Medium-deep stratum rock heat supply intelligent control system based on Internet of Things technology

Abstract

The utility model discloses an intelligent control system for medium-deep stratum heat supply based on the Internet of Things technology. The intelligent control system comprises an intelligent control unit, a medium-deep stratum heat supply unit, a user side energy consumption unit, a cloud server and a user terminal. The intelligent control unit is simultaneously connected with the middle-deep layer rock heat supply unit and the user side energy consumption unit, receives temperature, pressure and flow information uploaded by the middle-deep layer rock heat supply unit and the user side energy consumption unit, and issues instructions to the middle-deep layer rock heat supply unit and the user side energy consumption unit; the intelligent control unit controls the medium-deep stratum rock heat supply unit to supply heat to the user side energy consumption unit, the intelligent control unit is connected with the cloud server through a network, and the cloud server feeds back a result to the controller and further feeds back data information to the user terminal through the network. According to the utility model, the intelligent control of the process of supplying heat to the building by using the medium-deep stratum rock heat as a heat source is realized, and the on-demand energy supply and energy-saving operation of the building are realized.

Description

Technical Field

[0001] The utility model relates to building energy-saving technology and medium-deep geothermal technology, and specifically to a medium-deep geothermal heating intelligent control system based on Internet of Things technology. Background Art

[0002] In order to actively respond to global climate change, my country has proposed a dual-carbon strategic goal. In the future, my country's energy structure, which is mainly based on high-carbon fossil energy, will inevitably transform into an energy structure based on low-carbon, green, renewable energy.

[0003] Heating is an important form of energy consumption. With the increasing maturity of artificial intelligence and renewable energy, the heating system is developing towards more energy-saving, cleaner, smarter, and a high proportion of renewable energy. The traditional heating system is usually designed for full load, and often adopts a large opening and closing mode. If the heating is on, all buildings in the entire heating range will be heated, and if the heating is off, all buildings in the entire range will be off. In actual operation, the heating system is operated under partial load, and the "big horse pulling a small cart" phenomenon often occurs. For some buildings with special requirements, such as schools, there are no teaching activities in the teaching building during the winter vacation, but the heating system still provides heat sources for it according to the established heat, resulting in a waste of heat energy. To realize the "cold and hot" of the building, take appropriate control measures to make the heating system dynamically follow the load changes, realize "heating on demand", and achieve energy saving while meeting the human comfort requirements, has become an important direction in the current field of centralized heating adjustment.

[0004] Medium-deep geothermal technology has developed rapidly and has become the main technology for geothermal energy development and utilization. The development of intelligent control systems suitable for medium-deep geothermal technology has positive significance for energy conservation, carbon reduction and geothermal energy development. Utility Model Content

[0005] The purpose of the utility model is to provide an intelligent control system for medium-deep rock heat supply based on Internet of Things technology to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An intelligent control system for medium-deep geothermal heating based on Internet of Things technology, comprising an intelligent control unit, a medium-deep geothermal heating unit, a user-side energy consumption unit, a cloud server, and a user terminal;

[0008] The intelligent control unit is connected to the medium-deep geothermal heating unit and the user-side energy consumption unit at the same time. The intelligent control unit receives the temperature, pressure, and flow information uploaded by the medium-deep geothermal heating unit and the user-side energy consumption unit, and sends instructions to the medium-deep geothermal heating unit and the user-side energy consumption unit. The intelligent control unit controls the medium-deep geothermal heating unit to supply heat to the user-side energy consumption unit. The intelligent control unit is connected to the cloud server through a wireless network or a wired network. The cloud server performs AI intelligent learning and data calculation on the data transmitted by the intelligent control unit, feeds the results back to the controller, and stores data on various parameters, states, alarms, and records of cumulative operating time and its historical data. The cloud server also feeds back data information to the user terminal through a wireless network or a wired network. The user terminal monitors the operating status of the equipment, sets operating parameters, alarms for system faults, and performs remote control.

