CN116488043A - Auxiliary device for overhauling gas relay and using method of auxiliary device - Google Patents
Auxiliary device for overhauling gas relay and using method of auxiliary device Download PDFInfo
- Publication number
- CN116488043A CN116488043A CN202310463587.9A CN202310463587A CN116488043A CN 116488043 A CN116488043 A CN 116488043A CN 202310463587 A CN202310463587 A CN 202310463587A CN 116488043 A CN116488043 A CN 116488043A
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- Prior art keywords
- gas relay
- flexible outer
- outer bag
- auxiliary device
- oil
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- Legal status (The legal status 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 status listed.)
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- 238000000034 method Methods 0.000 title abstract description 14
- 238000012423 maintenance Methods 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses an auxiliary device for overhauling a gas relay and a using method thereof, belonging to the technical field of operation and maintenance of power stations. Comprises a flexible outer bag and an inner bag; the inner bag is suspended inside the flexible outer bag through a plurality of inner bag hanging ropes; the periphery of the upper opening of the flexible outer bag is provided with a thickened edge, the thickened edges on two sides of the flexible outer bag are provided with a plurality of hanging holes, the hanging holes are connected with a lock catch, and the lock catch is connected with a hanging rope; the bottom of the flexible outer bag is connected with an oil drain pipe, and an oil drain valve is arranged on the oil drain pipe. The problems that in the existing transformer gas relay field overhaul, the working links are more, the labor intensity is high, the safety is low, the working quality dead zone is low, the sealing of the connecting flange caused by disassembling and assembling the gas relay is not tight, oil leakage and the like are difficult to implement are effectively solved, and reliable technical support is provided for safely, high-quality and high-efficiency completion of the transformer gas relay field overhaul.
Description
Technical Field
The invention belongs to the technical field of operation and maintenance of power stations, and particularly relates to an auxiliary device for overhauling a gas relay and a use method thereof.
Background
With the rapid development of technology, equipment state maintenance and intelligent power plant (station) construction are orderly promoted, unmanned (less) on duty work of the hydropower plant (station) meeting the requirement of personnel reduction and synergy is gradually implemented, meanwhile, on-site maintenance staff is also reduced, and the work of periodical maintenance, maintenance and inspection of electrical equipment is also required to be implemented according to standard requirements. DL/T540-2013, gas Relay inspection procedure, requires that before installation of the gas relay, overhaul of the transformer, malfunction of the relay, refusal of the operation, maintenance and operation for no more than 5 years, etc. DL/T572-2021 Power Transformer operation regulations require periodic checks and tests of internal structure, operational reliability, contact wiring, etc. of the gas relay in operation every 2 to 3 years. National energy safety [2014]161 twenty-five key requirements for preventing electric power production accidents ] 12.3.5 requires that the gas relay should be checked regularly.
For a long time, the gas relay on site is regularly overhauled by disassembling the relay which is verified to be qualified by old replacement, the working process is to use plastic cloth to bind and receive the residual transformer oil, and then secondary professionals drive signals and tripping loops through gas relay contacts and test buttons. Blind areas exist for checking and overhauling the mechanical part, the contact wiring and the loop in the gas relay. However, since the site installation position of a part of the gas relay is deviated from the regulation requirement, the site disassembly is difficult to implement, so that the site operation of the part of the periodic maintenance period of the gas relay which does not exceed 5 years is not easy to implement, the gas relay which is subjected to maintenance individually is also replaced integrally with the housing, and the internal structure inspection and repair work is not carried out.
