CN109119280B - An isolating grounding switch and GIS equipment using the isolating grounding switch - Google Patents
An isolating grounding switch and GIS equipment using the isolating grounding switch Download PDFInfo
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- CN109119280B CN109119280B CN201710487288.3A CN201710487288A CN109119280B CN 109119280 B CN109119280 B CN 109119280B CN 201710487288 A CN201710487288 A CN 201710487288A CN 109119280 B CN109119280 B CN 109119280B
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- static contact
- grounding
- contact seat
- isolation
- seat
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Elimination Of Static Electricity (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
本发明提供了一种隔离接地开关及使用该隔离接地开关的GIS设备。隔离接地开关包括壳体，壳体内设有隔离静触座、快速接地静触座、接地静触座以及与各静触座对应的安装基座，隔离静触座、快速接地静触座和接地静触座中的至少一个通过位置调节机构径向位置可调地设于对应的安装基座上以实现静触座与对应动触头的轴向对中。隔离静触座、快速接地静触座和接地静触座中的至少一个与安装基座可调连接，使用时，通过位置调节机构调整静触座的位置，使静触座的中心轴线与对应的动触头的中心轴线相重合，保证两者的对中布置，在动触头与静触座相互插入时能够减小磨损，减少产生的金属异物，保证隔离接地开关的正常运行。
The invention provides an isolation grounding switch and GIS equipment using the isolation grounding switch. The isolation grounding switch includes a housing, and the housing is provided with an isolation static contact seat, a fast grounding static contact seat, a grounding static contact seat and a mounting base corresponding to each static contact seat, the isolation static contact seat, the fast grounding static contact seat and the grounding At least one of the stationary contact seats is arranged on the corresponding mounting base in a radially position-adjustable manner by a position adjusting mechanism to realize the axial centering of the stationary contact seat and the corresponding movable contact. At least one of the isolation static contact seat, the fast grounding static contact seat and the grounding static contact seat is adjustable and connected to the installation base. When in use, the position of the static contact seat is adjusted by the position adjustment mechanism, so that the central axis of the static contact seat corresponds to the corresponding The central axes of the moving contacts of the two contacts are coincident to ensure the centering arrangement of the two. When the moving contact and the static contact seat are inserted into each other, the wear and tear can be reduced, the metal foreign matter generated can be reduced, and the normal operation of the isolating grounding switch can be ensured.
Description
Technical Field
The invention relates to an isolation grounding switch and GIS equipment using the same.
Background
With the continuous development and innovation of science and technology in the power industry of China, SF6Gas Insulated metal-enclosed Switchgear (GIS for short) has been widely used in installation projects of substations of various voltage classes, and the isolating and grounding switch plays an important role as an important component in the GIS.
The bulletin date is 2014 19 days, the bulletin number of authorizing is CN 203491176U's a utility model discloses a gas insulated metal enclosed switchgear, switchgear includes the casing, be equipped with in the casing and keep apart the movable contact base, the static contact base of ground connection, keep apart static contact base and quick ground connection static contact base, wherein keep apart the movable contact base and keep apart the static contact base and all fix on the insulator, the static contact base of ground connection is fixed on the casing, quick ground connection static contact base an organic whole sets up on keeping apart the static contact base, therefore, the casing has constituted the mounting base of ground connection static contact base, the insulator has constituted the mounting base who keeps apart the movable contact base and keep apart the static contact base, simultaneously, keep apart the static contact base and have constituted the mounting base of quick ground connection static contact base, all realize linking to each other through fixed nonadjustable connected mode between each static contact base and the mounting base that corresponds.
In foretell switchgear, the stationary contact seat all fixes on the mounting base that corresponds separately, and in case centering between the moving contact that each stationary contact seat corresponds is not good or the direction of moving contact is not good, the moving contact aggravates with the contact finger wearing and tearing in the stationary contact seat, can produce more metallic foreign matter, leads to switchgear's insulation breakdown, leads to isolation earthing switch and quick ground connection short circuit function to become invalid, leads to irreversible damage to whole product.
Disclosure of Invention
The invention aims to provide an isolation grounding switch which can realize the centering arrangement of a moving contact and a static contact seat; a GIS device using the isolation grounding switch is also provided.
In order to achieve the purpose, the technical scheme of the isolation grounding switch is as follows: the utility model provides an isolation earthing switch, includes the casing, is equipped with isolation stationary contact, quick ground connection stationary contact, ground connection stationary contact and the mounting base that corresponds with each stationary contact in the casing, and isolation stationary contact, quick ground connection stationary contact and ground connection stationary contact are at least one through position control mechanism radial position locate adjustably on the mounting base that corresponds with the axial centering that realizes stationary contact and correspond the moving contact.