[0009] Furthermore, the medium-deep geothermal heat supply unit includes a medium-deep geothermal heat exchange hole, a geothermal heat pump unit, a heat source side water supply pump, a user side water supply pump, and a constant pressure water supply device. The medium-deep geothermal heat exchange hole is connected to the geothermal heat pump unit through a heat source side circulation pipeline. The heat source side circulation pipeline includes a heat source side heating pipeline and a heat source side return pipeline. The water outlet of the heat source side water supply pump is connected to the heat source side return pipeline, and the water inlet side of the heat source side water supply pump is connected to the constant pressure water supply device; the user side energy consumption unit includes a user side heating supply and return water pipeline and a heat dissipation device arranged in the indoor of the building. The user side heating supply and return water pipeline is connected to the heat source side return water pipeline through the user side circulation pipeline. A ground rock heat pump unit, a heat source side circulation pipeline and a user side circulation pipeline exchange heat through the ground rock heat pump unit, the user side circulation pipeline includes a user side heating pipeline and a user side return pipeline, the water outlet of the user side make-up water pump is connected to the user side return pipeline, the water inlet of the user side make-up water pump is connected to a constant pressure make-up water device, a user side circulating water pump is also provided on the user side return pipeline, and a heating electric valve is provided on the user side heating pipeline, the intelligent control unit includes an intelligent controller, and the intelligent controller is electrically connected to the ground rock heat pump unit, the heat source side make-up water pump, the user side make-up water pump, the user side circulating water pump, and the heating electric valve respectively.

[0010] Furthermore, the number of the user-side circulating water pumps is one or more, and when multiple user-side circulating water pumps are used, they are arranged in parallel on the user-side return water pipeline.

[0011] Furthermore, a first pressure sensor, a first temperature sensor, and a first flow sensor are provided on the heat source side heating pipeline, a second pressure sensor is provided at the water outlet of the heat source side make-up water pump, a third pressure sensor is provided at the water outlet of the user side make-up water pump, and a second temperature sensor and a second flow sensor are provided on the heat source side return water pipeline, and the first pressure sensor, the first temperature sensor, the first flow sensor, the second pressure sensor, the third pressure sensor, the second temperature sensor, and the second flow sensor are all electrically connected to the intelligent controller.

[0012] Furthermore, an indoor temperature sensor is arranged inside the building of the energy-consuming unit on the user side, and an outdoor temperature and humidity sensor is arranged outside the building; a fourth pressure sensor, a fourth flow sensor, and a third temperature sensor are arranged on the return water pipe on the user side; a fifth pressure sensor is arranged at the water outlet of the circulating water pump on the user side; and a fourth temperature sensor and a third flow sensor are arranged on the heating pipe on the user side; the indoor temperature sensor, the outdoor temperature and humidity sensor, the fourth pressure sensor, the fourth flow sensor, the third temperature sensor, the fifth pressure sensor, the fourth temperature sensor, and the third flow sensor are all electrically connected to the intelligent controller.

[0013] Furthermore, the user terminal includes a mobile phone, an iPad, and a PC terminal.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are:

[0015] The utility model realizes the intelligent control of the process of heating buildings by using medium-deep geothermal heat as a heat source, thereby realizing on-demand energy supply and energy-saving operation of buildings. It monitors the pipeline pressure, temperature, flow and other parameters of the medium-deep geothermal heat heating unit and the user-side energy consumption unit, and can automatically replenish water and supply heat, which greatly reduces the number of maintenance personnel and reduces operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a control principle block diagram of the utility model;

[0018] In the figure: 10-intelligent control unit, 11-intelligent controller, 20-medium-deep geothermal heating unit, 21-medium-deep geothermal heat exchange hole, 22-geothermal heat pump unit, 23-heat source side water supply pump, 24-user side water supply pump, 25-constant pressure water supply device, 201-heat source side circulation pipeline, 202-first pressure sensor, 203-second pressure sensor, 204-third pressure sensor, 205-first temperature sensor, 206-second temperature sensor, 207-first flow sensor, 208-second flow sensor Sensor, 30-user side energy consumption unit, 31-building, 311-user side heating supply and return water pipeline, 312-indoor temperature sensor, 313-outdoor temperature and humidity sensor, 32-user side circulating water pump, 33-heating electric valve, 301-user side circulating pipeline, 302-fourth pressure sensor, 303-fifth pressure sensor, 304-third temperature sensor, 305-fourth temperature sensor, 306-third flow sensor, 307-fourth flow sensor, 40-cloud server, 50-user terminal. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] See also Figure 1-2 The utility model provides a medium-deep rock heat heating intelligent control system based on the Internet of Things technology, including an intelligent control unit 10, a medium-deep rock heat heating unit 20, a user-side energy unit 30, a cloud server 40, and a user terminal 50;

