CN212060499U

CN212060499U - Testing device for contact resistance value of on-load tap-changer of transformer

Info

Publication number: CN212060499U
Application number: CN202020584868.1U
Authority: CN
Inventors: 张亚平
Original assignee: Suzhou Geleige Dynamo Electric Equipment Co ltd
Current assignee: Suzhou Geleige Dynamo Electric Equipment Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-12-01
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a testing device for the contact resistance value of an on-load tap-changer of a transformer, which comprises an upper box body, a plurality of hollow rods are fixedly connected inside the upper box body through bearings, test wires are arranged on the surfaces of the hollow rods, a motor is fixedly connected with one side of the interior of the upper box body, which is far away from the hollow rod, a first placing box is arranged on the surface of the upper box body, the first placing box is internally provided with an illuminating lamp, the surface of the upper box body and the left side of the first placing box are provided with a thermometer, a hygrometer is arranged on the surface of the upper box body and positioned at the right side of the first placing box, a motion box is arranged on the surface of the upper box body and positioned below the first placing box, the surface of motion case has seted up the mounting groove, the surface of going up the box and being located the both sides of motion case are provided with the second and lay the case, the lateral wall of going up the box rotates through the pivot to be connected with down the box. The utility model discloses, the device conveniently carries, easy operation, and the protectiveness is strong.

Description

Testing device for contact resistance value of on-load tap-changer of transformer

Technical Field

The utility model relates to a testing arrangement field especially relates to a transformer has testing arrangement for on-load tap-changer contact resistance.

Background

An on-load tap changer refers to a voltage regulating device adapted to operate under transformer load for changing the tap connection position of a transformer winding.

When the on-load tap-changer works, two taps are necessarily connected at the same time at a certain moment in the process of switching the taps to ensure the continuity of load current, and the two connected taps are necessarily connected in series with an anti-resistance to limit circulating current, wherein the anti-resistance is called an over-resistance, and in order to ensure the normal operation of a transformer, the over-resistance needs to be tested frequently to ensure the safe operation of the transformer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the testing arrangement for transformer on-load tap-changer contact resistance that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a testing device for the contact resistance value of an on-load tap-changer of a transformer comprises an upper box body, wherein a plurality of hollow rods are fixedly connected inside the upper box body through bearings, the surface of the hollow rod is provided with a test wire, one side of the interior of the upper box body, which is far away from the hollow rod, is fixedly connected with a motor, the surface of the upper box body is provided with a first placing box, the interior of the first placing box is provided with a lighting lamp, a thermometer is arranged on the surface of the upper box body and on the left side of the first placing box, a hygrometer is arranged on the surface of the upper box body and on the right side of the first placing box, a moving box is arranged on the surface of the upper box body and below the first placing box, a placing groove is arranged on the surface of the moving box, the surface of the upper box body and two sides of the motion box are provided with second placing boxes, and the side wall of the upper box body is rotatably connected with a lower box body through a rotating shaft.

As a further description of the above technical solution:

the inside of box is provided with the foam-rubber cushion down, the upper surface of box is provided with the test panel down, the surface of test panel from left to right is provided with display screen, control button, test input, test output, master switch and information exchange interface, the bottom fixedly connected with singlechip of test panel, the singlechip has the constant current source through electric wire electric connection.

As a further description of the above technical solution:

the surface of the hollow rod is provided with a through hole, and the two ends of the test wire are respectively provided with a connecting end and a contact end.

As a further description of the above technical solution:

the surface fixed connection of hollow pole has first gear, the output fixedly connected with second gear of motor, the surface of first gear and second gear is provided with the hold-in range.

As a further description of the above technical solution:

the lateral wall of the lower box body is provided with a handle, and the upper box body is fixedly connected with the lower box body through a plurality of buckles.

As a further description of the above technical solution:

the surface of going up the box is provided with a plurality of first guard frames, the surface of box is provided with a plurality of second guard frames down.

As a further description of the above technical solution:

a plurality of fans are arranged on the side wall of the lower box body and on one side far away from the handle, and dust covers are arranged on the surfaces of the fans.

The utility model discloses following beneficial effect has:

1. compared with the prior art, this transformer on-load tap-changer testing arrangement for contact resistance is provided with a plurality of hollow poles in the last box, and the surface of hollow pole is provided with the test wire, the test wire when using only need outwards stretch can, the lateral wall of box is provided with the handle under, device easy operation conveniently carries.

