CN112728619A - Energy-saving heating system for improving heat supply backwater utilization rate - Google Patents
Energy-saving heating system for improving heat supply backwater utilization rate Download PDFInfo
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- CN112728619A CN112728619A CN202011596994.XA CN202011596994A CN112728619A CN 112728619 A CN112728619 A CN 112728619A CN 202011596994 A CN202011596994 A CN 202011596994A CN 112728619 A CN112728619 A CN 112728619A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
- F24D11/005—Central heating systems using heat accumulated in storage masses water heating system with recuperation of waste heat
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- 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
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
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Abstract
The invention relates to an energy-saving heating system for improving the utilization rate of heating backwater, which comprises a self-priming pump and a heat exchange circulating loop, the expansion device is arranged in succession, filter equipment and sensing system constitute, the self priming pump passes through the pipeline and is connected with heat transfer circulation circuit, heat transfer circulation circuit rethread is arranged expansion device and filter equipment in succession and is connected, the water pump is connected with one-level booster heat exchanger, one-level booster heat exchanger passes through one-level booster heat exchanger outlet valve and compressor one end is connected, the compressor other end is connected with second grade booster heat exchanger's second grade booster heat exchanger import valve, second grade booster heat exchanger passes through second grade booster heat exchanger air outlet valve and warm air collection device and connects, second grade booster heat exchanger lower extreme sets up second grade booster heat exchanger outlet valve, second grade booster heat exchanger and condenser one end are connected, the condenser is connected through one-level booster heat exchanger backward. On one hand, the utilization rate of the heat supply backwater is improved, and on the other hand, the heat backwater energy-saving heat supply system is monitored and controlled through the sensing system.
Description
Technical Field
The invention relates to the technical field of heat energy circulation, in particular to an energy-saving heat supply system for improving the utilization rate of heat supply backwater.
Background
Although the prior cogeneration realizes the step utilization of energy, the conventional cogeneration still belongs to a traditional heating mode, and has low heating efficiency and great energy waste. The waste heat emitted by the cooling tower of the power plant is the most concentrated waste heat resource in an urban area, is called as an urban waste heat energy source island, and the waste heat is only of no quality and low grade and cannot be utilized. The heat dissipated by the cooling tower accounts for 20% -30% of the total energy, and a large amount of water resources are consumed, so that the condition of water shortage in the north is particularly severe.
The conventional heat supply mode generally adopts the water supply temperature of a primary heat supply network of 110 ℃ and the water return temperature of the primary heat supply network of 70 ℃. The temperature difference between the supplied water and the returned water is small, so that the energy consumption of the circulating pump is large, the conveying efficiency is low, the heat loss of the supplied water and the returned water pipeline is serious, and a large amount of waste heat is wasted because the returned water temperature of the primary heat supply network is 70 ℃ and waste heat of a cooling tower of a power plant cannot be added. Under the severe conditions of accelerated urbanization process and large-scale city construction in China, the original heat supply pipe network has limited conveying capacity and is difficult to meet the requirements, and if the heat supply pipe network needs to be expanded, the investment is huge and is strictly limited. The hot water has low recycling efficiency, and a cooling tower and natural cooling are adopted, so that a large amount of energy is wasted in the cooling process of the hot water, and the resource recycling is not facilitated.
Therefore, a system for recycling and utilizing the hot return water is needed, the hot water is conveniently recycled and utilized, the energy is saved, and the utilization efficiency of the energy is improved.
Disclosure of Invention
The invention relates to an energy-saving heating system for improving the utilization rate of heating backwater, which consists of a self-sucking pump, a heat exchange circulating loop, a continuous-row expansion device, a filtering device and a sensing system, wherein the self-sucking pump is connected with one end of the heat exchange circulating loop through a pipeline; the water pump is connected with a first-stage supercharging heat exchanger inlet valve of the first-stage supercharging heat exchanger through a water pump outlet valve, the first-stage supercharging heat exchanger is connected with one end of a compressor through a first-stage supercharging heat exchanger outlet valve, the other end of the compressor is connected with a second-stage supercharging heat exchanger inlet valve of the second-stage supercharging heat exchanger, the second-stage supercharging heat exchanger is connected with a heating air collecting device through a second-stage supercharging heat exchanger outlet valve, the lower end of the second-stage supercharging heat exchanger is provided with a second-stage supercharging heat exchanger outlet valve, the second-stage supercharging heat exchanger outlet valve is connected with one.
