CN107681635B - Intelligent control and protection device for oil well motor - Google Patents
Intelligent control and protection device for oil well motor Download PDFInfo
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- CN107681635B CN107681635B CN201710905002.9A CN201710905002A CN107681635B CN 107681635 B CN107681635 B CN 107681635B CN 201710905002 A CN201710905002 A CN 201710905002A CN 107681635 B CN107681635 B CN 107681635B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0822—Integrated protection, motor control centres
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
- H02H7/0844—Fail safe control, e.g. by comparing control signal and controlled current, isolating motor on commutation error
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Abstract
The invention relates to an intelligent control protection device of an oil well motor, which relates to oil well motor protection equipment and consists of a shell, a main control board and a power panel, wherein the front surface of the shell is provided with a key display board, the top surface of the shell is provided with an upper conductive board, the bottom surface of the shell is provided with a lower conductive board and a wiring terminal, the wiring terminal is externally connected with a start-stop button, a human body infrared sensor, an upper dead point sensor and a lower dead point sensor, and the main control board, the power panel and a vacuum switch are arranged in the shell: the device is convenient to install and simple to operate, and realizes integration; because the vacuum tube is adopted as the switching device of the vacuum switch, the vacuum switch has strong arc extinguishing capability, large breaking capability and long service life of the contact; because the electromagnetic drive of the vacuum switch adopts direct current excitation, the magnetic tape loss of the iron core is overcome, the energy consumption and the noise are reduced, and the cost of the iron core is reduced; the function is perfect.
Description
Technical Field
The invention relates to motor protection equipment for an oil well, in particular to an intelligent control protection device for an oil well motor.
Background
At present, the power sources of the oil well are all motors, and the motors comprise a beam pumping unit, a screw pump pumping unit and an electric submersible pump pumping unit. The control of the motor adopts a structure of a button, a contactor and a protector, so that the local start-stop control and the protection stop function are realized. There are a number of disadvantages and shortcomings with this control: firstly, the service life of the contact of the common contactor is not long enough, the electromagnetic coil is excited by alternating current, the power consumption is high, the heating quantity is high, and the contactor is easy to burn; secondly, the contactor and the protector are simply combined, the matching degree is not high, the occupied space is large, the wiring is complex, and the faults are many; the functions are single, and cannot meet various functional requirements of oil well production, such as functions of timing start-stop control, remote measurement of voltage line voltage and current three-phase current, remote reporting of shutdown state and shutdown reasons and the like of a motor, and the functions are all required by the oil field motor.
Disclosure of Invention
The invention provides an intelligent control and protection device for an oil well motor, which overcomes the defects of the prior art.
The intelligent oil well motor control protector consists of casing, main control board and power board, and has key display board in the front of the casing, upper conducting board in the top of the casing, lower conducting board and connecting terminal connected to the connecting terminal, L-shaped connecting lever, moving contact rod, contact rod circuit connected to the upper conducting board, contact rod, moving contact rod, fixed contact rod, and vacuum tube.
