A device for increasing dielectric loss at water terminals for cable testing
By adding a dielectric loss device and an angle adjustment mechanism to the water terminal, the problem that existing equipment cannot measure the loss of medium and high voltage cables was solved, enabling synchronous measurement and improving detection accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HIPO ELECTRIX SCI & TECH
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-26
AI Technical Summary
Existing water terminal equipment cannot simultaneously measure loss values during medium and high voltage cable testing, has low detection integration, and cannot meet the testing requirements of high voltage cross-linked cables.
Design a water terminal device for cable testing to increase dielectric loss. The device is connected to the test tap via a terminal block, and combined with an angle adjustment mechanism and a limit assembly, it enables synchronous measurement by a dielectric loss detector.
This technology enables simultaneous measurement of loss values in medium and high voltage cables during partial discharge testing, improving the accuracy and stability of the detection.
Smart Images
Figure CN224287016U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of cable testing equipment, specifically to a device for increasing dielectric loss at a water terminal for cable testing. Background Technology
[0002] In the testing of power cables, the requirements for the terminals used are very high. General oil-water terminals, whose operating principle is to enhance the insulation level of the dielectric and increase the breakdown field strength, are insufficient for testing 110kV and above high-voltage cross-linked cables. Deionized water terminals are typically used to achieve a uniform electric field distribution, meeting the testing requirements. However, existing water terminal testing equipment can only perform withstand voltage and partial discharge tests on medium and high-voltage cables, and cannot measure the cable loss values during full-power operation, resulting in low integration of testing capabilities. Utility Model Content
[0003] This utility model addresses the problems mentioned above by specifically designing a water terminal for cable testing that adds a dielectric loss device. This device enables the water terminal to simultaneously measure the loss values of medium and high voltage cables operating at full power during partial discharge testing.
[0004] To achieve the above objectives, this utility model provides a water terminal dielectric loss increasing device for cable testing, comprising a pipe body, a base plate, an angle adjustment mechanism, and a dielectric loss device. The pipe body is rotatably connected to the base plate through the angle adjustment mechanism, and the dielectric loss device is electrically connected to the test tap of the pipe body through a terminal block.
[0005] Furthermore, the angle adjustment mechanism includes a column, a first hinge rod, a second hinge rod, and a telescopic assembly. The column is fixedly connected to the base plate. One end of the first hinge rod and the second hinge rod are rotatably connected to the base plate, and the other end is rotatably connected to both ends of the tube. One end of the telescopic assembly is rotatably connected to the column, and the other end is driven to connect to the first hinge rod.
[0006] Furthermore, the telescopic component is a hydraulic cylinder, and the lugs at both ends of the hydraulic cylinder are rotatably connected to the column and the hinge rod 1 respectively via pins.
[0007] Furthermore, the base plate is fixedly connected with aligned hinge support one and hinge support two. Hinge rod one is rotatably connected to hinge support one via a pin, and hinge rod two is rotatably connected to hinge support two via a pin.
[0008] Furthermore, the columns are symmetrically supported with diagonal tie rods.
[0009] Furthermore, the substrate has multiple sets of inverted T-shaped grooves, and limit components are movably installed in the grooves.
[0010] Furthermore, the limiting component includes limiting block one, limiting block two, limiting block three and limiting block four. Limiting block one and limiting block two are symmetrically arranged on both sides of the hinge support one and abut against the hinge rod one. Limiting block three and limiting block four are symmetrically arranged on both sides of the hinge support two and abut against the hinge rod two.
[0011] Furthermore, the limiting component also includes screw and nut components, which are respectively installed between the limiting block one and the limiting block two, and between the limiting block three and the limiting block four.
[0012] Furthermore, the limiting block one, limiting block two, limiting block three and limiting block four are also equipped with elastic pads.
[0013] In summary, this utility model has the following advantages and beneficial technical effects:
[0014] 1. This utility model adds a dielectric loss device. The dielectric loss detector is connected to the test tap of the pipe body through the wiring terminal, so that when the water terminal performs a partial discharge test on the cable, it can simultaneously measure the loss value of the medium and high voltage cable under full power operation.
[0015] 2. The angle adjustment mechanism in this utility model adopts a hydraulic cylinder combined with a hinge multi-bar structure to increase the flexibility of the tube body rotation.
[0016] 3. In this utility model, the limiting component further restricts the position of the hinge rod. Adjustable limiting blocks are symmetrically clamped on both sides of the hinge rod, and the relative position of the limiting blocks is fixed by screws and nuts, which increases the stability of the pipe body during water terminal detection and thus improves the detection accuracy. Attached Figure Description
[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0018] Figure 1 These are structural schematic diagrams of this utility model in two states;
[0019] Figure 2 This is a three-dimensional schematic diagram of some structures in this utility model;
[0020] Figure 3 This is a rear view schematic diagram of part of the structure of this utility model;
[0021] Figure 4 This is a three-dimensional schematic diagram of the limiting component in this utility model;
[0022] Figure 5 This is a front view schematic diagram of the limiting component in this utility model.
