CN113702892B - Continuous electronic current transformer vibration test device and use method thereof - Google Patents
Continuous electronic current transformer vibration test device and use method thereof Download PDFInfo
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- CN113702892B CN113702892B CN202110997774.6A CN202110997774A CN113702892B CN 113702892 B CN113702892 B CN 113702892B CN 202110997774 A CN202110997774 A CN 202110997774A CN 113702892 B CN113702892 B CN 113702892B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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Abstract
A continuous electronic current transformer vibration test device and a use method thereof; during the test, the pneumatic clamping mechanism is used for placing the transformer into the test bed positioning seat, the transformer is fixed by utilizing vacuum suction to simulate the installation state, the first power receiving mechanism is connected with the transformer and the ammeter, and the height of the second power receiving mechanism is adjusted to enable the second power receiving mechanism to penetrate through the hollow coil of the transformer and be connected with the electric driving equipment; changing input current of the electric drive equipment to simulate short-circuit faults of the electric drive equipment, and detecting vibration, temperature, noise and current of the transformer by using a temperature-vibration integrated sensor, a noise sensor and an ammeter; the test current change mode of the test device is diversified, and the vibration influence of the electric power caused by short-time current under short-circuit fault on the transformer can be accurately simulated; the mutual inductor is stably fixed on the test bed and automatically completes wiring of the mutual inductor, so that stability of a test process is ensured, and detection efficiency is improved; the conveying material line is matched with the pneumatic clamping mechanism, and the conveying direction of the transformer is adjusted according to the detection result.
Description
Technical Field
The invention relates to the technical field of electronic transformer detection, in particular to a continuous electronic current transformer vibration test device and a use method thereof.
Background
The electronic current transformer is widely applied in intelligent substations, and can be divided into an iron core coil LPCT (low power current transformer, low-power current transformer), an air core coil and an all-fiber current transformer according to the sensing principle, wherein the output of the electronic current transformer is that the current is converted into digital quantity through an acquisition unit and then is transmitted to a merging unit through an optical fiber. Because a large number of optical and electronic devices are adopted in the electronic current transformer, when the temperature, the vibration and other stress changes, the stability and the reliability of the equipment can be affected, so that the vibration test detection of the electronic current transformer is a necessary measure for detecting the quality of the transformer.
In the prior art, chinese patent application CN108088637a discloses a "vibration test system of electronic transformer", which simulates the vibration running condition and the bearable vibration level caused by the worst switch operation of the electronic transformer in the running scene, the system includes an electronic transformer, a merging unit, an industrial computer, a circuit breaker, a contact monitoring circuit, a data acquisition card and a photoelectric conversion circuit, the system can effectively check the performance of the electronic transformer under the vibration condition, but the normal running of the system can be seen from the attached drawing to necessarily involve the circuit breaker, the industrial computer and other electrical equipment and the wire connection between the circuit breaker and the industrial computer, and for the vibration test of the transformer under different running scenes, test systems with different electrical structures are required to be built, so the test efficiency is lower, and the test has no continuity. The Chinese patent application (CN 105510859A) discloses an electronic transformer evaluation system and method, wherein the actual working voltage, current and power conditions of the electronic transformer are simulated by adjusting a phase shifter, a voltage regulator and a current booster, a temperature and humidity tester and a vibration tester are used at the same time, the influence degree of environmental factors on the precision of the electronic transformer is comprehensively investigated, and a synchronous source device synchronously compares the sampled data of the convenient electronic transformer and the sampled data of the electronic transformer to be tested, so that the performance of the electronic transformer is qualitatively and quantitatively evaluated; however, the normal operation of the system can be seen from the attached drawings to necessarily involve electric equipment such as a phase shifter, a voltage regulator, a current booster and the like and wire connection among the electric equipment, wiring work of a current transformer test detection device is completed manually, detection efficiency is low, the transformer is subjected to vibration detection by means of the technical means, vibration influence of electric power on the transformer caused by short-time current generated by short-circuit faults is difficult to accurately simulate, and meanwhile, if gaps among all parts of the transformer are too large during assembly, iron cores are unstable to fix, and vibration parameters are greatly influenced.
Therefore, it is necessary to provide a continuous electronic current transformer vibration test device and a use method thereof so as to perform vibration test detection on the electronic current transformer.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a continuous electronic current transformer vibration test device and a use method thereof.
The invention adopts the following technical scheme.
A continuous electronic current transformer vibration test device, comprising: the device comprises a feeding table, a test table and electric driving equipment, wherein the test table is installed at the front end of the feeding table, and the electric driving equipment is fixedly installed on the test table.
The material loading platform includes: the clamping arm main control terminal, the pneumatic clamping mechanism and the two groups of first electric connecting mechanisms; the test stand comprises: test bench master control terminal, positioning seat, integrative sensor, noise sensor, second connect electric mechanism that shakes.
An ammeter is arranged on one side of the outer wall of the pneumatic clamping mechanism, and the front end and the rear end of the pneumatic clamping mechanism are respectively provided with a first power connection mechanism; the output end of the ammeter is electrically connected with the input end of the clamp arm main control terminal.
The positioning seat comprises a plurality of vacuum adsorption holes and an infrared positioning sensor, and a second power connection mechanism is arranged on one side of the positioning seat; the output ends of the infrared positioning sensor, the noise sensor and the Wen Zhen integrated sensor are electrically connected with the input end of the main control terminal of the test bed.
The first power connection mechanism is used for realizing the electric connection between the current transformer to be detected and the ammeter; the second power connection mechanism penetrates through the air coil of the current transformer to be detected and is electrically connected with the zero line end of the electric drive equipment.
