CN208912673U - The cleaning system of pollution by polychlorinated biphenyles transformer - Google Patents

Abstract

The project of the utility model is effectively to clean using a small amount of detergent by the transformer of pollution by polychlorinated biphenyles.The utility model provides a kind of cleaning system of clean-in-place transformer, it is included at least: gasification rinse bath, heating device, cleaning agent returnable, cooler, liquefying plant, decompressor and by the piping interconnected of these devices, and these devices are configured in accommodating mechanism.Use cleaning agent, by the transformer turned upside down of pollution by polychlorinated biphenyles and the inside of the gasification rinse bath will be configured at, cleaning agent is supplied on the inside of to the gasification rinse bath, it is subatmospheric pressure by the inner setting of the gasification rinse bath, carrying out heating to the gasification rinse bath makes the cleaning agent gasify, transformer can be cleaned as a result,.

Description

The cleaning system of pollution by polychlorinated biphenyles transformer

Technical field

The utility model relates to (on-site) at the scene oil remaining in transformer is cleaned using cleaning agent it is clear Wash system.

Background technique

Nowadays environmental pollution becomes serious problem, is difficult to discard while trade waste is directly kept intact.Especially Trade waste containing harmful substance needs to carry out the removing operation by the harmful substance of cleaning etc..For example, more chlorine connection Benzene dissolves, therefore be widely used in the change of electrical equipment class well since electrical insulating property is good in organic solvent and oil Depressor (trance), the insulating oil of capacitor, adhesive, wax, lubricant etc..But Polychlorinated biphenyls has high toxicity to organism, Such as carcinogenicity, skin lesion, visceral lesion, cryptorrhea etc. also has the property for being easy to accumulate in adipose tissue, at present It has been prohibited to produce.Therefore, the waste needs of the electrical equipment for producing and using in the period of allowing using Polychlorinated biphenyls etc. Polychlorinated biphenyls is removed by cleaning.But it is well known that as being used as insulating oil using the mineral oil for containing Polychlorinated biphenyls The transformer of electrical equipment, due to causing washing and cleaning operation difficult more than the insulation oil mass that uses inside it and internal structure is complicated, with The transformer for not cleaned and directly being taken care of in this way is caused largely to exist.Wherein, body weight is 500 kilograms or so small-sized Transformer largely exists, because the cleaning operation of pollutant is highly difficult, is largely placed.

In the past, the cleaning for remaining in the insulating oil containing Polychlorinated biphenyls of electrical equipment is by the way that electrical equipment to be put into clearly Washing trough is simultaneously immersed in what the method washed off again in the solvent of cleaning carried out.For example, Patent Document 1 discloses one kind repeatedly Carry out the vacuum cleaned processing method of the first processing and second processing, wherein first processing are as follows: the place that will be polluted by PCB Reason object is put into sealable cleaning container, vacuumizes to cleaning container inside, the liquid ceanser of hydro carbons is added, is surpassed Cleaning is shaken in sound wave cleaning；The second processing are as follows: remove the cleaning agent in cleaning container.

Existing technical literature

Patent document

Patent document 1: Japanese Patent Laid-Open 2003-145069

Summary of the invention

In previous general cleaning operation, need to move in transformer in rinse bath or cleaning container.Previous Cleaning operation in, due to needing that transformer is immersed in the rinse bath for filling cleaning solvent, exist need it is a large amount of Cleaning solvent and the waste liquid quantitative change that must handle more than problem.In addition, transformer device container-like in this way is become as, it cannot In abundant cleaning container.In the internal transformer configured with a large amount of lamination objects since its internal structure complexity disassembling section is difficult, It can be observed to clean non-uniform problem after leading to cleaning.On the other hand, although miniature transformer is had also contemplated without clear It washes and the method for burning disposal, but the burning of transformer is at high cost, treatment effeciency is also low.

The utility model provides a kind of cleaning system, and the cleaning system is using the side for not discharging waste liquid or exhaust gas as possible Method, use cleaning agent as a small amount of as possible remove the oil (hereinafter referred to as " pollution containing Polychlorinated biphenyls in multiple transformers simultaneously Oil ") so that transformer reaches the state that can be discarded.