[0021] The intelligent control unit 10 is connected to the medium-deep geothermal heating unit 20 and the user-side energy unit 30 at the same time. The intelligent control unit 10 receives the temperature and pressure information uploaded by the medium-deep geothermal heating unit 20 and the user-side energy unit 30, and sends instructions to the medium-deep geothermal heating unit 20 and the user-side energy unit 30. The intelligent control unit 10 controls the medium-deep geothermal heating unit 20 to supply heat to the user-side energy unit 30. The intelligent control unit 10 is connected to the cloud server 40 through a wireless network or a wired network. The cloud server 40 performs AI intelligent learning and data calculation on the data transmitted by the intelligent control unit 10, feeds the results back to the controller, and stores various parameters, states, alarms, records of cumulative operating time and its historical data. The cloud server 40 also feeds back data information to the user terminal 50 through a wireless network or a wired network. The user terminal 50 monitors the operating status of the equipment, sets operating parameters, alarms for system faults, and performs remote control.

[0022] Specifically, the medium-deep geothermal heat supply unit 20 includes a medium-deep geothermal heat exchange hole 21, a geothermal heat pump unit 22, a heat source side water supply pump 23, a user side water supply pump 24, and a constant pressure water supply device 25. The medium-deep geothermal heat exchange hole 21 is connected to the geothermal heat pump unit 22 through a heat source side circulation pipeline 201. The heat source side circulation pipeline 201 includes a heat source side heating pipeline and a heat source side return pipeline. The outlet end of the heat source side water supply pump 23 is connected to the heat source side return pipeline, and the water inlet side of the heat source side water supply pump 23 is connected to the constant pressure water supply device 25; the user side energy consumption unit 30 includes a user side heating supply and return water pipeline 311 and a heat dissipation device arranged in the room of the building 31. The user side heating supply and return water pipeline 311 is connected to the user side circulation pipeline 301. The geothermal heat pump unit 22 is connected, and the heat source side circulation pipeline 201 and the user side circulation pipeline 301 exchange heat through the geothermal heat pump unit 22. The user side circulation pipeline 301 includes a user side heating pipeline and a user side return water pipeline. The outlet end of the user side make-up water pump 24 is connected to the user side return water pipeline, and the water inlet end of the user side make-up water pump 24 is connected to the constant pressure make-up water device 25. A user side circulating water pump 32 is also provided on the user side return water pipeline, and a heating electric valve 33 is provided on the user side heating pipeline. The intelligent control unit 10 includes an intelligent controller 11, and the intelligent controller 11 is electrically connected to the geothermal heat pump unit 22, the heat source side make-up water pump 23, the user side make-up water pump 24, the user side circulating water pump 32, and the heating electric valve 33 respectively.

[0023] Specifically, the number of the user-side circulating water pumps 32 is one or more, and when multiple user-side circulating water pumps 32 are used, they are arranged in parallel on the user-side return water pipeline. Preferably, in this embodiment, two user-side circulating water pumps 32 are arranged in parallel on the user-side return water pipeline.

[0024] Specifically, a first pressure sensor 202, a first temperature sensor 205, and a first flow sensor 207 are provided on the heat source side heating pipeline, a second pressure sensor 203 is provided at the water outlet of the heat source side make-up water pump 23, a third pressure sensor 204 is provided at the water outlet of the user side make-up water pump 24, and a second temperature sensor 206 and a second flow sensor 208 are provided on the heat source side return water pipeline. The first pressure sensor 202, the first temperature sensor 205, the first flow sensor 207, the second pressure sensor 203, the third pressure sensor 204, the second temperature sensor 206, and the second flow sensor 208 are all electrically connected to the intelligent controller 11.

[0025] Specifically, an indoor temperature sensor 312 is arranged inside the building 31 of the energy consumption unit 30 on the user side, and an outdoor temperature and humidity sensor 313 is arranged outside the building 31; a fourth pressure sensor 302, a fourth flow sensor 307, and a third temperature sensor 304 are arranged on the return water pipe on the user side; a fifth pressure sensor 303 is arranged at the water outlet end of the circulating water pump 32 on the user side; a fourth temperature sensor 305 and a third flow sensor 306 are arranged on the heating pipe on the user side; the indoor temperature sensor 312, the outdoor temperature and humidity sensor 313, the fourth pressure sensor 302, the fourth flow sensor 307, the third temperature sensor 304, the fifth pressure sensor 303, the fourth temperature sensor 305, and the third flow sensor 306 are all electrically connected to the intelligent controller 11.

