CN111623008B - Electromagnetic valve control device for loading and unloading mine pump station - Google Patents
Electromagnetic valve control device for loading and unloading mine pump station Download PDFInfo
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- CN111623008B CN111623008B CN201911201463.3A CN201911201463A CN111623008B CN 111623008 B CN111623008 B CN 111623008B CN 201911201463 A CN201911201463 A CN 201911201463A CN 111623008 B CN111623008 B CN 111623008B
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- pump station
- loading
- unloading
- relay
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/085—Servomotor systems incorporating electrically operated control means using a data bus, e.g. "CANBUS"
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a control device for loading and unloading electromagnetic valves of a mining pump station, which comprises a controller, a relay, a digital-to-analog converter, an onboard CAN module and an onboard AI module; the relay is connected with the loading and unloading electromagnetic valve of the pump station, the analog-to-digital converter is connected with the loading and unloading electromagnetic valve, and the current of the loading and unloading electromagnetic valve is collected and output to the controller; the onboard CAN module is connected with the pump station master controller and receives the upper pressure limit value and the lower pressure limit value sent by the pump station master controller; the onboard AI module is connected with a pump station pressure sensor, acquires a pump station pressure value and sends the pump station pressure value to the controller; the controller controls the relay to be disconnected when the pressure value of the pump station is higher than the upper pressure limit value, controls the relay to be closed when the pressure value of the pump station is lower than the lower pressure limit value, judges the state of the loading and unloading electromagnetic valve according to the current of the loading and unloading electromagnetic valve, and sends fault information to the main controller of the pump station when the state is abnormal. Based on the control of the device, the loading and unloading electromagnetic valves are always in a monitoring state, so that the corresponding speed of the faults of the loading and unloading electromagnetic valves is increased to millisecond level, and the fault points can be locked quickly.
Description
Technical Field
The invention belongs to the technical field of mining control, and particularly relates to a loading and unloading solenoid valve control device for a mining pump station.
Background
In coal mining in China, underground mining is dominant, and an emulsion pump station is used as power equipment of an underground coal mining hydraulic system and provides hydraulic power of an emulsion medium for equipment such as a hydraulic support and the like. The hydraulic support can reliably and effectively support and control the working face top plate, and the safety of workers and the normal operation of various works are ensured.
The hydraulic support can cause the pressure fluctuation of an emulsion pump station in the working process, if the fluctuation is too large, the stability of the whole system is deteriorated, various influences are brought, the service life of coal mining equipment can be influenced in serious cases, and even the safety of operators is threatened, so that the timely, safe and reliable regulation of the pressure of the emulsion pump station is very important.
The loading and unloading electromagnetic valve is used as an important pressure regulation part for regulating the pressure of the emulsion pump station, and the loading and unloading electromagnetic valve has the function of receiving a switching command from a controller to quickly execute switching action, so that the liquid supply pressure of a pump station is always kept in a set range, and the stability and the reliability of the operation of the loading and unloading electromagnetic valve are particularly important.
Disclosure of Invention
The invention aims to provide a control device for loading and unloading electromagnetic valves of a mining pump station, which can accurately lock various detection faults of the unloading electromagnetic valves aiming at the loading and unloading electromagnetic valves to perform feedback detection and play a positive role in a strict quick closed-loop feedback working mode of the whole pump station.
In order to solve the technical problems, the invention adopts the following technical scheme:
the electromagnetic valve control device for loading and unloading of the mining pump station comprises a controller; further comprising: the relay is connected with the loading and unloading electromagnetic valves of the pump station and is controlled by the controller; the analog-to-digital converter is connected with the loading and unloading electromagnetic valves and used for collecting the current of the loading and unloading electromagnetic valves and outputting the current to the controller; the onboard CAN module is connected with the pump station master controller and used for receiving the upper pressure limit value and the lower pressure limit value sent by the pump station master controller;
the onboard AI module is connected with the pump station pressure sensor, acquires a pump station pressure value detected by the pump station pressure sensor and sends the pump station pressure value to the controller; the controller is used for controlling the relay to be switched off when the pressure value of the pump station is higher than the upper pressure limit value, and controlling the relay to be switched on when the pressure value of the pump station is lower than the lower pressure limit value, so that the pressure value of the pump station is stabilized between the upper pressure limit value and the lower pressure limit value; and judging the state of the loading and unloading electromagnetic valve according to the current of the loading and unloading electromagnetic valve, and sending fault information to the pump station main controller when the state is abnormal.
