Geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions
阅读说明：本技术 一种具有智能监测和除垢功能的地热能开发利用循环系统 (Geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions ) 是由 王川 庄献忠 于 2020-06-26 设计创作，主要内容包括：本发明公开了一种具有智能监测和除垢功能的地热能开发利用循环系统,包括与生产井相连通将输入的热源载体进行汽水分离的汽水分离器,所述汽水分离器的底部设置有固体检测排渣装置；所述汽水分离器的下部设置有换热器；所述汽水分离器的上部和顶部连通有若干个高温蒸汽的输出口,所述换热器的输出端、所述高温蒸汽的输出端连接地热利用子系统,所述地热利用子系统的冷凝流体汇聚到注水管并经注水管注入到注水井以形成水的循环利用；所述注水管外接水质处理设备以对流经注水管的冷凝流体进行软化处理。本发明的系统运行性能可靠、稳定、安全。(The invention discloses a geothermal energy development and utilization circulating system with intelligent monitoring and descaling functions, which comprises a steam-water separator communicated with a production well and used for carrying out steam-water separation on an input heat source carrier, wherein a solid detection deslagging 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 communicated with 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 with a geothermal utilization subsystem, and condensed fluid of the geothermal utilization subsystem is gathered to a water injection pipe and is injected into a water injection well through the water injection pipe to form water recycling; the water injection pipe is externally connected with a water quality treatment device to carry out softening treatment on the condensed fluid flowing through the water injection pipe. The system of the invention has reliable, stable and safe operation performance.)
1. The utility model provides a geothermal energy development utilizes circulation system with intelligent monitoring and scale removal function which characterized in that: the system comprises a steam-water separator which is communicated with a production well and is used for carrying out steam-water separation on an input heat source carrier, wherein a solid detection deslagging 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 communicated with 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 with a geothermal utilization subsystem, and condensed fluid of the geothermal utilization subsystem is gathered to a water injection pipe and is injected into a water injection well through the water injection pipe to form water recycling; the water injection pipe is externally connected with a water quality treatment device to carry out softening treatment on the condensed fluid flowing through the water injection pipe.
2. The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions as claimed in claim 1, wherein: the water injection pipe is provided with a water injection control valve at the condensation fluid gathering part of the geothermal utilization subsystem so that the condensation fluid is gathered and then injected into a water injection well through the water injection control valve, the water quality treatment equipment is connected with the water injection pipe in parallel, 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.
3. The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions as claimed in claim 1, wherein: and a water injection pump and a recharge valve are arranged on the water injection pipe at the rear end of the water injection control valve.
4. The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions according to claim 2, wherein: the steam-water separator comprises a vertical tank body; the solid detection slag discharging device is a rotary screw type slag discharging device and comprises a slag discharging channel arranged at the bottom of the tank body, a screw rod arranged in the slag discharging channel and a motor for driving the screw rod to move; the lower part of the tank body is provided with a heat source carrier inlet communicated with the production well, and the heat source carrier inlet is positioned above the solid detection deslagging 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 positioned above the output end of the heat exchanger.
5. The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions according to claim 4, wherein: the high-temperature steam output port comprises a dry and wet steam output port arranged at the upper part of the steam-water separator and a dry steam output port arranged at the top of the steam-water separator, the dry and wet steam output port is connected with the first-stage heat exchanger, and the dry steam output port is connected with the first-stage heat exchanger through a flash tank or directly connected with the first-stage heat exchanger; the waste heat utilization subsystem comprises thermal power generation devices and heat utilization devices, wherein two thermal power generation devices and one heat utilization device or one thermal power generation device and two heat utilization devices or one thermal power generation device and one heat utilization device are connected in series to form a branch, the thermal power generation device consists of a thermal power generator set and a second-stage heat exchanger for providing heat for the thermal power generator set, and the heat utilization devices consist of a waste heat utilization industry cluster and a second-stage heat exchanger for providing heat for the waste heat utilization industry cluster; the first-stage heat exchanger is connected with one or two branches, and the output end of the heat exchanger is connected with one branch; the junction of each branch and the water injection pipe is provided with a check valve to prevent the backflow of the condensed fluid in the water injection pipe.
