CN115395370A - Bus joint capable of being detached at fixed point of power distribution cabinet - Google Patents
Bus joint capable of being detached at fixed point of power distribution cabinet Download PDFInfo
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- CN115395370A CN115395370A CN202211054844.5A CN202211054844A CN115395370A CN 115395370 A CN115395370 A CN 115395370A CN 202211054844 A CN202211054844 A CN 202211054844A CN 115395370 A CN115395370 A CN 115395370A
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- Prior art keywords
- bus
- insulating
- joint
- layer
- sealing device
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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
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/202—Cable lay-outs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/70—Insulation of connections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cable Accessories (AREA)
Abstract
The invention discloses a bus joint of a power distribution cabinet, which can be disassembled at fixed points, wherein the bus joint is connected to a plurality of wiring ends on the same line on the power distribution cabinet, and the bus joint is divided into a unidirectional bus joint and a multidirectional bus joint; installing an inner voltage-sharing layer adapter outside the conductive core at the connecting point, and performing insulation sealing treatment by using a bus connecting point insulation sealing device; the inner voltage-sharing layer adapter is made of a semi-conductive or conductive material; the internal shape of the adapter is processed into a shape of a conductive core capable of tightly wrapping the position of a bus connecting point; the exterior of the adapter is processed into a shape capable of tightly connecting with the voltage equalizing layer inside the bus bar connecting point insulating and sealing device. The invention can solve the technical problem that the discharge is caused by the gap between the voltage-equalizing layer in the bus connecting point insulating and sealing device of the traditional bus and the bus conducting core at the bus connecting point sealed and protected by the sealing device.
Description
Technical Field
The invention relates to an improved technology of a bus connecting device for a power distribution cabinet.
Background
In the technical scheme of the bus joint (patent number: 201320213817.8) with the name of fixed point detachable for the power distribution cabinet, because an obvious gap exists between a voltage equalizing layer inside a bus connecting point insulation sealing device and a bus conducting core at the position of the bus connecting point sealed and protected by the sealing device, a large potential difference exists between the bus conducting core and the voltage equalizing layer inside the bus connecting point insulation sealing device during the power-on operation of the structural bus, an obvious discharge phenomenon can occur, and generated electric arcs can ablate peripheral equipment to cause equipment damage, thereby causing serious harm to the safety of electric power facilities.
Disclosure of Invention
The invention aims to provide a bus joint of a power distribution cabinet, which can be detached at fixed points, and solves the technical problem that discharge is caused by gaps between a voltage-sharing layer inside a bus connecting point insulation sealing device of a bus of a traditional model and a bus conducting core at the bus connecting point sealed and protected by the sealing device.
The invention realizes the aim, and adopts the following technical scheme:
a bus joint of a power distribution cabinet capable of being detached at fixed points is connected to a plurality of wiring ends on the same line on the power distribution cabinet, and the connecting bus joint is divided into a unidirectional connecting bus joint and a multidirectional connecting bus joint according to the difference of the number and the arrangement direction of the wiring ends; the unidirectional connection bus joint is positioned on the wiring end of the line end point, and the multidirectional connection bus joint is positioned on the wiring end of the line intermediate connection transition; one end of the unidirectional or multidirectional connecting bus joint is connected with a connecting device for a wiring end through a reserved wiring end interface, the other end of the unidirectional or multidirectional connecting bus joint is connected with a bus connecting point of an adjacent connecting bus joint through a bus connecting point through the connecting device for the bus connecting point, the internal voltage-equalizing layer adapter is arranged outside the conductive core at the connecting point, and the bus connecting point insulating and sealing device is used for insulating and sealing treatment;
the unidirectional connection bus joint comprises a conductive core and an insulating body; one end of the conductive core is processed into a structure suitable for being connected with the wiring terminal, and the other end of the conductive core is processed into a structure of a bus connecting point; one end of the insulating body is structurally suitable for being matched and connected with a wiring terminal on a power distribution cabinet, and the other end of the insulating body is formed into a structure matched with the bus connection point insulating and sealing device;
