CN107014484A - A kind of Transformer Winding thrust experimental rig - Google Patents
A kind of Transformer Winding thrust experimental rig Download PDFInfo
- Publication number
- CN107014484A CN107014484A CN201710354512.1A CN201710354512A CN107014484A CN 107014484 A CN107014484 A CN 107014484A CN 201710354512 A CN201710354512 A CN 201710354512A CN 107014484 A CN107014484 A CN 107014484A
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- Prior art keywords
- oil
- pressure
- transformer
- hydraulic jack
- oil pump
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a kind of Transformer Winding thrust experimental rig, it is related to Transformer's Condition Monitoring technical field, carry out needing power failure to hang cover when Transformer Winding thrust vibrates the research of relation with casing for prior art, the thrust of winding is adjusted by the nail pressing on manual adjustment folder or by hydraulic jack again, cause fastening unreliable and devote a tremendous amount of time, manpower, material resources and financial resources, transformer is added simultaneously to make moist the technical problem of risk, using including hydraulic jack, vibrating sensor, high-pressure oil pipe and electric oil pump, hydraulic jack is in the middle of folder and pressing plate, vibrating sensor is fixed on transformer tank external surface, electric oil pump is pressed by high-pressure oil pipe to hydraulic jack, the present invention is ingenious in design, it is rationally distributed, it is with low cost, it is easy to use, cover can not hung, operating Transformer Winding thrust is carried out continuously in the case of not oil extraction, accurately adjust, it is easy to intuitively carry out transformer thrust vibration Characteristics.
Description
Technical field
The present invention relates to Transformer's Condition Monitoring technical field, more particularly to a kind of Transformer Winding thrust experiment dress
Put.
Background technology
Power transformer is one of most important equipment in power plant and transformer station, and its safety has to power network, social stability
Important influence.When short circuit accident occurs for transformer, the axial force suffered by winding is very big.But winding is not held in itself
By the ability of axial force, complete outer power（The clamping force and axial pressing force of folder）To ensure, thrust reduces, and winding fluffs
Dynamic, its short-circuit strength just cannot be guaranteed.Therefore, the axial pressing force situation for winding being understood in time just seems extremely important, and
Winding thrust situation is reflected by the vibrational energy of the casing during transformer station high-voltage side bus.
At present, the research that Transformer Winding thrust vibrates relation with casing is carried out, method is to have a power failure to hang after cover, or is passed through
Nail pressing on manual adjustment folder, or adjust by hydraulic jack the thrust of winding, for the former, the pressure of each phase winding
Clamp force is general all at tens tons, depends merely on manpower and screws up with a wrench and unreliable, one is limited personnel, exerts oneself and does not reach requirement；Two
It is that screw manufacture has error, it is possible to which the screw thread of nail pressing screw thread and nut coordinates tighter, even if manpower has taken very when twisting nail pressing
Great strength, but actually nail pressing not compactor body winding, for the latter, need also exist for manual adjustment folder after hydraulic jack regulation
Nail pressing on part, causes thrust to fall after rise.And both approaches are required to power failure and hang regulation after cover, do not simply fail to realize continuously
Regulation, and devote a tremendous amount of time, human and material resources and financial resources, while adding the risk that transformer makes moist.
The content of the invention
The invention provides a kind of Transformer Winding thrust experimental rig, transformation is carried out for solving prior art
Device winding thrust and casing need power failure to hang after cover when vibrating the research of relation, then by the nail pressing on manual adjustment folder or
The thrust of winding is adjusted by hydraulic jack, causes fastening unreliable and devotes a tremendous amount of time, human and material resources and wealth
Power, makes moist the technical problem of risk while adding transformer.
