CN106972438B - A isolation switch insulation cable support - Google Patents

Abstract

The invention relates to the technical field of power supply auxiliary equipment manufacturing, in particular to an isolating switch insulated cable support which is provided with an insulated support rod and is characterized in that two-phase cable locking mechanisms are symmetrically arranged on the left side and the right side of the insulated support rod, each two-phase cable locking mechanism comprises two fixed lock heads, a liner and a binding belt, one end of each two fixed lock head is connected with the insulated support rod, the other end of each two fixed lock head is provided with an arc-shaped liner with an opening at the upper part, a binding belt through hole is formed in each fixed lock head above the arc-shaped liner, one end of each binding belt is connected with the lower end of each fixed lock head, and the other end of each binding belt wraps the liner and penetrates through the corresponding binding belt through hole above the fixed lock head to fix the distance between the insulated cables.

Description

A isolation switch insulation cable support

technical field

The invention relates to the technical field of power supply auxiliary equipment manufacturing, in particular to an isolating switch insulated cable bracket with simple structure, convenient use, non-destructive properties and safe insulation distance.

Background technique

As we all know, the isolating switch is the most widely used electrical appliance in the high-voltage switchgear. The design, establishment and safe operation of substations and power plants have a great impact. The main feature of the knife switch is that it has no arc extinguishing ability and can only open and close the circuit without load current. The most important function is in the electrical When the equipment is overhauled, an electrical separation is provided, and it is a clearly visible disconnection point to ensure the personal safety of the maintenance personnel.

At present, the isolating switch is generally connected to the inlet end of the isolating switch through the cable introduced from the upper end of the utility pole, and the outlet end of the isolating switch is connected to the power user through the cable. The cables connected to the isolating switch need to maintain a certain distance between each other. Distance, to prevent the insufficient insulation distance between the cables and cause the current between the cables to be unstable. Usually, the cables connected to the input terminal of the disconnector are separated through the top of the pole, so there is generally no insulation distance between the cables. Insufficient problem, but the outlet end of the isolating switch is generally connected to the wire composed of multi-strand capillary copper wires. Since the wires connected by multi-strand capillary copper wires are soft and have low plasticity, they will not There will be deviation, which will cause the distance between the cables to change. Once the distance between the cables is lower than the insulation distance, it will have an impact on the circuit. The isolation methods currently used are generally isolated in pairs, and the three-phase cables are generally separated. There are two supporting insulating structures, and bolts and nuts are used to fix each two cables, which causes work troubles and affects use.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned deficiencies in the prior art, and provide a disconnector insulated cable support with simple structure, convenient use, not easy to be damaged, and maintaining a safe insulation distance.

The technical solution adopted by the present invention to solve its technical problems is:

An insulated cable support for a disconnector, provided with insulating poles, characterized in that the left and right sides of the insulating poles are symmetrically provided with two-phase cable locking mechanisms, and the two-phase cable locking mechanisms are composed of two phases It consists of a fixed lock head, a liner and a cable tie. One end of the two-phase fixed lock head is connected to the insulating support rod, and the other end of the two-phase fixed lock head is provided with an arc-shaped liner with an upper opening. The arc-shaped liner The upper fixed lock head is provided with a cable tie through hole, one end of the cable tie is connected to the lower end of the fixed lock head, and the other end wraps the liner and passes through the cable tie through hole above the fixed lock head to achieve insulation To fix the distance between the cables, a rotating fitting mechanism is provided between the two-phase cable locking mechanism and the insulating pole, and the rotating fitting mechanism is composed of a rotating sleeve, a fixing bolt, a positioning plate, a connecting plate and a connecting screw Composition, the opening end of the rotating sleeve is sleeved on the insulating support rod, the insulating sleeve is provided with a fixing bolt, the fixing bolt passes through the insulating sleeve and then locks the insulating supporting rod to realize the fixing of the insulating supporting rod, the The closed end of the rotating sleeve is provided with a positioning plate, and the lower part of the positioning plate is provided with a connecting plate connected with the fixed lock head in the two-phase cable locking mechanism. The connecting plate and the positioning plate are correspondingly provided with the same connecting hole , there is a connecting screw in the connecting hole, the lower end of the connecting screw passes through the connecting hole on the positioning plate and the connecting plate in turn and is fixed by the lock nut, and the two-phase cable locking mechanism is realized through the connection between the connecting plate and the positioning plate The horizontal rotation of the two-phase cable locking mechanism realizes the vertical rotation of the two-phase cable locking mechanism through the rotation of the rotating sleeve, so as to better cooperate with the cable cutting surface and protect the cable.