Furthermore, the position adjusting mechanism comprises at least one adjusting hole arranged on the static contact seat or the corresponding mounting base, a locking screw which is connected with the corresponding mounting base to realize that the static contact seat is adjusted in place and then fixed penetrates through the adjusting hole, and the adjusting hole is provided with a hole wall which forms a radial adjusting gap with the locking screw to realize that the radial position of the static contact seat and the corresponding mounting base can be adjusted.
Furthermore, an isolation movable contact base is further arranged in the shell, the grounding static contact base is arranged on the isolation movable contact base through the position adjusting mechanism, the quick grounding static contact base is arranged on the isolation static contact base through the position adjusting mechanism, the isolation movable contact base forms an installation base of the grounding static contact base, the isolation static contact base forms an installation base of the quick grounding static contact base, the shell is provided with an insulator, the isolation static contact base is arranged on the insulator through the position adjusting mechanism, and the insulator on the shell forms an installation base of the isolation static contact base.
Furthermore, be equipped with on the casing and be used for with keep apart stationary contact seat, ground connection stationary contact seat and the quick ground connection stationary contact seat correspond be used for supplying the centering operation hole of operating personnel centering regulation.
Furthermore, the isolation grounding switch comprises an isolation moving contact, a quick grounding moving contact and a grounding moving contact which correspond to the isolation static contact seat, the quick grounding static contact seat and the grounding static contact seat, the isolation grounding switch further comprises an operating mechanism corresponding to each moving contact, the isolation moving contact is guided to penetrate in the isolation moving contact seat, the isolation grounding switch further comprises a first guide structure for guiding the quick grounding moving contact to penetrate and a second guide structure for guiding the grounding moving contact to penetrate and a guide ring is arranged in at least one of the first guide structure, the second guide structure and the isolation moving contact seat, and the number of the guide rings is at least two and the fractures of the guide rings are arranged in a staggered mode in the circumferential direction of the guide ring.
The GIS equipment of the invention has the technical scheme that: the utility model provides a GIS equipment, includes isolation earthing switch, and isolation earthing switch includes the casing, is equipped with isolation stationary contact, quick ground connection stationary contact, ground connection stationary contact and the mounting base that corresponds with each stationary contact in the casing, and at least one in isolation stationary contact, quick ground connection stationary contact and the ground connection stationary contact locates adjustably through position adjustment mechanism radial position on the mounting base that corresponds in order to realize the stationary contact with the axial centering that corresponds the moving contact.
Furthermore, the position adjusting mechanism comprises at least one adjusting hole arranged on the static contact seat or the corresponding mounting base, a locking screw which is connected with the corresponding mounting base to realize that the static contact seat is adjusted in place and then fixed penetrates through the adjusting hole, and the adjusting hole is provided with a hole wall which forms a radial adjusting gap with the locking screw to realize that the radial position of the static contact seat and the corresponding mounting base can be adjusted.
Furthermore, an isolation movable contact base is further arranged in the shell, the grounding static contact base is arranged on the isolation movable contact base through the position adjusting mechanism, the quick grounding static contact base is arranged on the isolation static contact base through the position adjusting mechanism, the isolation movable contact base forms an installation base of the grounding static contact base, the isolation static contact base forms an installation base of the quick grounding static contact base, the shell is provided with an insulator, the isolation static contact base is arranged on the insulator through the position adjusting mechanism, and the insulator on the shell forms an installation base of the isolation static contact base.
Furthermore, be equipped with on the casing and be used for with keep apart stationary contact seat, ground connection stationary contact seat and the quick ground connection stationary contact seat correspond be used for supplying the centering operation hole of operating personnel centering regulation.
Furthermore, the isolation grounding switch comprises an isolation moving contact, a quick grounding moving contact and a grounding moving contact which correspond to the isolation static contact seat, the quick grounding static contact seat and the grounding static contact seat, the isolation grounding switch further comprises an operating mechanism corresponding to each moving contact, the isolation moving contact is guided to penetrate in the isolation moving contact seat, the isolation grounding switch further comprises a first guide structure for guiding the quick grounding moving contact to penetrate and a second guide structure for guiding the grounding moving contact to penetrate and a guide ring is arranged inside at least one of the first guide structure, the second guide structure and the isolation moving contact seat, and the number of the guide rings is at least two and the fractures of the guide rings are arranged in a staggered mode in the circumferential direction of the guide ring.