6. The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions according to claim 5, wherein: the geothermal energy development and utilization circulating system with the intelligent monitoring and descaling functions further comprises a control system; the control system comprises a signal processor, an AI processor in communication connection with the signal processor, a PLC in communication connection with the AI processor, control valves arranged at the inlet end of a heat source carrier, the output end of dry and wet steam, the output end of dry steam and the input end of a heat exchanger, flow valves arranged at the output end of the heat exchanger, the output channel of the dry and wet steam and the output channel of the dry steam, a pressure gauge and a temperature gauge arranged at the top of a steam-water separator, a data acquisition module arranged underground the production well, at the outlet of the production well, inside the steam-water separator, at the output end of the dry and wet steam, at the output end of the dry steam, at the input end of the heat exchanger, at the output end of the heat exchanger, at the inlet of a water injection pipe and at the water injection well, wherein the control valves, the flow valves and the motors are in communication connection with the PLC, the data acquisition module, the, the AI processor is processed and then uploaded to the PLC, and the PLC controls the opening and closing of the control valve, the flow valve and the motor.
7. The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions as claimed in claim 6, wherein: the data acquisition module is including gathering the sensor of production well underground temperature, pressure, heat current value, gather the sensor of production well export flow, the temperature, pressure, gather the inside temperature of catch water, pressure, the PH value, calcium carbonate content's sensor, gather the sensor of dry and wet steam output, the dry steam output, the heat exchanger input, heat exchanger output temperature, pressure, the sensor of flow, set up in the bottom solid detection inductor of catch water bottom, gather temperature in the water injection pipe, the PH value, calcium carbonate content's sensor, gather water injection well entrance temperature, the PH value, calcium carbonate content's sensor.
8. The geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions according to claim 7, wherein: and a safety valve is also arranged at the top of the steam-water separator.
Technical Field
The invention relates to the technical field of exploitation and comprehensive utilization of geothermal energy, in particular to a geothermal energy development and utilization circulating system with intelligent monitoring and descaling functions.
Background
In the application field of heat energy exploitation of deep geothermal resources, particularly dry hot rocks, as the heat storage resource amount of the reservoir is relatively rich and a plurality of existing exploitation technologies are mature day by day, the deep geothermal resources are provided as development conditions of replaceable renewable clean energy sources in the future energy market. The achievement of global comprehensive development and utilization of geothermal energy in recent decades is enough to prove that the large-scale exploitation and extensive comprehensive utilization of deep geothermal energy are sustainable development conditions.
However, in the geothermal utilization system in the prior art, the components of the heat source carrier pumped out from the underground deep geothermal resource through the production well are relatively complex, for example, the heat source carrier often carries out relatively much silt and other solid impurities, during the operation of the system, the silt carried out by the heat source carrier often scales on the experienced equipment, and the use requirement of rear-end heat cannot be met due to the inappropriate pH value of the heat source carrier. Generally speaking, the geothermal utilization system of prior art lacks water quality monitoring, water quality treatment, arrange "digestion" functions such as sediment of arranging for the obstacle, and intelligent regulatory function's heart function, it is poor to last heat supply work operation stability, when the industry that the heat supply separation supplied with a plurality of different heat types respectively used, the variable that appears when supplying with the heat, the geothermal energy exploitation water circulating system of prior art can not make intelligent adjustment thereupon, comprehensive use efficiency is poor, output heat energy profit index is low, investable cost is not high.
