Search

CN-122016195-A - Transformer butterfly valve oil seepage monitoring device and working method

CN122016195ACN 122016195 ACN122016195 ACN 122016195ACN-122016195-A

Abstract

The invention provides a transformer butterfly valve oil seepage monitoring device and a working method thereof, which relate to the technical field of on-line monitoring of power equipment, the device comprises a field acquisition unit and a remote control analysis unit, the on-site acquisition unit gathers oil seepage through an oil collecting funnel to form oil drops, and a photoelectric counting sensor is utilized to non-contact detect the oil drops and generate a pulse signal; the remote control analysis unit receives the pulse signal, calculates the oil seepage rate and the accumulated oil quantity, and performs early warning and remote communication. The invention realizes real-time, automatic and quantitative monitoring and accurate early warning of the oil seepage state of the butterfly valve of the transformer, effectively solves the problems that the traditional manual inspection and simple sensor cannot quantitatively analyze, is easy to interfere and has lagged response, and provides a reliable technical means for the state maintenance and intelligent operation and maintenance of the power equipment.

Inventors

  • ZHANG JINGMIN
  • YANG KUN
  • AN MENG
  • ZOU CHONG
  • GAO TAO
  • WANG ZHEN
  • LIU LINKANG
  • ZENG SURU
  • LIU LINXU
  • WANG MENG
  • YAN JINGRUI
  • ZHU ANG

Assignees

  • 国网山东省电力公司微山县供电公司
  • 山东济宁圣地电业集团有限公司微山电力安装分公司

Dates

Publication Date
20260512
Application Date
20260206

Claims (10)

  1. 1. The utility model provides a transformer butterfly valve oil seepage monitoring device which characterized in that includes: The device comprises a field collection unit, a photoelectric counting sensor assembly (4) and an oil collecting bottle (5), wherein the field collection unit is used for receiving and converging oil seepage and detecting, the oil collecting funnel (2) is used for collecting and guiding insulating oil seeped from a butterfly valve to form oil drops at an outlet, the photoelectric counting sensor assembly (4) is arranged below the outlet of the oil collecting funnel (2) and used for non-contact detection of the dropped oil drops and generation of pulse signals, and the oil collecting bottle (5) is arranged below the photoelectric counting sensor assembly (4) and used for collecting the oil drops; The remote control analysis unit comprises a control panel (7) and a signal transmission line (8), wherein the control panel (7) is connected with the photoelectric counting sensor assembly (4) through the signal transmission line (8) and is used for receiving the pulse signals, calculating the oil seepage rate and/or the accumulated oil seepage quantity based on the pulse signals and carrying out early warning and remote data communication.
  2. 2. The transformer butterfly valve oil leakage monitoring device according to claim 1, wherein the on-site collection unit further comprises a funnel protection cover (1), and the funnel protection cover (1) covers the upper portion of the oil collection funnel (2) and is used for preventing rainwater and dust from entering.
  3. 3. The transformer butterfly valve oil seepage monitoring device according to claim 2, wherein the funnel protection cover (1) is of a split type structure formed by symmetrically splicing double half covers, screw holes for butt joint fixation are formed in the edges of the covers, and a sealing structure is arranged at the butt joint edges.
  4. 4. The transformer butterfly valve oil seepage monitoring device according to claim 2, wherein an operation hole (13) is formed in the top of the funnel protection cover (1), a detachable butterfly rod operation cap (3) is arranged in a matched mode, and the operation hole (13) is used for allowing a butterfly rod (15) of a transformer to pass through.
  5. 5. The transformer butterfly valve oil leakage monitoring device according to claim 1, wherein the inner cavity of the oil collecting funnel (2) is provided with an inclined diversion trench, and the tail end of the diversion trench is converged at the oil leakage hole (14) at the bottom.
  6. 6. The transformer butterfly valve oil seepage monitoring device according to claim 1, wherein the photoelectric counting sensor assembly (4) comprises a U-shaped photoelectric sensor, a transmitting end and a receiving end of the U-shaped photoelectric sensor are arranged opposite to each other to form a detection light path, and oil drops block infrared light and trigger pulse signals when passing through the detection light path.
  7. 7. The oil seepage monitoring device for a butterfly valve of a transformer according to claim 6, wherein the on-site acquisition unit further comprises a sensor mounting clamp, and the sensor mounting clamp comprises an upper clamping ring for clamping an outlet of the oil collecting funnel (2), a lower spiral ring for clamping a bottleneck of the oil collecting bottle (5), and a clamping groove for fixing the U-shaped photoelectric sensor.
  8. 8. The transformer butterfly valve oil seepage monitoring device according to claim 1, wherein the on-site collection unit further comprises a first support (11) and a second support (12), the upper surfaces of the first support (11) and the second support (12) are arc surfaces matched with the outer contour of a horizontal cylinder of the butterfly valve (16), the arc surfaces are clamped with the outer surface of the cylinder, a first cross beam (9) is arranged on the first support (11), a second cross beam (10) is arranged on the second support (12), the first cross beam (9) and the second cross beam (10) are arranged opposite to each other, and the bottom of the oil collecting funnel (2) is supported on the first cross beam (9) and the second cross beam (10).
  9. 9. The transformer butterfly valve oil seepage monitoring device according to claim 1, wherein the control panel (7) is integrated with an internet of things wireless communication module, and is used for sending oil seepage data, early warning information and equipment states to a remote monitoring platform.
  10. 10. A method of operating a transformer butterfly valve oil leakage monitoring device as claimed in any one of claims 1 to 9, comprising the steps of: insulating oil oozing from a butterfly valve of the transformer is received and gathered through an oil collecting funnel (2), so that oil drops are formed at an outlet of the funnel; The oil drops fall and pass through the detection area of the photoelectric counting sensor assembly (4), and the sensor detects an oil drop passing event and generates a corresponding pulse signal; The pulse signals are transmitted to a remote control panel (7) through a signal transmission line (8); the control panel (7) receives and records the pulse signals, obtains the real-time oil seepage rate by calculating the time interval of the adjacent pulse signals, and obtains the accumulated oil seepage amount by accumulating the quantity of the pulse signals; the control panel (7) compares the real-time oil seepage rate and/or the accumulated oil seepage quantity with a preset threshold value, and when the real-time oil seepage rate and/or the accumulated oil seepage quantity exceed the threshold value, early warning information is generated and sent out; The control panel (7) sends the oil seepage data and the early warning information to the remote monitoring platform through the wireless communication module.