To solve the above problems, the present invention is adopted the following technical scheme that：
A kind of Transformer Winding thrust experimental rig, including hydraulic jack, vibrating sensor, high-pressure oil pipe and electric oil pump,
The hydraulic jack be arranged on transformer folder above, the mounting plane of hydraulic jack it is parallel with the pressing plate plane of transformer and
60 degree of interval distribution, the vibrating sensor is arranged on transformer-cabinet outer wall, and the high-pressure oil pipe is arranged on transformer-cabinet
Inside, the hydraulic jack is connected by note/oil discharging valve of the high-pressure oil pipe and transformer, and the electric oil pump is arranged on
Outside transformer-cabinet, electric oil pump is connected with note/oil discharging valve.
Preferably, the hydraulic jack includes cylinder body and piston rod, and the cylinder body is inverted and is installed in above the folder, institute
Point to the pressing plate in the top for stating piston rod.
Preferably, the maximum working pressure (MWP) of the hydraulic jack is 14MPa, and stroke is 30mm.
Preferably, the vibrating sensor is acceleration transducer of the frequency in 0 ~ 1500Hz.
Preferably, the high-pressure oil pipe is made up of polytetrafluoroethylene (PTFE), for connecting the cylinder body and the note/fuel outlet valve
Door, the high-pressure oil pipe is fixed on the folder.
Preferably, the electric oil pump includes motor, oil pump, magnetic valve, pressure gauge, controller and oil tank, the electricity
Motivation is connected with oil pump, and the oil inlet of oil pump is connected with oil tank, and the oil-out of oil pump is connected with magnetic valve, magnetic valve and pressure gauge
Connection, pressure gauge is connected with note/oil discharging valve；Motor is used to drive oil pump to make the hydraulic oil in oil tank pass through oil pump, electromagnetism
Valve, pressure gauge, note/oil discharging valve and high-pressure oil pipe are to hydraulic jack fuel feeding or oil suction, so as to realize that the top of piston rod is close
Or away from pressing plate, magnetic valve is used for the pipeline for cutting off or opening high-pressure oil pipe, and pressure gauge is digital pressure gauge, for showing height
The actual pressure value of pressuring oil pipe, controller connection pressure gauge, motor and magnetic valve, for setting the target pressure in high-pressure oil pipe
Force value, and after being compared with manometric actual pressure value, control the start and stop and rotating and the opening and closing of magnetic valve of motor, make
Manometric actual pressure value is equal to the target pressure value set in controller.
Compared with prior art, the beneficial effects of the invention are as follows：
1. the present invention is ingenious in design, rationally distributed, with low cost, easy to use；
2. operating Transformer Winding thrust can be carried out continuously, accurately in the case of cover, not oil extraction is not hung
Regulation；
3. it is easy to intuitively carry out transformer thrust-vibration Characteristics.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, being used required in being described below to embodiment
Accompanying drawing be briefly described.
Fig. 1 is structural representation of the invention；
Fig. 2 is the side view of winding and iron core；
Fig. 3 is the top view of winding and iron core.
Wherein, it is labeled as shown in figure：1：Transformer-cabinet；2：Winding；3：Pressing plate；4：Iron core；5：Sleeve pipe；6：Hydraulic oil
Cylinder；7：Folder；8：Vibrating sensor；9：High-pressure oil pipe；10：Electric oil pump；11：Upper section casing；12：Lower box body；13：Note/
Oil discharging valve；14：Vent valve；21：High pressure winding；22：Low pressure winding；51：Bushing；52：Low-tension bushing；61：Cylinder body；
62：Piston rod；101：Motor；102：Oil pump；103：Magnetic valve；104：Pressure gauge；105：Controller；106：Oil tank.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described.Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
In the description of the invention, it is necessary to illustrate, the orientation or position relationship of the instruction such as term " interior " are based on attached
Orientation or position relationship shown in figure, or the orientation usually put when using of the invention product or position relationship, be only for
It is easy to the description present invention and simplifies description, rather than indicates or imply that signified device or element there must be specific side
Position, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" connection " etc. should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can be with
It is mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can be two
The connection of individual element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in this hair
Concrete meaning in bright.
