CN105047376B - Adjustable variable-pressure device vacuum oil, detecting system - Google Patents

Adjustable variable-pressure device vacuum oil, detecting system Download PDF

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Publication number
CN105047376B
CN105047376B CN201510467468.6A CN201510467468A CN105047376B CN 105047376 B CN105047376 B CN 105047376B CN 201510467468 A CN201510467468 A CN 201510467468A CN 105047376 B CN105047376 B CN 105047376B
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China
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vacuum
valve
oil
pneumostome
pressure
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CN201510467468.6A
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Chinese (zh)
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CN105047376A (en
Inventor
胡东
郑强
张金良
张鹏
刘宁
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国网山东省电力公司青岛供电公司
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Priority to CN201310574281.7A priority Critical patent/CN103680829B/en
Priority to CN201510467468.6A priority patent/CN105047376B/en
Publication of CN105047376A publication Critical patent/CN105047376A/en
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Abstract

The present invention relates to a kind of adjustable variable-pressure device vacuum oil, detecting system, including bellow oil conservator and vacuum extractor;Chamber between oil conservater shell and bellows connects with exhaust outlet;The inner chamber of bellows connects with pneumostome;Exhaust outlet is connected by the first connecting tube with vacuum extractor sealing;Whether exhaust outlet vacuum-pumping valve is arranged in the first connecting tube, connected between vacuum extractor by the chamber between the open and close controlling oil conservater shell and bellows of exhaust outlet vacuum-pumping valve;Pneumostome is connected by the second connecting tube with vacuum extractor sealing;Whether pneumostome vacuum-pumping valve is arranged in the second connecting tube, connected between vacuum extractor by the inner chamber of the open and close controlling bellows of pneumostome vacuum-pumping valve;One end of pneumostome and/or the also external control valve of exhaust outlet, the other end and air communication of control valve, whether connected with air by the open and close controlling pneumostome and/or exhaust outlet of control valve.

Description

Adjustable variable-pressure device vacuum oil, detecting system

Technical field

The present invention relates to a kind of adjustable variable-pressure device vacuum oil, detecting system.It is specifically a kind of to be applied to carry The vacuum oil of the transformer of bellow oil conservator, detecting system.

Background technology

Oil conservater is commonly called as conservator, and traverse passes through butterfly valve and the oil of gas relay and transformer above oil tank of transformer Case communicates.When transformer oil expanded by heating, transformer oil flows to oil conservater by fuel tank;When transformer oil contract on cooling, become Depressor oil flows to fuel tank by oil conservater.Therefore, by installing oil conservater, can be produced with compensator transformer oil due to temperature change Volume expansion or shrinkage, while can by transformer oil and air exclusion, be transformer safety operation important protection group Part.Traditional capsule type oil storage cabinet and diaphragm type storage oil cabinet, easily broken because the mechanical strength of capsule or barrier film is low, during use Split and cause oil leak, and gradually substituted by bellow oil conservator.

Bellow oil conservator, built-in corrugated pipe.The ripple tube cavity is the air bag communicated with air, and its one end is freely to stretch The movable end of contracting, the other end are fixed by the end plate welded with bellow oil conservator.Transformer oil is stored in oil conservater shell and ripple Between line pipe outside, connected by butterfly valve and gas relay with the fuel tank of transformer.Bellows interior is air, what it was fixed One end is communicated by pneumostome with ambient atmosphere.Chamber between oil conservater shell and bellows passes through exhaust outlet and outside air Connection.Under normal circumstances, the exhaust close, the pneumostome are opened, when the transformer oil volume in oil tank of transformer because Temperature raise and when increasing, transformer oil dilatation by gas relay and butterfly valve enter oil conservater shell and bellows it Between chamber in so that pressure in chamber is more than the pressure of ripple inner air tube, and then bellows is compressed so that transformer The dilatation of oil is transferred in the chamber between oil conservater shell and bellows.When bellows is pressurized, its inner chamber it is unnecessary Air is discharged through pneumostome, whole oil conservater is in pressure balance.When the transformer oil volume in oil tank of transformer because When temperature is reduced and reduced, the pressure in chamber between oil conservater shell and bellows is less than the pressure of ripple tube cavity air Power, in the presence of air pressure, bellows extends, the part in the chamber that will be stored between oil conservater shell and bellows Transformer oil is sent back in fuel tank, fuel tank is full of transformer oil all the time.During bellows extends, outside air passes through Pneumostome enters ripple tube cavity supplement pressure, and after the transformer oil volume in fuel tank is compensated, bellows stops elongation, Whole oil conservater is in new pressure balance again.Therefore volumetric expansion or contraction are produced when transformer oil varies with temperature When, bellows can be promoted to compress or stretch, so as to change bellow oil conservator oil pocket size, realize the volume under the conditions of hermetically sealed Compensation.

