CN210510447U - Intrinsically safe electric ball valve control circuit for coal mine - Google Patents
Intrinsically safe electric ball valve control circuit for coal mine Download PDFInfo
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- CN210510447U CN210510447U CN201921065499.9U CN201921065499U CN210510447U CN 210510447 U CN210510447 U CN 210510447U CN 201921065499 U CN201921065499 U CN 201921065499U CN 210510447 U CN210510447 U CN 210510447U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The embodiment of the utility model discloses colliery is with safe electric ball valve control circuit of essence, control circuit includes safe DC power supply J2 of essence, chargeable call BAT1, normally closed magnetic control switch S1 and motor drive circuit, under the prerequisite that accords with the colliery standard requirement, change two-wire system into by the three-wire system, the mode of logic control case control has been broken away from, there is outside safe power input just to open electric ball valve, no power just utilizes inside stand-by power supply self-closing electric ball valve, and inside stand-by power supply is not power consumptive when electric ball valve closes, thereby make the control of safe electric ball valve of essence simplify, effective reduce cost, the range of application of safe electric ball valve in the colliery place of essence has been enlarged.
Description
Technical Field
The embodiment of the utility model provides a valve technical field for the colliery, concretely relates to colliery is with safe type electric ball valve control circuit of essence.
Background
Present safe type electric ball valve of essence is three-wire system working method, be the essential safety power supply (two-wire) of the same kind promptly and the control line of the same kind is constituteed, after the electric ball valve power supply, when the control line is the low level, if detect this moment the ball valve for the open mode, then the ball valve closure is realized in the motor drive chip driving motor reversal, when the control line is the high level, if detect this moment the ball valve for the closed mode, then the ball valve is realized in the motor drive chip driving motor corotation and opens, this working method requires that the ball valve power supply side must have the logic control case to control, otherwise will not realize the purpose of the electric ball valve of self-closing after. The electric ball valve is used by adding a logic control box, and the electric ball valve is closed after power failure, so that the equipment investment is more and the cost is higher under the condition of realizing the same function.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a colliery is with safe type electric ball valve control circuit of essence to solve current colliery and need increase the logic control case with safe type electric ball valve of essence when using, equipment drops into many, problem with high costs for the coal mine.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: an intrinsically safe electric ball valve control circuit for a coal mine comprises an intrinsically safe direct-current power supply J2, a rechargeable power supply BAT1, a normally closed magnetic control switch S1 and a motor drive circuit;
the rechargeable power supply BAT1 is connected with the intrinsically safe direct-current power supply J2 in parallel, the on-off of the rechargeable power supply BAT1 is controlled through a normally closed magnetic control switch S1, the motor driving circuit is connected with the intrinsically safe direct-current power supply J2, and a permanent magnet for controlling the on-off of the normally closed magnetic control switch S1 is arranged on a valve body of the electric ball valve;
when the intrinsically safe direct current power supply J2 supplies power, the motor driving circuit drives the motor MG1 to rotate positively, the electric ball valve is opened, the permanent magnet is far away from the normally closed magnetic control switch S1, the normally closed magnetic control switch S1 is closed, and the rechargeable power supply BAT1 is in a charging state; when the intrinsically safe direct current power supply J2 is powered off, the rechargeable power supply BAT1 is in a power supply state, the motor driving circuit drives the motor MG1 to rotate reversely, the electric ball valve is closed, the permanent magnet is close to the normally closed magnetic control switch S1, the normally closed magnetic control switch S1 is switched off, and the rechargeable power supply BAT1 is powered off.
Further, the normally closed magnetic switch S1 is connected in series with the rechargeable power supply BAT 1.
Further, the control circuit further comprises an intermediate relay J, the rechargeable power supply BAT1 is connected in series with a normally open contact K1 of the intermediate relay J, the normally closed magnetic control switch S1 is connected in series with an electromagnetic coil of the intermediate relay J, when the normally closed magnetic control switch S1 is closed, the electromagnetic coil of the intermediate relay J is electrified, the normally open contact K1 is closed, the rechargeable power supply BAT1 is in a charging state, when the normally closed magnetic control switch S1 is opened, the electromagnetic coil of the intermediate relay J is powered off, the normally open contact K1 is opened, and the rechargeable power supply BAT1 is in an opening state.
Further, the control circuit further comprises a diode D2, the anode of the rechargeable power supply BAT1 is connected with the cathode of the diode D2, the anode of the diode D2 is connected with the anode of the intrinsically safe direct current power supply J2, and the cathode of the rechargeable power supply BAT1 is connected with the GND end of the intrinsically safe direct current power supply J2.
