CN110854730B - High voltage switchgear - Google Patents
High voltage switchgear Download PDFInfo
- Publication number
- CN110854730B CN110854730B CN201911093563.9A CN201911093563A CN110854730B CN 110854730 B CN110854730 B CN 110854730B CN 201911093563 A CN201911093563 A CN 201911093563A CN 110854730 B CN110854730 B CN 110854730B
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- China
- Prior art keywords
- plate
- operating shaft
- interlocking
- isolation
- lower door
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/06—Interlocking mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/10—Interlocking mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
本发明属于电力开关柜技术领域，尤其涉及一种高压开关柜，高压开关柜包括：电气箱，内部形成有隔离室和电缆室，所述隔离室的一侧具有开口，所述电缆室对应所述隔离室设有开口的一侧设有下门；密封罩，穿设有隔离操作轴和接地操作轴；航空插头，设于所述密封罩上，以用于二次接线；联锁机构和指示板，所述联锁机构设于所述电气箱对应所述电缆室的一侧且与所述下门联动，所述指示板分别与所述隔离操作轴和接地操作轴连接并形成联动结构。将操作机构密封在封闭的密封罩内部，内部接线通过航空插头的形式引出，可以起到防水、防尘的作用，机柜具有良好的密封性能，同时实现了模块化安装，方便接线；开关柜符合五防联锁要求，符合安全操作规程。
The present invention belongs to the technical field of electric switch cabinets, and in particular, relates to a high-voltage switch cabinet, which includes: an electrical box, an isolation chamber and a cable chamber are formed inside, one side of the isolation chamber has an opening, and a lower door is provided on the side of the cable chamber corresponding to the isolation chamber with the opening; a sealing cover, through which an isolation operating shaft and a grounding operating shaft are penetrated; an aviation plug is provided on the sealing cover for secondary wiring; an interlocking mechanism and an indicator plate, the interlocking mechanism is provided on the side of the electrical box corresponding to the cable chamber and is linked with the lower door, and the indicator plate is respectively connected with the isolation operating shaft and the grounding operating shaft to form a linkage structure. The operating mechanism is sealed inside the closed sealing cover, and the internal wiring is led out in the form of an aviation plug, which can play a role in waterproofing and dustproofing. The cabinet has good sealing performance, and modular installation is realized at the same time, which is convenient for wiring; the switch cabinet meets the requirements of five-protection interlocking and meets the safety operating procedures.
Description
Technical Field
The invention belongs to the technical field of power switch cabinets, and particularly relates to a high-voltage switch cabinet.
Background
The high-voltage switch cabinet is equipment commonly used in the field of power distribution, and because the high-voltage switch cabinet has higher voltage in the during operation, has very big potential safety hazard to operating personnel, therefore, the security performance of improvement high-voltage switch cabinet is very important. The existing high-voltage switch cabinet has five-prevention functions, but has lower protection level, can only achieve IP4X, and has tightness which is difficult to meet the use requirement.
Disclosure of Invention
The invention aims to provide a high-voltage switch cabinet and aims to solve the technical problem that the protection level of the high-voltage switch cabinet in the prior art is low.
In order to achieve the purpose, the technical scheme adopted by the invention is that the high-voltage switch cabinet comprises:
the electric box is internally provided with an isolation chamber and a cable chamber, one side of the isolation chamber is provided with an opening, and one side of the cable chamber, which corresponds to the isolation chamber and is provided with the opening, is provided with a lower door;
The sealing cover is connected to the opening of the isolation chamber in a sealing way, and the sealing cover is provided with an isolation operation shaft and a grounding operation shaft in a penetrating way;
the aviation plug is arranged on the sealing cover and used for secondary wiring;
the interlocking mechanism is arranged on one side of the electric box, corresponding to the cable chamber, and is in linkage with the lower door, the indicating plate is respectively connected with the isolation operation shaft and the grounding operation shaft to form a linkage structure, when the isolation operation shaft rotates to an isolation position, the indicating plate shields the grounding operation shaft, the interlocking mechanism locks the lower door to the electric box, when the grounding operation shaft rotates to the grounding position, the indicating plate shields the isolation operation shaft, and the interlocking mechanism releases the lower door to enable the lower door to be openable.
