Remote liquid supply system monitoring method

Abstract

The invention discloses a remote liquid supply system monitoring method, which comprises the following steps: respectively installing pressure, flow and temperature sensors at the head and tail ends of a water inlet pipeline, a water return pipeline and a water pipeline of a remote liquid supply pipeline, and installing liquid leakage detection units on the pipelines between the sensors at the head and tail ends; the local monitoring system carries out comparative analysis and operation on pressure, flow and temperature data monitored at the head end and the tail end of a water inlet pipeline, a water outlet pipeline and a water outlet pipeline, whether leakage or impact exists in the pipelines or not and the specific liquid leakage position are obtained, alarm prompting is carried out, and meanwhile gate valves installed along the long-distance liquid inlet pipeline, the long-distance liquid outlet pipeline and the long-distance liquid outlet pipeline are controlled to be opened and closed. Closed-loop control such as maintenance can be conveniently carried out, once leakage or other abnormal conditions occur, the system can immediately give an alarm, and potential safety accidents are effectively prevented; and the local monitoring system can count the flow of the inlet pipeline, the return pipeline and the water pipeline, the working face liquid consumption amount and the on-way pipeline loss amount through statistical analysis and calculation, so that the working face liquid consumption amount and the on-way pipeline loss amount can be evaluated, fluid use is optimized, and waste is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of remote fluid supply monitoring in coal mines, and in particular relates to a remote fluid supply system monitoring method. Background Art

[0002] With the high-yield and high-efficiency development of coal mining technology, remote fluid supply technology has also emerged as a new and efficient means of long-distance fluid transportation. This technology realizes the fixed installation, management and maintenance of the fluid supply system by placing pump stations and other fluid supply system equipment in a safe chamber away from the coal mining face, thereby improving work efficiency and reducing the labor intensity of workers. However, in practical applications, remote fluid supply technology still faces some challenges. First, the current remote fluid supply system lacks real-time monitoring capabilities, which means that if leakage occurs at the pipeline connection during fluid transmission, it may not only lead to waste of resources, but also damage equipment and even cause safety accidents. Especially for high-pressure liquid transportation, the lack of real-time monitoring means that potential problems cannot be warned in advance, thereby increasing the possibility of safety risks and economic losses.

[0003] In addition, due to the lack of effective monitoring measures, it is difficult to trace the root cause when a problem occurs, so that the fault cannot be solved in a timely and thorough manner, which buries hidden dangers for safe production. At present, the maintenance of the remote liquid supply system mainly relies on manual inspections, which not only increases the workload of workers, but also easily misses the fault point, especially in places with harsh operating environments such as underground. Manual inspections are difficult to ensure that all problems are found, and timely and effective early warning and maintenance cannot be achieved. In addition, when the pipeline needs to be quickly cut off in an emergency, the operation efficiency of the manual shut-off valve is low. Workers must rotate the handwheel or handle of the manual shut-off valve to close the pipeline, but this process often becomes slow or cannot be completed at all due to the excessive torque required to operate the handwheel or handle of the manual shut-off valve, which in turn affects the timely closure of the pipeline. At the same time, there are also safety hazards during the operation. In addition, since the remote liquid supply pipeline system cannot be monitored in real time, it is impossible to monitor the flow of the three pipelines of inlet, return, and water, and it is impossible to count the flow of the three pipelines of inlet, return, and water, and it is even more impossible to analyze and calculate the loss along the pipeline and the liquid consumption of the coal mining face. Summary of the invention

[0004] In view of the defects and problems existing in the existing remote fluid supply monitoring of coal mines, the present invention provides a remote fluid supply system monitoring method. This scheme aims to achieve intelligent management of the remote fluid supply system through a sensor group, real-time data acquisition and analysis, automatic control of electronically controlled gate valves and remote monitoring, thereby improving the safety, efficiency and resource utilization of coal mining operations and reducing the labor intensity and safety hazards of manual intervention.

