CN213398799U

CN213398799U - Insulation test device for GIL or GIS pipeline

Info

Publication number: CN213398799U
Application number: CN202022335889.2U
Authority: CN
Inventors: 亓云国; 张子琛; 王喻正
Original assignee: Sdee Hitachi High Voltage Switchgear Co ltd
Current assignee: Sdee Hitachi High Voltage Switchgear Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-06-08
Anticipated expiration: 2030-10-19

Abstract

The utility model discloses a GIL or GIS is insulation test device for pipeline mainly relates to the insulation test device field. Including test platform, test platform includes impact device, power frequency equipment, a plurality of adapting unit who is connected with test equipment through the wire, be equipped with two first DS switches between impact device and the power frequency equipment, every adapting unit all connects between two first DS switches through the wire, be connected with first ES earthing switch between impact device and power frequency equipment and the adjacent first DS switch respectively, adapting unit includes experimental portion's article interface, second ES earthing switch and the second DS switch that connects in order, second DS switch sets up the position that is close to first DS switch at adapting unit. The beneficial effects of the utility model reside in that: the test of power frequency withstand voltage and impact withstand voltage can be simultaneously carried out on multiple devices, multiple voltage levels and multiple products.

Description

Insulation test device for GIL or GIS pipeline

Technical Field

The utility model relates to an insulation test device field specifically is a GIL or GIS is insulation test device for pipeline.

Background

The gas insulated metal-enclosed switchgear is subjected to a withstand voltage test before leaving the factory. Because each circuit breaker, bus, expansion joint and other parts which leave factory need to carry out power frequency withstand voltage and impact withstand voltage test respectively, and because the isolation change-over switch is not assembled on each phase of the existing product withstand voltage test platform, in the test process of the same part product, after the impact test equipment is connected firstly for impact test each time, the power frequency withstand voltage equipment is installed after the impact test equipment is disassembled, and then the power frequency withstand voltage test is carried out. The repeated disassembly not only increases the workload, but also can not ensure the assembly quality, thereby greatly increasing the time required by the product test.

The traditional test platform is single in butt joint caliber, a butt joint port and test equipment of the test platform need to be changed when a multi-voltage grade product is tested simultaneously, multiple recovery of SF6 is inevitably caused by the disassembly, the purity of SF6 is influenced, and even the leakage of SF6 causes air pollution.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a GIL or GIS is insulation test device for pipeline, it can realize that multi-equipment, multivoltage level, multi-product carry out the withstand voltage of power frequency simultaneously and strike withstand voltage's experiment to solve current test platform function unicity, work efficiency low, the gaseous extravagant problem of SF 6.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

an insulation test device for a GIL or GIS pipeline comprises a test platform, wherein the test platform comprises impact equipment, power frequency equipment and a plurality of connecting parts connected with the test equipment, the impact equipment, the power frequency equipment and the connecting parts are connected through leads, two first DS switches are arranged between the impact equipment and the power frequency equipment, each connecting part is connected between the two first DS switches through leads, first ES grounding switches are respectively connected between the impact equipment and the power frequency equipment and between the impact equipment and the adjacent first DS switches,

the connecting part comprises a test part interface, a second ES grounding switch and a second DS switch which are connected in sequence, and the second DS switch is arranged at the position, close to the first DS switch, of the connecting part.

Furthermore, insulation supports are connected between the first DS switch and the impact equipment and between the first DS switch and the power frequency equipment, and insulation supports are connected between the second DS switch and the test part interface.

Furthermore, the first ES grounding switch and the second ES grounding switch respectively comprise an ES operating rod, an ES moving contact and an ES static contact, and the ES moving contact and the ES static contact are controlled to be switched on through the operating rod.

Furthermore, the first DS switch and the second DS switch both comprise a DS operating rod, a DS moving contact and a DS static contact, and the DS moving contact and the DS static contact are controlled to be switched on through the operating rod.

Furthermore, a plurality of gas pressure gauges are arranged on the test platform.

Further, the size of a plurality of the test part interfaces can be adjusted.

Contrast prior art, the beneficial effects of the utility model reside in that:

1. this patent makes gas insulated metal enclosed switchgear's part can both carry out power frequency withstand voltage test under the prerequisite of needn't not dismantling at same platform, can carry out impulse withstand voltage test again, avoids because the gaseous waste of SF6 and the experimental inefficiency that experimental facilities caused is dismantled repeatedly.

2. The DS switch and the ES grounding switch are added to the experiment platform, so that the experiment platform is more controllable, and meanwhile, the safety is improved.

