CN108758778B - Multi-energy complementary mine area heat supply system - Google Patents
Multi-energy complementary mine area heat supply system Download PDFInfo
- Publication number
- CN108758778B CN108758778B CN201810571987.0A CN201810571987A CN108758778B CN 108758778 B CN108758778 B CN 108758778B CN 201810571987 A CN201810571987 A CN 201810571987A CN 108758778 B CN108758778 B CN 108758778B
- Authority
- CN
- China
- Prior art keywords
- heat
- water
- low
- heat exchanger
- alcohol
- 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.)
- Active
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
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat 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
-
- 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
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
A multi-energy complementary mine heating system, comprising: the low-heat waste water supply device collects low-heat waste water containing bathing waste water and mine water and outputs the low-heat waste water to the outside. The first heat application unit comprises a first heat pump set and a tap water source, and the low-heat-energy wastewater is respectively connected to the evaporator ends of the heat pumps of the first heat pump set through branches. Tap water sequentially passes through the heat exchanger ends of the heat pumps of the first heat pump group, and the tap water is heated to a preset temperature in multiple stages. And the second heat application unit comprises a water-alcohol heat exchanger and an alcohol-air heat exchanger, the low-heat-energy waste water supplies the low-heat-energy waste water to the water-alcohol heat exchanger, the alcohol in the water-alcohol heat exchanger absorbs the heat of the low-heat-energy waste water to be changed into hot alcohol, the hot alcohol heats the air through the alcohol-air heat exchanger, and the heated air is used for preventing the wellhead of the mine from freezing. The energy used by the invention is low-grade energy, the energy consumption is low, the heat production is large, the zero emission of hot water is realized, the system is simple, the operation efficiency is high, and the system is suitable for being popularized and utilized in northern coal mine areas.
Description
Technical Field
The invention belongs to mining engineering and energy engineering, in particular to a multi-energy complementary mine heating system which effectively integrates, distributes and utilizes various energy sources.
Background
In recent years, the haze phenomenon in China is more serious, especially in Beijing, Shenyang, Tianjin and the like, and the topic of 'energy and environmental protection' has become a hot spot concerned by the people in China. Under the condition that the environmental quality is continuously deteriorated, the problem of carbon emission and the like should be solved in order to protect the environment on the premise of ensuring economic development. Northern coal mine areas require large amounts of heat for bathing, heating and wellhead freeze protection in winter. The number of workers in coal mine areas is large, and a large amount of waste water with a small amount of heat is generated by bathing. In addition, the water inflow of mines in mining areas is large and higher than the outdoor ground temperature in winter (the outdoor temperature in northern winter is about-10 ℃).
The bath wastewater and mine well water both belong to low-level energy source hot water and are relatively large in amount, if the bath wastewater and the mine well water are directly discarded, the waste is very high, the requirements on energy conservation and environmental protection are not met, the required amount of the heat energy in a mine area is relatively large, and the method for wasting the heat energy is contradictory to the requirement of the heat energy; if the low-level energy source hot water is utilized, a plurality of problems exist, and the most prominent problem is that the temperature of the bathing wastewater and the mine water burst is too low to be directly utilized; secondly, the cleanliness is not enough and is not suitable for direct utilization.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to design a multi-energy complementary mine area heating system aiming at northern coal mine areas, so that various low-level energy sources such as mine water burst, bathing wastewater and the like of the mine area are utilized to the maximum extent, the heat energy requirements of heating, bathing and mine freeze prevention in the northern coal mine areas are met, the economic and energy-saving effects are achieved as far as possible, and the normal operation of the northern mine areas in winter is ensured.
In order to achieve the purpose, the invention adopts the main technical scheme that:
a multi-energy complementary mine heating system, comprising:
the low-heat waste water supply device collects low-heat waste water containing bathing waste water and mine water and outputs the low-heat waste water outwards through a low-heat waste water pipe, and the low-heat waste water pipe comprises a first low-heat waste water pipe and a second low-heat waste water pipe;
the first heat application unit comprises a first heat pump set and a tap water source, and each heat pump of the first heat pump set comprises an evaporator end and a heat exchanger end; the water of the first low-heat energy wastewater pipe is respectively connected to the evaporator end of each heat pump of the first heat pump set through a branch; tap water supplied by the tap water source sequentially passes through the heat exchanger ends of the heat pumps of the first heat pump group, so that the tap water is heated to a preset temperature in multiple stages;
and the second heat application unit comprises a water-alcohol heat exchanger and an alcohol-air heat exchanger, the low-heat energy waste water supply device supplies low-heat energy waste water to the water-alcohol heat exchanger through a second low-heat energy waste water pipe, alcohol in the water-alcohol heat exchanger absorbs heat of the low-heat energy waste water to be changed into hot alcohol, the hot alcohol heats air through the alcohol-air heat exchanger, and the heated air is used for preventing freezing of a wellhead of the mine.
The alcohol is liquid alcohol at normal temperature, such as ethanol, methanol and the like, the freezing point of the alcohol is far lower than that of water (0 ℃), and the phenomenon that water in a heat exchanger is frozen to influence normal work when low-heat-energy waste water directly exchanges heat with cold air with extremely low temperature can be avoided.