One mode of the utility model is a kind of cleaning system, cleans transformer at the scene, the cleaning system is extremely Less include: gasification rinse bath, heating device, cleaning agent returnable, cooler, liquefying plant, decompressor and fill these Piping interconnected is set, and these devices are configured in accommodating mechanism, is cleaned in closed system or semi-closed system The above system of transformer is characterized in that, will be cleaned by the transformer turned upside down of pollution by polychlorinated biphenyles and configuring in the gasification The inside of slot, and to supply cleaning agent on the inside of the gasification rinse bath, it is subatmospheric by the inner setting of the gasification rinse bath Pressure, which is heated, make the cleaning agent gasify, using the cleaning agent after the gasification to the transformer into After row cleaning, the cleaning agent after the gasification is liquefied by the cooler and the liquefying plant and flows back into gasification cleaning Slot.

The effect of utility model

The cleaning system of present embodiment can be movable, it is possible to be easily moved to save contaminated transformation The scene of device.Using the system of present embodiment, multiple a large amount of existing transformations by pollution by polychlorinated biphenyles can be cleaned simultaneously Device.The system of present embodiment can directly clean the inside that cannot install the miniature transformer of drain valve etc..Further, it uses The cleaning that the system of present embodiment carries out pollution transformer does not need vast place for cleaning operation, and cleaning agent Usage amount is few.

Detailed description of the invention

Fig. 1 is the schematic diagram for illustrating cleaning system in embodiment.

Fig. 2 is the schematic diagram for illustrating the cleaning system in other embodiments.

Fig. 3 is the figure for illustrating the appearance of the cleaning systems transformer using embodiment.

Symbol description

1 gasification rinse bath

101 container portions

102 partitions

10 transformers

11 iron cores

12 windings

13 insulating materials

14 tap conversion equipments

15 insulation grease chambers

20 system accommodating containers

31 liquid accumulate container

32 cleaning agent returnable

4 heating devices

51,52 cooler

61,62 condenser

7 demisters

81 vacuum pumps

82 draining separators

9 activated carbon towers

201,202,203,204 switch valve

Specific embodiment

As the transformer for the object for using cleaning systems involved in embodiment, for the voltage for converting AC power Power equipment, using magnetic-coupled multiple coils as main composition part.According to the type of insulant, transformer can be divided into oil immersion Formula transformer, mold transformer (Molded transformer) and gas-insulated transformer, but in the present specification, it refers in particular to make Use oil as the oil-immersed transformer of insulant.Oil-immersed transformer has: oil capacity is the large scale equipment of tens of thousands of~hundreds of thousands of kL, The medium size installations sum number hectoliter small device below of kL from hundreds of to thousands of.Before in the insulating oil of oil-immersed transformer Using Polychlorinated biphenyls, largely there is the transformer that untreated internal residual has Polychlorinated biphenyls.It will be due to above-mentioned waste Cleaning object of the difficult and remaining transformer of processing as the method.System involved in embodiment is particularly advantageous for The cleaning of the miniature transformer of drain valve etc. cannot be especially mounted directly.

The Polychlorinated biphenyls (hereinafter referred to as " PCB ") of the object removed as the system for using present embodiment is intramolecular The adopted name of the quantity of the existing chlorine 209 kind isomers different with position does not imply that specific a type of chemical combination Object.

