CN203811311U - High-voltage breaker arc-extinguish chamber kinetic friction force measurement apparatus - Google Patents
High-voltage breaker arc-extinguish chamber kinetic friction force measurement apparatus Download PDFInfo
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- CN203811311U CN203811311U CN201420162365.XU CN201420162365U CN203811311U CN 203811311 U CN203811311 U CN 203811311U CN 201420162365 U CN201420162365 U CN 201420162365U CN 203811311 U CN203811311 U CN 203811311U
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- leading screw
- servo motor
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- arc
- friction force
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Abstract
The utility model discloses a high-voltage breaker arc-extinguish chamber kinetic friction force measurement apparatus. The apparatus comprises an AC servo motor driven by a servo driver. The AC servo motor is connected with a leading screw through a planetary reducer. The leading screw is connected with a first force transducer and then connected with a body joint. At the same time, the body joint is fixedly equipped with a second force transducer and connected with a photoelectric encoder. The servo driver is connected with an upper computer and then connected with a PC. The PC transmits a signal to the servo driver and controls the AC servo motor to start, thereby driving the planetary reducer and the leading screw to transmit through the body joint to make a connecting rod do linear traction motion and driving an arc-extinguish chamber body to open and close. The second force transducer fixed on the connecting rod is a radial force transducer and measures the tractive force. The photoelectric encoder fixed on the AC servo motor measures the displacement and conducts the PID closed-loop control of the displacement. A photoelectric spacing is arranged between the leading screw and the body joint, and the safe and reliable assembling of a tested arc-extinguish chamber is ensured.
Description
Technical field
The utility model belongs to high-tension apparatus technical field, particularly a kind of high-voltage breaker explosion chamber measuring device for dynamic friction force.
Background technology
Greatly develop in country under the background of UHV (ultra-high voltage), high voltage power transmission and distribution field development is swift and violent, particularly as the isolating switch of one of electric energy transmitting core.Because 550kV breaker operator merit is large at present, and must learn related discipline in conjunction with mechanical kinetics, High-Voltage Insulation and magnetic fluid in circuit breaker design, make its performance reach electric, cut-off and the balance of mechanical life, the assembly technology of part is had to very high requirement.At present, arc-chutes and mechanism are selected to assemble respectively by most producers, and mechanical adjustment is carried out in the merging of general assembly (GA) afterwards makes isolating switch meet corresponding mechanical property.If so assembling is abnormal, will cause arc-chutes friction force excessive.Even if the mechanical property of surveying meets the demands, under long-time running, still can cause part aluminum hardware fatigue even to be damaged, cause a serious accident.Therefore measure the Measurement accuracy of the friction force of arc-chutes, isolating switch is being equipped with to great meaning.
In prior art, Chinese patent literature CN202119577U, has recorded a kind of " measurement mechanism of dynamic friction force of arc extinguishing chamber ", discloses a kind of device that uses motor, turbine, worm screw and pressure transducer to measure arc-chutes friction force.But when above-mentioned technology is not considered electric motor starting, electric current is larger, the higher measuring error that causes larger acceleration etc. to cause of moment of torsion when low-speed running, the deficiency such as cannot spacingly control, and actual measurement shows that motor-driven speed difference will cause friction value difference.Therefore, while guaranteeing to measure, the moving side contact part of arc-chutes is carried out straight line uniform motion and is ensured the spacing safety of operation.
Summary of the invention
The purpose of this utility model provides a kind of high-voltage breaker explosion chamber measuring device for dynamic friction force, large to solve existing proving installation measuring error, operates unsafe problem.
The technical solution of the utility model is, a kind of high-voltage breaker explosion chamber measuring device for dynamic friction force, host computer and PC are comprised, described measurement mechanism comprises 1 AC servo motor by servo driver drives, this AC servo motor connects leading screw by planetary reduction gear, this leading screw connects body connector after being hinged with the first power sensor, simultaneously, on described body connector, be fixed with the second power sensor, and connect photoelectric encoder, servo-driver connects PC after connecing host computer, PC starts to servo-driver transmitted signal control AC servo motor, drive planetary reduction gear and leading screw to make connecting rod do straight line pulling motion by the transmission of body connector, drive arc-chutes body to carry out breaking-closing operating, the second power sensor fixing on connecting rod is radial power sensor, tractive force is measured, photoelectric encoder fixing in AC servo motor is measured displacement, the capable PID closed-loop control of contraposition shift-in, between leading screw and body connector, be provided with photoelectric position limit, guarantee that tested arc-chutes assembling is safe and reliable.