the multidirectional connection bus joint comprises a conductive core and an insulating body, the conductive core is of a divergent layout structure taking a wiring terminal connection point on a power distribution cabinet as a center, one end of the conductive core in each direction is processed into a bus connection point structure, and the other end of the conductive core in each direction is processed into a structure suitable for being connected with a wiring terminal on the power distribution cabinet; one end of the insulating body is structurally suitable for being matched and connected with a wiring terminal on a power distribution cabinet, and the other end of the insulating body is correspondingly distributed and respectively formed into a structure matched with the bus connection point insulating and sealing device;
the inner voltage-sharing layer adapter is made of a semi-conductive or conductive material; the internal shape of the adapter is processed into a shape of a conductive core capable of tightly wrapping the position of a bus connecting point; the outer part of the adapter is processed into a shape which can be tightly connected with a voltage equalizing layer inside the bus connecting point insulating and sealing device;
the bus connecting point insulating and sealing device is of a cylindrical structure, two ends of the interior of the bus connecting point insulating and sealing device are processed into a shape suitable for being sleeved with the bus wiring terminal insulating and sealing device, and the middle of the interior of the bus connecting point insulating and sealing device is processed into a shape suitable for wrapping the bus connecting point; the bus connecting point insulating and sealing device is independently composed of an insulating layer, an insulating layer and a voltage-equalizing layer, an insulating layer and a shielding layer, or a structure selected from the insulating layer, the voltage-equalizing layer and the shielding layer.
The insulating body of the unidirectional connection bus joint and the multidirectional connection bus joint is independently composed of an insulating layer, or the insulating layer and a voltage-sharing layer, or the insulating layer and a shielding layer, or a structure selected from the insulating layer, the voltage-sharing layer and the shielding layer.
The connecting device for the bus connecting point adopts a bolt fastening structure, a plug structure or a compression joint structure.
The unidirectional connecting bus joint and the multidirectional connecting bus joint can be formed into an integrated structure and a split structure; in the integrated structure, in the insulating body of the bus joint, the insulating sealing device part of the connection point of the bus joint and the wiring end and the conductive core insulating sealing device part are integrally formed and wrapped outside the conductive core; in the split structure, in an insulating body of a bus joint, a bus joint and wiring end connecting point insulating and sealing device part and a conductive core insulating and sealing device part are formed into two parts, and a conductive core is wrapped in the conductive core insulating and sealing device; in the split structure, the insulating sealing device part of the connecting point of the bus joint and the terminal and the insulating body of the conductive core insulating sealing device are independently formed by an insulating layer, an insulating layer and a voltage-sharing layer, an insulating layer and a shielding layer, or a selected structure of the insulating layer, the voltage-sharing layer and the shielding layer.
The inner pressure equalizing layer adapter is of a side-opening structure or a sleeve structure.
The internal voltage-sharing layer adapter is in a multi-layer wrapping structure form and is used for filling a gap space between the exposed conductive core of the bus connecting point and the voltage-sharing layer inside the bus connecting point insulation sealing device.
The invention solves the problem of the gap between the voltage equalizing layer in the insulating sealing device of the bus connecting point of the bus and the bus conducting core at the bus connecting point which is sealed and protected by the sealing device, eliminates the potential difference between the bus conducting core and the voltage equalizing layer in the insulating sealing device of the bus connecting point generated by the gap, and fundamentally solves the defects that the peripheral equipment is damaged and the safety of electric power facilities is damaged due to the electric arc ablation caused by the potential difference existing in the gap during the electrifying operation of the bus.
Drawings
Fig. 1-1, 1-2, 1-3 are schematic top, right, and main, right views of the external appearance of an embodiment of an internal uniform pressure layer adapter of the present invention.
Fig. 2 is a schematic diagram illustrating the effect of the installed internal uniform pressure layer adapter of the present invention.
FIG. 3 is a schematic view of a one-way connecting busbar joint of the present invention.
