Oiled paper insulation detection device

Abstract

The utility model relates to an oil paper insulation detection device, which comprises a box body, an adjusting assembly, a measuring electrode and a high-voltage electrode, a measuring cavity is formed in the box body, the measuring electrode and the high-voltage electrode are arranged in the measuring cavity and are oppositely arranged, and the adjusting assembly comprises a sleeve, an adjusting screw rod and a guide rod, the sleeve is arranged at the top of the box body, the adjusting screw partially penetrates through the sleeve and is in threaded connection with the sleeve, one end of the guide rod is elastically connected with the adjusting screw, and the other end of the guide rod is connected with one of the measuring electrode and the high-voltage electrode. And the distance between the measuring electrode and the high-voltage electrode is adjusted. According to the technical scheme, the oil paper insulation detection device can improve the accuracy of an oil paper insulation detection result.

Description

Technical Field

[0001] The present disclosure relates to the technical field of transformers, and in particular to an oil-paper insulation detection device. Background Art

[0002] The transformer oil-paper insulation structure is a common insulation structure for power equipment, mainly composed of windings, oil-paper and insulating oil. Inside the transformer, the windings and oil-paper are immersed in insulating oil to form an insulation system for protecting and isolating the conductive parts inside the transformer. Among them, oil-paper is a kind of paper made of natural or synthetic fibers. After special treatment, it has good insulation properties, can resist voltage breakdown, prevent excessive current from damaging the wire, and maintain the normal operation of the transformer.

[0003] In the related art, when conducting a dielectric response test on oil paper to determine its insulation performance, it is often necessary to test oil paper samples of different thicknesses at a certain temperature. The existing three-electrode measurement method has the defect that the distance between the high-voltage electrode and the measuring electrode cannot be adjusted, and has poor compatibility with oil paper insulation test samples of different thicknesses. In addition, in the process of clamping the oil paper by the measuring electrode, the oil paper is easily deformed, affecting the test results and test accuracy. Utility Model Content

[0004] The purpose of the present disclosure is to provide an oil-paper insulation detection device, which can improve the accuracy of oil-paper insulation detection results.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides an oil-paper insulation detection device, including a housing, an adjustment component, a measuring electrode and a high-voltage electrode, the housing is formed with a measuring cavity, the measuring electrode and the high-voltage electrode are arranged in the measuring cavity and are arranged relatively, the adjustment component includes a sleeve, an adjustment screw and a guide rod, the sleeve is arranged at the top of the housing, the adjustment screw is partially passed through the sleeve and is threadedly connected to the sleeve, one end of the guide rod is elastically connected to the adjustment screw, and the other end is connected to one of the measuring electrode and the high-voltage electrode, so as to adjust the distance between the measuring electrode and the high-voltage electrode.

[0006] Optionally, the adjustment assembly includes a connecting block, which is rotatably disposed in the sleeve and fixedly connected to the adjusting screw, and a through hole is provided on the top wall of the box body, one end of the guide rod is elastically connected to the connecting block, and the other end extends into the measuring cavity through the through hole and is fixedly connected to one of the measuring electrode and the high-voltage electrode.

[0007] Optionally, a slide groove is opened in the connecting block and an abutment flange is formed, an abutment block is provided at one end of the guide rod away from the measuring electrode or the high-voltage electrode, the abutment block can be slidably arranged in the slide groove and abut against the abutment flange, and the adjustment assembly includes an elastic member, which is sleeved on the outer side of the guide rod and abuts between the top wall and the connecting block.

[0008] Optionally, the connection block is further provided with a limiting groove arranged along the first direction, and the inner wall of the sleeve is provided with a limiting block, and the limiting block is slidably connected in the limiting groove.

[0009] Optionally, a turntable is provided at one end of the adjusting screw away from the connecting block.

[0010] Optionally, the measuring electrode is fixed on the bottom wall of the box body, and the high-voltage electrode is fixedly connected to the guide rod.

[0011] Optionally, the oil-paper insulation detection device includes a protective electrode, and the protective electrode is connected to the measuring electrode.