Further, the motor driving circuit comprises a motor driving chip U1 and a motor MG1, a power supply input end of the motor driving chip U1 is connected with a VCC end, and a ground end of the motor driving chip U1 is connected with a GND end;
a first output end of the motor driving chip U1 is connected with a gate of a MOS tube Q7 through a resistor R10, a source of the MOS tube Q7 is connected with a GND end, a source of the MOS tube Q7 is connected with an anode of a diode D6, a cathode of the diode D6 is connected with an anode of a diode D4, a cathode of the diode D4 is connected with an anode of an intrinsically safe dc power supply J2, a drain of the MOS tube Q7 is connected with a drain of a MOS tube Q57323, a source of the MOS tube Q3 is connected with an anode of an intrinsically safe dc power supply J2, a second output end of the motor driving chip U1 is connected with a base of a triode Q4 through a resistor R1, an emitter of the triode Q4 is connected with a GND end, a collector of the triode Q4 is connected with an anode of the intrinsically safe dc power supply J2 after being connected with a resistor R7 and a resistor R6 in sequence, and a gate of the MOS tube Q3 is connected with a node between a resistor R6 and a;
the second output end of the motor driving chip U1 is connected with the gate of a MOS tube Q6 through a resistor R9, the source of the MOS tube Q6 is connected with a GND end, the source of the MOS tube Q6 is connected with the anode of a diode D5, the cathode of the diode D5 is connected with the anode of a diode D3, the cathode of the diode D3 is connected with the anode of an intrinsically safe dc power supply J2, the drain of the MOS tube Q6 is connected with the drain of a MOS tube Q57323, the source of the MOS tube Q2 is connected with the anode of an intrinsically safe dc power supply J2, the second output end of the motor driving chip U1 is connected with the base of a triode Q1 through a resistor R8, the emitter of the triode Q1 is connected with a GND end, the collector of the triode Q1 is connected with the anode of an intrinsically safe dc power supply J2 after being connected with a resistor R4 and a resistor R5 in sequence, and the gate of the MOS tube Q2 is connected with a node between a resistor R4 and a;
the positive pole of the motor MG1 is connected to the node between the drain of the MOS transistor Q7 and the negative pole of the diode D6, and the negative pole of the motor MG1 is connected to the node between the drain of the MOS transistor Q6 and the negative pole of the diode D5.
Further, the control circuit further comprises a hall sensor HR1 and a hall sensor HR2 which are respectively connected with the input end of the motor driving chip U1, the hall sensor HR1 and the hall sensor HR2 are respectively used for monitoring position information when the electric ball valve is completely opened or closed, and when the hall sensor HR1 monitors that the electric ball valve is completely opened or the hall sensor HR2 monitors that the electric ball valve is completely closed, the motor driving circuit drives the motor MG1 to stop rotating.
Further, the rechargeable power supply BAT1 is a rechargeable lithium battery.
The embodiment of the utility model provides a have following advantage:
the embodiment of the utility model provides a coal mine intrinsic safety type electric ball valve control circuit, on the premise of meeting the coal mine standard requirement, change three-wire system mining intrinsic safety electric ball valve into two-wire system, can realize under the circumstances that there is the intrinsic safety power supply to supply power, automatically open intrinsic safety type electric ball valve, and once cut off the power supply, inside reserve chargeable power supply can continue to supply power to intrinsic safety type electric ball valve, judge external power supply has cut off the power supply simultaneously, then automatically close intrinsic safety type electric ball valve, when closing the completion, cut off the power supply of inside reserve chargeable power supply to intrinsic safety type electric ball valve, ensure under the closed state of intrinsic safety type electric ball valve, do not consume the electric energy of inside reserve battery, break away from the mode of logic control box control, have intrinsic safety power input and just open intrinsic safety type electric ball valve, no power is just automatically closed intrinsic safety type electric ball valve, therefore, the control of the intrinsically safe electric ball valve is simplified, the cost is reduced, the application of the intrinsically safe electric ball valve in a coal mine is facilitated, and the application range of the intrinsically safe electric ball valve in a coal mine place is expanded.
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. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a circuit diagram of an intrinsically safe electric ball valve control circuit for a coal mine, which is provided by the embodiment of the utility model 1.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the embodiment provides a control circuit of an intrinsically safe electric ball valve for a coal mine, and the control circuit includes an intrinsically safe direct-current power supply J2, a rechargeable power supply BAT1, a normally closed magnetic control switch S1, and a motor driving circuit.
