CN-122026242-A - Magnetic type safe high-hanging low-use device for transformer maintenance

Abstract

The invention discloses a magnetic type safe high-hanging low-use device for transformer maintenance, and relates to the technical field of transformer maintenance. In the process of overhauling the transformer, the reliability of a magnetic anchorage point is improved through the magnetic overhauling mechanism, after the magnetic overhauling mechanism is adsorbed on the top of the transformer, the built-in adsorption force sensing device of the magnetic overhauling mechanism can monitor normal adsorption force in real time and accurately identify two types of risks, namely adsorption force attenuation caused by reduction of effective contact area due to an oil film or an aged paint layer, and local suspension and uneven pressure distribution caused by an arc-shaped curved surface of the top of the transformer can detect stress differences of all areas so as to judge whether the risk of inclined adsorption or poor contact exists or not, so that high-altitude falling accidents caused by adsorption failure are avoided from the source, and the magnetic overhauling mechanism is suitable for old equipment or complex surface working conditions.

Inventors

• ZHANG XIAOLONG
• CHEN LUQIAO
• YE XIAOFENG
• ZHANG BIN
• RAN QIONG
• WANG CHENG
• WU ZHAOYUN
• WANG ZHIJUN
• ZHANG JIANFEI
• TONG JIANFENG
• JU HONG
• LIU XIONGJUN
• ZOU TONG
• LI KAIJI
• WANG DILIANG
• YIN ZHENG
• YE QING
• WANG GANG
• DING WEI
• LEI DA
• WANG JIANBIN
• ZHANG JIANZENG

Assignees

• 衢州光明电力工程有限公司

Dates

Publication Date

20260512

Application Date

20260316

Claims (10)

1. 1. The magnetic type safe high-hanging low-use device for overhauling the transformer comprises a shaft connector (7) and is characterized in that three tension buffer mechanisms (3) distributed in an annular array are arranged on the outer surface of the shaft connector (7), and a magnetic type overhauling mechanism (1) is arranged at the bottom of the tension buffer mechanisms (3) and used for being adsorbed on a transformer shell and detecting magnetic attraction in real time; the upper end of the shaft connector (7) is provided with an overhaul device (5), and the upper ends of the overhaul device (5) and the tension buffer mechanism (3) are jointly provided with an overhaul monitoring mechanism (2) for providing an early warning mechanism when the safety rope is overloaded by force; the inside of the shaft connector (7) is provided with a UHF partial discharge overhaul mechanism (4) for detecting partial discharge signals in the transformer.
2. 2. The magnetic safe high-hanging low-using device for transformer overhaul according to claim 1, wherein the UHF partial discharge overhaul mechanism (4) comprises a second support rod (42), an adapter ring (40) is arranged at the lower end of the second support rod (42), three connecting rods (43) distributed in annular arrays are rotatably arranged on the outer surface of the adapter ring (40), one end of the second support rod (42) penetrates through the shaft connector (7) and the overhaul device (5), a collar (46) is arranged at the upper end of the second support rod (42), and a joint (41) is rotatably arranged on the outer surface of the collar (46).
3. 3. The magnetic safe high-hanging low-hanging device for transformer overhaul according to claim 2, wherein an inner groove (47) is formed in the second supporting rod (42), an extension rod (44) is slidably mounted in the inner groove (47), an adsorption disc (45) is arranged at the lower end of the extension rod (44), and a connecting wire (48) electrically connected with the overhaul device (5) is arranged at the upper end of the extension rod (44).
4. 4. The magnetic safe high-hanging low-using device for transformer overhaul according to claim 2, wherein the tension buffer mechanism (3) comprises a first supporting rod (31), one end of the first supporting rod (31) is rotatably mounted on the outer surface of the shaft connector (7), a round rod (35) is arranged in the first supporting rod (31), a sliding block (34) is slidably mounted on the outer surface of the round rod (35), a spring (36) is sleeved on one side of the sliding block (34) on the outer surface of the round rod (35), a connecting block (32) is arranged at the upper end of the sliding block (34), two connecting rods (33) are rotatably mounted at the upper end of the connecting block (32), and one end of each connecting rod (43) is rotatably mounted on the inner wall of the first supporting rod (31).
5. 5. The magnetic safe high-hanging low-hanging device for transformer overhaul as claimed in claim 4, wherein the connecting rod (33) and the connecting block (32) are rotatably connected through a ball shaft, and the first supporting rod (31) and the connecting rod (33) are made of light alloy aluminum materials.
6. 6. The magnetic safe high-hanging low-using device for transformer overhaul according to claim 4, wherein the overhaul supervision mechanism (2) comprises a support ring (21), three installation blocks (22) distributed in an annular array are arranged on the outer surface of the support ring (21), ball shafts are respectively arranged on two sides of the installation blocks (22), the installation blocks (22) are rotatably connected with one end of a connecting shaft rod (33) through the ball shafts, and three clamping rings (23) distributed in an annular array are arranged at the upper end of the support ring (21).
7. 7. The magnetic safe high-hanging low-using device for overhauling a transformer according to claim 6, wherein the overhauling supervision mechanism (2) further comprises a top frame (28), three stretching belts (24) distributed in an annular array are arranged at the lower end of the top frame (28), the top frame (28) is fixedly arranged at the upper end of the overhauling device (5), and one ends of the three stretching belts (24) are fixedly arranged on the inner wall of the supporting ring (21).
8. 8. The magnetic safe high-hanging low-hanging device for transformer overhaul according to claim 7, wherein a resistor sleeve (26) is arranged at the upper end of the stretching strap (24), one end of the resistor sleeve (26) is fixedly arranged at the upper end of the stretching strap (24) through a bolt, a resistor piece (29) is slidably arranged in the resistor sleeve (26), a supporting rod (27) is arranged at one end of the resistor piece (29), and one end of the supporting rod (27) is rotatably arranged at one side of a top frame (28).
9. 9. The magnetic safe high-hanging low-hanging device for transformer overhaul according to claim 4, wherein the magnetic overhaul mechanism (1) comprises a magnetic overhaul device (11), the magnetic overhaul device (11) is rotatably arranged at one end of a first supporting rod (31), a rubber ring (12) is arranged at the lower end of the magnetic overhaul device (11), and three mounting shells (14) distributed in a dispersed mode are arranged in the magnetic overhaul device (11).
10. 10. The magnetic safe high-hanging low-hanging device for transformer overhaul according to claim 9, wherein a polyurethane elastomer (15) is arranged on the inner wall of the installation shell (14), a miniature Hall displacement sensor (16) is arranged at the lower end of the polyurethane elastomer (15), and a rubber sleeve (13) is arranged at the lower end of the installation shell (14).