It refer to Fig. 1, Fig. 2 and Fig. 3, a kind of Transformer Winding thrust experimental rig, including transformer-cabinet 1, winding
2nd, pressing plate 3, iron core 4, sleeve pipe 5, hydraulic jack 6, folder 7 and vibrating sensor 8.Transformer-cabinet 1 include it is upper section casing 11, under
Save casing 12, note/oil discharging valve 13 and vent valve 14.Winding 2 is set on iron core 4, and iron core 4 uses 0.35-0.5mm silicon steel sheets
It is overrided to form, is compressed by core through screw rod or drawstring colligation, winding 2 includes high pressure winding 21 and low pressure winding 22, low pressure winding
22 close to iron core 4, and high pressure winding 21 is in the outer layer of low pressure winding 22, and pressing plate 3 is arranged on the top of winding 2, and pressing plate 3 is annular electricity
Work laminated wood, folder 7 is arranged on the both sides of iron core 4, and the maximum working pressure (MWP) of hydraulic jack 6 is 14MPa, and stroke is 30mm,
It is arranged on every 60 degree on folder 7, and mounting plane is parallel with pressing plate plane, hydraulic jack 6 includes cylinder body 61 and piston rod 62, cylinder
Body 61 is inverted and is installed on folder 7, and pressing plate 3 is pointed at the top of piston rod 62, and high-pressure oil pipe 9 is made up of polytetrafluoroethylene (PTFE), along
Folder 7 is fixed, and connects cylinder body 61 and note/oil discharging valve 13, and iron core 4 is arranged on the bottom of transformer-cabinet 1, i.e. lower box body 12
Bottom, upper section casing 11 and lower box body 12 are connected by bolt and rubber seal, and sleeve pipe 5 is arranged on outside transformer-cabinet 1
Portion, sleeve pipe 5 includes bushing 51 and low-tension bushing 52, and bushing 51 is connected with high pressure winding 21, low-tension bushing 52 with it is low
Pressure winding 22 is connected, and the injection transformer of note/oil discharging valve 13 oil of the bottom of transformer-cabinet 1 is fixed on by one end, until
Whole transformer-cabinet 1 is filled, and one side oiling, while being deflated by vent valve 14, vibrating sensor 8 is arranged on transformer
On the outer wall of casing 1, vibrating sensor 8 is acceleration transducer of the frequency in 0 ~ 1500Hz.
Electric oil pump 10 is outside transformer-cabinet 1, including motor 101, oil pump 102, magnetic valve 103, pressure gauge
104th, controller 105 and oil tank 106, motor 101 are connected with oil pump 102, and the oil inlet of oil pump 102 is connected with oil tank 106, oil
The oil-out of pump 102 is connected with magnetic valve 103, and magnetic valve 103 is connected with pressure gauge 104, pressure gauge 104 and note/oil discharging valve
13 connections.Motor 101 is used to drive oil pump 102 to make the hydraulic oil in oil tank 106 pass through oil pump 102, magnetic valve 103, pressure
Table 104, note/oil discharging valve 13 and high-pressure oil pipe 9 are to the fuel feeding of hydraulic jack 6 or oil suction, so as to realize that the top of piston rod 62 is leaned on
Close or remote from pressing plate 3, magnetic valve 103 is used for the pipeline for cutting off or opening high-pressure oil pipe 9, and pressure gauge 104 is digital pressure gauge,
Actual pressure value for showing high-pressure oil pipe 9, the connection of controller 105 pressure gauge 104, motor 101 and magnetic valve 103, is used
Target pressure value in setting high-pressure oil pipe 9, and after being compared with the actual pressure value of pressure gauge 104, control motor 101
Start and stop and rotating and the opening and closing of magnetic valve 103, make the actual pressure value of pressure gauge 104 be equal to what is set in controller 105
Target pressure value.
