CN111193217A

CN111193217A - Vertical copper bar metal enclosed high-voltage switch equipment

Info

Publication number: CN111193217A
Application number: CN202010150871.7A
Authority: CN
Inventors: 巢云亚
Original assignee: Changzhou Luegao Electric Technology Co Ltd
Current assignee: Changzhou Luegao Electric Technology Co Ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-05-22

Abstract

The invention discloses vertical copper bar metal enclosed high-voltage switch equipment, which comprises a switch cabinet, and a grounding switch, a contact box and a current transformer which are assembled in the switch cabinet, wherein the contact box comprises an upper contact box and a lower contact box; the upper supporting bus, the lower supporting bus, the outgoing bus and the grounding connecting bus are respectively connected by vertically arranged copper bars. On the basis of not changing the size of the switch cabinet, the invention changes the flat copper bars into vertical copper bars, and ensures that the space between the two sides in the cabinet and the air insulation distance between the two sides meet the requirements.

Description

Vertical copper bar metal enclosed high-voltage switch equipment

Technical Field

The invention relates to a vertical copper bar metal enclosed high-voltage switch device.

Background

In the existing 40.5kV switchgear required by the national grid company, the clearance air insulation distance between phases and the ground is not less than 300mm, most of manufacturers with the standard size of the width of the cabinet at present are 1400mm, and the distance between phases is 350mm, as shown in fig. 1, 100 flat copper bars are arranged, the width of the copper bars is 60-80 mm, the clear distance of 300mm cannot be achieved at all, and only composite insulation measures such as heat-shrinkable sleeves of the copper bars, surface vulcanization of the copper bars, installation of phase-to-phase or ground insulation partition plates and the like can be adopted to achieve the requirements. Also, a small number of manufacturers begin to increase the width of the cabinet to more than 1600mm, but this will lead to the cost of the cabinet body, the copper bar, transportation and the like to be greatly increased, the house of the substation also needs to be increased, and the difficulty in the field installation of the equipment is increased.

If a copper bar heat-shrinkable sleeve is adopted, the heat-shrinkable sleeve cannot be used as a composite insulating medium according to clear regulations of national power grid companies. If the surface of the copper bar is vulcanized, namely a 2-3 mm thick epoxy resin layer is poured on the surface of the copper bar to play an insulation role, but the process is complex, the cost is high, the pouring thickness is uneven, the thickness is thin and brittle, and the copper bar is easy to damage or crack due to factors such as carrying, installation, expansion with heat and contraction with cold and loses the insulation function.

If install insulating barrier additional, very troublesome, make in the cubical switchboard limited space become more narrow, easily destroy electric field distribution in the cabinet, and its surface is smooth, the easy moisture absorption of itself, often arouses along the surface creepage, leads to the insulation breakdown accident.

Disclosure of Invention

In view of the above problems, the present invention provides a vertical copper bar metal-enclosed high voltage switchgear, which can ensure the inter-phase and opposite air insulation distance inside the switchgear to meet the requirement by changing the flat copper bar into vertical copper bar arrangement without changing the size of the switchgear.

The technical scheme for realizing the invention is as follows

The vertical copper bar metal enclosed high-voltage switch equipment comprises a switch cabinet, and a grounding switch, a contact box and a current transformer which are assembled in the switch cabinet, wherein the contact box comprises an upper contact box and a lower contact box; the upper supporting bus, the lower supporting bus, the outgoing bus and the grounding connecting bus are respectively connected by vertically arranged copper bars.

Furthermore, the wire outlet end of the upper contact box and the wire outlet end of the lower contact box are vertically led out wire outlet copper bars, and the wire outlet copper bars of the upper contact box are connected with the main bus through vertically arranged bus switching copper bars; the main bus is assembled at the top in a bus chamber of the switch cabinet through a bus insulator which faces downwards vertically, and flanges for insulating and shielding are arranged on two sides of a supporting end of the bus insulator; the clamping block is used for fixedly assembling the main bus between the flanges, and a notch for inserting the main bus is formed in the clamping block; and the lap joints of the main buses of each phase and the outgoing line copper bars of the upper contact boxes connected with the main buses of each phase are arranged in a staggered manner.

Furthermore, the contact box comprises a box body and an outlet copper bar, wherein an assembly cavity of the movable contact and the fixed contact is arranged in the box body, the box body is provided with an outlet groove communicated with the assembly cavity, and an installation plate extends out of the box body; the outlet copper bars are longitudinally arranged and led out from the outlet grooves of the box body; a pressing mechanism for pressing the outgoing copper bar in the mounting surface in the box body is arranged in the box body; the inner wall of the box body is provided with a central positioning groove for the rear end of the static contact to be inserted so as to form positioning for the rear end of the static contact.

