CN108344911B - Valve core testing device - Google Patents
Valve core testing device Download PDFInfo
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- CN108344911B CN108344911B CN201810133559.XA CN201810133559A CN108344911B CN 108344911 B CN108344911 B CN 108344911B CN 201810133559 A CN201810133559 A CN 201810133559A CN 108344911 B CN108344911 B CN 108344911B
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 77
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- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 230000001133 acceleration Effects 0.000 claims abstract description 19
- 230000033001 locomotion Effects 0.000 claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 93
- 229910052742 iron Inorganic materials 0.000 claims description 48
- 230000005389 magnetism Effects 0.000 claims description 19
- 230000004044 response Effects 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 description 6
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- 238000003754 machining Methods 0.000 description 1
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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
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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
- G01M13/00—Testing of machine parts
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Abstract
The invention provides a valve core testing device, which relates to the technical field of high-speed switch valve detection and comprises a base, a laser displacement detection device, an electromagnetic coil assembly, a heating device, a connection sensing assembly, a micrometer screw assembly, a current sensor and a central console; the micrometer screw assembly is used for limiting the displacement of the valve core and is connected with the sensing assembly to detect the electromagnetic force; the laser displacement detection device is used for detecting the movement distance, the speed and the acceleration of the valve core; the heating device controls the ambient temperature of the electromagnetic coil assembly, and the current sensor detects the coil voltage and the coil current of the electromagnetic coil assembly; the technical problems that the valve core detection suspension is not easy to operate, the electromagnetic force of the valve core cannot be detected dynamically and the detection result is single in the prior art are solved; the performance data of the valve core at different moments and different states can be measured, and the characteristics of the valve core can be better researched.
Description
Technical Field
The invention relates to the technical field of high-speed switch valve detection, in particular to a valve core testing device.
Background
The high-speed switch valve is an electro-hydraulic control conversion element with the characteristics of small volume, high response speed, flexible control, simple structure, strong anti-pollution capacity, high reliability, low price, good matching with an electronic circuit and the like, and a detection device is required to detect the valve core of the high-speed switch valve aiming at various performances of the high-speed switch valve.
The valve core detection device in the prior art generally detects the valve core by hanging a heavy object or adding a spring balance on the valve core through an electromagnetic force measuring device.
However, the valve core detection device in the prior art has the defects that the valve core is smooth, and the suspension is not easy to operate; in addition, in the prior art, the electromagnetism in the attraction state of the movable iron and the fixed iron can be measured, and the electromagnetism in the intermediate state cannot be measured.
Disclosure of Invention
The invention aims to provide a valve core testing device to solve the technical problems that in the prior art, valve core detection suspension is not easy to operate, electromagnetism of a valve core cannot be detected in a dynamic state, and a detection result is single.
The invention provides a valve core testing device, which is used for a high-speed switch valve and comprises: the device comprises a base, a laser displacement detection device, an electromagnetic coil assembly, a heating device, a connection sensing assembly, a micrometer caliper assembly, a current sensor and a central console;
the laser displacement detection device, the electromagnetic coil assembly, the heating device, the connection sensing assembly and the micrometer screw assembly are all arranged on the base;
the solenoid coil assembly is internally provided with a valve core, the valve core is connected with the micrometer screw gauge assembly through a connecting sensing assembly, the micrometer screw gauge assembly is used for limiting the displacement of the valve core so as to detect the size of electromagnetic force corresponding to a working air gap of the high-speed switch valve through the connecting sensing assembly, the connecting sensing assembly is electrically connected with the central console, and the central console is used for storing the position of the solenoid coil assembly relative to the working air gap, the size of the working air gap and the size of the electromagnetic force;
the electromagnetic coil assembly is positioned between the laser displacement detection device and the spiral micrometer assembly, the laser displacement detection device is used for detecting the movement distance, the speed and the acceleration of the valve core, the laser displacement detection device is electrically connected with the central console, and the central console is used for storing the information of the movement distance, the speed and the acceleration of the valve core;
the heating device is arranged on one side of the electromagnetic coil assembly and is electrically connected with the central console, and the central console is used for controlling the temperature of the ambient environment where the electromagnetic coil assembly is located through the heating device and storing the temperature information into the central console;
the current sensor is arranged in the electromagnetic coil assembly and is electrically connected with the central console, and the central console is used for detecting the coil voltage and the coil current of the electromagnetic coil assembly through the current sensor and storing the information of the coil voltage and the coil current into the central console;
the central console is pre-stored with the coil turns of the electromagnetic coil assembly, and stores the relative working air gap position of the electromagnetic coil assembly, the working air gap size of the high-speed switch valve, the size of electromagnetic force, coil voltage, coil current and the movement distance, speed and acceleration information of the valve core according to the coil turns;
the central console is used for obtaining the response time of the valve core through the starting time of the valve core displacement and the starting time of the current passing through the electromagnetic coil assembly, and storing the response time into the central console.
