CN109459588B - Quick calibrating device for thermal power generating unit rotating speed sensor - Google Patents
Quick calibrating device for thermal power generating unit rotating speed sensor Download PDFInfo
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- CN109459588B CN109459588B CN201811547945.XA CN201811547945A CN109459588B CN 109459588 B CN109459588 B CN 109459588B CN 201811547945 A CN201811547945 A CN 201811547945A CN 109459588 B CN109459588 B CN 109459588B
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- 238000004891 communication Methods 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 71
- 239000003381 stabilizer Substances 0.000 claims description 10
- 238000012795 verification Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 4
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
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Abstract
The invention provides a rapid calibrating device for a thermal power generating unit rotating speed sensor, and belongs to the field of sensor detection. The bottom surface of casing imbeds in the top surface of box, step motor driver and gear are located in the casing, step motor's output shaft and gear link, the sensor fixed slot is located on the top surface of casing, first sensor fixing bolt locates the side of sensor fixed slot, the side of casing is located to the sensor fixed hole, second sensor fixing bolt locates on the top surface of casing, the side of casing is located to first baffle hole, the second baffle hole is located on the top surface of casing, the touch-sensitive screen is located on the top surface of casing and is located casing one side, controller and touch-sensitive screen communication interface locate in the casing and be located the touch-sensitive screen below, control switch locates the upper portion of box side, active binding post row and passive binding post row are located on the top surface of casing, be provided with the signal hole on the gear, be close to the position of active binding post row on the box top surface is located to power source interface.
Description
Technical Field
The invention relates to the technical field of sensor detection, in particular to a rapid calibrating device for a thermal power generating unit rotating speed sensor.
Background
The rotating speed signal of the thermal power generating unit is the root of the control of the speed regulator, and the safe and stable operation of the speed regulator can be ensured only by obtaining stable and accurate rotating speed data of the rotating speed sensor of the thermal power generating unit. Whether the rotation speed of the rotation speed sensor is accurate or not is important to the operation of the thermal power unit, so that the rotation speed sensor of the thermal power unit is required to be checked regularly. Along with the rapid development of digital technology in the metering field, the demand of the thermal power generation industry for the rotating speed calibrating device of the rotating speed sensor is continuously increased, so that the intelligent rotating speed calibrating device for the rotating speed sensor of the thermal power generating unit is urgently required to be established to meet the demand of metering and guaranteeing tasks so as to rapidly and accurately complete the calibrating work of the rotating speed sensor.
Disclosure of Invention
The invention aims to provide a rapid calibrating device for a thermal power generating unit rotating speed sensor.
In order to solve the technical problems, the invention adopts the following technical scheme:
a quick calibrating installation for thermal power generating unit rotational speed sensor, it includes box, casing, step motor, gear, at least one first sensor fixing bolt, at least one sensor fixed slot, at least one second sensor fixing bolt, at least one sensor fixed orifices, at least one first baffle hole, at least one second baffle hole, touch-sensitive screen, control switch, active binding post row, passive binding post row, power interface, AC-DC converter, controller, step motor driver and touch-sensitive screen communication interface, wherein: the bottom surface of the shell is embedded into the top surface of the box body, the stepping motor driver and the gear are arranged in the shell, the output shaft of the stepping motor is connected with the gear, the sensor fixing groove is arranged on the top surface of the shell and is communicated with the inner cavity of the shell, the first sensor fixing bolt is arranged on the side surface of the sensor fixing groove, the sensor fixing hole is arranged on the side surface of the shell and is communicated with the inner cavity of the shell, the second sensor fixing bolt is arranged on the top surface of the shell and is communicated with the sensor fixing hole, the first baffle hole is arranged on the side surface of the shell and the bottom surface of the first baffle hole is higher than the top surface of the gear, a gap is reserved between the second baffle hole and the edge of the gear, the touch screen is arranged on the top surface of the box body and is positioned on one side of the shell, the controller and the touch screen communication interface are arranged in the box body and positioned below the touch screen, the control switch is arranged at the upper part of the side surface of the box body and positioned close to the shell, the active wiring terminal row and the passive wiring terminal row are arranged on the top surface of the box body and positioned close to the touch screen, the gear is provided with a signal hole, the power interface is arranged on the top surface of the box body and positioned close to the active wiring terminal row, the AC-DC converter is arranged on the inner side wall of the box body and positioned close to the power interface, the power interface is connected with the AC input end of the AC-DC converter, the control switch is arranged between the power interface and the AC input end of the AC-DC converter, the first DC output end of the AC-DC converter is connected with the power input end of the controller, the power input end of the touch screen and the first power input end of the stepping motor driver, the second direct current output end of the AC-DC converter is connected with the power input end of the active wiring terminal row and the second power input end of the stepping motor driver, the signal output end of the touch screen is connected with the signal input end of the controller through a touch screen communication interface, the signal output end of the rotating speed sensor of the active wiring terminal row and the signal output end of the rotating speed sensor of the passive wiring terminal row are connected with the signal input end of the controller, the signal output end of the controller is connected with the signal input end of the stepping motor driver, and the signal output end of the stepping motor driver is connected with the stepping motor.
