CN211401304U - Fully-mechanized coal mining face electromechanical equipment cooling monitoring device - Google Patents
Fully-mechanized coal mining face electromechanical equipment cooling monitoring device Download PDFInfo
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- CN211401304U CN211401304U CN202020315536.3U CN202020315536U CN211401304U CN 211401304 U CN211401304 U CN 211401304U CN 202020315536 U CN202020315536 U CN 202020315536U CN 211401304 U CN211401304 U CN 211401304U
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Abstract
The utility model belongs to the coal mine fully mechanized mining field, in particular to a fully mechanized mining face electromechanical equipment cooling monitoring device, which is a closed loop monitoring system for monitoring pipeline cooling water pressure, temperature and flow on line and combining remote monitoring facilities for centralized control; cooling water passes through a filter to reach a water inlet electric ball valve, is boosted by a variable frequency water pump, and is supplied to each roller and the rocker arm spray head through a shunt valve; or cooling each electromechanical device through a shunt valve after passing through a pressure reducing valve, and finally spraying dust from a nozzle at the tail end of each branch pipeline; a pressure sensor and a temperature sensor are arranged on a pipeline behind the variable frequency water pump, the pressure sensor and the flow sensor are arranged in front of the roller and the rocker arm spray head, and the temperature sensor and the flow sensor are arranged in front of each tail end nozzle; the system is also provided with a PLC main controller, a touch screen and a remote monitoring computer, so that centralized automatic control and remote visual monitoring of the electromechanical equipment cooling system of the fully mechanized coal mining face are realized.
Description
Technical Field
The utility model belongs to the colliery is fully mechanized and is adopted the field, concretely relates to fully combine and adopt working face electromechanical device cooling monitoring device.
Background
In recent years, the coal mining process of the coal mine in China is continuously developed, the coal mining efficiency of a working face is greatly improved, the comprehensive mechanization, automation, safety, high yield and high efficiency become the mainstream direction of coal mining, and the motor power of the fully mechanized coal mining face is continuously increased. In the coal mining process, the motor and the hydraulic system continuously work to generate a large amount of heat, so that the temperature of the motor and the temperature of hydraulic oil are increased, and the heat generated by the motor needs to be discharged in time for ensuring the safe and stable operation of the motor. The existing fully mechanized coal mining face motor mainly adopts a water cooling mode due to the limitation of severe environments such as narrow space of a coal mining face, high gas content, large dust concentration, poor ventilation condition and the like. The water-cooled motor has compact structure, high efficiency and good cooling effect; but the hidden troubles of corrosion, blockage, leakage and the like easily exist, and the safe and stable operation of the equipment is influenced. The existing cooling system has some problems to be solved urgently in the using process:
(1) the cooling water has more impurities, is easy to block nozzles and pipelines, and has poor cooling effect.
(2) Due to the reasons of extrusion and the like in the field, the cooling pipeline is easily extruded and damaged, the water pressure in the pipeline is increased, and personnel injury is easily caused during maintenance and replacement.
(3) The temperature of water in the water tank cannot be detected, and the cooling effect cannot be judged.
SUMMERY OF THE UTILITY MODEL
To the above situation, the utility model relates to a combine and adopt working face electromechanical device cooling monitoring device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a fully mechanized coal mining face electromechanical equipment cooling monitoring device is a closed loop monitoring system which monitors pipeline cooling water pressure, temperature and flow on line and combines remote monitoring facilities to control in a centralized way; cooling water enters the system through a main water inlet pipeline, passes through a filter to a water inlet electric ball valve, is boosted by a variable frequency water pump, and is respectively supplied to a left roller spray head and a right roller spray head through a water distribution valve A, and is respectively supplied to a left rocker arm spray head and a right rocker arm spray head through a water distribution valve B, wherein the water distribution valve A and the water distribution valve B are in a parallel connection relationship;
cooling water from a variable frequency water pump is reduced by a pressure reducing valve, and then is supplied to a left tractor water jacket and a left cutter water jacket through a shunt valve C, a left traction box cooler is connected to the downstream of the left tractor water jacket, an oil tank cooler and an electric control part water jacket are respectively supplied with water through a shunt valve D, a right tractor water jacket and a right cutter water jacket are respectively supplied with water through a shunt valve E, a right traction box cooler is connected to the downstream of the right tractor water jacket, the shunt valve C, the shunt valve D and the shunt valve E are arranged in parallel, and after cooling of all electromechanical equipment is completed by cooling water of all branch pipelines, the cooling water is finally sprayed out from a nozzle at the tail end of each branch pipeline for underground environment dust removal;
a pressure sensor and a temperature sensor are installed on a main water inlet pipeline at the rear section of the variable frequency water pump, pressure sensors and flow sensors are installed on front section pipelines of the left roller spray head, the right roller spray head, the left rocker arm spray head and the right rocker arm spray head, and temperature sensors and flow sensors are installed on branch pipelines at the front section of each tail end nozzle; the system is also provided with a PLC main controller, a touch screen, a remote monitoring computer and a frequency converter matched with the variable frequency water pump, wherein each pressure sensor, temperature sensor and flow sensor are used as feedback signal input terminals of the PLC main controller, the water inlet electric ball valve and the variable frequency water pump controlled by the frequency converter are used as control instruction output terminals of the PLC main controller, and the PLC main controller is also electrically connected with the human-computer interface touch screen and the upper computer remote monitoring computer through a TCP/IP industrial Ethernet.
