Medium and low voltage cable intermediate joint test equipment

Abstract

The utility model relates to the technical field of cable testing, and discloses middle and low voltage cable intermediate joint testing equipment which comprises a base, a high-voltage testing cylinder and a low-voltage testing cylinder are arranged at the front end and the rear end of the center of the upper end face of the base respectively, and the lower end of the high-voltage testing cylinder is fixedly connected to the upper end face of the base. The lower end of the low-voltage test cylinder is slidably connected to the upper end face of the base, a composite sleeve is arranged at the center of the upper end face of the high-voltage test cylinder, and the upper end of the composite sleeve is connected with a grading ring. According to the utility model, the high-voltage test cylinder and the low-voltage test cylinder respectively act on two pairs of different cables, and the two fixed hoop racks and the two movable hoop racks are respectively arranged, so that the cables can be well fixed, and meanwhile, the high-voltage test operation and the low-voltage test operation can be respectively carried out on the intermediate joint of the cable; the structure is simple and the test is convenient.

Description

Technical Field

[0001] This utility model relates to the field of cable accessory testing, and in particular to testing equipment for intermediate joints of medium and low voltage cables. Background Technology

[0002] With the continuous development of power systems, the application of medium and low voltage cable joints in power transmission networks is becoming increasingly widespread. Their safety and reliability are directly related to the stable operation of the entire power system. As a key component in cable lines, the quality and installation process of medium and low voltage cable joints are crucial to the long-term stable operation of cables. However, in actual operation, cable joints often suffer from increased contact resistance, decreased insulation performance, and even cable faults due to improper installation, material aging, external damage, and other reasons. Therefore, rigorous testing and inspection of medium and low voltage cable joints are an important link in ensuring the safe operation of cable lines.

[0003] However, existing testing equipment still has some shortcomings and areas for improvement in actual use. Currently, intermediate joint testing mainly relies on manual installation, which depends on the experience and skill level of the personnel, is labor-intensive, and is prone to deviations in test results due to operational errors. Therefore, those skilled in the art have provided intermediate joint testing equipment for medium and low voltage cables to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a test device for intermediate joints of medium and low voltage cables. When in use, a high-voltage test cylinder and a low-voltage test cylinder are set up to act on one end of two different pairs of cables respectively. Through two fixed clamps and two movable clamps, the cables can be well fixed and the intermediate joints of the cables can be tested. It has a simple structure and is convenient for testing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a medium and low voltage cable intermediate joint testing device, including a base, a high voltage test cylinder and a low voltage test cylinder respectively arranged at the front and rear ends of the upper end surface of the base, the lower end of the high voltage test cylinder is fixedly connected to the upper end surface of the base, the lower end of the low voltage test cylinder is slidably connected to the upper end surface of the base, a composite sleeve is arranged at the center of the upper end surface of the high voltage test cylinder, and an equalizing ring is connected to the upper end of the composite sleeve;

[0006] The high-pressure test cylinder has two first manual pressure cones on its rear side walls. The rear ends of the two first manual pressure cones are respectively provided with fixed clamps. The lower ends of the two fixed clamps are respectively fixedly connected to the upper end surface of the base. The rear ends of the two first manual pressure cones are respectively connected to first cables. The rear ends of the two first cables pass through the two fixed clamps and lead to the rear side respectively.

[0007] The two sides of the front wall of the low-pressure test cylinder are respectively provided with second manual pressure cones, and the front sides of the two second manual pressure cones are respectively provided with movable clamps. The lower ends of the two movable clamps are respectively fixedly connected to the upper end surface of the base. The front ends of the two second manual pressure cones are respectively connected with second cables. The front ends of the two second cables pass through the rear side walls of the two movable clamps and lead to the front ends respectively.

[0008] With the above technical solution, when in use, by setting up high-voltage test cylinders and low-voltage test cylinders to act on one end of two different pairs of cables respectively, and by setting up two fixed clamps and two movable clamps respectively, the cables can be well fixed, and high-voltage and low-voltage tests can be performed on the cables separately. It has the advantages of simple structure and convenient testing.

