CN204857384U - On --spot 800kV in power station trades rheologic vapour phase drying system - Google Patents
On --spot 800kV in power station trades rheologic vapour phase drying system Download PDFInfo
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- CN204857384U CN204857384U CN201520605846.8U CN201520605846U CN204857384U CN 204857384 U CN204857384 U CN 204857384U CN 201520605846 U CN201520605846 U CN 201520605846U CN 204857384 U CN204857384 U CN 204857384U
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Abstract
The utility model relates to an on - -spot 800kV in power station trades rheologic vapour phase drying system, solvent holding vessel, vapour phase condensation module, evaporation distillation module, the sump tank connected including the order, the cooling water source module of being connected through vacuum molding piece and vapour phase condensation module to and distill electrical heating module, filter module, the transformer module that the module is connected with the evaporation, transformer module is connected with the coarse filter module. The utility model provides a dry technological problem of on -the -spot vapour phase, can realize the extra -high voltage product and at onsite repair, perhaps repair on the installation station, need not return the manufactory and repair. Practice thrift because the transportation of heavy major possession, must reform transform and the dear expense that needs road and bridge on the way, and save a large amount of costs of transportation to save a large amount of transportation time.
Description
Technical field
The utility model relates to the dry treatment system of a kind of portable vapour phase, is specifically designed to ± vapour phase drying the process of the high-end DC converter transformer of 800kV at scene, power station.Belong to transformer manufacturing and service technique field.
Background technology
The change of ± 800kV DC converter is that the change of current of current highest voltage level becomes.Only have transformer producer few in number in the world at present, this series products can be produced.And this series products, be all produce in the high-end clean clean factory building of transformer manufacturing factory.High requirement is had to equipment and manufacturing environment.Run on-the-spot at transformer, the disintegration of such transformer, maintenance, drying, never carried out in the world.
± 800kV DC converter becomes, if repaired at the scene, can only take traditional equipment for drying and process in the past, but be difficult to the insulation property requirement meeting the huge transformer of this ultra high voltage.Generally all must return repair in shop reason.But, because its huge hauled weight, and the transportation clearance transfinited, need expensive freight, and very long haulage time; And huge expense is needed to road rectification and bridge strengthening.Especially the vapour phase drying process in factory needs very greatly and very heavy vacuum tank, this vacuum tank at the scene in cannot implement.
Utility model content
The utility model, for above-mentioned the deficiencies in the prior art, develops a kind of vapour phase drying system, for after spot repair ± 800kV DC converter sell of one's property product carry out vapour phase drying process.
The technical scheme that the utility model is adopted for achieving the above object is: the vapour phase drying system that scene, power station ± 800kV change of current becomes, comprise the solvent storage tank, vapour phase condensation module, evaporative distillation module, the sump tank that are linked in sequence, by the cooling water source module that vacuum module is connected with vapour phase condensation module, and with electric heating module, filter module, the transformer module of evaporative distillation model calling; Described transformer module is connected with filter module.
Described vacuum module, vapour phase condensation module, evaporative distillation module, filter module, electric heating module, cooling water source module, solvent storage tank, sump tank, transformer module are arranged at independently in framework respectively, with control system model calling.
The fuel tank that described transformer module adopts is a closed container, and transformer body is positioned at fuel tank; Top of oil-tank is provided with port, is connected with vacuum module, vapour phase condensation module; Fuel tank top is provided with solvent vapo(u)r entrance, with evaporative distillation model calling; Tank bottoms is provided with condensate liquid return port, is connected with filter module.
The pipeline of described solvent vapo(u)r entrance and evaporative distillation model calling is provided with vacuum butterfly valve, and adjacent with solvent vapo(u)r entrance.
The utility model has following beneficial effect and advantage:
1. the utility model has manufactured a dry Special oil tank of special on-the-spot vapour phase, substitutes huge, heavy, expensive, and the vacuum tank that the manufacturing cycle is very long, the fuel tank of protection product own is not subject to any damage.Vacuum tank is not needed to start precedent for the change of current becomes drying at the scene.
2. the utility model solves the technical barrier of on-the-spot vapour phase drying, can realize ultra high voltage product and repair at the scene, or repairs on installation station, does not need to return manufactory and repairs.
