CN215933463U - Isolation grounding combined switch for gas insulated switchgear and application equipment - Google Patents
Isolation grounding combined switch for gas insulated switchgear and application equipment Download PDFInfo
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- CN215933463U CN215933463U CN202121864467.2U CN202121864467U CN215933463U CN 215933463 U CN215933463 U CN 215933463U CN 202121864467 U CN202121864467 U CN 202121864467U CN 215933463 U CN215933463 U CN 215933463U
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Abstract
The utility model discloses an isolation grounding combination switch for gas insulated switchgear and application equipment. In addition, at least three ports in the four ports of the tank body are vertical in pairs, and the axes of the three-phase isolation grounding switches are coplanar, so that the size of the tank body can be miniaturized, the structure of the isolation grounding combination switch for the gas insulated switchgear is optimized, and the isolation grounding combination switch for the gas insulated switchgear can be applied to the technical field of medium-voltage inflatable switch cabinets.
Description
Technical Field
The utility model relates to the technical field of power equipment, in particular to an isolation grounding combination switch for gas insulated switchgear and application equipment.
Background
In the field of power equipment, an isolation grounding combination switch for gas insulated switchgear cannot be applied to the technical field of medium-voltage gas-filled switchgear due to the consideration of environmental protection and insulating performance.
Therefore, how to optimize the structure on the premise of meeting the environmental protection property becomes a technical problem to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides an isolation and grounding combination switch for a gas insulated switchgear and an application device thereof, so as to optimize the structure on the premise of meeting the environmental protection.
In order to achieve the purpose, the utility model provides the following technical scheme:
an isolation grounding combination switch for gas insulated switchgear comprises a tank body in a cylindrical pressure-bearing structure, a bus and an isolation grounding switch, wherein the bus and the isolation grounding switch are arranged in the tank body; the tank body is provided with four ports, at least three ports of the four ports are vertical in pairs, and the bus penetrates through and is connected with a first port and a second port of the four ports; the isolation grounding switch is a three-phase isolation grounding switch, the outgoing line of each phase of the isolation grounding switch is arranged at the third port of the four ports, and the grounding contact seat of each phase of the isolation grounding switch is fixedly arranged at the fourth port of the four ports; the axes of the three phases of the isolation grounding switches are coplanar.
Preferably, the tank body comprises a longitudinal portion, a transverse portion and a vertical portion which are vertically communicated with each other, the first port and the second port are arranged at two ends of the transverse portion, the third port is arranged at the vertical portion, and the fourth port is arranged at the longitudinal portion.
Preferably, each phase of the isolation grounding switch comprises a grounding contact seat, a middle contact seat, a static contact seat and a moving contact, one end of the static contact seat is electrically connected with and supported by the corresponding bus, the moving contact is in driving connection with the driving part through a driving part, the driving part is arranged at a fourth port, the outgoing line is connected with the middle contact seat and is connected with the third port through a first partition insulator, and the driving part, the moving contact, the grounding contact seat, the middle contact seat and the static contact seat are coaxially arranged and are coplanar with the central line of the fourth port.
Preferably, the outgoing line of each phase of the isolation grounding switch comprises a first end part, a first middle part and a second end part which are in circular arc transition connection in sequence, the first end part is connected with the corresponding middle contact seat, and the second end part is connected with the third port; the axes of the first middle parts of the outgoing lines of the three-phase isolation grounding switches are all positioned on the first surface; the first face is parallel to a second face through a centerline of the three port, the second face being perpendicular to a centerline of the fourth port; the first face is arranged in a direction near the fourth port, with the second face as a boundary.
Preferably, the connection positions of the second end of the outgoing line and the third port in the three-phase isolation grounding switch are arranged in a triangle.
Preferably, the triangle is an equilateral triangle.
Preferably, the bus is a three-phase bus, each phase of the bus comprises a third end part, a second middle part and a fourth end part which are in circular arc transition connection in sequence, the third end part is connected with the first port through a second partition insulator, and the fourth end part is connected with the second port through a third partition insulator; the axes of the second middle parts of the three-phase buses are all positioned on the third surface; the third face is parallel to a fourth face through a centerline of the first port, the fourth face is perpendicular to a centerline of the fourth port, and a centerline of the second port is located on the fourth face; and the third surface is arranged in a direction far away from the fourth port by taking the fourth surface as a boundary.