Disclosure of Invention
In view of the above-mentioned drawbacks, the present invention provides a geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions, which firstly plays a role in the stability of continuous heat supply operation in view of the intellectualization of geothermal energy comprehensive utilization. The specific functions of the system comprise that a heat source carrier produced by a production well is subjected to heat supply separation and is respectively supplied to a plurality of industries with different heat utilization types for use; the equipment can be intelligently adjusted according to the variable of different heat utilization industries during heat utilization supply. And the system has automatic detection and automatic obstacle removal functions in the operation process. The specific functions include: the automatic detection and automatic slag discharge functions can be realized on the impurities such as silt, scale and the like brought by the heat source carrier; the pH value of the water quality, calcium carbonate and the like of the circulating water carrier are monitored in real time, and the water quality treatment is automatically carried out. The purpose is through reducing the fault rate of equipment operation, for geothermal energy comprehensive utilization and development, play the effect of guarantee and promotion in the aspect of technique and equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a geothermal energy development and utilization circulating system with intelligent monitoring and descaling functions comprises a steam-water separator communicated with a production well and used for carrying out steam-water separation on an input heat source carrier, wherein a solid detection deslagging 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 communicated with 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 with a geothermal utilization subsystem, and condensed fluid of the geothermal utilization subsystem is gathered to a water injection pipe and is injected into a water injection well through the water injection pipe to form water recycling; the water injection pipe is externally connected with a water quality treatment device to carry out softening treatment on the condensed fluid flowing through the water injection pipe.
As an improvement to the above technical solution, the water injection pipe is provided with a water injection control valve at a condensation fluid convergence position of the geothermal utilization subsystem so that the condensation fluid is converged and then injected into the water injection well through the water injection control valve, the water quality treatment device is connected in parallel with the water injection pipe, a water inlet end of the water quality treatment device is connected to the water injection pipe at the front end of the water injection control valve, and a water outlet end of the water quality treatment device 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. By the design, the water injection control valve can control all or part of condensed fluid in the water injection pipe at the front end of the water injection control valve to pass through the water quality treatment device, and the condensed fluid can be completely or partially treated according to the water quality condition of the system.
As an improvement of the technical scheme, a water injection pump and a recharging valve are arranged on the water injection pipe at the rear end of the water injection control valve, so that fluid entering a water injection well is prevented from being recharged.
As an improvement to the above technical solution, the steam-water separator comprises a vertical tank body; a solid detection deslagging device is arranged at the bottom of the steam-water separator; the solid detection slag discharging device is a rotary screw type slag discharging device and comprises a slag discharging channel arranged at the bottom of the tank body, a screw rod arranged in the slag discharging channel and a motor for driving the screw rod to move; the lower part of the tank body is provided with a heat source carrier inlet communicated with the production well, and the heat source carrier inlet is positioned above the solid detection deslagging 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 positioned above the output end of the heat exchanger.
As an improvement to the above technical solution, the high-temperature steam outlet includes a dry and wet steam outlet disposed at an upper portion of the steam-water separator and a dry steam outlet disposed at a top portion of the steam-water separator, the dry and 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 thermal power generation devices and heat utilization devices, wherein two thermal power generation devices and one heat utilization device or one thermal power generation device and two heat utilization devices or one thermal power generation device and one heat utilization device are connected in series to form a branch, the thermal power generation device consists of a thermal power generator set and a second-stage heat exchanger for providing heat for the thermal power generator set, and the heat utilization devices consist of a waste heat utilization industry cluster and a second-stage heat exchanger for providing heat for the waste heat utilization industry cluster; the first-stage heat exchanger is connected with one or two branches, and the output end of the heat exchanger is connected with one branch; the junction of each branch and the water injection pipe is provided with a check valve to prevent the backflow of the condensed fluid in the water injection pipe.
As an improvement to the above technical solution, the geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions further comprises a control system; the control system comprises a signal processor, an AI processor in communication connection with the signal processor, a PLC in communication connection with the AI processor, control valves arranged at the inlet end of a heat source carrier, the output end of dry and wet steam, the output end of dry steam and the input end of a heat exchanger, flow valves arranged at the output end of the heat exchanger, the output channel of the dry and wet steam and the output channel of the dry steam, a pressure gauge and a thermometer arranged at the top of a steam-water separator, a data acquisition module arranged underground the production well, at the outlet of the production well, inside the steam-water separator, at the output end of the dry and wet steam, at the output end of the dry steam, at the input end of the heat exchanger, at the output end of the heat exchanger, at the input end of a water injection pipe and at the inlet of the water injection well, wherein the control valves, the flow valves and the motors are in communication connection with the PLC, the data acquisition module and, the AI processor is processed and then uploaded to the PLC, and the PLC controls the opening and closing of the control valve, the flow valve and the motor.