Preferably, the traction motors and the cutting motors corresponding to the left tractor water jacket, the left cutting machine water jacket, the right tractor water jacket and the right cutting machine water jacket are respectively provided with a start-stop sensor in a matching manner, and the start-stop sensors are all used as feedback signal input terminals and are electrically connected with the input end of the PLC main controller.
Preferably, the input signals transmitted to the PLC main controller by the pressure sensor and the flow sensor are both analog quantity input signals of 4-20mA, and the analog quantity isolation module safety grating is adopted for signal isolation.
Preferably, the temperature sensor converts the temperature monitoring signal into an analog quantity input signal of 4-20mA through a signal transmitter and transmits the analog quantity input signal to the PLC main controller, and an analog quantity isolation module safety grid is adopted for signal isolation.
The system adopts closed-loop control of pipeline pressure, and ensures stable pressure of the spraying system. The PLC main controller collects real-time water pressure of a pipeline, compares the real-time water pressure with a set value, outputs control quantity through a PID control algorithm, drives a frequency converter, and achieves pressure closed-loop control.
The pressure control adopts a frequency conversion speed regulation energy-saving control method, and the running frequency of the frequency converter is automatically regulated according to the load change. The frequency converter is used for adjusting the water pressure of the spraying and cooling system, and the running frequency of the frequency converter is given to the main controller to realize control by outputting a 4-20mA signal through the analog quantity output module.
All the spraying branch pipelines are provided with flow and pressure sensors to monitor whether the flow and the pressure meet the requirements in real time. The flow and pressure sensors adopt 4-20mA signal transmission and adopt safety gates for signal isolation. The flow sensor is used for detecting whether water flows through and whether water is blocked. The pressure sensor is used for detecting whether the water pressure is normal or not and judging the spraying effect.
All cooling branches are provided with flow and temperature sensors for monitoring the cooling effect, the flow and temperature sensors adopt 4-20mA signal transmission and adopt safety gates for signal isolation.
The PLC main controller collects temperature, pressure, flow and signals on site, and controls the electric ball valve and the frequency converter through a built-in control algorithm, so that centralized spraying and cooling control of the coal mining machine are realized. And the start-stop sensor transmits start-stop signals of the motors of the electromechanical equipment to the PLC main controller for judging whether the water supply work of the electromechanical equipment cooling monitoring device needs to be started or not.
The PLC main controller, the touch screen and the remote monitoring computer are communicated by adopting a TCP/IP industrial Ethernet, and the touch screen and the remote monitoring computer are used for displaying the running state of the equipment and can remotely control the running of the equipment.
The temperature sensor is used for detecting the water inlet temperature and the temperature of the cooling water outlet of each device, diagnosing the cooling effect and early warning the health condition of the devices. The flow sensor is used for detecting inflow and outflow and judging the blocking condition.
The pressure sensor is used for detecting the pressure of the main pipeline, comparing the pressure with a set value, outputting a control quantity through a PID control algorithm of the main controller, and driving the frequency converter to realize pressure closed-loop control.
The frequency converter is used for adjusting the water pressure of the spraying and cooling system, and the running frequency of the frequency converter is given to the main controller to realize control by outputting a 4-20mA signal through the analog quantity output module.
The PLC main controller collects signals of temperature, pressure, flow, start and stop and the like of a site in real time, and controls the electric ball valve and the frequency converter through a built-in control algorithm, so that centralized spraying and cooling control of the coal mining machine are realized.
The touch screen and the remote monitoring computer are used for displaying the running state of the equipment and can remotely control the equipment to run.
The utility model discloses still including other subassemblies that can make its normal use, be the conventional technical means in this field, in addition, the utility model discloses in add device or the subassembly of injecing, all adopt the conventional setting in this field.
The utility model has the advantages as follows:
this combine and adopt working face electromechanical device cooling monitoring device utilizes PLC automatic control technique, realize combining and adopt working face motor cooling system centralized monitoring, improve the cooling effect, the automation level of lifting means reduces and maintains the work load, have stronger engineering application and worth, the real-time cooling system's of multisensor temperature, pressure, flow isoparametric, realize the centralized cooling control of essential equipment, the long-range visualization of each equipment cooling state promotes cooling efficiency, reduce the water consumption, the energy saving, promote cooling system's automation level.
