CN212459792U - Experimental termination of multi-functional transformer of 110kV and above transformer suspension type - Google Patents
Experimental termination of multi-functional transformer of 110kV and above transformer suspension type Download PDFInfo
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- CN212459792U CN212459792U CN202021536089.0U CN202021536089U CN212459792U CN 212459792 U CN212459792 U CN 212459792U CN 202021536089 U CN202021536089 U CN 202021536089U CN 212459792 U CN212459792 U CN 212459792U
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Abstract
The utility model relates to an experimental termination of multi-functional transformer of 110kV and above transformer suspension type, include the insulator spindle of the adjustable height who is connected with transformer high-pressure side bushing's test portion and with the test portion, the test portion includes the electric current conducting plate of right opening "Contraband" type and the voltage conducting plate in left opening "Contraband" type and the upper end embedding electric current conducting plate, the upper end of the voltage conducting plate in the embedding electric current conducting plate is wrapped up by the insulating layer, the upper end of electric current conducting plate is equipped with the insulating stiff end with voltage conducting plate rigid coupling and the electric current wiring end that can interconnecting link, voltage conducting plate side is equipped with the voltage wiring end that can interconnecting link, the top of insulator spindle is equipped with in the screw in voltage conducting plate and presss from both sides the compressing tightly portion that can electrically conduct. The utility model provides a need the problem of test personnel's make a round trip to scramble when carrying out the test of transformer electrical property, avoided the accident hidden danger that the high altitude falls.
Description
Technical Field
The utility model relates to an electric preventive test field of transformer, more specifically say, it relates to a 110kV and above experimental termination of multi-functional transformer of transformer suspension type.
Background
At present, the electrical performance test items of the transformer with the voltage class of 110kV and above include direct current resistance, insulation resistance, dielectric loss test and the like, and the test is usually performed by clamping a lead clamp of a test instrument on a high-voltage side sleeve of the transformer, as shown in fig. 1, but the clamping mode has the following problems: 1. the contact area between the test clamp and the high-voltage side sleeve of the transformer is small, so that the problems of large test current and easy heating of the test clamp can be caused, and the test data is inaccurate; 2. the test clamp is easy to fall off due to improper manual operation of the test clamp, and the force points are repeatedly searched by testers, so that the labor intensity of the testers is increased, and the working efficiency is reduced; 3. the voltage test clamp and the current test clamp are easy to slide when contacting with a smooth transformer bushing, and if the positions of the voltage test clamp and the current test clamp are close, inaccurate test data and large deviation can be caused. To a problem of (a). In addition, because transformer high-voltage side sleeve pipe highly reaches more than 3 meters, the tester need take the bucket arm car or climb to the transformer high-voltage side with the help of the cat ladder and correspond the position wiring during the experiment on transformer body, and the climbing sleeve pipe makes the tester have the accident hidden danger that the high altitude falls, and the climbing that makes a round trip consumes a large amount of physical powers of tester, has increased the experimental degree of difficulty and test time. Therefore, the development of a device which completely relieves the experimenter from the work of wiring on the high-voltage side bushing of the transformer by means of auxiliary tools such as a crane or a ladder stand is a problem which needs to be solved by the experimenter in the field at present.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a 110kV reaches experimental termination of multi-functional transformer of above transformer suspension type has solved the problem that needs the trial personnel to make a round trip to scramble when carrying out the test of transformer electrical properties, has avoided the accident hidden danger that the high altitude falls.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a wiring device for testing a suspension type multifunctional transformer of a transformer with 110kV and above comprises a testing part connected with a high-voltage side sleeve of the transformer and an insulating rod connected with the testing part and capable of adjusting height, wherein the testing part comprises a current conducting plate with a right opening of Contraband type and a left opening of Contraband type, the upper end of the current conducting plate is embedded into a voltage conducting plate in the current conducting plate, the upper end of the voltage conducting plate embedded into the current conducting plate is completely wrapped by an insulating layer, the upper end of the current conducting plate is provided with an insulated fixed end fixedly connected with the voltage conducting plate and a current terminal capable of being connected with a test current wire, the side surface of the voltage conducting plate is provided with a voltage terminal capable of being connected with a test voltage wire, the top end of the insulating rod is provided with a conductive pressing part which is screwed into the voltage conducting plate and clamps the high-voltage side sleeve of the transformer, the transformer high-voltage side sleeve is clamped, the contact surfaces of the current conducting plate and the voltage conducting plate and the transformer high-voltage side sleeve are increased, and meanwhile, the insulating layer is arranged between the current conducting plate and the voltage conducting plate, so that the current conducting plate and the voltage conducting plate are effectively insulated and isolated, the test current line and the test voltage line are ensured not to be on the same horizontal plane, and the accuracy of test data is ensured.
