Temporary workshop for on-site maintenance of extra-high voltage converter transformer

Abstract

The utility model belongs to the field of power transformers, and particularly relates to a temporary workshop for on-site maintenance of an extra-high voltage converter transformer, which is characterized in that maintenance equipment, external components of the extra-high voltage converter transformer and maintenance materials are placed in an outer dustproof chamber; environment dust fall amount and temperature and humidity control equipment, maintenance operation auxiliary equipment and an extra-high voltage converter transformer oil tank are placed in the inner dustproof chamber; the maintenance equipment in the outer dustproof chamber comprises a vacuum unit and a dry air generator; the environment dust fall amount and temperature and humidity control equipment is installed in the inner dustproof chamber and comprises air filtering equipment, a high-temperature air conditioner, a dehumidifier, a dustproof shed and temperature and humidity detection equipment, the maintenance operation auxiliary equipment comprises a set of assembling frames, a lifting truck and a dust collector, and the inner dustproof chamber and the outer dustproof chamber share a double-beam bridge crane; an inner-outer separating device is arranged between the outer dustproof chamber and the inner dustproof chamber. The temporary factory building for maintenance is simple in structure and convenient to build, and maintenance of the extra-high voltage converter transformer can be carried out on site.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of power transformer, specifically points to a kind of temporary workshop for on-site maintenance of extra-high voltage converter transformer. BACKGROUND

[0002] At present, there are problems of poor transportation conditions for large equipment during the construction of extra-high voltage converter station, and the transportation and construction supporting measures required by large equipment are complex and costly, and many supporting measures are temporary construction and reinforcement measures.

[0003] After the completion and operation of extra-high voltage converter station project, if extra-high voltage converter transformer fails and needs to be overhauled, the return-to-factory maintenance transportation cycle is long, and there are uncertain factors such as difficulty in transporting large equipment and high cost; if maintenance is carried out on the site of extra-high voltage converter transformer, it is limited by site weather, temperature and humidity, wind conditions and other conditions, and the high risks such as damp and pollution of extra-high voltage converter transformer caused by them, and the lack of space for overhauling the body, and there is no application case in the industry. The on-site professional maintenance workshop is mainly used for on-site disassembly, assembly, installation and maintenance of extra-high voltage converter transformer. Due to the long construction period and high construction cost of on-site professional maintenance workshop, at present, it is only constructed in extra-high voltage converter station which does not have the transportation conditions of extra-high voltage converter transformer. Therefore, how to realize the on-site maintenance of extra-high voltage converter transformer at low cost and high efficiency has become a technical problem to be solved. SUMMARY

[0004] The purpose of the utility model is to solve the problems in the background art, and provide a temporary maintenance workshop with short construction period, low engineering cost and the ability to meet the needs of on-site maintenance of extra-high voltage converter transformer. The utility model adopts the technical scheme of:

[0005] A temporary workshop for on-site maintenance of extra-high voltage converter transformer, comprising an outer dustproof room and an inner dustproof room, the outer dustproof room is used to place maintenance equipment, external components of extra-high voltage converter transformer and maintenance materials, and the inner dustproof room is used to place environment dust reduction and temperature and humidity control equipment, maintenance operation auxiliary equipment and extra-high voltage converter transformer oil tank; the maintenance equipment in the outer dustproof room comprises at least one vacuum unit and at least one dry air generator; the environment dust reduction and temperature and humidity control equipment installed in the inner dustproof room comprises at least one air filter device, at least four high-temperature air conditioners, at least two dehumidifiers, a dustproof shed and a temperature and humidity detection device, the maintenance operation auxiliary equipment comprises a set of assembly frame, a lifting vehicle and a dust collector, the inner dustproof room and the outer dustproof room share a double-beam bridge crane; an inner-outer separation device is arranged between the outer dustproof room and the inner dustproof room.

[0006] Preferably, the internal and external separation device includes a steel structure beam, a steel pipe, and a windproof and thickened tarpaulin. The steel structure beam is fixedly installed on the steel structure on the top of the temporary factory building. Light rail wheels are installed at both the top and bottom of the steel pipe. Top and bottom slide rails that cooperate with the light rail wheels are provided on both the steel structure beam and the ground. The top of the windproof and thickened tarpaulin is fixedly connected to the top of the steel pipe. The steel pipe at the end is connected to the forward and reverse motor through a steel wire rope drive.

