CN105047376A - Vacuum oil filling and detecting system for adjustable transformer - Google Patents
Vacuum oil filling and detecting system for adjustable transformer Download PDFInfo
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- CN105047376A CN105047376A CN201510467468.6A CN201510467468A CN105047376A CN 105047376 A CN105047376 A CN 105047376A CN 201510467468 A CN201510467468 A CN 201510467468A CN 105047376 A CN105047376 A CN 105047376A
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Abstract
The invention relates to a vacuum oil filling and detecting system for an adjustable transformer. The vacuum oil filling and detecting system comprises a corrugated oil conservator and a vacuum supply device, wherein a chamber between an oil conservator housing and a corrugated pipe is communicated with an air outlet; an inner cavity of the corrugated pipe is communicated with a breathing opening; the air outlet is tightly communicated with the vacuum supply device through a first connecting pipe; an air outlet vacuum supply valve is arranged on the first connecting pipe; whether the chamber between the oil conservator housing and the corrugated pipe is communicated with the vacuum supply device or not is controlled through opening and closing of the air outlet vacuum supply valve; the breathing opening is tightly communicated with the vacuum supply device through a second connecting pipe; a breathing opening vacuum supply valve is arranged on the second connecting pipe; whether the inner cavity of the corrugated pipe is communicated with the vacuum supply device or not is controlled through opening and closing of the breathing opening vacuum supply valve; the breathing opening and/or the air outlet is also externally connected with one end of a regulating valve; the other end of the regulating valve is communicated with air; and whether the breathing opening and/or the air outlet are/is communicated with air or not is controlled through opening and closing of the regulating valve.
Description
Technical field
The present invention relates to a kind of adjustable variable-pressure device vacuum oil, detection system.Specifically a kind of vacuum oil, detection system being applicable to transformer with bellow oil conservator.
Background technology
Oil conservator is commonly called as conservator, and traverse, above oil tank of transformer, is communicated with the fuel tank of transformer by butterfly valve and Buchholz relay.When transformer oil expanded by heating, transformer oil flows to oil conservator by fuel tank; When cold events met by transformer oil, transformer oil flows to fuel tank by oil conservator.Therefore, by installing oil conservator, can the expansion of volume that produces due to variations in temperature of compensator transformer oil or contraction, can, by transformer oil and air exclusion, be the important protection assembly that transformer safety is run simultaneously.Traditional capsule type oil storage cabinet and diaphragm type storage oil cabinet, because the mechanical strength of capsule or barrier film is low, easily break during use and cause leakage of oil, and gradually replace by bellow oil conservator.
Bellow oil conservator, built-in corrugated pipe.Described bellows inner chamber is the air bag communicated with air, and its one end is the movable end of free-extension, and the other end is fixed by the end plate of welding with bellow oil conservator.Transformer oil is stored between oil conservator shell and bellows outside, is communicated with Buchholz relay by butterfly valve with the fuel tank of transformer.Bellows interior is air, and its fixing one end is communicated with ambient atmosphere by pneumostome.Oil conservator shell is communicated with outside air by exhaust outlet with the chamber between bellows.Under normal circumstances, described exhaust close, described pneumostome is opened, when the transformer oil volume Yin Wendu in oil tank of transformer raises and increases, transformer oil dilatation enters in the chamber between oil conservator shell and bellows by Buchholz relay and butterfly valve, the pressure in chamber is made to be greater than the pressure of ripple inner air tube, and then by bellows compression, in the chamber that the dilatation of transformer oil is transferred between oil conservator shell and bellows.When bellows pressurized, the additional air of its inner chamber is discharged through pneumostome, makes whole oil conservator be in pressure balance.When the transformer oil volume Yin Wendu in oil tank of transformer reduces and reduces, pressure in chamber between oil conservator shell and bellows is less than the pressure of bellows inner chamber air, under the effect of air pressure, bellows extends, some transformers oil in the chamber be stored between oil conservator shell and bellows is sent back in fuel tank, makes fuel tank be full of transformer oil all the time.In the process that bellows extends, outside air enters bellows inner chamber supplementary pressure through pneumostome, and after the transformer oil volume in fuel tank is compensated, bellows stops extending, and whole oil conservator is in again new pressure balance.Therefore when transformer oil varies with temperature generation volumetric expansion or shrinks, bellows compression or stretching can be impelled, thus change bellow oil conservator oil pocket size, realize the volume compensation under hermetically sealed condition.
In order to the bubble in transformer effectively can be expelled, improving the insulation level of transformer, especially when getting together that between formula coil turn, potential difference is larger, in order to prevent bubble from causing breakdown between adjacent turns accident, all vacuum oil being wanted to high-power transformer.
