A geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions

Abstract

The present invention discloses a geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions, including a steam-water separator connected to a production well for separating steam and water from an input heat source carrier, a solid detection and slag removal device being arranged at the bottom of the steam-water separator; a heat exchanger being arranged at the bottom of the steam-water separator; a plurality of high-temperature steam output ports being connected at the upper and top of the steam-water separator, the output end of the heat exchanger and the output end of the high-temperature steam being connected to a geothermal utilization subsystem, the condensed fluid of the geothermal utilization subsystem being gathered to a water injection pipe and injected into a water injection well through the water injection pipe to form a water recycling; the water injection pipe is externally connected to a water quality treatment device to soften the condensed fluid flowing through the water injection pipe. The system operation performance of the present invention is reliable, stable and safe.

Description

Technical Field

[0001] The present invention relates to the technical field of geothermal energy exploitation and comprehensive utilization, and in particular to a geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions. Background Art

[0002] Deep geothermal resources, especially hot dry rocks, are used in thermal energy mining applications. Since the thermal storage resources of this reservoir are relatively abundant and many existing mining technologies are becoming more and more mature, the conditions for development as an alternative renewable clean energy in the future energy market are already in place. The achievements made in the comprehensive development and utilization of geothermal energy around the world in recent decades are sufficient to prove that large-scale mining and extensive comprehensive utilization of deep geothermal energy have the conditions for sustainable development.

[0003] However, in the geothermal utilization system of the prior art, the composition of the heat source carrier extracted from the deep underground geothermal resources through the production well is relatively complex. For example, the heat source carrier often brings out more mud and other solid impurities. During the operation of the system, the mud brought out by the heat source carrier often scales on the equipment it passes through, and due to the inappropriate pH of the heat source carrier, the demand for heat use at the back end cannot be met. In general, the geothermal utilization system of the prior art lacks "digestion" functions such as water quality monitoring, water quality treatment, troubleshooting and slag removal, and the heart function of the intelligent adjustment function, the continuous heating operation stability is poor, and the heat supply is separated and supplied to multiple industries with different types of heat use. When the variables appear during the heat supply, the geothermal energy mining water circulation system of the prior art cannot make intelligent adjustments accordingly, the comprehensive use efficiency is poor, the output heat energy income index is low, and the investment cost performance is not high. Summary of the invention

[0004] In view of the above-mentioned defects, the present invention provides a geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions. First of all, from the perspective of the intelligence of the comprehensive utilization of geothermal energy, it plays a role in the stability of the continuous heating operation. Its specific functions include separating the heat source carriers produced by the production wells for heat supply, and supplying them to multiple industries with different types of heat consumption; the equipment can make intelligent adjustments to the variables that appear when different heat-consuming industries use heat. Secondly, the system has automatic detection and automatic troubleshooting functions during operation. Its specific functions include: automatic detection and automatic slag removal of impurities such as silt and scale brought out by the heat source carrier; real-time monitoring of the water quality pH value, calcium carbonate, etc. of the circulating water carrier, and automatic water quality treatment. The purpose is to reduce the failure rate of equipment operation, to play a role in guaranteeing and promoting the comprehensive utilization and development of geothermal energy from the aspects of technology and equipment.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions, comprising a steam-water separator connected to a production well for separating steam and water from an input heat source carrier, wherein a solid detection and slag removal device is arranged at the bottom of the steam-water separator; a heat exchanger is arranged at the lower part of the steam-water separator; the upper part and the top of the steam-water separator are connected to a plurality of high-temperature steam output ports, the output end of the heat exchanger and the output end of the high-temperature steam are connected to a geothermal utilization subsystem, the condensed fluid of the geothermal utilization subsystem is gathered to an injection pipe and injected into an injection well through the injection pipe to form a water circulation utilization; the injection pipe is externally connected to a water quality treatment device to soften the condensed fluid flowing through the injection pipe.

