A height-adjustable 500kV insulating rod withstand voltage test device

Abstract

This utility model relates to an adjustable-height 500kV insulating rod withstand voltage testing device, belonging to the field of withstand voltage testing technology. It includes an upper equalizing ring, a lower equalizing ring, and a base. Multiple upper test clamps are fixedly installed inside the upper equalizing ring, and multiple upper connecting rods are also installed inside the upper equalizing ring. An upper support plate is installed at one end of each upper connecting rod, and multiple upper support rods are installed at the bottom of the upper support plate. A lifting mechanism is installed on the base. A lower test clamp is connected to the outside of the lower equalizing ring, and multiple lower connecting rods are installed inside the lower equalizing ring. A lower support plate is installed at one end of each lower connecting rod, and multiple lower support rods, one end of which is fixedly installed on the base, are installed at the bottom of the lower support plate. This utility model allows for adjustment of the distance between the upper and lower equalizing rings via the lifting mechanism, enabling testing of insulating rods of different lengths at different voltage levels. It has a wide range of applications, facilitates testing of insulating rods, and improves testing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of withstand voltage testing technology, specifically relating to a 500kV insulating rod withstand voltage testing device with adjustable height. Background Technology

[0002] 500kV insulating rods (insulated operating rods) are critical safety tools used for live-line work in high-voltage power systems, and their insulation performance directly affects the safety of workers. Withstand voltage testing is an important means of verifying the electrical strength of insulating rods, ensuring that they do not break down or flashover under rated voltage. Currently, the spacing between the equalizing rings in commercially available testing devices is fixed, and most can only be used to test insulating rods of one length, limiting their applicability; the fixed installation of insulating rods is time-consuming and labor-intensive. Furthermore, considering the large installation weight and manpower required when testing multiple insulating rods simultaneously, this application proposes an adjustable-height 500kV insulating rod withstand voltage testing device to expedite installation, improve safety, and increase work efficiency. Summary of the Invention

[0003] To overcome the problems mentioned in the background art, this utility model provides an adjustable-height 500kV insulating rod withstand voltage testing device. This utility model allows for adjustment of the distance between the upper and lower equalizing rings via a lifting mechanism, enabling testing of insulating rods of different lengths at different voltage levels. It has a wide range of applications, facilitates testing of insulating rods, and improves testing efficiency.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A height-adjustable 500kV insulating rod withstand voltage test device includes an upper equalizing ring 101, a lower equalizing ring 201, and a base 3. Multiple upper test clamps 102 are fixedly installed on the inner side of the upper equalizing ring 101, and multiple upper connecting rods 104 are installed on the inner side of the upper equalizing ring 101. An upper support plate 105 is installed at one end of each upper connecting rod 104, and multiple upper support rods 103 are installed at the bottom of the upper support plate 105. A lifting mechanism 4 is installed on the base 3, and the upper support rods 103 are installed on the top of the lifting mechanism 4. A lower test clamp 203 is connected to the outer side of the lower equalizing ring 201, and multiple lower connecting rods 206 are installed on the inner side of the lower equalizing ring 201. A lower support plate 204 is installed at one end of each lower connecting rod 206, and multiple lower support rods 205, one end of which is fixedly installed on the base 3, are installed at the bottom of the lower support plate 204.

[0005] Furthermore, a thin iron chain 202 is connected to the outside of the lower equalizing ring 201, and a lower experimental clamp 203 is fixedly connected to one end of the thin iron chain 202.

[0006] Furthermore, the base 3 includes a bottom support plate 301 and a top support plate 302, and bottom support rods 303 are installed between the four corners of the bottom support plate 301 and the top support plate 302.

[0007] Furthermore, the lifting mechanism 4 is a hydraulic lifting mechanism, which includes a hydraulic lifting mechanism drive motor 401, a hydraulic cylinder 402, and a control panel 405. The hydraulic lifting mechanism drive motor 401 is mounted on the bottom support plate 301. The hydraulic lifting mechanism drive motor 401 is connected to a hydraulic cylinder 402 with one end moving through the top support plate 302. A support block 403 is mounted on the top of the hydraulic cylinder 402, and the bottom of the upper support rod 103 is mounted on the support block 403. The control panel 405 is mounted on the hydraulic lifting mechanism, and the controller on the control panel 405 is electrically connected to the hydraulic lifting mechanism drive motor 401.

[0008] Furthermore, the lower support plate 204 is provided with a plurality of first through holes 207 to facilitate the movement of the upper support rod 103, and the support block 403 is provided with a plurality of second through holes 404, through which the bottom of the lower support rod 205 moves and passes through the second through holes 404 to be installed on the top support plate 302.

