Management system for intelligently filtering fault zone hydrothermal type geothermal extracted water and recharged water

Abstract

The invention discloses a management system for realizing intelligent filtration of fault zone hydrothermal type terrestrial heat extracted water and recharged water, which comprises a fluid dynamic sensing system, a signal fusion conversion system, a signal processing system, a signal processing system, a signal processing system, a signal processing system, a signal processing system, a signal processing system and a signal processing system, and is characterized in that the fluid dynamic sensing system is used for monitoring a filtering line of a filtering system in real time to obtain fluid multivariate data, converting the fluid multivariate data and transmitting to the signal fusion conversion system; the signal fusion conversion system is used for generating a trigger signal according to the converted fluid multivariate data; and the dynamic evaluation level alarm system is used for controlling the intelligent flushing and replacing system according to the trigger signal. Intelligent operation of the processes of monitoring the blocking state of the variable-aperture filter plate, cleaning the percolation net and the filter plate, replacing the pipeline, giving out a hierarchical alarm and the like can be realized, and the system has important significance on guaranteeing long-term efficient filtration and sufficient heat utilization of geothermal water.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent filtration of geothermal water, and particularly relates to a management system for realizing intelligent filtration of hydrothermal geothermal extraction water and reinjection water in fracture zones. Background Art

[0002] Geothermal resources are a kind of renewable clean energy, which has the characteristics of environmental protection, wide application, good stability, recyclability, etc., and is not affected by external factors such as seasons, climate, and day-night changes. It is a competitive new energy. Among them, direct water extraction for heat is the most common development method for hydrothermal geothermal resources in fracture zones. Large-scale geothermal development and direct discharge of tail water will lead to the gradual depletion of geothermal resources and environmental pollution, while geothermal reinjection is the most effective means to solve the above problems. To ensure the normal use of geothermal water, the geothermal water will be filtered before being reinjected into the heat reservoir. By filtering the solid particles in the extracted water and reinjection water, the physical blockage of the channels is reduced, and then the blockage in the filter pipe section is backwashed by high-pressure air and chemical agents. At present, the exploitation and utilization of underground hot water resources are very common, such as heating, bathing, aquaculture, agricultural greenhouses, etc. The energy saved every year is quite huge, which has the advantages of energy conservation, emission reduction, and cost reduction, and has attracted much attention from the world. However, there are still many problems in the exploitation and utilization of geothermal water, mainly how to improve the filtration efficiency of the extracted water and reinjection water after the exploitation and utilization of geothermal water. The current filtration devices have the disadvantages that the filters are easily blocked, the continuous working performance is poor, the automation degree is low, the cost is high and the efficiency is low, and it is difficult to ensure the long-term utilization of geothermal water resources. Therefore, it is necessary to provide an intelligent filtration management system that can be used continuously and has a reliable filtration effect. Summary of the Invention

[0003] To solve the above technical problems, the present invention proposes a management system for realizing intelligent filtration of hydrothermal geothermal extraction water and reinjection water in fracture zones to solve the problems existing in the above prior art.

[0004] To achieve the above object, the present invention provides a management system for realizing intelligent filtration of hydrothermal geothermal extraction water and reinjection water in fracture zones, including: a filtration system, a fluid dynamic perception system, a signal fusion and conversion system, a dynamic evaluation and hierarchical alarm system, and an intelligent flushing and replacement system connected in sequence;

[0005] The fluid dynamic perception system is used to monitor the filtration line of the filtration system in real time, obtain fluid multi-source data, and transmit the transformed fluid multi-source data to the signal fusion and conversion system;

[0006] The signal fusion and conversion system is used to generate a trigger signal according to the transformed fluid multi-source data;

[0007] The dynamic evaluation level alarm system is used to control the intelligent flushing and replacement system according to the trigger signal.

[0008] Optionally, the filtration system includes a pulse negative pressure hydrophobic drainage mechanism, a parallel progressive fine filtration mechanism, and a constant flow drainage mechanism.

[0009] Optionally, the parallel progressive fine filtration structure includes a parallel diverter, a plurality of variable aperture filter plates, and a permeable filter screen.