Further, the controller is specifically configured to: and if the current of the loading and unloading electromagnetic valve sent by the analog-to-digital converter is not received within the set time after the closing command for closing the relay is sent, judging that the loading and unloading electromagnetic valve or the relay is in an open circuit, and sending open circuit fault information to the pump station main controller through the onboard CAN module so that the pump station main controller executes protection action.
Further, the controller is specifically configured to: and if the current of the loading and unloading electromagnetic valve sent by the analog-to-digital converter is received within a set time after a turn-off command for turning off the relay is sent, judging that the loading and unloading electromagnetic valve or the relay is in failure, and sending failure fault information to the pump station main controller through the onboard CAN module so that the pump station main controller executes protection action.
Further, the controller is specifically configured to: if the current of the loading and unloading electromagnetic valve exceeds a closed-circuit current limit value within a set time after a closing command for closing the relay is sent out, judging that the loading and unloading electromagnetic valve or the relay is in a short circuit, and sending short-circuit fault information to the pump station main controller through the onboard CAN module to enable the pump station main controller to execute protection action; or, if the current of the loading and unloading electromagnetic valve exceeds an open-circuit current limit value within a set time after a disconnection command for disconnecting the relay is sent, judging that the loading and unloading electromagnetic valve or the relay is in a short circuit, and sending short-circuit fault information to the pump station main controller through the onboard CAN module so that the pump station main controller executes protection action.
Further, the onboard CAN module also receives an overvoltage protection limit value sent by the pump station master controller; and the controller is also used for controlling the relay to be locked when the pressure value of the pump station exceeds the overvoltage protection limit value.
Further, the controller is also used for controlling the relay to be locked when the pump station pressure sensor or the loading and unloading electromagnetic valve breaks down.
Further, the onboard CAN module is further used for sending the pump station pressure value, the state information of the loading and unloading electromagnetic valves, the current data of the loading and unloading electromagnetic valves and the fault information of the loading and unloading electromagnetic valves and the pump station pressure sensor to the pump station master controller.
Further, the onboard CAN module is also used for receiving an overload and unload solenoid valve overvoltage protection fault manual reset signal, a pump station pressure sensor fault self-reset signal and/or an overload and unload solenoid valve current fault self-reset signal sent by the pump station main controller.
Compared with the prior art, the invention has the advantages and positive effects that: compared with the second-level response time of the feedback of the pressure sensor to the fault, the mining pump station loading and unloading electromagnetic valve control device provided by the invention has the advantages that the controller is designed to monitor the current of the loading and unloading electromagnetic valve collected by the analog-to-digital converter to determine whether the loading and unloading electromagnetic valve is in a controlled reasonable state or not, so that the loading and unloading electromagnetic valve is always under monitoring, a more acute and accurate feedback mechanism is formed, the fault response time of the loading and unloading electromagnetic valve is improved to millisecond level, the fault of the loading and unloading electromagnetic valve can be quickly fed back and responded, the response time of abnormal pressure protection can be greatly reduced, the overvoltage protection time is reduced, the overvoltage impact of a hydraulic system is effectively protected, and the service life of the whole hydraulic system is ensured.
