Direct-current high-voltage generator for electrical test

Abstract

The utility model discloses a direct current high voltage generator for an electrical test, which comprises a voltage doubling cylinder main body, a telescopic supporting mechanism is arranged at the bottom of the voltage doubling cylinder main body, the telescopic supporting mechanism comprises a fixed base, an adjusting cam, a sliding rod, a spring and a leveling foot pad, and the fixed base is fixedly arranged at the bottom of the voltage doubling cylinder main body. A sliding hole is formed in the side end face of the fixed base, the sliding rod is installed in the sliding hole and is in elastic sliding connection with the fixed base through a spring, the adjusting cam is installed in the center of the fixed base and rotationally connected with the fixed base, the sliding rod is in sliding contact connection with the adjusting cam, and the leveling foot pad is movably installed on the lower end face of the sliding rod. The portable voltage-multiplying cylinder support has the advantages of being convenient to carry and stable in supporting, and solves the problems that in the prior art, a voltage-multiplying cylinder is poor in stability or a support of the voltage-multiplying cylinder is difficult to disassemble and install and inconvenient to carry, and electrical test efficiency is seriously affected.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage generators, in particular to a direct current high-voltage generator for electrical testing. Background Art

[0002] In the field of electrical testing, DC high-voltage generators are indispensable equipment for conducting key performance tests such as insulation withstand voltage, dielectric loss, and partial discharge. These tests are crucial to ensure the safe operation of power equipment, especially in the quality control and fault diagnosis of high-voltage transmission systems, transformers, cables, and various high-voltage electrical components. Traditional DC high-voltage generators usually include a voltage multiplier and a control box. The voltage multiplier is stored in the control box and is taken out when in use.

[0003] Most of the existing voltage multiplier cylinders are of thin and straight structure with a small bottom support area. During electrical experiments, novices can easily fall due to instability during operation. In the prior art, bolts are usually used to install an extension bracket to enhance the stability of its support. However, in order to store the voltage multiplier cylinder, it must be disassembled and reassembled at the end of each experiment, which is very cumbersome and affects the experimental efficiency. Therefore, a DC high-voltage generator for electrical experiments is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a DC high voltage generator for electrical testing, which has the advantages of being easy to carry and having a stable support, and solves the problem in the prior art that the voltage multiplier tube has poor stability or the bracket of the voltage multiplier tube is difficult to disassemble and install and is inconvenient to carry, which seriously affects the efficiency of electrical testing.

[0005] To achieve the above object, the utility model provides the following technical solution: a DC high voltage generator for electrical testing, comprising a voltage multiplier cylinder body, the bottom of which is provided with a telescopic support mechanism;

[0006] The telescopic support mechanism includes a fixed base, an adjusting cam, a sliding rod, a spring and a leveling foot pad. The fixed base is fixedly installed at the bottom of the pressure multiplier cylinder body. The side end surface of the fixed base is provided with a sliding hole. The sliding rod is installed in the sliding hole and is elastically slidably connected to the fixed base through a spring. The adjusting cam is installed at the center of the fixed base and is rotatably connected to the fixed base. The sliding rod is connected to the adjusting cam in sliding contact, and the leveling foot pad is movably installed on the lower end surface of the sliding rod.

[0007] As a preferred DC high voltage generator for electrical testing of the utility model, the adjusting cam includes a central axis, a guide portion and a positioning portion, the guide portion is an arc-shaped structure, and the side end surface of the positioning portion is provided with a positioning groove corresponding to the slide rod.

[0008] As a preferred embodiment of the DC high voltage generator for electrical testing of the utility model, a limiting plate is provided at the end of the positioning portion, and a reinforcing rib is provided at the bottom of the guide portion.

[0009] As a preferred embodiment of the DC high voltage generator for electrical testing of the utility model, a finger groove is provided on the lower end surface of the central axis, and a vertical plate is provided in the finger groove.

[0010] As a preferred embodiment of the DC high voltage generator for electrical testing of the utility model, a guide groove is arranged on the surface of the slide rod, and a guide block corresponding to the guide groove is arranged in the slide hole.

[0011] As a preferred DC high voltage generator for electrical testing of the utility model, the top of the leveling foot pad is provided with an external threaded screw rod, the bottom of the sliding rod is provided with a screw hole, and the leveling foot pad nail is threadedly connected with the sliding rod through the external threaded screw rod and the screw hole.

