WO2024221816A1 - Dispositif d'aide pour l'entretien de relais à gaz et procédé d'utilisation associé - Google Patents

Dispositif d'aide pour l'entretien de relais à gaz et procédé d'utilisation associé Download PDF

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Publication number
WO2024221816A1
WO2024221816A1 PCT/CN2023/129090 CN2023129090W WO2024221816A1 WO 2024221816 A1 WO2024221816 A1 WO 2024221816A1 CN 2023129090 W CN2023129090 W CN 2023129090W WO 2024221816 A1 WO2024221816 A1 WO 2024221816A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas relay
flexible outer
outer bag
auxiliary device
oil
Prior art date
Application number
PCT/CN2023/129090
Other languages
English (en)
Chinese (zh)
Inventor
张世明
王栩
南江
裴海林
孙改兰
马优
王垚
李�杰
刘增瑞
陈少华
刘诚威
程帅
Original Assignee
西安热工研究院有限公司
华能莱芜发电有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 西安热工研究院有限公司, 华能莱芜发电有限公司 filed Critical 西安热工研究院有限公司
Publication of WO2024221816A1 publication Critical patent/WO2024221816A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Definitions

  • the present invention belongs to the technical field of power station operation and maintenance, and in particular relates to an auxiliary device for gas relay maintenance and a use method thereof.
  • the current regular (abnormal) replacement and maintenance of transformer gas relays has the following problems: the disassembly and reinstallation maintenance process is cumbersome, the flange bolts are not easy to remove, the flange sealing ring is easy to be installed skewed, the transformer oil is exposed to the air for a long time, the transformer oil leaks and pollutes the equipment, and the use of plastic sheets to receive the transformer oil is not safe.
  • There are also problems such as high labor intensity on site, the transformer oil released by the gas relay during the maintenance process is polluted, and the gas relay is taken out for inspection.
  • the normal efficiency of intensive maintenance cannot be maximized. Unnecessary processes cause the maintenance personnel to waste effective working time and increase labor intensity, and increase the safety hazards of on-site work. It does not meet the work requirements of transformer maintenance process safety, environmental protection, high maintenance quality, and short maintenance time.
  • the present invention aims to provide an auxiliary device for gas relay maintenance and its use.
  • the method can effectively solve the problems existing in the on-site maintenance of transformer gas relays, such as multiple work links, high labor intensity, low safety, blind spots in work quality, and poor sealing and oil leakage of connecting flanges caused by disassembly and assembly of gas relays, and provide reliable technical support for the safe, high-quality and efficient completion of on-site maintenance of transformer gas relays.
  • the present invention discloses an auxiliary device for gas relay maintenance, comprising a flexible outer bag and an inner bag; the inner bag is suspended inside the flexible outer bag by an inner bag suspension rope; a thickened edge is provided around the upper opening of the flexible outer bag, and suspension holes are provided on the thickened edges on both sides of the flexible outer bag, the suspension holes are connected with lock buckles, and the lock buckles are connected with suspension ropes; an oil drain pipe is connected to the bottom of the flexible outer bag, and an oil drain valve is provided on the oil drain pipe.
  • a reserved adjustment hole for adjusting the opening size of the flexible outer bag is provided on the thickened edge of the flexible outer bag.
  • the reserved adjustment hole and the hanging hole are both fixed with metal eyelets.
  • the upper opening of the flexible outer bag is rectangular, the hanging holes are arranged on the opposite first and second sides, and the reserved adjustment holes are arranged on the opposite third and fourth sides; the reserved adjustment holes are arranged in pairs, and the spacing between adjacent reserved adjustment holes is equal.
  • a sealing device is provided on the opening of the inner bag.
  • the buckle is a quick-release safety buckle, and/or the suspension rope is a static rope.
  • the oil drain pipe is connected with a quick connector, and the quick connector is detachably connected with an oil drain hose.
  • a high oil level warning mark is provided on the inner wall of the flexible outer bag.
  • the flexible outer bag and the inner bag are both made of TPU mesh fabric.
  • the method for using the auxiliary device for gas relay maintenance disclosed in the present disclosure includes:
  • Install the auxiliary device hang the suspension rope on the pipes on both sides of the gas relay housing, so that the flexible outer bag is located directly below the gas relay housing; close the valves of the main transformer side flange and the oil pillow side flange, connect the oil in the gas relay housing to the flexible outer bag, remove the gas relay top cover and the gas relay actuator inside the gas relay housing, and put them into the inner bag; after inspecting and calibrating the gas relay actuator, install the calibrated gas relay actuator back into the gas relay housing, adjust the sealing ring at the gas relay top cover and install and fix the gas relay top cover on the gas relay housing, and remove the auxiliary device; when the oil in the flexible outer bag exceeds the preset oil level, open the oil drain valve to drain the oil through the oil drain pipe.
  • the present invention has the following beneficial technical effects:
  • the auxiliary device for gas relay maintenance disclosed in the present invention can be conveniently and quickly suspended under the gas relay through a suspension rope, so that the oil connection during the maintenance of the gas relay is safe and reliable, saving time and effort;
  • the flexible outer bag can be suitable for gas relays of different specifications and can also meet any on-site space; and when there is too much oil, it can be discharged at any time through the oil drain pipe;
  • the thickened edge around the upper opening of the flexible outer bag can greatly improve the strength to prevent the flexible outer bag from tearing after being stressed