[0007] As an improvement to the above technical solution, the water injection pipe is provided with a water injection control valve at the point where the condensed fluid of the geothermal utilization subsystem converges so that the condensed fluid is injected into the water injection well after being gathered through the water injection control valve. The water quality treatment equipment is connected in parallel with the water injection pipe, and the water inlet end of the water quality treatment equipment is connected to the water injection pipe at the front end of the water injection control valve, and the water outlet end of the water quality treatment equipment is connected to the water injection pipe at the rear end of the water injection control valve; the water quality treatment equipment is provided with a control valve at the water inlet end, and a check valve at the water outlet end to control the condensed fluid in the water injection pipe to enter the water quality treatment equipment and prevent the treated liquid from flowing back. With this design, the water injection control valve can control the condensed fluid in the water injection pipe located at the front end of the water injection control valve to pass through the water quality treatment equipment in whole or in part, and the condensed fluid can be treated in whole or in part according to the water quality of the system.

[0008] As an improvement to the above technical solution, a water injection pump and a recharge valve are provided on the water injection pipe at the rear end of the water injection control valve to prevent the recharge of the fluid entering the water injection well.

[0009] As an improvement on the above technical solution, the steam-water separator includes a vertical tank body; a solid detection and slag discharge device is provided at the bottom of the steam-water separator; the solid detection and slag discharge device is a rotary screw type slag discharge device, including a slag discharge channel provided at the bottom of the tank body, a screw provided in the slag discharge channel and a motor driving the screw to move; a heat source carrier inlet connected to a production well is provided at the lower part of the tank body, and the heat source carrier inlet is located above the solid detection and slag discharge device; the input end and the output end of the heat exchanger extend out of the steam-water separator; the input end of the heat exchanger is located above the output end of the heat exchanger.

[0010] As an improvement to the above technical solution, the high-temperature steam output port includes a dry-wet steam output port arranged on the upper part of the steam-water separator and a dry steam output port arranged on the top of the steam-water separator, the dry-wet steam output port is connected to the first-stage heat exchanger, and the dry steam output port is connected to the first-stage heat exchanger through a flash tank or directly connected to the first-stage heat exchanger; the waste heat utilization subsystem includes a thermal power generation device and a heat utilization device, two of the thermal power generation devices and a heat utilization device or one thermal power generation device and two heat utilization devices or one thermal power generation device and a heat utilization device are connected in series to form a branch, the thermal power generation device is composed of a thermal power generation unit and a second-stage heat exchanger that provides heat for the thermal power generation unit, and the heat utilization device is composed of a waste heat utilization industrial cluster and a second-stage heat exchanger that provides heat for the waste heat utilization industrial cluster; the first-stage heat exchanger is connected to one or two branches, and the output end of the heat exchanger is connected to a branch; a check valve is provided at the connection between each branch and the water injection pipe to prevent the backflow of condensed fluid in the water injection pipe.

[0011] As an improvement to the above technical solution, the geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions also includes a control system; the control system includes a signal processor, an AI processor connected to the signal processor in communication, a PLC connected to the AI ​​processor in communication, control valves arranged at the heat source carrier inlet, dry and wet steam output, dry steam output, and heat exchanger input, flow valves arranged at the heat exchanger output, dry and wet steam output channel, and dry steam output channel, pressure gauges and thermometers arranged on the top of the steam-water separator, and data acquisition modules arranged underground at the production well outlet, inside the steam-water separator, dry and wet steam output, dry steam output, heat exchanger input, heat exchanger output, water injection pipe, and water injection well entrance; the control valve, flow valve, and motor are connected to the PLC in communication; the data acquisition module and flow valve are connected to the signal processor in communication to transmit the data signal to the signal processor, which is processed into data information by the signal processor and transmitted to the AI ​​processor by the signal processor; the AI ​​processor processes and uploads to the PLC, and the PLC controls the opening and closing of the control valve, flow valve, and motor.

[0012] As an improvement to the above technical solution, the data acquisition module includes sensors for collecting underground temperature, pressure, and heat flow values ​​of production wells, sensors for collecting flow, temperature, and pressure at the outlet of production wells, sensors for collecting temperature, pressure, pH value, and calcium carbonate content inside the steam-water separator, sensors for collecting temperature, pressure, pH value, and flow at the dry and wet steam output ends, the dry steam output end, the heat exchanger input end, and the heat exchanger output end, a bottom solid detection sensor arranged at the bottom of the steam-water separator, a sensor for collecting temperature, pH value, and calcium carbonate content in the water injection pipe, and a sensor for collecting temperature, pH value, and calcium carbonate content at the inlet of the water injection well.

[0013] As an improvement to the above technical solution, a safety valve is also provided on the top of the steam-water separator.

