CN114017827A - Energy-saving water mixing heating system and heating control method - Google Patents
Energy-saving water mixing heating system and heating control method Download PDFInfo
- Publication number
- CN114017827A CN114017827A CN202111244936.5A CN202111244936A CN114017827A CN 114017827 A CN114017827 A CN 114017827A CN 202111244936 A CN202111244936 A CN 202111244936A CN 114017827 A CN114017827 A CN 114017827A
- Authority
- CN
- China
- Prior art keywords
- water
- temperature
- primary
- pressure
- frequency pump
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 351
- 238000010438 heat treatment Methods 0.000 title claims abstract description 118
- 238000002156 mixing Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000000746 purification Methods 0.000 claims abstract description 60
- 230000008878 coupling Effects 0.000 claims abstract description 57
- 238000010168 coupling process Methods 0.000 claims abstract description 57
- 238000005859 coupling reaction Methods 0.000 claims abstract description 57
- 230000001105 regulatory effect Effects 0.000 claims abstract description 31
- 238000005202 decontamination Methods 0.000 claims abstract description 17
- 230000003588 decontaminative effect Effects 0.000 claims abstract description 17
- 230000033228 biological regulation Effects 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 19
- 238000012544 monitoring process Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 14
- 239000008236 heating water Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000003245 coal Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000002706 hydrostatic effect Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- F24D19/00—Details
- F24D19/0092—Devices for preventing or removing corrosion, slime or scale
-
- 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
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
-
- 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
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
-
- 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
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses an energy-saving water mixing heating system and a heating control method, and belongs to the technical field of heating. The system comprises a control system, and a heat source supply unit, a temperature and pressure regulating unit, a constant-pressure coupling temperature control and purification unit, a climate compensation and regulation unit and a heating terminal which are sequentially connected according to the water flow direction; the temperature and pressure regulating unit comprises a first decontamination device, a first variable frequency pump, an electric regulating valve and an opening and closing valve, the climate compensation regulating unit comprises a variable frequency pump set, and the heat energy lost in the conveying pipe network is supplemented by the flow of secondary water supply regulated by the power of the variable frequency pump set. According to the invention, the secondary return water and the primary inlet water are mixed, so that the temperature of mixed water reaches 45-60 ℃, the temperature of the secondary inlet water is balanced by adjusting the variable frequency pump set, the secondary heating temperature is increased, the terminal heating requirement can be met without adjusting the first variable frequency pump, the energy consumption and the heat consumption of a boiler are greatly saved, and the primary heat source is saved by 30-60% compared with the traditional plate type heat exchange heating equipment.
Description
Technical Field
The invention relates to the technical field of heating, in particular to an energy-saving water mixing heating system and further provides a heating control method of the heating system.
Background
Winter heating is the living demand of residents in northern China, and the conventional heating mode at present is as follows: the boiler heating water is passed through in the municipal administration to more than 95 ℃, and the water after will heating passes through the pipeline and carries to the user, and the user adopts the heat dissipation of heating installation, makes indoor temperature rise. The boiler heating is to convert a large amount of coal into heat energy of water through combustion, the coal is a non-renewable resource, and a large amount of particle smoke is generated in the combustion process of the coal to pollute the environment.
In addition, hot water is carried the circulation in municipal pipe network, and the heat can lose, and the user is more, consequently reaches the partial user of carrying the end, and the heat is less, is not enough to indoor intensification. In order to heat all the user rooms in the pipeline, the flow of primary hot water in a municipal pipe network is increased, but the consumption of the hot water with the temperature of more than 95 ℃ is increased, water resources are wasted, the combustion of coal in a boiler is increased, and the environment is further polluted.
Disclosure of Invention
In order to solve the problems, the invention provides an energy-saving water mixing heating system which is simple in structure, can be applied to the existing municipal heating pipe network, does not need to greatly improve the existing municipal pipe network, and can achieve the effects of energy conservation, emission reduction and water conservation in the whole municipal heating.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an energy-saving water mixing heating system comprises a control system, and a heat source supply unit, a temperature and pressure regulating unit, a constant-pressure coupling temperature control purification unit, a climate compensation regulating unit and a heating terminal which are sequentially connected according to the water flow direction;
the heat source supply unit is used for heating water and then conveying the heated water to a heating terminal, the heat source supply unit comprises a boiler and a conveying pipe network, and the conveying pipe network comprises a primary water inlet pipeline, a secondary water inlet pipeline, a primary water return pipeline and a secondary water return pipeline;
the temperature and pressure regulating unit comprises a first dirt removing device, a first variable frequency pump, an electric regulating valve and an opening and closing valve, and the first dirt removing device and the first variable frequency pump are sequentially arranged on the primary water inlet pipeline according to the water flow direction; the electric regulating valve and the opening and closing valve are sequentially arranged on the primary water return pipeline according to the water flow direction;
the constant-pressure coupling temperature control purification unit is used for mixing hot water in the primary water inlet pipeline and return water in the secondary water return pipeline and serving as secondary water supply to enter a user heating terminal from the secondary water inlet pipeline;
the climate compensation adjusting unit comprises a variable frequency pump set, and the flow of secondary water supply is adjusted by the power of the variable frequency pump set to supplement the heat energy lost in the conveying pipe network;
the control system comprises a data acquisition module and a PLC control system in electrical signal connection with the data acquisition module, wherein the data acquisition module comprises a plurality of temperature sensors, flow sensors and pressure sensors, the temperature sensors are at least arranged at a primary hot water outlet of the boiler, a secondary water inlet pipeline close to a constant-pressure coupling temperature-control purification unit, the constant-pressure coupling temperature-control purification unit close to the constant-pressure coupling temperature-control purification unit and a primary water inlet pipeline between the opening and closing valve and the electric regulating valve; and the PLC control system is electrically connected with the first variable frequency pump, the variable frequency pump set and the electric regulating valve respectively.
