CN202094322U - Multipurpose lead wiring device of large-scale transformer test - Google Patents

Abstract

The utility model relates to the technical field of electric power system wires, in particular to a large-scale transformer test multipurpose wire connection device. It is to connect the two surfaces of one end of the connecting plate with the two conductive contact plates of the connecting clip respectively, and the contraction spring is connected between the conductive contact plates of the two connecting clips; the other end of the connecting plate is connected with the connecting inverted rod, and the connecting rod The other end is connected with pull rod. The utility model can greatly shorten the power outage time caused by the maintenance and transformation of electric equipment, enable the power outage circuit to recover power supply as soon as possible, and ensure the reliability of electricity used in production and life in enterprises. The utility model also has the characteristics of small size, light weight, high reliability, and convenient portability, which meets the requirements of flexible and maneuverable electrical high-voltage tests, and can be applied to the handover and preventive tests of large transformers with a voltage level of 66kV and above in the power system .

Description

Large-scale transformer test multi-purpose wire connection device

technical field

The utility model relates to the technical field of wires in electric power systems, in particular to a large-scale transformer test multipurpose wire connection device.

Background technique

As an important part of the power system, the transformer is used to transform voltage to facilitate power transmission. After the voltage is boosted by the step-up transformer, the line loss can be reduced, the economy of power transmission can be improved, and the purpose of long-distance power transmission can be achieved. The step-down transformer can change the high voltage into the various levels of voltage required by the user to meet the needs of the user. In order to ensure the reliable and stable operation of the transformer, it is necessary to make factory, handover and preventive tests after the transformer leaves the factory, after installation and during operation, and provide test data to check the health of the transformer, so as to ensure the safe and reliable operation of the power system.

Shenyang Power Supply Company currently has more than 200 large-scale transformers with a voltage level of 66kV and above. With the arrival of the National Games and the increasing demand for electricity in the city, there are a large number of substations under construction or to be built. There are a large number of transformer handover and preventive test tasks every year, and during the handover and preventive test of each transformer, climbing the bushing to change the wiring becomes a huge workload, because different equipment is specially equipped with unused wiring , the emergence of this problem greatly reduces the work efficiency, and it takes a lot of work time to change the wiring repeatedly. increased labor input.

Utility model content

The utility model aims at the problems existing in the above-mentioned prior art, and provides a large-scale transformer test multi-purpose wire connection device. The purpose of the utility model is to provide a large-scale transformer test multipurpose lead device with high safety performance, small size, light weight and convenient portability.

The technical scheme that the utility model solves its technical problem adopts is:

The large-scale transformer test multi-purpose wire wiring device is to connect the two surfaces of one end of the connecting plate with the two conductive contact plates of the terminal clip respectively. A contraction spring is connected between the conductive contact plates of the two terminal clamps. There is a retractable spring fixing bolt knob and a retractable spring fixing bolt knob at the upper end of the terminal clip;

The other end of the connecting plate is connected with the connecting inverted rod, the other end of the connecting inverted rod is inserted into the draw-in groove of the first section of the tie rod, and the other end of the draw-in groove of the first section of the tie rod is connected with the pull rod;

The conductive short wire on the connecting plate is connected to the conductive contact plate of the terminal clamp; the connecting plate is provided with a test lead fixing bolt, which is connected to one end of the multi-purpose test lead, and the other end of the multi-purpose test lead is connected to the test equipment end.

One end of the multi-purpose test lead is respectively connected with a fork-shaped plug for connecting the voltage line at the terminal of the terminal clamp and a fork-shaped plug for the current line at the terminal of the terminal clamp through a wire, and a fork-shaped plug for the voltage line at the terminal of the connecting terminal and a fork-shaped plug for connecting the voltage line at the terminal of the terminal clamp and the current line at the terminal for connecting the terminal clamp. The fork-shaped plugs are respectively connected to the fixing bolts of the test leads;

The other end of the multi-purpose test lead is respectively connected to the voltage lead connected to the test equipment end and the current lead connected to the test equipment end;

The other end of the voltage wire connected to the test equipment terminal is connected to the voltage column plug of the test equipment terminal, and the voltage column plug of the test equipment terminal is connected to a spare fork plug connected to the voltage line of the test equipment terminal through an insulating rubber rope;

