CN107167728A - A kind of high voltage isolator control box main-shaft torque calibration sensor and scaling method - Google Patents
A kind of high voltage isolator control box main-shaft torque calibration sensor and scaling method Download PDFInfo
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- CN107167728A CN107167728A CN201710342763.8A CN201710342763A CN107167728A CN 107167728 A CN107167728 A CN 107167728A CN 201710342763 A CN201710342763 A CN 201710342763A CN 107167728 A CN107167728 A CN 107167728A
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- sensor
- calibration
- torque
- control box
- high voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
Abstract
The present invention relates to a kind of high voltage isolator control box main-shaft torque calibration sensor and scaling method, to field calibration to the torque sensor that is arranged on high voltage isolator control box main shaft, described torque sensor includes the full bridge measurement circuit being made up of 4 piezoelectric patches being pasted onto on main shaft, power supply, amplifier and AD converter, the calibration sensor includes the clamp assemblies being sequentially connected, rocking arm and handle, a standard torque sensor is provided between described rocking arm and handle, described clamp assemblies hold main shaft tightly, described standard torque sensor and torque sensor are connected with external detector.Compared with prior art, the present invention has the advantages that suitable for live, objective and accurate.
Description
Technical field
The present invention relates to power supply or the switching device of distribution, more particularly, to a kind of high voltage isolator control box main shaft
Moment of torsion calibration sensor and scaling method.
Background technology
High voltage isolator is one of most equipment of transformer station's consumption, and its fault rate also ranks first.Mainly because
It is directly exposed to undergo in air for outdoor disconnector transmission link and exposes to the sun and rain, usually operating frequency is relatively low, pivot pin, axle
The transmission portion such as hold and lack lubrication and relative motion, therefore it operates the situation of bite more.At present, the shape of high voltage isolator
State detection means relies primarily on infrared, contact resistance, ultrasound and carried out, only the effective monitoring means of mechanical breakdown also neither one.
The mechanical breakdown of disconnecting switch can not be diagnosed early, early processing, the quilt often in " not bad not know, not bad not repair, be broken evening "
Dynamic situation, causes the Frequent Accidents of caused by the mechanical jam faults of disconnecting switch " non-to stop ".
Undergo because existing torque sensor is directly exposed in air installed in outdoor disconnector transmission link
Expose to the sun and rain, it is easy to damage, so obtain main shaft electric signal using piezoelectric patches, then be transformed into the mode of torque value and survey
Amount, but when carrying out torque in-site measurement, the motor drive mechanism main shaft of each high voltage isolator is differed, it is therefore desirable to it is existing
Field is demarcated.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind is applied to scene, visitor
See accurate high voltage isolator control box main-shaft torque calibration sensor and scaling method.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of high voltage isolator control box main-shaft torque calibration sensor, to field calibration to being arranged on high_voltage isolation
Torque sensor on switch operating case main shaft, described torque sensor is included by 4 piezoelectric patches being pasted onto on main shaft groups
Into full bridge measurement circuit, power supply, amplifier and AD converter, the calibration sensor include be sequentially connected clamp assemblies, shake
Arm and handle, are provided with a standard torque sensor, described clamp assemblies hold main shaft tightly, described between described rocking arm and handle
Standard torque sensor and torque sensor be connected with external detector.
Described clamp assemblies include the first fixture block and the second fixture block by the mutual obvolvent of knob, the first described fixture block
Main shaft is held tightly with the second fixture block, and it is anti-skidding by stopping tight bolt.
Described the first fixture block and the second fixture block is U-shaped.
A kind of scaling method of high voltage isolator control box main-shaft torque calibration sensor, comprises the following steps：
1) preparation before demarcating：
11) scene rotates the divide-shut brake action of the divide-shut brake crank progress disconnecting switch of high voltage isolator control box, choosing
The minimum position of operating physical force during divide-shut brake is scheduled on to be demarcated；
12) calibration sensor is clipped at the top 50mm of main shaft sensor；
13) torque sensor and the signal wire of calibration sensor are connected with detector respectively；
2) field calibration：
21) fixed calibration sensor handle, to prevent main axis；
22) operation divide-shut brake crank carries out divide-shut brake action, makes moment of torsion reading >=10N.m of calibration sensor.
23) calibration is calculated, and reads the output valve M of calibration sensor and torque sensor0And M, obtain scaling parameter a；
24) after acquisition scaling parameter a is obtained, it is multiplied by scaling parameter a according to the number of degrees of torsion moment on the scene sensor and produces reality
The main-shaft torque on border.
Described step 23) in, scaling parameter a calculating formula is：
A=M0/M。
Compared with prior art, the present invention has advantages below：
At present both at home and abroad to the effective monitoring means of high voltage isolator mechanical breakdown neither one, product can only be relied on existing
Quality and antiseptic property and field personnel's subjective experience and technical capability, it is impossible to promptly and accurately judge potential machinery event
Barrier, often the but operation failure because of mechanical breakdown when in use, has a strong impact on power supply reliability and electric power netting safe running.The device
Realization is monitored automatically to disconnecting switch mechanical performance, as long as there is breaking-closing operating, just there is data feedback, being capable of objective, standard
Really, disconnecting switch running status is controlled in time, potential faults extremely can be early found by expert diagnostic system.Not only improve
The repair based on condition of component level of disconnecting switch, also improves electric power netting safe running level.