Furthermore, level pressure coupling accuse temperature purification unit includes muddy water district and filtering area, muddy water district includes once hot water import and secondary hot water export, filtering area includes secondary return water import and return water export, once hot water import passes through once intake pipe is connected with first frequency conversion pump, the secondary hot water export passes through the secondary intake pipe with frequency conversion pump package connects.
Furthermore, a water mixing guide pipe is arranged between the water mixing area and the filtering area, and the water mixing guide pipe guides the return water in the filtering area into the mixing area and mixes the return water with the hot water in the mixing area in sequence.
Furthermore, a filter screen is arranged in the filtering area, and the backwater filtered by the filter screen is guided into the mixing area by the water mixing conduit.
Further, the variable frequency pump set in the climate compensation adjustment unit comprises a main variable frequency pump and at least one auxiliary variable frequency pump.
Furthermore, a second decontamination device is arranged on the secondary water return pipeline.
Furthermore, the pressure sensor is arranged at a primary hot water outlet of the boiler, at a position close to a heating terminal of the secondary water inlet pipeline, at a position close to the constant-pressure coupling temperature-control purification unit of the primary water return pipeline, at a position close to the constant-pressure coupling temperature-control purification unit of the secondary water return pipeline, and on the constant-pressure coupling temperature-control purification unit;
the first decontamination device and the second decontamination device are respectively provided with a pressure difference detection device, and the pressure difference detection devices are electrically connected with the data acquisition module.
A heating control method of a heating system, comprising:
(1) the boiler in the heat source supply unit heats water to 90-95 ℃, hot water flows out of a primary hot water outlet of the boiler and enters a heating terminal through the first decontamination device, the first variable frequency pump, the constant-pressure coupling temperature control purification unit and the variable frequency pump set in sequence, and the hot water used by the heating terminal is recycled to a municipal pipe network through the second decontamination device, the constant-pressure coupling temperature control purification unit and the electric regulating valve in sequence;
(2) monitoring the primary inlet water temperature, the primary inlet water pressure and the primary inlet water flow at the primary hot water outlet of the boiler, and transmitting data to a data acquisition module; the water mixing temperature is detected between the constant-pressure coupling temperature control purification unit and the variable-frequency pump set, and data are transmitted to the data acquisition module; monitoring the secondary return water temperature between the heating terminal and the constant-pressure coupling temperature control purification unit, and sending detection data to a data acquisition module; detecting the primary return water temperature, the primary return water flow and the primary return water pressure in the primary return water pipeline and transmitting data to a data acquisition module;
(3) the PLC control system is provided with a temperature set value and a pressure set value, and the temperature set value changes according to external weather; the data acquisition module transmits the temperature, flow and pressure acquired by each point to a PLC control system for storage; comparing that the secondary return water temperature is inconsistent with the set temperature, and enabling the secondary return water temperature to meet the requirement by adjusting the power of the variable frequency pump set, the electric flow valve and the first variable frequency pump by the PLC control system;
the contrast is once intake pressure and a return water pressure contrast, and PLC control system carries out pressure control through the adjustment to electric flow valve, makes the system reach the constant voltage.
Further, in the step (3), when the secondary return water temperature is lower than the set value, the PLC control system controls and increases the power of the variable frequency pump set, and/or increases the power of the first variable frequency pump, and/or increases the flow of the electric flow valve, and increases the secondary return water inlet flow, and the secondary return water temperature and the mixed water temperature reach dynamic balance.
The invention relates to an energy-saving water mixing heating system and a heating control method, which have the beneficial effects that:
(1) the system replaces a valve with a pump under the condition of not changing the existing municipal heating pipe network, directly installs a constant-pressure coupling temperature control purification unit, a variable-frequency pump set and an electric regulating valve in the heating pipe network, and installs a temperature sensor, a pressure sensor and a flow sensor at the corresponding pipe network. The secondary return water temperature and the mixed water temperature are mainly measured, and the secondary return water temperature and the mixed water temperature are stable and balanced through adjusting the power of the variable frequency pump set and adjusting the flow of the electric control valve, so that the temperature requirement of a heating terminal is guaranteed.
(2) In the constant-pressure coupling temperature control purification unit, secondary return water and primary inlet water are mixed to enable the temperature of mixed water to reach 45-60 ℃, a frequency conversion pump group is adjusted to balance the temperature of the secondary inlet water and increase the temperature of secondary heating, the heating requirement of a terminal can be met without adjusting a first frequency conversion pump (and the primary inlet water flow of a municipal boiler), the energy consumption and the heat consumption of the boiler are greatly saved, and a primary heat source is saved by 30-60% compared with that of the traditional plate type heat exchange heating equipment.
(3) The efficiency of a primary heat source is improved, the heating area is increased by more than 50% compared with a plate heat exchange system under the same condition, and the operation cost is saved by more than 20% compared with a plate heat exchange system.
(4) The constant-pressure coupling temperature control purification unit and the variable-frequency pump set are set, and the system has the functions of temperature regulation pump isolation, backflow control, pressure reduction control, quick turn-off and flow regulation, and solves the problems that the tail end of a heat source of the existing primary heat supply network is low in pressure, slow in flow speed and incapable of normally supplying heat by a low-temperature plate type heat exchange system.
