CN219031400U

CN219031400U - Transformer load testing device

Info

Publication number: CN219031400U
Application number: CN202223545777.5U
Authority: CN
Inventors: 陆文兴; 汪钢
Original assignee: Changzhou Zhixin Electronic Technology Co ltd
Current assignee: Changzhou Zhixin Electronic Technology Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-16
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a transformer load testing device which comprises a transformer empty load device body, wherein a sealing cover is hinged to the outer wall of the transformer empty load device body, a sealing gasket is bonded to the bottom of the transformer empty load device body, a guiding-out device is arranged on one side of the top of the transformer empty load device body, a display screen is arranged on the other side of the top of the transformer empty load device body, and the guiding-out device and the display screen are electrically connected with the transformer empty load device body. According to the utility model, through the paying-off and winding structure, after the conductive wire in the transformer empty load device body is attached to the wiring end of the transformer, the plane spiral spring resets and pulls the redundant conductive wire to be drawn into the outer wall of the rotating shaft, so that the conductive wire is prevented from being bent in the process of testing the transformer load, and meanwhile, the conductive wire is rotationally drawn into the outer wall of the rotating shaft, and the conductor inside the conductive wire is prevented from being broken due to large-angle bending of the conductive wire in the winding process.

Description

Transformer load testing device

Technical Field

The utility model relates to the field of transformer load testing, in particular to a transformer load testing device.

Background

The average load factor of the transformer is defined as: the ratio of the apparent power of the average output of the transformer to the rated capacity of the transformer is determined in a certain period of time. Multiplying the average load factor of the load curve by a multiple greater than 1, the higher the average load factor of the load curve;

when the load of the transformer is tested, the empty load device of the transformer is connected with the wiring terminal of the transformer through a connecting wire, so that the empty load device body of the transformer is conducted with the transformer;

the empty load tester of the transformer can simultaneously measure the effective value of alternating voltage, voltage average value, effective value, active power, power factor, frequency and other electric parameters of the single-phase or three-phase power transformer, has the measurement accuracy of 0.1 level, is intelligent and specially designed, and is suitable for testing the empty load, induction and other tests of the power transformer.

However, when the transformer empty load tester is in use, the conductor in the conductor of the transformer empty load tester is broken when the conductor of the transformer empty load tester connected with the transformer is bent for a long time, so that the transformer empty load tester cannot be conducted with the transformer.

Therefore, it is necessary to invent a transformer load testing device to solve the above problems.

Disclosure of Invention

The utility model aims to provide a transformer load testing device, which is characterized in that a wire paying-off and winding structure is adopted, after a conductive wire in a transformer empty load device body is attached to a wiring end of a transformer, a plane spiral spring resets and pulls redundant conductive wires to be drawn into the outer wall of a rotating shaft, so that the conductive wires are prevented from being bent in the process of testing the transformer load, meanwhile, the conductive wires are rotated and drawn into the outer wall of the rotating shaft, and the breakage of conductors in the conductive wires caused by large-angle bending in the winding process of the conductive wires can be avoided, so that the defects in the technology are overcome.

In order to achieve the above object, the present utility model provides the following technical solutions: the transformer load testing device comprises a transformer empty load device body, wherein a sealing cover is hinged to the outer wall of the transformer empty load device body, a sealing gasket is bonded to the bottom of the transformer empty load device body, a guiding-out device is arranged on one side of the top of the transformer empty load device body, a display screen is arranged on the other side of the top of the transformer empty load device body, the guiding-out device and the display screen are electrically connected with the transformer empty load device body, a mounting groove is formed in the top of the transformer empty load device body, a first interface is formed in the inner wall of the mounting groove, and a connecting wire is fixedly arranged in the first interface;

the paying-off and winding structure is fixedly arranged on the inner wall of the mounting groove;

the connecting structure is used for connecting the empty load device body of the transformer with the transformer, and is arranged at one end of the paying-off and winding structure.

Preferably, the paying-off and winding structure includes:

the shell is fixedly arranged on the inner wall of the mounting groove, the inner wall of the shell is rotationally connected with a rotating shaft, two ends of the rotating shaft are fixedly connected with plane scroll springs, and one end of each plane scroll spring is fixedly connected with the inner wall of the shell;

the clamping groove is formed in the inner wall of the rotating shaft, the inner wall of the clamping groove is rotationally connected with the outer wall of the connecting wire, and the outer wall of the rotating shaft is arranged on the conductive wire.

Preferably, the outer wall of one end of the conductive wire is attached to the inner wall of the through hole of the pipe at one side of the clamping groove, and one end of the conductive wire is in sliding connection with the outer wall of the connecting wire.

Preferably, the connection structure includes:

the movable block is fixedly arranged at one end of the conductive wire, a wire-releasing groove is formed in one end of the movable block, a pipe through hole is formed between the wire-releasing groove and the movable block, an auxiliary wire is arranged on the inner wall of one end of the movable block, and one end of the auxiliary wire is electrically connected with one end of the conductive wire;

the sliding shaft is in sliding connection in the pipe perforation of unwrapping wire groove and movable block, sliding shaft outer wall fixed mounting has reset spring, the sliding shaft other end is provided with the laminating ring, laminating ring outer wall welding has the laminating strip.