Preferably, the third end parts of the three-phase buses are arranged in a first triangle at the connection position of the first port; and the fourth end parts of the three phases of the buses are arranged in a second triangle at the connecting position of the second port.
Preferably, the third end portion and the fourth end portion are both arc-shaped structures.
Preferably, the first triangle and the second triangle are equilateral triangles.
Preferably, the second partition insulator and the third partition insulator are basin-type insulators.
Preferably, one end of the bus is in sliding connection with the shielding cover on the insert of the concave surface of the third partition insulator through the first transition conductor, and the other end of the bus is fixed on the insert of the convex surface of the second partition insulator.
The utility model also discloses application equipment which uses any one of the isolation grounding combination switches for the gas insulated switchgear.
According to the technical scheme, the bus and the isolation grounding switch are integrated in the tank body with the cylindrical pressure-bearing structure, and the tank body with the cylindrical pressure-bearing structure is high in high-pressure resistance, so that the isolation grounding combination switch for the gas insulated switchgear has the possibility of selecting high-pressure air as insulating gas, and the environmental protection performance of the device is guaranteed. Because at least three ports in the four ports of the tank body are vertical in pairs, the size of the tank body can be miniaturized, the structure of the isolation grounding combination switch for the gas insulated switchgear is optimized, and the isolation grounding combination switch for the gas insulated switchgear can be applied to the technical field of medium-voltage inflatable switch cabinets. In addition, the isolation grounding switch is a three-phase isolation grounding switch, the axes of the three-phase isolation grounding switch are coplanar, the structure of the isolation grounding combined switch for the gas insulated switchgear can be further optimized, and the size of the tank body can be further miniaturized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic axial-side perspective view of an isolation and grounding combination switch for gas-insulated switchgear according to an embodiment of the present invention, which mainly reflects a tank body;
fig. 2 is a sectional structural view of an isolation grounding combination switch for a gas insulated switchgear according to an embodiment of the present invention;
fig. 3 is a schematic axial-side perspective view of an isolation and grounding combination switch for a gas insulated switchgear according to an embodiment of the present invention after a tank and a flange are hidden;
fig. 4 is a rear view of a concealed tank of an isolation grounding combination switch for a gas insulated switchgear according to an embodiment of the present invention.
Wherein 100 is a tank body, 200 is a bus, 300 is an isolation grounding switch, and 400 is a driving piece;
101 is a first port, 102 is a second port, 103 is a third port, and 104 is a fourth port; a third end portion 201, a second intermediate portion 202, and a fourth end portion 203; 301 is an outgoing line, 302 is a moving contact, 303 is a grounding contact seat, 304 is a middle contact seat, 305 is a static contact seat, 306 is a transmission part, and 401 is a motor;
1011 is a second separator insulator, 1021 is a third separator insulator, 1031 is a first separator insulator, 1041 is a flange cover; 3011 is a first end, 3012 is a first middle part, 3013 is a second end, 3061 is a lead screw, 3062 is a fixing piece;
100a is a transverse portion, 100b is a longitudinal portion, and 100c is a vertical portion; 200a is a first transition conductor, 200b is a second transition conductor; 1011a is convex and 1021a is concave.
Detailed Description
Technical term interpretation:
a three-position switch: the switch element has three working positions of conducting, isolating and grounding.
Inflatable cubical switchboard: the switch cabinet is characterized in that primary conductive elements such as a circuit breaker, a disconnecting switch, a grounding switch and a bus are sealed in one or more welded metal box bodies and filled with insulating gas with certain pressure.
Round can type structure: the sealed container which is cast by adopting aluminum alloy and is provided with primary conductive elements such as a circuit breaker, a disconnecting switch, a grounding switch, a bus and the like bears insulating gas with certain pressure.
The square box type structure: the metal sealing container is a rectangular or similar metal sealing container formed by welding stainless steel plates.
Insulating gas: and a gas medium having an insulating function, such as SF6, air, nitrogen, or the like.