(5) The temperature of the heating terminal can be controlled between 50 ℃ and 100 ℃ by adjusting the variable frequency pump set, and the temperature adaptation range is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the control method of the present invention;
FIG. 3 is a schematic structural diagram of a constant-pressure coupled temperature-controlled purification unit according to the present invention;
the system comprises a heat source supply unit 1, a temperature and pressure regulating unit 2, a constant-pressure coupling temperature control purification unit 3, a climate compensation regulation unit 4, a second decontamination device 5 and a heating terminal 6;
101 primary water inlet pipeline, 102 secondary water inlet pipeline, 103 primary water return pipeline and 104 secondary water return pipeline;
201 a first decontamination device, 202 a first variable frequency pump, 203 an electric regulating valve and 204 an opening and closing valve;
301 water mixing area, 302 filtering area, 303 primary hot water inlet, 304 secondary hot water outlet, 305 secondary backwater inlet, 306 backwater outlet, 307 water mixing conduit, 308 filter screen and 309 drain outlet;
401 main frequency conversion pump, 402 auxiliary frequency conversion pump.
In the context of figure 1 of the drawings,
is a temperature sensor, and is characterized in that,
in the form of a flow sensor, the flow sensor,
is a pressure sensor, Δ p isDirty ware pressure differential detection device.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An energy-saving water mixing heating system is shown in figures 1-3 and comprises a control system, a heat source supply unit 1, a temperature and pressure adjusting unit 2, a constant-pressure coupling temperature control purifying unit 3, a climate compensation adjusting unit 4 and a heating terminal 6 which are sequentially connected according to the water flow direction.
After hot water flows out of the heat source supply unit 1, primary inlet water and secondary return water are mixed in the temperature and pressure adjusting unit 2 and the constant-pressure coupling temperature control purification unit 3, the mixed hot water with the temperature of 45-60 ℃ is conveyed to the heating terminal 6 through the climate compensation adjusting unit 4, the temperature of the hot water input to the heating terminal 6 can be kept at 40-55 ℃ through adjustment of the climate compensation unit, and indoor temperature rise of the heating terminal 6 of a user can be met sufficiently.
In this embodiment, the heat source supply unit 1 is used for heating water and then delivering the heated water to the heating terminal 6, the heat source supply unit 1 includes a boiler and a delivery pipe network, and the delivery pipe network includes a primary water inlet pipeline 101, a secondary water inlet pipeline 102, a primary water return pipeline 103, and a secondary water return pipeline 104.
In this embodiment, the temperature and pressure regulating unit 2 includes a first decontamination device 201, a first variable frequency pump 202, an electric regulating valve 203 and an opening and closing valve 204, and the first decontamination device 201 and the first variable frequency pump 202 are sequentially arranged on the primary water inlet pipeline 101 according to the water flow direction; the electric control valve 203 and the open/close valve 204 are provided in the primary water return line 103 in this order in the water flow direction.
Specifically, in the temperature and pressure regulating unit 2, particularly the electric control valve 203 arranged on the primary water return pipeline 103 and parameter detection, the parameter detection includes detection of the primary water inlet temperature Tg1, the primary water inlet pressure Gg1, the primary water inlet flow, the primary water return temperature Th1, the primary water return pressure Gh1 and the primary water return flow, and the heat consumption (namely the conveying frequency of the first variable frequency pump 202) is calculated through a program of a PLC control system through the measured values of the primary water inlet temperature Tg1, the primary water return temperature Th1 and the primary water inlet pressure Gg 1.
In this embodiment, the constant-pressure coupled temperature-controlled purification unit 3 is configured to mix hot water in the primary water inlet pipeline 101 with return water in the secondary water return pipeline 104, and to enter the user heating terminal 6 from the secondary water inlet pipeline 102 as secondary water supply.
Specifically, the constant-pressure coupling temperature-control purification unit 3 comprises a water mixing area 301 and a filtering area 302, the water mixing area 301 comprises a primary hot water inlet 303 and a secondary hot water outlet 204, the filtering area 302 comprises a secondary return water inlet 305 and a return water outlet 306, the primary hot water inlet 303 is connected with the first variable-frequency pump 202 through a primary water inlet pipeline 101, and the secondary hot water outlet 204 is connected with the variable-frequency pump set through a secondary water inlet pipeline 102. A water mixing conduit 307 is arranged between the water mixing area 301 and the filtering area 302, and the water mixing conduit 307 guides the return water in the filtering area 302 into the mixing area and mixes the return water with the sequential primary hot water in the mixing area. A filter screen 308 is arranged in the filtering area 302, and the backwater filtered by the filter screen 308 is guided into the mixing area by a water mixing guide pipe 307. The filtration zone 302 is provided with a viewing chamber and a drain 309, said drain 309 being provided at the bottom of the filtration zone 302. The observation room is mainly used for observing the sludge condition of the filtering area 302 and cleaning in time.
In this embodiment, the climate compensation adjustment unit 4 includes a variable frequency pump set, and the flow of the secondary water supply is adjusted by the power of the variable frequency pump set to supplement the heat energy lost in the delivery pipe network. In practical applications, the variable frequency pump set of the candidate compensation adjustment unit includes a main variable frequency pump 401 and a sub-variable frequency pump 402. The main variable frequency pump 401 can be adjusted in a conventional state, when the main variable frequency pump 401 breaks down or is maintained, the auxiliary variable frequency pump 402 is started, and the auxiliary variable frequency pump 402 and the main variable frequency pump 401 have the same effect.
In this embodiment, the second dirt removing device 5 is disposed on the secondary water return pipeline 104. The first and second sewage disposal devices 201 and 5 are both existing Y-filters. First scrubbing device 201 and second scrubbing device 5 department all are equipped with dirt separator pressure differential detection device, dirt separator pressure differential detection device and data acquisition module electricity signal connection. When the pressure difference detection device of the dirt separator detects that the data is abnormal, namely the pressure is greater than the set value of the sludge separator, the PLC control system sends out an alarm to remind cleaning. The differential pressure detecting device of the dirt separator is the prior conventional technology, and the structure and the principle thereof are not described in detail herein.