[0012] Optionally, the oil-paper insulation detection device includes an oil filling valve and an oil drain valve, the box body has a relative top wall and a bottom wall, the oil filling valve is arranged on the top wall and communicated with the measuring cavity, and the oil drain valve is arranged on the bottom wall and communicated with the measuring cavity.

[0013] Optionally, the oil-paper insulation detection device comprises a temperature sensor, which is arranged in the measuring cavity and fixed to the bottom wall, so as to measure the temperature of the insulating oil in the measuring cavity.

[0014] Optionally, the oil-paper insulation detection device includes a plurality of supports, and the supports are fixed to the bottom wall of the box body to support the box body.

[0015] Through the above technical scheme, in the oil-paper insulation detection device provided by the present disclosure, the box body is formed with a measuring cavity, the measuring electrode and the high-voltage electrode are arranged relatively in the measuring cavity, the sleeve is arranged at the top of the box body, the adjusting screw part is inserted into the sleeve and is threadedly connected with the sleeve, the guide rod is connected with one of the measuring electrode and the high-voltage electrode, and is elastically connected with the adjusting screw, so that when the distance between the measuring electrode and the high-voltage electrode needs to be adjusted, the adjusting screw is rotated to make the adjusting screw move along the axial direction of the sleeve to drive the guide rod to move, and then drive one of the measuring electrode and the high-voltage electrode to move relative to the other, so as to achieve the purpose of adjusting the distance between the measuring electrode and the high-voltage electrode. In addition, under normal circumstances, the oil paper is clamped between the measuring electrode and the high-voltage electrode to perform insulation detection on it, and the guide rod is elastically connected with the adjusting screw, that is, one of the measuring electrode and the high-voltage electrode is elastically connected with the adjusting screw, so that it can avoid the oil paper arranged between the measuring electrode and the high-voltage electrode from sinking and compressing due to excessive force during the pressing process, which affects the accuracy of the detection result.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of the oil-paper insulation detection device provided in an embodiment of the present disclosure.

[0019] Description of Reference Numerals

[0020] 1-housing; 11-measuring chamber; 12-top wall; 13-bottom wall; 2-adjusting assembly; 21-sleeve; 211-limiting block; 22-adjusting screw; 221-turntable; 23-connecting block; 231-slide; 232-abutting flange; 233-limiting groove; 24-guide rod; 241-abutting block; 25-elastic member; 3-measuring electrode; 4-high voltage electrode; 5-protective electrode; 61-oil filling valve; 62-oil drain valve; 7-temperature sensor; 8-support. DETAILED DESCRIPTION

[0021] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0022] In the present disclosure, unless otherwise stated, directional words such as "top and bottom" generally refer to the "top and bottom" in the height direction relative to the corresponding component in the use state, and "inside and outside" generally refer to the "inside and outside" relative to the corresponding component's own contour. The terms "first" and "second" and the like are used to distinguish one element from another and have no order or importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as limitations on the present disclosure.

[0023] According to the specific implementation scheme provided by the present disclosure, Figure 1 As shown in the figure, an oil-paper insulation detection device is provided, including a housing 1, an adjustment component 2, a measuring electrode 3 and a high-voltage electrode 4, the housing 1 is formed with a measuring cavity 11, the measuring electrode 3 and the high-voltage electrode 4 are arranged in the measuring cavity 11 and are arranged relatively, the adjustment component 2 includes a sleeve 21, an adjusting screw 22 and a guide rod 24, the sleeve 21 is arranged at the top of the housing 1, the adjusting screw 22 is partially penetrated in the sleeve 21 and is threadedly connected to the sleeve 21, one end of the guide rod 24 is elastically connected to the adjusting screw 22, and the other end is connected to one of the measuring electrode 3 and the high-voltage electrode 4, so as to adjust the distance between the measuring electrode 3 and the high-voltage electrode 4.