Currently, in the technical field of 40.5kV medium voltage gas-filled switches, a mainstream product adopts SF6 as an insulating medium and a vacuum arc-extinguishing chamber as a box-type metal closed structure of a breaking element. From the development trend of environment-friendly substitute products, it is the most feasible and promising technical solution to adopt air (dry air, clean air) to replace SF6 as the insulating medium and adopt the vacuum interrupter as the breaking element. However, since the insulation performance of air is only about one third of that of SF6, the utility model has found that when the pressure of the insulating gas is increased, the insulation performance is enhanced. The SF6 gas pressure of existing 40.5kV gas-filled switchgears is typically 1.2 to 1.4bar (absolute pressure), and if SF6 is directly replaced by air, the size of the switchgear can be very large. Therefore, using air as the insulating gas, only the charge pressure of the air can be increased, while maintaining the requirements comparable to the size of SF6 products. However, in the prior art, the gas tank has a square box structure welded by stainless steel plates, and the gas tank cannot bear excessively high inflation pressure (generally, when the absolute pressure of gas exceeds 2bar, the square box can be seriously deformed and even leaks gas). Although the deformation of the air box can be improved by increasing the number of the reinforcing ribs, the method causes cost increase, complex processing and manufacturing, and poor appearance, and the hidden trouble caused by the deformation of the air box cannot be avoided. Therefore, the utility model discloses the people think that at 40.5kV middling pressure inflatable switch technical field, square box formula structural scheme is not suitable for the air as insulating medium.
The circular tank type shell commonly used in the technical field of high-pressure inflatable switches is adopted as a metal shell, so that the problem of bearing high gas pressure can be well solved. However, the switchgear using the canister type housing has a flange structure for connecting the incoming and outgoing line portions to the basin-type insulator, and thus occupies a certain size. The design dimensions of the switch components available for the canister housing will therefore be less efficient than the use of a box-type container of the same dimensions, which conflicts with the compactness requirement of a 40.5kV medium voltage gas-filled switch. In addition, users and operation and maintenance personnel of the traditional medium-voltage switch cabinet can accept the round tank type shell more easily, and the inflation pressure is not too high, which is contrary to the insulation requirement of the 40.5kV medium-voltage inflatable switch.
The technical core of the utility model based on the above factors is to provide the isolation grounding combined switch for the gas insulated switchgear and the application equipment, so that the structure is optimized on the premise of meeting the environmental protection property, and the isolation grounding combined switch for the gas insulated switchgear can be applied to the technical field of 40.5kV medium-voltage inflatable switches.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, an isolation and grounding combination switch for a gas insulated switchgear according to some embodiments of the present invention may include a tank 100 having a cylindrical pressure-bearing structure, a bus bar 200, and an isolation and grounding switch 300, wherein the bus bar 200 and the isolation and grounding switch 300 are disposed in the tank 100; four ports are arranged on the tank body 100, at least three ports of the four ports are vertical in pairs, the bus 200 is connected with a first port 101 and a second port 102 of the four ports in a penetrating manner, the isolation grounding switch 300 is a three-phase isolation grounding switch, an outgoing line of each isolation grounding switch 300 is arranged at a third port 103 of the four ports, and a grounding contact base 303 of each isolation grounding switch 300 is arranged at a fourth port 104 of the four ports; the axes of the three-phase isolation grounding switch 300 are coplanar.
According to the isolation grounding combination switch for the gas insulated switchgear, the bus 200 and the isolation grounding switch 300 are integrated in the tank body 100 with the cylindrical pressure-bearing structure, and the tank body 100 with the cylindrical pressure-bearing structure is high in high-pressure resistance, so that the isolation grounding combination switch for the gas insulated switchgear has the possibility of selecting high-pressure air as insulating gas, and the environmental protection performance of the device is guaranteed. In addition, at least three ports of the four ports of the tank body 100 are vertical to each other, so that the space utilization rate of the tank body 100 is improved, the size of the tank body 100 can be miniaturized, the structure of the isolation grounding combination switch for the gas insulated switchgear is optimized, and the isolation grounding combination switch for the gas insulated switchgear can be applied to the technical field of medium-voltage inflatable switch cabinets.
In addition, the isolation earthing switch 300 is a three-phase isolation earthing switch, and the axes of the three-phase isolation earthing switch are coplanar, so that the structure of the isolation earthing combined switch for the gas insulated switchgear can be further optimized, and the size of the tank body 100 can be further miniaturized.
The tank 100 serves to support the bus bar 200 and the disconnecting/grounding switch 300 and to seal insulating gas, and in order to improve the high pressure resistance of the tank 100, the tank 100 according to the embodiment of the present invention has a cylindrical pressure-bearing structure, so that the pressure of the insulating gas filled in the tank 100 can be increased without damaging the tank 100.
