CN119518499A - Switch cabinet - Google Patents
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- CN119518499A CN119518499A CN202411636019.5A CN202411636019A CN119518499A CN 119518499 A CN119518499 A CN 119518499A CN 202411636019 A CN202411636019 A CN 202411636019A CN 119518499 A CN119518499 A CN 119518499A
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Abstract
本发明属于配电开关设备技术领域，具体涉及一种开关柜。本发明的开关柜，通过将主母线组件、隔离静触头构件、三工位开关、真空灭弧室构件和绝缘拉杆分别安装在支架上，从而提高开关柜内部结构的集成度，便于主母线组件、隔离静触头构件、三工位开关、真空灭弧室构件和绝缘拉杆可以随支架一同安装在柜壳内，简化了开关柜的安装工艺，方便产品生产制造。另外，电缆母线布置在柜壳的左右两侧，很好地节约柜壳高度尺寸空间。
The present invention belongs to the technical field of power distribution switchgear, and specifically relates to a switch cabinet. The switch cabinet of the present invention improves the integration of the internal structure of the switch cabinet by installing the main busbar assembly, the isolating static contact component, the three-position switch, the vacuum arc chamber component and the insulating pull rod on the bracket respectively, so that the main busbar assembly, the isolating static contact component, the three-position switch, the vacuum arc chamber component and the insulating pull rod can be installed in the cabinet shell together with the bracket, which simplifies the installation process of the switch cabinet and facilitates product manufacturing. In addition, the cable busbar is arranged on the left and right sides of the cabinet shell, which saves the height dimension space of the cabinet shell well.
Description
Technical Field
The invention belongs to the technical field of power distribution switch equipment, and particularly relates to a switch cabinet.
Background
In the distribution switchgear, the circuit breaker switch, the isolating switch and the grounding switch are matched to control a circuit, and in the conventional distribution switchgear, the circuit breaker switch, the isolating switch and the grounding switch are of independent structures and are not integrally designed. Such as breaker switches VS1, VD4, ZN28, disconnector GN19, grounding switch JN15, etc., are all independent individuals. Traditional switchgear is through the design of shell with the three station switches (circuit breaker switch, isolator, earthing switch) of a plurality of function switch together pieced together, realizes whole distribution switchgear's function and performance. The breaker switch adopts a handcart type structure, achieves the insulation performance of the switch equipment by adopting an epoxy resin solid insulation mode, and is a permanent accident once the insulation is destroyed, and the insulation cannot be recovered. The advantage of a switchgear with several functional units assembled together is that the replaceable components are easier to find during maintenance, but the external dimensions are larger, which requires a larger installation space.
The three-position switch integrates the functions of the isolating switch and the grounding switch, and is completed by one knife switch, so that mechanical locking can be realized, and the main loop is prevented from being electrified to be in a grounding state. Besides the realization function, the three-station switch is applied to the power distribution switchgear, and the overall dimension of the power distribution switchgear can be effectively reduced. However, the existing distribution switch equipment using the three-station switch still has the problems of low integration level, large occupied installation space, complex structure and more consumable materials.
Disclosure of Invention
The invention aims to solve the problems of low integration level, large occupied space and the like of the existing distribution switch equipment, and provides a switch cabinet which integrates a three-station switch, a vacuum arc-extinguishing chamber component and a main bus assembly on a bracket and is convenient to manufacture.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The switch cabinet comprises a cabinet shell, a conductive component and a three-station switch, wherein the three-station switch is arranged in the switch chamber, the cabinet shell is provided with the switch chamber and the cable chamber which are arranged from top to bottom, the conductive component is arranged in the switch chamber and comprises a bracket, a main bus component, an isolating static contact component, a vacuum arc-extinguishing chamber component and an insulating pull rod which are arranged on the bracket from top to bottom, a bus cable wire passing area is formed between the two side walls of the cabinet shell and the bracket, the isolating static contact component is connected to the lower end of the main bus component, the vacuum arc-extinguishing chamber component is arranged on the upper side of the insulating pull rod, a cable bus is arranged in the bus cable wire passing area, one end of the cable bus is connected with a cable sleeve of the cable chamber, the other end of the cable bus is connected with a movable contact part at the lower end of the vacuum arc-extinguishing chamber component through a flexible connecting piece, the movable contact part at the upper end of the vacuum arc-extinguishing chamber component is connected with the three-station switch, and the insulating pull rod is driven to push the movable contact part at the lower end of the vacuum arc-extinguishing chamber component to realize the power connection through the vacuum arc-extinguishing chamber component and the three-station switch;
the three-station switch comprises a gate mechanism movably arranged between the isolation static contact component and the vacuum arc-extinguishing chamber component, and is used for controlling the connection or disconnection of the cable sleeve and the isolation static contact component through the vacuum arc-extinguishing chamber component and controlling the connection or disconnection of the cable sleeve and the grounding loop through the vacuum arc-extinguishing chamber component.