When carrying out vibration-testing, the set target pressure value first in controller 105, if target pressure value is less than pressure gauge
104 actual pressure value, the control magnetic valve 103 of controller 105 is opened, and is then connected the power supply of motor 101 and is controlled it to rotate forward,
Now motor 101 drives oil pump 102 to suck the hydraulic oil in oil tank 106 and be transported to hydraulic jack 6 via high-pressure oil pipe 9
Cylinder body 61, and then promote piston rod 62 moved to pressing plate 3, contact the pusher dynamic pressure plate 3 of pressing plate 3 move downward so that realize around
The compression of group 2, when the actual pressure value of pressure gauge 104 reaches target pressure value, the control magnetic valve 103 of controller 105 is closed
And the power supply of motor 101 is cut off, so as to realize that piston rod 62 is static.Apply voltage in sleeve pipe 5, can by vibrating sensor 8
To observe the vibration acceleration value of corresponding transformer-cabinet 1 under target pressure value.
If target pressure value is more than the actual pressure value of pressure gauge 104, the control magnetic valve 103 of controller 105 is opened, and is connect
The power supply of energization motivation 101 simultaneously controls it to invert, now motor 101 drive oil pump 102 by the hydraulic oil in hydraulic jack 6 via
In the suction oil tank 106 of high-pressure oil pipe 9, now piston rod 62 shrinks and away from pressing plate 3, until the actual pressure value of pressure gauge 104
Equal with target pressure value, the control magnetic valve 103 of controller 105 closes and shuts off the power supply of motor 101, so as to realize piston
Bar 62 is static.Apply voltage in sleeve pipe 5, corresponding transformer tank under target pressure value can be observed by vibrating sensor 8
The vibration acceleration value of body 1.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should using the scope of the claims as
It is accurate.
Claims (6)
1. a kind of Transformer Winding thrust experimental rig, including hydraulic jack（6）, vibrating sensor（8）, high-pressure oil pipe（9）
And electric oil pump（10）, it is characterised in that：The hydraulic jack（6）Installed in the folder of transformer（7）Above, hydraulic jack
（6）Mounting plane and transformer pressing plate（3）Plane is parallel and 60 degree of interval is distributed, the vibrating sensor（8）It is arranged on
Transformer-cabinet（1）Outer wall, the high-pressure oil pipe（9）It is arranged on transformer-cabinet（1）Inside, the hydraulic jack（6）Pass through
The high-pressure oil pipe（9）With note/oil discharging valve of transformer（13）Connection, the electric oil pump（10）It is arranged on transformer-cabinet
（1）Outside, electric oil pump（10）With note/oil discharging valve（13）Connection.
2. device according to claim 1, it is characterised in that：The hydraulic jack（6）Including cylinder body（61）And piston rod
（62）, the cylinder body（61）Inversion is installed in the folder（7）Above, the piston rod（62）Top point to the pressing plate
（3）.
3. device according to claim 2, it is characterised in that：The hydraulic jack（6）Maximum working pressure (MWP) be
14MPa, stroke is 30mm.
4. device according to claim 1, it is characterised in that：The vibrating sensor（8）It is frequency 0 ~ 1500Hz's
Acceleration transducer.
5. device according to claim 1, it is characterised in that：The high-pressure oil pipe（9）It is made up, is used for of polytetrafluoroethylene (PTFE)
Connect the cylinder body（61）And note/the oil discharging valve（13）, the high-pressure oil pipe（9）It is fixed on the folder（7）On.
