CN203444919U - Vacuum oiling and detecting system for transformer - Google Patents
Vacuum oiling and detecting system for transformer Download PDFInfo
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- CN203444919U CN203444919U CN201320724671.3U CN201320724671U CN203444919U CN 203444919 U CN203444919 U CN 203444919U CN 201320724671 U CN201320724671 U CN 201320724671U CN 203444919 U CN203444919 U CN 203444919U
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Abstract
The utility model relates to a vacuum oiling and detecting system for a transformer. The vacuum oiling and detecting system for the transformer comprises a corrugated oil conservator and a vacuumizing device, wherein a chamber between the shell of the oil conservator and a corrugated pipe is communicated with an exhaust port; the inner cavity of the corrugated pipe is communicated with a breathing hole; the exhaust port is hermetically communicated with the vacuumizing device by virtue of a first connecting pipe; an exhaust port vacuumizing valve is arranged on the first connecting pipe, whether the chamber between the shell of the oil conservator and the corrugated pipe is communicated with the vacuumizing device or not is controlled by virtue of opening and closing of the exhaust port vacuumizing valve; the breathing hole is hermetically communicated with the vacuumizing device by virtue of a second connecting pipe; a breathing hole vacuumizing device is arranged on the second connecting pipe, and whether the inner cavity of the corrugated pipe is communicated with the vacuumizing device or not is controlled by virtue of opening and closing of the breathing hole vacuumizing device; the breathing hole and/or exhaust port are/is also externally connected with one end of a regulating valve, the other end of the regulating valve is communicated with the air, and whether the breathing hole and/or exhaust port and/is communicated with the air or not is controlled by virtue of opening and closing of the regulating valve.
Description
Technical field
The utility model relates to a kind of transformer vacuum oil, detection system.A kind of vacuum oil, detection system being applicable to the transformer of bellow oil conservator specifically.
Background technology
Oil conservator is commonly called as conservator, and traverse, in oil tank of transformer top, communicates 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 transformer oil is met cold contraction, transformer oil flows to fuel tank by oil conservator.Therefore,, by oil conservator is installed, expansion or the contraction of the volume can compensator transformer oil producing due to variations in temperature can completely cut off transformer oil and air simultaneously, are the important protection assemblies of transformer safe operation.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 and cause leakage of oil during use, and by bellow oil conservator, replaced gradually.
Bellow oil conservator, built-in corrugated pipe.Described bellows inner chamber is the air bag communicating with atmosphere, the movable end that its one end is free-extension, and the other end is fixed by welding and the end plate of bellow oil conservator.Transformer oil is stored between oil conservator shell and bellows outside, by butterfly valve and Buchholz relay, is communicated with the fuel tank of transformer.Bellows interior is air, and its fixing one end communicates with ambient atmosphere by pneumostome.Oil conservator shell is communicated with outside air by exhaust outlet with the chamber between bellows.Generally, described exhaust close, described pneumostome is opened, transformer oil volume Yin Wendu in oil tank of transformer raises and while increasing, transformer oil dilatation enters in the chamber between oil conservator shell and bellows by Buchholz relay and butterfly valve, make the pressure in chamber be greater than the pressure of ripple inner air tube, and then by bellows compression, the dilatation of transformer oil is transferred in the chamber between oil conservator shell and bellows.When bellows pressurized, the unnecessary air of its inner chamber is discharged through pneumostome, makes whole oil conservator in pressure balance.Transformer oil volume Yin Wendu in oil tank of transformer reduces and while dwindling, 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 being stored between oil conservator shell and bellows is sent back in fuel tank, make fuel tank be full of all the time transformer oil.In the process of extending at bellows, 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 again in new pressure balance.Therefore when transformer oil varies with temperature generation volumetric expansion or shrinks, can impel bellows compression or stretch, thereby it is big or small to change bellow oil conservator oil pocket, realize the volume compensation under hermetically sealed condition.
