CN213023335U

CN213023335U - Transformer direct current resistance tester

Info

Publication number: CN213023335U
Application number: CN202021338371.8U
Authority: CN
Inventors: 严力; 张苏; 龙慧
Original assignee: Wuhan Intelligent Power Technology Co ltd
Current assignee: Wuhan Intelligent Power Technology Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-04-20
Anticipated expiration: 2030-07-09

Abstract

The utility model discloses a transformer direct current resistance tester, concretely relates to transformer technical field, including the instrument shelter, the inside heat dissipation mechanism that is provided with of instrument shelter, heat dissipation mechanism is including setting up two air intakes at instrument shelter one side outer wall, and two air intake bilateral symmetry set up, the inboard of air intake all is provided with the dust screen, dust screen one side all is provided with the fan, fan one side is provided with a plurality of fin, fin one side is provided with the conducting strip, conducting strip one side fixedly connected with fixed plate, fixed plate one side is connected with a plurality of heat conduction strips, the instrument shelter outer wall is close to hinge one side and has seted up the vent, the filter screen is installed to the vent inboard, filter screen and vent fixed connection. The utility model discloses make the tester can well function under any environment, especially under high temperature weather, effectively ensured the safe in utilization of tester, avoided the overheated damage tester of inside electronic component.

Description

Transformer direct current resistance tester

Technical Field

The utility model relates to a transformer technical field, more specifically say, the utility model relates to a transformer direct current resistance tester.

Background

At present, in a power system, a transformer is used as important transformation equipment, whether the transformer is newly delivered or in operation, direct current resistance test is carried out according to the requirements of regulations, and a transformer direct current resistance tester is a novel instrument designed by applying the modern electronic technology and has the characteristics of simplicity and convenience in operation, wide measurement range, stable and accurate test data, perfect counter potential protection function, strong anti-interference capability and the like.

However, in practical use, some transformer direct current resistance testers lack heat dissipation parts in the operation process, and internal elements are damaged due to overheating when the testers are used for a long time in high-temperature weather, so that the development of test work is influenced, the test efficiency is reduced, and the personal safety of operators can be seriously threatened.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a transformer direct current resistance tester is through being provided with heat dissipation mechanism in the instrument shelter inside for the tester can be well function under any environment, especially under high temperature weather, has effectively ensured the safe in utilization of tester, has avoided the overheated damage tester of inside electronic component, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a transformer direct-current resistance tester comprises an instrument box, wherein a box cover is arranged at the top of the instrument box, two hinges are arranged at the joint of the box cover and the instrument box, protective cotton is arranged inside the box cover, four corners of the instrument box and the box cover are respectively provided with a damping block, the surface of each damping block is provided with a rubber pad, and a heat dissipation mechanism is arranged inside the instrument box;

the utility model discloses a heat dissipation mechanism, including setting up two air intakes at instrument shelter one side outer wall, two air intake bilateral symmetry set up, the inboard of air intake all is provided with the dust screen, dust screen one side all is provided with the fan, fan one side is provided with a plurality of fin, fin one side is provided with the conducting strip, the conducting strip passes through welded fixed connection with the fin, conducting strip one side fixedly connected with fixed plate, fixed plate one side is connected with a plurality of heat conduction strips, the instrument shelter outer wall is close to hinge one side and has seted up the vent, the filter screen is installed to the vent inboard, filter screen and vent fixed connection.

In a preferred embodiment, a thermometer is arranged in the middle of the protective cotton inside the case cover, a temperature display screen is arranged on the top of the case cover, and the temperature display screen is embedded in the inner wall of the top of the case cover and is connected with the thermometer through a lead.

In a preferred embodiment, the fan is fixedly connected to the heat-conducting fins along the gaps between the heat-radiating fins by screws, and the fan is located near the end of each heat-radiating fin, and the heat-conducting strip is a member made of copper.

In a preferred embodiment, the shock-absorbing block is fixedly connected with the instrument box and the box cover through screws, and the rubber pad is a member made of a silica gel material.

In a preferred embodiment, an operation table is arranged inside the instrument box, and one side of the operation table is provided with a wire placing grid.

In a preferred embodiment, the edge of the instrument box and the edge of the box cover are provided with two buckles, the buckle positioning piece is arranged on the edge of the instrument box, and the buckle fastening piece is arranged on the edge of the box cover.

In a preferred embodiment, a side wall of the instrument box is provided with a handle.