According to one embodiment of the invention, the system further comprises a third heat application unit, wherein the third heat application unit comprises a second heat pump group and a heating water return pipe, and the heating water return pipe supplies heating water return; each heat pump of the second heat pump set comprises an evaporator end and a heat exchanger end; the low-heat-energy wastewater from the water-alcohol heat exchanger is respectively connected to the evaporator ends of the heat pumps of the second heat pump group through branches; the heat exchanger ends of the heat pumps of the second heat pump group are connected with the heating return water pipe in series, and the heating return water sequentially passes through the heat exchanger ends of the heat pumps of the second heat pump group, so that the heating return water is heated to a preset temperature in multiple stages.
According to an embodiment of the present invention, the low-heat wastewater further includes a third low-heat wastewater, the system further includes a third heat application unit including a second heat pump group and a heating water return pipe supplying heating water; each heat pump of the second heat pump set comprises an evaporator end and a heat exchanger end; the low-heat energy wastewater of the third low-heat energy wastewater pipe is respectively connected to the evaporator ends of the heat pumps of the second heat pump group by branches; the heat exchanger ends of the heat pumps of the second heat pump group are connected with the heating return water pipe in series, and the heating return water sequentially passes through the heat exchanger ends of the heat pumps of the second heat pump group, so that the heating return water is heated to a preset temperature in multiple stages.
According to an embodiment of the invention, the first heat application unit further comprises a water-water heat exchanger, one end of the water-water heat exchanger is connected to the tap water source, and the other end of the water-water heat exchanger is connected to the first low thermal energy waste pipe, so that tap water supplied by the tap water source is preheated through the water-water heat exchanger and then sequentially flows through the heat pumps of the first heat pump group.
According to an embodiment of the present invention, the third heat application unit further includes a water-water heat exchanger connected to the heating water return pipe at one end and the third low thermal waste water pipe at the other end, such that the water of the heating water recovery pipe is preheated through the water-water heat exchanger and then sequentially flows through the heat pumps of the second heat pump group.
According to an embodiment of the invention, the first heat pump group of the first heat application unit comprises more than 2 heat pumps.
According to an embodiment of the invention, the second heat pump group of the third heat application unit comprises more than 2 heat pumps.
According to one embodiment of the invention, the first heat application unit comprises 1 water-water heat exchanger and 3 heat pumps, the low thermal energy waste water of the first low thermal energy waste water pipe firstly flows through the water-water heat exchanger to preheat tap water entering the water-water heat exchanger, and the low thermal energy waste water coming out of the water-water heat exchanger is respectively connected with the evaporator ends of the 3 heat pumps in a branch way; the preheated tap water sequentially passes through the heat exchange ends of the 3 heat pumps; the heat of the low-heat-energy wastewater flowing through the water-water heat exchanger is extracted by the 3 heat pumps respectively, and the tap water is heated to a preset temperature for multiple times.
According to an embodiment of the present invention, the third heat application unit comprises 1 water-water heat exchanger and 3 heat pumps, the low thermal energy wastewater from the water-alcohol heat exchanger first flows through the water-water heat exchanger to preheat the heating return water entering the water-water heat exchanger, and the low thermal energy wastewater from the water-water heat exchanger is connected to the evaporator ends of the 3 heat pumps by a branch; the preheated heating backwater sequentially passes through the heat exchange ends of the 3 heat pumps; the heat of the low-heat-energy wastewater flowing through the water-water heat exchanger is extracted by the 3 heat pumps respectively, and the heating return water is heated to a preset temperature for multiple times.
According to one embodiment of the invention, the third heat application unit further comprises a water-air heat exchanger, the heating return water processed by each heat pump of the second heat pump set enters the water-air heat exchanger to heat air flowing through the water-air heat exchanger, and the heated air is used for well head freeze protection of a mine.
According to an embodiment of the invention, the first heat application unit further comprises a first data processing module and a plurality of meters, wherein the meters comprise a flow meter, a pressure meter and a thermometer, and are used for monitoring flow, pressure and temperature data of tap water and low-heat-energy wastewater before and after entering and exiting each heat exchanger and before and after entering and exiting each heat pump, and reporting the data to the control system.
According to an embodiment of the present invention, the second heat application unit further comprises a second data processing module and a plurality of meters, wherein the meters comprise a flow meter, a pressure meter and a thermometer, and are used for monitoring flow, pressure and temperature data of the low-heat-energy wastewater before and after entering and exiting the water-alcohol heat exchanger, before and after the alcohol enters and exits the alcohol-air heat exchanger, and before and after the air enters and exits the alcohol-air heat exchanger, and reporting the flow, pressure and temperature data to the control system.
According to an embodiment of the invention, the second heat application unit further comprises a third data processing module and a plurality of meters, wherein the meters comprise a flowmeter, a pressure meter and a thermometer, and are used for monitoring flow, pressure and temperature data of the heating return water and the low-heat-energy wastewater before and after entering and exiting the heat exchanger, before and after entering and exiting each heat pump and before and after the heating return water provides heating for residents, and reporting the flow, pressure and temperature data to the control system.