In order effectively to expel the bubble in transformer, improve the insulation level of transformer, especially in the situation that getting together between formula coil turn that potential difference is larger, in order to prevent that bubble from causing breakdown between adjacent turns accident, all wants vacuum oil 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 ", a kind of partial vacuum oiling device and technique thereof being mainly applicable to the transformer of bellow oil conservator is disclosed, concrete scheme is, by vacuum unit, 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 unit and three-way pipe by-pass valve control, startup vacuum unit carries out vacuum pumping by the exhaust outlet of transformer bellow oil conservator to transformer, when the vacuum degree in transformer reaches oiling condition, close vacuum-pumping valve, open oiling valve transformer is carried out to vacuum oil.But this mode of operation, exhaust outlet by bellow oil conservator carries out vacuum pumping to transformer, making the chamber between oil conservator shell and bellows is vacuum, and bellows inner chamber is air, can make bellows chamber pressure much larger than the pressure of the chamber between oil conservator shell and bellows, cause bellows external and internal pressure uneven, easily make bellows excessively stretch and cause distortion.
Utility model content
For this reason, technical problem to be solved in the utility model is in prior art, vacuum easily causes bellows external and internal pressure uneven, cause the excessive stretcher strain of bellows, thereby provide in a kind of vacuum, can make transformer vacuum oil, the detection system of bellows internal and external pressure balance.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
The utility model provides a kind of transformer vacuum oil, detection system, comprises 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 communicated with described vacuum extractor sealing by the first tube connector; Exhaust outlet vacuum-pumping valve is arranged on described the first tube connector, by the chamber between oil conservator shell described in the open and close controlling of described exhaust outlet vacuum-pumping valve and described bellows with whether being communicated with between described vacuum extractor;
Described pneumostome is communicated with described vacuum extractor sealing by the second tube connector; Pneumostome vacuum-pumping valve is arranged on described the second tube connector, and whether the inner chamber by bellows described in the open and close controlling of described pneumostome vacuum-pumping valve is with being communicated with between described vacuum extractor;
Described pneumostome and/or described exhaust outlet be one end of external control valve also, and whether the other end of described control valve and air communication are communicated with air by pneumostome described in the open and close controlling of described control valve and/or described exhaust outlet.
Transformer vacuum oil described in the utility model, detection system, described control valve comprises the first control valve and/or the second control valve;
One end of described the first control valve is communicated with described pneumostome, and whether the other end of described the first control valve and air communication are communicated with air by pneumostome described in the open and close controlling of described the first control valve;
One end of described the second control valve is communicated with described exhaust outlet, and whether the other end of described the second control valve and air communication are communicated with air by exhaust outlet described in the open and close controlling of described the second control valve.
Transformer vacuum oil described in the utility model, detection system, one end that one end of described pneumostome, described the second tube connector and described the first control valve seals connection and/or described exhaust outlet, described the first tube connector and described the second control valve by tee pipe coupling seals connection by tee pipe coupling.
Transformer vacuum oil described in the utility model, detection system, also comprise:
Total valve, its one end is communicated with described vacuum extractor sealing, whether the other end is communicated with described exhaust outlet vacuum-pumping valve and described pneumostome vacuum pumping valve door sealing respectively, by between exhaust outlet vacuum-pumping valve described in the open and close controlling of described total valve and described pneumostome vacuum-pumping valve and described vacuum extractor, be communicated with.
Transformer vacuum oil described in the utility model, detection system, also comprise:
Pressure vacuum meter, is communicated with described exhaust outlet vacuum-pumping valve, described pneumostome vacuum-pumping valve and the sealing of described total valve by four-way pipe fitting.
Transformer vacuum oil described in the utility model, detection system, described the first tube connector is selected transparent steel wire tube.
Transformer vacuum oil described in the utility model, detection system, also comprise:
Aerating device, is communicated with described total valve sealing.