The middle part of the insulating pole of the present invention is provided with an insulating shed, which increases the creepage distance and prevents the surface of the insulating pole from being conductive in rainy and snowy weather, which affects the insulation distance between the insulating cables.

The middle part of the insulating pole of the present invention is provided with a three-way connection bushing, and the three-way connection bushing is divided into a horizontal pipe and a vertical pipe, and the insulating pole passes through the horizontal pipe of the three-way connection bushing, The standpipe is provided with a three-phase cable support and positioning mechanism. The three-phase cable support and positioning device is composed of a three-phase fixed lock head, a liner, a cable tie, and a connecting shaft. The side of the three-phase fixed lock head There is an arc liner, and the three-phase fixed lock head above the arc liner is provided with a cable tie through hole. One end of the cable tie is connected to the bottom of the fixed lock head, and the other end wraps the arc liner and The three-phase insulated cable is fixed through the cable tie hole above the three-phase fixed lock head. The three-phase cable support and positioning device is provided with a connecting shaft below the three-phase fixed lock head. The connecting shaft One end is connected with the three-phase fixed lock head, and the other end extends into the standpipe in the three-way connection bushing and is fixed by the fixing bolt provided on the side.

In the two-phase cable locking mechanism and the three-phase cable supporting positioning mechanism of the present invention, the side of the cable tie passing hole on the fixed lock head is provided with a cable tie locking device, and the cable tie locking device is controlled by a lock. ball, arc groove, cable tie locking plate, lock nut and locking bolt, the cable tie locking plate is provided with a cable tie locking bar hole, and one end of the cable tie locking bar hole Cooperate and communicate with the cable tie through the hole, and the other end is fixed on the lock head. The upper part of the cable tie locking plate is provided with an arc-shaped groove with a gradually shallower depth that communicates with the cable tie locking hole. A lock ball is arranged in the groove, and a lock nut is arranged on the cable tie locking hole on the side of the arc-shaped groove at the shallow end, and a lock bolt is arranged in the lock nut, and the lock bolt passes through the lock nut, tie The belt locking hole extends into the compression groove provided on the lock head, and the cable tie passes through the cable tie passing hole on the fixed lock head, the cable tie locking hole and is fixed by the locking ball and the locking bolt.

The two ends of the insulating pole according to the present invention are respectively provided with a rotation guide groove, and the rotation sleeve in the rotation matching mechanism directly above the rotation guide groove is provided with a threaded hole, and the said fixing bolt passes through the threaded hole Extend into the rotation guide groove for rotation positioning.

The connecting shaft in the three-phase cable support and positioning device according to the present invention is provided with a rotation guide groove, and the vertical pipe in the three-way connection bushing on the front side of the rotation guide groove is provided with a threaded hole. The fixing bolt extends into the rotation guide groove through the threaded hole to be rotated and fixed.

The insulating sheds on both sides of the horizontal tube of the three-way connection bushing of the present invention are provided with insulating sheds, which increase the creepage distance and prevent the surface of the insulating poles from being conductive in rainy and snowy weather, which affects the connection between the insulating cables. insulation distance.

Since the present invention is provided with a two-phase cable locking mechanism and a three-phase cable supporting and positioning mechanism, fixing two-phase cables can also fix three-phase cables simultaneously, and both the two-phase cable locking mechanism and the three-phase supporting and positioning mechanism are provided with There is a cable tie locking device, which can lock the cable tie to prevent displacement. At the same time, the two-phase cable locking mechanism is equipped with a rotating matching mechanism, which can meet the coordination between cables in different directions and ensure that the cables are not locked. Being damaged, it has the advantages of simple structure, convenient use, not easy to damage, and keeping a safe insulation distance.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a partially enlarged view of part A in Fig. 1 .