When the current transformer to be tested is moved to the clamping position of the feeding table in a test, the clamping arm main control terminal drives the pneumatic clamping mechanism to clamp the current transformer to be tested, the current transformer to be tested is placed on the positioning seat of the test table, when the infrared positioning sensor detects that the current transformer to be tested is placed on the positioning seat, a signal is sent to the main control terminal of the test table, the main control terminal of the test table sends a signal to the vacuum generator, vacuum suction force is generated by the vacuum generator, the bottom surface of the transformer is adsorbed by the vacuum adsorption hole, and the installation state of the bottom of the transformer is simulated when the bottom of the transformer is fixed; meanwhile, wen Zhen integrated sensors are attached to the surface of the current transformer;
The clamping arm main control terminal drives two groups of first power connection mechanisms to realize the electric connection between the current transformer to be detected and the ammeter; the main control terminal of the test bed adjusts the height of the second power connection mechanism, penetrates through the hollow coil of the current transformer to be detected and is electrically connected with the zero line end of the electric drive equipment;
and changing the input current of the electric drive equipment, and detecting the vibration signal, the temperature information and the noise of the current transformer to be detected by using a temperature-vibration integrated sensor and a noise sensor respectively under the state that the analog electric drive equipment has short-circuit fault.
The external power supply of the electric drive equipment is provided with a current booster, and the current booster is used for changing the magnitude of input current of the external power supply to the electric drive equipment.
A feeding line is arranged on one side of the feeding table, a feeding line is arranged on the other side of the feeding table, and a return line is arranged at the rear end of the feeding table;
The clamping arm main control terminal adopts a plurality of operation modes, and when the detection parameters of the current transformer reach preset standard values, the pneumatic clamping mechanism transfers the current transformer to the feeding line; and when the detection parameters of the current transformer do not reach the preset standard values, the pneumatic clamping mechanism transfers the current transformer to the return line.
Preferably, a main control cabinet is arranged at one side of the interior of the feeding table;
The inside of the main control cabinet is provided with a clamping arm main control terminal, an oil cylinder controller, a first air cylinder controller, a first motor driving module and a first wireless data transmission module;
The output end of the clamping arm main control terminal is electrically connected with the input ends of the oil cylinder controller, the first air cylinder controller and the first motor driving module, and the clamping arm main control terminal is in bidirectional connection with the first wireless data transmission module.
Preferably, a gear box is arranged on the upper surface of the feeding table;
the upper end of the gear box is provided with a linkage block, the front end of the linkage block is provided with a power arm, the front end of the power arm is provided with a hydraulic cylinder, and the output end of the hydraulic cylinder is provided with a pneumatic clamping mechanism;
The output end of the first cylinder controller is electrically connected with the input end of the pneumatic clamping mechanism, and the output end of the cylinder controller is electrically connected with the input end of the hydraulic cylinder; the clamping arm main control terminal can send signals to the oil cylinder controller and the first air cylinder controller to drive the hydraulic cylinder and the pneumatic clamping mechanism to clamp the current transformer.
Preferably, a driving chamber is arranged at the other side of the interior of the feeding table; a stepping motor is arranged in the driving chamber;
The stepping motor is fixedly connected with the inner wall of the driving chamber through the hoop support, the output end of the stepping motor penetrates through and extends to the inside of the gear box, a driving gear is arranged at the output end of the stepping motor, a driven gear is arranged at one side of the driving gear, the driving gear is in meshed transmission connection with the driven gear, and the upper end of the driven gear is fixedly connected with the linkage block through a connecting shaft;
The output end of the first motor driving module is electrically connected with the input end of the stepping motor; the stepping motor drives the pneumatic clamping mechanism to rotate anticlockwise by 90 degrees.
Preferably, the lower surface of the test stand is provided with a control room;
The test bed main control terminal, the second cylinder controller, the second motor driving module, the vacuum generator and the second wireless data transmission module are arranged in the control room;
The output end of the test bed main control terminal is electrically connected with the input ends of the second cylinder controller, the second motor driving module and the vacuum generator, and the test bed main control terminal is in bidirectional connection with the second wireless data transmission module.
Preferably, the first wireless data transmission module is connected with the second wireless data transmission module in a bidirectional manner.
Preferably, a positioning seat is arranged at the middle position of the upper surface of the test stand, a plurality of vacuum adsorption holes are formed in the positioning seat, and an infrared positioning sensor is arranged at the middle position of the positioning seat.
Preferably, the front end and the rear end of the positioning seat are respectively provided with a first air cylinder, the output end of each first air cylinder is respectively provided with a pressing plate, and the outer wall of each pressing plate is respectively provided with two groups of temperature and vibration integrated sensors;
The lower end of the second power connection mechanism is arranged on one side of the positioning seat through a second cylinder, and a noise sensor is arranged on the other side of the positioning seat;
the output end of the second cylinder controller is electrically connected with the input ends of the first cylinder and the second cylinder; the second cylinder controller drives the first cylinder to drive the temperature and vibration integrated sensor to be attached to the surface of the current transformer, and meanwhile, the second cylinder controller drives the second cylinder to adjust the height of the second connection mechanism, so that the second connection mechanism can penetrate through the air coil of the transformer.
Preferably, a plurality of through holes are provided beside the noise sensor for mounting the electric driving device.
Preferably, the first power receiving mechanism and the second power receiving mechanism have the same structure and comprise a rack seat, a rack, a conductive core and a stepping motor;
The rack is arranged in the rack seat, the conductive core is arranged in the rack, the contact piece is arranged at one end of the conductive core, the wiring terminal is arranged at the other end of the conductive core, the stepping motor is arranged on the outer wall of the rack seat, the output end of the stepping motor penetrates through and extends to the inside of the rack seat, the rack gear is arranged, and the rack gear is in meshed transmission connection with the rack; one end of the rack is provided with a limiting block.
Preferably, the input ends of the first stepping motors in the two groups of first power connection mechanisms are electrically connected with the input end of a first motor driving module in the main control cabinet, and the first motor driving module drives the two groups of first stepping motors simultaneously, so that rack gears in the two groups of first power connection mechanisms drive rack structures to extend out simultaneously;
the input end of a second stepping motor in the second power connection mechanism is electrically connected with the input end of a second motor driving module in the control room, and the second motor driving module drives the second stepping motor, so that a rack and pinion in the second power connection mechanism drives the rack structure to extend out.