The invention has the beneficial effects that: when the isolating grounding switch provided by the invention is used, the position of the static contact seat is adjusted through the position adjusting mechanism, so that the central axis of the static contact seat is superposed with the central axis of the corresponding moving contact, the axial centering arrangement of the static contact seat and the moving contact is ensured, the abrasion can be reduced when the moving contact and the static contact are inserted into each other, the generated metal foreign matters are reduced, and the normal operation of the isolating grounding switch is ensured.
The grounding static contact seat is arranged on the isolation movable contact seat, and the quick grounding static contact seat is arranged on the isolation static contact seat, so that the design of compactness and integration is realized, and the position adjustment of the grounding static contact seat is more convenient.
The guide rings are multiple in number, and the fractures of the guide rings are arranged in a staggered mode in the circumferential direction, so that the condition that poor guidance occurs at the fractures when only one guide ring or guide rings with the same fracture direction exist is prevented.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of an isolation grounding switch of the present invention;
FIG. 2 is a schematic diagram of an operating mechanism of a disconnecting switch in an embodiment of the disconnecting grounding switch of the present invention;
FIG. 3 is a schematic diagram of an earthing switch operating mechanism in an embodiment of the disconnecting earthing switch according to the present invention;
FIG. 4 is a schematic diagram of a fast grounding switch operating mechanism in an embodiment of the isolation grounding switch of the present invention;
FIG. 5 is a schematic diagram of an embodiment of an isolation grounding switch of the present invention;
fig. 6 is a schematic view of the first guide ring of fig. 1.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In the embodiment of the isolation grounding switch of the invention, as shown in fig. 1 to 6, the isolation grounding switch comprises a horizontally extending housing 1, and a basin-type insulator 2 is arranged at the left end of the housing 1. An isolating switch, a grounding switch and a quick grounding switch are arranged in the shell.
The isolating switch comprises an isolating static contact seat 3 fixed on the basin-type insulator 2, the isolating static contact seat 3 is made of a conductive material, and the isolating static contact seat 3 is connected with a circuit breaker of the GIS equipment. A contact finger (not shown in the figure) is arranged in the isolation static contact seat 3, the contact finger is fixed on the isolation static contact seat 3 through a plate spring and a support frame, and the contact finger is electrically connected after being extruded by the isolation moving contact 5. Four unthreaded holes (not shown in the figure) are formed in the basin-type insulator 2, and four isolating switch screws 4 respectively penetrate through the four unthreaded holes to fix the isolating static contact seat 3 on the basin-type insulator 2. In this embodiment, the diameter of four unthreaded holes all is greater than the external diameter of isolator screw 4 screw rod portion, forms the regulation clearance between unthreaded hole pore wall and the screw rod portion promptly, when the installation, can remove isolation stationary contact seat 3 and make the axis of the isolation stationary contact finger of isolation stationary contact seat 3 and the axis coincidence of isolation moving contact back reuse screw locking fixed. The isolating switch also comprises an isolating movable contact seat 6 positioned on the right side of the isolating static contact seat and an isolating movable contact 5 arranged in the isolating movable contact seat in a guiding manner, wherein the isolating movable contact seat 6 is connected with a current transformer of the GIS device in a conducting manner. A watchband contact finger, a first guide ring 8 and a second guide ring 9 are arranged in the isolating movable contact seat, the watchband contact finger is used for being electrically connected with the isolating movable contact, and the guide rings are used for guiding the movement of the isolating movable contact. The conventional guide ring only has a fracture to realize the guide effect, but fracture department is the easy pressurized deformation, the bad condition of direction appears, in this embodiment, the quantity of guide ring is two and along left right direction interval arrangement, and the fracture of two guide rings is arranged in the circumference stagger, can guarantee the complete validity of direction, has realized keeping apart the guide effect of movable contact seat to keeping apart the movable contact. In other embodiments, the number of guide rings may be increased as practical.