[0005] The solution adopted by the present invention to solve the technical problem is: a remote liquid supply system monitoring method, comprising the following steps: Step 1: Install sensor groups on both ends of the inlet pipeline, return pipeline and water inlet pipeline of the remote liquid supply pipeline, and connect the sensor groups to a data acquisition device. The data acquisition device detects the pressure, temperature and flow rate in the pipelines at both ends of each pipeline in real time through the sensor groups; Step 2: Install a liquid leakage detection unit on each pipeline between the sensor groups at both ends, and connect a data acquisition device to detect in real time whether there is a liquid leakage position in the remote liquid supply pipeline; Step 3, an electric-controlled gate valve is arranged at intervals on the liquid inlet pipeline, the liquid return pipeline and the water inlet pipeline, and the electric-controlled gate valve is connected to the data acquisition device; Step 4: Connect the data acquisition device to the local monitoring system. The local monitoring system obtains the leakage conditions of the leakage detection units of each pipeline and the pressure values, flow values ​​and temperature values ​​at both ends of each pipeline through the data acquisition device, performs statistical analysis and calculation, determines whether there is an abnormal state in the pipeline, and controls the opening and closing operations of the electric control gate valve on the pipeline according to the judgment result; Step 5: While the local monitoring system controls the opening and closing of the electric gate valve on the pipeline according to the judgment result, the local monitoring system will simultaneously issue an abnormal state alarm prompt; Step six, the local monitoring system will count the flow of the liquid inlet pipeline, liquid return pipeline and water inlet pipeline at regular intervals, and calculate the liquid consumption of the working surface and the loss along the pipeline during this period of time through pipeline flow data analysis.

[0006] The sensor group in step 1 includes a pressure sensor, a temperature sensor and a flow sensor.

[0007] The abnormal conditions in step four include abnormal liquid supply conditions, abnormal impact conditions and abnormal leakage conditions. The local monitoring system determines whether there is an abnormal liquid supply condition and an abnormal impact condition in the pipeline according to the pressure values, flow values ​​and temperature values ​​at both ends of each pipeline, and controls the opening and closing operations of the electric-controlled gate valves on the pipelines according to the judgment results; the local monitoring system confirms the specific leakage position of each pipeline according to the leakage conditions sent by the leakage detection units of each pipeline. When the leakage conditions sent by the leakage detection units are received, the local monitoring system determines the position of the leakage point of the pipeline according to the leakage conditions, and controls the corresponding electric-controlled gate valves to perform opening and closing operations according to the position of the leakage point of the pipeline.

[0008] The impact abnormal state judgment operation is: when △ t 瞬 =t 瞬2 -t 瞬1 > △ t 瞬额 , there is impact in the pipeline; in △ t瞬 is the temperature difference of the liquid flowing through the two ends of the pipeline, t 瞬1 is the temperature of the liquid flowing through the first end of the pipeline, t 瞬2 is the temperature of the liquid flowing through the end of the pipeline, △ t 瞬额 It is the rated temperature difference of the liquid flowing through the two ends of the pipeline.

[0009] The leakage abnormal state judgment includes leakage judgment operation and leakage verification operation. The local monitoring system performs leakage judgment operation according to the pressure values ​​at both ends of the pipeline. When there is a leakage in the pipeline, the local monitoring system performs leakage verification operation according to the flow values ​​at both ends of the pipeline.

[0010] The leakage judgment operation is: when △ P 瞬 =P 瞬1 -P 瞬2 > △ P 瞬额 , there is a leak in the pipeline.

[0011] in △ P 瞬 P is the pressure difference of the liquid flowing through the two ends of the pipeline. 瞬1 is the pressure value of the liquid flowing through the first end of the pipeline, P 瞬2 is the pressure value of the liquid flowing through the end of the pipeline, △ P 瞬额 It is the rated pressure difference of the liquid flowing through the two ends of the pipeline; The leakage verification operation is: when △ q 瞬 =q 瞬1 -q 瞬2 > △ q 瞬额 , pipeline verification for leaks; in △ q 瞬 is the flow difference of the liquid flowing through the two ends of the pipeline, q 瞬1 is the flow rate of the liquid flowing through the first end of the pipeline, q 瞬2 is the flow rate of the liquid flowing through the end of the pipeline, △ q 瞬额 It is the rated flow difference of liquid flowing through the two ends of the pipeline.

[0012] In step six, the local monitoring system is also connected to a remote control center for receiving monitoring and statistical analysis results to achieve remote monitoring.