The tank body 100 is provided with four ports, at least three ports of the four ports are vertical to each other in pairs, for convenience of understanding, a three-dimensional rectangular coordinate system is established, the first port 101 is located on an o-x axis, the third port 103 is located on an o-y axis, the fourth port 104 is located on an o-z axis, the first port 101, the third port 103 and the fourth port 104 are vertical to each other in pairs, and the second port 102 and the first port 101, the third port 103 and/or the fourth port 104 are arranged at any angle. The size of the entire can 100 does not exceed the distance between the first port 101 and the second port 102 when viewed from the o-x axis, the size of the entire can 100 does not exceed the distance between the third port 103 and the second port 102 when viewed from the o-y axis, and the size of the entire can 100 does not exceed the distance between the fourth port 104 and the second port 102 when viewed from the o-z axis. Therefore, the can 100 is made more compact in size.
In some embodiments of the present invention, the first port 101, the third port 103 and the fourth port 104 of the tank 100 are perpendicular to each other, the second port 102, the third port 103 and the fourth port 104 are perpendicular to each other, and the first port 101 and the second port 102 are coaxially arranged. For convenience of understanding, a three-dimensional rectangular coordinate system is established, wherein the first port 101 and the second port 102 are located on an o-x axis, the third port 103 is located on an o-y axis, and the fourth port 104 is located on an o-z axis. The size of the entire tank 100 is equal to the distance between the first port 101 and the second port 102 when viewed from the o-x axis, the size of the entire tank 100 does not exceed the distance between the third port 103 and the tank wall opposite to the third port 103 when viewed from the o-y axis, and the size of the entire tank 100 does not exceed the distance between the fourth port 104 and the tank wall opposite to the fourth port 104 when viewed from the o-z axis, so that the size of the tank 100 is more compact.
In some embodiments of the present invention, the tank 100 may include a longitudinal portion 100b, a transverse portion 100a, and a vertical portion 100c, which are vertically connected in pairs, and the first port 101 and the second port 102 are disposed at both ends of the transverse portion 100a, the third port 103 is disposed at the vertical portion 100c, and the fourth port 104 is disposed at the longitudinal portion 100 b. For ease of understanding, a three-dimensional rectangular coordinate system is established in which the lateral portion 100a extends in the direction of the o-x axis, the vertical portion 100c extends in the direction of the o-y axis, and the longitudinal portion 100b extends in the direction of the o-z axis, such that the lateral portion 100a, the vertical portion 100c, and the longitudinal portion 100b are perpendicular to each other.
To further optimize the structure of the can body 100, in some embodiments of the present invention, the transverse portion 100a, the vertical portion 100c and the longitudinal portion 100b are vertically arranged on a two-by-two basis, and the vertical portion 100c is located at a transition region between the transverse portion 100a and the longitudinal portion 100 b. So configured, the can 100 can be made more compact in size.
In some embodiments of the present invention, each isolated phase grounding switch 300 includes a grounding contact seat 303, a middle contact seat 304, a stationary contact seat 305 and a movable contact 302, the movable contact 302 is drivingly connected to a driving member 400 through a transmission member 306, the driving member 400 is disposed on the fourth port 104, and the outgoing line 301 is connected to the middle contact seat 304 and connected to the third port 103 through a first partition insulator 1031; one end of the stationary contact 305 is electrically connected to and supported by the corresponding bus bar 200, and the transmission member 306, the movable contact 302, the ground contact 303, the intermediate contact 304, and the stationary contact 305 are coaxially arranged and coplanar with the center line of the fourth port 104. Therefore, the isolation grounding switch 300 in the embodiment of the present invention is a linear driving type of the driving member 400.
The movable contact 302, the grounding contact 303, the middle contact 304 and the stationary contact 305 are described in detail below:
the ground contact is internally provided with a contact finger, a contact piece or a spiral contact. The grounding contact bases 303 of the three-phase isolating grounding switch 300 are respectively a first grounding contact base 303, a second grounding contact base 303 and a third grounding contact base 303.
The first ground contact 303, the second ground contact 303, and the third ground contact 303 are fixed to the flange cover 1041 of the fourth port 104. In one embodiment of the present solution, the first ground contact 303, the second ground contact 303 and the third ground contact 303 are coplanar with the center line O1 of the fourth port 104.