Publication number is CN103123850A, denomination of invention is the application for a patent for invention of " a kind of transformer partial vacuum oiling device and technique thereof ", disclose a kind of the partial vacuum oiling device and the technique thereof that are mainly applicable to the transformer being with bellow oil conservator, concrete scheme is, by vacuum pump set, the exhaust outlet of transformer bellow oil conservator and oil storage tank are interconnected by three-way pipe by-pass valve control, before oiling, close the oiling valve between oil storage tank and three-way pipe by-pass valve control, open the vacuum-pumping valve between vacuum pump set and three-way pipe by-pass valve control, start vacuum pump set, by the exhaust outlet of transformer bellow oil conservator, vacuum pumping is carried out to transformer, when vacuum degree in transformer reaches oiling condition, close vacuum-pumping valve, open oiling valve and vacuum oil is carried out to transformer.But this mode of operation, by the exhaust outlet of bellow oil conservator, vacuum pumping is carried out to transformer, the chamber between oil conservator shell and bellows is made to be vacuum, and bellows inner chamber is air, bellows chamber pressure can be made much larger than the pressure of the chamber between oil conservator shell and bellows, cause bellows external and internal pressure uneven, easily make bellows excessive tensile cause distortion.
Summary of the invention
For this reason, technical problem to be solved by this invention is in prior art, vacuum easily causes bellows external and internal pressure uneven, bellows excessive tensile is caused to be out of shape, thus provide in a kind of vacuum, adjustable variable-pressure device vacuum oil, the detection system of bellows internal and external pressure balance can be made.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
The invention provides a kind of adjustable variable-pressure device vacuum oil, detection system, comprise bellow oil conservator and vacuum extractor;
The oil conservator shell of described bellow oil conservator is communicated with exhaust outlet with the chamber between bellows; The inner chamber of described bellows is communicated with pneumostome;
Described exhaust outlet is sealed with described vacuum extractor by the first tube connector and is communicated with; Whether exhaust outlet vacuum-pumping valve is arranged on described first tube connector, be communicated with between described vacuum extractor by the chamber described in the open and close controlling of described exhaust outlet vacuum-pumping valve between oil conservator shell with described bellows;
Described pneumostome is sealed with described vacuum extractor by the second tube connector and is communicated with; Whether pneumostome vacuum-pumping valve is arranged on described second tube connector, be communicated with between described vacuum extractor by the inner chamber of bellows described in the open and close controlling of described pneumostome vacuum-pumping valve;
One end of described pneumostome and/or described exhaust outlet also external control valve, whether the other end of described control valve and air communication, be communicated with air by pneumostome described in the open and close controlling of described control valve and/or described exhaust outlet.
Adjustable variable-pressure device vacuum oil of the present invention, detection system, described control valve comprises the first control valve and/or the second control valve;
Whether one end of described first control valve is communicated with described pneumostome, the other end of described first control valve and air communication, be communicated with air by pneumostome described in the open and close controlling of described first control valve;
Whether one end of described second control valve is communicated with described exhaust outlet, the other end of described second control valve and air communication, be communicated with air by exhaust outlet described in the open and close controlling of described second control valve.
Adjustable variable-pressure device vacuum oil of the present invention, detection system, one end of described pneumostome, described second tube connector and described first control valve is communicated with by tee pipe coupling sealing and/or one end of described exhaust outlet, described first tube connector and described second control valve is communicated with by tee pipe coupling sealing.
Adjustable variable-pressure device vacuum oil of the present invention, detection system, also comprise:
Total valve, its one end seals with described vacuum extractor and is communicated with, whether the other end is communicated with described pneumostome vacuum pumping valve door sealing with described exhaust outlet vacuum-pumping valve respectively, be communicated with between described vacuum extractor by exhaust outlet vacuum-pumping valve described in the open and close controlling of described total valve and described pneumostome vacuum-pumping valve.
Adjustable variable-pressure device vacuum oil of the present invention, detection system, also comprise:
Pressure vacuum meter, to be sealed with described exhaust outlet vacuum-pumping valve, described pneumostome vacuum-pumping valve and described total valve by four-way pipe fitting and is communicated with.
Adjustable variable-pressure device vacuum oil of the present invention, detection system, described first tube connector selects transparent steel wire tube.
Adjustable variable-pressure device vacuum oil of the present invention, detection system, also comprise:
Aerating device, seals with described total valve and is communicated with.