Furthermore, the outlet copper bar and the mounting surface in the box body are vertically arranged; the pressing mechanism comprises a clamping block at least provided with one positioning groove, one positioning groove is correspondingly used for inserting an outlet copper bar, and a locking piece for locking the clamping block on the mounting surface in the box body.

Furthermore, the peripheral surface of the box body outside the wire outlet groove is at least provided with a circle of closed-loop umbrella skirt enclosing the wire outlet groove therein.

Further, the upper part of the rear end surface outside the box body is inwards sunken to form a notch; the rear end face outside the box body is arranged at the lower part of the notch, and the semicircular retaining pieces extend outwards, and air gaps are reserved between the outer peripheral surfaces of the semicircular retaining pieces and between the box body.

Furthermore, the current transformer comprises a transformer body, and the middle part of the top of the transformer body is raised upwards to form a wiring platform; two longitudinally-arranged wiring pile heads are assembled on the wiring platform, a wire outlet copper bar of the lower contact box is connected with one wiring pile head, and the other wiring pile head is connected with the grounding switch static cutter head through the vertically-arranged connecting copper bar; the connection pile head is provided with a connection hole, two side parts of the top of the mutual inductor body are respectively and fixedly provided with a side part baffle which is vertically arranged, and two end parts of the top of the mutual inductor body are respectively and fixedly provided with an end part baffle which is vertically arranged; the side baffle and the end baffle are connected in an end-to-end manner to form a closed type, and the wiring pile head is enclosed in the closed type; and the side surface of the wiring pile head is provided with a heat dissipation groove which is arranged along the height direction of the wiring pile head and is used for natural ventilation.

Furthermore, the grounding switch comprises a movable cutter head, a static cutter head component and an operating mechanism for operating the movable cutter head to move; the static cutter head component comprises a copper bar type static cutter head, a clamping mechanism and an insulator, and the front end of the insulator is provided with an assembling surface; the middle part of the copper bar type static cutter head is vertically arranged with the assembling surface; the upper end of the copper bar type static cutter head extends upwards to be matched with the moving cutter head, and the lower end of the copper bar type static cutter head extends downwards to be used as a connecting end connected with the current transformer; the clamping mechanism assembles the copper bar type static cutter head on the front end assembly surface of the insulator from the middle part of the copper bar type static cutter head.

Further, the clamping mechanism comprises a clamping block, a connecting piece and a positioning pin; the inner side of the clamping block is a clamping surface matched with the insulator assembling surface, the clamping block is provided with an insertion groove for the longitudinal insertion of the copper bar type static cutter head, and the insertion groove extends to the clamping surface on the inner side of the clamping block; after the copper bar type static cutter head is inserted into the slot, the copper bar type static cutter head is tightly pressed between the slot bottom surface of the slot and the front end assembly surface of the insulator; the positioning pin is clamped in the clamping block and transversely penetrates through the copper bar type static cutter head; the front end of the connecting piece transversely penetrates through the clamping block from the outer side of the clamping block and vertically enters the assembling surface, so that the clamping surface of the clamping block is attached to the assembling surface of the front end of the insulator to form locking.

Furthermore, after the copper bar type static tool bit is inserted into the slot, the middle outer wall of the copper bar type static tool bit in the slot is in clearance fit with the side wall of the slot.

By adopting the technical scheme, the copper bar is connected between the leading-out end of the upper contact box and the main bus, between the leading-out end of the lower contact box and the current transformer, and between the current transformer and the static tool bit of the grounding switch by using the vertically arranged copper bar respectively, so that the size of the switchgear body is unchanged, the width of the switchgear body is 1400mm, the copper bar is formed by adopting a vertical bending processing technology for wiring, three-phase copper bars in the switchgear body are vertically arranged in parallel, the lap joint is staggered and avoided, a special bus supporting insulator with flanges (the flanges play an insulating and isolating role) is adopted, and the copper bar is fixed by using a matched clamping block, and the copper bar is not required to be; because of vertical arrangement, the bare copper bar does not need to be sheathed with a heat-shrinkable sleeve and does not need to be additionally provided with an insulating partition plate, the structure in the cabinet body is relatively optimized, the processing technology is simplified, the installation is convenient and rapid, the copper bar is fixed and reliable, the vertical copper bar has better heat dissipation than the flat copper bar, the inter-phase and relatively-ground clearance air insulation distance in the cabinet can still reach more than 310mm, and the requirements of national power grid companies are completely met.

