CN223285482U - Inflatable cabinet - Google Patents
Inflatable cabinetInfo
- Publication number
- CN223285482U CN223285482U CN202422228396.7U CN202422228396U CN223285482U CN 223285482 U CN223285482 U CN 223285482U CN 202422228396 U CN202422228396 U CN 202422228396U CN 223285482 U CN223285482 U CN 223285482U
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- Prior art keywords
- connecting rod
- isolating switch
- isolating
- cabinet body
- cabinet
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Abstract
本实用新型属于电力设备技术领域，尤其涉及一种充气柜。本实用新型提供的充气柜内设有断路器、第一隔离开关和第二隔离开关，第二隔离开关连接有液压传动单元，液压传动单元驱动第二隔离开关处于连接第二接线端和第二出线座的合闸位置，或者驱动第二隔离开关处于断开第二接线端和第二出线座的分闸位置，或者驱动第二隔离开关连接第二接地触头，在电力系统出现短路故障时，液压传动单元相比现有的丝杆传动结构响应速度快，能实现出线侧的隔离开关快速接地，降低了因短路故障等因素对充气柜或者电力系统的电气元件的损伤程度。
The utility model belongs to the technical field of power equipment, and in particular relates to an inflatable cabinet. The inflatable cabinet provided by the utility model is provided with a circuit breaker, a first isolating switch, and a second isolating switch. The second isolating switch is connected to a hydraulic transmission unit. The hydraulic transmission unit drives the second isolating switch to a closed position connecting the second terminal and the second outlet seat, or drives the second isolating switch to an open position disconnecting the second terminal and the second outlet seat, or drives the second isolating switch to connect to a second grounding contact. When a short circuit fault occurs in the power system, the hydraulic transmission unit has a faster response speed than the existing screw transmission structure, can realize the rapid grounding of the isolating switch on the outlet side, and reduces the degree of damage to the electrical components of the inflatable cabinet or the power system due to factors such as short circuit faults.
Description
Technical Field
The utility model relates to the technical field of power equipment, in particular to an inflatable cabinet.
Background
The inflatable cabinet is an important component part in power equipment, has been widely applied to various large power fields, and is internally provided with a circuit breaker and a disconnecting switch. In some application areas, for example for a 72.5kV power system, it is often necessary that the gas-filled cabinet is provided with an upper disconnector, which corresponds to the inlet side of the gas-filled cabinet, a lower disconnector, which corresponds to the outlet side of the gas-filled cabinet, and a circuit breaker. When a short circuit fault occurs in the power system, the circuit breaker is firstly disconnected, then the lower isolating switch and the upper isolating switch are driven to be disconnected, but only the lower isolating switch is connected with the grounding contact, so that the power supply is cut off, and the use requirements of some specific application scenes cannot be met. In addition, in the prior art, the driving transmission device for driving the lower isolating switch is of a screw rod transmission structure, the transmission response speed is low, the lower isolating switch cannot be grounded rapidly, and the risk of damaging an air charging cabinet or an electric element of a power system due to factors such as short circuit faults is improved.
Disclosure of utility model
The utility model aims to provide an inflatable cabinet, which can realize the rapid grounding of a second isolating switch and reduce the damage degree of the inflatable cabinet or electric elements of a power system due to factors such as short circuit faults and the like.
To achieve the purpose, the utility model adopts the following technical scheme:
an inflatable cabinet, comprising:
The cabinet body is provided with a first wiring terminal and a second wiring terminal, and a first grounding contact and a second grounding contact are arranged in the cabinet body;
The circuit breaker is arranged in the cabinet body and comprises a first wire outlet seat and a second wire outlet seat;
the first isolating switch is arranged in the cabinet body and is used for connecting or disconnecting the first wiring terminal and the first wire outlet seat or connecting with the first grounding contact;
The second isolating switch is arranged in the cabinet body and is connected with a hydraulic transmission unit, and the hydraulic transmission unit is used for driving the second isolating switch to connect or disconnect the second wiring terminal and the second wire outlet seat or driving the second isolating switch to be connected with the second grounding contact.