Adjustable variable-pressure device vacuum oil of the present invention, detection system, described total valve, described vacuum extractor and described aerating device are communicated with by tee pipe coupling sealing.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) the invention provides a kind of adjustable variable-pressure device vacuum oil, detection system, comprise bellow oil conservator and vacuum extractor; The oil conservator shell of described bellow oil conservator is communicated with exhaust outlet with the chamber between bellows; The inner chamber of described bellows is communicated with pneumostome; Described exhaust outlet is sealed with described vacuum extractor by the first tube connector and is communicated with; Whether exhaust outlet vacuum-pumping valve is arranged on described first tube connector, be communicated with between described vacuum extractor by the chamber described in the open and close controlling of described exhaust outlet vacuum-pumping valve between oil conservator shell with described bellows; Described pneumostome is sealed with described vacuum extractor by the second tube connector and is communicated with; Whether pneumostome vacuum-pumping valve is arranged on described second tube connector, be communicated with between described vacuum extractor by the inner chamber of bellows described in the open and close controlling of described pneumostome vacuum-pumping valve; One end of described pneumostome and/or described exhaust outlet also external control valve, whether the other end of described control valve and air communication, be communicated with air by pneumostome described in the open and close controlling of described control valve and/or described exhaust outlet.
When vacuumizing, close described control valve, open described exhaust outlet vacuum-pumping valve and described pneumostome vacuum-pumping valve, vacuum pumping is carried out to bellow oil conservator, because described bellow oil conservator is communicated with transformer with butterfly valve by Buchholz relay, and then the vacuum pumping to whole transformer can be completed.Because be carry out vacuum pumping to exhaust outlet and pneumostome simultaneously, therefore, the chamber between oil conservator shell and bellows and bellows inner chamber are all in vacuum state, make bellows internal and external pressure balance, avoid bellows excessive tensile, cause irrecoverability to damage.Maintenance 2 hours are also needed after being evacuated to setting.After the vacuum degree of transformer meets the requirements, namely inject transformer oil by pouring orifice to transformer.
As the optional execution mode of one, described control valve comprises the first control valve and/or the second control valve; Whether one end of described first control valve is communicated with described pneumostome, the other end of described first control valve and air communication, be communicated with air by pneumostome described in the open and close controlling of described first control valve; Whether one end of described second control valve is communicated with described exhaust outlet, the other end of described second control valve and air communication, be communicated with air by exhaust outlet described in the open and close controlling of described second control valve.
After transformer vacuum oil, for the situation only including the first control valve, if the oil mass in transformer is lower than set point, then close exhaust outlet vacuum-pumping valve, open pneumostome vacuum-pumping valve and close the first control valve simultaneously, continue to carry out vacuum pumping to bellows inner chamber, make bellows external pressure be greater than its chamber pressure, bellows is compressed, thus increases the injection flow to transformer; If the oil mass in transformer is higher than set point, then open exhaust outlet vacuum-pumping valve, close pneumostome vacuum-pumping valve, suitably regulate the first control valve to put into partial air to reduce the vacuum degree of bellows inner chamber simultaneously, the pressure of bellows inner chamber is made to be greater than the pressure of bellows outside, bellows is stretched, thus reduces the injection flow to transformer.For the situation only including the second control valve, if the oil mass in transformer is lower than set point, then close exhaust outlet vacuum-pumping valve, open pneumostome vacuum-pumping valve, suitably regulate the second control valve to put into partial air to reduce the vacuum degree of the chamber between oil conservator shell and bellows simultaneously, make bellows external pressure be greater than its chamber pressure, bellows is compressed, thus increases the injection flow to transformer; If the oil mass in transformer is higher than set point, then close pneumostome vacuum-pumping valve, open exhaust outlet vacuum-pumping valve and close the second control valve simultaneously, continue to vacuumize the chamber between oil conservator shell and bellows, the pressure of bellows inner chamber is made to be greater than the pressure of bellows outside, bellows is stretched, thus reduces the injection flow to transformer.For not only comprising the first control valve but also comprising the situation of the second control valve, if the oil mass in transformer is lower than set point, then close exhaust outlet vacuum-pumping valve, now keep closed condition after the first control valve vacuum oil always, the second control valve is regulated to put into partial air to reduce the vacuum degree of the chamber between oil conservator shell and bellows, make bellows external pressure be greater than its chamber pressure, bellows is compressed, thus increases the injection flow to transformer; If the oil mass in transformer is higher than set point, then close pneumostome vacuum-pumping valve, now keep closed condition after the second control valve vacuum oil always, the first control valve is regulated to put into partial air to reduce the vacuum degree of bellows inner chamber, the pressure of bellows inner chamber is made to be greater than the pressure of bellows outside, bellows is stretched, thus reduces the injection flow to transformer.Therefore, adjustable variable-pressure device vacuum oil of the present invention, detection system, can, by regulating control valve, make the injection flow of transformer close to set point.After transformer pouring oil mass regulates, open control valve, make bellows interior recover normal pressure, vacuum oil operation all terminates.