In this embodiment, the control system comprises a data acquisition module and a PLC control system in electrical signal connection with the data acquisition module, the data acquisition module comprises a plurality of temperature sensors, flow sensors and pressure sensors, the temperature sensors are at least arranged at a primary hot water outlet of the boiler, and the secondary water inlet pipeline 102 is close to the constant-pressure coupling temperature-control purification unit 3, and the constant-pressure coupling temperature-control purification unit 3 is close to the constant-pressure coupling temperature-control purification unit 3, and on the primary water inlet pipeline 101 between the on-off valve 204 and the electric control valve 203; the PLC control system is respectively connected with the first variable frequency pump 202, the variable frequency pump set and the electric control valve 203 in an electric control mode.
And (3) adjusting the temperature:
the method mainly comprises 4 monitoring points of a primary water inlet temperature Tg1Tg, a mixed water temperature Tg2, a secondary water return temperature Th2 and a primary water return temperature Th1, particularly a mixed water temperature Tg2 and a secondary water return temperature Th 2.
The mixed water temperature Tg2 is the temperature of hot water entering a user, and under a general state, the mixed water temperature Tg2 reaches 45-60 ℃, so that the temperature entering the user heating terminal 6 can be ensured to be 45-60 ℃, and the indoor temperature can be completely increased.
The secondary return water temperature Th2 is hot water from the user heating terminal 6, and since the temperature of the hot water at the user heating terminal 6 is raised to room temperature, the temperature of the hot water is lowered according to heat conservation, and the secondary return water temperature Th2 reaches 20-40 ℃ of the constant-pressure coupling temperature-control purification unit 3 according to normal heat loss.
The mixed water temperature Tg2 and the secondary return water temperature Th2 transmit temperature signals to a data acquisition module, the data acquisition module transmits the signals to a PLC control system, a set value of the mixed water temperature Tg2 is arranged in the PLC control system, the set value is changed according to the external environment temperature, and when the environment temperature is-20 ℃, the set value can be 60 ℃; when the ambient temperature is-5 ℃, the set value can be 50 ℃; when the ambient temperature is between 0-5 deg.C, the set point can be 40-45 deg.C.
The above-mentioned setting value is only an example, and the specific setting value is automatically adjusted according to the specific temperature of the external natural environment, so that the setting value is dynamic. After the PLC control system receives the mixed water temperature Tg2 and the secondary water return temperature Th2, when the secondary water return temperature Th2 is lower than a set value, the temperature of the user heating terminal 6 is lower, at the moment, the circulation of the secondary water inlet pipeline 102 is increased by increasing the frequency of the variable frequency pump set, the hot water flowing into the user heating terminal 6 is increased, and the temperature is constant. When the secondary water return temperature Th2 is higher than the set value, it indicates that the temperature of the user heating terminal 6 is higher, and at this time, the frequency of the variable frequency pump set can be reduced, so that the flow of hot water flowing into the user heating terminal 6 is reduced, the purpose of cooling is achieved, and energy consumption is saved.
Adjustment of pressure:
the pressure sensors are arranged at a primary hot water outlet of the boiler, a secondary water inlet pipeline 102 close to the heating terminal 6, a primary water return pipeline 103 close to the constant-pressure coupling temperature-control purification unit 3, a secondary water return pipeline 104 close to the constant-pressure coupling temperature-control purification unit 3 and the constant-pressure coupling temperature-control purification unit 3;
the pressure sensor at the primary hot water outlet measures primary water inlet pressure Gg 1;
the pressure sensor at the secondary water inlet pipeline 102 measures the secondary water inlet pressure;
the pressure sensor at the primary water return pipeline 103 measures primary water return pressure Gh 1;
the pressure sensor at the secondary water return pipeline 104 measures the secondary water return pressure;
the hydrostatic pressure of the constant-pressure coupling temperature-control purification unit 3 is measured by a pressure sensor of the constant-pressure coupling temperature-control purification unit 3.
Conventionally, the pressure of the whole system is in a constant state, when deviation occurs between the secondary water inlet pressure and the secondary water return pressure, the fact that a user has a water leakage phenomenon can be shown, the PLC control system can send signals to the monitoring terminal through the Ethernet and the TCP/IP network environment, and a worker monitors the signals through the monitoring terminal and timely repairs the user at the door.
The hydrostatic pressure of the constant-pressure coupling temperature control purification unit 3 is greater than a set pressure value, which indicates that the flow rate between the secondary water inlet pipeline 102 and the secondary water return pipeline 104 is increased, the pressure is too high, and at the moment, the PLC control system can automatically open the electric regulating valve 203 to quickly discharge water in the pipeline, so that the hydrostatic pressure of the constant-pressure coupling temperature control purification unit 3 reaches a set value, and the stable operation of the constant-pressure coupling temperature control purification unit 3 is ensured.