The system of present embodiment includes at least: gasification rinse bath, heating device, cleaning agent returnable, cooler, liquid Makeup is set, decompressor and by the piping interconnected of these equipment.The rinse bath that gasifies is for placing the system of utilizing in inside The container of the transformer of cleaning.Rinse bath gasify mainly by that can store the container portion of multiple transformers and for placing transformer Lattice constitute.Container portion is the volume portion of gasification rinse bath, and lattice is the plate-shaped member for configuring transformer.Container Portion is formed with the metal of resistance to decompression operation or plastic material etc..The preferred lattice shape of lattice, can be used timber, gold Belong to silk screen, barrier etc..Container portion has the miniature transformer that can configure at least multiple (such as 5 or more) capacity numbers hectoliter Or the volume of medium-sized transformer of the capacity from hundreds of to thousands of liter.By using the gasification rinse bath with this size, The cleaning of multiple miniature transformers can be carried out simultaneously.As described above, lattice is timber or wire with lattice shape Portion's material of the plate of net, barrier etc., can be by gasification rinse bath inside division at transformer incorporating section and cleaning agent introduction part.Separately On the one hand, gasification rinse bath is needed by there is the material of durability to be made cleaning agent.Gasifying, it is preferable to use gold for rinse bath Belong to or plastic material is formed.It is equipped with the liquid for being placed in advance in cleaning agent inside gasification rinse bath and accumulates container, herein Cleaning agent can be placed in advance in.Here, it as cleaning agent, is preferably able to dissolution or at least disperses contaminated oil remaining in transformer And cleaning agent than the contaminated oil low boiling point.As such cleaning agent, hydrocarbon solvent, halogen based solvents etc. can be used. It is, for example, possible to use the alkane that carbon atom number is 8~15, alkene, and (especially carbon atom number is 11 for cycloalkane or olefines solvent ~13 alkane or olefines solvent) or, the halogen based solvents that carbon atom number is 1~12.Specifically, easy to dissolve or dispersion The hydrocarbon solvent of the remaining oil (contaminated oil) containing PCB in the inside of transformer 1, can be used using dodecane as principal component Commercial solvents, such as AQUA Solvent G71 (AQUA Co., Ltd.), HC-370 (TOSOH Co., Ltd), MD-250 (Musashi Techno Chemical Co., Ltd.), Linpar12 (Sasol Limited), MACSOL-P (NSI plants of formulas Commercial firm) etc..In addition to this, water, water solvent, alcohol etc. according to circumstances also can be used.

Heating device, as long as capableing of at least part of heating utensil of heating and gasifying rinse bath, so that it may arbitrarily make With.Can enumerate as such as strip heater, steam heater, oil bath, electric heater, electromagnetic heater etc. directly or Device inside the container portion of indirect heating gasification rinse bath.Heating device can be set in the inside of gasification rinse bath, can also The outside of gasification rinse bath is arranged in.

Cleaning agent returnable is for generating after recycling the contaminated transformer of the cleaning systems of present embodiment Pollution cleaning agent container.As noted previously, as hydrocarbon solvent can be used, halogen based solvents etc. are used as cleaning agent, therefore Cleaning agent returnable is the container with the durability that can store these solvents.

Cooler is connect with gasification rinse bath.Cooler is for keeping the cleaning agent in gasification rinse bath internal gasifier cooling It condenses and it is made to be used as liquid reflux to the equipment in gasification rinse bath again.As cooler, as long as cleaning agent can be made The device of cooling condensation can be used arbitrarily, and reflux condensing tube can be used for example.Cold also can be set in cooler (chiller), to adjust the fluid temperature being back to inside gasification rinse bath.

Liquefying plant cannot be in the gasification cleaning agent of above-mentioned cooler total reflux for capturing and separating.In order to the greatest extent may be used Organic washing agent be can be reduced to operating this system under the closing of external discharge or semi-closed system, particularly preferably set in advance Set liquefying plant.Liquefying plant, as long as can capture, separate gasification cleaning agent can arbitrarily use.It is, for example, possible to use Demister or heat exchanger.In addition, for the final cleaning agent etc. for capturing the device capture that is not liquefied completely, it may further Activated carbon tower is set.Cold can also be set in liquefying plant to adjust temperature.

Decompressor is the device for being depressurized to whole system.By being carried out using decompressor to whole system Decompression can make the temperature to gasify to cleaning agent reduction.Decompressor, as long as whole system can be depressurized Device can be used arbitrarily.Vacuum pump can be used for example.

Prepare multiple by the piping interconnected of these devices.As piping, can be used has organic washing agent The metal conduit or conducting wire of durability.

The system of embodiment includes: these devices, by the piping interconnected of these devices and an appropriate number of is opened Valve is closed, these are configured at accommodating mechanism and is formed.As accommodating mechanism, can be used can provide the configuration of each device The container of position, such as accepting rack or containing box.By the way that each device is compactly configured in accommodating mechanism in this way, Whole system can become movable.If by the system loading being made of these devices in the mobile mechanism of 1 trolley etc., Even when the place of keeping pollution transformer is remote, whole system can also be moved to this scene.Store the storage of each device The mechanism that can be decomposed also can be used in mechanism.Therefore, thus, it is possible to be suitable for that decomposing system is whole, with diversified shape load It is placed in mobile mechanism, system is suitably assembled in the place of keeping pollution transformer.