The existing transformer gas relay regular (abnormal) replacement maintenance is complicated in disassembly and reinstallation maintenance flow, flange bolts are not easy to disassemble, flange sealing rings are easy to install and deflect, transformer oil is provided with transformer oil pollution equipment with long exposure air time and drip leakage, and the safety of receiving transformer oil by using plastic cloth is not high, meanwhile, the problems of high field labor intensity, disassembly in maintenance process, transformer oil pollution equipment discharged by the reinstallation gas relay, long inspection and transportation time brought out by the gas relay and the like are also solved, normal efficiency of intensive maintenance cannot be brought into full play, the unnecessary flow causes waste of effective working time and increase of labor intensity of maintenance personnel, and the field working safety hidden trouble is increased. The working requirements of safety, environmental protection, high maintenance quality, short maintenance time and the like of the transformer maintenance process are not met.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an auxiliary device for overhauling a gas relay and a use method thereof, which can effectively solve the problems of multiple working links, high labor intensity, low safety, dead zones of working quality, loose sealing of a connecting flange, oil leakage and the like caused by disassembling and assembling the gas relay in the existing transformer gas relay on-site overhauling, and provide reliable technical support for safely, high-quality and high-efficiency completion of the transformer gas relay on-site overhauling.
The invention is realized by the following technical scheme:
the invention discloses an auxiliary device for overhauling a gas relay, which comprises a flexible outer bag and an inner bag; the inner bag is suspended inside the flexible outer bag through a plurality of inner bag hanging ropes; the periphery of the upper opening of the flexible outer bag is provided with a thickened edge, the thickened edges on two sides of the flexible outer bag are provided with a plurality of hanging holes, the hanging holes are connected with a lock catch, and the lock catch is connected with a hanging rope; the bottom of the flexible outer bag is connected with an oil drain pipe, and an oil drain valve is arranged on the oil drain pipe.
Preferably, a plurality of reserved adjusting holes for adjusting the opening size of the flexible outer bag are arranged on the thickened edge of the flexible outer bag.
Further preferably, the reserved adjusting hole and the hanging hole are both fixed with an air button made of metal.
Further preferably, the upper opening of the flexible outer bag is rectangular, the hanging holes are arranged on the first side and the second side which are opposite, and the reserved adjusting holes are arranged on the third side and the fourth side which are opposite; the reserved adjusting holes are arranged in pairs, and the distances between adjacent reserved adjusting holes are equal.
Preferably, the opening of the inner bag is provided with a sealing device.
Preferably, the lock catch is a quick-release type safety lock catch, and the hanging rope is a static rope.
Preferably, the oil drain pipe is connected with a quick connector, and the quick connector is detachably connected with an oil drain hose.
Preferably, the inner wall of the flexible outer bag is provided with a high oil level warning sign.
Preferably, the flexible outer bag and the inner bag are made of TPU sandwich mesh fabrics.
The application method of the auxiliary device for overhauling the gas relay disclosed by the invention comprises the following steps of:
installing the auxiliary device, and hoisting the suspension ropes on pipelines at two sides of the gas relay shell to enable the flexible outer bag to be positioned right below the gas relay shell; closing valves of the main transformer side flange and the conservator side flange, connecting oil in the gas relay shell into the flexible outer bag, removing the gas relay top cover and the gas relay actuating mechanism in the gas relay shell, and putting the gas relay actuating mechanism into the inner bag; after overhauling and checking the gas relay actuating mechanism, installing the checked gas relay actuating mechanism back to the gas relay shell, adjusting a sealing ring at the gas relay top cover, installing and fixing the gas relay top cover on the gas relay shell, and disassembling the auxiliary device; when the oil in the flexible outer bag exceeds a preset oil level, an oil discharge valve is opened to discharge oil through an oil discharge pipe.
Compared with the prior art, the invention has the following beneficial technical effects:
the auxiliary device for overhauling the gas relay disclosed by the invention can be conveniently and rapidly hung below the gas relay through the hanging rope, so that the oil receiving and loading in the overhauling work of the gas relay are safe and reliable, and the time and the labor are saved; the flexible outer bag can be suitable for gas relays with different specifications and can also meet any field space; and when the oil is more, the oil can be discharged at any time through the oil discharge pipe; the thickened edge on the periphery of the opening at the upper part of the flexible outer bag can greatly improve the strength and avoid tearing after the flexible outer bag is stressed; in addition, the disassembled parts, spare parts and tools can be stored through the inner bag, so that the problems of lifting, transportation protection and placement in high-altitude operation are solved, and the purpose of 'one object with multiple purposes' is achieved.