Example 2
As shown in fig. 1 and 3, a heating control method of a heating system specifically includes:
(1) the boiler in the heat source supply unit 1 heats water to 90-95 ℃, hot water flows out from a primary hot water outlet of the boiler and enters the heating terminal 6 through the first decontamination device 201, the first variable frequency pump 202, the constant-pressure coupling temperature control purification unit 3 and the variable frequency pump group in sequence, and the hot water used by the heating terminal 6 is recycled to a municipal pipe network through the second decontamination device 5, the constant-pressure coupling temperature control purification unit 3 and the electric regulating valve 203 in sequence;
(2) monitoring the primary water inlet temperature Tg1, the primary water inlet pressure Gg1 and the primary water inlet flow at a primary hot water outlet of the boiler, and transmitting data to a data acquisition module; the water mixing temperature Tg2 is detected between the constant-pressure coupling temperature control purification unit 3 and the variable-frequency pump set, and data are transmitted to a data acquisition module; monitoring the secondary return water temperature Th2 between the heating terminal 6 and the constant-pressure coupling temperature control purification unit 3, and sending the detection data to a data acquisition module; the primary water return temperature Th1, the primary water return flow and the primary water return pressure Gh1 are detected in a primary water return pipeline 103, and data are transmitted to a data acquisition module;
(3) the PLC control system is provided with a temperature set value and a pressure set value, and the temperature set value is changed according to the external weather; the data acquisition module transmits the temperature, flow and pressure acquired by each point to the PLC control system for storage; and comparing that the secondary water return temperature Th2 is inconsistent with the set temperature, and enabling the secondary water return temperature Th2 to meet the requirement by adjusting the power of the variable frequency pump set, the electric flow valve and the first variable frequency pump 202 through the PLC control system.
For another example, hot water at 90-95 ℃ enters the constant-pressure coupled temperature-controlled purification unit 3 through the primary water inlet pipeline 101, low-temperature water at 20-30 ℃ coming out of the user heating terminal 6 flows back into the constant-pressure coupled temperature-controlled purification unit 3, and the high-temperature water and the low-temperature water are mixed to make the mixed water temperature Tg2 of the water mixing area 301 reach 45-60 ℃, so that the temperature entering the user heating terminal 6 can be ensured to be 45-60 ℃, and the indoor temperature can be completely raised. The mixed water temperature Tg2 and the secondary return water temperature Th2 transmit temperature signals to a data acquisition module, the data acquisition module transmits the signals to a PLC control system, and a set value of the mixed water temperature Tg2 is arranged in the PLC control system and is changed according to the external environment temperature.
After the PLC control system receives the mixed water temperature Tg2 and the secondary water return temperature Th2, when the secondary water return temperature Th2 is lower than a set value, the temperature of the user heating terminal 6 is lower, at the moment, the circulation of the secondary water inlet pipeline 102 is increased by increasing the frequency of the variable frequency pump set, the hot water flowing into the user heating terminal 6 is increased, and the temperature is constant.
When the secondary water return temperature Th2 is higher than the set value, it indicates that the temperature of the user heating terminal 6 is higher, and at this time, the frequency of the variable frequency pump set can be reduced, so that the flow of hot water flowing into the user heating terminal 6 is reduced, the purpose of cooling is achieved, and energy consumption is saved.
For another example, when the mixed water temperature Tg2 is too low, i.e., the flow rate of the primary inlet water is low and does not reach the set value after being mixed with the secondary return water, the power of the first variable frequency pump 202 may be increased to increase the supply amount of the primary inlet water, thereby increasing the temperature.
When the mixed water temperature Tg2 is too high, namely the primary inlet water flow is relatively large, the temperature is far higher than the set value after the mixed water is mixed with the secondary return water, and the primary inlet water causes resource waste at the moment. At this time, the power of the first variable frequency pump 202 can be reduced, and the supply amount of the primary intake water can be reduced, so that the temperature can be lowered.
For another example, when the mixed water temperature Tg2 and the secondary water return temperature Th2 cannot reach the set temperature through the variable frequency pump unit or the first variable frequency pump 202, the variable frequency pump unit and the first variable frequency pump 202 can be controlled to be turned on through the PLC control system, so that the flow rate is increased, and the indoor temperature is increased. In the process, the PLC control system also controls the electric regulating valve 203 to quickly discharge the return water in the pipeline, so that the temperature can be quickly regulated to a constant temperature and a constant pressure.
For another example, for the adjustment of the pressure, when a deviation occurs between the secondary water inlet pressure and the secondary water return pressure, it can be said that the user has a water leakage phenomenon, the PLC control system can send a signal to the monitoring terminal through the ethernet and the TCP/IP network environment, and the staff can monitor through the monitoring terminal and timely and simultaneously repair the user at home.
The hydrostatic pressure of the constant-pressure coupling temperature control purification unit 3 is greater than a set pressure value, which indicates that the flow rate between the secondary water inlet pipeline 102 and the secondary water return pipeline 104 is increased, the pressure is too high, and at the moment, the PLC control system can automatically open the electric regulating valve 203 to quickly discharge water in the pipeline, so that the hydrostatic pressure of the constant-pressure coupling temperature control purification unit 3 reaches a set value, and the stable operation of the constant-pressure coupling temperature control purification unit 3 is ensured.
In the invention, all electrical components, such as a temperature sensor, a pressure sensor and a flow sensor, are all existing sensors. The electric control valve 203 is a common electric control valve, and the variable frequency pump is an electric control variable frequency pump.
The PLC control system is a programmable logic controller, and is an electronic device specially designed for industrial production and operated by digital operation, it adopts a kind of programmable memory for storing program in it, and can implement logic operation, sequential control, timing, counting and arithmetic operation, etc. and can control various mechanical or production processes by means of digital or analog input/output. Is the core part of industrial control. The control system is internally provided with a central processing unit, a memory and an input/output route. The central processing unit is conventional, can compare the number, in the determination of set point, through to the temperature of external environment, utilize chemical engineering thermodynamic formula to calculate the heat, can obtain the flow of the primary water inflow that needs to input and secondary return water. The memory stores and compares data, optimizes the data and obtains a better matching formula, so that the temperature balance of the whole system is more accurate.