The rechargeable power supply BAT1 is connected in parallel with the intrinsically safe direct current power supply J2, and the on-off of the rechargeable power supply BAT1 is controlled through the normally closed magnetic control switch S1. In this embodiment, the rechargeable power supply BAT1 is a rechargeable lithium battery, and the intrinsically safe dc power supply J2 is + 5V. The motor driving circuit is connected with an intrinsically safe direct current power supply J2, and a permanent magnet for controlling the on-off of a normally closed magnetic control switch S1 is arranged on a valve body of the electric ball valve.
When the intrinsically safe direct-current power supply J2 supplies power, the motor driving circuit drives the motor MG1 to rotate forwards, the electric ball valve is opened, the permanent magnet is far away from the normally closed magnetic control switch S1, the normally closed magnetic control switch S1 is closed, and the rechargeable power supply BAT1 is in a charging state; when the intrinsically safe direct current power supply J2 is powered off, the rechargeable power supply BAT1 is in a power supply state, the motor driving circuit drives the motor MG1 to rotate reversely, the electric ball valve is closed, the permanent magnet approaches the normally closed magnetic control switch S1, the normally closed magnetic control switch S1 is switched off, and the rechargeable power supply BAT1 is powered off.
The on-off control of the rechargeable power supply BAT1 by the normally closed magnetic switch S1 can be achieved in two ways, namely, the normally closed magnetic switch S1 is directly connected with the rechargeable power supply BAT1 in series without conversion of an intermediate relay, but the contact capacity of the normally closed magnetic switch S1 is not good, and the mode can be selected if a proper high-capacity contact is available. The other mode is as follows: the control circuit further comprises an intermediate relay J, a rechargeable power supply BAT1 is connected with a normally open contact K1 of the intermediate relay J in series, a normally closed magnetic control switch S1 is connected with an electromagnetic coil of the intermediate relay J in series, when the normally closed magnetic control switch S1 is closed, the electromagnetic coil of the intermediate relay J is electrified, the normally open contact K1 is closed, the rechargeable power supply BAT1 is in a charging state, when the normally closed magnetic control switch S1 is disconnected, the electromagnetic coil of the intermediate relay J is powered off, the normally open contact K1 is opened, and the rechargeable power supply BAT1 is in a disconnecting state.
The control circuit further comprises a diode D2, the anode of the rechargeable power supply BAT1 is connected with the cathode of the diode D2, the anode of the diode D2 is connected with the anode (the '3' end) of the intrinsically safe direct-current power supply J2, the cathode of the rechargeable power supply BAT1 is connected with the GND (the '1' end) of the intrinsically safe direct-current power supply J2, and reverse cut-off of the rechargeable power supply is achieved by connecting the diode D2 in series.
Further, the motor driving circuit includes a motor driving chip U1 and a motor MG1, a power input terminal ("1" terminal) of the motor driving chip U1 is connected to the VCC terminal, and a ground terminal ("8" terminal) of the motor driving chip U1 is connected to the GND terminal.
A first output end (a '2' end) of the motor driving chip U1 is connected with a gate of a MOS transistor Q7 through a resistor R10, a source of the MOS transistor Q7 is connected with a GND end, a source of the MOS transistor Q7 is connected with an anode of a diode D6, a cathode of a diode D6 is connected with an anode of a diode D4, a cathode of a diode D4 is connected with an anode of an intrinsically safe direct-current power supply J2, a drain of the MOS transistor Q7 is connected with a drain of a MOS transistor Q3, a source of the MOS transistor Q3 is connected with an anode of an intrinsically safe direct-current power supply J2, a second output end of the motor driving chip U1 is connected with a base of a triode Q4 through a resistor R1, an emitter of the triode Q4 is connected with a GND end, a collector of a triode Q4 is connected with a resistor R7 and a resistor R6 in sequence and then connected with an anode of the intrinsically safe direct-current power supply J2, and a gate.
A second output end ("3" end) of the motor driving chip U1 is connected with a gate of a MOS transistor Q6 through a resistor R9, a source of the MOS transistor Q6 is connected with a GND end, a source of the MOS transistor Q6 is connected with an anode of a diode D5, a cathode of a diode D5 is connected with an anode of a diode D3, a cathode of a diode D3 is connected with an anode of an intrinsically safe direct-current power supply J2, a drain of the MOS transistor Q6 is connected with a drain of a MOS transistor Q2, a source of the MOS transistor Q2 is connected with an anode of an intrinsically safe direct-current power supply J2, a second output end of the motor driving chip U1 is connected with a base of a triode Q1 through a resistor R8, an emitter of a triode Q1 is connected with a GND end, a collector of a triode Q1 is connected with a resistor R4 and a resistor R5 in sequence and then connected with an anode of the intrinsically safe direct-current power supply J2, and a gate of a.