Next, the cleaning system using present embodiment cleans the transformer for polluting oily pollution by PCB Method is illustrated.The cleaning system of the present embodiment of clean-in-place transformer includes at least: gasification rinse bath, heating dress It sets, cleaning agent returnable, cooler, liquefying plant, decompressor and the piping for being connected with each other these devices, and these are filled It sets and is configured in accommodating mechanism.The cleaning system for the present embodiment that use site cleans transformer is cleaned by more chlorine The method of the transformer of biphenyl pollution is cleaned the following steps are included: by transformer configuration in the inside of gasification rinse bath to gasification The inside of slot supplies cleaning agent, and the pressure for setting the inside of rinse bath is subatmospheric, and heating and gasifying rinse bath cleans gasification It is warming up to the boiling point of cleaning agent or more on the inside of slot, cleaning agent is made to gasify in the inside of the gasification rinse bath.The cleaning method It is to wash off the contaminated oil in transformer with cleaning agent at all.It is well known that structure and iron core with multiple iron plate laminations It is configured at its internal transformer, also remains contaminated oil between the iron plate and iron plate of lamination, it is non-to clean these contaminated oils completely It is often difficult.Firstly, supplying cleaning agent to the inside of gasification rinse bath, heating and gasifying rinse bath simultaneously makes to supply to the cleaning agent of inside Gasification, thus make side by side in gasification rinse bath in transformer on the inside of existing for contaminated oil be dissolved or dispersed in cleaning agent, this In gasification generally refer to the phenomenon that liquid becomes gas, it is general including the evaporation from liquid surface and the boiling from liquid internal It reads.If supplying the cleaning agent as liquid to the inside of transformer, then heat, is steamed first from cleaning agent surface Hair.When temperature on the inside of transformer is increased to almost reach the boiling point of cleaning agent, boils, clean from cleaning agent inside Agent is in the state that is gasified totally.The cleaning agent of gasification diffuses to the space inside gasification rinse bath, to the transformer reached side by side Inside, contacted with the component parts of configuration.

Here, the mechanism of remaining contaminated oil on the inside of gasification cleaning agent cleaning transformer is illustrated.As in transformer Inside configuration winding it is the same, to the object for the structure for having multiple plate substances with lamination with carry out as former state cleaning be very tired Difficult.However, according to the Quasi two-dimensional boiling under reduced pressure of loose sheet et al. (Proceedings of the First Pacific Thermal Engineering Conference,PRTEC,March 13-17,2016), the solvent in vaporized state enters the clearance portion of laminated body under reduced pressure, and herein in condensation repeatedly and The phenomenon that exchange of solvent of clearance portion is observed while bumping.Infer the same of the pressure inside the container of adjustment air-tight state When, if the solvent of vaporized state is contacted with laminate, the cleaning agent of vaporized state enters the gap portion of laminate and molten Solution or dispersion are present in the contaminated oil of the part, exchange while condensation repeatedly and bumping with new cleaning agent.Present embodiment System be conceived to this viewpoint, using making to gasify, cleaning agent is contacted with the inside transformer of contaminated oily pollution, until being laminated The gap portion of object is also cleaned.Here, in this embodiment, do not need using the special device for making cleaning agent gasify. In the system of present embodiment, the cleaning agent gasification inside gasification rinse bath is directly made using heating device.Therefore, this is used The implementation of the cleaning method of the system of embodiment does not need vast space.

Then, it is illustrated using system of the Fig. 1 to present embodiment.Fig. 1 is the cleaning system for illustrating present embodiment Schematic diagram.In Fig. 1,1 is gasification rinse bath, and 32 be cleaning agent returnable, and 4 be heating device, and 51 and 52 be cooler, 61 and 62 be cold, and 7 be demister, and 81 be vacuum pump, and 82 be draining separator, and 9 be activated carbon tower, 201,202,203 and 204 be the switch valve for opening and closing the flow path that cleaning agent flow path and decompression flow path is arranged in.By beating on and off These switch valves are closed, the pressure for carrying out regulating system can be realized the importing and discharge of cleaning agent.In addition, herein as cleaning pair As the transformer of object is not shown.Each system unit of the system of present embodiment, diagram is accommodated in accommodating container 20.As Accommodating container 20, as long as can safeguard protection these system units, be suitable for that the container stored can be used arbitrarily, example Such as, accepting rack or containing box be can use.It can will be each with the state (state as shown in Figure 1) that transformer can directly be arranged The inside of accommodating container 20 is arranged in a system unit.It in other words, as shown in Figure 1, can be pre- in the state that certain degree assembles Each system unit is first arranged in the inside of accommodating container 20, connects suitable piping at the scene, and carry out as shown in Figure 3 Assembling.Alternatively, as shown in Fig. 2, each system unit sporadically can also be contained in accommodating container 20 respectively in advance, scene Connecting pipe is simultaneously assembled as shown in Figure 3.In Fig. 2, Fig. 3, the solid line of all parts is connected with each other as piping.For example, Fig. 1, The system for the embodiment recorded in Fig. 2 can be with lorry compartment comparable size.The system of embodiment, can using truck etc. as Mobile mechanism is transported together with system.

