CN213362920U - Waste heat utilization system based on electrically-driven water source heat pump unit - Google Patents
Waste heat utilization system based on electrically-driven water source heat pump unit Download PDFInfo
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- CN213362920U CN213362920U CN202022189453.7U CN202022189453U CN213362920U CN 213362920 U CN213362920 U CN 213362920U CN 202022189453 U CN202022189453 U CN 202022189453U CN 213362920 U CN213362920 U CN 213362920U
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Abstract
The utility model relates to a waste heat utilization system based on electric drive water source heat pump set, including power plant's circulating water system, electric drive water source heat pump set and terminal heat transfer device. The power plant circulating water system and the electric drive water source heat pump unit system are connected end to end through pipelines to form a first circulating loop. The terminal heat exchange device and the electric drive water source heat pump unit are connected end to end through pipelines to form a second circulation loop. The electrically driven water source heat pump unit comprises a first heat exchange device and a second heat exchange device. The switching device selectively connects the first heat exchange device to the second circulation loop and connects the second heat exchange device to the first circulation loop, or connects the second heat exchange device to the second circulation loop and connects the first heat exchange device to the first circulation loop, so as to realize the switching of the heating and cooling modes of the electrically-driven water source heat pump unit. The problem of heat pump technology among the prior art in the regional utilization ratio low in south, the waste heat of retrieving can not be used for refrigeration is solved.
Description
Technical Field
The utility model relates to thermal power plant waste heat utilization technical field especially involves a waste heat utilization system based on electric drive water source heat pump set.
Background
The waste heat utilization technology of the thermal power plant is widely utilized, and the waste heat of the thermal power plant is recycled, so that the production energy consumption of power enterprises can be effectively reduced, and the comprehensive utilization level of energy of the power plant is improved.
The heat pump technology has attracted high attention from national and local governments because of its characteristics of high efficiency, energy saving and environmental protection. With the gradual maturity and rapid development of heat pump technology, the heat pump technology is more applied to northern areas in China, a large amount of steam is discharged from a thermal power plant, the steam drives a water source heat pump unit to recover waste heat of the thermal power plant, and the recovered waste heat is used for heating. However, in the southern areas of China, the heat supply demand is low and the cooling demand is high due to the influence of climate conditions, but in the southern areas, thermal power plants mostly have no abundant steam to provide a driving heat pump unit, so that the heat pump technology cannot be effectively utilized in the southern areas.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model relates to a waste heat utilization system based on electric drive water source heat pump set has solved the waste heat that heat pump technique is low, the recovery in south area utilization rate can not be used for refrigerated problem among the prior art.
Disclosure of the invention
To the above-mentioned defect among the prior art, the utility model provides a waste heat utilization system based on electrically driven heat pump set, concrete technical scheme is as follows:
a waste heat utilization system based on an electrically driven water source heat pump unit comprises a power plant circulating water system, the electrically driven water source heat pump unit and a terminal heat exchange device;
the power plant circulating water system and the electric drive water source heat pump unit are connected end to end through pipelines to form a first circulating loop;
the terminal heat exchange device is connected with the electrically driven water source heat pump unit end to end through a pipeline to form a second circulation loop;
the electrically driven water source heat pump unit comprises a first heat exchange device and a second heat exchange device, the first heat exchange device and the second heat exchange device are switched through a switching device, and the switching device is in communication connection with the control center; wherein the content of the first and second substances,
the switching device selectively connects the first heat exchange device to the second circulation circuit and connects the second heat exchange device to the first circulation circuit, or connects the second heat exchange device to the second circulation circuit and connects the first heat exchange device to the first circulation circuit.
Further, the switching device comprises a first bridge pipeline and a second bridge pipeline;
the first bridge type pipeline is connected to the first end of the electric drive water source heat pump unit, and the second bridge type pipeline is connected to the second end of the electric drive water source heat pump unit;
the first end is the water supply end of the waste heat water, and the second end is the water return end of the waste heat water.
Furthermore, both ends of the first bridge type pipeline are respectively connected with a waste hot water supply pipe and a terminal heat exchange device water inlet pipe;
the first bridge type pipeline is connected with a circulating water system of the power plant through a waste heat water supply pipe and is connected with a terminal heat exchange device through a terminal heat exchange device water inlet pipe;
two ends of the second bridge type pipeline are respectively connected with a residual hot water return pipe and a terminal heat exchange device return pipe;
the second bridge type pipeline is connected with a circulating water system of the power plant through a waste hot water return pipe and is connected with the terminal heat exchange device through a terminal heat exchange device return pipe.
Further, the first bridge type pipeline comprises a first pipeline and a second pipeline which are connected in parallel, and the second bridge type pipeline comprises a third pipeline and a fourth pipeline which are connected in parallel;
two ends of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are respectively provided with a control valve; two ends of the first heat exchange device are respectively communicated with the first pipeline and the third pipeline, and two ends of the second heat exchange device are respectively communicated with the second pipeline and the fourth pipeline.
The control valve is preferably an electric gate valve.