The using method of the continuous electronic current transformer vibration test device comprises the following steps:
step 1, connecting a first power connection mechanism with an ammeter and connecting a second power connection mechanism with electric drive equipment;
Step 2, driving a material conveying line to run, so that the current transformer to be tested moves to a clamping position of the material feeding table through the material conveying line; the pneumatic clamping mechanism clamps the current transformer and rotates 90 degrees anticlockwise, and the transformer is placed on a positioning seat of the test bed;
Step 3, when the infrared positioning sensor detects that the current transformer is arranged in the positioning seat, a signal is sent to a main control terminal of the test bed, the main control terminal of the test bed controls the vacuum generator to generate vacuum suction, the bottom surface of the transformer is adsorbed through the vacuum adsorption hole, and the installation state of the bottom of the transformer is simulated when the bottom of the transformer is fixed; meanwhile, a main control terminal of the test bed controls the temperature and vibration integrated sensor to be attached to the surface of the current transformer, and adjusts the height of the second electric connection mechanism so that the second electric connection mechanism can penetrate through an air coil of the transformer;
Step 4, the clamp arm main control terminal generates signals to the first motor driving module, so that the first stepping motor operates, and the conductive cores in racks of the two groups of first power connection mechanisms are controlled to complete power connection work of the current transformer and the ammeter; the test bed main control terminal sends a signal to the second motor driving module to enable the second stepping motor to operate, controls a conductive core in a rack of the second power connection mechanism to penetrate through an air coil of the transformer, and is connected with a zero line of the electric driving equipment to simulate the working state of the current transformer;
Step 5, in the detection, changing the input current of a power supply to the electric drive equipment through a current booster configured by the power supply, and simulating the vibration influence of the electric power caused by short-time current on the transformer when the electric drive equipment is in short circuit;
Step 6, detecting vibration signals and temperature information of the current transformer by using Wen Zhen integrated sensors, detecting noise of the current transformer by using a noise sensor, detecting current of the current transformer by using an ammeter, and measuring various detection parameters of the current transformer under different vibration frequencies;
Step 7, when the detection parameters of the current transformer reach preset standard values, the pneumatic clamping mechanism transfers the current transformer to a feeding line and enters the next procedure; when the detection parameters of the current transformer do not reach the preset standard values, the pneumatic clamping mechanism transfers the current transformer to a return line, and the current transformer returns to the previous working procedure for maintenance; simultaneously, the pneumatic clamping mechanism returns to the initial position, and the current transformer on the clamping position of the feeding table is continuously sent to the test table.
Preferably, step1 comprises:
Step 1.1, connecting an ammeter on a pneumatic clamping mechanism with a first electric connection mechanism at the front end and the rear end of the clamping mechanism by utilizing a zero line and a live line;
Step 1.2, installing an electric drive device on one side of a test bed, and connecting a live wire end of an external power supply with a live wire interface of the electric drive device;
And 1.3, enabling a zero line of the external power supply to be connected with a wiring terminal of the second power connection mechanism, and enabling a contact piece at the other end to be in contact with a zero line end of the electric drive equipment when the second power connection mechanism stretches out.
The invention has the beneficial effects that compared with the prior art:
1. According to the invention, the current rising device is arranged on the external power supply, when the transformer is subjected to vibration test, the input current of the power supply to the electric driving equipment can be changed through the current rising device arranged on the power supply, when the electric driving equipment is in short circuit, the vibration influence of the short-time current induced electromotive force to the transformer is simulated, so that the test mode is more diversified, the Wen Zhen integrated sensor and the noise sensor are arranged on the test bed, when the test is performed, the vibration signal, the temperature information and the noise of the current transformer can be respectively detected, whether the transformer has the problem that the vibration influence of the short-time current induced by the short-circuit fault to the transformer is difficult to accurately simulate due to the fact that the iron core is unstable due to the fact that the gaps of all parts are too large during assembly is judged through the noise detection, and the problem that the vibration parameter is influenced is solved in the prior art.
2. The feeding work of the current transformer is completed by adopting the pneumatic clamping mechanism, the first power receiving mechanism is arranged at the front end and the rear end of the pneumatic clamping mechanism, the second power receiving mechanism is arranged at one side of the test bed, and during the test, the clamping arm main control terminal and the test bed main control terminal can respectively send signals to the first motor driving module and the second motor driving module, so that the stepping motor on the first power receiving mechanism and the second power receiving mechanism operates, the rack structure is driven to extend by virtue of the rack and pinion, the power receiving work of the current transformer and the ammeter is completed by the conductive cores in the racks of the two groups of first power receiving mechanisms, the racks on the second power receiving mechanism penetrate through the hollow coil of the transformer and are electrically connected with the zero line end of the electric driving equipment, the working state of the current transformer is simulated, the vibration signal and the temperature information during the operation of the transformer are conveniently detected by the temperature vibration integrated sensor, and the problems that the wiring work of the current transformer is completed in a manual mode in the prior art and the detection efficiency is low are solved.
3. Through setting up vacuum adsorption hole and infrared location sensor on the positioning seat of test bench, when infrared location sensor in the positioning seat detects current transformer and puts into the positioning seat, it can send signal to test bench main control terminal, by test bench main control terminal to vacuum generator send signal, utilize vacuum generator to produce vacuum suction, adsorb the transformer bottom surface by vacuum adsorption hole, the installation state when simulating its bottom is fixed for follow-up test process is more stable.