Compared with the prior art, the switch cabinet has the advantages that the main bus assembly, the isolation static contact component, the three-station switch, the vacuum arc-extinguishing chamber component and the insulation pull rod are respectively arranged on the support, so that the integration level of the internal structure of the switch cabinet is improved, the main bus assembly, the isolation static contact component, the three-station switch, the vacuum arc-extinguishing chamber component and the insulation pull rod can be conveniently arranged in the cabinet shell along with the support, the installation process of the switch cabinet is simplified, and the production and the manufacture of products are facilitated. In addition, the cable bus is arranged at the left side and the right side of the cabinet shell, so that the height dimension space of the cabinet shell is well saved.
Furthermore, the support comprises a bottom mounting beam positioned at the bottom, a top positioning frame positioned at the top and insulating isolation frames positioned at two sides, wherein the two insulating isolation frames are respectively connected to the two sides of the top positioning frame and the bottom mounting beam, and are provided with heat dissipation holes arranged along the vertical direction.
Furthermore, the bottom mounting beam is made of metal materials, the support further comprises insulating plates positioned on two sides, the insulating plates are respectively connected to the opposite outer sides of the two insulating isolation frames and arranged between the cable bus and the bottom mounting beam, the insulating heat shrink tube is sleeved on the outer side of the cable bus, and through the arrangement, dangerous factors such as electric arcs are well avoided by arranging the insulating plates between the cable bus and the bottom mounting beam, and the use safety of products is guaranteed.
Furthermore, the lower end of the insulating isolation frame is provided with an inserting clamping groove with an inner opening, two sides of the bottom mounting beam are respectively and limitedly mounted in the corresponding inserting clamping grooves, the insulating isolation frame and the bottom mounting beam are fixed in a screw connection mode, and through the arrangement, the insulating isolation frame and the bottom mounting beam are more firmly mounted and connected, the insulating performance requirement is met, and the product using reliability is good.
Further, the main bus assembly is arranged on the upper side of the top positioning frame and further comprises a top mounting beam, the top mounting beam is connected with the main bus assembly through an insulating supporting member, the support is connected to the front wall plate and the rear wall plate of the switch chamber through the top mounting beam so as to fix the conductive assembly, the bottom mounting Liang Yanyan longitudinally extends out of the front side and the rear side of the insulating isolation frame, the front side and the rear side of the bottom mounting beam are respectively connected to the front wall plate and the rear wall plate of the switch chamber so as to support the conductive assembly, and through the arrangement, the support and the cabinet shell are firmly assembled and connected, and the product structure is stable.
Furthermore, the main bus assembly comprises a main bus member and side expansion sleeves connected to two sides of the main bus member, the isolation fixed contact member is arranged at the bottom of the top positioning frame, the main bus member is arranged at the top of the top positioning frame and is electrically connected with the upper end of the isolation fixed contact member, the main bus member extends to two sides respectively, the two side expansion sleeves are connected to two side wall plates of the switch chamber respectively, the side expansion sleeves are Z-shaped, one end of the upper side of each side expansion sleeve is connected with the outer end of the main bus member, one end of the lower side of each main bus member penetrates through the side wall plate of the switch chamber to form a bus electricity connection expansion port, and by the arrangement, the bus electricity connection expansion port at the outer end of each main bus member can be kept at a designated height in a Z-shaped mode, so that the use universality of the switch cabinet is improved, and the height of the cabinet shell is further saved in order to meet the height requirement of the standardized side expansion sleeve of the normal-pressure sealed switch cabinet.