[0013] Beneficial effects of the present invention: The remote liquid supply system monitoring method provided by the present invention respectively monitors the pressure, flow, temperature and whether the remote liquid supply inlet, return and water pipelines at both ends of the three pipelines, namely, the inlet, return and water pipelines, and whether the pipelines are leaking, and other data, and uploads them to a data acquisition device, and then uploads them to a local monitoring system through the data acquisition device; the local monitoring system compares and analyzes the pressure, flow and temperature data monitored at both ends of the inlet, return and water pipelines, and performs calculations on the leakage detection data on the pipelines, and analyzes the calculation results to determine whether the pipelines are leaking. If there is leakage or impact and the specific leakage location is determined, an alarm will be issued and the gate valves installed along the three remote liquid supply pipelines, return pipeline and water pipeline will be opened and closed at the same time, which can facilitate closed-loop control such as maintenance. Once a leakage or other abnormal situation occurs, the system can immediately issue an alarm to effectively prevent potential safety accidents; and the local monitoring system can count the flow of the three pipelines, namely the inlet, return pipeline and water pipeline, the liquid consumption of the working face and the loss along the pipeline through statistical analysis and calculation, which is helpful to evaluate the liquid consumption of the working face and the loss along the pipeline, optimize the use of fluid and reduce waste; it also effectively reduces the reliance on manual inspections, especially in harsh environments such as underground, reducing the labor intensity and work risks of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a diagram of the remote liquid supply and inlet monitoring system of the present invention.

[0015] Figure 2 It is a diagram of the remote liquid supply and return monitoring system of the present invention.

[0016] Figure 3 It is a diagram of the remote liquid supply and water inlet monitoring system of the present invention. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Example

[0018] In view of the problems raised in the above background technology, this embodiment provides a remote liquid supply system monitoring method, including a data acquisition device and a local monitoring system, characterized in that it includes the following steps: Step 1: Install sensor groups on both ends of the inlet pipeline, return pipeline and water inlet pipeline of the remote liquid supply pipeline. The sensor groups are connected to a data acquisition device. The data acquisition device detects the pressure, temperature and flow rate in the pipelines at both ends of each pipeline in real time through the sensor groups. The sensor groups include pressure sensors, temperature sensors and flow sensors. Step 2: Install a liquid leakage detection unit on each pipeline between the sensor groups at both ends, and connect it to a data acquisition device to detect the specific leakage position of the remote liquid supply pipeline in real time. The liquid leakage detection unit includes a plurality of liquid leakage detection devices arranged at intervals along the pipeline, and the liquid leakage detection device is connected to the data acquisition device; Step 3: An electrically controlled gate valve is arranged at intervals on the liquid inlet pipeline, the liquid return pipeline and the water inlet pipeline, and the electrically controlled gate valve is connected to a data acquisition device to control the opening and closing of the pipeline; Step 4: Connect the data acquisition device to the local monitoring system. The local monitoring system obtains the leakage conditions of the leakage detection units of each pipeline and the pressure values, flow values ​​and temperature values ​​at both ends of each pipeline through the data acquisition device, performs statistical analysis and calculations, determines whether there is an abnormal state in the pipeline, and controls the opening and closing operations of the electric control gate valve on the pipeline according to the judgment results. Specifically: The abnormal state includes abnormal liquid supply state, abnormal impact state and abnormal liquid leakage state. The local monitoring system judges whether there is abnormal liquid supply state and abnormal impact state in the pipeline according to the pressure values, flow values ​​and temperature values ​​at both ends of each pipeline, and controls the opening and closing operation of the electric control gate valve on the pipeline according to the judgment result; the judgment of abnormal liquid supply state includes leakage judgment operation and leakage verification operation. The local monitoring system performs leakage judgment operation according to the pressure values ​​at both ends of the pipeline. When the leakage judgment operation result is that there is leakage in the pipeline, the local monitoring system performs leakage verification operation according to the flow values ​​at both ends of the pipeline. The leakage judgment operation is: when △ P 瞬 =P 瞬1 -P 瞬2 > △ P 瞬额 , there is a leak in the pipeline.

[0019] in △ P 瞬 P is the pressure difference of the liquid flowing through the two ends of the pipeline. 瞬1 is the pressure value of the liquid flowing through the first end of the pipeline, P 瞬2 is the pressure value of the liquid flowing through the end of the pipeline, △ P 瞬额 It is the rated pressure difference of the liquid flowing through the two ends of the pipeline; The leakage verification operation is: when △ q 瞬 =q 瞬1 -q 瞬2 > △ q 瞬额 , pipeline verification for leaks; in △ q 瞬 is the flow difference of the liquid flowing through the two ends of the pipeline, q瞬1 is the flow rate of the liquid flowing through the first end of the pipeline, q 瞬2 is the flow rate of the liquid flowing through the end of the pipeline, △ q 瞬额 The rated flow difference between the two ends of the pipeline. △ q 瞬 =0L / min, but due to the safety valve unloading in the pipeline, △ q 进瞬额 >0L / min, the specific value is the safety valve unloading flow, which is a fixed value; therefore, when the flow difference between the beginning and the end of the pipeline is △ q 进瞬 =q 进瞬1 -q 进瞬2 > △ q 进瞬额 When the pipeline is leaking, it can be verified and confirmed whether there is an abnormal liquid supply state in the pipeline.

