CN209841999U - A liftable insulating tool electrical withstand voltage test wiring device - Google Patents

Abstract

The utility model discloses a liftable insulating tool electrical withstand voltage test wiring device, which relates to the technical field of withstand voltage test. In order to solve the problem that the safety distance of the supporting frame is insufficient and cannot be adjusted during the existing test, the utility model includes an electric hoist and an electric hoist. The composite insulator is driven by the gourd and moves up and down. The lower end of the composite insulator is provided with a metal suspension frame for hanging insulation tools. The suspension frame is connected with a test voltage connection line and a short-circuit device. And the metal clip used to clamp the insulating tool, the ground electrode is grounded, one end of the wire is connected to the ground electrode, and the other end is connected to the metal clip, and the safety distance to the ground can be adjusted by adjusting the height of the metal suspension frame to adapt to different levels of voltage tests. The utility model has the advantages of simple structure, convenient operation, adjustable safety distance to the ground, can carry out tests of different levels of voltage, can be applied to various types of insulating tools, and has wide application prospects.

Description

A liftable insulating tool electrical withstand voltage test wiring device

technical field

The utility model relates to the technical field of withstand voltage test, in particular to a liftable electrical withstand voltage test wiring device for insulating tools.

Background technique

According to the "State Grid Corporation Electricity Safety Work Regulations", insulating rods, insulating ropes and other insulating rod safety tools (insulating tools) need to undergo a withstand voltage test once a year to verify their insulation performance. This is because this type of insulating tool has been used in live live operations for a long time, and as the number of uses increases, it will inevitably be aged, damaged or damp, and its insulating performance will also be greatly reduced. If such insulated tools with poor insulation performance are applied to live live operations, it is very easy to cause harm to users. Since aged, damaged or damp insulating tools are subject to high voltage, breakdown, flashover or overheating of insulating tools will occur, so the withstand voltage test is an effective method to verify the insulation performance of insulating tools.

When testing insulating tools, there are a large number of them and various types. Different voltage levels of insulating tools have different withstand voltage test lengths and different wire diameters. For example, 500kV is 4.1 meters, 220kV is 2.1 meters, and 110kV is 1.3 meters. The current commonly used test method for insulating tools is usually to place the insulating tool horizontally (horizontally) on an insulating support frame, one end is wound with a copper wire and grounded, and the other end is connected to the high-voltage end of the test transformer. For example, when the insulation tool voltage is 500kV system, because the test voltage is as high as 580kV, the safety distance to the ground is relatively high. If the insulation tool is placed horizontally, the insulation requirements are high, and the cost of building the support frame is very high. Some experimenters even use segmentation ( The insulated tools are segmented) for withstand voltage test. This segmented test method does not meet the requirements of the "Preventive Test Regulations for Tools, Devices and Equipment for Live Work" (DL/T976-2017), and the results obtained from the test are not reliable. .

Utility model content

In order to solve the above problems, the utility model provides a liftable insulation tool electrical withstand voltage test wiring device, which is realized by the following technical scheme:

A liftable electrical withstand voltage test wiring device for insulated tools, including an electric hoist and a composite insulator driven by the electric hoist to move up and down, the lower end of the composite insulator is provided with a metal suspension frame for hanging insulating tools. The metal suspension frame is connected with a test voltage connection line; it also includes a short wiring device, the short wiring device includes a wire, a ground electrode and a metal clip for clamping an insulating tool, the ground electrode is grounded, and the wire One end is connected to the ground electrode, and the other end is connected to the metal clip.

Further, the electric hoist includes a reel, a suspension arm, a lifting rope, a hook, a motor, a button switch and a rotating shaft, and the motor is arranged on the reel and connected with the rotating shaft through a coupling to drive the The rotating shaft rotates, the rotating shaft is arranged in the reel, the lifting rope is wound on the rotating shaft, the hook is arranged on the free end of the lifting rope, and the suspension arm is arranged on the reel , the button switch is connected with the motor to control the motor.