Drawings
Fig. 1 is a block diagram of a pipeline system structure of the cooling monitoring device for the electromechanical equipment of the fully mechanized mining face according to the embodiment.
Fig. 2 is a block diagram of the spray cooling centralized monitoring system according to the embodiment.
Fig. 3 is a schematic diagram of a temperature detection circuit according to an embodiment.
FIG. 4 is a schematic diagram of a pressure and flow sensing circuit of an embodiment.
Fig. 5 is a circuit schematic diagram of the PLC main controller of the embodiment.
Fig. 6 is a circuit schematic diagram of the inverter control of the embodiment.
Detailed Description
The technical solution of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.
Examples
As shown in fig. 1-6, the cooling monitoring device for the electromechanical equipment of the fully mechanized mining face is a closed loop monitoring system which monitors the pressure, temperature and flow of cooling water in a pipeline on line and combines the centralized control of a remote monitoring facility; cooling water enters the system from a main water inlet pipeline 0, passes through a filter 1 to a water inlet electric ball valve 2, is boosted by a variable frequency water pump 3, and is respectively supplied to a left roller spray head 5 and a right roller spray head 6 through a water distribution valve A4, and is respectively supplied to a left rocker arm spray head 8 and a right rocker arm spray head 9 through a water distribution valve B7, wherein the water distribution valve A4 and the water distribution valve B7 are connected in parallel;
after the cooling water from the variable frequency water pump 3 is reduced by the pressure reducing valve 10, the cooling water is respectively supplied to a left tractor water jacket 12 and a left cutter water jacket 14 through a shunt valve C11, the downstream of the left tractor water jacket 12 is connected with a left tractor tank cooler 13, the downstream of the left tractor water jacket 12 is respectively supplied to an oil tank cooler 16 and an electric control part water jacket 17 through a shunt valve D15, the cooling water is respectively supplied to a right tractor water jacket 19 and a right cutter water jacket 21 through a shunt valve E18, the downstream of the right tractor water jacket 19 is connected with a right tractor tank cooler 20, the shunt valve C11, the shunt valve D15 and the shunt valve E18 are arranged in parallel, and after cooling and temperature reduction of each electromechanical device are completed, the cooling water of each branch pipeline is finally sprayed out from a nozzle 29 at the tail;
a pressure sensor 22 and a temperature sensor 23 are installed on a main water inlet pipeline 0 at the rear section of the variable frequency water pump 3, pressure sensors 22 and flow sensors 24 are installed on front section pipelines of the left roller spray head 5, the right roller spray head 6, the left rocker arm spray head 8 and the right rocker arm spray head 9, and a temperature sensor 23 and a flow sensor 24 are installed on a branch pipeline at the front section of each tail end nozzle 29; the system is also provided with a PLC main controller 25, a touch screen 26, a remote monitoring computer 27 and a frequency converter 28 matched with the variable frequency water pump 3, wherein each pressure sensor 22, temperature sensor 23 and flow sensor 24 are all used as feedback signal input terminals of the PLC main controller 25, the water inlet electric ball valve 2 and the variable frequency water pump 3 controlled by the frequency converter 28 are used as control instruction output terminals of the PLC main controller 25, and the PLC main controller 25 is also electrically connected with the human-computer interface touch screen 26 and the upper computer remote monitoring computer 27 through a TCP/IP industrial Ethernet.
And start-stop sensors are arranged on the traction motors and the cutting motors corresponding to the left tractor water jacket 12, the left cutting machine water jacket 14, the right tractor water jacket 19 and the right cutting machine water jacket 21 in a matching manner, and the start-stop sensors are electrically connected with the input end of the PLC main controller 25 as feedback signal input terminals.
The input signals transmitted to the PLC main controller 25 by the pressure sensor 22 and the flow sensor 24 are analog quantity input signals of 4-20mA, and signal isolation is carried out by adopting an analog quantity isolation module safety grating.
The temperature sensor 23 converts the temperature monitoring signal into an analog quantity input signal of 4-20mA through a signal transmitter and transmits the analog quantity input signal to the PLC main controller 25, and an analog quantity isolation module safety grid is adopted for signal isolation.
The PLC main controller 25 adopts Siemens 1200 type PLC.
The touch screen 26 is a vinylon MT8104 type touch screen.
The frequency converter 28 adopts a Siemens MM440 frequency converter.
The pressure sensor 22 is a GPD10 type mining intrinsic safety explosion-proof pressure transmitter.
The temperature sensor 23 is a Pt100 type thermal resistor.
The flow sensor 24 is an LJS type mining explosion-proof and intrinsically safe ultrasonic pipeline flowmeter.