[0009] The beneficial effects of this utility model are:

[0010] This invention features an adjustable lifting mechanism that allows for the adjustment of the distance between the upper and lower equalizing rings, enabling testing of different voltage levels for insulating rods of varying lengths (or segmented testing of excessively long insulating rods), thus broadening its applicability. The upper and lower test clamps facilitate quick fixation of the insulating rod, improving installation efficiency and making testing more convenient and efficient. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the equalizing ring structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the equalizing ring structure of this utility model.

[0014] Figure 4 This is a schematic diagram of the base structure of this utility model.

[0015] Figure 5 This is a schematic diagram showing the comparison before and after the height adjustment of the equalizing ring of this utility model.

[0016] Figure 6 This is a schematic diagram of the test for the insulating rod of this utility model.

[0017] Reference numerals: Upper equalizing ring 101, upper experimental clamp 102, upper support rod 103, upper connecting rod 104, upper support plate 105, lower equalizing ring 201, thin iron chain 202, lower experimental clamp 203, lower support plate 204, lower support rod 205, lower connecting rod 206, first through hole 207, base 3, bottom support plate 301, top support plate 302, bottom support rod 303, locking plate 304, fastening bolt 305, lifting mechanism 4, hydraulic lifting mechanism drive motor 401, hydraulic cylinder 402, support block 403, second through hole 404, control panel 405. Detailed Implementation

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0019] like Figure 1-6 This utility model discloses an adjustable-height 500kV insulating rod withstand voltage test device. The device includes an upper equalizing ring 101, a lower equalizing ring 201, and a base 3. Multiple upper test clamps 102 are fixedly installed inside the upper equalizing ring 101, with one end of each clamp welded to the inner side of the equalizing ring 101. Multiple upper connecting rods 104 are installed inside the upper equalizing ring 101, with one end of each connecting rod 104 fitted with an upper support plate 105. The upper support plate 105 is located on the upper equalizing ring 101. In the middle of ring 101, multiple upper support rods 103 are installed at the bottom of upper support plate 105. A lifting mechanism 4 is installed on the base 3, and the upper support rods 103 are installed on the top of the lifting mechanism 4. A lower test clamp 203 is connected to the outside of the lower equalizing ring 201, and multiple lower connecting rods 206 are installed on the inside of the lower equalizing ring 201. A lower support plate 204 is installed at one end of the lower connecting rod 206. The lower support plate 204 is located in the middle of the lower equalizing ring 201, and multiple lower support rods 205 are installed at the bottom of the lower support plate 204, with one end fixed to the base 3. A thin iron chain 202 is connected to the outside of the lower equalizing ring 201, and one end of the thin iron chain 202 is fixedly connected to the lower test clamp 203. The upper support rods 103, upper connecting rods 104, upper support plate 105, lower support plate 204, lower support rods 205, lower connecting rods 206, and base 3 are all made of insulating material. This device features an upper and lower equalizing ring. The two rings smooth the electric field gradient, preventing point discharge and ensuring stable and uniform field strength. The distance between the upper and lower equalizing rings can be adjusted via a lifting mechanism. Lifting moves the support block and the upper equalizing ring on it, adjusting the height of the upper ring while keeping the lower ring stationary. This allows for testing of different voltage levels on insulating rods of varying lengths (or segmented testing of excessively long insulating rods), making it widely applicable. The upper and lower test clamps allow for quick fixation of the insulating rod, improving installation efficiency and facilitating testing.

[0020] The base 3 includes a bottom support plate 301 and a top support plate 302. Bottom support rods 303 are installed between the four corners of the bottom support plate 301 and the top support plate 302. Locking plates 304 are installed at both ends of the bottom support rods, and the locking plates are threadedly connected to the bottom support plate and the top support plate by fastening bolts 305.

[0021] The lifting mechanism 4 is a hydraulic lifting mechanism, which includes a hydraulic lifting mechanism drive motor 401, a hydraulic cylinder 402, and a control panel 405. The hydraulic lifting mechanism drive motor 401 is mounted on the bottom support plate 301 and is indirectly connected to the hydraulic cylinder 402, one end of which moves through the top support plate 302. This hydraulic lifting mechanism is existing technology, and its driving principle is as follows: the hydraulic lifting mechanism drive motor drives the hydraulic pump to operate, converting mechanical energy into hydraulic energy, causing the hydraulic oil to generate pressure and flow. The hydraulic oil is delivered to the hydraulic cylinder through hydraulic pipelines, pushing the piston rod of the hydraulic cylinder to extend and retract. The piston rod is then mechanically connected to the hydraulic cylinder (such as by bolts or pins), thereby driving the hydraulic cylinder to rise and fall. A support block 403, which is an insulating block, is mounted on the top of the hydraulic cylinder 402. The bottom of the upper support rod 103 is mounted on the support block 403. The control panel 405 is mounted on the hydraulic lifting mechanism, and the controller on the control panel 405 is electrically connected to the hydraulic lifting mechanism drive motor 401. The control panel features an up button, a down button, a power button, and a display screen that connects to the controller. The display screen shows the height of the upper equalizing ring, and the height of the upper equalizing ring can be adjusted using the up or down buttons. The controller also has a wireless communication module that can connect to a remote control terminal for convenient remote control of the upper equalizing ring's height.

