CN217768203U - Three-station isolation grounding switch - Google Patents
Three-station isolation grounding switch Download PDFInfo
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- CN217768203U CN217768203U CN202221807031.4U CN202221807031U CN217768203U CN 217768203 U CN217768203 U CN 217768203U CN 202221807031 U CN202221807031 U CN 202221807031U CN 217768203 U CN217768203 U CN 217768203U
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- side assembly
- grounding
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- static
- conductor
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Abstract
The utility model discloses a three-station isolation earthing switch, which comprises a housin, be provided with quiet side assembly, move side assembly, ground contact, insulating torsion bar and conductor in the casing, quiet side assembly passes through the conductor and is connected with the benzvalene form insulator, and quiet side possesses multiple mode of being qualified for the next round of competitions. The movable side assembly is connected with the operating mechanism through an insulating torsion bar, and one side of the shell, which is close to the movable side assembly, is provided with a grounding contact. The utility model discloses can realize multiple mode of being qualified for the next round of competitions, when satisfying the nimble demand of arranging in scene, can also reduce the input of tee bend switching module and shorten and draw generating line length to one side, can reduce product manufacturing cost on the one hand, on the other hand also is convenient for whole interval transportation, practices thrift the manpower and the material resources of installation.
Description
Technical Field
The utility model belongs to the technical field of earthing switch, concretely relates to three station isolation earthing switch.
Background
At present, in an ultrahigh voltage power system, particularly in one and one half times wiring diagonal bus bar engineering arrangement of ultrahigh voltage gas insulated metal enclosed switchgear (GIS), a two-station isolating switch and a three-station isolating grounding switch are shown in figures 1 and 2, and only side face wire outlets are arranged, so that when other equipment needs to be arranged on the isolating switch, the isolating switch needs to be arranged through a tee joint switching module, and the problems of multiple tee joint/four-way switching modules and inconvenience in overall transportation exist.
The prior art CN203966948U discloses a three-position isolation grounding switch in a gas insulated metal enclosed switchgear, which aims to provide a three-position isolation grounding switch with high current, high insulation level, and stronger arc ablation resistance when switching bus switching current.
It includes: the conductor is arranged on the basin-type insulator, an insulating pull rod is arranged between the moving contact and the transmission mechanism, one end of the insulating pull rod is connected with the transmission mechanism, the other end of the insulating pull rod is connected with the gear, the transmission mechanism is arranged on the flange, and the three-station electric operating mechanism is connected with one phase of transmission mechanism; the gear is meshed with a rack fixed in the moving contact; the transmission link adopts three-phase linkage, and a three-station electric operating mechanism is shared, so that the three-phase synchronism of opening and closing operations is effectively ensured, and the performance is more reliable; the inside moving contact that adopts direct-acting bayonet copper product of switch, the circle spring structure of middle contact multiple spot contact, middle contact seat are equipped with the guide ring, guarantee that the moving contact is in central point and put, produce even normal pressure to the circle spring in the circumference within range, and the many-sided discharge capacity that improves. When the switching bus converts current, the moving contact is separated from the isolating static contact first, the moving contact is separated from the arc contact later, and the arc is ignited between the moving contact and the arc contact, so that the arc is prevented from ablating the shielding case; the switch fracture shielding is a spinning shielding case structure connected by arcs with multiple curvature radiuses, the electric field intensity is uniform and reliable, the opening distance is effectively shortened, the switch space volume is smaller, the structure is more compact, and the whole weight of the switch is lighter.
During operation, three station electric operating mechanisms pass through drive mechanism and drive insulating pull rod and gear synchronous revolution, and gear engagement rack turns into rectilinear motion with rotary motion, and the rack inlays in the movable contact inslot, and rack rectilinear motion takes moving contact rectilinear motion to realize dividing, closing a floodgate action: the moving contact is contacted with the isolation static contact to execute the closing function of the isolation switch, and the switch is in the running state in the power system; the moving contact is positioned in the middle position and is not contacted with the isolation static contact and the grounding static contact, and the station is in an intermediate state between operation and maintenance of the switch in the power system; the moving contact contacts with the grounding fixed contact, and the station executes the functions of grounding, closing and switching on, and is in a maintenance state of the switch in the power system.
In the prior art, the three-position isolation grounding switch adopts the arrangement mode as shown in fig. 2 in the practical engineering use, and the following defects mainly exist: the isolation static side only has a through-flow outlet mode, when the isolating switch is switched on, the static side and the static side form an L-shaped through-flow main loop, the loop structure is single, and the requirement of flexible arrangement on site cannot be met.
Disclosure of Invention
The utility model provides a three-station isolation grounding switch, when reducing the input of tee bend switching module and shortening cable-stay generating line length, satisfy the on-the-spot demand of arranging in a flexible way.