Further, the reserved adjusting holes are formed in the flexible outer bag, the size of the whole auxiliary device and the opening size of the flexible outer bag can be flexibly adjusted according to the size specification of the gas relay and the size of the field operation space, and the applicability is improved.
Furthermore, the reserved adjusting holes and the hanging holes are both fixed with air hole buckles made of metal materials, so that the strength of the reserved adjusting holes and the strength around the hanging holes can be increased, and the flexible outer bag is prevented from being torn by stress.
Furthermore, the reserved adjusting holes are arranged in pairs on opposite sides of the flexible outer bag, and the distances between the adjacent reserved adjusting holes are equal, so that the flexible outer bag can be uniformly stressed.
Further, the sealing device is arranged on the opening of the inner bag, so that the opening of the inner bag can be sealed, and parts, tools and the like in the opening of the inner bag can be stored and protected.
Further, the oil drain pipe is connected with a quick connector, and the quick connector is detachably connected with an oil drain hose, so that oil drain can be conveniently performed.
Further, the inner wall of the flexible outer bag is provided with a high oil level warning sign, so that operators can be timely reminded of discharging oil, and oil overflow is avoided.
Further, the flexible outer bag and the flexible inner bag are made of TPU sandwich mesh fabrics, and the flexible outer bag and the flexible inner bag are high in strength, oil-resistant, acid-resistant and alkali-resistant and good in corrosion resistance.
The application method of the auxiliary device for overhauling the gas relay, disclosed by the invention, provides a method for achieving the purpose of overhauling the gas relay regularly without disassembling the gas relay and a connecting pipeline. According to the optimized maintenance flow, the periodic maintenance and replacement time of the main transformer gas relay (single) is shortened from about 4-5 people to about 60-120 minutes to within 30 minutes of 2-3 people, so that ascending operators and operation time are reduced, potential hazards of sealing and oil leakage which may occur when the gas relay is disassembled and assembled and the flange is connected in a ring are reduced, meanwhile, the auxiliary device for maintenance of the gas relay is fast and reliably fixed, is convenient to use, and prevents transformer oil in working from leaking and polluting equipment according to an actual oil discharge method, and on the basis of improving working quality and working efficiency, the main transformer power failure maintenance time is saved, and oil waste and ring connection pollution are saved. The process meets the requirements of regulations and anti-measures, greatly reduces the number of workers for ascending, lightens the labor intensity of site operation, completes the periodic maintenance work of the gas relay with high quality and high efficiency on the premise of ensuring safety, and provides technical support for shortening the maintenance time of the transformer and the safe and reliable operation of the transformer after maintenance.
Drawings
FIG. 1 is a schematic view of the overall structure of an auxiliary device for gas relay maintenance according to the present invention;
fig. 2 is a schematic view showing a use state of the auxiliary device for overhauling the gas relay.
In the figure, 1 is a gas relay shell, 2 is a gas relay actuating mechanism, 3 is a gas relay top cover, 4 is a main transformer side flange, 5 is a conservator side flange, 6 is an auxiliary device, 6-1 is a flexible outer bag, 6-2 is an inner bag, 6-3 is a thickened edge, 6-4 is a reserved adjusting hole, 6-5 is a lock catch, 6-6 is a hanging rope, 6-7 is an oil drain pipe, 6-8 is an oil drain valve, and 6-9 is an inner bag hanging rope.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, the content of which is to be interpreted as illustrative and not limiting:
as shown in fig. 1, the auxiliary device for overhauling the gas relay comprises a flexible outer bag 6-1 and an inner bag 6-2; the inner bag 6-2 is hung inside the flexible outer bag 6-1 through a plurality of inner bag hanging ropes 6-9; the periphery of the upper opening of the flexible outer bag 6-1 is provided with a thickened edge 6-3, the thickened edges 6-3 on two sides of the flexible outer bag 6-1 are provided with a plurality of hanging holes, the hanging holes are connected with a lock catch 6-5, and the lock catch 6-5 is connected with a hanging rope 6-6; the bottom of the flexible outer bag 6-1 is connected with an oil drain pipe 6-7, and the oil drain pipe 6-7 is provided with an oil drain valve 6-8.