Further, the isolation operation shaft and the grounding operation shaft are respectively sleeved with a first sealing element and a second sealing element, the first sealing element and the second sealing element respectively comprise a sealing ring and a sealing ring pressing plate which are sleeved on the isolation operation shaft or the grounding operation shaft, the sealing ring pressing plate is fixedly connected with the inner wall of the sealing cover and tightly presses the sealing ring on the inner wall of the sealing cover so as to seal a gap where the isolation operation shaft or the grounding operation shaft penetrates through the sealing cover.
Further, the seal cover is welded and fixed on the electric box, an extension shell is connected to one side of the electric box corresponding to the cable chamber, the lower door is movably mounted on the extension shell, the top surface of the extension shell is welded with the seal cover and is provided with an installation part exposed relative to the seal cover, and the interlocking mechanism is arranged on the installation part.
Further, the interlocking mechanism comprises an interlocking support, an interlocking plate and a push plate, wherein the interlocking support is installed on the installation part, the interlocking plate and the push plate are both in sliding connection with the interlocking support, and the interlocking plate drives the lower door to close when the push plate moves towards the inner side of the extension shell to be separated from the interlocking plate.
Further, the interlocking mechanism further comprises a reset spring, two free ends of the reset spring are respectively connected with the push plate and the interlocking plate, and when the push plate moves to the inner side of the extension shell to be separated from the interlocking plate, the interlocking plate moves downwards under the combined action of self gravity and the elastic force of the reset spring, so that the lower door is driven to move downwards.
Further, a plurality of guide rail grooves are formed in one side, close to the lower door, of the extension shell, a surrounding edge is arranged on the periphery of the lower door, a plurality of limit posts are arranged on the inner wall of the surrounding edge, and the interlock plate drives the limit posts to slide into the corresponding guide rail grooves when the lower door moves to a preset position, so that the lower door is closed.
Further, a first transmission sheet is sleeved on the isolation operation shaft, a second transmission sheet is sleeved on the grounding operation shaft, a transmission plate is fixed on the indication plate through a connecting plate, the transmission plate is located between the indication plate and the sealing cover, a gap is reserved between the transmission plate and the indication plate, the transmission plate is linked with the first transmission sheet and the second transmission sheet, the isolation operation shaft drives the first transmission sheet to rotate and can drive the transmission plate to move downwards, and the grounding operation shaft drives the second transmission sheet to rotate and can drive the transmission plate to move upwards.
Further, a cam is sleeved on the grounding operation shaft, when the cam rotates to the grounding position along with the grounding operation shaft, the indicating plate shields the isolation operation shaft, the interlocking plate can move upwards, the lower door can be opened, when the cam rotates to the isolation position along with the grounding operation shaft, the indicating plate shields the grounding operation shaft, the interlocking plate is propped by the cam, and the lower door cannot be opened.
Further, the isolation operation shaft is located right above the grounding operation shaft, a first positioning notch matched with the isolation operation shaft is formed in one side of the transmission plate, a second positioning notch matched with the grounding operation shaft is formed in the other side of the transmission plate, the isolation operation shaft slides along the first positioning notch when the transmission plate moves up and down, and the grounding operation shaft slides along the second positioning notch.
Further, the first driving piece and the second driving piece are fan-shaped pieces with gaps, a first bending edge is formed at one end of the driving plate, a second bending edge is formed at the other end of the driving plate, the first bending edge stretches into the gaps of the first driving piece, the second bending edge stretches into the gaps of the second driving piece, the first driving piece drives the driving plate to move upwards through the first bending edge, and the second driving piece drives the driving plate to move downwards through the second bending edge.