[0020] The calculation for judging the impact abnormal state is: when △ t 瞬 =t 瞬2 -t 瞬1 > △ t 瞬额 , there is impact in the pipeline; in △ t 瞬 is the temperature difference of the liquid flowing through the two ends of the pipeline, t 瞬1 is the temperature of the liquid flowing through the first end of the pipeline, t 瞬2 is the temperature of the liquid flowing through the end of the pipeline, △ t 瞬额 It is the rated temperature difference of the liquid flowing through the two ends of the pipeline. In theory, due to the friction and other reasons when the liquid flows through the pipeline, heat will be generated, causing the temperature of the liquid along the remote supply pipeline to rise. △ t 瞬额 >0℃, the specific value is a fixed value; therefore, when the temperature difference between the beginning and the end of the pipeline is △ t 瞬 =t 瞬2 -t 瞬1 > △ t 瞬额 When the pipeline is impacted, it can be determined that there is an impact, causing the liquid in the pipeline to heat up and exceed the rated temperature, thereby monitoring whether there is an abnormal impact state in the pipeline.

[0021] Step 5: While the local monitoring system controls the opening and closing of the electric gate valve on the pipeline according to the judgment result, the local monitoring system will simultaneously issue an abnormal state alarm prompt; Specific example: Figure 1 As shown in the figure, when monitoring the inlet pipeline, the inlet flows through the head end and the end into the coal mining face. The pressure sensor Y installed at the head end of the inlet pipeline 进1 Flow sensor Q 进1 、Temperature sensor T 进1 The pressure value of the inlet liquid at the first end of the inlet pipeline is detected as P 进瞬1 , flow value q 进瞬1 , temperature value t 进瞬1 ;Pressure sensor Y installed at the end of the liquid inlet pipeline 进2 Flow sensor Q 进2 , Temperature sensor T 进2 The pressure value of the liquid at the end of the liquid inlet pipeline is detected as P 进瞬2 , flow value q 进瞬2 , temperature value t 进瞬2 , and upload to data acquisition device F1, data acquisition device F n , by data acquisition device F1, data acquisition device F n Upload to local monitoring system B, which performs statistical analysis and calculations.

[0022] First, the local monitoring system performs leakage judgment calculation based on the pressure values ​​at both ends of the inlet pipeline: when △ P 进瞬 =P 进瞬1 -P 进瞬2 > △ P 进瞬额 , it indicates that there is a leak in the remote liquid supply inlet pipeline. The local monitoring system performs leakage verification calculations based on the flow values ​​at both ends of the pipeline: when △ q 进瞬 =q 进瞬1 -q 进瞬2 > △ q 进瞬额 , it indicates that there is a leak in the remote liquid supply inlet pipeline verification. The local monitoring system controls the electric control gate valve on the inlet pipeline to close according to the judgment result. At the same time, the local monitoring system will synchronously issue an alarm prompt for abnormal leakage status. For example: when there is a leak in the remote liquid supply inlet pipeline, the local monitoring system B controls the electric control gate valve Z on the inlet pipeline. 进1 Or electric gate valve Z 进n Open and close the gate valve Z 进1 Or electric gate valve Z 进n The pipelines on both sides are dismantled and repaired; after the repair is completed, the local monitoring system B controls the electric gate valve Z 进1 or Z 进n Perform the reset-on operation.

[0023] Secondly, the local monitoring system performs shock abnormality judgment calculation based on the temperature values ​​at both ends of the inlet pipeline: when △ t 进瞬 =t 进瞬2 -t 进瞬1 > △ t 进瞬额 , it indicates that there is an impact in the remote liquid supply inlet pipeline. The local monitoring system controls the electric control gate valve on the inlet pipeline to close according to the judgment result. At the same time, the local monitoring system will synchronously issue an impact abnormal status alarm prompt.

[0024] like Figure 2 As shown in the figure, when monitoring the return liquid pipeline, the return liquid flows through the head end and flows into the emulsion tank through the end end. The pressure sensor Y installed at the head end of the return liquid pipeline 回2 Flow sensor Q 回2 , Temperature sensor T 回2 The pressure value of the return liquid at the first end of the return liquid pipeline is detected as P 回瞬2 , flow value q 回瞬2 , temperature value t 回瞬2 ;Pressure sensor Y installed at the end of the return line 回1 Flow sensor Q 回1 , Temperature sensor T 回1 The pressure value of the return liquid at the end of the return liquid pipeline is detected as p 回瞬1 , flow value q 回瞬1 , temperature value t 回瞬1 , and upload to data acquisition device F1, data acquisition device F n , by data acquisition device F1, data acquisition device F n Upload to local monitoring system B, which performs statistical analysis and calculations.