As a further improvement of the invention, the main control board consists of a power transformer T1, a rectifying module, a filtering module, a voltage stabilizing module 1, a voltage stabilizing module 2, a charging module, a rechargeable battery E1, a DC/DC isolation module, a signal processing module 1, a signal processing module 2, an A/D conversion module, a photoelectric isolation module, a microcontroller MCU, a clock chip DS12C877+, a GSM module, a driving module 1, a relay KA2 and sockets ZKJ-ZKJ 7, wherein the socket ZKJ is connected with the input end of the power transformer T1 and the input end of a voltage transformer TV 1; the output end of the power transformer T1 is connected with the input end of the rectifying module; the output end of the rectifying module is connected with the input end of the filtering module; the output end of the filtering module is connected with the input end of the voltage stabilizing module 1; the output end of the voltage stabilizing module 1 is connected with the input end of the voltage stabilizing module 2 and the DC/DC isolation module; the output end of the voltage stabilizing module 2 is connected with the input end of the charging module; the output end of the charging module is connected with the rechargeable battery E1; the output end of the voltage transformer TV1 is connected with the input end of the signal processing module 1; the socket ZKJ is connected with the input end of the signal processing module 2; the output ends of the signal processing module 1 and the signal processing module 2 are connected with the A/D conversion module; the A/D conversion module is connected with the microprocessor MCU; the socket ZKJ is connected with the photoelectric isolation module; the photoelectric isolation module is connected with the microprocessor MCU; the socket ZKJ is connected with the microprocessor MCU; the clock chip DS12C877+ is connected with the microprocessor MCU; the socket ZKJ is connected with the GSM module; the GSM module is connected with the microprocessor MCU; the socket ZKJ is connected with the output end of the relay KA 1; the socket ZKJ is connected with the output end of the relay KA 2; the input ends of the relays KA1 and KA2 are connected with the output end of the driving module 1; the input end of the driving module 1 is connected with the microprocessor MCU.
As a further improvement of the invention, the power panel is composed of a fuse FU1, diodes D1-D4, a capacitor C1 and sockets DYJ-DYJ, wherein the 1 end of the socket DYJ is connected with one end of the fuse FU1, and the other end of the fuse FU1 is connected with the 2 end of the socket DYJ and the connecting ends of the diodes D1 and D3; the end 2 of socket DYJ is connected to both the end 1 of socket DYJ and the end 1 of socket DYJ; the 2 end of the socket DYJ is connected with the connecting ends of the diodes D2 and D4; the connection ends of the diodes D3 and D4 are connected with the 1 end of the socket DYJ; the connection ends of the diodes D1 and D2 are connected with the 2 end of the socket DYJ; the 1 terminal of socket DYJ is connected to both the 1 terminal of capacitor C1 and the 1 terminal of socket DYJ; the terminal 2 of the socket DYJ is connected to both the other terminal of the capacitor C1 and the terminal 2 of the socket DYJ.
As a further improvement of the invention, the socket DYJ1 of the power panel is externally connected with an alternating current 380V power supply; the socket DYJ is connected with the socket ZKJ1 of the main control board through a flat cable; the socket DYJ is connected with the socket ZKJ2 of the main control board 2 through a flat cable; the socket DYJ is connected with the socket ZKJ3 of the main control board 2 through a flat cable; the electromagnetic coil consists of a starting coil, a maintaining coil, a diode D5 and plugs DXJ1 and DXJ2, and a socket DYJ is connected with the plug DXJ1 of the electromagnetic coil; socket DYJ is connected to plug DXJ2 of the solenoid; the socket ZKJ of the main control board is connected with the current transformer; the socket ZKJ is connected with a start-stop button, a human body infrared sensor, an upper dead point sensor and a lower dead point sensor; the socket ZKJ is connected with the socket AXJ1 of the key display panel through a flat cable; the socket ZKJ is connected to a GSM antenna.
As a further improvement of the invention, the key display panel consists of resistors R1-R6, a light-emitting diode D6, a diode D7, a triode V1, a buzzer Y1, a nixie tube, a keyboard interface chip BC7281BES, a driving module 2, a nixie tube, keys S1-S4 and a socket AXJ1, wherein the socket AXJ is connected with the interface chip BC7281BES, the cathode of the light-emitting diode D6 and one end of the resistor R2; the positive electrode of the light-emitting diode D6 is connected with the resistor R1; the other end of the resistor R1 is connected with the socket AXJ 1; the other end of the resistor R2 is connected with the base electrode of the triode V1; the emitter of the triode V1 is connected with the socket AXJ 1; the collector of the triode V1 is connected with the anode of the buzzer; the negative pole of the buzzer is grounded; the interface chip BC7281BES is connected with the driving module 2; the driving module 2 is connected with the nixie tube; the interface chip BC7281BES is connected with the resistors R3-R6; R3-R6 are respectively connected with keys S1-S4; the other ends of the keys S1-S4 are connected together and then connected with the cathode of the diode D7; the anode of the diode D7 is connected to the drive module 2.