Optionally, the shell is formed by connecting an upper shell and a lower shell, and the upper shell and the lower shell are connected through a shell fixing bolt.
Optionally, the number of the first sensor fixing bolts and the number of the sensor fixing grooves are the same, and the number of the second sensor fixing bolts and the number of the sensor fixing holes are the same.
Optionally, the number of the first sensor fixing bolts and the sensor fixing grooves is three, and the three sensor fixing grooves are uniformly distributed on the top surface of the shell and are communicated with the inner cavity of the shell.
Optionally, the number of second sensor fixing bolt and sensor fixed orifices is four, and four sensor fixed orifices evenly distributed are in the side of casing and communicate with the inner chamber of casing.
Optionally, two weight ports are further arranged on the gear, the signal port is rectangular, the two weight ports are square, and the centers of the two weight ports and the center line of the signal port form an isosceles triangle.
Optionally, two USB interfaces are provided on the side of the touch screen.
Optionally, the sensor fixing groove fixes the eddy current sensor, and the sensor fixing hole fixes the passive magneto-electric sensor.
Optionally, the AC-DC converter includes a transformer TR1, a diode D1, a voltage regulator U1, an electrolytic capacitor C1, a capacitor C2, an electrolytic capacitor C3, a capacitor C4, an electrolytic capacitor C5, a capacitor C6, an electrolytic capacitor C7, a capacitor C8, a voltage regulator U2, and a diode D2, wherein: the primary coil of the transformer TR1 is connected with a power interface, one end of the secondary coil of the transformer TR1 is connected with the positive electrode of a diode D1, the negative electrode of the diode D1 is connected with the positive electrode of an electrolytic capacitor C1, one end of a capacitor C2 and the VI end of a voltage regulator U1, the VO end of the voltage regulator U1 is connected with the positive electrode of an electrolytic capacitor C5 and one end of a capacitor C6, the negative electrode of the electrolytic capacitor C1, the other end of the capacitor C2, the GND end of the voltage regulator U1, the negative electrode of the electrolytic capacitor C5, the other end of the capacitor C6, the middle position of the secondary coil of the transformer TR1, the positive electrode of an electrolytic capacitor C3, one end of a capacitor C4, the positive electrode of an electrolytic capacitor C7, one end of a capacitor C8 and the GND end of the voltage regulator U2 are all grounded, the positive electrode of the diode D2 is connected with the negative electrode of the electrolytic capacitor C3, the other end of the capacitor C4 and the VI end of the voltage regulator U2 are all connected, and the other end of the voltage regulator U2 is connected with the negative electrode of the electrolytic capacitor C7 and the GND 8;
the controller comprises a single chip microcomputer U3, a pin 31 of the single chip microcomputer U3 is connected with a VO end of a voltage stabilizer U1, a pin 39, a pin 37, a pin 35 and a pin 33 of the single chip microcomputer U3 are respectively connected with a rotating speed sensor signal output end in a passive wiring terminal row, a public end in the passive wiring terminal row is connected with a public end of the rotating speed sensor, a pin 21, a pin 24 and a pin 27 of the single chip microcomputer U3 are respectively connected with a rotating speed sensor signal output end in an active wiring terminal row, a public end in the active wiring terminal row is connected with a public end of the rotating speed sensor, a power end in the active wiring terminal row is connected with a VO end of the voltage stabilizer U2, a public end in the active wiring terminal row and a public end in the passive wiring terminal row are respectively connected with a pin 28 of the single chip microcomputer U3, a pin 10 and a pin 11 of the single chip microcomputer U3 are respectively connected with a pin 2 and a pin 3 in a touch screen communication interface, a pin 5 in the touch screen communication interface is grounded, a pin 3, a pin 4, a pin 5 and a pin 6 of the single chip microcomputer U3 are respectively connected with a pin 9 of a stepper motor driver, a pin 8 and a pin 6 of the stepper motor driver, a pin 7 and a pin 6 of the stepper motor driver and a stepping motor driver, and a pin 10 of the stepper motor driver and a stepping motor 3 are respectively connected with a stepping motor 1 and a stepping motor 3, and a stepping motor 4 are connected with the stepping motor driver and the stepping motor 3.
