Bypass cable insulation test inserter

Abstract

The utility model discloses a bypass cable insulation test plug-in carrier which comprises a power connection column, an insulation handle and a power line. The power connection column is of a cylindrical structure made of an insulating material, a power connection cavity is formed in the power connection column, and a power connection mechanism used for clamping a wire core is embedded in the power connection cavity; an insulating handle is arranged at the rear end of the power connection column, a trumpet-shaped horn mouth is arranged at the front end of the power connection column, a cleaning head is detachably connected in the horn mouth, and a wire core cleaning hole used for cleaning the surface of a wire core is formed in the cleaning head; a cable is arranged at the tail end of the insulating handle to form a power line, and the power line is electrically connected with a power connection mechanism in the power connection column; the beneficial effects of the utility model are that an oxide layer on the wire core can be cleaned; and the clamping is more stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable testing, and in particular relates to a bypass cable insulation testing plug-in device. Background Art

[0002] When the bypass cable is inspected, maintained or inspected, and before use, an insulation test is required. A high voltage of 20,000 volts needs to be applied to the core of the cable, and then the skin of the bypass cable is tested to see if it is induced to be charged (such as a cable resistance online test circuit with publication number CN109959824A). At present, a clamp is usually used to connect the core of the bypass cable when conducting insulation testing on the bypass cable. Although this method has a faster connection speed, it only relies on a compression spring to provide clamping force, and the clamping force is limited. There is a risk of slipping or loose contact. When the connection position is not in firm contact, there is a hidden danger of heating at the connection point under high current, which is prone to danger. In addition, after the core has been placed for a period of time, an oxide layer will form on its surface. If these oxides are not removed during the insulation test, the test results may be inaccurate. Utility Model Content

[0003] The utility model aims to provide a bypass cable insulation test plug-in device to solve the problems mentioned in the above background technology.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A bypass cable insulation test plug and load device comprises: a connection post, an insulating handle, and a conducting wire; the connection post is a columnar structure made of insulating material, a connection cavity is provided in the connection post, and a connection mechanism for clamping a wire core is embedded in the connection cavity; an insulating handle is provided at the rear end of the connection post, and a trumpet-shaped bell mouth is provided at the front end of the connection post, a cleaning head is detachably connected to the bell mouth, and a wire core cleaning hole for cleaning the surface of the wire core is provided in the cleaning head; a cable is provided at the end of the insulating handle to form a conducting wire, and the conducting wire is electrically connected to the connecting mechanism inside the connection post.

[0006] Furthermore, in order to realize the function of cleaning the surface of the wire core, the main body of the cleaning head (5) is a cleaning column (51) made of a flexible material, the wire core cleaning hole (53) is arranged at the center of the cleaning column (51), the inner circumferential wall of the wire core cleaning hole (53) is provided with friction particles or friction convex strips for cleaning the oxide layer on the wire core (82), and the outer circumferential surface of the cleaning column (51) is provided with cleaning convex patterns to form a wire sleeve cleaning wall (54); the cleaning column (51) is fixed on a plastic rear shell (52) made of a plastic material, and the contour of one side of the plastic rear shell (52) away from the cleaning column (51) matches the contour of the inner surface of the bell mouth (11).

[0007] Furthermore, in order to achieve a detachable connection between the cleaning head and the bell mouth and to provide anti-twisting capability between the cleaning head and the bell mouth, the plastic rear shell is provided with an outwardly convex inlay strip with an outwardly convex structure on the side away from the cleaning column, and the bell mouth is provided with an inwardly concave inlay groove for engaging the outwardly convex inlay strip, and the outwardly convex inlay strip is provided with at least two tooth-like structures extending toward the insulating handle side to form mating teeth, and after the mating teeth penetrate the bell mouth, a pin is used to limit the position, and the bell mouth is provided with a mating hole for the mating teeth to penetrate.

[0008] Furthermore, in order to allow the power connection mechanism to have more contact and conductive positions when clamping the wire core, the main body of the power connection mechanism is a copper column connected to the live wire and a number of copper sheets connected in a circular array around the copper column. The copper sheet is provided with a number of power connection protrusions that are arc-shaped and protrude outward toward the side of the copper column. The copper sheet as a whole has elastic deformation ability and has an elastic tendency to move toward the center of the copper column.

[0009] Furthermore, in order to further strengthen the clamping force of the power connection mechanism, a spring is fixedly connected to one side of the power connection protrusion of the power connection mechanism away from the axis of the copper column, and the other end of the spring is fixedly connected to the inner wall of the power connection cavity.