The high-voltage switch cabinet has the advantages that the operating mechanism is sealed inside the sealed cover, the internal wiring is led out in the form of the aviation plug, the waterproof and dustproof effects can be achieved, the protection level of the cabinet can be improved to IP65, modular installation is realized, wiring is convenient, the indicating plate is linked with the isolating operating shaft and the grounding operating shaft, and the interlocking mechanism is linked with the lower door, interlocking operation among the isolating switch, the grounding switch and the cabinet door is realized, misoperation is prevented, the safety of an electric person is ensured, the five-prevention interlocking requirement is met, the interlocking part is arranged outside the cabinet, and installation and maintenance are convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a high-voltage switch cabinet according to an embodiment of the present invention;
FIG. 2 is a schematic side view of the high voltage switchgear of FIG. 1;
FIG. 3 is an exploded view of the high voltage switchgear of FIG. 1;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
FIG. 5 is a schematic perspective view of the lower door of FIG. 1;
FIG. 6 is an exploded view of a cover plate on the closure of FIG. 1;
FIG. 7 is a schematic diagram of a portion of the high-voltage switchgear cabinet shown in FIG. 1;
FIG. 8 is a schematic perspective view of an interlock mechanism in the high voltage switchgear of FIG. 1;
FIG. 9 is a schematic side view of an interlock mechanism of the high voltage switchgear of FIG. 1;
FIG. 10 is an exploded view of an interlock mechanism in the high voltage switchgear of FIG. 1;
FIG. 11 is a schematic diagram of a portion of the high-voltage switchgear of FIG. 1;
FIG. 12 is an enlarged schematic view of a portion of the high-voltage switch cabinet shown in FIG. 1 with two shafts in an initial position;
FIG. 13 is a second enlarged schematic view of a portion of the high voltage switch cabinet shown in FIG. 1 with two shafts in an initial position;
FIG. 14 is a third enlarged schematic view of a portion of the two shafts of the high voltage switchgear shown in FIG. 1 in an initial position;
FIG. 15 is a partially enlarged schematic illustration I of the grounding operation shaft of the high voltage switchgear of FIG. 1 rotated to a grounding position;
FIG. 16 is a second enlarged schematic view of a portion of the grounding operation shaft of the high-voltage switch cabinet shown in FIG. 1 rotated to a grounding position;
FIG. 17 is a partially enlarged schematic illustration I of the isolation operating shaft of the high voltage switchgear of FIG. 1 rotated to an isolated position;
fig. 18 is a partially enlarged schematic second view of the isolating shaft of the high-voltage switch cabinet shown in fig. 1 rotated to an isolated position.
Wherein, each reference sign in the figure:
10-electric box, 11-extension shell, 12-isolation operation shaft, 13-grounding operation shaft, 20-sealing cover, 30-interlocking mechanism, 40-indicating plate, 110-side plate, 120-lower door, 121-surrounding edge, 122-guiding column, 123-clamping plate, 130-installation part, 140-protection plate, 111-positioning edge, 112-guiding rail groove, 21-aviation plug, 22-cover plate, 221-sealing ring, 222-sealing ring pressing plate, 223-stud, 31-interlocking bracket, 32-interlocking plate, 33-pushing plate, 34-reset spring, 310-fixing plate, 311-limiting hole, 312-flanging, 313-guiding column, 321-guiding hole, 322-clamping groove, 323-limiting notch, 324-first inserting hole, 331-sliding groove, 332-anti-falling hole, 333-supporting part, 334-pushing part, 335-second inserting hole, 410-driving plate, 420-connecting plate, 430-pressing plate, 441-first driving plate, 442-second driving plate, 450-411, first bending edge, 412-first bending notch, 413-second bending edge, and 413-positioning notch.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1 to 3, in the high-voltage switch cabinet provided by the embodiment of the invention, an instrument room and a cable room are formed inside, and the high-voltage switch cabinet comprises an electric box 10, a sealing cover 20, an aviation plug 21, an interlocking mechanism 30 and an indication board 40. The electric box 10 can be made of stainless steel, an isolation chamber and a cable chamber are formed in the electric box 10, an opening is formed in one side of the isolation chamber, a lower door 120 is arranged on one side, corresponding to the opening, of the isolation chamber, of the cable chamber, the sealing cover 20 is connected