In order to effectively expel the bubble in transformer, the dielectric level of transformer is improved, is especially getting together formula line , will vacuum impregnating to high-power transformer in order to prevent bubble from causing breakdown between adjacent turns accident in the case that circle turn-to-turn potential difference is larger Oil.

Publication No. CN103123850A, the hair of entitled " a kind of transformer partial vacuum oiling device and its technique " Bright patent application, a kind of partial vacuum oiling device for being primarily adapted for use in the transformer with bellow oil conservator and its technique are disclosed, Concrete scheme is, vacuum pump set, the exhaust outlet and oil storage tank of transformer bellow oil conservator is mutual by threeway tube control flap Connection, before oiling, the oiling valve between closing oil storage tank and threeway tube control flap, open vacuum pump set and controlled with three-way pipe Vacuum-pumping valve between valve, start vacuum pump set and transformer take out very by the exhaust outlet of transformer bellow oil conservator Do-nothing operation, when the vacuum in transformer reaches oiling condition, vacuum-pumping valve is closed, open oiling valve and transformer is entered Row vacuum oil.But this mode of operation, vacuum pumping is carried out to transformer by the exhaust outlet of bellow oil conservator so that storage Chamber between Oil Tank shell and bellows is vacuum, and ripple tube cavity is air, can be much larger than bellows chamber pressure The pressure of chamber between oil conservater shell and bellows, cause bellows external and internal pressure uneven, easily bellows is excessively drawn Stretching causes to deform.

The content of the invention

Therefore, the technical problems to be solved by the invention are that in the prior art, vacuum is easily caused in bellows External pressure is uneven, causes bellows excessive tensile to deform, so as to provide in a kind of vacuum, can make inside and outside bellows Pressure balanced adjustable variable-pressure device vacuum oil, detecting system.

In order to solve the above technical problems, technical scheme is as follows:

The invention provides a kind of adjustable variable-pressure device vacuum oil, detecting system, including bellow oil conservator and vacuumize Device;

Chamber between the oil conservater shell and bellows of the bellow oil conservator connects with exhaust outlet;The bellows Inner chamber connects with pneumostome;

The exhaust outlet is connected by the first connecting tube with vacuum extractor sealing;Exhaust outlet vacuum-pumping valve is set In in first connecting tube, pass through oil conservater shell described in the open and close controlling of the exhaust outlet vacuum-pumping valve and the ripple Whether the chamber between pipe connects between the vacuum extractor;

The pneumostome is connected by the second connecting tube with vacuum extractor sealing;Pneumostome vacuum-pumping valve is set In in second connecting tube, taken out by the inner chamber of bellows described in the open and close controlling of the pneumostome vacuum-pumping valve with described Whether connected between vacuum plant;

One end of the pneumostome and/or the also external control valve of the exhaust outlet, the other end of the control valve with Air communication, whether connected with air by pneumostome described in the open and close controlling of the control valve and/or the exhaust outlet.

Adjustable variable-pressure device vacuum oil of the present invention, detecting system, the control valve include the first regulating valve Door and/or the second control valve;

One end of first control valve connects with the pneumostome, the other end and air of first control valve Whether connection, connected by pneumostome described in the open and close controlling of first control valve with air;

One end of second control valve connects with the exhaust outlet, the other end and air of second control valve Whether connection, connected by exhaust outlet described in the open and close controlling of second control valve with air.

Adjustable variable-pressure device vacuum oil of the present invention, detecting system, the pneumostome, second connecting tube with And one end of first control valve seals connection and/or the exhaust outlet, first connecting tube by tee pipe coupling And one end of second control valve is sealed by tee pipe coupling and connected.

Adjustable variable-pressure device vacuum oil of the present invention, detecting system, in addition to:

Total valve, the sealing of its one end and the vacuum extractor connect, the other end respectively with the exhaust outlet vacuum pumping valve Door connects with the pneumostome vacuum pumping valve door sealing, passes through exhaust outlet vacuum-pumping valve described in the open and close controlling of the total valve Whether connected between the pneumostome vacuum-pumping valve and the vacuum extractor.

Adjustable variable-pressure device vacuum oil of the present invention, detecting system, in addition to:

Pressure vacuum meter, by four-way pipe fitting and the exhaust outlet vacuum-pumping valve, the pneumostome vacuum-pumping valve with And the main valve door sealing connection.

Adjustable variable-pressure device vacuum oil of the present invention, detecting system, first connecting tube select transparent steel wire Pipe.

Adjustable variable-pressure device vacuum oil of the present invention, detecting system, in addition to:

Aerating device, connected with the main valve door sealing.

Adjustable variable-pressure device vacuum oil of the present invention, detecting system, the total valve, the vacuum extractor with And the aerating device is sealed by tee pipe coupling and connected.