Drawings

Fig. 1 is a schematic view of an internal structure of a conventional switchgear;

FIG. 2 is a schematic view of the internal structure of the switchgear of the present invention;

FIG. 3 is a schematic view of the contact box of the present invention;

FIG. 4 is a schematic view of the internal structure of the contact box of the present invention;

FIG. 5 is a schematic top view of a contact box of the present invention;

FIG. 6 is a schematic diagram of the right side view of FIG. 5;

FIG. 7 is a schematic structural diagram of a current transformer according to the present invention;

FIG. 8 is a side view of the structure of FIG. 7;

FIG. 9 is a schematic top view of the structure of FIG. 7;

FIG. 10 is a schematic structural diagram of the grounding switch of the present invention;

FIG. 11 is a left side view of the structure of FIG. 10;

fig. 12 is a schematic top view of the grounding switch insulator of fig. 11;

in the drawing, 1 is a switch cabinet, 2 is an earthing switch, 301 is an upper contact box, 302 is a lower contact box, 4 is a current transformer, 5 is a copper bar, 6 is an outlet copper bar, 7 is a bus switching copper bar, 8 is a main bus, 9 is a bus insulator, 10 is a flange, 11 is a clamping block, 12 is a notch, 13 is a box body, 14 is an assembly chamber, 15 is an outlet groove, 16 is a mounting plate, 17 is an upper mounting position, 18 is a lower mounting position, 19 is an inner mounting surface, 20 is a positioning groove, 21 is a clamping block, 22 is a locking piece, 23 is a static contact, 24 is a central positioning groove, 25 is a movable contact, 26 is a movable contact meshing position, 27 is a closed-ring type umbrella skirt, 28 is a radial ridge, 29 is an axial ridge, 30 is a notch, 31 is a semi-circular arc baffle, 32 is an air gap, 33 is a transverse convex ridge, 34 is a transformer body, 35 is a wiring platform, 36 is a wiring pile head, 37 is a connecting copper bar, 38 is the connecting hole, 39 is the radiating groove, 40 is first side baffle, 41 is the second side baffle, 42 is first end baffle, 43 is the second end baffle, 44 is the carving of product data plate or posting department, 45 is moving the tool bit, 46 is quiet tool bit subassembly, 47 is operating device, 48 is copper bar formula quiet tool bit, 49 is the insulator, 50 is the assembly surface, 51 is the clamp splice, 52 is the connecting piece, 53 is the locating pin, 54 is the clamp surface, 55 is the slot, 56 is the pilot hole, 57 is the counter bore, 58 is putting into the groove, 59 is the flange.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

Referring to fig. 1-12, the vertical copper bar metal enclosed high voltage switch device comprises a switch cabinet 1, and a grounding switch 2, a contact box and a current transformer 4 which are assembled in the switch cabinet, wherein the contact box comprises an upper contact box 301 and a lower contact box 302, the upper contact box and the lower contact box have the same structure, and the positions and the directions of the upper contact box and the lower contact box are different.

The copper bar on the outgoing line side of the current transformer is an outgoing line bus, and the connecting copper bar between the outgoing line side of the current transformer and the static tool bit of the grounding switch forms a grounding connecting bus; the upper supporting bus, the lower supporting bus, the outgoing bus and the grounding connecting bus are respectively connected by adopting vertically arranged copper bars 5; copper bars connected with adjacent main buses are arranged in parallel, so that the consistent distance between phases is ensured, and the requirement of safety distance is met.

The outlet end of the upper contact box and the outlet end of the lower contact box are vertically led out outlet copper bars 6, the outlet copper bars of the upper contact box are connected with a main bus 8 through vertically arranged bus switching copper bars 7, and the bus switching copper bars can select single copper bars or double spliced copper bars according to the current requirement; the outgoing copper bar led out from the upper contact box is arranged upwards and is connected with the main bus double-spliced copper bar corresponding to the outgoing copper bar, and the outgoing copper bar of the lower contact box is arranged downwards and is connected with the current transformer; the outlet copper bars of the three-phase upper contact box and the double-spliced copper bars are arranged in parallel, so that the safety distance between phases is ensured.

The main bus is assembled at the top of a bus chamber of the switch cabinet through a bus insulator 9 which faces downwards vertically, so that the internal space of the switch cabinet is saved, and wiring is facilitated; the supporting end of the bus insulator is provided with a flange 10 shielded by insulation; the upper end of the bus switching copper bar and the main bus are connected in the flange through a clamping block 11, the clamping block is an insulating block with a notch 12, the notch clamps the upper end of the bus switching copper bar and the main bus tightly, the insulating block is connected to the lower end of the insulator through screws on two sides of the insulating block, and the copper bar is fixed without punching; the lower end of the bus switching copper bar is connected with the upper contact box outlet copper bar. The lap joint of each phase main bus and the upper contact box outgoing line copper bar connected with each phase main bus is staggered, so that wiring is facilitated, and meanwhile, the safety is improved.