Further, the power plant circulating water system comprises a unit and a cooling tower, wherein the cooling tower, a circulating water inlet pipe, the unit and a circulating water return pipe are sequentially connected end to end;
the residual heat water supply pipe is communicated with the circulating water inlet pipe;
the waste hot water return pipe comprises a first waste hot water return pipe and a second waste hot water return pipe, the first waste hot water return pipe is communicated with the circulating water return pipe, and the second waste hot water return pipe is communicated with the cooling tower.
Furthermore, the connecting side of the waste hot water supply pipe and the circulating water inlet pipe, the connecting side of the first waste hot water return pipe and the circulating water return pipe, and the connecting side of the second waste hot water return pipe and the cooling tower are respectively provided with an electric butterfly valve.
Further, a first automatic backwashing filter is arranged on the water return pipe of the terminal heat exchange device, and a first temperature sensor and a flow sensor are sequentially arranged between the first automatic backwashing filter and the terminal heat exchange device;
a second automatic back-washing filter is arranged on the waste heat water supply pipe, and a second temperature sensor is arranged between the waste heat water supply pipe and the electric butterfly valve.
Further, the device also comprises a primary pump and a secondary pump;
the primary pump is arranged on the water return pipe of the terminal heat exchange device, and the secondary pump is arranged on the water inlet pipe of the terminal heat exchange device;
a constant pressure device is arranged between the first automatic backwashing filter and the primary pump;
the constant pressure device is in communication connection with the control center.
Further, the electrically driven water source heat pump unit is an integral device and also comprises a compressor; the first heat exchange device is a condenser, and the second heat exchange device is an evaporator.
(III) advantageous effects
Adopt the utility model relates to a waste heat utilization system based on electrically driven water source heat pump set, the effectual not enough of prior art of having solved.
The utility model discloses in, what water source heat pump set chooseed for use is electric drive water source heat pump set, and electric drive replaces steam drive, can extensively be applicable to china south area. The electric drive water source heat pump unit and the thermal power plant circulating water system are communicated through a pipeline to form a first circulating loop, and the terminal heat exchange device and the electric drive water source heat pump unit are communicated through a pipeline to form a second circulating loop. The electrically driven water source heat pump unit comprises a first heat exchange device and a second heat exchange device, and the control center realizes automatic switching of the first heat exchange device and the second heat exchange device through controlling the switching device. And during a heating period, the second heat exchange device is automatically switched into the first circulation loop through the switching device, the first heat exchange device is automatically switched into the second circulation loop, low-temperature return water in the second circulation loop absorbs heat of residual hot water in the first circulation loop, and the residual hot water flows back to the terminal heat exchange device after being heated to realize heating. During the refrigeration period, the first heat exchange device is automatically switched into the first circulation loop through the switching device, the second heat exchange device is automatically switched into the second circulation loop, residual hot water in the first circulation loop absorbs heat of high-temperature return water in the second circulation loop, and circulating water of the cooled terminal heat exchange device is pumped into the terminal heat exchange device, so that the refrigeration purpose is achieved. Has the effects of refrigeration and heating, realizes automatic control and has wider application range.
The utility model discloses in, the bridge type return circuit that auto-change over device chooseed for use, the bridge type return circuit is parallelly connected pipeline, sets up electric gate valve at the both ends of pipeline, starts or closes through electric gate valve to make the second with the pipeline intercommunication add first circulation circuit or second circulation circuit with heat transfer device or second heat transfer device, and then realize the switching of refrigeration period and heating period, in order to realize realizing heating in heating period, the refrigerated purpose in refrigeration period through electric drive water source heat pump set. And the switching device has simple structure and is convenient to control.
The utility model discloses in, set up automatic back flush filter on surplus hydrothermal delivery pipe and terminal heat transfer device's wet return respectively for impurity in the filtration aquatic prevents that impurity from blocking the pipeline.
The utility model discloses in, set up the level pressure device on terminal heat transfer device's wet return, when pressure is less than the setting value, supply water to terminal heat transfer device's wet return through the level pressure device to make pressure reach the setting value. When the pressure is greater than the set value, the pressure is released through the constant pressure device, so that the pressure reaches the set value, the pressure of the whole heat exchange system is constant, and the pressure instability of the system caused by sudden start and stop of equipment is prevented.
Drawings
FIG. 1: in the specific embodiment, the waste heat utilization system is based on an electric drive water source heat pump unit;
[ description of reference ]
A. A first bridge conduit; B. a second bridge conduit; 1. electrically driving the water source heat pump unit; 2. a primary pump; 3. a secondary pump; 4. a constant pressure device; 5. a terminal heat exchange device; 6. a residual heat water supply pipe; 7. a first residual hot water return pipe; 8. a second residual hot water return pipe; 9. a cooling tower; 10. a circulating water inlet pipe; 11. a circulating water return pipe; 12. a water return pipe of the terminal heat exchange device; 13. a water inlet pipe of the terminal heat exchange device; 14/15/16/17/18/19/20/21, electric gate valve; 22/23/24, electric butterfly valve; 25. a first automatic backwash filter; 26. a first temperature sensor; 27. a flow sensor; 28. a unit; 29. a first heat exchange means; 30. a second heat exchange means; 31. a first pipeline; 32. a second pipeline; 33. a third pipeline; 34. a fourth pipeline; 36. a water circulating pump; 37. a second automatic backwash filter; 38. a second temperature sensor; 39. a water collector.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
Referring to fig. 1, the embodiment provides a waste heat utilization system based on an electric drive water source heat pump unit, which includes a power plant circulating water system, an electric drive water source heat pump unit 1 and a terminal heat exchange device 5.