[0010] Optionally, the fluid dynamic perception system includes a sub-segment induction device and a dynamic signal transmission line; the sub-segment induction device includes a pressure transmitter, a flow sensor, and an electrical signal conversion unit.

[0011] Optionally, the signal fusion and conversion system includes a signal receiving unit, a signal conversion unit, and a signal output unit;

[0012] The signal receiving unit is used to receive the converted fluid multi-source data;

[0013] The signal conversion unit is used to identify, fuse, and convert the fluid multi-source data;

[0014] The signal output unit is used to obtain a trigger signal from the converted result and send it to the dynamic evaluation level alarm system.

[0015] Optionally, the dynamic evaluation level alarm system includes a first-level alarm device and a second-level alarm device; the first-level alarm device and the second-level alarm device are respectively provided with a first-level alarm threshold and a second-level alarm threshold;

[0016] Based on the trigger signal, it is judged whether the alarm threshold is exceeded. If the first-level alarm threshold is not reached, a regulation signal is obtained. If the first-level alarm threshold is reached, a backwash signal issued by the first-level alarm device is obtained;

[0017] If the second-level alarm threshold is reached, a replacement signal issued by the second-level alarm device is obtained.

[0018] Optionally, the intelligent flushing and replacement system includes a precise intelligent backwashing mechanism, a filtration line intelligent switching mechanism, and a filter plate aperture regulation mechanism.

[0019] Optionally, the intelligent flushing and replacement system performs corresponding operations according to the received signal type. If the received signal type is a regulation signal, the filter plate aperture regulation mechanism is triggered to perform intelligent aperture regulation operations on the filter plates of different pipe segments; if the received signal type is a backwash signal, the precise intelligent backwashing mechanism is triggered to perform precise backwashing operations on different pipe segments; if the received signal type is a replacement signal, the filtration line intelligent switching mechanism is triggered to perform a flow path switching operation on the parallel diverter.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] The present invention can monitor parameters such as the fluid pressure, pressure drop, flow rate, and flow velocity of each pipe section in the filtration line in real time, promptly detect abnormal working conditions of different filtration pipe sections and take measures, thereby improving the safety and operation stability of the filtration system; the present invention can combine multi-source data to monitor the operation status of each pipe section, accurately identify abnormal pipe sections and take corresponding measures, which helps to accurately solve corresponding problems and save costs; the present invention can send a trigger signal through the signal fusion and conversion system, enabling the dynamic evaluation hierarchical alarm system to send corresponding signals, so that the intelligent flushing and replacement system can promptly respond to solve problems, reduce equipment maintenance costs and personnel scheduling, and improve production efficiency and resource utilization.

[0022] The present invention deeply integrates the filtration system, fluid dynamic perception system, signal fusion and conversion system, dynamic evaluation hierarchical alarm system, and intelligent flushing and replacement system with the geothermal water filtration process to form an intelligent system for real-time detection, dynamic analysis, intelligent alarm, and automatic replacement, realizing the intelligent operation of processes such as monitoring the blockage state of the filter plate, intelligently regulating the aperture of the filter plate, cleaning the filter screen, and replacing the pipeline, which is of great significance for ensuring the continuous and efficient filtration of geothermal water and its full heat utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0024] Figure 1 is a schematic flow chart of a management system for realizing intelligent filtration of fracture zone hydrothermal geothermal extraction water and reinjection water according to an embodiment of the present invention;

[0025] Figure 2 is a schematic connection diagram of a management system for realizing intelligent filtration of fracture zone hydrothermal geothermal extraction water and reinjection water according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to detail this application.

[0027] It should be noted that the steps shown in the flowchart of the drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0028] As used herein, the term "comprising" and its variants are to be construed as open-ended terms meaning "including but not limited to". The term "based on" is to be construed as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be construed as "at least one embodiment". The term "another embodiment" is to be construed as "at least one other embodiment".