The control system coordinates the flow distribution of the first, second and third low-heat energy waste water pipes according to the monitored flow, pressure and temperature data, adjusts the motor/motor power of each heat pump and heat exchanger, achieves the effect of adjusting the temperature and ensures the ordered operation of the whole set of heat supply system.
A multi-energy complementary mine heating system, comprising:
the low-heat energy waste water supply device is used for collecting low-heat energy waste water including bathing waste water and mine water and outputting the low-heat energy waste water outwards through a low-heat energy waste water pipe, and the low-heat energy waste water pipe comprises a first low-heat energy waste water pipe and a second low-heat energy waste water pipe;
the first heat application unit comprises a first water-water heat exchanger, a first heat pump set and a tap water source, wherein the first heat pump set comprises 3 heat pumps, and each heat pump comprises an evaporator end and a heat exchanger end; the first low-heat energy waste water pipe and a tap water source are both communicated with the first water-water heat exchanger, and the tap water is preheated by the low-heat energy waste water through the first water-water heat exchanger; the low-heat-energy wastewater from the first water-water heat exchanger is respectively connected with the evaporator ends of the 3 heat pumps by branches, and the preheated tap water sequentially flows through the heat exchange ends of the 3 heat pumps, so that the preheated tap water is cumulatively heated to a preset temperature by the 3 heat pumps;
the second heat application unit comprises a water-alcohol heat exchanger and an alcohol-air heat exchanger, the low-heat energy waste water supply device supplies low-heat energy waste water to the water-alcohol heat exchanger through a second low-heat energy waste water pipe, alcohol in the water-alcohol heat exchanger absorbs heat of the low-heat energy waste water to be changed into hot alcohol, the hot alcohol heats air through the alcohol-air heat exchanger, and the heated air is used for preventing freezing of a wellhead of a mine;
the third heat application unit comprises a second water-water heat exchanger, a second heat pump group and a heating water return pipe, wherein the heating water return pipe supplies heating water, the second heat pump group comprises 3 heat pumps, and each heat pump comprises an evaporator end and a heat exchanger end; inputting the low-heat-energy wastewater and the heating return water from the water-alcohol heat exchanger into the second water-water heat exchanger, and preheating the heating return water by using the low-heat-energy wastewater; the low-heat-energy wastewater from the second water-water heat exchanger is respectively connected with the evaporator ends of the 3 heat pumps by branches, and the preheated heating backwater sequentially flows through the heat exchange ends of the 3 heat pumps, so that the preheated heating backwater is cumulatively heated to a preset temperature by the 3 heat pumps.
According to a preferred embodiment of the present invention, the third heat application unit further comprises a water-air heat exchanger, the water-air heat exchanger heats air entering the water-air heat exchanger by using return heating water from the 3 heat pumps of the third heat application unit, and the heated air is used for well head freeze protection of a mine.
The invention has the beneficial effects that:
(1) in the scheme of the invention, the low-heat energy wastewater is respectively connected with the evaporator ends of a plurality of heat pumps by branches, and the running water/heating return water to be heated is connected with the plurality of heat pumps in series, so that the running water/heating return water to be heated sequentially flows through each heat pump, the temperature of the running water/heating return water is increased to the maximum extent, the working efficiency of each heat pump is improved to the maximum extent, low-grade energy hot water is graded and reused for multiple times, the temperature of the running water/heating return water is increased in multiple stages, and energy is saved.
(2) When the air temperature in the north is considered to be very low (about-15 ℃ to 0 ℃) during mine freeze prevention, in the second heat application unit, if air is directly used for heat exchange with low-heat-energy wastewater output by the second low-heat-energy wastewater, the low-heat-energy wastewater is likely to freeze, and therefore the normal work of the heat exchanger is ensured by arranging a water-alcohol heat exchanger and an alcohol-air heat exchanger and adopting alcohol with the melting point far lower than that of water as a heat transfer medium.
(3) The invention further utilizes the low-heat energy waste water from the water-alcohol heat exchanger, and the low-heat energy waste water is matched with the second water-water heat exchanger and a plurality of heat pumps to heat and raise the temperature of heating return water for heating users, thereby utilizing the energy of the waste water to the maximum extent.
(4) When more heat is needed for the well mouth anti-freezing of the mine, the heated heating return water can be used for heating air, and the heated air is used for the well mouth anti-freezing of the mine.
The invention also sets a plurality of instruments, including flow meters, thermometers, pressure gauges, etc., which are used for monitoring the temperature, flow and pressure data before and after the working medium and the heated fluid enter and exit each heat pump and each heat exchanger, the control system uniformly adjusts, arranges and distributes the input flow and distribution proportion of each pipeline and the working power of each heat pump and heat exchanger power part according to the monitoring result, achieves the purpose of adjusting the temperature of each node, makes the output hot water or hot air meet the requirements of specific purposes, and ensures the ordered operation of the whole set of heat supply system. Meanwhile, the energy sources used by the invention are low-grade energy sources, the energy consumption is low, the heat production quantity is large, zero emission is almost realized, the energy-saving and emission-reducing requirements advocated at present are met, the operation cost is low, the system is simple, the operation efficiency is high, and the method is suitable for being popularized and utilized in northern coal mine areas.