6. device according to claim 11, it is characterised in that：The electric oil pump（10）Including motor（101）, oil
Pump（102）, magnetic valve（103）, pressure gauge（104）, controller（105）And oil tank（106）, the motor（101）With oil pump
（102）Connection, oil pump（102）Oil inlet and oil tank（106）Connection, oil pump（102）Oil-out and magnetic valve（103）Even
Connect, magnetic valve（103）With pressure gauge（104）Connection, pressure gauge（104）With note/oil discharging valve（13）Connection；Motor（101）
For driving oil pump（102）Make oil tank（106）In hydraulic oil pass through oil pump（102）, magnetic valve（103）, pressure gauge（104）、
Note/oil discharging valve（13）And high-pressure oil pipe（9）To hydraulic jack（6）Fuel feeding or oil suction, so as to realize piston rod（62）Top
Closer or far from pressing plate（3）, magnetic valve（103）For cutting off or opening high-pressure oil pipe（9）Pipeline, pressure gauge（104）For number
Word formula pressure gauge, for showing high-pressure oil pipe（9）Actual pressure value, controller（105）Connect pressure gauge（104）, motor
（101）And magnetic valve（103）, for setting high-pressure oil pipe（9）In target pressure value, and and pressure gauge（104）Actual pressure
Force value relatively after, control motor（101）Start and stop and rotating and magnetic valve（103）Opening and closing, make pressure gauge（104）'s
Actual pressure value is equal to controller（105）The target pressure value of middle setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710354512.1A CN107014484A (en) | 2017-05-19 | 2017-05-19 | A kind of Transformer Winding thrust experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710354512.1A CN107014484A (en) | 2017-05-19 | 2017-05-19 | A kind of Transformer Winding thrust experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107014484A true CN107014484A (en) | 2017-08-04 |
Family
ID=59450192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710354512.1A Pending CN107014484A (en) | 2017-05-19 | 2017-05-19 | A kind of Transformer Winding thrust experimental rig |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181040A (en) * | 2018-01-16 | 2018-06-19 | 西安交通大学 | A kind of transformer winding compresses force measuring device |
| CN108534933A (en) * | 2018-03-27 | 2018-09-14 | 国网河北省电力有限公司电力科学研究院 | Transformer winding monitoring device |
| CN108760147A (en) * | 2018-06-11 | 2018-11-06 | 中国南方电网有限责任公司超高压输电公司天生桥局 | A kind of pressurization level limiting alarm and its implementation |
| DE102017217530A1 (en) * | 2017-10-02 | 2019-04-04 | Siemens Aktiengesellschaft | Electrical device for connection to a high-voltage network and method for fault detection of a component of the electrical device |
| CN113035561A (en) * | 2020-12-07 | 2021-06-25 | 广西电网有限责任公司电力科学研究院 | Oil pressure measurement-based transformer winding oil flow balance design method |
| CN114323382A (en) * | 2021-12-22 | 2022-04-12 | 广西电网有限责任公司南宁供电局 | Transformer winding compaction force detection system and detection method |
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| CN205229376U (en) * | 2015-12-22 | 2016-05-11 | 国网安徽省电力公司 | Transformer winding modification on -line monitoring device |
| CN205533567U (en) * | 2016-04-13 | 2016-08-31 | 三江瓦力特特种车辆有限公司 | Automatic hydraulic pressure cutting ferrule preloading device of control |
| CN206177487U (en) * | 2016-11-22 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Winding atress adjustable testing transformer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017217530A1 (en) * | 2017-10-02 | 2019-04-04 | Siemens Aktiengesellschaft | Electrical device for connection to a high-voltage network and method for fault detection of a component of the electrical device |
| CN108181040A (en) * | 2018-01-16 | 2018-06-19 | 西安交通大学 | A kind of transformer winding compresses force measuring device |
| CN108534933A (en) * | 2018-03-27 | 2018-09-14 | 国网河北省电力有限公司电力科学研究院 | Transformer winding monitoring device |
| CN108534933B (en) * | 2018-03-27 | 2020-12-08 | 国网河北省电力有限公司电力科学研究院 | Transformer winding monitoring device |
| CN108760147A (en) * | 2018-06-11 | 2018-11-06 | 中国南方电网有限责任公司超高压输电公司天生桥局 | A kind of pressurization level limiting alarm and its implementation |
| CN113035561A (en) * | 2020-12-07 | 2021-06-25 | 广西电网有限责任公司电力科学研究院 | Oil pressure measurement-based transformer winding oil flow balance design method |
| CN114323382A (en) * | 2021-12-22 | 2022-04-12 | 广西电网有限责任公司南宁供电局 | Transformer winding compaction force detection system and detection method |
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Application publication date: 20170804 |
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