CN204732774U - A kind of band isolation fracture GIS oil-gas casing structure - Google Patents

Abstract

The utility model discloses a kind of band isolation fracture GIS oil-gas casing structure, belong to GIS device technical field, comprise housing, one end of described housing is connected with transformer, the other end is provided with case type disk insulator, disk insulator is connected with the moved end conductor be arranged in housing, and fixed conductor is connected with sliding conductor, and sliding conductor is connected with quiet end conductor and is connected with the bushing that transformer stretches out.The inner conductor that GIS oil-gas casing structure of the present utility model uses is few, greatly reduce the transition of conductor overlap joint, electric property is improved greatly, simultaneously, the setting of the utility model isolation fracture, make oil-gas casing structure installment easier, thus can realize GIS device and transformer independently carries out the tests such as on-the-spot industrial frequency withstand voltage.

Description

An Oil and Gas Casing Structure for GIS with Isolation Fracture

【Technical field】

The utility model belongs to the technical field of GIS equipment and relates to an oil-gas casing structure for GIS, in particular to an oil-gas casing structure for GIS with isolation fractures.

【Background technique】

With the rapid development of the power industry and power grid construction, open-type power equipment with large land occupation, cumbersome installation, and short repair and maintenance cycle will be gradually replaced by small, light weight, simple structure, stable performance, and long repair and maintenance cycles. Metal-enclosed gas-insulated combined electrical equipment instead. The connection form of combined electrical appliances and transformers also tends to be closed, that is, the connection form of oil and gas bushings. However, the existing oil and gas bushings are hard-connected, and the installation is relatively cumbersome, and the connection between the combined electrical appliance and the transformer cannot be completed at one time. The closed combined electrical equipment of the power equipment connected therewith needs a kind of new oil-gas bushing structure badly.

【Content of utility model】

The purpose of the utility model is to provide an oil-gas bushing structure with isolation fractures for GIS. The conductor of this structure is easy to overlap, which can reduce the use of connecting electrical components, effectively improve the electrical performance of the oil-gas bushing for GIS, and is easy to install.

The utility model is realized through the following technical solutions:

An oil and gas bushing structure for GIS with an isolation fracture, comprising an isolation fracture housing, one end of the isolation fracture housing is connected to the oil and gas bushing housing, and the other end is provided with a closed disc insulator, the oil and gas bushing housing It is connected with the transformer; the end of the disk insulator located in the isolation fracture shell is equipped with a moving conductor, the interior of the moving conductor is provided with a sliding conductor, the moving conductor is adjacent to a static conductor, and the static conductor is fixed on the transformer On the protruding high-voltage bushing; there is an isolation fracture between the moving-end conductor and the static-end conductor, and the sliding conductor can extend out of the moving-end conductor and contact the static-end conductor.

The isolation fracture shell is a four-way structure, and the inner wall is equipped with a crank arm that can be operated around the shaft. The moving end conductor is provided with a slideway and an operation hole, and the sliding conductor is installed in the moving end conductor. The hole is hinged with the sliding conductor; driven by the crank arm, the sliding conductor can contact and separate from the static end conductor.

The center line of the sliding conductor coincides with the conductor at the static end.

The length of the sliding conductor is greater than the length of the isolation fracture, and when the sliding conductor is completely separated from the static end conductor, the moving end conductor and the static end conductor are insulated by gas.

The distance between the isolation fractures is greater than or equal to 52.5mm.

The static end conductor is fixed on the high voltage bushing protruding from the transformer, the moving end conductor and the static end conductor are both provided with spring contact fingers, and the sliding conductor is in contact with the moving end conductor through the spring contact fingers.

The two ends of the oil and gas bushing shell have different flange structures, one end is a through hole, and the other end is a blind hole. The through hole end is connected to the transformer, and the blind hole end is connected to the isolation fracture shell.

The end of the oil and gas bushing shell connected to the transformer is also provided with an insulating part composed of an insulating flange and an insulating sleeve. The insulating sleeve is a T-shaped sleeve, and the insulating sleeve is arranged between the GIS flange and the insulating flange. Bolts pass through the insulating sleeve to fix the GIS flange, insulating flange and transformer flange.

The crank arm is made of insulating material.