The copper bar is formed by adopting a vertical bending processing technology to carry out wiring, the three-phase copper bar in the cabinet is vertically arranged in parallel, lap joints are staggered and avoided, a special bus with flanges (the flanges play an insulating and isolating role) is adopted to support an insulator and a matched clamping block is adopted to fix the copper bar, and the copper bar is fixed without punching; because of vertical arrangement, the bare copper bar does not need to be sheathed with a heat-shrinkable sleeve and does not need to be additionally provided with an insulating partition plate, the structure in the cabinet body is relatively optimized, the processing technology is simplified, the installation is convenient and rapid, the copper bar is fixed and reliable, the vertical copper bar has better heat dissipation than a flat copper bar, and when the bus switching copper bar is an 80 x 10 double-spliced copper bar, the maximum current can reach 2500A; the inter-phase and opposite ground clearance air insulation distance in the cabinet can still reach more than 310mm, and the requirements of national power grid companies are completely met. Due to the change of wiring modes, the current transformer can be installed in the switch cabinet from the middle in the prior art, and is installed at the bottom in the switch cabinet, so that wiring and clearance are facilitated.

Referring to fig. 3-6, the contact box comprises a box body 13 and a wire outlet copper bar 6, wherein an assembly chamber 14 of the movable contact and the fixed contact is arranged in the box body, the box body is provided with a wire outlet groove 15 communicated with the assembly chamber, and a mounting plate 16 extends out of the box body; the upper end of the mounting plate is an upper mounting location 17 and the lower end is a lower mounting location 18 to facilitate assembly of the contact box into the switchgear.

The outlet copper bars are longitudinally arranged and led out from the outlet grooves of the box body; as shown in fig. 4, the outlet copper bars are vertically arranged, the outlet copper bars are arranged in a width manner and are led out from the outlet grooves, and the corresponding outlet notches are designed in an enlarged manner so as to facilitate the installation and observation of the following components inside the contact box.

A pressing mechanism for pressing the outgoing copper bar in the mounting surface 19 in the box body is arranged in the box body; the pressing mechanism comprises a clamping block 21 with two positioning grooves 20, the two positioning grooves are arranged at intervals, one positioning groove is correspondingly provided for inserting an outgoing copper bar, the outgoing copper bar is inserted into the positioning groove to form a clamping structure, the width of the positioning groove is slightly larger than the thickness of the outgoing copper bar, the outgoing copper bar can be clamped into the positioning groove as long as the outgoing copper bar can be locked into a locking piece 22 on an installation surface in the box body, the locking piece is a screw, through holes are formed in two sides of the clamping block and used for the screw to pass through, and the screw is screwed into the installation surface in the box. The lower end of the outgoing line copper bar is fixedly connected with the rear end of the static contact 23 through a bolt.

The inner wall of the box body is provided with a central positioning groove 24 for inserting the rear end of the static contact so as to position the rear end of the static contact. During assembly, the rear end of the static contact is inserted into the central positioning groove to limit the radial movement of the static contact in the contact box, so that accurate positioning is realized, the central positioning groove is adaptive to the shape of the rear end of the static contact, and optimally, the rear end of the static contact is in a sheet shape, and the central positioning groove is a flat groove adaptive to the sheet shape of the rear end of the static contact.

The outlet copper bar and the mounting surface in the box body are vertically arranged, namely, the outlet copper bar is longitudinally led out from the contact box through the outlet groove; the wire outlet groove is a rectangular, circular or polygonal groove opening from the outside of the box body to the inside of the box body, and the meshing position of the movable contact and the fixed contact can be seen; specifically, the wire outlet groove extends above the meshing position 26 of the movable contact 25 and the fixed contact 23 in the contact box, so that the meshing position can be seen from the outside, and the assembly auxiliary extends into the contact box from the wire outlet groove for operation in the later assembly. Because of the increase of the wire outlet groove, the fixed contact and the copper bar can be conveniently installed in the front cabinet and the rear cabinet of the switch cabinet (originally, the fixed contact and the copper bar can be installed only in the front cabinet and a special tool is needed), the occlusion condition of the movable contact and the fixed contact (originally, the movable contact and the fixed contact cannot be seen) can be clearly seen at the wire outlet groove, and the movable contact and the fixed contact are exposed at the wire groove due to the larger heat productivity of the movable contact and the fixed contact, so that the heat.

