A tooling system for withstand voltage partial discharge testing of a full range of insulation components of combined electrical appliances

Abstract

The utility model relates to the technical field of combined electrical appliances, specifically a tooling system for withstand voltage partial discharge testing of a full range of insulating parts of combined electrical appliances. It includes a high-voltage module, a first withstand voltage partial discharge module, and a second withstand voltage partial discharge module. The high-voltage module is provided with a number of interfaces, which are respectively connected to the first withstand voltage partial discharge module and the second withstand voltage partial discharge module. Compared with the prior art, it has the following beneficial effects: 1. The module has strong versatility, and one module can realize withstand voltage partial discharge testing of a variety of insulating parts. It has a standardized design and is suitable for mass production; 2. The structure is exquisite and compact, and can realize withstand voltage partial discharge testing of a variety of insulating parts in a limited space; 3. The production capacity is large, and a set of equipment can realize a large number of insulating parts tests at one time.

Description

Technical Field

[0001] The utility model relates to the technical field of combined electrical appliances, in particular to a pressure withstand partial discharge test tooling system for a full range of insulating parts of combined electrical appliances. Background Art

[0002] GIS is one of the most important power transmission and transformation equipment in the power system. Its reliable and efficient operation plays a vital role in the safety of the power grid. For the insulating parts of the GIS, including pot insulators, support insulators, insulating rods, etc., it is necessary to carry out withstand voltage and partial discharge tests before assembly. At present, the GIS manufacturers basically use the factory withstand voltage and partial discharge test reports provided by the supplier to determine whether the partial discharge withstand voltage of the insulating parts is qualified. In this way, the GIS manufacturers themselves cannot control the insulation performance of the parts, which also brings hidden dangers to the insulation performance of future finished products, and the product quality cannot be guaranteed. Summary of the invention

[0003] The utility model provides a withstand voltage partial discharge test tooling system for a full range of insulation parts of combined electrical appliances in order to overcome the deficiencies of the prior art.

[0004] To achieve the above objectives, a withstand voltage partial discharge test tooling system for a full range of insulating components of combination electrical appliances is designed, including a high voltage module, a first withstand voltage partial discharge module, and a second withstand voltage partial discharge module. The high voltage module is provided with a plurality of interfaces, which are respectively connected to the first withstand voltage partial discharge module and the second withstand voltage partial discharge module.

[0005] The high-voltage module includes a high-voltage shell, a moving-end conductor, an intermediate conductor, a self-shielding seat, and a grounding contact seat. The moving-end conductor is arranged in the high-voltage shell, and the moving-end conductor is connected to the intermediate conductor through a gear transmission structure. A self-shielding seat is arranged at one end of the intermediate conductor, and a grounding contact seat is arranged at the other end of the intermediate conductor.

[0006] The first voltage-resistant partial discharge module includes a first voltage-resistant chamber, a first pot-type insulator, a connecting conductor, and a test frame. One end of the high-voltage module is connected to one end of the first pot-type insulator through a first shielding cover, the other end of the first pot-type insulator is connected to one end of the connecting conductor, and the other end of the connecting conductor passes through the first voltage-resistant chamber. A test frame is provided in the first voltage-resistant chamber, one end of the second pot-type insulator is fixed on the test frame, and a transfer trolley is provided outside the first voltage-resistant chamber.

[0007] The other end of the connecting conductor is connected to one end of the second pot-type insulator, and the other end of the second pot-type insulator is connected to the shielding seat through the second shielding cover. One end of the shielding seat is provided with a grounding cover, and one end of the grounding cover is fixed to the test frame by bolts.

[0008] The position of the grounding cover matches the position of the test frame, and the grounding cover and the test frame respectively fix the left and right ends of the circuit breaker insulation pull rod test piece.

[0009] The other end of the connecting conductor is connected to a plurality of pot-type insulator samples connected in series, the pot-type insulator samples are fixed on the test frame, the outermost pot-type insulator sample is connected to the grounding cover, one end of the grounding cover is fixed to the test frame by bolts.