As an optional technical scheme of the above-mentioned gas-filled tank, the first isolating switch is connected with the hydraulic transmission unit, and the hydraulic transmission unit is used for driving the first isolating switch to connect or disconnect the first wiring terminal and the first wire outlet seat, or for driving the first isolating switch to connect with the first ground contact.
As an optional solution of the foregoing air-filled cabinet, the hydraulic transmission unit includes:
The hydraulic cylinder is connected with the cabinet body;
The piston rod is arranged in the hydraulic cylinder in a sliding way, and the other end of the piston rod is arranged at the outer side of the hydraulic cylinder;
the connecting rod assembly is characterized in that one end of the connecting rod assembly is fixedly connected with the other end of the piston rod, the other end of the connecting rod assembly is in sliding connection with the second isolating switch or the first isolating switch, and the piston rod slides relative to the hydraulic cylinder, so that the connecting rod assembly drives the second isolating switch or the first isolating switch to rotate.
As an optional technical scheme of the air charging cabinet, the second isolating switches and the first isolating switches are respectively provided with a plurality of second isolating switches, and long holes are respectively formed in each second isolating switch and each first isolating switch;
The connecting rod assembly comprises a first connecting rod, a second connecting rod and a side connecting rod, wherein the first connecting rod is arranged at intervals parallel to the second connecting rod, the first connecting rod is connected with the second connecting rod through the side connecting rod, the first connecting rod is fixedly connected with the other end of the piston rod, the second connecting rod sequentially penetrates through a plurality of long holes of the second isolating switch or a plurality of long holes of the first isolating switch, the second connecting rod is in sliding connection with the long holes, and the second connecting rod is an insulating piece.
As an optional technical solution of the above-mentioned air-charging cabinet, the second isolating switch includes a second isolating contact piece, one end of the second isolating contact piece is hinged with the second terminal, and the other end of the second isolating contact piece is connected with the second wire outlet seat or the second grounding contact;
The first isolating switch comprises a first isolating contact piece, one end of the first isolating contact piece is hinged with the first wiring end, and the other end of the first isolating contact piece is used for being connected with the first wire outlet seat or the first grounding contact.
As an alternative technical scheme of the above-mentioned gas-filled cabinet, the first isolation contact piece and the second isolation contact piece each include two blades, two blades are parallel and arranged at intervals, first ends of the two blades are hinged with the first wiring terminal or the second wiring terminal, second ends of the two blades of the first isolation contact piece are used for clamping the first wire outlet seat or the first grounding contact, and second ends of the two blades of the second isolation contact piece are used for clamping the second wire outlet seat or the second grounding contact.
As an optional technical scheme of the air charging cabinet, each blade is provided with a first long groove, and the first long grooves penetrate through the second end parts of the blades.
As an alternative solution of the foregoing air-charging cabinet, the second ground contact includes an L-shaped ground contact plate, a first end of the ground contact plate is connected to the cabinet body, a second end of the ground contact plate can be disposed between the two blades, a second long groove is disposed at the second end of the ground contact plate, and the second long groove penetrates through an end portion of the second end of the ground contact plate.
As an optional technical scheme of the inflatable cabinet, one end of the circuit breaker is connected with the inner side wall of the cabinet body, and the extending direction of the other end of the circuit breaker is parallel to the vertical direction when the cabinet body is installed.
As an optional technical scheme of the air charging cabinet, the cabinet body is provided with at least two groups of second wiring terminals, the circuit breaker is provided with second wire outlet seats corresponding to each group of second wiring terminals, the cabinet body is internally provided with second grounding contacts corresponding to each group of second wiring terminals, and each group of second wiring terminals is respectively and correspondingly provided with a second isolating switch.