Transformer vacuum oil described in the utility model, detection system, described total valve, described vacuum extractor and described aerating device seal connection by tee pipe coupling.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) the utility model provides a kind of transformer vacuum oil, detection system, comprises 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 communicated with described vacuum extractor sealing by the first tube connector; Exhaust outlet vacuum-pumping valve is arranged on described the first tube connector, by the chamber between oil conservator shell described in the open and close controlling of described exhaust outlet vacuum-pumping valve and described bellows with whether being communicated with between described vacuum extractor; Described pneumostome is communicated with described vacuum extractor sealing by the second tube connector; Pneumostome vacuum-pumping valve is arranged on described the second tube connector, and whether the inner chamber by bellows described in the open and close controlling of described pneumostome vacuum-pumping valve is with being communicated with between described vacuum extractor; Described pneumostome and/or described exhaust outlet be one end of external control valve also, and whether the other end of described control valve and air communication are communicated with air by pneumostome described in the open and close controlling of described control valve and/or described exhaust outlet.
While vacuumizing, close described control valve, open described exhaust outlet vacuum-pumping valve and described pneumostome vacuum-pumping valve, bellow oil conservator is carried out to vacuum pumping, because described bellow oil conservator is communicated with transformer by Buchholz relay and butterfly valve, and then can complete the vacuum pumping to whole transformer.Because be, exhaust outlet and pneumostome are carried out to vacuum pumping simultaneously, therefore, the chamber between oil conservator shell and bellows and bellows inner chamber, all in vacuum state, make bellows internal and external pressure balance, avoid bellows excessively to stretch, caused irrecoverability damage.After being evacuated to setting, also need to keep 2 hours.After the vacuum degree of transformer meets the requirements, can to transformer, inject transformer oil by pouring orifice.
As a kind of optional execution mode, described control valve comprises the first control valve and/or the second control valve; One end of described the first control valve is communicated with described pneumostome, and whether the other end of described the first control valve and air communication are communicated with air by pneumostome described in the open and close controlling of described the first control valve; One end of described the second control valve is communicated with described exhaust outlet, and whether the other end of described the second control valve and air communication are communicated with air by exhaust outlet described in the open and close controlling of described the second control valve.
After transformer vacuum oil, for the situation that only includes the first control valve, if the oil mass in transformer is lower than set point, close exhaust outlet vacuum-pumping valve, open pneumostome vacuum-pumping valve and close the first control valve simultaneously, continue bellows inner chamber to carry out vacuum pumping, make bellows external pressure be greater than its chamber pressure, bellows is compressed, thereby increases the injection flow to transformer; If the oil mass in transformer is higher than set point, open exhaust outlet vacuum-pumping valve, close pneumostome vacuum-pumping valve, suitably regulate the first control valve to put into part air to reduce the vacuum degree of bellows inner chamber simultaneously, make the pressure of bellows inner chamber be greater than the pressure of bellows outside, bellows is stretched, thereby reduces the injection flow to transformer.For the situation that only includes the second control valve, if the oil mass in transformer is lower than set point, close exhaust outlet vacuum-pumping valve, open pneumostome vacuum-pumping valve, suitably regulate the second control valve to put into part 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, thereby increases the injection flow to transformer; If the oil mass in transformer is higher than set point, close pneumostome vacuum-pumping valve, open exhaust outlet vacuum-pumping valve and close the second control valve simultaneously, continuation vacuumizes the chamber between oil conservator shell and bellows, make the pressure of bellows inner chamber be greater than the pressure of bellows outside, bellows is stretched, thereby 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, close exhaust outlet vacuum-pumping valve, now after the first control valve vacuum oil, keep closed condition always, regulate the second control valve to put into part 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, thereby increases the injection flow to transformer; If the oil mass in transformer is higher than set point, close pneumostome vacuum-pumping valve, now after the second control valve vacuum oil, keep closed condition always, regulate the first control valve to put into part air to reduce the vacuum degree of bellows inner chamber, make the pressure of bellows inner chamber be greater than the pressure of bellows outside, bellows is stretched, thereby reduces the injection flow to transformer.Therefore, transformer vacuum oil described in the utility model, detection system, can, by regulating control valve, make the injection flow of transformer approach set point.After transformer pouring oil mass regulates, open control valve, make bellows interior recover normal pressure, vacuum oil operation all finishes.