The other end of the current wire connected to the test equipment end is connected to the cylindrical plug of the current wire connected to the test equipment end, and the cylindrical plug connected to the current wire of the test equipment end is connected to a spare fork-shaped plug connected to the current wire of the test equipment end through an insulating rubber rope;

The plug for connecting the voltage cylindrical line of the test equipment end, the spare fork plug for connecting the voltage line of the test equipment end, the cylindrical plug for connecting the current line of the test equipment end, and the spare fork plug for connecting the current line of the test equipment end are all connected to the test equipment end.

The multi-purpose test lead is sequentially provided outside the wire core: an insulating layer, a shielding layer and an outer insulating layer.

The conductive contact plate of the connecting clip is a flat plate structure, and the openings of the two contact plates are V-shaped openings; the lower end of the connecting clip shrinks the spring fixing bolt knob and the connecting clip upper end shrinks the spring fixing bolt knob and is fixedly connected to the shrinking spring, and the four shrinking springs Both are fixed between two contact plates by screws.

A bayonet pin is provided on the connecting inverted rod, and the bayonet pin is a cylindrical structure.

There are two conductive short wires, which are respectively arranged on both sides of the connection plate, and are respectively connected with the two conductive contact plates of the connecting clip.

The conductive contact plate of the terminal clip is made of copper material, and the connecting plate and connecting bar are made of aluminum alloy material.

The beneficial effects of the present invention are:

Due to the development and use of the multi-purpose wire connection device for large-scale transformer testing of the present invention, the time for the large-scale transformer handover test at a voltage level of 66kV and above is reduced from the original 4 hours to the current 2.5 hours, and the average number of climbing bushing slips is reduced from the original From 0.35 times to 0 times, the number of operators was reduced from 4 to 3, and the average operation time was shortened by more than 1.5 hours. This also greatly shortens the power outage time caused by the maintenance and transformation of power equipment, enables the power outage line to resume power supply as soon as possible, and ensures the reliability of power consumption for enterprise production and people's daily life. The present invention also has the characteristics of small size, light weight, high reliability, and portability, meets the requirements of flexible and maneuverable electrical high-voltage tests, and can be applied to the handover and preventive tests of large-scale transformers with a voltage level of 66kV and above in the power system.

Description of drawings

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

FIG. 2 is a side view of FIG. 1 .

Fig. 3 is a structural schematic diagram of the conductive contact plate of the wiring clip in the utility model.

Fig. 4 is a schematic diagram of the structure of the connecting plate in the utility model.

Fig. 5 is a schematic diagram of the structure of the connecting inverted rod in the utility model.

Figure 6 is a top view of Figure 5;

Fig. 7 is a side view of Fig. 5;

Fig. 8 is a schematic diagram of the wire structure in the present invention.

Fig. 9 is a schematic diagram of the structure of the multi-purpose test wire connected to the test instrument equipment end plug in the utility model;

Fig. 10 is a schematic diagram of the structure of the multi-purpose test lead connected to the plug at the end of the connecting plate in the utility model.

Fig. 11 is a schematic diagram of the structure of the first section of the draw bar;

Fig. 12 is a structural schematic diagram of the implementation state of the utility model.

In the figure: the conductive contact plate 1 of the wiring clip, the connecting plate 2, the connecting inverted rod 3, the bayonet pin 4, the conductive short wire 5, the test lead fixing bolt 6, the contraction spring fixing bolt knob 7 at the lower end of the wiring clip, the connecting plate fixing bolt 8, wiring The upper end of the clamp retracts the spring fixing bolt knob 9, the conductive short wire fixing bolt 10, connects the inverted rod and the connecting plate fixing bolt 11, connects the test equipment end voltage cylindrical line plug 12, connects the test equipment end voltage line spare fork plug 13, connects the test Equipment end current line cylindrical plug 14, spare fork plug 15 for connecting to test equipment end current line, connect test equipment end voltage wire 16, connect test equipment end current wire 17, multipurpose test wire 18, wire core 19, insulation layer 20 , shielding layer 21, outer insulating layer 22, fork-shaped plug 23 for connecting the voltage line at the terminal of the terminal clamp, fork-shaped plug 24 for connecting the current line at the terminal of the terminal clamp, a pull rod 25, a slot 26 at the first section of the pull rod, a contraction spring 27, and a high-voltage test instrument 28. The wiring board 29 at the first section of the bushing of the equipment under test.