The utility model has the beneficial effects that:
The circuit breaker, the first isolating switch and the second isolating switch are arranged in the air charging cabinet, and the first isolating switch and the second isolating switch are respectively provided with a closing position, a separating position and a grounding position so as to realize the connection, disconnection or grounding of a circuit in the air charging cabinet, and when a short circuit fault occurs in a power system or the power system is overhauled, the first isolating switch and the second isolating switch can be grounded, and have the capacities of closing short circuit current and opening and closing induced current, so that the air charging cabinet can effectively play a role in protecting, the safety performance of the air charging cabinet is improved, and the safety performance of the power system is further improved; the second isolating switch is connected with the hydraulic transmission unit, the hydraulic transmission unit drives the second isolating switch to be at a closing position for connecting the second wiring end and the second wire outlet seat, or drives the second isolating switch to be at a separating position for disconnecting the second wiring end and the second wire outlet seat, or drives the second isolating switch to be connected with the second grounding contact, when a short circuit fault occurs in the electric power system, the hydraulic transmission unit has a fast response speed compared with the existing screw transmission structure, the second isolating switch on the wire outlet side can be grounded quickly, the phenomenon of fusion welding caused by burning and ablating the second isolating switch for a long time is avoided, and the damage degree of the electric elements of the inflatable cabinet or the electric power system due to the short circuit fault and other factors is reduced.
Drawings
FIG. 1 is an isometric view of an internal structure of an inflatable cabinet according to one embodiment of the utility model;
FIG. 2 is a schematic diagram of a hydraulic transmission unit according to an embodiment of the present utility model;
FIG. 3 is a front view of the internal structure of an inflatable cabinet according to an embodiment of the utility model;
FIG. 4 is an isometric view of the internal structure of an inflatable cabinet according to another embodiment of the utility model;
fig. 5 is a schematic view showing the structure of a first terminal and a second terminal according to an embodiment of the present utility model.
In the figure:
1. The device comprises a cabinet body, a first grounding contact, a second grounding contact, a circuit breaker, a first disconnecting switch, a second disconnecting switch, a hydraulic transmission unit and a hydraulic transmission unit, wherein the cabinet body comprises a first grounding contact, a second grounding contact, a circuit breaker, a first disconnecting switch, a second disconnecting switch and a hydraulic transmission unit;
11. a first terminal 12, a second terminal;
21. A third elongated slot;
31. a ground contact plate 32, a second elongated slot;
41. 42, the second wire outlet seat;
51. First isolation contact piece, 511, blade, 512, first long groove, 513, long groove;
61. A second isolation contact;
71. Hydraulic cylinder 72, piston rod 73, connecting rod assembly 731, first connecting rod 732, second connecting rod 733 and side connecting rod.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through 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 utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1, the embodiment provides an inflatable cabinet, which can be applied to a tower of an offshore wind turbine. The inflatable cabinet comprises a cabinet body 1, a circuit breaker 4, a first isolating switch 5 and a second isolating switch 6. The cabinet body 1 is provided with a first wiring terminal 11 and a second wiring terminal 12, and a first grounding contact 2 and a second grounding contact 3 are arranged in the cabinet body 1. The circuit breaker 4, the first isolating switch 5 and the second isolating switch 6 are all arranged in the cabinet body 1, and the circuit breaker 4 comprises a first wire outlet seat 41 and a second wire outlet seat 42. The first disconnecting switch 5 is used for connecting or disconnecting the first terminal 11 and the first wire outlet seat 41, or for connecting with the first ground contact 2. The second isolating switch 6 is connected with a hydraulic transmission unit 7, and the hydraulic transmission unit 7 is used for driving the second isolating switch 6 to connect or disconnect the second wiring terminal 12 and the second wire outlet seat 42, or is used for driving the second isolating switch 6 to be connected with the second grounding contact 3.