[0024] Through the above technical scheme, in the oil-paper insulation detection device provided by the present disclosure, the box body 1 is formed with a measuring cavity 11, the measuring electrode 3 and the high-voltage electrode 4 are arranged relatively in the measuring cavity 11, the sleeve 21 is arranged on the top of the box body 1, the adjusting screw 22 is partially inserted into the sleeve 21 and is threadedly connected with the sleeve 21, the guide rod 24 is connected to one of the measuring electrode 3 and the high-voltage electrode 4, and is elastically connected to the adjusting screw 22. In this way, when it is necessary to adjust the distance between the measuring electrode 3 and the high-voltage electrode 4, the adjusting screw 22 is rotated to make the adjusting screw 22 move along the axial direction of the sleeve 21 to drive the guide rod 24 to move, thereby driving one of the measuring electrode 3 and the high-voltage electrode 4 to move relative to the other, thereby achieving the purpose of adjusting the distance between the measuring electrode 3 and the high-voltage electrode 4. In addition, under normal circumstances, the oil paper is clamped between the measuring electrode 3 and the high-voltage electrode 4 to perform insulation detection on them, and the guide rod 24 is elastically connected to the adjusting screw 22, that is, one of the measuring electrode 3 and the high-voltage electrode 4 is elastically connected to the adjusting screw 22. In this way, it is possible to avoid the oil paper set between the measuring electrode 3 and the high-voltage electrode 4 from sinking and compressing due to excessive force during the pressing process, thereby affecting the accuracy of the detection result.

[0025] In the oil-paper insulation detection device provided by the present disclosure, the guide rod 24 can be elastically connected to the adjusting screw 22 in any suitable manner, and the present disclosure does not impose any specific restrictions on this. Figure 1 As shown in the figure, the adjustment assembly may include a connecting block 23, which is rotatably arranged in the sleeve 21 and fixedly connected to the adjusting screw 22. The top wall 12 of the box body 1 may be provided with a through hole. One end of the guide rod 24 may be elastically connected to the connecting block 23, and the other end may be extended into the measuring cavity 11 through the through hole and fixedly connected to one of the measuring electrode 3 and the high-voltage electrode 4. That is to say, the guide rod 24 is elastically connected to the adjusting screw 22 through the connecting block 23, and the connecting block 23 is rotatably arranged in the sleeve 21, which can avoid the interference of the connecting block 23 with the rotation of the adjusting screw 22.

[0026] The guide rod 24 can be elastically connected to the connecting block 23 in any suitable manner, and the present disclosure does not impose any specific limitation on this. Figure 1 As shown in the figure, a slide groove 231 may be opened in the connecting block 23 and abutment flange 232 may be formed, and an abutment block 241 may be provided at the end of the guide rod 24 away from the measuring electrode 3 or the high-voltage electrode 4. The abutment block 241 can be slidably arranged in the slide groove 231 and abut against the abutment flange 232. The adjustment component may include an elastic member 25, which can be sleeved on the outer side of the guide rod 24 and abut between the top wall 12 and the connecting block 23. In this way, when the guide rod 24 moves to the specified position driven by the adjusting bolt, that is, the measuring electrode 3 or the high-voltage electrode 4 reaches the specified position driven by the guide rod 24, the oil paper is clamped between the measuring electrode 3 and the high-voltage electrode 4. The setting of the elastic member 25 can provide a certain buffer for the measuring electrode 3 and the high-voltage electrode 4 to clamp the oil paper, so as to avoid the oil paper from sinking and deforming, thereby affecting the measurement result. Specifically, when one of the measuring electrode 3 and the high-voltage electrode 4 contacts the oil paper and causes an impact under the drive of the guide rod 24, the oil paper can push the guide rod 24 to move toward the connecting block 23. At this time, the abutment block 241 slides in the slide groove 231, and the elastic member 25 is compressed. When the detection is completed and the oil paper is separated from the measuring electrode 3 and the high-voltage electrode 4, the elastic member 25 returns to its original state and pushes the guide rod 24 away from the connecting block 23 to its original position.