In order to meet the safety of the contact box and ensure the surface creepage distance, the outer peripheral surface of the box body outside the wire outlet groove is at least provided with a circle of closed-loop umbrella skirt 27 enclosing the wire outlet groove therein. The number of the closed-loop umbrella skirt is set according to the height and the required creepage distance. The closed-loop umbrella skirt comprises a radial rib 28 arranged along the diameter direction of the box body and an axial rib 29 arranged along the axial direction of the box body, and the radial rib and the axial rib are in tail connection to form a closed loop; meanwhile, the upper part of the rear end surface outside the box body is inwards sunken to form a notch 30, so that the creepage distance is increased. Further, a semicircular separation blade 31 is arranged at the lower part of the notch on the rear end face outside the box body, the semicircular separation blade extends outwards, and an air gap 32 is reserved between the outer peripheral surfaces of the semicircular separation blades and the box body. And a transverse convex edge 33 arranged along the radial direction of the box body is arranged below the rear part of the box body. The design of the umbrella skirt, the notch, the gap and the transverse convex edge meets the requirement for ensuring the creepage distance along the surface of the contact box in all directions.

According to the contact box, the outgoing copper bars are led out from the outgoing line grooves in a longitudinal arrangement mode, namely, the outgoing line copper bars are led out from the outgoing line grooves in a vertical mode instead of a horizontal mode, the sizes of the corresponding outgoing line grooves are correspondingly enlarged according to the safety requirement between the outgoing line copper bars and the outgoing line grooves, the vertical copper bars in the switch cabinet can be conveniently lapped after the outgoing line copper bars are changed into the longitudinal outgoing lines, and the switching copper bars do not need to be added; the wire outlet grooves are correspondingly enlarged, the meshing positions of the movable contact and the fixed contact in the contact box can be clearly seen, the heat dissipation of the movable contact and the fixed contact is very facilitated, and meanwhile, the auxiliary installation can be carried out through the wire outlet grooves during the installation, so that the components in the contact box can be flexibly installed, and the applicability is enhanced; in the installation of the rear end of the static contact, a central positioning groove is formed in the installation surface in the contact box for the insertion of the rear end of the static contact so as to limit the radial movement of the static contact in the contact box, and the outgoing copper bar is fixedly installed on the installation surface in the contact box through a pressing mechanism and is fixedly connected with the rear end of the static contact, so that the stable connection is realized. Adopt vertical outgoing line to satisfy the installation requirement of vertical copper bar in the cubical switchboard, simultaneously, increase outlet groove opening under the prerequisite of ensureing air insulation distance and surface creepage distance to the interlock condition of the inside sound contact of contact box, the heat dissipation at the interlock contact position of being convenient for is looked over to the later stage equipment of being convenient for.

Referring to fig. 7-9, the current transformer includes a transformer body 34, the top middle of which is raised upward to form a wiring platform 35; the top surface of the wiring platform is a plane. Two wiring pile heads 36 which are longitudinally arranged are assembled on the wiring platform, the lower ends of the wiring pile heads extend into the mutual inductor to be connected with internal devices of the mutual inductor, an outgoing line copper bar of the lower contact box is connected with one wiring pile head, and the other wiring pile head is connected with a static tool bit of the grounding switch through a vertically arranged connecting copper bar 37.

Two or four connecting holes 38 are arranged at the top of the connecting pile head exposed above the connecting platform, and the connecting pile head is fixedly connected with one end of the connecting copper bar by respectively arranging connecting pieces into the connecting holes.

Side baffles which are vertically arranged are respectively and fixedly arranged at two side parts of the top of the mutual inductor body, and end baffles which are vertically arranged are respectively and fixedly arranged at two end parts of the top of the mutual inductor body; the side baffle and the end baffle are connected in an end-to-end manner to form a closed type, and the wiring pile head is enclosed in the closed type; the vertical setting of end baffle for former mutual-inductor structure, reduced the occupation length space that the mutual-inductor is in the cubical switchboard, also increased the creepage distance to ground simultaneously, satisfy the safety requirement. Because the longitudinal arrangement of wiring pile head, except satisfying the wiring of cubical switchboard vertical copper bar, can also with the inside produced better diffusion of heat of mutual-inductor outside, promote the heat dispersion of mutual-inductor.

In order to obtain better heat dissipation capability of the transformer, the side face of the terminal post head is provided with a heat dissipation groove 39 for natural ventilation, which is arranged along the height direction of the terminal post head, namely when air flows, cold air can enter the heat dissipation groove from the lower part, and hot air is discharged upwards to take away heat in the terminal post head.

