CN207423904U - Transformer oil monitors pretreatment unit on-line - Google Patents
Transformer oil monitors pretreatment unit on-line Download PDFInfo
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- CN207423904U CN207423904U CN201721439272.7U CN201721439272U CN207423904U CN 207423904 U CN207423904 U CN 207423904U CN 201721439272 U CN201721439272 U CN 201721439272U CN 207423904 U CN207423904 U CN 207423904U
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Abstract
The utility model discloses a kind of transformer oil to monitor pretreatment unit on-line,Including a dehydrating unit,At least two adsorption and regeneration devices,Time schedule controller,Transformer oil detects sample input dehydrating unit,The output terminal of dehydrating unit is connected by sample input port of the multiple-way valve respectively with the multiple adsorption and regeneration device,The sample delivery outlet of multiple adsorption and regeneration devices connects transformer oil on-line chromatograph device by multiple-way valve,Purge gas pipeline connects the gas input port of adsorption and regeneration device by pneumatic operated valve,The gas input port of each adsorption and regeneration device corresponds to a pneumatic operated valve,The time schedule controller connects the multiple-way valve and pneumatic operated valve,According to the timing control multiple-way valve and pneumatic operated valve of setting,Switch the oil sample input port of different adsorption and regeneration devices and the break-make of oil sample delivery outlet by multiple-way valve,Pass through the break-make in pneumatic Vavle switching purge gas tube road.The present invention has many advantages, such as high-recovery, low cost, puts into less, is pollution-free.
Description
Technical field
Power automation monitoring technology field belonging to the present invention monitors molten in transformer oil in real time for online oil chromatography
Pretreatment during gas component is solved, realizes the elimination that the effectively impurity such as mechanical greasy filth are carried out to detecting sample in transformer oil,
For the pretreatment unit of online gc, system and preprocess method.
Background technology
Transformer is inevitably mixed into air during manufacture, transport, installation and operation, causes insulation gradually old
Change and decompose.With the development of failure, bubble that the gas that decomposites is formed is constantly molten in the convection current of transformer oil back warp, diffusion
Solution is in the oil.When gas production be more than meltage when, can also some gas enter gas relay.Due to the group of failure gas
There is substantial connection into the type with content and failure and the seriousness of failure, so periodic analysis is dissolved in the gas in transformer oil
Body can just find Hidden fault existing for inside transformer early, and grasp the development of failure at any time.
Gases Dissolved in Transformer Oil on-line chromatograph technology can be to oil dissolved gas hydrogen (H2), carbon monoxide
(CO), the gases such as methane (CH4), ethane (C2H2), ethylene (C2H4), acetylene (C2H6), carbon dioxide (CO2) and total hydrocarbon carry out
Monitoring, can qualitative and quantitative detection Gases Dissolved in Transformer Oil, be to judge the potential operation troubles of inside transformer, prison both at home and abroad
It superintends and directs with ensureing one of the important means of equipment safety operation.
During transformer dissolved gas on-line analysis, it is one of important step to take out gas from oil.But oil product exists
It is unavoidably contacted during long-time service with oxygen, causes oil product aging and generate acidic materials or greasy filth, acidic materials meeting
Mechanical greasy filth is generated to the metallic material corrosions such as copper used, iron in equipment, the impurity such as mechanical greasy filth of formation are carrying out transformation
In device oil dissolved gas on-line checking Oil-gas Separation unit, line clogging can be caused, accelerates the aging of the materials such as separating film,
The effect of Oil-gas Separation is seriously affected, causes the information analysis of oil sample gas component inaccurate, ultimately results in breaking one's promise for failure judgement.
The content of the invention
For problems of the prior art, the technical problem to be solved by the present invention is to：Gases Dissolved in Transformer Oil
There are the impurity such as mechanical greasy filth during on-line monitoring, in oil sample, it is necessary to be pre-processed to detection oil sample, it is miscellaneous to eliminate mechanical greasy filth etc.
The interference of confrontation detection result.