(2) transformer vacuum oil described in the utility model, detection system, one end that one end of described pneumostome, described the second tube connector and described the first control valve seals connection and/or described exhaust outlet, described the first tube connector and described the second control valve by tee pipe coupling seals connection by tee pipe coupling.Because tee pipe coupling has the connector of three connections, can realize very easily that sealing between one end of described pneumostome, described the second tube connector and described control valve is communicated with and/or one end of described exhaust outlet, described the first tube connector and described the second control valve seals connection by tee pipe coupling.
(3) transformer vacuum oil described in the utility model, detection system, also comprise: total valve, its one end is communicated with described vacuum extractor sealing, whether the other end is communicated with described exhaust outlet vacuum-pumping valve and described pneumostome vacuum pumping valve door sealing respectively, by between exhaust outlet vacuum-pumping valve described in the open and close controlling of described total valve and described pneumostome vacuum-pumping valve and described vacuum extractor, be communicated with.By total valve is set, can prevent that transformer oil from entering vacuum extractor from the first tube connector with the acting in conjunction of exhaust outlet vacuum-pumping valve, cause the damage of vacuum extractor, realized dual fail-safe control.
(4) transformer vacuum oil described in the utility model, detection system, also comprise: pressure vacuum meter, is communicated with described exhaust outlet vacuum-pumping valve, described pneumostome vacuum-pumping valve and the sealing of described total valve by four-way pipe fitting.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, can obtain the vacuum degree of transformer, and then make accurate judgement to whether continuing that transformer is carried out to vacuum pumping.In addition, described pressure vacuum meter, described exhaust outlet vacuum-pumping valve, described pneumostome vacuum-pumping valve and described total valve seal connection by four-way pipe fitting, have been combined into a valve member, in actual application, are convenient to promote and circulation.
(5) transformer vacuum oil described in the utility model, detection system, described the first tube connector is selected transparent steel wire tube.The PVC flexible pipe that described transparent steel wire tube is embedded steel-wire carcass, nontoxic, transparent, intensity is high, corrosion-resistant, fluid is carried visible, therefore, and in vacuum oil operation, operating personnel can observe easily transformer oil and whether enter the first tube connector, if observe transformer oil, enter the first tube connector, can close rapidly exhaust outlet vacuum-pumping valve and total valve, avoid transformer oil to enter vacuum extractor it is caused to damage.
(6) transformer vacuum oil described in the utility model, detection system, also comprise: aerating device, is communicated with described total valve sealing.As a kind of optional execution mode, described total valve, described vacuum extractor and described aerating device seal connection by tee pipe coupling.
After vacuum oil EO, close exhaust outlet vacuum-pumping valve, control valve and vacuum extractor, open pneumostome vacuum-pumping valve and total valve, because aerating device is communicated with total valve sealing by tee pipe coupling, therefore, by total valve and pneumostome vacuum-pumping valve, can pressurize to bellows inner chamber, make bellows external and internal pressure uneven, outwards stretch, and then to transformer pressurization, be convenient to transformer to carry out the detection of pressure-bearing leak test.Therefore, the utility model provides that a kind of collection vacuumizes, injection flow regulates and pressure-bearing leak test is detected on transformer vacuum oil, the detection system of one, has reduced dismantlement work amount, has improved operating efficiency.
Accompanying drawing explanation
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the only have transformer vacuum oil of the first control valve, the structural representation of detection system described in the utility model;
Fig. 2 is the only have transformer vacuum oil of the second control valve, the structural representation of detection system described in the utility model;
Fig. 3 is that existing the first control valve described in the utility model has again the transformer 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-the first control valve, 5b-the 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-the first tube connector, 4a-the second tube connector.