Preferably, the number of the laminating strips is set to be a plurality of, and a plurality of laminating strip annular arrays and the inner side of the laminating ring.

Preferably, the number of the sealing gaskets is multiple, and the sealing gaskets are symmetrically distributed on two sides of the horizontal center line of the transformer empty load device body.

In the technical scheme, the utility model has the technical effects and advantages that:

1. through unwrapping wire admission structure, after laminating the wiring of transformer empty load device body with the wiring end of transformer, the unnecessary conductive wire of plane spiral spring return pulling is received to the outer wall of axis of rotation, avoids the conductive wire to buckle at the in-process that carries out the test to transformer load, and the rotatory income of conductive wire is in the outer wall of axis of rotation simultaneously, can avoid the conductive wire to buckle at the in-process of rolling wide angle and cause the inside conductor fracture of conductive wire.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a perspective cross-sectional view of the present utility model;

FIG. 3 is a perspective cross-sectional view of the pay-off and take-up structure of the present utility model;

fig. 4 is a perspective cross-sectional view of the connection structure of the present utility model.

Reference numerals illustrate:

1. a transformer empty load device body; 2. sealing cover; 3. a sealing gasket; 4. a deriving device; 5. a display screen; 6. a mounting groove; 7. a first interface; 8. connecting wires; 9. paying-off and winding-up structures; 901. a housing; 902. a rotating shaft; 903. a flat spiral spring; 904. a clamping groove; 905. a conductive wire; 10. a connection structure; 1001. a moving block; 1002. wire releasing grooves; 1003. a sliding shaft; 1004. a return spring; 1005. a laminating ring; 1006. a bonding strip; 1007. an auxiliary line.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The utility model provides a transformer load testing device as shown in figures 1-4, which comprises a transformer empty load device body 1, wherein a sealing cover 2 is hinged to the outer wall of the transformer empty load device body 1, a sealing gasket 3 is bonded to the bottom of the transformer empty load device body 1, a lead-out device 4 is arranged on one side of the top of the transformer empty load device body 1, a display screen 5 is arranged on the other side of the top of the transformer empty load device body 1, the lead-out device 4 and the display screen 5 are electrically connected with the transformer empty load device body 1, an installation groove 6 is formed in the top of the transformer empty load device body 1, a first interface 7 is formed in the inner wall of the installation groove 6, and a connecting wire 8 is fixedly installed in the first interface 7;

the paying-off and winding structure 9 is fixedly arranged on the inner wall of the mounting groove 6;

the connection structure 10, the connection structure 10 is used for connecting the empty load device body 1 of the transformer and the transformer, and the connection structure 10 is installed at one end of the paying-off and winding-up structure 9.

Preferably, the paying-off and winding-up structure 9 includes:

the casing 901 is fixedly arranged on the inner wall of the mounting groove 6, a rotating shaft 902 is rotatably connected to the inner wall of the casing 901, two ends of the rotating shaft 902 are fixedly connected with a plane scroll spring 903, and one end of the plane scroll spring 903 is fixedly connected with the inner wall of the casing 901;

the axis of rotation 902, the draw-in groove 904 has been seted up to the axis of rotation 902 inner wall, the inner wall of draw-in groove 904 rotates with the outer wall of connecting wire 8 to be connected, the outer wall of axis of rotation 902 sets up in electric wire 905, the one end outer wall of electric wire 905 is laminated with the perforated inner wall of draw-in groove 904 one side pipe, the one end of electric wire 905 is connected with the outer wall of connecting wire 8 in a sliding manner, when electric wire 905 is pulled, electric wire 905 drives axis of rotation 902 and rotates then axis of rotation 902 extrudees plane scroll spring 903 again, after the connection structure 10 of electric wire 905 one end is fixed with the transformer, plane scroll spring 903 resets and drives unnecessary electric wire 905 income to the outer wall of axis of rotation 902, avoid electric wire 905 buckling and make inside conductor fracture.

Preferably, the connection structure 10 includes:

the movable block 1001, the movable block 1001 is fixedly installed at one end of the conductive wire 905, a wire-releasing groove 1002 is formed in one end of the movable block 1001, a pipe through hole is formed between the wire-releasing groove 1002 and the movable block 1001, an auxiliary wire 1007 is arranged on the inner wall of one end of the movable block 1001, and one end of the auxiliary wire 1007 is electrically connected with one end of the conductive wire 905;

the sliding shaft 1003, sliding shaft 1003 sliding connection is in the through-hole of unwrapping wire groove 1002 and movable block 1001, sliding shaft 1003 outer wall fixed mounting has reset spring 1004, the sliding shaft 1003 other end is provided with laminating ring 1005, laminating ring 1005 outer wall welding has laminating strip 1006, the quantity of laminating strip 1006 sets up to a plurality of, a plurality of laminating strip 1006 annular array and laminating ring 1005's inboard, laminate unwrapping wire groove 1002 and transformer's wiring end, the inner wall of unwrapping wire groove 1002 is made for the brass material, and the inner wall of unwrapping wire groove 1002 is connected with auxiliary line 1007, the laminating ring 1005 of reset spring sliding shaft 1003 front end is laminated with transformer's outer wall, be connected the connection structure 10 stability and the wiring end of being convenient for it, make at movable block 1001 and laminating ring 1005 numerical value material, can avoid movable block 1001 and unwrapping wire groove 1002 to electrically conduct.