The lateral part baffle in this application is including fixed first lateral part baffle 40 that sets up in mutual-inductor body top surface one side and the fixed second lateral part baffle 41 that sets up in mutual-inductor body top surface opposite side, and first lateral part baffle, second lateral part baffle are for upwards extending the formation from the lateral part of mutual-inductor body top surface, and two lateral part baffles are integrated into one piece promptly with the mutual-inductor body. In order to ensure that the wiring position of the mutual inductor meets the requirement of safety performance, the heights of the first side baffle and the second side baffle are higher than the height of the wiring pile head, and the heights of the first side baffle and the second side baffle are the same.

The end baffle comprises a first end baffle 42 fixedly arranged at one end of the top surface of the mutual inductor body and a second end baffle 43 fixedly arranged at the other end of the top surface of the mutual inductor body, wherein the first end baffle and the second end baffle are formed by upwards extending from the end part of the top surface of the mutual inductor body, namely the two end baffles and the mutual inductor body are integrally formed. In order to meet the creepage distance, the heights of the first end baffle and the second end baffle are lower than the height of the wiring pile head, and the heights of the first end baffle and the second end baffle are the same.

The end baffle and the side baffle shown in the attached drawings of the application are straight plates, and can be arranged in a wavy wave manner in order to obtain better creepage distance and further reduce the occupied space of the mutual inductor.

In this application, wiring pile head is the wiring copper bar of vertically arranging on the wiring platform. The heat dissipation groove extends upwards to the top of the wiring pile head from the position where the wiring pile head is exposed out of the wiring platform, and the heat dissipation groove 39 is arranged on one side surface or two side surfaces of the wiring copper bar, so that flowing air can better take away heat in the wiring pile head and diffuse the heat outwards; the cross section of the heat dissipation groove can be semicircular, rectangular or other shapes; the outer wall of end shield is product data plate sculpture or posts department 44, because the setting of end shield in this application can move the data plate to the obvious position at mutual-inductor body top from the bottom of original side at the mutual-inductor, is convenient for look over the data plate parameter.

According to the current transformer structure, the longitudinal arrangement of the end baffles can reduce the occupied space of the transformer in the length direction, so that the arrangement inside the switch cabinet is optimized, and meanwhile, the safe creepage distance can be met; the wiring pile heads are longitudinally arranged, so that the wiring requirement of a vertical copper bar in the switch cabinet can be met, meanwhile, heat generated in the transformer can be quickly transferred to the outside for diffusion, further, the heat dissipation groove adopts a heat pipe convection heat dissipation principle, so that hot air is quickly discharged upwards, the heat is taken away, and the heat dissipation capacity of the transformer is improved; move the data plate to the obvious position at mutual-inductor body top from original bottom the mutual-inductor, be convenient for look over the data plate parameter, current transformer has that occupation space is few, the heat-sinking capability is strong, the convenient and fast's of wiring advantage.

Referring to fig. 10-12, the grounding switch 2 includes a movable blade 45, a stationary blade assembly 46, and an operating mechanism 47 for operating the movable blade to cooperate with the stationary blade assembly, wherein the operating mechanism is a conventional mechanism and will not be described in detail.

The static cutter head component comprises a copper bar type static cutter head 48, namely the static cutter head is made of a copper bar; the copper bar type static cutter head is assembled on a clamping mechanism on the assembling surface of the insulator, and the whole copper bar type static cutter head is limited in the transverse direction and the longitudinal direction and cannot move after being assembled; and an insulator 49, the front end of which is provided with a vertical assembling surface 50 for assembling the static cutter head.

The copper bar type static tool bit is vertically arranged with the assembling surface, and then the plane where the copper bar type static tool bit is located is vertically arranged with the assembling surface so as to meet the vertical wiring of wiring copper bars in the high-voltage switch cabinet; the upper end of the copper bar type static cutter head extends upwards to be used as a matching position matched with the moving cutter head 45 of the grounding switch, and the lower end of the copper bar type static cutter head extends downwards to be used as a connecting end connected with the connecting copper bar 37; the clamping mechanism assembles the copper bar type static cutter head on the front end assembly surface of the insulator 41 from the middle part of the copper bar type static cutter head.