The first isolating switch 5 and the second isolating switch 6 are respectively provided with a closing position, a separating brake position and a grounding position, so that the connection and disconnection of a circuit in the air charging cabinet or the grounding of the circuit are realized, when a short circuit fault occurs in a power system or the power system is overhauled, the first isolating switch 5 and the second isolating switch 6 can be grounded, the first isolating switch 5 and the second isolating switch 6 are respectively provided with the capacity of closing the short circuit current and the opening and closing induced current, the application scenes with specific requirements can be met, the air charging cabinet can effectively play a role in protecting, the safety performance of the air charging cabinet is improved, the safety performance of a power system is further improved, the second isolating switch 6 is connected with a hydraulic transmission unit 7, the hydraulic transmission unit 7 drives the second isolating switch 6 to be positioned at the closing position for connecting the second wiring terminal 12 and the second wire outlet seat 42, or drives the second isolating switch 6 to be positioned at the separating brake position for disconnecting the second wiring terminal 12 and the second wire outlet seat 42, or drives the second isolating switch 6 to be connected with the second grounding contact 3, when the power system has the short circuit fault, compared with the existing lead screw transmission structure, the response speed of the air charging cabinet can effectively play a role in protecting, the safety performance of the air charging cabinet is improved, the electric charging cabinet is prevented from being damaged due to the fact that the second wire lead screw is burnt down, the electric connection of the second isolating switch 6 is damaged due to the arc welding fault, and the long-down time of the electric charging system is avoided, and the electric connection fault is damaged due to the fact that the electric connection to the fault is caused to the fact to the electric cable is caused to the fact to the electric charging system.
Illustratively, if the first terminal 11 is an incoming terminal, the second terminal 12 is an outgoing terminal. Conversely, if the first terminal 11 is an outgoing terminal, the second terminal 12 is an incoming terminal. In this embodiment, the first terminal 11 is an incoming terminal, and the second terminal 12 is an outgoing terminal.
In some embodiments, the first disconnecting switch 5 is connected to a hydraulic transmission unit 7 (the first disconnecting switch 5 is connected to the hydraulic transmission unit 7 is not shown in the figure), and the hydraulic transmission unit 7 is used to drive the first disconnecting switch 5 to connect or disconnect the first terminal 11 and the first wire outlet seat 41, or is used to drive the first disconnecting switch 5 to connect with the first ground contact 2. When the electric power system has short circuit fault, the hydraulic transmission unit 7 has a response speed which is higher than that of the existing screw transmission structure, the first isolating switch 5 can be grounded quickly, the phenomenon that the first isolating switch 5 is burnt and ablated for a long time to generate fusion welding is avoided, and the damage degree of the electric elements of the inflatable cabinet or the electric power system due to the short circuit fault and other factors is further reduced.
Referring to fig. 1 and 2, the hydraulic transmission unit 7 optionally includes a hydraulic cylinder 71, a piston rod 72, and a link assembly 73. The hydraulic cylinder 71 is connected to the cabinet 1, and specifically, the hydraulic cylinder 71 is provided inside the cabinet 1. One end of the piston rod 72 is slidably disposed in the hydraulic cylinder 71, and the other end of the piston rod 72 is disposed outside the hydraulic cylinder 71. One end of the connecting rod assembly 73 is fixedly connected with the other end of the piston rod 72, the other end of the connecting rod assembly 73 is in sliding connection with the second isolating switch 6 or the first isolating switch 5, and the piston rod 72 slides relative to the hydraulic cylinder 71 so that the connecting rod assembly 73 drives the second isolating switch 6 or the first isolating switch 5 to rotate. Hydraulic oil and other liquids can be poured into the hydraulic cylinder 71, and the change amount of the liquid in the hydraulic cylinder 71 can change the position of the piston rod 72 in the hydraulic cylinder 71, so that the action of the driving connecting rod assembly 73 is realized. The hydraulic transmission unit 7 has a simple structure, and the connecting rod assembly 73 is driven in a direct-acting manner, so that the response speed is high.
In other embodiments, the first disconnecting switch 5 is connected to a screw transmission mechanism, and the first disconnecting switch 5 is driven to connect or disconnect the first terminal 11 and the first wire outlet seat 41 by the screw transmission mechanism, or is used for driving the first disconnecting switch 5 to connect with the first ground contact 2. The screw drive is of the prior art and is not particularly limited herein.