Below in conjunction with the specific embodiment of the utility model and accompanying drawing, the utility model is described in detail.

Detailed ways

Example 1:

As shown in Figures 1-3, the utility model is a large-scale transformer test multi-purpose wire connection device, which includes four parts of a connection clip, a connecting plate, a connection inverted bar and a multi-purpose test wire.

Connection clip part: the two surfaces of one end of the connection plate 2 are respectively connected with two connection clip conductive contact plates 1 made of copper material, the connection plate 2 of the connection clip and the connection clip conductive contact plate 1 are connected through the connection clip The connecting plate fixing bolt 8 of the connecting clip is connected, and the connecting plate 2 of the wiring clip is connected with the connecting clip and the pull bar junction and the inverted bar 3 is connected with the connecting plate fixing bolt 11 by the connecting inverted bar of the connecting clip. A contraction spring 27 is connected between the two connection clip conductive contact plates 1 , and a contraction spring fixing bolt knob 7 and a contraction spring fixing bolt knob 9 at the upper end of the connection clip are provided on the connection clip conductive contact plate 1 . The conductive contact plate 1 of the connecting clip is a flat plate structure, and the openings of the two contact plates are V-shaped openings; the lower end of the connecting clip shrinks the spring fixing bolt knob 7 and the upper end of the connecting clip shrinks the spring fixing bolt knob 9 respectively with 4 shrinking springs 27 links to each other, and 4 contraction springs 27 are fixed between two contact plates by screw rod respectively.

Connecting inverted rod part: as shown in Figure 5-Figure 7, the other end of the connecting plate 2 made of aluminum alloy material is connected with the connecting inverted rod 3 composed of aluminum alloy material, and the other end of the connecting inverted rod 3 is inserted into the pull rod In the first section of the slot 26 , the other end of the first section of the draw bar 26 is connected to the pull rod 25 , as shown in FIG. 11 . The said connecting inverted rod 3 is provided with a bayonet pin 4, and the bayonet pin 4 is a cylindrical structure.

The connecting plate part: as shown in FIG. 4 , it is connected to the two conductive contact plates 1 of the connecting clip by two conductive short wires 5 on both sides of the connecting plate 2 respectively through the conductive short wire fixing bolts 10 . The connecting plate 2 is provided with a test lead fixing bolt 6, and the test lead fixing bolt 6 is connected with one end of a multipurpose test lead 18, and the other end of the multipurpose test lead 18 is connected with a high voltage test instrument 28.

Multi-purpose test wire part: as shown in Figures 8-10, the multi-purpose test wire 18 is provided with an insulating layer 20, a shielding layer 21 and an outer insulating layer 22 in sequence outside the core 19. One end of the multipurpose test lead 18 is respectively connected with the fork-shaped plug 23 of the connection clamp terminal voltage line and the fork-shaped plug 24 of the connection terminal clamp end current line by wires, and the fork-shaped plug 23 of the connection terminal voltage line of the connection terminal clamp terminal and the connection terminal current wire of the terminal clamp. The wire fork plugs 24 are respectively connected to the test lead fixing bolts 6 . The other end of the multi-purpose test lead 18 is respectively connected with a voltage lead 16 connected to the test equipment end and a current lead 17 connected to the test equipment end. Connect the other end of the test equipment terminal voltage lead 16 to connect the test equipment terminal voltage columnar line plug 12, and the test equipment terminal voltage columnar line plug 12 is connected with a spare fork plug 13 connected to the test equipment terminal voltage line by an insulating rubber rope. The other end of the current lead 17 connected to the test equipment end is connected to the cylindrical plug 14 connected to the current line of the test equipment end, and the cylindrical plug 14 connected to the current line of the test equipment end is connected to a spare fork plug 15 connected to the current line of the test equipment end through an insulating rubber rope. . Connect the test equipment terminal voltage cylindrical line plug 12, connect the test equipment terminal voltage line spare fork plug 13, connect the test equipment terminal current line cylindrical plug 14, connect the test equipment terminal current line spare fork plug 15 all with the test equipment terminal connected.