[0014] The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions of the present invention is divided into two parts: a mechanical system and a control system. In the mechanical system, the steam-water separator (main equipment) is based on a large vertical tank container, and the selection of its capacity is determined by comprehensive calculation of parameters such as the outlet flow of the production well, underground thermal energy reserves, heat flow value, and total ground heat consumption. When the equipment is in operation, the heat source flowing through the bottom inlet of the tank is pre-treated and separated by sedimentation and filtration of the tank. The outlet valve at the top of the tank controls the output of dry steam (saturated steam); the middle and upper outlet valve controls the output of dry and wet steam. The inlet and outlet of the middle and lower parts adopt an indirect heat exchange method, and heat is exchanged through a heat exchange medium to output heat. A solid detection and slag discharge device (optional rotary screw slag discharge device) is set at the bottom of the tank to separate and treat impurities such as mud, scale, etc. brought in by the heat source carrier and then discharge them. After the heat carrier of the production well supplies heat energy through heat exchange, a water quality treatment device is configured before it is reinjected into the well. This function is enabled by implementing online detection of pH value, calcium carbonate content, etc. in the main equipment. The acquired parameters are analyzed by AI smart chip and then output operation instructions by PLC. This equipment has a wide range of adaptability to the geological rock composition in different regions. Through the design and configuration in the above manner, the heat source carrier output from the production well can be separated and processed by the main equipment, and heat can be output to the application end in three different ways: dry steam, dry and wet steam, and heat exchange medium. The longer the production operation time, the more stable the water quality, thereby ensuring that the heat extraction and supply system maintains a stable, reliable and safe operating state.

[0015] The control system is designed to ensure the working stability of the separation function of the mechanical system, and special automatic detection and automatic troubleshooting functions are designed. Other instruments, auxiliary facilities and components are set up around the normal operation of the main core functions of the mechanical system, and are equipped with necessary safety facilities. In order to ensure the reliability and stability of the long-term operation of the equipment, this control system cooperates with the steam-water separator (main equipment) to centrally control the entire heat carrier circulation system in an intelligent manner. The collection of system signals includes (but is not limited to): bottom temperature, pressure, and heat flow value of the well; outlet flow, temperature, and pressure of the production well; internal temperature, pressure, pH value, and calcium carbonate content of the steam-water separator (main equipment), and temperature, pressure, and flow of each output port; solid detection sensor at the bottom of the main equipment, etc. Figure 3As shown, the collected information is converted into data information through signal processing, forming a unified format signal input to the AI ​​processor (chip), and the calculation analysis and comparison are performed one by one, and the processing is performed according to the preset comparative analysis and calculation process program. The processing process can be programmed in a variety of different programming languages. The AI ​​processor will process the analysis conclusion signal and then transmit it to the programmable controller (PLC) respectively, and send execution command signals to each actuator through the PLC. Implement operational control on actuators such as control valves and motors. The specific programming content and preset parameter values ​​of each actuator will be completed in the specific project design stage.

[0016] Compared with the prior art, the present invention has the following advantages and positive effects:

[0017] The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions of the present invention solves the problem of how to effectively separate and distribute the heat source output from the production wells. At the same time, it can realize the separation and processing of the heat source carriers output from the production wells through the main equipment, and output heat to the application end in three different ways: dry steam, dry and wet steam, and heat exchange medium, which can meet the industrial needs of different heat use forms. As a heating equipment, this system has specially added intelligent control systems, automatic detection and automatic troubleshooting functions. The control system converts the collected information into data information through signal processing, forms a unified format signal, and then inputs it into the AI ​​processor (chip), performs calculation analysis and comparison one by one, and processes it according to the preset comparative analysis calculation process program, so as to achieve reliable, stable and safe operation performance, and will not affect the back-end heat use demand due to the pH or solid impurities of the heat source carriers output from the production wells. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the system composition of the present invention;

[0019] Figure 2 It is a schematic diagram of the control principle of the present invention;

[0020] Figure 3 A schematic diagram of a flow chart for performing judgment and analysis for the control system of the present invention;