Fig. 3 is a partially enlarged view of part B in Fig. 1 .

Detailed ways

The present invention is further described below in conjunction with accompanying drawing:

As shown in the accompanying drawings, a isolation switch insulated cable bracket is provided with an insulating support rod 1, which is characterized in that the left and right sides of the insulating support rod 1 are symmetrically provided with two-phase cable locking mechanisms, and the two The phase cable locking mechanism is composed of a two-phase fixed lock head 2, a liner 3 and a cable tie 4. One end of the two-phase fixed lock head 2 is connected to the insulating pole 1, and the other end of the two-phase fixed lock head 2 is There is an arc liner 3 with an upper opening, and the fixed lock head 2 above the arc liner 3 is provided with a cable tie through hole 5, and one end of the cable tie 4 is connected to the lower end of the fixed lock head 2, The other end wraps the liner 3 and passes through the cable tie hole 5 above the fixed lock head 2 to realize the fixing of the distance between the insulated cables. The two-phase cable locking mechanism and the insulating pole 1 are provided with a rotating fit Mechanism, the rotating matching mechanism is composed of a rotating sleeve 6, a fixing bolt 7, a positioning plate 8, a connecting plate 9 and a connecting screw 10, and the opening end of the rotating sleeve 6 is sleeved on the insulating pole 1, The insulating sleeve 6 is provided with a fixing bolt 7, the fixing bolt 7 passes through the insulating sleeve 6 and then locks the insulating pole 1 to realize the fixing of the insulating pole 1, and the closed end of the rotating sleeve 6 is provided with a positioning plate 8. Below the positioning plate 8, there is a connecting plate 9 connected to the fixed lock head 2 in the two-phase cable locking mechanism. The connecting plate 9 and the positioning plate 8 are correspondingly provided with the same connecting holes, and the connecting holes are provided with The connecting screw 10, the lower end of the connecting screw 10 passes through the connecting holes on the positioning plate 8 and the connecting plate 9 in turn and is fixed by the lock nut, and the two-phase cable locking mechanism is realized through the connection between the connecting plate 9 and the positioning plate 8 The rotation in the horizontal direction of the rotating sleeve 6 realizes the rotation in the vertical direction of the two-phase cable locking mechanism, so as to better cooperate with the cable section and protect the cable. The middle part of the insulating pole 1 is provided with an insulating The umbrella skirt 11 increases the creepage distance, prevents the surface of the insulating pole from conducting in rainy and snowy weather, and affects the insulation distance between the insulating cables. The middle part of the insulating pole 1 is provided with a tee connection bushing 12, and the The three-way connection bushing 12 is divided into a horizontal pipe and a vertical pipe, the insulating pole 1 passes through the horizontal pipe of the three-way connection bushing 12, and the vertical pipe is provided with a three-phase cable support positioning mechanism, and the The three-phase cable support positioning device is composed of a three-phase fixed lock head 21, a liner, a cable tie, and a connecting shaft 13. The side of the three-phase fixed lock head 21 is provided with an arc liner, and the arc liner above the arc liner The three-phase fixed lock head is provided with a cable tie through hole, one end of the cable tie is connected to the bottom of the fixed lock head, and the other end wraps the arc liner and passes through the cable tie above the three-phase fixed lock head The hole realizes the fixing of the three-phase insulated cable. The three-phase fixed lock head in the three-phase cable support and positioning device is provided with a connecting shaft 13 below, and one end of the connecting shaft 13 is connected with the three-phase fixed lock head 21. , the other end extends into the standpipe in the three-way connection bushing 12 and is fixed by the fixing bolt 7 provided on the side, the fixed lock head in the two-phase cable locking mechanism and the three-phase cable support positioning mechanism The side of the cable tie passing hole 5 is provided with a cable tie locking device, and the cable tie locking device consists of a locking ball 14, an arc groove 15 , cable tie locking plate 16, lock nut 17 and locking bolt 18, the cable tie locking plate 16 is provided with a cable tie locking bar hole, one end of the cable tie locking bar hole is connected to The cable tie is connected through the hole 5, and the other end is fixed on the lock head. Above the cable tie locking plate 16, there is an arc-shaped groove 15 that communicates with the cable tie locking hole and gradually becomes shallower in depth. The arc groove 15 is provided with a lock ball 14, and the cable tie locking hole on the side of the arc groove 15 at the shallow end is provided with a lock nut 17, and the lock nut 17 is provided with a lock bolt 18, and the lock bolt 18 passes through the locking nut 17, the cable tie locking hole in turn and stretches into the compression groove 19 provided on the lock head, and the cable tie 4 passes through the cable tie passing hole 5, the cable tie The locking hole is fixed by the locking ball 14 and the locking bolt 18. The two ends of the insulating pole 1 are respectively provided with a rotation guide groove 20, and the rotation in the rotation matching mechanism directly above the rotation guide groove 20 The sleeve 6 is provided with a threaded hole, and the fixing bolt 7 is inserted into the rotation guide groove 20 through the thread hole for rotation positioning, and the connecting shaft 13 in the three-phase cable support and positioning device is provided with a rotation guide groove 20 , the standpipe in the three-way connection bushing 12 on the positive side of the rotation guide groove 20 is provided with threaded holes, and the described fixing bolts are inserted into the rotation guide groove through the threaded holes to be rotated and fixed. The insulating sheds 11 are provided on the insulating poles on both sides of the transverse tube connecting the bushings to increase the creepage distance, prevent the surface conduction of the insulating poles in rainy and snowy weather, and affect the insulation distance between the insulating cables.