The intelligent control and protection device for the oil well motor has the beneficial effects that:
(1) The device is convenient to install and simple to operate, realizes integration, is simple in wiring, only needs to be connected with a three-phase power supply, a local start-stop button, a GSM antenna, an upper branch point sensor, a lower branch point sensor and a human body infrared sensor which are connected to the beam pumping unit, and simultaneously organically integrates a vacuum switch, an electromagnetic mechanism and a circuit board, and is small in size and convenient to operate;
(2) Because the vacuum tube is adopted as the switching device of the vacuum switch, the vacuum switch has strong arc extinguishing capability, large breaking capability and long service life of the contact;
(3) Because the electromagnetic drive of the vacuum switch adopts direct current excitation, the magnetic tape loss of the iron core is overcome, the energy consumption and the noise are reduced, and the cost of the iron core is reduced;
(4) The functions are perfect: firstly, the timing start-stop function realizes intermittent pumping of the oil well; secondly, measuring and remotely reading the up-stroke current, the down-stroke current and the punching speed of the beam pumping unit, so that a report task of related data can be completed without a worker going to the site; thirdly, the remote and timely reporting function of the shutdown cause solves the problems that the shutdown of the oil well cannot be found in time, the fault cannot be processed in time, and the yield of the oil well is affected; fourthly, the remote start-stop function realizes the remote control of the oil well.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a bottom view of the present invention;
FIG. 4 is a schematic diagram of a vacuum switch according to the present invention;
FIG. 5 is a diagram of a power panel circuit of the present invention;
FIG. 6 is a diagram of the electromagnetic coil circuit configuration of the present invention;
FIG. 7 is a circuit diagram of a main control board according to the present invention;
fig. 8 is a circuit diagram of a key display panel according to the present invention.
Detailed Description
As shown in figure 1, the intelligent control protection device for the oil well motor comprises a shell 1, a main control board 2 and a power board 3, wherein a key display board 4 is arranged on the front surface of the shell 1, an upper conductive board 5 is arranged on the top surface of the shell 1, a lower conductive board 6 and a connecting terminal 7 (shown in figure 3) are arranged on the bottom surface of the shell 1, the connecting terminal 7 is externally connected with a start-stop button, a human body infrared sensor, an upper dead point sensor and a lower dead point sensor, the main control board 2, the power board 3 and a vacuum switch 8 (shown in figure 2) are arranged in the shell 1, the vacuum switch 8 is used for switching on and switching off a three-phase power supply of the oil well motor, the vacuum switch 8 is composed of a magnetic yoke 9, an electromagnetic coil 10, an iron core 11, an armature 12, an armature spring 13, a rotating shaft 14, a crank arm 15, a pull rod 16, a compression rod spring 17, a connecting block 18, a movable contact rod 19 and a vacuum tube 20 (shown in figure 4), the magnetic yoke 9 is fixed on the inner wall of the shell 1, an electromagnetic coil 10 is sleeved on the outer side of the iron core 11, the armature 12 is positioned right in front of the iron core 11, the armature 12 is connected with the armature 9 through the magnetic coil 10, and the armature 12 is mainly used for reducing the loss due to the fact that the electromagnetic coil is connected with the armature coil through the armature spring, and the magnetic yoke 8 is used for reducing the vibration loss, and the vibration loss is not long; the upper end of the armature 12 is connected with a crank arm 15, the crank arm 15 is L-shaped, the crank arm 15 is fixed on the shell 1 through a rotating shaft 14, the top of the crank arm 15 is connected with a pull rod 16, the lower end of the pull rod 16 is connected with a connecting block 18, the bottom of the connecting block 18 is fixed with a movable contact rod 19, the connecting block 18 is connected with an external upper conductive plate 5 through a flexible connection, the movable contact rod 19 stretches into a vacuum tube 20, the end of the movable contact rod 19 is provided with a movable contact, the movable contact is positioned in the vacuum tube 20, a fixed contact is arranged below the movable contact in the vacuum tube 20, and the fixed contact is connected with a lower conductive plate 6; the movable contact and the fixed contact are both sealed in the vacuum switch tube, and the vacuum switch tube has strong arc extinguishing capability, large breaking capability and long service life of the contacts, and is particularly suitable for frequent operation.