Fig. 4 is a sectional view of fig. 3.
Fig. 5 is a top view of fig. 3.
FIG. 6 is a schematic view of the unidirectional connector busbar joint of the present invention in an open position between connection points.
Fig. 7 is a schematic view of the completed connection of the conductive core between the connection points of the unidirectional connector busbar joint of the present invention.
Fig. 8 is a schematic view of the installed state of the internal uniform pressure layer adapter between the unidirectional connecting busbar joint connection points of the present invention.
Fig. 9 is a schematic view showing a state where the bus bar connecting point insulation sealing device of the present invention is moved to a unidirectional connecting bus bar joint connecting point and the bus bar is installed.
Fig. 10 is a schematic view of a bi-directional link busbar joint of the present invention.
Fig. 11 is a sectional view of fig. 10.
Fig. 12 is a top view of fig. 10.
FIG. 13 is a schematic view of the bi-directional link busbar joint of the present invention in an open position between connection points.
FIG. 14 is a schematic view of the completed connection of the conductive cores between the connection points of the bi-directional link busbar joint of the present invention.
FIG. 15 is a schematic view of the fully installed condition of the internal equalizer layer adapter between the bi-directional bussing joint connection points of the present invention.
Fig. 16 is a schematic view showing a state where the bus bar connecting point insulation sealing device of the present invention is moved to a bidirectional connecting bus bar joint connecting point and the bus bar is mounted.
Fig. 17 is a schematic structural view of an embodiment of the bus bar connecting point insulation sealing device of the invention.
Fig. 18 is a cross-sectional view of fig. 17.
Fig. 19 is a top view of fig. 17.
Fig. 20 is a block diagram of the busbar joint to terminal connection point insulating split seal of the unidirectional busbar joint of the present invention.
Fig. 21 is a block diagram of the busbar joint to terminal connection point insulating split seal of the bidirectional busbar joint of the present invention.
Fig. 22 is a structural view of the conductive core insulation split type sealing means of the present invention.
Numbering in the figures: 1 is a bus joint and terminal connection point insulation sealing device, 2 is a conductive core insulation sealing device, 2-1 is a shielding layer, 2-2 is an insulating layer, 2-3 is a voltage equalizing layer, 3 is a connection bus joint connection point, 4 is a connection bus joint conductive core, 5 is a bus connection point insulation sealing device, 5-1 is a shielding layer of the bus connection point insulation sealing device, 5-2 is an insulating layer of the bus connection point insulation sealing device, 5-3 is a voltage equalizing layer of the bus connection point insulation sealing device, and 6 is a reserved operation opening for implementing connection operation of the terminal and the bus joint. And 7 is an inner uniform pressure layer adapter. And 8 is a reserved operation opening for implementing the connection operation of the conductive core insulation split type sealing device and the bus joint and terminal connection point insulation split type sealing device.
Detailed Description
The connecting bus joint described by the invention is connected to the wiring end of a power distribution cabinet and consists of a unidirectional connecting bus joint and a multidirectional connecting bus joint, wherein the unidirectional connecting bus joint is positioned on the wiring end of the end point of the line, and the multidirectional connecting bus joint is positioned on the wiring end in the middle connection transition of the line. The bus joint is connected with the wiring end through the reserved wiring end interface by using a traditional connecting device and a traditional connecting mode, and the bus joint is connected with the bus connecting point of the adjacent bus joint through the bus connecting point by using the connecting device, and the invention is characterized in that: the internal voltage-equalizing layer adapter is arranged outside the conductive core at the connecting point, so that the internal part of the internal voltage-equalizing layer adapter can be tightly matched with the conductive core, the external part of the internal voltage-equalizing layer adapter can be tightly connected with the voltage-equalizing layer in the bus connecting point insulating and sealing device, and the bus connecting point insulating and sealing device is used for insulating and sealing treatment.
