A metal-clad switchgear

Abstract

The application discloses a metal armored draw-out switch device and belongs to the technical field of switch devices. Mainly comprising a cabinet, an opening and closing assembly, the opening and closing assembly is provided with a bottom plate and a mounting cavity; a pushing assembly, the pushing assembly comprises two groups of insertion blocks, two groups of fixed boxes, an inner part of the fixed box is respectively provided with an insertion slot and a mounting slot; two groups of electric cylinders, the electric cylinder is installed in the inside of the mounting slot, the output end of the electric cylinder is provided with a gathering part; two groups of mounting plates, the mounting plate is installed on the inner wall of the mounting cavity, the mounting plate is provided with a sliding rail, one end of the sliding rail is provided with a lower smooth channel, one end of the lower smooth channel is provided with an inclined sliding channel, one end of the inclined sliding channel away from the lower smooth channel is provided with an upper smooth channel. The metal armored draw-out switch device can be separated from the bottom plate after the circuit breaker is closed, the screw rod structure in the bottom plate is prevented from being abraded, and the effect that the circuit breaker is separated from the bottom plate after being closed is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of switch devices, in particular to a metal armored draw-out switch device. BACKGROUND

[0002] The metal armored draw-out switch device is a high-voltage power distribution device for a power system, as a high-voltage electrical device in a smart grid, the metal armored draw-out switch device undertakes the core task of circuit connection, disconnection and load control, the draw-out structure allows the operator to be completely isolated from the power supply, significantly reduces the risk of electric shock, and prevents external objects from being damaged through the armored structure, and ensures the stable operation of the device in harsh environments.

[0003] For example, the patent with the publication number CN106300114A specifically discloses a metal armored centrally installed draw-out switch device, the device is provided with a power room, a circuit breaker compartment, a cable compartment and an instrument compartment in the shell, a withdrawable trolley driven by a screw rod mechanism is arranged in the circuit breaker compartment, and a circuit breaker is arranged on the trolley, so that the trolley is driven to move by the screw rod, and the circuit breaker is driven to move, so as to facilitate the maintenance of the circuit breaker.

[0004] During long-term use, vibration may be generated due to the operation of the heat dissipation device, and the vibration may be transmitted to the screw rod, and since the trolley is always loaded with the circuit breaker, deformation and wear of the screw rod may be caused after long-term use, thereby affecting the transmission precision and service life of the screw rod, and thus the contact position of the circuit breaker during closing is deviated from the original closing position.

[0005] When the screw rod mechanism is deformed and worn, the circuit breaker may be stuck during the pushing and pulling process after each movement, and if the precision of the screw rod is affected, the closing position of the circuit breaker may also be deviated, and the deviation may gradually increase over time, thereby causing the risk of "virtual connection" during subsequent power supply.

[0006] Therefore, it is necessary to provide a metal armored draw-out switch device to solve the above problems.

[0007] It should be noted that the above information disclosed in the background section is only used to understand the background of the present application, and therefore, it can contain information which does not constitute prior art. SUMMARY

[0008] Based on the above problems existing in the prior art, the present application aims to provide a metal armored draw-out switch device, which can reduce the wear of the screw rod during long-term use after the circuit breaker is closed.

[0009] The technical scheme adopted by the application to solve its technical problems is: a metal armored movable switch device, comprising a cabinet, an instrument room, an opening and closing chamber and a power room are arranged in the cabinet respectively, and a circuit breaker is arranged in the opening and closing chamber; an opening and closing assembly is arranged in the opening and closing chamber, the opening and closing assembly has a bottom plate suitable for bearing the circuit breaker and a mounting cavity suitable for mounting; a pushing assembly is arranged in the opening and closing chamber, the pushing assembly comprises: two groups of plug blocks mounted on the two sides of the circuit breaker, at least two groups of square grooves are formed in the bottom plate, and rollers are rotatably arranged in the square grooves; two groups of fixing boxes are arranged on the inner wall of the mounting cavity, and an insertion slot and a mounting slot are formed in the inner wall of the fixing box; two groups of electric cylinders are arranged in the mounting slot, and a gathering part is arranged at the output end of the electric cylinder; two groups of mounting plates are arranged on the inner wall of the mounting cavity, and a sliding rail is arranged on the mounting plate, one end of the sliding rail is provided with a lower smooth channel, one end of the lower smooth channel is provided with an inclined sliding channel, and one end of the inclined sliding channel away from the lower smooth channel is provided with an upper smooth channel.

[0010] Further, the highest point of the end of the inclined sliding channel away from the lower smooth channel is flush with the upper surface of the lower smooth channel, and a clamping part is arranged on the bottom plate.

[0011] Further, at least two groups of square grooves are formed in the bottom plate, rollers are rotatably arranged in the square grooves, the circuit breaker is arranged on the upper surface of the at least two groups of rollers, fixing rods are arranged on the two sides of the circuit breaker, moving wheels are rotatably arranged on the fixing rods, and the moving wheels are arranged on the sliding rail.