Further, the electromagnetic coil assembly includes: the electromagnetic coil comprises an electromagnetic coil support, a valve core, a magnetism isolating pipe, a first jackscrew, a moving iron, a fixed iron, an electromagnetic coil, a magnetism isolating pipe pressure plate, an electromagnetic coil position adjusting part and an electromagnetic coil adjusting part;
the fixed iron is sleeved outside the valve core, the moving iron is abutted against the valve core, one end of the valve core, far away from the moving iron, is connected with the connecting sensing assembly, the electromagnetic coil is installed on an electromagnetic coil support through a first jackscrew, the base is provided with a first long trapezoidal hole, and the electromagnetic coil support is connected with the base through the first long trapezoidal hole so as to slide relative to the base along the first long trapezoidal hole and be used for adjusting the coaxiality of the valve core and the connecting sensing assembly;
the magnetism isolating pipe is arranged on one side of the moving iron, which is far away from the valve core, and is connected with the moving iron, and the magnetism isolating pipe pressing plate is arranged on one side of the electromagnetic coil support, which is close to the connection sensing assembly, and is connected with the electromagnetic coil support;
the electromagnetic coil position adjusting part is arranged in the electromagnetic coil and used for adjusting the position of the electromagnetic coil relative to the working air gap position of the high-speed switch valve;
the electromagnetic coil adjusting parts are arranged on two sides of the outer part and used for centering adjustment on the electromagnetic coil so as to adapt to the electromagnetic coils with different diameters.
Further, the laser displacement detection device comprises a laser displacement sensor, a second jackscrew and a laser displacement support;
the laser displacement sensor is installed on the laser displacement support through the second jackscrew, and the base is provided with the long trapezoidal hole of second, and the laser displacement support is connected with the base through the long trapezoidal hole of second, has seted up the moving-iron inspection hole on the magnetism isolating pipe, and the laser displacement support slides for the base along the long trapezoidal hole of second to the infrared ray that makes the laser displacement sensor transmission shines to moving-iron department through moving-iron inspection hole.
Furthermore, the connection sensing assembly comprises a valve core thimble and a pull pressure sensor;
the valve core thimble is connected with a pull pressure sensor, one end of the pull pressure sensor, which is far away from the valve core thimble, is connected with the micrometer caliper assembly, and the valve core thimble can be abutted against the valve core.
Furthermore, the micrometer screw assembly comprises a micrometer screw, a third jackscrew and a micrometer screw support;
the micrometer screw is arranged on the micrometer screw support through a third jackscrew, the base is provided with a third long trapezoidal hole, and the micrometer screw support is connected with the base through the third long trapezoidal hole so that the micrometer screw support slides relative to the base along the third long trapezoidal hole;
when the valve core thimble contacts with the valve core, the pulling pressure sensor has a reading number so as to limit the displacement of the valve core by adjusting a ratchet wheel on one side of the micrometer caliper, which is far away from the pulling pressure sensor, and detect the electromagnetic force corresponding to the working air gap of the high-speed switch valve by the pulling pressure sensor.
Further, the micrometer screw is arranged as a straight micrometer screw.
Furthermore, a first nut for self-locking is arranged outside the joint of the valve core thimble and the pull pressure sensor;
and a second nut for self-locking is arranged outside the joint of the tension pressure sensor and the micrometer screw assembly.
Further, the heating device comprises a temperature sensor and a heater;
the heater is arranged on one side of the electromagnetic coil, the temperature sensor and the heater are respectively electrically connected with the central console, and the temperature sensor is used for detecting the ambient temperature of the electromagnetic coil and transmitting the temperature information to the central console;
the center console is used for controlling the on-off of the heater so as to control the ambient temperature of the electromagnetic coil through the heater.
Furthermore, the valve core testing device provided by the invention also comprises a transparent cover;
the transparent cover is sleeved outside the valve core, the magnetism isolating pipe, the moving iron, the fixed iron and the electromagnetic coil, and a connecting hole is formed in the position, corresponding to the valve core, of the transparent cover.
Further, the center console comprises a controller, a storage and a display;
the controller is respectively electrically connected with the storage and the display, and is used for respectively transmitting the coil turns, the relative working air gap position, the working air gap size of the high-speed switch valve, the electromagnetic force size, the coil voltage, the coil current and the movement distance, the speed and the acceleration information of the valve core of the electromagnetic coil assembly to the storage and the display so as to be stored by the storage and displayed by the display.