As an improvement to the above technical scheme, the data acquisition module comprises sensors for acquiring underground temperature, pressure and heat flow value of a production well, sensors for acquiring outlet flow, temperature and pressure of the production well, sensors for acquiring internal temperature, pressure, PH value and calcium carbonate content of a steam-water separator, sensors for acquiring dry and wet steam output end, dry steam output end, heat exchanger input end, heat exchanger output end temperature, pressure and flow, sensors for detecting solid at the bottom of the steam-water separator, sensors for acquiring temperature, PH value and calcium carbonate content in a water injection pipe and sensors for acquiring temperature, PH value and calcium carbonate content at an inlet of the water injection well.
As an improvement on the technical scheme, a safety valve is further arranged at the top of the steam-water separator.
The geothermal energy development and utilization circulating system with the intelligent monitoring and descaling functions is divided into a mechanical system and a control system; in a mechanical system, a steam-water separator (main equipment) is based on a large vertical tank container, and the selection of the capacity of the steam-water separator is obtained by comprehensively calculating parameters such as outlet flow of a production well, underground heat energy storage, heat flow value, total aboveground heat consumption and the like. When the equipment works and operates, the heat source body flowing through the inlet at the bottom of the tank body is subjected to pretreatment and separation through precipitation and filtration of the tank body. The outlet valve at the top of the tank body controls the output of dry steam (saturated steam); the upper outlet valve controls the output of dry and wet steam. The inlet and the outlet of the middle lower part adopt an indirect heat exchange mode, and heat exchange is carried out through a heat exchange medium to output heat. The bottom of the tank body is provided with a solid detection and slag discharge device (optionally matched with a rotary screw type slag discharge device) for separating and discharging impurities such as silt, scale and the like brought by the heat source carrier. After the heat carrier of the production well is supplied with heat energy through heat exchange, water quality treatment equipment is arranged before the heat carrier is reinjected to the underground. The opening of the function is completed by implementing online detection on the PH value, the calcium carbonate content and the like in the main equipment, analyzing the obtained parameters by the AI intelligent chip and outputting an operation instruction by the PLC. The equipment has wide adaptability aiming at geological rock compositions in different regions. Through the design and the configuration of the mode, the function of separating the heat source carrier produced by the production well through the main equipment and outputting heat to the application end in three different modes of dry steam, dry and wet steam and heat exchange medium can be realized. The longer the production running time is, the more stable the water quality is, thereby ensuring that the heat collecting and supplying system is maintained in a stable, reliable and safe running state.
The control system is used for ensuring the working stability of the separation function of the mechanical system, and is additionally provided with the functions of automatic detection and automatic fault removal. Other instrumentation, ancillary equipment and components are provided around the main core functions of the mechanical system for proper operation and configuration of the necessary safety equipment. In consideration of ensuring the reliability and stability of the long-term operation of the equipment, the control system is matched with a steam-water separator (main equipment) to carry out intelligent central control on the whole heat carrier circulation system. The acquisition of the system signal includes (without limitation): downhole bottom temperature, pressure, heat flow value; production well outlet flow, temperature, pressure; the internal temperature, pressure, PH value and calcium carbonate content of the steam-water separator (main equipment), and the temperature, pressure and flow of each output port; a solid detection sensor at the bottom of the main device, and the like. As shown in fig. 3, the collected information is converted into data information through signal processing, a uniform format signal is formed and input to an AI processor (chip), calculation, analysis and comparison are performed one by one, and processing is performed according to a program mode of a preset comparison, analysis and calculation flow, and the processing process can adopt various different programming languages to perform programming work. The AI processor transmits the processing and analyzing conclusion signals to a Programmable Logic Controller (PLC) respectively, and the PLC sends out execution instruction signals to each actuator. The operation of actuators such as control valves and motors is controlled. The specific programming content and preset parameter values for each execution device will be completed at the specific project design stage.