In order to achieve the purpose, the three-station isolation grounding switch comprises a shell, wherein a static side assembly, a movable side assembly, a grounding contact, an insulation torsion bar and a conductor are arranged in the shell, the static side assembly is connected with a first basin-type insulator through the conductor, and the first basin-type insulator is positioned on the upper side of the shell; the movable side assembly is connected with the operating mechanism through an insulating torsion bar, and one side of the shell, which is close to the movable side assembly, is provided with a grounding contact.
Furthermore, one side of the static side assembly, which is far away from the dynamic side assembly, is connected with the second basin-type insulator.
Furthermore, the conductor is spliced with the first basin-type insulator.
Furthermore, one side of the static side assembly, which is far away from the dynamic side assembly, is blocked by a shielding head, a cover plate is arranged on the outer side of the shielding head, and the cover plate is fixedly connected with the shell.
Further, the operating mechanism is arranged above the shell.
Further, particle traps are arranged below the static side assembly and the dynamic side assembly.
Further, the particle catcher is detachably mounted on the bottom surface of the housing.
Furthermore, the grounding contact is connected with a grounding cover plate, and the grounding cover plate is arranged outside the shell.
Compared with the prior art, the utility model discloses following profitable technological effect has at least:
the utility model discloses a three station isolation earthing switch quiet sides can realize multiple mode of being qualified for the next round of competitions, when satisfying the nimble demand of arranging in the scene, can also reduce the input of tee bend switching module and shorten cable-stay generating line length, can reduce product manufacturing cost on the one hand, and on the other hand also is convenient for whole interval transportation, practices thrift the manpower and the material resources of installation.
Furthermore, the main loop on the moving side adopts a right-angle through-flow structure and is directly connected with the current transformer, so that a connecting tee joint switching module can be omitted.
Furthermore, the static side adopts three outgoing modes of upward outgoing, lateral outgoing or double outgoing, and the functions of casing incoming and outgoing and diagonal bus connection can be realized independently and simultaneously in one and a half of intervals, so that the increase of redundant tee joint connection modules is avoided.
Furthermore, the operating mechanism is arranged on the machine body, so that the space for maintenance is saved, and the space of the maintenance platform of the machine body can be prevented from being occupied.
Furthermore, a particle catcher is arranged below the fracture of the three-station isolation grounding switch, so that the foreign matters possibly generated between the fractures can be collected and restrained, and the phenomenon that the horizontally arranged basin-type insulator bears the foreign matters is avoided, so that the risk of foreign matter discharge is generated.
Drawings
FIG. 1 is a schematic diagram of a conventional two-position disconnecting switch arrangement;
fig. 2 is a schematic layout of a conventional three-position isolation grounding switch;
fig. 3 is a schematic structural view of a three-position isolation earthing switch of embodiment 1;
fig. 4 is a schematic structural view of a three-position isolation grounding switch in embodiment 2;
FIG. 5 is a schematic view of a first and third spacing arrangement under the diagonal draw bus arrangement;
FIG. 6 is a schematic view of a second spaced arrangement of diagonal draw buses;
FIG. 7 is a schematic diagram of a horizontal arrangement of an original isolating switch;
fig. 8 is the horizontal layout schematic diagram of the three-position isolation grounding switch of the utility model.
In the drawings: 1. a static side assembly 2, a shell 3, a particle catcher 4, a dynamic side assembly 5, a grounding contact 6, a grounding cover plate 7, an insulating torsion bar 8, an operating mechanism 9, a conductor 101, a first basin insulator 102, a first basin insulator 103, a third basin insulator 11 and a cover plate, 12, a shielding head, 13, a circuit breaker, 14, a current transformer, 15, a three-position isolation grounding switch, 16, a telescopic joint, 17, a main bus, 18, a four-way switching module, 19, a diagonal bus, 20, a three-way switching module, 21, a short branch bus, 22 and an incoming and outgoing line branch bus.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like refer to orientations or positional relationships based on those shown in the drawings, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
The utility model discloses a three station isolation earthing switch especially relates to super high voltage level field, is applicable to super high voltage GIS one and a half oblique pull bus and arranges the operating mode, and quiet side can be in one and a half three interval of working a telephone switchboard in alone or realize sleeve pipe business turn over line and draw bus connection function to one side simultaneously.
The relevant terms are explained first:
three-position isolation grounding switch: the isolation and grounding integrated switchgear can realize three working conditions of closing, opening and grounding through the operation of a mechanism.
The operating mechanism: a device for operating the switch device to make it close or open.
Moving side: the side connected with the operating mechanism is called a movable side.
A static side: the side corresponding to the moving side and not connected with the operating mechanism is called as the static side.
A circuit breaker: the current under the normal loop condition can be closed, carried and disconnected; mechanical switching devices that carry a specified overcurrent for a specified time and are capable of switching current on and off under abnormal circuit conditions (e.g., various short circuit conditions).