4. According to different detection results, the pneumatic clamping mechanism adopts different operation modes, and if the detection parameters of the transformer reach the preset standard, the pneumatic clamping mechanism can transfer the detection parameters to a feeding line to enter the next working procedure; if the detection parameters of the mutual inductor do not reach the preset standard, the pneumatic clamping mechanism can transfer the mutual inductor to the feed back line, the previous working procedure is returned to be overhauled, the pneumatic clamping mechanism can return to the initial position no matter how the detection result is, the next mutual inductor on the clamping position of the feed back line is continuously transferred to the test bed, so that the mutual inductor is reciprocated, continuous detection is realized, and the test efficiency is remarkably improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a vibration test apparatus for a continuous electronic current transformer according to the present invention;
FIG. 2 is a schematic diagram of a vibration test apparatus for a continuous electronic current transformer according to the present invention;
FIG. 3 is a schematic diagram of a test stand of a vibration test apparatus for a continuous electronic current transformer according to the present invention;
FIG. 4 is a schematic diagram of a partial structure of a hydraulic cylinder and a pneumatic clamping mechanism of a vibration test device of a continuous electronic current transformer;
FIG. 5 is a schematic diagram of the internal structure of the motor connection mechanism of the vibration test device of the continuous electronic current transformer;
FIG. 6 is a schematic diagram showing the internal structure of a driving chamber of a vibration test device for a continuous electronic current transformer according to the present invention;
FIG. 7 is a block flow diagram of a method of using a continuous electronic current transformer vibration test apparatus according to the present invention;
wherein reference numerals in fig. 1 to 6 are explained as follows:
1-a feeding table; 2-supporting columns; 3-a master control cabinet; 4-a drive chamber; 5-a gear box;
6-linkage blocks; 7-a power arm; 8-a hydraulic cylinder; 9-a pneumatic clamping mechanism; 10-a first power receiving mechanism;
11-ammeter; 12-a feed line; 13-a feed line; 14-a return line; 15-a test stand;
16-support legs; 17-a control room; 18-a first cylinder; 19-a second power receiving mechanism;
20-an electric drive device mounting through hole; 21-a positioning seat; 22-vacuum adsorption holes; 23-infrared positioning sensor;
24-noise sensor; 25-pressing plates; 26-Wen Zhen integral sensors; 27-a second cylinder; 28-clamping jaw;
29-a sponge pad; 30-a stepper motor; 31-a rack seat; 32-racks; 33-a conductive core; 34-limiting blocks;
35-terminal; 36-contact; 37-rack and pinion; 38-a stepper motor; 39-hoop brackets;
40-a drive gear; 41-driven gear; 42-clamping arm main control terminal; 43-an oil cylinder controller;
44-a first cylinder controller; 45-a first motor drive module; 46-a first wireless data transmission module;
47-a main control terminal of the test bed; 48-a second cylinder controller; 49-a second motor drive module;
50-a vacuum generator; 51-a second wireless data transmission module.
Detailed Description
The application is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and are not intended to limit the scope of the present application.
As shown in fig. 1 to 6, a vibration test apparatus for a continuous electronic current transformer according to the present invention includes: a loading table 1 and a test table 15.
Support column 2 is all installed around the material loading platform 1 outer wall, master control cabinet 3 is installed to one side of material loading platform 1 inside, one side of master control cabinet 3 is provided with driving chamber 4, the last surface mounting of material loading platform 1 has gear box 5, linkage piece 6 is installed to the upper end of gear box 5, power arm 7 is installed to the front end of linkage piece 6, pneumatic cylinder 8 is installed to the front end of power arm 7, pneumatic fixture 9 is installed on the output of pneumatic cylinder 8, first electric mechanism 10 is all installed on the front end and the rear end face of pneumatic fixture 9, material conveying line 12 is installed to one side of material loading platform 1, material conveying line 13 is installed to the opposite side of material loading platform 1, material returning line 14 is installed to the rear end of material loading platform 1.
The test bed 15 is installed to the front end of material loading platform 1, the lower surface of test bed 15 is provided with control room 17, supporting leg 16 is all installed around control room 17, the intermediate position department of test bed 15 upper surface is provided with positioning seat 21, be provided with a plurality of vacuum adsorption holes 22 on the positioning seat 21, infrared positioning sensor 23 is installed to the intermediate position department of positioning seat 21, first cylinder 18 is all installed to the front end and the rear end of positioning seat 21, install clamp plate 25 on the output of first cylinder 18, install temperature and shake integrative sensor 26 on the outer wall of clamp plate 25, and temperature and shake integrative sensor 26 is provided with two, one side of positioning seat 21 is provided with second and connects electric mechanism 19, the lower extreme of second and connects electric mechanism 19 is connected with positioning seat 21 through second cylinder 27, the opposite side of positioning seat 21 is provided with noise sensor 24.
Further, the arm-clamping main control terminal 42, the oil cylinder controller 43, the first air cylinder controller 44, the first motor driving module 45 and the first wireless data transmission module 46 are installed in the main control cabinet 3, the test bench main control terminal 47, the second air cylinder controller 48, the second motor driving module 49, the vacuum generator 50 and the second wireless data transmission module 51 are installed in the control room 17, the output end of the arm-clamping main control terminal 42 is electrically connected with the input ends of the oil cylinder controller 43, the first air cylinder controller 44 and the first motor driving module 45, the output end of the test bench main control terminal 47 is electrically connected with the input ends of the second air cylinder controller 48, the second motor driving module 49 and the vacuum generator 50, the arm-clamping main control terminal 42 is in bidirectional connection with the first wireless data transmission module 46, the test bench main control terminal 47 is in bidirectional connection with the second wireless data transmission module 51, the arm-clamping main control terminal 42 and the test bench main control terminal 47 can respectively control the operation of each element on the test bench 15, and the pneumatic operation of each element can realize the two through wireless data transmission, and the two can realize the convenient data intercommunication.
Further, the first power receiving mechanism 10 and the second power receiving mechanism 19 include a rack seat 31, a rack 32 and a conductive core 33, the rack 32 is installed in the rack seat 31, the conductive core 33 is installed in the rack 32, a contact 36 is installed at one end of the conductive core 33, a terminal 35 is installed at the other end of the conductive core 33, a stepping motor 30 is installed on the outer wall of the rack seat 31, an output end of the stepping motor 30 penetrates through and extends to the inside of the rack seat 31, a rack gear 37 is installed, the rack gear 37 is in meshed transmission connection with the rack 32, an input end of the stepping motor 30 is electrically connected with input ends of a first motor driving module 45 and a second motor driving module 49, a limiting block 34 is installed at one end of the rack 32, and when the stepping motor 30 is driven, the output end of the stepping motor can drive the rack gear 37 to be in meshed transmission with the rack 32, so that the conductive core 33 in the rack 32 can be in contact connection with a contact point through the contact 36.
