Insulating sleeve pressure test tool

Abstract

This utility model discloses a withstand voltage testing fixture for insulating bushings, comprising a frame, a support plate fitted to the frame, and multiple high-voltage discharge components. The support plate has multiple support holes and is made of conductive material. Each high-voltage discharge component is correspondingly arranged with respect to each support hole on the support plate. Each high-voltage discharge component includes a discharge base and at least one discharge column connected to the discharge base. Both the discharge base and the discharge column are made of conductive material. The discharge base is connected to the support plate via an insulating component and is located below the support plate. Adjacent discharge bases are movably connected via a conductive switch. Each discharge column of each high-voltage discharge component passes through a support hole corresponding to that component. This utility model can quickly perform withstand voltage tests on multiple insulating bushings and can screen out unqualified insulating bushings.

Description

Technical Field

[0001] This utility model relates to the field of insulating sleeves, and in particular to a pressure testing fixture for insulating sleeves. Background Technology

[0002] The AC withstand voltage test of insulating bushings is the most direct and effective method for assessing their insulation strength, and it is absolutely crucial in determining whether insulating bushings can be put into operation. However, while the current fixtures used for withstand voltage testing of insulating bushings can perform tests on multiple bushings simultaneously, they cannot identify defective bushings when some are found to be substandard. Each bushing must be removed and tested individually, which is inconvenient.

[0003] In view of the above problems, it is necessary to study a pressure test fixture for insulating bushings that can quickly perform pressure tests on multiple insulating bushings and screen out unqualified insulating bushings. Utility Model Content

[0004] The purpose of this utility model is to provide a pressure resistance test fixture for insulating bushings, which can quickly perform pressure resistance tests on multiple insulating bushings and screen out unqualified insulating bushings.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] An insulating bushing withstand voltage test fixture includes a frame, a support plate fitted to the frame, and multiple high-voltage discharge components. The support plate has multiple support holes and is made of conductive material. Each high-voltage discharge component is correspondingly arranged with respect to each support hole on the support plate. Each high-voltage discharge component includes a discharge base and at least one discharge post connected to the discharge base. Both the discharge base and the discharge post are made of conductive material. The discharge base is connected to the support plate through an insulating component and is located below the support plate. Adjacent discharge bases are movably connected through a conductive switch. Each discharge post of each high-voltage discharge component passes through the support hole corresponding to that high-voltage discharge component.

[0007] The discharge base is provided with a conductive connector; the first end of the conductive switch for connecting two adjacent discharge bases is hinged to the conductive connector of one of the two adjacent discharge bases and electrically connected, and the second end of the conductive switch for connecting two adjacent discharge bases is movably abutted against the conductive connector of the other of the two adjacent discharge bases.

[0008] The conductive connector is provided with a conductive groove for the conductive switch to engage.

[0009] The two ends of the discharge base are connected to the support plate through insulating components.

[0010] The discharge column is fitted with a discharge plate, which is made of a conductive material.

[0011] The support plate is fitted with at least one pressure plate for each support hole, with the pressure plate located above the support plate and to the side of the support hole.

[0012] The pressure plate is connected to the support plate by connecting bolts. After the connecting bolts pass through the pressure plate, they are locked to the support plate. The support plate has through holes for the connecting bolts to pass through, and the through holes of the pressure plate are elongated holes.

[0013] The pressure plate is screwed with an adjusting bolt, the bottom end of which abuts against the upper surface of the support plate.

[0014] The bottom of the frame is fitted with multiple pulleys.

[0015] The frame is equipped with handles.