to the opening of the isolation chamber in a sealing mode, the sealing cover 20 can be made of stainless steel, and the sealing cover 20 is fixed on the electric box 10 through welding. The seal cover 20 is provided with the isolation operating shaft 12 and the ground operating shaft 13 in a penetrating manner, the isolation operating shaft 12 and the ground operating shaft 13 penetrate out of the side face of the seal cover 20, as shown in fig. 1, a cover plate 22 is arranged on the right side of the seal cover 20, and the isolation operating shaft 12 and the ground operating shaft 13 can rotate relative to the cover plate 22. Aviation plug 21 locates on the sealed cowling 20 for the secondary wiring, aviation plug 21's quantity can set up according to actual wiring demand, and sealed cowling 20 can be formed with the step in one side that is close to the electric box 10 front end, and aviation plug 21 can be installed and be fixed in on this step, add sealed cowling 20 in one side of electric box 10, is equipped with aviation plug 21 that is used for the secondary wiring on the sealed cowling 20 for high tension switchgear has waterproof gas leakage prevention's function, and sealing performance is good. The interlocking mechanism 30 is arranged on one side of the electric box 10 corresponding to the cable chamber and is linked with the lower door 120, the indicating plate 40 is respectively connected with the isolation operation shaft 12 and the grounding operation shaft 13 to form a linkage structure, when the isolation operation shaft 12 rotates to the isolation position, the indicating plate 40 shields the grounding operation shaft 13, the interlocking mechanism 30 locks the lower door 120 to the electric box 10, when the grounding operation shaft 13 rotates to the grounding position, the indicating plate 40 shields the isolation operation shaft 12, and the interlocking mechanism 30 releases the lower door 120 to enable the lower door 120 to be openable. The interlocking mechanism 30 is positioned on the outer side of the electric box 10, is convenient to install and overhaul, and the interlocking structure formed by the indicating plate 40, the isolation operation shaft 12 and the grounding operation shaft 13 and the interlocking between the interlocking mechanism 30 and the lower door 120 can meet the requirement of five-prevention interlocking, so that the operation is safe and reliable.
The high-voltage switch cabinet provided by the embodiment seals the operating mechanism in the sealed cover 20, leads out the internal wiring through the aviation plug 21, can play a role in water resistance and dust resistance, can improve the protection level of the cabinet to IP65, realizes modularized installation and convenient wiring, and realizes the interlocking operation of the isolating switch, the grounding switch and the cabinet door by the linkage of the indicating plate 40 and the isolating operating shaft 12 and the grounding operating shaft 13 and the linkage of the interlocking mechanism 30 and the lower door 120, thereby preventing misoperation, ensuring the safety of electric power personnel, meeting the requirement of five-prevention interlocking, meeting the safety operation rules, and facilitating installation and maintenance by the installation of the interlocking part outside the cabinet.
In an embodiment, as shown in fig. 1 and 6, the isolation operation shaft 12 and the ground operation shaft 13 are respectively sleeved with a first sealing element and a second sealing element, the first sealing element and the second sealing element respectively comprise a sealing ring 221 and a sealing ring pressing plate 222 which are sleeved on the isolation operation shaft 12 or the ground operation shaft 13, and the sealing ring pressing plate 222 is fixedly connected with the inner wall of the sealing cover 20 and presses the sealing ring 221 on the inner wall of the sealing cover 20 so as to seal a gap where the isolation operation shaft 12 or the ground operation shaft 13 penetrates through the sealing cover 20. The inner wall of the cover plate 22 is welded with a plurality of studs 223 along the circumference of the isolation operation shaft 12 and the grounding operation shaft 13, respectively, and a seal ring pressing plate 222 is inserted and fixed to each stud 223 and presses the seal ring 221 against the inner wall of the cover plate 22. By providing the seal ring 221 and the seal ring pressing plate 222, the normal operation of the insulating operation shaft 12 and the grounding operation shaft 13 is ensured while the water resistance is ensured.