  • the disassembled parts, spare parts and tools can be stored in the inner bag, which solves the problems of hoisting, transportation protection and placement during high-altitude operations, and achieves the purpose of "one item for multiple uses”.
  • a reserved adjustment hole is provided on the flexible outer bag, so that the volume of the entire auxiliary device and the opening size of the flexible outer bag can be flexibly adjusted according to the size specifications of the gas relay and the size of the on-site operation space, thereby improving applicability.
  • the reserved adjustment hole and the hanging hole are both fixed with metal eyelet buckles, which can increase the strength around the reserved adjustment hole and the hanging hole and prevent the flexible outer bag from being torn by force.
  • the reserved adjustment holes are arranged in pairs on opposite sides of the flexible outer bag, and the spacing between adjacent reserved adjustment holes is equal, so that the flexible outer bag can be evenly stressed.
  • a sealing device is provided on the opening of the inner bag, which can close the opening of the inner bag to store and protect the parts and tools therein.
  • the oil drain pipe is connected with a quick connector, and the quick connector is detachably connected with an oil drain hose, so that the oil can be drained conveniently.
  • a high oil level warning sign is provided on the inner wall of the flexible outer bag, which can promptly remind the operator to drain the oil and avoid excessive oil overflow.
  • the materials of the flexible outer bag and the inner bag are both TPU mesh cloth, which has high strength, oil resistance, and good acid and alkali corrosion resistance.
  • the use method of the auxiliary device for gas relay maintenance disclosed in the present disclosure proposes to achieve the purpose of regular maintenance of gas relays without disassembling gas relays and connecting pipelines.
  • the optimized maintenance process disclosed in the present disclosure reduces the regular maintenance and replacement time of the main transformer gas relay (single) from the current replacement and maintenance of 4 to 5 people for 60 minutes to 120 minutes to 2 to 3 people within 30 minutes, reduces the number of people and working time for high-altitude operations, and reduces the potential hidden dangers of poor sealing and oil leakage caused by disassembling and assembling gas relays and connecting valve flange rings.
  • the gas relay maintenance auxiliary device is fast, reliably fixed, easy to use, and according to the actual oil drainage method, it eliminates the oil dripping and pollution of transformers during work.
  • the process complies with the regulations and countermeasures requirements, greatly reduces the number of people working at heights, reduces the labor intensity of on-site operations, and completes the regular maintenance of gas relays with high quality and high efficiency under the premise of ensuring safety, providing technical support for shortening the transformer maintenance time and the safe and reliable operation of the transformer after maintenance.
  • FIG1 is a schematic diagram of the overall structure of an auxiliary device for gas relay maintenance disclosed in the present invention.
  • FIG. 2 is a schematic diagram of the use status of the auxiliary device for gas relay maintenance disclosed in the present invention.
  • 1 is the gas relay housing
  • 2 is the gas relay actuator
  • 3 is the gas relay top cover
  • 4 is the main transformer Side flange
  • 5 is the oil pillow side flange
  • 6 is the auxiliary device
  • 6-1 is the flexible outer bag
  • 6-2 is the inner bag
  • 6-3 is the thickened edge
  • 6-4 is the reserved adjustment hole
  • 6-5 is the lock buckle
  • 6-6 is the hanging rope
  • 6-7 is the oil drain pipe
  • 6-8 is the oil drain valve
  • 6-9 is the inner bag hanging rope.
  • the auxiliary device for gas relay maintenance disclosed in the present invention includes a flexible outer bag 6-1 and an inner bag 6-2; the inner bag 6-2 is suspended inside the flexible outer bag 6-1 by one or more inner bag suspension ropes 6-9; a thickened edge 6-3 is provided around the upper opening of the flexible outer bag 6-1, and one or more suspension holes are provided on the thickened edges 6-3 on both sides of the flexible outer bag 6-1, and the suspension holes are connected to lock buckles 6-5, and the lock buckles 6-5 are connected to suspension ropes 6-6; an oil drain pipe 6-7 is connected to the bottom of the flexible outer bag 6-1, and an oil drain valve 6-8 is provided on the oil drain pipe 6-7.
  • one or more reserved adjustment holes 6-4 for adjusting the opening size of the flexible outer bag 6-1 are provided on the thickened edge 6-3 of the flexible outer bag 6-1.
  • the reserved adjustment holes 6-4 and the hanging holes are fixed with metal eyelets.
  • the upper opening of the flexible outer bag 6-1 is rectangular, the hanging holes are provided on the opposite first and second sides, and the reserved adjustment holes 6-4 are provided on the opposite third and fourth sides; the reserved adjustment holes 6-4 are provided in pairs, and the spacing between adjacent reserved adjustment holes 6-4 is equal.
  • a sealing device is provided on the opening of the inner bag 6 - 2 .
  • the buckle 6-5 is a quick-release safety buckle
  • the suspension rope 6-6 is a static rope
  • the oil drain pipe 6 - 7 is connected with a quick-connect joint, and the quick-connect joint is detachably connected with an oil drain hose.
  • a high oil level warning sign is provided on the inner wall of the flexible outer bag 6-1.
  • the high oil level warning sign can be marked with fluorescent paint so that the operator can observe it in time even in a dim environment.
  • the flexible outer bag 6 - 1 and the inner bag 6 - 2 are both made of TPU mesh cloth.
  • the present disclosure simplifies the process on the one hand, and more importantly, avoids the removal of the gas relay and the flanges on the oil pillow side and the main transformer side of the gas relay.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Pipe Accessories (AREA)