[0009] Furthermore, a placement plate is provided at the center of the upper end face of the base, and the center of the lower end face of the placement plate is slidably connected to the upper end face of the base on both sides. A second telescopic cylinder is provided inside the base at the lower end of the placement plate. One end of the second telescopic cylinder is fixedly connected to an inner side wall of the base, and the output end of the second telescopic cylinder is fixedly connected to the lower end face of the low-pressure test cylinder. Intermediate joint support plates are connected to the center of the upper end face of the placement plate on both sides. Front and rear fittings are provided at the front and rear ends of the two intermediate joint support plates, respectively. The lower ends of the two front fittings and the lower ends of the two rear fittings are fixedly connected to the upper end face of the placement plate. Intermediate joints are provided at the upper ends of the two intermediate joint support plates.

[0010] The above technical solution, by setting two intermediate joint support plates, can ensure the stability of the connection and contact between the first cable and the second cable. At the same time, the second telescopic cylinder can be set to adjust the position of the low-pressure test cylinder during the test.

[0011] Furthermore, the two ends of the two intermediate joints pass through the front and rear fittings on both sides respectively, and lead to the front and rear sides respectively;

[0012] The above technical solution achieves a good fixation and retention of the cable.

[0013] Furthermore, a first telescopic cylinder is provided inside the base at the lower end of the placement plate. One end of the first telescopic cylinder is connected to an inner side wall of the base, and the output end of the first telescopic cylinder is fixedly connected to the lower end surface of the placement plate.

[0014] The above technical solution facilitates the movement of the placement plate in two directions during the test, allowing for adjustments during the test.

[0015] Furthermore, the upper ends of the two intermediate joints are respectively provided with retainers, and the lower ends of the two retainers are respectively fixedly connected to the upper surface of the placement plate;

[0016] The above technical solution enables the upper end of the intermediate joint to be pressed and held, ensuring safety and stability during the test.

[0017] Furthermore, the lower ends of the two intermediate joint plates respectively penetrate the upper end surface of the placement plate and extend to the lower end;

[0018] The above technical solution allows for adjustment of the height of the two intermediate connector plates according to actual needs, thereby meeting the usage requirements under different circumstances.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, by setting high-voltage test cylinders and low-voltage test cylinders to act on two different cable sections respectively, and by setting two fixed clamps and two movable clamps respectively, the cable can be well fixed, and high-voltage and low-voltage tests can be performed on the cable separately. It has the advantages of simple structure and convenient testing.

[0021] 2. In this utility model, by setting a first telescopic cylinder and a second telescopic cylinder, the position of the placement plate and the position of the low-pressure test cylinder can be adjusted bidirectionally during the test, which can better match the use of high-pressure and low-pressure testing during the test and is convenient to adjust. Attached Figure Description

[0022] Figure 1 This is an isometric view of the medium and low voltage cable intermediate joint testing equipment proposed in this utility model;

[0023] Figure 2 This is a front view of the testing equipment for intermediate joints of medium and low voltage cables proposed in this utility model;

[0024] Figure 3 This is a top view of the testing equipment for intermediate joints of medium and low voltage cables proposed in this utility model;

[0025] Figure 4 This is a side view of the testing equipment for intermediate joints of medium and low voltage cables proposed in this utility model.

[0026] Legend:

[0027] 1. Equalizing ring; 2. Composite sleeve; 3. High-pressure test cylinder; 4. Base; 5. First manual pressure cone; 6. Fixed clamp frame; 7. First cable; 8. Front fitting; 9. Intermediate joint support plate; 10. Second manual pressure cone; 11. Low-pressure test cylinder; 12. Second cable; 13. Movable clamp frame; 14. Intermediate joint; 15. Rear fitting; 16. First telescopic cylinder; 17. Placement plate; 18. Second telescopic cylinder. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figure 1-4 An embodiment of this utility model provides a medium and low voltage cable intermediate joint testing device, including a base 4. A high voltage test cylinder 3 and a low voltage test cylinder 11 are respectively arranged at the front and rear ends of the upper end surface of the base 4. The lower end of the high voltage test cylinder 3 is fixedly connected to the upper end surface of the base 4, and the lower end of the low voltage test cylinder 11 is slidably connected to the upper end surface of the base 4. A composite sleeve 2 is arranged at the center of the upper end surface of the high voltage test cylinder 3, and an equalizing ring 1 is connected to the upper end of the composite sleeve 2.