A positioning and mounting structure can be arranged between the sealing cover 20 and the cover plate 22, for example, a plurality of mounting columns are arranged on one side of the sealing cover 20, a plurality of positioning holes are correspondingly formed in the cover plate 22, and waterproof adhesive tapes can be adhered to the periphery of the cover plate 22 after the cover plate 22 is covered, so that water can be prevented from entering. The operation mechanism is sealed inside the sealed cover 20, the internal wiring is led out through the aviation plug 21, the waterproof and dustproof effects can be achieved, modular installation is achieved, and wiring is facilitated.
In an embodiment, as shown in fig. 1 and 3, the seal cover 20 is welded and fixed on the electric box 10, one side of the electric box 10 corresponding to the cable chamber is connected with the extension shell 11, the electric box 10, the seal cover 20 and the extension shell 11 together form a cabinet, the lower door 120 is movably mounted on the extension shell 11, the top surface of the extension shell 11 is welded with the seal cover 20 and is formed with a mounting part 130 exposed relative to the seal cover 20, the interlocking mechanism 30 is arranged on the mounting part 130, the interlocking mechanism 30 is positioned below the two operation shafts, the mounting part 130 is provided with an avoidance hole, and the movable part of the interlocking mechanism 30 can move in the avoidance hole.
In an embodiment, as shown in fig. 7 and 8, the interlocking mechanism 30 includes an interlocking bracket 31, an interlocking plate 32 and a push plate 33, wherein the interlocking bracket 31 is mounted on the electrical box 10, and specifically can be fixed on a mounting portion 130 of the extension housing 11, the interlocking plate 32 and the push plate 33 are both slidably connected to the interlocking bracket 31, the interlocking plate 32 drives the lower door 120 to close when the push plate 33 moves backward to be separated from the interlocking plate 32, the backward movement at this time means that the push plate 33 moves inward of the extension housing 11, and the interlocking plate 32 moves upward to be clamped with the push plate 33 to drive the lower door 120 to move, so that a limit post of the lower door 120 is separated from the guide rail groove 112, and the lower door 120 can be opened.
In an embodiment, as shown in fig. 1 and fig. 3 to 5, a plurality of guide rail grooves 112 are formed on one side of the extension housing 11 near the lower door 120, a surrounding edge 121 is formed on the periphery of the lower door 120, the surrounding edges 121 on the left and right sides are respectively adapted to be connected with the positioning edges 111 of the side plates 110, a plurality of guide posts 122 are disposed on the inner wall of the surrounding edge 121, and when the interlocking plate 32 drives the lower door 120 to move to a predetermined position, each guide post 122 slides into each corresponding guide rail groove 112, so that the lower door 120 is closed. The extension shell 11 comprises a top plate and two side plates 110, the sealing cover 20 is fixed on the top plate, a protection plate 140 is arranged on one side, close to the lower door 120, of the top plate upwards, the protection plate 140 can play a role in protecting the interlocking mechanism 30, positioning edges 111 are respectively arranged on the side plates 110 on two sides in an extending mode, a plurality of guide rail grooves 112 are symmetrically formed in each positioning edge 111, the guide rail grooves 112 are special-shaped grooves, each guide rail groove 112 comprises a horizontal section and a vertical section which are communicated, the vertical section is located below the horizontal section, and when the lower door 120 is pushed inwards, the guide column 122 firstly passes through the horizontal section and then slides into the vertical section, and therefore the guide column is installed on the extension shell 11, and the process of opening the lower door 120 is opposite.
In an embodiment, as shown in fig. 9, the interlocking mechanism 30 further includes a return spring 34, two free ends of the return spring 34 are respectively connected to the push plate 33 and the interlocking plate 32, when the push plate 33 moves backward to be separated from the interlocking plate 32, the interlocking plate 32 moves downward under the combined action of the self gravity and the elastic force of the return spring 34, so as to drive the lower door 120 to move downward, so that the lower door 120 is locked to the electrical box 10, and at this time, the lower door 120 cannot be opened.