[0010] Furthermore, in order to increase the contact conductive area between the contact convex and the wire core, a portion where the contact convex and the wire core contact is provided with an arc-shaped groove to form an arc-shaped groove.

[0011] Furthermore, in order to make the wire core insert into the power connection mechanism more smoothly, the end of the copper sheet away from the copper column is bent in an arc shape toward the side away from the axis of the copper column and then bent backward to abut against the inner wall of the power connection cavity.

[0012] Furthermore, in order to make the connection area between the copper sheet and the inner wall of the power connection cavity larger and the force more uniform, the contact portion between the copper sheet and the inner wall of the power connection cavity is flattened to form a wall-contacting end.

[0013] Furthermore, in order to prevent the part where the live wire and the insulating handle are connected from being bent excessively by external force and affecting the cleaning effect, a conical rubber layer with a thickness of not less than three millimeters is provided at the connection between the insulating handle and the live wire to form an anti-bending cone head.

[0014] Furthermore, the cleaning convex patterns on the wire sleeve cleaning wall are inclined patterns with the same orientation, and the cleaning convex patterns are made of engineering resin material.

[0015] In summary, the utility model has the following beneficial effects:

[0016] ① The oxide layer on the wire core can be cleaned: by setting up a cleaning head, the cleaning head is placed as a whole between the wire core and the wire sleeve of the bypass cable in an elastically compressed manner, the wire core is placed in the wire core cleaning hole of the cleaning head, and the wire sleeve cleaning wall of the cleaning head is placed on the inner wall of the wire sleeve. Then the utility model is twisted as a whole in one direction continuously, and the friction particles or friction convex strips at the wire core cleaning hole will be used to clean the oxide layer on the wire core, and the wire sleeve cleaning wall will wipe off other impurities on the inner wall of the wire sleeve.

[0017] ②Clamping is more stable: After cleaning, continue to insert the wire core until the wire core is fully inserted into the power connection mechanism. The arc-shaped groove in the power connection mechanism contacts the surface of the wire core to form a conductive connection. The power connection mechanism clamps the wire core inside under the elastic force of the spring and the copper sheet itself to ensure an effective conductive area, and then connects the test current circuit. The wire receives electricity and transmits it to the copper column. The copper column transmits electricity to the wire core through the arc-shaped groove on the copper sheet, and the bypass cable can be tested for insulation. Through the establishment of the arc head, the wire core will be smoother when inserted into the power connection mechanism, reducing the difficulty of connecting the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the cleaning head in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the power connection mechanism in the utility model;

[0022] Figure 5 It is a schematic diagram of the use principle of the power connection mechanism in the utility model;

[0023] Figure 6 It is a schematic diagram of the overall use principle of the utility model.

[0024] In the figure, 1, power connection post; 2, insulating handle; 3, live wire; 4, anti-bend cone head; 5, cleaning head; 6, plug; 7, power connection mechanism; 11, bell mouth; 12, matching hole; 13, inner concave groove; 14, power connection cavity; 51, cleaning post; 52, plastic back shell; 53, wire core cleaning hole; 54, wire sleeve cleaning wall; 55, outer convex embedded strip; 56, matching teeth; 71, copper post; 72, copper sheet; 73, arc head; 74, power connection convex; 75, wall end; 76, spring; 77, arc-shaped groove; 81, bypass cable; 82, wire core; 83, wire sleeve. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] Example:

[0027] See also Figure 1-Figure 6 , the utility model provides a technical solution:

[0028] A bypass cable insulation test plug-in device comprises: a connection post 1, an insulating handle 2, and a conducting wire 3; the connection post 1 is a columnar structure made of an insulating material, and is provided with a connection cavity 14 in the connection post 1, and a connection mechanism 7 for clamping a wire core 82 is embedded in the connection cavity 14; an insulating handle 2 is provided at the rear end of the connection post 1, and a trumpet-shaped bell mouth 11 is provided at the front end of the connection post 1, and a cleaning head 5 is detachably connected to the bell mouth 11, and a wire core cleaning hole 53 for cleaning the surface of the wire core 82 is provided in the cleaning head 5; a cable-formed conducting wire 3 is provided at the end of the insulating handle 2, and the conducting wire 3 is electrically connected to the connecting mechanism 7 inside the connection post 1.

[0029] The main body of the cleaning head 5 is a cleaning column 51, and the wire core cleaning hole 53 is arranged at the center of the cleaning column 51. The inner circumferential wall of the wire core cleaning hole 53 is provided with friction particles or friction convex strips for cleaning the oxide layer on the wire core 82, and the outer circumferential surface of the cleaning column 51 is provided with vertical cleaning convex patterns (such as Figure 1-3 As shown in the figure, a wire sleeve cleaning wall 54 is formed. Preferably, the cleaning convex patterns on the wire sleeve cleaning wall 54 are inclined patterns with the same direction (not shown in the figure), and the cleaning convex patterns can be made of materials such as engineering resin.