2. Compared with the prior art, this transformer on-load tap-changer testing arrangement for contact resistance is provided with thermometer and hygrometer at last box, is the same as showing ambient temperature and humidity to whether the operator judges the test accurate, be provided with first protection frame on the surface of last box, be provided with second protection frame on the surface of box down, protection device, the inside of box is provided with the foam-rubber cushion down, the inside work element of box under the protection when the collision, and the device protectiveness is strong.

Drawings

Fig. 1 is a front view of an internal structure of a testing device for a contact resistance value of an on-load tap-changer of a transformer according to the present invention;

fig. 2 is a front view of an upper case of the testing device for contact resistance of the on-load tap-changer of the transformer according to the present invention;

fig. 3 is a front view of the testing device for contact resistance of the on-load tap-changer of the transformer according to the present invention;

fig. 4 is a front view of a testing panel of the testing device for the contact resistance value of the on-load tap-changer of the transformer according to the present invention;

fig. 5 is a partial enlarged view of a position a in fig. 1 of the testing device for the contact resistance value of the on-load tap-changer of the transformer according to the present invention.

Illustration of the drawings:

1. an upper box body; 2. a hollow shaft; 3. testing the electric wire; 4. a motor; 5. a first placing box; 6. an illuminating lamp; 7. a thermometer; 8. a humidity meter; 9. a motion box; 10. a placing groove; 11. a second placing box; 12. a lower box body; 13. a sponge cushion; 14. testing the panel; 15. a display screen; 16. a control key; 17. testing the input end; 18. testing the output end; 19. a master switch; 20. an information exchange interface; 21. a single chip microcomputer; 22. a constant current source; 23. a through hole; 24. a connecting end; 25. a contact end; 26. a first gear; 27. a second gear; 28. a synchronous belt; 29. a grip; 30. locking; 31. a first protective bezel; 32. a second protective bezel; 33. a fan; 34. a dust cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, the utility model provides a pair of transformer on-load tap-changer contact resistance testing arrangement for resistance: comprises an upper box body 1, a plurality of hollow rods 2 are fixedly connected inside the upper box body 1 through bearings, test wires 3 are arranged on the surfaces of the hollow rods 2, a motor 4 is fixedly connected inside the upper box body 1 and on one side far away from the hollow rods 2, a first placing box 5 is arranged on the surface of the upper box body 1, an illuminating lamp 6 is arranged inside the first placing box 5 and provides a light source for a working environment, a thermometer 7 is arranged on the surface of the upper box body 1 and on the left side of the first placing box 5 and displays the ambient temperature, a hygrometer 8 is arranged on the surface of the upper box body 1 and on the right side of the first placing box 5 and displays the ambient humidity, a motion box 9 is arranged on the surface of the upper box body 1 and below the first placing box 5, a placing groove 10 is formed in the surface of the motion box 9 and used for placing a connecting end 24, and second placing boxes 11 are arranged on the surface of the upper box body 1 and on, the side wall of the upper box body 1 is rotatably connected with a lower box body 12 through a rotating shaft and is used for placing a contact end 25.

The inside of the lower box body 12 is provided with a sponge cushion 13 for absorbing shock and protecting electronic elements inside the lower box body 12, the upper surface of the lower box body 12 is provided with a test panel 14, the surface of the test panel 14 is provided with a display screen 15 from left to right and displays test data, a control key 16 and internal elements of a control device work, a test input end 17, a test output end 18 are electrically connected with a connecting end 24, a master switch 19 and an information exchange interface 20, the master switch 19 controls the device to start and stop, the information exchange interface 20 is used for connecting with other equipment to share information, the bottom of the test panel 14 is fixedly connected with a single chip 21 which has comprehensive processing capacity, the single chip 21 is electrically connected with a constant current source 22 through a wire, the constant current source 22 is used for testing a resistor, the surface of the hollow rod 2 is provided with a through hole 23 for the connecting end 24 to, the contact end 25 is in contact with a resistor to be tested, the surface of the hollow rod 2 is fixedly connected with a first gear 26, the output end of the motor 4 is fixedly connected with a second gear 27, synchronous belts 28 are arranged on the surfaces of the first gear 26 and the second gear 27, the motor 4 controls the hollow rod 2 to rotate, a handle 29 is arranged on the side wall of the lower box body 12, the carrying device is convenient, the upper box body 1 is fixedly connected with the lower box body 12 through a plurality of buckles 30, a plurality of first protective frames 31 are arranged on the surface of the upper box body 1, a plurality of second protective frames 32 are arranged on the surface of the lower box body 12, a plurality of fans 33 are arranged on the side wall of the lower box body 12 far away from the handle 29, the fans are used for dissipating heat of working elements in the lower box body 12, and dust covers 34 are arranged.