Further, an ammeter 11 is installed on one side of the outer wall of the pneumatic clamping mechanism 9, the output end of the ammeter 11 is electrically connected with the input end of the clamping arm main control terminal 42, and the ammeter 11 can detect the power supply current of the driving device.
Further, clamping jaw 28 is installed to pneumatic fixture 9's lower extreme, and the cylinder in pneumatic fixture 9 passes through the link and is connected with clamping jaw 28 transmission, installs foam-rubber cushion 29 on clamping jaw 28's the inner wall, and foam-rubber cushion 29 can make clamping jaw 28 more stable centre gripping current transformer, prevents the slippage condition emergence.
Further, the output ends of the infrared positioning sensor 23, the noise sensor 24 and the temperature and vibration integrated sensor 26 are electrically connected with the input end of the main control terminal 47 of the test stand, whether the current transformer reaches a designated placement site can be confirmed by the infrared positioning sensor 23, and the noise sensor 24 and the temperature and vibration integrated sensor 26 can respectively detect vibration signals, temperature information, noise and current of the current transformer.
Further, the internally mounted of drive chamber 4 has step motor 38, step motor 38 passes through staple bolt support 39 and the inner wall fixed connection of drive chamber 4, step motor 38's output runs through and extends to the inside of gear box 5, and install driving gear 40, one side of driving gear 40 is provided with driven gear 41, driving gear 40 and driven gear 41 meshing transmission are connected, and driven gear 41's upper end passes through connecting axle and linkage piece 6 fixed connection, step motor 38 can rely on the gear structure to drive the arm lock deflection.
Further, a plurality of electric drive equipment installation through holes 20 are formed in the outer wall of one side of the upper surface of the positioning seat 21, the electric drive equipment installation through holes 20 are used for installing electric drive equipment, and the state of equipment running current is detected by the current transformer is simulated.
Further, the output end of the first cylinder controller 44 is electrically connected to the input end of the pneumatic clamping mechanism 9, the output end of the cylinder controller 43 is electrically connected to the input end of the hydraulic cylinder 8, the output end of the second cylinder controller 48 is electrically connected to the input ends of the first cylinder 18 and the second cylinder 27, and the first cylinder controller 44, the cylinder controller 43 and the second cylinder controller 48 can further control the operation of the device elements.
Referring to fig. 7, a method for using a continuous electronic current transformer vibration test apparatus includes:
step 1, connecting a first power connection mechanism with an ammeter and connecting a second power connection mechanism with electric drive equipment;
Specifically, step1 includes:
Step 1.1, connecting an ammeter on a pneumatic clamping mechanism with a first electric connection mechanism at the front end and the rear end of the clamping mechanism by utilizing a zero line and a live line;
Step 1.2, installing an electric drive device on one side of a test bed, and connecting a live wire end of an external power supply with a live wire interface of the electric drive device;
And 1.3, enabling a zero line of the external power supply to be connected with a wiring terminal of the second power connection mechanism, and enabling a contact piece at the other end to be in contact with a zero line end of the electric drive equipment when the second power connection mechanism stretches out.
Step 2, driving a material conveying line to run, so that the current transformer to be tested moves to a clamping position of the material feeding table through the material conveying line; the pneumatic clamping mechanism clamps the current transformer and rotates 90 degrees anticlockwise, and the transformer is placed on a positioning seat of the test bed;
Step 3, when the infrared positioning sensor detects that the current transformer is arranged in the positioning seat, a signal is sent to a main control terminal of the test bed, the main control terminal of the test bed controls the vacuum generator to generate vacuum suction, the bottom surface of the transformer is adsorbed through the vacuum adsorption hole, and the installation state of the bottom of the transformer is simulated when the bottom of the transformer is fixed; meanwhile, a main control terminal of the test bed controls the temperature and vibration integrated sensor to be attached to the surface of the current transformer, and adjusts the height of the second electric connection mechanism so that the second electric connection mechanism can penetrate through an air coil of the transformer;
Step 4, the clamp arm main control terminal generates signals to the first motor driving module, so that the first stepping motor operates, and the conductive cores in racks of the two groups of first power connection mechanisms are controlled to complete power connection work of the current transformer and the ammeter; the test bed main control terminal sends a signal to the second motor driving module to enable the second stepping motor to operate, controls a conductive core in a rack of the second power connection mechanism to penetrate through an air coil of the transformer, and is connected with a zero line of the electric driving equipment to simulate the working state of the current transformer;
Step 5, in the detection, changing the input current of a power supply to the electric drive equipment through a current booster configured by the power supply, and simulating the vibration influence of the electric power caused by short-time current on the transformer when the electric drive equipment is in short circuit;
Step 6, detecting vibration signals and temperature information of the current transformer by using Wen Zhen integrated sensors, detecting noise of the current transformer by using a noise sensor, detecting current of the current transformer by using an ammeter, and measuring various detection parameters of the current transformer under different vibration frequencies;
Step 7, when the detection parameters of the current transformer reach preset standard values, the pneumatic clamping mechanism transfers the current transformer to a feeding line and enters the next procedure; when the detection parameters of the current transformer do not reach the preset standard values, the pneumatic clamping mechanism transfers the current transformer to a return line, and the current transformer returns to the previous working procedure for maintenance; simultaneously, the pneumatic clamping mechanism returns to the initial position, and the current transformer on the clamping position of the feeding table is continuously sent to the test table.
Example 1.