3. save because heavy Over-size transport, the expensive expense that must need road and bridge transformation on the way; And save a large amount of costs of transportation, and save a large amount of haulage times.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Wherein, 1 vacuum module, 2 vapour phase condensation modules, 3 evaporative distillation modules, 4 filter modules, 5 electric heating modules, 6 cooling water source modules, 7 solvent storage tanks, 8 sump tanks, 9 control system modules, 10 transformer modules, 11 vacuum butterfly valves;
Fig. 2 is ± 800kV change of current realization field vapour phase dry treatment process process schematic;
Wherein, a1, preparatory stage, a2, cascade raising temperature stage, a3, washing oil stage: two evaporator alternatively vaporiseds and distillation be middle step-down repeatedly, a4, stablize the heating period: two evaporators heat simultaneously, a5, buck stage, a6, high vacuum stage of Fig, a7, vacuum oil stage, a8, quietly put the stage.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Modules existing in vapour phase drying device can be assembled by the utility model at the scene, and takes effective dry treatment process method at the scene, meets the high-level requirement of product insulation property.Efficiently solve the type transformer dry technical barrier processed at the scene, obtain good quality and comprehensive benefit.
Vapour phase drying system of the present utility model can meet 750kV, 800kV, and the vapour phase drying process at scene, power station of 1000kV and above transformer.Can be contained on common transport vehicle, common road transports; High, be widely all no more than transportation limitation.Vapour phase drying system is modularized design, and except the fuel tank in transformer module has carried out structural improvement, the internal structure of modules and inner annexation are prior art.
Portable solvent vapour phase drying system, directly in dry Special oil tank, realizes right ± 800kV converter transformer body and carries out the drying of solvent vapour phase, ensure that the dry mass of device body reaches the dry processing horizontal in transformer manufacturing factory.And after the drying, take effective device body damp-proof treatment, ensure that product is in the processes such as installation, reduces the moisture absorption to greatest extent, guarantees that product has excellent insulation property.
As shown in Figure 1, field drying treatment system comprises 10 major parts, adopts organic vapor to carry out drying to transformer body.Each functions of modules is see table one:
Table one
Above 10 parts, are installed in different frames.Can conveniently assemble and disassemble, and available common transport vehicle is transported; Be easy at the scene be arranged into around transformer, and link up.
The anatomical connectivity of system is as follows:
The vacuum port b of vacuum module 1 is connected for vacuumizing with the condensed fluid collection tank port d of vapour phase condensation module 2, vacuum port b is connected with the port a of transformer module 10, for vacuumizing; Cooling water gateway is connected by cooling water pipe p and q with the cooling water gateway of cooling water source module 6, for cooling the equipment in vacuum module 1;
The liquid flux gateway s/v of vapour phase condensation module 2 is connected with the liquid flux gateway r/u of solvent storage tank 7, for liquid flux interpolation and return; Condensed fluid collection tank port d is connected with the port a of transformer module 10, for returning solvent vapo(u)r; Vacuum port e is connected by pipeline with the vacuum orifice f of evaporative distillation module 3, for vacuumizing;
The heat conducting oil pipe gateway of evaporative distillation module 3 is connected by pipeline m/n with the heat conducting oil pipe gateway of electric heating module 5, for transmitting conduction oil; The condensate liquid of transformer module 10 inside, by the condensate inlet j of condensate liquid return port i inflow filter module 4, enters into the liquid inlet l of evaporative distillation module 3 by the condensate outlet k of filter module 4; Distillation terminates remaining waste oil squeezes into sump tank 8 waste oil entrance y by the waste oil outlet x of evaporative distillation module 3.
Wherein, evaporative distillation module 3 adopts the evaporator that two functions are identical; Two evaporators can alternately realize, the evaporation of full symmetric and distillation function, adopt continuous still to purify solvent, need not interrupt heating process.
Electric heating module 5 adopts isolated electric heater, and electric heater has leakage never.Change electrical heating elements, need not conduction oil be released.
Cooling water source module 6 adopts military handpiece Water Chilling Units, has good anti-seismic performance, and after ensureing repeatedly transport, cold has good sealing, can not make refrigrant leakage.
Transformer module 10, adopts special fuel tank, and fuel tank is a closed container, as an easy vacuum tank, transformer body is loaded this fuel tank.Top of oil-tank is provided with port a, for vacuumizing and the returning of solvent vapo(u)r; Fuel tank top is provided with solvent vapo(u)r entrance h, on the pipeline be connected with evaporative distillation module 3 and near solvent vapo(u)r entrance h place, be provided with vacuum butterfly valve; Tank bottoms is provided with condensate liquid return port i, is connected by pipe-and-filter module 4.
Module 1 ~ 8 is all connected with module 9 with 10, has independently control cabinet in modules, realizes the dcs of real meaning.Module 9 comprises the computer and control system that are connected to each other, and the sensor information gathered in each module feeds back to computer by the I/O controller in each module, and computer controls the equipment in each module by control system.Adopt the control system of I/O controller and industrial computer in control cabinet, there is good opening and perfect safety protection function.
As shown in Figure 2, the technological process of field drying process is as follows:
One. general set-up procedure (solution formulation process)
1) embodiment of this patent has made the Special oil tank that field vapour phase drying process is cashed in special confession ± 800kV change of current at the scene.Require Special oil tank:
(1) ± the container dimensional of 800kV converter transformer body can be held.