Further, it also includes a fixed fulcrum and a cross bar fixed on the fixed fulcrum, and the suspension arm is suspended on the cross bar.

Further, the composite insulator includes an upper hanging ring, a lower hanging ring and an insulator body, the upper hanging ring is located at the upper end of the insulator body, and the lower hanging ring is located at the lower end of the insulator body.

Further, the metal suspension frame includes a metal rectangular frame and a U-shaped ring, the U-shaped ring is located above the metal rectangular frame and is connected to the four corners of the metal rectangular frame by hanging ropes, and the metal rectangular frame Metal S-shaped hooks are hung on the four sides, and the test voltage connection line is connected to the metal rectangular frame.

Further, the material of the metal rectangular frame is metal copper or stainless steel or aluminum alloy; the material of the metal S-shaped hook is metal copper or stainless steel or aluminum alloy.

Further, the suspension rope is a steel wire rope.

Further, a spring is provided on the metal clip, a binding rope is provided on the free end of the spring, and a hook is provided on the binding rope.

Further, the wire is multi-strand annealed copper wire or a copper braid; the binding rope is bare copper wire; the hook is a copper hook; and the spring is a metal spring.

Further, the composite insulator is in the form of multi-section series connection.

Compared with the prior art, the beneficial effect of the utility model is that the utility model provides a lifting insulating tool electrical withstand voltage test wiring device, and the height of the insulating tool test can be adjusted by adjusting the height of the metal suspension frame. The safe distance to the ground is suitable for tests of different levels of voltage. The utility model has the advantages of simple structure, convenient operation, adjustable safety distance to the ground, can carry out tests of different levels of voltage, can be applied to various types of insulating tools, and has wide application prospects.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the implementation schematic diagram of the utility model.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, the preferred real-time example of the present utility model provides a kind of electrical voltage withstand test wiring device that can be lifted and lowered, and mainly includes a fixed fulcrum 10, a cross bar 20, an electric hoist 30, a composite insulator 40, and a metal suspension frame 50 And short wiring device 70.

Specifically, as shown in Figure 1, the electric hoist 30 includes a reel 37, a suspension arm 31, a lifting rope 32, a hook 33, a motor 34, a button switch 35 and a rotating shaft 36, and the motor 34 is located on the reel 37 and connected to the reel 37. The shaft device is connected with the rotating shaft 36 to drive the rotating shaft 36 to rotate. The rotating shaft 36 is arranged in the reel 37. The lifting rope 32 is wound on the rotating shaft 36. The lifting rope 32 is a steel wire rope with good strength and can bear large pulling force. The hook 33 is located at On the free end of the lifting rope 32, the suspension arm 31 is arranged on the reel 37, and the button switch 35 is connected with the motor 34, and is used for remotely controlling the motor 34 through a cable. The motor 34 can be controlled remotely through the button switch 35 (motor start and stop, forward rotation, reverse rotation, etc.), the motor 34 drives the rotating shaft 36 to rotate, and when the rotating shaft 36 rotates, the lifting rope 32 wound on the rotating shaft 36 will roll up or loosen to make the lifting The hook 33 at the lower end of the rope 32 rises or falls, thereby driving the composite insulator 40 to rise or fall.

The fixed fulcrum 10 is a building or a high-altitude support, etc., the cross bar 20 is horizontally fixed on the fixed fulcrum 10 , and the suspension arm 31 is fixedly suspended on the cross bar 20 .

The composite insulator 40 includes an upper hanging ring 41, a lower hanging ring 43 and an insulator body 42, the upper hanging ring 41 is located at the upper end of the insulator body 42, the lower hanging ring 43 is located at the lower end of the insulator body 42, and the upper hanging ring 41 is hooked on the hook 33 , under the action of the electric hoist 30, the composite insulator 40 can move up and down. In a preferred embodiment, the composite insulator 40 is in the form of multi-node series, so as to meet the requirements of different voltage levels.