The utility model discloses a technological effect and advantage:

1. compared with the prior art, the heat dissipation mechanism is arranged in the instrument box, when the tester runs, two fans of the heat dissipation mechanism rotate to enable wind power to blow into the heat dissipation fins, a plurality of heat dissipation fins are distributed in parallel, intervals are arranged among the heat dissipation fins, air in gaps can carry heat generated by electronic components through flowing, the areas and spaces for air circulation can be maximized in a parallel mode among the heat dissipation fins, the heat generated by the electronic components is transmitted to the heat conduction fins through the heat conduction strips, the heat dissipation fins are vertically connected with the heat conduction fins, the heat is dispersed to each heat dissipation fin through the heat conduction fins, in order to enable the heat dissipation efficiency of the electronic components to be maximum, the two fans run simultaneously, so that the air on the surfaces of the heat dissipation fins can flow to the maximum degree, the heat dissipation efficiency of the heat dissipation fins is improved, and the tester can run, particularly, the use safety of the tester is effectively guaranteed in high-temperature weather;

2. compared with the prior art, all be provided with the snubber block through instrument case and case lid four corners, paste the cushion on the snubber block, effectively reduce the instrument case wholly when meetting to fall or collide, the inside electronic component of box that causes damages, and the cushion can be changed according to the loss degree for the staff takes the tester to any place and uses, all need not worry that inside instrument can fall or collide because of the accident and cause the damage.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the back structure of the present invention.

Fig. 3 is a schematic structural view of the heat dissipation mechanism of the present invention.

Fig. 4 is a schematic view of the vent structure of the present invention.

FIG. 5 is a schematic view of the air inlet structure of the present invention

Fig. 6 is an exploded view of the shock-absorbing block and the rubber cushion of the present invention.

The reference signs are: 1. an instrument box; 2. a box cover; 3. a hinge; 4. protective cotton; 5. a damper block; 6. a rubber pad; 7. an air inlet; 8. a dust screen; 9. a fan; 10. a heat sink; 11. a heat conductive sheet; 12. a fixing plate; 13. a heat conducting strip; 14. a vent; 15. filtering with a screen; 16. a thermometer; 17. a temperature display screen; 18. an operation table; 19. a wire placing grid; 20. buckling; 21. a handle.

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.

The transformer direct-current resistance tester shown in the attached figures 1-6 comprises an instrument box 1, wherein a box cover 2 is arranged at the top of the instrument box 1, two hinges 3 are arranged at the joint of the box cover 2 and the instrument box 1, protective cotton 4 is arranged inside the box cover 2, four corners of the instrument box 1 and the box cover 2 are respectively provided with a shock absorption block 5, the surface of each shock absorption block 5 is provided with a rubber pad 6, and a heat dissipation mechanism is arranged inside the instrument box 1;

heat dissipation mechanism is including setting up two air intakes 7 at 1 one side outer wall of instrument shelter, 7 bilateral symmetry of two air intakes sets up, the inboard of air intake 7 all is provided with dust screen 8, dust screen 8 one side all is provided with fan 9, fan 9 one side is provided with a plurality of fin 10, fin 10 one side is provided with conducting strip 11, conducting strip 11 passes through welded fastening with fin 10 and is connected, 11 one side fixedly connected with fixed plate 12 of conducting strip, fixed plate 12 one side is connected with a plurality of

heat conduction strip

13, 1 outer wall of instrument shelter is close to hinge 3 one side and has been seted up vent 14, filter screen 15 is installed to 14 inboards of vent,

filter screen

15 and 14 fixed connection.

Further, 2 inside protective cotton 4 middle parts that lie in of case lid are provided with

thermometer

16, and 2 tops of case lid are provided with temperature display screen 17, and temperature display screen 17 is embedded with 2 top inner walls of case lid, and passes through the wire with thermometer 16 and be connected to detect the inside temperature of box constantly.

Further, the fan 9 is fixedly connected with the heat conducting fins 11 along the gaps between the radiating fins 10 through screws, the fan 9 is close to the end portion of each radiating fin 10, and the heat conducting strips 13 are copper members, so that the radiating performance is improved better, and the radiating area of the radiating fins 10 cannot be occupied due to the installation position.

Further, snubber block 5 all passes through screw fixed connection with instrument case 1, case lid 2, and cushion 6 is the component of a silica gel material, presses close to ground more easily for making cushion 6, can not rock when making instrument case 1 whole operation, and protection instrument case 1 causes the damage because of accidental collision.

Further, the inside operation panel 18 that is provided with of instrument case 1, the electric wire placing grid 19 has been seted up to operation panel 18 one side, and it is more convenient in order to make the tester operation when moving, does not occupy too much and places the container.

Further, two buckles 20 are installed at 1 edge of instrument case and 2 edges of case lid, and buckle 20 setting element sets up at 1 edge of instrument case, and buckle 20 fastener sets up at 2 edges of case lid to when carrying, make more firm of lock between instrument case 1 and the case lid 2 for instrument case 1.

Furthermore, a handle 21 is arranged on one side wall of the instrument box 1, so that the instrument box is convenient for workers to carry.