The beneficial effects of the invention are as follows:
by arranging at least one first sensor fixing bolt, at least one sensor fixing groove, at least one second sensor fixing bolt, at least one sensor fixing hole, a touch screen, an active wiring terminal row, a passive wiring terminal row, an AC-DC converter, a controller, a stepping motor driver, a stepping motor, a touch screen communication interface and other structures, the invention provides a device capable of calibrating a rotating speed sensor, and the device can be used for simultaneously calibrating whether a plurality of rotating speed sensors are qualified or not, thereby not only meeting the calibrating requirements of most thermal power plants on the rotating speed sensor, but also greatly improving the calibrating efficiency. Therefore, compared with the background technology, the invention provides a device capable of rapidly and accurately finishing the verification work of the rotating speed sensor, and has the advantages of greatly improving the verification efficiency and the like.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a top view and a semi-sectional view of fig. 1.
Fig. 3 is a schematic diagram of the circuit connection relationship of the present invention.
Fig. 4 is a schematic diagram of the circuit composition of the AC-DC converter.
Fig. 5 is a schematic diagram of the connection relationship of the controller to other components.
Detailed Description
The invention will be described in further detail below with reference to the drawings and examples.
As shown in fig. 1 to 3, the quick calibrating device for a thermal power generating unit rotational speed sensor in this embodiment includes a case 1, a housing 2, a stepping motor 19, a gear 13, at least one first sensor fixing bolt 3, at least one sensor fixing groove 4, at least one second sensor fixing bolt 5, at least one sensor fixing hole 6, at least one first baffle hole 7, at least one second baffle hole 8, a touch screen 9, a control switch 10, an active terminal block 11, a passive terminal block 12, a power interface 14, an AC-DC converter 15, a controller 16, a stepping motor driver 17, and a touch screen communication interface 18, wherein: the bottom surface of the shell 2 is embedded in the top surface of the box body 1, the stepping motor 19, the stepping motor driver 17 and the gear 13 are arranged in the shell 2, an output shaft of the stepping motor 19 is connected with the gear 13, the sensor fixing groove 4 is arranged on the top surface of the shell 2 and communicated with the inner cavity of the shell 2, the first sensor fixing bolt 3 is arranged on the side surface of the sensor fixing groove 4, the sensor fixing hole 6 is arranged on the side surface of the shell 2 and communicated with the inner cavity of the shell 2, the second sensor fixing bolt 5 is arranged on the top surface of the shell 2 and communicated with the sensor fixing hole 6, the first baffle hole 7 is arranged on the side surface of the shell 2 and the bottom surface of the first baffle hole 7 is higher than the top surface of the gear 13, the second baffle hole 8 is arranged on the top surface of the shell 2 and a gap is reserved between the second baffle hole 8 and the edge of the gear 13, the touch screen 9 is arranged on the top surface of the shell 1 and is positioned on one side of the shell 2, the controller 16 and the touch screen communication interface 18 are arranged in the box body 1 and positioned below the touch screen 9, the control switch 10 is arranged at the upper part of the side surface of the box body 1 and positioned close to the shell 2, the active wiring terminal row 11 and the passive wiring terminal row 12 are arranged on the top surface of the box body 1 and positioned close to the touch screen 9, the gear 13 is provided with a signal hole 20, the power interface 14 is arranged on the top surface of the box body 1 and positioned close to the active wiring terminal row 11, the AC-DC converter 15 is arranged on the inner side wall of the box body 1 and positioned close to the power interface 14, the power interface 14 is connected with the AC input end of the AC-DC converter 15, the control switch 10 is arranged between the power interface 14 and the AC input end of the AC-DC converter 15, the first DC output end of the AC-DC converter 15 is connected with the power input end of the controller 16, the power input end of the touch screen 9 is connected with the first power input end of the stepper motor driver 17, the second direct current output end of the AC-DC converter 15 is connected with the power input end of the active wiring terminal block 11 and the second power input end of the stepper motor driver 17, the signal output end of the touch screen 9 is connected with the signal input end of the controller 16 through the touch screen communication interface 18, the signal output end of the rotation speed sensor of the active wiring terminal block 11 and the signal output end of the rotation speed sensor of the passive wiring terminal block 12 are connected with the signal input end of the controller 16, the signal output end of the controller 16 is connected with the signal input end of the stepper motor driver 17, and the signal output end of the stepper motor driver 17 is connected with the stepper motor 19.
