CN219369878U

CN219369878U - Direct current resistance testing device

Info

Publication number: CN219369878U
Application number: CN202223498997.7U
Authority: CN
Inventors: 喻权; 杨道立; 任康; 杨胜辉
Original assignee: Guizhou Changzheng Transmission And Distribution Electric Co ltd
Current assignee: Guizhou Changzheng Transmission And Distribution Electric Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-07-18
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to the technical field of detection devices, in particular to a direct-current resistance testing device, which comprises a box body, wherein a testing host is arranged on the inner side of the box body, a storage groove is formed in the box body, and a winding assembly is arranged in the storage groove; the winding assembly comprises a fixed disc and a winding roll, wherein a detection line is wound on the outer side of the winding roll, a conductive assembly is arranged between the fixed disc and the winding roll, a test plug on an electrode column is used for being connected with a test host, a test connector connected with the detection line of the winding roll is used for being connected with external equipment to be tested, the winding roll can be separated and taken out through the design of the conductive sheet and the electrode column, so that switching of multiple operation modes is facilitated, and the winding detection line is conveniently overhauled after the winding roll is taken out, so that the operability is high, and the convenience maintenance and applicability of the whole equipment are greatly improved.

Description

Direct current resistance testing device

Technical Field

The utility model relates to the technical field of detection devices, in particular to a direct current resistance testing device.

Background

The direct current resistance test of the transformer winding is an indispensable test item for the transformer after the switching, overhaul and change of the tap changer. In general, measuring the dc resistance of transformer windings and high power inductive devices by conventional methods (bridge and drop) is a time consuming and labor intensive task. In order to change such a situation, a transformer direct current resistance tester has been developed to shorten the measurement time and reduce the workload of the tester.

The utility model discloses a transformer direct current resistance tester, which comprises a protection box, wherein a test host is fixedly connected in the protection box, a detection line is connected to the test host, a take-up pulley is rotationally connected to the protection box, the detection line is wound on the take-up pulley, and a driving component for driving the take-up pulley to rotate is arranged on the protection box.

Although be provided with wire winding mechanism in this technical scheme, it adopts the fixed pivoted design mode of take-up reel, firstly is difficult to realize taking out the take-up reel and carry out convenient maintenance to its outside detection line, and secondly it does not set up one-way unwrapping wire structure, so the synchronous rolling in detection line both ends has increased unnecessary detection line demand when the unwrapping wire.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a direct current resistance testing device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the direct current resistance testing device comprises a box body, wherein a testing host is arranged on the inner side of the box body, a storage groove is formed in the box body, and a winding assembly is arranged in the storage groove;

the winding assembly comprises a fixed disc and a winding roll, wherein a detection line is wound on the outer side of the winding roll, a conductive assembly is arranged between the fixed disc and the winding roll, a supporting frame is detachably connected to the inner side of the storage groove, the supporting frame is rotatably connected with the winding roll, and a locking piece for locking the position of the winding roll is arranged on the supporting frame.

Further, the conductive assembly comprises two electrode columns arranged at the top of the fixed disc and used for being connected with a test plug, two groups of ring grooves are further formed in the bottom of the winding disc, conductive sheets are arranged in the ring grooves, and the electrode columns are in contact with the conductive sheets to realize electrical conduction.

Further, the support frame is U type structure, has all seted up the locating hole on the both ends of buckling of support frame, embedded spring pin subassembly on the inboard of box, the round pin axle head of spring pin subassembly can with the looks joint of locating hole.

Further, a guide shaft is fixedly arranged at the top of the winding roll, the guide shaft penetrates through the supporting frame, two groups of limiting pieces are arranged on the outer peripheral surface of the guide shaft at intervals, and the two groups of limiting pieces are clamped on two sides of the supporting frame.

Further, the locking piece includes fixed mounting with fixing base on the support frame, peg graft through the spring on the fixing base has the inserted bar, the outside circumference of guide shaft distributes has the tooth's socket, the tip of inserted bar can with tooth's socket looks joint.

Furthermore, a threading opening is formed in the bottom of the box body, a sealing plug is movably inserted into the threading opening, and the sealing plug is connected with the box body through a connecting rope.

The direct current resistance testing device provided by the utility model has the beneficial effects that: according to the utility model, the test plug on the electrode column is used for connecting a test host, the test connector connected with the detection line of the winding roll is used for connecting an external device to be tested, and through the design of the conducting strip and the electrode column, the winding roll can be separated and taken out, so that the switching of various operation modes is facilitated, and the detection line wound by the winding roll is conveniently overhauled after the winding roll is taken out, so that the operability is higher, and the convenience maintenance and applicability of the whole device are greatly improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged schematic view of the area A of FIG. 1;

FIG. 3 is a schematic diagram of a conductive component according to the present utility model;

fig. 4 is a schematic view of the structure of the conductive sheet of the present utility model.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the box 1, the storing groove 11, the spring pin assembly 12, the sealing plug 13, the test host 2, the winding assembly 3, the fixed disc 31, the winding roll 32, the guide shaft 321, the limiting piece 322, the conductive assembly 33, the conductive piece 331, the supporting frame 34, the positioning hole 341, the locking piece 35, the spring 351, the inserting rod 352 and the tooth groove 353.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 4, a direct current resistance testing device comprises a box body 1, wherein a testing host 2 is installed on the inner side of the box body 1, a storage groove 11 is formed in the box body 1, and a winding assembly 3 is installed in the storage groove 11;

the winding assembly 3 comprises a fixed disc 31 and a winding roll 32, a detection line is wound on the outer side of the winding roll 32, a conductive assembly 33 is arranged between the fixed disc 31 and the winding roll 32, a supporting frame 34 is detachably connected to the inner side of the storage groove 11, the supporting frame 34 is rotatably connected with the winding roll 32, and a locking piece 35 used for locking the position of the winding roll 32 is arranged on the supporting frame 34.

