Withstand voltage testing device for transformer

Abstract

The utility model provides a transformer withstand voltage testing device which comprises a withstand voltage testing seat, a testing plate and a movable pressing plate, a control detection panel is horizontally installed at the front end of the withstand voltage testing seat, an embedded plate is arranged at the upper end in the withstand voltage testing seat, a plurality of detection grooves are formed in the upper end of the embedded plate, and step rods are longitudinally fixed to the periphery of the upper end of the withstand voltage testing seat. The outer portions of the multiple step rods are longitudinally sleeved with reset springs, the upper ends of the outer portions of the multiple step rods are slidably sleeved with the testing plate, a limiting frame is integrally fixed to the upper end of the testing plate, and multiple step clamping grooves are formed in the lower end of the interior of the limiting frame in a penetrating mode. According to the technical scheme of the utility model, the lifting structure is designed, so that the pressure can be uniformly applied to the surface of the transformer, and the uniformity of the applied pressure can be ensured, and therefore, the accuracy and the high precision of the subsequent voltage-withstanding test result can be ensured, and the accuracy and the high precision of the subsequent voltage-withstanding test result can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a transformer withstand voltage testing device and belongs to the technical field of transformer withstand voltage testing. BACKGROUND

[0002] A transformer is a device for changing AC voltage by using the principle of electromagnetic induction, mainly composed of a coil, a core and a pin. In the production process of the transformer, withstand voltage testing is an important means to ensure the quality of the transformer product. The transformer needs to be tested for withstand voltage before leaving the factory. In order to ensure good contact between the transformer and the tester, the transformer and the tester are generally squeezed by a pressing device.

[0003] Publication No. CN210051848U discloses a power frequency transformer withstand voltage testing device. The device can make the transformer and the detection groove in good contact during the withstand voltage testing of the transformer, thereby improving the testing efficiency. However, the device can only swing in the circumferential direction by driving the limiting plate through the hinge. During the swinging process, the transformer on one side will be squeezed first, so that the rest of the transformer will not be subjected to a large pressure, thereby leading to uneven pressure on the surface of the transformer, which will affect the subsequent withstand voltage test results and accuracy. There is an urgent need for a transformer withstand voltage testing device to solve the above problems. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a transformer withstand voltage testing device to solve the problems raised in the background art. The utility model designs a lifting structure that can uniformly apply pressure to the surface of the transformer, ensuring the uniformity of the applied pressure, thereby ensuring the accuracy of the subsequent withstand voltage test results and high accuracy.

[0005] To achieve the above-mentioned purpose, the utility model is implemented by the following technical scheme: a transformer withstand voltage testing device, comprising a withstand voltage testing seat, a testing plate and a moving pressure plate, the withstand voltage testing seat is horizontally installed with a control detection panel at the front end, the withstand voltage testing seat is internally provided with an embedded plate at the upper end, a plurality of detection grooves are formed in the embedded plate, a plurality of step rods are fixed longitudinally around the upper end of the withstand voltage testing seat, a plurality of reset springs are longitudinally sleeved outside the step rods, the testing plate is slidably sleeved on the outside of the upper end of the step rods, a limiting frame is integrally fixed to the upper end of the testing plate, a plurality of step clamping grooves are formed in the lower end of the limiting frame, a plurality of small transformer bodies are clamped in the step clamping grooves, a stand is longitudinally installed at the rear end of the withstand voltage testing seat, an electric telescopic rod is longitudinally installed in the stand, the moving pressure plate is fixed to the movable end of the electric telescopic rod through the flange seat and the bolts, an anti-deviation guide rod is installed on the upper end of the moving pressure plate through the bolts, and the moving pressure plate is located directly above the plurality of small transformer bodies.

[0006] Further, the lower end of the test plate is in abutment with a plurality of reset springs.

[0007] Further, the plurality of small transformer body pin ends are respectively above a plurality of detection grooves.

[0008] Further, the upper end of the limiting frame is provided with a plurality of bolt holes on the left and right sides, and the upper end of the movable pressing plate is symmetrically fixed with fixed strip plates, and the upper end of the two fixed strip plates is provided with hand screws penetratingly through the screw thread principle on the front and rear sides.

[0009] Further, the plurality of hand screws are respectively above the plurality of bolt holes.