Further, the support further comprises a bottom support piece arranged on the upper side of the bottom mounting beam, the lower portion of the vacuum arc-extinguishing chamber component is supported on the upper side of the bottom support piece, the insulation pull rod is arranged on the bottom mounting beam through a transmission structure, one side of the bottom support piece extends out of the bus cable wire passing area through the insulation isolation frame, the other end of the cable bus is connected to the outer side of the bottom support piece to be fixedly connected with the flexible connecting piece, and the vacuum arc-extinguishing chamber support further comprises a circuit breaker operating mechanism which is used for driving the insulation pull rod to move relatively through the transmission structure, so that a movable contact portion of the vacuum arc-extinguishing chamber component is switched on or switched off through a conductive rod and a fixed contact portion, circuit switching between the vacuum arc-extinguishing chamber component and the cable bus is achieved, and through the arrangement, the circuit switching between the cable bus and the vacuum arc-extinguishing chamber component is controlled through the circuit breaker operating mechanism, the operation mode is simple, and the switching effect of the control of the cable bus is good.
Furthermore, the transmission structure comprises a main shaft and a crank arm, wherein the main shaft is rotatably connected to the bottom mounting beam, the crank arm is connected to the main shaft, the outer end of the crank arm is rotatably connected with the insulating pull rod, and the breaker operating mechanism is used for driving the main shaft to rotate relatively.
Further, the gate mechanism comprises a moving contact component and a three-station operating mechanism, wherein one end of the moving contact component is elastically hinged with the upper end of the vacuum arc-extinguishing chamber component through a disc spring component, the other end of the moving contact component is a moving contact, the three-station operating mechanism is used for driving the moving contact component to swing relatively so as to enable the moving contact of the moving contact component to be switched on with the isolation static contact component, thereby conducting the electric connection between the main bus component and the cable sleeve or enabling the moving contact to be switched off with the isolation static contact component, and therefore the electric connection between the main bus component and the cable sleeve is disconnected.
Further, the side wall plate of the switch chamber is provided with a grounding loop component connected with a grounding loop, the isolation static contact component is provided with an isolation static contact, the grounding loop component is provided with three-phase grounding static contacts, and the three stations of the three-station switch are respectively corresponding to a closing station where a moving contact is contacted with the isolation static contact, an isolation station where the moving contact is suspended between the three-phase grounding static contact and the isolation static contact and a grounding station where the moving contact is contacted with the three-phase grounding static contact.
Further, a moving knife buffer piece is arranged on one side, far away from the moving contact, of the isolating static contact component, when the moving contact follow-up contact component is switched on in place relative to the isolating static contact component, the moving contact is buffered and stopped on the moving knife buffer piece, an electric field control piece is arranged at the lower end of the isolating static contact component, a grounding buffer piece is arranged on one side, far away from the moving contact component, of the grounding loop component, when the moving contact follow-up contact component is switched on in place relative to the grounding loop component, the moving contact is buffered and stopped on the grounding buffer piece, and through the arrangement, the moving contact component is effectively limited to move excessively relative to each other, and the limiting and buffering effects of the moving contact component are good.
Drawings
Fig. 1is a schematic diagram of a switchgear.
Fig. 2 is a schematic diagram of a conductive assembly.
Fig. 3 is an isometric view of a conductive assembly.
Fig. 4 is a schematic view of an insulating spacer.