[0029] As Figure 1-2 shown, in this embodiment, a management system for realizing intelligent filtration of hydrothermal geothermal extraction water and re-injection water in a fracture zone is provided, including:

[0030] A filtration system, a fluid dynamic sensing system, a signal fusion and conversion system, a dynamic evaluation level alarm system, and an intelligent flushing and replacement system connected in sequence;

[0031] Further, the filtration system includes a pulsed negative pressure hydrophobic drainage mechanism, a parallel progressive fine filtration mechanism, and a constant flow drainage mechanism.

[0032] Further, the parallel progressive fine filtration structure includes a parallel diverter, a plurality of variable aperture filter plates, and a permeable filter screen.

[0033] Specifically, in the filtration system, when the extraction water re-injection water flows through the filtration system, it will flow through the pulsed negative pressure hydrophobic drainage mechanism, the parallel progressive fine filtration mechanism, and the constant flow drainage mechanism in sequence. Among them, the pulsed negative pressure hydrophobic drainage mechanism uses pulsed jet to generate positive and negative pulsed pressure differences, which can exclude the accumulated water in the system and reduce the harm caused by the impact force of water hammer phenomenon while ensuring normal hydrophobic drainage; the parallel progressive fine filtration mechanism will filter the solid-phase particles of the fluid; the constant flow drainage mechanism maintains the stability of the water supply pressure and keeps the balance between water supply and water use.

[0034] The fluid dynamic sensing system is used to monitor the filtration line of the filtration system in real time, obtain fluid multi-source data, and transmit the converted fluid multi-source data to the signal fusion and conversion system;

[0035] Further, the fluid dynamic sensing system includes a sub-pipe section induction device and a dynamic signal transmission line; the sub-pipe section induction device includes a pressure transmitter, a flow sensor, and an electrical signal conversion unit.

[0036] Specifically, the fluid dynamic perception system is used to monitor and collect multivariate data within the parallel progressive fine filtration mechanism in real time. After the multivariate data is converted into real-time signals by the electrical signal conversion unit, it is sent to the signal fusion and conversion system through the dynamic signal transmission line. The sub-segment induction device therein may include fluid induction devices arranged in different pipe segments. For example, a filtration pipe segment contains equipment such as a fluid pressure transmitter and a flow sensor. When the fluid passes through different filtration pipe segments, these sensors continuously collect the multivariate data of the fluid in the filtration pipe segment and convert it into real-time signals that can be recognized, fused, and processed by the signal fusion and conversion system through the electrical signal conversion unit. The real-time signals are transmitted to the signal fusion and conversion system through the signal transmission line for subsequent recognition and processing.

[0037] The fluid dynamic perception system converts the monitored and collected multivariate data of the fluid into real-time signals and then transports them to the dynamic signal transmission line. The multivariate data of the fluid includes: fluid pressure, pressure drop, flow rate, and flow velocity.

[0038] The signal fusion and conversion system is used to generate a trigger signal based on the converted multivariate data of the fluid;

[0039] Furthermore, the signal fusion and conversion system includes a signal receiving unit, a signal conversion unit, and a signal output unit;

[0040] The signal receiving unit is used to receive the converted multivariate data of the fluid;

[0041] The signal conversion unit is used to identify, fuse, and convert the multivariate data of the fluid, and identify, fuse, and convert the fluid pressure, pressure drop, flow rate, and flow velocity data through an artificial neural network algorithm;

[0042] The signal output unit is used to obtain a trigger signal from the converted result and send it to the dynamic evaluation level alarm system.

[0043] Specifically, the signal fusion and conversion system is used to receive, fuse, and process the real-time signals from the fluid dynamic perception system, and transport the obtained trigger signal after processing to the dynamic evaluation level alarm system.

[0044] The dynamic evaluation level alarm system is used to control the intelligent flushing and replacement system according to the trigger signal.

[0045] Furthermore, the dynamic evaluation level alarm system includes a first-level alarm device and a second-level alarm device; the first-level alarm device and the second-level alarm device are respectively provided with a first-level alarm threshold and a second-level alarm threshold;

[0046] Based on the trigger signal, it is judged whether it exceeds the alarm threshold. If it does not reach the first-level alarm threshold, a regulation signal is obtained. If it reaches the first-level alarm threshold, a backwashing signal sent by the first-level alarm device is obtained;

[0047] If the secondary alarm threshold is reached, a replacement signal sent by the secondary alarm device is obtained.