As shown in fig. 3 and 8-10, the interlocking bracket 31 includes a fixing plate 310 and a flange 312, the fixing plate 310 is horizontally fixed on the mounting portion 130 of the extension shell 11 by a screw, a limiting hole 311 is formed in the fixing plate 310, the width of the equal diameter portion is adapted to the width of the interlocking plate 32, the interlocking plate 32 is vertically inserted into the equal diameter portion of the limiting hole 311, the width of the variable diameter portion is gradually reduced from the direction close to the equal diameter portion to the direction far away from the equal diameter portion, the width of one side of the variable diameter portion close to the equal diameter portion is equal to the width of the equal diameter portion, the length of the equal diameter portion is smaller than the length of the variable diameter portion, the flange 312 is formed by upwardly folding the fixing plate 310 from the limiting hole 311, the flange 312 is perpendicular to the fixing plate 310, two guide posts 313 are arranged at intervals at one end, close to the top, of the flange 312 faces the interlocking plate 32, and the two guide posts 313 are distributed at intervals along the vertical direction.
The interlocking plate 32 is vertically provided with a strip-shaped guide hole 321, two guide posts 313 are slidably inserted into the guide hole 321, one end of the interlocking plate 32 close to the bottom is provided with a horizontally extending clamping groove 322, the opening of the clamping groove 322 faces one side of the lower door 120, the clamping groove 322 is in reducing arrangement, the width of the clamping groove 322 gradually increases from the side far away from the lower door 120 to the side close to the lower door 120, the position, close to the top, of the inside of the lower door 120 is horizontally extended and provided with a clamping plate 123, the clamping plate 123 is slidably inserted into the clamping groove 322 of the interlocking plate 32, and therefore the interlocking plate 32 correspondingly moves under the driving of the lower door 120 by means of the cooperation of the clamping plate 123 and the clamping groove 322 when moving up and down.
The push plate 33 is vertically arranged, one side of the push plate 33 is provided with a horizontally arranged chute 331, the fixed plate 310 of the interlocking bracket 31 is slidably inserted into the chute 331, the top of the push plate 33 is bent to form a horizontal jacking part 333, one side of the push plate 33 is positioned between the flange 312 and the interlocking plate 32, the push plate 33 is provided with an anti-drop hole 332 corresponding to the position of the guide post 313 at the top, and one side of the push plate 33, which is close to the lower door 120, is provided with a pushing part 334 which is propped against the lower door 120. The side of the interlocking plate 32 far away from the lower door 120 is provided with a limit notch 323, when the interlocking plate 32 moves upwards to a preset position, the interlocking plate 32 drives the lower door 120 to move upwards, each limit post of the lower door 120 is separated from the corresponding guide rail groove 112 at two sides of the extension shell 11, at this time, the lower door 120 can be opened, and in the process, the top 333 of the push plate 33 is always separated from the limit notch 323 of the interlocking plate 32; the first jack 324 is arranged at the position of the interlocking plate 32 close to the guide post 313 at the top, the second jack 335 is arranged at the position of the push plate 33 close to the top holding part 333, the return spring 34 adopts a torsion spring, the torsion spring comprises a spiral body, a first torsion arm and a second torsion arm, the spiral body is sleeved on the guide post 313 at the top, the two torsion arms are arranged at two sides of the spiral body in a substantially parallel and spatially staggered mode, the free end of the first torsion arm is hooked on the interlocking plate 32 through the first jack 324, the free end of the second torsion arm is hooked on the push plate 33 through the second jack 335, the lower door 120 is pushed inwards by an external force to push the push plate 33 against the push part 334, so that the push plate 33 moves inwards until the top holding part 333 completely leaves the limit notch 323 of the interlocking plate 32, the interlocking plate 32 moves downwards under the action of the return spring 34 and self gravity, and the limit posts on the lower door 120 also move downwards, so that the limit posts on the lower door 120 enter the corresponding guide rails 112 at two sides of the extension shell 11, and the lower door 120 can not be opened.