[0012] As a preferred embodiment of the DC high voltage generator for electrical testing of the utility model, the top of the sliding rod is a spherical top structure.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model provides a telescopic support mechanism at the bottom of the pressure multiplier cylinder body, especially the elastic sliding connection design of the slide rod and the spring, so that the equipment can be easily folded or contracted to a more compact form when not in use, which is convenient for transportation and storage. The extension and retraction of the slide rod is controlled by the rotation of the cam, and the operation is simple and quick. The support legs can be quickly deployed and retracted by just a slight turn, which greatly simplifies the setting process of the equipment, does not require additional tools, improves the efficiency of on-site operations, and meets the needs of rapid response experiments or inspections.

[0015] 2. The utility model uses a telescopic support mechanism so that when the equipment is in use, the slide rod can be extended outward to increase the support area. The guide groove on the surface of the slide rod cooperates with the guide block in the slide hole, which effectively prevents the slide rod from rotating or shaking during the extension and retraction process, ensuring the precise alignment and stable support of the leveling pad. Combined with the adjustable height design of the external threaded screw and the screw hole, the leveling pad can be accurately adjusted according to actual needs to ensure the horizontal stability of the equipment on any terrain, thereby improving the accuracy and safety of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is an exploded view of the utility model;

[0018] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the overall structure of the cam of the utility model;

[0020] Figure 5 It is a side sectional view of the telescopic support mechanism of the utility model.

[0021] In the figure: 1. the main body of the pressure multiplier; 2. the telescopic supporting mechanism; 201. the fixed base; 2011. the sliding hole; 2012. the guide block; 202. the adjusting cam; 2021. the central axis; 2022. the guide part; 2023. the positioning part; 2024. the limit plate; 2025. the reinforcing rib; 2026. the finger groove; 2027. the vertical plate; 2028. the positioning groove; 203. the sliding rod; 2031. the guide groove; 2032. the screw hole; 204. the spring; 205. the leveling foot pad; 2051. the external threaded screw. DETAILED DESCRIPTION

[0022] See also Figure 1-Figure 5 , a DC high voltage generator for electrical testing, comprising a voltage multiplier body 1, a telescopic support mechanism 2 being provided at the bottom of the voltage multiplier body 1;

[0023] The telescopic support mechanism 2 includes a fixed base 201, an adjusting cam 202, a sliding rod 203, a spring 204 and a leveling foot pad 205. The fixed base 201 is fixedly installed at the bottom of the multiplier cylinder body 1. The side end surface of the fixed base 201 is provided with a sliding hole 2011. The sliding rod 203 is installed in the sliding hole 2011 and is elastically slidably connected to the fixed base 201 through a spring 204. The adjusting cam 202 is installed at the center of the fixed base 201 and is rotatably connected thereto. The sliding rod 203 is slidably contacted with the adjusting cam 202, and the leveling foot pad 205 is movably installed on the lower end surface of the sliding rod 203.

[0024] Furthermore, the adjusting cam 202 includes a central axis 2021 , a guide portion 2022 and a positioning portion 2023 . The guide portion 2022 is an arc-shaped structure, and a side end surface of the positioning portion 2023 is provided with a positioning groove 2028 corresponding to the slide rod 203 .

[0025] When the adjusting cam 202 is rotated along the central axis 2021, multiple groups of slide rods 203 are synchronously extended outward under the guidance of the guide part 2022. When reaching the positioning groove 2028, the slide rod 203 is stuck in the positioning groove 2028 under the action of the spring 204, so that the slide rod 203 remains in the extended state, so that it maintains stable support.

[0026] Furthermore, a limiting plate 2024 is provided at the end of the positioning portion 2023 , and a reinforcing rib 2025 is provided at the bottom of the guiding portion 2022 .

[0027] The rotation angle of the cam 202 is limited by the limit plate 2024 to avoid excessive force, which may cause the slide rod 203 to slip out of the positioning groove 2028, thereby improving the convenience of twisting.

[0028] Furthermore, a finger groove 2026 is provided on the lower end surface of the central axis 2021 , and a vertical plate 2027 is provided in the finger groove 2026 .

[0029] The finger groove 2026 cooperates with the vertical plate 2027 to facilitate the knob to rotate the adjustment cam 202, thereby improving the convenience of operation.

[0030] Furthermore, a guide groove 2031 is provided on the surface of the sliding rod 203 , and a guide block 2012 corresponding to the guide groove 2031 is provided in the sliding hole 2011 .