The above-mentioned technical proposal of the present invention has advantages below compared with prior art:

(1) the invention provides a kind of adjustable variable-pressure device vacuum oil, detecting system, including bellow oil conservator and take out true Empty device;Chamber between the oil conservater shell and bellows of the bellow oil conservator connects with exhaust outlet;The bellows Inner chamber connects with pneumostome;The exhaust outlet is connected by the first connecting tube with vacuum extractor sealing;Exhaust outlet is taken out very Empty valve is arranged in first connecting tube, passes through oil conservater shell described in the open and close controlling of the exhaust outlet vacuum-pumping valve Whether the chamber between the bellows connects between the vacuum extractor;The pneumostome by the second connecting tube with The vacuum extractor sealing connection;Pneumostome vacuum-pumping valve is arranged in second connecting tube, passes through the pneumostome Whether the inner chamber of bellows connects between the vacuum extractor described in the open and close controlling of vacuum-pumping valve;The pneumostome And/or one end of the also external control valve of the exhaust outlet, the other end and air communication of the control valve, pass through the tune Save whether pneumostome and/or the exhaust outlet described in the open and close controlling of valve connect with air.

When vacuumizing, the control valve is closed, the exhaust outlet vacuum-pumping valve is opened and the pneumostome vacuumizes Valve, vacuum pumping is carried out to bellow oil conservator, because the bellow oil conservator passes through gas relay and butterfly valve and transformation Device connects, and then can complete the vacuum pumping to whole transformer.Because it is that exhaust outlet and pneumostome are taken out simultaneously Vacuumizing, therefore, chamber and ripple tube cavity between oil conservater shell and bellows are in vacuum state so that ripple Line pipe internal and external pressure balance, avoids to bellows excessive tensile, causes irrecoverability to damage.It is evacuated to after setting also It need to keep 2 hours.After the vacuum of transformer meets the requirements, you can inject transformer oil to transformer by pouring orifice.

As an alternative embodiment, the control valve includes the first control valve and/or the second control valve; One end of first control valve connects with the pneumostome, the other end and air communication of first control valve, leads to Whether pneumostome described in crossing the open and close controlling of first control valve connects with air;One end of second control valve with The exhaust outlet connection, the other end and air communication of second control valve, passes through the opening and closing of second control valve Control whether the exhaust outlet connects with air.

After transformer vacuum oil, in the case of the first control valve is only included, if the oil mass in transformer is less than Setting value, then exhaust outlet vacuum-pumping valve is closed, open pneumostome vacuum-pumping valve and simultaneously close off the first control valve, continue pair Ripple tube cavity carries out vacuum pumping so that bellows external pressure is more than its chamber pressure, and bellows is compressed, so as to increase Greatly to the injection flow of transformer;If the oil mass in transformer is higher than setting value, exhaust outlet vacuum-pumping valve is opened, closes breathing Mouth vacuum-pumping valve, while the first control valve of appropriate regulation is put into partial air to reduce the vacuum of ripple tube cavity, makes The pressure of ripple tube cavity is obtained more than the pressure outside bellows, bellows is stretched, so as to reduce the injection flow to transformer. In the case of the second control valve is only included, if the oil mass in transformer is less than setting value, exhaust outlet vacuum pumping valve is closed Door, pneumostome vacuum-pumping valve is opened, while the second control valve of appropriate regulation is put into partial air to reduce oil conservater shell The vacuum in chamber between bellows so that bellows external pressure is more than its chamber pressure, and bellows is compressed, from And increase the injection flow to transformer;If the oil mass in transformer is higher than setting value, pneumostome vacuum-pumping valve is closed, is opened Exhaust outlet vacuum-pumping valve simultaneously closes off the second control valve, continues to take out very the chamber between oil conservater shell and bellows It is empty so that the pressure of ripple tube cavity is more than the pressure outside bellows, and bellows is stretched, so as to reduce the note to transformer Oil mass.In the case of the first control valve is not only included but also including the second control valve, if the oil mass in transformer is less than setting Value, then exhaust outlet vacuum-pumping valve is closed, is now remained off always after the first control valve vacuum oil, regulation second Control valve is put into partial air to reduce the vacuum in the chamber between oil conservater shell and bellows so that outside bellows Portion's pressure is more than its chamber pressure, and bellows is compressed, so as to increase the injection flow to transformer;If the oil mass in transformer is high In setting value, then pneumostome vacuum-pumping valve is closed, is now remained off always after the second control valve vacuum oil, adjusted Save the first control valve and be put into partial air to reduce the vacuum of ripple tube cavity so that the pressure of ripple tube cavity is more than ripple Pressure outside line pipe, bellows are stretched, so as to reduce the injection flow to transformer.Therefore, it is of the present invention adjustable Transformer vacuum oil, detecting system, the injection flow of transformer by adjusting control valve, can be made close to setting value.Transformation After device injection flow regulates, control valve is opened, bellows interior is recovered normal pressure, vacuum oil operation all terminates.

(2) adjustable variable-pressure device vacuum oil of the present invention, detecting system, the pneumostome, second connection One end of pipe and first control valve seals connection and/or the exhaust outlet, first company by tee pipe coupling One end of adapter and second control valve is sealed by tee pipe coupling and connected.Because tee pipe coupling has three connections Connector, between the one end that can very easily realize the pneumostome, second connecting tube and the control valve Sealing connection and/or one end of the exhaust outlet, first connecting tube and second control valve pass through three-way pipe Joint sealing connects.