[0021] Figure 4 A schematic diagram of the workflow of the control system of the present invention. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field based on the embodiments of the present invention without making any creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly stipulated and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figures 1 to 4 As shown, the geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions of the present invention includes a steam-water separator 1 connected to a production well to separate the input heat source carrier into steam and water, and a solid detection and slag removal device 2 is arranged at the bottom of the steam-water separator 1; a heat exchanger 3 is arranged at the lower part of the steam-water separator 1; the upper part and the top of the steam-water separator 1 are connected to a plurality of high-temperature steam output ports, the output end of the heat exchanger 3 and the output end of the high-temperature steam are connected to a geothermal utilization subsystem, and the condensed fluid of the geothermal utilization subsystem is gathered to the water injection pipe and injected into the water injection well through the water injection pipe to form a water circulation utilization; the water injection pipe is externally connected to a water quality treatment device 4 to soften the condensed fluid flowing through the water injection pipe.

[0028] The water injection pipe is provided with a water injection control valve 5 at the convergence point of the condensed fluid in the geothermal utilization subsystem so that the condensed fluid can be injected into the water injection well after being gathered through the water injection control valve 5. The water quality treatment equipment 4 is connected in parallel with the water injection pipe, and the water inlet end of the water quality treatment equipment 4 is connected to the water injection pipe at the front end of the water injection control valve 5, and the water outlet end of the water quality treatment equipment 4 is connected to the water injection pipe at the rear end of the water injection control valve 5; the water quality treatment equipment 4 is provided with a control valve 6 at the water inlet end, and a check valve 7 at the water outlet end to control the condensed fluid in the water injection pipe to enter the water quality treatment equipment 4 and prevent the treated liquid from flowing back. With this design, the water injection control valve 5 can control the condensed fluid in the water injection pipe located at the front end of the water injection control valve 5 to pass through the water quality treatment equipment in whole or in part, and the condensed fluid can be treated in whole or in part according to the water quality of the system. At the rear end of the water injection control valve 5, the water injection pipe is provided with a water injection pump and a recharge valve to prevent the fluid entering the water injection well from being recharged. The steam-water separator 1 includes a vertical tank body; a solid detection and slag discharge device 2 is arranged at the bottom of the steam-water separator 1; the solid detection and slag discharge device 2 is a rotary screw type slag discharge device, including a slag discharge channel arranged at the bottom of the tank body, a screw arranged in the slag discharge channel and a motor driving the screw to move; a heat source carrier inlet connected to the production well is arranged at the lower part of the tank body, and the heat source carrier inlet is located above the solid detection and slag discharge device 2; the input end and the output end of the heat exchanger 3 extend out of the steam-water separator 1; the input end of the heat exchanger 3 is located above the output end of the heat exchanger 3.

[0029] The high-temperature steam outlet comprises a dry-wet steam outlet arranged on the upper part of the steam-water separator 1 and a dry steam outlet arranged on the top of the steam-water separator 1, the dry-wet steam outlet is connected to the first-stage heat exchanger 8, and the dry steam outlet is connected to the first-stage heat exchanger 8 through the flash tank 9 or directly connected to the first-stage heat exchanger 8; the waste heat utilization subsystem comprises a thermal power generation device 10, a heat utilization device 11, two thermal power generation devices 10 and one heat utilization device 11 or one thermal power generation device 10 and two heat utilization devices 11 or A thermal power generation device 10 and a heat utilization device 11 are connected in series to form a branch. The thermal power generation device 10 consists of a thermal power generation unit and a second-stage heat exchanger that provides heat for the thermal power generation unit, and the heat utilization device 11 consists of a waste heat utilization industrial cluster and a second-stage heat exchanger that provides heat for the waste heat utilization industrial cluster; the first-stage heat exchanger 8 is connected to one or two branches, and the output end of the heat exchanger 3 is connected to a branch; a check valve 7 is provided at the connection between each branch and the water injection pipe to prevent the backflow of condensed fluid in the water injection pipe.

[0030] The geothermal energy development and utilization circulation system with water quality guarantee also includes a control system; the control system includes a signal processor, an AI processor connected to the signal processor in communication, a PLC connected to the AI ​​processor in communication, a control valve 12 arranged at the heat source carrier inlet, the dry and wet steam output end, the dry steam output end, and the heat exchanger input end, a flow valve 13 arranged at the heat exchanger output end, the dry and wet steam output channel, and the dry steam output channel, a pressure gauge and a thermometer arranged on the top of the steam-water separator, and a data acquisition module arranged underground at the production well outlet, inside the steam-water separator, the dry and wet steam output end, the dry steam output end, the heat exchanger input end, the heat exchanger output end, the water injection pipe, and the water injection well entrance. The control valve, flow valve, and motor 14 are connected to the PLC in communication, and the data acquisition module and flow valve are connected to the signal processor in communication to transmit the data signal to the signal processor, which is processed into data information by the signal processor and transmitted to the AI ​​processor by the signal processor, and the AI ​​processor uploads the processed data to the PLC, and the PLC controls the opening and closing of the control valve, flow valve, and motor.