In one embodiment, the current conducting plate is a current copper plate, and the voltage conducting plate is a voltage copper plate.
In one embodiment, the compression part comprises a conductive screw rod connected with the insulating rod and screwed into the voltage copper plate and a copper cap positioned at the top of the screw rod and close to the lower end of the current copper plate, the screw rod is screwed into the voltage copper plate by rotating the insulating rod, and the copper cap is close to the lower end of the current copper plate to clamp the high-voltage side sleeve of the transformer.
In one embodiment, a positioning bolt hole is formed in the side face of the copper cap, and a positioning bolt matched with the positioning bolt hole locks the copper cap at the top end of the screw rod to prevent the copper cap from falling off in the use process.
In one embodiment, the insulating rod is formed by connecting a plurality of insulating rod units, and the insulating rod units which can be connected according to the height of the high-voltage side sleeve of the transformer form the insulating rod.
In one of them embodiment, the lower extreme of voltage copper is equipped with but the connection auxiliary rod that the insulator spindle is adjacent is convenient for control the utility model discloses the centre gripping is on transformer high-voltage side sleeve pipe.
In one embodiment, the insulating rod unit is a hollow round rod made of epoxy resin, the length of the hollow round rod is 1.5m, the thickness of a tube wall is 2.5mm, and the diameter of the hollow round rod is phi 40.
In one embodiment, the transverse length of the voltage copper plate is 80mm, the longitudinal length of the voltage copper plate is 100mm, the thickness of the voltage copper plate is 5mm, and the width of the voltage copper plate is 40 mm.
In one embodiment, the transverse length of the current copper plate is 80mm, and the longitudinal length of the current copper plate is 10 mm.
In one embodiment, the thickness of the current copper plate is 5mm, and the width of the copper plate is 40 mm.
The utility model discloses following beneficial effect has:
firstly, the utility model is provided with the current conducting plate and the voltage conducting plate which are mutually embedded, the contact surface between the utility model and the high-voltage side sleeve of the transformer is increased, the heating and even burning of the wire caused by poor contact and overlarge current are avoided, and the insulating layer is arranged between the current conducting plate and the voltage conducting plate, so that the current conducting plate and the voltage conducting plate are effectively insulated and isolated, the test current line and the test voltage line are not on the same horizontal plane, and the accuracy of the test data is ensured;
secondly, the utility model has simple structure, easy installation and convenient carrying, and can select a proper insulating rod according to the height of the high-voltage side sleeve of the transformer;
thirdly, the tester can use the utility model on the ground or on a transformer platform, the operation of the tester by means of an overhead working truck and a herringbone ladder is reduced, the labor intensity and the safety risk of the tester are reduced, the testing time is shortened, and the maintenance efficiency is improved;
fourthly, the testing personnel use the utility model discloses the use of reducible high altitude construction car has reduced the cost of overhaul.
Drawings
FIG. 1 is a schematic diagram of a test clamp clamping a high-voltage side bushing of a transformer;
fig. 2 is a schematic view of the present invention;
FIG. 3 is an enlarged schematic view at A of FIG. 1;
FIG. 4 is a schematic view of the back of FIG. 3;
FIG. 5 is a side schematic view of FIG. 3;
fig. 6 is a schematic view of the insulating rod and the pressing portion of the present invention;
fig. 7 is a schematic diagram of the large transformer test wiring.
In the figure: 1-transformer high-voltage side bushing, 2-test clamp, 21-test voltage wire, 22-test current wire, 3-current copper plate, 31-current terminal, 32-fixed end, 4-voltage copper plate, 41-voltage terminal, 42-insulating layer, 5-insulating rod, 51-screw rod, 52-copper cap and 521-positioning bolt.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.