[0025] First, the local monitoring system performs leakage judgment calculation based on the pressure values ​​at both ends of the return liquid pipeline: when △ P 回瞬 =P 回瞬2 -P 回瞬1 > △ P 液瞬额 , it indicates that there is a leak in the remote liquid supply and return pipeline. The local monitoring system performs leakage verification calculations based on the flow values ​​at both ends of the pipeline: when △ q 回瞬 =q 液瞬2 -q 液瞬1 > △ q 液瞬额, it indicates that there is a leak in the remote liquid supply and return pipeline verification. The local monitoring system controls the electric control gate valve on the return pipeline to close according to the judgment result. At the same time, the local monitoring system will synchronously issue an alarm prompt for abnormal leakage status. For example: when there is a leak in the remote liquid supply and return pipeline, the local monitoring system B controls the electric control gate valve Z on the return pipeline to close. 回1 Or electric gate valve Z 回n Perform closing operation to enable electric gate valve Z 回1 Or electric gate valve Z 回n The pipelines on both sides are dismantled and repaired; after the repair is completed, the local monitoring system B controls the electric gate valve Z 回1 Or electric gate valve Z 回n Perform the reset-on operation.

[0026] Secondly, the local monitoring system performs shock abnormality judgment calculation based on the temperature values ​​at both ends of the return liquid pipeline: when △ t 回瞬 =t 回瞬1 -t 回瞬2 > △ t 液瞬额 , it indicates that there is an impact in the remote liquid supply and return pipeline. The local monitoring system controls the electric control gate valve on the return pipeline to close according to the judgment result. At the same time, the local monitoring system will synchronously issue an impact abnormal status alarm prompt.

[0027] like Figure 3 As shown in the figure, when monitoring the water inlet pipeline, the water flows through the head end and the end into the coal mining face. The pressure sensor Y installed at the head end of the water inlet pipeline 水1 Flow sensor Q 水1 , Temperature sensor T 水1 The pressure value of the water entering the water inlet pipe is detected as P 水瞬1 , flow value q 水瞬1 , temperature value t 水瞬1 ;Pressure sensor Y installed at the end of the water inlet pipe 水2 Flow sensor Q 水2 , Temperature sensor T 水2 The pressure value of the water entering the water inlet pipe end is detected as P 水瞬2 , flow value q 水瞬2 , temperature value t 水瞬2 , and the detected values ​​are uploaded to the data acquisition device F1 and the data acquisition device F n , by data acquisition device F1, data acquisition device F n The detection values ​​are uploaded to the local monitoring system B, which performs statistical analysis and calculations.

[0028] First, the local monitoring system performs leakage judgment calculation based on the pressure values ​​at both ends of the water inlet pipeline: when △ P 水瞬 =P 水瞬1 -P 水瞬2 > △ P 水瞬额 , it indicates that there is a leak in the remote liquid supply water inlet pipeline. The local monitoring system performs leakage verification calculations based on the flow values ​​at both ends of the pipeline: when △ q 水瞬 =q 水瞬1 -q 水瞬2 > △ q 水瞬额 , it indicates that there is a leak in the remote liquid supply water inlet pipeline verification. The local monitoring system controls the electric control gate valve on the water inlet pipeline to close according to the judgment result. At the same time, the local monitoring system will synchronously issue an alarm prompt for abnormal leakage status. For example, when there is a leak in the remote liquid supply water inlet pipeline, the local monitoring system B controls the electric control gate valve Z on the water inlet pipeline. 水1 Or electric gate valve Z 水n Perform closing operation to enable electric gate valve Z 水1 Or electric gate valve Z 水n The pipelines on both sides are dismantled and repaired; after the repair is completed, the local monitoring system B controls the electric gate valve Z 水1 Or electric gate valve Z 水n Perform the reset-on operation.

[0029] Secondly, the local monitoring system performs shock abnormality judgment calculation based on the temperature values ​​at both ends of the water inlet pipe: when △ t 水瞬 =t 水瞬2 -t 水瞬1 > △ t 水瞬额 , it indicates that there is an impact in the remote liquid supply water inlet pipeline. The local monitoring system controls the electric control gate valve on the water inlet pipeline to close according to the judgment result. At the same time, the local monitoring system will synchronously issue an impact abnormal status alarm prompt.