Referring to fig. 1-1, 1-2, 1-3, fig. 2, an internal voltage equalization layer adaptor 7 is made of a semi-conductive or conductive material. The interior shape of the adapter is processed into a shape of a conductive core that can tightly wrap the bus bar connection point location. The exterior of the adapter is processed into a shape capable of being tightly connected with the voltage equalizing layer inside the busbar connection point insulating and sealing device 5.
Referring to fig. 3 to 5, the unidirectional joint bus bar connector of one direction includes a conductive core 4 and an insulating body. The insulating body comprises a bus joint and terminal connection point insulating and sealing device 1 and a conductive core insulating and sealing device 2. One end of the conductive core 4 is processed into a conventional structure suitable for terminal connection and the other end is processed into a structure of the bus bar connection point 3. The insulation body is an insulation sealing device wrapped outside the conductive core, one end of the insulation sealing device 1 at the connection point of the bus joint and the wiring end is suitable for being connected with the wiring end on the power distribution cabinet in a matching way, the other end of the insulation sealing device is formed into an operation port 6 for implementing the connection operation of the wiring end and the bus joint, the operation port is suitable for the fastening operation of the wiring end, and the operation port can be matched with the bus insulation sealing element for insulation sealing; the outer end of the conductive core insulating and sealing device 2 is formed into a structure matched with the bus connecting point insulating and sealing device.
When the unidirectional connection bus joint and the wiring terminal adopt a bolt fastening mode, an operation opening and a matched sealing element for connection operation of the wiring terminal and the bus connection joint can adopt a split type design. When the unidirectional connection bus joint and the wiring end adopt a plug structure, an external pressing device is utilized to press and fasten the unidirectional connection bus joint and the wiring end, and the wiring end and the bus connection joint are connected and operated through an operation port and a matched sealing piece, so that the unidirectional connection bus joint and the wiring end can adopt an integrated design.
Referring to fig. 10 to 12, the multi-directional connection bus joint on the terminal includes a conductive core and an insulating body, the conductive core of the multi-directional connection bus joint is a divergent layout structure taking the terminal connection point on the power distribution cabinet as a center, for example, the design of two conductive cores that are opposite in phase by 180 degrees or the design of four conductive cores that are 90 degrees to each other are all the structural forms of the multi-directional connection bus joint. The conductive core and the insulating body have the same structure.
Referring to fig. 17 to 19, the bus bar connecting point insulation sealing device 5 is a cylindrical structure, two ends of the interior of the device are processed to be suitable for being connected with the bus bar insulation sealing device, and the middle of the interior of the device is processed to be suitable for wrapping the bus bar connecting point. The insulating and sealing device of the bus connecting point can be added with or without a voltage equalizing layer 5-3 inside, and can be added with or without a shielding layer 5-1 outside.
The unidirectional connecting bus joint and the multidirectional connecting bus joint can be formed into an integrated structure and a split structure; in the integrated structure, in the insulating body of the bus joint, the bus joint and terminal connecting point insulating and sealing device part and the conductive core insulating and sealing device part are integrally formed and are wrapped outside the conductive core; referring to fig. 20, 21 and 22, in the split structure, in the insulating body of the bus bar joint, the bus bar joint and terminal connection point insulating and sealing device part and the conductive core insulating and sealing device part are formed into two parts, and the conductive core is wrapped in the conductive core insulating and sealing device; in the split structure, the insulating sealing device part of the connection point of the bus joint and the terminal and the insulating body of the conductive core insulating sealing device are independently formed by an insulating layer, an insulating layer and a voltage-sharing layer, an insulating layer and a shielding layer, or a selected structure of the insulating layer, the voltage-sharing layer and the shielding layer.
Common forms of terminal: external cone shape, internal cone shape, and wiring row shape. Common forms of conductive core: metal tubes, metal rods, stranded wires and metal bars. The materials can be divided into copper, aluminum, copper-clad aluminum, alloy, chemicals with conductive property, and the like. The common connection structure of the terminal: the round bus is contacted with the wiring end through a clamp and is fastened through the bolt; the plug structure is characterized in that a fixed contact is arranged at the wiring end, a moving contact is arranged at the bus end, and the moving contact and the fixed contact are contacted and separated through plug action during connection. Terminal and busbar joint access ports are commonly sealed: the use of bolted constructions often results in a seal that is blocked by a seal (plug). The connector adopting the plug structure generally adopts a sealing end integrated structure. The sealing element is made of insulating material. The above is in the category of the prior art, and no specific structural diagram is given.