Furthermore, compared with the traditional mode that the loading and unloading electromagnetic valves are only controlled through the switching value output interface, the loading and unloading electromagnetic valve control device for the mining pump station effectively forms closed-loop detection control of electric parameters, can clearly determine faults of the loading and unloading electromagnetic valves, can quickly lock fault points, and provides a solution direction for fault troubleshooting.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
FIG. 1 is an architecture diagram of a loading and unloading solenoid valve control device of a mining pump station according to the present invention;
FIG. 2 is a flow chart of the control device for the loading and unloading electromagnetic valves of the mining pump station to realize the control of the loading and unloading electromagnetic valves.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, the electromagnetic valve control device for loading and unloading of the mining pump station provided by the invention comprises a relay RO, an analog-to-digital converter ADC, an onboard CAN module C, an onboard AI module a and a controller U; the relay RO is connected with a loading and unloading electromagnetic valve K of the pump station and is controlled by a controller U; the analog-to-digital converter ADC is connected with the loading and unloading electromagnetic valve K and is used for collecting the current of the loading and unloading electromagnetic valve K and outputting the current to the controller U; the onboard CAN module C is connected with a pump station main controller and receives a pressure upper limit value and a pressure lower limit value sent by the pump station main controller; the onboard AI module A is connected with a pump station pressure sensor S, acquires a pump station pressure value detected by the pump station pressure sensor and sends the pump station pressure value to the controller U; the controller U is used for controlling the relay RO to be switched off when the pressure value of the pump station is higher than the upper pressure limit value, so that the loading and unloading electromagnetic valve K is controlled to be switched off; when the pressure value of the pump station is lower than the lower pressure limit value, the relay RO is controlled to be closed, so that the loading and unloading electromagnetic valve K is controlled to be closed, and the pressure value of the pump station is stabilized between the upper pressure limit value and the lower pressure limit value through the open and close control of the relay RO; and on the other hand, the state of the loading and unloading electromagnetic valve is judged according to the current of the loading and unloading electromagnetic valve K, and fault information is sent to the pump station main controller when the state is abnormal.
The invention provides a control process of a loading and unloading solenoid valve control device of a mining pump station, which is described in detail by a specific embodiment.
Example one
As shown in fig. 2, during the operation of the system, the on-board CAN module C receives an upper pressure limit value, a lower pressure limit value and an overvoltage protection limit value from a pump station master controller, receives a pump station pressure value obtained by a pump station pressure sensor S, determines whether the pump station pressure value is between the upper pressure limit value and the lower pressure limit value, and if the pump station pressure value exceeds the upper pressure limit value, a controller U controls a relay RO to be turned off, so that a loading and unloading solenoid valve K is turned off; if the pressure is lower than the lower pressure limit value, the controller U controls the relay RO to be closed, so that the loading and unloading electromagnetic valve K is closed; the rapid switching action of the relay RO is used for realizing the rapid switching of the loading and unloading electromagnetic valve K, so that the liquid supply pressure of the pump station is always kept between the upper pressure limit value and the lower pressure limit value.
If the current of the loading and unloading electromagnetic valve sent by the analog-to-digital converter ADC is not received within the set time after the closing command for closing the relay RO is sent out, the controller U judges that the loading and unloading electromagnetic valve K or the relay RO is broken, and sends broken circuit fault information to the pump station main controller through the onboard CAN module C, so that the pump station main controller executes protection actions such as stopping the motor of the pump station.
If the current of the loading and unloading electromagnetic valve sent by the analog-to-digital converter ADC is received within the set time after the relay RO disconnection command is sent out, the controller U judges that the loading and unloading electromagnetic valve K or the relay RO is out of work, and sends out failure fault information to the pump station main controller through the onboard CAN module C, so that the pump station main controller executes protection action.
If the current of the loading and unloading electromagnetic valve exceeds a closed-circuit current limit value within a set time after the closing command of the closed relay RO is sent, the controller U judges that the loading and unloading electromagnetic valve K or the relay RO is short-circuited, carries out the operation of relay current fault setting/loading and unloading electromagnetic valve current fault setting, and sends short-circuit fault information to the pump station main controller through the onboard CAN module C so that the pump station main controller executes protection action; or if the current of the loading and unloading electromagnetic valve exceeds the open-circuit current limit value within the set time after the relay RO disconnection command is sent out, the controller U judges that the loading and unloading electromagnetic valve K or the relay RO is short-circuited, carries out the operation of relay current fault setting/loading and unloading electromagnetic valve current fault setting, and sends short-circuit fault information to the pump station main controller through the onboard CAN module C, so that the pump station main controller executes protection action.
The closed-circuit current limit value and the open-circuit current limit value are set by the pump station according to the working requirements and parameters of the pump station; the set time here is 20ms to 50 ms. When the loading and unloading electromagnetic valve K or the relay RO is judged to have faults such as short circuit, open circuit and failure, the controller U controls the relay RO to be locked, so that the relay RO is forcibly disconnected and is not output any more.
The controller U is also used for controlling the relay RO to be locked when the pressure value of the pump station exceeds the overvoltage protection limit value, so that the relay RO is forcibly disconnected and is not output any more, meanwhile, the operation of loading and unloading electromagnetic valve overvoltage protection fault setting is carried out, and fault information of loading and unloading electromagnetic valve overvoltage protection is sent to a pump station main controller through the onboard CAN module C.