The working process of the continuous current transformer vibration test device provided by the invention comprises the following steps:
Firstly, connecting an ammeter 11 on a pneumatic clamping mechanism 9 with a first power connection mechanism 10 at the front end and the rear end of the clamping mechanism by utilizing a zero line and a live line, then installing an electric driving device on one side of a test bench 15, connecting the live line end of an external power supply with a live line interface of the electric driving device, connecting the zero line end to a wiring terminal 35 of a second power connection mechanism 19, enabling a contact piece 36 at the other end to be in contact with the zero line end of the electric driving device when the second power connection mechanism 19 stretches out, and providing an up-converter on the external power supply;
After preparation, a feeding line 13 is driven to run, when a current transformer on the feeding line 13 moves to a clamping position of the feeding table 1, a clamping arm main control terminal 42 in the feeding table 1 sends signals to an oil cylinder controller 43 and a first air cylinder controller 44, a hydraulic cylinder 8 and a pneumatic clamping mechanism 9 are driven to clamp the current transformer, the pneumatic clamping mechanism 9 is driven to rotate anticlockwise by 90 degrees by means of a stepping motor 38, and the transformer is placed on a positioning seat 21 of a test table 15;
When the infrared positioning sensor 23 in the positioning seat 21 detects that an article is placed, the infrared positioning sensor can send a signal to the main control terminal 47 of the test bed, the main control terminal 47 of the test bed sends a signal to the second cylinder controller 48 and the vacuum generator 50, the vacuum generator 50 is used for generating vacuum suction, the bottom surface of the transformer is adsorbed by the vacuum adsorption hole 22 to simulate the installation state when the bottom is fixed, meanwhile, the second cylinder controller 48 drives the first cylinder 18 and the second cylinder 27 to operate, the first cylinder 18 drives the temperature and vibration integrated sensor 26 to be attached to the surface of the current transformer, and the second cylinder 27 is used for adjusting the height of the second electric connection mechanism 19 so that the second electric connection mechanism can penetrate through a hollow coil of the transformer;
After the adjustment is finished, the clamp arm main control terminal 42 and the test bed main control terminal 47 respectively send signals to the first motor driving module 45 and the second motor driving module 49, so that the stepping motors 30 on the first power receiving mechanism 10 and the second power receiving mechanism 19 run, the rack 32 is driven to extend out by virtue of the rack gears 37, the power connection work of the current transformer and the ammeter 11 is completed by the conductive cores 33 in the racks 32 of the two groups of first power receiving mechanisms 10, the racks 32 on the second power receiving mechanism 19 pass through the hollow coil of the transformer and are connected with the zero line end of the electric driving equipment, the working state of the current transformer is simulated, and the influence of the current transformer on the vibration parameters of the transformer is detected;
when the detection is carried out, the input current of the power supply to the electric drive equipment is changed through a current booster arranged on the power supply, and the vibration influence of the electric power caused by short-time current on the transformer is simulated when the electric drive equipment is in short circuit;
During simulation work, the Wen Zhen integrated sensor 26, the noise sensor 24 and the ammeter 11 can respectively detect vibration signals, temperature information, noise and current of the current transformer, and accurately measure the influence of vibration frequency on each parameter of the transformer;
If the detection parameters of the mutual inductor reach the preset standard, the pneumatic clamping mechanism 9 can transfer the mutual inductor to the feeding line 13 to enter the next working procedure; if the detection parameters of the mutual inductor do not reach the preset standard, the pneumatic clamping mechanism 9 can transfer the mutual inductor to the feed back line 14, the previous working procedure is returned to be overhauled, meanwhile, the pneumatic clamping mechanism 9 returns to the initial position, and the mutual inductor on the clamping position of the feed line 12 is continuously sent to the test bed 15, so that the mutual inductor reciprocates, and continuous detection is realized.
The invention has the beneficial effects that compared with the prior art:
1. According to the invention, the current rising device is arranged on the external power supply, when the transformer is subjected to vibration test, the input current of the power supply to the electric driving equipment can be changed through the current rising device arranged on the power supply, when the electric driving equipment is in short circuit, the vibration influence of the short-time current induced electromotive force to the transformer is simulated, so that the test mode is more diversified, the Wen Zhen integrated sensor and the noise sensor are arranged on the test bed, when the test is performed, the vibration signal, the temperature information and the noise of the current transformer can be respectively detected, whether the transformer has the problem that the vibration influence of the short-time current induced by the short-circuit fault to the transformer is difficult to accurately simulate due to the fact that the iron core is unstable due to the fact that the gaps of all parts are too large during assembly is judged through the noise detection, and the problem that the vibration parameter is influenced is solved in the prior art.
2. The feeding work of the current transformer is completed by adopting the pneumatic clamping mechanism, the first power receiving mechanism is arranged at the front end and the rear end of the pneumatic clamping mechanism, the second power receiving mechanism is arranged at one side of the test bed, and during the test, the clamping arm main control terminal and the test bed main control terminal can respectively send signals to the first motor driving module and the second motor driving module, so that the stepping motor on the first power receiving mechanism and the second power receiving mechanism operates, the rack structure is driven to extend by virtue of the rack and pinion, the power receiving work of the current transformer and the ammeter is completed by the conductive cores in the racks of the two groups of first power receiving mechanisms, the racks on the second power receiving mechanism penetrate through the hollow coil of the transformer and are electrically connected with the zero line end of the electric driving equipment, the working state of the current transformer is simulated, the vibration signal and the temperature information during the operation of the transformer are conveniently detected by the temperature vibration integrated sensor, and the problems that the wiring work of the current transformer is completed in a manual mode in the prior art and the detection efficiency is low are solved.
3. Through setting up vacuum adsorption hole and infrared location sensor on the positioning seat of test bench, when infrared location sensor in the positioning seat detects current transformer and puts into the positioning seat, it can send signal to test bench main control terminal, by test bench main control terminal to vacuum generator send signal, utilize vacuum generator to produce vacuum suction, adsorb the transformer bottom surface by vacuum adsorption hole, the installation state when simulating its bottom is fixed for follow-up test process is more stable.
4. According to different detection results, the pneumatic clamping mechanism adopts different operation modes, and if the detection parameters of the transformer reach the preset standard, the pneumatic clamping mechanism can transfer the detection parameters to a feeding line to enter the next working procedure; if the detection parameters of the mutual inductor do not reach the preset standard, the pneumatic clamping mechanism can transfer the mutual inductor to the feed back line, the previous working procedure is returned to be overhauled, the pneumatic clamping mechanism can return to the initial position no matter how the detection result is, the next mutual inductor on the clamping position of the feed back line is continuously transferred to the test bed, so that the mutual inductor is reciprocated, continuous detection is realized, and the test efficiency is remarkably improved.