[0022] The lower support plate 204 has multiple first through holes 207 for the upper support rod 103 to pass through, and the support block 403 has multiple second through holes 404. The bottom of the lower support rod 205 moves through the second through holes 404 and is mounted on the top support plate 302. When the upper equalizing ring is raised or lowered, the upper support rod moves through the first through holes, and the support block can move up and down outside the lower support rod, making it easy to adjust the height of the upper equalizing ring.

[0023] Work process:

[0024] The working principle of this utility model is as follows: The distance between the upper equalizing ring 101 and the lower equalizing ring 201 can be adjusted by the lifting mechanism 4. The lifting mechanism 4 can drive the support block 403 and the upper equalizing ring 101 on the support block 403 to move, adjusting the height of the upper equalizing ring 101 while keeping the lower equalizing ring 201 stationary. After adjusting the distance between the upper and lower equalizing rings, the two ends of the insulating rod are installed on the device through the upper test clamp 102 and the lower test clamp 203. A test voltage is applied, and a continuous and stable AC (DC) high voltage is applied to the insulating rod. By observing its physical state and insulation performance, it is determined whether it meets the production and use specifications and requirements.

[0025] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A height-adjustable 500kV insulating rod withstand voltage test device, characterized in that: The adjustable-height 500kV insulating rod withstand voltage test device includes an upper equalizing ring (101), a lower equalizing ring (201), and a base (3). Multiple upper test clamps (102) are fixedly installed on the inner side of the upper equalizing ring (101), and multiple upper connecting rods (104) are installed on the inner side of the upper equalizing ring (101). An upper support plate (105) is installed at one end of the upper connecting rod (104), and multiple upper support rods (103) are installed at the bottom of the upper support plate (105). A lifting mechanism (4) is installed on the base (3), and an upper support rod (103) is installed on the top of the lifting mechanism (4). A lower test clamp (203) is connected to the outside of the lower equalizing ring (201), and multiple lower connecting rods (206) are installed on the inside of the lower equalizing ring (201). A lower support plate (204) is installed at one end of the lower connecting rod (206), and multiple lower support rods (205) with one end fixed on the base (3) are installed at the bottom of the lower support plate (204).

2. The adjustable-height 500kV insulating rod withstand voltage test device according to claim 1, characterized in that: A thin iron chain (202) is connected to the outside of the lower equalizing ring (201), and a lower experimental clamp (203) is fixedly connected to one end of the thin iron chain (202).

3. The adjustable-height 500kV insulating rod withstand voltage test device according to claim 2, characterized in that: The base (3) includes a bottom support plate (301) and a top support plate (302), and bottom support rods (303) are installed between the four corners of the bottom support plate (301) and the top support plate (302).

4. The adjustable-height 500kV insulating rod withstand voltage test device according to claim 3, characterized in that: The lifting mechanism (4) is a hydraulic lifting mechanism, which includes a hydraulic lifting mechanism drive motor (401), a hydraulic cylinder (402), and a control panel (405). The hydraulic lifting mechanism drive motor (401) is mounted on the bottom support plate (301). The hydraulic lifting mechanism drive motor (401) is connected to a hydraulic cylinder (402) with one end moving through the top support plate (302). A support block (403) is mounted on the top of the hydraulic cylinder (402). The bottom of the upper support rod (103) is mounted on the support block (403). The control panel (405) is mounted on the hydraulic lifting mechanism, and the controller on the control panel (405) is electrically connected to the hydraulic lifting mechanism drive motor (401).

5. The adjustable-height 500kV insulating rod withstand voltage test device according to claim 4, characterized in that: The lower support plate (204) is provided with a plurality of first through holes (207) to facilitate the movement of the upper support rod (103), and the support block (403) is provided with a plurality of second through holes (404). The bottom of the lower support rod (205) moves through the second through holes (404) and is installed on the top support plate (302).

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