[0030] The high-pressure test cylinder 3 has two first manual pressure cones 5 on its rear side wall. The rear ends of the two first manual pressure cones 5 are respectively provided with fixed clamps 6. The lower ends of the two fixed clamps 6 are respectively fixedly connected to the upper end surface of the base 4. The rear ends of the two first manual pressure cones 5 are respectively connected with first cables 7. The rear ends of the two first cables 7 pass through the two fixed clamps 6 and lead to the rear side respectively.

[0031] The low-voltage test cylinder 11 has two second manual pressure cones 10 on its front side walls. The two second manual pressure cones 10 have movable clamps 13 on their front sides. The lower ends of the two movable clamps 13 are fixedly connected to the upper surface of the base 4. The front ends of the two second manual pressure cones 10 are connected to the second cables 12. The front ends of the two second cables 12 pass through the rear side walls of the two movable clamps 13 and lead to the front ends. By setting the high-voltage test cylinder 3 and the low-voltage test cylinder 11 to act on one end of two different pairs of cables, the cables can be well fixed by the two fixed clamps 6 and the two movable clamps 13. At the same time, the high-voltage and low-voltage tests of the cables can be performed separately. The structure is simple and the test is convenient.

[0032] A placement plate 17 is provided at the center of the upper end face of the base 4. The lower end face of the placement plate 17 is slidably connected to the upper end face of the base 4 at both sides. A second telescopic cylinder 18 is provided inside the base 4 at the lower end of the placement plate 17. One end of the second telescopic cylinder 18 is fixedly connected to an inner side wall of the base 4, and the output end of the second telescopic cylinder 18 is fixedly connected to the lower end face of the low-pressure test cylinder 11. Intermediate connector plates 9 are connected to the center of the upper end face of the placement plate 17 at both sides. Front fittings 8 and rear fittings 15 are provided at the front and rear ends of the two intermediate connector plates 9, respectively. The lower ends of the two front fittings 8 and the two rear fittings 15 are fixedly connected to the upper end face of the placement plate 17. Intermediate connectors 14 are provided at the upper ends of the two intermediate connector plates 9. By setting two intermediate connector plates 9, the stability of the connection and contact between the first cable 7 and the second cable 12 can be ensured. At the same time, the second telescopic cylinder 18 can be used to adjust the position of the low-pressure test cylinder 11 during the test.

[0033] The two ends of the two intermediate joints 14 pass through the front fittings 8 and the rear fittings 15 on both sides respectively, and lead to the front and rear sides respectively. A first telescopic cylinder 16 is provided inside the base 4 at the lower end of the placement plate 17. One end of the first telescopic cylinder 16 is connected to an inner side wall of the base 4. The output end of the first telescopic cylinder 16 is fixedly connected to the lower end surface of the placement plate 17. The upper ends of the two intermediate joints 14 are respectively provided with retainers. The lower ends of the two retainers are respectively fixedly connected to the upper end surface of the placement plate 17. The lower ends of the two intermediate joint support plates 9 pass through the upper end surface of the placement plate 17 respectively and lead to the lower end respectively.