(3) adjustable variable-pressure device vacuum oil of the present invention, detecting system, in addition to:Total valve, its one end and institute Vacuum extractor sealing connection is stated, the other end is close with the exhaust outlet vacuum-pumping valve and the pneumostome vacuum-pumping valve respectively Envelope connection, passes through exhaust outlet vacuum-pumping valve described in the open and close controlling of the total valve and the pneumostome vacuum-pumping valve and institute State and whether connect between vacuum extractor.By setting total valve, can prevent from becoming with exhaust outlet vacuum-pumping valve collective effect Depressor oil enters vacuum extractor from the first connecting tube, causes the damage of vacuum extractor, realizes dual fail-safe control.

(4) adjustable variable-pressure device vacuum oil of the present invention, detecting system, in addition to:Pressure vacuum meter, pass through four Way pipe fitting connects with the exhaust outlet vacuum-pumping valve, the pneumostome vacuum-pumping valve and the main valve door sealing.Because Four-way pipe fitting has the connector of four interconnections, therefore can realize the pressure vacuum meter, the exhaust outlet vacuum pumping valve Sealing connection between door, the pneumostome vacuum-pumping valve and the total valve, operating personnel are by reading pressure vacuum Table, you can the vacuum of transformer is obtained, and then to whether continuing to make accurate judgement to transformer progress vacuum pumping.Separately Outside, the pressure vacuum meter, the exhaust outlet vacuum-pumping valve, the pneumostome vacuum-pumping valve and the total valve pass through Four-way pipe fitting sealing connection, has been combined into a valve member, in actual application, has been easy to promote and circulates.

(5) adjustable variable-pressure device vacuum oil of the present invention, detecting system, first connecting tube select transparent steel Fiber tube.The transparent steel wire tube is the PVC hose of embedded steel-wire carcass, nontoxic, transparent, intensity is high, and corrosion-resistant, fluid conveying can See, therefore, in vacuum oil operation, operating personnel can easily observe whether transformer oil enters the first connection Pipe, if it was observed that transformer oil enters the first connecting tube, meeting closes rapidly exhaust outlet vacuum-pumping valve and total valve, avoids transformation Device oil causes to damage into vacuum extractor to it.

(6) adjustable variable-pressure device vacuum oil of the present invention, detecting system, in addition to:Aerating device, it is and described total Valve seal connects.As an alternative embodiment, the total valve, the vacuum extractor and the aerating device Sealed and connected by tee pipe coupling.

After vacuum oil injection operation terminates, exhaust outlet vacuum-pumping valve, control valve and vacuum extractor are closed, is opened Pneumostome vacuum-pumping valve and total valve, because aerating device is connected by tee pipe coupling with main valve door sealing, therefore, pass through Total valve and pneumostome vacuum-pumping valve can pressurize to ripple tube cavity, make bellows external and internal pressure uneven, stretch out, And then transformer is pressurizeed, it is easy to carry out pressure-bearing leak test detection to transformer.Therefore, vacuumized the invention provides one kind collection, Injection flow is adjusted and pressure-bearing leak test is detected on integral adjustable variable-pressure device vacuum oil, detecting system, reduces dismounting work Measure, improve operating efficiency.

Brief description of the drawings

In order that present disclosure is more likely to be clearly understood, specific embodiment and combination below according to the present invention Accompanying drawing, the present invention is further detailed explanation, wherein

Fig. 1 is only the adjustable variable-pressure device vacuum oil of the first control valve, the structure of detecting system of the present invention Schematic diagram;

Fig. 2 is only the adjustable variable-pressure device vacuum oil of the second control valve, the structure of detecting system of the present invention Schematic diagram;

Fig. 3 is the adjustable variable-pressure device vacuum impregnating that existing first control valve of the present invention has the second control valve again Oil, the structural representation of detecting system.

Reference is expressed as in figure:1- bellow oil conservators, 2- vacuum extractors, 3- exhaust outlet vacuum-pumping valves, 4- are exhaled Suction inlet vacuum-pumping valve, the control valves of 5a- first, the control valves of 5b- second, 6- total valves, 7- pressure vacuum meters, 8- inflation dresses Put, 11- oil conservater shells, 12- bellowss, 13- exhaust outlets, 14- pneumostomes, 15- pouring orifices, 16- butterfly valves, 17- gas relays Device, the connecting tubes of 3a- first, the connecting tubes of 4a- second.

Embodiment

Embodiment 1

The present embodiment is supplied to a kind of adjustable variable-pressure device vacuum oil, detecting system, as shown in Figure 1, Figure 2, Figure 3 shows, Including bellow oil conservator 1 and vacuum extractor 2.

