CN111981545A - Intelligent control soil heat accumulation type solar heat supply integrated system - Google Patents

Intelligent control soil heat accumulation type solar heat supply integrated system Download PDF

Info

Publication number
CN111981545A
CN111981545A CN201910436743.6A CN201910436743A CN111981545A CN 111981545 A CN111981545 A CN 111981545A CN 201910436743 A CN201910436743 A CN 201910436743A CN 111981545 A CN111981545 A CN 111981545A
Authority
CN
China
Prior art keywords
heat
solar
soil
sensor
controller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910436743.6A
Other languages
Chinese (zh)
Inventor
李娜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xingyueneng Beijing Energy Technology Co ltd
Original Assignee
Xingyueneng Beijing Energy Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xingyueneng Beijing Energy Technology Co ltd filed Critical Xingyueneng Beijing Energy Technology Co ltd
Priority to CN201910436743.6A priority Critical patent/CN111981545A/en
Publication of CN111981545A publication Critical patent/CN111981545A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
    • F24D11/003—Central heating systems using heat accumulated in storage masses water heating system combined with solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Water Supply & Treatment (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The intelligent control soil heat storage type solar heat supply comprehensive system is characterized by comprising a solar heat supply comprehensive system, a soil heat storage system, a power circuit system and a control system, and provides an underground vertical sleeve type heat exchanger, wherein in non-heating seasons, solar energy exchanges heat to soil through the underground pipe-embedded heat exchanger, the soil temperature is raised, and the solar energy is stored by utilizing the soil; in the heating season, the underground buried pipe heat exchange system works together with solar energy as a heat source, and when the solar energy collected heat cannot meet the heating requirement, the heat storage heat in the soil is extracted through the soil buried pipe to supply heat to the building in a combined manner. The problem of surplus solar heat in non-heating seasons is solved, the solar energy in the non-heating seasons is effectively utilized in a charging mode, and the heating contribution rate and the annual comprehensive utilization rate of the solar heat collecting system are improved.