[0026] Specifically, the user terminal 50 includes a mobile phone, an iPad, and a PC terminal.

[0027] In this embodiment, the first pressure sensor 202, the second pressure sensor 203, the third pressure sensor 204, the first temperature sensor 205, the second temperature sensor 206, the first flow sensor 207, the second flow sensor 208, the indoor temperature sensor 312, the outdoor temperature and humidity sensor 313, the fourth pressure sensor 302, the fifth pressure sensor 303, the third temperature sensor 304, the fourth temperature sensor 305, the third flow sensor 306, and the fourth flow sensor 307 constitute the IoT perception layer of the system. The ground-rock heat pump unit 22, the heat source side water supply pump 23, the user side water supply pump 24, the user side circulating water pump 32, and the heating electric valve 33 constitute the IoT control layer of the system, and the equipment providing wireless network or wired network, such as signal transmitter, communication protocol, communication port, data storage device, communication cable, etc., constitute the IoT network layer of the system, and the cloud server, user terminal 50 and other application programs constitute the IoT application layer of the system.

[0028] In this embodiment, in order to ensure the heat demand and heating reliability of the building 31, a manual valve can be installed at the heating inlet of the building 31 on the user-side heating pipeline. The manual valve and the heating electric valve 33 can be connected in series or in parallel. When in series, the manual valve is in a normally open state, and when in parallel, the manual valve is in a normally closed state. The opening adjustment range of the heating electric valve 33 is 0-100%, and the heating circulation flow can be controlled according to the heat demand. The intelligent controller 11 can use Siemens s7 series PLC, and the constant pressure water replenishment device 25 uses commercially available products, such as FLK-1-1-190, including normal pressure expansion tanks, diaphragm expansion tanks, etc.; the heat dissipation equipment is not shown in the figure, and a common radiator group can be used.

[0029] In this embodiment, in order to realize remote diagnosis and maintenance of building 31 equipment, reduce the input of on-site management personnel, reduce management costs, improve equipment use effects, increase equipment energy-saving benefits, and reduce the time and cost of maintenance engineers to go to the site, the system is equipped with a multi-functional gateway to meet various popular communication protocols in the market and realize protocol conversion, including but not limited to Modbus RTU, Modbus TCP, BACnet, Siemens S7, Ethernet, OPC UA, etc., which can realize on-site data collection and directly convert it into a configuration screen for real-time data monitoring; users only need to use a computer, mobile phone, IPAD or a device with built-in browser function to log in to the configuration screen for monitoring, and realize remote monitoring of equipment start and stop, operation and other operations, giving users a good operating experience; at the same time, it has various alarm platforms (including WeChat, DingTalk, SMS, etc.), MQTT services, project upload to the cloud and other functions; it can also be forwarded to BACnet server, Modbus server, IEC61850 server, OPC UA server, MQTT server, and HTTP WEB service can be opened.

[0030] In the present invention, the indoor temperature sensor 312 feeds back the collected temperature signal to the cloud server 40 through the transmitter via 4G or wired network. The cloud server 40 calculates and analyzes the signal and feeds back the signal to the intelligent controller 11. The intelligent controller 11 adjusts the opening of the heating electric valve 33. The indoor temperature sensor 312, the outdoor temperature and humidity sensor 313, the fourth pressure sensor 302, the fourth flow sensor 307, the third temperature sensor 304, the fifth pressure sensor 303, the fourth temperature sensor 305, and the third flow sensor 306 feed back the user side signal to the cloud server 40. The cloud server 40 monitors the user side in real time. The priority is controlled in the order of temperature control first and time control later. At the same time, the first pressure sensor 202, the first temperature sensor 205, the first flow sensor 207, the second pressure sensor 203, the third pressure sensor 204, the second temperature sensor 206, and the second flow sensor 208 upload the collected pipeline pressure, temperature, and flow signals to the cloud server 40 via 4G or a wired network. The cloud server 40 calculates and analyzes the signals and feeds them back to the intelligent controller 11. The intelligent controller 11 adjusts the ground-rock heat pump unit 22, the heat source side make-up water pump 23, the user side make-up water pump 24, and the user side circulating water pump 32.