Compared with the prior art, the invention has the advantages and positive effects that:
the geothermal energy development and utilization circulating system with the intelligent monitoring and descaling functions solves the problem of how to effectively separate and distribute heat sources produced by a production well, can realize separation treatment on heat source carriers produced by the production well through main equipment, outputs heat to an application end in three different modes of dry steam, dry and wet steam and heat exchange media, and can meet the industrial requirements of different heat utilization modes. As the heating equipment, this system has specially increased the control system who has designed intellectuality, automated inspection and automatic troubleshooting function, control system will gather the information, convert into data information through signal processing, input AI treater (chip) after forming unified format signal, carry out the computational analysis contrast one by one, and handle according to the procedure mode of predetermined contrastive analysis calculation flow, operation performance is reliable, stable, safety has been accomplished, can not influence the user demand of rear end heat consumption because of pH valve or contain solid impurity because of production well output heat source carrier.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of the control principle of the present invention;
FIG. 3 is a schematic flow chart of the control system for performing judgment analysis according to the present invention;
fig. 4 is a schematic diagram of a control flow performed by the control system of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
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, as claimed, but is merely representative of selected embodiments of the invention, and all other embodiments, which can be obtained by those skilled in the art based on the embodiments of the present invention without inventive faculty, are within the scope of the invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other, so that the specific meaning of the terms in the invention can be understood by those skilled in the art.
As shown in fig. 1 to 4, the geothermal energy development and utilization circulation system with intelligent monitoring and descaling functions comprises a steam-water separator 1 communicated with a production well for performing steam-water separation on an input heat source carrier, wherein a solid detection deslagging device 2 is arranged at the bottom of the steam-water separator 1; the lower part of the steam-water separator 1 is provided with a heat exchanger 3; the upper part and the top of the steam-water separator 1 are communicated with 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 with a geothermal utilization subsystem, and condensed fluid of the geothermal utilization subsystem is gathered to a water injection pipe and is injected into a water injection well through the water injection pipe to form water recycling; the water injection pipe is externally connected with a water quality treatment device 4 to carry out softening treatment on the condensed fluid flowing through the water injection pipe.
The water injection pipe is provided with a water injection control valve 5 at the condensation fluid gathering part of the geothermal utilization subsystem so that the condensation fluid is gathered and then injected into a water injection well through the water injection control valve 5, the water quality treatment device 4 is connected with the water injection pipe in parallel, the water inlet end of the water quality treatment device 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 device 4 is connected to the water injection pipe at the rear end of the water injection control valve 5; the water quality treatment device 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 device 4 and prevent the treated liquid from flowing back. By adopting the design, the water injection control valve 5 can control all or part of the condensed fluid in the water injection pipe at the front end of the water injection control valve 5 to pass through the water quality treatment device, and the condensed fluid can be completely or partially treated according to the water quality condition of the system. And a water injection pump and a recharge valve are arranged on the water injection pipe at the rear end of the water injection control valve 5, so that fluid entering a water injection well is prevented from recharging. The steam-water separator 1 comprises a vertical tank body; a solid detection deslagging device 2 is arranged at the bottom of the steam-water separator 1; the solid detection slag discharging device 2 is a rotary screw type slag discharging device and comprises a slag discharging channel arranged at the bottom of the tank body, a screw rod arranged in the slag discharging channel and a motor for driving the screw rod to move; the lower part of the tank body is provided with a heat source carrier inlet communicated with the production well, and the heat source carrier inlet is positioned above the solid detection deslagging 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 positioned above the output end of the heat exchanger 3.
The high-temperature steam output port comprises a dry and wet steam output port arranged at the upper part of the steam-water separator 1 and a dry steam output port arranged at the top of the steam-water separator 1, the dry and wet steam output port is connected with the first-stage heat exchanger 8, and the dry steam output port is connected with the first-stage heat exchanger 8 through a flash tank 9 or directly connected with the first-stage heat exchanger 8; the waste heat utilization subsystem comprises a thermal power generation device 10 and 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 one thermal power generation device 10 and one heat utilization device 11 are connected in series to form a branch, the thermal power generation device 10 consists of a thermal power generator set and a second-stage heat exchanger for providing heat for the thermal power generator set, and the heat utilization device 11 consists of a waste heat utilization industry cluster and a second-stage heat exchanger for providing heat for the waste heat utilization industry cluster; the first-stage heat exchanger 8 is connected with one or two branches, and the output end of the heat exchanger 3 is connected with one branch; a check valve 7 is provided at the junction of each branch and the water injection pipe to prevent backflow of the condensed fluid in the water injection pipe.