Then, it is illustrated using cleaning method of the Fig. 3 to the cleaning system for using present embodiment.Fig. 3 is to using The figure that the cleaning method of the cleaning system of present embodiment is illustrated.In Fig. 3,1 is gasification rinse bath, and 32 be cleaning Agent returnable, 4 be heating device, and 10 be transformer.Transformer 10 is the transformer of so-called oil-immersed transformer type, It is to use insulant as the transformer of oil.Transformer 10, mainly by being constituted with lower component: iron core 11, winding 12, insulating materials 13 (i.e. oily), tap conversion equipment 14 and insulation grease chamber 15.For with paper, timber, other transformations of the production such as ware The component parts of device is not shown.In detail in this figure, transformer 10 is the capacity of oil in hundreds of litres small device below.

It will be on the partition 102 for the inside that gasification rinse bath 1 is placed at by the transformer 10 of PCB pollution oily pollution. At this point, by 10 turned upside down of transformer and being placed on partition 102.Although needing the container portion 101 according to gasification rinse bath 1 Volume, but contaminated transformer 10 can configure multiple such as 5 with first-class.The bottom of transformer 10 be equipped with hole and make from The piping that switch valve 202 reaches gasification rinse bath 1 is connected with the hole.To be arranged in gasification rinse bath 1 lower part (partition 102 The part of downside) liquid accumulate container 31 and supply cleaning agent, as cleaning agent, be preferably able to dissolution or at least disperse transformer Remaining contaminated oil and the boiling point liquid lower than the contaminated oil in 10.As such cleaning agent, can be used hydrocarbon solvent or Halogen-based solvent etc..It is, for example, possible to use the alkane that carbon atom number is 8~15, alkene, and cycloalkane or olefines solvent are (especially The alkane or olefines solvent that carbon atom number is 11~13), the halogen based solvents that carbon atom number is 1~12.Specifically, readily soluble The hydrocarbon solvent of the remaining oil containing PCB in inside of solution or dispersion transformer 1, can be used using dodecane as main component Commercially available solvent, such as AQUA Solvent G71 (AQUA Co., Ltd.), HC-370 (TOSOH Co., Ltd), MD-250 (Musashi Techno Chemical Co., Ltd.), Linpar12 (Sasol Limited), MACSOL-P (NSI plants of formulas Commercial firm) etc..In addition, water, water solvent, alcohol etc. according to circumstances also can be used.