Specifically, the clamping mechanism includes a clamp block 51, a connecting member 52, a positioning pin 53; the clamping block is an insulating clamping block made of insulating materials, the inner side of the clamping block is a clamping surface 54 matched with the assembling surface of the insulator, the clamping block is provided with an inserting groove 55 for the longitudinal insertion of the copper bar type static cutter head, and the inserting groove extends to the clamping surface on the inner side of the clamping block so as to facilitate the installation and the insertion of the copper bar type static cutter head; after the copper bar type static cutter head is inserted into the slot, the copper bar type static cutter head is pressed between the slot bottom surface of the slot and the front end assembling surface of the insulator, namely, two side surfaces of the copper bar type static cutter head are pressed between the slot bottom surface and the assembling surface, and after the copper bar type static cutter head is locked by the connecting piece and matched with the limiting of the slot, the copper bar type static cutter head is assembled to enable the copper bar type static cutter head to be incapable of moving transversely. The positioning pin is clamped in the clamping block and transversely penetrates through the copper bar type static cutter head, so that the copper bar type static cutter head cannot move longitudinally.

The connecting piece is a screw, and the front end of the connecting piece transversely penetrates through the clamping block from the outer side of the clamping block and vertically enters the assembly surface so as to attach the clamping surface of the clamping block and the assembly surface of the front end of the insulator to form locking. The two sides of the clamping block are respectively provided with an assembling hole 56, a screw is arranged in one assembling hole, and the outer side of the clamping block is provided with a counter bore 57 communicated with the assembling hole, so that a nut at the rear end of the screw can be placed in the counter bore, and the insulation hidden trouble caused by the fact that the nut is exposed outside can be avoided.

After the copper bar type static tool bit is inserted into the slot, the middle outer wall of the copper bar type static tool bit in the slot is in clearance fit with the side wall of the slot, so that the copper bar type static tool bit has certain free movement in the transverse direction, the upper end of the copper bar type static tool bit is in alignment fit with the movable tool bit, and the contact is more close and reliable. The clamping surface of the clamping block is provided with an inserting groove 58 for inserting the positioning pin, two ends of the inserting groove do not extend to the side surface of the clamping block, the length of the inserting groove is larger than the thickness of the copper bar type static tool bit but smaller than the width of the clamping block, a hole for the positioning pin to pass through is formed in the copper bar type static tool bit, and then the positioning pin is inserted into the inserting groove so as to longitudinally limit the copper bar type static tool bit; the middle part of the putting groove is communicated with the slot, and the putting groove and the slot are vertically arranged. Flanges 59 extend outwards from two sides of the insulator assembling surface respectively, and the clamping mechanism is located between the flanges, so that the phase-to-phase insulation reliability is improved. During the equipment, insert the hole of copper bar formula quiet tool bit with the locating pin earlier, then make, the locating pin is aimed at the set-in groove, and the slot is aimed at to the quiet tool bit of copper bar formula, aligns the insertion in the lump, then inserts in the pilot hole that corresponds through the screw to the screw in assembly surface presss from both sides tightly.

In the grounding switch, the conventional special-shaped static cutter head structure is replaced by the copper bar type static cutter head, the interphase air insulation distance meets the requirement, no interphase insulation partition plate needs to be additionally arranged, the copper bar type structure is more convenient to manufacture relative to the special shape, and the middle part of the copper bar type static cutter head is clamped at the front end of the insulator through a special clamping mechanism, so that the assembly is convenient; because the copper bar type structure, the quiet tool bit upper end of copper bar is prolonged, and the cooperation end between the tool bit is moved in the use, because extend certain length back on the copper bar, produce certain swing elasticity to when with moving the tool bit cooperation, quiet tool bit can be automatic with move the tool bit alignment cooperation, and the contact cooperation of the two is inseparable reliable.

Claims

1. The vertical copper bar metal enclosed high voltage switch device comprises a switch cabinet, and a grounding switch, a contact box and a current transformer which are assembled in the switch cabinet, wherein the contact box comprises an upper contact box and a lower contact box,

the copper bar on the outgoing line side of the current transformer is an outgoing line bus, and the connecting copper bar between the outgoing line side of the current transformer and the static tool bit of the grounding switch forms a grounding connecting bus;

the upper supporting bus, the lower supporting bus, the outgoing bus and the grounding connecting bus are respectively connected by vertically arranged copper bars.

2. The vertical copper bar metal enclosed high voltage switchgear of claim 1,

the outlet end of the upper contact box and the outlet end of the lower contact box are vertically led out outlet copper bars, and the outlet copper bars of the upper contact box are connected with the main bus through vertically arranged bus switching copper bars;

the main bus is assembled at the top in a bus chamber of the switch cabinet through a bus insulator which faces downwards vertically, and flanges for insulating and shielding are arranged on two sides of a supporting end of the bus insulator; the clamping block is used for fixedly assembling the main bus between the flanges, and a notch for inserting the main bus is formed in the clamping block;

and the lap joints of the main buses of each phase and the outgoing line copper bars of the upper contact boxes connected with the main buses of each phase are arranged in a staggered manner.