The invention provides a valve core testing device, which is used for a high-speed switch valve and comprises: the device comprises a base, a laser displacement detection device, an electromagnetic coil assembly, a heating device, a connection sensing assembly, a micrometer caliper assembly, a current sensor and a central console; the solenoid coil assembly is internally provided with a valve core, and the micrometer screw gauge assembly is used for limiting the displacement of the valve core so as to detect the electromagnetic force corresponding to a working air gap of the high-speed switch valve by connecting the sensing assembly; the electromagnetic coil assembly is positioned between the laser displacement detection device and the micrometer screw assembly, and the laser displacement detection device is used for detecting the movement distance, the speed and the acceleration of the valve core; the heating device is electrically connected with the central console, and the central console is used for controlling the temperature of the ambient environment where the electromagnetic coil assembly is located through the heating device and storing the temperature information into the central console; the current sensor is electrically connected with the central console, and the central console is used for detecting the coil voltage and the coil current of the electromagnetic coil assembly through the current sensor and storing the information of the coil voltage and the coil current into the central console; the central console is pre-stored with the coil turns of the electromagnetic coil assembly, and stores the relative working air gap position of the electromagnetic coil assembly, the working air gap size of the high-speed switch valve, the size of electromagnetic force, coil voltage, coil current and the movement distance, speed and acceleration information of the valve core according to the coil turns; the central console is used for obtaining the response time of the valve core through the starting time of the displacement of the valve core and the starting time of the current passing through the electromagnetic coil assembly, and storing the response time into the central console; the technical problems that the valve core detection suspension is not easy to operate, the electromagnetic force of the valve core cannot be detected dynamically and the detection result is single in the prior art are solved; the electromagnetic force of the valve core under different temperatures, different working air gaps, different electrifying voltages and different coil turns can be measured, and the influence of the position change of the electromagnetic coil relative to the working air gap on the electromagnetic force can be measured; the motion distance, the speed and the acceleration of the valve element under each working condition are measured, and the response time of the valve element after the electromagnetic coil is electrified is measured, so that each characteristic of the valve element in the high-speed switch valve can be comprehensively researched, and the high-speed switch valve is more practical.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic overall structural diagram of a valve core testing device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a valve core testing apparatus according to an embodiment of the present invention at a first viewing angle;
FIG. 3 is a schematic view of a partial structure of a valve core testing device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a solenoid coil assembly of a valve core testing apparatus according to an embodiment of the present invention.
Icon: 100-a base; 101-a first elongated trapezoidal aperture; 102-a second elongated trapezoidal aperture; 103-a third elongated trapezoidal aperture; 200-laser displacement detection means; 201-laser displacement sensor; 202-second jackscrew; 203-laser displacement support; 300-a solenoid coil assembly; 301-solenoid carrier; 302-a valve core; 303-magnetism isolating pipe; 304-moving iron; 305-fixed iron; 306-an electromagnetic coil; 307-magnetism isolating pipe pressure plate; 308-solenoid position adjustment; 309-electromagnetic coil adjusting part; 400-a heating device; 401-temperature sensor; 402-a heater; 500-connecting a sensing component; 501-valve core thimble; 502-pull pressure sensor; 600-micrometer screw assembly; 601-micrometer screw gauge; 602-third jackscrew; 603-micrometer screw support; 700-transparent cover.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a schematic overall structural diagram of a valve core testing device provided in this embodiment; wherein the electromagnetic coil assembly 300 is positioned between the laser displacement detection device 200 and the micrometer screw assembly 600.
Fig. 2 is a schematic structural diagram of the valve core testing apparatus provided in this embodiment at a first viewing angle; wherein the first viewing angle is along the front view of the electromagnetic coil assembly 300, the laser displacement detection device 200 and the micrometer screw assembly 600.
Fig. 3 is a schematic partial structural view of the valve core testing apparatus provided in this embodiment; the micrometer screw assembly 600 includes a micrometer screw 601, a third screw 602, and a micrometer screw support 603.
Fig. 4 is a schematic structural diagram of a solenoid coil assembly of the valve core testing apparatus provided in this embodiment; the fixed iron 305 is sleeved outside the valve element 302, the moving iron 304 abuts against the valve element 302, and one end of the valve element 302, which is far away from the moving iron 304, is connected to the connection sensing assembly 500.
