Rapid detection device for mobile distribution transformer

Abstract

The invention discloses a rapid detection device for a mobile distribution transformer, and relates to the technical field of transformer detection. Comprising an electric breakdown test piece, an oil immersion control piece is installed on the electric breakdown test piece, and the oil immersion control piece is used for controlling the detection oil level; the electric breakdown test piece is provided with two electrifying electrode column pieces; the two energized pole members are used for testing the breakdown-resistant performance of oil of the transformer; the electric breakdown test piece is provided with a cleaning piece; the bottom of the electric breakdown test piece is provided with a cleaning control piece; the electrified electrode column piece can be matched with an oil immersion control piece, the height of the liquid level of oil is controlled, and it is ensured that the liquid level of transformer oil in the oil cup can meet the anti-breakdown detection requirement; the problems that a detachable oil cup of an existing movable distribution transformer is not convenient to limit the depth of a test oil level, and a pole is not convenient to clean automatically after oil is added are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer detection, in particular to a mobile power distribution transformer fast detection device. BACKGROUND

[0002] In actual power distribution transformers, oil-immersed transformers are widely used. Transformer oil is the main insulation barrier for live parts such as windings and cores. Its breakdown voltage directly determines whether the equipment can withstand operating voltage stress. A decrease in breakdown voltage can lead to insulation failure of the equipment, causing short circuit or discharge accidents. A transformer oil breakdown voltage tester usually uses a detachable oil cup. Thanks to its small size, flexibility and accurate detection, it is widely used. However, the detachable oil cup of the current mobile power distribution transformer is not convenient to limit the test oil level depth, and the staff may directly detect the breakdown voltage performance due to insufficient oil addition, affecting the detection accuracy. In addition, the pole of the oil cup will produce carbon residue after breakdown occurs, and the staff may forget to clean it during subsequent oil detection, reducing the breakdown voltage performance of the oil. It is not convenient to automatically clean the pole after adding oil. In addition, the traditional detection oil cup usually needs to use a syringe to extract oil and add it, which has poor flexibility and small oil extraction range, affecting the detection accuracy.

[0003] Therefore, we propose a mobile power distribution transformer fast detection device. SUMMARY

[0004] The purpose of the present application is to provide a mobile power distribution transformer fast detection device to solve the problem of the current mobile power distribution transformer detachable oil cup which is not convenient to limit the test oil level depth and not convenient to automatically clean the pole after adding oil.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a mobile power distribution transformer fast detection device, comprising an electric breakdown test piece, an oil immersion control piece is installed on the electric breakdown test piece, and the oil immersion control piece is used to control the detection oil level; two through electrode column pieces are installed on the electric breakdown test piece; the two through electrode column pieces are used to test the breakdown voltage performance of the transformer oil; a cleaning piece is installed on the electric breakdown test piece; a cleaning control piece is installed at the bottom of the electric breakdown test piece; the cleaning control piece is used to control the anti-carbon residue interference; a dead oil isolation piece is installed on the electric breakdown test piece; the dead oil isolation piece is used to isolate the dead oil in the transformer; the electric breakdown test piece comprises an oil cup and an electromagnet, the electromagnet is fixedly installed on the oil cup, and the top of the electromagnet is flush with the top of the oil cup; the oil cup is used to store transformer oil.

[0006] Preferably, the electric breakdown test piece further comprises a stop block, four stop blocks are fixedly installed on the inner side of the oil cup, and a through hole is arranged on the side of the oil cup.

[0007] Preferably, the oil immersion control piece comprises: test cylinders, electrical contact pieces, electrical contact columns, isolation pieces, floating blocks and magnet pieces, four test cylinders are fixedly installed on the oil cup, and the structures of the four test cylinders are the same; two electrical contact pieces are fixedly installed on the inner side of each test cylinder; an electrical contact column is slidably sleeved on the test cylinder; the electrical contact column is aligned with the two electrical contact pieces on the same side; an isolation piece is fixedly installed at the bottom of the electrical contact column and located on the inner side of the test cylinder; a floating block is fixedly installed at the bottom of the isolation piece and located above the stop block; the electrical contact column is made of copper metal; a magnet piece is fixedly installed at the bottom of the floating block and magnetically attracts the stop block.