[0012] Further, the gathering part has two groups of closing blocks, at least two groups of jacks are slidably arranged on the two groups of closing blocks, a top block is arranged at one end of the jack, a spring is arranged between the top block and the closing block, and the spring is sleeved on the outer circumferential surface of the jack.

[0013] Further, the opening and closing assembly comprises a closing door arranged on the mounting cavity, two groups of guide rails are arranged on the inner wall of the mounting cavity, a sliding groove is formed in the inner wall of the two groups of guide rails, at least two groups of rollers are rotatably arranged on the two sides of the bottom plate, and the rollers are rotatably arranged in the sliding groove.

[0014] Further, a lead screw is rotatably arranged in the mounting cavity, the bottom plate is threadedly arranged on the lead screw, a nut is arranged at one end of the lead screw, and a wrench is arranged on the nut.

[0015] Further, an electric shock prevention assembly is arranged on the instrument room, the electric shock prevention assembly comprises two groups of support frame groups arranged on the instrument room, a lead screw is rotatably arranged on one of the support frame groups, a sliding sleeve is threadedly arranged on the lead screw, and a hand wheel is arranged at the bottom end of the lead screw.

[0016] Further, the other group of support frame groups is provided with guide rods, and moving frames are slidably arranged on the guide rods, one end of the moving frames away from the guide rods is threadedly arranged on the lead screw, two groups of moving grooves are arranged on the moving frames, the two groups of moving grooves are arranged symmetrically, and vertical rods are slidably arranged in the two groups of moving grooves, and a through groove is arranged on the moving frame.

[0017] Further, the two groups of vertical rods are threadedly provided with first nuts, and the two groups of first nuts are located on the upper surfaces of the two groups of moving grooves, one group of vertical rods is provided with a fixed nut, the fixed nut is located on the lower surface of one group of moving grooves, one end of the two groups of vertical rods is provided with a compression ring, both ends of one group of compression rings are provided with bolts, both ends of the other group of compression rings are provided with insertion holes, and the bolts are provided with second nuts.

[0018] Further, a fixed cylinder is arranged between the two groups of compression rings, an extension cylinder is slidably arranged in the fixed cylinder, a clamping block is arranged at one end of the extension cylinder, a clamping groove is arranged on the clamping block, an elastic chuck is arranged at one end of the fixed cylinder, and a screw sleeve is threadedly arranged on the elastic chuck.

[0019] The beneficial effects of the present application are: the metal armored draw-out switchgear provided by the present application can be separated from the bottom plate after the closing of the circuit breaker, avoiding the abrasion of the lead screw structure inside the bottom plate, and achieving the effect of separating the circuit breaker from the bottom plate after closing.

[0020] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings accompanying the specification of the present application form a part thereof, and serve to provide further understanding of the present application, the illustrative embodiments of the present application and its description serve to explain the present application, and do not constitute improper limitations on the present application.

[0022] In the drawings:

[0023] Figure 1 It is the overall schematic diagram of the metal armored draw-out switchgear in the present application;

[0024] Figure 2 It is Figure 1 the enlarged schematic diagram of A in the figure;

[0025] Figure 3 It is Figure 2 the enlarged schematic diagram of C in the figure;

[0026] Figure 4 It is Figure 1 the enlarged schematic diagram of B in the figure;

[0027] Figure 5For Figure 4 Enlarged view at D;

[0028] Figure 6 For Figure 1 Partial structural schematic view from another perspective;

[0029] Figure 7 For Figure 6 Enlarged view at E;

[0030] Figure 8 For Figure 7 Enlarged view at F;

[0031] In the drawings, various reference numbers refer to various identified elements in the figures.

[0032] 1, cabinet; 101, instrument room; 102, opening and closing room; 103, power room;

[0033] 2, opening and closing assembly; 21, mounting cavity; 22, closing door; 23, wrench; 24, screw rod; 25, bottom plate; 26, square groove; 27, roller; 28, circuit breaker; 29, clamping part; 210, guide rail; 211, master switch;

[0034] 3, mounting plate; 31, slide rail; 32, lower smooth channel; 33, inclined slide; 34, upper smooth channel; 35, moving wheel;

[0035] 4, pushing assembly; 41, gathering part; 401, closing block; 42, electric cylinder; 43, fixed box; 44, mounting groove; 45, plug; 46, insertion groove; 47, spring; 48, jacking column; 49, top block;

[0036] 5, anti-electric shock assembly; 51, moving frame; 52, through groove; 53, support frame group; 54, guide rod; 55, lead screw; 56, hand wheel; 57, vertical rod; 571, moving groove; 58, compression ring; 59, bolt; 510, second nut; 511, fixed cylinder; 512, screw sleeve; 513, chuck; 514, extension cylinder; 515, clamping block. DETAILED DESCRIPTION

[0037] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should fall within the scope of protection of the present application.

