CN208672576U - A kind of transformer oil chromatographic on-Line Monitor Device verification system - Google Patents
A kind of transformer oil chromatographic on-Line Monitor Device verification system Download PDFInfo
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- CN208672576U CN208672576U CN201821274357.9U CN201821274357U CN208672576U CN 208672576 U CN208672576 U CN 208672576U CN 201821274357 U CN201821274357 U CN 201821274357U CN 208672576 U CN208672576 U CN 208672576U
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Abstract
The embodiment of the present application discloses a kind of transformer oil chromatographic on-Line Monitor Device verification system, comprising: oil cylinder, circulating pump, gas cylinder and blank oil sample storage container；The inside of the oil cylinder has piston, and the first side of the piston corresponds to the tool for oil cylinder of the oil cylinder, and second side of the piston corresponds to the gas storage cylinder body of the oil cylinder；The tool for oil cylinder is provided with pressure responsive device, and the gas storage cylinder body is provided with gas feed and gas vent, and the gas feed is connect by the first control valve with the gas cylinder, and the gas outlet is provided with the second control valve；The oil cylinder connect to form circulation loop with the circulating pump, and the blank oil sample storage container is connect by third control valve with the circulating pump.System solves the problem the oil cylinder working-pressures of current calibrating instrument not to be able to maintain stabilization, and calibrating is caused the technical issues of error occur.
Description
Technical field
This application involves electrical engineering technical field more particularly to a kind of transformer oil chromatographic on-Line Monitor Device calibrating systems
System.
Background technique
In the transformer of large capacity, it is typically equipped with transformer oil chromatographic on-Line Monitor Device, which can be
Under the operating status of transformer, the insulating oil in transformer is monitored, the various failures of dissolved in insulating oil can be measured
The concentration and variation tendency of characteristic gas.
After longtime running, accuracy can decline transformer oil chromatographic on-Line Monitor Device, influence to insulating oil performance
Evaluation result, it is therefore necessary to periodically it is examined and determine, to correct its accuracy.In general, the calibrating to on-Line Monitor Device
Work can be completed by calibrating instrument, but current calibrating instrument, and the pressure in oil cylinder is not able to maintain stabilization, and oil cylinder pressure
The variation of power will affect the ability of the standard dissolved gas in oil in it, causes calibrating error occur, further affects online prison
Survey the correction result of device.
Utility model content
The embodiment of the present application provides a kind of transformer oil chromatographic on-Line Monitor Device verification system, solves current inspection
The oil cylinder working-pressure for determining instrument is not able to maintain stabilization, and calibrating is caused the technical issues of error occur.
In view of this, this application provides a kind of transformer oil chromatographic on-Line Monitor Device verification system, which includes:
Oil cylinder, circulating pump, gas cylinder and blank oil sample storage container；
The inside of the oil cylinder has piston, and the first side of the piston corresponds to the tool for oil cylinder of the oil cylinder, the work
Second side of plug corresponds to the gas storage cylinder body of the oil cylinder；
The tool for oil cylinder is provided with pressure responsive device, and the gas storage cylinder body is provided with gas feed and gas vent, described
Gas feed is connect by the first control valve with the gas cylinder, and the gas outlet is provided with the second control valve；
The oil cylinder connect to form circulation loop with the circulating pump, and the blank oil sample storage container is controlled by third
Valve is connect with the circulating pump.
Preferably, the oil cylinder has a piston rod of hollow structure, the first end of the piston rod through the piston with
The piston forms one, and second end connect to form circulation loop with the circulating pump.
Preferably, first control valve, second control valve and the third control valve are solenoid valve.
Preferably, the piston rod can drive the piston to be axially moved in the oil cylinder under the drive of the motor.
Preferably, the pressure responsive device is specially pressure controller.
Preferably, the gas cylinder is specially compressed air bottle.
Preferably, the gas feed and the gas vent are connected on the gas storage cylinder body by triple valve.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
Transformer oil chromatographic on-Line Monitor Device verification system provided by the embodiments of the present application, the system use oil cylinder in
Portion has piston, and the tool for oil cylinder part positioned at the first side of piston of oil cylinder is provided with pressure responsive device, positioned at piston second side
Gas storage cylinder part is provided with a gas feed and a gas vent, and gas feed is connected by the first control valve and gas cylinder
It connects, second control valve is arranged in gas outlet.