Description

Intelligent control soil heat accumulation type solar heat supply integrated system
Technical Field
The invention relates to a solar centralized heating and hot water system used in industrial factory buildings, commercial office buildings and civil houses based on a chip or an industrial controller, and an integrated system for auxiliary heating by a system of storing solar energy in soil.
Background
Solar energy is clean energy, is actively developed in all countries of the world, and in the technical field of photo-thermal application, because the energy flux density of solar radiation reaching the earth surface is lower and the position (height and direction) of the sun is continuously changed in one year, the fixedly installed lighting device is difficult to achieve the optimal solar energy collecting effect.
In order to improve the level of heat energy accumulated all day or all year around collected sunlight in unit area, the sunlight receiving surface device is fixed, and the matched fixed reflector is used for increasing the radiation intensity on the light receiving target surface, one of the technical bases is the technology of Chinese utility model patent CN2002254383U, or the intelligent control technical scheme provided by the traditional solar hot water technology. Based on the technical basis of the invention patent application of 'intelligent control solar water heating system' for supplying hot water 24 hours all day, the hot water supplied in a centralized way is effectively controlled by adopting an intelligent water meter payment mode; the technical scheme also has the functions of freezing prevention, overheating prevention, lightning protection and automatic fault alarm control.
The solar energy collection system can also store heat in a soil system, can store heat and supply heat through the underground vertical double-pipe heat exchanger when necessary, and is a new technical scheme for upgrading the technology of an intelligent control solar water heating system and carrying out innovation again.
Disclosure of Invention
Aiming at the defects, the invention provides an underground vertical sleeve type heat exchanger, which exchanges heat to soil through an underground pipe heat exchanger in non-heating seasons, improves the temperature of the soil and stores the solar energy by utilizing the soil; in the heating season, the underground buried pipe heat exchange system works together with solar energy as a heat source, and when the solar energy collected heat cannot meet the heating requirement, the heat storage heat in the soil is extracted through the soil buried pipe to supply heat to the building in a combined manner. The problem of surplus solar heat in non-heating seasons is solved, the solar energy in the non-heating seasons is fully and effectively utilized, and the heating contribution rate and the annual comprehensive utilization rate of the solar heat collecting system are improved.
The underground buried pipe heat exchanger provided by the invention adopts a vertical sleeve type heat exchanger, and the heat exchanger is a closed circulation system with an inner sleeve and an outer sleeve; during circulation, working media flow into the tube from the upper part of the inner sleeve, water flows from top to bottom along the inner sleeve, and flows upwards from the bottom of the outer sleeve to the top of the outer sleeve through the outer sleeve, so that the heat exchange efficiency is improved compared with that of a traditional U-shaped tube heat exchanger;
according to the vertical sleeve type underground pipe-buried heat exchange system provided by the invention, soil is heated and stored in a non-heating season, the end temperature of underground heat storage can meet the requirement of direct heating temperature of a heating end, the heat storage temperature of the soil can be directly utilized for heating in a heating season, and the grade of heat does not need to be improved.
The specific technical scheme is as follows:
the invention comprises a solar heat collector, a vertical sleeve type underground buried pipe heat exchanger, a solar water tank, a circulating pump, a heat supply terminal and a standby heat source; the water inlet and outlet of the solar heat collector are connected with the solar water tank by adopting a circulating pump; the water inlet and outlet of the vertical sleeve type underground pipe laying system are connected with the solar water tank by adopting a circulating pump; the heat supply terminal and the standby heat source are connected in series and are connected with the solar water tank through the circulating pump.
The underground pipe-buried heat exchange system is of a vertical sleeve type, the depth of a buried pipe is approximately equal to the planar occupied diameter of a system buried pipe, and the heat storage performance of the buried pipe heat exchange system is guaranteed.
In the specific use, in non-heating seasons, the solar heat collection system is used as a heat source, and the underground pipe-buried heat exchange system is used as a heat accumulator. The solar water tank is continuously heated by the solar heat collector through the driving of the circulating pump, so that the temperature is raised, and the driving control of the circulating pump is the temperature difference between the heat collector and the solar water tank; the heat in the solar water tank heats the underground buried pipe heat exchange system through the circulating pump, and the heat is continuously stored in the buried pipe system;
in the heating season, the solar heat collecting system and the underground buried pipe heat exchange system are used as heat sources of the heat supply terminal in parallel; the solar heat collector heats the solar water tank, and after the water temperature in the solar water tank is raised, heat in the solar water tank is utilized to supply heat to the heat supply terminal through the heating circulating pump; when the water temperature in the solar water tank cannot meet the heating temperature requirement by heating through the solar heat collecting system, the heat stored in the soil is extracted through the underground buried pipe heat exchange system, and the solar water tank is heated after the temperature is raised;
The intelligent control soil heat accumulation type solar heat supply integrated system is composed of a solar heat supply integrated system, a soil heat accumulation system, a power circuit system and a control system; the soil heat storage system is formed by burying a vertical sleeve type underground pipe-buried heat exchanger in heat storage soil, and the control system is formed by connecting a PLC (programmable logic controller) industrial controller and controlling the solar heat supply comprehensive system. The water inlet and outlet of the solar heat collector are connected with the solar water tank by adopting a circulating pump; the heat supply terminal and the standby heat source are connected in series and are connected with the solar water tank through the circulating pump. The soil heat storage system is formed by burying a vertical sleeve type underground pipe laying heat exchanger in heat storage soil, and water inlet and outlet of the vertical sleeve type underground pipe laying system are connected with a solar water tank by adopting a circulating pump.
The invention relates to a solar heat supply comprehensive system, which consists of a solar heat collector, a solar water tank, a circulating pump, a heat supply terminal and a standby heat source, wherein a water inlet and a water outlet of the solar heat collector are connected with the solar water tank by the circulating pump; the heat supply terminal and the standby heat source are connected in series and are connected with the solar water tank through the circulating pump;
The soil heat storage system is formed by burying a vertical sleeve type underground pipe laying heat exchanger in heat storage soil, and water inlet and outlet of the vertical sleeve type underground pipe laying system are connected with a solar water tank by adopting a circulating pump;
the power circuit system of the invention uses a three-phase 380V or single-phase 220V AC power supply as energy to be provided for various pumps of the invention, and uses a 24V DC power supply as energy to be provided for a control system;
the control system of the invention is composed of a PLC industrial controller, the model is EX3G-100HA and corresponding control connection and communication connection lines, and other singlechips suitable for the invention can be selected.