[0008] Preferably, the electrode column piece comprises: electrode columns, insulation blocks and terminal columns, two electrode columns are fixedly installed on the oil cup, and the end portions of the two electrode columns are provided with a spacing; an insulation block is fixedly installed on each of the two electrode columns; a terminal column is fixedly installed on each of the two insulation blocks; the two terminal columns are used for being lapped on the terminals of the breakdown tester; the two electrode columns are used for testing the anti-breakdown performance of transformer oil; the electrode columns, the two electrical contact pieces and the terminal columns on the same side are sequentially connected in series through copper wires.

[0009] Preferably, the cleaning piece comprises: a cleaning swing rod, cleaning rubber pieces and magnetic iron blocks, the cleaning swing rod is rotatably installed on the inner side of the oil cup; two cleaning rubber pieces are fixedly installed at the end portion of the cleaning swing rod; the two cleaning rubber pieces are used for scraping the end portions of the two electrode columns respectively; the cleaning swing rod is located between the two electrode columns; a magnetic iron block is fixedly installed at the end portion of the cleaning swing rod through a support, and the electromagnet magnetically attracts the magnetic iron block.

[0010] Preferably, the cleaning piece further comprises: a pull-back elastic piece, the pull-back elastic piece is fixedly installed at the bottom of the cleaning swing rod; the other end of the pull-back elastic piece is fixedly installed on the inner side of the oil cup; when the pull-back elastic piece pulls back the cleaning swing rod, the cleaning swing rod does not block the two electrode columns.

[0011] Preferably, the cleaning control piece comprises: a cleaning control elastic piece and a fixed piece, the cleaning control elastic piece is fixedly installed at the bottom of the oil cup; the cleaning control elastic piece is of an elastic structure; the fixed piece is fixedly installed at the bottom of the oil cup; the end portion of the cleaning control elastic piece is used for abutting against the fixed piece; the cleaning control elastic piece, the fixed piece and the electromagnet are connected in series with the battery power supply; the bottom of the cleaning control elastic piece is used for elastically abutting against the upper surface of the breakdown tester.

[0012] Preferably, the dead oil isolation piece comprises: an oil receiving cylinder and an elastic drainage needle, the oil receiving cylinder is slidably inserted into the through hole on the side of the oil cup; the elastic drainage needle is fixedly installed at the end portion of the oil receiving cylinder; the elastic drainage needle is of a hollow structure; the elastic drainage needle is used for being inserted into the transformer oil discharge pipe; through holes are formed at the two sides of the front end of the elastic drainage needle; the elastic drainage needle is of a curved elastic structure.

[0013] Preferably, the dead oil isolation piece comprises: a puncture-proof ball and a closed rubber sleeve, the puncture-proof ball is fixedly installed on the end of the elastic drainage needle, and the puncture-proof ball is used for cleaning the inner wall of the transformer oil discharge pipe; the closed rubber sleeve is fixedly sleeved on the elastic drainage needle; the end of the closed rubber sleeve is a beveled structure; and the closed rubber sleeve is used for sealing the insertion into the transformer oil discharge pipe.

[0014] Preferably, the dead oil isolation piece further comprises: a core needle, the core needle is inserted into the elastic drainage needle, and the core needle is used for closing the elastic drainage needle; the tail of the core needle is provided with a protruding ball; and the core needle penetrates through the oil receiving cylinder.

[0015] Compared with the prior art, the beneficial effects of the present application are: The present application can cooperate with the oil immersion control piece by adopting the live electrode column piece, realize the control of the oil level height, ensure that the liquid level of the transformer oil in the oil cup can meet the anti-breakdown detection requirement, avoid affecting the detection precision, especially for the actual field detection work, avoid the oil in the oil cup being inclined when the breakdown tester is placed unevenly, and also cause the detection data to be inaccurate when the level is not guaranteed, four oil immersion control pieces are used in the structure, the liquid level in the oil cup can be ensured to meet the standard before normal high-voltage test work is performed, otherwise the circuit cannot be normally turned on, and the staff can be directly prompted to adjust the oil level.

[0016] The cleaning piece can be used to clean the carbon residue between the two electrode columns after completing the breakdown test of the transformer oil once, so that the staff can be reminded to clean, the main reasons for the black carbon residue impurities appearing on the surface of the electrode column after the test include arc high-temperature decomposition products deposition, the effect of the two electrode columns is kept clean when new transformer oil is introduced for detection, the tested oil can be poured out and new oil can be normally poured in for detection, and interference is avoided.