While the applicant has described and illustrated the embodiments of the present invention in detail with reference to the drawings, it should be understood by those skilled in the art that the above embodiments are only preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not to limit the scope of the present invention, but any improvements or modifications based on the spirit of the present invention should fall within the scope of the present invention.
Claims (14)
1. A continuous electronic current transformer vibration test device, comprising: the front end of the feeding table is provided with the test table, the test table is fixedly provided with the electric driving equipment, and is characterized in that,
The material loading platform includes: the clamping arm main control terminal, the pneumatic clamping mechanism and the two groups of first electric connecting mechanisms; the test stand comprises: the test bed main control terminal, the positioning seat, the temperature and vibration integrated sensor, the noise sensor and the second power connection mechanism; the first power connection mechanism and the second power connection mechanism have the same structure and comprise a rack seat, a rack, a conductive core and a stepping motor; the rack is arranged in the rack seat, the conductive core is arranged in the rack, a contact piece is arranged at one end of the conductive core, a wiring terminal is arranged at the other end of the conductive core, a stepping motor is arranged on the outer wall of the rack seat, the output end of the stepping motor penetrates through and extends to the inside of the rack seat, and a rack gear is arranged and is in meshed transmission connection with the rack; a limiting block is arranged at one end of the rack;
An ammeter is arranged on one side of the outer wall of the pneumatic clamping mechanism, and the front end and the rear end of the pneumatic clamping mechanism are respectively provided with a first power connection mechanism; the output end of the ammeter is electrically connected with the input end of the clamp arm main control terminal;
The positioning seat comprises a plurality of vacuum adsorption holes and an infrared positioning sensor, and a second power-on mechanism is arranged on one side of the positioning seat; the output ends of the infrared positioning sensor, the noise sensor and the Wen Zhen integrated sensor are electrically connected with the input end of the main control terminal of the test bed;
The first power connection mechanism is used for realizing the electric connection between the current transformer to be detected and the ammeter; the input ends of the first stepping motors in the two groups of first power-on mechanisms are electrically connected with the input end of a first motor driving module in the main control cabinet, and the first motor driving module drives the two groups of first stepping motors simultaneously, so that rack gears in the two groups of first power-on mechanisms drive rack structures to extend out simultaneously; the second power connection mechanism penetrates through the air coil of the current transformer to be detected and is electrically connected with the zero line end of the electric drive equipment; the input end of a second stepping motor in the second power connection mechanism is electrically connected with the input end of a second motor driving module in the control room, and the second motor driving module drives the second stepping motor, so that a rack and pinion in the second power connection mechanism drives the rack structure to extend out.
2. A continuous electronic current transformer vibration testing device according to claim 1, wherein,
When the current transformer to be tested is moved to the clamping position of the feeding table in a test, the clamping arm main control terminal drives the pneumatic clamping mechanism to clamp the current transformer to be tested, the current transformer to be tested is placed on the positioning seat of the test table, when the infrared positioning sensor detects that the current transformer to be tested is placed on the positioning seat, a signal is sent to the main control terminal of the test table, the main control terminal of the test table sends a signal to the vacuum generator, vacuum suction force is generated by the vacuum generator, the bottom surface of the transformer is adsorbed by the vacuum adsorption hole, and the installation state of the bottom of the transformer is simulated when the bottom of the transformer is fixed; meanwhile, wen Zhen integrated sensors are attached to the surface of the current transformer;
The clamping arm main control terminal drives two groups of first power connection mechanisms to realize the electric connection between the current transformer to be detected and the ammeter; the main control terminal of the test bed adjusts the height of the second power connection mechanism, penetrates through the hollow coil of the current transformer to be detected and is electrically connected with the zero line end of the electric drive equipment;
and changing the input current of the electric drive equipment, and detecting the vibration signal, the temperature information and the noise of the current transformer to be detected by using a temperature-vibration integrated sensor and a noise sensor respectively under the state that the analog electric drive equipment has short-circuit fault.
3. A continuous electronic current transformer vibration testing device according to claim 1, wherein,
The external power supply of the electric drive equipment is provided with a current booster, and the current booster is used for changing the magnitude of input current of the external power supply to the electric drive equipment.
4. A continuous electronic current transformer vibration testing device according to claim 1, wherein,
A feeding line is arranged on one side of the feeding table, a feeding line is arranged on the other side of the feeding table, and a return line is arranged at the rear end of the feeding table;
The clamping arm main control terminal adopts a plurality of operation modes, and when the detection parameters of the current transformer reach preset standard values, the pneumatic clamping mechanism transfers the current transformer to the feeding line; when the detection parameters of the current transformer do not reach the preset standard values, the pneumatic clamping mechanism transfers the current transformer to the return line.
5. A continuous electronic current transformer vibration testing device according to claim 1, wherein,
A main control cabinet is arranged on one side of the interior of the feeding table;
the inside of the main control cabinet is provided with a clamping arm main control terminal, an oil cylinder controller, a first air cylinder controller, a first motor driving module and a first wireless data transmission module;
The output end of the clamping arm main control terminal is electrically connected with the input ends of the oil cylinder controller, the first air cylinder controller and the first motor driving module, and the clamping arm main control terminal is in bidirectional connection with the first wireless data transmission module.
6. A continuous electronic current transformer vibration testing device according to claim 5, wherein,
A gear box is arranged on the upper surface of the feeding table;
The upper end of the gear box is provided with a linkage block, the front end of the linkage block is provided with a power arm, the front end of the power arm is provided with a hydraulic cylinder, and the output end of the hydraulic cylinder is provided with a pneumatic clamping mechanism;
The output end of the first cylinder controller is electrically connected with the input end of the pneumatic clamping mechanism, and the output end of the cylinder controller is electrically connected with the input end of the hydraulic cylinder; the clamping arm main control terminal can send signals to the oil cylinder controller and the first air cylinder controller to drive the hydraulic cylinder and the pneumatic clamping mechanism to clamp the current transformer.