Compared with the prior art, the utility model has the following beneficial technical effects:

The oil-gas bushing structure for GIS with isolation fracture of the utility model connects the shell with the transformer end, and this oil-gas bushing structure for GIS with isolation fracture saves a large part compared with the existing oil-gas bushing structure The intermediate connection components greatly reduce the transition overlap of the conductors, which greatly improves the electrical performance. The oil and gas bushing structure of the utility model is provided with an isolation fracture, which makes the installation of the oil and gas bushing structure easier, so that the GIS equipment and the transformer can independently conduct on-site power frequency withstand voltage and other tests.

Further, the design of the crank arm ensures the operability of the contact and separation between the sliding conductor and the conductor at the static end. At the same time, it is installed on the housing, so that the crank arm can be operated from the outside of the housing, and then the sliding conductor can be operated to make contact with the conductor at the moving end. linear motion. At the same time, the crank arm and the sliding conductor form a rocker mechanism, which is stable in operation, labor-saving and strong in practicability.

Furthermore, the reasonable setting of the isolation fracture ensures the insulation stability when the power is off during actual operation. Guarantee the independence of GIS equipment.

Furthermore, the setting of the spring contact fingers ensures that during the operation of the sliding conductor, the sliding conductor is always in contact with the moving end conductor, so as to avoid poor contact caused by vibration caused by operation or electrical accident caused by arcing.

Furthermore, in the oil-gas bushing structure of the utility model, insulating components are provided between the oil-gas bushing and the transformer, so as to realize the insulation between the GIS casing and the transformer casing.

【Description of drawings】

Fig. 1 is a structural sectional view of the utility model.

Among them: 1 is the isolation fracture shell; 2 is the moving end conductor; 3 is the crank arm; 4 is the sliding conductor; 5 is the static end conductor; 6 is the casing of the oil and gas bushing; 7 is the insulating sleeve; 9 is a disc insulator; 10 is a spring contact finger.

【Detailed ways】

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Referring to Fig. 1, an oil-gas casing structure for GIS with an isolation fracture of the present utility model includes a four-way isolation fracture housing 1, the isolation fracture housing 1 is a weldment, and the lengths of the opposite sides are 685mm and 590mm respectively. ; One end of the isolation fracture shell 1 is connected to the oil and gas bushing shell 6, and the other end is provided with a closed disc insulator 9. The end of the oil and gas bushing casing 6 connected to the transformer is provided with a GIS flange and an insulating part; the insulating part is composed of an insulating flange 8 and an insulating sleeve 7, and the GIS flange is connected to the transformer flange through the insulating flange 8. The insulating sleeve 7 is a T-shaped bushing, and the insulating sleeve 7 is arranged between the GIS flange and the insulating flange 8. The bolts pass through the insulating sleeve 7 to fix the GIS flange, the insulating flange 8 and the transformer flange, and the GIS shell can be realized. Insulation between body and transformer case. The disk insulator 9 can isolate the gas chamber of the oil and gas casing from the main gas chamber of the GIS equipment, and the gas chamber is small, and the installation and handling are easier; The moving conductor 2 is also connected with a sliding conductor 4, the sliding conductor 4 can be connected with the static conductor 5, and the static conductor 5 is fixed on the high voltage bushing protruding from the transformer and placed in the oil and gas bushing casing 6.

The moving conductor 2 is provided with a slideway and an operation hole, and the sliding conductor 4 is movably arranged in the slideway. Two spring contact fingers 10 are installed on the sliding conductor 4 and the static conductor 5 respectively. Fractures are formed between them, and the distance between the fractures is L, L≥52.5mm, which is the minimum distance required to meet the insulation requirements between the moving-end conductor 2 and the static-end conductor 5. One end of the crank arm 3 is connected to the isolation fracture shell 1 through a shaft, and the other end penetrates into the operating hole of the movable end conductor 2 and is hinged with one end of the sliding conductor 4, and the sliding conductor 4 passes through the crank arm 3 installed on the isolation fracture shell 1. The rotation of the moving end conductor 2 and the static end conductor 5 are connected and disconnected; the setting of the isolation fracture realizes the independent operability of the field test of the GIS equipment and the field test of the transformer equipment. Specifically, the sliding conductor 4 is provided with a mounting groove perpendicular to its axis, so that the rotation of the crank arm 3 can drive the sliding conductor 4 to move linearly in the moving end conductor 2 .