[0007] Preferably, the windproof and thickened tarpaulin is made of polyethylene tarpaulin; when the windproof and thickened tarpaulin is in a closed state, sandbags are used to help compact and fix the lower end of the windproof and thickened tarpaulin.

[0008] Preferably, the vacuum unit is a movable vacuum unit equipped with casters, and the dry air generator is a movable dry air generator equipped with casters.

[0009] Preferably, the air filtration device is a movable air filtration device equipped with casters, the high-temperature air conditioner is a fixed high-temperature air conditioner, the dehumidifier is a fixed dehumidifier, the dehumidifier is arranged in the middle of the high-temperature air conditioner, and the temperature and humidity detection device is a temperature and humidity meter.

[0010] Preferably, the temporary factory building has a rectangular floor plan, and the entrance / exit is located in the middle of the short axis side, and the entrance / exit is a sliding door structure.

[0011] Preferably, the maintenance auxiliary equipment in the inner dustproof chamber includes a set of movable assembly racks placed on both sides of the long axis of the oil tank, and a movable lifting vehicle set on the short axis side of the oil tank.

[0012] Preferably, the inner and outer dustproof chambers are steel structures with exterior color steel plates for covering.

[0013] The beneficial effects of this utility model are:

[0014] The temporary on-site maintenance workshop for UHV converter transformers provided by this utility model has a simple structure and is easy to assemble. It can carry out on-site maintenance of UHV converter transformer covers and transformer bodies. Compared with a professional on-site maintenance workshop, it saves land area, construction time and project cost. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of the temporary factory building according to an embodiment of the present utility model;

[0017] Figure 2 is a schematic view of the maintenance operation auxiliary equipment of the embodiment of the utility model;

[0018] In the figure, 1 is an outer dustproof room, 2 is an inner dustproof room, 3 is an access door, 4 is a double-beam bridge crane, 5 is a vacuum unit, 6 is a dry air generator, 7 is a high-temperature air conditioner, 8 is a dehumidifier, 9 is an air filtration equipment, 10 is an extra-high voltage converter transformer oil tank, 11 is an assembly frame, 12 is a lifting vehicle, 13 is an inner-outer separation device, 14 is a steel structure beam, 15 is a steel pipe, 16 is a forward-reverse motor, 17 is a sandbag, and 18 is a windproof thickened tarpaulin. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0020] As Figure 1 , 2 required, a temporary workshop for on-site maintenance of an extra-high voltage converter transformer comprises a maintenance workshop body, the maintenance workshop body comprises an outer dustproof room 1 and an inner dustproof room 2, the outer dustproof room 1 is used for placing maintenance equipment required for maintenance work, placing external components of the extra-high voltage converter transformer, and unpacking and cleaning a maintenance material packing box, the inner dustproof room 2 is used for maintenance of an extra-high voltage converter transformer oil tank 10, and environment dust reduction and temperature and humidity control equipment and maintenance operation auxiliary equipment are placed in the inner dustproof room 2.

[0021] In the embodiment of the utility model, the planar structure of the temporary workshop is rectangular, and the access door 3 of the temporary workshop is located at the middle position of the short shaft side (the right side); the access door 3 is a side sliding door structure, and the access door 3 is arranged to transport the extra-high voltage converter transformer oil tank 10 and other equipment into the outer dustproof room 1 and the inner dustproof room 2.

[0022] The maintenance equipment in the outer dustproof room 1 comprises at least one vacuum unit 5 and one dry air generator 6. The vacuum unit 5 is a movable vacuum unit 5 with universal wheels for vacuumizing the extra-high voltage converter transformer oil tank and components, such as a device with a model number of VG4200, the vacuumizing speed is 4200 m 3 / h, and the requirement of vacuumizing the oil tank to 30 Pa is met. The dry air generator 6 is a movable dry air generator 6 with universal wheels for continuously blowing dry air into the oil tank and the inner dustproof room 2 during the maintenance process of the extra-high voltage converter transformer oil tank 10, such as a device with a model number of AD100, the dry air flow is 100 m 3 / h, and the dew point is ≤-65 DEG C.