As shown in fig. 1, in conventional transformer electrical performance test, generally press from both sides 2 centre gripping with the experiment on transformer high-voltage side sleeve pipe 1, experimental voltage line 21 and experimental electric current line 22 are connected with the experimental instrument electricity that corresponds respectively, but this kind of connected mode exists this more defect, need tester to take the bucket arm car or correspond the position wiring with the help of climbing to transformer high-voltage side on transformer body, the climbing sleeve pipe makes tester have the accident potential that the high altitude falls, make a round trip to climb and consume a large amount of physical power of tester, increased experimental degree of difficulty and test time, use the utility model discloses can solve above-mentioned problem.
As shown in fig. 2-7, a wiring device for testing a suspended multifunctional transformer of 110kV and above, comprising a testing part connected with a high-voltage side sleeve 1 of the transformer and an insulating rod 5 with adjustable height connected with the testing part, wherein the insulating rod 5 is formed by connecting a plurality of insulating rod units, the insulating rod 5 is formed by connecting the insulating rod units which can be connected according to the height of the high-voltage side sleeve 1 of the transformer, the testing part comprises a current copper plate 3 with a right opening 'Contraband' and a voltage copper plate 4 with a left opening 'Contraband' and the upper end of which is embedded in the current copper plate 3, the upper end of the voltage copper plate 4 embedded in the current copper plate 3 is completely wrapped by an insulating layer 42, the upper end of the current copper plate 3 is provided with an insulated fixing end 32 fixedly connected with the voltage copper plate 4 and a current terminal 31 which can be connected with a test current wire 22, the side of the voltage copper plate 4 is provided, the top end of the insulating rod 5 is provided with a conductive screw 51 screwed into the voltage copper plate 4 and a copper cap 52 positioned at the top of the screw 51 and close to the lower end of the current copper plate 3, the screw 51 is screwed into the voltage copper plate 4 by rotating the insulating rod 5, and the copper cap 52 is close to the lower end of the current copper plate 3 to clamp the high-voltage side sleeve 1 of the transformer.
Preferably, the side of the copper cap 52 is provided with a positioning pin hole, and the positioning pin 521 matched with the positioning pin hole locks the copper cap 52 at the top end of the screw 51, so as to prevent the copper cap 52 from falling off in the using process.
In this embodiment, the insulating rod unit is a hollow round rod made of epoxy resin, the length is 1.5m, the thickness of the tube wall is 2.5mm, and the diameter is phi 40.
In the present embodiment, the voltage copper plate 4 has a lateral length of 80mm and a longitudinal length of 100mm, and the voltage copper plate 4 has a copper plate thickness of 5mm and a copper plate width of 40 mm.
In the present embodiment, the transverse length of the current copper plate 3 is 80mm, the longitudinal length thereof is 10mm, the thickness of the current copper plate 3 is 5mm, and the width thereof is 40 mm.
Preferably, the lower extreme of voltage copper 4 be equipped with the neighbouring auxiliary rod (the attached drawing does not show) of joinable of insulator spindle 5, be convenient for control the utility model discloses the centre gripping is on transformer high-pressure side sleeve pipe 1.
The utility model discloses an implement the principle:
during the test, a tester connects the voltage wire and the current wire to the voltage terminal 41 on the side of the voltage copper plate 4 and the current terminal 31 on the upper end of the current copper plate 3 respectively, the length of the hollow insulating rod 5 is adjusted to the position of the transformer high-voltage side sleeve 1, the hollow insulating rod 5 is rotated to drive the screw rod 51 to move up and down in the voltage copper plate 4, so that the lower ends of the copper cap 52 and the current copper plate 3 move to firmly clamp the transformer high-voltage side sleeve 1, the voltage terminal 41 and the current terminal 31 are respectively connected with the voltage terminal and the current terminal 31 of the test instrument, the tester can be thoroughly released from the work of carrying out the wiring on the transformer high-voltage side sleeve 1 by auxiliary tools such as a crane or a ladder stand, the contact surfaces of the current copper plate 3 and the voltage copper plate 4 and the transformer high-voltage side sleeve 1 are increased, and the insulating layer 42 is arranged between the current copper, the two are effectively insulated and isolated, the current line and the voltage line are not on the same horizontal plane, and the accuracy of test data is ensured.