[0027] In the oil-paper insulation detection device provided by the present disclosure, the sleeve 21 and the connecting block 23 can limit the movement range of the connecting block 23 in the sleeve 21 in any suitable manner, and the present disclosure does not impose any specific restrictions on this. As an exemplary embodiment, refer to Figure 1As shown in , the connection block 23 may also be provided with a limiting groove 233 arranged along the first direction, and the inner wall of the sleeve 21 may be provided with a limiting block 211, and the limiting block 211 is slidably connected in the limiting groove 233. In this way, when the connection block 23 moves along the axial direction of the sleeve 21 driven by the adjusting bolt, the limiting block 211 can be stuck on the two side walls of the limiting groove 233 to limit the movement of the connection block 23 in the axial direction of the sleeve 21 within the limiting groove 233. In addition, in the present disclosure, in order not to interfere with the rotation of the connection block 23 in the sleeve 21, the connection block 23 may be provided as a cylindrical member matching the shape of the sleeve 21, the limiting groove 233 may be configured as a groove extending along the circumferential direction of the cylindrical member, and the limiting block 211 may be configured as an annular protrusion provided on the inner wall of the sleeve 21 and matched with the groove to achieve sliding fit with the limiting groove 233.

[0028] In the oil-paper insulation detection device provided in the present disclosure, as an exemplary embodiment, reference is made to Figure 1 As shown in the figure, a turntable 221 can be provided at one end of the adjusting screw 22 away from the connecting block 23, so that the staff can rotate the adjusting screw 22 to realize the movement of the adjusting screw 22 relative to the sleeve 21, and then realize the movement of the guide rod 24 relative to the sleeve 21, and finally realize the adjustment of the distance between the measuring electrode 3 and the high-voltage electrode 4.

[0029] In the oil-paper insulation detection device provided by the present disclosure, any one of the measuring electrode 3 and the high-voltage electrode 4 can be fixedly connected to the guide rod 24, and the other can be fixed in the measuring cavity 11 in any suitable manner, and the present disclosure does not make any specific restrictions on this. As an exemplary embodiment, refer to Figure 1 As shown in , the measuring electrode 3 can be fixed on the bottom wall 13 of the box body 1, and the high-voltage electrode 4 can be fixedly connected to the guide rod 24, so that the guide rod 24 is driven by the adjusting screw 22 to drive the high-voltage electrode 4 to move relative to the measuring electrode 3, so as to adjust the distance between the high-voltage electrode 4 and the measuring electrode 3. Among them, the measuring electrode 3 can be fixed on the bottom wall 13 of the box body 1 in any suitable manner, such as bonding or connecting by fasteners, etc., and the present disclosure does not make specific restrictions on this.

[0030] In the oil-paper insulation detection device provided in the present disclosure, as an exemplary embodiment, reference is made to Figure 1 As shown in , the oil-paper insulation detection device may include a protective electrode 5, which is connected to the measuring electrode 3. In actual working process, the protective electrode 5 can be grounded while being connected to the measuring electrode 3 to improve the safety of the oil-paper insulation detection device.

[0031] In the oil-paper insulation detection device provided in the present disclosure, as an exemplary embodiment, reference is made to Figure 1As shown in the figure, the oil-paper insulation detection device may include an oil filling valve 61 and an oil drain valve 62. The box body 1 has a relative top wall 12 and a bottom wall 13. The oil filling valve 61 can be arranged on the top wall 12 and communicated with the measuring cavity 11. The oil drain valve 62 can be arranged on the bottom wall 13 and communicated with the measuring cavity 11. Since the oil-immersed insulation structure is mainly composed of windings, oil paper and insulating oil, inside the transformer, the windings and oil paper are immersed in insulating oil. Therefore, when performing insulation detection on the oil paper, it is necessary to place the oil paper in an insulating oil environment. The setting of the oil filling valve 61 and the oil drain valve 62 can facilitate the injection and discharge of insulating oil in the measuring cavity 11.

[0032] As an exemplary embodiment, reference is made to Figure 1 As shown in the figure, the oil-paper insulation detection device can also include a temperature sensor 7. The temperature sensor 7 can be arranged in the measuring cavity 11 and fixed to the bottom wall 13 to measure the temperature of the insulating oil in the measuring cavity 11. Since the temperature of the insulating oil will change according to the length of time the transformer is used during the operation of the oil-paper in the transformer, and the change in the insulating oil temperature will affect the insulation performance of the oil-paper. Therefore, the setting of the temperature sensor 7 enables the staff to monitor the temperature of the insulating oil in real time to realize the detection of the insulation performance of the oil-paper at different temperatures.