(2) fuel tank adopts Q235 carbon steel, and its structure is still the structure of common fuel tank, but will ensure to meet ultimate vacuum requirement of strength.
(3) seal that fuel tank is all, still adopts the sealing of original oil tank of transformer; Interior lacquering still adopts the inwall paint of oil tank of transformer, can tolerate the high temperature test of the dried journey of vapour phase.The test of the solvent flush of vapour phase dry run can be tolerated.
(4) fuel tank sidewall peripheral hardware has heating tape, and bottom is provided with infrared electrothermal plate.Total heating power need meet ± and the 800kV change of current becomes the needs of huge thermal capacity.
(5) have insulation quilt in whole fuel tank outer wrap, insulation quilt is followed successively by asbestos cloth from the inner to the outer, mineral wool, fire-resistant tarpaulin; To the insulation of fuel tank, can stop ± the 800kV change of current becomes the thermal loss that huge surface area brings, and in step-down and high vacuum stage of Fig, temperature can not be made to reduce too much.
Two, the actual general preparation implemented
(1) pipeline between modules is connected;
(2) connect power and control electric wire.
(3) to system energization, prepare to enable.
(4) connect compressed air, provide actuating force to system valve.
(5) cold in cooling water source module starts, and provides the cooling water met the demands to system.
(6) computer in control system module 9 is started, display whole system state.And technological parameter is set, carry out preparation of starting working.
(7) liquid flux is by solvent storage tank 7, by pipeline r-s, squeezes in the Evaporated distiller of module 3; Vacuum pump set in vacuum module 1, by pipeline c-d, to vapour phase condensation module 2, then vacuumizes to the evaporator for distillation in 3 by pipeline e-f, is extracted into operating vacuum pressure (as 4.5kPa ~ 3.0kPa).
Three, System Working Principle is as follows:
A. the preparatory stage
1) start the computer in control module 9 and control system, select automatic running program, click " beginning ".System brings into operation automatically.
2) module 1 is by pipeline a-b, vacuumizes, reach the vacuum degree (as below 700Pa) of setting to the fuel tank of module 10.
3) module 5 electrified regulation, by conduction oil circulation line m-n system, provides heating conduction oil to evaporative distillation module 3.Temperature controls setting range (conduction oil temperature is set as 155 DEG C).
4) two Evaporated distillers in module 3, temperature is raised to the temperature (135 DEG C) of setting, carries out heating simultaneously and prepares.
B. heat up the heating period
(1), after the preparatory stage completes, computer can be automatically brought to the heating period of heating up.
(2) heat up the heating period, two Evaporated distillers in module 3, are entered solvent vapo(u)r in the oil tank of transformer of module 10 by pipeline g-h simultaneously, heat transformer.In order to protect insulation, taking repeatedly step heating process, setting five heating step temperature, temperature gradient 10 ~ 15 DEG C, making insulation temperature reach about 100 DEG C.
(3) simultaneously, the heating tape on transformer module 10 and the heating plate at the bottom of case, start heating.
(4) liquid flux that in transformer module 10 fuel tank, device condensation with it generates, from the oil discharging valve that tank bottoms mouth i and entrance j connecting line are arranged, by pipeline i-j, inflow filter module 4, solvent is returned evaporator by pipeline k-l by pump wherein, carries out circulating-heating use.
(5) solvent vapo(u)r that in transformer module, fuel tank upper port a returns and water vapour, by pipeline a-c-d, turn back to vapour phase condensation module 2, and be condensed into liquid by the main condenser in vapour phase condensation module 2, collect in collecting tank wherein, and be separated because proportion is different there.
(6) along with the carrying out of heating process, a large amount of transformer oil can be washed down, and is mixed in solvent; And after transformer temperature reaches the value (such as 80 DEG C ~ 100 DEG C) of setting, two evaporators in evaporative distillation module 3 start alternatively vaporised heating and distil(l).Laser heating on the one hand, on the one hand transformer oil remaining in evaporative distillation module 3, is discharged in sump tank 8 periodically by pipeline x-y.
(7) when transformer module 10 insulation temperature rise very slow (per hour less than 1 DEG C) time, evaporative distillation module 3 starts the distillation in the middle of heating process, is called for short " middle distillation ", to improve the efficiency of heating surface and water outlet efficiency.Middle distillation and middle pressure reduction (referring to the step-down in the middle of heating process), can carry out simultaneously.
(8) repeatedly carry out repeatedly in the middle of distillation and middle step-down, finally make transformer insulated in moisture discharge in a large number, insulation temperature rises to the temperature (such as more than 120 DEG C) of setting.Stop the heating period.
(9), in heating process, the technology controlling and process of each module and equipment control, and are all automatically completed by module 9.