Example 3
The system is applied to a certain district in Binxian of Binxian, a PLC control system, a constant-pressure coupling temperature control purification unit 3, a variable-frequency pump set and a first variable-frequency pump 202 (generally an existing municipal lift pump) in the system are directly added into an existing heating pipeline system, and corresponding temperature sensors, pressure sensors and flow sensors are installed at corresponding monitoring points.
The district adopts a power plant heat source for central heat supply, the primary water inlet temperature Tg1 is 93 ℃, the pressure is 0.75Mpa, and the building area of the district is 12 ten thousand square meters. The small area range is area and high area, the low area is 1-13 layers, the area is 43000 square meters, the high area is 14-27 layers, the area is 40000 square meters. User heating terminal 6 adopts plate heat exchanger heating, and through the comparison, it is shown as table 1 and table 2 to obtain data:
TABLE 1 heating temperature and flow rate in the lower area of a certain district in Xianyang City
TABLE 2 heating temperature and flow rate for a high district in Suyang City
It can be seen from tables 1 and 2 that the water inlet flow of the primary water inlet pipeline 101 (i.e., municipal water supply) can be greatly reduced by using the system of the present invention under the condition that the water inlet with the same temperature is adopted and the indoor temperature can be maintained, the low region can be saved by 48.7%, and the high region can be saved by 25%. The inflow of the primary water inlet pipeline 101 is reduced, and for municipal administration, hot water required to be heated is reduced, so that coal mine resources and water resource consumption are greatly saved, and the environment is protected. For the individual user, the flow of municipal delivery is reduced, the heating cost required to be paid by the user is reduced, and the economic pressure is greatly reduced.
Example 4
The system is applied to a certain district in Wuji county, Yanan city, the PLC control system, the constant-pressure coupling temperature control purification unit 3, the variable-frequency pump set and the first variable-frequency pump 202 (generally the existing municipal lift pump) in the system are directly added into the existing heating pipe network system, and corresponding temperature sensors, pressure sensors and flow sensors are installed at corresponding monitoring points.
The district adopts the heat source of the power plant to supply heat in a centralized way. The heating area of a residential area is 69000 square meters, the area of the residential area is 1-14 layers, the area is 37000 square meters, the area is 15-26 layers, and the area is 32000 square meters. The municipal coal-fired boiler is adopted for centralized heat supply, the on-site heat supply temperature is 60 ℃, the pressure is 0.65Mpa, the heating system is originally plate type heat exchange equipment for heat exchange and heating, the system is arranged on a heating pipe network, and the obtained comparison parameters are shown in tables 3 and 4:
TABLE 3 heating temperature and flow rate for a certain district in Yanan City
TABLE 4 temperature and flow rate for heating in high district of Yanan city
It can be seen from tables 3 and 4 that the water inlet flow of the primary water inlet pipeline 101 (i.e., municipal water supply) can be greatly reduced by using the system of the present invention under the condition that the water inlet with the same temperature is adopted and the indoor temperature can be maintained, the water inlet flow can be saved by 23% in the low region and 25% in the high region. The inflow of the primary water inlet pipeline 101 is reduced, and for municipal administration, hot water required to be heated is reduced, so that coal mine resources and water resource consumption are greatly saved, and the environment is protected. For the individual user, the flow of municipal delivery is reduced, the heating cost required to be paid by the user is reduced, and the economic pressure is greatly reduced.
Example 5
The system is applied to a certain cell in Weinan Korea, a PLC control system, a constant-pressure coupling temperature control purification unit 3, a variable-frequency pump set and a first variable-frequency pump 202 (generally an existing municipal lift pump) in the system are directly added into the existing heating pipe network system, and corresponding temperature sensors, pressure sensors and flow sensors are installed at corresponding monitoring points.
The district adopts the heat source of the power plant to supply heat in a centralized way. The heating area of the small area is 128000 square meters, the area is 1-12 layers, the area is 64000 square meters, the area is 13-26 layers, the area is 64000 square meters. The municipal coal-fired boiler is adopted for centralized heat supply, the on-site heat supply temperature is 90 ℃, the pressure is 0.75Mpa, the heating system is originally plate type heat exchange equipment for heat exchange and heating, the system is arranged on a heating pipe network, and the obtained comparison parameters are shown in tables 5 and 6:
TABLE 5 heating temperature and flow rate for a low zone in Weinan Korea
TABLE 6 heating temperature and flow rate for high area in Weinan Korea
It can be seen from tables 5 and 6 that the water inlet flow of the primary water inlet pipeline 101 (i.e., municipal water supply) can be greatly reduced by using the system of the present invention under the condition that the water inlet with the same temperature is adopted and the indoor temperature can be maintained, and the water inlet flow of the low region and the high region can be saved by 24% respectively. The inflow of the primary water inlet pipeline 101 is reduced, and for municipal administration, hot water required to be heated is reduced, so that coal mine resources and water resource consumption are greatly saved, and the environment is protected. For the individual user, the flow of municipal delivery is reduced, the heating cost required to be paid by the user is reduced, and the economic pressure is greatly reduced.
Example 6
The system is applied to a certain district of river body in Shanxi province, a PLC control system, a constant-pressure coupling temperature control purification unit 3, a variable-frequency pump set and a first variable-frequency pump 202 (generally an existing municipal lift pump) in the system are directly added into an existing heating pipe network system, and corresponding temperature sensors, pressure sensors and flow sensors are installed at corresponding monitoring points.