[0039] The switch device disclosed in the present application is mainly applied in a smart grid, undertakes the core task of circuit connection, disconnection and load control, and includes a vacuum circuit breaker cabinet, a vacuum contactor cabinet and a reactor coolant pump switch cabinet, which are used for receiving and distributing electric energy, and controlling, protecting and monitoring circuits and devices, and performing safety functions specific to a nuclear power plant;

[0040] As shown in Figure 1 The switch device is divided into multiple groups of different functional unit compartments, such as an instrument room 101, an opening and closing room 102 and a power room 103, by using a reliable grounding metal partition plate.

[0041] The instrument room 101 is suitable for installing various relays, instruments, signal indicators and operating switches, and is completely enclosed by metal and independent of a high-voltage circuit to avoid the influence of an electromagnetic field generated by a high-voltage and high-current circuit on the work of comprehensive protection devices.

[0042] The power room 103 has a busbar room and a cable room inside, the busbar room is suitable for installing a main busbar, and the main busbar of the switch device and branch busbars in the cabinet are all sleeved with heat-shrinkable sleeves, which can improve the electrical insulation level of the medium-voltage switch device, and the cable room is suitable for installing a current transformer, a grounding switch, a lightning arrester, a moisture-proof heater for the cable room, a copper bar for cable installation and cables.

[0043] The copper bar for cable installation is fixed by a supporting insulator, which plays a mechanical support and electrical insulation function for the copper bar for cable installation, a slotted detachable stainless steel sealing plate can be prepared at the bottom of the cable room, a circular hole is opened on the sealing plate for the power cable to pass through, and a low-smoke, halogen-free and flame-retardant sealing ring is sealed between the periphery of the circular hole and the outer insulation layer of the cable, which can prevent small animals from entering the cable terminal room and causing insulation failure, and at the same time, the sealing ring also plays a protective role for the cable insulation layer, avoiding the sharp metal edges from damaging the cable insulation layer, to ensure the safety of the equipment and the convenience of the cable site construction.

[0044] The switch device is provided with safe and reliable interlocking devices, which fully meet the requirements of five-prevention, and the switch device adopts an integrated design concept and a rigid heavy-load support installation structure, a high-strength integrated bottom plate, an integrated top cover and an integrated front and rear side plate, which are bent multiple times to ensure that there is no broken connection of structural parts, and the parts assembly adopts large and small boss positioning.

[0045] The switch device adopts a modular top cover, the top cover plate is closed, and is used as a pressure relief plate, and is provided with a waterproof flow guide groove, ventilation holes are arranged on the two vertical surfaces, and a flow guide groove is arranged on the bottom surface, which prevents vertical dripping water from entering the switch cabinet, and achieves independent and effective ventilation and pressure release channels for the circuit breaker chamber, bus chamber and cable chamber, and the protection level is up to IP42.

[0046] Embodiment one: as shown in Figure 1 and Figure 4 , the application provides a metal armored movable switch device, which comprises a cabinet 1, the cabinet 1 is made of high-quality aluminum-zinc steel plate with good corrosion resistance, is punched and sheared by a high-precision numerical control punch, is double-layered and folded by a numerical control folding machine, is assembled by riveting and bolting, has the characteristics of strong corrosion resistance and high structural strength, and instrument rooms 101, opening and closing rooms 102 and power rooms 103 are arranged in the interior of the cabinet 1.

[0047] A master switch 211 and a plurality of buttons are arranged on the instrument room 101, the master switch 211 can be rotated from a vertical state to a horizontal state, and when the master switch 211 is in the horizontal state, the interior of the cabinet is powered on, and when the master switch 211 is in the vertical state, the interior of the cabinet is in a power-off state.

[0048] An opening and closing assembly 2 is arranged in the interior of the opening and closing room 102, as shown in Figures 1-3 The opening and closing assembly 2 comprises a mounting cavity 21 arranged in the interior of the opening and closing room 102, and the mounting cavity 21 is provided with a closing door 22 to close and open the mounting cavity 21.

[0049] Two groups of guide rails 210 are fixedly installed on the inner wall of the mounting cavity 21, sliding grooves are arranged in the interiors of the two groups of guide rails 210, a bottom plate 25 is arranged between the two groups of guide rails 210, the circuit breaker 28 is fixedly installed on the bottom plate 25, a plurality of rollers (not shown in the figure) are rotatably installed on the two sides of the bottom plate 25, and the rollers are rotatably arranged in the sliding grooves.

