CN102806176A - Vacuum pressure lacquer-dipping cluster device - Google Patents

Abstract

The invention provides a vacuum pressure lacquer-dipping device which comprises a vacuum unit, a lacquer-dipping tank and a lacquer-storing tank connected with the lacquer-dipping tank, wherein the bottom of the lacquer-dipping tank is communicated with the bottom of the lacquer-storing tank through a lacquer-conveying pipeline; a lacquer-conveying valve is arranged on the lacquer-conveying pipeline; the lacquer-dipping tank is respectively communicated with the vacuum unit, an air compressor and a nitrogen tank through a communicating valve; an infrared heating device is mounted in the lacquer-dipping tank; the vacuum pressure lacquer-dipping device is characterized in that: the vacuum unit is provided with a roots pump, a first mechanical pump and a second mechanical pump; the first mechanical pump and the second mechanical pump are serially connected with the roots pump; and a low-temperature catcher is mounted on a vacuumizing pipeline between the lacquer-dipping tank and the vacuum unit. A vacuum system provided by the invention is used for quickly vacuumizing till the pressure is below 0.1Pa. The low-temperature catcher is arranged in the pipeline, so that the risk in styrene explosion during the preheating or vacuumizing process of the system is effectively prevented.

Description

The vacuum pressure impregnation cluster device

Technical field

The present invention relates to a kind of vacuum pressure impregnation equipment, in particular, the present invention relates to a kind of cluster device of vacuum pressure impregnation.

Background technology

VPI technology is claimed in vacuum pressure impregnation again, and VPI vacuum pressure impregnation equipment is important process equipment in electrical equipment such as high-voltage motor, transformer, power capacitor and paper insulated high-tension electricity, cable and the electrical material production process, after VPI handles; The good insulation preformance of device, temperature rise reduces, and efficient improves; And can increase mechanical strength, solve the loosening phenomenon of running, prevent insulation faults such as short circuit; Improve the moistureproof ability of device, prolong the life-span of device, improve its anti-electric energy power.This equipment generally by impregnating vessel, paint removal coffin, vacuum-pumping system, compressed air initial stage compression system, gas extraction system, fail back lacquer system, heating system, refrigeration system and electric control system.

Utilize vacuum pressure impregnation; Electric power such as high-voltage motor, transformer, electric equipment are carried out insulation processing; Can reduce bubble, pin hole in the insulating barrier significantly; Thereby improve the class of insulation of electric power such as motor, transformer, electric equipment, received the very big attention and the development of external, domestic electric machine, electrician trade.

Since 1985, the VPI equipment that China's electric power, electrician trade are successively introduced offshore company overlaps more, and as above Hypon steel electricity is repaiied the Japanese vacuum 1.5m VPI of Co., Ltd. equipment that factory introduces; The 3.2m VPI equipment of the German HEDRICH company that Lanzhou Electrical Machinery Plant introduces all has certain representativeness.Though these equipment have greatly driven the technological revolution that China's electric power, electrician trade adopt the VPI novel immersion painting process, these equipment fancy prices do not meet the national conditions of China, and these equipment also exist defective more or less.

For example; Present vacuum pressure impregnation technology comprises vacuum system respectively, redeems each molecular systems such as lacquer system, hydraulic system, pressurizing control system, heating and cooling system, exhaust system shown in accompanying drawing 1, generally adopts a plurality of equipment;, a last technology carries out next technology after accomplishing; This moment just need mobile product, and single product between two process procedures, exists the free time, depositing, piling up of unfinished work can take bigger production space.

Summary of the invention

Discontinuous in order to solve each process procedure of pressure dip painting installation of the prior art, the problem that dipping lacquer efficient is not high the present invention proposes a kind of cluster device of vacuum pressure impregnation; Each sub-systems that vacuum pressure impregnation technology is required be distributed in share vacuum chamber around; According to the sequential steps of vacuum pressure impregnation technology, each sub-systems once is set, and then can realizes the continuous operation of each link of dipping lacquer; Practice thrift the time, improved production efficiency.

In order to solve the problems of the technologies described above, the invention provides a kind of cluster device of vacuum pressure impregnation, it comprises:

The preheating operating room is used to dry and remove workpiece surface and inner moisture;

Storage lacquer operating room is used to store the required paint of dipping workpiece;

The dipping lacquer operating room is used in the surface of the work impregnated with paint;

The levelling operating room, a part of solvent that is used to volatilize prevents in oven dry and curing process, pin hole to occur;

The drying work chamber is used for the workpiece behind the dipping lacquer is dried;

Solidify the operating room, be used for the paint after the oven dry is cured;

Share the vacuum control chamber, be used to realize vacuum degree control preheating chamber, paint room, dipping lacquer chamber, levelling chamber, drying chamber and curing room;

Conveying arrangement, it is indoor to be positioned at shared vacuum control, has a loading end, and this conveying arrangement can make loading end be transported to the place ahead of the hermatic door of each operating room respectively;

Carrier loader is positioned on the loading end of conveying arrangement, and described carrier loader can be got in each operating room, perhaps from wherein withdrawing to loading end by the hermatic door of loading end through each operating room.

Wherein, preferred, described shared vacuum control chamber is positioned at the center;

Wherein, preferred, described preheating operating room, storage lacquer operating room, dipping lacquer operating room, levelling operating room, drying work chamber and solidify the operating room lay respectively at share the vacuum control chamber around;

Wherein, preferred, described each operating room around share the vacuum control chamber around according to said sequence setting successively;

Wherein, preferred, described each operating room is around the equal angular setting all around of sharing the vacuum control chamber.

Wherein, preferred, according to needing each operating room, comprise sharing between vacuum control chamber and each operating room and also be provided with pipeline, be used for realizing vacuumizing, carrying paint, exhaust or realize controlling etc.

Wherein, preferred, also be provided with the PLC control module in the central authorities of equipment, be used to control each technological parameter.

Equipment of the present invention can solve present single workpiece and between two process procedures, exist idle; And then bring unfinished work deposit, pile up the problem that can take bigger production space, can make a plurality of process procedures of dipping lacquer on an equipment, carry out orderly successively carrying out, the phenomenon that does not exist semi-finished product to take up room; Saved the production time cost; Improved operating efficiency, and can use workman still less, human cost also decreases.

Description of drawings

According to accompanying drawing and embodiment the present invention is done further explain below.

Fig. 1 is the sketch map of vacuum pressure impregnation of the prior art.

Fig. 2 is the cluster device of the described vacuum pressure impregnation of the embodiment of the invention.

The specific embodiment

As shown in Figure 2, the invention provides a kind of cluster device of vacuum pressure impregnation, it comprises: the shared vacuum control chamber that is positioned at the equipment center zone; With the preheating operating room that around shared vacuum control chamber, evenly is provided with successively, be used to dry and remove the moisture of workpiece surface and inside; Storage lacquer operating room is used to store the required paint of dipping workpiece; The dipping lacquer operating room is used in the surface of the work impregnated with paint; The levelling operating room, a part of solvent that is used to volatilize prevents in oven dry and curing process, pin hole to occur; The drying work chamber is used for the workpiece behind the dipping lacquer is dried; Solidify the operating room, be used for the paint after the oven dry is cured.

Wherein, share the vacuum control chamber and be used to realize vacuum degree control preheating chamber, paint room, dipping lacquer chamber, levelling chamber, drying chamber and curing room; Conveying arrangement, it is indoor to be positioned at shared vacuum control, has a loading end, and this conveying arrangement can make loading end be transported to the place ahead of the hermatic door of each operating room respectively; Carrier loader is positioned on the loading end of conveying arrangement, and described carrier loader can be got in each operating room, perhaps from wherein withdrawing to loading end by the hermatic door of loading end through each operating room.

The working method of the cluster device of vacuum pressure impregnation of the present invention will be bright through following as an exampleBSEMGVR takeN-PSVSEMOBJ.

1. the carrier loader of the workpiece utilization being shared in the vacuum control chamber gets into the workpiece transportation in the preheating chamber, with charging into nitrogen in the preheating chamber, and is heated to the 60-95 degree, is incubated 1 pressurize one hour, with thorough removal surface of the work and inner residual moisture;

2. open vacuum unit vacuumizes the dipping lacquer chamber pressure is reached below 1, and it is indoor to get into dipping lacquer through the workpiece transportation of carrier loader after with preheating, utilizes the pressure reduction of dipping lacquer chamber and paint room, with insulated paint from paint room then isolated input coat with lacquer;

5. after insulated paint fully soaks into workpiece, the unlatching air compressor will store up paint can and be pressurized to 0.5-0.8MPa, make insulated paint fully soak into workpiece, pressurize 0.5-1 hour;

6. open vacuum unit, pressure release push back the storage paint can to 0.3-0.4MPa with the insulated paint in the impregnating vessel, accomplish paint-dipping process;

7. the workpiece behind the dipping lacquer gets into the levelling operating room through carrier loader, and the hot blast that utilizes natural draft drying or electrical heating or combustion gas heating to produce heats the workpiece of dipping lacquer, and utilizes the volatilization of solvent, and impregnating varnish layer is carried out levelling;

8. the dipping lacquer device behind the levelling needs further to get into the drying work chamber heating further place to go of solvent that coating is inner only from the stage of dry tack free, makes coating start from a kind of semiarid state (not staying fingerprint with light finger extrusion film);

9. the coating after the oven dry gets into through carrier loader and solidifies the operating room, is used for the paint after the oven dry is cured; Solidification process preferably causes the film forming matter polymerization reaction take place and forms dry film through ultraviolet ray and electron beam irradiation irradiation.

The present invention can solve present single product and between two process procedures, exist idle; And then bring unfinished work deposit, pile up the problem that can take bigger production space, can make a plurality of process procedures of dipping lacquer on an equipment, circulate the phenomenon that does not exist semi-finished product to take up room successively; Saved the production time cost; Improved operating efficiency, and can use workman still less, human cost also decreases.

The above is merely preferred embodiment of the present invention, and all claims in the application require within the technical scheme scope of protection, and any modification of being done and/or be equal to replacement and/or improvement etc. all should be included within protection scope of the present invention.The application's protection domain is as the criterion with the technical scheme of claim and the technical scheme that is equal to thereof, and does not receive specification to specifically describe the restriction of part.

Claims (5)

1. vacuum pressure impregnation device comprises: vacuum unit, impregnating vessel, with the tank connected storage paint can of dipping lacquer, the bottom of described impregnating vessel is communicated with through the transmission pipe road with the bottom of storage paint can, is provided with on the transmission pipe to fail to coat with lacquer valve; Impregnating vessel is communicated with vacuum unit, air compressor and nitrogen pot through communicating valve respectively, and described impregnating vessel inside also is equipped with infrared heating device; It is characterized in that: described vacuum unit has lobe pump and first mechanical pump of connecting with lobe pump and second mechanical pump; And on the vacuum lead between described impregnating vessel and the vacuum unit, the cryogenic trapping device is installed.

2. the described vacuum pressure impregnation device of claim 1 is characterized in that can the vacuum in the system being extracted into fast the order of magnitude of 0.1Pa.

3. the described vacuum pressure impregnation device of claim 2 is characterized in that described cryogenic trapping device is meant condenser.

4. the described vacuum pressure impregnation device of claim 3 is characterized in that described cryogenic trapping device preferably can be with ducted gas cooled to below-20 ℃.

5. the method for using of the described vacuum pressure impregnation device of claim 1 is characterized in that may further comprise the steps:

1. with workpiece pack into impregnating vessel and the sealing;

2. open vacuum unit vacuumizes impregnating vessel pressure is reached below the 1Pa;

3. open communicating valve, the input carbon dioxide makes impregnating vessel pressure reach 0.10-0.25MPa, opens infrared low-temperature heating device simultaneously, the temperature that keeps impregnating vessel between the 60-85 degree, duration 1-2 hour;

4. the open vacuum unit is evacuated to below the 30Pa, pressurize 0.5-1 hour, makes work-piece cools, then the isolated input lacquer;

5. after insulated paint fully soaks into workpiece, the unlatching air compressor will store up paint can and be pressurized to 0.5-0.8MPa, make insulated paint fully soak into workpiece, pressurize 0.5-1 hour;

6. open vacuum unit, pressure release push back the storage paint can to 0.3-0.4MPa with the insulated paint in the impregnating vessel, accomplish paint-dipping process.

Images