The reference numerals illustrate the cabinet housing 1, the conductive assembly 2, the three-position switch 3, the switch room 4, the cable room 5, the bracket 6, the isolation stationary contact member 22, the vacuum interrupter member 23, the insulation pull rod 24, the bus cable threading area 25, the bottom mounting beam 61, the top positioning frame 62, the insulation isolation frame 63, the heat dissipation hole 631, the insulation plate 64, the plug-in clamping groove 632, the top mounting beam 65, the side expansion sleeve 211, the main bus member 212, the bottom support 66, the moving contact support member 67, the cable bus 241, the main shaft 242, the crank arm 243, the isolation stationary contact 31, the isolation station 32, the ground circuit member 33, the moving blade buffer 28, the ground buffer 29, the first lateral connecting frame 26, the second lateral connecting frame 27, the moving contact member 34, the operation shaft 35, the insulation link 36, the plug pin 81, the plug hole 82, the plug-in portion 83, the pin hole 84, the insulation baffle 88, the insulation support member 60, the soft connection 245, the cable sleeve 51, the moving contact 231, the fixed contact 232, and the support beam 213.
Detailed Description
The following describes specific embodiments of the present invention with reference to the drawings. In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
Referring to fig. 1 to 4, the switch cabinet comprises a cabinet shell 1, a conductive component 2 and a three-position switch 3, wherein the cabinet shell 1 is provided with a switch chamber 4 and a cable chamber 5 which are arranged from top to bottom, the three-position switch 3 is arranged in the switch chamber 4, the conductive component 2 is arranged in the switch chamber 4 and comprises a support 6, a main bus component, an isolating static contact component 22, a vacuum arc-extinguishing component 23 and an insulating pull rod 24 which are arranged on the support 6 from top to bottom, a bus cable wire passing area 25 is formed between two inner side walls of the cabinet shell 1 and the support 6, the isolating static contact component 22 is connected to the lower end of the main bus component, the vacuum arc-extinguishing component 23 is arranged on the upper side of the insulating pull rod 24, a cable bus 241 which is connected with a cable sleeve 51 of the cable chamber 5 is arranged in the bus wire passing area 25, one end of the cable bus 241 is connected with the cable sleeve 51 of the cable chamber 5 through a flexible connecting piece 245, a fixed contact 232 at the upper end of the vacuum arc-extinguishing component 23 is connected with the three-position switch 3, when the insulating pull rod 24 is driven, the vacuum arc-extinguishing component 23 is pushed by the fixed contact component 232 to the lower end of the vacuum arc-extinguishing component 23 through the movable contact component 23 or the movable contact component 23 is connected with the three-position switch 23 through the movable contact component 23, and the vacuum switch 23 is connected with the three-position switch 23 through the movable contact component 23 or the three-position switch component 23 through the movable contact component 23, and the vacuum switch 23 is connected with the movable contact component 51 through the movable contact component.
Compared with the prior art, the switch cabinet has the advantages that the three-station switch 3, the main bus assembly, the isolation static contact component 22, the vacuum arc-extinguishing chamber component 23 and the insulation pull rod 24 are respectively arranged on the support 6, so that the integration level of the internal structure of the switch cabinet is improved, the main bus assembly, the isolation static contact component 22, the three-station switch 3, the vacuum arc-extinguishing chamber component 23 and the insulation pull rod 24 can be conveniently arranged in the cabinet shell 1 along with the support 6, the installation process of the switch cabinet is simplified, and the production and the manufacture of products are facilitated. In addition, the cable bus bars 241 are arranged on the left and right sides of the cabinet 1, which can well save the height dimension space of the cabinet 1.
In one embodiment, the cable bus 241 and the cable sleeve 51 are respectively provided with an insulating material, for example, an insulating tube is sleeved outside the cable bus 241, and an insulating cap is sleeved outside the cable sleeve 51.
Referring to fig. 1 to 3, in one embodiment, the stand 6 includes a bottom mounting beam 61 at the bottom, a top positioning frame 62 at the top, and insulating spacers 63 at both sides, and the two insulating spacers 63 are respectively connected to both sides of the top positioning frame 62 and the bottom mounting beam 61, so that the stand 6 forms a frame structure, and the insulating spacers 63 are provided with a plurality of heat dissipation holes 631 arranged along the vertical direction, so that the stand 6 has a better heat dissipation function and avoids high-temperature operation of internal electrical components.