Brief description of the drawings
Fig. 1 is live torque measurement principle schematic.
Fig. 2 is calibration sensor structural representation.
Fig. 3 is the structural representation of the first fixture block.
Fig. 4 is the structural representation of the second fixture block.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
For there is no the present situation of automatic checkout equipment to high voltage isolator mechanical performance at present, the special torsion by developing
The sensors such as square, angle, to disconnecting switch load torque, this important parameter is measured, and moment of torsion is drawn out automatically and is turned with main shaft
Dynamic angular relationship curve, and the difference of this equipment curve and history curve is automatically analyzed out, so as to provide section for repair based on condition of component
Foundation is learned, equipment day-to-day operation state evaluation foundation can be also used as.
Because the automatic detection device is used for the equipment that installation and debugging possess service condition or run, therefore main shaft is turned round
The measurement of square must not disconnect original shafting, and the scheme now taken is that foil gauge is pasted on output shaft, the resistance value meeting of foil gauge
Change with the change of main-shaft torque, increased resistance value is converted into voltage signal input computer by circuit is handled.No
Be only able to display the magnitude of voltage of change after now computer, it is necessary to directly display torque value, must input current and moment of torsion ratio system
Number, i.e., it is a few ox rice that 1 millivolt, which represents moment of torsion,.The determination of the proportionality coefficient requires a standard torque sensor and entered at the scene
Row experiment.This project first has to study a kind of main-shaft torque calibration sensor and field calibration method, and simple at the scene
It is easy.
What the project needed measurement is motor drive mechanism main shaft output torque, as it was previously stated, foil gauge is pasted onto with special glue
On main shaft, when main shaft drives, which are loaded, to be rotated, load resistance makes main shaft occur the electricity of resistance wire on micro elastic deformation, foil gauge
Corresponding change occurs with the size of the mechanically deform suffered by it for resistance.Therefore, the changing value of detection resistance just can aspect
Measurement is applied to the moment of torsion on main shaft, i.e. torque sensor needs to make at the scene, as shown in Figure 1.The moment of torsion of field fabrication is passed
Sensor could reflect real torque value firstly the need of demarcation.
1) scaling method
Preparation before demarcation
A. with the hand carry out divide-shut brake for carrying out disconnecting switch of first wife's crank, the feel operating physical force in separating brake or making process
Minimum position is stopped, and is demarcated in this position；
B. calibration sensor is clipped at the about 50mm of the top of main shaft sensor；
C. main-shaft torque sensor and calibration sensor signal wire are inserted into the corresponding jack of detection means respectively, then will inspection
Survey device and open in running order, and complete machine is reset.
Start demarcation
A. a people holds calibration sensor handle, attempts to prevent main axis；
B. the hand motor drive mechanism of another people carries out separating brake or combined floodgate, makes moment of torsion reading >=10N.m of calibration sensor.
C. calculate
At this moment M can be exported respectively by demarcating torque sensor and being calibrated sensor0And M, by M0/ M obtains coefficient a, then measured value
It is exactly the main-shaft torque value that we need to be multiplied by coefficient a.Actually instrument locks maximum automatically, and automatic design factor is simultaneously protected
Deposit.
2) calibration sensor
Fig. 2 is the structure chart of moment of torsion calibration sensor, and it is by torque sensor, rocking arm, handle, fixture block, signal plug etc.
Composition.One end is connected with fixture block, and sensor is serially connected between rocking arm and handle.When holding handle remains stationary fixture block is with axle
During rotation, torque signal is just produced at sensor two ends, this signal passes through socket, cable input detection device.
All material selects high strength alumin ium alloy, it is therefore an objective to which reducing weight makes demarcation not produce additional torque, can guarantee that again
Intensity.Only tight bolt is to prevent fixture block from skidding, and influences the accuracy of demarcation.
Sensor is from high accuracy, microminiature torsion torque sensor, and its purpose is also for overall volume and weight is reduced, really
Protect stated accuracy.
Fixture block is designed as shown in Figure 3 and Figure 4, and fixture block is designed to "U" shaped, and purpose can clamp the main shaft of different-diameter,
The overall requirement of 10-50kV disconnecting switch can be measured by meeting detection main shaft.
Claims (5)
1. a kind of high voltage isolator control box main-shaft torque calibration sensor, is opened being arranged on high_voltage isolation to field calibration
The torque sensor on control box main shaft is closed, described torque sensor includes being made up of 4 piezoelectric patches being pasted onto on main shaft
Full bridge measurement circuit, power supply, amplifier and AD converter, it is characterised in that the calibration sensor includes the folder that is sequentially connected
Component, rocking arm and handle are held, a standard torque sensor is provided between described rocking arm and handle, described clamp assemblies are held tightly
Main shaft, described standard torque sensor and torque sensor are connected with external detector.