The second isolating switch 6 and the first isolating switch 5 are respectively provided with a plurality of three-phase power supply, which is normally connected into and output from the inflatable cabinet, so that for the condition of one group of input and one group of output, the second isolating switch 6 and the first isolating switch 5 are respectively provided with three, corresponding to the first isolating switch 5, the first wiring terminal 11, the first wire outlet seat 41 and the first grounding contact 2 are respectively provided with three, corresponding to the second isolating switch 6, and the second wiring terminal 12, the second wire outlet seat 42 and the second grounding contact 3 are respectively provided with three. Each second isolating switch 6 and each first isolating switch 5 are respectively provided with a long hole 513. The link assembly 73 includes a first link 731, a second link 732, and a side link 733, where the first link 731 and the second link 732 are disposed in parallel and spaced apart, and the first link 731 is connected to the second link 732 through the side link 733, the first link 731 is fixedly connected to the other end of the piston rod 72, the second link 732 is sequentially inserted into the long holes 513 of the plurality of second isolating switches 6 or the long holes 513 of the plurality of first isolating switches 5, and the second link 732 is slidably connected to the long holes 513, and the second link 732 is an insulating member. The second link 732 serves to connect the plurality of first disconnectors 5 and second disconnectors 6, and allows the plurality of first disconnectors 5 and second disconnectors 6 to operate synchronously. The first link 731 and the side link 733 may also be insulators, further improving the insulating performance of the link assembly 73.
The second isolating switches 6 and the first isolating switches 5 are respectively provided with three side connecting rods 733, at least one side connecting rod 733 is arranged between every two adjacent second isolating switches 6 or every two adjacent first isolating switches 5, and the second connecting rods 732 are uniformly stressed while the first connecting rods 731 and 732 are connected, so that a plurality of second isolating switches 6 or a plurality of first isolating switches 5 can be smoothly driven to rotate.
As shown in fig. 3, in some embodiments, the second isolating switch 6 includes a second isolating contact member 61, one end of the second isolating contact member 61 is hinged with the second terminal 12, and the other end of the second isolating contact member 61 is used to connect with the second outlet holder 42 or the second ground contact 3. When the other end of the second isolation contact piece 61 is connected with the second grounding contact 3, the second wiring end 12 can be directly grounded, and the second wiring end 12 does not need to be additionally provided with a grounding switch and other parts correspondingly, so that the structure is simple, and the cost is reduced.
The first isolating switch 5 includes a first isolating contact member 51, one end of the first isolating contact member 51 is hinged with the first terminal 11, and the other end of the first isolating contact member 51 is used for connection with the first outlet seat 41 or the first ground contact 2. When the other end of the first isolation contact piece 51 is connected with the first grounding contact 2, the first wiring end 11 can be directly grounded, and the first wiring end 11 does not need to be additionally provided with a grounding switch and other parts correspondingly, so that the structure is simple, and the cost is reduced.
The arrangement mode of the second isolation contact piece 61 and the first isolation contact piece 51 enables the internal structure of the whole air charging cabinet to be in copper bar-free design, contact points are reduced, the air charging cabinet is more reliable in operation and more compact in structure, the size of the air charging cabinet is reduced, and the application scene requirement of a small space is met.
Alternatively, the first isolation contact piece 51 and the second isolation contact piece 61 each include two blades 511, the two blades 511 are arranged in parallel and spaced apart, first ends of the two blades 511 are hinged to the first terminal 11 or the second terminal 12, second ends of the two blades 511 of the first isolation contact piece 51 are used for clamping the first wire outlet seat 41 or the first ground contact 2, and second ends of the two blades 511 of the second isolation contact piece 61 are used for clamping the second wire outlet seat 42 or the second ground contact 3. The first isolation contact piece 51 and the second isolation contact piece 61 respectively adopt a mode that two blades 511 are connected in parallel, the two blades 511 can reduce the current heating value and the capacity of bearing short-circuit current through shunting, the requirements on the contact clamping force of the first isolation contact piece 51 and the second isolation contact piece 61 can be reduced, and meanwhile, the mechanical strength requirements of the first isolation contact piece 51 and the second isolation contact piece 61 are met. The two blades 511 are arranged in parallel, and thus current in the same direction is generated, and electromagnetic force that attracts each other is generated, thereby improving the clamping force of the first and second isolation contact pieces 51 and 61. If a short circuit fault occurs in the power system, a huge electromagnetic force is generated between the two blades 511, so that the two blades 511 tightly clamp the first wire outlet seat 41 or the second wire outlet seat 42, the breaker 4 is ensured to be disconnected firstly to perform an arc extinction function, then the second disconnecting switch 6 and the first disconnecting switch 5 are disconnected again, the contact resistance is reduced, and fusion welding of the blades 511 due to overlarge current is avoided. When the first disconnecting switch 5 is connected with the first grounding contact 2 or the second disconnecting switch 6 is connected with the second grounding contact 3, the first disconnecting switch 5 or the second disconnecting switch 6 can not be separated from the first grounding contact 2 or the second grounding contact 3 due to the action of electric force to cause electric arc, so that the problem of interphase short circuit is avoided.