Referring to fig. 1 to 4, in an embodiment, the bottom mounting beam 61 is made of a metal material, the bottom mounting beam 61 is preferably made of an iron material, and has the characteristics of high strength and hardness, the bracket 6 further includes insulating plates 64 located at two sides, the height of the insulating plates 64 is 1.2 to 3 times that of the bottom mounting beam 61, the insulating plates 64 are respectively connected at opposite outer sides of the two insulating spacers 63 and are arranged between the cable bus 241 and the bottom mounting beam 61, and the cable bus 241 is sleeved with an insulating heat shrink tube, by arranging the insulating plates 64 between the cable bus 241 and the bottom mounting beam 61, risk factors such as electric arcs are well avoided, and product use safety is guaranteed.
Referring to fig. 1 to 3, in an embodiment, the lower end of the insulating spacer 63 is provided with an insertion slot 632 with an opening on the inner side, two sides of the bottom mounting beam 61 are respectively and limitedly mounted in the corresponding insertion slots 632, the insulating spacer 63 and the bottom mounting beam 61 are further fixed by means of screw connection, by means of the arrangement, the mounting connection between the insulating spacer 63 and the bottom mounting beam 61 is more stable, the insulating performance requirement is met, and the product use reliability is good.
Referring to fig. 1 to 4, in one embodiment, the main bus bar assembly is disposed on the upper side of the top positioning frame 62, and further includes a top mounting beam 65, the lower side of the top mounting beam 65 is connected to the upper side of the main bus bar assembly through an insulating support member 60, the bracket 6 is connected to the front wall plate and the rear wall plate of the switch cabinet 4 through the top mounting beam 65 to fix the conductive assembly 2, the top mounting beam 65 is connected to the top wall plate of the switch cabinet 4 through a screw connection, the bottom mounting beam 61 extends longitudinally to the front and rear sides of the insulating spacer 63, and the front and rear sides of the bottom mounting beam 61 are connected to the front wall plate and the rear wall plate of the switch cabinet 4 through screws to support the conductive assembly 2, and by such arrangement, the bracket 6 is assembled and connected to the cabinet housing 1, so that the product structure is stable.
Referring to fig. 1 to 4, in one embodiment, the conductive assemblies 2 and the three-position switch 3 are respectively provided with three groups, the three groups of conductive assemblies 2 and the three-position switch 3 are installed in the cabinet housing 1 along the longitudinal direction, the three groups of conductive assemblies 2 commonly use the same bottom mounting beam 61 and top mounting beam 65, and the adjacent brackets 6 are separated by insulating baffles 88.
Referring to fig. 1 to 4, in one embodiment, the main bus assembly includes a main bus member 212 and side expansion bushings 211 connected to both sides of the main bus member 212, the isolating static contact member 22 is disposed at the bottom of the top positioning frame 62, the main bus member 212 is disposed at the top of the top positioning frame 62 and electrically connected to the upper end of the isolating static contact member 22, the main bus member 212 extends to both sides, the outer ends of the side expansion bushings 211 are respectively connected to the wall plates of the switch cabinet 4, the side expansion bushings 211 are in a zigzag shape, the upper ends of the side expansion bushings 211 are connected to the outer ends of the main bus member 212, and the lower ends of the main bus member 212 penetrate through the wall plates of the switch cabinet 4 to form bus electrical expansion ports.
In one embodiment, the left wall plate and the right wall plate of the switch chamber 4 are respectively provided with a supporting beam 213 at the upper side and the lower side of the side expansion sleeve 211, so that the side expansion sleeve 211 has a good supporting force when connecting an external cable.
Referring to fig. 1 to 4, in one embodiment, the bracket 6 further includes a bottom support 66 disposed on the upper side of the bottom mounting beam 61, the lower portion of the vacuum interrupter member 23 is supported on the upper side of the bottom support 66, one side of the bottom support 6 extends out of the bus cable passing area 25 through an insulating spacer 63, the other end of the cable bus 241 is connected to the outer side of the bottom support 6 to fix the connection with the flexible connector 245, the insulating pull rod 24 is disposed on the bottom mounting beam 61 through a transmission structure, and further includes a circuit breaker operating mechanism (not shown) for driving the insulating pull rod 24 to relatively move through the transmission structure, so that the cable bus 241 drives the conductive rod in the vacuum interrupter member 23 to switch on or off through the flexible connector 245, thereby realizing the circuit switching between the vacuum interrupter member 23 and the cable bus 241, and by such arrangement, the switching action of the cable bus 241 and the vacuum interrupter member 23 is controlled through the circuit breaker operating mechanism, and the operation mode is simple, and the switching effect of the cable bus 241 is controlled.