Further, the self-priming pump comprises a motor, a bearing cover, an impeller and a bearing, the lower end of the self-priming pump is installed on the support table, the motor is arranged inside the self-priming pump, the bearing is installed in the bearing cover, and the motor controls the impeller to rotate through the bearing; the self-priming pump is connected with one end of a heat exchange control valve through a pipeline, and the other end of the heat exchange control valve is connected with a water pump inlet valve of the water pump.
Furthermore, the continuous discharge capacity expansion device consists of a continuous discharge capacity expander, a continuous discharge capacity expander inlet valve, a continuous discharge capacity expander outlet valve and a continuous discharge capacity expander control valve; the first-stage supercharging heat exchanger is connected with one end of the continuous discharge flash tank control valve through a first-stage supercharging heat exchanger valve, and the other end of the continuous discharge flash tank control valve is connected with a continuous discharge flash tank inlet valve of the continuous discharge flash tank.
Furthermore, filter equipment includes filtering ponds, filter screen, filters import and filters the export, and filter equipment is connected with the flash tank outlet valve that is arranged in succession of flash tank device through filtering the import.
Furthermore, sealing rings are arranged among the water pump, a water pump inlet valve and a water pump outlet valve; sealing rings are arranged among the first-stage supercharging heat exchanger, the first-stage supercharging heat exchanger inlet valve, the first-stage supercharging heat exchanger reflux valve, the first-stage supercharging heat exchanger outlet valve and the first-stage supercharging heat exchanger valve; and sealing rings are arranged between the two-stage supercharging heat exchanger and the inlet valve of the two-stage supercharging heat exchanger, between the two-stage supercharging heat exchanger and the outlet valve of the two-stage supercharging heat exchanger and between the two-stage supercharging heat exchanger and the outlet valve of the two-stage supercharging heat exchanger.
Furthermore, a first-stage booster heat exchanger air outlet valve is also arranged on the first-stage booster heat exchanger and is connected with a heating air collecting device
Further, the sensing system comprises a valve sensor, an A/D converter, an amplifier, a signal receiver and a controller; the valve sensor is installed in heat exchange control valve and the flash tank control valve that is arranged in succession, and sensing system one end is passed through valve sensor and heat exchange control valve and is arranged flash tank control valve in succession and connect, and the sensing system other end passes through sensing signal and signal receiver connects.
The energy-saving heating system for improving the utilization rate of the heat supply backwater has the following beneficial effects.
1. The invention provides an energy-saving heat supply system for improving the utilization rate of heat supply backwater, which consists of a self-priming pump, a heat exchange circulation loop, a continuous discharge capacity expansion device, a filtering device and a sensing system; hot water pumping is realized through a self-sucking pump, hot gas energy in the hot water is collected by utilizing a heat exchange circulation loop, and hot water is cooled, so that the utilization efficiency of hot backwater and resources is improved.
2. According to the energy-saving heating system for improving the utilization rate of the heat supply backwater, after the heat is collected by the continuous discharge expansion device and the filtering device, the heat supply backwater is collected and filtered by the continuous discharge expansion device, and then the cooling water is recycled by filtering again by the filtering device, so that on one hand, the system can be used in a later period, and on the other hand, the environment is protected and water pollution is avoided.
3. According to the energy-saving heat supply system for improving the heat supply and return water utilization rate, the heat exchange control valve and the continuous discharge flash tank control valve are controlled to be opened and closed through the sensing system, so that the pipeline can be maintained and replaced in time conveniently, and the energy-saving heat supply system can be monitored.
Drawings
FIG. 1 is a schematic view of an energy-saving heating system for improving the utilization rate of heating backwater according to the present invention;
FIG. 2 is a system diagram of a heat exchange circulation loop of an energy-saving heating system for improving the utilization rate of heating backwater, which is provided by the invention;
FIG. 3 is a diagram of a continuous-drainage capacity-expanding device and a filtering device of an energy-saving heating system for improving the utilization rate of heating backwater, which is provided by the invention;
FIG. 4 is a flow chart of a sensing system of an energy-saving heating system for improving the utilization rate of heating backwater according to the present invention.