Wherein, sensor fixed slot 4 and sensor fixed orifices 6 are used for placing the rotational speed sensor that waits to examine, and first sensor fixing bolt 3 and second sensor fixing bolt 5 are used for fixed rotational speed sensor of putting into sensor fixed slot 4 and sensor fixed orifices 6 respectively. The first baffle hole 7 and the second baffle hole 8 are used for inserting a baffle when detecting the rotation speed sensor, and the baffle is used for preventing the gear 13 from contacting with the rotation speed sensor to damage the rotation speed sensor during the rotation process of the gear 13. The touch screen 9 is used for human-computer interaction, such as for inputting a set rotational speed of the gear 13. The control switch 10 is used to control the operation of the whole device. The active terminal block 11 and the passive terminal block 12 are used to establish a connection between the rotational speed sensor to be tested and the controller 16. The power interface 14 is for connection to mains. The AC-DC converter 15 is configured to convert the utility power into 24V and-24V DC power, wherein a first DC output terminal of the AC-DC converter 15 outputs 24V DC power, and a second DC output terminal of the AC-DC converter 15 outputs-24V DC power. The controller 16 is used to control the overall device to work cooperatively. The stepper motor driver 17 is used for controlling the stepper motor 19 to act under the action of the controller 16. The touch screen communication interface 18 is used to establish a connection between the touch screen 9 and the controller 16. The touch screen communication interface 18 is an RS232 serial port.
In order to make the operation of assembling and disassembling the components in the housing 2 relatively simple and convenient, the housing 2 in this embodiment is formed by connecting an upper housing and a lower housing, which are connected by a housing fixing bolt 21.
In this embodiment, the number of the first sensor fixing bolts 3 and the sensor fixing grooves 4 is the same, and the number of the second sensor fixing bolts 5 and the sensor fixing holes 6 is the same. Specifically, the number of the first sensor fixing bolts 3 and the sensor fixing grooves 4 is three, and the three sensor fixing grooves 4 are uniformly distributed on the top surface of the shell 2 and are communicated with the inner cavity of the shell 2; the number of the second sensor fixing bolts 5 and the number of the sensor fixing holes 6 are four, and the four sensor fixing holes 6 are uniformly distributed on the side surface of the shell 2 and are communicated with the inner cavity of the shell 2; three groups of active wiring ports are arranged on the active wiring terminal block 11, and each group of active wiring ports comprises a signal output end (a signal end used for being inserted into an active rotation speed sensor), a common end (a common end used for being inserted into the active rotation speed sensor) and a power end (a power end used for being inserted into the active rotation speed sensor); the passive terminal block 12 has four sets of passive terminal ports, each set of passive terminal ports including a signal output end (a signal end for inserting a passive tachometer) and a common end (a common end for inserting a passive tachometer). Through the arrangement, the invention has attractive overall structure, and can detect three active rotating speed sensors and four passive rotating speed sensors at the same time, thereby not only detecting various rotating speed sensors, but also improving the detecting efficiency.