Referring to fig. 1, in one embodiment, the transmission structure includes a main shaft 242 rotatably connected to the bottom mounting beam 61 and a crank arm 243 connected to the main shaft 242, the outer end of the crank arm 243 is rotatably connected to the bottom of the insulation pull rod 24, and the breaker operating mechanism is used for driving the main shaft 242 to rotate relatively in forward and reverse directions, and further driving the insulation pull rod 24 to move up and down through the crank arm 243. The circuit breaker operating mechanism may employ existing mechanical means for driving the spindle 242 in relative rotation.
Referring to fig. 1 to 3, in one embodiment, the gate mechanism includes a moving contact member 34 and a three-station operating mechanism (not shown), wherein one end of the moving contact member 34 is elastically hinged to a fixed contact portion 232 at the upper end of the vacuum interrupter member 23 through a disc spring assembly, the other end of the moving contact member 34 is a moving contact, and the three-station operating mechanism is used for driving the moving contact member 34 to swing relatively so as to enable the moving contact of the moving contact member 34 to close with the isolation fixed contact member 22, thereby conducting the electrical connection between the main bus assembly and the cable sleeve 51, or enable the moving contact to break the electrical connection between the main bus assembly and the cable sleeve 51, and by means of the arrangement, the gate mechanism is simple in structure and good in on-off effect of controlling the main bus assembly and the cable sleeve 51.
Referring to fig. 1, in one embodiment, the stand 6 further includes a moving contact supporting member 67 disposed at an upper side of the bottom supporter 66, the upper end of the vacuum interrupter member 23 is connected to the moving contact supporting member 67 and penetrates through the upper side of the moving contact supporting member 67, and the lower end of the moving contact member 34 is rotatably connected to the upper end of the vacuum interrupter member 23.
Referring to fig. 1 to 4, in one embodiment, the side wall plate of the switch chamber 4 is provided with a grounding loop member 33 connected with a grounding loop, the end of the isolating static contact member 22 is provided with an isolating static contact 31, the grounding loop member 33 is provided with three-phase grounding static contacts, and the three stations of the three-station switch 3 respectively correspond to a closing station where a moving contact is contacted with the isolating static contact 31, an isolating station 32 where the moving contact is suspended between the three-phase grounding static contact and the isolating static contact 31, and a grounding station where the moving contact is contacted with the three-phase grounding static contact.
Referring to fig. 1, in one embodiment, a moving blade buffer 28 is disposed on a side of the isolating static contact member 22 away from the moving contact, the moving contact is buffered and stopped on the moving blade buffer 28 when the moving contact following contact member 34 is closed in place relative to the isolating static contact member 22, an electric field control member (not shown) is disposed at the lower end of the isolating static contact member 22, a grounding buffer 29 is disposed on a side of the grounding loop member 33 away from the moving contact member, the moving contact is buffered and stopped on the grounding buffer 29 when the moving contact following contact member 34 is closed in place relative to the grounding loop member 33, the moving blade buffer 28 and the grounding buffer 29 are made of insulating materials, preferably silica gel materials, by such arrangement, the moving contact member 34 is effectively limited to excessively move relatively, and the limiting and buffering effects of the moving contact member 34 are good.
Referring to fig. 1 to 4, in one embodiment, the three-station operation mechanism further comprises a first lateral connecting frame 26 and a second lateral connecting frame 27, wherein two sides of the bracket 6 are respectively connected to two side wall plates of the cabinet shell 1 through the first lateral connecting frame 26 and the second lateral connecting frame 27, the three-station operation mechanism comprises a driving device, an operation shaft 35 and an insulation connecting rod 36, the operation shaft 35 is arranged on the first lateral connecting frame 26, and two ends of the insulation connecting rod 36 are respectively connected with the operation shaft 35 and the movable contact member 34, and the driving device can adopt the existing mechanical device for driving the spindle 242 to rotate relatively. The ground return member 33 is disposed on top of the second lateral connecting frame 27, so that the ground return member 33 has a better supporting force when the moving contact member 34 is closed with the ground return member 33.