Description

Magnetic type safe high-hanging low-use device for transformer maintenance Technical Field The invention relates to the technical field of transformer overhaul, in particular to a magnetic type safe high-hanging low-use device for transformer overhaul. Background For example, the publication number is CN104348101A, the patent name is an automatic adjusting type transformer maintenance platform and a control method thereof, the platform comprises a standing platform, guardrails, a base, a driving mechanism, a safety belt and a single chip microcomputer control device, a connecting support capable of moving up and down under the control of the driving mechanism is arranged on the standing platform, a high Cheng Chachuan sensor is arranged on the safety belt to measure the height difference between one end of the safety belt hung on the connecting support and the other end sleeved on the maintenance personnel, the input end of the single chip microcomputer control device is connected with the height difference sensor, the output end of the single chip microcomputer control device is connected with the driving mechanism, and the driving mechanism is controlled to drive the connecting support to work according to the height difference measured by the high Cheng Chachuan sensor, so that one end of the safety belt hung on the connecting support is always higher than the other end sleeved on the maintenance personnel. The platform and the control method thereof can automatically adjust the height of the hanging point of the safety belt, ensure that the safety belt is always in a high hanging and low use state, and improve the safety. The existing magnetic attraction device only depends on subjective judgment of 'whether to attract', adsorption force attenuation and uneven contact caused by oil film and paint aging or arc-shaped curved surfaces of a transformer cannot be perceived, and 'virtual attraction' risks exist, meanwhile, the anti-falling system of the patent is mainly connected in a passive mode, real-time early warning and intervention are difficult to conduct on high-risk actions such as instability, jerk or sudden falling of personnel, and in addition, safety hanging points and detection equipment are usually required to be deployed for maintenance operation respectively, the process is complicated, multiple ascending is required, and the efficiency is low. Disclosure of Invention The application aims to provide a magnetic type safe high-hanging low-use device for transformer maintenance, which can effectively solve the problems in the background technology. The magnetic attraction type safe high-hanging low-use device for overhauling the transformer comprises a shaft connector, wherein three tension buffer mechanisms distributed in an annular array are arranged on the outer surface of the shaft connector, and a magnetic attraction overhauling mechanism is arranged at the bottom of the tension buffer mechanism and used for being adsorbed on a transformer shell and detecting magnetic attraction in real time; the upper end of the shaft connector is provided with an overhaul device, and the upper ends of the overhaul device and the tension buffer mechanism are jointly provided with an overhaul monitoring mechanism for providing an early warning mechanism when the safety rope is overloaded; The inside of the shaft connector is provided with a UHF partial discharge maintenance mechanism for detecting partial discharge signals in the transformer. The UHF partial discharge maintenance mechanism comprises a second support rod, the lower end of the second support rod is provided with a switching ring, the outer surface of the switching ring is rotationally provided with three connecting rods distributed in annular arrays, one end of the second support rod penetrates through the shaft connector and the maintenance device, the upper end of the second support rod is provided with a shaft collar, and the outer surface of the shaft collar is rotationally provided with a joint. Wherein, the inside of second bracing piece has been seted up the inside in groove, and the inside slidable mounting in inside groove has the extension rod, and the lower extreme of extension rod is provided with the adsorption disc, and the upper end of extension rod is provided with the connecting wire with overhauling device electric connection. Wherein, pulling force buffer gear includes first bracing piece, and the one end of first bracing piece is rotated and is installed the surface at the coupling spare, and the inside of first bracing piece is provided with the round bar, and the surface slidable mounting of round bar has the slider, and the surface of round bar just is located one side cover of slider and is equipped with the spring, and the upper end of slider is provided with the connecting block, and the upper end of connecting block rotates and installs two connecting rods, and the one end of connecting rod is rotated and is instal