Optionally, the gear 13 is further provided with two weight ports 22, the signal port 20 is rectangular, the two weight ports 22 are square, and the centers of the two weight ports 22 and the center line of the signal port 20 form an isosceles triangle. By this arrangement, the dynamic balance of the gear 13 in the rotating state can be maintained, and the gear 13 is prevented from tilting during rotation.
Optionally, two USB interfaces 23 are provided on the side of the touch screen 9, one for connecting to a printer and one for connecting to a memory or the like, so that the touch screen 9 can communicate with an external device. The invention can automatically record and store experimental data and detection reports by connecting the memory, and can print detection reports by connecting the printer, thereby greatly reducing manual labor.
In this embodiment, the sensor fixing groove 4 fixes the eddy current sensor, and the sensor fixing hole 6 fixes the passive magneto-electric sensor, so that the present invention can simultaneously verify at least one eddy current sensor and at least one passive magneto-electric sensor.
As shown in fig. 4 and 5, the AC-DC converter 15 includes a transformer TR1 (TRAN-2P 3S), a diode D1, a voltage stabilizer U1 (7824), an electrolytic capacitor C1, a capacitor C2, an electrolytic capacitor C3, a capacitor C4, an electrolytic capacitor C5, a capacitor C6, an electrolytic capacitor C7, a capacitor C8, a voltage stabilizer U2 (7924), and a diode D2, wherein: the primary coil of the transformer TR1 is connected with the power interface 14, one end of the secondary coil of the transformer TR1 is connected with the positive electrode of the diode D1, the negative electrode of the diode D1 is connected with the positive electrode of the electrolytic capacitor C1, one end of the capacitor C2 and the VI end of the voltage regulator U1, the VO end of the voltage regulator U1 is connected with the positive electrode of the electrolytic capacitor C5 and one end of the capacitor C6, the negative electrode of the electrolytic capacitor C1, the other end of the capacitor C2, the GND end of the voltage regulator U1, the negative electrode of the electrolytic capacitor C5, the other end of the capacitor C6, the middle position of the secondary coil of the transformer TR1, the positive electrode of the electrolytic capacitor C3, one end of the capacitor C4, the positive electrode of the electrolytic capacitor C7, one end of the capacitor C8 and the GND end of the voltage regulator U2 are all grounded, the other end of the secondary coil of the transformer TR1 is connected with the negative electrode of the diode D2, the positive electrode of the diode D2 is connected with the negative electrode of the electrolytic capacitor C3, the other end of the capacitor C4 and the VI end of the voltage regulator U2 are all connected with the VO end of the capacitor C7 and the other end of the capacitor C8; the controller 16 comprises a singlechip U3 (AT 89C51RD 2), a pin 31 of the singlechip U3 is connected with a VO end of the voltage stabilizer U1, a pin 39, a pin 37, a pin 35 and a pin 33 (signal input ends of the controller 16) of the singlechip U3 are respectively and correspondingly connected with rotating speed sensor signal output ends (VN 4, VN5, VN6 and VN 7) in a passive wiring terminal row 12 (J1), a public end (COM) in the passive wiring terminal row 12 is connected with the public end of the rotating speed sensor, a pin 21, a pin 24 and a pin 27 (signal input ends of the controller 16) of the singlechip U3 are correspondingly connected with rotating speed sensor signal output ends (VN 1, VN2 and VN 3) in an active wiring terminal row 11, a public end (COM) in the active wiring terminal row 11 is connected with the public end of the rotating speed sensor, the power end in the active wiring terminal row 11 is connected with the VO end of the voltage stabilizer U2, the public end in the active wiring terminal row 11 and the public end in the passive wiring terminal row 12 are connected with the pin 28 of the single chip microcomputer U3, the pin 10 and the pin 11 (the signal input end of the controller 16) of the single chip microcomputer U3 are respectively connected with the pin 2 and the pin 3 in the touch screen communication interface 18 (J4), the pin 5 in the touch screen communication interface 18 is grounded, the pin 3, the pin 4, the pin 5 and the pin 6 (the signal output end of the controller 16) of the single chip microcomputer U3 are respectively connected with the pin 9, the pin 8, the pin 7 and the pin 6 (the signal input end of the stepping motor driver 17) of the stepping motor driver 17, the pin 10 (first power input terminal of the stepper motor driver 17) of the stepper motor driver 17 (J5) is connected to the VO terminal of the voltage regulator U1, the pin 1 (second power input terminal of the stepper motor driver 17) of the stepper motor driver 17 is connected to the VO terminal of the voltage regulator U2, and the pin 2, pin 3, pin 4 and pin 5 (signal output terminal of the stepper motor driver 17) of the stepper motor driver 17 are connected to the coil of the stepper motor 19, respectively.