Drawings
Fig. 1 is a schematic view of the fluid direction and the working principle of the multi-energy complementary mine heating system in embodiment 1 of the invention.
Fig. 2 is a schematic diagram of the working principle and the composition structure of the heat pump.
Fig. 3 is a schematic view of the fluid direction and the working principle of the multi-energy complementary mine heating system in embodiment 2 of the invention.
[ description of reference ]
The system comprises a low-heat energy wastewater supply device 1, a first heat application unit 20, a first water-water heat exchanger 2, a first heat pump group 3 (comprising heat pumps 3a, 3b and 3c), a water storage tank 6, water output by a first low-heat energy wastewater pipe 11, water output by a second low-heat energy wastewater pipe 12, a second heat application unit 70, a water-alcohol heat exchanger 7, an alcohol-air heat exchanger 8, a third heat application unit 90, a second water-water heat exchanger 9, a second heat pump group 10 (comprising heat pumps 10a, 10b and 10c), a water-air heat exchanger 13, a flow meter 14, a pressure meter 15, a thermometer 16, heating return water supplied by a heating return water pipe 17, an evaporator end of a heat pump 31, a heat exchanger end of a heat pump 34, a compressor 32 and an expansion valve 33.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
Example 1
Fig. 1 is a schematic view showing the fluid flow direction and the working principle of the multi-energy complementary mine heating system according to the preferred embodiment 1 of the present invention.
As shown in fig. 1, the system includes:
the low-heat waste water supply device 1 collects low-heat waste water including bathing waste water and mine water and outputs the heat waste water to the outside through a first and a second low-heat waste water pipes, referring to water output by the heat waste water pipes indicated by reference numerals 11 and 12 in the figure.
The first heat application unit 20 comprises a first water-water heat exchanger 2, a first heat pump set 3 comprising three heat pumps, i.e. a heat pump 3a, a heat pump 3b, a heat pump 3c, and a tap water source, each heat pump 3a, 3b, 3c comprising an evaporator end 31 and a heat exchanger end 34. The heat energy wastewater 11 output by the first low heat energy wastewater pipe is communicated with a tap water source through the first water-water heat exchanger 2, and the tap water is preheated to about 20 ℃ by the low heat energy wastewater 11 through the first water-water heat exchanger 2. The low-heat-energy waste water from the first water-water heat exchanger 2 is respectively connected with the evaporator ends 31 of the three heat pumps 3a, 3b and 3c by branches, namely the evaporator ends 31 of the three heat pumps 3a, 3b and 3c are connected in parallel, respectively absorb heat from the low-heat-energy waste water 11, and the low-heat-energy waste water 11 used by the heat pumps 3a, 3b and 3c is collected to a sewer pipe to be discharged. The tap water preheated to 20 ℃ sequentially flows through the heat exchange ends 34 of the three heat pumps 3a, 3b, 3c, so that the tap water is heated to 44 ℃ in multiple stages by the three heat pumps 3a, 3b, 3 c. Specifically, when tap water preheated to 20 ℃ is treated by the heat pump 3a, the temperature is increased to 28 ℃; then the temperature is increased to about 36 ℃ after the treatment by the heat pump 3 b; finally, after being treated by the heat pump 3c, the temperature is raised to 44 ℃, and the tap water with the temperature of 44 ℃ is collected into the water storage tank 6 for the householder to bath.
The working principle of the heat pump can be seen in fig. 2. The heat pump comprises an evaporator end 31, a compressor, a heat exchanger end 34, a compressor 32, an expansion valve 33. The evaporator end 31 comprises an evaporator, a low-temperature low-pressure heat transfer working medium is arranged in the evaporator, the evaporator end 31 further comprises a cavity or a pipeline through which the low-heat energy wastewater 11 flows and performs heat transfer with the heat transfer working medium in the evaporator, when the low-heat energy wastewater 11 enters the cavity or the pipeline, heat is transferred to the heat transfer working medium, the heat transfer working medium absorbs heat and is heated to become low-pressure steam, the low-pressure steam is compressed into high-pressure high-temperature gas through a compressor 32, and the high-pressure high-temperature gas enters the heat exchanger end 34. The heat exchanger 34 includes a condenser, and the high temperature and high pressure gas enters the condenser, and a cavity or pipe is provided around the condenser for running water to flow through and to transfer heat with the high pressure and high temperature vapor in the condenser, and the running water enters the cavity or pipe to absorb the heat energy of the high temperature and high pressure vapor in the condenser, and the running water is heated. Meanwhile, the steam of the heat transfer working medium is condensed into high-pressure liquid due to heat release, the high-pressure liquid becomes low-temperature and low-pressure liquid after passing through an expansion valve, and the low-temperature and low-pressure liquid enters the evaporator end 31 again to absorb the heat of the low-heat-energy wastewater 11, so that circulation is performed. In this process, the heat of the low thermal energy waste water 11 is transferred to the tap water with higher temperature, so that the tap water is heated to the temperature required for use. The tap water is heated up for 4 times by the first water-water heat exchanger 2 and the second heat pump group 3 in sequence.