It imports cleaning agent and operates decompressor (vacuum pump 81), to subatmospheric inside decompression gasification rinse bath 1 Pressure.The bottom and/or peripheral portion for being mounted on gasification rinse bath 1 are utilized in the state of making decompressor keep operating 4 heating and gasifying rinse bath 1 of heating device.As heating device 4, as long as capableing of at least one of heating and gasifying rinse bath 1 The heating utensil divided can be used arbitrarily.As heating device, it can be cited for example that strip heater, steam heater, oil It bathes, hot plate, the mechanism that directly or indirectly gasification rinse bath 1 is heated as electromagnetic heater etc..In Fig. 3, The inside of gasification rinse bath 1 and periphery are provided with heating device 4.When using 4 heating and gasifying rinse bath 1 of heating device, The temperature of 101 inside of container portion rises, and the cleaning agent for accumulating the inside in container 31 in liquid starts to gasify.The cleaning of gasification Entire inside diffusion of the agent in gasification rinse bath 1.As noted previously, as hole and the piping company of the bottom of transformer 10 is arranged in It connects, so the cleaning agent of gasification effectively passes through the inside of transformer 10.In this way, the cleaning agent of gasification is all diffused into configuration The inside of transformer 10.Until the temperature that also may proceed to cleaning agent gasification (evaporation) using the heating of heating device 4.But It is preferred that being heated to gasification rinse bath 1, so that reaching the temperature of cleaning agent boiling, i.e., more than the boiling point of cleaning agent.Entire The gasification cleaning agent that gasification rinse bath 1 is spread can also be contacted with the surface of the inner wall of transformer 10 or the component parts of transformer 10 And condense, the high contaminated oil for remaining on 10 inside of transformer is dissolved or dispersed in cleaning agent with cleaning agent compatibility.As above It is described, the various component parts of cored 11, winding 12, tap conversion equipment 14 etc. are configured on the inside of transformer 10, structure is non- Often complicated, even so, but the cleaning agent that gasifies can be uniformly spread to the gap between these component parts.When gasification is cleaned When agent contacts inside and the component parts of transformer 10, gasification cleaning agent condensation, and dissolve or disperse the contaminated oil of the part.It is logical Cross the part that dissolution or dispersion contaminated oil occur using gasification cleaning agent for condensation heat heating.As a result, in transformer 10 with gasification The part and discontiguous part of cleaning agent contact generate Temperature Distribution.Then, the gasification cleaning agent of supply is not being cleaned Or it cleans the low part of insufficient temperature and is easy to condense.The inside of transformer 10 can be equably cleaned in this way.With The contaminated oil of 10 internal residual of transformer that the cleaning agent that this mode is supplied to 10 inside of transformer makes dissolves or dispersion.Cleaning becomes The cleaning agent for dissolving or dispersing inside depressor 10, by contaminated oil is discharged to transformer by the top of reversion configuration transformer 10 10 outside, and container 31 is accumulated in liquid by grid-shaped baffle plate 102 and is accumulated.

Here, it is supplied to the amount of the cleaning agent on the inside of gasification rinse bath, according to the capacity of the transformer as cleaning object Total amount variation.For example, if the capacity total amount of supply gasification rinse bath 20% hereinafter, especially 10% cleaning below Agent, then since gasification cleaning agent can be made to be diffused on the inside of entire gasification rinse bath and transformer, it is possible to which dissolution disperses Contaminated oil is without leaking existing for inside transformer.According to circumstances, be only supplied gasification rinse bath capacity total amount 5% with Under cleaning agent can also clean all contaminated oils on the inside of transformer.For example, if the volume of gasification rinse bath is 10, 000L can then supply 500L (in some cases in the cleaning agent less than 400L) to gasification rinse bath.Or utilize heating The heating of device may proceed to degree as the temperature for the cleaning agent gasification for reaching supplied in gasification rinse bath, preferably up to To the degree of the boiling point of cleaning agent.Although also maintaining the pressure in gasification rinse bath according to the pressure in gasification rinse bath Power is subatmospheric and in the case where being cleaned, and usually will be heated to 50 DEG C~250 DEG C in gasification rinse bath, and be preferably heated to The temperature of 100 DEG C~200 DEG C of range.

If decompressor as described above is arranged, cleaning agent can be made to gasify at relatively low temperatures.Due to being Inner setting unite at than external low pressure, so cleaning agent will not leak into outside, and igniting for cleaning agent can be prevented (on fire).As decompressor, as long as the device depressurized in gasification rinse bath 1 can arbitrarily can be used, but It is for example, using the vacuum pump for being connected to gasification rinse bath 1 or cleaning agent flow path with flow path via decompression.FIG. 1 to FIG. 3 In illustrate setting vacuum pump 81 mode.For example, when using dodecane as cleaning agent, using decompressor by system Pressure set to about 0~70kPa, cleaning agent can be made to gasify if the temperature in transformer to be set as to 200 DEG C of degree. In addition, cleaning agent flow path and decompression be provided with flow path for switching the flow path switch valve (201 in figure, 202,203, 204), by switching on and off valve, the adjustable pressure to gasify in rinse bath 1, and importing and the row of cleaning agent are carried out Out.