When the electromagnetic coil 10 is powered off, namely, no exciting current exists, the armature 12 moves leftwards under the thrust action of the armature spring 13 to drive the crank arm 15 to rotate anticlockwise by taking the rotating shaft 14 as the center, and the crank arm 15 drives the movable contact rod 19 to move upwards through the pull rod 16, namely, the movable contact moves upwards, and the movable contact is separated from the fixed contact, so that the disconnection function is realized; when the electromagnetic coil 10 is electrified, namely, exciting current exists, the armature 12 moves rightwards under the action of electromagnetic attraction, the armature 12 drives the crank arm 15 to rotate clockwise by taking the rotating shaft 14 as the center, the crank arm 15 enables the movable contact 19 to move downwards through the compression bar spring 17, namely, the movable contact moves downwards, and the movable contact and the fixed contact are closed, so that a connection function is realized.
The circuit of the device adopts various sensors and a microcontroller MCU, thereby ensuring the realization of intellectualization and multifunctionality. The circuit is composed of three parts, namely a main control board 2, a power panel 3 and a key display board 4.
As shown in fig. 5, the main control board 2 is composed of a power transformer T1, a rectifying module, a filtering module, a voltage stabilizing module 1, a voltage stabilizing module 2, a charging module, a rechargeable battery E1, a DC/DC isolation module, a signal processing module 1, a signal processing module 2, an a/D conversion module, a photoelectric isolation module, a microcontroller MCU, a clock chip DS12C877+, a GSM module, a driving module 1, a relay KA2, and sockets ZKJ-ZKJ, wherein the socket ZKJ1 is connected with the input end of the power transformer T1 and the input end of the voltage transformer TV 1; the output end of the power transformer T1 is connected with the input end of the rectifying module; the output end of the rectifying module is connected with the input end of the filtering module; the output end of the filtering module is connected with the input end of the voltage stabilizing module 1; the output end of the voltage stabilizing module 1 is connected with the input end of the voltage stabilizing module 2 and the DC/DC isolation module; the output end of the voltage stabilizing module 2 is connected with the input end of the charging module; the output end of the charging module is connected with the rechargeable battery E1; the output end of the voltage transformer TV1 is connected with the input end of the signal processing module 1; the socket ZKJ is connected with the input end of the signal processing module 2; the output ends of the signal processing module 1 and the signal processing module 2 are connected with the A/D conversion module; the A/D conversion module is connected with the microprocessor MCU; the socket ZKJ is connected with the photoelectric isolation module; the photoelectric isolation module is connected with the microprocessor MCU; the socket ZKJ is connected with the microprocessor MCU; the clock chip DS12C877+ is connected with the microprocessor MCU; the socket ZKJ is connected with the GSM module; the GSM module is connected with the microprocessor MCU; the socket ZKJ is connected with the output end of the relay KA 1; the socket ZKJ is connected with the output end of the relay KA 2; the input ends of the relays KA1 and KA2 are connected with the output end of the driving module 1; the input end of the driving module 1 is connected with the microprocessor MCU.