Referring to fig. 6 to 9, when two terminals on the connecting line are provided, two unidirectional connecting bus joints are selected, a bus connecting point insulating and sealing device 5 is firstly sleeved on a bus insulating and sealing sheath of any one unidirectional connecting bus joint to expose a bus connecting point 3, one ends of the two unidirectional connecting bus joints are connected with the terminals, an operating surface is sealed, the two unidirectional connecting bus joints are connected at the bus connecting point 3 through a connecting device, an exposed conductive core at the connecting part is wrapped by an inner voltage-equalizing layer adapter, and finally the bus connecting point insulating and sealing device 3 is pushed to a preset installation position to wrap the bus connecting point 3 and ensure safe contact with the inner voltage-equalizing layer adapter, so that the bus is completely installed. When the device is disassembled, the bus connecting point insulating and sealing device 5 is pushed to expose the bus connecting point 3, or the bus connecting point insulating and sealing device 5 is damaged to expose the bus connecting point 3, the inner pressure equalizing layer adapter is disassembled or damaged, the connecting device of the bus connecting point 3 is disconnected, the connecting device of the unidirectional connecting bus joint needing to be disassembled and the wiring end on the power distribution cabinet is disconnected, and the bus disassembly is finished.
Referring to fig. 13 to 16, when a plurality of wiring terminals are arranged on the connection circuit, two unidirectional connection bus connectors are selected, a plurality of multidirectional connection bus connectors are selected, the number of the connection buses is the same as that of the wiring terminals on the connection circuit, a plurality of bus connection point insulating and sealing devices are selected, the bus connection point insulating and sealing devices are respectively sleeved on bus insulating and sealing sheaths of any connection bus connector to expose bus connection points, one end of each connection bus connector is connected with the wiring terminal, the other end of each connection bus connector is sealed, all the connection bus connectors are respectively connected at the bus connection points through the connection devices, an exposed conductive core at the connection point is wrapped and treated by an inner uniform pressure layer adapter, finally, the bus connection point insulating and sealing device is pushed to a preset installation position to wrap the bus connection point to push the bus connection point insulating and sealing device to the preset installation position to wrap the bus connection point and ensure the bus connection point to be safely contacted with the inner uniform pressure layer adapter, and the bus is installed completely. When the bus connecting point insulation sealing device is detached, the bus connecting point insulation sealing device is pushed to expose the bus connecting point, or the bus connecting point insulation sealing device is damaged to expose the bus connecting point, the inner voltage-sharing layer adapter is detached or damaged, the connecting device of the bus connecting point is disconnected, the connecting device of the connecting bus needing to be detached and the connecting terminal on the power distribution cabinet is disconnected, and the bus is detached completely.
Referring to fig. 20 and 22, when the unidirectional bus joint is a split structure, when a bus is installed, a bus joint and terminal connection point insulation split type sealing device of the unidirectional bus joint and a conductive core insulation split type sealing device part are selected, a connection bus joint connection point 3 of the conductive core insulation split type sealing device part faces outwards, the other end of the connection bus joint and terminal connection point insulation split type sealing device of the unidirectional bus joint is inserted into the bus joint and terminal connection point insulation split type sealing device from the reserved operation port 8, and the bus joint and the terminal connection point insulation split type sealing device are combined into a complete unidirectional connection bus joint.
Referring to fig. 21 and 22, when the multi-directional bus joint is of a split structure, when a bus is installed, the split type sealing device for insulating the bus joint and the connection point of the terminal of the multi-directional bus joint and the two split type sealing devices for insulating the conductive cores are selected, the connection point 3 of the bus joint of the two split type sealing devices for insulating the conductive cores faces outwards, the other end of the bus joint is inserted into the split type sealing device for insulating the bus joint and the connection point of the terminal of the multi-directional bus joint from the reserved operation port 8, and the three parts are combined into a complete multi-directional bus joint.