[0030] During the monitoring process, the local monitoring system confirms the leakage position of each pipeline based on whether it has received the leakage condition sent by the leakage detection unit of each pipeline. When receiving the leakage condition sent by the leakage detection unit, the local monitoring system performs statistical analysis and calculation according to the leakage condition, determines the position of the pipeline leakage point, and controls the corresponding electric control gate valve to open and close according to the position of the pipeline leakage point. The leakage detection unit includes a plurality of leakage detection devices arranged at intervals along the pipeline, which are used to perform segmented detection on the pipeline, and the leakage detection device is connected to the data acquisition device.

[0031] like Figure 1As shown in the figure, when the liquid inlet pipeline is monitored, the liquid inlet flows through the head end of the liquid inlet pipeline and flows into the coal mining face through the end. The leakage detection device J installed on the liquid inlet pipeline 进1 , Leakage detection device J 进2 , Leakage detection device J 进n-1 , Leakage detection device J 进n , respectively detect whether there is leakage in the pipeline along the liquid inlet line. If there is leakage, the leakage detection device uploads the collected leakage signal to the data acquisition device F1 and the data acquisition device F n , by data acquisition device F1, data acquisition device F n Upload to local monitoring system B, which performs statistical analysis and calculations to determine the specific area of ​​the pipeline where the leakage point is located, and displays the leakage point area and specific location on the local monitoring system, prompting maintenance; and the local monitoring system controls the electric control gate valve in the leakage area to close the pipelines at both ends of the leakage area for maintenance operations. For example: Leakage detection device on the liquid inlet pipeline Leakage detection device J 进1 Or leakage detection device J 进2 Monitor the pipeline for leakage. At this time, the monitored leakage information is uploaded to the data acquisition device F1, and then uploaded to the local monitoring system B by the data acquisition device F1. The leakage area and specific address are displayed on the local monitoring system. At this time, the local monitoring system B prompts to inspect the leakage area. At this time, the local monitoring system B controls the electric control gate valve Z in the leakage area. 进1 Close to allow leakage detection device J 进1 , Leakage detection device J 进2 Repair the leaking area.

[0032] like Figure 2 As shown, when monitoring the return liquid pipeline, the return liquid flows through the head end of the return liquid pipeline and flows into the emulsion tank through the end. The leakage detection device J installed in the return liquid pipeline 回1 , Leakage detection device J 回2 , Leakage detection device J 回n-1 , Leakage detection device J 回n , respectively detect whether there is leakage in the return line pipeline. If there is leakage, the leakage detection device uploads the collected leakage signal to the data acquisition device F1 and the data acquisition device F n , by data acquisition device F1, data acquisition device F n Upload to local monitoring system B, which performs statistical analysis and calculations to determine the specific area of ​​the pipeline where the leakage point is located, and displays the leakage point area and specific location on the local monitoring system, prompting maintenance; and the local monitoring system controls the electric control gate valve in the leakage area to close the pipelines at both ends of the leakage area for maintenance operations. For example: Leakage detection device J on the return liquid pipeline 回1Or leakage detection device J 回2 Monitor the pipeline for leakage. At this time, the monitored leakage information is uploaded to the data acquisition device F1, and then uploaded to the local monitoring system B by the data acquisition device F1. The leakage area and specific address are displayed on the local monitoring system B. At this time, the local monitoring system B prompts to inspect the leakage area. At this time, the local monitoring system B controls the electric control gate valve Z in the leakage area 回1 Close to allow leakage detection device J 回1 , Leakage detection device J 回2 Repair the leaking area.

[0033] like Figure 3 As shown in the figure, when the water inlet pipeline is monitored, the water flows through the head end of the water inlet pipeline and flows into the coal mining face through the end. The leakage detection device J installed in the water inlet pipeline 水1 , Leakage detection device J 水2 , Leakage detection device J 水n-1 , Leakage detection device J 水n , respectively detect whether there is leakage in the pipeline along the water inlet. If there is leakage, the leakage detection device uploads the collected leakage signal to the data acquisition device F1, F n , by data acquisition devices F1, F n Upload to local monitoring system B, which performs statistical analysis and calculations to determine the specific area of ​​the pipeline where the leakage point is located, and displays the leakage point area and specific location on the local monitoring system, prompting maintenance; at the same time, local monitoring system B controls the electric control gate valve in the leakage area to close the pipelines at both ends of the leakage area for maintenance operations. For example: Leakage detection device J on the water inlet pipeline 水1 Or leakage detection device J 水2 Monitor the pipeline for leakage. At this time, the monitored leakage information is uploaded to the data acquisition device F1, and then uploaded to the local monitoring system B by the data acquisition device F1. The leakage area and specific address are displayed on the local monitoring system B. At this time, the local monitoring system B prompts to inspect the leakage area. At this time, the local monitoring system B will control the electric control gate valve Z in the leakage area 水1 Close to allow leakage detection device J 水1 , Leakage detection device J 水2 Repair the leaking area.