When in use, as shown in Figure 12, Figure 12 is a schematic diagram of the utility model's implementation state structure, which is a wiring diagram of the large-scale transformer test multi-purpose wire connection device described in the utility model during the high-voltage test. The first is the connection clip part. If the primary bushing of a 220kV transformer is too high, it will waste a lot of time to repeatedly climb the bushing to change the test wiring, and it will also bring a huge safety hazard. Now use the large-scale transformer test multi-purpose wire wiring device described in the utility model and just can change test wiring without climbing the transformer once bushing again.

First, insert the connection test equipment end voltage cylindrical line plug 12 on the multipurpose test lead 18 into the spare fork plug 13 of the connection test equipment end voltage line, and insert the connection test equipment end current line cylindrical plug 14 into the connection test equipment On the spare fork plug 15 of the terminal current line, the spare fork plug 13 of the connection test equipment terminal voltage line and the spare fork plug 15 of the connection test equipment terminal current line are connected on the wire fixing bolts of the high voltage test instrument 28.

Then the connection clamp end voltage line fork plug 23 on the multipurpose test lead 18 and the connection clamp end current line fork plug 24 ends are fixed to the connecting plate of the large transformer test multipurpose wire wiring device described in the utility model 2 on the test wire fixed on the bolt 6, and then insert the connecting inverted rod 3 into the draw-in slot 26 of the first section of the pull rod and lock it by connecting the inverted rod bayonet pin 4, and then the tester will test the multi-purpose large-scale transformer described in the utility model. The wire wiring device is lifted to the first section of the tested phase bushing of the large-scale equipment transformer through the pull rod 25. After the opening of the conductive contact plate 1 of the wiring clip is connected with the bushing terminal board at the connection of the large-scale equipment, the tester pulls down the pull rod 25 forcefully, and uses The bushing wiring board opens the V-shaped opening of the conductive contact plate 1 of the wiring clip. Under the action of the contraction spring fixing bolt knob 7 at the lower end of the wiring device of the present invention and the contraction spring fixing bolt knob 9 at the upper end of the wiring clip, the two wiring clips are in conductive contact. Board 1 will tightly clamp the casing first section wiring board 29 of the equipment under test, then turn the pull rod 25, unscrew the connecting inverted rod bayonet pin 4 out of the pull rod first section slot 26, retract the pull rod 25, and complete the wiring.

The design of the 18 parts of the multi-purpose test wire described in the utility model has fully considered the large-scale transformer handover, and the preventive test covers the maximum voltage and current peak value required by the insulation test item, and the insulation level of the wire can fully meet the requirements of the voltage and current peak value. . At the same time, the mechanical strength and tensile strength of the wire can also fully meet the requirements of outdoor tests, and can maintain good mechanical strength and insulation effect at temperatures between -30°C and 40°C.

The utility model also considers the diversification of different types of test equipment interfaces, and the connection end of the multipurpose test lead 18 and the equipment is designed as a cylindrical plug 12 for connecting the voltage line of the test equipment end, and a spare fork plug for connecting the voltage line of the test equipment end 13. Connect the cylindrical plug 14 of the current wire at the test equipment end, and connect the spare fork plug 15 of the current wire at the test equipment end. It fully meets the interface requirements of all devices currently in use. Simultaneously connect the spare fork-shaped plug 13 of the test equipment terminal voltage line, and connect the spare fork-shaped plug 15 of the test equipment terminal current line. When in use, you only need to insert the cylindrical plug 12 connected to the voltage cylindrical plug 12 of the test equipment end and the cylindrical plug 14 connected to the current wire of the test equipment end into the spare fork connected to the voltage line of the test equipment end. Plug 13, connected to the test equipment terminal current wire, the spare fork plug 15 can be used at the end of the fork terminal.