The inner pressure equalization layer adapter is common:
the conducting or semi-conducting material is prefabricated, the conducting or semi-conducting material is prefabricated into a shape that the inside can tightly wrap a conducting core at the position of a bus connecting point, the outside can be tightly connected with a voltage-equalizing layer in the insulating and sealing device of the bus connecting point, and the side surface of the conducting or semi-conducting material is of an opening structure or a sleeve structure. The assembly sequence of the side openings is that firstly, a bus is fastened, and then an adapter is installed; the assembly sequence of the sleeve structure is that the adapter is sleeved, then the nut is screwed, and finally the adapter is slid to wrap.
The conducting or semi-conducting material is wound in a wrapping mode, and the conducting or semi-conducting material is used for filling the gap space between the exposed conducting core of the bus connecting point and the voltage-sharing layer inside the bus connecting point insulating and sealing device in a multi-layer wrapping mode.
The bus bar connection joint is in a common fixed form:
and the sealing element is connected with the bolt to press and fix the bus connecting joint on the wiring end. The plug structure compresses tightly the bus connecting joint and fixes the bus connecting joint through the external compressing device at the joint.
The bus connection point setting mode and the bus and bus connection mode are as follows:
in the mode 1, the bus bar is directly fastened by a bolt through a bolt hole preset at a bus bar connecting point.
The connecting device has two types of soft connection and hard connection, wherein in the example of hard connection, two copper bar buses are connected, the connecting device is manufactured into a tile-shaped clamp with the diameter of two ends respectively slightly smaller than that of a copper bar to be connected, the copper bar buses are inserted into the clamp, and the copper bar buses are locked by inserting fasteners such as bolts through drilled holes. The flexible connection example, two copper bar class generating lines are connected, make into connecting device both ends and be the loose piece, and the loose piece is suitable for the structure of copper bar generating line connection, links to each other with the copper braided wire in the middle of the loose piece, and like this, two generating lines link to each other the back, and the contact point in the middle of can have certain activity, can reduce the influence of the mechanical force that the generating line at both ends received under the condition that takes place vibrations. The hard connection has the advantages of ensuring the through-flow capacity and the mechanical strength, and has the defects of high requirement on the processing technology for connecting the buses at two ends and incapability of fine adjustment after connection. The flexible connection has the advantages that the requirement on the processing technology of the connecting bus is low, the possibility of fine adjustment is provided for still keeping the whole circuit after connection, and the defects that the through-current capacity is influenced and the whole mechanical strength of the circuit is low are overcome.
The raw materials of bus, connector and bus tie point insulating seal device, the structure to and theory of operation and the performance by the structure decision:
the raw materials are usually plastic chemical raw materials, common raw materials comprise nylon, resin and rubber, the electrical properties comprise conductivity and insulativity, and the mechanical properties comprise extensibility and inextensibility of a finished product.
The structure generally has three structures:
the single-layer structure, which is insulating as a whole, is generally called an all-insulating product. After the installation, the product surface does not need extra processing, and the circuit is in operation, because of there being the electric current to pass through in the electrically conductive core of inside, insulating layer outside surface can produce the induction static, has certain voltage, has certain danger to biology and peripheral equipment, because this kind of structure does not make the optimization of any electrical property to the generating line tie point, so has more obvious discharge phenomenon usually at the generating line tie point, this kind of structure also is called totally insulating structure usually.