[0050] A lead screw 24 is rotatably installed in the interior of the mounting cavity 21, the bottom plate 25 is threadedly installed on the lead screw 24, one end of the lead screw 24 is provided with a nut, the nut is provided with a wrench 23, the wrench 23 is rotated by a worker, the lead screw 24 is driven to rotate through the nut, the bottom plate 25 is driven to move along the axis of the lead screw 24, and the movement direction of the bottom plate 25 is limited under the limitation of the guide rails 210.

[0051] In summary, when the circuit breaker 28 needs to be repaired, the wrench 23 is placed on the nut, and the wrench 23 is rotated. This causes the screw 24 to rotate through the nut, which in turn drives the base plate 25 to move along the axis of the screw 24. Under the restriction of the guide rail 210, the movement direction of the base plate 25 is restricted, thereby causing the circuit breaker 28 to move and thus perform the tripping operation for maintenance.

[0052] Since the base plate 25 is always loaded with the circuit breaker 28 and the vibration generated during the use of the cabinet, the lead screw 24 may wear after long-term use, which will affect its transmission accuracy and lifespan, resulting in a deviation between the contact position when the circuit breaker 28 is closed and the original closing position.

[0053] To solve this problem, the circuit breaker 28 is separated from the base plate 25. Multiple sets of square grooves 26 are opened on the base plate 25. Rollers 27 are rotatably installed inside the square grooves 26. The circuit breaker 28 is set on the upper surface of the multiple sets of rollers 27, so that when installing the circuit breaker 28, it can be lifted onto the base plate 25 by a crane, so that the bottom of the circuit breaker 28 contacts the multiple sets of rollers 27, thereby pushing the circuit breaker 28 into the interior of the mounting cavity 21, making the pushing of the circuit breaker 28 smoother.

[0054] Furthermore, a clamping part 29 is provided on the base plate 25. The clamping part 29 can be a motor-driven clamping structure. For example, a motor is provided inside the base plate 25, and a bidirectional lead screw is installed at the output end of the motor. The bidirectional lead screw is rotatably installed inside the base plate 25, and the axis of the bidirectional lead screw is perpendicular to the axis of the lead screw 24 and is arranged vertically to avoid mutual interference. The bidirectional lead screw has two sets of threaded parts with opposite directions of rotation. Clamping plates are threaded on the two sets of threaded parts, and a groove is opened on the base plate 25. The clamping plate part is located inside the groove.

[0055] Driven by the motor, the bidirectional lead screw rotates and the two sets of clamping plates move closer to each other to clamp and fix the circuit breaker 28 on the base plate 25.

[0056] It should be noted that cylinders can also be installed at both ends of the base plate 25, and the output end of the cylinders can be connected to the clamping plates to drive the two sets of clamping plates to move closer to each other to clamp the circuit breaker 28, as a better solution in this application.

[0057] like Figures 2-3 As shown, two sets of mounting plates 3 are fixedly installed on the inner wall of the mounting cavity 21. A slide rail 31 is fixedly installed on the mounting plate 3. A lower smooth track 32 is provided at one end of the slide rail 31. An inclined slide rail 33 is provided at one end of the lower smooth track 32. An upper smooth track 34 is provided at the end of the inclined slide rail 33 away from the lower smooth track 32. The highest point of the end of the inclined slide rail 33 away from the lower smooth track 32 is flush with the upper surface of the lower smooth track 32.

[0058] A fixed rod is fixedly installed on both sides of the circuit breaker 28, and a moving wheel 35 is rotatably installed on the fixed rod, and the moving wheel 35 is located on the slide rail 31;

[0059] Further, when the circuit breaker 28 is pushed to close, the circuit breaker 28 is pushed to move on the roller 27, and the moving wheel 35 is simultaneously moved from the lower smooth track 32 to the upper smooth track 34, and with the continuous movement of the circuit breaker 28, the moving wheel 35 is simultaneously moved from the lower smooth track 32 to the inclined slide track 33, and when the moving wheel 35 moves from the inclined slide track 33 to the upper smooth track 34, the circuit breaker 28 is separated from the roller 27 at this time, and the bottom plate 25 no longer bears the weight of the circuit breaker 28 at this time, and the weight of the circuit breaker 28 is borne by the slide rail 31 and the mounting plate 3;

[0060] Then, the circuit breaker 28 is continuously pushed to move the moving wheel 35 along the upper surface of the upper smooth track 34, until the circuit breaker 28 is fully contacted with the system to be closed, the closing operation is completed, and the clamping part 29 can clamp the circuit breaker 28;

[0061] Further, the connection between the mounting plate 3 and the inner wall of the mounting cavity 21 can be reinforced, such as adding a support frame or a reinforcing plate, so that the connection is more stable, and the weight of the circuit breaker 28 can be better borne;

[0062] Since the movement of the circuit breaker 28 is smoother through the moving wheel 35, after the closing operation of the circuit breaker 28 is completed, a certain pressing force needs to be manually maintained to stabilize the closing, and then clamping is performed, which prolongs the single operation time, and especially in the scene that needs to be closed frequently (such as testing and maintenance), the efficiency loss is significant;