The isolating switch operating mechanism 7 which enables the isolating moving contact to move horizontally is arranged at the right end of the isolating moving contact 5, the isolating switch operating mechanism 7 comprises an isolating switch operating mechanism shell 18 arranged on the shell, an isolating switch input connecting lever 19 which swings in an arc shape and a guide rod 20 which extends in the left-right direction along the guide direction are arranged in the isolating switch operating mechanism shell 18, and the swing axis of the isolating switch input connecting lever 19 is perpendicular to the left-right direction. The guide rod 20 is provided with a moving part 23 through a linear bearing 22 in a guiding and moving mode, the moving part 23 is connected with an isolation moving contact 5 through an insulation pull rod in a transmission mode, the moving part 23 is of an L-shaped structure, one side of the moving part is guided and installed on the guide rod, the other side of the moving part is connected with the isolation moving contact in a transmission mode, a transmission pin shaft is arranged on the moving part, a guide long hole 21 is formed in a power input crank arm, the transmission pin shaft is matched with the hole wall of the guide long hole 21, when the power input crank arm swings, the moving part can be driven to move left and right, and then the isolation moving contact is driven to move left and right. When the isolation moving contact is communicated with the isolation static contact finger of the isolation static contact seat, the isolation switch is in a closing state, and when the isolation moving contact and the isolation static contact finger are separated, the isolation switch is in a breaking state.
The grounding switch comprises a grounding switch operating mechanism 13, a grounding moving contact 12 and a grounding static contact seat 10, wherein a Z-shaped contact finger is arranged on the grounding static contact seat 10, the Z-shaped contact finger is fixed on the grounding static contact seat through a plate spring and a grid, the opening and closing actions of the grounding switch are completed through the separation and holding of the grounding moving contact 12 and the Z-shaped contact finger, the grounding static contact seat 10 is arranged on the side surface of an isolation moving contact seat 6, a threaded connection hole is formed in the periphery of the isolation moving contact seat, four unthreaded holes are formed in the grounding static contact seat, four grounding switch screws 11 respectively penetrate through the four unthreaded holes and then fix the grounding static contact seat 10 on the isolation static contact seat 6, in the embodiment, the diameters of the four unthreaded holes are all larger than the outer diameter of a screw rod part, namely, a radial adjusting gap is formed between the wall of the unthreaded holes and the periphery of the screw rod part, when the grounding static contact seat is installed, the position of the grounding static contact seat can be moved so that the axis of the isolation static contact finger of the grounding static contact seat is coincided with the axis of the moving contact finger and the axis of the moving contact finger, and then the grounding static contact finger is locked by the screw rod And (4) fixing. The upper end of the grounding moving contact is provided with a grounding switch operating mechanism 13, the grounding switch operating mechanism 13 comprises a grounding switch operating mechanism shell 24 arranged on the periphery of the shell 1, a grounding switch guide block 27 is fixed on the grounding switch operating mechanism shell 24, the grounding switch guide block 27 can conduct electricity and be grounded, the grounding moving contact 12 is guided to penetrate in the grounding switch guide block 27, a contact finger (not shown in the figure) is arranged in the grounding switch guide block 27, a third guide ring 28 and a fourth guide ring 29 are arranged, the number and the arrangement mode of the guide rings are consistent with the number and the arrangement mode of the guide rings in the isolating moving contact base, and the content of the guide rings is not repeated herein. The earthing switch operating mechanism shell is internally provided with an earthing switch input crank arm 25 which can do swinging motion, a first transition connecting plate 26 is arranged between the earthing switch input crank arm 25 and the upper end of the earthing moving contact 12, and two ends of the first transition connecting plate 26 are connected with the power input crank arm and the earthing moving contact through a shaft pin and an insulating bush. The power input crank arm swings, force is transmitted to the grounding moving contact through the transition connecting plate, and the grounding moving contact does linear motion in the vertical direction in the guide block.