Bilayer structure, inside and electrically conductive core, wiring end or sealing member, the contact surface that the fastener contacted is the conducting layer, also called the voltage-sharing layer, the voltage-sharing layer outside is wrapped up by the insulating layer, after the installation, the product surface also need not additionally to handle, in the line operation, because of having the electric current to pass through in the inside electrically conductive core, insulating layer outside surface can produce the response static, certain voltage has, there is certain danger to biology and peripheral equipment, because the inside voltage-sharing layer of this kind of structure makes the optimization in the aspect of the electrical property to the bus tie point, so there is not obvious discharge phenomenon usually at the bus tie point, this kind of structure is also called totally insulated structure usually.
The contact surface of the three-layer structure, which is contacted with the conductive core, the wiring terminal or the sealing element and the fastener, is a conductive layer, also called a voltage-sharing layer, the outer side of the voltage-sharing layer is wrapped by an insulating layer, the outer side of the insulating layer is wrapped by the conductive layer, also called a shielding layer, and the shielding layer is not connected with the voltage-sharing layer. After the structure is installed, the surface of a product is grounded through a preset grounding point by using a ground wire, in the process of line operation, as current passes through an internal conductive core, the outer side surface of an intermediate insulating layer can generate induced static electricity and has a certain voltage, the induced static electricity passes through an outermost conductive layer, also called a shielding layer and the ground wire to discharge to the ground, the outermost shielding layer is represented as zero potential or low potential, and has good safety to organisms and peripheral equipment.
The bus connecting point insulating and sealing device 5 can be divided into a prefabrication molding mode and a pre-expansion mode, and the prefabrication molding mode and the pre-expansion mode are both made of raw materials with ductility. When the bus bar insulating sealing device is used, a prefabricated molding product utilizes lubricating grease to lubricate and slide on a bus bar insulating sealing sheath, and the self ductility and the contractility of raw materials are utilized to provide insulating sealing for bus bar connecting points. The internal diameter of a pre-expanded product is smaller than the minimum diameter of a section after the bus connecting point is connected, the raw material of the bus connecting point insulating and sealing device is used for having ductility, mechanical operation is used for pre-expanding and supporting, the internal diameter of the pre-expanded product is far larger than the diameter of a bus insulating and sealing sheath, the pre-expanded product can freely slide on the bus insulating and sealing sheath without lubricating grease after being expanded, when the bus connecting point is connected and constructed, the pre-expanded bus connecting point insulating and sealing device is moved to a preset installation position, the pre-expanded supporting device is withdrawn, the bus connecting point insulating and sealing device is contracted, and the purpose of sealing the bus connecting point is achieved. The insulating sealing device of the bus connecting point of the pre-forming process can select two modes of lubrication sliding and destruction when being dismantled, and the insulating sealing device of the bus connecting point of the pre-expanding process can select the destruction mode when being dismantled. The pre-expansion process is also often referred to as a cold-shrink process.
Claims (6)
1. A bus joint of a power distribution cabinet capable of being detached at fixed points is connected to a plurality of wiring ends on the same line on the power distribution cabinet, and the connecting bus joint is divided into a unidirectional connecting bus joint and a multidirectional connecting bus joint according to the difference of the number and the arrangement direction of the wiring ends; the unidirectional connection bus joint is positioned on the wiring end of the line end point, and the multidirectional connection bus joint is positioned on the wiring end of the line intermediate connection transition; one end of the unidirectional or multidirectional connection bus joint is connected with a connecting device for a wiring end through a reserved wiring end interface, and the other end of the unidirectional or multidirectional connection bus joint is connected with a bus connecting point of an adjacent connection bus joint through a bus connecting point through the connecting device for the bus connecting point;
the unidirectional connection bus joint comprises a conductive core and an insulating body; one end of the conductive core is processed into a structure suitable for being connected with the wiring terminal, and the other end of the conductive core is processed into a structure of a bus connecting point; one end of the insulating body is structurally suitable for being matched and connected with a wiring terminal on a power distribution cabinet, and the other end of the insulating body is formed into a structure matched with the bus connection point insulating and sealing device;