[0033] In the oil-paper insulation detection device provided in the present disclosure, as an exemplary embodiment, reference is made to Figure 1 As shown in , the oil-paper insulation detection device may further include a plurality of supports 8 , which are fixed to the bottom wall 13 of the box body 1 to support the box body 1 .

[0034] In summary, when the oil-paper insulation detection device provided by the present invention is used, the oil paper is first placed on the measuring electrode 3 in the measuring cavity 11, and then the adjusting screw 22 is adjusted according to the different thicknesses of the oil paper to drive the high-voltage electrode 4 to a suitable position to contact the oil paper, and the guide rod 24 moves toward the connecting block 23 to compress the elastic member 25 to avoid impact on the oil paper, and finally, the insulating oil is injected into the measuring cavity 11 through the oil filling valve 61, the temperature of the insulating oil is determined by the temperature sensor 7 and adjusted appropriately, and the insulation performance of the oil paper is tested by the dielectric response tester.

[0035] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0036] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0037] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An oil-paper insulation detection device, characterized in that: It includes a box body, an adjustment component, a measuring electrode and a high-voltage electrode. The box body is formed with a measuring cavity. The measuring electrode and the high-voltage electrode are arranged in the measuring cavity and are arranged relatively to each other. The adjustment component includes a sleeve, an adjustment screw and a guide rod. The sleeve is arranged on the top of the box body. The adjusting screw is partially passed through the sleeve and is threadedly connected to the sleeve. One end of the guide rod is elastically connected to the adjusting screw, and the other end is connected to one of the measuring electrode and the high-voltage electrode, so as to adjust the distance between the measuring electrode and the high-voltage electrode.

2. The oil-paper insulation detection device according to claim 1, characterized in that: The adjustment assembly includes a connecting block, which is rotatably arranged in the sleeve and fixedly connected to the adjusting screw. A through hole is opened on the top wall of the box body. One end of the guide rod is elastically connected to the connecting block, and the other end extends into the measuring cavity through the through hole and is fixedly connected to one of the measuring electrode and the high-voltage electrode.

3. The oil-paper insulation detection device according to claim 2, characterized in that: The connecting block is provided with a slide groove and a contact flange, and an end of the guide rod away from the measuring electrode or the high-voltage electrode is provided with a contact block, and the contact block is slidably arranged in the slide groove and abuts against the contact flange. The adjustment assembly comprises an elastic member, which is sleeved on the outer side of the guide rod and abuts between the top wall and the connecting block.

4. The oil-paper insulation detection device according to claim 3 is characterized in that: The connection block is further provided with a limiting groove arranged along the first direction, and the inner wall of the sleeve is provided with a limiting block, and the limiting block is slidably connected in the limiting groove.

5. The oil-paper insulation detection device according to claim 2, characterized in that: A rotating disk is arranged at one end of the adjusting screw away from the connecting block.

6. The oil-paper insulation detection device according to claim 1, characterized in that: The measuring electrode is fixed on the bottom wall of the box body, and the high-voltage electrode is fixedly connected to the guide rod.

7. The oil-paper insulation detection device according to claim 1, characterized in that: The oil-paper insulation detection device comprises a protection electrode, and the protection electrode is connected to the measuring electrode.

8. The oil-paper insulation detection device according to claim 1, characterized in that: The oil-paper insulation detection device comprises an oil filling valve and an oil drain valve, the box body has a top wall and a bottom wall opposite to each other, the oil filling valve is arranged on the top wall and communicated with the measuring cavity, and the oil drain valve is arranged on the bottom wall and communicated with the measuring cavity.

9. The oil-paper insulation detection device according to claim 8, characterized in that: The oil-paper insulation detection device comprises a temperature sensor, which is arranged in the measuring cavity and fixed to the bottom wall, so as to measure the temperature of the insulating oil in the measuring cavity.

10. The oil-paper insulation detection device according to claim 1, characterized in that: The oil-paper insulation detection device comprises a plurality of supports, which are fixed to the bottom wall of the box body to support the box body.

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