[0031] The data acquisition module includes sensors for collecting underground temperature, pressure, and heat flow values ​​of production wells, sensors for collecting flow, temperature, and pressure at the outlet of production wells, sensors for collecting temperature, pressure, pH value, and calcium carbonate content inside the steam-water separator, sensors for collecting temperature, pressure, and flow at the dry and wet steam output ends, the dry steam output end, the heat exchanger input end, and the heat exchanger output end, a bottom solid detection sensor arranged at the bottom of the steam-water separator, a sensor for collecting temperature, pH value, and calcium carbonate content in the water injection pipe, and a sensor for collecting temperature, pH value, and calcium carbonate content at the inlet of the water injection well. A safety valve 15 is also arranged at the top of the steam-water separator 1.

[0032] The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions of the present invention is divided into two parts: a mechanical system and a control system. In the mechanical system, the steam-water separator (main equipment) is based on a large vertical tank container, and the selection of its capacity is determined by comprehensive calculation of parameters such as the outlet flow of the production well, underground thermal energy reserves, heat flow value, and total ground heat consumption. When the equipment is in operation, the heat source flowing through the bottom inlet of the tank is pre-treated and separated by sedimentation and filtration of the tank. The outlet valve at the top of the tank controls the output of dry steam (saturated steam); the middle and upper outlet valve controls the output of dry and wet steam. The inlet and outlet of the middle and lower parts adopt an indirect heat exchange method, and heat is exchanged through a heat exchange medium to output heat. A solid detection and slag discharge device (optional rotary screw slag discharge device) is set at the bottom of the tank to separate and treat impurities such as mud, scale, etc. brought in by the heat source carrier and then discharge them. After the heat carrier of the production well supplies heat energy through heat exchange, a water quality treatment device is configured before it is reinjected into the well. This function is enabled by implementing online detection of pH value, calcium carbonate content, etc. in the main equipment. The acquired parameters are analyzed by AI smart chip and then output operation instructions by PLC. This equipment has a wide range of adaptability to the geological rock composition in different regions. Through the design and configuration in the above manner, the heat source carrier output from the production well can be separated and processed by the main equipment, and heat can be output to the application end in three different ways: dry steam, dry and wet steam, and heat exchange medium. The longer the production operation time, the more stable the water quality, thereby ensuring that the heat extraction and supply system maintains a stable, reliable and safe operating state.

[0033] The control system is designed to ensure the working stability of the separation function of the mechanical system, and special automatic detection and automatic troubleshooting functions are designed. Other instruments, auxiliary facilities and components are set up around the normal operation of the main core functions of the mechanical system, and are equipped with necessary safety facilities. In order to ensure the reliability and stability of the long-term operation of the equipment, this control system cooperates with the steam-water separator (main equipment) to centrally control the entire heat carrier circulation system in an intelligent manner. The collection of system signals includes (but is not limited to): bottom temperature, pressure, and heat flow value of the well; outlet flow, temperature, and pressure of the production well; internal temperature, pressure, pH value, and calcium carbonate content of the steam-water separator (main equipment), and temperature, pressure, and flow of each output port; solid detection sensor at the bottom of the main equipment, etc. Figure 3As shown, the collected information is converted into data information through signal processing, forming a unified format signal input to the AI ​​processor (chip), and the calculation analysis and comparison are performed one by one, and the processing is performed according to the preset comparative analysis and calculation process program. The processing process can be programmed in a variety of different programming languages. The AI ​​processor will process the analysis conclusion signal and then transmit it to the programmable controller (PLC) respectively, and send execution command signals to each actuator through the PLC. Implement operational control on actuators such as control valves and motors. The specific programming content and preset parameter values ​​of each actuator will be completed in the specific project design stage.