The second heat application unit 70 comprises a water-alcohol heat exchanger 7 and an alcohol-air heat exchanger 8, the second low-heat energy waste water pipe outputs low-heat energy waste water 12 to enter the water-alcohol heat exchanger 7, alcohol flowing through the water-alcohol heat exchanger 7 absorbs heat of the low-heat energy waste water 12 and then is heated, the heated alcohol enters the alcohol-air heat exchanger 8, low-temperature air sucked by the alcohol-air heat exchanger 8 from the outside absorbs heat of high-temperature alcohol, the air temperature is increased from zero to more than 2 ℃, and the air is output to a wellhead of a mine to prevent the wellhead from freezing.
The third heat application unit 90 includes a second water-water heat exchanger 9, a second heat pump group 10, and a heating return pipe, and the heating return pipe supplies heating return water 17. The second heat pump group 10 comprises three heat pumps, i.e. a heat pump 10a, a heat pump 10b, a heat pump 10c, each heat pump 10a, 10b, 10c comprising an evaporator end and a heat exchanger end (see fig. 2 and the above description of the principles). The low-heat-energy wastewater 12 and the heating return water 17 from the water-alcohol heat exchanger 7 are both first fed into the second water-water heat exchanger 9, and the heating return water 17 is preheated by the low-heat-energy wastewater 12. The low-heat-energy waste water 12 from the second water-water heat exchanger 9 is connected with the evaporator ends of the three heat pumps 10a, 10b and 10c by branches, that is, the evaporator ends of the three heat pumps 10a, 10b and 10c are connected in parallel, each of the three heat pumps respectively absorbs heat from the low-heat-energy waste water 12, and the low-heat-energy waste water 12 used by the heat pumps 10a, 10b and 10c is collected to a sewer pipe and discharged. The preheated heating backwater 17 sequentially flows through the heat exchange ends of the three heat pumps 10a, 10b and 10c, so that the heating backwater 17 is heated to about 50 ℃ in multiple stages by the three heat pumps 10a, 10b and 10c, and indoor heating of residents is achieved. Specifically, the heating return water 17 is heated by the second water-water heat exchanger 9 and the second heat pump group 10 in sequence for 4 times in total.
As shown in fig. 1, when the air temperature in northern mines is too low at night, the heat demand that may be used for wellhead freeze protection increases. At the moment, the heated heating backwater 17 can be utilized to exchange heat with air, and air with a higher temperature is output for well mouth anti-freezing. As shown in fig. 1, a water-air heat exchanger 13 is connected in parallel to a pipeline of the heating return water 17 processed by the second heat pump group 10, and heated air is used for wellhead freeze prevention.
As shown in fig. 1, the first heat application unit 20, the second heat application unit 70, and the third heat application unit 90 respectively include a first data processing module, a second data processing module, a third data processing module, and a plurality of meters, where the meters include a flow meter 14, a pressure gauge 15, and a temperature gauge 16, and are configured to monitor data such as flow, pressure, and temperature of tap water, return water 17 of heating, low-heat- energy wastewater 11, 12 before and after entering and exiting each heat exchanger, before and after entering and exiting each heat pump, and before and after air enters the heat exchanger, and report the data to the control system. The control system coordinately distributes the flow distribution of the first and second low-heat-energy waste water pipes according to the monitored flow, pressure and temperature data, and adjusts the motor/motor power of each heat pump and heat exchanger so as to achieve the effect of adjusting the temperature, meet the use requirements of bathing, heating, freezing prevention and the like, and ensure the ordered operation of the whole set of heat supply system.
Example 2
Referring to fig. 3, embodiment 2 differs from embodiment 1 in that the first and second water-water heat exchangers 7 and 9 are changed to be in parallel relationship with the thermal energy waste water 11 output from the first and second low thermal energy waste waters 12, respectively. In other words, the thermal waste water 11 is connected to the first water-water heat exchanger 7 by one branch and the thermal waste water 12 is connected to the second water-water heat exchanger 9 by one branch. Therefore, when the heat energy wastewater 11 output by the first low-heat energy wastewater pipe and the heat energy wastewater 12 output by the second low-heat energy wastewater pipe enter the first heat pump group 3 and the second heat pump group 10, the temperature difference between the heat energy wastewater and the low-temperature low-pressure heat transfer working medium at the evaporator end of the heat pump is as large as possible, so that the heat transfer efficiency between the heat energy wastewater and the heat transfer working medium is improved, and the working efficiency of the heat pump is improved.
Example 3
Embodiment 3 differs from embodiment 1 only in that the first water-water heat exchanger 7 and the second water-water heat exchanger 9 are replaced by heat pumps, and likewise in a parallel relationship with the thermal energy waste water 11 output by the first low thermal energy waste water pipe and the thermal energy waste water 12 output by the second low thermal energy waste water pipe, respectively, i.e. the thermal energy waste water 11 and the thermal energy waste water 12 are connected to the respective heat pumps by one branch, i.e. the water-water heat exchangers are omitted.