In a preferred embodiment of the invention, the thickened edge 6-3 of the flexible outer bag 6-1 is provided with a plurality of reserved adjusting holes 6-4 for adjusting the opening size of the flexible outer bag 6-1. Preferably, the reserved adjusting holes 6-4 and the hanging holes are both fixed with air hole buckles made of metal materials. Preferably, the upper opening of the flexible outer bag 6-1 is rectangular, the hanging holes are arranged on the first side and the second side which are opposite, and the reserved adjusting holes 6-4 are arranged on the third side and the fourth side which are opposite; the reserved adjusting holes 6-4 are arranged in pairs, and the intervals between adjacent reserved adjusting holes 6-4 are equal.
In a preferred embodiment of the invention, the opening of the inner bag 6-2 is provided with sealing means.
In a preferred embodiment of the invention, the shackle 6-5 is a quick release safety shackle and the suspension rope 6-6 is a static rope.
In a preferred embodiment of the invention, the oil drain pipe 6-7 is connected with a quick connector, which is detachably connected with an oil drain hose.
In a preferred embodiment of the invention, the inner wall of the flexible outer bag 6-1 is provided with a high oil level warning sign. Preferably, the high oil level warning sign may be identified with a fluorescent paint to enable the operator to observe in time even in a dim environment.
In a preferred embodiment of the present invention, the flexible outer bag 6-1 and the inner bag 6-2 are made of TPU mesh fabrics.
Before the invention, the overhaul flow of the gas relay is as follows:
(1) fixing plastic cloth or a plastic barrel; (2) closing valve flanges at two sides of the gas relay; (3) respectively dismantling a flange at the side of the gas relay oil conservator and a flange at the side of the main transformer; (5) taking out the old gas relay; (6) adjusting and installing a gas relay to be replaced; (7) and adjusting and installing flanges and sealing rings on the side of the gas relay conservator and the side of the main transformer.
The auxiliary device for overhauling the gas relay is characterized in that when the auxiliary device is used:
as shown in fig. 2, the auxiliary device 6 is installed, and the hanging ropes 6-6 are hoisted on the pipelines at two sides of the gas relay shell 1, so that the flexible outer bag 6-1 is positioned right below the gas relay shell 1; closing valves of the main transformer side flange 4 and the conservator side flange 5, connecting oil in the gas relay shell 1 into the flexible outer bag 6-1, removing the gas relay top cover 3 and the gas relay executing mechanism 2 in the gas relay shell 1, and putting the gas relay executing mechanism into the inner bag 6-2; after overhauling and checking the gas relay executing mechanism 2, installing the checked gas relay executing mechanism 2 back to the gas relay shell 1, adjusting a sealing ring at the gas relay top cover 3, installing and fixing the gas relay top cover 3 on the gas relay shell 1, and disassembling the auxiliary device 6; when the oil in the flexible outer bag 6-1 exceeds a preset oil level, the oil discharge valve 6-8 is opened to discharge oil through the oil discharge pipe 6-7.
It can be seen that the invention optimizes the overhaul flow as:
(1) fixing the auxiliary device of the invention; (2) closing valve flanges at two sides of the gas relay; (3) removing the top cover and the executing mechanism of the old gas relay; (4) loading a gas relay top cover and an executing mechanism which are qualified in verification; (5) and adjusting and fixing the top cover sealing ring.
The invention simplifies the flow, and more importantly, avoids dismantling the flange on the gas relay and the flange on the side of the gas relay conservator and the flange on the main transformer side.
The foregoing is only a part of the embodiments of the present invention, and although some terms are used in the present invention, the use of other terms is not excluded. These terms are used merely for convenience of description and to explain the nature of the invention and are to be construed as any additional limitations that are not intended to depart from the spirit of the invention. The foregoing description of the invention is provided by way of example only to facilitate easy understanding, but is not intended to limit the scope of the invention to any particular embodiment or embodiment, and is to be construed as being limited thereto.
