[0013] Preferably, a mounting block is installed on the lower part of the back side of the metal caliper, and the mounting block is installed on the surface of the auxiliary device housing. The mounting block connects the lower part of the metal caliper to the surface of the auxiliary device housing, ensuring that the size of the inner ring of the metal caliper can be changed.

[0014] Preferably, a nut is screwed onto the lower portion of the screw rod, and an anti-skid pad is installed on the upper surface of the nut, and the nut is used to increase the stability of the screw rod.

[0015] Preferably, a connecting rod is installed on the left side of the lower surface of the semi-circular metal part of the metal caliper located at the upper part, and a connecting block is installed on the left side of the upper surface of the semi-circular metal part of the metal caliper located at the lower part. The surface of the connecting block is provided with a connecting groove, and the connecting rod is inserted into the inner cavity of the connecting groove. The connecting rod and the connecting groove enable the metal caliper to open and close.

[0016] Beneficial Effects

[0017] Compared with the prior art, the utility model provides a device for auxiliary measurement of cable insulation value, which has the following beneficial effects:

[0018] The auxiliary device for measuring the insulation value of cables can place the exposed wire ends of the three-phase A, B and C cables through the card slot, and the rotating screw can squeeze the fixing plate, and the fixing plate will squeeze the metal clamp, so that the exposed wire ends of the three-phase A, B and C cables can be fixed. At the same time, the metal clamp can also serve as a wiring terminal, and the metal clamp is connected to the wiring terminal of the insulation megohmmeter. The other end of the insulation megohmmeter is connected to the wiring terminal at the metal grounding piece, so that it can be connected to the metal grounding piece, which is convenient for the insulation megohmmeter to be connected to the grounding terminal when measuring the relative insulation value, and the insulation megohmmeter can be accessed more standardizedly, and the control of the distance of the access point can be handled well, so as to prevent inaccurate test data and personal injury. Moreover, the staff only needs to rotate the screw to fix the line, which is convenient for the staff to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2This is a schematic diagram of the structure of the metal caliper of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the screw rod of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the lower part of the metal caliper of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the upper part of the metal caliper of the utility model.

[0024] In the figure: 1. Auxiliary device housing; 2. Handrail; 3. Metal grounding piece; 4. Wiring terminal; 5. Card slot; 6. Metal clamp; 7. Fixing plate; 8. Screw; 9. Threaded hole; 10. Mounting block; 11. Nut; 12. Anti-slip pad; 13. Connecting rod; 14. Connecting block; 15. Connecting slot. DETAILED DESCRIPTION

[0025] 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.

[0026] The utility model provides a technical solution, a device for auxiliary measurement of cable insulation value, see Figure 1 , comprising an auxiliary device housing 1, and handrails 2 are installed on the upper parts of both sides of the auxiliary device housing 1;

[0027] The metal grounding member 3 is arranged at the lower front part of the auxiliary device housing 1. The lower left part of the auxiliary device housing 1 is provided with a wiring terminal 4. The auxiliary device housing 1 is made of insulating material.

[0028] The card slot 5 is arranged on the upper surface of the auxiliary device housing 1. The card slot 5 is arranged on both sides and the middle of the upper surface of the auxiliary device housing 1. The front of the card slot 5 is provided with a metal caliper 6. Figure 2 The upper and lower parts of the right side of the metal caliper 6 are both installed with fixing plates 7, and screws 8 are screwed between the fixing plates 7;

[0029] The handrail 2 is used to carry and move the device;

[0030] The exposed wire ends of the three-phase cables A, B, and C can be placed through the slot 5, and the rotating screw 8 can squeeze the fixing plate 7, and the fixing plate 7 will squeeze the metal clamp 6, so that the exposed wire ends of the three-phase cables A, B, and C can be fixed. At the same time, the metal clamp 6 can also serve as the wiring terminal 4, and the metal clamp 6 is connected to the wiring terminal of the insulation megohmmeter. The other end of the insulation megohmmeter is connected to the wiring terminal 4 at the metal grounding piece 3, so that it can be connected to the metal grounding piece 3, which is convenient for the insulation megohmmeter to measure the relative insulation value. The insulation megohmmeter can be connected to the grounding terminal, and the insulation megohmmeter can be accessed more standardizedly, and the control of the access point distance can be handled well, so as to prevent inaccurate test data and personal injury. Moreover, the staff only needs to rotate the screw 8 to fix the line, which is convenient for the staff's operation.

[0031] The metal caliper 6 is composed of two semi-annular metal parts, and the fixing plates 7 are installed at the openings of the two semi-annular metal parts, so that the fixing plates 7 can be close to each other when squeezed by the screw rod 8.