In order to realize foregoing invention purpose, the technical scheme is that：A kind of transformer oil on-line monitoring pretreatment dress
Put, for transformer online oil monitoring device, pretreatment unit include a dehydrating unit, at least two adsorption and regeneration devices,
Time schedule controller, each adsorption and regeneration device are equipped with oil sample input port, gas input port, oil sample delivery outlet and gas delivery port,
The oil sample input dehydrating unit of transformer oil detection, the output terminal of dehydrating unit are adsorbed again by multiple-way valve with the multiple respectively
The sample input port connection of generating apparatus, the sample delivery outlet of multiple adsorption and regeneration devices are online by multiple-way valve connection transformer oil
Chromatogram arrangement, purge gas pipeline connect the gas input port of adsorption and regeneration device, each adsorption and regeneration device by pneumatic operated valve
Gas input port correspond to a pneumatic operated valve, the time schedule controller connects the multiple-way valve and pneumatic operated valve, according to setting when
Sequence controls multiple-way valve and pneumatic operated valve, switches the oil sample input port of different adsorption and regeneration devices and oil sample delivery outlet by multiple-way valve
Break-make passes through the break-make in pneumatic Vavle switching purge gas tube road.
Pretreatment unit further includes counter sample device, and counter sample device includes triple valve and return line, multiple absorption regeneration dresses
The oil sample put is exported after on-line chromatograph detects, and inputs a triple valve, the remaining two-way of triple valve, all the way output to collection
Tank is exported all the way to return line；The return line includes：Transformer oil tank or straight is back to by surge tank, metering pump
It connected safety-valve and is back to transformer oil tank.
Adsorption and regeneration device outer cladding thermal insulation material, thermal insulation material are outside utilidor, are tracing steam in pipeline；Absorption
Regenerating unit internal structure is：Double layer of metal filter screen, metal filtration are equipped between sample and the input/output port of purge gas
It is magnetic variole granulosa between net, potent polar molecule adsorbent, potent polar molecule adsorbent is between two layers of magnetic variole granulosa；
Adsorption and regeneration device gas delivery port connects solenoid valve.
Further, when covering transformer oil device, every suit transformer oil device corresponds to a set of pretreatment unit, cover more more
Pretreatment unit common drive oil sample pipeline, purge gas pipeline, heating unit and time schedule controller form pretreatment system.
The preprocess method of above-mentioned transformer oil on-line monitoring pretreatment unit is：The processing bag of adsorption and regeneration device
It includes：The impurity such as the mechanical greasy filth in sample are detected to transformer oil with potent polar molecule adsorbent to adsorb, are made with nitrogen
For purge gas and be aided with heating the potent polar molecule adsorbent after absorption is purged, potent polar molecule will be attached to
The impurities purgings such as the mechanical greasy filth of adsorbent come out；Time schedule controller controls absorption regeneration by controlling multiple-way valve and pneumatic operated valve
Working state of device：
Oil sample processing：Multiple-way valve is controlled, adsorption and regeneration device is selected to be passed through the detection sample of transformer oil tank, absorption regeneration
Device adsorbs the impurity such as the mechanical greasy filth in the detection oil sample of input；
Nitrogen purges：The output of multiple-way valve is controlled, disconnects detection conveying of the oil sample to adsorption and regeneration device of transformer oil,
The purge gas pipeline of pneumatic operated valve connection simultaneously, and start heating unit, purging, heating will be attached to potent polar molecule adsorbent
The impurities purgings such as mechanical greasy filth come out；
The sample treatment and heating, purging working condition carry out in turn between different adsorption and regeneration devices.
Switch the working condition of adsorption and regeneration device when time schedule controller every 24 is small.
Unavoidably contacted with oxygen during transformer oil long-time service, cause oil product aging and generate acidic materials or
Greasy filth, acidic materials can generate mechanical greasy filth to the metallic material corrosions such as copper used, iron in equipment, should not chemically remove
It goes, optimal selection is using physisorphtion, and after being screened in plurality of catalyst, the present invention selects potent polarity point
Sub- adsorbent.In pretreatment unit, mechanical greasy filth in potent polar molecule adsorbent effect mainly removing oil sample etc. is miscellaneous
Matter ensures the quality of oil sample, that is, improves the degree of purity of detection sample, it is ensured that the effect of Oil-gas Separation ensures on-line checking
Accuracy.After potent polar molecule adsorbent has adsorbed the impurity such as a certain amount of mechanical greasy filth, can reach saturation without into
One step absorbs, and time schedule controller changes its working condition at this time, is passed through nitrogen and is aided with heating and carries out purging work, will be attached to
The impurities purgings such as the mechanical greasy filth on potent polar molecule adsorbent come out.By purged potent polar molecule adsorbent again
The activity of the impurity such as the mechanical greasy filth of absorption is obtained, into the absorption phase of the impurity such as the mechanical greasy filth of next circulation.