The technical solution of the present invention is not limited to the above-mentioned specific embodiments, and many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims (4)
1. The utility model provides a combine and adopt working face electromechanical device cooling monitoring device which characterized in that: the device is a closed-loop monitoring system which monitors the pressure, temperature and flow of the pipeline cooling water on line and combines the centralized control of remote monitoring facilities; cooling water enters the system through a main water inlet pipeline (0), passes through a filter (1) to a water inlet electric ball valve (2), is boosted by a variable frequency water pump (3), and is respectively supplied to a left roller spray head (5) and a right roller spray head (6) through a shunt valve A (4), and is respectively supplied to a left rocker arm spray head (8) and a right rocker arm spray head (9) through a shunt valve B (7), wherein the shunt valve A (4) and the shunt valve B (7) are arranged in parallel;
after cooling water from a variable frequency water pump (3) is reduced by a pressure reducing valve (10), the cooling water is respectively supplied to a left tractor water jacket (12) and a left cutter water jacket (14) through a shunt valve C (11), the downstream of the left tractor water jacket (12) is connected with a left tractor cooler (13), the downstream of the left tractor water jacket (12) is respectively supplied with water to an oil tank cooler (16) and an electric control part water jacket (17) through a shunt valve D (15), the downstream of the right tractor water jacket (19) is connected with a right tractor cooler (20), the shunt valve C (11), the shunt valve D (15) and the shunt valve E (18) are arranged in parallel, and after cooling water of each branch pipeline cools each electromechanical device, the cooling water is finally sprayed out from a nozzle (29) at the tail end of each branch pipeline for underground environment dust removal;
a pressure sensor (22) and a temperature sensor (23) are installed on a main water inlet pipeline (0) at the rear section of the variable frequency water pump (3), pressure sensors (22) and flow sensors (24) are installed on front section pipelines of the left roller spray head (5), the right roller spray head (6), the left rocker arm spray head (8) and the right rocker arm spray head (9), and temperature sensors (23) and flow sensors (24) are installed on branch pipelines at the front section of each tail end nozzle (29); the system is further provided with a PLC main controller (25), a touch screen (26), a remote monitoring computer (27) and a frequency converter (28) which is matched with the variable frequency water pump (3) to be arranged, wherein each pressure sensor (22), each temperature sensor (23) and each flow sensor (24) are used as a feedback signal input terminal of the PLC main controller (25), the water inlet electric ball valve (2) and the variable frequency water pump (3) controlled by the frequency converter (28) are used as a control instruction output terminal of the PLC main controller (25), and the PLC main controller (25) is further electrically connected with the human-computer interface touch screen (26) and the upper computer remote monitoring computer (27) through a TCP/IP industrial Ethernet.
2. The fully mechanized mining face electromechanical device cooling monitoring device of claim 1, wherein: and start-stop sensors are arranged on the traction motors and the cutting motors corresponding to the left tractor water jacket (12), the left cutting machine water jacket (14), the right tractor water jacket (19) and the right cutting machine water jacket (21) in a matching manner, and the start-stop sensors are electrically connected with the input end of the PLC main controller (25) as feedback signal input terminals.
3. The fully mechanized mining face electromechanical device cooling monitoring device of claim 2, wherein: the input signals transmitted to the PLC main controller (25) by the pressure sensor (22) and the flow sensor (24) are both analog quantity input signals of 4-20mA, and signal isolation is carried out by adopting an analog quantity isolation module safety grating.
4. The fully mechanized mining face electromechanical device cooling monitoring device of claim 1, wherein: the temperature sensor (23) converts a temperature monitoring signal into an analog quantity input signal of 4-20mA through a signal transmitter and transmits the analog quantity input signal to the PLC main controller (25), and an analog quantity isolation module safety grid is adopted for signal isolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020315536.3U CN211401304U (en) | 2020-03-14 | 2020-03-14 | Fully-mechanized coal mining face electromechanical equipment cooling monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020315536.3U CN211401304U (en) | 2020-03-14 | 2020-03-14 | Fully-mechanized coal mining face electromechanical equipment cooling monitoring device |
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| CN211401304U true CN211401304U (en) | 2020-09-01 |
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| CN202020315536.3U Expired - Fee Related CN211401304U (en) | 2020-03-14 | 2020-03-14 | Fully-mechanized coal mining face electromechanical equipment cooling monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555470A (en) * | 2020-11-20 | 2021-03-26 | 中国煤炭科工集团太原研究院有限公司 | Novel unloading valve for water system of side continuous mining machine |
-
2020
- 2020-03-14 CN CN202020315536.3U patent/CN211401304U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555470A (en) * | 2020-11-20 | 2021-03-26 | 中国煤炭科工集团太原研究院有限公司 | Novel unloading valve for water system of side continuous mining machine |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200901 |
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| CF01 | Termination of patent right due to non-payment of annual fee |