Further alternatively, each blade 511 is provided with a first elongated slot 512, and the first elongated slot 512 penetrates through the second end of the blade 511, so as to reduce the rigidity of the blade 511, reduce the current from forming vortex on the blade 511, and improve the clamping force of the two blades 511.
The long hole 513 is provided in the blade 511, and the long hole 513 extends along the longitudinal direction of the blade 511. One end of the first long groove 512 penetrates through the second end of the blade 511, the other end of the first long groove 512 penetrates through the long hole 513 and extends towards the first end of the blade 511, and the width of the first long groove 512 is smaller than that of the long hole 513. Preferably, the first long groove 512 and the long hole 513 are each provided at a middle position of the blade 511 in the width direction.
As shown in connection with fig. 1 and 3, in some embodiments, the second ground contact 3 comprises an L-shaped ground contact plate 31, a first end of the ground contact plate 31 being connected to the cabinet 1, a second end of the ground contact plate 31 being capable of being positioned between the two blades 511, the second end of the ground contact plate 31 being provided with a second elongated slot 32, and the second elongated slot 32 extending through the second end of the ground contact plate 31. A second long groove 32 is provided on the ground contact plate 31 to reduce the rigidity of the ground contact plate 31 and to increase the clamping force with which the two blades 511 clamp the ground contact plate 31.
Optionally, the first ground contact 2 is in a plate structure, a third long groove 21 may be disposed on the first ground contact 2, a first end of the first ground contact 2 is connected to the cabinet 1, and the third long groove 21 penetrates through a second end of the first ground contact 2, so as to reduce rigidity of the first ground contact 2, and improve a clamping force of the two blades 511 to clamp the first ground contact 2.
In some embodiments, one end of the breaker 4 is connected with the inner side wall of the cabinet body 1, and the extending direction of the other end of the breaker 4 is parallel to the vertical direction when the cabinet body 1 is installed, namely, the breaker 4 is ensured to be in a vertical state, so that the problem that the breaker 4 sags due to the gravity of the breaker 4, the installation error is increased, the earthquake-resistant effect is poor, and the reliability is reduced is avoided.
The breaker 4 may be a vacuum breaker or an SF breaker. If the vacuum circuit breaker is adopted, a circuit breaker with a solid-sealed pole or bracket structure can be adopted, and the solid-sealed pole circuit breaker is preferred, so that the structure of the gas-filled cabinet is more compact and the size of the gas-filled cabinet is reduced while arc extinction is realized.
As shown in fig. 4 and 5, in another embodiment, at least two groups of second terminals 12 are provided on the cabinet 1, a second outlet seat 42 corresponding to each group of second terminals 12 is provided on the circuit breaker 4, a second grounding contact 3 corresponding to each group of second terminals 12 is provided in the cabinet 1, and each group of second terminals 12 is provided with a second isolating switch 6. A plurality of second disconnectors 6 may be arranged on both sides of the circuit breaker 4. Any arrangement of the first disconnector 5 and the plurality of second disconnectors 6 is within the scope of the application. Under the application scene with larger required capacity, the scheme of one inlet and one outlet is realized by increasing the volume of the air charging cabinet. Preferably, the second terminal 12 is an outgoing terminal, and the first terminal 11 is an incoming terminal, so as to implement a one-in-multiple-out scheme. At least two groups of second outlet seats 42 are arranged on one circuit breaker 4, so that the current flowing path is shortened, and the size of the air charging cabinet is reduced.