When installing the oil-gas casing structure for GIS of the present utility model, firstly, the turning arm 3 is installed on the inner wall of the isolation fracture shell 1, and the moving end conductor 2 is fixed on the disc insulator 9 with screws, and the spring contact finger 10 is installed, Install the sliding conductor 4, and at the same time install the disk insulator 9 on the isolation fracture shell 1, connect the crank arm 3 to the sliding conductor 4; then install the oil and gas bushing shell 6 on the transformer with screws, and install them in sequence Insulate the flange 8 and the insulating sleeve 7, install the static end conductor 5 on the end face of the high-voltage bushing of the transformer, and install the spring-mounted contact finger 10; finally, fix the isolation fracture shell 1 and the oil-gas bushing shell 6 with screws. If the field test is to be carried out on the GIS equipment and the transformer equipment respectively after installation, then the rotating crank arm 3 will move the sliding conductor 4 into the moving end conductor 2, and the isolation fracture will be formed. Rotate the crank arm 3 in the direction to move the sliding conductor 4 into the static end conductor 5, so that the main circuit of the GIS equipment and the main circuit of the transformer are conducted.

The above content is a further detailed description of the utility model in conjunction with specific preferred embodiments. It cannot be determined that the specific embodiment of the utility model is limited to this. Under the premise of the new concept, some simple deduction or replacement can also be made, which should be regarded as belonging to the utility model and the patent protection scope is determined by the submitted claims.

Claims (9)

1. an oil-gas bushing structure for band isolation fracture GIS, is characterized in that, comprises isolation fracture casing (1), and one end of described isolation fracture casing (1) links to each other with oil-gas casing casing (6), and another One end is provided with a closed disc insulator (9), and the oil and gas bushing housing (6) is connected to the transformer; the end of the disc insulator (9) in the isolation fracture housing (1) is equipped with a moving terminal conductor (2), the moving conductor (2) is provided with a sliding conductor (4), and the moving conductor (2) is adjacent to a static conductor (5), and the static conductor (5) is fixed on the high voltage transformer protruding On the casing; there is an isolation fracture between the moving conductor (2) and the static conductor (5), and the sliding conductor (4) can protrude from the movable conductor (2) to contact the static conductor (5). 2. The oil and gas casing structure for GIS with isolation fracture according to claim 1, characterized in that, the isolation fracture housing (1) is a four-way structure, and a crank arm capable of operating around the shaft is installed on its inner wall (3), the moving end conductor (2) is provided with a slideway and an operating hole, the sliding conductor (4) is installed in the moving end conductor (2), the crank arm (3) penetrates into the operating hole and is hinged with the sliding conductor (4) ; Driven by the crank arm (3), the sliding conductor (4) can contact and separate from the static end conductor (5). 3. The oil and gas casing structure for GIS with isolation fractures according to claim 1, characterized in that, the center line of the sliding conductor (4) coincides with the center line of the static end conductor (5). 4. The oil-gas bushing structure for GIS with isolation fracture according to claim 1, characterized in that, the length of the sliding conductor (4) is greater than the length of the isolation fracture, when the sliding conductor (4) and the static end conductor (5 ) are completely separated, gas insulation between the moving end conductor (2) and the static end conductor (5). 5. The oil and gas casing structure for GIS with isolation fractures according to claim 4, characterized in that the distance of the isolation fractures is greater than or equal to 52.5mm. 6. The oil-gas bushing structure for GIS with isolation fracture according to claim 1, characterized in that, the static end conductor (5) is fixed on the high-voltage bushing protruding from the transformer, and the moving end conductor (2) and the static end conductor (2) are Spring contact fingers (10) are arranged inside the terminal conductors (5), and the sliding conductor (4) contacts with the moving terminal conductor (2) through the spring contact fingers (10). 7. The oil-gas bushing structure for GIS with isolation fractures according to claim 1, characterized in that the two ends of the oil-gas bushing shell (6) have different flange structures, one end through hole, one end blind hole, through hole The end is connected with the transformer, and the blind hole end is connected with the isolation fracture shell (1). 8. The oil-gas bushing structure for GIS with isolation fracture according to claim 1, characterized in that, the end of the oil-gas bushing casing (6) connected to the transformer is also provided with an insulating flange (8) and an insulating sleeve (7) Insulation parts composed of, the insulating sleeve (7) is a T-shaped sleeve, the insulating sleeve (7) is arranged between the GIS flange and the insulating flange (8), and the bolt passes through the insulating sleeve (7) to GIS flange, insulating flange (8) and transformer flange are fixed. 9. The oil and gas casing structure for GIS with isolation fractures according to claim 2, characterized in that the crank arm (3) is made of insulating material.