[0010] Further, the front end of the stand is provided with an anti-deviation guide groove, and the anti-deviation guide rod slides through the anti-deviation guide groove.

[0011] The transformer withstand voltage testing device has the advantages that the control detection panel, the detection groove, the step rod, the reset spring, the test plate, the limiting frame, the step clamping groove, the electric telescopic rod, the movable pressing plate and the anti-deviation guide rod are added, the device has a reasonable structure, good practicability, and a lifting structure is designed, uniform pressure can be applied to the surface of the transformer, the uniformity of the applied pressure is ensured, the subsequent withstand voltage test result is accurate and has high precision, the tested transformer can be pushed out, and the work personnel can conveniently take it. BRIEF DESCRIPTION OF DRAWINGS

[0012] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings:

[0013] Figure 1 It is a whole structure perspective view of the transformer withstand voltage testing device of the present application;

[0014] Figure 2 It is a step clamping groove distribution schematic view of the transformer withstand voltage testing device of the present application;

[0015] Figure 3 It is a detection groove position schematic view of the transformer withstand voltage testing device of the present application.

[0016] In the figure: 1 - withstand voltage test seat, 2 - control detection panel, 3 - embedded plate, 4 - detection groove, 5 - step rod, 6 - reset spring, 7 - small transformer body, 8 - test plate, 9 - limiting frame, 10 - step clamping groove, 11 - bolt hole, 12 - stand, 13 - electric telescopic rod, 14 - moving pressure plate, 15 - fixed strip, 16 - hand bolt, 17 - anti-deviation guide rod, 18 - anti-deviation guide groove. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0018] Please refer to Figures 1-3 The utility model provides a kind of technical scheme: a transformer withstand voltage test device, including withstand voltage test seat 1, test plate 8 and moving pressure plate 14, withstand voltage test seat 1 front end is horizontally installed with control detection panel 2, withstand voltage test seat 1 inside upper end is provided with embedded plate 3, and embedded plate 3 upper end is provided with multiple detection grooves 4, withstand voltage test seat 1 upper end is all fixed with step rod 5 around longitudinally, multiple step rods 5 are all longitudinally sleeved with reset spring 6, test plate 8 is slidably sleeved on the upper end of the outside of multiple step rods 5, limit frame 9 is integrally fixed on the upper end of test plate 8, multiple step clamping grooves 10 are penetrated and arranged in the lower end of limit frame 9, and small transformer body 7 is clamped in multiple step clamping grooves 10, withstand voltage test seat 1 rear end is longitudinally installed with stand 12, stand 12 is longitudinally installed with electric telescopic rod 13 in the upper end of inside, and electric telescopic rod 13 movable end is fixed with moving pressure plate 14 by flange seat and bolt, moving pressure plate 14 upper end rear side is installed with anti-deviation guide rod 17 by bolt, moving pressure plate 14 is just above multiple small transformer body 7, and the design solves the problem that original device is extruded to transformer, which leads to uneven pressure on the surface of transformer, affects subsequent withstand voltage test results and accuracy.

[0019] As the first embodiment of the utility model: test plate 8 lower end is in contact with multiple reset springs 6, by adding test plate 8 lower end in contact with multiple reset springs 6, multiple reset springs 6 can be compressed downward when test plate 8 is pressed and moves downward. Multiple small transformer body 7 pin ends are respectively just above multiple detection grooves 4, by adding multiple small transformer body 7 pin ends respectively just above multiple detection grooves 4, each small transformer body 7 pin end can be inserted into each detection groove 4 for detection when multiple small transformer body 7 is pressed and moves downward.

[0020] A plurality of bolt holes 11 are formed in the upper left and right sides of the limiting frame 9, and a fixed baffle 15 is symmetrically fixed to the upper left and right sides of the movable pressing plate 14, and a hand screw bolt 16 is arranged on the upper front and rear sides of the two fixed baffles 15 through the screw principle, and the plurality of hand screw bolts 16 are respectively arranged above the plurality of bolt holes 11, and when the threaded end of the plurality of hand screw bolts 16 is screwed into the plurality of bolt holes 11, the movable pressing plate 14 can be locked on the upper side of the limiting frame 9. The front end of the stand 12 is provided with an anti-deviation guide groove 18, and the anti-deviation guide rod 17 slides through the anti-deviation guide groove 18, and the anti-deviation guide rod 17 is added to slide through the anti-deviation guide groove 18, and when the movable pressing plate 14 is driven to rise by the movable end of the electric telescopic rod 13, it slides to ensure that the movable pressing plate 14 does not deviate when rising.