When the present invention is in use, firstly, according to the position of the cable, the device is installed on the cable at the outlet end of the isolating switch. Rotate the two-phase cable locking mechanism with the connecting screw to fix the cooperating cable. When the cables on both sides are not in the same plane, you can fix the coordinating cable by rotating the rotating sleeve to prevent damage to the cable. At the same time, in the three-phase In the presence of cables, the three-phase cables can be fixed at the same time, so that the distance between the three-phase cables is greater than the minimum insulation distance, so as to prevent mutual influence and conduct electricity. After fixing the position, put the cable tie 4 through The cable tie on the fixed lock head 2 passes through the hole 5 and the cable tie locking hole and is tightened. Since the cable tie locking device is provided with an arc-shaped groove 15, when the cable tie 4 passes through the cable tie locking hole, it is pulled , the locking ball 14 moves back under the action of the cable tie to compress the cable tie to prevent the cable tie from protruding, and the part of the cable tie 4 that moves back moves down through the locking bolt 18 and is pressed into the compression groove 19 for further tightening. solid, thereby ensuring the tightness of the cable tie, the present invention is equipped with a two-phase cable locking mechanism and a three-phase cable support and positioning mechanism, and the two-phase cable can also be fixed at the same time when the two-phase cable is fixed, and the two-phase cable Both the locking mechanism and the three-phase support and positioning mechanism are equipped with a cable tie locking device, which can lock the cable tie to prevent displacement. Cooperate between the cables to ensure that the cables are not damaged. It has the advantages of simple structure, convenient use, not easy to damage, and maintaining a safe insulation distance.

Claims (4)