Advantageous effects
The underground pipe-buried heat exchange system for solar heating plays roles in storing heat and adjusting the surplus of solar energy in non-heating seasons, so that the annual comprehensive utilization rate of the system is improved; meanwhile, in the heating season, the solar energy and the heat storage of the underground buried pipe are utilized for heating together, so that the heat supply guarantee rate of the solar system is integrally improved.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
FIG. 2 is a connection diagram of the control chip of the present invention.
Fig. 3 is a circuit diagram of the intelligent control actuator of the present invention.
FIG. 4 is a circuit diagram of a strong electrokinetic structure of the present invention.
Fig. 5 is a schematic diagram of the row terminal connection of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The invention is described below in connection with fig. 1: 30 is a solar heat collector, Rt1 is a solar heat collection array temperature sensor T1, M1 is a solar heat collection circulating pump, 32 is a solar hot water tank, Rt2 is a solar water tank bottom temperature sensor T2; 33 is a vertical sleeve type underground pipe laying heat storage system, Rt5 is an underground soil heat storage temperature sensor T4; rt4 is a water tank heating temperature sensor T3; m3 is a heating circulating pump, M4 is an underground heat storage buried pipe circulating pump, R is auxiliary heat source equipment, 34 is a heat supply terminal, 35 is a hot water point, 36 is a hot water heat exchanger, and 37 and 38 are conversion valves.
The working process of the system is as follows:
in non-heating seasons, when the value of the solar heat collection temperature sensor Rt1 is higher than that of the solar water tank bottom temperature sensor Rt2, the solar heat collection circulating pump M1 conveys working media from the solar water tank 32 to the solar heat collector 30 for circulating heating; the underground heat storage circulating pump M4 sends water in the solar water storage tank to the vertical sleeve type underground pipe heat storage system 33, stores the energy of the solar heat collector in the soil, and raises the soil temperature Rt 5.
In order to ensure the heat storage effect, the vertical sleeve type lower buried pipe heat storage system 33 is designed, the buried pipe depth is approximately equal to the planar occupied diameter of the system buried pipes, and the center distance of each buried pipe is less than 0.5 m so as to improve the heat storage density. Before heating begins, the temperature of the underground pipe-buried heat storage system is raised to be higher than the designed working temperature of heating.
In the heating season, the solar heat collecting circulating pump M1 conveys the working medium from the solar water storage tank 32 to the solar heat collector 30 for circulating heating; the heating circulating pump M3 heats the water in the solar water storage tank to the heating terminal 34, and after heat exchange is performed by the hot water heat exchanger 36, domestic hot water is supplied to the hot water consumption point 36; the valves 37 and 38 can realize the switching off and switching of the hot water function and the heating function. When the value of the heating temperature sensor Rt4 in the solar water tank 32 is lower than the heating design temperature, the underground heat storage circulation pump M4 extracts the heat stored in the soil through the underground piping system 33, heats the solar water tank 32, raises the heating temperature Rt4 in the tank, and then heats the heating terminal 34 and supplies hot water to the hot water supply point 35. When the underground heat storage capacity is insufficient due to extreme weather in a heating season, the numerical value of the soil temperature sensor Rt5 is too low, so that the water tank heating temperature sensor Rt4 cannot meet the designed heating temperature, and when water in the solar water storage tank 32 passes through the auxiliary heat source device R, the auxiliary heat source device R is started to heat, the temperature is raised, and heating is performed on the heat supply terminal 34 and hot water is supplied to the hot water point 35.
The working states of the vertical casing type underground pipe-laying heat storage system 33 are divided into two types: a non-heating season heat storage mode and a heating season heating mode; in the non-heating season heat storage mode, the solar hot water tank 32 is used as a heat source, heat is stored in the soil through the underground storage circulating pump M4 and the vertical sleeve type underground buried pipe heat storage system 33, and the numerical value of the soil temperature sensor Rt5 is increased to be higher than the heating design temperature; in the heating mode in the heating season, soil is used as a heat source, heat storage in the soil is extracted through an underground storage circulating pump M4 and a vertical sleeve type underground buried pipe heat storage system 33, and the heating temperature Rt4 in a water tank is increased, so that the requirements of heating and hot water supply temperature are met.
The invention is described below in connection with fig. 2:
the power supply circuit system of the invention is composed of alternating current AC220V and direct current DC 24V; an external alternating current AC220V power supply is formed between a live wire terminal L and a ground terminal N, and the live wire terminal L and a zero line ground terminal N of the external alternating current AC220V are connected to a system live wire terminal L1 and a zero line ground terminal N through a QF0 master switch (a circuit breaker with the model of DZ 47-60D 20) to form an alternating current power supply used in the working condition of the invention;
the invention provides a direct current DC24V loop of a power circuit, which is characterized in that alternating current AC220V is input into a DC24V rectifying module circuit through a live wire terminal L1 to form a 0V-24V direct current power supply; the rectifier module circuit can be an existing product, and can also be designed independently through electronic components, so that the DIY direct current circuit applicable to the invention is met;
The PLC industrial controller selected by the invention is EX3G-100HA in model, under the condition of meeting the technical functions of each execution system under the control system of the invention, other similar PLC industrial controllers with applicable models can be adopted, and the technical scheme of a single chip microcomputer plus applicable electrical appliance parts DIY mode can be adopted to replace the PLC industrial controller so as to meet the intelligent control requirement of the invention;
an AD0 control terminal of an industrial controller EX3G-100HA is connected with one end of a sensor Rt1 through a line terminal 1 to form a solar temperature detection branch; the sensor Rt1 is used to detect the outlet temperature of the heat collector 30; comparing the controller EX3G-100HA with the sensor Rt2, when the difference value between the sensor Rt1 and the sensor Rt2 is larger than the upper limit of the set value of the industrial controller EX3G-100HA, the industrial controller instructs the solar circulating pump M1 to start; the upper limit of the difference value between the sensor Rt1 and the sensor Rt2 is initially set to 8 ℃, and can be set to other values according to the scale of the system; when the difference value between the sensor Rt1 and the sensor Rt2 is smaller than the lower limit of the set value of the industrial controller EX3G-100HA, the industrial controller instructs the solar circulating pump M1 to stop; the lower limit of the difference value between the sensor Rt1 and the sensor Rt2 is initially set to 3 ℃, and can be set to other values according to the scale of the system;
An AD1 control terminal of an industrial controller EX3G-100HA is connected with one end of a sensor Rt2 through a line terminal 2 to form a temperature detection branch at the lower part of the water tank; the sensor Rt2 is used to detect the lower temperature of the hot water storage tank 32 as an input signal for controlling the solar cycle; comparison with sensor Rt1 by controller EX3G-100 HA; when the difference value between the sensor Rt1 and the sensor Rt2 is larger than the upper limit of the set value of the controller EX3G-100HA, the controller instructs the solar circulating pump M1 to start; the upper limit of the difference value between the sensor Rt1 and the sensor Rt2 is initially set to 8 ℃, and can be set to other values according to the scale of the system; when the difference value between the sensor Rt1 and the sensor Rt2 is smaller than the lower limit of the set value of the controller EX3G-100HA, the controller instructs the solar circulating pump M1 to stop; the lower limit of the difference value between the sensor Rt1 and the sensor Rt2 is initially set to 3 ℃, and can be set to other values according to the scale of the system;