Embodiment
Embodiment 1
The present embodiment has offered a kind of transformer 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 communicated with described vacuum extractor 2 sealings by the first tube connector 3a; It is upper that exhaust outlet vacuum-pumping valve 3 is arranged at described the first tube connector 3a, by the chamber between oil conservator shell 11 described in the open and close controlling of described exhaust outlet vacuum-pumping valve 3 and described bellows 12 with whether being communicated with between described vacuum extractor 2.
Described pneumostome 14 is communicated with described vacuum extractor 2 sealings by the second tube connector 4a; It is upper that pneumostome vacuum-pumping valve 4 is arranged at described the second tube connector 4a, and whether the inner chamber by bellows 12 described in the open and close controlling of described pneumostome vacuum-pumping valve 4 is with being communicated with between described vacuum extractor 2.
Described pneumostome 14 and/or described exhaust outlet 13 be one end of external control valve also, and whether the other end of described control valve and air communication are 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 be selected vacuum pump.While vacuumizing, close described control valve, open described exhaust outlet vacuum-pumping valve 3 and described pneumostome vacuum-pumping valve 4, bellow oil conservator 1 is carried out to vacuum pumping, because described bellow oil conservator 1 is communicated with transformer by Buchholz relay 17 and butterfly valve 16, and then can complete the vacuum pumping to whole transformer.Because be, exhaust outlet 13 and pneumostome 14 are carried out to vacuum pumping simultaneously, therefore, chamber between oil conservator shell 11 and bellows 12 and bellows 12 inner chambers are all in vacuum state, make bellows 12 internal and external pressure balances, avoided due to the irrecoverability damage that bellows 12 is excessively stretched and caused.Being evacuated to also needs to keep that (the transformer retention time of different electric pressures required different in 2 hours after setting, the general pumpdown time be vacuumize the rear retention time 1/3rd to 1/2nd between), if after standing, vacuum degree meets the requirement of oiling, with the speed of 3 tons/hour-5 tons/hour by transformer oil injection transformer, until the pasta of Buchholz relay is visible, and continue to vacuumize maintenance more than 4 hours, guarantee that bubble in Transformer Winding is well separated out and vacuum keep is good, illustrate that oil tank of transformer is good with the sealing of bellow oil conservator 1, bellow oil conservator 1 continued oiling in the past.The side of bellow oil conservator 1 is provided with oil level indicator, can obtain by oil level indicator the injection flow of transformer.If the injection flow of transformer reaches preset value, stop oiling.
As a kind of optional execution mode, transformer vacuum oil, detection system described in the present embodiment, described control valve comprises the first control valve 5a and/or the second control valve 5b.
One end of described the first control valve 5a is communicated with described pneumostome 14, and whether the other end of described the first control valve 5a and air communication are communicated with air by pneumostome 14 described in the open and close controlling of described the first control valve 5a.
One end of described the second control valve 5b is communicated with described exhaust outlet 13, and whether the other end of described the second control valve 5b and air communication are communicated with air by exhaust outlet 13 described in the open and close controlling of described the second control valve 5b.
After transformer vacuum oil, as shown in Figure 1, for the situation that only includes the first control valve 5a, if the oil mass in transformer is lower than set point, close exhaust outlet vacuum-pumping valve 3, open pneumostome vacuum-pumping valve 4 the first control valve 5a maintenance closed condition simultaneously, continuation is carried out vacuum pumping to bellows 12 inner chambers, under the promotion of the new transformer oil injecting, bellows 12 is compressed, when the external and internal pressure of bellows 12 is during again in poised state, oiling stops, thereby has increased the injection flow to transformer; If the oil mass in transformer is higher than set point, open exhaust outlet vacuum-pumping valve 3, close pneumostome vacuum-pumping valve 4, suitably regulate the first control valve 5a simultaneously, put into part air to reduce the vacuum degree of bellows 12 inner chambers, make the pressure of bellows 12 inner chambers be greater than the pressure of bellows 12 outsides, bellows 12 is stretched, thereby reduces the injection flow to transformer.