3. The vertical copper bar metal enclosed high voltage switchgear as claimed in claim 1, wherein the contact box comprises a box body and a copper bar outlet, wherein the box body is provided with an assembly chamber for the moving and stationary contacts, the box body is provided with an outlet slot communicated with the assembly chamber, and the box body is extended with a mounting plate;

the outlet copper bars are longitudinally arranged and led out from the outlet grooves of the box body;

a pressing mechanism for pressing the outgoing copper bar in the mounting surface in the box body is arranged in the box body;

the inner wall of the box body is provided with a central positioning groove for the rear end of the static contact to be inserted so as to form positioning for the rear end of the static contact.

4. The vertical copper bar metal enclosed high voltage switchgear of claim 3, wherein the outlet copper bar is vertically arranged with the mounting surface in the box body;

the pressing mechanism comprises a clamping block at least provided with one positioning groove, one positioning groove is correspondingly used for inserting an outlet copper bar, and a locking piece for locking the clamping block on the mounting surface in the box body.

5. The vertical copper bar metal-enclosed high-voltage switchgear as claimed in claim 3 or 4, wherein the outer peripheral surface of the box body outside the outlet slot is provided with at least one ring of closed-loop umbrella skirt enclosing the outlet slot therein.

6. The vertical copper bar metal enclosed high voltage switch gear as claimed in claim 3 or 4, wherein the upper part of the rear end face outside the box body is recessed inwards to form a notch;

the rear end face outside the box body is arranged at the lower part of the notch, and the semicircular retaining pieces extend outwards, and air gaps are reserved between the outer peripheral surfaces of the semicircular retaining pieces and between the box body.

7. The vertical copper bar metal enclosed high voltage switchgear as claimed in any one of claims 1 to 4, wherein said current transformer comprises a transformer body, the middle part of the top of the transformer body is raised upwards to form a wiring platform;

two longitudinally-arranged wiring pile heads are assembled on the wiring platform, a wire outlet copper bar of the lower contact box is connected with one wiring pile head, and the other wiring pile head is connected with the grounding switch static cutter head through the vertically-arranged connecting copper bar;

the connection pile head is provided with a connection hole, two side parts of the top of the mutual inductor body are respectively and fixedly provided with a side part baffle which is vertically arranged, and two end parts of the top of the mutual inductor body are respectively and fixedly provided with an end part baffle which is vertically arranged; the side baffle and the end baffle are connected in an end-to-end manner to form a closed type, and the wiring pile head is enclosed in the closed type;

and the side surface of the wiring pile head is provided with a heat dissipation groove which is arranged along the height direction of the wiring pile head and is used for natural ventilation.

8. The vertical copper bar metal enclosed high voltage switch gear as claimed in any one of claims 1 to 4, wherein said grounding switch comprises a moving bit, a stationary bit assembly, and an operating mechanism for operating the moving bit;

the static cutter head component comprises a copper bar type static cutter head, a clamping mechanism and an insulator, and the front end of the insulator is provided with an assembling surface;

the middle part of the copper bar type static cutter head is vertically arranged with the assembling surface; the upper end of the copper bar type static cutter head extends upwards to be matched with the moving cutter head, and the lower end of the copper bar type static cutter head extends downwards to be used as a connecting end connected with the current transformer; the clamping mechanism assembles the copper bar type static cutter head on the front end assembly surface of the insulator from the middle part of the copper bar type static cutter head.

9. The vertical copper bar metal enclosed high voltage switchgear of claim 8, wherein said clamping mechanism comprises a clamping block, a connecting piece, a positioning pin;

the inner side of the clamping block is a clamping surface matched with the insulator assembling surface, the clamping block is provided with an insertion groove for the longitudinal insertion of the copper bar type static cutter head, and the insertion groove extends to the clamping surface on the inner side of the clamping block; after the copper bar type static cutter head is inserted into the slot, the copper bar type static cutter head is tightly pressed between the slot bottom surface of the slot and the front end assembly surface of the insulator;

the positioning pin is clamped in the clamping block and transversely penetrates through the copper bar type static cutter head;

the front end of the connecting piece transversely penetrates through the clamping block from the outer side of the clamping block and vertically enters the assembling surface, so that the clamping surface of the clamping block is attached to the assembling surface of the front end of the insulator to form locking.

10. The vertical copper bar metal-enclosed high-voltage switch gear as claimed in claim 8 or 9, wherein, after the copper bar type static cutter head is inserted into the slot, the middle outer wall of the copper bar type static cutter head in the slot is in clearance fit with the side wall of the slot.