In an embodiment, as shown in fig. 7, 11 and 14, a first driving plate 441 is sleeved on the isolation operating shaft 12, a second driving plate 442 is sleeved on the ground operating shaft 13, a driving plate 410 is fixed on the indicating plate 40 through a connecting plate 420, the driving plate 410 is located between the indicating plate 40 and the sealing cover 20, the indicating plate 40 is vertically arranged, the connecting plate 420 is perpendicular to the indicating plate 40 and the driving plate 410 respectively, and the indicating plate 40, the connecting plate 420 and the driving plate 410 can be integrally arranged or fastened through screws. The transmission plate 410 and the indication plate 40 are spaced, the indication plate 40, the isolation operation shaft 12 and the grounding operation shaft 13 are spaced, the transmission plate 410 is linked with the first transmission plate 441 and the second transmission plate 442, the transmission plate 410 can be driven to move downwards when the isolation operation shaft 12 drives the first transmission plate 441 to rotate, and the transmission plate 410 can be driven to move upwards when the grounding operation shaft 13 drives the second transmission plate 442 to rotate.
In one embodiment, as shown in fig. 3, 7 and 11, the grounding operation shaft 13 is sleeved with a cam 450, the whole of the cam 450 is in a shape of a fan, the cam 450 is provided with a large diameter end and a small diameter end which are opposite, when the cam 450 rotates to the grounding position along with the grounding operation shaft 13, the indication plate 40 shields the grounding operation shaft 12, the interlocking plate 32 can move upwards, the lower door 120 can be opened, when the cam 450 rotates to the isolating position along with the grounding operation shaft 12, the indication plate 40 shields the grounding operation shaft 13, the interlocking plate 32 is propped by the cam 450 and cannot move upwards, and the lower door 120 cannot be opened.
In an embodiment, as shown in fig. 7 and 11, the isolation operation shaft 12 is located right above the grounding operation shaft 13, a first positioning notch 413 adapted to the isolation operation shaft 12 is formed on one side of the transmission plate 410, a second positioning notch 414 adapted to the grounding operation shaft 13 is formed on the other side of the transmission plate 410, both the first positioning notch 413 and the second positioning notch 414 are vertically formed, the first positioning notch 413 is formed at the upper end of the transmission plate 410, the second positioning notch 414 is formed at the lower end of the transmission plate 410, the isolation operation shaft 12 slides along the first positioning notch 413 when the transmission plate 410 moves up and down, and the grounding operation shaft 13 slides along the second positioning notch 414.
A pressing plate 430 is further arranged between the indication plate 40 and the transmission plate 410, through holes are respectively formed in positions of the pressing plate 430 corresponding to the isolation operation shaft 12 and the grounding operation shaft 13, the isolation operation shaft 12 and the grounding operation shaft 13 respectively penetrate through the through holes corresponding to the pressing plate 430, and the pressing plate 430 plays an auxiliary positioning role, so that the transmission plate 410 is kept parallel to the vertical direction in the up-down movement process.
In an embodiment, as shown in fig. 11 and 12, the first driving piece 441 and the second driving piece 442 are fan-shaped pieces, a first bending edge 411 is formed at one end of the driving plate 410, a second bending edge 412 is formed at the other end, the first bending edge 411 extends into a notch of the first driving piece 441, the second bending edge 412 extends into a notch of the second driving piece 442, the first driving piece 441 drives the driving plate 410 to move upwards through the first bending edge 411, and the second driving piece 442 drives the driving plate 410 to move downwards through the second bending edge 412.
As shown in fig. 12 to 14, the first driving piece 441 is a fan-shaped piece with a 90 degree gap, the second driving piece 442 is a fan-shaped piece with a 180 degree gap, and the first bending edge 411 and the second bending edge 412 are located on opposite sides of the driving piece. When the isolation operating shaft 12 and the grounding operating shaft 13 are located at the initial positions, the notch of the first transmission plate 441 is inclined upward to the right, the notch of the second transmission plate 442 is downward, the indicating plate 40 is located at the middle position, the large-diameter end of the cam 450 is downward, the small-diameter end of the cam 450 is upward, the isolation operating shaft 12 and the grounding operating shaft 13 are exposed out of the indicating plate 40, the large-diameter end of the cam 450 supports against the interlocking plate 32, so that the interlocking plate 32 cannot move upward, and the lower door 120 cannot be opened.