Description

Transformer butterfly valve oil seepage monitoring device and working method Technical Field The invention relates to the technical field of online monitoring of power equipment, in particular to a transformer butterfly valve oil seepage monitoring device and a working method. Background The transformer is the core equipment of the power grid, and the inside of the transformer is filled with insulating oil with insulating and heat-dissipating functions. The butterfly valve is used as a key component for communicating or cutting off an oil path on the transformer, and the sealing rubber pad is a high-incidence part of oil leakage faults due to long-term bearing of oil pressure, temperature change, mechanical vibration, aging of sealing materials and the like. At present, the problem of oil leakage of a butterfly valve of a transformer is common, and the butterfly valve becomes an important hidden danger for threatening the safe and stable operation of a power grid. The oil leakage can cause a series of serious problems such as reduced insulating strength, fire hazard, environmental pollution, accelerated equipment aging and the like. If the oil leakage of the butterfly valve of the transformer cannot be found and processed in time, equipment faults and even power grid accidents can be possibly caused, so that the real-time, accurate and quantitative monitoring of the oil leakage of the butterfly valve of the transformer is realized, and the method is a key technical problem to be solved urgently in the field of operation and maintenance of power equipment. In the prior art, the monitoring of oil leakage of a butterfly valve of a transformer mainly depends on manual regular inspection and a simple fixed-point oil-immersed sensor. The manual inspection has inherent defects of strong subjectivity, poor timeliness, high cost and the like, and is difficult to realize timely discovery of early-stage and micro-leakage, so that the problem of oil leakage is often perceived after the problem is developed into a serious defect. The fixed-point sensor is single in function, can only provide switching value alarm, is easily interfered by environments such as rainwater and dust, cannot realize quantitative analysis of key parameters such as oil seepage rate and accumulated oil quantity, cannot meet the requirements of accurately classifying leakage oil defects, predicting trend and intelligently pre-warning, and is difficult to fundamentally solve the problems of reliability, accuracy and instantaneity of leakage oil monitoring. Disclosure of Invention In order to solve the technical problems of poor reliability, incapability of quantitative analysis and early warning hysteresis of oil leakage monitoring in the background art, the invention provides a butterfly valve oil leakage monitoring device of a transformer and a working method thereof, wherein an on-site acquisition unit and a remote control analysis unit are arranged to be matched with each other, an oil collecting funnel is utilized to collect oil leakage to form oil drops, the photoelectric counting sensor is used for non-contact detection of oil drops and generation of pulse signals, and the remote control analysis unit is used for processing the pulse signals to quantitatively calculate oil seepage parameters and perform early warning. The first aspect of the invention provides a transformer butterfly valve oil seepage monitoring device, comprising: The device comprises a field collection unit, a photoelectric counting sensor assembly, an oil collection bottle, a pulse signal generation unit and a control unit, wherein the field collection unit is used for receiving and converging oil seepage and detecting, and comprises an oil collection funnel, the photoelectric counting sensor assembly and the oil collection bottle, the oil collection funnel is used for collecting and guiding insulating oil seeped from a butterfly valve to form oil drops at an outlet; The remote control analysis unit comprises a control panel and a signal transmission line, wherein the control panel is connected with the photoelectric counting sensor assembly through the signal transmission line and is used for receiving the pulse signals, calculating oil seepage rate and/or accumulated oil seepage quantity based on the pulse signals and carrying out early warning and remote data communication. Further, the on-site collection unit further comprises a funnel protection cover, wherein the funnel protection cover covers the upper portion of the oil collecting funnel and is used for preventing rainwater and dust from entering. Further, the funnel protection casing is split type structure of two half cover body symmetry concatenation, and cover body edge is provided with the screw that is used for the butt joint to fix, and is provided with seal structure at the butt joint border. Further, an operation hole is formed in the top of the funnel protective cover and is matched with a detachable but