[0010] The second voltage-resistant partial discharge module includes a second voltage-resistant chamber, a third pot-type insulator, and a third shielding cover. One end of the high-voltage module is connected to one end of the third shielding cover through the third pot-type insulator, the other end of the third shielding cover is connected to one end of the voltage-resistant shielding seat, the other end of the voltage-resistant shielding seat is connected to one end of the grounding shielding cover, the other end of the grounding shielding cover is sleeved with one end of a spring, and the other end of the spring is sleeved on the cover plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The module has strong versatility. One module can realize the withstand voltage partial discharge test of various insulating parts. The standardized design is suitable for mass production.

[0013] 2. The structure is exquisite and compact, and can complete the withstand voltage partial discharge test of various types of insulating parts in a limited space;

[0014] 3. Large production capacity, one set of equipment can test a large number of insulation parts at one time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a cross-sectional view of the utility model.

[0017] Figure 3 It is a side view of the utility model.

[0018] Figure 4 It is a top view of the utility model.

[0019] Figure 5 It is a schematic diagram of a first withstand voltage partial discharge module when the insulating pull rod of the circuit breaker of the utility model is subjected to a withstand voltage partial discharge test.

[0020] Figure 6 It is a schematic diagram of the first withstand voltage partial discharge module when the pot-type insulator of the utility model is subjected to a withstand voltage partial discharge test.

[0021] Figure 7 It is a schematic diagram of a second withstand voltage partial discharge module when the insulating pull rod of the disconnector of the utility model is subjected to a withstand voltage partial discharge test.

[0022] Figure 8 It is a schematic diagram of a second withstand voltage partial discharge module when the support insulator of the utility model is subjected to a withstand voltage partial discharge test.

[0023] Fig. 9 It is a structural schematic diagram of the high voltage module of the utility model. DETAILED DESCRIPTION

[0024] The utility model is further described below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, the withstand voltage partial discharge test fixture system for the full range of insulating components of the combination electrical appliance in this embodiment includes a high voltage module 3, a first withstand voltage partial discharge module 1, and a second withstand voltage partial discharge module 2. The high voltage module 3 is provided with a plurality of interfaces, which are respectively connected to the first withstand voltage partial discharge module 1 and the second withstand voltage partial discharge module 2.

[0026] like Fig. 9 As shown, the high-voltage module 3 includes a high-voltage housing 3-1, a moving-end conductor 3-2, an intermediate conductor 3-3, a self-shielding seat 3-5, and a grounding contact seat 3-4. The moving-end conductor 3-2 is arranged in the high-voltage housing 3-1, and the moving-end conductor 3-2 is connected to the intermediate conductor 3-3 through a gear transmission structure. One end of the intermediate conductor 3-3 is provided with a self-shielding seat 3-5, and the other end of the intermediate conductor 3-3 is provided with a grounding contact seat 3-4. The method of the high-voltage module 3 is as follows: the transmission gear of the moving-end conductor 3-2 is connected with the intermediate conductor 3-3 through a rack, driving the intermediate conductor 3-3 to move in a direction close to or away from the grounding contact seat 3-4. When the intermediate conductor 3-3 is pulled out from the grounding contact seat 3-4 with a spring contact and inserted into the self-shielding seat 3-5, the high-voltage module 3 is connected with the high-voltage generating device; when the intermediate conductor 3-3 is separated from the self-shielding seat 3-5 and inserted into the grounding contact seat 3-4, the isolation and grounding of the high-voltage module 3 and the high-voltage generating device are realized.

[0027] During specific use, the high-voltage module 3 is externally connected to a high-voltage generating device, which effectively connects and isolates the high-voltage generator from the first withstand voltage partial discharge module and the second withstand voltage partial discharge module, and performs withstand voltage partial discharge tests on the insulating components assembled in the first withstand voltage partial discharge module and the second withstand voltage partial discharge module.