[0017] The dead oil isolation piece can facilitate the staff to directly operate and take oil from the inside of the transformer without complicated operation of the syringe, avoid the dead oil in the inner wall of the oil discharge pipe from being discharged in large amount to affect the detection accuracy, the elastic drainage needle is in a curved elastic structure, the comprehensiveness of oil sampling can be improved, the oil quality is more uniform, and the reference significance is higher, the core needle shields the front end of the elastic drainage needle, and prevents a large amount of oil from penetrating into the transformer oil discharge pipe. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the quick detection device of the mobile distribution transformer of the present application; Figure 2 It is a bottom structure schematic view of the quick detection device of the mobile distribution transformer of the present application; Figure 3 It is a fast inspection device internal structure sectional view of a mobile distribution transformer of the present application. Figure 4 It is a structure schematic diagram of an electric breakdown test piece of the present application. Figure 5 It is an internal structure schematic diagram of a through electrode post piece of the present application. Figure 6 It is a structure schematic diagram of a cleaning piece of the present application. Figure 5 It is a structure enlarged view of a C area of the present application. Figure 7 It is a structure schematic diagram of a cleaning piece of the present application. Figure 8 It is a structure enlarged view of a D area of the present application. Figure 7 It is a structure enlarged view of an E area of the present application. Figure 9 Figure 3 Figure 10 It is a structure schematic diagram of a dead oil isolation piece of the present application.

[0019] In the figure: 1, electric breakdown test piece; 101, oil cup; 102, electromagnet; 103, stop block; 2, oil immersion control piece; 201, test cylinder; 202, electric contact piece; 203, electric contact post; 204, isolation piece; 205, floating block; 206, magnet piece; 3, through electrode post piece; 301, electrode post; 302, insulating block; 303, terminal post; 4, cleaning piece; 401, cleaning swing rod; 402, cleaning rubber piece; 403, magnetic iron block; 404, back-pulling elastic piece; 5, cleaning control piece; 501, cleaning control elastic piece; 502, fixed piece; 6, dead oil isolation piece; 601, oil receiving cylinder; 602, elastic drainage needle; 603, anti-puncture ball; 604, closed rubber sleeve; 605, core needle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0021] Embodiment one: please refer to Figures 1 to 10 as shown: ​​The application provides a technical scheme: a quick detection device of a mobile power distribution transformer, which comprises an electric breakdown test piece 1, an oil immersion control piece 2 is installed on the electric breakdown test piece 1, and the oil immersion control piece 2 is used for controlling the detection oil level; two through electrode column pieces 3 are installed on the electric breakdown test piece 1; the two through electrode column pieces 3 are used for testing the breakdown resistance of transformer oil; a cleaning piece 4 is installed on the electric breakdown test piece 1; a cleaning control piece 5 is installed at the bottom of the electric breakdown test piece 1; the cleaning control piece 5 is used for controlling the anti-carbon residue interference; a dead oil isolation piece 6 is installed on the electric breakdown test piece 1; the dead oil isolation piece 6 is used for isolating the dead oil in the transformer; the electric breakdown test piece 1 comprises an oil cup 101 and an electromagnet 102, the electromagnet 102 is fixedly installed on the oil cup 101, the top of the electromagnet 102 is flush with the top of the oil cup 101, and the oil cup 101 is used for storing transformer oil.