In verification system work, pressure responsive device can go out the intracorporal pressure of oil storage cylinder with real-time measurement, when the pressure measured
When power is lower than setting value, by opening the first control valve, the compressed gas in gas cylinder can be made to enter gas storage cylinder body, gas storage cylinder body
Interior pressure increases, and the space of piston compression tool for oil cylinder is pushed to be restored to setting value so that the pressure of tool for oil cylinder increases；
When the pressure measured is higher than setting value, then the second control valve can be opened, the intracorporal gas of air reservoir is by piston at this time
Compressing can escape from gas vent, piston then take advantage of a situation toward gas storage cylinder body direction be axially moved so that the sky of tool for oil cylinder
Between increase, the pressure of tool for oil cylinder then reduces, and is restored to setting value.
By the verification system, when examining and determine transformer oil chromatographic on-Line Monitor Device, the pressure in oil cylinder is examined and determine
Power maintains setting value always, in standard oil constant is remained to the solvability of gas, to improve the essence of calibrating
Degree, so that the correction to on-Line Monitor Device is more accurate.
Detailed description of the invention
Fig. 1 is a kind of structural representation of transformer oil chromatographic on-Line Monitor Device verification system provided by the embodiments of the present application
Figure；
Wherein, appended drawing reference is as follows:
1, oil cylinder；11, tool for oil cylinder；12, gas storage cylinder body；13, piston；14, piston rod；2, circulating pump；3, blank oil sample
Storage container；4, gas cylinder；5, the first control valve；6, the second control valve；7, third control valve；8, the 4th control valve.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only this
Apply for a part of the embodiment, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall in the protection scope of this application.
In order to make it easy to understand, referring to Fig. 1, Fig. 1 is that a kind of transformer oil chromatographic provided by the embodiments of the present application is supervised online
Survey the structural schematic diagram of device verification system.
The calibrating of transformer oil chromatographic on-Line Monitor Device usually requires to use standard oil as the benchmark compared, standard oil
Oil cylinder 1 can be used in verification process to be contained, in the embodiment of the present application, the inside of oil cylinder 1 has piston 13, the work
The inside of oil cylinder 1 can be divided into two spaces by plug 13, it should be understood that be that the shape of piston 13 should be transversal with oil cylinder 1
Face matches, for example, piston 13 should also be as matching the cylindrical plate of the inner sidewall of oil cylinder 1 if oil cylinder 1 is cylindrical shape
Shape, and piston 13 should be fitted closely with the medial surface of oil cylinder 1, so as to so as to be reached between the two spaces separated
The effect being isolated to gas-liquid.
The two spaces separated in oil cylinder 1, one can be used for storage standard oil sample, and another can be used for storing
The corresponding part in the first side of piston 13 can be considered tool for oil cylinder 11 for aspect understanding by gas, by corresponding piston 13
The part of second side be considered gas storage cylinder body 12.
The modes of emplacement of oil cylinder 1 can be different according to different situations, but in order to make internal 13 stress of piston more evenly,
Best embodiment is the vertical placement in the embodiment of the present application, in the case where vertical place, the first side of piston 13 with
Second side can be understood as the upper bottom surface and bottom surface of piston 13 accordingly.
Tool for oil cylinder 11 is internally provided with pressure responsive device, and pressure responsive device can measure the internal pressure of tool for oil cylinder 11,
There are many devices that pressure can be induced, such as pressure sensor, pressure tester etc., it is to be understood that actual
System work process, the pressure responsive device can be electrically connected with certain device with control ability, and pressure responsive device can be surveyed
The pressure value measured is sent to control device, and control device then can use the pressure value and be judged accordingly；Certainly, pressure-sensitive
Device itself can also have the ability simply judged the pressure value measured, for example pressure responsive device can be pressure control
Device processed, at this point it is possible to set a preset pressure value, the then pressure value that pressure controller can will measure for pressure controller
It is compared with preset pressure value, and corresponding signal can be issued according to comparison result.
The different location in 11 part of tool for oil cylinder can be set in pressure responsive device according to different requirements, but due to pressure-sensitive
Device is really the measurement to the air pressure in tool for oil cylinder 11, therefore to avoid it from being immersed in standard oil as far as possible, vertical in oil cylinder 1
When placement, best embodiment is the position being disposed at close to the top of oil cylinder 1, such as can be in the oil inlet of oil cylinder 1
Setting near mouthful.
The inside of gas storage cylinder body 12 can be set a gas feed and a gas vent, gas feed can be used for
Gas cylinder 4 connects, and certain gas cylinder 4 should be compressed gas cylinder, so as to which gas is pressed into gas feed when opening gas cylinder 4,
Specifically, gas cylinder 4 can choose compressed air bottle from the point of view of environmental protection and cost, at this point, gas vent can be straight
It connects and is connected with atmosphere, will not be polluted, and when gas cylinder 4 is not compressed air bottle, then gas vent should be returned with corresponding
Receiving apparatus connection.