The positive pole of the motor MG1 is connected to the node between the drain of the MOS transistor Q7 and the negative pole of the diode D6, and the negative pole of the motor MG1 is connected to the node between the drain of the MOS transistor Q6 and the negative pole of the diode D5.
Further, the control circuit further comprises a hall sensor HR1 and a hall sensor HR2 which are respectively connected with input ends ("7" end and "5" end) of the motor driving chip U1, the hall sensor HR1 and the hall sensor HR2 are respectively used for monitoring position information when the motorized ball valve is fully opened or closed, and the motor driving circuit drives the motor MG1 to stop rotating when the hall sensor HR1 monitors that the motorized ball valve is fully opened or the hall sensor HR2 monitors that the motorized ball valve is fully closed.
The main working process is as follows: when the intrinsic safety direct-current power supply J2 is powered on, the motor driving chip U1 controls the MOS tube Q3 and the MOS tube Q6 to be opened, the MOS tube Q2 and the MOS tube Q7 are closed, the motor MG1 rotates forwards to realize the opening of the electric ball valve, at the moment, the normally closed magnetic control switch S1 starts to be closed, the normally open contact K1 of the intermediate relay J is closed, so that the rechargeable lithium battery connected in parallel on the side of the intrinsic safety direct-current power supply J2 is in a charging state, when the electric ball valve reaches a fully opened position, the motor MG1 stops rotating when the position information is monitored by the Hall sensor HR1, when the power failure of the intrinsic safety direct-current power supply J2 is detected, the rechargeable lithium battery starts to discharge, the motor driving chip U1 controls the MOS tube Q2 and the MOS tube Q7 to be opened, the MOS tube Q6 and the MOS tube Q3 to be closed, when the motor MG 48 rotates backwards to realize the closing of the electric ball valve, when the position information is monitored by the Hall sensor, normally open contact K1 opens, cutting off the lithium battery and waiting for the next trigger. After the intrinsically safe electric ball valve is completely closed, the output end of the standby battery is completely cut off, the power consumption is zero, the standby is convenient for long-term standby, and the problem that when a product is not used for a long time, an external intrinsically safe power supply is frequently powered on/off, and the intrinsically safe electric ball valve can still work normally can be solved.
The embodiment of the utility model provides a pair of coal mine is with safe type electric ball valve control circuit of essence, under the prerequisite that accords with the coal mine standard requirement, change two-wire system into by the three-wire system, the mode of logical control case control has been got rid of, there is the input of outside safe power supply just to open electric ball valve, no power just utilizes inside stand-by power supply self-closing electric ball valve, and inside stand-by power supply is not power consumptive after electric ball valve closes, thereby make the control of safe type electric ball valve of essence simplify, effective reduce cost, be convenient for the application of safe type electric ball valve of essence in the colliery, the range of application of safe type electric ball valve of essence in the coal mine place has.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. The intrinsically safe electric ball valve control circuit for the coal mine is characterized by comprising an intrinsically safe direct-current power supply J2, a rechargeable power supply BAT1, a normally closed magnetic control switch S1 and a motor drive circuit;
the rechargeable power supply BAT1 is connected with the intrinsically safe direct-current power supply J2 in parallel, the on-off of the rechargeable power supply BAT1 is controlled through a normally closed magnetic control switch S1, the motor driving circuit is connected with the intrinsically safe direct-current power supply J2, and a permanent magnet for controlling the on-off of the normally closed magnetic control switch S1 is arranged on a valve body of the electric ball valve;
when the intrinsically safe direct current power supply J2 supplies power, the motor driving circuit drives the motor MG1 to rotate positively, the electric ball valve is opened, the permanent magnet is far away from the normally closed magnetic control switch S1, the normally closed magnetic control switch S1 is closed, and the rechargeable power supply BAT1 is in a charging state; when the intrinsically safe direct current power supply J2 is powered off, the rechargeable power supply BAT1 is in a power supply state, the motor driving circuit drives the motor MG1 to rotate reversely, the electric ball valve is closed, the permanent magnet is close to the normally closed magnetic control switch S1, the normally closed magnetic control switch S1 is switched off, and the rechargeable power supply BAT1 is powered off.
2. The intrinsically safe electric ball valve control circuit for coal mines as claimed in claim 1, wherein the normally closed magnetic switch S1 is connected in series with the rechargeable power supply BAT 1.