[0032] See also Figure 4 The surface of the fixing plate 7 is provided with threaded holes 9 , and the screw rods 8 are screwed into the inner cavity of the threaded holes 9 . The rotating screw rods 8 can extrude the fixing plate 7 through the threaded holes 9 .

[0033] A mounting block 10 is installed on the lower back side of the metal caliper 6, and the mounting block 10 is installed on the surface of the auxiliary device housing 1. The mounting block 10 connects the lower part of the metal caliper 6 to the surface of the auxiliary device housing 1, ensuring that the inner ring size of the metal caliper 6 can be changed.

[0034] See also Figure 3 The lower part of the screw rod 8 is screwed with a nut 11 , and the upper surface of the nut 11 is installed with an anti-slip pad 12 , and the nut 11 is used to increase the stability of the screw rod 8 .

[0035] See also Figure 5 The left side of the lower surface of the semi-circular metal part of the metal caliper 6 at the upper part is equipped with a connecting rod 13, see Figure 4 A connecting block 14 is installed on the left side of the upper surface of the semi-circular metal part located at the lower metal caliper 6. A connecting groove 15 is opened on the surface of the connecting block 14. The connecting rod 13 is inserted into the inner cavity of the connecting groove 15. The connecting rod 13 and the connecting groove 15 enable the metal caliper 6 to be opened and closed.

[0036] The device is first used to carry and move the device through the handrail 2, and the exposed wire ends of the three-phase cables A, B, and C can be placed through the slot 5. The rotating screw 8 can squeeze the fixing plate 7, and then the metal clamp 6 is composed of two semi-annular metal parts. The fixing plates 7 are installed at the openings of the two semi-annular metal parts. The connecting rod 13 and the connecting slot 15 enable the metal clamp 6 to be opened and closed, so that the fixing plate 7 can squeeze the metal clamp 6, so that the exposed wire ends of the three-phase cables A, B, and C can be fixed. Finally, the metal clamp 6 can also Acting as a wiring terminal 4, the metal clamp 6 is connected to the wiring terminal of the insulation megohmmeter, and the other end of the insulation megohmmeter is connected to the wiring terminal 4 at the metal grounding piece 3, so that it can be connected to the metal grounding piece 3, which is convenient for the insulation megohmmeter to measure the relative insulation value. The insulation megohmmeter can be connected to the grounding terminal, and the insulation megohmmeter can be accessed more standardizedly, and the control of the access point distance can be handled well, which can prevent inaccurate test data and personal injury, and the staff only needs to rotate the screw 8 to fix the line, which is convenient for the staff's operation.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] 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 device for assisting in measuring cable insulation value, characterized in that: include: An auxiliary device housing (1), wherein handrails (2) are installed on upper portions of both sides of the auxiliary device housing (1); A metal grounding member (3) is arranged at the lower front portion of the auxiliary device housing (1), and a wiring terminal (4) is installed at the lower left portion of the auxiliary device housing (1); A card slot (5) is arranged on the upper surface of the auxiliary device housing (1), and the card slot (5) is arranged on both sides and the middle of the upper surface of the auxiliary device housing (1). A metal caliper (6) is arranged on the front of the card slot (5), and a fixing plate (7) is installed on the upper and lower parts of the right side of the metal caliper (6), and screws (8) are screwed between the fixing plates (7).

2. The device for assisting in measuring the insulation value of a cable according to claim 1, characterized in that: The metal caliper (6) is composed of two semi-annular metal parts, and the fixing plates (7) are installed at the openings of the two semi-annular metal parts.

3. The device for assisting in measuring the insulation value of a cable according to claim 1, characterized in that: The surfaces of the fixing plates (7) are provided with threaded holes (9), and the screw rods (8) are screwed into the inner cavities of the threaded holes (9).

4. The device for assisting in measuring the insulation value of a cable according to claim 1, characterized in that: A mounting block (10) is installed at the lower part of the back side of each of the metal calipers (6), and each of the mounting blocks (10) is installed on the surface of the auxiliary device housing (1).

5. The device for assisting in measuring the insulation value of a cable according to claim 1, characterized in that: The lower part of the screw rod (8) is screwed with a nut (11), and the upper surface of the nut (11) is installed with an anti-slip cushion layer (12).

6. The device for assisting in measuring the insulation value of a cable according to claim 2, characterized in that: A connecting rod (13) is installed on the left side of the lower surface of the semi-circular metal part of the metal caliper (6) at the upper part, and a connecting block (14) is installed on the left side of the upper surface of the semi-circular metal part of the metal caliper (6) at the lower part. The surface of the connecting block (14) is provided with a connecting groove (15), and the connecting rod (13) is inserted into the inner cavity of the connecting groove (15).

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