(2) adjustable variable-pressure device vacuum oil of the present invention, detection system, one end of described pneumostome, described second tube connector and described first control valve is communicated with by tee pipe coupling sealing and/or one end of described exhaust outlet, described first tube connector and described second control valve is communicated with by tee pipe coupling sealing.Because tee pipe coupling has three connectors be communicated with, the sealing between the one end that can realize described pneumostome, described second tube connector and described control valve is very easily communicated with and/or one end of described exhaust outlet, described first tube connector and described second control valve is communicated with by tee pipe coupling sealing.
(3) adjustable variable-pressure device vacuum oil of the present invention, detection system, also comprise: total valve, its one end seals with described vacuum extractor and is communicated with, whether the other end is communicated with described pneumostome vacuum pumping valve door sealing with described exhaust outlet vacuum-pumping valve respectively, be communicated with between described vacuum extractor by exhaust outlet vacuum-pumping valve described in the open and close controlling of described total valve and described pneumostome vacuum-pumping valve.By arranging total valve, with the acting in conjunction of exhaust outlet vacuum-pumping valve, can prevent transformer oil from entering vacuum extractor from the first tube connector, causing the damage of vacuum extractor, achieving dual fail-safe and controlling.
(4) adjustable variable-pressure device vacuum oil of the present invention, detection system, also comprise: pressure vacuum meter, to be sealed be communicated with by four-way pipe fitting with described exhaust outlet vacuum-pumping valve, described pneumostome vacuum-pumping valve and described total valve.Because four-way pipe fitting has four interconnective connectors, the sealing that therefore can realize between described pressure vacuum meter, described exhaust outlet vacuum-pumping valve, described pneumostome vacuum-pumping valve and described total valve is communicated with, operating personnel are by reading pressure vacuum meter, the vacuum degree of transformer can be obtained, and then make accurate judgement to whether continuing to carry out vacuum pumping to transformer.In addition, described pressure vacuum meter, described exhaust outlet vacuum-pumping valve, described pneumostome vacuum-pumping valve and described total valve are communicated with by four-way pipe fitting sealing, have been combined into a valve member, in actual application, are convenient to promote and circulation.
(5) adjustable variable-pressure device vacuum oil of the present invention, detection system, described first tube connector selects transparent steel wire tube.Described transparent steel wire tube is the PVC hose of embedded steel-wire carcass, nontoxic, transparent, intensity is high, corrosion-resistant, fluid conveying is visible, therefore, in vacuum oil operation, operating personnel can observe transformer oil easily and whether enter the first tube connector, if observe transformer oil to enter the first tube connector, exhaust outlet vacuum-pumping valve and total valve can be closed rapidly, avoid transformer oil to enter vacuum extractor and damage is caused to it.
(6) adjustable variable-pressure device vacuum oil of the present invention, detection system, also comprise: aerating device, seals be communicated with described total valve.As the optional execution mode of one, described total valve, described vacuum extractor and described aerating device are communicated with by tee pipe coupling sealing.
After vacuum oil injection operation terminates, close exhaust outlet vacuum-pumping valve, control valve and vacuum extractor, open pneumostome vacuum-pumping valve and total valve, be communicated with because aerating device to be sealed with total valve by tee pipe coupling, therefore, can be pressurizeed to bellows inner chamber by total valve and pneumostome vacuum-pumping valve, make bellows external and internal pressure uneven, stretch out, and then to transformer pressurization, be convenient to carry out the detection of pressure-bearing leak test to transformer.Therefore, the invention provides that a kind of collection vacuumizes, injection flow regulates and pressure-bearing leak test is detected on adjustable variable-pressure device vacuum oil, the detection system of one, decrease dismantlement work amount, improve operating efficiency.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 of the present inventionly only has the adjustable variable-pressure device vacuum oil of the first control valve, the structural representation of detection system;
Fig. 2 of the present inventionly only has the adjustable variable-pressure device vacuum oil of the second control valve, the structural representation of detection system;
Fig. 3 is that existing first control valve of the present invention has again the adjustable variable-pressure device vacuum oil of the second control valve, the structural representation of detection system.