As shown in fig. 1 to 4, the present embodiment provides a valve core testing apparatus for a high-speed switching valve, including: the device comprises a base 100, a laser displacement detection device 200, an electromagnetic coil assembly 300, a heating device 400, a connection sensing assembly 500, a micrometer screw assembly 600, a current sensor and a central console; the laser displacement detection device 200, the electromagnetic coil assembly 300, the heating device 400, the connection sensing assembly 500 and the micrometer screw assembly 600 are all arranged on the base 100; a valve core 302 is arranged in the electromagnetic coil assembly 300, the valve core 302 is connected with the micrometer screw gauge assembly 600 through the connecting sensing assembly 500, the micrometer screw gauge assembly 600 is used for limiting the displacement of the valve core 302 so as to detect the size of electromagnetic force corresponding to a working air gap of the high-speed switch valve through the connecting sensing assembly 500, the connecting sensing assembly 500 is electrically connected with a central console, and the central console is used for storing the position of the electromagnetic coil assembly 300 relative to the working air gap, the size of the working air gap and the size of the electromagnetic force; the electromagnetic coil assembly 300 is positioned between the laser displacement detection device 200 and the micrometer screw assembly 600, the laser displacement detection device 200 is used for detecting the movement distance, the speed and the acceleration of the valve core 302, the laser displacement detection device 200 is electrically connected with a central console, and the central console is used for storing the information of the movement distance, the speed and the acceleration of the valve core 302; the heating device 400 is arranged on one side of the electromagnetic coil assembly 300, and the heating device 400 is electrically connected with a center console, wherein the center console is used for controlling the temperature of the surrounding environment where the electromagnetic coil assembly 300 is located through the heating device 400 and storing the temperature information into the center console; the current sensor is arranged in the electromagnetic coil assembly 300 and is electrically connected with the central console, and the central console is used for detecting the coil voltage and the coil current of the electromagnetic coil assembly 300 through the current sensor and storing the information of the coil voltage and the coil current into the central console; the central console prestores the number of turns of the coil of the electromagnetic coil assembly 300, and stores the relative working air gap position of the electromagnetic coil assembly 300, the size of the working air gap of the high-speed switch valve, the size of electromagnetic force, coil voltage, coil current and the movement distance, speed and acceleration information of the valve core 302 corresponding to the number of turns of the coil; the console is used for obtaining the response time of the valve core 302 through the starting time of the displacement of the valve core 302 and the starting time of the rising of the current passing through the electromagnetic coil assembly 300, and storing the response time into the console.
The laser displacement detection device 200 is detachably connected to the base 100, and specifically, the laser displacement detection device 200 is connected to the base 100 by bolts.
Preferably, the electromagnetic coil assembly 300 and the micrometer screw assembly 600 are detachably connected to the base 100, and particularly, the electromagnetic coil assembly 300 and the micrometer screw assembly 600 are connected to the base 100 by bolts.
Specifically, the energizing voltage of the electromagnetic coil assembly 300 is regulated by an external dc regulated power supply, or regulated by PWM pulse width modulation.
PWM, pulse width modulation, is a very efficient technique for controlling analog circuits using the digital output of a microprocessor, and is widely used in many fields ranging from measurement, communications to power control and conversion.
The number of turns of the coil of the solenoid coil assembly 300 needs to be changed by manufacturing coils with different numbers of turns, and when testing, information of different numbers of turns of the coil is transmitted to the center console.
The working temperature of the electromagnetic coil assembly 300 is adjusted by the heating device 400 and the central console together, a working temperature is input into the central console in advance so as to be heated to the temperature by the heating device 400, in addition, the heating device 400 also has a heat preservation function, when the temperature is lower than the temperature, the heating device 400 is started again to heat the electromagnetic coil assembly 300, so that the electromagnetic coil assembly 300 is always at the temperature value, the electromagnetic coil assembly 300 is electrified, and other data of the valve core 302 are tested; after the information of the temperature is detected and stored, a new working temperature is input, and the steps are repeated again, so that a plurality of groups of data of the valve core 302 at different temperatures can be detected.
Further, the center console comprises a controller, a storage and a display; the controller is electrically connected with the storage and the display respectively, and the controller is used for transmitting the coil turns, the relative working air gap position, the working air gap size of the high-speed switch valve, the electromagnetic force size, the coil voltage, the coil current and the movement distance, the speed and the acceleration information of the valve core 302 of the electromagnetic coil assembly 300 to the storage and the display respectively so as to be stored by the storage and displayed by the display.
The controller can be various, such as: a microcomputer, a micro control unit, or a PLC controller, etc., preferably, the controller is provided as a micro control unit.
A Micro Control Unit (MCU), also called a single-chip microcomputer or a single-chip microcomputer, properly reduces the frequency and specification of a central processing Unit, and integrates peripheral interfaces such as a memory, a counter, a USB, an a/D conversion, a UART, a PLC, a DMA, and the like, even an LCD driving circuit, on a single chip to form a chip-level computer, which is used for different combined control in different application occasions.