[0028] like Figure 2 , Figure 5 , Figure 6As shown, the first withstand voltage partial discharge module 1 includes a first withstand voltage chamber 1-2, a first pot-type insulator 1-11, a connecting conductor 1-9, and a test frame 1-8. One end of the high voltage module 3 is connected to one end of the first pot-type insulator 1-11 through a first shielding cover 1-10, and the other end of the first pot-type insulator 1-11 is connected to one end of the connecting conductor 1-9. The other end of the connecting conductor 1-9 passes through the first withstand voltage chamber 1-2. A test frame 1-8 is provided in the first withstand voltage chamber 1-2, and one end of the second pot-type insulator 1-7 is fixed on the test frame 1-8. A transfer trolley 1-1 is provided outside the first withstand voltage chamber 1-2. The first withstand voltage partial discharge module 1 is used to perform withstand voltage partial discharge tests on insulating pull rods or pot-type insulators of circuit breakers.

[0029] like Figure 5 As shown, when the circuit breaker insulation rod test piece 1-4 needs to be subjected to a withstand voltage partial discharge test, the other end of the connecting conductor 1-9 is connected to one end of the second pot-type insulator 1-7, and the other end of the second pot-type insulator 1-7 is connected to the shielding seat 1-5 through the second shielding cover 1-6. One end of the shielding seat 1-5 is provided with a grounding cover 1-3, and one end of the grounding cover 1-3 is fixed to the test frame 1-8 by bolts. The position of the grounding cover 1-3 matches the position of the test frame 1-8, and the grounding cover 1-3 and the test frame 1-8 respectively fix the left and right ends of the circuit breaker insulation rod test piece 1-4.

[0030] The specific method for conducting a withstand voltage test on the insulating pull rod of a circuit breaker is as follows:

[0031] S1-1, install the insulating rod of the circuit breaker to be tested: fasten the second pot-type insulator 1-7 to the test frame 1-8 by bolts, connect the connecting conductor 1-9 to one end of the second pot-type insulator 1-7, fasten the second shielding cover 1-6 to the other end of the second pot-type insulator 1-7 by bolts, plug the shielding seat 1-5 and the second shielding cover 1-6 through spring contacts, plug one side of the circuit breaker insulating rod test piece 1-4 to the shielding seat 1-5 through spring contacts, connect the other end of the circuit breaker insulating rod test piece 1-4 to the grounding cover 1-3, fasten the grounding cover 1-3 to the test frame 1-8 by bolts, and press the circuit breaker insulating rod test piece 1-4 tightly;

[0032] S1-2, push the assembled circuit breaker insulating rod test piece 1-4 into the first pressure-resistant chamber 1-2 through the transfer trolley 1-1, insert the connecting conductor 1-9 into the first shielding cover 1-10 with spring contacts, and make the first pressure-resistant partial discharge module 1 electrically connected with the high-voltage module 3;

[0033] S1-3, seal the cover of the first pressure-resistant chamber 1-2, fill the first pressure-resistant chamber 1-2 with insulating gas, and perform a pressure-resistant partial discharge test on the circuit breaker insulating pull rod test piece 1-4.

[0034] In specific use, by selecting different types of grounding covers and shielding seats, the withstand voltage partial discharge test can be performed on different types of circuit breaker insulation pull rod test pieces 4.

[0035] In specific use, after the test piece is assembled in the assembly warehouse, it can be pushed into the pressure-resistant warehouse by a transfer cart, and then the pressure-resistant partial discharge test can be carried out.

[0036] like Figure 6 As shown, when it is necessary to perform a withstand voltage partial discharge test on the pot-type insulator specimen 1-12, the other end of the connecting conductor 1-9 is connected to a plurality of pot-type insulator specimens 1-12 connected in series, the pot-type insulator specimens 1-12 are fixed on the test frame 1-8, and the outermost pot-type insulator specimen 1-12 is connected to the grounding cover 1-3, and one end of the grounding cover 1-3 is fixed to the test frame 1-8 by bolts.

[0037] The specific method for conducting a withstand voltage test on a pot-type insulator is as follows:

[0038] S2-1, install the pot-type insulator to be tested: connect several pot-type insulator samples 1-12 in series through the conductive insert in the middle of the pot-type insulator sample 12 to ensure electrical connectivity;

[0039] S2-2, fasten the pot-type insulator sample 1-12 connected in series with the test frame 1-8 and the grounding cover 1-3 by bolts, then connect one end of the connecting conductor 1-9 to the pot-type insulator sample 1-12, and insert the other end of the connecting conductor 1-9 into the first shielding cover 1-10 with a spring contact, so that the first withstand voltage partial discharge module 1 is electrically connected with the high voltage module 3;

[0040] S2-3, one side of the pot-type insulator specimen 12 is connected to the high voltage end, and the other side of the pot-type insulator specimen 12 is grounded, and a withstand voltage partial discharge test is performed.