First control valve 5 can be set between gas feed and gas cylinder 4, gas outlet can be set one second
Control valve 6, by controlling the switch of two control valves, the gas that can be controlled in gas storage cylinder body 12 is flowed out into gas, from
And control the pressure of gas storage cylinder body 12.
Gas feed and gas vent can be two independent mouths, connect after a mouth can also be converged by triple valve
On gas storage cylinder body 12, either two independent mouths or a manifold port, when oil cylinder 1 is placed vertically, in air reservoir
Setting position inside body 12 should be entered as close to the bottom surface of oil cylinder 1 to avoid when piston 13 moves down
The part of tool for oil cylinder 11.
Oil cylinder 1 can with circulating pump 2 formed circulation loop, specifically, oil cylinder 1 should have an oil inlet with one out
Hydraulic fluid port, oil inlet can connect the oil outlet in circulating pump 2, and oil outlet can connect the oil inlet end in circulating pump 2, to be formed
The circulation path of one standard oil controls for convenience, the 4th control valve 8 can be arranged on the circulation path.
It should be noted that the piston 13 in oil cylinder 1 primarily serve a gas-liquid isolation effect, can its first
It passively axially moves in oil cylinder 1 under the action of the pressure difference that side is subject to second side, to balance the pressure of two sides, when
So, piston 13 can also be controlled actively, a piston rod 14 can be arranged for piston 13, can be by piston rod 14 with motor
It is driven, piston rod 14 is driven by motor, piston rod 14 is further driven to piston 13 and is axially moved in oil cylinder 1, specifically
, the connection type between piston rod 14 and motor has very much, for example can use the structure of lead screw, can also utilize gear
Or the modes such as bracing wire, it is not limited thereto.The limitation that the method that the active control of piston 13 is controlled compared to pressure difference is subject to
It is smaller, also the pressure in tool for oil cylinder 11 can more accurately be controlled.
Specifically, the piston rod 14 can be hollow structure, first end through piston 13 and connects into one with piston 13
Body, and due to its hollow structure, access can be formed with tool for oil cylinder 11, second end can pass through the 4th control valve 8
It connecting with circulating pump 2, the second end of piston rod 14 is equivalent to the oil outlet of 11 part of tool for oil cylinder of oil cylinder 1 at this time, thus with
Circulating pump 2 constitute circulating oil path, further, between piston 13 and piston rod 14 formed one, ensure that tool for oil cylinder 11 with
Gas-liquid isolation between gas storage cylinder body 12；Due to the elongate configuration of piston rod 14, suitable size can be set in the bottom of oil cylinder 1
Hole passed through for piston rod 14.
Blank oil sample storage container 3 can be by third control valve 7 and circulating pump 2, specifically, blank oil sample storage container
3 are connect with the oil inlet end of circulating pump 2, so that circulating pump 2 can pump blank oil sample from blank oil sample storage container 3
Enter oil cylinder 1, the setting of third control valve 7 is also beneficial to control oil inlet process.It should be noted that in the present embodiment
Third control valve 7 is arranged between the 4th control valve 8 and blank oil sample storage container 3, and the 4th control valve 8 is equivalent to circulation at this time
The master control valve in circuit and blank oil sample oil inlet access.
The type of control valve also there are many, such as electric expansion valve, electric butterfly valve etc., in the embodiment of the present application, first
Solenoid valve can be used in control valve 5, the second control valve 6, third control valve 7 and the 4th control valve 8.
The above are a kind of the detailed of transformer oil chromatographic on-Line Monitor Device verification system provided by the embodiments of the present application
Illustrate, is introduced below with reference to workflow of the Fig. 1 to the system.
When being examined and determine using verification system, it can be equipped with a control device to system, cooperate pressure controller to control
Valve processed is controlled, and workflow is divided into oil cylinder oiling and the two parts that draw oil sample, specific as follows:
Oil cylinder oiling: after start-up operation, the second control valve 6, third control valve 7 and the 4th control valve 8, which are powered, to be opened, circulation
Pump 2 is powered on, and the blank oil sample in blank oil sample storage container 3 is pumped into oil cylinder 1 through third control valve 7, the 4th control valve 8
11 part of tool for oil cylinder, with the injection of blank oil sample, piston 13 slowly moves downward under gravity, and due to
Two control valves 6 are in the open state, and gas storage cylinder body 12 is actually communicated with the atmosphere, in portion gas be discharged in atmosphere, directly
To oiling volume reach setting value or more than after, the power-off of all control valves is closed, and circulating pump 2 powers off, and completes oiling.