The display may be a touch screen or a display screen, preferably a touch screen, so that control information can be input to the controller through the touch screen.
The case testing arrangement that this embodiment provided for high-speed ooff valve includes: the device comprises a base 100, a laser displacement detection device 200, an electromagnetic coil assembly 300, a heating device 400, a connection sensing assembly 500, a micrometer screw assembly 600, a current sensor and a central console; the solenoid coil assembly 300 is internally provided with a valve core 302, and the micrometer screw assembly 600 is used for limiting the displacement of the valve core 302 so as to detect the magnitude of electromagnetic force corresponding to a working air gap of the high-speed switching valve through the connection sensing assembly 500; the electromagnetic coil assembly 300 is positioned between the laser displacement detection device 200 and the micrometer screw assembly 600, and the laser displacement detection device 200 is used for detecting the movement distance, the speed and the acceleration of the valve core 302; the heating device 400 is electrically connected with a center console, and the center console is used for controlling the temperature of the surrounding environment where the electromagnetic coil assembly 300 is located through the heating device 400 and storing the temperature information into the center console; the current sensor is electrically connected with the central console, and the central console is used for detecting the coil voltage and the coil current of the electromagnetic coil assembly 300 through the current sensor and storing the information of the coil voltage and the coil current into the central console; the central console prestores the number of turns of the coil of the electromagnetic coil assembly 300, and stores the relative working air gap position of the electromagnetic coil assembly 300, the size of the working air gap of the high-speed switch valve, the size of electromagnetic force, coil voltage, coil current and the movement distance, speed and acceleration information of the valve core 302 corresponding to the number of turns of the coil; the center console is used for obtaining the response time of the valve core 302 through the starting time of the displacement of the valve core 302 and the starting time of the current passing through the electromagnetic coil assembly 300, and storing the response time into the center console; the technical problems that the valve core 302 is difficult to operate in detection and suspension and cannot detect the electromagnetic force of the valve core 302 in a dynamic state and the detection result is single in the prior art are solved; the electromagnetic force on the valve core 302 under different temperatures, different working air gaps, different electrifying voltages and different coil turns can be measured, and the influence of the position change of the electromagnetic coil 306 relative to the working air gaps on the electromagnetic force can be measured; the moving distance, the speed and the acceleration of the valve core 302 under various working conditions, and the response time of the valve core 302 after the electromagnetic coil 306 is electrified are measured, so that various characteristics of the valve core 302 in the high-speed switch valve can be studied more comprehensively, and the high-speed switch valve is more practical.
On the basis of the above embodiment, further, the electromagnetic coil assembly 300 includes: the solenoid valve comprises a solenoid coil support 301, a valve core 302, a magnetism isolating pipe 303, a first jackscrew, a moving iron 304, a fixed iron 305, a solenoid coil 306, a magnetism isolating pipe pressure plate 307, a solenoid coil position adjusting part 308 and a solenoid coil adjusting part 309; the fixed iron 305 is sleeved outside the valve core 302, the moving iron 304 abuts against the valve core 302, one end, far away from the moving iron 304, of the valve core 302 is connected with the connection sensing assembly 500, the electromagnetic coil 306 is installed on the electromagnetic coil support 301 through a first jackscrew, the base 100 is provided with a first long trapezoidal hole 101, and the electromagnetic coil support 301 is connected with the base 100 through the first long trapezoidal hole 101 so as to slide relative to the base 100 along the first long trapezoidal hole 101 and be used for adjusting the coaxiality of the valve core 302 and the connection sensing assembly 500; the magnetism isolating pipe 303 is arranged on one side of the moving iron 304, which is far away from the valve core 302, and is connected with the moving iron 304, and the magnetism isolating pipe pressure plate 307 is arranged on one side of the electromagnetic coil support 301, which is close to the connection sensing assembly 500, and is connected with the electromagnetic coil support 301; the electromagnetic coil position adjusting part 308 is arranged inside the electromagnetic coil 306 and is used for adjusting the position of the electromagnetic coil 306 relative to the working air gap position of the high-speed switch valve; the solenoid adjusting portions 309 are provided on both sides of the outside for centering adjustment of the solenoid 306 to accommodate the solenoids 306 of different diameters.
Preferably, solenoid position adjustment portion 308 is a solenoid position adjustment screw, which is rotated relative to solenoid carrier 301 to move the position of solenoid 306, thereby adjusting the position of solenoid 306 relative to the position of the high speed switching valve working air gap.