As shown in Figure 2, for the situation that only includes the second control valve 5b, if the oil mass in transformer is lower than set point, close exhaust outlet vacuum-pumping valve 3, open pneumostome vacuum-pumping valve 4, suitably regulate the second control valve 5b simultaneously, put into part air to reduce the vacuum degree of the chamber between oil conservator shell 11 and bellows 12, make bellows 12 external pressures be greater than its chamber pressure, bellows 12 is compressed, thereby increases the injection flow to transformer; If the oil mass in transformer is higher than set point, close pneumostome vacuum-pumping valve 4, open exhaust outlet vacuum-pumping valve 3 and close the second control valve 5b simultaneously, continuation vacuumizes the chamber between oil conservator shell 11 and bellows 12, make the pressure of bellows 12 inner chambers be greater than the pressure of bellows 12 outsides, bellows 12 is stretched, thereby 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, close exhaust outlet vacuum-pumping valve 3, open pneumostome vacuum-pumping valve 4, continuation vacuumizes the inner chamber of bellows 12, now after the first control valve 5a vacuum oil, keep closed condition always, regulate the second control valve 5b to put into part air to reduce the vacuum degree of the chamber between oil conservator shell 11 and bellows 12, make bellows 12 external pressures be greater than its chamber pressure, bellows 12 is compressed, thereby increase the injection flow to transformer, if the oil mass in transformer is higher than set point, close pneumostome vacuum-pumping valve 4, open exhaust outlet vacuum-pumping valve 3, now after the second control valve 5b vacuum oil, keep closed condition always, continuation vacuumizes the chamber between oil conservator shell 11 and bellows 12, regulate the first control valve 5a to put into part air to reduce the vacuum degree of bellows 12 inner chambers, make the pressure of bellows 12 inner chambers be greater than the pressure of bellows 12 outsides, bellows 12 is stretched, thereby reduces the injection flow to transformer.
Above-mentioned three kinds of regulative modes, all can control bellows 12 and stretch or shrink by regulating the external and internal pressure of bellows 12, realize the adjusting to transformer pouring oil mass.Wherein, most preferred scheme is the situation that only includes the first control valve 5a, because the first control valve 5a is only communicated with bellows 12 inner chambers and outside air, 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, avoided the pollution of air to transformer oil.
Transformer vacuum oil described in the present embodiment, detection system, can finely tune the injection flow of transformer by regulating control valve, makes the injection flow of transformer more approach set point.After transformer pouring oil mass regulates, open control valve, make the inner normal pressure that recovers of bellows 12, vacuum oil operation all finishes.
As a kind of optional execution mode, as shown in Figure 1, Figure 2, Figure 3 shows, transformer vacuum oil described in the present embodiment, detection system, one end that one end of described pneumostome 14, described the second tube connector 4a and described the first control valve 5a seals connection and/or described exhaust outlet 13, described the first tube connector 3a and described the second control valve 5b by tee pipe coupling seals connection by tee pipe coupling.
Because tee pipe coupling has the connector of three connections, can realize very easily that sealing between one end of described pneumostome, described the second tube connector and described control valve is communicated with and/or one end of described exhaust outlet, described the first tube connector and described the second control valve seals connection by tee pipe coupling.
Embodiment 2
On the basis of embodiment 1, transformer vacuum oil, detection system described in the present embodiment, as shown in Figure 1, Figure 2, Figure 3 shows, also comprise:
Total valve 6, its one end is communicated with described vacuum extractor 2 sealings, whether the other end is communicated with 4 sealings of described exhaust outlet vacuum-pumping valve 3 and described pneumostome vacuum-pumping valve respectively, by between exhaust outlet vacuum-pumping valve 3 described in the open and close controlling of described total valve 6 and described pneumostome vacuum-pumping valve 4 and described vacuum extractor 2, be communicated with.