The present invention is realized effectively is eliminated work to the impurity such as mechanical greasy filth in transformer oil, for accurate detection transformation
Device oil dissolved gas component is paved the way, while apparatus of the present invention are inhaled in turn using at least two adsorption and regeneration devices
Echoing purge so that entire preprocessing process can continue uninterruptedly to carry out from the influence of adsorbent equipment degree of saturation,
Realize regeneration effect；Counter sample device ensure that detection sample does not generate pollution to the external world；The present invention have high-recovery, it is low into
Originally, few the advantages that putting into, is pollution-free, it is contemplated that impurity and the counter sample such as mechanical greasy filth of collection, dehumidifying, removal of live oil sample
Overall process.Present invention can apply to different field, such as electric power, petrochemical industry, metallurgy, mining industry steel-making, the adaptation to user demand
Property is strong, and with obvious effects, stability is good.
Description of the drawings
Fig. 1 is the structure diagram of a specific embodiment of the invention.
Fig. 2 is the adsorption and regeneration device schematic internal view of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, below in conjunction with preferred embodiment, to foundation
Specific embodiment provided by the invention, feature and its effect are described in detail, hereafter appropriate for simple clearly purpose
The description of known technology is omitted in order to avoid those unnecessary details influence descriptions to the technical program.
Such as Fig. 1, in the present embodiment, transformer oil on-line monitoring pretreatment unit is right using two adsorption and regeneration devices
The multiple-way valve answered is triple valve.Pretreatment unit includes a dehydrating unit 1, two adsorption and regeneration devices 2,3, purge gas tube
Road 101 and time schedule controller, each adsorption and regeneration device are equipped with sample input port, gas input port, sample delivery outlet and gas
Delivery outlet, transformer detection oil sample input dehydrating unit 1, the output terminal of dehydrating unit 1 by triple valve 5 respectively with it is described two
The sample input port connection of adsorption and regeneration device, the oil sample delivery outlet of two adsorption and regeneration devices are connected online by triple valve 6
The injection port of chromatograph 7, purge gas pipeline 101 connects the gas input port of adsorption and regeneration device by pneumatic operated valve 8, each to inhale
One pneumatic operated valve of correspondence of attached regenerating unit, the time schedule controller connect the triple valve and pneumatic operated valve, according to setting when
Sequence controls triple valve and pneumatic operated valve, passes through the oil sample input port of threeway Vavle switching difference adsorption and regeneration device and oil sample delivery outlet
Break-make passes through the break-make in pneumatic Vavle switching purge gas tube road and adsorption and regeneration device oil sample input port.
Pretreatment unit further includes counter sample device, and counter sample device includes a triple valve 11 and return line, and multiple absorption are again
The oil sample of generating apparatus is exported after online gc detects, and inputs triple valve 11, and the remaining two-way of triple valve 11 exports all the way
To collecting tank；It is exported all the way to return line, the return line includes：Transformation is back to by surge tank 12, metering pump 14
Device oil tank is directly back to transformer oil tank by safety-valve 13.After detecting the detection in real time of oil sample progress online gc,
Since chromatography on-line checking carries out when the original composition of sample and molecule composition is not destroyed, can will carry out
Sample after complete chromatography on-line checking is back to original device by triple valve, return line device.The effect of surge tank 12 is sample
In the aggregation apparatus being detected before carrying out counter sample later, start counter sample after sample reaches certain amount, and utilize meter
Amount pump 14 carries out metrological operation, is slowly back in former transformer oil tank arrangement, and counter sample point here needs to select pressure smaller
Click-through traveling sample, ensure safety, if the too fast pressure of sample flow rate is excessive after sample detecting, oil sample can before entering back into surge tank
Directly to carry out counter sample by safety-valve 13.
Adsorption and regeneration device diameter 150mm of the present invention, height：250mm is blown since temperature is higher in nitrogen purge
It is better to sweep effect, you can preferably to recover the activity of the impurity such as the mechanical greasy filth of the absorption of potent polar molecule adsorbent, preferably
Adsorption and regeneration device outer cladding thermal insulation material, thermal insulation material are outside utilidor, are tracing steam in pipeline, companion in utilidor
Hot steam is opened in nitrogen is purged under normal conditions.Such as Fig. 2, the structure inside adsorption and regeneration device is：Sample and
Double layer of metal filter screen is equipped between the input/output port of purge gas, is magnetic variole granulosa, potent pole between metal filter screen
Property molecular adsorbent, potent polar molecule adsorbent is between two layers of magnetic variole granulosa；Adsorption and regeneration device gas delivery port connects
Connect solenoid valve.