[0034] In the present invention, the core point of the main equipment (steam-water separator) is to serve as the "heart" of the heating system with intelligent regulation function, and the auxiliary facilities (equipment, parts, etc.) such as sensors, instruments, and drive devices used in conjunction with it are spread throughout the system. Among them, the well logging temperature and pressure instruments are installed in the artificially constructed working chamber underground.

[0035] The main equipment is based on a large vertical tank container, and the size of its capacity should be selected based on the comprehensive calculation of the parameters such as the outlet flow of the production well, underground thermal energy reserves, heat flow value, and total ground heat consumption. When the equipment is working, the heat source flowing through the bottom inlet of the tank is pre-treated and separated by sedimentation and filtration of the tank. The top outlet of the tank controls the output of dry steam (saturated steam); the middle and upper outlet controls the output of dry and wet steam. The inlet and outlet of the middle and lower parts adopt indirect heat exchange, and heat is output through heat exchange medium. A solid detection and slag discharge device (rotating screw slag discharge device can be optionally equipped) is set at the bottom of the tank to separate and treat impurities such as mud, scale, etc. brought in by the heat source carrier and then discharge them. After the design and configuration of the above method, the heat source carrier produced by the production well can be separated and treated by the main equipment, and the heat can be output to the application end in three different ways: dry steam, dry and wet steam, and heat exchange medium. In order to ensure the working stability of its separation function, automatic detection and automatic troubleshooting functions are specially designed. Other instruments, auxiliary facilities and components are all set up around the normal operation of the main core functions of this equipment, and are equipped with necessary safety facilities. In order to ensure the reliability and stability of the long-term operation of the equipment, an intelligent control system, namely the control system part, is specially added to this equipment.

[0036] The control system is a central control for the intelligent implementation of the entire heat carrier circulation system in cooperation with the main equipment. The collection of system signals includes (but is not limited to) the temperature, pressure, and heat flow value at the bottom of the well; the flow rate, temperature, and pressure at the outlet of the production well; the temperature, pressure, pH value, and calcium carbonate content of the main equipment, the temperature, pressure, and flow rate of each output port; the solid detection sensor at the bottom of the main equipment, etc. The collected information is converted into data information through signal processing to form a unified format signal input to the AI ​​processor (chip), and the calculation, analysis, and comparison are performed one by one, and the processing is performed according to the preset comparative analysis and calculation process program. The processing process can use a variety of different programming languages ​​for programming. The AI ​​processor will process the analysis conclusion signal and then transmit it to the programmable controller (PLC) respectively, and send execution command signals to each actuator through the PLC. Implement operation control on actuators such as control valves and motors. The specific programming content and preset parameter values ​​of each actuator will be completed in the specific project design stage. This patent provides solutions in terms of application principles, implementation methods, operation procedures, and system structure design. During the specific implementation of the project, this plan will be used as a guide, and the engineering and construction designs of different disciplines will be completed with reference to the on-site survey data.

[0037] The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions of the present invention solves the problem of how to effectively separate and distribute the heat source output from the production wells. At the same time, it can realize the separation and processing of the heat source carriers output from the production wells through the main equipment, and output heat to the application end in three different ways: dry steam, dry and wet steam, and heat exchange medium, which can meet the industrial needs of different heat use forms. As a heating equipment, this system has specially added intelligent control systems, automatic detection and automatic troubleshooting functions. The control system converts the collected information into data information through signal processing, forms a unified format signal, and then inputs it into the AI ​​processor (chip), performs calculation analysis and comparison one by one, and processes it according to the preset comparative analysis calculation process program, so as to achieve reliable, stable and safe operation performance, and will not affect the back-end heat use demand due to the pH or solid impurities of the heat source carriers output from the production wells.