The controller U is also used for carrying out the operation of setting the fault of the pump station pressure sensor when the data detected by the pump station pressure sensor S exceeds the sensor data interval, and sending the fault information of the pump station pressure sensor super data interval to the pump station main controller through the onboard CAN module C.
The onboard CAN module C of the loading and unloading electromagnetic valve control device for the mining pump station is also used for sending the pump station pressure value detected by the pump station pressure sensor S, the state information (open or closed) of the loading and unloading electromagnetic valve, the current data of the loading and unloading electromagnetic valve detected by the ADC (analog-to-digital converter) and the like to the pump station main controller, so that the pump station main controller CAN conveniently perform system control, analysis and the like.
After a pump station main controller carries out system regulation and control and repair according to data sent by the mining pump station loading and unloading solenoid valve control device, an onboard CAN module C receives an loading and unloading solenoid valve overvoltage protection fault manual reset signal, a pump station pressure sensor fault self-reset signal and/or an loading and unloading solenoid valve current fault self-reset signal sent by the pump station main controller, and a controller U resets a pump station pressure sensor fault bit and a relay current fault bit/loading and unloading solenoid valve current fault bit; the overvoltage protection fault of the loading and unloading electromagnetic valve cannot be automatically reset, and manual reset is needed based on a manual reset signal of the loading and unloading electromagnetic valve.
Compared with the second-level response time of the fault by the feedback of a pressure sensor, the control of the loading and unloading solenoid valve control device of the mining pump station provided by the invention adopts the controller to monitor the current of the loading and unloading solenoid valve collected by the analog-digital converter to determine whether the loading and unloading solenoid valve is in a controlled reasonable state or not, so that the loading and unloading solenoid valve is always under monitoring, a more acute and accurate feedback mechanism is formed, the fault response time of the loading and unloading solenoid valve is improved to millisecond level, the fault of the loading and unloading solenoid valve can be quickly fed back and responded, the response time of abnormal pressure protection can be greatly reduced, the overvoltage protection time is reduced, the overvoltage impact of a hydraulic system is effectively protected, and the service life of the whole hydraulic system is ensured.
Compared with the traditional mode of simply controlling the loading and unloading electromagnetic valves through the switching value output interface, the loading and unloading electromagnetic valve control device for the mining pump station effectively forms closed-loop detection control of electric parameters, can clearly determine faults of the loading and unloading electromagnetic valves, can quickly lock fault points, and provides a solution direction for fault troubleshooting.
It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also make changes, modifications, additions or substitutions within the spirit and scope of the present invention.
Claims (5)
1. A mining pump station loading and unloading electromagnetic valve control device comprises a controller; it is characterized by also comprising:
the relay is connected with the loading and unloading electromagnetic valves of the pump station and is controlled by the controller;
the analog-to-digital converter is connected with the loading and unloading electromagnetic valves and is used for collecting the current of the loading and unloading electromagnetic valves and outputting the current to the controller;
the onboard CAN module is connected with the pump station master controller and used for receiving the upper pressure limit value and the lower pressure limit value sent by the pump station master controller;
the onboard AI module is connected with the pump station pressure sensor, acquires a pump station pressure value detected by the pump station pressure sensor and sends the pump station pressure value to the controller;
the controller is used for controlling the relay to be switched off when the pressure value of the pump station is higher than the upper pressure limit value, and controlling the relay to be switched on when the pressure value of the pump station is lower than the lower pressure limit value, so that the pressure value of the pump station is stabilized between the upper pressure limit value and the lower pressure limit value; judging the state of the loading and unloading electromagnetic valve according to the current of the loading and unloading electromagnetic valve, and sending fault information to the pump station main controller when the state is abnormal;
the controller is specifically configured to:
if the current of the loading and unloading electromagnetic valve sent by the analog-to-digital converter is not received within a set time after a closing command for closing the relay is sent, the loading and unloading electromagnetic valve or the relay is judged to be in an open circuit, and open circuit fault information is sent to the pump station main controller through the onboard CAN module, so that the pump station main controller executes protection action;
if the current of the loading and unloading electromagnetic valve sent by the analog-to-digital converter is received within a set time after a turn-off command for turning off the relay is sent, judging that the loading and unloading electromagnetic valve or the relay is in failure, and sending failure fault information to the pump station main controller through the onboard CAN module so that the pump station main controller executes protection action;
if the current of the loading and unloading electromagnetic valve exceeds a closed-circuit current limit value within a set time after a closing command for closing the relay is sent out, judging that the loading and unloading electromagnetic valve or the relay is in a short circuit, and sending short-circuit fault information to the pump station main controller through the onboard CAN module to enable the pump station main controller to execute protection action; or the like, or, alternatively,
and if the current of the loading and unloading electromagnetic valve exceeds an open-circuit current limit value within a set time after a disconnection command for disconnecting the relay is sent, judging that the loading and unloading electromagnetic valve or the relay is in a short circuit, and sending short-circuit fault information to the pump station main controller through the onboard CAN module so that the pump station main controller executes protection action.