The district adopts the heat source of the power plant to supply heat in a centralized way. The heating area of the small area is 68000 square meters, the area of the low area is 1-9 layers, the area is 34000 square meters, the area is 10-18 layers, and the area is 34000 square meters. Adopts a municipal coal-fired boiler to supply heat in a centralized way, the temperature of the on-site heat supply is 60 ℃, and the water outlet flow is 50m3The heating system is originally one-shot geothermal deep well hot water heating, the system is arranged on a heating pipe network, and the obtained comparison parameters are shown in tables 7 and 8:
TABLE 7 heating temperature and flow rate in the lower area of certain zone of river fluid of Shanxi province
TABLE 8 heating temperature and flow in a certain district of river and body of Shanxi province
It can be seen from tables 7 and 8 that the water inlet flow of the primary water inlet pipeline 101 (i.e., municipal water supply) can be greatly reduced by using the system of the present invention, the low zone can be saved by 41%, and the high zone can be saved by 46% under the condition that the water inlet with the same temperature is adopted and the indoor temperature can be maintained. The inflow of the primary water inlet pipeline 101 is reduced, and for municipal administration, hot water required to be heated is reduced, so that coal mine resources and water resource consumption are greatly saved, and the environment is protected. For the individual user, the flow of municipal delivery is reduced, the heating cost required to be paid by the user is reduced, and the economic pressure is greatly reduced.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Finally, it should be noted that: the embodiment of the present invention is disclosed only as a preferred embodiment of the present invention, which is only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides an energy-conserving muddy water heating system which characterized in that: the system comprises a control system, and a heat source supply unit, a temperature and pressure regulating unit, a constant-pressure coupling temperature control and purification unit, a climate compensation and regulation unit and a heating terminal which are sequentially connected according to the water flow direction;
the heat source supply unit is used for heating water and then conveying the heated water to a heating terminal, the heat source supply unit comprises a boiler and a conveying pipe network, and the conveying pipe network comprises a primary water inlet pipeline, a secondary water inlet pipeline, a primary water return pipeline and a secondary water return pipeline;
the temperature and pressure regulating unit comprises a first dirt removing device, a first variable frequency pump, an electric regulating valve and an opening and closing valve, and the first dirt removing device and the first variable frequency pump are sequentially arranged on the primary water inlet pipeline according to the water flow direction; the electric regulating valve and the opening and closing valve are sequentially arranged on the primary water return pipeline according to the water flow direction;
the constant-pressure coupling temperature control purification unit is used for mixing hot water in the primary water inlet pipeline and return water in the secondary water return pipeline and serving as secondary water supply to enter a user heating terminal from the secondary water inlet pipeline;
the climate compensation adjusting unit comprises a variable frequency pump set, and the flow of secondary water supply is adjusted by the power of the variable frequency pump set to supplement the heat energy lost in the conveying pipe network;
the control system comprises a data acquisition module and a PLC control system in electrical signal connection with the data acquisition module, wherein the data acquisition module comprises a plurality of temperature sensors, flow sensors and pressure sensors, the temperature sensors are at least arranged at a primary hot water outlet of the boiler, a secondary water inlet pipeline close to a constant-pressure coupling temperature-control purification unit, the constant-pressure coupling temperature-control purification unit close to the constant-pressure coupling temperature-control purification unit and a primary water inlet pipeline between the opening and closing valve and the electric regulating valve; and the PLC control system is electrically connected with the first variable frequency pump, the variable frequency pump set and the electric regulating valve respectively.
2. The energy-saving mixed water heating system according to claim 1, characterized in that: the constant-pressure coupling temperature control purification unit comprises a water mixing area and a filtering area, the water mixing area comprises a primary hot water inlet and a secondary hot water outlet, the filtering area comprises a secondary return water inlet and a return water outlet, the primary hot water inlet is connected with a first variable frequency pump through a primary water inlet pipeline, and the secondary hot water outlet is connected with a variable frequency pump set through a secondary water inlet pipeline.
3. The energy-saving mixed water heating system according to claim 2, characterized in that: and a water mixing guide pipe is arranged between the water mixing area and the filtering area, and the water mixing guide pipe guides the return water in the filtering area into the mixing area and mixes the return water with the sequential primary hot water in the mixing area.
4. The energy-saving mixed water heating system according to claim 3, characterized in that: a filter screen is arranged in the filtering area, and the backwater filtered by the filter screen is guided into the mixing area by the water mixing conduit.
5. The energy-saving mixed water heating system according to claim 1, characterized in that: the variable-frequency pump set in the climate compensation adjusting unit comprises a main variable-frequency pump and at least one auxiliary variable-frequency pump.
6. The energy-saving mixed water heating system according to claim 1, characterized in that: and a second decontamination device is arranged on the secondary water return pipeline.
7. The energy-saving mixed water heating system according to claim 6, characterized in that: the pressure sensor is arranged at a primary hot water outlet of the boiler, at a position close to a heating terminal of the secondary water inlet pipeline, at a position close to the constant-pressure coupling temperature-control purification unit of the primary water return pipeline, at a position close to the constant-pressure coupling temperature-control purification unit of the secondary water return pipeline and on the constant-pressure coupling temperature-control purification unit;
the first decontamination device and the second decontamination device are respectively provided with a pressure difference detection device, and the pressure difference detection devices are electrically connected with the data acquisition module.