Although it is not shown, but the pressure detection mechanism for detecting the pressure in gasification rinse bath 1 also can be set.As a result, may be used To confirm whether the inside of transformer 10 is depressurized in advance.It is controlled alternatively, it is also possible to the information that is detected based on pressure detection mechanism Switch valve processed, to adjust the pressure in gasification rinse bath 1.In addition, though not shown, but also can be set can supply nitrogen or The inactive gas supply tank of the inactive gas of rare gas etc. and the gas supplying tank is connect with gasification rinse bath 1 Inactive gas supply line, and the inactive gas switch valve for switching inactive gas supply line.Therefore, work as pressure When tension detection mechanism detects abnormal pressure, the heating using heating device 4 can be stopped, and inactive gas is supplied to gas Change in rinse bath 1.That is, in case of emergency, by supplying inactive gas to gasification rinse bath 1, can will heat The system of state is transformed into safe condition.

By the cleaning of the transformer 10 for enabling the reflux of vaporized cleaning agent to carry out in closed system or semiclosed Time as defined in being carried out in system.After cleaning operation, stop the heating for utilizing heating device 4, and cooling gasification rinse bath 1.It, can if cooling body is arranged in gasification rinse bath 1 although the cooling body of gasification rinse bath 1 is not shown in Fig. 1 With the gasification rinse bath 1 of rapid cooling heating.When temperature inside transformer 10 reduces, gasification cleaning agent liquefies and accumulates In 10 bottom of transformer.The cleaning agent for accumulating in gasification 1 bottom of rinse bath is discharged to cleaning agent returnable 32 and by its time It receives.The oil polluted by PCB can be expelled to from gasification rinse bath 1 in this way outer.It can be in process country without public affairs In the treatment facility that evil is assert, what the pollution cleaning agent being recovered can for example burn etc. is discarded.

After the cleaning operation of above-mentioned transformer 10, opens gasification rinse bath 1 and take out each transformer, by these transformers It dismantles respectively and is separated into each component parts.For example, transformer 10 is separated into each component parts, it substantially can be by its point It is divided into iron core 11, winding 12, tap conversion equipment 14 and tank 15.Iron core 11 is the Wound core that lamination has multiple silicon strips Or it is bonded with the laminated iron core of multiple silicon strips, preferably it is disassembled into each silicon strip.In addition, winding 12 uses copper wire, dimethoxym ethane Flat type copper wire, paper roll flat type copper wire, electro-deposition cover with paint, lacquer, colour wash, etc. flat type copper wire, dislocation conductor and copper strips etc., for example, when use paper roll flat type copper wire as When winding 12, it is preferably further disassembled into flat type copper wire portion and roll paper portion, when using dislocation conductor, preferably further by it It is disassembled into flat type copper wire and exterior insulator.Similarly, tap conversion equipment 14 is disassembled into tapping plate and tap changer etc. Component parts minimum unit.Above-mentioned disassembly transformer is simultaneously meant transformer disassembly by component parts decomposition until becoming It is shaped to the minimum unit component of component parts or the component of minimum unit as far as possible.In the present specification, term " constituting portion Part " includes the meaning of the component of minimum unit obtained from further dismantling the component parts of transformer.

PCB's can be measured at least part of the component parts so obtained by the transformer that cleaning is completed in disassembly Residual simultaneously checks.As long as checking to by dismantling at least part in the component parts that the transformer for completing to clean obtains Progress is particularly preferably easy to remain and be difficult to the iron core contacted with cleaning agent to the PCB in component parts and winding carries out It checks.The residual of PCB can be for example, by side specified in " processing of waste and the relevant law of cleaning " in component parts Method is measured.When PCB remaining is not detected in component parts, can directly abandon at that by dismantling obtained composition Component.