The working principle is as follows: the testing wire 3 is preset on the surface of the hollow rod 2, the connecting end 24 penetrates into the hollow rod 2 through the through hole 23, a distance is reserved for the electrical connection of the connecting end 24 with the testing output end 17 and the testing input end 18, the motor 4 is started, the output end of the motor 4 drives the first gear 26 to rotate, the synchronous belt 28 is arranged on the surfaces of the first gear 26 and the second gear 27, the hollow rod 2 rotates, the testing wire 3 is collected on the surface of the hollow rod 2, the contact end 25 of the testing wire 3 is placed in the second placing box 11, when testing is carried out, the contact end 25 is held by hand to be pulled outwards to obtain the testing wire 3 with enough length, then the connecting end 24 is inserted into the testing output end 17 and the testing input end 18, the contact end 25 is connected with a resistor to be tested, data is obtained on the display screen 15, the data can be transmitted to other equipment through the information exchange interface, the motor 4 is started, the hollow rod 2 rotates, and the test wire 3 is recovered.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a transformer on-load tap-changer contact resistance testing arrangement for resistance, includes box (1), its characterized in that: the testing device is characterized in that a plurality of hollow rods (2) are fixedly connected inside the upper box body (1) through bearings, testing wires (3) are arranged on the surface of each hollow rod (2), a motor (4) is fixedly connected inside the upper box body (1) and far away from one side of each hollow rod (2), a first placing box (5) is arranged on the surface of the upper box body (1), an illuminating lamp (6) is arranged inside the first placing box (5), a thermometer (7) is arranged on the surface of the upper box body (1) and on the left side of the first placing box (5), a hygrometer (8) is arranged on the surface of the upper box body (1) and on the right side of the first placing box (5), a motion box (9) is arranged on the surface of the upper box body (1) and below the first placing box (5), and a placing groove (10) is formed in the surface of the motion box (9), the surface of the upper box body (1) and two sides of the motion box (9) are provided with second placing boxes (11), and the side wall of the upper box body (1) is rotatably connected with a lower box body (12) through a rotating shaft.

2. The device for testing the contact resistance value of the on-load tap-changer of the transformer according to claim 1, wherein: the utility model discloses a test box, including lower box (12), the inside of lower box (12) is provided with foam-rubber cushion (13), the upper surface of lower box (12) is provided with test panel (14), the surface of test panel (14) from left to right is provided with display screen (15), control button (16), test input (17), test output (18), master switch (19) and information exchange interface (20), the bottom fixedly connected with singlechip (21) of test panel (14), singlechip (21) have constant current source (22) through electric wire electric connection.

3. The device for testing the contact resistance value of the on-load tap-changer of the transformer according to claim 1, wherein: the surface of the hollow rod (2) is provided with a through hole (23), and two ends of the test wire (3) are respectively provided with a connecting end (24) and a contact end (25).

4. The device for testing the contact resistance value of the on-load tap-changer of the transformer according to claim 1, wherein: the surface fixed connection of hollow rod (2) has first gear (26), the output fixedly connected with second gear (27) of motor (4), the surface of first gear (26) and second gear (27) is provided with hold-in range (28).

5. The device for testing the contact resistance value of the on-load tap-changer of the transformer according to claim 1, wherein: the side wall of the lower box body (12) is provided with a handle (29), and the upper box body (1) is fixedly connected with the lower box body (12) through a plurality of buckles (30).

6. The device for testing the contact resistance value of the on-load tap-changer of the transformer according to claim 1, wherein: the surface of the upper box body (1) is provided with a plurality of first protective frames (31), and the surface of the lower box body (12) is provided with a plurality of second protective frames (32).

7. The device for testing the contact resistance value of the on-load tap-changer of the transformer according to claim 1, wherein: a plurality of fans (33) are arranged on one side of the side wall of the lower box body (12) far away from the handle (29), and dust covers (34) are arranged on the surfaces of the fans (33).