Referring to fig. 1 to 4, in one embodiment, the top positioning frame 62, the moving contact supporting member 67 and the bottom supporting member 66 are respectively connected with the insulating spacer 63 through mortise and tenon structures, the mortise and tenon structures comprise bolts 81, insertion holes 82 formed in the insulating spacer 63, insertion parts 83 formed in two sides of the positioning plate, the insertion parts 83 are provided with pin holes 84 vertically arranged, after the insertion parts 83 are inserted into the corresponding insertion holes 82, the top positioning plate, the moving contact supporting member 67 and the bottom supporting member 66 are respectively fixedly connected with the insulating spacer 63 through the bolts 81 and the pin holes 84, and the insulating spacer 63, the bolts 81, the top positioning frame 62, the moving contact supporting member 67 and the bottom supporting member 66 are respectively made of insulating materials.
Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way.
Claims (10)
1. Switch cabinet, its characterized in that includes:
The cabinet shell is provided with a switch chamber and a cable chamber which are arranged from top to bottom, and a three-station switch is arranged in the switch chamber;
The electric conduction assembly is arranged in the switch chamber and comprises a bracket, a main bus assembly, an isolation static contact component, a vacuum arc-extinguishing chamber component and an insulation pull rod, wherein the main bus assembly, the isolation static contact component, the vacuum arc-extinguishing chamber component and the insulation pull rod are arranged on the bracket from top to bottom, a bus cable wire passing area is formed between two side walls of the cabinet shell and the bracket, the isolation static contact component is connected to the lower end of the main bus assembly, the vacuum arc-extinguishing chamber component is arranged on the upper side of the insulation pull rod, a cable bus is arranged in the bus cable wire passing area, one end of the cable bus is connected with a cable sleeve of the cable chamber, the other end of the cable bus is connected with a movable contact part at the lower end of the vacuum arc-extinguishing chamber component through a flexible connecting piece, a fixed contact part at the upper end of the vacuum arc-extinguishing chamber component is connected with a three-station switch, and the insulation pull rod is used for pushing the movable contact part at the lower end of the vacuum arc-extinguishing chamber component to realize the power connection with the main bus assembly through the vacuum arc-extinguishing chamber component and the three-station switch when driven;
the three-station switch comprises a gate mechanism movably arranged between the isolation static contact component and the vacuum arc-extinguishing chamber component, and is used for controlling the connection or disconnection of the cable sleeve and the isolation static contact component through the vacuum arc-extinguishing chamber component and controlling the connection or disconnection of the cable sleeve and the grounding loop through the vacuum arc-extinguishing chamber component.
2. The switchgear as claimed in claim 1, wherein the said brackets comprise a bottom mounting beam at the bottom, a top locating rack at the top and insulating spacers at both sides, the two insulating spacers being connected to both sides of the top locating rack and the bottom mounting beam, respectively.
3. The switch cabinet according to claim 2, wherein the bottom mounting beam is made of a metal material, the bracket further comprises insulating plates located on two sides, the insulating plates are respectively connected to opposite outer sides of the two insulating isolation frames and are arranged between the cable bus and the bottom mounting beam, and an insulating heat shrink tube is sleeved on the outer side of the cable bus.
4. A switch cabinet according to claim 3, wherein the lower end of the insulating isolation frame is provided with an insertion clamping groove with an inner opening, and two sides of the bottom mounting beam are respectively and limitedly mounted in the corresponding insertion clamping grooves.
5. The switchgear according to claim 2, characterized in that the main bus bar assembly is provided on the upper side of the top positioning frame, and further comprising a top mounting beam connected to the main bus bar assembly through an insulating support member, the bracket is connected to the front wall plate and the rear wall plate of the switching chamber through the top mounting beam to fix the conductive assembly, the bottom mounting Liang Yanyan extends longitudinally out of the front and rear sides of the insulating spacer, and the front and rear sides of the bottom mounting beam are connected to the front wall plate and the rear wall plate of the switching chamber, respectively, to support the conductive assembly.