Further, described measurement mechanism also comprises that a fixed support connects body connector, and power supply emergency stop device is installed on fixed support, and machine if desired can suddenly have a power failure.
Further, described measurement mechanism comprises a fixed base plate, in order to support whole appliance arrangement.
Epigynous computer section can adopt LabVIEW exploitation, and software is realized parameter setting, measured the functions such as collection, data readback and logging.Host computer output digital pulse signal is to AC servo machinery driving device, thereby controller output SPWM arteries and veins frequency signal reaches the effect of PID displacement control and friction measurement to servomotor.
It is a kind of for measuring the measurement mechanism of 550kV high-voltage breaker explosion chamber kinetic force of friction that the utility model provides.Guarantee that in measuring process, arc-chutes moving component does straight line uniform motion, and adopt SPWM arteries and veins frequency control mode to carry out stepless time adjustment, adopt PID control and 5000 line quadruple frequency light photoelectric coders to carry out Displacement Feedback as position feed back signal, ensure that measuring error is in 0.5%.And designed photoelectric position limit and the two protections of software limit, avoid divide-shut brake process overproof.
Brief description of the drawings
Fig. 1 is System Working Principle schematic diagram of the present utility model.
Fig. 2 is system architecture composition schematic diagram of the present utility model.
Wherein, 1---AC servo motor, 2---planetary reduction gear, 3---leading screw, 4---power sensor, 5---body connector, 6---fixed support, 7---fixed base plate, 8---radial power sensor, 9---photoelectric encoder, 10---servo-driver, 11---host computer, 12---PC.
Embodiment
As shown in Figure 1 and Figure 2, system of the present utility model comprises: AC servo motor 1, planetary reduction gear 2, leading screw 3, power sensor 4, body connector 5, fixed base plate 6, fixed support 7, radial power sensor 8, photoelectric encoder 9, servo-driver 10 and host computer 11 form.AC servo motor 1 connects planetary reduction gear 2; Planetary reduction gear connects leading screw 3; Leading screw 3 connects body connector; Servomotor 1, speed reduction unit 2, leading screw 3, power sensor 4 and body connector 5 are fixed on support 6; Radial power sensor 8 is fixed on body connector 5; Photoelectric encoder 9 is connected with servomotor 1; Host computer 11 and PC are connected with servo-driver 10 by ICP/IP protocol.
The utility model is achieved through the following technical solutions, controller (comprising servo-driver) sends signal and the rotation of pulse direction signal controlling AC servo motor frequently of SPWM arteries and veins, AC servo motor is rotated and is driven speed reduction unit, by leading screw, by the motion of moment gear train, gear train drives arc-chutes pull bar to do straight line uniform motion.Strong sensor and draw-gear are installed in lead screw pair, draw-gear drives the motion of arc-chutes pull bar, realize the divide-shut brake process operation of arc-chutes, the photoelectric encoder displacement signal of controller reception sensor and AC servo motor in divide-shut brake process, measure in real time, Displacement Feedback value PID closed-loop control, controller adopts ICP/IP protocol and computer communication, can realize the two aobvious dual control function of PC and controller.For preventing that the motion of arc-chutes pull bar is unlikely to exceed design code range, and avoid answering back to arc-chutes body, adopt photoelectric position limit and software limit duplicate protection.