Example 4
The embodiment 4 is different from the embodiment 1 only in that, on the basis of the embodiment 1, the effluent of the low thermal energy wastewater supply device 1 is divided into the first, second and third low thermal energy wastewater pipes to output thermal energy wastewater, the low thermal energy wastewater 11 supplied by the first thermal energy wastewater pipe is supplied to the first heat application unit 20, the low thermal energy wastewater 12 supplied by the second thermal energy wastewater pipe is supplied to the second heat application unit 70, and the third thermal energy wastewater pipe is supplied to the third heat application unit 90. In other words, the bathing wastewater or the mine water collected by the low-heat wastewater supply device 1 is not used by the water-alcohol exchanger 7 of the second heat application unit 70 before entering the third heat application unit 90, but is directly applied to the third heat application unit 90 to heat the heating return water 17 for indoor heating of the residents. Therefore, the temperature difference between the low-temperature low-pressure heat transfer working medium in the third heat pump group 10 is increased by maintaining the temperature of the low-heat energy wastewater input into the third heat application unit 90, so that the heat transfer efficiency with the heat transfer working medium is increased, and the working efficiency of the third heat pump group 10 is increased.
It should be noted that the above embodiments can be combined arbitrarily while ensuring the feasibility, and various combinations that meet the basic concept of the present invention and achieve better technical effects are within the protection scope of the present invention. Therefore, the technical solutions of the present invention are not limited to the specific embodiments.
Claims (5)
1. A multi-energy complementary mine heating system, comprising:
the low-heat waste water supply device collects low-heat waste water containing bathing waste water and mine water and outputs the low-heat waste water outwards through a low-heat waste water pipe, and the low-heat waste water pipe comprises a first low-heat waste water pipe and a second low-heat waste water pipe;
the first heat application unit comprises a first heat pump set and a tap water source, and each heat pump of the first heat pump set comprises an evaporator end and a heat exchanger end; the water of the first low-heat energy wastewater pipe is respectively connected to the evaporator end of each heat pump of the first heat pump set through a branch; tap water supplied by the tap water source sequentially passes through the heat exchanger ends of the heat pumps of the first heat pump group, so that the tap water is heated to a preset temperature in multiple stages; the first heat application unit also comprises a water-water heat exchanger, one end of the water-water heat exchanger is connected with the tap water source, and the other end of the water-water heat exchanger is connected with the first low-heat energy waste water pipe, so that tap water supplied by the tap water source is preheated through the water-water heat exchanger and then sequentially flows through the heat pumps of the first heat pump group;
the second heat application unit comprises a water-alcohol heat exchanger and an alcohol-air heat exchanger, the low-heat energy waste water supply device supplies low-heat energy waste water to the water-alcohol heat exchanger through a second low-heat energy waste water pipe, alcohol in the water-alcohol heat exchanger absorbs heat of the low-heat energy waste water to be changed into hot alcohol, the hot alcohol heats air through the alcohol-air heat exchanger, and the heated air is used for preventing freezing of a wellhead of a mine;
a third heat application unit including a second heat pump group and a heating return pipe supplying heating return water; each heat pump of the second heat pump set comprises an evaporator end and a heat exchanger end; the low-heat-energy wastewater from the water-alcohol heat exchanger is respectively connected to the evaporator ends of the heat pumps of the second heat pump group through branches; the heat exchanger ends of the heat pumps of the second heat pump group are connected with the heating return water pipe in series, and the heating return water sequentially passes through the heat exchanger ends of the heat pumps of the second heat pump group to enable the heating return water to be heated to a preset temperature in multiple stages;
the third heat application unit also comprises a water-air heat exchanger, the water-air heat exchanger heats air entering the water-air heat exchanger by using heating return water heated by the 3 heat pumps of the third heat application unit, and the heated air is used for preventing freezing of a well mouth of a mine;
the first heat application unit also comprises a first data processing module and a plurality of meters, wherein the meters comprise a flowmeter, a pressure meter and a thermometer, and are used for monitoring flow, pressure and temperature data of tap water and low-heat-energy wastewater before and after entering and exiting the heat exchanger and before and after entering and exiting each heat pump, and reporting the data to the control system;
the second heat application unit also comprises a second data processing module and a plurality of instruments, wherein the instruments comprise a flow meter, a pressure meter and a thermometer and are used for monitoring the flow, pressure and temperature data of the low-heat-energy wastewater before and after entering and exiting the water-alcohol heat exchanger, the alcohol before and after entering the alcohol-air heat exchanger and the air before and exiting the alcohol-air heat exchanger, and reporting the data to a control system;
the control system coordinates the flow distribution of the first and second low-heat energy waste water pipes according to the monitored flow, pressure and temperature data, adjusts the power of the motors/motors of each heat pump and each heat exchanger, achieves the effect of adjusting the temperature and ensures the ordered operation of the whole set of heat supply system.
2. The multi-energy complementary mine heating system of claim 1, wherein the first heat pump set of the first heat application unit comprises more than 2 heat pumps; the second heat pump group of the third heat application unit includes 2 or more heat pumps.