For convenience of explanation, the method of using the present invention will be described below with reference to an active rotational speed sensor of the rotational speed sensor being an eddy current sensor, and a passive rotational speed sensor being a passive magneto-electric sensor.
The principle of the invention when detecting the active rotation speed sensor is as follows: when the signal hole 20 on the gear 13 rotates to the position of the active rotation speed sensor, the distance between the active rotation speed sensor and the signal hole 20 generates an abrupt change, at this time, the active rotation speed sensor generates a pulse signal every turn of the gear 13, the active rotation speed sensor inputs the generated pulse signal into the controller 16 through the active connection terminal row 11, and the controller 16 can calculate the rotation speed of the gear 13 detected by the active rotation speed sensor. Based on the principle, when the active rotation speed sensor is detected, firstly, a baffle plate is inserted into the first baffle plate hole 7, then the active rotation speed sensor is placed into the sensor fixing groove 4, and after the head of the active rotation speed sensor contacts the baffle plate (ensuring that the active rotation speed sensor is not damaged in the rotation process of the gear 13 due to touching the gear 13 after being inserted into the sensor fixing groove 4), the first sensor fixing bolt 3 is screwed; then, a signal end, a common end and a power end of the active rotating speed sensor are respectively inserted into a rotating speed sensor signal output end, a common end and a power end in the active wiring terminal block 11; next, the control switch 10 is turned on, the rotational speed of the gear 13 is set through the touch screen 9, and the set rotational speed is sent to the controller 16 through the touch screen communication interface 18, so that the controller 16 controls the stepping motor 19 to act through the stepping motor driver 17, at this time, the gear 13 starts to rotate, the active rotational speed sensor starts to detect and sends a detected pulse signal to the controller 16, the controller 16 calculates the rotational speed of the gear 13 detected by the active rotational speed sensor, and calculates an error between the rotational speed set by the gear 13 and the rotational speed detected by the active rotational speed sensor, so as to verify whether the active sensor is qualified.
The principle of the invention when verifying the passive rotation speed sensor is as follows: the passive rotation speed sensor is internally provided with a permanent magnet, when the gear 13 rotates, the gap between the gear 13 and the passive rotation speed sensor periodically changes, so that a sine-wave-like voltage signal is induced in a coil of the passive rotation speed sensor, and the frequency of the generated voltage signal is in direct proportion to the rotation speed of the gear 13, thereby being capable of being used for measuring the rotation speed of the gear. Based on the principle, when the passive rotation speed sensor is detected, firstly, a baffle plate is inserted into the second baffle plate hole 8, then the passive rotation speed sensor is placed into the sensor fixing hole 5, and after the head of the passive rotation speed sensor contacts the baffle plate (ensuring that the passive rotation speed sensor is not damaged in the rotation process of the gear 13 due to touching the gear 13 after being inserted into the sensor fixing hole 5), the second sensor fixing bolt 5 is screwed; then, the signal end and the common end of the passive rotation speed sensor are respectively inserted into the signal output end and the common end of the rotation speed sensor in the passive wiring terminal block 12; next, the control switch 10 is turned on, the rotating speed of the gear 13 is set through the touch screen 9, and the set rotating speed is sent to the controller 16 through the touch screen communication interface 18, so that the controller 16 controls the stepping motor 19 to act through the stepping motor driver 17, at this time, the gear 13 starts to rotate, the passive rotating speed sensor starts to detect and sends a detected voltage signal to the controller 16, the controller 16 calculates the rotating speed of the gear 13 detected by the passive rotating speed sensor, and calculates an error between the rotating speed set by the gear 13 and the rotating speed detected by the passive rotating speed sensor, so that whether the passive sensor is qualified is verified.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (7)