Wherein: 100. the self-priming pump comprises a self-priming pump, 101, a motor, 102, a support platform, 103, a bearing cover, 104, an impeller, 105, a bearing channel, 200, a heat exchange circulation loop, 201, a pipeline, 202, a heat exchange control valve, 203, a water pump, 203-1, a water pump inlet valve, 203-2, a water pump outlet valve, 204, a primary booster heat exchanger, 204-1, a primary booster heat exchanger inlet valve, 204-2, a primary booster heat exchanger reflux valve, 204-3, a primary booster heat exchanger outlet valve, 204-4, a primary booster heat exchanger valve, 204-5, a primary booster heat exchanger outlet valve, 205, a compressor, 206, a secondary booster heat exchanger, 206-1, a secondary booster heat exchanger inlet valve, 206-2, a secondary booster heat exchanger outlet valve, 206-3, a secondary booster heat exchanger outlet valve, 207, a condenser, 208 and a heating collecting device, 300. the system comprises a continuous-row flash tank device, 301, a continuous-row flash tank, 302, a continuous-row flash tank inlet valve, 303, a continuous-row flash tank outlet valve, 304, a continuous-row flash tank control valve, 400, a filtering device, 401, a filtering tank, 402, a filtering net, 403, a filtering inlet, 404, a filtering outlet, 500, a sensing system, 501, a valve sensor, 502, an A/D converter, 503, an amplifier, 504, a signal receiver, 505 and a controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
Referring to fig. 1 and fig. 2, the energy-saving heating system for improving the utilization rate of heating backwater according to the present invention is composed of a self-priming pump 100, a heat exchange circulation loop 200, a continuous discharge capacity expansion device 300, and a filtering device 400, wherein the self-priming pump 100 is connected with one end of the heat exchange circulation loop 200 through a pipeline 201, one end of the heat exchange circulation loop 200 is connected with the filtering device 400 through the continuous discharge capacity expansion device 300, and the heat exchange circulation loop 200 includes a heat exchange control valve 202, a water pump 203, a primary booster heat exchanger 204, a compressor 205, a secondary booster heat exchanger 206, a condenser 207, and a heating air collection device 208; the water pump 203 is connected with a first-stage booster heat exchanger inlet valve 204-1 of the first-stage booster heat exchanger 204 through a water pump outlet valve 203-2, the first-stage booster heat exchanger 204 is connected with one end of a compressor 205 through a first-stage booster heat exchanger outlet valve 204-3, the other end of the compressor 205 is connected with a second-stage booster heat exchanger inlet valve 206-1 of a second-stage booster heat exchanger 206, the second-stage booster heat exchanger 206 is connected with a heating air collecting device 208 through a second-stage booster heat exchanger outlet valve 206-2, a second-stage booster heat exchanger outlet valve 206-3 is arranged at the lower end of the second-stage booster heat exchanger 206, the second-stage booster heat exchanger outlet valve 206-3 is connected with one end of a condenser 207. Hot water in the self-priming pump 100 is pumped into the first-stage booster heat exchanger 204 by the water pump 203, the first-stage booster heat exchanger 204 starts to work to separate water and hot gas, the hot gas enters the heating air collecting device 208 through the first-stage booster heat exchanger outlet valve 204-5, the separated water and the separated hot gas enter the compressor 205 through the first-stage booster heat exchanger outlet valve 204-3, the compressor 205 changes the liquid state into a high-temperature and high-pressure gas state, the high-temperature and high-pressure gas state is then conveyed into the second-stage booster heat exchanger 206, the second-stage booster heat exchanger 206 works to separate the water and the hot gas again, the hot gas enters the heating air collecting device 208 through the second-stage booster heat exchanger outlet valve 206-.
The self-priming pump 100 comprises a motor 101, a bearing cover 103, an impeller 104 and a bearing 105, the lower end of the self-priming pump 100 is installed on a support platform 102, the motor 101 is arranged inside the self-priming pump 100, the bearing 105 is installed in the bearing cover 103, and the motor 101 controls the impeller 104 to rotate through the bearing 105; the self-priming pump 100 is connected with one end of a heat exchange control valve 202 through a pipeline 201, and the other end of the heat exchange control valve 202 is connected with a water pump inlet valve 203-1 of a water pump 203. The self-priming pump 100 is used for providing a larger suction force to collect and pump water to be subjected to hot backwater treatment into the water pump 203, so that the operation of the next sequence is facilitated.
Referring to fig. 3, the continuous discharge flash apparatus 300 is composed of a continuous discharge flash tank 301, a continuous discharge flash tank inlet valve 302, a continuous discharge flash tank outlet valve 303, and a continuous discharge flash tank control valve 304; the first-stage booster heat exchanger 204 is connected with one end of a continuous discharge flash tank control valve 304 through a first-stage booster heat exchanger valve 204-4, and the other end of the continuous discharge flash tank control valve 304 is connected with a continuous discharge flash tank inlet valve 302 of a continuous discharge flash tank 301.