[0048] Specifically, the primary alarm threshold is comprehensively set according to relevant parameters such as the pressure, pressure drop, flow rate, and flow velocity of the extracted water and the recharged water after being filtered by the filtering device and the compliance requirements for the extracted water and the filtered water in actual engineering. The secondary alarm threshold is based on whether the relevant parameters such as the pressure, pressure drop, flow rate, and flow velocity of the extracted water and the recharged water reach the primary alarm threshold again after the backwashing operation. If the primary alarm threshold is reached, a secondary alarm will be executed. For example, when the trigger signal does not reach the above-mentioned primary alarm threshold, the dynamic evaluation hierarchical alarm system will send a regulation signal; when the trigger signal reaches the above-mentioned primary alarm threshold, the primary alarm device will send a backwashing signal; if the trigger signal can still reach the primary alarm threshold after the backwashing operation, the secondary alarm device will send a replacement signal.

[0049] Furthermore, the intelligent flushing and replacement system includes a precise intelligent backwashing mechanism, an intelligent filtering line switching mechanism, and a filtering plate aperture regulation mechanism.

[0050] Furthermore, the intelligent flushing and replacement system performs corresponding operations according to the received signal type. If the received signal type is a regulation signal, the filtering plate aperture regulation mechanism is triggered to perform intelligent aperture regulation operations on the filtering plates of different pipe segments; if the received signal type is a backwashing signal, the precise intelligent backwashing mechanism is triggered to perform precise backwashing operations on different pipe segments; if the received signal type is a replacement signal, the intelligent filtering line switching mechanism is triggered to perform a flow path switching operation on the parallel diverter.

[0051] Specifically, after receiving the backwashing signal, the coarse filtration pipe segment backwasher will perform a backwashing operation to wash the filter screen and pipeline of the corresponding pipe segment; after receiving the backwashing signal, the fine filtration pipe segment backwasher will perform a backwashing operation to wash the filter screen and pipeline of the corresponding pipe segment. The hierarchical setting of the backwashing device can accurately solve the filtering problems in the filter pipe segments. After receiving the replacement signal sent by the secondary alarm device, the intelligent filtering line switching mechanism will perform a line replacement operation, specifically, the pipeline control valve arranged at the shunt pipe segment switches the line, and the extracted water and the recharged water will flow into another operating line.

[0052] According to the obtained control signals, the intelligent flushing and replacement system triggers the aperture control mechanism of the filter plate to perform intelligent aperture control operations on the filter plates of different pipe sections, achieving precise filtration to ensure that only particulate matter of a specific size can pass through, improving the filtration efficiency and ensuring the filtration effect. At the same time, it can also effectively protect the subsequent pipe section filtration equipment from the influence of large particulate matter and impurities, thereby adapting to geothermal water with different flow rates, flow velocities, sediment contents, etc., solving the small fluctuations brought by geothermal water in different states during the normal filtration process of the filtration system, and maintaining the normal operation of the normal filtration operation. According to the obtained backwashing signal, it triggers the precise intelligent backwashing mechanism to perform precise backwashing operations on different pipe sections, thereby flushing and washing the sediment and scale deposited on the variable-aperture filter plate and the percolation net, and solving the blockage problem of the variable-aperture filter plate and the percolation net. According to the obtained replacement signal, it triggers the intelligent switching mechanism of the filtration line to perform the flow channel switching operation on the parallel flow divider. By changing the flow channel, it solves the blockage of the variable-aperture filter plate and the percolation net that has not been effectively optimized after the backwashing operation, and at the same time can ensure that the extraction and utilization of geothermal water are not affected when the filtration system operates normally in another flow channel.