The first ground contact base 303, the second ground contact base 303, and the third ground contact base 303 may be directly connected to the flange cover 1041, or may be connected to the flange cover 1041 through a connecting member. In the embodiment that the first ground contact base 303, the second ground contact base 303 and the third ground contact base 303 are connected with the flange cover 1041 through the connecting pieces, the connecting pieces include a connecting column and a connecting piece which are coaxially arranged with the flange cover 1041, the surface where the connecting piece is located is perpendicular to the axis of the connecting column, the connecting pieces are uniformly distributed along the circumferential direction of the connecting column, one end of the connecting piece is connected with the connecting column, and the other end of the connecting piece is connected with the first ground contact base 303, the second ground contact base 303 or the third ground contact base 303.
The middle contact base 304 is connected with the outgoing line 301, a moving channel is formed in the middle along the axial direction, a contact finger, a contact piece or a spiral contact is arranged in the moving channel, and the moving contact 302 is arranged in the moving channel and can slide in the extension direction of the slide way. The functional positions of the moving contact 302 are a first position, a middle position and a second position, and the middle position is located between the first position and the second position; when the movable contact 302 is located at the first position, the middle contact 304 is electrically connected with the grounding contact 303 through the movable contact 302, and the grounding position is the current position; when the movable contact 302 is located at the second position, the middle contact 304 is electrically connected to the stationary contact 305 through the movable contact 302, which is at the on position; when the movable contact 302 is in the neutral position, the middle contact 304 is disconnected from the ground contact 303 and the stationary contact 305, which is an isolation position. The movable contact 302 cannot contact the grounding contact 303 and the stationary contact 305 at the same time.
The middle contact bases 304 of the three-phase isolating ground switch 300 are respectively a first middle contact base 304, a second middle contact base 304 and a third middle contact base 304, wherein the first middle contact base 304, the second middle contact base 304 and the third middle contact base 304 are coplanar with the central line O1 of the fourth port 104.
The stationary contact 305 is connected to the corresponding bus bar 200, and contact fingers, contact pieces, or spiral contacts are provided inside the connection portion of the stationary contact 305. The stationary contact bases 305 of the three-phase isolating grounding switch 300 are respectively a first stationary contact base 305, a second stationary contact base 305 and a third stationary contact base 305; the first stationary contact 305, the second stationary contact 305, and the third stationary contact 305 are coplanar about a centerline O1 of the fourth port 104.
The driving member 400 drives the movable contact 302 to move linearly through the transmission member 306 and move among the first position, the middle position and the second position, so as to realize the switching among the three stations. The driving member 400 is a linear motor or a motor 401, and when the driving member 400 is the motor 401, the motor 401 outputs a rotational motion, and the rotational motion output by the motor 401 is converted into a linear motion by the transmission member 306. The structure capable of converting the rotational motion into the linear motion can be understood as the transmission component 306, for example, the transmission component can be a screw nut transmission mechanism, specifically, the transmission component includes a screw 3061 and a fixing component 3062, wherein one end of the screw 3061 is in transmission connection with the motor 401, and is fixed on the flange cover 1041 through the fixing component 3062, and passes through the grounding contact base 303 and the intermediate contact base 304 in sequence to be connected with the movable contact 302, and the movable contact 302 performs the linear motion under the action of the screw 3061.
For convenience of description, the transmission members 306 are a first linear transmission member, a second linear transmission member and a third linear transmission member, respectively, and the screw rods 3061 are a first screw rod, a second screw rod and a third screw rod, respectively.
The first grounding contact base 303, the first middle contact base 304 and the first stationary contact base 305 of the three-phase isolating grounding switch 300 are coaxially arranged, the second grounding contact base 303, the second middle contact base 304 and the second stationary contact base 305 are coaxially arranged, and the third grounding contact base 303, the third middle contact base 304 and the third stationary contact base 305 are coaxially arranged. The second grounding contact seat 303 and the third grounding contact seat 303 are located on the same plane, the plane is parallel to the flange cover 1041, the first grounding contact seat 303, the second grounding contact seat 303 and the third grounding contact seat 303 are linearly arranged relative to the axis of the flange cover 1041, the occupied space of the structure formed by the first grounding contact seat 303, the second grounding contact seat 303 and the third grounding contact seat 303 is smaller, the size of the grounding contact seat 303 is favorably reduced, and therefore the size of the tank body 100 corresponding to the position of the grounding contact seat 303 is reduced.