Preferably, the number of the sealing gaskets 3 is plural, and the plurality of sealing gaskets 3 are symmetrically distributed on two sides of the horizontal center line of the transformer empty load device body 1.

The working principle of the utility model is as follows:

referring to fig. 1 to 4 of the specification, when the load of the transformer needs to be tested through the transformer empty load device body 1, the connection structure 10 is pulled outwards, the connection structure 10 drives the conductive wire 905 to move outwards, then the conductive wire 905 drives the rotating shaft 902 to rotate and extrudes the plane spiral spring 903, then the inner wall of the paying-off groove 1002 is attached to the wiring end of the transformer, and the reset spring 1004 pushes the attaching ring 1005 at the front end of the sliding shaft 1003 to extrude the wiring end of the transformer, so that the wiring end is attached to the inner wall of the paying-off groove 1002;

referring to fig. 1-4 of the specification, after the connection structure 10 is connected to the transformer, the flat spiral spring 903 resets to drive the redundant conductive wire 905 to be received in the outer wall of the rotating shaft 902, and then the empty load device body 1 of the transformer is started, and the current enters or is led out from the inside of the transformer along the connection wire 8, the conductive wire 905 and the bonding strip 1006, so as to test the load of the transformer.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a transformer load testing arrangement which characterized in that: comprising the following steps:

the transformer empty load device comprises a transformer empty load device body (1), wherein a sealing cover (2) is hinged to the outer wall of the transformer empty load device body (1), a sealing gasket (3) is bonded to the bottom of the transformer empty load device body (1), a guiding-out device (4) is arranged on one side of the top of the transformer empty load device body (1), a display screen (5) is arranged on the other side of the top of the transformer empty load device body (1), the guiding-out device (4) and the display screen (5) are electrically connected with the transformer empty load device body (1), a mounting groove (6) is formed in the top of the transformer empty load device body (1), a first interface (7) is formed in the inner wall of the mounting groove (6), and a connecting wire (8) is fixedly arranged in the first interface (7);

the paying-off and winding structure (9), and the paying-off and winding structure (9) is fixedly arranged on the inner wall of the mounting groove (6);

the connecting structure (10), connecting structure (10) are used for connecting transformer empty load device body (1) and transformer, and connecting structure (10) install in the one end of unwrapping wire admission structure (9).

2. The transformer load testing device according to claim 1, wherein: the paying-off and winding structure (9) comprises:

the casing (901), the casing (901) is fixedly arranged on the inner wall of the mounting groove (6), the inner wall of the casing (901) is rotationally connected with a rotating shaft (902), two ends of the rotating shaft (902) are fixedly connected with a plane scroll spring (903), and one end of the plane scroll spring (903) is fixedly connected with the inner wall of the casing (901);

and the rotating shaft (902), the inner wall of the rotating shaft (902) is provided with a clamping groove (904), the inner wall of the clamping groove (904) is rotationally connected with the outer wall of the connecting wire (8), and the outer wall of the rotating shaft (902) is arranged on the conductive wire (905).

3. A transformer load testing device according to claim 2, wherein: one end outer wall of the conductive wire (905) is attached to the inner wall of the pipe perforation on one side of the clamping groove (904), and one end of the conductive wire (905) is slidably connected with the outer wall of the connecting wire (8).

4. The transformer load testing device according to claim 1, wherein: the connection structure (10) comprises:

the movable block (1001), the movable block (1001) is fixedly arranged at one end of the conductive wire (905), a wire paying-off groove (1002) is formed in one end of the movable block (1001), a pipe perforation is formed between the wire paying-off groove (1002) and the movable block (1001), an auxiliary wire (1007) is arranged on the inner wall of one end of the movable block (1001), and one end of the auxiliary wire (1007) is electrically connected with one end of the conductive wire (905);

the movable paying-off device comprises a sliding shaft (1003), wherein the sliding shaft (1003) is connected in a penetrating hole of a paying-off groove (1002) and a movable block (1001) in a sliding mode, a reset spring (1004) is fixedly arranged on the outer wall of the sliding shaft (1003), an attaching ring (1005) is arranged at the other end of the sliding shaft (1003), and an attaching strip (1006) is welded on the outer wall of the attaching ring (1005).

5. The transformer load testing device of claim 4, wherein: the number of the bonding strips (1006) is multiple, and the plurality of the bonding strips (1006) are annularly arrayed and are arranged on the inner side of the bonding ring (1005).

6. The transformer load testing device according to claim 1, wherein: the number of the sealing gaskets (3) is multiple, and the sealing gaskets (3) are symmetrically distributed on two sides of the horizontal center line of the transformer empty load device body (1).