Abstract

L'invention concerne un dispositif d'aide pour l'entretien de relais à gaz, comprenant un sac externe souple (6-1) et un sac interne (6-2) ; le sac interne (6-2) est suspendu à l'intérieur du sac externe souple (6-1) au moyen de cordes de levage de sac interne (6-9) ; des bords épaissis (6-3) sont prévus sur les côtés circonférentiels d'une ouverture supérieure du sac externe souple (6-1) ; des trous de levage sont formés sur les bords épaissis (6-3), de part et d'autre du sac externe souple (6-1) ; les trous de levage sont reliés à des verrous (6-5) ; les verrous (6-5) sont reliés à des cordes de suspension (6-6) ; le fond du sac externe souple (6-1) est relié à un tuyau d'évacuation d'huile (6-7) ; et un clapet d'évacuation d'huile (6-8) est prévu sur le tuyau d'évacuation d'huile (6-7).
PCT/CN2023/129090 2023-04-26 2023-11-01 Dispositif d'aide pour l'entretien de relais à gaz et procédé d'utilisation associé WO2024221816A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202310463587.9A CN116488043A (zh) 2023-04-26 2023-04-26 一种用于气体继电器检修的辅助装置及其使用方法
CN202310463587.9 2023-04-26

Publications (1)

Publication Number Publication Date
WO2024221816A1 true WO2024221816A1 (fr) 2024-10-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/129090 WO2024221816A1 (fr) 2023-04-26 2023-11-01 Dispositif d'aide pour l'entretien de relais à gaz et procédé d'utilisation associé

Country Status (2)

Country Link
CN (1) CN116488043A (fr)
WO (1) WO2024221816A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116488043A (zh) * 2023-04-26 2023-07-25 西安热工研究院有限公司 一种用于气体继电器检修的辅助装置及其使用方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114517862A (zh) * 2022-02-17 2022-05-20 广东电网有限责任公司 一种变压器瓦斯继电器拆除临时连通装置和方法
US20220390518A1 (en) * 2019-12-11 2022-12-08 Shanghai Roye Electric Co., Ltd. Method for modifying gas density relay, and gas density relay having online self-checking function and checking method therefor
CN116488043A (zh) * 2023-04-26 2023-07-25 西安热工研究院有限公司 一种用于气体继电器检修的辅助装置及其使用方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220390518A1 (en) * 2019-12-11 2022-12-08 Shanghai Roye Electric Co., Ltd. Method for modifying gas density relay, and gas density relay having online self-checking function and checking method therefor
CN114517862A (zh) * 2022-02-17 2022-05-20 广东电网有限责任公司 一种变压器瓦斯继电器拆除临时连通装置和方法
CN116488043A (zh) * 2023-04-26 2023-07-25 西安热工研究院有限公司 一种用于气体继电器检修的辅助装置及其使用方法

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