[0063] Therefore, in order to solve this problem, as shown in Figure 3 and Figures 6-8 A pushing assembly 4 is arranged in the inside of the mounting cavity 21, and the pushing assembly 4 is suitable for pushing the circuit breaker 28 to move;

[0064] The pushing assembly 4 includes an insertion block 45 fixedly installed on both sides of the circuit breaker 28, and two groups of fixed boxes 43 are fixedly installed on the inner wall of the mounting cavity 21, and the fixed boxes 43 are located on both sides of the circuit breaker 28, and an insertion slot 46 suitable for the insertion block 45 to enter is arranged in the inside of the fixed box 43;

[0065] Further, when the circuit breaker 28 moves and drives the moving wheel 35 to move gradually on the lower smooth track 32 to the upper smooth track 34, the plug block 45 is synchronously driven to gradually approach the plug slot 46, when the circuit breaker 28 enters the upper smooth track 34 from the inclined slide track 33, the plug block 45 enters the plug slot 46, and with the continuous movement of the circuit breaker 28, the moving wheel 35 moves in the upper smooth track 34, synchronously drives the plug block 45 to move in the plug slot 46, until the inner wall at one end of the plug slot 46 is abutted, in order to facilitate the description, it is defined as the closed position;

[0066] It should be noted that the size of the plug block 45 is smaller than the size of the plug slot 46, so as to avoid affecting the movement of the plug block 45 into the plug slot 46 when the circuit breaker 28 drives the moving wheel 35 to enter the upper smooth track 34, that is, when the circuit breaker 28 is separated from the roller 27;

[0067] The installation slot 44 is located at the rear end of the plug slot 46, and the electric cylinder 42 is fixedly installed in the installation slot 44, the output end of the electric cylinder 42 is fixedly installed with the gathering part 41, and the gathering part 41 is a existing pneumatic finger, which is prior art, and the specific structure and principle will not be described in detail here;

[0068] The gathering part 41 has two groups of closing blocks 401 which can approach or move away from each other, and a plurality of top columns 48 are slidably arranged on the two groups of closing blocks 401, one end of the top column 48 is provided with a top block 49, and a spring 47 is arranged between the top block 49 and the closing block 401, and the spring 47 is sleeved on the outer circumferential surface of the top column 48;

[0069] Thus, under the driving of the electric cylinder 42, the gathering part 41 is driven to approach or move away from the fixed box 43, so as to drive the top column 48 and the top block 49 to approach or move away from the fixed box 43;

[0070] In the initial state, the two groups of closing blocks 401 move away from each other, so that the two groups of closing blocks 401 are located above and below the fixed box 43 respectively, so as to avoid interfering with the plug block 45 of the circuit breaker 28 entering the plug slot 46, and the gathering part 41 moves away from the fixed box 43;

[0071] When the moving wheel 35 of the circuit breaker 28 moves on the lower smooth track 32, the two sets of combined brake blocks 401 move away from each other to avoid interference with the movement of the plug 45. When one end of the plug 45 enters the insertion slot 46 and the other end passes through the two sets of combined brake blocks 401, the gathering part 41 is started to drive the two sets of combined brake blocks 401 to move close to each other. Then the electric cylinder 42 is started to drive the gathering part 41 and the combined brake blocks 401 to move, and drive the top block 49 to move until it abuts against one end of the plug 45. With the continuous movement of the electric cylinder 42, the plug 45 is pressed against the top column 48 until the top block 49 abuts against the combined brake blocks 401. At this time, the combined brake blocks 401 drive the plug 45 to move in the insertion slot 46 through the top block 49 until it abuts against the other end of the insertion slot 46. At this time, the circuit breaker 28 is in the closed position, and the gathering part 41 is in the maximum limit position. At this time, the clamping part 29 is started to clamp and fix the circuit breaker 28;

[0072] As shown in the Figure 4 instrument room 101 can be provided with a plurality of control buttons, and the plurality of control buttons are connected with the PLC system, and the electric cylinder 42, the gathering part 41 and the clamping part 29 are connected with the PLC system, so as to control the electric cylinder 42, the gathering part 41 and the clamping part 29 to be started in turn;