Referring to fig. 3, the filtering apparatus 400 includes a filtering tank 401, a filtering net 402, a filtering inlet 403 and a filtering outlet 404, and the filtering apparatus 400 is connected to the continuous discharge flash tank outlet valve 303 of the continuous discharge flash tank 300 through the filtering inlet 403. Cooled water firstly enters the continuous drainage expansion device 300, sewage performs tangential motion in the continuous drainage expansion device 300 and is vaporized into secondary steam, the secondary steam is subjected to steam-water separation through a shutter type steam-water separator at the upper part and then is introduced into a deaerator through an outlet at the top of the continuous drainage, the remained sewage is discharged into a filter tank 401 through a continuous drainage expansion device control valve 304, the filter screen 402 firstly filters, sewage is treated in the filter tank 401, for example, alum is added and disinfection is performed, and thus, the water in the filter tank 401 is discharged through a filter outlet 404, the environment is not polluted, and the ecology is protected.
Sealing rings are arranged between the water pump 203 and the water pump inlet valve 203-1 and the water pump outlet valve 203-2; sealing rings are arranged between the primary booster heat exchanger 204 and the primary booster heat exchanger inlet valve 204-1, the primary booster heat exchanger return valve 204-2, the primary booster heat exchanger outlet valve 204-3 and the primary booster heat exchanger valve 204-4; sealing rings are arranged between the two-stage booster heat exchanger 206 and the two-stage booster heat exchanger inlet valve 206-1, the two-stage booster heat exchanger outlet valve 206-2 and the two-stage booster heat exchanger outlet valve 206-3. And a sealing ring is arranged between each inlet valve and each outlet valve, the sealing ring plays a role in sealing, heat supply backwater is prevented from being leaked in the treatment process, and the sealing performance of the device is protected.
Referring to fig. 2, the first-stage booster heat exchanger 204 is further provided with a first-stage booster heat exchanger outlet valve 204-5, and the first-stage booster heat exchanger outlet valve 204-5 is connected with a heating air collecting device 208.
Referring to fig. 4, the sensing system 500 includes a valve sensor 501, an a/D converter 502, an amplifier 503, a signal receiver 504, and a controller 505; the valve sensor 501 is installed in the heat exchange control valve 202 and the continuous discharge flash tank control valve 304, one end of the sensing system 500 is connected with the heat exchange control valve 202 and the continuous discharge flash tank control valve 304 through the valve sensor 501, and the other end of the sensing system 500 is connected with the signal receiver 504 through a sensing signal. The valve sensor 501 can amplify a signal of the pressure in the pipeline through the A/D converter 502 in real time by the amplifier 503, and then transmit the signal to the signal receiver 504, the signal receiver 504 receives the signal and controls the controller 505, the controller 505 controls the opening and closing of the heat exchange control valve 202 and the continuous discharge flash tank control valve 304, on one hand, the arrangement of the sensing system 500 finds the problem in the pipeline in time, so that the pipeline can be maintained and replaced in time, and on the other hand, the monitoring of the energy-saving heating system is facilitated through the sensing system 500.
When the energy-saving heating system for improving the utilization rate of heating backwater works, firstly, hot water in a self-priming pump 100 is pumped into a primary booster heat exchanger 204 by a water pump 203, the primary booster heat exchanger 204 starts to work to separate water from hot gas, the hot gas enters a heating collecting device 208 through a primary booster heat exchanger outlet valve 204-5, the separated water and the separated hot gas enter a compressor 205 through a primary booster heat exchanger outlet valve 204-3, the compressor 205 changes the liquid state into a high-temperature high-pressure gas state and then conveys the gas state into a secondary booster heat exchanger 206, the secondary booster heat exchanger 206 works to separate the water from the hot gas again, the hot gas enters the heating collecting device 208 through a secondary booster heat exchanger outlet valve 206-2, the water enters a condenser 207 through a secondary booster heat exchanger outlet valve 206-3, the water in the condenser 207 enters a continuous discharge flash tank device 300 through a continuous discharge flash tank control valve 304 after being condensed, the continuous discharge flash tank device 300 is subjected to primary treatment, enters a filtering inlet 403 from a continuous discharge flash tank outlet valve 303 and leads to a filtering tank 401, a filtering net 402 is used for filtering firstly, sewage is treated in the filtering tank 401, and then the treated water is discharged through a filtering outlet 404. The valve sensor 501 in the sensing system 500 is arranged in the heat exchange control valve 202 and the exhaust flash tank control valve 304, the sensing system 500 can amplify a signal in a pipeline through the A/D converter 502 in real time, the signal is transmitted to the signal receiver 504, the signal receiver 504 receives the signal to be controlled by the controller 505, and the controller 505 controls the opening and closing of the heat exchange control valve 202 and the exhaust flash tank control valve 304.