[0022] The electric breakdown test piece 1 further comprises: four stop blocks 103, which are fixedly installed on the inner side of the oil cup 101; and a through hole is arranged on the side of the oil cup 101; the oil immersion control piece 2 comprises: four test cylinders 201, which are fixedly installed on the oil cup 101 and have the same structure; two electric contact pieces 202, which are fixedly installed on the inner side of each test cylinder 201; an electric contact column 203, which is slidably sleeved on the test cylinder 201; an isolation piece 204, which is fixedly installed at the bottom of the electric contact column 203 and located on the inner side of the test cylinder 201; a floating block 205, which is fixedly installed at the bottom of the isolation piece 204 and located above the stop block 103; and a magnet piece 206, which is fixedly installed at the bottom of the floating block 205 and magnetically attracts the stop block 103; the electric contact column 203 is made of copper; the cross-sectional area of the electric contact piece 202 meets the requirement of the breakdown test voltage; the electric pole column piece 3 comprises: two pole columns 301, which are fixedly installed on the oil cup 101 and have a spacing at the end portions; two insulation blocks 302, which are fixedly installed on the two pole columns 301; and two terminal columns 303, which are fixedly installed on the two insulation blocks 302 and used for being lapped on the terminals of the breakdown tester; the two pole columns 301 are used for testing the anti-breakdown performance of the transformer oil; the pole column 301, the two electric contact pieces 202 and the terminal column 303 on the same side are sequentially connected through copper wires in series.Copper as a good conductor, in ideal conditions can carry any voltage, breakdown risk only exists between the electrodes, that is, two pole 301 between the insulating medium, namely transformer oil, which is the reason that the current breakdown tester pole is usually small diameter, pole 301 edge chamfer, used to avoid the concentration of electric field, using the electrode pole piece 3 can cooperate with oil immersion control piece 2, realize the control oil level, ensure that the transformer oil in the oil cup 101 inside the liquid level can meet the anti-breakdown detection requirements, avoid affecting the detection accuracy, especially for the actual work in the field of detection, to avoid the breakdown tester placed unevenly, caused by the oil cup 101 in the oil liquid skew, can not guarantee the horizontal also will cause the detection data inaccurate problem, the structure of the four oil immersion control piece 2, can ensure that the liquid level in the oil cup 101 inside meets the standard after normal high voltage test work, otherwise the circuit can not be normally turned on, can be very direct prompt staff to adjust the oil level, the structure is more reasonable, avoid record error data, if the liquid level is not up to standard or breakdown tester itself skew placed, at this time four float 205 not at the same level, part of the float 205 can not be buoyancy to promote the work of the upper part of the electricity, if the contact piece 202 and the contact column 203 separate, at this time the corresponding side series of pole 301 and terminal column 303 can not be turned on, can not normally conductive breakdown detection, using the magnet piece 206 can ensure that when the buoyancy is enough to make the float 205 normally move up, prevent false connection problem, the structure is more reasonable, ensure that in the guarantee detection needs of the liquid level standard, prevent excessive waste transformer oil, also can avoid staff illegal operation to add oil too little, in the subsequent breakdown caused by security incidents, the structure is more safe and reasonable.

[0023] The cleaning part 4 comprises a cleaning swing rod 401, cleaning rubber sheets 402 and a magnetic iron block 403, the cleaning swing rod 401 is rotatably arranged in the oil cup 101, two cleaning rubber sheets 402 are fixedly arranged at the end of the cleaning swing rod 401, the two cleaning rubber sheets 402 are respectively used for scraping the end of the two pole columns 301, the cleaning swing rod 401 is located between the two pole columns 301, the magnetic iron block 403 is fixedly arranged at the end of the cleaning swing rod 401 through a support, and the electromagnet 102 magnetically attracts the magnetic iron block 403, the cleaning part 4 further comprises a pull-back elastic sheet 404, the pull-back elastic sheet 404 is fixedly arranged at the bottom of the cleaning swing rod 401, the other end of the pull-back elastic sheet 404 is fixedly arranged in the oil cup 101, when the pull-back elastic sheet 404 pulls back the cleaning swing rod 401, the cleaning swing rod 401 does not block the two pole columns 301, the cleaning control part 5 comprises a cleaning control elastic sheet 501 and a fixed sheet 502, the cleaning control elastic sheet 501 is fixedly arranged at the bottom of the oil cup 101, the cleaning control elastic sheet 501 is of an elastic structure, the fixed sheet 502 is fixedly arranged at the bottom of the oil cup 101, the end of the cleaning control elastic sheet 501 is used for abutting against the fixed sheet 502, the cleaning control elastic sheet 501, the fixed sheet 502 and the electromagnet 102 are connected in series with a battery power supply, the bottom of the cleaning control elastic sheet 501 is used for elastically abutting against the upper surface of the breakdown tester, the cleaning part 4 can be used for cleaning the carbon residue between the two pole columns 301 in time after completing the breakdown test of the transformer oil, the carbon residue between the two pole columns 301 can be cleaned in time, the staff can be prevented from forgetting to clean, the main reasons for the black carbon residue impurities appearing on the surface of the pole column of the breakdown tester after the test include arc high-temperature decomposition products deposition, oil pollution migration and electrode material oxidation corrosion, the structure can realize automatic cleaning control, ensure that the two pole columns 301 are clean when new transformer oil is introduced for detection, the oil after the test is completed can be normally poured out to pour in new oil for detection, interference can be avoided, the structure is more reasonable, the staff does not need to worry about forgetting, the carbon residue between the two pole columns 301 can be prevented from interfering with the detection result, when the oil cup 101 is removed after the detection of the breakdown resistance is completed, the cleaning control elastic sheet 501 can be elastically pressed down and abut against the fixed sheet 502, at this time, the electromagnet 102 is powered on, the magnetic iron block 403 is magnetically attracted, at this time, the pull-back elastic sheet 404 is elongated, the magnetic iron block 403 drives the cleaning swing rod 401 to rotate upward, and the cleaning rubber sheets 402 scrape the end of the pole column 301.