By total valve 6 is set, can be with 3 actings in conjunction of exhaust outlet vacuum-pumping valve, while preventing vacuum oil, transformer oil enters vacuum extractor 2 from the first tube connector 3a, causes the damage of vacuum extractor 2, has realized dual fail-safe control.
As preferred embodiment a kind of, transformer vacuum oil, detection system described in the present embodiment, also comprise:
Pressure vacuum meter 7, is communicated with described exhaust outlet vacuum-pumping valve 3, described pneumostome vacuum-pumping valve 4 and 6 sealings of described total valve by four-way pipe fitting.
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, can obtain the vacuum degree of transformer, and then make accurate judgement to whether continuing that transformer is carried out to vacuum pumping.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 seal connection by four-way pipe fitting, have been combined into a valve member, in actual application, are convenient to promote and circulation.
As preferred embodiment a kind of, transformer vacuum oil, detection system described in the present embodiment, described the first tube connector 3a selects transparent steel wire tube.
The PVC flexible pipe that described transparent steel wire tube is embedded steel-wire carcass, nontoxic, transparent, intensity is high, corrosion-resistant, fluid is carried visible, therefore, and in vacuum oil operation, operating personnel can observe easily transformer oil and whether enter the first tube connector 3a, if observe transformer oil, enter the first tube connector 3a, can close rapidly exhaust outlet vacuum-pumping valve 3 and total valve 6, avoid transformer oil to enter vacuum extractor 2 it is caused to damage.
Embodiment 3
On the basis of embodiment 1 or embodiment 2, transformer vacuum oil, detection system described in the present embodiment, as shown in Figure 1, Figure 2, Figure 3 shows, also comprise:
Described aerating device 8 can be selected inflator pump.
As a kind of optional execution mode, transformer vacuum oil, detection system described in the present embodiment, described total valve 6, described vacuum extractor 2 and described aerating device 8 seal connection by tee pipe coupling.
After vacuum oil EO, close exhaust outlet vacuum-pumping valve 3, control valve and vacuum extractor 2, open pneumostome vacuum-pumping valve 4 and total valve 6, because aerating device 8 is communicated with total valve 6 sealings by tee pipe coupling, therefore, open aerating device 8, by total valve 6 and pneumostome vacuum-pumping valve 4, can add air pressure to bellows 12 inner chambers, make bellows 12 external and internal pressures uneven, outwards stretch, and then transformer is pressurizeed.General aerating is depressed into after 0.035pa, closes total valve 6, stops inflation.Keep 12 hours, if ne-leakage and abnormal illustrates that pressure-bearing leak test is qualified.Therefore, the present embodiment provides that a kind of collection vacuumizes, injection flow regulates and pressure-bearing leak test is detected on transformer vacuum oil, the detection system of one, has reduced dismantlement work amount, has improved operating efficiency.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction 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 also giving all execution modes.And among the protection range that the apparent variation of being extended out thus or change are still created in the utility model.
Claims (8)
1. transformer 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) is communicated with described vacuum extractor (2) sealing by the first tube connector (3a); It is upper that exhaust outlet vacuum-pumping valve (3) is arranged at described the first tube connector (3a), by the chamber between oil conservator shell (11) described in the open and close controlling of described exhaust outlet vacuum-pumping valve (3) and described bellows (12) with whether being communicated with between described vacuum extractor (2);
Described pneumostome (14) is communicated with described vacuum extractor (2) sealing by the second tube connector (4a); It is upper that pneumostome vacuum-pumping valve (4) is arranged at described the second tube connector (4a), and whether the inner chamber by bellows (12) described in the open and close controlling of described pneumostome vacuum-pumping valve (4) is with being communicated with between described vacuum extractor (2);
Described pneumostome (14) and/or described exhaust outlet (13) be one end of external control valve also, 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).