6. The switch cabinet according to any one of claims 2 to 5, wherein the main bus assembly comprises side-expansion sleeves and main bus members, the isolating static contact members are arranged at the bottom of the top positioning frame, the main bus members are arranged at the top of the top positioning frame and electrically connected with the upper ends of the isolating static contacts, the main bus members extend towards two sides respectively, the side-expansion sleeves are connected to two side wall plates of the switch chamber respectively, the side-expansion sleeves are Z-shaped, one ends of the upper sides of the side-expansion sleeves are connected with the outer ends of the main bus members, and one ends of the lower sides of the side-expansion sleeves penetrate through the side wall plates of the switch chamber to form bus electricity connection expansion openings.
7. A switchgear as claimed in claim 2 or 3, wherein the support further comprises a bottom support member provided on the upper side of the bottom mounting beam, the lower part of the vacuum interrupter member is supported on the upper side of the bottom support member, the insulating tie rod is provided on the bottom mounting beam by a transmission structure, one side of the bottom support member extends out of the bus cable wire passing area through the insulating isolation frame, the other end of the cable bus is connected to the outer side of the bottom support member to fix the connection with the flexible connection member, and the switchgear further comprises a circuit breaker operating mechanism for driving the insulating tie rod to move relatively by the transmission structure, so that the movable contact part of the vacuum interrupter member is switched on or off with the fixed contact part by the conductive rod, and the circuit between the vacuum interrupter member and the cable bus is switched on or off.
8. The switchgear according to claim 7, wherein the transmission structure comprises a main shaft rotatably connected to the bottom mounting beam and a crank arm connected to the main shaft, wherein an outer end of the crank arm is rotatably connected to the insulating pull rod, and the circuit breaker operating mechanism is configured to drive the main shaft to rotate relatively.
9. The switch cabinet according to claim 1, wherein the gate mechanism comprises a moving contact member and a three-station operating mechanism, one end of the moving contact member is elastically hinged with the upper end of the vacuum interrupter member through a disc spring assembly, the other end of the moving contact member is a moving contact, and the three-station operating mechanism is used for driving the moving contact member to swing relatively so as to enable the moving contact of the moving contact member to be closed with the isolation fixed contact member, thereby conducting the electric connection between the main bus assembly and the cable sleeve, or enable the moving contact to be opened with the isolation fixed contact member, thereby disconnecting the electric connection between the main bus assembly and the cable sleeve.
10. The switch cabinet according to claim 9, wherein the side wall plate of the switch chamber is provided with a grounding loop component connected with a grounding loop, the isolation static contact component is provided with an isolation static contact, the grounding loop component is provided with three-phase grounding static contacts, and three stations of the three-station switch are respectively corresponding to a closing station where a moving contact is contacted with the isolation static contact, an isolation station where the moving contact is suspended between the three-phase grounding static contact and the isolation static contact, and a grounding station where the moving contact is contacted with the three-phase grounding static contact;
The movable contact is in buffer stop on the movable knife buffer piece when the movable contact follower contact member is switched on in place relative to the movable contact member, and an electric field control member is arranged at the lower end of the movable contact follower contact member;
And one side of the ground return circuit component, which is far away from the moving contact piece, is provided with a ground buffer piece, and when the moving contact follow-up contact component is switched on in place relative to the ground return circuit component, the moving contact is buffered and stopped on the ground buffer piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411636019.5A CN119518499A (en) | 2024-11-15 | 2024-11-15 | Switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411636019.5A CN119518499A (en) | 2024-11-15 | 2024-11-15 | Switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119518499A true CN119518499A (en) | 2025-02-25 |
Family
ID=94650106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411636019.5A Pending CN119518499A (en) | 2024-11-15 | 2024-11-15 | Switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119518499A (en) |
-
2024
- 2024-11-15 CN CN202411636019.5A patent/CN119518499A/en active Pending
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