[0024] In the embodiment two, on the basis of the embodiment one, the dead oil isolation piece 6 comprises: an oil receiving cylinder 601 and an elastic drainage needle 602, the oil receiving cylinder 601 is slidingly inserted into the through hole on the side of the oil cup 101; the elastic drainage needle 602 is fixedly installed on the end of the oil receiving cylinder 601; the elastic drainage needle 602 is a hollow structure; the elastic drainage needle 602 is used for inserting into the transformer oil discharge pipe; the elastic drainage needle 602 is provided with through holes on both sides of the front end; the elastic drainage needle 602 is a curved elastic structure; the dead oil isolation piece 6 comprises: a puncture prevention ball 603 and a closed rubber sleeve 604, the puncture prevention ball 603 is fixedly installed on the end of the elastic drainage needle 602, and the puncture prevention ball 603 is used for cleaning the inner wall of the transformer oil discharge pipe; the closed rubber sleeve 604 is fixedly sleeved on the elastic drainage needle 602; the end of the closed rubber sleeve 604 is a bevel structure; the closed rubber sleeve 604 is used for sealing the inserted transformer oil discharge pipe; the puncture prevention ball 603 is used for preventing the sharp end of the elastic drainage needle 602 from injuring the staff; the dead oil isolation piece 6 further comprises: a core needle 605, the core needle 605 is inserted into the elastic drainage needle 602, and the core needle 605 is used for closing the elastic drainage needle 602; the core needle 605 is provided with a protruding ball at the tail; the core needle 605 penetrates through the oil receiving cylinder 601; by using the dead oil isolation piece 6, the staff can directly operate and take oil into the transformer, without complicated operation of the syringe, so as to avoid that the dead oil in the inner wall of the oil discharge pipe is discharged in a large amount and affects the detection accuracy; at the same time, by using the curved elastic structure of the elastic drainage needle 602, the comprehensiveness of the oil sampling can be improved, the oil quality is more uniform, and it has more reference significance; by using the core needle 605 to shield the front end of the elastic drainage needle 602, the oil in the transformer oil discharge pipe can be further prevented from penetrating into the elastic drainage needle 602 when the elastic drainage needle 602 is inserted; the oil receiving cylinder 601 is manually rotated to drive the elastic drainage needle 602 to rotate, so that the end thereof adjusts the oil discharge position, and the sampling range is increased.