[0030] The main body of the cleaning head 5 is a cleaning column 51 made of a flexible material, which is fixed to a plastic rear shell 52 made of a plastic material. The contour of one side of the plastic rear shell 52 away from the cleaning column 51 matches the inner surface contour of the bell mouth 11 .

[0031] The plastic rear shell 52 has a convex insert strip 55 with an outward convex structure on one side away from the cleaning column 51, and the bell mouth 11 has a concave insert groove 13 for engaging the convex insert strip 55. The convex insert strip 55 has at least two tooth-like structures extending toward the insulating handle 2 to form mating teeth 56. After the mating teeth 56 penetrate the bell mouth 11, a latch 6 is used to insert and limit the position. The bell mouth 11 has a mating hole 12 for the mating teeth 56 to penetrate.

[0032] The main body of the power connection mechanism 7 is a copper column 71 connected to the live wire 3 and a plurality of copper sheets 72 connected in a circular array around the copper column 71. The copper sheet 72 is provided with a plurality of power connection protrusions 74 that are arc-shaped and protrude outward toward the side of the copper column 71. The copper sheet 72 as a whole has elastic deformation ability and has an elastic tendency to move toward the center of the copper column 71.

[0033] A spring 76 is fixedly connected to one side of the power connection protrusion 74 of the power connection mechanism 7 away from the axis of the copper column 71 , and the other end of the spring 76 is fixedly connected to the inner wall of the power connection cavity 14 .

[0034] The portion where the contact convex 74 contacts the wire core 82 is provided with an arc-shaped groove to form an arc-shaped groove 77.

[0035] One end of the copper sheet 72 away from the copper pillar 71 is bent in an arc shape toward a side away from the axis of the copper pillar 71 and then bent backward to abut against the inner wall of the power connection cavity 14 .

[0036] The portion of the copper sheet 72 that contacts the inner wall of the electrical connection cavity 14 is flattened to form a wall-contacting end 75 .

[0037] A conical rubber layer with a thickness of not less than three millimeters is provided at the connection between the insulating handle 2 and the live wire 3 to form an anti-bend cone head 4.

[0038] When in use, the power line 3 is connected to a circuit with a test current. At this time, the switch test current circuit is not connected. The utility model is picked up as a whole by the insulating handle 2, and the cleaning head 5 is placed as a whole between the wire core 82 and the wire sleeve 83 of the bypass cable 81 in an elastically compressed manner. The wire core 82 is inserted into the wire core cleaning hole 53 of the cleaning head 5, and the wire sleeve cleaning wall 54 of the cleaning head 5 is inserted into the inner wall of the wire sleeve 83. Then, the bypass cable insulation test plug of the utility model is continuously twisted in the opposite direction of the inclined convex pattern. The friction particles or friction convex strips at the wire core cleaning hole 53 will be used to clean the oxide layer on the cleaning wire core 82, and the wire sleeve cleaning wall 54 will be used to clean the oxide layer on the cleaning wire core 82. The grease and other impurities on the inner wall of the wire sleeve 83 are wiped off in the opposite direction of the inclination. The grease and other impurities on the inner wall of the wire sleeve 83 are continuously moved upward under the continuous action of the inclined cleaning convex patterns on the cleaning wall, and finally the grease and other impurities on the inner wall of the wire sleeve 83 are completely removed. The plug 6 inserted by the matching teeth 56 of the cleaning head 5 is pulled out, and the cleaning head 5 as a whole can be removed from the bell mouth 11. Then, a new and clean cleaning head 5 is installed in the bell mouth 11. The outer convex insert strip 55 of the new cleaning head 5 is inserted into the inner concave insert groove 13, and the matching teeth 56 pass through the matching holes 12. Then, the plug 6 is inserted into the matching teeth 56 of the new cleaning head 5, and the wire sleeve 83 is cleaned again. After cleaning, the bypass cable insulation test plug of the present invention is pulled out from the wire sleeve 83, the cleaning head 5 is removed, and the wire core 82 is completely inserted into the power connection mechanism 7. The arc-shaped groove 77 in the power connection mechanism 7 contacts the surface of the wire core 82 to form a conductive connection. The power connection mechanism 7 clamps the wire core 82 therein under the elastic force of the spring 76 and the copper sheet 72 itself to ensure an effective conductive area, and then the circuit of the test current is connected. The power-on wire 3 receives electricity and transmits it to the copper column 71. The copper column 71 transmits electricity to the wire core 82 through the arc-shaped groove 77 on the copper sheet 72, so that the bypass cable 81 can be tested for insulation. Through the establishment of the arc head 73, the wire core 82 will be smoother when inserted into the power connection mechanism 7, reducing the difficulty of connecting the device.