[0073] In summary, when in use, after the circuit breaker 28 is placed on the bottom plate 25, the bottom of the circuit breaker 28 is in contact with the surface of the plurality of rollers 27, so that the sliding of the circuit breaker 28 is more smooth. The circuit breaker 28 is pushed to drive the moving wheel 35 to gradually move upward on the lower smooth track 32 to the upper smooth track 34, and synchronously drive the plug 45 to gradually approach the insertion slot 46. When the moving wheel 35 enters the upper smooth track 34 from the inclined slide 33, the circuit breaker 28 is separated from the rollers 27, so that the bottom plate 25 no longer bears the weight of the circuit breaker 28. The plug 45 enters the insertion slot 46. When the moving wheel 35 enters the upper smooth track 34, one end of the plug 45 enters the insertion slot 46, and with the synchronous movement of the circuit breaker 28, the plug 45 moves in the insertion slot 46. When the other end of the plug 45 passes through the gathering part 41, the gathering part 41 drives the two sets of combined brake blocks 401 to move close to each other. The electric cylinder 42 is started to drive the gathering part 41 to move until one end of the plug 45 abuts against the top block 49. At this time, the top block 49 drives the top column 48 to move in the combined brake blocks 401 due to the extrusion of the insertion hole. The spring 47 is compressed until the combined brake blocks 401 abut against the top block 49, and then drive the plug 45 to move in the insertion slot 46 until the plug 45 abuts against the end wall of the insertion slot 46. At the same time, the moving wheel 35 moves on the upper smooth track 34. At this time, the circuit breaker 28 is in the closed position. Then the clamping part 29 is started to clamp the circuit breaker 28. The top block 49 always maintains the pressing force on the plug 45 under the action of the restoring force of the spring 47, which further enhances the stability of the circuit breaker 28. Then the cabinet is powered on through the main switch 211 on the instrument room 101;

[0074] When power off, turn the total switch 211 to power off, and control the cylinder 42 and the gathering part 41 to move or not according to whether press the buttons on the instrument room 101, if not press the button, the cylinder 42 always drives the gathering part 41 to resist the end face of the plug block 45;

[0075] When power on, press the button to control the cylinder 42 to drive the gathering part 41 to extend and retract again, and drive the plug block 45 to move again, to avoid the circuit breaker 28 deviating unexpectedly;

[0076] When need to power off for maintenance, turn the total switch 211 to power off, when the inside of the cabinet has been powered off, press the control button to drive the clamping part 29 to release the clamping of the circuit breaker 28, the cylinder 42 starts to drive the gathering part 41 to extend, so as to drive the closing block 401 and the top block 49 to move away from the plug block 45, press the button of the instrument room 101 to control the closing block 401 of the gathering part 41 to move away from each other;

[0077] Then open the closed door 22, pull the circuit breaker 28, drive the moving wheel 35 to move from the upper smooth track 34 to the lower smooth track 32, at the same time, the plug block 45 moves outward in the plug slot 46, when the moving wheel 35 enters the lower smooth track 32, one end of the plug block 45 extends out of the plug slot 46, at the same time, the circuit breaker 28 is located on the upper surface of the plurality of roller 27, the clamping part 29 clamps the circuit breaker 28 again, then turn the lead screw 24 to drive the bottom plate 25 to move, so as to drive the circuit breaker 28 to move, at this time, the moving wheel 35 moves on the lower smooth track 32, and the plug block 45 completely separates from the plug slot 46, and the maintenance can be carried out;

[0078] When power on after maintenance, turn the lead screw 24 to drive the bottom plate 25 to move, so as to drive the circuit breaker 28 to close, and drive the moving wheel 35 to move from the lower smooth track 32 to the upper smooth track 34, when the moving wheel 35 moves to the upper smooth track 34, stop turning the lead screw 24, at this time, one end of the plug block 45 passes through the two closing blocks 401, and the other end enters the plug slot 46, control the clamping part 29 to release the clamping of the circuit breaker 28 again through the button, the gathering part 41 drives the closing block 401 to gather, and drives the top block 49 to gather, then start the cylinder 42 to drive the gathering part 41 to move to the plug block 45 until abutting against it, and drive it to continue to move, at this time, the moving wheel 35 moves on the upper smooth track 34, the circuit breaker 28 is coaxial with the closing part, at the same time, the circuit breaker 28 is separated from the roller 27, the cylinder 42 continues to drive it to move, until the plug block 45 abuts against the end wall of the plug slot 46, the clamping part 29 clamps the circuit breaker 28, and the top block 49 continuously abuts against one end of the plug block 45, so that the circuit breaker 28 always receives a certain pressing force.

[0079] Embodiment two: due to the special physical characteristics of high-voltage circuit, circuit aging, transient phenomena in the process of switch operation and human operation or equipment defects and other factors, there is still a risk of electric shock when turning on the switch high-voltage power supply, and there is still a certain risk when directly turning the master switch 211 with only insulating gloves and other means;

[0080] In order to solve this problem, an anti-electric shock assembly 5 is arranged on the instrument room 101, which is suitable for remotely turning the master switch 211;

[0081] As shown in Figure 1 and Figures 4-5 The anti-electric shock assembly 5 includes two sets of support frame groups 53 fixedly installed on the instrument room 101, each two as a group, a lead screw 55 is rotatably installed on one of the support frame groups 53, a sliding sleeve is threadedly installed on the lead screw 55, and a hand wheel 56 is arranged at the bottom end of the lead screw 55;