7. A continuous electronic current transformer vibration testing device according to claim 6, wherein,
A driving chamber is arranged on the other side of the interior of the feeding table; a stepping motor is arranged in the driving chamber;
the stepping motor is fixedly connected with the inner wall of the driving chamber through the hoop support, the output end of the stepping motor penetrates through and extends to the inside of the gear box, a driving gear is arranged on the output end of the stepping motor, a driven gear is arranged on one side of the driving gear, the driving gear is in meshed transmission connection with the driven gear, and the upper end of the driven gear is fixedly connected with the linkage block through a connecting shaft;
The output end of the first motor driving module is electrically connected with the input end of the stepping motor; the stepping motor drives the pneumatic clamping mechanism to rotate anticlockwise by 90 degrees.
8. A continuous electronic current transformer vibration testing device according to claim 5, wherein,
The lower surface of the test bed is provided with a control room;
the test bed main control terminal, the second cylinder controller, the second motor driving module, the vacuum generator and the second wireless data transmission module are arranged in the control room;
The output end of the test bed main control terminal is electrically connected with the input ends of the second cylinder controller, the second motor driving module and the vacuum generator, and the test bed main control terminal is in bidirectional connection with the second wireless data transmission module.
9. A continuous electronic current transformer vibration testing device according to claim 8, wherein,
The first wireless data transmission module is connected with the second wireless data transmission module in a bidirectional mode.
10. A continuous electronic current transformer vibration testing device according to claim 1, wherein,
The positioning seat is arranged at the middle position of the upper surface of the test bed, a plurality of vacuum adsorption holes are formed in the positioning seat, and an infrared positioning sensor is arranged at the middle position of the positioning seat.
11. A continuous electronic current transformer vibration testing device according to claim 8, wherein,
The front end and the rear end of the positioning seat are respectively provided with a first air cylinder, the output end of each first air cylinder is respectively provided with a pressing plate, and the outer wall of each pressing plate is respectively provided with two groups of temperature and vibration integrated sensors;
the lower end of the second power connection mechanism is arranged on one side of the positioning seat through a second cylinder, and a noise sensor is arranged on the other side of the positioning seat;
The output end of the second cylinder controller is electrically connected with the input ends of the first cylinder and the second cylinder; the second cylinder controller drives the first cylinder to drive the temperature and vibration integrated sensor to be attached to the surface of the current transformer, and meanwhile, the second cylinder controller drives the second cylinder to adjust the height of the second connection mechanism, so that the second connection mechanism can penetrate through the air coil of the transformer.
12. A continuous electronic current transformer vibration testing device according to claim 11, wherein,
And a plurality of through holes are formed beside the noise sensor and are used for installing electric driving equipment.
13. A method for using a continuous electronic current transformer vibration test device realized by using the continuous electronic current transformer vibration test device as claimed in claim 8, characterized in that,
The method comprises the following steps:
step 1, connecting a first power connection mechanism with an ammeter and connecting a second power connection mechanism with electric drive equipment;
Step 2, driving a material conveying line to run, so that the current transformer to be tested moves to a clamping position of the material feeding table through the material conveying line; the pneumatic clamping mechanism clamps the current transformer and rotates 90 degrees anticlockwise, and the transformer is placed on a positioning seat of the test bed;
Step 3, when the infrared positioning sensor detects that the current transformer is arranged in the positioning seat, a signal is sent to a main control terminal of the test bed, the main control terminal of the test bed controls the vacuum generator to generate vacuum suction, the bottom surface of the transformer is adsorbed through the vacuum adsorption hole, and the installation state of the bottom of the transformer is simulated when the bottom of the transformer is fixed; meanwhile, a main control terminal of the test bed controls the temperature and vibration integrated sensor to be attached to the surface of the current transformer, and adjusts the height of the second electric connection mechanism so that the second electric connection mechanism can penetrate through an air coil of the transformer;
Step 4, the clamp arm main control terminal sends a signal to the first motor driving module so that the first stepping motor operates, and the conductive cores in racks of the two groups of first power connection mechanisms are controlled to complete power connection work of the current transformer and the ammeter; the test bed main control terminal sends a signal to the second motor driving module to enable the second stepping motor to operate, controls a conductive core in a rack of the second power connection mechanism to penetrate through an air coil of the transformer, and is connected with a zero line of the electric driving equipment to simulate the working state of the current transformer;
Step 5, in the detection, changing the input current of a power supply to the electric drive equipment through a current booster configured by the power supply, and simulating the vibration influence of the electric power caused by short-time current on the transformer when the electric drive equipment is in short circuit;
Step 6, detecting vibration signals and temperature information of the current transformer by using Wen Zhen integrated sensors, detecting noise of the current transformer by using a noise sensor, detecting current of the current transformer by using an ammeter, and measuring various detection parameters of the current transformer under different vibration frequencies;
Step 7, when the detection parameters of the current transformer reach preset standard values, the pneumatic clamping mechanism transfers the current transformer to a feeding line and enters the next procedure; when the detection parameters of the current transformer do not reach the preset standard values, the pneumatic clamping mechanism transfers the current transformer to a return line, and the current transformer returns to the previous working procedure for maintenance; simultaneously, the pneumatic clamping mechanism returns to the initial position, and the current transformer on the clamping position of the feeding table is continuously sent to the test table.
14. The method of claim 13, wherein,
The step 1 comprises the following steps:
Step 1.1, connecting an ammeter on a pneumatic clamping mechanism with a first electric connection mechanism at the front end and the rear end of the clamping mechanism by utilizing a zero line and a live line;
Step 1.2, installing an electric drive device on one side of a test bed, and connecting a live wire end of an external power supply with a live wire interface of the electric drive device;
And 1.3, enabling a zero line of the external power supply to be connected with a wiring terminal of the second power connection mechanism, and enabling a contact piece at the other end to be in contact with a zero line end of the electric drive equipment when the second power connection mechanism stretches out.
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