In some embodiments of the present invention, the outgoing line 301 of each phase isolating grounding switch 300 includes a first end portion 3011, a first middle portion 3012 and a second end portion 3013, which are connected in a circular arc transition manner in sequence, the first end portion 3011 is connected to the corresponding middle contact base 304, and the second end portion 3013 is connected to the third port 103; the axes of the first middle portions 3012 of the outgoing lines 301 of the three-phase isolation earthing switch 300 are all located on the first plane γ. Along the extending direction of the first middle part 3012 of the outgoing line 301 of the three-phase isolation grounding switch 300, the effective occupied area of the first middle part 3012 of the outgoing line 301 of the three-phase isolation grounding switch 300 is reduced, so that the effective occupied space of the outgoing line 301 of the three-phase isolation grounding switch 300 is reduced, and therefore, the size of the tank body 100 can be designed to be more compact.
On the basis of some of the above embodiments, the first plane γ is parallel to a second plane δ passing through the center line of the three ports, the second plane δ being perpendicular to the center line O1 of the fourth port 104. The distance between the first face γ and the tank wall of the vertical portion 100c is minimized, thereby further optimizing the arrangement of the outgoing lines 301 and improving the utilization of the internal space of the vertical portion 100 c.
On the basis of some of the above embodiments, the first plane γ is arranged towards the direction close to the fourth port 104, bounded by the second plane δ. That is, the first intermediate portion 3012 of the three-phase outgoing line 301 is closer to the tank wall at the longitudinal portion 100b near the fourth port 104, thereby further improving the utilization ratio of the internal space of the longitudinal portion 100 b.
In some embodiments of the present invention, the connection positions of the second end 3013 of the outgoing line 301 and the third port 103 in the three-phase isolating ground switch 300 are arranged in a triangle, so that the diameter of the third port 103 can be reduced on the premise of meeting the wiring requirement. Furthermore, the connection positions of the second end 3013 of the outgoing line 301 in the three-phase isolation grounding switch 300 and the third port 103 are arranged in an equilateral triangle, so that the diameter of the third port 103 can be further reduced on the premise of meeting the wiring requirement.
The outgoing line 301 is described in detail below:
one end of the outgoing line 301 is connected with the third port 103 through the first partition insulator 1031, the other end of the outgoing line 301 is connected with the middle contact base 304, and the connecting part of the outgoing line 301 and the first partition insulator 1031 is in arc transition connection. The outgoing lines 301 of the three-phase isolation grounding switch 300 are a first outgoing line, a second outgoing line and a third outgoing line. The axis of the first middle portion 3012 of the first outgoing line, the axis of the first middle portion 3012 of the second outgoing line, and the axis of the first middle portion 3012 of the third outgoing line are located on the first plane γ.
In some embodiments of the present invention, the bus 200 may be a three-phase bus 200, when the bus 200 is a three-phase bus 200, each phase of the bus 200 includes a third end portion 201, a second middle portion 202, and a fourth end portion 203, which are connected in an arc transition manner in sequence, where the third end portion 201 is connected to the first port 101 through a second partition insulator 1011, and the fourth end portion 203 is connected to the second port 102 through a third partition insulator 1021; and the axes of the second intermediate portions 202 of the three-phase bus bars 200 are all located on the third face α. Since the second middle portion 202 of the three-phase bus bar 200 is located on the third surface α, the effective area occupied by the three-phase bus bar 200 is reduced along the extending direction of the three-phase bus bar 200, so that the arrangement of the bus bar 200 is optimized, and the effective occupied space of the bus bar 200 is reduced, and therefore, the tank body 100 can be designed to be more compact in size.
Embodiments are possible in which the angle between the third surface α and the center line O1 of the fourth port 104 is 0 ° to 90 °. When the included angle is 90 °, the third face α is parallel to a fourth face β passing through the center line of the first port 101, the fourth face β is perpendicular to the center line O1 of the fourth port 104, and the center line of the second port 102 is located on the fourth face β. So set up, the distance between the third face α and the tank wall of the transverse portion 100a is minimal, thereby further optimizing the arrangement of the bus bar 200, improving the utilization of the internal space of the transverse portion 100 a.
On the basis of the above embodiments, the third face α is arranged away from the fourth port 104, with the fourth face β as a boundary; that is, the second intermediate portion 202 of the three-phase bus bar 200 is closer to the tank wall of the lateral portion 100a, thereby further improving the utilization ratio of the internal space of the lateral portion 100 a.