The multi-purpose test wire 18 described in the utility model can be connected with various test instruments and equipment. The multi-purpose test lead 18 is connected to the plugs of the test equipment end, which are respectively cylindrical and fork-shaped. They are insulated from each other and cannot conduct electricity when they are not working. Only when necessary, the corresponding plugs can be connected to conduct electricity.

Claims (7)

1. Large-scale transformer test multi-purpose wire connection device, which is characterized in that: the two surfaces of one end of the connecting plate (2) are respectively connected to the two connecting clip conductive contact plates (1), and the two connecting clip conductive contact plates (1) A contraction spring (27) is connected between them, and a contraction spring fixing bolt knob (7) and a contraction spring fixing bolt knob (9) at the upper end of the terminal clamp are provided on the conductive contact plate (1) of the terminal clip; The other end of the connecting plate (2) is connected with the connecting inverted rod (3), and the other end of the connecting inverted rod (3) is inserted into the first draw-in slot (26) of the tie rod, and the other end of the first draw-in slot (26) of the draw bar is connected to the Pull bar (25) links to each other; The conductive short wire (5) on the connection plate (2) is connected to the conductive contact plate (1) of the terminal clamp; the connection plate (2) is provided with a test lead fixing bolt (6), and the test lead fixing bolt (6) is connected to the multi-purpose test One end of the lead (18) is connected, and the other end of the multipurpose test lead (18) is connected with the test equipment end. 2. The large-scale transformer test multi-purpose lead wiring device according to claim 1, characterized in that: one end of the multi-purpose test lead (18) is respectively connected to a fork-shaped plug (23 ) and the fork-shaped plug (24) connected to the current line at the terminal of the terminal clamp, the fork-shaped plug (23) connected to the voltage line at the terminal of the terminal clamp and the fork-shaped plug (24) connected to the current line at the terminal of the terminal clamp are respectively connected to the fixing bolts (6) of the test leads ; The other end of the multi-purpose test wire (18) is respectively connected to a voltage wire (16) connected to the test equipment terminal and a current wire (17) connected to the test equipment terminal; Connect the other end of the test equipment terminal voltage wire (16) to the test equipment terminal voltage cylindrical wire plug (12), and the test equipment terminal voltage cylindrical wire plug (12) is connected to the test equipment terminal voltage cylindrical wire plug (12) through an insulating rubber rope. spare fork plug (13); The other end of the current wire (17) connected to the test equipment end is connected to the cylindrical plug (14) connected to the current wire of the test equipment end. cord spare fork plug (15); Plug (12) for connecting the voltage cylindrical line at the test equipment end, a spare fork-shaped plug for connecting the voltage line at the test equipment end (13), a cylindrical plug for connecting the current line at the test equipment end (14), and a spare fork-shaped plug for connecting the current line at the test equipment end (15) are all connected to the test equipment side. 3. The large-scale transformer test multi-purpose wire connection device according to claim 1 or 2, characterized in that: the multi-purpose test wire (18) is provided in turn on the outside of the core (19): an insulating layer (20 ), the shielding layer (21) and the outer insulating layer (22). 4. The large-scale transformer test multi-purpose wire connection device according to claim 1, characterized in that: the conductive contact plate (1) of the connection clip is a flat structure, and the openings of the two contact plates are V-shaped openings; the connection clip The lower contraction spring fixing bolt knob (7) and the upper contraction spring fixing bolt knob (9) of the clamp are all fixedly connected to the contraction springs (27), and the four contraction springs (27) are all fixed between the two contact plates by screw rods. 5. The large-scale transformer test multi-purpose wire connection device according to claim 1, characterized in that: the connecting inverted rod (3) is provided with a bayonet (4), and the bayonet (4) is a cylindrical structure. 6. The large-scale transformer test multi-purpose wire connection device according to claim 1, characterized in that: said conductive short wires (5) are two, respectively arranged on both sides of the connecting plate (2), and respectively connected to the two The conductive contact plate (1) of the block terminal clip is connected. 7. The large-scale transformer test multi-purpose wire wiring device according to claim 1, characterized in that: the conductive contact plate (1) of the wiring clip is made of copper material, the connecting plate (2) and the connecting inverted rod (3 ) is made of aluminum alloy material.

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