[0023] The inner-outer separation device 13 between the outer dustproof room 1 and the inner dustproof room 2 is used to realize the environmental isolation between the inner dustproof room 2 and the outer dustproof room 1 during the maintenance work, realize the different environmental control in the inner dustproof room 2 and the outer dustproof room 1 during the maintenance process, and especially ensure the independent environment inside the inner dustproof room 2, so that the environmental temperature, the environmental humidity and the dust reduction amount of the inner dustproof room 2 meet the maintenance work requirements of the extra-high voltage converter transformer oil tank 10. The inner-outer separation device 13 in the embodiment includes a steel structure beam 14, a steel pipe 15 and a windproof thickened tarpaulin 18. The windproof thickened tarpaulin 18 is made of, for example, 0.6mm thick polyethylene tarpaulin. The steel structure beam 14 is fixedly installed on the steel structure on the top of the temporary factory building. The top end and the bottom end of the steel pipe 15 are both provided with light rail wheels. The steel structure beam 14 and the ground are both provided with a top end slide rail and a bottom end slide rail matched with the light rail wheels. The top end of the windproof thickened tarpaulin 18 is fixedly connected with the top end of the steel pipe 15. The steel pipe 15 at the end is connected with the forward and reverse motor 16 through a steel wire rope transmission. The forward and reverse motor 16 drives the steel pipe 15 at the end to slide through the steel wire rope, so as to realize the rapid opening and closing of the windproof thickened tarpaulin 18. When the windproof thickened tarpaulin 18 is in the closed state, sandbags 17 are used to assist the compaction and fixation of the lower end of the windproof thickened tarpaulin 18.

[0024] The environmental dust reduction amount and temperature and humidity control equipment installed in the inner dustproof room 2 includes at least one air filtration equipment 9, at least four high-temperature air conditioners 7, at least two dehumidifiers 8, a dustproof shed and temperature and humidity detection equipment. The maintenance operation auxiliary equipment includes a set of assembly racks 11, a lifting vehicle 12 and a dust collector. The set of assembly racks 11 are arranged in parallel on both sides of the extra-high voltage converter transformer oil tank 10. The inner dustproof room 2 and the outer dustproof room 1 share a double-beam bridge crane 4 with a lifting capacity of 32 tons.

[0025] The inner dustproof room 2 and the outer dustproof room 1 in the embodiment are steel structure bodies, and the outside is covered with color steel plates to meet the requirements of the maintenance environment such as windproof and rainproof. Modular building materials are used for convenient transportation and on-site assembly and installation.

[0026] The environmental control equipment in the inner dustproof room 2 in the embodiment includes a movable air filtration equipment 9 with universal wheels for controlling the dust reduction amount in the inner dustproof room 2, such as KJ1200F, with an air volume of 1000m 3 / h, which controls the dust reduction amount in the inner dustproof room 2 to be less than or equal to 15mg / (m 3A fixed high-temperature air conditioner 7 for environmental temperature control is arranged near the square corners of the inner dustproof chamber 2, and a fixed dehumidifier 8 for environmental air dehumidification is arranged in the middle of the high-temperature air conditioner 7 arranged in the long axis direction of the inner dustproof chamber 2, and the above devices are used to control the environmental temperature in the inner dustproof chamber 2 to be 16-28 DEG C and the humidity to be less than or equal to 50% RH; a temperature and humidity meter with a temperature measurement accuracy of not less than ±1 DEG C and a humidity measurement accuracy of not less than ±2% RH is placed at the flange opening of the oil tank when the oil tank is opened for maintenance, so as to detect the temperature and humidity to meet the maintenance requirements.

[0027] The maintenance operation auxiliary equipment in the inner dustproof chamber 2 in the embodiment includes a set of movable assembly racks 11 for maintenance personnel to work at a high position on the long axis side of the oil tank, movable lifting vehicles 12 for personnel to work at a high position on the short axis side of the oil tank, a double-beam bridge crane 4 for lifting the tank cover and switches and other components, and a dust collector, so as to conveniently complete the cover lifting maintenance and body maintenance and other maintenance work in the temporary maintenance workshop. The number of the above devices is appropriate according to the temperature and humidity, dust removal amount and other conditions required for maintenance.