It draws oil sample: when opening sampling valve or oil outlet sampling, sending standard oil sample to transformation by the oil pressure in oil cylinder 1
Device oil chromatography on-line monitoring system, the pressure of 11 part of tool for oil cylinder becomes smaller therewith in oil cylinder 1, when pressure is down to setting value or less
When, pressure controller transmits a signal to control device, and control device can control the energization of the first control valve 5 and open, at this point, pressure
The gas storage cylinder body 12 of compressed air indentation oil cylinder 1 increases the pressure of gas storage cylinder body 12 by contracting air bottle 4, pushes on piston 13
It moves, the space of tool for oil cylinder 11 reduces, and pressure also increases with it；When the pressure of tool for oil cylinder 11 reaches setting value, pressure control
Device processed transmits a signal to control device, and control device controls the power-off of the first control valve 5, guarantees that 1 upper pressure of oil cylinder is permanent with this
It is fixed.
By the verification system, when examining and determine transformer oil chromatographic on-Line Monitor Device, the pressure in oil cylinder begins
Eventually maintain setting value, in standard oil constant is remained to the solvability of gas, to improve the precision of calibrating, make
It obtains more accurate to the correction of on-Line Monitor Device.
The description of the present application and term " first " in above-mentioned attached drawing, " second ", " third ", " the 4th " etc. are (if deposited
) it is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that use in this way
Data are interchangeable under appropriate circumstances, so that embodiments herein described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
It should be appreciated that in this application, " at least one (item) " refers to one or more, and " multiple " refer to two or two
More than a."and/or" indicates may exist three kinds of relationships, for example, " A and/or B " for describing the incidence relation of affiliated partner
It can indicate: only exist A, only exist B and exist simultaneously tri- kinds of situations of A and B, wherein A, B can be odd number or plural number.Word
Symbol "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or"." at least one of following (a) " or its similar expression, refers to
Any combination in these, any combination including individual event (a) or complex item (a).For example, at least one in a, b or c
Item (a), can indicate: a, b, c, " a and b ", " a and c ", " b and c ", or " a and b and c ", and wherein a, b, c can be individually,
It can be multiple.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before
Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of transformer oil chromatographic on-Line Monitor Device verification system characterized by comprising
Oil cylinder, circulating pump, gas cylinder and blank oil sample storage container；
The inside of the oil cylinder has piston, and the first side of the piston corresponds to the tool for oil cylinder of the oil cylinder, the piston
Second side corresponds to the gas storage cylinder body of the oil cylinder；
The tool for oil cylinder is provided with pressure responsive device, and the gas storage cylinder body is provided with gas feed and gas vent, the gas
Import is connect by the first control valve with the gas cylinder, and the gas outlet is provided with the second control valve；
The oil cylinder connect to form circulation loop with the circulating pump, the blank oil sample storage container by third control valve with
The circulating pump connection.
2. system according to claim 1, which is characterized in that the oil cylinder has the piston rod of hollow structure, the work
The first end of stopper rod forms one through the piston and the piston, and second end connect to be formed and be recycled back to the circulating pump
Road.
3. system according to claim 2, which is characterized in that first control valve, second control valve and institute
Stating third control valve is solenoid valve.
4. system according to claim 2, which is characterized in that the piston rod can drive the work under the drive of the motor
Plug is axially moved in the oil cylinder.
5. system according to claim 1, which is characterized in that the pressure responsive device is specially pressure controller.
6. system according to claim 1, which is characterized in that the gas cylinder is specially compressed air bottle.
7. system according to claim 1, which is characterized in that the gas feed and the gas vent pass through triple valve
It is connected on the gas storage cylinder body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821274357.9U CN208672576U (en) | 2018-08-08 | 2018-08-08 | A kind of transformer oil chromatographic on-Line Monitor Device verification system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821274357.9U CN208672576U (en) | 2018-08-08 | 2018-08-08 | A kind of transformer oil chromatographic on-Line Monitor Device verification system |
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| CN208672576U true CN208672576U (en) | 2019-03-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115014868A (en) * | 2022-05-06 | 2022-09-06 | 国网江苏省电力有限公司电力科学研究院 | Single-port oil taking system and method for online monitoring of transformer oil |
| CN115155481A (en) * | 2022-07-27 | 2022-10-11 | 广东电网有限责任公司 | Insulating oil preparation facilities |
-
2018
- 2018-08-08 CN CN201821274357.9U patent/CN208672576U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115014868A (en) * | 2022-05-06 | 2022-09-06 | 国网江苏省电力有限公司电力科学研究院 | Single-port oil taking system and method for online monitoring of transformer oil |
| CN115014868B (en) * | 2022-05-06 | 2023-12-26 | 国网江苏省电力有限公司电力科学研究院 | Single-port oil extraction system and method for online monitoring of transformer oil |
| CN115155481A (en) * | 2022-07-27 | 2022-10-11 | 广东电网有限责任公司 | Insulating oil preparation facilities |
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