In figure, Reference numeral is expressed as: 1-bellow oil conservator, 2-vacuum extractor, 3-exhaust outlet vacuum-pumping valve, 4-pneumostome vacuum-pumping valve, 5a-first control valve, 5b-second control valve, 6-total valve, 7-pressure vacuum meter, 8-aerating device, 11-oil conservator shell, 12-bellows, 13-exhaust outlet, 14-pneumostome, 15-pouring orifice, 16-butterfly valve, 17-Buchholz relay, 3a-first tube connector, 4a-second tube connector.
Embodiment
Embodiment 1
The present embodiment is supplied to a kind of adjustable variable-pressure device vacuum oil, detection system, as shown in Figure 1, Figure 2, Figure 3 shows, comprises bellow oil conservator 1 and vacuum extractor 2.
The oil conservator shell 11 of described bellow oil conservator 1 is communicated with exhaust outlet 13 with the chamber between bellows 12; The inner chamber of described bellows 12 is communicated with pneumostome 14.
Described exhaust outlet 13 is sealed with described vacuum extractor 2 by the first tube connector 3a and is communicated with; Whether exhaust outlet vacuum-pumping valve 3 is arranged on described first tube connector 3a, be communicated with between described vacuum extractor 2 by the chamber described in the open and close controlling of described exhaust outlet vacuum-pumping valve 3 between oil conservator shell 11 with described bellows 12.
Described pneumostome 14 is sealed with described vacuum extractor 2 by the second tube connector 4a and is communicated with; Whether pneumostome vacuum-pumping valve 4 is arranged on described second tube connector 4a, be communicated with between described vacuum extractor 2 by the inner chamber of bellows 12 described in the open and close controlling of described pneumostome vacuum-pumping valve 4.
One end of described pneumostome 14 and/or described exhaust outlet 13 also external control valve, whether the other end of described control valve and air communication, be communicated with air by pneumostome 14 described in the open and close controlling of described control valve and/or described exhaust outlet 13.
Described vacuum extractor 2 can select vacuum pump.When vacuumizing, close described control valve, open described exhaust outlet vacuum-pumping valve 3 and described pneumostome vacuum-pumping valve 4, vacuum pumping is carried out to bellow oil conservator 1, because described bellow oil conservator 1 is communicated with transformer with butterfly valve 16 by Buchholz relay 17, and then can complete the vacuum pumping to whole transformer.Because be carry out vacuum pumping to exhaust outlet 13 and pneumostome 14 simultaneously, therefore, chamber between oil conservator shell 11 and bellows 12 and bellows 12 inner chamber are all in vacuum state, make bellows 12 internal and external pressure balance, avoid the irrecoverability damage owing to causing bellows 12 excessive tensile.(the transformer retention time of different electric pressure requires different also to need maintenance 2 hours after being evacuated to setting, the general pumpdown time be vacuumize the rear retention time 1/1 to two/3rd between), if after leaving standstill, vacuum degree meets the requirement of oiling, then with the speed of 3 tons/hour-5 tons/hours by transformer oil injection transformer, until the pasta of Buchholz relay is visible, and continue to vacuumize maintenance more than 4 hours, the bubble guaranteeing in Transformer Winding is well separated out and vacuum degree keeps good, illustrate that oil tank of transformer is good with the sealing of bellow oil conservator 1, oiling can be continued by bellow oil conservator 1 in the past.The side of bellow oil conservator 1 is provided with oil level indicator, can be obtained the injection flow of transformer by oil level indicator.If the injection flow of transformer reaches preset value, then stop oiling.
As the optional execution mode of one, the adjustable variable-pressure device vacuum oil described in the present embodiment, detection system, described control valve comprises the first control valve 5a and/or the second control valve 5b.
Whether one end of described first control valve 5a is communicated with described pneumostome 14, the other end of described first control valve 5a and air communication, be communicated with air by pneumostome 14 described in the open and close controlling of described first control valve 5a.
Whether one end of described second control valve 5b is communicated with described exhaust outlet 13, the other end of described second control valve 5b and air communication, be communicated with air by exhaust outlet 13 described in the open and close controlling of described second control valve 5b.
After transformer vacuum oil, as shown in Figure 1, for the situation only including the first control valve 5a, if the oil mass in transformer is lower than set point, then close exhaust outlet vacuum-pumping valve 3, open pneumostome vacuum-pumping valve 4 first control valve 5a maintenance closed condition simultaneously, continue to carry out vacuum pumping to bellows 12 inner chamber, under the promotion of the new transformer oil injected, bellows 12 is compressed, when the external and internal pressure of bellows 12 is in poised state again, oiling stops, thus increases the injection flow to transformer; If the oil mass in transformer is higher than set point, then open exhaust outlet vacuum-pumping valve 3, close pneumostome vacuum-pumping valve 4, suitably regulate the first control valve 5a simultaneously, put into partial air to reduce the vacuum degree of bellows 12 inner chamber, make the pressure of bellows 12 inner chamber be greater than the pressure of bellows 12 outside, bellows 12 is stretched, thus reduces the injection flow to transformer.