2. The mining pump station loading and unloading solenoid valve control device according to claim 1, wherein the onboard CAN module further receives an overvoltage protection limit value sent by the pump station master controller; and the controller is also used for controlling the relay to be locked when the pressure value of the pump station exceeds the overvoltage protection limit value.
3. The mining pump station loading and unloading solenoid valve control device according to claim 1, wherein the controller is further configured to control the relay to be locked when the pump station pressure sensor or the loading and unloading solenoid valve fails.
4. The control device for the loading and unloading solenoid valves of the mining pump station according to claim 1, wherein the onboard CAN module is further configured to send the pump station pressure value, the state information of the loading and unloading solenoid valves, the current data of the loading and unloading solenoid valves, and the fault information of the loading and unloading solenoid valves and the pump station pressure sensor to the pump station master controller.
5. The mining pump station loading and unloading solenoid valve control device according to claim 1, wherein the onboard CAN module is further configured to receive an loading and unloading solenoid valve overvoltage protection fault manual reset signal, a pump station pressure sensor fault self-reset signal and/or an loading and unloading solenoid valve current fault self-reset signal sent by the pump station master controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201463.3A CN111623008B (en) | 2019-11-29 | 2019-11-29 | Electromagnetic valve control device for loading and unloading mine pump station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201463.3A CN111623008B (en) | 2019-11-29 | 2019-11-29 | Electromagnetic valve control device for loading and unloading mine pump station |
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| Publication Number | Publication Date |
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| CN111623008A CN111623008A (en) | 2020-09-04 |
| CN111623008B true CN111623008B (en) | 2022-05-27 |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB857030A (en) * | 1958-10-02 | 1960-12-29 | Nat Res Dev | Duplex driving mechanisms |
| CN1740614A (en) * | 2005-08-15 | 2006-03-01 | 李军 | Wireless intelligent solenoid valve controller |
| CN100516553C (en) * | 2006-08-18 | 2009-07-22 | 淄博市博山防爆电器厂有限公司 | Intelligent emulsion pump station for mining |
| CN101614225B (en) * | 2009-07-07 | 2012-07-04 | 中国矿业大学 | Automatic discharge and self-cleaning filter device for emulsion pump station |
| CN201925166U (en) * | 2010-10-22 | 2011-08-10 | 田宇鹏 | Screw compressor control system based on multi-microcontroller MPU (micro-processing unit) |
| CN102748292B (en) * | 2012-07-18 | 2015-07-01 | 无锡五洋赛德压缩机有限公司 | Constant-pressure variable intelligent air compressor |
| CN203146975U (en) * | 2013-04-12 | 2013-08-21 | 宁波赛维思机械有限公司 | Electromagnetic valve control circuit of pumping station for hydraulic wrench |
| GB2558152B (en) * | 2015-10-14 | 2021-07-07 | Eaton Intelligent Power Ltd | Gear pump journal bearing lubrication flow feed |
| CN208123048U (en) * | 2018-04-19 | 2018-11-20 | 马鞍山唐拓凿岩机械有限公司 | It is a kind of one churn air compressor add Unloading Control circuit and system |
| CN208950838U (en) * | 2018-09-26 | 2019-06-07 | 神钢压缩机制造(上海)有限公司 | A kind of air pressure regulating device of air compressor machine |
| CN110469494B (en) * | 2019-09-12 | 2021-03-12 | 青岛中加特电气股份有限公司 | Mining intrinsic safety type pump station controller and control system |
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2019
- 2019-11-29 CN CN201911201463.3A patent/CN111623008B/en active Active
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