Typically three phases of electricity are connected to and output from the air tank, and each set of second terminals 12 includes three second terminals 12, respectively, for example. Corresponding to the second terminals 12 of each group, there are three second disconnecting switches 6 of each group, three second wire outlet seats 42 of each group, and three second grounding contacts 3 of each group.
The first wiring terminal 11 includes a wire-incoming sleeve, one end of the wire-incoming sleeve penetrates through the cabinet body 1 and is arranged on the inner side of the cabinet body 1, one end of the wire-incoming sleeve is hinged to the first isolation contact piece 51, and the other end of the wire-incoming sleeve is used for connecting a wire-incoming cable.
The second terminal 12 includes a wire-outlet sleeve, one end of which is inserted through the cabinet body 1 and is disposed at the inner side of the cabinet body 1, one end of which is hinged with the second isolation contact 61, and the other end of which is used for connecting a wire-outlet cable.
The cabinet body 1 is made of 316 stainless steel, molybdenum element is added in the 316 stainless steel, and the cabinet body has better corrosion resistance, especially better chloride corrosion resistance and heat resistance, and is especially suitable for environments possibly exposed to salt water or acid solution in the marine environment or the chemical industry field.
According to the inflatable cabinet provided by the utility model, when a short circuit fault occurs in the power system or the power system is overhauled, the first isolating switch 5 and the second isolating switch 6 can be grounded, and the first isolating switch 5 and the second isolating switch 6 have the capacity of closing short circuit current and opening and closing induced current, so that the inflatable cabinet can meet certain application scenes with specific requirements, can effectively play a role in protection, and the safety performance of the inflatable cabinet is improved, thereby improving the safety performance of the power system. When the electric power system has short circuit fault, the hydraulic transmission unit 7 has a response speed which is higher than that of the existing screw transmission structure, the second isolating switch 6 on the outlet side can be grounded quickly, the phenomenon that the second isolating switch 6 is burnt and ablated for a long time to generate fusion welding is avoided, and the damage degree of factors such as short circuit fault to the inflatable cabinet or electric elements of the electric power system is reduced.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. An inflatable cabinet, comprising:
The novel high-voltage power supply cabinet comprises a cabinet body (1), wherein a first wiring end (11) and a second wiring end (12) are arranged on the cabinet body (1), and a first grounding contact (2) and a second grounding contact (3) are arranged in the cabinet body (1);
the circuit breaker (4) is arranged in the cabinet body (1), and the circuit breaker (4) comprises a first wire outlet seat (41) and a second wire outlet seat (42);
The first isolating switch (5) is arranged in the cabinet body (1) and is used for connecting or disconnecting the first wiring terminal (11) and the first wire outlet seat (41) or is used for being connected with the first grounding contact (2);
The second isolating switch (6) is arranged in the cabinet body (1), the second isolating switch (6) is connected with a hydraulic transmission unit (7), and the hydraulic transmission unit (7) is used for driving the second isolating switch (6) to be connected or disconnected with the second wiring terminal (12) and the second wire outlet seat (42), or driving the second isolating switch (6) to be connected with the second grounding contact (3).
2. The gas-filled cabinet according to claim 1, wherein the first disconnecting switch (5) is connected with the hydraulic transmission unit (7), and the hydraulic transmission unit (7) is used for driving the first disconnecting switch (5) to connect or disconnect the first wiring terminal (11) and the first wire outlet seat (41), or is used for driving the first disconnecting switch (5) to connect with the first grounding contact (2).
3. The gas-filled tank according to claim 2, characterized in that the hydraulic transmission unit (7) comprises:
A hydraulic cylinder (71) connected with the cabinet body (1);
A piston rod (72), wherein one end of the piston rod (72) is slidably arranged in the hydraulic cylinder (71), and the other end of the piston rod (72) is arranged outside the hydraulic cylinder (71);
The connecting rod assembly (73), one end of connecting rod assembly (73) with the other end fixed connection of piston rod (72), the other end of connecting rod assembly (73) with second isolator (6) or first isolator (5) sliding connection, piston rod (72) are relative hydraulic cylinder (71) slides, so that connecting rod assembly (73) drive second isolator (6) or first isolator (5) rotate.