Detection oil sample from desiccant canister outflow the selection through triple valve enter in adsorption and regeneration device, detection oil sample pass through with it is strong
It imitates polar molecule adsorbent and carries out physical reactions, the impurity such as mechanical greasy filth in sample have stayed in potent polar molecule adsorbent
In, other oil samples are entered in next process.In next sequential, nitrogen enters adsorption and regeneration device by pneumatic operated valve, to
Potent polar molecule adsorbent through completing to depart from the impurity such as mechanical greasy filth in oil sample is purged.After purging, potent pole
Property molecular adsorbent recovers the activity of its original again, enters next one cycling.So in recycling adsorption and regeneration device
Potent polar molecule adsorbent.
Purge gas pipeline is equipped with check-valves 9,10 at the gas input port of adsorption and regeneration device；Purge gas pipeline with
And circulation duct pipe thickness of the sample in pretreatment unit is 2mm, pipe interior diameter is 4mm, and pipeline is stainless steel material.
Type used in check-valves is swing check valve, by check-valves, prevents nitrogen after being passed through because stress problems flow back.It completes once
2 it is small when nitrogen purging work make the ability that potent polar molecule adsorbent regains the impurity such as the mechanical greasy filth of absorption.Nitrogen
The impurity such as mechanical greasy filth are carry to be sent into collecting tank by pipeline.
Further, when covering transformer oil tank arrangement, every suit transformer oil tank arrangement corresponds to a set of pretreatment unit more,
More set pretreatment units share purge gas pipeline and time schedule controller, form pretreatment system.
Valve sequence control in scene of the invention is to carry out timing control completion by PLC controller.Sequential organization is broadly divided into two
A process：Oil sample processing procedure and nitrogen purge：
Sample treatment：The output of multiple-way valve is controlled, adsorption and regeneration device is selected to be passed through the detection oil of transformer oil tank arrangement
Sample, adsorption and regeneration device adsorb the impurity such as the mechanical greasy filth of detection oil sample of input；
Nitrogen purges：The output of multiple-way valve is controlled, disconnects the detection oil sample of transformer oil tank arrangement to adsorption and regeneration device
Conveying, while the gas input port of pneumatic operated valve connection purge gas pipeline and the adsorption and regeneration device, nitrogen will be attached to
The impurities purgings such as the mechanical greasy filth on potent polar molecule adsorbent come out；
The sample treatment and nitrogen purging working condition carry out in turn between different adsorption and regeneration devices.
The present invention is designed at least two adsorption and regeneration devices to each transformer oil tank arrangement, this is because potent polarity
Molecular adsorbent will lose activity after the impurity such as a certain amount of mechanical greasy filth are absorbed, it is impossible to continue to separate the machinery in oil sample
The impurity such as greasy filth are, it is necessary to carry out nitrogen purging.To ensure continuing uninterruptedly for preprocessing process, time schedule controller passes through valve sequence control
System reaches potent polar molecule adsorbent absorption and the switching of nitrogen purging.Sequential is：One adsorption and regeneration device carries out potent
After mechanical greasy filth in polar molecule adsorbent adsorbing separation sample is when impurity 24 are small, another adsorption and regeneration device is switched to.
Specially：When triple valve 5 turns to adsorption and regeneration device 2, the potent polar molecule adsorbent when progress of adsorption and regeneration device 2 24 is small
The mechanical greasy filth in oil sample is separated, while pneumatic operated valve 8 turns to adsorption and regeneration device 3, starts 3 dresses after the buffer time of 10 minutes
Put carry out 2 it is small when nitrogen purging, remaining time close purging.Into next sequential, when triple valve 5 turns to adsorption and regeneration device
When 3, the mechanical greasy filth in potent polar molecule adsorbent separation oil sample when the progress of adsorption and regeneration device 3 24 is small, and meanwhile it is pneumatic
Valve 8 turns to adsorption and regeneration device 2, and nitrogen when beginning adsorption and regeneration device 2 progress 2 is small after the buffer time of 10 minutes is blown
It sweeps, remaining time closes purging.Sequentially enter next cycling.Potent polar molecule adsorbent by one section of run time it
It is usually to replace once or so half a year afterwards, it is necessary to replace.