[0025] The working principle of the embodiment is as follows: first, when the oil needs to be taken for rapid detection, the oil receiving cylinder 601 is inserted into the oil cup 101, the end cover at the end of the oil discharge pipe is removed, and then the elastic drainage needle 602 is inserted into the oil discharge pipe. As the elastic drainage needle 602 is inserted, the closed rubber sleeve 604 is also attached to the inner wall of the oil discharge pipe for close sealing. Then the core needle 605 can be pulled out, the through hole at the end of the elastic drainage needle 602 is no longer blocked, and the oil can be discharged. The oil flows through the oil receiving cylinder 601 and is then received by the oil cup 101. The oil receiving cylinder 601 can be rotated to drive the elastic drainage needle 602 to rotate, so that the end of the elastic drainage needle 602 adjusts the oil discharge position to increase the sampling range. When the oil level in the oil cup 101 meets the standard, the elastic drainage needle 602 can be pulled out, the end cover at the end of the transformer oil discharge pipe is installed and closed, and the sampling work is completed. If the oil needs to be discharged again, the above operation can be performed. After adding transformer oil in the oil cup 101, the oil cup 101 can be quickly placed on the breakdown tester. The two terminal columns 303 are used to be connected to the two terminals of the breakdown tester. When the liquid level in the oil cup 101 meets the standard and the breakdown tester is placed horizontally, the buoyancy of the oil is greater than the magnetic force of the magnet sheet 206, the magnet sheet 206 is separated from the stop block 103, and the oil can push the float 205 to move upward to drive the power receiving column 203 and the power receiving sheet 202 to be attached to the power receiving column 203. Conversely, if the liquid level does not meet the standard or the breakdown tester is placed obliquely, the four floats 205 are not at the same horizontal height, the area with low oil level also has low or no buoyancy, and part of the floats 205 cannot be pushed upward by the buoyancy to perform the power receiving work. If the power receiving sheet 202 and the power receiving column 203 are separated, the corresponding polar column 301 and terminal column 303 cannot be connected, and the breakdown detection cannot be normally conducted. It is necessary to ensure that the oil level meets the standard, and after the oil cup 101 is placed on the breakdown tester to detect the anti-breakdown performance, the oil cup 101 is removed. The cleaning control spring 501 can be elastically pressed and fixed to the fixed sheet 502. At this time, the electromagnet 102 is energized, the magnetic force attracts the magnetic iron block 403, the pull-back spring 404 is stretched, and the magnetic iron block 403 drives the cleaning swing rod 401 to rotate upward. The cleaning rubber sheet 402 scrapes the end of the polar column 301. After the oil in the oil cup 101 is poured out, in order to improve the detection accuracy, multiple tests are usually required to take the average value, and new oil is introduced for the next detection. When the oil cup 101 is placed on the breakdown tester for detection, the weight of the oil cup 101 is considered. At this time, the cleaning control spring 501 is stopped by the surface of the breakdown tester, and the cleaning control spring 501 can move upward and separate from the fixed sheet 502. At this time, the electromagnet 102 is de-energized, and the cleaning swing rod 401 is recovered under the pull of the pull-back spring 404. The cleaning swing rod 401 scrapes the polar column 301 again, and the cleaning swing rod 401 does not block the polar column 301 after retraction. The control breakdown tester is started to record the breakdown voltage to reflect the anti-breakdown performance of the transformer oil.

[0026] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve to identify a subject or action, without necessarily requiring or implying any such actual relationship or order between such subjects or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0027] While embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, combinations, and variations of the embodiments can be undertaken without departing from the spirit and scope of the present application, which is defined by the appended claims and their equivalents.

Claims

1. A quick detection device for mobile power distribution transformer, comprising an electric breakdown test piece (1), an oil immersion control piece (2) is installed on the electric breakdown test piece (1), characterized in that: The oil immersion control piece (2) is used for controlling detection oil level; two through electrode column pieces (3) are installed on the electric breakdown test piece (1); the two through electrode column pieces (3) are used for testing transformer oil liquid anti-breakdown performance; The electric breakdown test piece (1) is provided with a cleaning piece (4); the electric breakdown test piece (1) is provided with a cleaning control piece (5) at the bottom; the cleaning control piece (5) is used for controlling anti-carbon residue interference; The electric breakdown test piece (1) is provided with a dead oil isolation piece (6); the dead oil isolation piece (6) is used for isolating dead oil in the transformer; The electric breakdown test piece (1) comprises an oil cup (101) and an electromagnet (102), the electromagnet (102) is fixedly installed on the oil cup (101), and the top of the electromagnet (102) is flush with the top of the oil cup (101); the oil cup (101) is used for storing transformer oil.

2. A mobile power distribution transformer quick detection device according to claim 1, characterized in that: The electric breakdown test piece (1) further comprises a stop block (103), four stop blocks (103) are fixedly installed on the inner side of the oil cup (101); the oil cup (101) is provided with a through hole in the side.

3. A mobile power distribution transformer quick detection device according to claim 2, characterized in that: The oil immersion control piece (2) comprises a test cylinder (201), an electricity contact piece (202), an electricity contact column (203), an isolation piece (204), a floating block (205) and a magnet piece (206), four test cylinders (201) are fixedly installed on the oil cup (101), and the structures of the four test cylinders (201) are the same; two electricity contact pieces (202) are fixedly installed on the inner side of each test cylinder (201); an electricity contact column (203) is slidably sleeved on the test cylinder (201); the electricity contact column (203) is aligned with the two electricity contact pieces (202) on the same side; the isolation piece (204) is fixedly installed at the bottom of the electricity contact column (203) and located on the inner side of the test cylinder (201); the floating block (205) is fixedly installed at the bottom of the isolation piece (204) and located above the stop block (103); the electricity contact column (203) is made of copper metal; the magnet piece (206) is fixedly installed at the bottom of the floating block (205) and magnetically attracts the stop block (103).