As shown in Figure 2, for the situation only including the second control valve 5b, if the oil mass in transformer is lower than set point, then close exhaust outlet vacuum-pumping valve 3, open pneumostome vacuum-pumping valve 4, suitably regulate the second control valve 5b simultaneously, put into partial air to reduce the vacuum degree of the chamber between oil conservator shell 11 and bellows 12, make bellows 12 external pressure be greater than its chamber pressure, bellows 12 is compressed, thus increases the injection flow to transformer; If the oil mass in transformer is higher than set point, then close pneumostome vacuum-pumping valve 4, open exhaust outlet vacuum-pumping valve 3 and close the second control valve 5b simultaneously, continue to vacuumize the chamber between oil conservator shell 11 and bellows 12, the pressure of bellows 12 inner chamber is made to be greater than the pressure of bellows 12 outside, bellows 12 is stretched, thus reduces the injection flow to transformer.
As shown in Figure 3, for not only comprising the first control valve 5a but also comprising the situation of the second control valve 5b, if the oil mass in transformer is lower than set point, then close exhaust outlet vacuum-pumping valve 3, open pneumostome vacuum-pumping valve 4, continue to vacuumize the inner chamber of bellows 12, now keep closed condition after the first control valve 5a vacuum oil always, the second control valve 5b is regulated to put into partial air to reduce the vacuum degree of the chamber between oil conservator shell 11 and bellows 12, bellows 12 external pressure is made to be greater than its chamber pressure, bellows 12 is compressed, thus the injection flow increased transformer, if the oil mass in transformer is higher than set point, then close pneumostome vacuum-pumping valve 4, open exhaust outlet vacuum-pumping valve 3, now keep closed condition after the second control valve 5b vacuum oil always, continue to vacuumize the chamber between oil conservator shell 11 and bellows 12, the first control valve 5a is regulated to put into partial air to reduce the vacuum degree of bellows 12 inner chamber, the pressure of bellows 12 inner chamber is made to be greater than the pressure of bellows 12 outside, bellows 12 is stretched, thus reduces the injection flow to transformer.
Above-mentioned three kinds of regulative modes, all by regulating the external and internal pressure of bellows 12, can control bellows 12 and stretch or shrink, realizing the adjustment to transformer pouring oil mass.Wherein, most preferred scheme is the situation only including the first control valve 5a, because the first control valve 5a is only communicated with outside air with bellows 12 inner chamber, and the inner chamber of bellows 12 does not contact with the transformer oil in bellow oil conservator, can guarantee when air enters the inner chamber of bellows 12, do not contact with transformer oil, avoid the pollution of air to transformer oil.
Adjustable variable-pressure device vacuum oil described in the present embodiment, detection system, by regulating control valve, can finely tune the injection flow of transformer, making the injection flow of transformer more close to set point.After transformer pouring oil mass regulates, open control valve, make bellows 12 inside recover normal pressure, vacuum oil operation all terminates.
As the optional execution mode of one, as shown in Figure 1, Figure 2, Figure 3 shows, adjustable variable-pressure device vacuum oil described in the present embodiment, detection system, one end of described pneumostome 14, described second tube connector 4a and described first control valve 5a is communicated with by tee pipe coupling sealing and/or one end of described exhaust outlet 13, described first tube connector 3a and described second control valve 5b is communicated with by tee pipe coupling sealing.
Because tee pipe coupling has three connectors be communicated with, the sealing between the one end that can realize described pneumostome, described second tube connector and described control valve is very easily communicated with and/or one end of described exhaust outlet, described first tube connector and described second control valve is communicated with by tee pipe coupling sealing.
Embodiment 2
On the basis of embodiment 1, the adjustable variable-pressure device vacuum oil described in the present embodiment, detection system, as shown in Figure 1, Figure 2, Figure 3 shows, also comprise:
Total valve 6, its one end seals with described vacuum extractor 2 and is communicated with, whether the other end seals with described pneumostome vacuum-pumping valve 4 with described exhaust outlet vacuum-pumping valve 3 respectively and is communicated with, by exhaust outlet vacuum-pumping valve 3 described in the open and close controlling of described total valve 6 be communicated with between described pneumostome vacuum-pumping valve 4 with described vacuum extractor 2.