1. An insulated cable bracket of an isolating switch is provided with an insulated supporting rod and is characterized in that two-phase cable locking mechanisms are symmetrically arranged on the left side and the right side of the insulated supporting rod, each two-phase cable locking mechanism consists of two-phase fixed lock heads, a liner and a ribbon, one end of each two-phase fixed lock head is connected with the insulated supporting rod, the other end of each two-phase fixed lock head is provided with an arc-shaped liner with an opening on the upper part, the fixed lock head above the arc-shaped liner is provided with a ribbon passing hole, one end of the ribbon is connected with the lower end of the fixed lock head, the other end of the ribbon wraps the liner and passes through the ribbon passing hole above the fixed lock head to realize the fixation of the distance between the insulated cables, a rotation matching mechanism is arranged between the two-phase cable locking mechanisms and the insulated supporting rod, and the rotation matching mechanism consists of a rotation sleeve, a fixing bolt, a positioning plate, a connecting plate and a connecting screw rod, the opening end of the rotary sleeve is sleeved on the insulating support rod, the insulating sleeve is provided with a fixing bolt, the fixing bolt penetrates through the insulating sleeve and further locks the insulating support rod to realize the fixation of the insulating support rod, the closed end of the rotary sleeve is provided with a positioning plate, a connecting plate connected with a fixed lock head in the two-phase cable locking mechanism is arranged below the positioning plate, the connecting plate and the positioning plate are correspondingly provided with the same connecting holes, connecting screws are arranged in the connecting holes, the lower ends of the connecting screws sequentially penetrate through the connecting holes in the positioning plate and the connecting plate and are fixed by locking nuts, the horizontal rotation of the two-phase cable locking mechanism is realized through the connection between the connecting plate and the positioning plate, the vertical rotation of the two-phase cable locking mechanism is realized through the rotation of the rotary sleeve, the middle part of the insulating support rod is provided with an insulating umbrella skirt, and the middle part of the insulating support rod is provided with a three-way connecting shaft sleeve, the three-way connecting shaft sleeve is divided into a transverse pipe and a vertical pipe, the insulating support rod penetrates through the transverse pipe of the three-way connecting shaft sleeve, a three-phase cable supporting and positioning mechanism is arranged on the vertical pipe, the three-phase cable supporting and positioning device is composed of a three-phase fixed lock head, a gasket, a ribbon and a connecting shaft, an arc-shaped gasket is arranged on the side face of the three-phase fixed lock head, the ribbon penetrates through a hole on the three-phase fixed lock head above the arc-shaped gasket, one end of the ribbon is connected with the lower part of the fixed lock head, the other end of the ribbon wraps the arc-shaped gasket and penetrates through the ribbon penetrating hole on the upper part of the three-phase fixed lock head to realize the fixation of the three-phase insulating cable, the connecting shaft is arranged below the three-phase fixed lock head in the three-phase cable supporting and positioning device, one end of the connecting shaft is connected with the three-phase fixed lock head, the other end of the connecting shaft extends into the vertical pipe in the three-way connecting shaft sleeve and is fixed through a fixing bolt arranged on the side face, the side of the ribbon passing hole on the fixed lock head in the two-phase cable locking mechanism and the three-phase cable supporting and positioning mechanism is provided with a ribbon locking device, the ribbon locking device consists of a locking ball, an arc-shaped groove, a ribbon locking plate, a locking nut and a locking bolt, the ribbon locking plate is provided with a ribbon locking strip hole, one end of the ribbon locking strip hole is matched and communicated with the ribbon passing hole, the other end of the ribbon locking strip hole is fixed on the lock head, the upper part of the ribbon locking plate is provided with the arc-shaped groove which is communicated with the ribbon locking hole and gradually becomes shallow in depth, the arc-shaped groove is internally provided with the locking ball, the ribbon locking hole on the side of the shallow end of the arc-shaped groove is provided with the locking nut, the locking bolt is internally provided with the locking bolt, the locking bolt sequentially passes through the locking nut and the ribbon locking hole and extends into a pressing groove arranged on the lock head, the ribbon passes through the ribbon passing hole and the ribbon locking hole which sequentially pass through the fixed lock head and is fixed through the locking ball and the locking bolt.

2. The isolated switch insulated cable bracket of claim 1, wherein the two ends of the insulated support rod are respectively provided with a rotary guide groove, a rotary sleeve in the rotary matching mechanism right above the rotary guide groove is provided with a threaded hole, and the fixing bolt extends into the rotary guide groove through the threaded hole for rotary positioning.

3. The isolated switch insulated cable bracket of claim 1, wherein a rotation guide groove is formed on the connecting shaft of the three-phase cable supporting and positioning device, a threaded hole is formed in a vertical pipe in a three-way connecting shaft sleeve on the front side surface of the rotation guide groove, and the fixing bolt extends into the rotation guide groove through the threaded hole to be rotationally fixed.

4. The isolated switch insulated cable bracket of claim 1, wherein the insulated support rods on both sides of the transverse tube of the three-way connection shaft sleeve are provided with insulated sheds.

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