CN217561618U - Resonance test device for dry power transformer detection - Google Patents

Abstract

The utility model discloses a resonance test device for detecting a dry-type power transformer, in particular to the technical field of a power equipment detection test device, which comprises a box body, wherein a test mechanism is detachably connected in the box body, the test mechanism comprises a power supply, a variable frequency power supply, an intermediate transformer, a high-voltage filter, a high-voltage measuring instrument, a compensator, a local signal sampling device and a local tester, and the test mechanisms are connected by wires; the box internal rotation is connected with the pivot, and coaxial coupling has the bobbin in the pivot, installs the guide block in the box, is connected with the electric wire between bobbin and the test mechanism, and the through-hole has been seted up to the box lateral wall, and coaxial coupling has the gear in the pivot, and the gear engagement has the rack, fixedly connected with spring between rack and the box. The utility model provides an among the prior art detection test device the electric wire twines together easily, is not convenient for carry out the detection test, influences dry-type power transformer's the problem of normal use, and easy operation is convenient, and the practicality is strong.

Description

Resonance test device for dry power transformer detection

Technical Field

The utility model relates to a power equipment's test device especially relates to a resonance test device that dry-type power transformer detected.

Background

Dry power transformers have the advantages of compact structure, no oil contamination, fire protection, and the like, and are therefore widely used. However, local process defects of the dry-type transformer, such as air holes, impurity particles and the like, may cause the through dielectric breakdown to damage the equipment, and cause fatal damage.

In order to avoid the harm, the dry-type power transformer needs to be subjected to a detection resonance test at regular time so as to improve the running reliability of the equipment. The resonance testing device for detecting the equipment mainly comprises a power supply, a variable frequency power supply, an intermediate transformer, a high-voltage filter, a high-voltage measuring instrument, a compensator, a local signal sampling device, a local tester and other equipment which are electrically connected, so that a plurality of electric wires with different specifications can be arranged in the testing device. The long wire is easy to be twisted with other objects, and the twisted and scattered wires are inconvenient for detection test.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a resonance test device that dry-type power transformer detected to solve prior art and detect the easy winding of electric wire in testing the device and be in the same place, be not convenient for carry out the test, influence dry-type power transformer's the problem of normal use.

In order to achieve the above object, the utility model provides a following technical scheme: a resonance test device for detecting a dry-type power transformer comprises a box body, wherein the box body is of a rectangular structure, a box door is arranged at the front end of the box body, a test mechanism is detachably connected in the box body, the test mechanism comprises a power supply, a variable frequency power supply, an intermediate transformer, a high-voltage filter, a high-voltage measuring instrument, a compensator, a local signal sampling device and a local tester, and the test mechanisms are all connected through wires; the box internal rotation is connected with the pivot, coaxial coupling has the bobbin in the pivot, the guide block is installed to the position that is close to the pivot in the box, be connected with the electric wire between bobbin and the test mechanism, the through-hole has been seted up to the box lateral wall, and the electric wire end runs through the through-hole, coaxial coupling has the gear in the pivot, gear engagement has the rack, rack sliding connection is at the box inner wall, fixedly connected with spring between rack and the box.

The technical principle of the scheme is as follows: the wire is wound on the winding reel, and one end of the wire penetrates through the through hole and is outside the box body. When the testing device is used, the end of the electric wire outside the box body is pulled, the electric wire drives the winding drum to rotate, the winding drum is in a paying-off process, the rotating shaft drives the gear to rotate together, the gear drives the rack to move, the spring is stretched, and when the testing device and the dry-type power transformer are connected, the rotating shaft stops rotating, and the winding drum stops paying-off.

After the test is finished, the electric wire is disconnected with the dry-type power transformer, the spring starts to recover the original state, the rack is pulled to slide, the rack drives the gear to rotate reversely, the winding reel rotates reversely, and the electric wire outside the box body is withdrawn into the box body.

Preferably, the bobbin is coaxially connected with a round wheel, the top in the box body is rotatably connected with a rotating rod, the fan blades are installed at the bottom end of the rotating rod, and a belt is connected between the rotating rod and the round wheel.

Preferably, a clip is fixedly connected to the position, close to the through hole, of the box body.

Preferably, the clip is wrapped with a rubber layer.

Preferably, the testing mechanism is connected in the box body through a pin.

Preferably, a movable platform is installed at the bottom of the box body, rollers are installed at the bottom of the movable platform, and a movable handle is connected to the front end of the upper side of the movable platform in a clamping mode.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the winding reel is arranged in the box body, so that the wires can be uniformly wound on the winding reel when the device is not used, and the problems that the wires in the box body are too much and are randomly wound together are effectively avoided; when the testing device is used, the wire is pulled, so that the connection test with the transformer can be easily completed, and the wire is kept comfortable and smooth all the time in the whole process; 2. the interaction among the gear, the rack and the spring is utilized, so that the electric wire is automatically recovered into the box body after the use, the manual recovery is not needed, the time and the labor are saved, and the convenience and the rapidness are realized; 3. the rotating shaft drives the round wheel to rotate in the rotating process, the round wheel drives the fan blades to rotate through the belt, and the fan blades generate air flow in the rotating process, so that the dust can be cleaned on the testing device.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a resonance testing apparatus for dry power transformer detection according to the present invention;

fig. 2 is a schematic view of the connection between the rack and the pinion of the present invention.