2. a kind of high voltage isolator control box main-shaft torque calibration sensor according to claim 1, it is characterised in that
Described clamp assemblies include the first fixture block and the second fixture block by the mutual obvolvent of knob, the first described fixture block and the second folder
Block holds main shaft tightly, and anti-skidding by stopping tight bolt.
3. a kind of high voltage isolator control box main-shaft torque calibration sensor according to claim 2, it is characterised in that
Described the first fixture block and the second fixture block is U-shaped.
4. a kind of high voltage isolator control box main-shaft torque calibration sensor applied as described in claim any one of 1-3
Scaling method, it is characterised in that comprise the following steps：
1) preparation before demarcating：
11) scene rotates the divide-shut brake action of the divide-shut brake crank progress disconnecting switch of high voltage isolator control box, is selected in
The minimum position of operating physical force is demarcated during divide-shut brake；
12) calibration sensor is clipped at the top 50mm of main shaft sensor；
13) torque sensor and the signal wire of calibration sensor are connected with detector respectively；
2) field calibration：
21) fixed calibration sensor handle, to prevent main axis；
22) operation divide-shut brake crank carries out divide-shut brake action, makes moment of torsion reading >=10N.m of calibration sensor.
23) calibration is calculated, and reads the output valve M of calibration sensor and torque sensor0And M, obtain scaling parameter a；
24) after obtaining and obtaining scaling parameter a, according to the number of degrees of torsion moment on the scene sensor be multiplied by scaling parameter a produce it is actual
Main-shaft torque.
5. a kind of scaling method for the high voltage isolator control box main-shaft torque calibration sensor stated according to claim 4, its
It is characterised by, described step 23) in, scaling parameter a calculating formula is：A=M0/M。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342763.8A CN107167728A (en) | 2017-05-16 | 2017-05-16 | A kind of high voltage isolator control box main-shaft torque calibration sensor and scaling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710342763.8A CN107167728A (en) | 2017-05-16 | 2017-05-16 | A kind of high voltage isolator control box main-shaft torque calibration sensor and scaling method |
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| CN107167728A true CN107167728A (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710342763.8A Pending CN107167728A (en) | 2017-05-16 | 2017-05-16 | A kind of high voltage isolator control box main-shaft torque calibration sensor and scaling method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946124A (en) * | 2017-11-08 | 2018-04-20 | 国家电网公司 | Possesses the isolator operation handle of warning function |
| CN109291068A (en) * | 2018-11-27 | 2019-02-01 | 国网山东省电力公司夏津县供电公司 | A kind of high-tension switch cabinet Intelligent robotic manipulator |
| CN110133319A (en) * | 2019-05-10 | 2019-08-16 | 国网上海市电力公司 | High speed grounding switch spindle angular velocity detection device in a kind of GIS device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013195335A (en) * | 2012-03-22 | 2013-09-30 | Chugoku Electric Power Co Inc:The | Disconnector torque measurement apparatus |
| CN204228328U (en) * | 2014-11-13 | 2015-03-25 | 中国船舶重工集团公司第七0四研究所 | Torque sensor calibrating installation dual-purpose under water waterborne |
| CN105527055A (en) * | 2015-12-30 | 2016-04-27 | 常州市计量测试技术研究所 | In-situ calibration device and method for field torque |
| CN106525396A (en) * | 2016-10-20 | 2017-03-22 | 国网上海市电力公司 | Automatic measurement apparatus of isolation switch mechanical load, and detection method of the same |
-
2017
- 2017-05-16 CN CN201710342763.8A patent/CN107167728A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013195335A (en) * | 2012-03-22 | 2013-09-30 | Chugoku Electric Power Co Inc:The | Disconnector torque measurement apparatus |
| CN204228328U (en) * | 2014-11-13 | 2015-03-25 | 中国船舶重工集团公司第七0四研究所 | Torque sensor calibrating installation dual-purpose under water waterborne |
| CN105527055A (en) * | 2015-12-30 | 2016-04-27 | 常州市计量测试技术研究所 | In-situ calibration device and method for field torque |
| CN106525396A (en) * | 2016-10-20 | 2017-03-22 | 国网上海市电力公司 | Automatic measurement apparatus of isolation switch mechanical load, and detection method of the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946124A (en) * | 2017-11-08 | 2018-04-20 | 国家电网公司 | Possesses the isolator operation handle of warning function |
| CN109291068A (en) * | 2018-11-27 | 2019-02-01 | 国网山东省电力公司夏津县供电公司 | A kind of high-tension switch cabinet Intelligent robotic manipulator |
| CN109291068B (en) * | 2018-11-27 | 2024-03-22 | 国网山东省电力公司夏津县供电公司 | Intelligent robot for high-voltage switch cabinet |
| CN110133319A (en) * | 2019-05-10 | 2019-08-16 | 国网上海市电力公司 | High speed grounding switch spindle angular velocity detection device in a kind of GIS device |
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Application publication date: 20170915 |