3. The setting of a plurality of adapting unit and the structure of the adjustable size of test part article interface in the adapting unit have realized that many equipment, many voltage levels, many products carry out withstand voltage of power frequency and the withstand voltage test platform of impact simultaneously to solve current GIS/GIL test platform function singleness, work efficiency low, the gaseous extravagant problem of SF 6.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the ES grounding switch of the present invention.

Fig. 3 is a schematic diagram of the DS switch structure of the present invention.

Fig. 4 is a schematic circuit diagram of the present invention.

Reference numerals shown in the drawings:

1. an impact device; 2. power frequency equipment; 3. a first DS switch; 4. a first ES ground switch; 5. a test part interface; 6. a second ES ground switch; 7. a second DS switch; 8. insulating support; 9. an ES operating lever; 10. an ES moving contact; 11. an ES static contact; 12. a DS lever; 13. a DS moving contact; 14. DS static contact; 15. and a gas pressure gauge.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

The utility model relates to a GIL or GIS is insulation test device for pipeline, the major structure includes test platform, test platform includes impact device 1, power frequency equipment 2, a plurality of adapting unit that are connected with test device that are connected through the wire, the equipment that needs to be tested is connected with impact device 1 and power frequency equipment 2 through adapting unit, be equipped with two first DS switches 3 between impact device 1 and power frequency equipment 2, each said adapting unit all connects between two first DS switches 3 through the wire, through the open and close control to two first DS switches 3, control the test that test device will carry out, make the part of the gas insulated metal closed switch device can not only carry out power frequency withstand voltage test under the prerequisite that need not dismantle at the same platform, can carry out the impact withstand voltage test again, avoid because dismantle the gaseous waste of SF6 and experimental efficiency that experimental facilities cause repeatedly are low, a first ES grounding switch 4 is respectively connected between the impact equipment 1 and the power frequency equipment 2 and the adjacent first DS switch 3,

the connecting part comprises a test part interface 5, a second ES grounding switch 6 and a second DS switch 7 which are connected in sequence, the test equipment is connected with the test platform through the test part interface 5, tests of power frequency withstand voltage and impact withstand voltage of multiple equipment, multiple voltage levels and multiple products can be simultaneously carried out through setting the test part interface 5 with different specifications, so that the problems of single function, low working efficiency and SF6 gas waste of the existing test platform are solved, the second DS switch 7 is arranged at the position of the connecting part close to the first DS switch 3, the on-off of a test circuit of a single connecting part is flexibly regulated and controlled through the second DS switch 7, after several pieces of equipment which only need to be tested are connected, the equipment which needs to be subjected to the same impact test is controlled through the second DS switch 7 to be tested simultaneously, and other pieces of equipment are not electrified temporarily, so that the use is more flexible and convenient,

the first ES grounding switch 4 and the second ES grounding switch 6 are mainly used for releasing induced current in equipment, protecting the safety of the equipment and testing personnel, and the ES grounding switches are operated after each test, so that the safety is improved while the experimental platform is more controllable.

Preferably, an insulating support 8 is connected between the first DS switch 3 and the impact device 1 and between the first DS switch 3 and the power frequency device 2, an insulating support 8 is connected between the second DS switch 7 and the test part interface 5, and the insulating support 8 mainly functions to support a conductor and divide an air chamber, and the GIS/GIL is a high voltage device and therefore has a very high requirement on the cleanliness of the insulating support.

Preferably, the first ES grounding switch 4 and the second ES grounding switch 6 both include an ES operating rod 9, an ES moving contact 10 and an ES stationary contact 11, the ES operating rod 9 controls the ES moving contact 10 and the ES stationary contact 11 to be switched on, and the ES moving contact 10 and the ES stationary contact 11 are switched on by controlling the ES operating rod 9 after the experiment starts and ends, so that the integral grounding of the experiment platform is realized, the residual charge of the experiment platform is released, and the accuracy of the experiment and the safety of experimenters are ensured.

Preferably, the first DS switch 3 and the second DS switch 7 both include a DS operating rod 12, a DS moving contact 13, and a DS fixed contact 14, the DS operating rod 12 controls the DS moving contact 13 and the DS fixed contact 14 to be switched on, and the DS operating rod 12 controls the DS moving contact 13 and the DS fixed contact 14 to be switched on, so as to realize the overall control of the experiment platform. As shown in fig. 4, different DS switches are controlled to realize the on-off of different loops, and an impact test and a withstand voltage test can be performed on different test equipment.

Preferably, a plurality of gas pressure gauges 15 are arranged on the test platform, the gas pressure in the test platform is detected, and the stability of the gas pressure in the test process is ensured, so that the accuracy of test data and the safety of the test process are ensured.