The geothermal energy development and utilization circulating system with the water quality guarantee also comprises a control system; the control system comprises a signal processor, an AI processor in communication connection with the signal processor, a PLC in communication connection with the AI processor, a
The data acquisition module is including gathering the sensor of production well underground temperature, pressure, heat current value, gather the sensor of production well export flow, the temperature, pressure, gather the inside temperature of catch water, pressure, the PH value, calcium carbonate content's sensor, gather the sensor of dry and wet steam output, the dry steam output, the heat exchanger input, heat exchanger output temperature, pressure, the sensor of flow, set up in the bottom solid detection inductor of catch water bottom, gather temperature in the water injection pipe, the PH value, calcium carbonate content's sensor, gather water injection well entrance temperature, the PH value, calcium carbonate content's sensor. The top of the steam-water separator 1 is also provided with a
The geothermal energy development and utilization circulating system with the intelligent monitoring and descaling functions is divided into a mechanical system and a control system; in a mechanical system, a steam-water separator (main equipment) is based on a large vertical tank container, and the selection of the capacity of the steam-water separator is obtained by comprehensively calculating parameters such as outlet flow of a production well, underground heat energy storage, heat flow value, total aboveground heat consumption and the like. When the equipment works and operates, the heat source body flowing through the inlet at the bottom of the tank body is subjected to pretreatment and separation through precipitation and filtration of the tank body. The outlet valve at the top of the tank body controls the output of dry steam (saturated steam); the upper outlet valve controls the output of dry and wet steam. The inlet and the outlet of the middle lower part adopt an indirect heat exchange mode, and heat exchange is carried out through a heat exchange medium to output heat. The bottom of the tank body is provided with a solid detection and slag discharge device (optionally matched with a rotary screw type slag discharge device) for separating and discharging impurities such as silt, scale and the like brought by the heat source carrier. After the heat carrier of the production well is supplied with heat energy through heat exchange, water quality treatment equipment is arranged before the heat carrier is reinjected to the underground. The opening of the function is completed by implementing online detection on the PH value, the calcium carbonate content and the like in the main equipment, analyzing the obtained parameters by the AI intelligent chip and outputting an operation instruction by the PLC. The equipment has wide adaptability aiming at geological rock compositions in different regions. Through the design and the configuration of the mode, the function of separating the heat source carrier produced by the production well through the main equipment and outputting heat to the application end in three different modes of dry steam, dry and wet steam and heat exchange medium can be realized. The longer the production running time is, the more stable the water quality is, thereby ensuring that the heat collecting and supplying system is maintained in a stable, reliable and safe running state.
The control system is used for ensuring the working stability of the separation function of the mechanical system, and is additionally provided with the functions of automatic detection and automatic fault removal. Other instrumentation, ancillary equipment and components are provided around the main core functions of the mechanical system for proper operation and configuration of the necessary safety equipment. In consideration of ensuring the reliability and stability of the long-term operation of the equipment, the control system is matched with a steam-water separator (main equipment) to carry out intelligent central control on the whole heat carrier circulation system. The acquisition of the system signal includes (without limitation): downhole bottom temperature, pressure, heat flow value; production well outlet flow, temperature, pressure; the internal temperature, pressure, PH value and calcium carbonate content of the steam-water separator (main equipment), and the temperature, pressure and flow of each output port; a solid detection sensor at the bottom of the main device, and the like. As shown in fig. 3, the collected information is converted into data information through signal processing, a uniform format signal is formed and input to an AI processor (chip), calculation, analysis and comparison are performed one by one, and processing is performed according to a program mode of a preset comparison, analysis and calculation flow, and the processing process can adopt various different programming languages to perform programming work. The AI processor transmits the processing and analyzing conclusion signals to a Programmable Logic Controller (PLC) respectively, and the PLC sends out execution instruction signals to each actuator. The operation of actuators such as control valves and motors is controlled. The specific programming content and preset parameter values for each execution device will be completed at the specific project design stage.