As shown in fig. 6, the power panel 3 is composed of a fuse FU1, diodes D1 to D4, a capacitor C1 and sockets DYJ to DYJ, wherein the 1 end of the socket DYJ is connected with one end of the fuse FU1, and the other end of the fuse FU1 is connected with the 2 end of the socket DYJ2 and the connection ends of the diodes D1 and D3; the end 2 of socket DYJ is connected to both the end 1 of socket DYJ and the end 1 of socket DYJ; the 2 end of the socket DYJ is connected with the connecting ends of the diodes D2 and D4; the connection ends of the diodes D3 and D4 are connected with the 1 end of the socket DYJ; the connection ends of the diodes D1 and D2 are connected with the 2 end of the socket DYJ; the 1 terminal of socket DYJ is connected to both the 1 terminal of capacitor C1 and the 1 terminal of socket DYJ; the terminal 2 of the socket DYJ is connected to both the other terminal of the capacitor C1 and the terminal 2 of the socket DYJ.
The socket DYJ1 of the power panel 3 is externally connected with an alternating current 380V power supply; the socket DYJ is connected with the socket ZKJ1 of the main control board 2 through a flat cable; the socket DYJ is connected with the socket ZKJ2 of the main control board 2 through a flat cable; the socket DYJ is connected with the socket ZKJ3 of the main control board 2 through a flat cable; the electromagnetic coil 10 is composed of a starting coil, a maintaining coil, a diode D5 and plugs DXJ1 and DXJ2 (as shown in figure 7), and a socket DYJ5 is connected with the plug DXJ1 of the electromagnetic coil 10; socket DYJ is connected to plug DXJ2 of solenoid 10; the socket ZKJ4 of the main control board 2 is connected with a current transformer; the socket ZKJ is connected with a start-stop button, a human body infrared sensor, an upper dead point sensor and a lower dead point sensor; the socket ZKJ is connected with the socket AXJ1 of the key display panel 4 through a flat cable; the socket ZKJ is connected to a GSM antenna.
As shown in fig. 8, the key display board 4 is composed of resistors R1 to R6, a light emitting diode D6, a diode D7, a triode V1, a buzzer Y1, a nixie tube, a keyboard interface chip BC7281BES, a driving module 2, a nixie tube, keys S1 to S4 and a socket AXJ1, wherein the socket AXJ is connected with the interface chip BC7281BES, the cathode of the light emitting diode D6 and one end of the resistor R2; the positive electrode of the light-emitting diode D6 is connected with the resistor R1; the other end of the resistor R1 is connected with the socket AXJ 1; the other end of the resistor R2 is connected with the base electrode of the triode V1; the emitter of the triode V1 is connected with the socket AXJ 1; the collector of the triode V1 is connected with the anode of the buzzer; the negative pole of the buzzer is grounded; the interface chip BC7281BES is connected with the driving module 2; the driving module 2 is connected with the nixie tube; the interface chip BC7281BES is connected with the resistors R3-R6; R3-R6 are respectively connected with keys S1-S4; the other ends of the keys S1-S4 are connected together and then connected with the cathode of the diode D7; the anode of the diode D7 is connected to the drive module 2.