[0038] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions, characterized by: It includes a steam-water separator connected to a production well for separating steam and water from an input heat source carrier, a solid detection and slag removal device is provided at the bottom of the steam-water separator; a heat exchanger is provided at the bottom of the steam-water separator; the upper part and the top of the steam-water separator are connected to a plurality of high-temperature steam output ports, the output end of the heat exchanger and the output end of the high-temperature steam are connected to a geothermal utilization subsystem, the condensed fluid of the geothermal utilization subsystem is gathered to a water injection pipe and injected into a water injection well through the water injection pipe to form a water recycling; the water injection pipe is externally connected to a water quality treatment device to soften the condensed fluid flowing through the water injection pipe; The steam-water separator comprises a vertical tank body; the solid detection slag discharge device is a rotary screw type slag discharge device, comprising a slag discharge channel arranged at the bottom of the tank body, a screw arranged in the slag discharge channel and a motor driving the screw to move; a heat source carrier inlet connected to the production well is arranged at the lower part of the tank body, and the heat source carrier inlet is located above the solid detection slag discharge device; the input end and the output end of the heat exchanger extend out of the steam-water separator; the input end of the heat exchanger is located above the output end of the heat exchanger; The high-temperature steam outlet comprises a dry-wet steam outlet arranged on the upper part of the steam-water separator and a dry steam outlet arranged on the top of the steam-water separator, the dry-wet steam outlet is connected to the first-stage heat exchanger, and the dry steam outlet is connected to the first-stage heat exchanger through a flash tank or directly connected to the first-stage heat exchanger; the waste heat utilization subsystem comprises a thermal power generation device and a heat utilization device, two of the thermal power generation devices and a heat utilization device or one thermal power generation device and two heat utilization devices or one thermal power generation device and a heat utilization device are connected in series to form a branch, the thermal power generation device is composed of a thermal power generation unit and a second-stage heat exchanger providing heat for the thermal power generation unit, and the heat utilization device is composed of a waste heat utilization industrial cluster and a second-stage heat exchanger providing heat for the waste heat utilization industrial cluster; the first-stage heat exchanger is connected to one or two branches, and the output end of the heat exchanger is connected to a branch; a check valve is provided at the connection between each branch and the water injection pipe to prevent the backflow of the condensed fluid in the water injection pipe; The water injection pipe is provided with a water injection control valve at the convergence point of the condensed fluid of the geothermal utilization subsystem so that the condensed fluid can be injected into the water injection well after being gathered through the water injection control valve. The water quality treatment equipment is connected in parallel with the water injection pipe. The water inlet end of the water quality treatment equipment is connected to the water injection pipe at the front end of the water injection control valve, and the water outlet end of the water quality treatment equipment is connected to the water injection pipe at the rear end of the water injection control valve. The water quality treatment equipment is provided with a control valve at the water inlet end and a check valve at the water outlet end to control the condensed fluid in the water injection pipe to enter the water quality treatment equipment and prevent the treated liquid from flowing back. At the rear end of the water injection control valve, a water injection pump and a recharging valve are arranged on the water injection pipe.

2. The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions according to claim 1, characterized in that: The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions also includes a control system; the control system includes a signal processor, an AI processor connected to the signal processor in communication, a PLC connected to the AI ​​processor in communication, control valves arranged at the heat source carrier inlet, dry and wet steam output, dry steam output, and heat exchanger input, flow valves arranged at the heat exchanger output, dry and wet steam output channel, and dry steam output channel, pressure gauges and thermometers arranged on the top of the steam-water separator, and data acquisition modules arranged underground at the production well outlet, inside the steam-water separator, dry and wet steam output, dry steam output, heat exchanger input, heat exchanger output, water injection pipe, and water injection well entrance; the control valve, flow valve, and motor are connected to the PLC in communication; the data acquisition module, pressure gauge, thermometer, and flow valve transmit data information to the signal processor, which is processed into data information by the signal processor and transmitted and uploaded to the AI ​​processor by the signal processor; the AI ​​processor uploads the processed data to the PLC, and the PLC controls the opening and closing of the control valve, flow valve, and motor.

3. The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions according to claim 2 is characterized by: The data acquisition module includes sensors for collecting underground temperature, pressure, and heat flow values ​​of production wells, sensors for collecting flow, temperature, and pressure at the outlet of production wells, sensors for collecting temperature, pressure, pH value, and calcium carbonate content inside the steam-water separator, sensors for collecting temperature, pressure, and flow at the dry and wet steam output ends, the dry steam output end, the heat exchanger input end, and the heat exchanger output end, a bottom solid detection sensor arranged at the bottom of the steam-water separator, a sensor for collecting temperature, pH value, and calcium carbonate content in the water injection pipe, and a sensor for collecting temperature, pH value, and calcium carbonate content at the inlet of the water injection well.

4. The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions according to claim 3 is characterized by: A safety valve is also arranged on the top of the steam-water separator.

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