[0016] After adopting the above scheme, when using the insulating sleeve withstand voltage test fixture of this utility model, the multiple insulating sleeves to be tested are respectively installed into the support holes of the support plate, so that the insulating sleeves abut against the support plate and the discharge columns of each high-voltage discharge component are respectively inserted into the openings of each insulating sleeve. The support plate is grounded and one discharge seat is connected to the high-voltage test power supply (the discharge seat connected to the high-voltage test power supply is defined as the main discharge seat, and the other discharge seats are secondary discharge seats). Then, the withstand voltage test is performed. The specific steps for performing the withstand voltage test are as follows:

[0017] Step 1: First, close all conductive switches to make the discharge bases electrically connected to each other, thus connecting each high-voltage discharge component to the high-voltage test power supply. Then, the high-voltage test power supply outputs high voltage, causing each discharge column of each high-voltage discharge component connected to the high-voltage test power supply to discharge, thereby performing a withstand voltage test on multiple insulating bushings at once. Next, check if there is current in the support plate. If no current is detected in the support plate, the withstand voltage of each insulating bushing is qualified, and the test ends. If current is detected in the support plate, the withstand voltage of some insulating bushings is unqualified, and proceed to Step 2.

[0018] Step Two: First, disconnect a closed conductive switch to disconnect one secondary discharge base from the main discharge base, while keeping the other closed conductive switches connected to the main discharge base. Then, the high-voltage test power supply outputs high voltage to discharge each discharge column of the high-voltage discharge assembly connected to the high-voltage test power supply for a withstand voltage test. Next, check if there is current in the support plate. If there is no current in the support plate, the insulating sleeve corresponding to the secondary discharge base that was disconnected from the main discharge base in this step is unqualified, while the remaining insulating sleeves are qualified, and the test ends. If there is no current in the support plate, the insulating sleeve corresponding to the secondary discharge base that was disconnected from the main discharge base in this step is qualified, while the remaining insulating sleeves are unqualified, and proceed to Step Three.

[0019] Step 3: Repeat step 2 to disconnect the electrical conduction between each of the remaining secondary discharge seats and the main discharge seat, and perform a withstand voltage test to determine whether the insulating sleeves corresponding to the remaining secondary discharge seats and the main discharge seat are qualified.

[0020] As can be seen from the above, the insulating sleeve withstand voltage test fixture of this utility model can perform withstand voltage tests on multiple insulating sleeves at one time, with high efficiency; and when there are unqualified insulating sleeves, this utility model can screen out unqualified insulating sleeves by successively disconnecting the conductive switch and repeating the withstand voltage test, without removing the insulating sleeves, which is more convenient. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0022] Figure 2 for Figure 1 Enlarged view of point a.

[0023] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0024] Figure 4 This is a schematic diagram illustrating the use of this utility model.

[0025] Label Explanation:

[0026] Frame 1, casters 11, handles 12

[0027] Support plate 2, support hole 21

[0028] High-voltage discharge assembly 3, discharge base 31, conductive connector 311, conductive groove 3111, discharge column 32, discharge plate 33.

[0029] Insulating component 4,

[0030] Conductive switch 5,

[0031] Pressure plate 6, through hole 61,

[0032] Connecting bolt 7,

[0033] Adjusting bolt 8,

[0034] Insulating sleeve A. Detailed Implementation

[0035] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0036] like Figures 1 to 4 As shown, this utility model discloses a pressure withstand test fixture for insulating sleeves, which includes a frame 1, a support plate 2 and multiple high-voltage discharge components 3 that cooperate with the frame 1; wherein, the support plate 2 is provided with multiple support holes 21, and the support plate 2 is made of conductive material; each high-voltage discharge component 3 is respectively arranged corresponding to each support hole 21 of the support plate 2, and each high-voltage discharge component 3 includes a discharge seat 31 and at least one discharge column 32 connected to the discharge seat 31. Both the discharge seat 31 and the discharge column 32 are made of conductive material. The discharge seat 31 is connected to the support plate 2 through an insulating member 4 and is located below the support plate 2. Two adjacent discharge seats 31 are movably connected through a conductive switch 5; each discharge column 32 of each high-voltage discharge component 3 passes through the support hole 21 corresponding to that high-voltage discharge component 3.