[0041] like Figure 2 , Figure 7 , Figure 8 As shown, the second voltage-resistant partial discharge module 2 includes a second voltage-resistant chamber 2-1, a third pot-type insulator 2-7, and a third shielding cover 2-6. One end of the high-voltage module 3 is connected to one end of the third shielding cover 2-6 through the third pot-type insulator 2-7. The other end of the third shielding cover 2-6 is connected to one end of a voltage-resistant shielding seat 2-5. The other end of the voltage-resistant shielding seat 2-5 is connected to one end of a grounding shielding cover 2-3. The other end of the grounding shielding cover 2-3 is sleeved with one end of a spring 2-2. The other end of the spring 2-2 is sleeved on the cover plate 2-8.

[0042] The second withstand voltage partial discharge module 2 is used for the withstand voltage test of the isolating switch insulating rod specimen 2-4 or the supporting insulator specimen 2-9. The specific method is as follows:

[0043] S3-1, install the isolating switch insulating rod test piece 2-4 or the supporting insulator test piece 2-9: fasten the third shielding cover 2-6 and the third pot-type insulator 2-7 with bolts, then insert the withstand voltage shielding seat 2-5 into the third shielding cover 2-6 with spring contacts, insert the isolating switch insulating rod test piece 2-4 or the supporting insulator test piece 2-9 into the withstand voltage shielding seat 2-5 with spring contacts, insert the other side of the withstand voltage shielding seat 2-5 into the grounding shielding cover 2-3, and use the spring 2-2 to press the grounding shielding cover 2-3 and the isolating switch insulating rod test piece or the supporting insulator test piece 2-9 tightly to ensure electrical connectivity;

[0044] S3-2, tighten and seal the cover plate 2-8 and the second pressure-resistant chamber 2-1, and compress the spring 2-2;

[0045] S3-3, filling the second pressure-resistant chamber 2-1 with insulating gas and performing a pressure-resistant partial discharge test.

[0046] In specific use, by selecting different types of grounding shielding covers and withstand voltage shielding seats, withstand voltage partial discharge tests can be performed on different types of disconnector insulation rod specimens and supporting insulator specimens.

[0047] During specific use, the shielding cover, shielding lid and contact seat in the utility model are purchased with spring contacts.

[0048] In the utility model, the withstand voltage partial discharge test of several pot-type insulators or several insulating rods of circuit breakers can be realized through the first withstand voltage partial discharge module. One module can be used for withstand voltage partial discharge test of pot-type insulators and withstand voltage partial discharge test of insulating rods of circuit breakers. And withstand voltage partial discharge test can be carried out on pot-type insulators and insulating rods of circuit breakers of different models. When the first withstand voltage partial discharge module is used, one end of the test piece is electrically connected to the high-voltage module through the shielding seat in the form of a spring contact connection to achieve pressurization. The other end of the test piece is electrically connected to the housing of the first withstand voltage partial discharge module through the grounding cover and the bolt clamping method to achieve grounding.

[0049] In the utility model, the withstand voltage partial discharge test of several supporting insulators or several insulating rods of isolating switches can be realized through the second withstand voltage partial discharge module. One module can be used for the withstand voltage partial discharge test of supporting insulators and the withstand voltage partial discharge test of insulating rods of isolating switches. And the withstand voltage partial discharge test can be carried out on different types of supporting insulators and insulating rods of isolating switches. During specific use, one end of the test piece is electrically connected to the high-voltage input and isolation device module through a shielding seat in a spring contact connection mode to achieve pressurization. The other end of the test piece is electrically connected to the second withstand voltage partial discharge module housing through a shielding grounding cover in a spring contact connection mode to achieve grounding.