Preferably, the electromagnetic coil adjusting part 309 is an electromagnetic coil fastening screw, and the electromagnetic coil fastening screws are respectively located at two sides of the electromagnetic coil 306 in the diameter direction, so that the diameter of the electromagnetic coil 306 is adjusted through the two electromagnetic coil fastening screws; specifically, the electromagnetic coil 306 diameter described above is the apparent diameter rather than the diameter of the copper wire inside the electromagnetic coil 306.
Further, the laser displacement detection device 200 comprises a laser displacement sensor 201, a second jackscrew 202 and a laser displacement support 203; the laser displacement sensor 201 is installed on the laser displacement support 203 through the second jackscrew 202, the base 100 is provided with a second long trapezoidal hole 102, the laser displacement support 203 is connected with the base 100 through the second long trapezoidal hole 102, a moving iron 304 observation hole is opened on the magnetism isolating pipe 303, the laser displacement support 203 slides relative to the base 100 along the second long trapezoidal hole 102, so that the infrared rays emitted by the laser displacement sensor 201 irradiate to the moving iron 304 through the moving iron 304 observation hole.
The laser displacement sensor 201 is a sensor for measuring by using a laser technique, and can measure precise geometric measurements such as displacement, thickness, vibration, distance, diameter, and the like.
In addition, the laser displacement sensor 201 may be a transposed infrared displacement sensor, a visible light displacement sensor, or the like.
Further, the connection sensing assembly 500 includes a valve core thimble 501 and a pull pressure sensor 502; the valve core thimble 501 is connected with a pull pressure sensor 502, one end of the pull pressure sensor 502 far away from the valve core thimble 501 is connected with the micrometer caliper assembly 600, and the valve core thimble 501 can be abutted against the valve core 302.
The valve core thimble 501 and the pull pressure sensor 502 are connected by screw threads.
Further, the micrometer screw assembly 600 comprises a micrometer screw 601, a third screw 602 and a micrometer screw support 603; the micrometer screw 601 is mounted on a micrometer screw support 603 through a third jackscrew 602, the base 100 is provided with a third elongated trapezoidal hole 103, and the micrometer screw support 603 is connected with the base 100 through the third elongated trapezoidal hole 103, so that the micrometer screw support 603 slides relative to the base 100 along the third elongated trapezoidal hole 103; when the spool thimble 501 contacts the spool 302, the pull pressure sensor 502 has a scale to limit the displacement of the spool 302 by adjusting the ratchet on the side of the micrometer 601 away from the pull pressure sensor 502, so as to detect the magnitude of the electromagnetic force corresponding to the working air gap of the high-speed switching valve by the pull pressure sensor 502.
Specifically, the valve core thimble 501 is connected with a threaded hole on the pull pressure sensor 502 through a thread at the tail part, and another threaded hole on the pull pressure sensor 502 is connected with a measuring rod on the micrometer screw 601.
Specifically, since the micrometer 601 can limit the displacement of the valve element 302, the indication of the pull pressure sensor 502 is zero, when the electromagnetic coil 306 is energized, the moving iron 304 will drive the valve element 302 to move, so that the pull pressure sensor 502 has a pull or press force, and the indication of the pull pressure sensor 502 displays the magnitude of the electromagnetic force.
Further, the micrometer screw 601 is configured as a straight micrometer screw.
The straight-moving micrometer caliper is adopted instead of a common micrometer caliper, and the ratchet wheel adjusting device has the advantages that the measuring rod cannot rotate along with the ratchet wheel adjusting, so that the pressure sensor 502 and the valve core thimble 501 cannot rotate along with the ratchet wheel adjusting device, machining precision of the pressure sensor 502 and the valve core thimble 501 cannot influence a measuring result, and measuring accuracy is improved.
Further, a first nut for self-locking is arranged outside the joint of the valve core thimble 501 and the pull pressure sensor 502; and a second nut for self-locking is arranged outside the joint of the tension and pressure sensor 502 and the micrometer screw assembly 600.
Preferably, first nut and second nut all adopt hexagon nut, carry out the auto-lock through hexagon nut, prevent to drop.
Further, the heating device 400 includes a temperature sensor 401 and a heater 402; the heater 402 is arranged at one side of the electromagnetic coil 306, the temperature sensor 401 and the heater 402 are respectively electrically connected with the center console, and the temperature sensor 401 is used for detecting the ambient temperature of the electromagnetic coil 306 and transmitting the temperature information to the center console;
the console is used to control the on/off of the heater 402 to control the temperature of the ambient environment where the electromagnetic coil 306 is located through the heater 402.