an AD2 control terminal of a controller EX3G-100HA is connected with one end of a sensor Rt4 through a line terminal 3 to form a temperature detection branch at the upper part of the water tank; the sensor Rt4 is used for detecting the upper temperature of the water tank as an input signal for the heat accumulation of the soil buried pipe and the start of the auxiliary heat source. Comparing the controller EX3G-100HA with the sensor Rt5, when the difference value between the sensor Rt4 and the sensor Rt5 is larger than the upper limit of the set value of the industrial controller EX3G-100HA, the industrial controller commands the heat storage circulating pump M4 to start; when the difference value between the sensor Rt4 and the sensor Rt5 is smaller than the lower limit of the set value of the industrial controller EX3G-100HA, the industrial controller instructs the heat storage circulating pump M4 to stop; the upper and lower limits of the difference between the sensor Rt4 and the sensor Rt5 are set to values according to the scale of the system. Comparing with the set value on the controller through controller EX3G-100 HA; when the numerical value of the sensor Rt4 is lower than the lower limit value of the temperature set by the controller EX3G-100HA, the controller instructs the auxiliary heat source R to start; when the sensor Rt4 reaches the upper limit of the set value of the controller, the controller instructs the auxiliary heat source R to close; the temperature in the water supply pipeline is maintained within the set temperature value set by the controller through the control loop, and the heat supply temperature is ensured. The setting value of the sensor Rt4 on the controller is 40-60 ℃, and other values can be set according to the use requirement of a user;
An AD3 control terminal of the controller EX3G-100HA is connected with one end of the sensor Rt5 through a line bank terminal 4 to form a heat storage temperature detection branch of the soil buried pipe; comparing the controller EX3G-100HA with the sensor Rt4, when the difference value between the sensor Rt4 and the sensor Rt5 is larger than the upper limit of the set value of the industrial controller EX3G-100HA, the industrial controller commands the heat storage circulating pump M4 to start; when the difference value between the sensor Rt4 and the sensor Rt5 is smaller than the lower limit of the set value of the industrial controller EX3G-100HA, the industrial controller instructs the heat storage circulating pump M4 to stop; the upper and lower limits of the difference between the sensor Rt4 and the sensor Rt5 are set to values according to the scale of the system.
The COM terminal of the industrial controller EX3G-100HA is connected with the sensor Rt1, the sensor Rt2, the sensor Rt4 and the other end of the sensor Rt5 in parallel through the line bank terminal 5, and forms a detection loop with the branch where the COM terminal and the sensor Rt5 are located, wherein the detection loop comprises a solar temperature detection loop, a water tank bottom temperature detection loop, a water tank upper temperature detection loop and a soil buried pipe heat storage temperature detection branch;
an AD4 terminal of an industrial controller EX3G-100HA is connected with a sensor LT through a port 6 of a line bank terminal to form one branch of a water level detection branch;
the 24V terminal of the industrial controller EX3G-100HA is connected with the sensor LT through the port 7 of the line bank terminal to form the other branch of the water level detection branch; the water level sensor LT is used to detect the water level height of the hot water storage tank 32; the actual value is detected by the controller EX3G-100HA, when the value of the sensor LT is lower than WL set by the controller, the controller instructs to supplement cold water to the hot water storage tank 32, and when the value of the sensor LT is lower than WH set by the controller, the controller instructs to stop water supplement;
An X0 terminal of an industrial controller EX3G-100HA is connected with a connecting end of a pressure gauge P for setting a low-voltage value through a line terminal 8, when a low-voltage terminal of the pressure gauge P gives an instruction for starting a heating circulating pump M3, a KM3 contactor is triggered through an intermediate relay KA3 connected with a control end Y3 of the controller, and a heating circulating pump M3 starts to work through low-voltage triggering;
when the pressure of a pressure gauge P is higher than a set value, a control end X1 of the pressure gauge P, which is connected with the controller and sets a high-pressure value, of a controller X1 terminal of the controller EX 3-100 HA gives an instruction for closing the heating circulating pump M3, a KM3 contactor is triggered through a relay switch KA3 connected with a control end Y4 of the controller, and the heating circulating pump M3 is triggered through high pressure;
a 0V terminal of a controller EX3G-100HA is connected with a common end of a pressure gauge P, and a pressure gauge P low-voltage connecting end branch circuit connected with an X0 terminal forms a low-voltage detection loop; a 0V terminal of a controller EX3G-100HA is connected with a common end of a pressure gauge P, and a pressure gauge P high-voltage connecting end branch circuit connected with an X1 terminal forms a high-voltage detection loop;
a Y1 terminal of a controller EX3G-100HA is connected with a contactor KA2, and then is connected with a contactor KM1 (model CJX2-0910 AC220V, and other similar products can be used for replacing the contactor KM 1) in series to form a solar heat collection circulation control circuit;
A Y3 terminal of a controller EX3G-100HA is connected with a contactor KA3, and then is connected with a contactor KM3 (model CJX2-0910 AC220V, and other similar products can be used for replacing the contactor KM 3) in series to form a heating circulation control circuit;
a Y4 terminal of a controller EX3G-100HA is connected with a contactor KA4, and then is connected with a contactor KM4 (model CJX2-0910 AC220V, and other similar products can be used for replacing the contactor KM 4) in series to form a soil buried pipe heat storage circulation control circuit;
the controller EX3G-100HA controls the terminal Y7, corresponds to the communication contactor KA8, is respectively connected with the port of the line bank terminal 15/16, the communication control switch contactor KA8 is used for opening the auxiliary heat source R for heating, and the communication control switch contactor KA8 is used for closing the auxiliary heat source R at the port 16; the above connection relation forms the auxiliary heating control loop of the invention; the auxiliary heat source R is used for ensuring that the heat supply is maintained above a certain numerical value; detecting the value of the sensor Rt4 through the controller EX3G-100 HA; when the numerical value of the sensor Rt4 is lower than the lower limit of the temperature value set by the controller EX3G-100HA, the controller instructs the auxiliary heat source R to start, and when the numerical value of the sensor Rt4 reaches the upper limit of the set value of the controller, the auxiliary heat source R is instructed to stop;
the controller EX3G-100HA controls the terminal Y10, and the control switch contactor KA9 is communicated to open or close the alarm HA connected with the port of the line bank terminal 24, and the alarm control loop is formed by the connection relation; when the system fails, the system automatically alarms and sends out specific signals for indicating the failure and reminding maintenance;
The invention is described below in connection with fig. 3:
the KM 1-contactor is a contactor with model CJX2-0910 AC220V, and can be replaced by other similar products; in a solar heat collection circulating circuit, a solar heat collection circulating control circuit is formed by connecting an intermediate relay KA2 and connecting a wiring port Y1 of a controller in series;