The working flow of the invention is as follows: when the MCU of the main control board 2 receives a start-stop button pressing signal externally connected with the socket ZKJ5 of the main control board 2 of a local start button or a remote start signal or a timing start signal received by the GSM module, the MCU sends a control signal to control the relay KA2 to be electrified firstly, the normally open contact of the relay KA2 is closed, the maintenance part of the electromagnetic coil is short-circuited, the KA1 is electrified after 100 milliseconds, the normally open contact of the relay KA2 is closed, the rectifier bridge of the power board 3 is electrified, the rectified output direct current supplies power to the start part of the electromagnetic coil, exciting current is large, enough electromagnetic attraction force is generated, and the vacuum switch is closed through an electromagnetic mechanism; after the power source is started for 3 seconds, KA2 is powered off, at the moment, direct current output by a rectifier bridge of the power panel 3 simultaneously supplies power to a starting and maintaining part of the electromagnetic coil, exciting current is small, energy consumption is reduced, and electromagnetic attraction generated is enough to maintain the closing of the vacuum switch; in order to ensure the safety of GSM remote start and timing start, for the beam pumping unit, whether a person exists under an oil well balance weight is detected, the start can be executed only under the condition that no person is detected, and the existence of the person under the balance weight is detected by externally connecting a socket ZKJ5 of a main control board 2 with a human body infrared sensor. When the MCU of the main control board 2 receives a local stop button press or a remote stop signal or a timing stop signal received by the GSM module, the MCU sends a control signal, KA1 and KA2 are powered off simultaneously, a normally open contact is disconnected, a rectifier bridge of the power board 3 is powered off, an electromagnetic coil does not have exciting current, electromagnetic attraction disappears, and an electromagnetic mechanism drives a vacuum switch to be disconnected. The timing function of the timing start and stop functions of the device is completed through the DS12C877 real clock chip on the main control board 2, and because the internal lithium battery is provided, even if the external power is lost, the internal information can be kept for a long time, so that the trouble that the time needs to be checked again after the power is lost and the power is received is avoided.
The measurement of the power supply voltage is that the power supply voltage is converted through a voltage transformer TV1 on a main control board 2, then is subjected to signal processing, is converted into digital quantity through A/D conversion, is converted through a micro controller MCU, and is finally displayed through a display device of a key display board 4. The measurement of the load current is that the current is converted through the external current transformer of the socket ZKJ4 of the main control board 2, then is subjected to signal processing, is converted into digital quantity through A/D conversion, is converted by the micro controller MCU, and is finally displayed through the display device of the key display board 4. The principle of measuring the up-stroke current and the down-stroke current of the beam pumping unit is that an upper dead point sensor and a lower dead point sensor are externally connected through a socket ZKJ5 of a main control board to detect the upper dead point position and the lower dead point position, and the maximum current in the process of moving from the lower dead point to the upper dead point, namely the up-stroke current, is measured on the basis; measuring the maximum current in the process of moving from bottom dead center to bottom dead center, namely the down stroke current; the number of punches completed in one minute was measured, i.e., the punch speed. One stroke time refers to the process of the sucker rod moving from the bottom dead center to the top dead center and then from the top dead center to the bottom dead center.
After the upper limit voltage, the lower limit voltage, the overload current, the light load current and the three-phase current asymmetry are set through the setting keys in the key display panel 4, the microcontroller MCU on the main control panel 2 compares the set values with the real-time measured values to judge and execute corresponding overvoltage protection, undervoltage protection, overload protection, no-load belt breakage protection and open-phase protection, and the protection is executed through actions of relays KA1 and KA2 of the main control panel 2, the normally open contacts are disconnected, so that the vacuum switch is disconnected, the oil well motor power supply is cut off to implement protection, and the shutdown reason is displayed in a fault code mode on a display window of the key display panel 4.
And information transmission between the device and the mobile phone is realized through a GSM module on the main control board 2. The mobile phone accesses the device in the form of 'password+function code', one mobile phone bound by the device has authority setting for password setting, and other mobile phones can complete the access to the device in the form of 'password+function code'. If the related staff can send a 'password plus function code' to a GSM module of the device through a mobile phone of the related staff, after the GSM module receives the information, the corresponding tasks, such as controlling the start and stop of an oil well motor, are executed according to the requirement of the function code through the analysis of a micro controller MCU; reading a measured value of voltage and current; the beam pumping unit can also read the up-stroke current, the down-stroke current and the punching speed; when the oilfield motor is stopped, the microcontroller MCU sends out the reasons of stopping to the mobile phone of the oil well manager in time through the GSM module, such as manual stopping, power failure stopping, overvoltage stopping, undervoltage stopping, overload stopping, no-load belt breakage stopping, phase failure stopping and the like. In order to ensure that the power failure shutdown information can be normally transmitted, the device is provided with a rechargeable battery and a charging module, and the MCU and the GSM module can normally work for a period of time after the power supply is powered off.