After the explanation Jing Guo detailed preferred embodiment, geography can be understood for the more well known personage of this technology
Solution on the premise of above-mentioned claim and guiding theory is not departed from, can pass through appropriate variation and modification, equally
It can achieve the effect that pre-process the sample of transformer oil on-line chromatograph detection in real time.
Claims (4)
1. a kind of transformer oil monitors pretreatment unit on-line, it is characterized in that：It includes a dehydrating unit, at least two absorption
Regenerating unit, time schedule controller, each adsorption and regeneration device are gentle equipped with oil sample input port, gas input port, oil sample delivery outlet
Body delivery outlet, transformer oil detection sample input dehydrating unit, the output terminal of dehydrating unit by multiple-way valve respectively with it is described more
The sample input port connection of a adsorption and regeneration device, the sample delivery outlet of multiple adsorption and regeneration devices connect transformation by multiple-way valve
Device oil on-line chromatograph device, purge gas pipeline connects the gas input port of adsorption and regeneration device by pneumatic operated valve, each to adsorb
The gas input port of regenerating unit corresponds to a pneumatic operated valve, and the time schedule controller connects the multiple-way valve and pneumatic operated valve, according to
The timing control multiple-way valve and pneumatic operated valve of setting switch oil sample input port and the oil sample of different adsorption and regeneration devices by multiple-way valve
The break-make of delivery outlet passes through the break-make in pneumatic Vavle switching purge gas tube road.
2. transformer oil according to claim 1 monitors pretreatment unit on-line, it is characterized in that, pretreatment unit also wraps
It includes：
Counter sample device, counter sample device include triple valve and return line, and the oil sample output of multiple adsorption and regeneration devices is by online
After oil chromatography monitoring device, a triple valve is inputted, the remaining two-way of triple valve is exported all the way to collecting tank；Output is extremely returned all the way
Flow tube road, the return line include：Transformer oil tank is back to by surge tank, metering pump or directly passes through safety-valve
It is back to transformer oil tank.
3. transformer oil according to claim 1 or 2 monitors pretreatment unit on-line, it is characterized in that：The absorption regeneration
Device outer cladding thermal insulation material, thermal insulation material are outside utilidor, are tracing steam in pipeline；Adsorption and regeneration device internal structure
For：Double layer of metal filter screen is equipped between sample and the input/output port of purge gas, is magnetic ball particle between metal filter screen
Layer, potent polar molecule adsorbent, potent polar molecule adsorbent is between two layers of magnetic variole granulosa；Adsorption and regeneration device gas
Delivery outlet connects solenoid valve.
4. a kind of transformer oil monitors pretreatment system on-line, it is characterized in that, when covering transformer oil device more, every suit transformer
Oily device corresponds to the transformer oil on-line monitoring pretreatment unit described in one of a set of claims 1 to 3, covers pretreatment unit more
Common drive oil sample pipeline, purge gas pipeline, heating unit and time schedule controller form pretreatment system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721439272.7U CN207423904U (en) | 2017-11-01 | 2017-11-01 | Transformer oil monitors pretreatment unit on-line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721439272.7U CN207423904U (en) | 2017-11-01 | 2017-11-01 | Transformer oil monitors pretreatment unit on-line |
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| Publication Number | Publication Date |
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| CN207423904U true CN207423904U (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721439272.7U Expired - Fee Related CN207423904U (en) | 2017-11-01 | 2017-11-01 | Transformer oil monitors pretreatment unit on-line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948975A (en) * | 2020-07-29 | 2020-11-17 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Transformer oil paper insulation intelligent dewatering system and control method thereof |
| WO2020224666A3 (en) * | 2019-05-05 | 2020-12-30 | 西安热工研究院有限公司 | Regenerative capability evaluation method for industrial lubricant regenerative adsorbent |
-
2017
- 2017-11-01 CN CN201721439272.7U patent/CN207423904U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020224666A3 (en) * | 2019-05-05 | 2020-12-30 | 西安热工研究院有限公司 | Regenerative capability evaluation method for industrial lubricant regenerative adsorbent |
| CN111948975A (en) * | 2020-07-29 | 2020-11-17 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Transformer oil paper insulation intelligent dewatering system and control method thereof |
| CN111948975B (en) * | 2020-07-29 | 2021-07-20 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Intelligent dewatering control method for transformer oiled paper insulation |
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Granted publication date: 20180529 Termination date: 20211101 |