By arranging total valve 6, can with exhaust outlet vacuum-pumping valve 3 acting in conjunction, when preventing vacuum oil, transformer oil enters vacuum extractor 2 from the first tube connector 3a, causes the damage of vacuum extractor 2, achieves dual fail-safe and controls.
As one preferred embodiment, the adjustable variable-pressure device vacuum oil described in the present embodiment, detection system, also comprise:
Pressure vacuum meter 7, to be sealed with described exhaust outlet vacuum-pumping valve 3, described pneumostome vacuum-pumping valve 4 and described total valve 6 by four-way pipe fitting and is communicated with.
Because four-way pipe fitting has four interconnective connectors, the sealing that therefore can realize between described pressure vacuum meter 7, described exhaust outlet vacuum-pumping valve 3, described pneumostome vacuum-pumping valve 4 and described total valve 6 is communicated with, operating personnel are by reading pressure vacuum meter, the vacuum degree of transformer can be obtained, and then make accurate judgement to whether continuing to carry out vacuum pumping to transformer.In addition, described pressure vacuum meter 7, described exhaust outlet vacuum-pumping valve 3, described pneumostome vacuum-pumping valve 4 and described total valve 6 are communicated with by four-way pipe fitting sealing, have been combined into a valve member, in actual application, are convenient to promote and circulation.
As one preferred embodiment, the adjustable variable-pressure device vacuum oil described in the present embodiment, detection system, described first tube connector 3a selects transparent steel wire tube.
Described transparent steel wire tube is the PVC hose of embedded steel-wire carcass, nontoxic, transparent, intensity is high, corrosion-resistant, fluid conveying is visible, therefore, in vacuum oil operation, operating personnel can observe transformer oil easily and whether enter the first tube connector 3a, if observe transformer oil to enter the first tube connector 3a, exhaust outlet vacuum-pumping valve 3 and total valve 6 can be closed rapidly, avoid transformer oil to enter vacuum extractor 2 and damage is caused to it.
Embodiment 3
On the basis of embodiment 1 or embodiment 2, the adjustable variable-pressure device vacuum oil described in the present embodiment, detection system, as shown in Figure 1, Figure 2, Figure 3 shows, also comprise:
Aerating device 8, seals with described total valve 6 and is communicated with.
Described aerating device 8 can select inflator pump.
As the optional execution mode of one, the adjustable variable-pressure device vacuum oil described in the present embodiment, detection system, described total valve 6, described vacuum extractor 2 and described aerating device 8 are communicated with by tee pipe coupling sealing.
After vacuum oil injection operation terminates, close exhaust outlet vacuum-pumping valve 3, control valve and vacuum extractor 2, open pneumostome vacuum-pumping valve 4 and total valve 6, be communicated with because aerating device 8 to be sealed with total valve 6 by tee pipe coupling, therefore, open aerating device 8, air pressure can be added to bellows 12 inner chamber by total valve 6 and pneumostome vacuum-pumping valve 4, make bellows 12 external and internal pressure uneven, stretch out, and then transformer is pressurizeed.After general aerating is depressed into 0.035pa, close total valve 6, stop inflation.Keep 12 hours, if ne-leakage and exception, illustrate that pressure-bearing leak test is qualified.Therefore, present embodiments provide that a kind of collection vacuumizes, injection flow regulates and pressure-bearing leak test is detected on adjustable variable-pressure device vacuum oil, the detection system of one, decrease dismantlement work amount, improve operating efficiency.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (8)
1. adjustable variable-pressure device vacuum oil, a detection system, is characterized in that, comprises bellow oil conservator (1) and vacuum extractor (2);
The oil conservator shell (11) of described bellow oil conservator (1) is communicated with exhaust outlet (13) with the chamber between bellows (12); The inner chamber of described bellows (12) is communicated with pneumostome (14);
Described exhaust outlet (13) to be sealed with described vacuum extractor (2) by the first tube connector (3a) and is communicated with; Whether exhaust outlet vacuum-pumping valve (3) is arranged on described first tube connector (3a), be communicated with between described vacuum extractor (2) by the chamber described in the open and close controlling of described exhaust outlet vacuum-pumping valve (3) between oil conservator shell (11) with described bellows (12);
Described pneumostome (14) to be sealed with described vacuum extractor (2) by the second tube connector (4a) and is communicated with; Whether pneumostome vacuum-pumping valve (4) is arranged on described second tube connector (4a), be communicated with between described vacuum extractor (2) by the inner chamber of bellows (12) described in the open and close controlling of described pneumostome vacuum-pumping valve (4);
One end of described exhaust outlet (13) also external control valve, whether the other end of described control valve and air communication, be communicated with air by exhaust outlet (13) described in the open and close controlling of described control valve.