Chamber between the oil conservater shell 11 of the bellow oil conservator 1 and bellows 12 connects with exhaust outlet 13;It is described The inner chamber of bellows 12 connects with pneumostome 14.

The exhaust outlet 13 is connected by the first connecting tube 3a with the vacuum extractor 2 sealing;Exhaust outlet vacuum pumping valve Door 3 is arranged on the first connecting tube 3a, passes through oil conservater shell described in the open and close controlling of the exhaust outlet vacuum-pumping valve 3 Whether the chamber between 11 and the bellows 12 connects between the vacuum extractor 2.

The pneumostome 14 is connected by the second connecting tube 4a with the vacuum extractor 2 sealing;Pneumostome vacuum pumping valve Door 4 is arranged on the second connecting tube 4a, passes through bellows 12 described in the open and close controlling of the pneumostome vacuum-pumping valve 4 Whether inner chamber connects between the vacuum extractor 2.

One end of the also external control valve of pneumostome 14 and/or the exhaust outlet 13, the control valve it is another End and air communication, it is with air by pneumostome 14 described in the open and close controlling of the control valve and/or the exhaust outlet 13 No connection.

The vacuum extractor 2 can select vavuum pump.When vacuumizing, the control valve is closed, opens the exhaust Mouth vacuum-pumping valve 3 and the pneumostome vacuum-pumping valve 4, vacuum pumping is carried out to bellow oil conservator 1, because the ripple Oil conservater 1 is connected by gas relay 17 and butterfly valve 16 with transformer, and then can complete to vacuumize whole transformer Operation.Because being to carry out vacuum pumping to exhaust outlet 13 and pneumostome 14 simultaneously, therefore, oil conservater shell 11 and bellows 12 Between chamber and the inner chamber of bellows 12 be in vacuum state so that the internal and external pressure balance of bellows 12, avoid due to Irrecoverability damages to caused by the excessive tensile of bellows 12.Being evacuated to after setting also needs to keep 2 hours (different voltages The transformer retention time of grade requires different, and the general pumpdown time is to vacuumize 1/3rd of the rear retention time to arrive Between half), if after standing, vacuum meets the requirement of oiling, then with the speed of the ton hour of 3 ton hour -5 by transformation Device oil injection transformer, until the pasta of gas relay is visible, and continue to vacuumize holding more than 4 hours, it is ensured that transformer Bubble in winding separates out well and vacuum keeps good, illustrates that oil tank of transformer is good with the sealing of bellow oil conservator 1 It is good, oiling can be continued toward bellow oil conservator 1.The side of bellow oil conservator 1 is provided with oil level indicator, can be obtained and become by oil level indicator The injection flow of depressor.If the injection flow of transformer reaches preset value, stop oiling.

As an alternative embodiment, adjustable variable-pressure device vacuum oil, detecting system described in the present embodiment, institute Stating control valve includes the first control valve 5a and/or the second control valve 5b.

One end of the first control valve 5a connects with the pneumostome 14, the other end of the first control valve 5a With air communication, whether connected with air by pneumostome 14 described in the open and close controlling of the first control valve 5a.

One end of the second control valve 5b connects with the exhaust outlet 13, the other end of the second control valve 5b With air communication, whether connected with air by exhaust outlet 13 described in the open and close controlling of the second control valve 5b.

After transformer vacuum oil, as shown in figure 1, in the case of the first control valve 5a is only included, if transformer In oil mass be less than setting value, then close exhaust outlet vacuum-pumping valve 3, open pneumostome vacuum-pumping valve 4 while the first regulation Valve 5a is remained off, and continues to carry out vacuum pumping to the inner chamber of bellows 12, in the promotion of the transformer oil newly injected Under, bellows 12 is compressed, and when the external and internal pressure of bellows 12 is in poised state again, oiling stops, so as to increase To the injection flow of transformer;If the oil mass in transformer is higher than setting value, exhaust outlet vacuum-pumping valve 3 is opened, closes breathing Mouth vacuum-pumping valve 4, while the first control valve 5a of appropriate regulation, are put into partial air to reduce the vacuum of the inner chamber of bellows 12 Degree so that the pressure of the inner chamber of bellows 12 is more than the pressure outside bellows 12, and bellows 12 is stretched, so as to reduce to transformation The injection flow of device.

As shown in Fig. 2 in the case of the second control valve 5b is only included, if the oil mass in transformer is less than setting value, Exhaust outlet vacuum-pumping valve 3 is then closed, pneumostome vacuum-pumping valve 4, while the second control valve 5b of appropriate regulation is opened, is put into Partial air is to reduce the vacuum in the chamber between oil conservater shell 11 and bellows 12 so that the external pressure of bellows 12 More than its chamber pressure, bellows 12 is compressed, so as to increase the injection flow to transformer;Set if the oil mass in transformer is higher than Definite value, then pneumostome vacuum-pumping valve 4 is closed, open exhaust outlet vacuum-pumping valve 3 and simultaneously close off the second control valve 5b, continue Chamber between oil conservater shell 11 and bellows 12 is vacuumized so that the pressure of the inner chamber of bellows 12 is more than outside bellows 12 The pressure in portion, bellows 12 are stretched, so as to reduce the injection flow to transformer.