The main equipment (steam-water separator) is mainly used as a heart function with an intelligent regulation function in a heating system, and auxiliary facilities (equipment, parts and the like) such as inductors, instruments, driving devices and the like which are matched with the main equipment are distributed throughout the whole system. The logging temperature and pressure instrument is installed in a working cavity constructed artificially in the underground.
The main equipment is based on a large vertical tank container, and the selection of the capacity of the main equipment is obtained by comprehensively calculating parameters such as outlet flow of a production well, underground heat energy storage, heat flow value, total overground heat utilization amount and the like. When the equipment works and operates, the heat source body flowing through the inlet at the bottom of the tank body is subjected to pretreatment and separation through precipitation and filtration of the tank body. An outlet at the top of the tank body controls the output of dry steam (saturated steam); and the upper outlet is used for controlling the output of dry and wet steam. The inlet and the outlet of the middle lower part adopt an indirect heat exchange mode, and heat exchange is carried out through a heat exchange medium to output heat. The bottom of the tank body is provided with a solid detection and slag discharge device (optionally matched with a rotary screw type slag discharge device) for separating and discharging impurities such as silt, scale and the like brought by the heat source carrier. Through the design and the configuration of the mode, the function of separating the heat source carrier produced by the production well through the main equipment and outputting heat to the application end in three different modes of dry steam, dry and wet steam and heat exchange medium can be realized. In order to ensure the working stability of the separation function, the automatic detection and automatic fault removal functions are additionally designed. Other instruments, auxiliary facilities and parts are arranged around the main core functions of the equipment to work normally, and necessary safety facilities are configured. In view of guaranteeing the reliability and stability of the long-term operation of the equipment, an intelligent control system, namely a control system part is particularly added to the equipment.
The control system is a central control which is matched with the main equipment to carry out intelligent implementation on the whole heat carrier circulation system. The acquisition of system signals includes (but is not limited to) downhole bottom temperature, pressure, heat flow values; production well outlet flow, temperature, pressure; the temperature, the pressure, the PH value and the calcium carbonate content in the main equipment, and the temperature, the pressure and the flow of each output port; a solid detection sensor at the bottom of the main device, and the like. The acquired information is converted into data information through signal processing, uniform format signals are formed and input into an AI processor (chip), calculation, analysis and comparison are carried out one by one, processing is carried out according to a program mode of a preset comparison, analysis and calculation flow, and programming work can be carried out by adopting various different programming languages in the processing process. The AI processor transmits the processing and analyzing conclusion signals to a Programmable Logic Controller (PLC) respectively, and the PLC sends out execution instruction signals to each actuator. The operation of actuators such as control valves and motors is controlled. The specific programming content and preset parameter values for each execution device will be completed at the specific project design stage. The patent provides a solution in the aspects of application principle, implementation method, operation flow and system structure design. When the project is specifically implemented, the project is used as a guide, and engineering and construction designs of different specialties are completed by referring to field survey data.
The geothermal energy development and utilization circulating system with the intelligent monitoring and descaling functions solves the problem of how to effectively separate and distribute heat sources produced by a production well, can realize separation treatment on heat source carriers produced by the production well through main equipment, outputs heat to an application end in three different modes of dry steam, dry and wet steam and heat exchange media, and can meet the industrial requirements of different heat utilization modes. As the heating equipment, this system has specially increased the control system who has designed intellectuality, automated inspection and automatic troubleshooting function, control system will gather the information, convert into data information through signal processing, input AI treater (chip) after forming unified format signal, carry out the computational analysis contrast one by one, and handle according to the procedure mode of predetermined contrastive analysis calculation flow, operation performance is reliable, stable, safety has been accomplished, can not influence the user demand of rear end heat consumption because of pH valve or contain solid impurity because of production well output heat source carrier.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.