The quick grounding switch comprises a quick grounding moving contact 16, a quick grounding switch operating mechanism 17 and a quick grounding static contact seat 14, wherein a Z-shaped contact finger is arranged in the quick grounding static contact seat, the installation mode of the Z-shaped contact finger is consistent with that of the Z-shaped contact finger in the grounding static contact seat, and the content of the Z-shaped contact finger is not repeated herein. Contact the separation that indicates with the Z type through quick ground connection moving contact and hold tightly and accomplish quick earthing switch's divide-shut brake action, quick ground connection stationary contact is located on the side of keeping apart stationary contact, set up threaded connection hole on keeping apart stationary contact periphery, four unthreaded holes have been seted up on keeping apart stationary contact, four quick ground connection switch screws 15 pass four unthreaded holes respectively after will quick ground connection stationary contact fix on keeping apart stationary contact, in this embodiment, the diameter of four unthreaded holes all is greater than the external diameter of screw rod portion, form radial adjustment clearance between unthreaded hole pore wall and the screw rod portion periphery promptly, when the installation, the position that can remove quick ground connection stationary contact makes the axis of the isolation stationary contact finger of quick ground connection stationary contact and the axis coincidence back reuse screw of quick ground connection moving contact lock fixedly. The upper end of quick ground connection moving contact is equipped with quick ground connection switch operating device 17, quick ground connection switch operating device is including locating the quick ground connection switch operating device casing 30 of casing periphery, be fixed with quick ground connection switch guide block 33 on the quick ground connection switch operating device casing 30, quick ground connection switch guide block 33 can electrically conduct and ground connection, the dress is worn in quick ground connection switch guide block 33 to ground connection moving contact direction, be equipped with electrically conductive contact finger (not drawn in the picture) in quick ground connection switch guide block 33, fifth guide ring 34 and sixth guide ring 35, wherein the quantity and the arrangement mode of the guide ring of quantity and arrangement mode and foretell isolation stationary contact seat in the guide ring are unanimous, its content is no longer repeated here. The shell of the quick grounding switch operating mechanism is internally provided with a quick grounding switch input crank arm 31 which can do swinging motion, a second transition connecting plate 32 is arranged between the quick grounding switch input crank arm 31 and the upper end of the quick grounding moving contact 16, and two ends of the second transition connecting plate 32 are connected with the power input crank arm and the grounding moving contact through shaft pins. The power input crank arm swings, force is transmitted to the grounding moving contact through the transition connecting plate, and the grounding moving contact does linear motion in the vertical direction in the guide block. Because the speed of the quick grounding moving contact in the quick grounding switch is faster than that of the grounding moving contact, in order to prolong the service life, the guide ring is made of materials which are more wear-resistant and have high hardness.
In this embodiment, each moving contact is guaranteed the axis coincidence of the circumference contact finger in moving contact and the stationary contact through finely tuning the clearance between the screw of fixed stationary contact and the screw unthreaded hole under the condition that each moving contact is guaranteed the moving contact linear motion by the operating device who corresponds separately, has solved the problem of centering. An adsorbent assembling mounting hole 36 is formed on the housing, and an adsorbent cover plate is arranged on the adsorbent assembling mounting hole. In this embodiment, the adsorbent assembly mounting hole is used as the centering handle hole, and when needs to carry out centering adjustment to the stationary contact, open the adsorbent apron, operating personnel can carry out centering adjustment.
In this embodiment, the basin-type insulator constitutes an installation base of the isolation stationary contact, the isolation stationary contact constitutes an installation base of the fast grounding stationary contact, and the isolation movable contact constitutes an installation base of the grounding stationary contact. In this embodiment, the position adjusting mechanism is a light hole formed in the stationary contact base, and in other embodiments, the position adjusting mechanism may have another structure, such as a slide rail formed in the stationary contact base, and is fixed by a locking screw after sliding in place. In this embodiment, the guide block of the fast earthing switch is a first guide structure, and the guide block of the earthing switch is a second guide structure.
In this embodiment, all three stationary contact seats are arranged on the corresponding mounting base through the position adjusting mechanism, and in other embodiments, only one or two of the three stationary contact seats can be arranged on the corresponding mounting base through the position adjusting mechanism.
In this embodiment, three of the isolated grounding switches are provided with guide rings, and in other embodiments, only one or any two of the guide rings may be provided.
In the specific embodiment of the GIS device of the present invention, the GIS device includes the isolation grounding switch, and the structure thereof is the same as that of the above-mentioned embodiment, and the details thereof are not repeated herein.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710487288.3A CN109119280B (en) | 2017-06-23 | 2017-06-23 | An isolating grounding switch and GIS equipment using the isolating grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710487288.3A CN109119280B (en) | 2017-06-23 | 2017-06-23 | An isolating grounding switch and GIS equipment using the isolating grounding switch |
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| CN109119280A CN109119280A (en) | 2019-01-01 |
| CN109119280B true CN109119280B (en) | 2021-10-29 |
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| CN201710487288.3A Active CN109119280B (en) | 2017-06-23 | 2017-06-23 | An isolating grounding switch and GIS equipment using the isolating grounding switch |
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| CH659548A5 (en) * | 1982-06-04 | 1987-01-30 | Sprecher & Schuh Ag | Interruptor switch for encapsulated, gas-insulated high-voltage switching installations |
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| Publication number | Publication date |
|---|---|
| CN109119280A (en) | 2019-01-01 |
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