Claims (10)
1. An auxiliary device for overhauling a gas relay is characterized by comprising a flexible outer bag (6-1) and an inner bag (6-2); the inner bag (6-2) is hung inside the flexible outer bag (6-1) through a plurality of inner bag hanging ropes (6-9); the periphery of the upper opening of the flexible outer bag (6-1) is provided with a thickened edge (6-3), the thickened edges (6-3) on two sides of the flexible outer bag (6-1) are provided with a plurality of hanging holes, the hanging holes are connected with a lock catch (6-5), and the lock catch (6-5) is connected with a hanging rope (6-6); the bottom of the flexible outer bag (6-1) is connected with an oil drain pipe (6-7), and the oil drain pipe (6-7) is provided with an oil drain valve (6-8).
2. Auxiliary device for gas relay maintenance according to claim 1, characterized in that the thickened edge (6-3) of the flexible outer bag (6-1) is provided with a number of pre-arranged adjustment holes (6-4) for adjusting the opening size of the flexible outer bag (6-1).
3. Auxiliary device for gas relay maintenance according to claim 2, characterized in that the reserved adjustment holes (6-4) and the hanging holes are both fixed with metal eyelet.
4. Auxiliary device for the overhaul of a gas relay according to claim 2, characterized in that the upper opening of the flexible outer bag (6-1) is rectangular, the hanging holes are provided on opposite first and second sides, the reserved adjustment holes (6-4) are provided on opposite third and fourth sides; the reserved adjusting holes (6-4) are arranged in pairs, and the intervals between the adjacent reserved adjusting holes (6-4) are equal.
5. Auxiliary device for the overhaul of a gas relay according to claim 1, characterized in that the opening of the inner bag (6-2) is provided with sealing means.
6. Auxiliary device for the overhaul of a gas relay according to claim 1, characterized in that the lock catch (6-5) is a quick release safety lock catch and the suspension rope (6-6) is a static rope.
7. Auxiliary device for the overhaul of a gas relay according to claim 1, characterized in that the oil drain pipe (6-7) is connected with a quick connector, to which an oil drain hose is detachably connected.
8. Auxiliary device for the overhaul of a gas relay according to claim 1, characterized in that the inner wall of the flexible outer bag (6-1) is provided with a high oil level warning sign.
9. Auxiliary device for gas relay maintenance according to claim 1, characterized in that the flexible outer bag (6-1) and the inner bag (6-2) are both made of TPU mesh-coated fabrics.
10. The use of an auxiliary device for gas relay maintenance according to any one of claims 1 to 9, characterized by comprising:
installing the auxiliary device (6), and hoisting the suspension ropes (6-6) on pipelines at two sides of the gas relay shell (1) to enable the flexible outer bag (6-1) to be positioned right below the gas relay shell (1); closing valves of a main transformer side flange (4) and a conservator side flange (5), connecting oil in a gas relay shell (1) into a flexible outer bag (6-1), dismantling a gas relay top cover (3) and a gas relay executing mechanism (2) in the gas relay shell (1), and putting the gas relay executing mechanism into the inner bag (6-2); after overhauling and checking the gas relay actuating mechanism (2), installing the checked gas relay actuating mechanism (2) back to the gas relay shell (1), adjusting a sealing ring at the gas relay top cover (3), installing and fixing the gas relay top cover (3) on the gas relay shell (1), and dismantling the auxiliary device (6); when the oil in the flexible outer bag (6-1) exceeds a preset oil level, an oil discharge valve (6-8) is opened to discharge oil through an oil discharge pipe (6-7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310463587.9A CN116488043A (en) | 2023-04-26 | 2023-04-26 | Auxiliary device for overhauling gas relay and using method of auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310463587.9A CN116488043A (en) | 2023-04-26 | 2023-04-26 | Auxiliary device for overhauling gas relay and using method of auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116488043A true CN116488043A (en) | 2023-07-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310463587.9A Pending CN116488043A (en) | 2023-04-26 | 2023-04-26 | Auxiliary device for overhauling gas relay and using method of auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116488043A (en) |
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2023
- 2023-04-26 CN CN202310463587.9A patent/CN116488043A/en active Pending
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