Furthermore, in the present utility model, the conductive component 33 includes two electrode columns mounted on the top of the fixed disk 31, the two electrode columns are used for connecting with a test plug, two groups of ring grooves are further opened at the bottom of the winding roll 32, conductive sheets 331 are disposed in the ring grooves, the electrode columns are in contact with the conductive sheets 331 to realize electrical conduction, specifically, the test plug on the electrode column is used for connecting with the test host 2, and the test connector connected with the test line of the winding roll 32 is used for connecting with an external device to be tested, through the design of the conductive sheets 331 and the electrode columns, the winding roll 32 can be separated and taken out, so as to facilitate the switching of multiple operation modes, and the convenient maintenance of the winding test line after the winding roll 32 is taken out, so that the operability is strong, and the convenience maintenance and applicability of the whole device are greatly improved.

Still further, in the present utility model, the supporting frame 34 has a U-shaped structure, positioning holes 341 are formed on both bending ends of the supporting frame 34, a spring pin assembly 12 is embedded on the inner side of the case 1, and the pin end of the spring pin assembly 12 can be clamped with the positioning holes 341.

Specifically, when the reel 32 needs to be removed, the spring pin assembly 12 is simply pressed to separate from the positioning hole 341 on the support 34, and thereafter the support 34 is taken out together with the whole reel 32.

In more detail, the winding roll 32 and the supporting frame 34 are realized by the following structure in the present embodiment;

the guide shaft 321 is fixedly installed at the top of the winding roll 32, the guide shaft 321 is penetrated with the supporting frame 34, two groups of limiting pieces 322 are arranged on the outer peripheral surface of the guide shaft 321 at intervals, the two groups of limiting pieces 322 are clamped on two sides of the supporting frame 34, the limiting pieces 322 are used for limiting the vertical movement of the guide shaft 321 in the embodiment, and particularly, in other embodiments, the limiting pieces 322 can be designed into bolts in threaded connection, so that the supporting frame 34 can be separated from the guide shaft 321 when the bolts are detached.

In more detail, the locking member 35 comprises a fixed seat fixedly mounted on the supporting frame 34, a plug rod 352 is inserted into the fixed seat through a spring 351, tooth grooves 353 are distributed on the outer circumference of the guide shaft 321, and the end portion of the plug rod 352 can be clamped with the tooth grooves 353.

When the wire on the winding roll 32 is required to be pulled out, the test plug is pulled out, all the detection lines are stored after the test is completed, and the sealing plug 13 is plugged.

The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. The utility model provides a direct current resistance testing arrangement, includes box (1), test host computer (2) are installed to the inboard of box (1), its characterized in that: a storage groove (11) is formed in the box body (1), and a winding assembly (3) is arranged in the storage groove (11);

the winding assembly (3) comprises a fixed disc (31) and a winding roll (32), a detection line is wound on the outer side of the winding roll (32), a conductive assembly (33) is arranged between the fixed disc (31) and the winding roll (32), a supporting frame (34) is detachably connected to the inner side of the storage groove (11), the supporting frame (34) is rotatably connected with the winding roll (32), and a locking piece (35) used for locking the position of the winding roll (32) is arranged on the supporting frame (34).

2. The direct current resistance testing device according to claim 1, wherein: the conductive assembly (33) comprises two electrode columns arranged at the top of the fixed disc (31), the two electrode columns are used for being connected with a test plug, two groups of ring grooves are further formed in the bottom of the winding disc (32), conductive sheets (331) are arranged in the ring grooves, and the electrode columns are in contact with the conductive sheets (331) to realize electrical conduction.

3. The direct current resistance testing device according to claim 1, wherein: the support frame (34) is of a U-shaped structure, positioning holes (341) are formed in two bending ends of the support frame (34), a spring pin assembly (12) is embedded in the inner side of the box body (1), and the pin shaft end of the spring pin assembly (12) can be clamped with the positioning holes (341).

4. A direct current resistance testing device according to claim 3, wherein: guide shafts (321) are fixedly arranged at the tops of the winding rolls (32), the guide shafts (321) are penetrated with the supporting frames (34), two groups of limiting pieces (322) are arranged on the outer peripheral surfaces of the guide shafts (321) at intervals, and the two groups of limiting pieces (322) are clamped on two sides of the supporting frames (34).

5. The direct current resistance testing device according to claim 4, wherein: the locking piece (35) comprises a fixed seat fixedly mounted on the supporting frame (34), a plug rod (352) is inserted into the fixed seat through a spring (351), tooth grooves (353) are distributed on the outer circumference of the guide shaft (321), and the end portion of the plug rod (352) can be clamped with the tooth grooves (353).

6. The direct current resistance testing device according to claim 1, wherein: the bottom of the box body (1) is provided with a threading opening, a sealing plug (13) is movably inserted into the threading opening, and the sealing plug (13) is connected with the box body (1) through a connecting rope.