[0053] The system provided by the present invention deeply integrates the filtration system, the fluid dynamic perception system, the signal fusion and conversion system, the dynamic evaluation level alarm system, and the intelligent flushing and replacement system with the geothermal water filtration process, forming an intelligent system for real-time detection, dynamic analysis, intelligent alarm, and automatic replacement, realizing the intelligent operation of processes such as monitoring the blocking state of the filter plate, intelligently controlling the aperture of the filter plate, cleaning the percolation net, and replacing the pipeline, which is of great significance for ensuring the continuous and efficient filtration of geothermal water and its full heat utilization.

[0054] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A management system for realizing intelligent filtration of fault zone hydrothermal geothermal extraction water and reinjection water, characterized in that: include: The filter system, fluid dynamic sensing system, signal fusion conversion system, dynamic assessment level alarm system and intelligent flushing and replacement system are connected in sequence; The fluid dynamic sensing system is used to monitor the filtration line of the filtration system in real time, obtain fluid multivariate data, and transform the fluid multivariate data and transmit it to the signal fusion conversion system; The signal fusion conversion system is used to generate a trigger signal according to the converted fluid multivariate data; The dynamic evaluation level alarm system is used to control the intelligent flushing and replacement system according to the trigger signal.

2. The management system for realizing intelligent filtration of fault zone hydrothermal geothermal extraction water and reinjection water according to claim 1 is characterized in that: The filtering system comprises a pulse negative pressure hydrophobic drainage mechanism, a parallel progressive fine filtering mechanism and a constant flow drainage mechanism.

3. The management system for realizing intelligent filtration of fracture zone hydrothermal geothermal extraction water and reinjection water according to claim 2 is characterized in that: The parallel progressive fine filtration structure comprises a parallel diverter, a plurality of variable aperture filter plates and a percolation screen.

4. The management system for realizing intelligent filtration of fracture zone hydrothermal geothermal extraction water and reinjection water according to claim 1, characterized in that: The fluid dynamic sensing system includes a branch section sensing device and a dynamic signal transmission line; the branch section sensing device includes a pressure transmitter, a flow sensor and an electrical signal conversion unit.

5. The management system for realizing intelligent filtration of fault zone hydrothermal geothermal extraction water and reinjection water according to claim 1 is characterized in that: The signal fusion conversion system includes a signal receiving unit, a signal conversion unit, and a signal output unit; The signal receiving unit is used to receive the converted fluid multivariate data; The signal conversion unit is used to identify, fuse and convert the fluid multivariate data; The signal output unit is used to obtain a trigger signal from the converted result and send it to the dynamic evaluation level alarm system.

6. The management system for realizing intelligent filtration of fracture zone hydrothermal geothermal extraction water and reinjection water according to claim 1, characterized in that: The dynamic assessment hierarchical alarm system includes a first-level alarm device and a second-level alarm device; the first-level alarm device and the second-level alarm device are respectively provided with a first-level alarm threshold and a second-level alarm threshold; Based on the trigger signal, determine whether the alarm threshold is exceeded, if the first-level alarm threshold is not reached, obtain a control signal, if the first-level alarm threshold is reached, obtain a backwash signal issued by the first-level alarm device; If the second-level alarm threshold is reached, a replacement signal issued by the second-level alarm device is obtained.

7. The management system for realizing intelligent filtration of fault zone hydrothermal geothermal extraction water and reinjection water according to claim 1, characterized in that: The intelligent flushing and replacement system comprises a precise intelligent backwashing mechanism, a filter line intelligent switching mechanism and a filter plate aperture control mechanism.

8. The management system for realizing intelligent filtration of fracture zone hydrothermal geothermal extraction water and reinjection water according to claim 7, characterized in that: The intelligent flushing and replacement system performs corresponding operations according to the type of signal received. If the type of signal received is a control signal, the filter plate aperture control mechanism is triggered to perform the aperture intelligent control operation on the filter plates of different pipe sections; if the type of signal received is a backwash signal, the precise intelligent backwash mechanism is triggered to perform the precise backwash operation on the different pipe sections; if the type of signal received is a replacement signal, the filter line intelligent switching mechanism is triggered to perform the flow channel switching operation on the parallel diverter.

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