4. A mobile power distribution transformer quick detection device according to claim 3, characterized in that: The through electrode column piece (3) comprises a pole column (301), an insulation block (302) and a terminal column (303), two pole columns (301) are fixedly installed on the oil cup (101), and the end portions of the two pole columns (301) are provided with a spacing; an insulation block (302) is fixedly installed on each of the two pole columns (301); a terminal column (303) is fixedly installed on each of the two insulation blocks (302); the two terminal columns (303) are used for being lapped on the terminals of the breakdown tester; the two pole columns (301) are used for testing transformer oil anti-breakdown performance; the pole column (301), the two electricity contact pieces (202) and the terminal column (303) on the same side are sequentially connected in series through copper wires.

5. A mobile power distribution transformer quick detection device according to claim 4, characterized in that: The cleaning piece (4) comprises a cleaning swing rod (401), a cleaning rubber sheet (402) and a magnetic iron block (403), the cleaning swing rod (401) is rotatably arranged in the oil cup (101); two cleaning rubber sheets (402) are fixedly arranged at the ends of the cleaning swing rod (401); the two cleaning rubber sheets (402) are respectively used for scraping the ends of the two pole columns (301); the cleaning swing rod (401) is located between the two pole columns (301); the magnetic iron block (403) is fixedly arranged at the end of the cleaning swing rod (401) through a support, and the magnetic iron block (403) is magnetically attracted by the electromagnet (102).

6. A mobile power distribution transformer quick detection device according to claim 5, characterized in that: The cleaning piece (4) further comprises a pull-back elastic sheet (404), the pull-back elastic sheet (404) is fixedly arranged at the bottom of the cleaning swing rod (401), the other end of the pull-back elastic sheet (404) is fixedly arranged in the oil cup (101), and the pull-back elastic sheet (404) does not block the two pole columns (301) when pulling back the cleaning swing rod (401).

7. A mobile power distribution transformer quick detection device according to claim 1, characterized in that: The cleaning control piece (5) comprises a cleaning control elastic sheet (501) and a fixed sheet (502), the cleaning control elastic sheet (501) is fixedly arranged at the bottom of the oil cup (101), the cleaning control elastic sheet (501) is of an elastic structure, the fixed sheet (502) is fixedly arranged at the bottom of the oil cup (101), the end of the cleaning control elastic sheet (501) is used for abutting against the fixed sheet (502), the cleaning control elastic sheet (501), the fixed sheet (502) and the electromagnet (102) are connected in series with a battery power supply, and the bottom of the cleaning control elastic sheet (501) is used for elastically abutting against the upper surface of the puncture tester.

8. A mobile power distribution transformer quick detection device according to claim 1, characterized in that: The dead oil isolation piece (6) comprises an oil receiving cylinder (601) and an elastic drainage needle (602), the oil receiving cylinder (601) is slidingly inserted into a through hole in the side of the oil cup (101), the elastic drainage needle (602) is fixedly arranged at the end of the oil receiving cylinder (601), the elastic drainage needle (602) is of a hollow structure, the elastic drainage needle (602) is used for being inserted into a transformer oil discharge pipe, through holes are respectively arranged at the two sides of the front end of the elastic drainage needle (602), and the elastic drainage needle (602) is of a curved elastic structure.

9. A mobile power distribution transformer quick detection device according to claim 8, characterized in that: The dead oil isolation piece (6) comprises a puncture-preventing ball (603) and a closed rubber sleeve (604), the puncture-preventing ball (603) is fixedly arranged at the end of the elastic drainage needle (602) and is used for cleaning the inner wall of the transformer oil discharge pipe, the closed rubber sleeve (604) is fixedly sleeved on the elastic drainage needle (602), the end of the closed rubber sleeve (604) is of an inclined surface structure, and the closed rubber sleeve (604) is used for sealing the transformer oil discharge pipe.

10. A mobile power distribution transformer quick detection device according to claim 9, characterized in that: The dead oil isolation piece (6) further comprises a core needle (605), the core needle (605) is inserted into the elastic drainage needle (602), and the core needle (605) is used for sealing the elastic drainage needle (602), a protruding ball is arranged at the tail of the core needle (605), and the core needle (605) penetrates through the oil receiving cylinder (601).

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