As shown in figure 3, in the case of the first control valve 5a is not only included but also including the second control valve 5b, if transformer In oil mass be less than setting value, then close exhaust outlet vacuum-pumping valve 3, open pneumostome vacuum-pumping valve 4, continue to bellows 12 inner chamber vacuumizes, and is now remained off always after the first control valve 5a vacuum oils, adjusts the second control valve 5b is put into partial air to reduce the vacuum in the chamber between oil conservater shell 11 and bellows 12 so that outside bellows 12 Portion's pressure is more than its chamber pressure, and bellows 12 is compressed, so as to increase the injection flow to transformer;If the oil mass in transformer Higher than setting value, then pneumostome vacuum-pumping valve 4 is closed, open exhaust outlet vacuum-pumping valve 3, now the second control valve 5b is true Remained off always after empty oiling, continue to vacuumize the chamber between oil conservater shell 11 and bellows 12, regulation the One control valve 5a is put into partial air to reduce the vacuum of the inner chamber of bellows 12 so that the pressure of the inner chamber of bellows 12 is more than Pressure outside bellows 12, bellows 12 are stretched, so as to reduce the injection flow to transformer.

Above-mentioned three kinds of regulative modes, can by adjusting the external and internal pressure of bellows 12, control bellows 12 stretch or Person shrinks, to realize the regulation to transformer pouring oil mass.Wherein, most preferred scheme is to only include the first control valve 5a feelings Condition, because the first control valve 5a only connects with the inner chamber of bellows 12 with outside air, and the inner chamber of bellows 12 is stored up with ripple Transformer oil in Oil Tank is not in contact, it can be ensured that when air enter bellows 12 inner chamber when, not with transformer oil It is in contact, avoids pollution of the air to transformer oil.

Adjustable variable-pressure device vacuum oil described in the present embodiment, detecting system, can be by adjusting control valve, to becoming The injection flow of depressor is finely adjusted, and makes the injection flow of transformer more close to setting value.After transformer pouring oil mass regulates, open Control valve, makes the inside of bellows 12 recover normal pressure, and vacuum oil operation all terminates.

As an alternative embodiment, as shown in Figure 1, Figure 2, Figure 3 shows, the adjustable variable-pressure device described in the present embodiment is true Empty oiling, detecting system, one end of the pneumostome 14, the second connecting tube 4a and the first control valve 5a pass through Tee pipe coupling sealing connection and/or the exhaust outlet 13, the first connecting tube 3a and the second control valve 5b One end is sealed by tee pipe coupling and connected.

Because tee pipe coupling has the connector of three connections, the pneumostome, described second can be very easily realized Between one end of connecting tube and the control valve sealing connection and/or the exhaust outlet, first connecting tube and One end of second control valve is sealed by tee pipe coupling and connected.

Embodiment 2

On the basis of embodiment 1, the adjustable variable-pressure device vacuum oil described in the present embodiment, detecting system, as Fig. 1, Shown in Fig. 2, Fig. 3, in addition to:

Total valve 6, its one end connect with the vacuum extractor 2 sealing, and the other end vacuumizes with the exhaust outlet respectively Valve 3 connects with the pneumostome vacuum-pumping valve 4 sealing, is taken out very by exhaust outlet described in the open and close controlling of the total valve 6 Whether connected between empty valve 3 and the pneumostome vacuum-pumping valve 4 and the vacuum extractor 2.

, can be with the collective effect of exhaust outlet vacuum-pumping valve 3, when preventing vacuum oil, transformer by setting total valve 6 Oil enters vacuum extractor 2 from the first connecting tube 3a, causes the damage of vacuum extractor 2, realizes dual fail-safe control.

As a preferred embodiment, adjustable variable-pressure device vacuum oil, detecting system described in the present embodiment, also Including:

Pressure vacuum meter 7, pass through four-way pipe fitting and the exhaust outlet vacuum-pumping valve 3, the pneumostome vacuum-pumping valve 4 And the sealing of total valve 6 connection.

Because four-way pipe fitting has the connector of four interconnections, therefore can realize the pressure vacuum meter 7, the row Sealing connection between gas port vacuum-pumping valve 3, the pneumostome vacuum-pumping valve 4 and the total valve 6, operating personnel are led to Cross reading pressure vacuum meter, you can the vacuum of transformer is obtained, and then to whether continuing to carry out vacuum pumping to transformer Make accurate judgement.In addition, the pressure vacuum meter 7, the exhaust outlet vacuum-pumping valve 3, the pneumostome vacuum-pumping valve 4 And the total valve 6 is sealed by four-way pipe fitting and connected, and has been combined into a valve member, in actual application, just In popularization and circulation.