3. The intrinsically safe electric ball valve control circuit for the coal mine as claimed in claim 1, further comprising an intermediate relay J, wherein the rechargeable power supply BAT1 is connected in series with a normally open contact K1 of the intermediate relay J, the normally closed magnetic control switch S1 is connected in series with an electromagnetic coil of the intermediate relay J, when the normally closed magnetic control switch S1 is closed, the electromagnetic coil of the intermediate relay J is electrified, the normally open contact K1 is closed, the rechargeable power supply BAT1 is in a charging state, and when the normally closed magnetic control switch S1 is opened, the electromagnetic coil of the intermediate relay J is powered off, the normally open contact K1 is opened, and the rechargeable power supply BAT1 is in a cutting-off state.
4. The intrinsically safe electric ball valve control circuit for the coal mine as claimed in claim 1, further comprising a diode D2, wherein the anode of the rechargeable power supply BAT1 is connected with the cathode of a diode D2, the anode of the diode D2 is connected with the anode of an intrinsically safe direct current power supply J2, and the cathode of the rechargeable power supply BAT1 is connected with the GND terminal of the intrinsically safe direct current power supply J2.
5. The intrinsically safe electric ball valve control circuit for coal mines as claimed in claim 1, wherein the motor driving circuit comprises a motor driving chip U1 and a motor MG1, a power supply input end of the motor driving chip U1 is connected with a VCC end, and a ground end of the motor driving chip U1 is connected with a GND end;
a first output end of the motor driving chip U1 is connected with a gate of a MOS tube Q7 through a resistor R10, a source of the MOS tube Q7 is connected with a GND end, a source of the MOS tube Q7 is connected with an anode of a diode D6, a cathode of the diode D6 is connected with an anode of a diode D4, a cathode of the diode D4 is connected with an anode of an intrinsically safe dc power supply J2, a drain of the MOS tube Q7 is connected with a drain of a MOS tube Q57323, a source of the MOS tube Q3 is connected with an anode of an intrinsically safe dc power supply J2, a second output end of the motor driving chip U1 is connected with a base of a triode Q4 through a resistor R1, an emitter of the triode Q4 is connected with a GND end, a collector of the triode Q4 is connected with an anode of the intrinsically safe dc power supply J2 after being connected with a resistor R7 and a resistor R6 in sequence, and a gate of the MOS tube Q3 is connected with a node between a resistor R6 and a;
the second output end of the motor driving chip U1 is connected with the gate of a MOS tube Q6 through a resistor R9, the source of the MOS tube Q6 is connected with a GND end, the source of the MOS tube Q6 is connected with the anode of a diode D5, the cathode of the diode D5 is connected with the anode of a diode D3, the cathode of the diode D3 is connected with the anode of an intrinsically safe dc power supply J2, the drain of the MOS tube Q6 is connected with the drain of a MOS tube Q57323, the source of the MOS tube Q2 is connected with the anode of an intrinsically safe dc power supply J2, the second output end of the motor driving chip U1 is connected with the base of a triode Q1 through a resistor R8, the emitter of the triode Q1 is connected with a GND end, the collector of the triode Q1 is connected with the anode of an intrinsically safe dc power supply J2 after being connected with a resistor R4 and a resistor R5 in sequence, and the gate of the MOS tube Q2 is connected with a node between a resistor R4 and a;
the positive pole of the motor MG1 is connected to the node between the drain of the MOS transistor Q7 and the negative pole of the diode D6, and the negative pole of the motor MG1 is connected to the node between the drain of the MOS transistor Q6 and the negative pole of the diode D5.
6. The intrinsically safe electric ball valve control circuit for the coal mine as claimed in claim 5, further comprising a Hall sensor HR1 and a Hall sensor HR2 which are respectively connected with the input end of the motor driving chip U1, wherein the Hall sensor HR1 and the Hall sensor HR2 are respectively used for monitoring position information when the electric ball valve is fully opened or closed, and when the Hall sensor HR1 monitors that the electric ball valve is fully opened or the Hall sensor HR2 monitors that the electric ball valve is fully closed, the motor driving circuit drives the motor MG1 to stop rotating.
7. The intrinsically safe electric ball valve control circuit for coal mines as claimed in claim 1, wherein the rechargeable power supply BAT1 is a rechargeable lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921065499.9U CN210510447U (en) | 2019-07-09 | 2019-07-09 | Intrinsically safe electric ball valve control circuit for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921065499.9U CN210510447U (en) | 2019-07-09 | 2019-07-09 | Intrinsically safe electric ball valve control circuit for coal mine |
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| Publication Number | Publication Date |
|---|---|
| CN210510447U true CN210510447U (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921065499.9U Active CN210510447U (en) | 2019-07-09 | 2019-07-09 | Intrinsically safe electric ball valve control circuit for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210510447U (en) |
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2019
- 2019-07-09 CN CN201921065499.9U patent/CN210510447U/en active Active
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