[0023] The reference numerals in the attached figures are:
[0024] 1. Pipe body; 2. Base plate; 21. Chute;
[0025] 3. Angle adjustment mechanism; 31. Column; 32. Hinge rod one; 33. Hinge rod two; 34. Telescopic assembly; 35. Hinge support one; 36. Hinge support two; 37. Diagonal tie rod;
[0026] 4. Dielectric loss device; 5. Limiting component; 51. Limiting block one; 52. Limiting block two; 53. Limiting block three; 54. Limiting block four. Detailed Implementation
[0027] The following is in conjunction with the appendix Figures 1-5 The present invention will be described in further detail as follows:
[0028] like Figure 1 As shown, this embodiment discloses a water terminal loss-increasing device for cable testing, including a pipe body 1, a base plate 2, an angle adjustment mechanism 3, and a loss-increasing device 4. The pipe body 1 is rotatably connected to the base plate 2 through the angle adjustment mechanism 3. The loss-increasing device 4 is a loss tester, which is electrically connected to the test tap of the pipe body 1 through a terminal block. The angle adjustment mechanism 3 includes a column 31, a first hinge rod 32, a second hinge rod 33, and a telescopic component 34. The column 31 is welded and fixed above the base plate 2. One end of the first hinge rod 32 and the second hinge rod 33 are rotatably connected to the base plate 2, and the other end is rotatably connected to both ends of the pipe body 1. One end of the telescopic component 34 is rotatably connected to the column 31, and the other end is driven to the middle of the first hinge rod 32. The telescopic component 34 is a hydraulic cylinder, and the lugs at both ends of the hydraulic cylinder are rotatably connected to the column 31 and the first hinge rod 32 through pins.
[0029] like Figures 2-3 As shown, the base plate 2 is fixedly connected with a first hinge support 35 and a second hinge support 36 that are aligned laterally. The first hinge rod 32 is rotatably connected to the first hinge support 35 via a pin, and the second hinge rod 33 is rotatably connected to the second hinge support 36 via a pin.
[0030] like Figure 1 As shown, the column 31 is symmetrically welded with diagonal tie rods 37 on both sides, and the other end of the diagonal tie rods 37 is welded to the base plate 2.
[0031] like Figures 4-5As shown, the substrate 2 has two sets of inverted T-shaped sliding grooves 21, and a limiting component 5 is movably inserted into the sliding groove 21. The limiting component 5 includes a limiting block 1 51, a limiting block 2 52, a limiting block 3 53, and a limiting block 4 54. The limiting block 1 51 and the limiting block 2 52 are symmetrically arranged on both sides of the hinge support 1 35 and together abut against the hinge rod 1 32 and the hinge support 1 35. The limiting block 3 53 and the limiting block 4 54 are symmetrically arranged on both sides of the hinge support 2 36 and together clamp the hinge rod 2 33 and the hinge support 2 36. The limiting component 5 also includes screw and nut components, which are respectively installed between the limiting block 1 51 and the limiting block 2 52, and between the limiting block 3 53 and the limiting block 4 54. The clamping surfaces of the limiting block 1 51, the limiting block 2 52, the limiting block 3 53, and the limiting block 4 54 are also equipped with elastic pads (not shown in the figure) to reduce friction loss.
[0032] The working principle of the water terminal dielectric loss increasing device for cable testing according to this utility model is as follows:
[0033] While the water terminal is conducting a partial discharge test, the dielectric loss device 4 is connected to the test tap of the pipe body 1 via a terminal block, enabling the measurement of the loss value of medium and high voltage cables during full-power operation. The base plate 2 and the angle adjustment mechanism 3 constitute a movable support structure for the pipe body 1, and the tilt angle of the pipe body 1 is adjusted by the extension and retraction of the hydraulic cylinder. After the angle is adjusted, the tilt angle of the hinge rod is fixed by clamping the limiting components 5.
[0034] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A device for increasing dielectric loss at a water terminal for cable testing, characterized in that: It includes a tube body, a base plate, an angle adjustment mechanism, and a dielectric loss device. The tube body is rotatably connected to the base plate through the angle adjustment mechanism, and the dielectric loss device is electrically connected to the test tap of the tube body through a terminal block.
2. The device for increasing dielectric loss at a water terminal for cable testing according to claim 1, characterized in that: The angle adjustment mechanism includes a column, a first hinge rod, a second hinge rod, and a telescopic assembly. The column is fixedly connected to the base plate. One end of the first hinge rod and the second hinge rod are rotatably connected to the base plate, and the other end is rotatably connected to both ends of the tube. One end of the telescopic assembly is rotatably connected to the column, and the other end is driven to connect to the first hinge rod.
3. A device for increasing dielectric loss at a water terminal for cable testing according to claim 2, characterized in that: The telescopic component is a hydraulic cylinder, and the lugs at both ends of the hydraulic cylinder are rotatably connected to the column and the hinge rod 1 respectively via pins.
4. A device for increasing dielectric loss at a water terminal for cable testing according to claim 2, characterized in that: The base plate is fixedly connected to an aligned hinge support one and a hinge support two. The hinge rod one is rotatably connected to the hinge support one via a pin, and the hinge rod two is rotatably connected to the hinge support two via a pin.
5. A device for increasing dielectric loss at a water terminal for cable testing according to claim 2, characterized in that: The columns are symmetrically supported by diagonal tie rods.
6. A device for increasing dielectric loss at a water terminal for cable testing according to claim 4, characterized in that: The substrate has multiple sets of inverted T-shaped grooves, and limit components are movably installed in the grooves.
7. A device for increasing dielectric loss at a water terminal for cable testing according to claim 6, characterized in that: The limiting assembly includes limiting block one, limiting block two, limiting block three and limiting block four. Limiting block one and limiting block two are symmetrically arranged on both sides of the hinge support one and abut against the hinge rod one. Limiting block three and limiting block four are symmetrically arranged on both sides of the hinge support two and abut against the hinge rod two.
8. A device for increasing dielectric loss at a water terminal for cable testing according to claim 7, characterized in that: The limiting assembly also includes screws and nuts, which are respectively installed between the first limiting block and the second limiting block, and between the third limiting block and the fourth limiting block.
9. A device for increasing dielectric loss at a water terminal for cable testing according to claim 7, characterized in that: The limiting blocks 1, 2, 3 and 4 are also equipped with elastic pads.