1. A quick calibrating device for thermal power generating unit rotation speed sensor, a serial communication port, including box (1), casing (2), step motor (19), gear (13), at least one first sensor fixing bolt (3), at least one sensor fixed slot (4), at least one second sensor fixing bolt (5), at least one sensor fixed hole (6), at least one first baffle hole (7), at least one second baffle hole (8), touch-sensitive screen (9), control switch (10), active binding post row (11), passive binding post row (12), power source (14), AC-DC converter (15), controller (16), step motor driver (17) and touch-sensitive screen communication interface (18), wherein:
the bottom surface of the shell (2) is embedded into the top surface of the box body (1), the stepping motor (19), the stepping motor driver (17) and the gear (13) are arranged in the shell (2), an output shaft of the stepping motor (19) is connected with the gear (13), the sensor fixing groove (4) is arranged on the top surface of the shell (2) and is communicated with an inner cavity of the shell (2), the first sensor fixing bolt (3) is arranged on the side surface of the sensor fixing groove (4), the sensor fixing hole (6) is arranged on the side surface of the shell (2) and is communicated with the inner cavity of the shell (2), the second sensor fixing bolt (5) is arranged on the top surface of the shell (2) and is communicated with the sensor fixing hole (6), the first baffle hole (7) is arranged on the side surface of the shell (2) and the bottom surface of the first baffle hole (7) is higher than the top surface of the gear (13), the second baffle hole (8) is arranged on the top surface of the shell (2) and is communicated with the inner cavity of the gear (13), the second baffle hole (8) is arranged between the edge of the second baffle hole (13) and the edge of the gear (13) and is arranged on the top surface of the shell (1) and is arranged on the lower side surface of the shell (1) and the control box (18), the control switch (10) is arranged at the upper part of the side surface of the box body (1) and is positioned close to the shell (2), the active wiring terminal row (11) and the passive wiring terminal row (12) are arranged on the top surface of the box body (1) and are positioned close to the touch screen (9), the gear (13) is provided with a signal hole (20), the power interface (14) is arranged at the position close to the active wiring terminal row (11) on the top surface of the box body (1), the AC-DC converter (15) is arranged on the inner side wall of the box body (1) and is positioned close to the power interface (14), the power interface (14) is connected with the AC input end of the AC-DC converter (15), the control switch (10) is arranged between the power interface (14) and the AC input end of the AC-DC converter (15), the first DC output end of the AC-DC converter (15) is connected with the power input end of the controller (16), the power input end of the touch screen (9) and the first power input end of the stepping motor driver (17), the second DC output end of the AC-DC converter (15) is connected with the power input end of the touch screen (17) through the second power input end of the touch screen (16), the signal output end of the rotation speed sensor of the active wiring terminal row (11) and the signal output end of the rotation speed sensor of the passive wiring terminal row (12) are connected with the signal input end of the controller (16), the signal output end of the controller (16) is connected with the signal input end of the stepping motor driver (17), and the signal output end of the stepping motor driver (17) is connected with the stepping motor (19);
the shell (2) is formed by connecting an upper shell and a lower shell, and the upper shell is connected with the lower shell through a shell fixing bolt (21);
the number of the first sensor fixing bolts (3) and the number of the sensor fixing grooves (4) are the same, and the number of the second sensor fixing bolts (5) and the number of the sensor fixing holes (6) are the same.
2. The quick calibrating device for a thermal power generating unit rotating speed sensor according to claim 1, wherein the number of the first sensor fixing bolts (3) and the sensor fixing grooves (4) is three, and the three sensor fixing grooves (4) are uniformly distributed on the top surface of the shell (2) and are communicated with the inner cavity of the shell (2).
3. The quick calibrating device for the thermal power generating unit rotating speed sensor according to claim 1, wherein the number of the second sensor fixing bolts (5) and the sensor fixing holes (6) is four, and the four sensor fixing holes (6) are uniformly distributed on the side face of the shell (2) and are communicated with the inner cavity of the shell (2).
4. The quick calibrating device for the thermal power generating unit rotating speed sensor according to claim 1, wherein the gear (13) is further provided with two weight ports (22), the signal port (20) is rectangular, the two weight ports (22) are square, and an isosceles triangle is formed by connecting the centers of the two weight ports (22) with the center of the signal port (20).