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. An energy-saving heating system for improving the utilization rate of heating backwater comprises a self-sucking pump (100), a heat exchange circulating loop (200), a continuous-row expansion device (300), a filtering device (400) and a sensing system (500), wherein the self-sucking pump (100) is connected with one end of the heat exchange circulating loop (200) through a pipeline (201), and one end of the heat exchange circulating loop (200) is connected with the filtering device (400) through the continuous-row expansion device (300), and is characterized in that the heat exchange circulating loop (200) comprises a heat exchange control valve (202), a water pump (203), a primary booster heat exchanger (204), a compressor (205), a secondary booster heat exchanger (206), a condenser (207) and a warm air collecting device (208); the water pump (203) is connected with a first-stage booster heat exchanger inlet valve (204-1) of the first-stage booster heat exchanger (204) through a water pump outlet valve (203-2), the first-stage booster heat exchanger (204) is connected with one end of a compressor (205) through a first-stage booster heat exchanger outlet valve (204-3), the other end of the compressor (205) is connected with a second-stage booster heat exchanger inlet valve (206-1) of a second-stage booster heat exchanger (206), the second-stage booster heat exchanger (206) is connected with a heating air collecting device (208) through a second-stage booster heat exchanger outlet valve (206-2), the lower end of the second-stage booster heat exchanger (206) is provided with a second-stage booster heat exchanger outlet valve (206-3), the second-stage booster heat exchanger outlet valve (206-3) is connected with one end of a condenser (207), and the other end of the condenser (207) is.
2. The energy-saving heating system for improving the utilization rate of returned heat water according to claim 1, wherein the self-sucking pump (100) comprises a motor (101), a bearing cover (103), an impeller (104) and a bearing (105), the lower end of the self-sucking pump (100) is mounted on the support table (102), the motor (101) is arranged inside the self-sucking pump (100), the bearing (105) is mounted in the bearing cover (103), and the motor (101) controls the impeller (104) to rotate through the bearing (105); the self-priming pump (100) is connected with one end of a heat exchange control valve (202) through a pipeline (201), and the other end of the heat exchange control valve (202) is connected with a water pump inlet valve (203-1) of a water pump (203).
3. The energy-saving heating system for improving the utilization rate of heating return water according to claim 1, wherein the continuous-row flash tank device (300) consists of a continuous-row flash tank (301), a continuous-row flash tank inlet valve (302), a continuous-row flash tank outlet valve (303) and a continuous-row flash tank control valve (304); the primary booster heat exchanger (204) is connected with one end of a continuous discharge flash tank control valve (304) through a primary booster heat exchanger valve (204-4), and the other end of the continuous discharge flash tank control valve (304) is connected with a continuous discharge flash tank inlet valve (302) of a continuous discharge flash tank (301).
4. The energy-saving heating system for improving the utilization rate of heating return water according to claim 1, wherein the filtering device (400) comprises a filtering tank (401), a filtering net (402), a filtering inlet (403) and a filtering outlet (404), and the filtering device (400) is connected with the continuous-row flash tank outlet valve (303) of the continuous-row flash tank device (300) through the filtering inlet (403).
5. An energy-saving heating system for improving the utilization rate of heating backwater, according to claim 1, characterized in that sealing rings are arranged between the water pump (203) and the water pump inlet valve (203-1) and the water pump outlet valve (203-2); sealing rings are arranged among the primary booster heat exchanger (204), a primary booster heat exchanger inlet valve (204-1), a primary booster heat exchanger return valve (204-2), a primary booster heat exchanger outlet valve (204-3) and a primary booster heat exchanger valve (204-4); sealing rings are arranged between the two-stage booster heat exchanger (206) and the inlet valve (206-1) of the two-stage booster heat exchanger, between the outlet valve (206-2) of the two-stage booster heat exchanger and between the outlet valve (206-3) of the two-stage booster heat exchanger.
6. The energy-saving heating system for improving the utilization rate of the heating return water as claimed in claim 1, wherein a primary booster heat exchanger outlet valve (204-5) is further arranged on the primary booster heat exchanger (204), and the primary booster heat exchanger outlet valve (204-5) is connected with a heating air collecting device (208).
7. An energy saving heating system for improving the utilization rate of heating return water according to claim 1, characterized in that the sensing system (500) comprises a valve sensor (501), an A/D converter (502), an amplifier (503), a signal receiver (504) and a controller (505); the valve sensor (501) is installed in the heat exchange control valve (202) and the continuous-row flash tank control valve (304), one end of the sensing system (500) is connected with the heat exchange control valve (202) and the continuous-row flash tank control valve (304) through the valve sensor (501), and the other end of the sensing system (500) is connected with the signal receiver (504) through sensing signals.
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