[0031] During operation, heating can be provided by time period: according to the time setting, the energy supply equipment can be automatically started or shut down. For example, if the heating time is set at 0:00 on November 1, the heating equipment will be automatically started at that time to provide heating for Building 31; if the heating stop time is set at 24:00 on March 31 of the following year, the heating equipment will be automatically shut down at that time; for places with special heating needs, such as teaching buildings, which are normally used from 8:00 to 18:00, in order to ensure that the classroom temperature meets the standard after students arrive at school, the heating can be set to start 2 hours in advance, and the heating will be stopped on time at 18:00. At other times, the teaching building will only turn on the antifreeze mode. Heating on demand, according to the actual energy consumption of Building 31, the opening of the heating electric valve 33 is adjusted remotely by zone, and the opening of the heating electric valve 33 is adjusted according to the heat load of Building 31, thereby adjusting the circulation flow of the heating medium to accurately meet the heat load demand of Building 31.

Claims

1. An intelligent control system for medium-deep geothermal heating based on Internet of Things technology, characterized by: It includes intelligent control unit, medium and deep geothermal heating unit, user-side energy consumption unit, cloud server and user terminal; The intelligent control unit is connected to the cloud server via a wireless network or a wired network, and the cloud server is connected to the user terminal via a wireless network or a wired network; The medium-deep geothermal heat supply unit includes a medium-deep geothermal heat exchange hole, a geothermal heat pump unit, a heat source side water supply pump, a user side water supply pump, and a constant pressure water supply device. The medium-deep geothermal heat exchange hole is connected to the geothermal heat pump unit through a heat source side circulation pipeline. The heat source side circulation pipeline includes a heat source side heating pipeline and a heat source side return pipeline. The water outlet of the heat source side water supply pump is connected to the heat source side return pipeline, and the water inlet side of the heat source side water supply pump is connected to the constant pressure water supply device. The user-side energy-consuming unit includes a user-side heating supply and return water pipeline and a heat dissipation device arranged indoors in the building. The user-side heating supply and return water pipeline is connected to the geothermal heat pump unit through the user-side circulation pipeline. The heat source-side circulation pipeline and the user-side circulation pipeline are heat-exchanged through the geothermal heat pump unit. The user-side circulation pipeline includes a user-side heating pipeline and a user-side return water pipeline. The outlet end of the user-side feed water pump is connected to the user-side return water pipeline. The water inlet end of the user-side feed water pump is connected to the constant-pressure feed water device. The user-side return water pipeline is also provided with a user-side circulation water pump, and the user-side heating pipeline is provided with a heating electric valve; The intelligent control unit includes an intelligent controller, which is electrically connected to the ground-rock heat pump unit, the heat source side water supply pump, the user side water supply pump, the user side circulating water pump, and the heating electric valve.

2. The intelligent control system for medium-deep geothermal heating based on Internet of Things technology as claimed in claim 1, characterized in that: The number of the user-side circulating water pumps is one or more, and when multiple user-side circulating water pumps are used, they are arranged in parallel on the user-side return water pipeline.

3. The intelligent control system for medium-deep geothermal heating based on Internet of Things technology as claimed in claim 1, characterized in that: A first pressure sensor, a first temperature sensor, and a first flow sensor are provided on the heat source side heating pipeline, a second pressure sensor is provided at the water outlet of the heat source side water supply pump, a third pressure sensor is provided at the water outlet of the user side water supply pump, and a second temperature sensor and a second flow sensor are provided on the heat source side return water pipeline. The first pressure sensor, the first temperature sensor, the first flow sensor, the second pressure sensor, the third pressure sensor, the second temperature sensor, and the second flow sensor are all electrically connected to the intelligent controller.

4. The intelligent control system for medium-deep geothermal heating based on Internet of Things technology as claimed in claim 1, characterized in that: An indoor temperature sensor is arranged inside the building of the energy-consuming unit on the user side, and an outdoor temperature and humidity sensor is arranged outside the building; a fourth pressure sensor, a fourth flow sensor, and a third temperature sensor are arranged on the return water pipe on the user side; a fifth pressure sensor is arranged at the water outlet of the circulating water pump on the user side; a fourth temperature sensor and a third flow sensor are arranged on the heating pipe on the user side; the indoor temperature sensor, the outdoor temperature and humidity sensor, the fourth pressure sensor, the fourth flow sensor, the third temperature sensor, the fifth pressure sensor, the fourth temperature sensor, and the third flow sensor are all electrically connected to the intelligent controller.

5. The intelligent control system for medium-deep geothermal heating based on Internet of Things technology as claimed in claim 1, characterized in that: The user terminals include mobile phones, iPads, and PC terminals.

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