2. transformer vacuum oil according to claim 1, detection system, is characterized in that:
Described control valve comprises the first control valve (5a) and/or the second control valve (5b);
One end of described the first control valve (5a) is communicated with described pneumostome (14), whether the other end and the air communication of described the first control valve (5a), be communicated with air by pneumostome (14) described in the open and close controlling of described the first control valve (5a);
One end of described the second control valve (5b) is communicated with described exhaust outlet (13), whether the other end and the air communication of described the second control valve (5b), be communicated with air by exhaust outlet (13) described in the open and close controlling of described the second control valve (5b).
3. transformer vacuum oil according to claim 2, detection system, is characterized in that:
One end that one end of described pneumostome (14), described the second tube connector (4a) and described the first control valve (5a) seals connection and/or described exhaust outlet (13), described the first tube connector (3a) and described the second control valve (5b) by tee pipe coupling seals connection by tee pipe coupling.
4. transformer vacuum oil according to claim 3, detection system, is characterized in that, also comprises:
Total valve (6), its one end is communicated with described vacuum extractor (2) sealing, whether the other end is communicated with the sealing of described exhaust outlet vacuum-pumping valve (3) and described pneumostome vacuum-pumping valve (4) respectively, by between exhaust outlet vacuum-pumping valve (3) described in the open and close controlling of described total valve (6) and described pneumostome vacuum-pumping valve (4) and described vacuum extractor (2), be communicated with.
5. transformer vacuum oil according to claim 4, detection system, is characterized in that, also comprises:
Pressure vacuum meter (7), is communicated with described exhaust outlet vacuum-pumping valve (3), described pneumostome vacuum-pumping valve (4) and described total valve (6) sealing by four-way pipe fitting.
6. transformer vacuum oil according to claim 5, detection system, is characterized in that:
Described the first tube connector (3a) is selected transparent steel wire tube.
7. according to claim 1-6 arbitrary described transformer vacuum oil, detection system, it is characterized in that, also comprise:
Aerating device (8), is communicated with described total valve (6) sealing.
8. transformer 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) seal connection by tee pipe coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320724671.3U CN203444919U (en) | 2013-11-15 | 2013-11-15 | Vacuum oiling and detecting system for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320724671.3U CN203444919U (en) | 2013-11-15 | 2013-11-15 | Vacuum oiling and detecting system for transformer |
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| Publication Number | Publication Date |
|---|---|
| CN203444919U true CN203444919U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320724671.3U Withdrawn - After Issue CN203444919U (en) | 2013-11-15 | 2013-11-15 | Vacuum oiling and detecting system for transformer |
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| Country | Link |
|---|---|
| CN (1) | CN203444919U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680829A (en) * | 2013-11-15 | 2014-03-26 | 国网山东省电力公司青岛供电公司 | Vacuum oil filling and detecting system for transformer |
| CN104215409A (en) * | 2014-09-10 | 2014-12-17 | 国家电网公司 | Transformer bushing sealing condition monitoring method |
| CN104632980A (en) * | 2014-12-31 | 2015-05-20 | 江苏宏丰奥凯机电有限公司 | Full-automatic silicone oil damper oiling machine with sealing leak detection function |
-
2013
- 2013-11-15 CN CN201320724671.3U patent/CN203444919U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680829A (en) * | 2013-11-15 | 2014-03-26 | 国网山东省电力公司青岛供电公司 | Vacuum oil filling and detecting system for transformer |
| CN103680829B (en) * | 2013-11-15 | 2015-12-16 | 国网山东省电力公司青岛供电公司 | Transformer vacuum oil, detection system |
| CN104215409A (en) * | 2014-09-10 | 2014-12-17 | 国家电网公司 | Transformer bushing sealing condition monitoring method |
| CN104632980A (en) * | 2014-12-31 | 2015-05-20 | 江苏宏丰奥凯机电有限公司 | Full-automatic silicone oil damper oiling machine with sealing leak detection function |
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Granted publication date: 20140219 Effective date of abandoning: 20151216 |
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