[0082] The other set of support frame groups 53 is fixedly installed with a guide rod 54, and a moving frame 51 is slidably arranged on the guide rod 54. One end of the moving frame 51 away from the guide rod 54 is threadedly installed on the lead screw 55, so as to rotate the hand wheel 56 to drive the lead screw 55 to rotate, thereby driving the moving frame 51 to move up and down along the axis of the lead screw 55, and the moving direction is limited under the action of the guide rod 54;

[0083] Two sets of moving grooves 571 are arranged through the moving frame 51, and the two sets of moving grooves 571 are symmetrically arranged above and below. A vertical rod 57 is slidably arranged in each of the two sets of moving grooves 571. Each of the two sets of vertical rods 57 is provided with a pressing ring 58. The two sets of pressing rings 58 can approach or move away from each other, and form a circle for clamping when they approach. A fixed cylinder 511 is arranged in the inside of the circle;

[0084] A first nut (not shown in the figure) is threadedly arranged on each of the two sets of vertical rods 57. The two sets of first nuts are located on the outer surfaces of the two sets of moving grooves 571, so as to avoid the vertical rod 57 from falling to the ground when the vertical rod 57 is pulled to move in the moving groove 571;

[0085] A fixed nut (not shown in the figure) is arranged on the upper vertical rod 57. The fixed nut is located on the lower surface of the upper moving groove 571, and the fixed nut can be rotated to abut against the lower surface of the upper moving groove 571, so as to fix the vertical rod 57;

[0086] Bolts 59 are arranged at both ends of the lower pressing ring 58, and insertion holes adapted to the bolts 59 are arranged at both ends of the upper pressing ring 58. A second nut 510 is arranged on the bolt 59, so as to rotate the second nut 510 to drive the second nut 510 to move along the axis of the bolt 59 until the second nut 510 abuts against both ends of the upper pressing ring 58, thereby fixing the fixed cylinder 511.

[0087] Slidingly arranged inside the fixed cylinder 511 is an extension cylinder 514, one end of which is provided with a clamping block 515, which is provided with a clamping groove adapted to the main switch 211, and a through groove 52 is arranged on the moving frame 51 to avoid the influence of rotating the fixed cylinder 511;

[0088] An elastic chuck 513 adapted to clamp the extension cylinder 514 is arranged at one end of the fixed cylinder 511, and a threaded sleeve 512 is arranged on the elastic chuck 513;

[0089] In the initial state, the threaded sleeve 512 is screwed on the elastic chuck 513, and when the extension cylinder 514 needs to be extended, the threaded sleeve 512 is rotated to move along the axis of the fixed cylinder 511, thereby losing the restriction of the elastic chuck 513, at this time the elastic chuck 513 gradually opens to the four directions, thereby losing the fixation of the extension cylinder 514, after the extension cylinder 514 is pulled out, the threaded sleeve 512 is reset to restrict the elastic chuck 513 again, so as to fix the extension cylinder 514;

[0090] In use, rotate the hand wheel 56 to drive the moving frame 51 to the front of the main switch 211, pull the vertical rod 57 to the front of the main switch 211, and simultaneously pull the fixed cylinder 511 and the clamping block 515 to move, rotate the fixed cylinder 511 to drive the clamping block 515 to rotate along the axis of the vertical rod 57, until it is perpendicular to the main switch 211, rotate the fixed nut to abut the lower surface of the moving groove 571 to fix the fixed cylinder 511, rotate the second nut 510 away from the two ends of the clamping block, at this time the fixed cylinder 511 is adapted to move freely in a circle, hold the fixed cylinder 511 to move to the main switch 211, until the clamping block 515 is clamped into the main switch 211, rotate the fixed cylinder 511 to drive the main switch 211 to rotate through the clamping block 515.