the multidirectional connection bus joint comprises a conductive core and an insulation body, the conductive core is of a divergent layout structure taking a wiring end connection point on the power distribution cabinet as a center, one end of the conductive core in each direction is processed into a bus connection point structure, and the other end of the conductive core in each direction is processed into a structure suitable for being connected with a wiring end on the power distribution cabinet; one end of the insulating body is structurally suitable for being matched and connected with a wiring terminal on a power distribution cabinet, and the other end of the insulating body is correspondingly distributed and respectively formed into a structure matched with the bus connection point insulating and sealing device;
the inner voltage-sharing layer adapter is made of a semi-conductive or conductive material; the internal shape of the adapter is processed into a shape of a conductive core capable of tightly wrapping the position of a bus connecting point; the outer part of the adapter is processed into a shape which can be tightly connected with a voltage equalizing layer inside the bus connecting point insulating and sealing device;
the bus connecting point insulating and sealing device is of a cylindrical structure, two ends of the interior of the bus connecting point insulating and sealing device are processed into a shape suitable for being sleeved with the bus wiring terminal insulating and sealing device, and the middle of the interior of the bus connecting point insulating and sealing device is processed into a shape suitable for wrapping the bus connecting point; the bus connecting point insulating and sealing device is independently composed of an insulating layer, an insulating layer and a voltage-equalizing layer, an insulating layer and a shielding layer, or a structure selected from the insulating layer, the voltage-equalizing layer and the shielding layer.
2. The bus bar joint capable of fixed point disassembly of the power distribution cabinet as claimed in claim 1, wherein the insulation body of the unidirectional connection bus bar joint and the multidirectional connection bus bar joint is composed of an insulation layer, or an insulation layer and a voltage equalizing layer, or an insulation layer and a shielding layer, or a selected structure of the insulation layer, the voltage equalizing layer and the shielding layer.
3. The bus bar joint capable of fixed point disassembly of the power distribution cabinet according to claim 1, wherein the connecting device for the bus bar connecting point adopts a bolt fastening structure, a plug structure or a compression joint structure.
4. The bus bar joint of the power distribution cabinet capable of being fixed-point disassembled according to claim 1, wherein the unidirectional connecting bus bar joint and the multidirectional connecting bus bar joint can be formed into an integrated structure and a split structure; in the integrated structure, in the insulating body of the bus joint, the insulating sealing device part of the connection point of the bus joint and the wiring end and the conductive core insulating sealing device part are integrally formed and wrapped outside the conductive core; in the split structure, in an insulating body of a bus joint, a bus joint and wiring end connecting point insulating and sealing device part and a conductive core insulating and sealing device part are formed into two parts, and a conductive core is wrapped in the conductive core insulating and sealing device; in the split structure, the insulating sealing device part of the connecting point of the bus joint and the terminal and the insulating body of the conductive core insulating sealing device are independently formed by an insulating layer, an insulating layer and a voltage-sharing layer, an insulating layer and a shielding layer, or a selected structure of the insulating layer, the voltage-sharing layer and the shielding layer.
5. The bus bar joint of a power distribution cabinet capable of being fixed-point disassembled according to claim 1, wherein the inner voltage-equalizing layer adapter is in a side-open structure or a sleeve structure.
6. The bus bar joint capable of being fixed-point disassembled of the power distribution cabinet as claimed in claim 1, wherein the internal voltage-sharing layer adapter is in a multi-layer wrapping structure form so as to fill a gap space between the exposed conductive core of the bus bar connection point and the internal voltage-sharing layer of the bus bar connection point insulation sealing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211054844.5A CN115395370A (en) | 2022-08-30 | 2022-08-30 | Bus joint capable of being detached at fixed point of power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211054844.5A CN115395370A (en) | 2022-08-30 | 2022-08-30 | Bus joint capable of being detached at fixed point of power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115395370A true CN115395370A (en) | 2022-11-25 |
Family
ID=84124781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211054844.5A Pending CN115395370A (en) | 2022-08-30 | 2022-08-30 | Bus joint capable of being detached at fixed point of power distribution cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115395370A (en) |
-
2022
- 2022-08-30 CN CN202211054844.5A patent/CN115395370A/en active Pending
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