In some embodiments of the present invention, the third end portions 201 of the three-phase bus 200 are arranged in a triangular shape at the connection position of the first port 101, and on the premise that the connection requirement is satisfied, the diameter of the first port 101 can be reduced, and the diameter of the second partition insulator 1011 disposed at the first port 101 can also be reduced; and/or the fourth end 203 of the three-phase bus 200 is arranged in a triangular shape at the connection position of the second port 102, so that the diameter of the second port 102 can be reduced on the premise of meeting the wiring requirement, and the diameter of the third partition insulator 1021 arranged at the second port 102 can also be reduced.
Further, the third end portions 201 of the three-phase bus 200 are arranged in an equilateral triangle at the connection position of the first port 101, so that the diameter of the first port 101 can be further reduced on the premise that the wiring requirement is met, and the diameter of the second partition insulator 1011 arranged at the first port 101 can also be further reduced; and/or the fourth end 203 of the three-phase bus 200 is arranged in an equilateral triangle at the connection position of the second port 102, so that the diameter of the second port 102 can be further reduced on the premise of meeting the wiring requirement, and the diameter of the third partition insulator 1021 arranged at the second port 102 can also be further reduced.
The three-phase bus 200 is described in detail below:
the three-phase bus 200 is a first bus, a second bus, and a third bus, respectively, and third end portions 201 of the first bus, the second bus, and the third bus are electrically connected to a second partition insulator 1011, and fourth end portions 203 of the first bus, the second bus, and the third bus are electrically connected to a third partition insulator 1021.
The axis of the second intermediate portion 202 of the first busbar, the axis of the second intermediate portion 202 of the second busbar, and the axis of the second intermediate portion 202 of the third busbar are located within the third surface α; the third end 201 of the first busbar is electrically connected to the third bulkhead insulator 1021 via a first transition conductor 200a, the third end 201 of the second busbar is electrically connected to the third bulkhead insulator 1021 via a second transition conductor 200b, and the third end 201 of the third busbar is electrically connected to the third bulkhead insulator 1021 via a third transition conductor.
The second spacer insulator 1011 and the third spacer insulator 1021 may be basin-type insulators. One end of the bus bar 200 is slidably connected to the shield on the insert of the concave surface 1021a of the third insulator 1021 through the first transition conductor 200a, and the other end of the bus bar 200 is fixed to the insert of the convex surface 1011a of the second insulator 1011. So set up, when installing bus 200 for there is certain adjustable space between second baffle insulator 1011 and the third baffle insulator 1021, thereby makes things convenient for bus 200's installation.
It should be noted that, by optimizing the size of the isolated grounding combination switch for the gas insulated switchgear, the isolated grounding combination switch for the gas insulated switchgear can be applied to the technical field of 40.5kV medium voltage gas-filled switches, but the isolated grounding combination switch for the gas insulated switchgear of the present invention can be applied not only to the technical field of 40.5kV medium voltage gas-filled switches, but also to the technical field of gas-filled switches of other voltage classes.
In some embodiments of the utility model, there is also disclosed a use device using any of the above-described isolation grounding combination switches for gas-insulated switchgear. Since the isolation grounding combination switch for the gas insulated switchgear has the above effects, the isolation grounding combination switch for the gas insulated switchgear also has corresponding effects, and the description is omitted here.
It should be noted that, for the convenience of description, only the portions relevant to the present invention of the related application are shown in the drawings. The embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be understood that "system", "apparatus", "unit" and/or "module" as used herein is a method for distinguishing different components, elements, parts or assemblies at different levels. However, other words may be substituted by other expressions if they accomplish the same purpose.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. An element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Flow charts are used herein to illustrate operations performed by systems according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the various steps may be processed in reverse order or simultaneously. Meanwhile, other operations may be added to the processes, or a certain step or several steps of operations may be removed from the processes.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An isolation grounding combination switch for gas insulated switchgear is characterized by comprising a tank body in a cylindrical pressure-bearing structure, a bus and an isolation grounding switch, wherein the bus and the isolation grounding switch are arranged in the tank body; the tank body is provided with four ports, at least three ports of the four ports are vertical in pairs, and the bus penetrates through and is connected with a first port and a second port of the four ports; the isolation grounding switch is a three-phase isolation grounding switch, the outgoing line of each phase of the isolation grounding switch is arranged at the third port of the four ports, and the grounding contact seat of each phase of the isolation grounding switch is fixedly arranged at the fourth port of the four ports; the axes of the three phases of the isolation grounding switches are coplanar.