2. adjustable variable-pressure device vacuum oil according to claim 1, detection system, is characterized in that:
Described control valve comprises the second control valve (5b);
One end of described second control valve (5b) is communicated with described exhaust outlet (13), whether the other end of described second control valve (5b) and air communication, be communicated with air by exhaust outlet (13) described in the open and close controlling of described second control valve (5b).
3. adjustable variable-pressure device vacuum oil according to claim 2, detection system, is characterized in that:
One end of described exhaust outlet (13), described first tube connector (3a) and described second control valve (5b) is communicated with by tee pipe coupling sealing.
4. adjustable variable-pressure device vacuum oil according to claim 3, detection system, is characterized in that, also comprise:
Total valve (6), its one end seals with described vacuum extractor (2) and is communicated with, whether the other end seals with described pneumostome vacuum-pumping valve (4) with described exhaust outlet vacuum-pumping valve (3) respectively and is communicated with, by exhaust outlet vacuum-pumping valve (3) described in the open and close controlling of described total valve (6) be communicated with between described pneumostome vacuum-pumping valve (4) with described vacuum extractor (2).
5. adjustable variable-pressure device vacuum oil according to claim 4, detection system, is characterized in that, also comprise:
Pressure vacuum meter (7), to be sealed with described exhaust outlet vacuum-pumping valve (3), described pneumostome vacuum-pumping valve (4) and described total valve (6) by four-way pipe fitting and is communicated with.
6. adjustable variable-pressure device vacuum oil according to claim 5, detection system, is characterized in that:
Described first tube connector (3a) selects transparent steel wire tube.
7., according to claim 4-6 arbitrary described adjustable variable-pressure device vacuum oil, detection system, it is characterized in that, also comprise:
Aerating device (8), seals with described total valve (6) and is communicated with.
8. adjustable variable-pressure device vacuum oil according to claim 7, detection system, is characterized in that:
Described total valve (6), described vacuum extractor (2) and described aerating device (8) are communicated with by tee pipe coupling sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510467468.6A CN105047376B (en) | 2013-11-15 | 2013-11-15 | Adjustable variable-pressure device vacuum oil, detecting system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574281.7A CN103680829B (en) | 2013-11-15 | 2013-11-15 | Transformer vacuum oil, detection system |
| CN201510467468.6A CN105047376B (en) | 2013-11-15 | 2013-11-15 | Adjustable variable-pressure device vacuum oil, detecting system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310574281.7A Division CN103680829B (en) | 2013-11-15 | 2013-11-15 | Transformer vacuum oil, detection system |
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| Publication Number | Publication Date |
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| CN105047376A true CN105047376A (en) | 2015-11-11 |
| CN105047376B CN105047376B (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310574281.7A Active CN103680829B (en) | 2013-11-15 | 2013-11-15 | Transformer vacuum oil, detection system |
| CN201510467469.0A Active CN105097202B (en) | 2013-11-15 | 2013-11-15 | A kind of transformer vacuum oil vacuumized using vavuum pump, detecting system |
| CN201510467468.6A Active CN105047376B (en) | 2013-11-15 | 2013-11-15 | Adjustable variable-pressure device vacuum oil, detecting system |
| CN201510467486.4A Active CN105097203B (en) | 2013-11-15 | 2013-11-15 | A kind of transformer vacuum oil of bidirectional modulation, detecting system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310574281.7A Active CN103680829B (en) | 2013-11-15 | 2013-11-15 | Transformer vacuum oil, detection system |
| CN201510467469.0A Active CN105097202B (en) | 2013-11-15 | 2013-11-15 | A kind of transformer vacuum oil vacuumized using vavuum pump, detecting system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510467486.4A Active CN105097203B (en) | 2013-11-15 | 2013-11-15 | A kind of transformer vacuum oil of bidirectional modulation, detecting system |
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| CN110133406A (en) * | 2019-05-21 | 2019-08-16 | 保定天威保变电气股份有限公司 | A kind of air charging system and inflation method of the test of for transformer gas collection |
| CN112978664A (en) * | 2021-04-28 | 2021-06-18 | 中国科学院空间应用工程与技术中心 | Reusable filling device, system and method applied to spacecraft |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105047376B (en) | 2017-12-15 |
| CN105097202B (en) | 2017-12-15 |
| CN103680829A (en) | 2014-03-26 |
| CN105097203A (en) | 2015-11-25 |
| CN105097202A (en) | 2015-11-25 |
| CN105097203B (en) | 2017-12-15 |
| CN103680829B (en) | 2015-12-16 |
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