A current transformer: under normal use conditions, its secondary current is substantially proportional to the primary current, and its phase difference approaches that of a transformer of zero when the connection method is correct.
Tee joint: a housing of a switchgear has three wire inlet and outlet ports.
Sleeving a sleeve: a structure that can carry and insulate one or more pole conductors through a barrier (e.g., a wall or housing).
Bus bar: factory assembled, insulated conductor supports or spaced conductors containing insulation in ducts, raceways or similar housings.
Breaking: the space between the stationary and the moving side of the switchgear.
A particle trap: a device for collecting or suppressing discharge particles and foreign matters.
One and a half times wiring: the main connection mode of electric equipment is characterized by that three switchgears are series-connected in two groups of main buses, and an inlet and outlet wire is connected between two switchgears.
Arranging the diagonal draw buses: the branch buses connecting the two switch devices adopt an inclined-pulling arrangement mode.
The straight line is arranged: the branch buses connecting the two switch devices adopt a straight-line arrangement mode.
A telescopic joint: the adjusting device used on the bus can finely adjust the angle or the length of the bus.
Referring to fig. 3 and 4, the three-position isolating and grounding switch comprises a static side assembly 1, a shell 2, a particle trap 3, a moving side assembly 4, a grounding contact 5, a grounding cover plate 6, an insulating torsion bar 7, an operating mechanism 8, a conductor 9, a first basin-type insulator 101, a second basin-type insulator 102, a third basin-type insulator 103, a cover plate 11 and a shielding head 12. The static side assembly 1 in fig. 3 and 4 is a general structure, and the difference is that the side of the static side assembly 1 in fig. 3 is blocked by a shielding head 12, a cover plate 11 is additionally arranged on the side of the shell 2, and the upper part of the static side assembly 1 is fixedly connected with a first basin-type insulator 101 through a conductor 9 through a bolt to realize an upper wire outlet mode; in fig. 4, the side of the static side assembly 1 is fixedly connected with the second basin-type insulator 102 through bolts, and the upper part of the static side assembly is connected with the first basin-type insulator 101 in a way of inserting the conductor 9, so that a double-wire-outgoing mode is realized, namely, the static side assembly has the functions of upper wire outgoing and side wire outgoing and is convenient to assemble; the upper end of the movable side assembly 4 of the isolation grounding switch is connected with the operating mechanism 8 through an insulating torsion bar 7, so that three stations of opening, closing and grounding are operated, and the lower end of the isolation grounding switch is connected with the third basin-type insulator 103; the grounding contact 5 is communicated with the grounding cover plate 6, and can realize the grounding of the inner conductor and the shell 2. The utility model discloses a move side main conductive loop and adopt right angle through-flow structure, no matter move side assembly 4 promptly and assemble 1 switch-on with quiet side or with the 5 switch-ons of ground contact, the route of formation is L shape.
The operating mechanism 8 adopts an overhead mode.
The static side assembly and the shell have two outlet modes: when the static side assembly and the shell adopt side outgoing lines, after the static side and the static side are switched on, the lower part incoming line, the movable side assembly 4 and the static side assembly 1 form an L-shaped conductive loop, and when the static side assembly and the shell adopt upper part outgoing lines, after the movable side and the static side are switched on, the lower part incoming line, the movable side assembly 4 and the static side assembly 1 form a Z-shaped conductive loop.
Example 1
In the embodiment, the structure shown in fig. 3 is adopted, the static side assembly 1 is fixedly connected with the first basin-type insulator 101 through the conductor 9, and a single upper current inlet and outlet channel is formed through a wire outlet above the shell 2. This embodiment can be used in the first and third compartments when one and a half times the diagonal bus bars are arranged.
The first and third compartments are arranged as shown in fig. 5, and mainly include a circuit breaker 13, a current transformer 14, a three-position isolation grounding switch 15, a telescopic joint 16, a main bus 17, a four-way switching module 18, a diagonal bus 19, a three-way switching module 20, and a short branch bus 21. The circuit breaker 13 is a single-break circuit breaker, the three-station isolation grounding switch 15 is horizontally arranged, the movable side assembly 4 of the three-station isolation grounding switch 15 is connected with the current transformer 14, the static side assembly 1 is connected with the short branch bus 21 or the expansion joint 16, and when the movable side assembly 4 and the static side assembly 1 are switched on, a Z-shaped through-flow loop is formed inside the isolation grounding switch 15, so that the wire inlet and outlet requirements of the main bus 17 and the diagonal bus 19 can be met respectively.