C. buck stage
(1), after the heating period terminates, computer can be automatically brought to buck stage.
(2) heating system of module 5 is all out of service.
(3) module 2 and module 1 work on, and make solvent vapo(u)r in oil tank of transformer by pipeline a-c-d, all return module 2, and liquid flux, by pipeline i-j-4-k-l, returns in module 3.
(4) heating plate at the bottom of the heating tape in module 10 and case, total power must start heating, maintainer body temperature is more than 90 DEG C.Ensure pressure reduction, transformer has enough heats, ensures the discharge of moisture in the discharge of solvent and insulation.
(5), in pressure reduction, each module process controls and equipment controls, and is all 9. automatically completed by module.After buck stage terminates, system enters the next stage automatically.
D. high vacuum stage of Fig
1), after buck stage terminates, computer can be automatically brought to high vacuum stage of Fig.
2) vapour phase condensation module 2 withdraws from work.
3) module 1, all devotes oneself to work.By pipeline b-a, the full pumping speed of the fuel tank in transformer module 10 is vacuumized.
4) be extracted into the condensation water quantity that vacuum system generates always and reach the permissible value (as: insulating material per ton water yield per hour is less than 20 grams) of setting, vacuum pressure (below 10Pa), time all reach the value of setting.
E. the oiling stage
(1), after high vacuum stage of Fig terminates, computer can be pointed out and be thought end, or automatically stops high vacuum stage of Fig.Prepare to start the oiling stage.As the particularity of ± 800kV change of current sell of one's property product, high vacuum stage of Fig terminates directly to enter the oiling stage afterwards, ensures that insulation can never arrange process because of device body and make moist.
(2) vacuum butterfly valve in closing module 10, fuel tank specially increased, by i-j connecting line being arranged (qualified) transformer oil note oil-feed tank that outside inputs by oil discharging valve.
(3) by main vacuum manifold a-b, vacuum module 1 continues to fuel tank pumping high vacuum in module 10.
F. broken sky is quiet puts
Vacuum is removed with dry air.Quiet unconventional and unrestrained to the needs time.
Claims (4)
1. the vapour phase drying system that scene, power station ± 800kV change of current becomes, it is characterized in that: comprise the solvent storage tank (7), vapour phase condensation module (2), evaporative distillation module (3), the sump tank (8) that are linked in sequence, by the cooling water source module (6) that vacuum module (1) is connected with vapour phase condensation module (2), and the electric heating module (5), filter module (4), the transformer module (10) that are connected with evaporative distillation module (3); Described transformer module (10) is connected with filter module (4).
2. the vapour phase drying system that scene, power station according to claim 1 ± 800kV change of current becomes, it is characterized in that: described vacuum module (1), vapour phase condensation module (2), evaporative distillation module (3), filter module (4), electric heating module (5), cooling water source module (6), solvent storage tank (7), sump tank (8), transformer module (10) are arranged at independently in framework respectively, are connected with control system module (9).
3. the vapour phase drying system that scene, power station according to claim 1 ± 800kV change of current becomes, is characterized in that: the fuel tank that described transformer module (10) adopts is a closed container, and transformer body is positioned at fuel tank; Top of oil-tank is provided with port, is connected with vacuum module (1), vapour phase condensation module (2); Fuel tank top is provided with solvent vapo(u)r entrance, is connected with evaporative distillation module (3); Tank bottoms is provided with condensate liquid return port, is connected with filter module (4).
4. the vapour phase drying system that scene, power station according to claim 3 ± 800kV change of current becomes, is characterized in that: the pipeline that described solvent vapo(u)r entrance is connected with evaporative distillation module (3) is provided with vacuum butterfly valve, and adjacent with solvent vapo(u)r entrance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520605846.8U CN204857384U (en) | 2015-08-12 | 2015-08-12 | On --spot 800kV in power station trades rheologic vapour phase drying system |
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| CN201520605846.8U CN204857384U (en) | 2015-08-12 | 2015-08-12 | On --spot 800kV in power station trades rheologic vapour phase drying system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710809A (en) * | 2015-08-12 | 2017-05-24 | 特变电工沈阳变压器集团有限公司 | Vapor-phase drying system and processing method of on-site +/-800KV converter transformer in power station |
| CN107154303A (en) * | 2017-03-20 | 2017-09-12 | 沈阳诚桥真空设备有限公司 | Compact moves vapour phase drying device |
-
2015
- 2015-08-12 CN CN201520605846.8U patent/CN204857384U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710809A (en) * | 2015-08-12 | 2017-05-24 | 特变电工沈阳变压器集团有限公司 | Vapor-phase drying system and processing method of on-site +/-800KV converter transformer in power station |
| CN107154303A (en) * | 2017-03-20 | 2017-09-12 | 沈阳诚桥真空设备有限公司 | Compact moves vapour phase drying device |
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