4. A gas-filled cabinet according to claim 3, wherein a plurality of second disconnecting switches (6) and first disconnecting switches (5) are respectively arranged, and long holes (513) are respectively arranged on each second disconnecting switch (6) and each first disconnecting switch (5);
The connecting rod assembly (73) comprises a first connecting rod (731), a second connecting rod (732) and a side connecting rod (733), wherein the first connecting rod (731) is arranged at intervals parallel to the second connecting rod (732), the first connecting rod (731) is connected with the second connecting rod (732) through the side connecting rod (733), the first connecting rod (731) is fixedly connected with the other end of the piston rod (72), the second connecting rod (732) sequentially penetrates through a plurality of long holes (513) of the second isolating switches (6) or a plurality of long holes (513) of the first isolating switches (5), the second connecting rod (732) is in sliding connection with the long holes (513), and the second connecting rod (732) is an insulating piece.
5. The gas-filled cabinet according to any one of claims 1 to 4, wherein the second isolating switch (6) comprises a second isolating contact piece (61), one end of the second isolating contact piece (61) being hinged with the second terminal (12), the other end of the second isolating contact piece (61) being intended to be connected with the second outlet seat (42) or the second ground contact (3);
The first isolating switch (5) comprises a first isolating contact piece (51), one end of the first isolating contact piece (51) is hinged with the first wiring end (11), and the other end of the first isolating contact piece (51) is used for being connected with the first wire outlet seat (41) or the first grounding contact (2).
6. The gas-filled cabinet according to claim 5, characterized in that the first isolation contact piece (51) and the second isolation contact piece (61) each comprise two blades (511), the two blades (511) are arranged in parallel and spaced apart, the first ends of the two blades (511) are hinged to the first terminal (11) or the second terminal (12), the second ends of the two blades (511) of the first isolation contact piece (51) are used for clamping the first outlet seat (41) or the first ground contact (2), and the second ends of the two blades (511) of the second isolation contact piece (61) are used for clamping the second outlet seat (42) or the second ground contact (3).
7. The inflatable cabinet according to claim 6, wherein each blade (511) is provided with a first elongated slot (512), and the first elongated slots (512) extend through the second end of the blade (511).
8. The gas-filled cabinet according to claim 6, wherein the second ground contact (3) comprises an L-shaped ground contact plate (31), a first end of the ground contact plate (31) being connected to the cabinet body (1), a second end of the ground contact plate (31) being placeable between two of the blades (511), the second end of the ground contact plate (31) being provided with a second elongated slot (32), and the second elongated slot (32) extending through a second end of the ground contact plate (31).
9. The gas-filled cabinet according to any one of claims 1-4, wherein one end of the circuit breaker (4) is connected to an inner side wall of the cabinet body (1), and the other end of the circuit breaker (4) extends in a direction parallel to a vertical direction when the cabinet body (1) is mounted.
10. The gas-filled cabinet according to any one of claims 1 to 4, wherein at least two groups of second wiring terminals (12) are arranged on the cabinet body (1), the second wire outlet seat (42) corresponding to each group of second wiring terminals (12) is arranged on the circuit breaker (4), the second grounding contact (3) corresponding to each group of second wiring terminals (12) is arranged in the cabinet body (1), and each group of second wiring terminals (12) is respectively and correspondingly provided with the second isolating switch (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422228396.7U CN223285482U (en) | 2024-09-11 | 2024-09-11 | Inflatable cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422228396.7U CN223285482U (en) | 2024-09-11 | 2024-09-11 | Inflatable cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223285482U true CN223285482U (en) | 2025-08-29 |
Family
ID=96834984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422228396.7U Active CN223285482U (en) | 2024-09-11 | 2024-09-11 | Inflatable cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223285482U (en) |
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2024
- 2024-09-11 CN CN202422228396.7U patent/CN223285482U/en active Active
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