[0037] Cooperate Figure 4 As shown, when using the insulating sleeve withstand voltage test fixture of this utility model, multiple insulating sleeves A to be tested are respectively installed into the support holes 21 of the support plate 2, so that the insulating sleeves A abut against the support plate 2 and the discharge columns 32 of each high-voltage discharge component 3 are respectively inserted into the openings of each insulating sleeve A. The support plate 2 is grounded and one discharge seat 31 is connected to the high-voltage test power supply (the discharge seat 31 connected to the high-voltage test power supply is defined as the main discharge seat, and the other discharge seats 31 are secondary discharge seats). Then, the withstand voltage test is performed. The specific steps for performing the withstand voltage test are as follows:

[0038] Step 1: First, close all conductive switches 5 to make the discharge bases 31 electrically connected to each other, so that each high-voltage discharge component 3 is electrically connected to the high-voltage test power supply (not shown); then, the high-voltage test power supply outputs high voltage, causing each discharge column 32 of each high-voltage discharge component 3 electrically connected to the high-voltage test power supply to discharge, thereby performing a withstand voltage test on multiple insulating bushings A at once; next, check whether there is current in the support plate 2; if no current is detected in the support plate 2, then the withstand voltage of each insulating bushing A is qualified, and the test ends; if current is detected in the support plate 2, then the withstand voltage of the insulating bushing A is unqualified, and proceed to Step 2.

[0039] Step Two: First, disconnect one closed conductive switch 5 to disconnect one secondary discharge base from the main discharge base, while keeping the other closed conductive switches 5 connected to the main discharge base. Then, the high-voltage test power supply outputs high voltage to discharge each discharge column 32 of the high-voltage discharge assembly 3 connected to the high-voltage test power supply for a withstand voltage test. Next, check if there is current in the support plate 2. If there is no current in the support plate 2, the insulating sleeve A corresponding to the secondary discharge base that was disconnected from the main discharge base in this step is unqualified, while the other insulating sleeves A are qualified, and the test ends. If there is no current in the support plate 2, the insulating sleeve A corresponding to the secondary discharge base that was disconnected from the main discharge base in this step is qualified, while the other insulating sleeves A are unqualified, and proceed to Step Three.

[0040] Step 3: Repeat step 2 to disconnect the electrical conduction between each of the remaining secondary discharge seats and the main discharge seat and perform a withstand voltage test to determine whether the insulating sleeve A corresponding to each of the remaining secondary discharge seats and the main discharge seat is qualified.

[0041] As described above, the insulating sleeve withstand voltage testing fixture of this invention can perform withstand voltage tests on multiple insulating sleeves A at once, achieving high efficiency. Furthermore, if any insulating sleeve A is found to be defective, the fixture can screen out the defective insulating sleeve A by successively disconnecting the conductive switch 5 and repeating the withstand voltage test, without removing the insulating sleeve A, making it more convenient. When operating the conductive switch 5, it is necessary to ensure that the high-voltage test power supply does not output voltage to guarantee safety.

[0042] In an embodiment of this utility model, the discharge base 31 may be provided with a conductive connector 311; the first end of the conductive switch 5 used to connect two adjacent discharge bases 31 is hinged to the conductive connector 311 of one of the two adjacent discharge bases 31 and electrically connected; the second end of the conductive switch 5 used to connect two adjacent discharge bases 31 is movably abutted against the conductive connector 311 of the other of the two adjacent discharge bases 31; the conductive connector 311 may be provided with a conductive groove 3111 for the conductive switch 5 to fit into, so that the conductive switch 5 can stably abut against the conductive connector 311. Specifically, when the second end of the conductive switch 5 used to connect two adjacent discharge bases 31 abuts against the conductive connector 311 of the other discharge base 31, the conductive switch 5 is in a closed state, making the two adjacent discharge bases 31 electrically connected; and when the second end of the conductive switch 5 used to connect two adjacent discharge bases 31 does not abut against the conductive connector 311 of the other discharge base 31, the conductive switch 5 is in an open state, making the two adjacent discharge bases 31 not electrically connected.

[0043] In an embodiment of this utility model, the two ends of the discharge base 31 can be connected to the support plate 2 through the insulating member 4, so that the discharge base 31 can be stably connected to the support plate 2, and the insulating member 4 can prevent the discharge base 31 from being electrically connected to the support plate 2.