Example 2
By adopting the structure shown in fig. 4, the side of the static side assembly 1 is fixedly connected with the second basin-type insulator 102, the upper part of the static side assembly is connected with the first basin-type insulator 101 through the conductor 9 in a plugging manner, the basin-type insulators are installed on the side and the upper part of the shell 2 and are used as wire inlet and outlet ports, and a double current channel is formed between the side and the upper part of the shell 2 through the wire outlet port on the side and the wire outlet port on the upper part of the shell 2. This embodiment can be used in the second compartment when one and one half times the diagonal bus bars are arranged.
The second compartment is arranged as shown in fig. 6, and mainly includes a breaker 13, a current transformer 14, a three-position isolation grounding switch 15, a diagonal bus 19, a three-way switching module 20, a short branch bus 21, and an incoming and outgoing branch bus 22. The circuit breaker 13 is a single-break circuit breaker, the three-station isolation grounding switch 15 adopts a horizontal arrangement mode, the movable side assembly 4 of the three-station isolation grounding switch 15 is connected with the current transformer 14, the upper part of the static side assembly 1 is connected with the short branch bus 21, the side of the three-station isolation grounding switch is connected with the incoming and outgoing line branch bus 22, when the movable side assembly 4 and the static side assembly 1 are switched on, a Z-shaped through-flow loop and an L-shaped through-flow loop can be formed inside the isolation grounding switch 15 simultaneously, and the incoming and outgoing line requirements of the oblique-pulling bus 19 and the incoming and outgoing line branch bus 22 can be met simultaneously.
The three-station isolation grounding switch 15 is horizontally arranged in the two embodiments, a fracture is formed between the static side assembly 1 and the dynamic side assembly 4, foreign matters can fall off in the opening and closing process, and at the moment, the foreign matters can be collected and restrained through the particle catcher 3 arranged at the bottom of the shell, so that the foreign matters are prevented from falling on the third basin-type insulator 103 to form a discharge risk point.
Referring to fig. 7 and 8, under the working condition of horizontal arrangement, the original isolating switch only has a side outlet, and when other equipment needs to be installed on the isolating switch, the isolating switch needs to be installed through the three-way switching module, so that the number of the three-way switching modules is more than 20; the distance between the two switches is increased due to the three-way switching module, so that the diagonal bus is lengthened; and the utility model provides a earthing switch is kept apart to three stations can reduce tee bend switching module's input and shorten cable-stay generating line length to one side, reduces product manufacturing cost, the interval integration of being convenient for arrange the installation, have advantages such as the standardized degree of unit module is high, the structure field is compact, fail safe nature height, the whole interval transportation of also being convenient for. The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (8)
1. The three-station isolation grounding switch is characterized by comprising a shell (2), wherein a static side assembly (1), a movable side assembly (4), a grounding contact (5), an insulating torsion bar (7) and a conductor (9) are arranged in the shell (2), the static side assembly (1) is connected with a first basin-type insulator (101) through the conductor (9), and the first basin-type insulator (101) is positioned on the upper side of the shell (2); the movable side assembly (4) is connected with the operating mechanism (8) through an insulating torsion bar (7), and one side of the shell (2) close to the movable side assembly (4) is provided with a grounding contact (5).
2. A three-position isolating earthing switch according to claim 1, characterized in that the side of the static side fitting (1) remote from the dynamic side fitting (4) is connected to a second basin insulator (102).
3. A three-position disconnecting and earthing switch according to claim 2, characterized in that said conductor (9) is plugged with a first basin insulator (101).
4. A three-position isolating earthing switch according to claim 1, characterized in that one side of the static side assembly (1) far away from the dynamic side assembly (4) is blocked by a shielding head (12), a cover plate (11) is arranged outside the shielding head (12), and the cover plate (11) is fixedly connected with the housing (2).
5. A three-position disconnecting and grounding switch according to claim 1, characterized in that said operating mechanism (8) is arranged above the housing (2).
6. A three-position isolating earthing switch according to claim 1, characterized in that a particle trap (3) is provided below the static side fitting (1) and the dynamic side fitting (4).
7. A three-position isolating earthing switch according to claim 6, characterized in that the particle trap (3) is detachably mounted on the bottom surface of the housing (2).
8. A three-position disconnecting and grounding switch according to claim 1, characterized in that the grounding contact (5) is connected with a grounding cover plate (6), and the grounding cover plate (6) is installed outside the housing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221807031.4U CN217768203U (en) | 2022-07-13 | 2022-07-13 | Three-station isolation grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221807031.4U CN217768203U (en) | 2022-07-13 | 2022-07-13 | Three-station isolation grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217768203U true CN217768203U (en) | 2022-11-08 |
Family
ID=83874294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221807031.4U Active CN217768203U (en) | 2022-07-13 | 2022-07-13 | Three-station isolation grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217768203U (en) |
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2022
- 2022-07-13 CN CN202221807031.4U patent/CN217768203U/en active Active
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