the KM 3-contactor is a contactor with model CJX2-0910 AC220V, and can be replaced by other similar products; in a heat supply circulating circuit, an intermediate relay KA3 is connected and then a wiring port Y3 of a connecting controller is connected in series to form a heat supply circulating control circuit;
the KM 4-contactor is a contactor with model CJX2-0910 AC220V, and can be replaced by other similar products; in the soil buried pipe heat storage circulation circuit, an intermediate relay KA4 is connected and then a wiring port Y4 of a connection controller is connected in series to form a soil buried pipe heat storage circulation control circuit;
the R-auxiliary heat source is respectively connected with the ports of the line bank terminal 15/16, the opening state of the heat source R is opened by a 15-port communication control switch contactor KA8, the closing state of the heat source R is closed by a 16-port communication control switch contactor KA8, the contactor KA8 is correspondingly connected with a controller EX3G-100HA control terminal Y7, and the auxiliary heating control loop is formed by the connection relation; the auxiliary heat source R is used for ensuring that the heat supply is maintained above a certain numerical value; detecting the value of the sensor Rt4 through the controller EX3G-100 HA; when the numerical value of the sensor Rt4 is lower than the lower limit of the temperature value set by the controller EX3G-100HA, the controller instructs the auxiliary heat source R to start, and when the numerical value of the sensor Rt4 reaches the upper limit of the set value of the controller, the auxiliary heat source R is instructed to stop;
The HA-alarm is connected with the port of the line bank terminal 24, the other end of the HA-alarm is communicated with a control switch contactor KA9 to be opened or closed, a contactor KA9 is correspondingly communicated with a controller EX3G-100HA control terminal Y10, and the connection relation forms an alarm control loop; when the system fails, the system automatically alarms and sends out specific signals for indicating the failure and reminding maintenance;
the invention is described below in connection with fig. 4:
QF 0-main switch, which is a circuit breaker with model number DZ 47-60D 20 and can be replaced by other similar applicable model numbers; an external alternating current power supply AC220V live wire terminal L and a zero line grounding terminal N are connected to a main switch of a system live wire terminal L1 and a zero line grounding terminal N;
QF 1-shunt switch, which is a DZ 47-60D 10 breaker and can be replaced by other similar applicable models; the KM 1-contactor is a contactor with model CJX2-0910 AC220V, and can be replaced by other similar applicable products; m1-a solar heat collection circulating pump with power of 700W, wherein the power can be set according to the heating area, the water consumption of hot water and the total heat collection requirement; an AC220V AC power supply live wire terminal L1 and a zero line grounding end N are connected with a shunt switch QF1, are continuously connected with a contactor KM1 and are further connected with a solar heat collection circulating pump M1 to form a solar heat collection circulating circuit;
QF 3-shunt switch, model DZ 47-60D 10 breaker can be replaced with other models; the KM 3-contactor is a contactor with model CJX2-0910 AC220V, and can be replaced by other similar applicable products; m3-a heating circulating pump with power of 1500W, wherein the power can be determined according to the number of heat supply households and the total heat collection requirement; an AC220V AC power supply live wire terminal L1 and a zero line grounding terminal N are connected with a shunt switch QF3, a contactor KM3 is continuously connected, and then a heating circulating pump M3 is connected to form a heating circulating circuit;
QF 4-shunt switch, which is a circuit breaker with model number DZ 47-60D 10 and can be replaced by other similar products; the KM 4-contactor is a contactor with model CJX2-0910 AC220V, and can be replaced by other similar products; m4-a soil buried pipe heat storage circulating pump with the power of 1000W, which can be determined according to the area and the heat storage capacity of the heat collector; the heat storage circulating circuit is formed by connecting an AC220V alternating current power supply live wire terminal L1, a zero line grounding terminal N, a shunt switch QF4, a contactor KM4 and a soil buried pipe heat storage circulating pump M4;
DF-exhaust fan, controller heat abstractor, 5W, can be set according to the heat dissipation demand of control box;
the invention is described below in connection with fig. 5:
Rt 1-solar temperature sensor, one end of which is connected with AD0 control terminal of industrial controller EX3G-100HA through line bank terminal 1, the other end of sensor Rt1 is connected with sensor Rt2, sensor Rt4 and the other end of sensor Rt5, and is connected with COM terminal of industrial controller EX3G-100HA through line bank terminal 5 to form a loop; the sensor Rt1 is used to detect the outlet temperature of the heat collector 30; comparing the controller EX3G-100HA with the sensor Rt2, when the difference value between the sensor Rt1 and the sensor Rt2 is larger than the upper limit of the set value of the industrial controller EX3G-100HA, the industrial controller instructs the solar circulating pump M1 to start; the upper limit of the difference value between the sensor Rt1 and the sensor Rt2 is initially set to 8 ℃, and can be set to other values according to the scale of the system; when the difference value between the sensor Rt1 and the sensor Rt2 is smaller than the lower limit of the set value of the industrial controller EX3G-100HA, the industrial controller instructs the solar circulating pump M1 to stop; the lower limit of the difference value between the sensor Rt1 and the sensor Rt2 is initially set to 3 ℃, and can be set to other values according to the scale of the system;
rt 2-water tank lower temperature sensor, one end of which is connected with AD1 control terminal of industrial controller EX3G-100HA through line terminal 2, the other end of sensor Rt2 is connected with sensor Rt1, sensor Rt3 and the other end of sensor Rt4, and is connected with COM terminal of industrial controller EX3G-100HA through line terminal 5 to form a loop; the sensor Rt2 is used to detect the lower temperature of the hot water storage tank 32 as an input signal for controlling the solar cycle; comparison with sensor Rt1 by controller EX3G-100 HA; when the difference value between the sensor Rt1 and the sensor Rt2 is larger than the upper limit of the set value of the controller EX3G-100HA, the controller instructs the solar circulating pump M1 to start; the upper limit of the difference value between the sensor Rt1 and the sensor Rt2 is initially set to 8 ℃, and can be set to other values according to the scale of the system; when the difference value between the sensor Rt1 and the sensor Rt2 is smaller than the lower limit of the set value of the controller EX3G-100HA, the controller instructs the solar circulating pump M1 to stop; the lower limit of the difference value between the sensor Rt1 and the sensor Rt2 is initially set to 3 ℃, and can be set to other values according to the scale of the system;
Rt 4-temperature sensor on the upper part of the water tank, one end of which is connected with AD3 control terminal of industrial controller EX3G-100HA through line terminal 3, the other end of sensor Rt4 is connected with sensor Rt1, sensor Rt3 and the other end of sensor Rt5, and is connected with COM terminal of industrial controller EX3G-100HA through line terminal 5 to form a loop; the sensor Rt4 is used for detecting the upper temperature of the water tank as an input signal for the heat accumulation of the soil buried pipe and the start of the auxiliary heat source. Comparing the controller EX3G-100HA with the sensor Rt5, when the difference value between the sensor Rt4 and the sensor Rt5 is larger than the upper limit of the set value of the industrial controller EX3G-100HA, the industrial controller commands the heat storage circulating pump M4 to start; when the difference value between the sensor Rt4 and the sensor Rt5 is smaller than the lower limit of the set value of the industrial controller EX3G-100HA, the industrial controller instructs the heat storage circulating pump M4 to stop; the upper and lower limits of the difference between the sensor Rt4 and the sensor Rt5 are set to values according to the scale of the system. Comparing with the set value on the controller through controller EX3G-100 HA; when the numerical value of the sensor Rt4 is lower than the lower limit value of the temperature set by the controller EX3G-100HA, the controller instructs the auxiliary heat source R to start; when the sensor Rt4 reaches the upper limit of the set value of the controller, the controller instructs the auxiliary heat source R to close; the temperature in the water supply pipeline is maintained within the set temperature value set by the controller through the control loop, and the heat supply temperature is ensured. The setting value of the sensor Rt4 on the controller is 40-60 ℃, and other values can be set according to the use requirement of a user;