[0021] As a second embodiment of the utility model: first, each small transformer body 7 is placed in the plurality of stepped clamping grooves 10, so that the plurality of small transformer body 7 pin ends are respectively arranged above the plurality of detection grooves 4 (reference Figure 1 ), then start the electric telescopic rod 13, the movable end of the electric telescopic rod 13 drives the movable pressing plate 14 to move down (in this process, the anti-deviation guide rod 17 moves down in the anti-deviation guide groove 18), until the movable pressing plate 14 contacts the plurality of small transformer body 7, and presses down the plurality of small transformer body 7, the small transformer body 7 can transmit the pressing force to the limiting frame 9 and the test plate 8, so that the test plate 8 moves horizontally outside the plurality of stepped rods 5, and compresses the plurality of reset springs 6 downward, at this time, the test plate 8 and the plurality of small transformer body 7 move downward until the pin end of each small transformer body 7 can be inserted into each detection groove 4, the threaded end of the plurality of hand screw bolts 16 is screwed into the plurality of bolt holes 11, and the movable pressing plate 14 is locked on the upper side of the limiting frame 9, finally, the small transformer body 7 can be tested by controlling the detection panel 2 (note: the control detection panel 2 is a kind of integrated hardware equipment, usually used in industrial automation, power system, communication equipment and other fields, to realize the monitoring, operation and fault diagnosis of various electrical and mechanical equipment. It integrates a variety of functional modules, including but not limited to input and output interface, display unit, alarm system, data acquisition and processing unit, etc., in the device, the control detection panel 2 is connected with each electrical element through wires, because it is a mature existing equipment and technology, so it can realize the above-mentioned test step principle, and it is not described in detail in the utility model).

[0022] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0023] In addition, it should be understood that, although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A transformer withstand voltage testing device, comprising a withstand voltage testing seat (1), a testing plate (8) and a moving pressure plate (14), characterized in that: The control detection panel (2) is horizontally installed at the front end of the pressure test seat (1), the embedded plate (3) is arranged at the upper end of the pressure test seat (1), a plurality of detection grooves (4) are formed in the upper end of the embedded plate (3), the stepped rods (5) are fixed on the upper end of the pressure test seat (1) in a longitudinal direction, and the reset springs (6) are longitudinally sleeved on the outer portions of the stepped rods (5). The test plate (8) is slidably sleeved on the outer portions of the stepped rods (5), the limit frame (9) is fixed on the upper end of the test plate (8), the stepped clamping grooves (10) are formed in the lower end of the limit frame (9), the small transformer bodies (7) are clamped in the stepped clamping grooves (10), the stand (12) is longitudinally installed at the rear end of the pressure test seat (1), the electric telescopic rod (13) is longitudinally installed at the upper end of the stand (12), the movable end of the electric telescopic rod (13) is fixed to the movable pressing plate (14) through the flange seat and the bolts, the anti-deviation guide rod (17) is installed on the rear side of the upper end of the movable pressing plate (14) through the bolts, and the movable pressing plate (14) is located above the small transformer bodies (7).

2. The transformer voltage withstand test device of claim 1, wherein: The lower end of the test plate (8) is abutted against the reset springs (6).

3. The transformer voltage withstand test device of claim 1, wherein: The pin ends of the small transformer bodies (7) are located above the detection grooves (4).

4. The transformer voltage withstand test device of claim 1, wherein: The limit frame (9) is provided with the bolt holes (11) on the upper end and left and right sides, the fixed strip plates (15) are fixed on the upper end and left and right sides of the movable pressing plate (14), and the hand bolts (16) are arranged on the upper end and front and back sides of the fixed strip plates (15) through the threaded principle.

5. The transformer voltage withstand test apparatus of claim 4, wherein: The hand bolts (16) are located above the bolt holes (11).

6. The transformer voltage withstand test device of claim 1, wherein: The anti-deviation guide groove (18) is formed in the front end of the stand (12), and the anti-deviation guide rod (17) is slidably arranged in the anti-deviation guide groove (18).

Images