3. The multi-energy complementary mine heating system according to claim 1, wherein the first heat application unit comprises 1 water-water heat exchanger and 3 heat pumps, the low-heat waste water of the first low-heat waste water pipe firstly flows through the water-water heat exchanger to preheat tap water entering the water-water heat exchanger, and the low-heat waste water from the water-water heat exchanger is respectively connected with evaporator ends of the 3 heat pumps in a branch way; the preheated tap water sequentially passes through the heat exchange ends of the 3 heat pumps; the heat of the low-heat-energy wastewater flowing through the water-water heat exchanger is extracted by the 3 heat pumps respectively, and the tap water is heated to a preset temperature for multiple times.
4. The multi-energy complementary mine heating system according to claim 1, wherein the third heat application unit comprises 1 water-water heat exchanger and 3 heat pumps, the low-heat-energy waste water from the water-alcohol heat exchanger firstly flows through the water-water heat exchanger to preheat the heating return water entering the water-water heat exchanger, and the low-heat-energy waste water from the water-water heat exchanger is connected with the evaporator ends of the 3 heat pumps by a branch respectively; the preheated heating backwater sequentially passes through the heat exchange ends of the 3 heat pumps; the heat of the low-heat-energy wastewater flowing through the water-water heat exchanger is extracted by the 3 heat pumps respectively, and the heating return water is heated to a preset temperature for multiple times.
5. A multi-energy complementary mine heating system, comprising:
the low-heat energy waste water supply device is used for collecting low-heat energy waste water including bathing waste water and mine water and outputting the low-heat energy waste water outwards through a low-heat energy waste water pipe, and the low-heat energy waste water pipe comprises a first low-heat energy waste water pipe and a second low-heat energy waste water pipe;
the first heat application unit comprises a first water-water heat exchanger, a first heat pump set and a tap water source, wherein the first heat pump set comprises 3 heat pumps, and each heat pump comprises an evaporator end and a heat exchanger end; the first low-heat energy waste water pipe and a tap water source are both communicated with the first water-water heat exchanger, and the tap water is preheated by the low-heat energy waste water through the first water-water heat exchanger; the low-heat-energy wastewater from the first water-water heat exchanger is respectively connected with the evaporator ends of the 3 heat pumps by branches, and the preheated tap water sequentially flows through the heat exchange ends of the 3 heat pumps, so that the preheated tap water is cumulatively heated to a preset temperature by the 3 heat pumps;
the second heat application unit comprises a water-alcohol heat exchanger and an alcohol-air heat exchanger, the low-heat energy waste water supply device supplies low-heat energy waste water to the water-alcohol heat exchanger through a second low-heat energy waste water pipe, alcohol in the water-alcohol heat exchanger absorbs heat of the low-heat energy waste water to be changed into hot alcohol, the hot alcohol heats air through the alcohol-air heat exchanger, and the heated air is used for preventing freezing of a wellhead of a mine;
the third heat application unit comprises a second water-water heat exchanger, a second heat pump group and a heating water return pipe, wherein the heating water return pipe supplies heating water, the second heat pump group comprises 3 heat pumps, and each heat pump comprises an evaporator end and a heat exchanger end; inputting the low-heat-energy wastewater and the heating return water from the water-alcohol heat exchanger into the second water-water heat exchanger, and preheating the heating return water by using the low-heat-energy wastewater; the low-heat-energy wastewater from the second water-water heat exchanger is respectively connected with the evaporator ends of the 3 heat pumps by branches, and the preheated heating backwater sequentially flows through the heat exchange ends of the 3 heat pumps, so that the preheated heating backwater is cumulatively heated to a preset temperature by the 3 heat pumps;
the third heat application unit also comprises a water-air heat exchanger, the water-air heat exchanger heats air entering the water-air heat exchanger by using heating return water from 3 heat pumps of the third heat application unit, and the heated air is used for preventing freezing of a well mouth of a mine;
the first heat application unit also comprises a first data processing module and a plurality of meters, wherein the meters comprise a flowmeter, a pressure meter and a thermometer, and are used for monitoring flow, pressure and temperature data of tap water and low-heat-energy wastewater before and after entering and exiting the heat exchanger and before and after entering and exiting each heat pump, and reporting the data to the control system;
the second heat application unit also comprises a second data processing module and a plurality of instruments, wherein the instruments comprise a flow meter, a pressure meter and a thermometer and are used for monitoring the flow, pressure and temperature data of the low-heat-energy wastewater before and after entering and exiting the water-alcohol heat exchanger, the alcohol before and after entering the alcohol-air heat exchanger and the air before and exiting the alcohol-air heat exchanger, and reporting the data to a control system;
the third heat application unit also comprises a third data processing module and a plurality of meters, wherein the meters comprise a flowmeter, a pressure meter and a thermometer, and are used for monitoring flow, pressure and temperature data of heating return water and low-heat-energy wastewater before and after entering and exiting the heat exchanger, before and after entering and exiting each heat pump and before and after heating return water provides heating for residents, and reporting the flow, pressure and temperature data to the control system;