8. A heating control method of the heating system according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
(1) the boiler in the heat source supply unit heats water to 90-95 ℃, hot water flows out of a primary hot water outlet of the boiler and enters a heating terminal through the first decontamination device, the first variable frequency pump, the constant-pressure coupling temperature control purification unit and the variable frequency pump set in sequence, and the hot water used by the heating terminal is recycled to a municipal pipe network through the second decontamination device, the constant-pressure coupling temperature control purification unit and the electric regulating valve in sequence;
(2) monitoring the primary inlet water temperature, the primary inlet water pressure and the primary inlet water flow at the primary hot water outlet of the boiler, and transmitting data to a data acquisition module; the water mixing temperature is detected between the constant-pressure coupling temperature control purification unit and the variable-frequency pump set, and data are transmitted to the data acquisition module; monitoring the secondary return water temperature between the heating terminal and the constant-pressure coupling temperature control purification unit, and sending detection data to a data acquisition module; detecting the primary return water temperature, the primary return water flow and the primary return water pressure in the primary return water pipeline and transmitting data to a data acquisition module;
(3) the PLC control system is provided with a temperature set value and a pressure set value, and the temperature set value changes according to external weather; the data acquisition module transmits the temperature, flow and pressure acquired by each point to a PLC control system for storage; comparing that the secondary return water temperature is inconsistent with the set temperature, and enabling the secondary return water temperature to meet the requirement by adjusting the power of the variable frequency pump set, the electric flow valve and the first variable frequency pump by the PLC control system;
the contrast is once intake pressure and a return water pressure contrast, and PLC control system carries out pressure control through the adjustment to electric flow valve, makes the system reach the constant voltage.
9. The heating control method of the heating system according to claim 8, characterized in that: in the step (3), when the secondary return water temperature is lower than a set value, the PLC control system controls and increases the power of the variable frequency pump set, and/or increases the power of the first variable frequency pump, and/or increases the flow of the electric flow valve, increases the secondary return water inlet flow, and the return water temperature and the mixed water temperature reach dynamic balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111244936.5A CN114017827A (en) | 2021-10-26 | 2021-10-26 | Energy-saving water mixing heating system and heating control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111244936.5A CN114017827A (en) | 2021-10-26 | 2021-10-26 | Energy-saving water mixing heating system and heating control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114017827A true CN114017827A (en) | 2022-02-08 |
Family
ID=80057471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111244936.5A Pending CN114017827A (en) | 2021-10-26 | 2021-10-26 | Energy-saving water mixing heating system and heating control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114017827A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200955803Y (en) * | 2006-05-17 | 2007-10-03 | 赵永民 | Ground heating air conditioning automatic temperature-control water-mixing equipment |
| CN101344274A (en) * | 2008-08-25 | 2009-01-14 | 北京硕人时代科技有限公司 | Boiler heat supplying climate compensating system and its implementing method |
| CN102278784A (en) * | 2011-05-13 | 2011-12-14 | 新疆西部热力集团有限公司 | Distributed direct-mixing heat supply system |
| CN212841784U (en) * | 2020-07-06 | 2021-03-30 | 黑龙江省中能控制工程股份有限公司 | Geothermal water-mixing heat exchange unit and heat exchange system |
-
2021
- 2021-10-26 CN CN202111244936.5A patent/CN114017827A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200955803Y (en) * | 2006-05-17 | 2007-10-03 | 赵永民 | Ground heating air conditioning automatic temperature-control water-mixing equipment |
| CN101344274A (en) * | 2008-08-25 | 2009-01-14 | 北京硕人时代科技有限公司 | Boiler heat supplying climate compensating system and its implementing method |
| CN102278784A (en) * | 2011-05-13 | 2011-12-14 | 新疆西部热力集团有限公司 | Distributed direct-mixing heat supply system |
| CN212841784U (en) * | 2020-07-06 | 2021-03-30 | 黑龙江省中能控制工程股份有限公司 | Geothermal water-mixing heat exchange unit and heat exchange system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104654449B (en) | Distributed electric heat energy storage heating control system and method | |
| CN205579706U (en) | Collection dress formula intelligence heat exchange station | |
| AU2016275938A1 (en) | Hot water heating device having solar energy and off-peak electric heating energy storage and application | |
| CN104390260B (en) | A kind of biomass heating steam generator system | |
| CN107726426A (en) | Double thermal source complementary heating systems and its implementation | |
| CN104930576A (en) | Highly-stable anticorrosion complete set heat supply system | |
| CN202598911U (en) | Temperature automatic control system of solar heating petroleum storage tank | |
| CN110428302A (en) | A kind of area distribution formula hot water shared system and control method | |
| CN109268922A (en) | Direct-expansion type heat pump adds photovoltaic power generation coupling to utilize heating system | |
| CN204943628U (en) | High steady anticorrosion complete heating system | |
| CN211823394U (en) | Bypass regulation type industrial cooling water circulation system | |
| CN114017827A (en) | Energy-saving water mixing heating system and heating control method | |
| CN115773523A (en) | Energy-saving water mixing heating system and heating control method | |
| CN207196598U (en) | A kind of inexpensive Electromagnetic Heating heating plant | |
| CN104456972A (en) | Small memory-based intelligent heat supply boiler system | |
| CN209782784U (en) | geothermal and hanging piece mixed heat supply type adjusting system | |
| CN211316605U (en) | Intelligent control system based on multiple hot water energy preparation modes | |
| CN210070722U (en) | Automatic adjusting heat exchange unit of variable frequency water pump | |
| CN208108489U (en) | A kind of high efficiency boiler energy-saving control system | |
| CN111777202A (en) | Energy-saving domestic sewage treatment temperature regulating system and regulating and controlling process thereof | |
| CN107327892B (en) | Solar energy photo-thermal heat collection heat supply pipeline | |
| CN205119218U (en) | Two outer modes of central heating and bathroom double -purpose divide family controlling means | |
| CN204554993U (en) | A kind of central heating household control device of singly transfering to other localities | |
| CN105444243A (en) | Waste heat recovery heat supply and water charging system and water charging method | |
| CN204285830U (en) | A kind of memory-type intelligent small heating boiler system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220208 |