[0028] When the UHV converter transformer needs to be maintained on site, the UHV converter transformer oil tank 10 is transported into the inner dustproof chamber 2 after being cleaned, and the inner and outer isolation devices 13 between the inner dustproof chamber 2 and the outer dustproof chamber 1 are completely closed; after the maintenance is completed by using the maintenance equipment, the UHV converter transformer oil tank 10 is transported into the outer dustproof chamber 1, and the maintenance is completed by using the maintenance operation auxiliary equipment and then transported to the UHV converter station for installation of the UHV converter transformer oil tank 10.

[0029] During the maintenance, the components such as the bushings, the lifting seat, the oil storage cabinet and the cooler of the UHV converter transformer which need to be removed are transported into the outer dustproof chamber 1 for temporary storage in a rainproof manner, and the components such as the tank cover and the switch of the UHV converter transformer which need to be removed during the maintenance are lifted into the outer dustproof chamber 1 by using the double-beam bridge crane 4 for temporary storage.

[0030] In the embodiment of the utility model, the technical features not described in detail are prior art or conventional technical means, which will not be described here.

[0031] The above description is only a preferred embodiment of the utility model, and does not limit the structure of the utility model in any form.

Claims

1. A temporary workshop for on-site maintenance of an extra-high voltage converter transformer, comprising an outer dustproof chamber and an inner dustproof chamber, characterized in that, The outer dustproof chamber houses maintenance equipment, external components of the UHV converter transformer, and maintenance materials. The inner dustproof chamber houses environmental dust reduction and temperature / humidity control equipment, maintenance operation auxiliary equipment, and the UHV converter transformer oil tank. The maintenance equipment in the outer dustproof chamber includes at least one vacuum unit and at least one dry air generator. The environmental dust reduction and temperature / humidity control equipment installed in the inner dustproof chamber includes at least one air filter, at least four high-temperature air conditioners, at least two dehumidifiers, a dustproof shed, and temperature / humidity detection equipment. The maintenance operation auxiliary equipment includes a set of assembly racks, a lifting vehicle, and a vacuum cleaner. The inner and outer dustproof chambers share a single double-girder bridge crane. An internal and external separation device is installed between the outer and inner dustproof chambers.

2. The temporary workshop for field repair of an extra-high voltage converter transformer according to claim 1, characterized in that, The internal and external separation device includes steel structure beams, steel pipes, and windproof thickened tarpaulins. The steel structure beams are fixedly installed on the steel structure on the top of the temporary factory building. Light rail wheels are installed at the top and bottom of the steel pipes. Top and bottom slide rails that cooperate with the light rail wheels are set on the steel structure beams and the ground. The top of the windproof thickened tarpaulin is fixedly connected to the top of the steel pipes. The steel pipes at the ends are connected to the forward and reverse motors via steel wire rope transmission.

3. The temporary workshop for field repair of an extra-high voltage converter transformer according to claim 2, characterized in that, The windproof and thickened tarpaulin is made of polyethylene tarpaulin; when the windproof and thickened tarpaulin is in a closed state, sandbags are used to help compact and fix the lower end of the windproof and thickened tarpaulin.

4. The temporary workshop for field repair of an extra-high voltage converter transformer according to claim 1, characterized in that, The vacuum unit is a movable vacuum unit equipped with casters, and the dry air generator is a movable dry air generator equipped with casters.

5. The temporary workshop for field repair of an extra-high voltage converter transformer according to claim 4, characterized in that, The air filtration device is a movable air filtration device equipped with casters, the high-temperature air conditioner is a fixed high-temperature air conditioner, the dehumidifier is a fixed dehumidifier, the dehumidifier is arranged in the middle of the high-temperature air conditioner, and the temperature and humidity detection device is a temperature and humidity meter.

6. The temporary workshop for field repair of an extra-high voltage converter transformer according to claim 1, characterized in that, The temporary factory building has a rectangular floor plan, and the entrance / exit is located in the middle of the short axis side. The entrance / exit is a sliding door structure.

7. The field maintenance temporary factory of an extra-high voltage converter transformer according to claim 1, characterized in that, The maintenance auxiliary equipment in the dustproof chamber includes a set of movable assembly racks placed on both sides of the long axis of the oil tank, and a movable lifting vehicle set on the short axis side of the oil tank.

8. A temporary workshop for on-site repair of an extra-high voltage converter transformer according to any of claims 1-7, characterized in that, The inner and outer dustproof chambers are steel structures with exterior color steel panels.

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