[0039] This specific embodiment is merely an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as it is within the scope of the claims of the present invention, it shall be protected by the patent law.

Claims

1. A bypass cable insulation test plug-in, comprising: A power connection post (1), an insulating handle (2), and a power connection wire (3); the characteristics are: the power connection post (1) is a columnar structure made of insulating material, a power connection cavity (14) is provided in the power connection post (1), and a power connection mechanism (7) for clamping a wire core (82) is embedded in the power connection cavity (14); an insulating handle (2) is provided at the rear end of the power connection post (1), and a trumpet-shaped bell mouth (11) is provided at the front end of the power connection post (1), a cleaning head (5) is detachably connected in the bell mouth (11), and a wire core cleaning hole (53) is provided in the cleaning head (5) for cleaning the surface of the wire core (82); a cable is provided at the end of the insulating handle (2) to form a power connection wire (3), and the power connection wire (3) is electrically connected to the power connection mechanism (7) inside the power connection post (1).

2. A bypass cable insulation test plug-in according to claim 1, characterized in that: The main body of the cleaning head (5) is a cleaning column (51) made of a flexible material. The wire core cleaning hole (53) is arranged at the center of the cleaning column (51). The inner circumferential wall of the wire core cleaning hole (53) is provided with friction particles or friction convex strips for cleaning the oxide layer on the wire core (82). The outer circumferential surface of the cleaning column (51) is provided with cleaning convex patterns to form a wire sleeve cleaning wall (54). The cleaning column (51) is fixed on a plastic rear shell (52) made of a plastic material. The contour of one side of the plastic rear shell (52) away from the cleaning column (51) matches the contour of the inner surface of the bell mouth (11).

3. A bypass cable insulation test plug-in according to claim 2, characterized in that: A convex insert strip (55) with an external convex structure is provided on the side of the plastic rear shell (52) away from the cleaning column (51); a concave insert groove (13) for engaging the convex insert strip (55) is provided in the bell mouth (11); the convex insert strip (55) is provided with at least two tooth-like structures extending toward the insulating handle (2) to form matching teeth (56); after the matching teeth (56) penetrate the bell mouth (11), a latch (6) is used to insert and limit the position; and a matching hole (12) for the matching teeth (56) to penetrate is provided on the bell mouth (11).

4. The bypass cable insulation test plug-in device according to claim 1, characterized in that: The main body of the power connection mechanism (7) is a copper column (71) connected to the live wire (3) and a plurality of copper sheets (72) connected in a circular array around the copper column (71). The copper sheet (72) is provided with a plurality of power connection protrusions (74) that are arc-shaped and protrude outward toward the side of the copper column (71). The copper sheet (72) as a whole has elastic deformation capability and has an elastic tendency to move toward the center of the copper column (71).

5. The bypass cable insulation test plug-in device according to claim 1, characterized in that: A spring (76) is fixedly connected to the side of the power connection protrusion (74) of the power connection mechanism (7) away from the axis of the copper column (71), and the other end of the spring (76) is fixedly connected to the inner wall of the power connection cavity (14).

6. The bypass cable insulation test plug-in device according to claim 1, characterized in that: The portion where the contact convex (74) contacts the wire core (82) is provided with an arc-shaped groove to form an arc-shaped groove (77).

7. The bypass cable insulation test plug-in device according to claim 4, characterized in that: One end of the copper sheet (72) away from the copper column (71) is bent in an arc shape toward a side away from the axis of the copper column (71) and then bent backward to abut against the inner wall of the power connection cavity (14).

8. The bypass cable insulation test plug-in device according to claim 7, characterized in that: The portion of the copper sheet (72) that contacts the inner wall of the electrical connection cavity (14) is flattened to form a wall-contacting end (75).

9. The bypass cable insulation test plug-in device according to claim 1, characterized in that: A conical rubber layer with a thickness of not less than three millimeters is provided at the connection between the insulating handle (2) and the live wire (3) to form an anti-bend cone head (4).

10. The bypass cable insulation test plug-in device according to claim 2, characterized in that: The cleaning convex patterns on the wire sleeve cleaning wall (54) are inclined patterns with the same orientation, and the cleaning convex patterns are made of engineering resin material.

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