Claims (4)
1. The intelligent control protection device for the oil well motor comprises a shell (1), a main control board (2) and a power panel (3), and is characterized in that a key display board (4) is arranged on the front surface of the shell (1), an upper conducting plate (5) is arranged on the top surface of the shell (1), a lower conducting plate (6) and a connecting terminal (7) are arranged on the bottom surface of the shell (1), the connecting terminal (7) is externally connected with a start-stop button, a human infrared sensor, an upper dead point sensor and a lower dead point sensor, the main control board (2), the power panel (3) and a vacuum switch (8) are arranged in the shell (1), the vacuum switch (8) is composed of a magnetic yoke (9), an electromagnetic coil (10), an iron core (11), an armature (12), an armature spring (13), a rotating shaft (14), a crank arm (15), a pull rod (16), a spring (17), a connecting block (18), a movable contact rod (19) and a vacuum tube (20), wherein the iron core (11) is fixed on the inner wall of the shell (1), the iron core (11) is sleeved with the magnetic yoke (11) and is positioned at the front end of the armature (12) through the magnetic yoke (12), the upper end of the armature (12) is connected with the crank arm (15), the crank arm (15) is L-shaped, the crank arm (15) is fixed in the shell (1) through the rotating shaft (14), the top of the crank arm (15) is connected with the pull rod (16), the lower end of the pull rod (16) is connected with the connecting block (18), the bottom of the connecting block (18) is fixedly provided with the movable contact rod (19), the circuit of the movable contact rod (19) is connected with the upper conductive plate (5), the movable contact rod (19) stretches into the vacuum tube (20), the end of the movable contact rod (19) is provided with a movable contact, the movable contact is positioned in the vacuum tube (20), the lower part of the movable contact is provided with a fixed contact, and the fixed contact is connected with the lower conductive plate (6); the main control board (2) consists of a power transformer T1, a rectifying module, a filtering module, a voltage stabilizing module 1, a voltage stabilizing module 2, a charging module, a rechargeable battery E1, a DC/DC isolation module, a signal processing module 1, a signal processing module 2, an A/D conversion module, a photoelectric isolation module, a microcontroller MCU, a clock chip DS12C877+, a GSM module, a driving module 1, a relay KA2 and sockets ZKJ 1-ZKJ, wherein the socket ZKJ1 is connected with the input end of the power transformer T1 and the input end of a voltage transformer TV 1; the output end of the power transformer T1 is connected with the input end of the rectifying module; the output end of the rectifying module is connected with the input end of the filtering module; the output end of the filtering module is connected with the input end of the voltage stabilizing module 1; the output end of the voltage stabilizing module 1 is connected with the input end of the voltage stabilizing module 2 and the DC/DC isolation module; the output end of the voltage stabilizing module 2 is connected with the input end of the charging module; the output end of the charging module is connected with the rechargeable battery E1; the output end of the voltage transformer TV1 is connected with the input end of the signal processing module 1; the socket ZKJ is connected with the input end of the signal processing module 2; the output ends of the signal processing module 1 and the signal processing module 2 are connected with the A/D conversion module; the A/D conversion module is connected with the microprocessor MCU; the socket ZKJ is connected with the photoelectric isolation module; the photoelectric isolation module is connected with the microprocessor MCU; the socket ZKJ is connected with the microprocessor MCU; the clock chip DS12C877+ is connected with the microprocessor MCU; the socket ZKJ is connected with the GSM module; the GSM module is connected with the microprocessor MCU; the socket ZKJ is connected with the output end of the relay KA 1; the socket ZKJ is connected with the output end of the relay KA 2; the input ends of the relays KA1 and KA2 are connected with the output end of the driving module 1; the input end of the driving module 1 is connected with the microprocessor MCU.