The metal suspension frame 50 comprises a metal rectangular frame 53 and a U-shaped ring 51. The U-shaped ring 51 is located above the metal rectangular frame 53 and is connected with the four corners of the metal rectangular frame 53 by a suspension rope 52. The suspension rope 52 is a steel wire rope with good strength and can To withstand a large pulling force; the U-shaped ring 51 is hung on the lower hanging ring 43 . The metal rectangular frame 53 is made up of four 30mm diameter stainless steel pipes with the same length, forming a square structure placed horizontally. The four sides of the metal rectangular frame 53 are hung with metal S-shaped hooks 54 respectively. The material of the metal S-shaped hooks 54 is Stainless steel and metal S-shaped hooks 54 are used to hang and hook insulated tools, and the test voltage connecting wires 55 are connected to the metal rectangular frame 53 . A plurality of metal S-shaped hooks 54 can hang and fasten a plurality of insulating tools, so as to realize simultaneous testing of a plurality of insulating tools without affecting each other, thereby improving test efficiency.

The short wiring device 70 includes a lead 74, a ground electrode 75 and a metal clip 73 for clamping an insulating tool; the ground electrode 75 is buried underground for grounding; the lead 74 is a multi-strand annealed copper wire, and one end is connected to the ground electrode 75, The other end is connected to the metal clip 73 . Metal clip 73 is provided with spring 72, and spring 72 is a metal spring, and the free end of spring 72 is provided with binding rope 71, and binding rope 71 is provided with hook, and binding rope 71 is a bare copper wire, and hook is a copper hook. The setting of spring 72 and binding rope 71 is to better realize the stable connection between metal clip 73 and insulating tool. Metal clip 73 has a certain clamping force when clamping insulating tool, and then by winding spring 72 and binding rope 71 on On the insulating tool, the hook on the binding rope 71 hooks the spring 72 or the metal clip 73 to realize the binding and winding of the insulating tool, and finally realizes fixing. The spring 72 is a metal spring, the binding rope 71 is a bare copper wire and the hook is a copper hook. It can also realize good contact between the insulating tool and the metal clip 73 and the wire 74, which can effectively prevent the connection cable and the clamp from loosening and can be quickly fixed on the quilt. Test the insulation on the tool for a good ground.

Please refer to Fig. 2, take insulating rod 60 to carry out electrical withstand voltage test as example, during implementation, control motor 34 by button switch 35 and make composite insulator 40 and metal suspension frame 50 be positioned at a suitable height, now metal rectangular frame 53 distances The ground is about 1.5 meters; the metal part 61 of the insulating rod 60 is hooked to the metal S-shaped hook 54, and then according to the requirements of the regulations, after the distance L is determined, the metal clip 73 is clamped on the insulating body 62 of the insulating rod 60 (here At the same time, the distance between the position of the metal clip 73 on the insulating body 62 and the metal part 61 of the insulating rod 60 is L), and the spring 72 and the binding rope 71 are wound around the insulating body 62 at the position where the metal clip 73 clamps the insulating body 62 Hook the hook to the spring 72 after about 2-3 turns, and rely on the contraction of the spring 72 to realize the tightness of the insulating body 62; similarly, when it is necessary to electrically withstand multiple insulating rods (or other insulating tools) For the pressure test, a plurality of insulating rods (or other insulating tools) can be hung on other metal S-shaped hooks 54; the motor 34 is controlled by the button switch 35 to raise the composite insulator 40 and the metal suspension frame 50 to a suitable height. When the height of the metal clip 73 from the ground is not less than 1 meter (the specific height is subject to the requirements of relevant regulations); after the test voltage connection line 55 is connected to the output of the test transformer, the power frequency withstand voltage test can be carried out. After the test ends, the insulating rod 60 is lowered by manipulating the electric hoist 30, then the insulating rod 60 is taken off from the metal suspension frame 50 and the metal clip 73, the spring 72 and the binding rope 71 etc. are taken off from the insulating rod 60.