5. The rapid verification device for a thermal power generating unit rotation speed sensor according to claim 1, wherein two USB interfaces (23) are arranged on the side face of the touch screen (9).
6. The rapid verification device for a thermal power generating unit rotation speed sensor according to claim 1, wherein a sensor fixing groove (4) is used for fixing an eddy current sensor, and a sensor fixing hole (6) is used for fixing a passive magneto-electric sensor.
7. The rapid verification device for a thermal power generating unit rotation speed sensor according to claim 1, wherein the AC-DC converter (15) comprises a transformer TR1, a diode D1, a voltage regulator U1, an electrolytic capacitor C1, a capacitor C2, an electrolytic capacitor C3, a capacitor C4, an electrolytic capacitor C5, a capacitor C6, an electrolytic capacitor C7, a capacitor C8, a voltage regulator U2, and a diode D2, wherein: the primary coil of the transformer TR1 is connected with a power interface (14), one end of the secondary coil of the transformer TR1 is connected with the positive electrode of a diode D1, the negative electrode of the diode D1 is connected with the positive electrode of an electrolytic capacitor C1, one end of a capacitor C2 and the VI end of a voltage regulator U1, the VO end of the voltage regulator U1 is connected with the positive electrode of an electrolytic capacitor C5 and one end of a capacitor C6, the negative electrode of the electrolytic capacitor C1, the other end of the capacitor C2, the GND end of the voltage regulator U1, the negative electrode of the electrolytic capacitor C5, the other end of the capacitor C6, the middle position of the secondary coil of the transformer TR1, the positive electrode of an electrolytic capacitor C3, one end of a capacitor C4, the positive electrode of an electrolytic capacitor C7, one end of a capacitor C8 and the GND end of the voltage regulator U2 are all grounded, the positive electrode of the diode D2 is connected with the negative electrode of the electrolytic capacitor C3, the other end of the capacitor C4 and the VI end of the voltage regulator U2 are all connected with the negative electrode of the electrolytic capacitor C7 and the VO end of the capacitor C8;
the controller (16) comprises a singlechip U3, a pin 31 of the singlechip U3 is connected with a VO end of the voltage stabilizer U1, a pin 39, a pin 37, a pin 35 and a pin 33 of the singlechip U3 are respectively and correspondingly connected with a signal output end of a rotating speed sensor in a passive wiring terminal row (12), a public end in the passive wiring terminal row (12) is connected with a public end of the rotating speed sensor, a pin 21, a pin 24 and a pin 27 of the singlechip U3 are correspondingly connected with a signal output end of the rotating speed sensor in an active wiring terminal row (11), a public end in the active wiring terminal row (11) is connected with a public end of the rotating speed sensor, a power end in the active wiring terminal row (11) is connected with a VO end of the voltage stabilizer U2, the public end in the active wiring terminal row (11) and the public end in the passive wiring terminal row (12) are connected with a pin 28 of the single chip microcomputer U3, a pin 10 and a pin 11 of the single chip microcomputer U3 are respectively connected with a pin 2 and a pin 3 in the touch screen communication interface (18), a pin 5 in the touch screen communication interface (18) is grounded, a pin 3, a pin 4, a pin 5 and a pin 6 of the single chip microcomputer U3 are respectively connected with a pin 9, a pin 8, a pin 7 and a pin 6 of the stepper motor driver (17), a pin 10 of the stepper motor driver (17) is connected with a VO end of the voltage stabilizer U1, a pin 1 of the stepper motor driver (17) is connected with a VO end of the voltage stabilizer U2, and a pin 2, a pin 3 of the stepper motor driver (17), the pin 4 and the pin 5 are respectively connected with a coil of a stepping motor (19).
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| CN201811547945.XA CN109459588B (en) | 2018-12-18 | 2018-12-18 | Quick calibrating device for thermal power generating unit rotating speed sensor |
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| CN201811547945.XA CN109459588B (en) | 2018-12-18 | 2018-12-18 | Quick calibrating device for thermal power generating unit rotating speed sensor |
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| CN116840511A (en) * | 2023-06-27 | 2023-10-03 | 华能铜川照金煤电有限公司 | Rotating speed checking device |
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