2. The isolated grounding combination switch for gas insulated switchgear according to claim 1, wherein said tank comprises a longitudinal portion, a transverse portion and a vertical portion which are vertically connected in pairs, said first port and said second port being disposed at both ends of said transverse portion, said third port being disposed at said vertical portion, and said fourth port being disposed at said longitudinal portion.
3. The disconnecting and grounding combination switch for a gas insulated switchgear according to claim 1, wherein each phase of said disconnecting and grounding switch comprises a grounding contact base, an intermediate contact base, a stationary contact base and a movable contact, one end of said stationary contact base is electrically connected to and supported by a corresponding said bus, said outgoing line is connected to said intermediate contact base and connected to said third port through a first partition insulator, said movable contact is drivingly connected to a driving member through a driving member, said driving member is disposed at a fourth port, and said driving member, said grounding contact base, said intermediate contact base, said stationary contact base and said movable contact are coaxially disposed and coplanar with a center line of said fourth port.
4. The disconnecting and grounding combined switch for the gas insulated switchgear according to claim 3, wherein the outgoing line of each phase of said disconnecting and grounding switch comprises a first end portion, a first middle portion and a second end portion, which are connected in a circular arc transition manner in sequence, said first end portion is connected with the corresponding said middle contact seat, and said second end portion is connected with said third port; the axes of the first middle parts of the outgoing lines of the three-phase isolation grounding switches are all positioned on the first surface; the first face is parallel to a second face through a centerline of the three port, the second face being perpendicular to a centerline of the fourth port; the first face is arranged in a direction near the fourth port, with the second face as a boundary.
5. The disconnecting and grounding combination switch for gas insulated switchgear according to claim 3, wherein the connection positions of the second ends of the outgoing lines and the third ports in the three-phase disconnecting and grounding switch are arranged in a triangle.
6. The isolated grounding combination switch for gas-insulated switchgear, according to claim 5, characterized in that said triangle is an equilateral triangle.
7. The disconnecting and grounding combination switch for gas insulated switchgear according to claim 1, wherein said bus bars are three-phase bus bars, each phase of said bus bars comprises a third end portion, a second middle portion and a fourth end portion, which are connected in turn by an arc transition, said third end portion being connected to said first port through a second barrier insulator, and said fourth end portion being connected to said second port through a third barrier insulator; the axes of the second middle parts of the three-phase buses are all positioned on the third surface; the third face is parallel to a fourth face through a centerline of the first port, the fourth face is perpendicular to a centerline of the fourth port, and a centerline of the second port is located on the fourth face; the fourth face is used as a boundary, and the third face is arranged in a direction far away from the fourth port; the third end parts of the three-phase buses are arranged in a triangular shape at the connecting position of the first port; and the fourth end parts of the three-phase buses are arranged in a triangular shape at the connecting position of the second port.
8. The isolated grounding combination switch for gas-insulated switchgear, according to claim 7, wherein said second and third spacer insulators are basin insulators.
9. The disconnecting and grounding combination switch for gas insulated switchgear according to claim 8, wherein one end of said bus bar is slidably connected to said shield on said concave insert of said third barrier insulator through a first transition conductor, and the other end of said bus bar is fixed to said convex insert of said second barrier insulator.
10. A utilization device, characterized in that it uses an isolating and grounding combination switch for a gas-insulated switchgear apparatus according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121864467.2U CN215933463U (en) | 2021-08-10 | 2021-08-10 | Isolation grounding combined switch for gas insulated switchgear and application equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121864467.2U CN215933463U (en) | 2021-08-10 | 2021-08-10 | Isolation grounding combined switch for gas insulated switchgear and application equipment |
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| CN215933463U true CN215933463U (en) | 2022-03-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115498511A (en) * | 2021-08-10 | 2022-12-20 | 西安高压电器研究院股份有限公司 | Device integrating bus and isolation grounding switch and application equipment |
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2021
- 2021-08-10 CN CN202121864467.2U patent/CN215933463U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115498511A (en) * | 2021-08-10 | 2022-12-20 | 西安高压电器研究院股份有限公司 | Device integrating bus and isolation grounding switch and application equipment |
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Address after: No.18, north section of West 2nd Ring Road, Lianhu District, Xi'an City, Shaanxi Province, 710077 Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: No.18, north section of West 2nd Ring Road, Lianhu District, Xi'an City, Shaanxi Province, 710077 Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |
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