In the figure: the device comprises a box body 1, a box door 2, a power supply 3, a variable frequency power supply 4, an intermediate transformer 5, a high-voltage filter 6, a high-voltage measuring instrument 7, a compensator 8, a local signal sampling device 9, a local tester 10, a rotating shaft 11, a winding reel 12, a round wheel 13, a lead block 14, fan blades 15, a gear 16, a rack 17, a spring 18, a movable platform 19 and a movable handle 20.

The specific implementation mode is as follows:

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.

Referring to fig. 1-2, the present invention provides an embodiment: the utility model provides a resonance test device that dry-type power transformer detected, includes box 1, and box 1 is the rectangle structure, and 1 front end of box is equipped with chamber door 2, but pin joint has test mechanism in the box 1, and test mechanism includes power 3, variable frequency power supply 4, intermediate transformer 5, high voltage filter 6, high-voltage measurement appearance 7, compensator 8, local signal sampling device 9, local tester 10, is the connection of electric lines between the test mechanism.

The rotating shaft 11 is connected with the inner rotation of the box body 1, the bobbin 12 is coaxially connected to the rotating shaft 11, the guide block is installed at a position, close to the rotating shaft 11, in the box body 1, an electric wire is connected between the bobbin 12 and the testing mechanism, a through hole is formed in the side wall of the box body 1, the end of the electric wire penetrates through the through hole, and a clamp with a rubber layer wrapped on the surface is fixedly installed at a position, close to the through hole, in the box body 1. A gear 16 is coaxially connected to the rotating shaft 11 below the bobbin 12, the gear 16 is engaged with a rack 17, the rack 17 is slidably connected to the inner wall of the box 1, and a spring 18 is fixedly connected between the rack 17 and the box 1. The top end of the winding reel 12 is coaxially connected with a round wheel 13, the inner top of the box body 1 is rotatably connected with a rotating rod, the bottom end of the rotating rod is provided with a fan blade 15, and a belt is connected between the rotating rod and the round wheel 13.

The bottom of the box body 1 is provided with a movable platform 19, the bottom of the movable platform 19 is provided with a roller, and the right front end position of the movable platform 19 is connected with a movable handle 20 for pushing the movable platform 19 to move through a buckle.

The working principle is as follows: in the initial state, the electric wire is wound on the bobbin 12, and the clamp at the through hole on the box body 1 clamps part of the electric wire outside the box body 1.

When a detection test is needed, a professional holds the movable handle 20 by hand, pushes the movable platform 19 to a position close to the transformer, opens the clamp, pulls the electric wire, the electric wire drives the winding reel 12 and the rotating shaft 11 to rotate, the winding reel 12 is a paying-off process, meanwhile, the rotating shaft 11 drives the gear 16 to rotate, the gear 16 drives the rack 17 to move, and the spring 18 is stretched. After the testing device is connected with the transformer, the clamp is reused to clamp and fix the electric wire, so that the detection test of the transformer can be easily completed.

After the test is finished, the connection between the test device and the transformer is disconnected, the clamp is loosened, the spring 18 is restored to the original state to drive the rack 17 to move reversely, the rack 17 drives the gear 16 to rotate reversely, the winding drum 12 starts the winding process, and the electric wire outside the box body 1 is retracted and wound on the winding drum 12. In the rotating process of the bobbin 12, the fan blades 15 can be driven to rotate, and in the rotating process of the fan blades 15, air flow is generated, so that the box body 1 is effectively dedusted.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a resonance test device that dry-type power transformer detected, includes the box, its characterized in that: the box body is of a rectangular structure, a box door is arranged at the front end of the box body, a testing mechanism is detachably connected in the box body, the testing mechanism comprises a power supply, a variable frequency power supply, an intermediate transformer, a high-voltage filter, a high-voltage measuring instrument, a compensator, a local signal sampling device and a local tester, and the testing mechanisms are all connected through wires; the box rotates in and is connected with the pivot, coaxial coupling has the bobbin in the pivot, the guide block is installed to the position that is close to the pivot in the box, be connected with the electric wire between bobbin and the test mechanism, the through-hole has been seted up to the box lateral wall, and the electric wire end runs through the through-hole, coaxial coupling has the gear in the pivot, gear engagement has the rack, rack sliding connection is at the box inner wall, fixedly connected with spring between rack and the box.

2. A resonance testing apparatus for dry-type power transformer testing according to claim 1, characterized in that: the bobbin coaxial coupling has the round wheel, the top rotates in the box and is connected with the dwang, the flabellum is installed to the dwang bottom, is connected with the belt between dwang and the round wheel.

3. A resonance testing apparatus for dry-type power transformer testing according to claim 2, characterized in that: and a clamp is fixedly connected to the position, close to the through hole, on the box body.

4. A resonance testing apparatus for dry-type power transformer testing according to claim 3, characterized in that: the clamp is wrapped with a rubber layer.

5. A resonance testing device for dry-type power transformer detection according to claim 4, characterized in that: the testing mechanism is connected in the box body through pins.

6. A resonance testing apparatus for dry-type power transformer testing according to claim 5, characterized in that: the improved refrigerator is characterized in that a movable platform is mounted at the bottom of the refrigerator body, rollers are mounted at the bottom of the movable platform, and a movable handle is connected to the front end of the upper side of the movable platform in a clamping mode.

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