As a preferred embodiment, adjustable variable-pressure device vacuum oil, detecting system described in the present embodiment, institute State the first connecting tube 3a and select transparent steel wire tube.

The transparent steel wire tube is the PVC hose of embedded steel-wire carcass, nontoxic, transparent, intensity is high, and corrosion-resistant, fluid is defeated Send it is visible, therefore, vacuum oil operation in, operating personnel can easily observe transformer oil whether enter first connect Adapter 3a, if it was observed that transformer oil enters the first connecting tube 3a, exhaust outlet vacuum-pumping valve 3 and total valve 6 are closed rapidly in meeting, Transformer oil is avoided to cause to damage to it into vacuum extractor 2.

Embodiment 3

On the basis of embodiment 1 or embodiment 2, adjustable variable-pressure device vacuum oil, detection system described in the present embodiment System, as shown in Figure 1, Figure 2, Figure 3 shows, in addition to:

Aerating device 8, connected with the total valve 6 sealing.

The aerating device 8 can select inflator pump.

As an alternative embodiment, adjustable variable-pressure device vacuum oil, detecting system described in the present embodiment, institute State total valve 6, the vacuum extractor 2 and the aerating device 8 and connection is sealed by tee pipe coupling.

After vacuum oil injection operation terminates, exhaust outlet vacuum-pumping valve 3, control valve and vacuum extractor 2 are closed, is beaten Pneumostome vacuum-pumping valve 4 and total valve 6 are opened, because aerating device 8 is connected by tee pipe coupling with the sealing of total valve 6, because This, opens aerating device 8, can be with air pressure capable of being increased to the inner chamber of bellows 12 by total valve 6 and pneumostome vacuum-pumping valve 4, makes ripple The external and internal pressure of line pipe 12 is uneven, stretches out, and then transformer is pressurizeed.After general aerating is depressed into 0.035pa, main valve is closed Door 6, stop inflation.Kept for 12 hours, if ne-leakage and exception, illustrate that pressure-bearing leak test is qualified.Therefore, one is present embodiments provided Kind collection vacuumizes, injection flow regulation and pressure-bearing leak test are detected on integral adjustable variable-pressure device vacuum oil, detecting system, subtracts Lack dismantlement work amount, improve operating efficiency.

Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or Among changing still in the protection domain of the invention.

Claims (7)

1. a kind of adjustable variable-pressure device vacuum oil, detecting system, it is characterised in that including bellow oil conservator (1) and vacuumize Device (2);
Chamber between the oil conservater shell (11) of the bellow oil conservator (1) and bellows (12) connects with exhaust outlet (13); The inner chamber of the bellows (12) connects with pneumostome (14);
The exhaust outlet (13) is connected by the first connecting tube (3a) with the vacuum extractor (2) sealing;Exhaust outlet vacuumizes Valve (3) is arranged on first connecting tube (3a), passes through storage described in the open and close controlling of the exhaust outlet vacuum-pumping valve (3) Whether the chamber between Oil Tank shell (11) and the bellows (12) connects between the vacuum extractor (2);
The pneumostome (14) is connected by the second connecting tube (4a) with the vacuum extractor (2) sealing;Pneumostome vacuumizes Valve (4) is arranged on second connecting tube (4a), passes through ripple described in the open and close controlling of the pneumostome vacuum-pumping valve (4) Whether the inner chamber of line pipe (12) connects between the vacuum extractor (2);
In the exhaust outlet (13) and the pneumostome (14), only described pneumostome (14) is circumscribed with control valve (5a), institute The one end for stating control valve (5a) connects with the pneumostome (14), the other end and air communication of the control valve (5a), Whether connected with air by pneumostome (14) described in the control valve (5a) open and close controlling.
2. adjustable variable-pressure device vacuum oil according to claim 1, detecting system, it is characterised in that:
One end of the pneumostome (14), second connecting tube (4a) and the control valve (5a) passes through tee pipe coupling Sealing connection.
3. adjustable variable-pressure device vacuum oil according to claim 1, detecting system, it is characterised in that also include:
Total valve (6), its one end connect with the vacuum extractor (2) sealing, and the other end vacuumizes with the exhaust outlet respectively Valve (3) connects with the pneumostome vacuum-pumping valve (4) sealing, passes through exhaust described in the open and close controlling of the total valve (6) Whether connected between mouth vacuum-pumping valve (3) and the pneumostome vacuum-pumping valve (4) and the vacuum extractor (2).
4. adjustable variable-pressure device vacuum oil according to claim 3, detecting system, it is characterised in that also include:
Pressure vacuum meter (7), pass through four-way pipe fitting and the exhaust outlet vacuum-pumping valve (3), the pneumostome vacuum-pumping valve (4) and the total valve (6) sealing connects.
5. adjustable variable-pressure device vacuum oil according to claim 1, detecting system, it is characterised in that:
First connecting tube (3a) selects transparent steel wire tube.
6. the adjustable variable-pressure device vacuum oil according to claim 3 or 4, detecting system, it is characterised in that also include:
Aerating device (8), connected with the total valve (6) sealing.
7. adjustable variable-pressure device vacuum oil according to claim 6, detecting system, it is characterised in that:
The total valve (6), the vacuum extractor (2) and the aerating device (8) are sealed by tee pipe coupling and connected.
CN201510467468.6A 2013-11-15 2013-11-15 Adjustable variable-pressure device vacuum oil, detecting system CN105047376B (en)