The utility model discloses still possess the function of insulation resistance test shorting stub, when will carrying out the insulation resistance test, untie electric current, voltage wire, carry out three-phase (A, B, C) through voltage wiring end 41 with other wires and connect, rotatory hollow insulator spindle 5 drives screw rod 51 about in voltage copper 4 for the lower extreme of copper cap 52 and electric current copper 3 removes and firmly grasps transformer high-voltage side sleeve pipe 1, and the experimenter need not carry out the insulation resistance test with the help of appurtenance such as loop wheel machine or cat ladder.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A wiring device for testing a suspension type multifunctional transformer of a transformer with the voltage of 110kV or more, it is characterized by comprising a testing part connected with a high-voltage side sleeve (1) of the transformer and an insulating rod (5) which is connected with the testing part and can adjust the height, the testing part comprises a current conducting plate with a right opening of 'Contraband' type and a voltage conducting plate with a left opening of 'Contraband' type, the upper end of the voltage conducting plate embedded in the current conducting plate is completely wrapped by an insulating layer (42), the upper end of the current conducting plate is provided with an insulating fixed end (32) fixedly connected with the voltage conducting plate and a current terminal (31) capable of being connected with a test current wire (22), the side of the voltage conducting plate is provided with a voltage terminal (41) which can be connected with a test voltage wire (21), the top end of the insulating rod (5) is provided with a conductive pressing part which is screwed into the voltage conductive plate and clamps the transformer high-voltage side sleeve (1) with the current conductive plate.
2. The test wiring device for 110kV and above transformer-suspended multifunctional transformers, according to claim 1, wherein the current conducting plate is a current copper plate (3) and the voltage conducting plate is a voltage copper plate (4).
3. The test wiring device for the 110kV and above transformer-suspended multifunctional transformer according to claim 2, wherein the compression part comprises a conductive screw (51) connected with the insulating rod (5) and screwed into the voltage copper plate (4) and a copper cap (52) positioned on the top of the screw (51) and close to the lower end of the current copper plate (3).
4. The test wiring device for the suspended multifunctional transformer of 110kV and above transformers as claimed in claim 3, wherein a positioning pin hole is formed in the side surface of the copper cap (52), and a positioning pin (521) matched with the positioning pin hole locks the copper cap (52) at the top end of the screw rod (51).
5. 110kV and above transformer-suspended multifunctional transformer test wiring device according to any one of claims 1-4, wherein the insulation rod (5) is formed by connecting a plurality of insulation rod units.
6. The test wiring device for the 110kV and above transformer-suspended multifunctional transformer as claimed in claim 5, wherein the lower end of the voltage copper plate (4) is provided with a connectable auxiliary rod adjacent to the insulating rod (5).
7. The test wiring device for the suspended multifunctional transformer of 110kV and above transformers according to claim 5, wherein the insulation rod units are hollow round rods made of epoxy resin, the length of each hollow round rod is 1.5m, the thickness of a tube wall is 2.5mm, and the diameter of each hollow round rod is phi 40.
8. The test wiring device for the 110kV and above transformer-suspended multifunctional transformer according to claim 2, wherein the transverse length of the voltage copper plate (4) is 80mm, the longitudinal length of the voltage copper plate is 100mm, the thickness of the voltage copper plate (4) is 5mm, and the width of the voltage copper plate is 40 mm.
9. The test wiring device for 110kV and above transformer-suspended multifunctional transformers according to claim 8, wherein the copper current plate (3) has a transverse length of 80mm and a longitudinal length of 10 mm.
10. The test wiring device for 110kV and above transformer-suspended multifunctional transformers according to claim 9, wherein the thickness of the copper plate of the current copper plate (3) is 5mm, and the width of the copper plate is 40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021536089.0U CN212459792U (en) | 2020-07-29 | 2020-07-29 | Experimental termination of multi-functional transformer of 110kV and above transformer suspension type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021536089.0U CN212459792U (en) | 2020-07-29 | 2020-07-29 | Experimental termination of multi-functional transformer of 110kV and above transformer suspension type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212459792U true CN212459792U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021536089.0U Active CN212459792U (en) | 2020-07-29 | 2020-07-29 | Experimental termination of multi-functional transformer of 110kV and above transformer suspension type |
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| Country | Link |
|---|---|
| CN (1) | CN212459792U (en) |
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- 2020-07-29 CN CN202021536089.0U patent/CN212459792U/en active Active
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