[0034] Step 6: The local monitoring system will count the flow of the liquid inlet pipeline, liquid return pipeline and water inlet pipeline at regular intervals, and calculate the liquid consumption of the working surface and the loss along the pipeline during this period of time through pipeline flow data analysis. Specifically, when the liquid inlet pipeline is used, the local monitoring system uses the data acquisition device F1 and the data acquisition device F nThe flow rate sensor Q on the inlet pipe will be collected at intervals. 进1 and flow sensor Q 进2 The cumulative flow data V 进1 and V 进2 , and then perform data operations through the following formula: when △ V 进 =V 进1 -V 进2 in △ V 进 It is the accumulated flow rate of liquid consumption in the liquid inlet pipeline.

[0035] Specifically, when it is a liquid return line, the local monitoring system uses the data acquisition device F1 and the data acquisition device F n The flow rate sensor Q on the return liquid pipeline is collected at regular intervals. 回1 and flow sensor Q 回2 The cumulative flow data V 回1 and V 回2 , and then perform data operations through the following formula: when △ V 回 =V 回2 -V 回1 in △ V 回 It is the accumulated flow rate of liquid consumption in the return liquid pipeline.

[0036] Specifically, when it is a water inlet pipeline, the local monitoring system uses data acquisition device F1 and data acquisition device F n Collect the data from the flow sensor Q at intervals 水1 and flow sensor Q 水2 The cumulative flow data V 水1 and V 水2 , and then perform data operations through the following formula: when △ V 水 =V 水1 -V 水2 in △ V 水 It is the accumulated flow of water consumption in the water inlet pipeline.

[0037] Statistical analysis of fluid consumption in coal mining working face: Specifically, the local monitoring system uses the data acquisition device F n The flow rate Q from the flow sensor on the liquid inlet pipeline is collected at regular intervals. 进2 And the flow sensor Q on the return line 回2 The cumulative flow data V 进2 and V回2 , and then perform data operations through the following formula: △ V 工作面 =V 进2 -V 回2， The liquid consumption of coal mining face is obtained.

[0038] The remote liquid supply system monitoring method provided in the present embodiment installs pressure, flow and temperature sensors at both ends of the remote liquid supply inlet, return and water pipelines respectively, monitors the pressure, flow, temperature and other data of the three remote liquid supply inlet, return and water pipelines respectively, and uploads them to the data acquisition device, and then uploads them to the local monitoring system through the data acquisition device; the local monitoring system compares and analyzes the pressure, flow and temperature data monitored at both ends of the three pipelines, and analyzes the results of the calculation to determine whether there is leakage or impact in the pipeline, and alarms and controls the opening and closing of the gate valves installed along the three pipelines, such as the remote liquid supply inlet, return and water pipelines at the same time, which can facilitate closed-loop control such as maintenance, and the local monitoring system can count the flow of the three pipelines, the liquid consumption of the working surface and the loss along the pipeline by statistical analysis and calculation. Example

[0039] The difference between Example 2 and Example 1 is that in step 6, the local monitoring system is also connected to a remote control center for receiving the results of monitoring and statistical analysis and calculation to achieve remote monitoring.

[0040] Preferably, the communication protocol adopted for the sensor groups at both ends of the liquid inlet pipeline, the liquid return pipeline, and the water inlet pipeline, as well as the transmission of data between the leakage detection device and the electric-controlled gate valve along the line and the data acquisition device, and the transmission of data between the data acquisition device and the local monitoring system B is the Modbus communication protocol. This communication protocol is mature and stable, widely used in the field of automation, and supports a variety of physical communication media. In particular, it has significant advantages for application scenarios of remote liquid supply monitoring with high real-time requirements, and can meet the real-time transmission and communication of remote liquid supply data under complex geological conditions underground.