Preferably, the size of a plurality of the test part interfaces 5 is adjustable, so that the test platform can meet the requirements of multi-voltage level tests. The test part interface 5 can be expanded according to the test requirement, so that the test platform can adapt to various devices with various voltage levels for testing, and the problem caused by repeated disassembly is avoided.

Example (b): the utility model provides a GIL or GIS insulation test device for pipeline, includes test platform, be equipped with a plurality of gas pressure meter 15 on the test platform, a plurality of gas pressure meter 15 distribute on impact device 1, power frequency equipment 2, a plurality of adapting unit of being connected with test equipment for the gas pressure situation of SF6 in the equipment of monitoring among the testing process, test platform includes impact device 1, power frequency equipment 2, a plurality of adapting unit of being connected with test equipment that pass through the wire, impact device 1 is the equipment of simulation nature lightning impulse, for waiting to examine equipment provides 1675kV, 1.2/50 mus plus-minus polarity each 3 times, whether test equipment can the safe operation under the lightning impulse, power frequency equipment 2 provides required operating voltage for each voltage class equipment of experiment in order to examine its reliability, be equipped with two first DS switches 3 between impact device 1 and the power frequency equipment 2, each connecting part is connected between two first DS switches 3 through a lead, a first ES grounding switch 4 is respectively connected between the impact device 1 and the power frequency device 2 and the adjacent first DS switches 3, an insulating support 8 is connected between the first DS switch 3 and the impact device 1 and between the first DS switches 2,

the connecting component comprises a test part interface 5, a second ES grounding switch 6 and a second DS switch 7 which are connected in sequence, the second DS switch 7 is arranged at a position of the connecting component close to the first DS switch 3, an insulating support 8 is connected between the second DS switch 7 and the test part interface 5, the sizes of the plurality of test part interfaces 5 are adjustable, the first ES grounding switch 4 and the second ES grounding switch 6 respectively comprise an ES operating rod 9, an ES moving contact 10 and an ES static contact 11, the ES operating rod 9 is used for controlling the ES moving contact 10 and the ES static contact 11, the first DS switch 3 and the second DS switch 7 respectively comprise a DS operating rod 12, a DS moving contact 13 and a DS static contact 14, the DS operating rod 12 is used for controlling the DS moving contact 13 and the DS static contact 14 to be switched on, the DS operating rod 12 comprises a driving mechanism and a connecting rod mechanism, and the DS switch plays a role of switching on and off, the driving mechanism drives the link mechanism to swing at a high speed by 90 degrees to drive the DS static contact 14 to move back and forth, and the switch of the extra-high voltage equipment can generate large electric arcs, so that the driving speed of the driving mechanism is greatly required. The DS switch also has a shielding effect, and the shielding is used for smoothing an electric field, avoiding electric field mutation and improving the insulation margin of the equipment.

Claims

1. The utility model provides a GIL or GIS is insulation test device for pipeline, includes test platform, its characterized in that: the test platform comprises impact equipment (1) connected through a wire, power frequency equipment (2) and a plurality of connecting parts connected with the test equipment, wherein two first DS switches (3) are arranged between the impact equipment (1) and the power frequency equipment (2), each connecting part is connected between the two first DS switches (3) through a wire, first ES grounding switches (4) are respectively connected between the impact equipment (1) and the power frequency equipment (2) and between the adjacent first DS switches (3),

the connecting part comprises a test part interface (5), a second ES grounding switch (6) and a second DS switch (7) which are sequentially connected, and the second DS switch (7) is arranged at the position, close to the first DS switch (3), of the connecting part.

2. The insulation test device for the GIL or GIS pipeline as claimed in claim 1, wherein: all be connected with insulating support (8) between first DS switch (3) and impact equipment (1), power frequency equipment (2), also be connected with insulating support (8) between second DS switch (7) and test part article interface (5).

3. The insulation test device for the GIL or GIS pipeline as claimed in claim 1, wherein: the first ES grounding switch (4) and the second ES grounding switch (6) respectively comprise an ES operating rod (9), an ES moving contact (10) and an ES static contact (11), and the ES moving contact (10) and the ES static contact (11) are controlled to be switched on through the ES operating rod (9).

4. The insulation test device for the GIL or GIS pipeline as claimed in claim 1, wherein: the first DS switch (3) and the second DS switch (7) respectively comprise a DS operating rod (12), a DS moving contact (13) and a DS static contact (14), and the DS moving contact (13) and the DS static contact (14) are controlled to be switched on through the DS operating rod (12).

5. The insulation test device for the GIL or GIS pipeline as claimed in claim 1, wherein: and a plurality of gas pressure gauges (15) are arranged on the test platform.

6. The insulation test device for the GIL or GIS pipeline as claimed in claim 1, wherein: the size of the plurality of test part interfaces (5) can be adjusted.