First in software interface input operation speed and direction of motion.Click after operation, PC sends SPWM arteries and veins signal and pulse direction signal frequently by ICP/IP protocol to controller, SPWM signal controlling AC servo motor starts, drive planetary reduction gear slow down and increase moment of torsion, make connecting rod do straight line pulling motion by lead screw transmission, drive arc-chutes body to carry out breaking-closing operating.On connecting rod, fix radial power sensor, tractive force is measured; On motor, fixed light photoelectric coder is measured displacement, the capable PID closed-loop control of contraposition shift-in, ensures that displacement is constant to net value: if moment of torsion is larger when electric motor starting, displacement is given and the when corresponding frequencies of SPWM duty that can reduce bigger than normal, cause exporting pulsed quantity and reduce, thereby reduce servomotor rotating speed.If motor speed is too fast, corresponding controllers can increase send pulse number cause motor speed rise.
Because need are considered arc-chutes part self stroke; for preventing that measuring system motor performance from exceeding arc-chutes self stroke; and cause fixed side of arc extinguish chamber and moving side collision and damage; the maximum stroke of measuring is set on host computer operation interface as software protection; between leading screw 3 and body connector 5, use photoelectric position limit as hardware protection, guarantee that system and the assembling of tested arc-chutes are safe and reliable.In addition measure safety for ensureing, power supply emergency stop device is installed on fixed support, machine if desired can suddenly have a power failure.
The device of the arc-chutes friction measurement of high-voltage switch gear of the present utility model, adopts SPWM arteries and veins frequency control mode to carry out stepless time adjustment, adopts PID control and 7200 mercerising photoelectric coders to carry out Displacement Feedback as position feed back signal.Host computer uses Labview compiling, possesses the functions such as parameter setting, normal collection, data readback and logging.In arc-chutes friction measurement system, design the two protections of photoelectric position limit and software limit, avoided divide-shut brake process overproof.
Claims (3)
1. a high-voltage breaker explosion chamber measuring device for dynamic friction force, host computer and PC are comprised, it is characterized in that, described measurement mechanism comprises 1 AC servo motor by servo driver drives, and this AC servo motor connects leading screw by planetary reduction gear, and this leading screw connects body connector after being hinged with the first power sensor, simultaneously, on described body connector, be fixed with the second power sensor, and connect photoelectric encoder
Servo-driver connects PC after connecing host computer,
PC starts to servo-driver transmitted signal control AC servo motor, drives planetary reduction gear and leading screw to make connecting rod do straight line pulling motion by the transmission of body connector, drives arc-chutes body to carry out breaking-closing operating,
The second power sensor fixing on connecting rod is radial power sensor, tractive force measured,
Photoelectric encoder fixing in AC servo motor is measured displacement, the capable PID closed-loop control of contraposition shift-in,
Between leading screw and body connector, be provided with photoelectric position limit, guarantee that tested arc-chutes assembling is safe and reliable.
2. high-voltage breaker explosion chamber measuring device for dynamic friction force as claimed in claim 1, is characterized in that, described measurement mechanism also comprises that a fixed support connects body connector, and power supply emergency stop device is installed on fixed support, and machine if desired can suddenly have a power failure.
3. high-voltage breaker explosion chamber measuring device for dynamic friction force as claimed in claim 2, is characterized in that, described measurement mechanism comprises a fixed base plate, in order to support whole appliance arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162365.XU CN203811311U (en) | 2014-04-02 | 2014-04-02 | High-voltage breaker arc-extinguish chamber kinetic friction force measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162365.XU CN203811311U (en) | 2014-04-02 | 2014-04-02 | High-voltage breaker arc-extinguish chamber kinetic friction force measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811311U true CN203811311U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420162365.XU Expired - Fee Related CN203811311U (en) | 2014-04-02 | 2014-04-02 | High-voltage breaker arc-extinguish chamber kinetic friction force measurement apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799018A (en) * | 2018-12-20 | 2019-05-24 | 河南平高电气股份有限公司 | Arc-extinguishing chamber of circuit breaker friction measurement experimental rig |
-
2014
- 2014-04-02 CN CN201420162365.XU patent/CN203811311U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799018A (en) * | 2018-12-20 | 2019-05-24 | 河南平高电气股份有限公司 | Arc-extinguishing chamber of circuit breaker friction measurement experimental rig |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 |
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| CF01 | Termination of patent right due to non-payment of annual fee |