[0041] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A remote liquid supply system monitoring method, characterized in that: The following steps are involved: Step 1: Install sensor groups on both ends of the inlet pipeline, return pipeline and water inlet pipeline of the remote liquid supply pipeline, and connect the sensor groups to a data acquisition device. The data acquisition device detects the pressure, temperature and flow rate in the pipelines at both ends of each pipeline in real time through the sensor groups; Step 2: Install a liquid leakage detection unit on each pipeline between the sensor groups at both ends, and connect a data acquisition device to detect in real time whether there is a liquid leakage position in the remote liquid supply pipeline; Step 3, an electric-controlled gate valve is arranged at intervals on the liquid inlet pipeline, the liquid return pipeline and the water inlet pipeline, and the electric-controlled gate valve is connected to the data acquisition device; Step 4: Connect the data acquisition device to the local monitoring system. The local monitoring system obtains the leakage conditions of the leakage detection units of each pipeline and the pressure values, flow values ​​and temperature values ​​at both ends of each pipeline through the data acquisition device, performs statistical analysis and calculation, determines whether there is an abnormal state in the pipeline, and controls the opening and closing operations of the electric control gate valve on the pipeline according to the judgment result; Step 5: While the local monitoring system controls the opening and closing of the electric gate valve on the pipeline according to the judgment result, the local monitoring system will simultaneously issue an abnormal state alarm prompt; Step six, the local monitoring system will count the flow of the liquid inlet pipeline, liquid return pipeline and water inlet pipeline at regular intervals, and calculate the liquid consumption of the working surface and the loss along the pipeline during this period of time through pipeline flow data analysis.

2. The remote liquid supply system monitoring method according to claim 1, characterized in that: The sensor group in step 1 includes a pressure sensor, a temperature sensor and a flow sensor.

3. The remote liquid supply system monitoring method according to claim 1, characterized in that: The abnormal conditions in step four include abnormal liquid supply conditions, abnormal impact conditions and abnormal leakage conditions. The local monitoring system determines whether there is an abnormal liquid supply condition and an abnormal impact condition in the pipeline according to the pressure values, flow values ​​and temperature values ​​at both ends of each pipeline, and controls the opening and closing operations of the electric-controlled gate valves on the pipeline according to the judgment results; the local monitoring system determines whether the leakage condition is received from the leakage detection unit of each pipeline. When the leakage condition is received from the leakage detection unit, the local monitoring system determines the position of the pipeline leakage point according to the position of the leakage detection, and controls the corresponding electric-controlled gate valve to perform opening and closing operations according to the position of the pipeline leakage point.

4. The remote liquid supply system monitoring method according to claim 3, characterized in that: The impact abnormal state judgment operation is: when △ t 瞬 =t 瞬2 -t 瞬1 > △ t 瞬额 , there is impact in the pipeline; in △ t 瞬 is the temperature difference of the liquid flowing through the two ends of the pipeline, t 瞬1 is the temperature of the liquid flowing through the first end of the pipeline, t 瞬2 is the temperature of the liquid flowing through the end of the pipeline, △ t 瞬额 It is the rated temperature difference of the liquid flowing through the two ends of the pipeline.

5. The remote liquid supply system monitoring method according to claim 3, characterized in that: The abnormal liquid supply state judgment includes leakage judgment operation and leakage verification operation. The local monitoring system performs leakage judgment operation according to the pressure values ​​at both ends of the pipeline. When there is a leakage in the pipeline, the local monitoring system performs leakage verification operation according to the flow values ​​at both ends of the pipeline.

6. The remote liquid supply system monitoring method according to claim 5, characterized in that: The leakage judgment operation is: when △ P 瞬 =P 瞬1 -P 瞬2 > △ P 瞬额 , there is leakage in the pipeline; in △ P 瞬 P is the pressure difference of the liquid flowing through the two ends of the pipeline. 瞬1 is the pressure value of the liquid flowing through the first end of the pipeline, P 瞬2 is the pressure value of the liquid flowing through the end of the pipeline, △ P 瞬额 It is the rated pressure difference of the liquid flowing through the two ends of the pipeline.

7. The remote liquid supply system monitoring method according to claim 5, characterized in that: The leakage verification operation is: when △ q 瞬 =q 瞬1 -q 瞬2 > △ q 瞬额 , pipeline verification for leaks; in △ q 瞬 is the flow difference of the liquid flowing through the two ends of the pipeline, q 瞬1 is the flow rate of the liquid flowing through the first end of the pipeline, q 瞬2 is the flow rate of the liquid flowing through the end of the pipeline, △ q 瞬额 It is the rated flow difference of liquid flowing through the two ends of the pipeline.

8. The remote liquid supply system monitoring method according to claim 1, characterized in that: In step six, the local monitoring system is also connected to a remote control center for receiving monitoring and statistical analysis results to achieve remote monitoring.

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