[0031] The sliding stability of the slide rod 203 is improved, and the slide rod 203 is prevented from rotating or swinging when sliding, which causes the leveling pad 205 to be skewed, thereby improving the support stability of the telescopic support mechanism 2.

[0032] Furthermore, an external threaded screw 2051 is provided on the top of the leveling pad 205 , and a screw hole 2032 is provided on the bottom of the slide rod 203 . The leveling pad 205 is threadedly connected to the slide rod 203 through the external threaded screw 2051 and the screw hole 2032 .

[0033] The threaded structure of the leveling pad 205 allows the height of the nails of the leveling pad 205 to be adjusted to adapt to different uneven ground surfaces, and facilitates replacement of the leveling pad 205 after it is worn.

[0034] Furthermore, the top of the sliding rod 203 is a spherical top structure.

[0035] The ball top structure allows it to slide more smoothly along the guide portion 2022, and after being inserted into the slide groove, the slide rod 203 can be slid out of the positioning groove 2028 by turning the knob center axis 2021, so that it is convenient to store and install.

[0036] When using the device, select a suitable test site and clear surrounding obstacles that may affect safety. First, rotate the cam clockwise to extend the slide rod 203, and easily operate it through the finger groove 2026 and the vertical plate 2027 to slide the slide rod 203 along the guide part 2022 until the slide rod 203 is stuck in the positioning groove 2028. At this time, the slide rod 203 extends outward, expanding the support area of ​​the leveling legs. Place the equipment on the ground and level it by rotating the leveling legs. According to the test requirements, correctly connect the high-voltage output terminal with the voltage multiplier cylinder body 1 and the ground wire. After the experiment is completed, ground it for discharge. After the discharge is completed, remove the voltage multiplier cylinder and rotate the cam counterclockwise to retract the slide rod 203 into the fixed base 201, thereby reducing the occupied space and facilitating inspection and storage.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A DC high voltage generator for electrical testing, comprising a voltage multiplier body (1), characterized in that: A telescopic support mechanism (2) is provided at the bottom of the pressure multiplier cylinder body (1); The telescopic support mechanism (2) comprises a fixed base (201), an adjusting cam (202), a sliding rod (203), a spring (204) and a leveling pad (205); the fixed base (201) is fixedly mounted on the bottom of the multiplier barrel body (1); a sliding hole (2011) is provided on the side end surface of the fixed base (201); the sliding rod (203) is mounted in the sliding hole (2011) and is elastically slidably connected to the fixed base (201) via a spring (204); the adjusting cam (202) is mounted at the center of the fixed base (201) and is rotatably connected thereto; the sliding rod (203) is slidably contacted with the adjusting cam (202); and the leveling pad (205) is movably mounted on the lower end surface of the sliding rod (203).

2. A DC high voltage generator for electrical testing as claimed in claim 1, characterized in that: The adjusting cam (202) comprises a central axis (2021), a guide portion (2022) and a positioning portion (2023); the guide portion (2022) is an arc-shaped structure; and a side end surface of the positioning portion (2023) is provided with a positioning groove (2028) corresponding to the sliding rod (203).

3. A DC high voltage generator for electrical testing as claimed in claim 2, characterized in that: A limiting plate (2024) is provided at the end of the positioning portion (2023), and a reinforcing rib (2025) is provided at the bottom of the guiding portion (2022).

4. A DC high voltage generator for electrical testing as claimed in claim 2, characterized in that: A finger groove (2026) is provided on the lower end surface of the central axis (2021), and a vertical plate (2027) is provided in the finger groove (2026).

5. A DC high voltage generator for electrical testing as claimed in claim 1, characterized in that: A guide groove (2031) is provided on the surface of the sliding rod (203), and a guide block (2012) corresponding to the guide groove (2031) is provided in the sliding hole (2011).

6. A DC high voltage generator for electrical testing as claimed in claim 1, characterized in that: The top of the leveling foot pad (205) is provided with an external threaded screw rod (2051), and the bottom of the sliding rod (203) is provided with a screw hole (2032). The leveling foot pad (205) is screw-connected with the sliding rod (203) through the external threaded screw rod (2051) and the screw hole (2032).

7. A DC high voltage generator for electrical testing as claimed in claim 1, characterized in that: The top of the sliding rod (203) is a spherical top structure.

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