[0034] Working Principle: This utility model is a testing device for intermediate joints of medium and low voltage cables. In use, one end of each of the two first cables 7 is connected to the front fitting 8, and one end of each of the two first cables 7 is inserted into two first manual pressure cones 5. The two first manual pressure cones 5 are installed on the two output ends of the high-voltage test cylinder 3, and the two first cables 7 are restricted and fixed by two fixing clamps 6. Then, the two intermediate joints 14 are placed on the upper ends of the two intermediate joint support plates 9 and fixed and restricted. The connection method of the second cable 12 is the same as that of the first cable 7. Then, by controlling the second telescopic cylinder 18, the low-pressure test cylinder 11 is slid towards the high-pressure test cylinder 3. Then, by controlling the first telescopic cylinder 16, the placement plate 17 is moved to one side until the upper intermediate connector 14 contacts the front fitting 8 or the rear fitting 15. The high-voltage lead is then connected, and the test begins. After the test, the first telescopic cylinder 16 is activated to slide the placement plate 17 to the other side until the fitting is exposed from the product, then it stops. Finally, the second telescopic cylinder 18 pushes the low-pressure test cylinder 11 to the rear. When the cable is pulled out from inside the intermediate connector 14, the test is completed.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A testing device for intermediate joints of medium and low voltage cables, comprising a base (4), characterized in that: The upper end face of the base (4) is provided with a high-pressure test cylinder (3) and a low-pressure test cylinder (11) at the front and rear ends respectively. The lower end of the high-pressure test cylinder (3) is fixedly connected to the upper end face of the base (4), and the lower end of the low-pressure test cylinder (11) is slidably connected to the upper end face of the base (4). A composite sleeve (2) is provided at the center of the upper end face of the high-pressure test cylinder (3), and an equalizing ring (1) is connected to the upper end of the composite sleeve (2). The high-pressure test cylinder (3) has two first manual pressure cones (5) on its rear side wall. The two first manual pressure cones (5) are respectively provided with fixed clamps (6) at their rear ends. The lower ends of the two fixed clamps (6) are respectively fixedly connected to the upper end surface of the base (4). The two first manual pressure cones (5) are respectively connected with first cables (7). The rear ends of the two first cables (7) pass through the two fixed clamps (6) and lead to the rear side respectively. The low-pressure test cylinder (11) has two second manual pressure cones (10) on its front side wall. The two second manual pressure cones (10) have movable clamps (13) on their front sides. The lower ends of the two movable clamps (13) are fixedly connected to the upper surface of the base (4). The front ends of the two second manual pressure cones (10) are connected to second cables (12). The front ends of the two second cables (12) pass through the rear side wall of the two movable clamps (13) and lead to the front end.

2. The testing equipment for intermediate joints of medium and low voltage cables according to claim 1, characterized in that: A placement plate (17) is provided at the center of the upper end face of the base (4). The center of the lower end face of the placement plate (17) is slidably connected to the upper end face of the base (4) on both sides. A second telescopic cylinder (18) is provided inside the base (4) at the lower end of the placement plate (17). One end of the second telescopic cylinder (18) is fixedly connected to an inner side wall of the base (4). The output end of the second telescopic cylinder (18) is fixedly connected to the lower end face of the low-pressure test cylinder (11). Intermediate joint support plates (9) are connected to the center of the upper end face of the placement plate (17) on both sides. Front fittings (8) and rear fittings (15) are provided at the front and rear ends of the two intermediate joint support plates (9). The lower ends of the two front fittings (8) and the two rear fittings (15) are fixedly connected to the upper end face of the placement plate (17). Intermediate joints (14) are provided at the upper ends of the two intermediate joint support plates (9).

3. The testing equipment for intermediate joints of medium and low voltage cables according to claim 1, characterized in that: The two ends of the two intermediate joints (14) pass through the front fittings (8) and the rear fittings (15) on both sides respectively, and lead to the front and rear sides respectively.

4. The testing equipment for intermediate joints of medium and low voltage cables according to claim 1, characterized in that: A first telescopic cylinder (16) is provided inside the base (4) at the lower end of the placement plate (17). One end of the first telescopic cylinder (16) is connected to an inner side wall of the base (4), and the output end of the first telescopic cylinder (16) is fixedly connected to the lower end surface of the placement plate (17).

5. The testing equipment for intermediate joints of medium and low voltage cables according to claim 1, characterized in that: The upper ends of the two intermediate joints (14) are respectively provided with retainers, and the lower ends of the two retainers are respectively fixedly connected to the upper surface of the placement plate (17).

6. The testing equipment for intermediate joints of medium and low voltage cables according to claim 1, characterized in that: The lower ends of the two intermediate joint plates (9) pass through the upper end face of the placement plate (17) and extend to the lower end respectively.

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