the control system coordinates the flow distribution of the first and second low-heat energy waste water pipes according to the monitored flow, pressure and temperature data, adjusts the motor/motor power of each heat pump and heat exchanger, achieves the effect of adjusting the temperature, and ensures the ordered operation of the whole set of heat supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810571987.0A CN108758778B (en) | 2018-06-04 | 2018-06-04 | Multi-energy complementary mine area heat supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810571987.0A CN108758778B (en) | 2018-06-04 | 2018-06-04 | Multi-energy complementary mine area heat supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108758778A CN108758778A (en) | 2018-11-06 |
| CN108758778B true CN108758778B (en) | 2021-04-27 |
Family
ID=63999779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810571987.0A Active CN108758778B (en) | 2018-06-04 | 2018-06-04 | Multi-energy complementary mine area heat supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108758778B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2023977B1 (en) * | 2019-10-08 | 2021-06-01 | Solar Energy Booster B V | Thermal system. |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201460813U (en) * | 2009-05-13 | 2010-05-12 | 鹿松年 | Wellhead anti-freezing heating system by using mine water residual heat to supply heat |
| CN202158688U (en) * | 2010-07-30 | 2012-03-07 | 山东同方能源工程技术有限公司 | Heating and cooling system by means of mine inflow waste heat in industrial and mining enterprises |
| CN202452593U (en) * | 2012-01-16 | 2012-09-26 | 王林芝 | Automatic hot water supply system capable of collecting solar energy to supply each household |
| KR20130043839A (en) * | 2011-10-21 | 2013-05-02 | 배희봉 | An non-freezing hot-water generating device preventing a low temperature evaporation |
| CN104315583A (en) * | 2014-09-23 | 2015-01-28 | 大连葆光节能空调设备厂 | Energy-saving heat supply system for reducing heat supply return water temperature and recovering city waste heat |
-
2018
- 2018-06-04 CN CN201810571987.0A patent/CN108758778B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201460813U (en) * | 2009-05-13 | 2010-05-12 | 鹿松年 | Wellhead anti-freezing heating system by using mine water residual heat to supply heat |
| CN202158688U (en) * | 2010-07-30 | 2012-03-07 | 山东同方能源工程技术有限公司 | Heating and cooling system by means of mine inflow waste heat in industrial and mining enterprises |
| KR20130043839A (en) * | 2011-10-21 | 2013-05-02 | 배희봉 | An non-freezing hot-water generating device preventing a low temperature evaporation |
| CN202452593U (en) * | 2012-01-16 | 2012-09-26 | 王林芝 | Automatic hot water supply system capable of collecting solar energy to supply each household |
| CN104315583A (en) * | 2014-09-23 | 2015-01-28 | 大连葆光节能空调设备厂 | Energy-saving heat supply system for reducing heat supply return water temperature and recovering city waste heat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108758778A (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhao et al. | Study of the performance of an urban original source heat pump system | |
| CN105972681B (en) | Water resource heat pump-steam turbine combining heating system complementary with heat supply network | |
| CN109489101B (en) | Central heating system and central heating method thereof | |
| CN109737487B (en) | Energy management system suitable for students' dormitory and capable of recycling domestic wastewater waste heat for heating by using sewage source heat pump | |
| CN101655294A (en) | Ground source heat pump system for recovering heat of wind in tunnel | |
| CN104501275A (en) | Stepped heating and supplying system sufficiently utilizing waste heat of power plant | |
| CN207849525U (en) | A kind of increasing steam turbine steam exhaust recycling and full hydro-thermal pump combining heating system | |
| CN103115388A (en) | Thermal power plant circulating water heat supply system | |
| CN102226542A (en) | Ejector type heat pump heat transfer set | |
| CN108758778B (en) | Multi-energy complementary mine area heat supply system | |
| CN203099961U (en) | Circulating water heat-supply system of thermal power plant | |
| CN103982933B (en) | The large temperature difference heat-exchange unit of injection-compression combined formula | |
| CN109059084A (en) | A kind of combined heat-pump system and method using urban domestic garbage degradation heat | |
| CN102486317A (en) | Heat supplying method of cooling water residual heat recycling energy-saving system of thermal power plant | |
| CN108131709A (en) | A kind of increasing steam turbine steam exhaust recycling pumps combining heating system with full hydro-thermal | |
| CN101949558B (en) | Life hot water heat pump system using waste heat of circulating cooling water | |
| CN215260569U (en) | Winter raw water heating system based on waste heat of heat supply steam condensate of thermal power plant | |
| CN203848272U (en) | Heating-network dewatering and heating system of heat supply unit | |
| CN212274319U (en) | Distributed sewage source heat pump heating and refrigerating device | |
| CN217737401U (en) | Industrial waste heat and geothermal combined heating system | |
| CN218721378U (en) | Flue gas waste heat utilization system | |
| CN207862375U (en) | Blast furnace slag quenching water waste heat recovery reutilization system | |
| CN219955664U (en) | Crude oil heating device of air source heat pump | |
| CN202008182U (en) | Waste heat recycling, energy saving and heat supply system for cooling water of thermal power plant | |
| CN114576677B (en) | Gas heat pump unit, heat supply method and heat supply equipment of central heat supply pipe network |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |