CN205789442U - A kind of Novel DC sleeve pipe - Google Patents

Abstract

This utility model relates to DC bushing, it is specifically related to a kind of Novel DC sleeve pipe, including binding post and upper insulator, being provided with conducting rod and capacitor core inside upper insulator, conducting rod top is connected with binding post, is provided with mounting flange bottom upper insulator, mounting flange fixes with flange sleeve, connecting bottom flange sleeve and have lower insulator, be provided with base bottom lower insulator, Novel DC sleeve pipe is additionally provided with oil level control unit and oil body cold filtration unit；Technical scheme provided by the utility model can carry out Based Intelligent Control to the transformer oil oil level in sleeve pipe, transformer oil can also be filtered reducing while transformer oil operating temperature, be prevented effectively from the generation of perils such as setting off an explosion because of sleeve pipe inner oil shortage, the factor such as make moist.

Description

A kind of Novel DC sleeve pipe

Technical field

This utility model relates to DC bushing, is specifically related to a kind of Novel DC sleeve pipe.

Background technology

According to the literature, from the 1950's since D.C. high voltage transmission puts into operation, through 50 Development for many years, high pressure, super high voltage direct current electricity transmission technology gradual perfection.Last century 70-80 In the age, the former Soviet Union carried out extra-high voltage direct-current transmission engineering practice, and its capital equipment passes through More than 1000 kilometer of transmission line of electricity is tested and built in factory.International Industry circle and academia are to extra-high voltage The research and development of HVDC Transmission Technology is never interrupted, the particularly former Soviet Union and Japan, with Construction and the operation of extra-high-voltage alternating current engineering, against the accumulation of operating experience for many years, it is crucial The design of equipment, manufacturing technology etc. all have evolved into ripe.But, grinding of extra-high voltage direct-current equipment During Faing, design and production for extra-high voltage direct-current sleeve pipe yet suffer from problems.

Sleeve pipe is widely used a kind of electrical equipment in power system, and it can make high-voltage connection pacify Entirely through grounding body or the fuel tank cap of electrical equipment, being connected with other electrical equipments, sleeve pipe was both There is insulating effect, the most again lead-in wire is played a supportive role.Oil-impregnated Paper Condenser Bushing in History has absolutely Edge coefficient is high, bigger than electric capacity, and the advantages such as rational in infrastructure and volume is little, at 66kV and above electricity Pressure grade is commonly used.In long-term running, sleeve pipe can be by long-term maximum work Make the effect of voltage, the reason such as itself also can gradually degrade, make moist because of dielectric and occur All kinds of accidents.Wherein, sleeve pipe oil starvation can make moisture invade inside pipe casing, causes dielectric to be subject to Tide, can cause shelf depreciation in sleeve pipe, even causes blast, and the direct current commonly used at present Sleeve pipe does not make moist for oil starvation and is designed with oil body filtration etc..

At notification number CN203415386U, date of declaration is the practical new of on January 29th, 2014 Type patent discloses a kind of water-inlet-proof blast protection oil-impregnated paper condenser type transformer bushing, including wiring Terminal, conservator, upper insulation, mounting flange, flange cylinder, lower insulation, voltage equalizing ball and conduct The capacitor core of major insulation, is provided with sealing brute spring in conservator；Conservator is provided with Inside pipe casing is made to keep the charging valve of pressure-fired；Mounting flange is provided with and inside pipe casing The Pressure gauge of connection.Although this oil-impregnated paper condenser type transformer bushing is provided with in conservator and makes set The internal charging valve keeping pressure-fired of pipe, but this oil-impregnated paper condenser type transformer bushing is not having Arrange in the case of pressure controlling device just toward pressurising in sleeve pipe, it is easy to cause sleeve pipe generation quick-fried The accident such as fried；Owing to being not provided with cooling device, sleeve pipe works the most in high temperature environments, Can make insulator that the situations such as aging, be full of cracks occur, reduce the insulating properties of sleeve pipe；In long-term work During work, the dielectric in sleeve pipe is easily accessible granule foreign, the most also can reduce it exhausted Edge performance.

Utility model content

(1) solve the technical problem that

For the disadvantages mentioned above existing for prior art, this utility model provides a kind of Novel direct Stream sleeve pipe, it is possible to effectively overcome the safe design existing for prior art to be short of, lack cold But the defect such as cooling and defecator.

(2) technical scheme

For realizing object above, this utility model is achieved by the following technical programs:

A kind of Novel DC sleeve pipe, including binding post and upper insulator, sets inside described upper insulator Conducting rod and capacitor core, described conducting rod top is had to be connected with binding post, described upper insulator Bottom is provided with mounting flange, and described mounting flange fixes with flange sleeve, described flange sleeve Bottom connects lower insulator, is provided with base bottom described lower insulator, and described Novel DC sleeve pipe is also It is provided with oil level control unit and oil body cold filtration unit.

Preferably, described oil level control unit includes the oil level being located at described upper insulator top inner wall Sensor, the oil level pipe being located at described mounting flange side and the oil being connected with described oil level pipe Case.

Preferably, described fuel level sensor and fuel tank radio communication.

Preferably, described oil body cold filtration unit includes being located at the temperature bottom described upper insulator Sensor and moisture transducer, the oil inlet pipe being located at described mounting flange opposite side and flowline, The oil filter that is connected with described oil inlet pipe and flowline and being located on described oil inlet pipe and flowline Take fuel tap and water cooling tube.

Preferably, described temperature sensor, moisture transducer and oil filter radio communication.

(3) beneficial effect

Compared with prior art, a kind of Novel DC sleeve pipe provided by the utility model is by oil Position control unit is capable of in the case of expanding with heat and contract with cold carrying out transformer oil oil level in sleeve pipe Based Intelligent Control, on the one hand the transformer oil in sleeve pipe can be carried out cold by oil body cold filtration unit But lower the temperature, to reduce the operating temperature of sleeve pipe, on the other hand can be to the transformer oil in sleeve pipe Filter, filter the granule foreign in transformer oil, effectively promote the insulating properties of sleeve pipe, Can also avoid the perils such as blast simultaneously.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, The accompanying drawing used required in embodiment or description of the prior art will be briefly described below. It should be evident that the accompanying drawing in describing below is only embodiments more of the present utility model, right From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to Other accompanying drawing is obtained according to these accompanying drawings.

Fig. 1 is this utility model structural representation；

In figure:

1, binding post；2, upper insulator；3, conducting rod；4, capacitor core；5, oil level passes Sensor；6, temperature sensor；7, moisture transducer；8, mounting flange；9, oil level pipe； 10, fuel tank；11, oil inlet pipe；12, oil filter；13, flowline；14, fuel tap is taken；15、 Water cooling tube；16, flange sleeve；17, lower insulator；18, base.

Detailed description of the invention

For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below The accompanying drawing in this utility model embodiment will be combined, to the technical side in this utility model embodiment Case is clearly and completely described.Obviously, described embodiment is this utility model one Divide embodiment rather than whole embodiments.Based on the embodiment in this utility model, ability The every other enforcement that territory those of ordinary skill is obtained under not making creative work premise Example, broadly falls into the scope of this utility model protection.

A kind of Novel DC sleeve pipe, as it is shown in figure 1, include binding post 1 and upper insulator 2, on Internal conducting rod 3 and the capacitor core 4 of being provided with of insulator 2, conducting rod 3 top and binding post 1 Being connected, be provided with mounting flange 8 bottom upper insulator 2, mounting flange 8 is solid with flange sleeve 16 phase Fixed, connect bottom flange sleeve 16 and have lower insulator 17, bottom lower insulator 17, be provided with base 18, Novel DC sleeve pipe is additionally provided with oil level control unit and oil body cold filtration unit.Oil level controls single Unit includes being located at the fuel level sensor 5 of insulator 2 top inner wall, being located at mounting flange 8 side Oil level pipe 9 and the fuel tank 10 being connected with oil level pipe 9, fuel level sensor 5 is wireless with fuel tank 10 Communication；Oil body cold filtration unit includes being located at the temperature sensor 6 bottom insulator 2 and water Sub sensor 7, the oil inlet pipe 11 being located at mounting flange 8 opposite side and flowline 13 and oil-feed Oil filter 12 that pipe 11 is connected with flowline 13 and being located on oil inlet pipe 11 and flowline 13 Take fuel tap 14 and water cooling tube 15, temperature sensor 6, moisture transducer 7 and oil filter 12 Radio communication.

During work, the transformer oil oil level in upper insulator 2 can be supervised by fuel level sensor 5 Survey, and send the data to fuel tank 10 by radio communication, when raising or other due to temperature When situation causes oil level to rise, fuel tank 10 can be by transformer oil unnecessary in upper insulator 2 from oil level Extract out in pipe 9；On the contrary, when the oil level is lowered, fuel tank 10 can be by oil level pipe 9 upwards insulator Supplement the transformer oil lacked in 2, prevent causing because of oil starvation dielectric to make moist or generation office The situations such as portion's electric discharge.

Temperature sensor 6 and moisture transducer 7 work to the transformer oil in upper insulator 2 respectively Make temperature and the moisture contained is monitored, and send the data to oil filter by radio communication 12, temperature and moisture are comprehensively analyzed by oil filter 12, it may be judged whether will enter transformer oil Row cold filtration.When needs carry out cold filtration, transformer oil is entered into by oil inlet pipe 11 In oil filter 12, transformer oil is filtered by oil filter 12, and the transformer oil filtered can To turn again to, in upper insulator 2, take fuel tap 14 and can facilitate staff by flowline 13 The composition of the transformer oil before and after filtering is detected, judges the filter effect of oil filter 12； Transformer oil in oil inlet pipe 11 and flowline 13 can be cooled by water cooling tube 15.

A kind of Novel DC sleeve pipe provided by the utility model can be to the transformer oil in sleeve pipe Oil level carries out Based Intelligent Control, can also be to transformator while reducing transformer oil operating temperature Oil filters, and is prevented effectively from the danger such as set off an explosion because of sleeve pipe inner oil shortage, the factor such as make moist The generation of accident.

Above example only in order to the technical solution of the utility model to be described, is not intended to limit； Although this utility model being described in detail with reference to previous embodiment, this area common Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be entered by it Row amendment, or wherein portion of techniques feature is carried out equivalent；And these are revised or replace Change, the essence of appropriate technical solution can't be made to depart from this utility model each embodiment technical scheme Spirit and scope.

Claims (5)

1. a Novel DC sleeve pipe, it is characterised in that: include binding post (1) and upper porcelain Set (2), described upper insulator (2) is internal is provided with conducting rod (3) and capacitor core (4), Described conducting rod (3) top is connected with binding post (1), and described upper insulator (2) bottom sets Mounting flange (8), described mounting flange (8) is had to fix with flange sleeve (16), institute State the connection of flange sleeve (16) bottom and have lower insulator (17), described lower insulator (17) bottom Being provided with base (18), described Novel DC sleeve pipe is additionally provided with oil level control unit and oil body cooling Filter element.

Novel DC sleeve pipe the most according to claim 1, it is characterised in that: described oil level Control unit includes being located at the fuel level sensor (5) of described upper insulator (2) top inner wall, setting Oil level pipe (9) in described mounting flange (8) side and being connected with described oil level pipe (9) Fuel tank (10).

Novel DC sleeve pipe the most according to claim 2, it is characterised in that: described oil level Sensor (5) and fuel tank (10) radio communication.

Novel DC sleeve pipe the most according to claim 1, it is characterised in that: described oil body Cold filtration unit includes temperature sensor (6) and the water being located at described upper insulator (2) bottom Sub sensor (7), it is located at the oil inlet pipe (11) of described mounting flange (8) opposite side and goes out The oil filter (12) that oil pipe (13) is connected with described oil inlet pipe (11) and flowline (13) And be located on described oil inlet pipe (11) and flowline (13) take fuel tap (14) and water-cooled Pipe (15).

Novel DC sleeve pipe the most according to claim 4, it is characterised in that: described temperature Sensor (6), moisture transducer (7) and oil filter (12) radio communication.