The LT-water tank liquid level sensor is respectively connected with ports of the line row terminals 6 and 7, the port 6 is communicated with an AD4 control terminal of the controller EX3G-100HA, and the port 7 is communicated with a 24V power supply of the controller EX3G-100 HA; the above connections form a water level detection loop; the water level sensor LT is used to detect the water level height of the hot water storage tank 32; the actual value is detected by the controller EX3G-100HA, when the value of the sensor LT is lower than WL set by the controller, the controller instructs to supplement cold water to the hot water storage tank 32, and when the value of the sensor LT is lower than WH set by the controller, the controller instructs to stop water supplement;
when the pressure is lower than a set value, the pressure is connected with a control end X0 of the controller to give an instruction for starting a heating circulating pump M3, and a KM3 contactor is triggered through a relay switch KA3 connected with a control end Y3 of the controller;
the 2-RS 485-communication port is connected with the port of the line bank terminal 11/12, and the high-level port 11 is correspondingly connected with the 2A-P control terminal of the controller EX3G-100 HA; the port 12 with low level is connected with the 2B-P control terminal of the connection controller EX3G-100 HA; the connection forms a 2-RS485 communication loop of the invention;
the 3-RS 485-communication port is respectively connected with the port of the line bank terminal 13/14, and the high-level port 13 is correspondingly communicated with the 3A-P control terminal of the controller EX3G-100 HA; the port 14 with low level is correspondingly communicated with the 3B-P control terminal of the controller EX3G-100 HA; the 3-RS485 communication loop is formed by the connection; the communication port is used for realizing remote monitoring of the controller and implementing a management function on system operation;
The R-auxiliary heat source is respectively connected with the ports of the line bank terminal 15/16, the opening state of the heat source R is opened by a 15-port communication control switch contactor KA8, the closing state of the heat source R is closed by a 16-port communication control switch contactor KA8, the contactor KA8 is correspondingly connected with a controller EX3G-100HA control terminal Y7, and the auxiliary heating control loop is formed by the connection relation; the auxiliary heat source R is used for ensuring that the heat supply is maintained above a certain numerical value; detecting the value of the sensor Rt4 through the controller EX3G-100 HA; when the numerical value of the sensor Rt4 is lower than the lower limit of the temperature value set by the controller EX3G-100HA, the controller instructs the auxiliary heat source R to start, and when the numerical value of the sensor Rt4 reaches the upper limit of the set value of the controller, the auxiliary heat source R is instructed to stop;
the HA-alarm is connected with the port of the line bank terminal 24, the other end of the HA-alarm is communicated with a control switch contactor KA9 to be opened or closed, a contactor KA9 is correspondingly communicated with a controller EX3G-100HA control terminal Y10, and the connection relation forms an alarm control loop; when the system fails, the system can automatically alarm and send out specific signals for indicating the failure and reminding maintenance. The embodiments of the present invention can be implemented according to the detailed embodiments of the present invention, which is described in the following description with reference to the drawings and the detailed description of the drawings in fig. 1 to 5.
While this invention has been described in detail in connection with preferred embodiments for practical purposes, it is to be understood that the invention is not limited to the disclosed embodiments and the drawings. Also, the present invention is intended to cover various modifications and variations falling within the technical spirit and scope of the appended claims.
First, the underground vertical double pipe heat exchanger of the present invention may be replaced by a pipe heat exchanger of a stacked type of underground horizontal serpentine pipes, and its technology is essentially another embodiment of the technical idea of the present invention.
By way of example, the QF0 master switch DZ 47-60D 20 breaker, QF1 shunt switch DZ 47-60D 10 breaker, QF3 shunt switch DZ 47-60D 10 breaker, QF4 shunt switch DZ 47-60D 10 breaker and the controller EX3G-100HA adopt a discrete control mode, if necessary, QF0 master switch DZ 47-60D 20 breaker, QF1 shunt switch DZ 47-60D 10 breaker, QF3 shunt switch DZ 47-60D 10 breaker, QF4 shunt switch DZ 47-60D 10 breaker and the controller EX3G-100HA can adopt an intelligent integrated control connection mode, and the scheme is essentially another embodiment of the technical idea of the present invention.
The intelligent control solar water heating system comprises a power supply circuit, a control circuit and an execution system, wherein the execution system is automatically controlled by the control circuit, and hot water heated by solar energy is provided for 24 hours; the execution system is a solar heat collection execution system, a water replenishing execution system and a hot water supply execution system and is automatically controlled by a control circuit; the solar heat collection execution system is a traditional solar flat plate collector, or a vacuum tube collector, or a heat pipe collector, or a solar flat plate collector with a reflecting device, or a solar vacuum tube collector with a reflecting device, or a solar heat pipe collector with a reflecting device; the hot water supply execution system is provided with a calling system, and the calling system is formed by controlling a calling indicator lamp and a calling key of each user together by a control system; the control circuit is a PLC industrial controller or a control circuit which is formed by adopting a singlechip chip and applicable electric appliance parts in a DIY mode; the solar heat collection execution system comprises a heat storage water tank, a solar heat collection water supply pipe, a solar temperature sensor, a solar heat collector, a solar reflecting device, a solar heat collection water return pipe and a solar heat collection circulating pump; the auxiliary heating cycle execution system comprises a heat storage water tank, an auxiliary heat source water supply pipe, an auxiliary heat source sensor, an auxiliary heat source water return pipe and an auxiliary heat source circulating pump; the backwater circulation execution system is composed of a water storage tank, a backwater temperature sensor, a backwater electric valve, a hot water backwater main pipe, a household hot water backwater household vertical pipe and a combined starting hot water circulating pump; the water replenishing executing system consists of a tap water inlet pipe, a water replenishing electric valve, a hot water return main pipe, a water storage tank and a water level sensor; the hot water supply execution system comprises a heat storage water tank, a hot water circulating pump, a pressure gauge, a hot water supply main pipe, a hot water supply household inlet vertical pipe of each household, a calling system, a household inlet water terminal, a water charge metering device and a hot water return main pipe; the alarm execution system is composed of an alarm circuit controlled by a control system, namely a controller, a switch contactor and an alarm; the hot water supply execution system is provided with a water fee metering device system which is a water meter, an IC card intelligent water meter, an ultrasonic intelligent water meter, an infrared intelligent water meter or an APP small program intelligent charging water meter.