The utility model has the advantages of simple structure, easy operation, adjustable safety distance to the ground, and can carry out tests of voltages of different levels. Insulated tools, capable of batch testing, high efficiency, and broad application prospects.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed by the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A lifting and lowering electrical withstand voltage test wiring device for insulating tools, characterized in that it includes an electric hoist (30) and a composite insulator (40) that moves up and down driven by the electric hoist (30). The lower end of the insulator (40) is provided with a metal suspension frame (50) for hanging insulating tools, and the metal suspension frame (50) is connected with a test voltage connection line (55); it also includes a short wiring device (70), so The short wiring device (70) includes a wire (74), a grounding electrode (75) and a metal clip (73) for clamping an insulating tool, the grounding electrode (75) is grounded, and one end of the wire (74) is connected to The other end of the ground electrode (75) is connected to the metal clip (73). 2. The liftable wiring device for electrical withstand voltage test of insulating tools according to claim 1, characterized in that: the electric hoist (30) includes a reel (37), a suspension arm (31), a lifting rope (32 ), a hook (33), a motor (34), a button switch (35) and a shaft (36), the motor (34) is set on the reel (37) and is connected to the shaft (36) through a coupling connected to drive the rotating shaft (36) to rotate, the rotating shaft (36) is arranged in the reel (37), the lifting rope (32) is wound on the rotating shaft (36), and the hook (33 ) is set on the free end of the lifting rope (32), the suspension arm (31) is set on the reel (37), and the button switch (35) is connected with the motor (34) for The motor (34) is controlled. 3. The electrical withstand voltage test wiring device for lifting insulating tools according to claim 2, characterized in that it also includes a fixed fulcrum (10) and a cross bar (20) fixed on the fixed fulcrum (10) ), the suspension arm (31) is suspended on the cross bar (20). 4. The electrical withstand voltage test wiring device for lifting insulating tools according to claim 1, characterized in that: the composite insulator (40) includes an upper hanging ring (41), a lower hanging ring (43) and an insulator body (42), the upper hanging ring (41) is located at the upper end of the insulator body (42), and the lower hanging ring (43) is located at the lower end of the insulator body (42). 5. The electrical withstand voltage test wiring device for lifting insulating tools according to claim 1, characterized in that: the metal suspension frame (50) includes a metal rectangular frame (53) and a U-shaped ring (51), the The U-shaped ring (51) is located above the metal rectangular frame (53) and is connected to the four corners of the metal rectangular frame (53) by hanging ropes (52), and the four sides of the metal rectangular frame (53) are suspended There is a metal S-shaped hook (54), and the test voltage connection line (55) is connected to the metal rectangular frame (53). 6. The lifting electrical withstand voltage test wiring device for insulating tools according to claim 5, characterized in that: the metal rectangular frame (53) is made of metal copper or stainless steel or aluminum alloy; the metal S-shaped hook (54) is made of metal copper or stainless steel or aluminum alloy. 7. The liftable wiring device for electrical withstand voltage test of insulated tools according to claim 5, characterized in that: the suspension rope (52) is a steel wire rope. 8. The liftable wiring device for electrical withstand voltage test of insulated tools according to claim 1, characterized in that: the metal clip (73) is provided with a spring (72), and the free end of the spring (72) is A binding rope (71) is provided, and a hook is provided on the binding rope (71). 9. The lifting electrical withstand voltage test wiring device for insulated tools according to claim 8, characterized in that: the wire (74) is a multi-strand annealed copper wire or a copper braid; the binding rope (71) is The bare copper wire; the hook is a copper hook; the spring (72) is a metal spring. 10. The lifting and lowering wiring device for electrical withstand voltage test of insulated tools according to claim 1, characterized in that: the composite insulator (40) is in the form of multi-section series connection.