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CN201510467468.6A CN105047376B (en) 2013-11-15 2013-11-15 Adjustable variable-pressure device vacuum oil, detecting system

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CN201510467468.6A CN105047376B (en) 2013-11-15 2013-11-15 Adjustable variable-pressure device vacuum oil, detecting system
CN201510467486.4A CN105097203B (en) 2013-11-15 2013-11-15 A kind of transformer vacuum oil of bidirectional modulation, detecting system
CN201510467469.0A CN105097202B (en) 2013-11-15 2013-11-15 A kind of transformer vacuum oil vacuumized using vavuum pump, detecting system

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103996497B (en) * 2014-05-28 2016-06-22 平顶山电力设计院有限公司 A kind of it be easy to draining and regulate the oil tank of transformer of liquid level in real time
CN104779036B (en) * 2015-04-18 2018-03-27 孙艺夫 Suitable for the outer oily vertical metal bellow oil conservator of transport and its transportation resources
CN106935366A (en) * 2015-12-29 2017-07-07 保定保菱变压器有限公司 A kind of tubular type oil meter oil conservater with barrier film oil conservater
CN106500924B (en) * 2016-10-10 2019-07-12 广西电网有限责任公司电力科学研究院 A kind of leak hunting method of metal corrugated oil conservater
CN106768694A (en) * 2016-11-29 2017-05-31 天威保变(秦皇岛)变压器有限公司 A kind of new transformer entirety leak testing process
CN107731478B (en) * 2017-11-14 2019-05-28 天津市特变电工变压器有限公司 A kind of American Unit Substation vacuum oil, oil strain and the three-in-one tooling of leakage test
CN108181053B (en) * 2017-12-18 2019-08-27 重庆厚全科技发展有限公司 A kind of motorcycle tank air-leakage test sealing device
CN109994304A (en) * 2019-03-06 2019-07-09 泉州台商投资区恒鑫隆网络科技有限公司 It is a kind of based on the anti-overflow filling oil-immersed power transformer of negative pressure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201780847U (en) * 2010-08-31 2011-03-30 王建伟 Corrugated oil storage cabinet
CN202042318U (en) * 2010-10-29 2011-11-16 山东鲁能泰山电力设备有限公司 Vacuum oil-injection device for transformer
CN202501897U (en) * 2012-03-28 2012-10-24 沈阳海为电力设备有限公司 Articulated display device for metal corrugated oil conservator
CN102832016A (en) * 2012-08-22 2012-12-19 李肃 Metal corrugated pipe type oil storage cabinet
JP2013058527A (en) * 2011-09-07 2013-03-28 Meiden T&D Co Ltd Transformer
CN203134507U (en) * 2013-03-12 2013-08-14 国家电网公司 Oil conservator and exhaust device thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201174296Y (en) * 2008-04-07 2008-12-31 保定天威集团有限公司 Vacuum oil injection type capsule oil storage cabinet
CN201278291Y (en) * 2008-08-29 2009-07-22 沈阳天通电气有限公司 Full sealed metal bellow type oil storage cabinet capable of being vacuumized
JP2010141019A (en) * 2008-12-10 2010-06-24 Toshiba Corp Oil-immersed transformer with diaphragm type conservator
CN202196645U (en) * 2011-09-13 2012-04-18 长沙泰时电气设备有限公司 External oil storage cabinet provided with pressure relief valve
CN203444919U (en) * 2013-11-15 2014-02-19 国网山东省电力公司青岛供电公司 Vacuum oiling and detecting system for transformer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201780847U (en) * 2010-08-31 2011-03-30 王建伟 Corrugated oil storage cabinet
CN202042318U (en) * 2010-10-29 2011-11-16 山东鲁能泰山电力设备有限公司 Vacuum oil-injection device for transformer
JP2013058527A (en) * 2011-09-07 2013-03-28 Meiden T&D Co Ltd Transformer
CN202501897U (en) * 2012-03-28 2012-10-24 沈阳海为电力设备有限公司 Articulated display device for metal corrugated oil conservator
CN102832016A (en) * 2012-08-22 2012-12-19 李肃 Metal corrugated pipe type oil storage cabinet
CN203134507U (en) * 2013-03-12 2013-08-14 国家电网公司 Oil conservator and exhaust device thereof

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CN105097203A (en) 2015-11-25
CN103680829A (en) 2014-03-26
CN105097202B (en) 2017-12-15
CN105097202A (en) 2015-11-25
CN105097203B (en) 2017-12-15
CN103680829B (en) 2015-12-16

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