Further, the valve core testing device provided by the embodiment further comprises a transparent cover 700; the transparent cover 700 covers the valve core 302, the magnetism isolating pipe 303, the moving iron 304, the fixed iron 305 and the electromagnetic coil 306, and a connecting hole is formed in the position of the transparent cover 700 corresponding to the valve core 302.
The laser displacement sensor 201 can penetrate through the transparent cover 700 and the moving iron 304 observation hole on the magnetism isolating pipe 303, and finally irradiates the moving iron 304.
The transparent cover 700 is removably attached, preferably by screws, to the base 100 of the electromagnetic coil 306.
The valve core testing device provided by the embodiment specifically forms a moving system inside the valve core 302 through the moving iron 304, the fixed iron 305 and the electromagnetic coil 306, and can detect the displacement and the speed of the valve core 302 through the laser displacement sensor 201 aiming at different coil turns of the electromagnetic coil 306 and different direct electromagnetic coils 306, and can detect the magnitude of the electromagnetic force through the matching use of the valve core thimble 501, the pull pressure sensor 502 and the micrometer screw 601, and finally can store data through the controller, the storage and the display of the center console, and is convenient to check, so that the design is more complete and more practical.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A case testing arrangement for high speed switching valve, characterized by, includes: the device comprises a base, a laser displacement detection device, an electromagnetic coil assembly, a heating device, a connection sensing assembly, a micrometer caliper assembly, a current sensor and a central console;
the laser displacement detection device, the electromagnetic coil assembly, the heating device, the connection sensing assembly and the micrometer screw assembly are all arranged on the base;
the solenoid coil assembly is internally provided with a valve core, the valve core is connected with the micrometer caliper assembly through the connection sensing assembly, the micrometer caliper assembly is used for limiting the displacement of the valve core so as to detect the electromagnetic force corresponding to the working air gap of the high-speed switch valve through the connection sensing assembly, the connection sensing assembly is electrically connected with the central console, and the central console is used for storing the position of the solenoid coil assembly relative to the working air gap, the size of the working air gap and the size of the electromagnetic force;
the electromagnetic coil assembly is positioned between the laser displacement detection device and the micrometer screw assembly, the laser displacement detection device is used for detecting the movement distance, the speed and the acceleration of the valve core, the laser displacement detection device is electrically connected with the central console, and the central console is used for storing the information of the movement distance, the speed and the acceleration of the valve core;
the heating device is arranged on one side of the electromagnetic coil assembly and is electrically connected with the center console, and the center console is used for controlling the temperature of the ambient environment where the electromagnetic coil assembly is located through the heating device and storing the temperature information into the center console;
the current sensor is arranged in the electromagnetic coil assembly and is electrically connected with the center console, and the center console is used for detecting the coil voltage and the coil current of the electromagnetic coil assembly through the current sensor and storing the information of the coil voltage and the coil current into the center console;
the central console is pre-stored with the number of turns of the coil of the electromagnetic coil assembly, and stores the relative working air gap position of the electromagnetic coil assembly, the size of the working air gap of the high-speed switch valve, the size of electromagnetic force, coil voltage, coil current and the movement distance, speed and acceleration information of the valve core according to the number of turns of the coil;
the central console is used for obtaining the response time of the valve core through the starting time of the valve core displacement and the starting time of the current passing through the electromagnetic coil assembly, and storing the response time into the central console;
the electromagnetic coil assembly comprises an electromagnetic coil, and the heating device comprises a temperature sensor and a heater;
the heater is arranged on one side of the electromagnetic coil, the temperature sensor and the heater are respectively electrically connected with the center console, and the temperature sensor is used for detecting the ambient temperature of the electromagnetic coil and transmitting the temperature information to the center console;
the center console is used for controlling the on-off of the heater so as to control the ambient temperature of the electromagnetic coil through the heater;
the solenoid coil assembly includes a valve spool; the connection sensing assembly comprises a valve core thimble and a pull pressure sensor;
the valve core thimble is connected with the pull pressure sensor, one end of the pull pressure sensor, which is far away from the valve core thimble, is connected with the micrometer caliper assembly, and the valve core thimble can be abutted against the valve core;
the micrometer screw assembly comprises a micrometer screw, a third jackscrew and a micrometer screw support;
the micrometer screw is arranged on the micrometer screw support through the third jackscrew, the base is provided with a third long trapezoidal hole, and the micrometer screw support is connected with the base through the third long trapezoidal hole so that the micrometer screw support slides relative to the base along the third long trapezoidal hole;
when the valve core thimble is contacted with the valve core, the pulling pressure sensor has a reading number so as to limit the displacement of the valve core by adjusting a ratchet wheel on one side of the micrometer caliper, which is far away from the pulling pressure sensor, and detect the magnitude of the corresponding electromagnetic force of a working air gap of the high-speed switch valve through the pulling pressure sensor;
the micrometer caliper is a straight-in micrometer caliper.