The utility model discloses the theory of operation: when the utility model is used, firstly, a heat dissipation mechanism is arranged in the instrument box 1, the heat dissipation mechanism can realize air cooling heat dissipation in the instrument box 1 through two air inlets 7, the dustproof net 8 on the air inlets 7 can effectively filter out external particle dust, when the tester runs, two fans 9 in the heat dissipation mechanism can rotate to blow wind power into the heat dissipation fins 10, a plurality of heat dissipation fins 10 are distributed in parallel, intervals are arranged among the heat dissipation fins 10, air in the gaps can carry heat generated by electronic components through flowing, the area and space for air circulation can be maximally enhanced between the heat dissipation fins 10 in a parallel mode, heat generated by the electronic components is transmitted to the heat conduction fins 11 through the heat conduction strips 13, because the heat dissipation fins 10 are vertically connected with the heat conduction fins 11, the heat is dispersed to each heat dissipation fin 10 by the heat conduction fins 11, in order to maximize the heat dissipation efficiency of the electronic components, the two fans 9 operate simultaneously, so that air on the surface of the radiating fin 10 can flow to the greatest extent, the radiating efficiency of the radiating fin is improved, a vent 14 is arranged at the back of the instrument box 1, a filter screen 15 on the vent 14 can effectively filter out external dust, the shock absorption blocks 5 are arranged at four corners of the instrument box 1 and the box cover 2, the rubber pads 6 are adhered on the shock absorption blocks 5, the damage of electronic elements in the box body caused by falling or collision of the whole instrument box 1 is effectively reduced, the rubber pads 6 can be replaced according to the loss degree, finally, the thermometer 16 is arranged in the box cover 2, the temperature display screen 17 at the top of the box cover 2 can constantly detect the temperature in the box body, the safety of the instrument is effectively improved, the setting of a radiating mechanism can ensure that the tester can operate well in any environment, particularly under high-temperature weather, the use safety of the tester is effectively guaranteed, the tester is prevented from being damaged by overheating of internal electronic elements.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a transformer direct current resistance tester, includes instrument case (1), its characterized in that: the instrument box comprises an instrument box body (1), a box cover (2) is arranged at the top of the instrument box body (1), two hinges (3) are arranged at the joint of the box cover (2) and the instrument box body (1), protective cotton (4) is arranged inside the box cover (2), four corners of the instrument box body (1) and the box cover (2) are respectively provided with a damping block (5), a rubber pad (6) is arranged on the surface of each damping block (5), and a heat dissipation mechanism is arranged inside the instrument box body (1);

the heat dissipation mechanism comprises two air inlets (7) arranged on the outer wall of one side of the instrument box (1), the two air inlets (7) are arranged in bilateral symmetry, the inner sides of the air inlets (7) are provided with dust screens (8), one sides of the dust screens (8) are provided with fans (9), a plurality of radiating fins (10) are arranged on one side of the fan (9), heat-conducting fins (11) are arranged on one side of the radiating fins (10), the heat conducting fin (11) is fixedly connected with the radiating fin (10) through welding, one side of the heat conducting fin (11) is fixedly connected with a fixing plate (12), one side of the fixed plate (12) is connected with a plurality of heat conduction strips (13), one side of the outer wall of the instrument box (1) close to the hinge (3) is provided with a ventilation opening (14), a filter screen (15) is installed on the inner side of the ventilation opening (14), and the filter screen (15) is fixedly connected with the ventilation opening (14).

2. The transformer direct current resistance tester of claim 1, wherein: the inner portion of the box cover (2) is located in the middle of the protective cotton (4) and is provided with a thermometer (16), the top of the box cover (2) is provided with a temperature display screen (17), and the temperature display screen (17) is embedded into the inner wall of the top of the box cover (2) and is connected with the thermometer (16) through a conducting wire.

3. The transformer direct current resistance tester of claim 1, wherein: fan (9) pass through the gap and the conducting strip (11) fixed connection between screw edge fin (10), and fan (9) press close to the tip of every fin (10), conducting strip (13) are the component of a copper material.

4. The transformer direct current resistance tester of claim 1, wherein: the shock absorption block (5) is fixedly connected with the instrument box (1) and the box cover (2) through screws, and the rubber pad (6) is made of a silica gel material.

5. The transformer direct current resistance tester of claim 1, wherein: an operating table (18) is arranged inside the instrument box (1), and an electric wire placing grid (19) is arranged on one side of the operating table (18).

6. The transformer direct current resistance tester of claim 1, wherein: two buckles (20) are installed at instrument case (1) edge and case lid (2) edge, buckle (20) setting element sets up at instrument case (1) edge, buckle (20) fastener sets up at case lid (2) edge.

7. The transformer direct current resistance tester of claim 1, wherein: a handle (21) is arranged on one side wall of the instrument box (1).