[0044] In an embodiment of this utility model, the discharge column 32 may be equipped with a discharge plate 33. The discharge plate 33 is made of conductive material and is used to contact the inner wall of the opening of the insulating sleeve A so that the high voltage discharge assembly 3 can better discharge the insulating sleeve A. The discharge plate 33 may be a circular plate structure.

[0045] In an embodiment of this utility model, the support plate 2 is fitted with at least one pressure plate 6 corresponding to each support hole 21. The pressure plate 6 is located above the support plate 2 and to the side of the support hole 21. The pressure plate 6 is used to press down the periphery of the insulating sleeve A so that the insulating sleeve A is stably fitted to the support plate 2.

[0046] In an embodiment of this utility model, the pressure plate 6 is connected to the support plate 2 by a connecting bolt 7. After the connecting bolt 7 passes through the pressure plate 6, it is locked to the support plate 2. The support plate 2 is provided with a through hole 61 for the connecting bolt 7 to pass through. The through hole 61 can be an elongated hole so that the position of the pressure plate 6 can be adjusted, thereby allowing the pressure plate 6 to be adapted to insulating sleeves A of different sizes.

[0047] In an embodiment of this utility model, the pressure plate 6 may be screwed with an adjusting bolt 8. The bottom end of the adjusting bolt 8 abuts against the upper surface of the support plate 2. The adjusting bolt 8 is used to adjust the tilt angle of the pressure plate 6 to ensure that the pressure plate 6 can stably press against the periphery of the insulating sleeve A.

[0048] In an embodiment of this utility model, the bottom of the frame 1 is equipped with multiple pulleys 11 to facilitate the movement of the frame 1, thereby facilitating the movement of the insulating sleeve withstand voltage test fixture; the frame 1 may be provided with handles 12 so that the user can apply force to pull the frame 1.

[0049] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. An insulation sleeve pressure test tool, characterized by: The rack, the support plate and the plurality of high-voltage discharge assemblies are matched with the rack; The support plate is provided with a plurality of support holes and is made of conductive material; Each high-voltage discharge assembly is arranged corresponding to each support hole of the support plate, and the high-voltage discharge assembly comprises a discharge seat and at least one discharge column connected with the discharge seat. The discharge seat and the discharge column are both made of conductive material. The discharge seat is connected with the support plate through an insulating piece and is located below the support plate. Adjacent two discharge seats are connected through a conductive switch. Each discharge column of each high-voltage discharge assembly passes through the corresponding support hole.

2. The insulation sleeve pressure test fixture of claim 1, wherein: The discharge seat is provided with a conductive connecting piece. The first end of the conductive switch for connecting adjacent two discharge seats is hinged and electrically connected with the conductive connecting piece of one of the adjacent two discharge seats, and the second end of the conductive switch is abutted with the conductive connecting piece of the other of the adjacent two discharge seats.

3. The insulation sleeve pressure test fixture of claim 2, wherein: The conductive connecting piece is provided with a conductive slot for embedding the conductive switch.

4. The insulation sleeve pressure test fixture of claim 1, wherein: The two ends of the discharge seat are connected with the support plate through insulating pieces.

5. The insulation sleeve pressure test fixture of claim 1, wherein: The discharge column is matched with a discharge plate made of conductive material.

6. The insulation sleeve pressure test fixture of claim 1, wherein: The support plate is matched with at least one pressing plate corresponding to each support hole. The pressing plate is located above the support plate and is located on the side of the support hole.

7. The insulation sleeve pressure test fixture of claim 6, wherein: The pressing plate is connected with the support plate through a connecting bolt. The connecting bolt is locked with the support plate after passing through the pressing plate. The support plate is provided with a through hole for the connecting bolt to pass through. The through hole of the pressing plate is a long hole.

8. The insulation sleeve pressure test fixture of claim 6, wherein: The pressing plate is screwed with an adjusting bolt. The bottom end of the adjusting bolt abuts against the upper surface of the support plate.

9. The insulation sleeve pressure test fixture of claim 1, wherein: The rack is matched with a plurality of pulleys at the bottom.

10. The insulation sleeve pressure test fixture of claim 9, wherein: The rack is provided with a handle.

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