2. The valve cartridge testing apparatus of claim 1, wherein the solenoid coil assembly further comprises: the electromagnetic coil comprises an electromagnetic coil support, a magnetism isolating pipe, a first jackscrew, a moving iron, a fixed iron, a magnetism isolating pipe pressure plate, an electromagnetic coil position adjusting part and an electromagnetic coil adjusting part;
the fixed iron is sleeved outside the valve core, the movable iron is abutted against the valve core, one end of the valve core, far away from the movable iron, is connected with the connection sensing assembly, the electromagnetic coil is installed on the electromagnetic coil support through the first jackscrew, the base is provided with a first long trapezoidal hole, and the electromagnetic coil support is connected with the base through the first long trapezoidal hole so as to slide relative to the base along the first long trapezoidal hole and be used for adjusting the coaxiality of the valve core and the connection sensing assembly;
the magnetism isolating pipe is arranged on one side of the moving iron, which is far away from the valve core, and is connected with the moving iron, and the magnetism isolating pipe pressing plate is arranged on one side of the electromagnetic coil support, which is close to the connection sensing assembly, and is connected with the electromagnetic coil support;
the electromagnetic coil position adjusting part is arranged in the electromagnetic coil and used for adjusting the position of the electromagnetic coil relative to the working air gap position of the high-speed switch valve;
the electromagnetic coil adjusting parts are arranged on two sides of the outer part and used for centering adjustment on the electromagnetic coil so as to adapt to electromagnetic coils with different diameters.
3. The valve core testing device according to claim 2, wherein the laser displacement detection device comprises a laser displacement sensor, a second jackscrew and a laser displacement support;
the laser displacement sensor is installed on the laser displacement support through the second jackscrew, the base is provided with a second long trapezoidal hole, the laser displacement support passes through the second long trapezoidal hole with the base is connected, the moving iron observation hole has been seted up on the magnetism isolating pipe, the laser displacement support along the second long trapezoidal hole for the base slides, so that the infrared ray that the laser displacement sensor transmitted passes through the moving iron observation hole shine to moving iron department.
4. The valve core testing device according to claim 1, wherein a first nut for self-locking is arranged outside the joint of the valve core thimble and the pull pressure sensor;
and a second nut for self-locking is arranged outside the joint of the tension pressure sensor and the micrometer screw assembly.
5. The valve cartridge testing apparatus of claim 2, further comprising a transparent cover;
the transparent cover is sleeved outside the valve core, the magnetism isolating pipe, the moving iron, the fixed iron and the electromagnetic coil, and a connecting hole is formed in the position, corresponding to the valve core, of the transparent cover.
6. The valve cartridge testing apparatus of claim 1, wherein the center console includes a controller, a reservoir, and a display;
the controller is respectively electrically connected with the storage and the display, and is used for respectively transmitting the coil turns, the relative working air gap position, the working air gap size of the high-speed switch valve, the electromagnetic force size, the coil voltage, the coil current and the movement distance, the speed and the acceleration information of the valve core to the storage and the display so as to be stored by the storage and displayed by the display.
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| CN110967179A (en) * | 2018-09-30 | 2020-04-07 | 上海汽车集团股份有限公司 | Electromagnetic valve performance testing device, system and method and judgment method |
| CN110261100A (en) * | 2019-07-15 | 2019-09-20 | 天津英创汇智汽车技术有限公司 | Valve detection method and valve detection system |
| CN110440976A (en) * | 2019-08-26 | 2019-11-12 | 华南理工大学 | A kind of high-speed electromagnetic valve electromagnetism force test device for brake system of car |
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| CN113049243B (en) * | 2019-12-27 | 2022-07-26 | 核动力运行研究所 | Method and device for testing response time of valve |
| CN111198343B (en) * | 2020-01-14 | 2022-05-24 | 河北工业大学 | Iron core magnetic characteristic measuring device |
| CN111855185B (en) * | 2020-07-30 | 2022-08-12 | 徐州徐工挖掘机械有限公司 | Model selection device and method for electromagnetic valve spring |
| CN111999581B (en) * | 2020-08-14 | 2021-04-30 | 燕山大学 | Device and method for testing electromagnetic characteristics of small-flow electromagnetic switch valve |
| CN112014672A (en) * | 2020-08-26 | 2020-12-01 | 安阳凯地电磁技术有限公司 | Electromagnet response tester |
| CN114034477B (en) * | 2021-11-09 | 2022-12-02 | 上海交通大学 | Micro-stroke magnetic lock type self-locking valve core motion state monitoring method |
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