[0091] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A metal-armored withdrawable switchgear, characterized in that: include: The cabinet (1) is equipped with an instrument room (101), a switch room (102) and a power room (103). The switch room (102) is equipped with a circuit breaker (28). The circuit breaker assembly (2) is disposed inside the circuit breaker chamber (102) and has a base plate (25) suitable for supporting the circuit breaker (28) and a mounting cavity (21) suitable for installation. A drive assembly (4) is disposed inside the opening and closing gate chamber (102), the drive assembly (4) comprising: Two sets of plugs (45) are installed on both sides of the circuit breaker (28). At least two sets of square grooves (26) are provided on the base plate (25). Rollers (27) are rotatably installed inside the square grooves (26). Two sets of fixing boxes (43) are installed on the inner wall of the mounting cavity (21). The fixing boxes (43) are respectively provided with slots (46) and mounting grooves (44). Two sets of electric cylinders (42) are installed inside the mounting slot (44), and the output end of the electric cylinder (42) is equipped with a gathering part (41). Two sets of mounting plates (3) are installed on the inner wall of the mounting cavity (21). The mounting plates (3) are provided with slide rails (31). One end of the slide rails (31) has a lower smooth track (32). One end of the lower smooth track (32) is provided with an inclined slide track (33). The end of the inclined slide track (33) away from the lower smooth track (32) is provided with an upper smooth track (34). The circuit breaker (28) is disposed on the upper surface of at least two sets of rollers (27), and fixed rods are installed on both sides of the circuit breaker (28). Moving wheels (35) are rotatably mounted on the fixed rods, and the moving wheels (35) are located on the slide rail (31). The opening and closing gate assembly (2) includes a closed door (22) provided on the mounting cavity (21). Two sets of guide rails (210) are installed on the inner wall of the mounting cavity (21). The interior of the two sets of guide rails (210) is provided with a sliding groove. At least two sets of rollers are rotatably installed on both sides of the base plate (25). The rollers are rolled inside the sliding groove. A lead screw (24) is rotatably installed inside the mounting cavity (21). The base plate (25) is threaded onto the lead screw (24). A nut is provided at one end of the lead screw (24), and a wrench (23) is provided on the nut. The gathering part (41) has two sets of closing blocks (401) that are close to or far apart from each other. The circuit breaker (28) drives the moving wheel (35) to gradually move from the lower smooth track (32) to the upper smooth track (34), and simultaneously drives the insert (45) to gradually approach the slot (46). When the moving wheel (35) enters the upper smooth track (34) from the inclined slide (33), the circuit breaker (28) separates from the roller (27), so that the base plate (25) no longer bears the weight of the circuit breaker (28), and the insert (45) enters the slot (46). When the moving wheel (35) enters the slot (46), the circuit breaker (28) separates from the roller (27), so that the base plate (25) no longer bears the weight of the circuit breaker (28), and the insert (45) enters the slot (46). When entering the upper smooth track (34), one end of the plug (45) enters the slot (46) and moves synchronously with the circuit breaker (28), driving the plug (45) to move in the slot (46). When the other end of the plug (45) passes the gathering part (41), the gathering part (41) drives the two combined brake blocks (401) to move closer to each other and gather together. The electric cylinder (42) is activated, driving the gathering part (41) to move, and then driving the plug (45) to move inside the slot (46).

2. The metal-clad withdrawable switchgear according to claim 1, characterized in that: The highest point of the inclined slide (33) at the end away from the lower smooth slide (32) is flush with the upper surface of the lower smooth slide (32), and a clamping part (29) is provided on the base plate (25).

3. The metal-clad withdrawable switchgear according to claim 1, characterized in that: At least two sets of top posts (48) are slidably arranged on both sets of closing blocks (401). A top block (49) is provided at one end of the top post (48). A spring (47) is provided between the top block (49) and the closing block (401). The spring (47) is sleeved on the outer circumferential surface of the top post (48).

4. The metal-clad withdrawable switchgear according to claim 1, characterized in that: An anti-electric shock component (5) is provided on the instrument room (101). The anti-electric shock component (5) includes two sets of support frame groups (53) installed on the instrument room (101). A lead screw (55) is rotatably installed on one of the support frame groups (53). A sliding sleeve is threaded on the lead screw (55). A handwheel (56) is provided at the bottom end of the lead screw (55).

5. A metal-clad withdrawable switchgear according to claim 4, characterized in that: Another set of support frame groups (53) is equipped with a guide rod (54), and a movable frame (51) is slidably arranged on the guide rod (54). The end of the movable frame (51) away from the guide rod (54) is threaded onto the lead screw (55). Two sets of movable slots (571) are provided through the movable frame (51). The two sets of movable slots (571) are arranged symmetrically up and down. Vertical rods (57) are slidably arranged inside the two sets of movable slots (571). A through slot (52) is provided through the movable frame (51).

6. A metal-clad withdrawable switchgear according to claim 5, characterized in that: Both sets of vertical rods (57) are threaded with a first nut. Both sets of first nuts are located on the upper surface of the two sets of moving grooves (571). One set of vertical rods (57) is provided with a fixing nut, which is located on the lower surface of one set of moving grooves (571). One end of both sets of vertical rods (57) is provided with a pressure ring (58). One set of pressure rings (58) is provided with bolts (59) at both ends. The other set of pressure rings (58) is provided with insertion holes at both ends. The bolts (59) are provided with a second nut (510).

7. A metal-clad withdrawable switchgear according to claim 6, characterized in that: A fixed cylinder (511) is provided between the two sets of pressure rings (58). An extension cylinder (514) is slidably provided inside the fixed cylinder (511). A locking block (515) is provided at one end of the extension cylinder (514). A locking groove is provided on the locking block (515). An elastic clamp (513) is provided at one end of the fixed cylinder (511). A threaded sleeve (512) is provided on the elastic clamp (513).

Images