Claims (3)

1. An intelligent control soil heat accumulation type solar heat supply integrated system, in particular to an intelligent control soil heat accumulation type solar heat supply integrated system which is composed of a solar heat supply integrated system, a soil heat accumulation system, a power supply circuit system and a control system, and is characterized in that,
a solar heat supply comprehensive system comprises a solar heat collector, a solar water tank, a circulating pump, a heat supply terminal and a standby heat source,
the soil heat storage system is formed by burying a vertical sleeve type underground pipe laying heat exchanger in heat storage soil,
the control system is formed by connecting a PLC industrial controller and controlling a solar heat supply comprehensive system.
2. The intelligent control soil thermal storage type solar heat supply integrated system according to claim 1,
the soil heat storage system is formed by burying a vertical sleeve type underground pipe laying heat exchanger in heat storage soil, and water inlet and outlet of the vertical sleeve type underground pipe laying system are connected with a solar water tank by adopting a circulating pump.
3. The intelligent control soil thermal storage type solar heat supply integrated system according to claim 1,
the water inlet and outlet of the solar heat collector are connected with the solar water tank by adopting a circulating pump; the heat supply terminal and the standby heat source are connected in series and are connected with the solar water tank through the circulating pump.
CN201910436743.6A 2019-05-23 2019-05-23 Intelligent control soil heat accumulation type solar heat supply integrated system Pending CN111981545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910436743.6A CN111981545A (en) 2019-05-23 2019-05-23 Intelligent control soil heat accumulation type solar heat supply integrated system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910436743.6A CN111981545A (en) 2019-05-23 2019-05-23 Intelligent control soil heat accumulation type solar heat supply integrated system