[0050] The utility model can use a set of equipment to complete the withstand voltage test of the insulation parts of the combination electrical appliances, and realize the withstand voltage partial discharge test of all key insulation parts of the combination electrical appliances. It has a simple structure, diverse functions, huge production capacity, small size, simple design, and easy installation. It can meet the withstand voltage partial discharge conditions of all key insulation parts of the combination electrical appliances in a limited test space, thereby improving production capacity and improving product quality.

Claims

1. A withstand voltage partial discharge test fixture system for a full range of insulation components of combined electrical appliances, characterized by: The invention comprises a high-voltage module (3), a first withstand voltage partial discharge module (1), and a second withstand voltage partial discharge module (2); the high-voltage module (3) is provided with a plurality of interfaces, which are respectively connected to the first withstand voltage partial discharge module (1) and the second withstand voltage partial discharge module (2); the first withstand voltage partial discharge module (1) comprises a first withstand voltage compartment (1-2), a first pot-type insulator (1-11), a connecting conductor (1-9), and a test frame (1-8); one end of the high-voltage module (3) is connected to one end of the first pot-type insulator (1-11) through a first shielding cover (1-10); the other end of the first pot-type insulator (1-11) is connected to one end of the connecting conductor (1-9); the other end of the connecting conductor (1-9) passes through the first withstand voltage compartment (1-2); a test frame (1-8) is provided in the first withstand voltage compartment (1-2); one end of the second pot-type insulator (1-7) is fixed on the test frame (1-8); and a transfer trolley (1-1) is provided outside the first withstand voltage compartment (1-2).

2. According to claim 1, a pressure withstand partial discharge test tooling system for a full range of insulation components of combined electrical appliances is characterized by: The high-voltage module (3) comprises a high-voltage housing (3-1), a moving-end conductor (3-2), an intermediate conductor (3-3), a self-shielding seat (3-5), and a grounding contact seat (3-4); the moving-end conductor (3-2) is arranged in the high-voltage housing (3-1); the moving-end conductor (3-2) is connected to the intermediate conductor (3-3) via a gear transmission structure; one end of the intermediate conductor (3-3) is provided with a self-shielding seat (3-5); and the other end of the intermediate conductor (3-3) is provided with a grounding contact seat (3-4).

3. According to claim 1, a pressure withstand partial discharge test tooling system for a full range of insulation components of combined electrical appliances is characterized by: The other end of the connecting conductor (1-9) is connected to one end of a second pot-type insulator (1-7), and the other end of the second pot-type insulator (1-7) is connected to a shielding seat (1-5) via a second shielding cover (1-6). A grounding cover (1-3) is provided at one end of the shielding seat (1-5), and one end of the grounding cover (1-3) is fixed to the test frame (1-8) via bolts.

4. According to claim 3, a pressure withstand partial discharge test tooling system for a full range of insulation components of combined electrical appliances is characterized by: The position of the grounding cover (1-3) matches the position of the test frame (1-8), and the grounding cover (1-3) and the test frame (1-8) respectively fix the left and right ends of the circuit breaker insulation pull rod test piece (1-4).

5. According to claim 1, a pressure withstand partial discharge test tooling system for a full range of insulation components of combined electrical appliances is characterized by: The other end of the connecting conductor (1-9) is connected to a plurality of pot-type insulator specimens (1-12) connected in series, the pot-type insulator specimens (1-12) are fixed on a test frame (1-8), the outermost pot-type insulator specimen (1-12) is connected to a grounding cover (1-3), and one end of the grounding cover (1-3) is fixed to the test frame (1-8) by means of bolts.

6. According to claim 1, a pressure withstand partial discharge test tooling system for a full range of insulation components of combined electrical appliances is characterized by: The second withstand voltage partial discharge module (2) comprises a second withstand voltage chamber (2-1), a third pot-type insulator (2-7), and a third shielding cover (2-6); one end of the high voltage module (3) is connected to one end of the third shielding cover (2-6) via the third pot-type insulator (2-7); the other end of the third shielding cover (2-6) is connected to one end of a withstand voltage shielding seat (2-5); the other end of the withstand voltage shielding seat (2-5) is connected to one end of a grounding shielding cover (2-3); the other end of the grounding shielding cover (2-3) is sleeved with one end of a spring (2-2); the other end of the spring (2-2) is sleeved on a cover plate (2-8).

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