On the contrary, when in one of component parts by detect PCB when, preferably in component parts jet cleaner And component parts is cleaned again.It, can be only to the composition of detection when detecting PCB in a part in component parts Component jet cleaner.The whole component parts jet cleaners that disassembly can also be obtained, then cleaned.Cleaning step again The cleaning agent of middle injection is the hydrocarbon solvent that can be used for cleaning, halogen based solvents etc..It is 8 it is, for example, possible to use carbon atom number ~15 alkane, alkene, cycloalkane or olefines solvent (especially carbon atom number be 11~13 alkane or olefines solvent) Or, the halogen based solvents that carbon atom number is 1~12.Specifically, it can be used and commercial solvents as main component made with dodecane, Such as AQUA Solvent G71 (AQUA Co., Ltd.), HC-370 (TOSOH Co., Ltd), MD-250 (Musashi Techno Chemical Co., Ltd.), Linpar12 (Sasol Limited), MACSOL-P (NSI Co., Ltd.) etc..In addition to this, Water, water solvent, alcohol etc. according to circumstances also can be used.Use is identical with cleaning step particularly preferably in cleaning step again Cleaning agent., can be to whether detecting that PCB is examined again in the component parts cleaned again again after cleaning step.In this way, It can be repeated several times checking step and again cleaning step, as needed the component parts of PCB can be washed off completely.Completely The each component parts for washing off PCB can be used as offal treatment.

Then Fig. 3 is used, the application method of the cleaning system of embodiment is specifically described.By inside by PCB dirt 10 turned upside down of transformer for contaminating oily pollution, as shown in figure 3, by cooler 51,52 and cold 61,62, demister 7, vacuum pump 81, separator 82, detergent container 2, cleaning agent returnable 32, activated carbon tower 9 is drained to be separately connected.Cleaning agent importing is matched The liquid for being placed in gasification 1 lower inside of rinse bath accumulates container 31.Gasification rinse bath 1 is closed, valve 201 and 204 is turned on the switch, is closed Close switch valve 202 and 203 and make vacuum pump 81 operate, with to gasification rinse bath 1 inside depressurize.In switch valve 201 and 203 For open state and 202 and 204 be close in the state of make heating device 4 operate.At this moment operate vacuum pump 81.It imports The cleaning agent of gasification rinse bath 1 starts to evaporate, more than the boiling point that the temperature of 1 inside of gasification rinse bath almost reaches cleaning agent When, gasification cleaning agent is diffused into inside gasification rinse bath 1.Cooler 51 is connect with gasification rinse bath 1, with cooler 51 and is become Mode between the bottom of depressor 10 configured with switch valve 202 is connected by piping.The gas being discharged to outside gasification rinse bath 1 Change cleaning agent and become liquid again in cooler 51, and flows back into inside gasification rinse bath 1.After this manner in continuous heating and decompression Under, gasification cleaning agent reaches between each component parts of transformer 10 of the configuration inside gasification rinse bath 1, is condensing repeatedly PCB contaminated oil is dissolved or dispersed with exchanging while bumping.Make the cleaning agent reflux stipulated time of gasifying in this way, together Behind the inside of Shi Qingxi transformer 10, the operating of heating-stopping apparatus 4 and vacuum pump 81, cooling gasification rinse bath 1.Gasification is clear Lotion liquefies and falls on bottom and the accumulation of gasification rinse bath 1.Temperature reduction inside gasification rinse bath 1 keeps gasification cleaning agent complete When full liquefaction, valve 202 is turned on the switch, the liquid for accumulating in gasification 1 lower part of rinse bath is accumulated to the pollution cleaning agent in container 31 It is discharged to the outside of gasification rinse bath 1, and is recycled to cleaning agent returnable 32.At this point, can also will from it is (not shown) not The inactive gas of active gas supplying tank dodges the inside for being charged to gasification purge tank 1 and squeezes out cleaning agent.It carries out as needed more Cleaning operation as secondary repetition is to be completely transferred to cleaning agent returnable for the PCB contaminated oil inside the rinse bath 1 that gasifies 32。

Claims (1)

1. a kind of cleaning system includes at least for the cleaning system cleaned at the scene to transformer: gasification rinse bath adds Thermal, cleaning agent returnable, cooler, liquefying plant, decompressor and by the piping interconnected of these devices, these Device is configured in accommodating mechanism；

The system cleans transformer in closed system or semi-closed system, which is characterized in that will be by Polychlorinated biphenyls dirt The transformer turned upside down of dye is simultaneously configured in the inside of the gasification rinse bath, supplies cleaning agent to the inside of the gasification rinse bath, It is subatmospheric pressure by the gasification rinse bath inner setting, which is heated, the cleaning agent gas is made Change, after being cleaned using the cleaning agent after the gasification to the transformer, is liquefied the gas by the cooler and the liquefying plant Cleaning agent after change makes the liquefied cleaning agent flow back into the gasification rinse bath.