2. The intelligent control and protection device for the oil well motor according to claim 1, wherein the power panel (3) is composed of a fuse FU1, diodes D1-D4, a capacitor C1 and sockets DYJ 1-DYJ, the 1 end of the socket DYJ1 is connected with one end of the fuse FU1, and the other end of the FU1 is connected with the 2 end of the socket DYJ2 and the connection ends of the diodes D1 and D3; the end 2 of socket DYJ is connected to both the end 1 of socket DYJ and the end 1 of socket DYJ; the 2 end of the socket DYJ is connected with the connecting ends of the diodes D2 and D4; the connection ends of the diodes D3 and D4 are connected with the 1 end of the socket DYJ; the connection ends of the diodes D1 and D2 are connected with the 2 end of the socket DYJ; the 1 terminal of socket DYJ is connected to both the 1 terminal of capacitor C1 and the 1 terminal of socket DYJ; the terminal 2 of the socket DYJ is connected to both the other terminal of the capacitor C1 and the terminal 2 of the socket DYJ.
3. The intelligent control and protection device for the oil well motor according to claim 1, wherein the socket DYJ1 of the power panel (3) is externally connected with an alternating current 380V power supply; the socket DYJ is connected with a socket ZKJ1 of the main control board (2) through a flat cable; the socket DYJ is connected with a socket ZKJ2 of the main control board (2) through a flat cable; the socket DYJ is connected with a socket ZKJ3 of the main control board (2) through a flat cable; the electromagnetic coil (10) consists of a starting coil, a maintaining coil, a diode D5, plugs DXJ1 and DXJ2, and a socket DYJ5 is connected with the plug DXJ1 of the electromagnetic coil (10); the socket DYJ is connected with a plug DXJ2 of the electromagnetic coil (10); the socket ZKJ4 of the main control board (2) is connected with a current transformer; the socket ZKJ is connected with a start-stop button, a human body infrared sensor, an upper dead point sensor and a lower dead point sensor; the socket ZKJ is connected with the socket AXJ1 of the key display panel (4) through a flat cable; the socket ZKJ is connected to a GSM antenna.
4. The intelligent control and protection device for the oil well motor according to claim 1, wherein the key display board (4) consists of resistors R1-R6, a light emitting diode D6, a diode D7, a triode V1, a buzzer Y1, a nixie tube, a keyboard interface chip BC7281BES, a driving module 2, a nixie tube, keys S1-S4 and a socket AXJ1, and the socket AXJ1 is connected with the interface chip BC7281BES, the cathode of the light emitting diode D6 and one end of the resistor R2; the positive electrode of the light-emitting diode D6 is connected with the resistor R1; the other end of the resistor R1 is connected with the socket AXJ 1; the other end of the resistor R2 is connected with the base electrode of the triode V1; the emitter of the triode V1 is connected with the socket AXJ 1; the collector of the triode V1 is connected with the anode of the buzzer; the negative pole of the buzzer is grounded; the interface chip BC7281BES is connected with the driving module 2; the driving module 2 is connected with the nixie tube; the interface chip BC7281BES is connected with the resistors R3-R6; R3-R6 are respectively connected with keys S1-S4; the other ends of the keys S1-S4 are connected together and then connected with the cathode of the diode D7; the anode of the diode D7 is connected to the drive module 2.
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| CN201710905002.9A CN107681635B (en) | 2017-09-29 | 2017-09-29 | Intelligent control and protection device for oil well motor |
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| CN201710905002.9A CN107681635B (en) | 2017-09-29 | 2017-09-29 | Intelligent control and protection device for oil well motor |
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| CN107681635A CN107681635A (en) | 2018-02-09 |
| CN107681635B true CN107681635B (en) | 2023-07-07 |
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| CN112564550A (en) * | 2020-12-15 | 2021-03-26 | 贵州航天凯山石油仪器有限公司 | Intelligent starting and stopping device and method for oil well motor |
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