Publications (1)

Publication Number Publication Date
CN111981545A true CN111981545A (en) 2020-11-24

Family

ID=73437209

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910436743.6A Pending CN111981545A (en) 2019-05-23 2019-05-23 Intelligent control soil heat accumulation type solar heat supply integrated system

Country Status (1)

Country Link
CN (1) CN111981545A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113834221A (en) * 2021-10-15 2021-12-24 中国地质科学院水文地质环境地质研究所 Low-temperature geothermal utilization taste improving device and method based on photo-thermal energy

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113834221A (en) * 2021-10-15 2021-12-24 中国地质科学院水文地质环境地质研究所 Low-temperature geothermal utilization taste improving device and method based on photo-thermal energy
CN113834221B (en) * 2021-10-15 2023-09-29 中国地质科学院水文地质环境地质研究所 Low-temperature geothermal energy utilization taste lifter and method based on photo-thermal energy

Similar Documents

Publication Publication Date Title
CN104864449A (en) Hot water heating device having solar energy and off-peak electricity heating energy storage function
CN1743738A (en) Technical method and apparatus for intelligent heating and water-heating utilizing solar energy
CN107255304A (en) Multi-energy complementary heating device based on solar energy
CN204612185U (en) A kind of solar energy and earth source heat pump composite hot-water system
CN204404503U (en) A kind of photovoltaic water heater
CN102705931A (en) Multifunctional solar air conditioning system
CN201531952U (en) Solar hot water system for high-rise building
CN114061352A (en) Electric heat energy storage heating device, heating system based on phase change material
CN109268922A (en) Direct-expansion type heat pump adds photovoltaic power generation coupling to utilize heating system
CN111981545A (en) Intelligent control soil heat accumulation type solar heat supply integrated system
CN204616797U (en) Solar energy frog survives the winter culturing pool
CN206890628U (en) A kind of wind-force heating system
CN109405045A (en) A kind of agricultural facility self-heating system and method
CN201412120Y (en) Solar power warming system for oil field wellhead
CN2823866Y (en) Solar intelligent apparatus for heating air and water
CN211903334U (en) Compound sanitary hot water system
CN203413712U (en) Multi-energy water heater for preparing life hot water in large-scale public building
CN209978160U (en) Phase-change heat storage based floor heating and hot water supply system
CN204830072U (en) Environmental protection and energy saving gather hot water system
CN202141192U (en) A water source heat pump water heating device combined with a solar water heater
CN206973878U (en) A kind of heat accumulating type electromagnetism wall hanging heating stove
CN207247347U (en) Multi-energy complementary heating device based on solar energy
CN101592353B (en) Heat supply system and heat supply method
CN110906433A (en) Intelligent control solar water heating system
CN217402876U (en) Central heating solar water heating system for high-rise residential district

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
DD01 Delivery of document by public notice
DD01 Delivery of document by public notice

Addressee: Li Na

Document name: Notice before the expiration of the time limit for actual trial request

DD01 Delivery of document by public notice
DD01 Delivery of document by public notice

Addressee: Li Na

Document name: Notice of deemed withdrawal

WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20201124