As shown in fig. 15 and 16, when the ground operation shaft 13 rotates counterclockwise to the ground position, the switch is grounded and closed, the second transmission plate 442 moves the transmission plate 410 upward through the second bending strap, the indication plate 40 blocks the upper isolation operation shaft 12, the isolation operation shaft 12 cannot be operated at this time, the large diameter end of the cam 450 rotates to the upward direction, the interlocking plate 32 can move upward, and the lower door 120 can be opened at this time.
As shown in fig. 17 and 18, when the isolating shaft 12 rotates clockwise to the isolating position, the first driving plate 441 drives the driving plate 410 to move downward through the first bending edge 411, the indicating plate 40 blocks the lower ground operating shaft 13, the ground operating shaft 13 cannot operate, and at this time, the large diameter end of the cam 450 rotates to the downward direction, the interlocking plate 32 cannot move upward, and thus the lower door 120 cannot be opened.
The application solves the problem of lower protection level of the high-voltage switch cabinet, the protection level can reach IP65, the aviation plug 21 is arranged on the sealing cover 20 to solve the problem of leading out internal wiring, the interlocking of the switch is designed on the outer side of the sealing cover 20, the installation and the maintenance can be convenient, meanwhile, the interlocking of the lower door 120 is realized by adopting a mechanical hard interlocking mode, and the design is safer and more reliable.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
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| CN201911093563.9A CN110854730B (en) | 2019-11-11 | 2019-11-11 | High voltage switchgear |
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| CN201911093563.9A CN110854730B (en) | 2019-11-11 | 2019-11-11 | High voltage switchgear |
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| CN110854730B true CN110854730B (en) | 2025-07-15 |
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| CN116844882B (en) * | 2020-04-22 | 2024-02-06 | 广州亿盛电气科技有限公司 | High-tightness pneumatic cabinet load switch operating mechanism and switching-on and switching-off method |
| CN114400569B (en) * | 2022-01-07 | 2025-08-19 | 北京四方继保工程技术有限公司 | Ring main unit full-sealed operating mechanism chamber |
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| CN211126779U (en) * | 2019-11-11 | 2020-07-28 | 莱福士电力电子设备（深圳）有限公司 | High-voltage switch cabinet |
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| GB410207A (en) * | 1932-11-17 | 1934-05-17 | Reyrolle A & Co Ltd | Improvements in or relating to metal-clad electric switchgear |
| JPH02158019A (en) * | 1988-12-09 | 1990-06-18 | Fuji Electric Co Ltd | mechanical interlock device |
| CN102709103B (en) * | 2012-05-04 | 2014-08-27 | 余姚市万佳电气有限公司 | Switch on-off spring operating mechanism of grounded switch and isolation switch |
| CN104409273B (en) * | 2014-10-29 | 2016-07-06 | 浙江道笃智能开关有限公司 | Pole type High-Voltage Electrical Appliances cubicle switch |
| CN207269108U (en) * | 2017-10-29 | 2018-04-24 | 默飓电气有限公司 | A kind of new switchgear |
| CN207938514U (en) * | 2018-03-07 | 2018-10-02 | 余姚市华宇电器有限公司 | A kind of output is walked around the single motor three position mechanism at angle more |
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| CN211126779U (en) * | 2019-11-11 | 2020-07-28 | 莱福士电力电子设备（深圳）有限公司 | High-voltage switch cabinet |
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Effective date of registration: 20250618 Address after: 518000 Guangdong Province Shenzhen City Yantian District Shatoujiao Street Tianshen Community Shayan Road 3018 Yantian Modern Industrial Service Center (Phase I) Building A Room 25D Applicant after: Kyushu Taihao (Shenzhen) Electric Power Technology Co.,Ltd. Country or region after: China Address before: 518000 Guangdong Province Shenzhen City Longhua New District Guanlan Street Guansheng Fifth Road No.5 Guanlan High-tech Industrial Park Taile (Shenzhen) Industrial Park Second Floor North Side of Building One Applicant before: RAFFLES POWER ELECTRONIC EQUIPMENT (SHENZHEN) Co.,Ltd. Country or region before: China |
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