Specifically, a power plant circulating water system, a residual heat water supply pipe 6, an electrically driven water source heat pump unit 1 and a residual heat water return pipe 7 are sequentially connected end to form a first circulation loop. The terminal heat exchange device 5, the terminal heat exchange device water return pipe 12, the electric drive water source heat pump unit 1 and the terminal heat exchange device water inlet pipe 13 are sequentially connected end to form a second circulation loop. The electrically driven water source heat pump unit 1 comprises a first heat exchange device 29 and a second heat exchange device 30, wherein the first heat exchange device 29 and the second heat exchange device 30 are switched through a switching device, so that the first heat exchange device 29 and the second heat exchange device 30 are respectively switched into different circulation loops. During the heating period, the switching device connects the first heat exchange device 29 to the second circulation circuit and connects the second heat exchange device 30 to the first circulation circuit. The waste heat water of the power plant is delivered to the second heat exchange device 30 through the power plant circulating water system, and flows back to the power plant circulating water system after being cooled by the second heat exchange device 30, and the released heat is transmitted to the first heat exchange device 29. The circulating water of the terminal heat exchange device 5 is pumped into the first heat exchange device 29 from the terminal heat exchange device 5 through the primary pump 2, the circulating water of the terminal heat exchange device 5 absorbs the heat of the first heat exchange device 29 and then is heated, the circulating water is pumped into the terminal heat exchange device 5 through the secondary pump 3, the terminal heat exchange device 5 is arranged in a factory area or a residential area, the high-temperature circulating water in the terminal heat exchange device 5 exchanges heat with the indoor air of the factory area and the indoor air of the residential area, and therefore heating of the factory area or the residential area is achieved. During the cooling period, the switching device connects the second heat exchange device 30 to the second circulation circuit and the first heat exchange device 29 to the first circulation circuit. Correspondingly, high-temperature circulating water of the terminal heat exchange device 5 is pumped into the second heat exchange device 30 from the terminal heat exchange device 5 through the primary pump 2, and is pumped into the terminal heat exchange device 5 through the secondary pump 3 after being cooled by the second heat exchange device 30, and low-temperature circulating water in the terminal heat exchange device 5 exchanges heat with indoor air of a plant area or a residential area to absorb heat in the air, so that the cooling effect is achieved, and the purpose of refrigerating the plant area or the residential area is achieved. In the embodiment, the electrically driven water source heat pump unit 1 is selected, and the electric drive replaces the steam drive, so that the heat pump unit can be widely applied to southern regions of China, and the problem that the waste heat of thermal power plants in southern regions cannot be effectively utilized is solved. The electrically driven water source heat pump unit 1 realizes the switching between the heating mode and the refrigerating mode through the switching device, realizes the refrigeration in summer and realizes the heating in winter so as to adapt to the requirements in different seasons.
Further, the switching device in this embodiment includes a first bridge pipeline a and a second bridge pipeline B. The first bridge type pipeline A is connected to the first end of the electric drive water source heat pump unit 1, and the second bridge type pipeline B is connected to the second end of the electric drive water source heat pump unit 1. Wherein the first end is the residual heat water supply end of the electric drive water source heat pump unit 1, and the second end is the residual heat water return end of the electric drive water source heat pump unit 2. One end of the first bridge pipeline B is communicated with a circulating water system of a power plant through a waste heat water supply pipe 6, and the other end of the first bridge pipeline B is communicated with a terminal heat exchange device 5 through a terminal heat exchange device water inlet pipe 13. One end of the second bridge pipeline B is communicated with a circulating water system of the power plant through a waste heat water return pipe, and the other end of the second bridge pipeline B is communicated with the terminal heat exchange device 5 through a terminal heat exchange device water return pipe 12.
In particular, the first bridge circuit a comprises a first circuit 31 and a second circuit 32 connected in parallel, and the second bridge circuit B comprises a third circuit 33 and a fourth circuit 34 connected in parallel. The first pipeline 31 is provided at both ends thereof with a control valve 14 and a control valve 15, respectively, the second pipeline 32 is provided at both ends thereof with a control valve 16 and a control valve 17, respectively, the third pipeline 33 is provided at both ends thereof with a control valve 18 and a control valve 19, respectively, and the fourth pipeline 34 is provided at both ends thereof with a control valve 20 and a control valve 21, respectively. The first heat exchange device (29) and the second heat exchange device (30) are respectively added into different circulation loops by controlling the opening and the closing of the control valve. Correspondingly, the two ends of the second heat exchange device 30 are respectively communicated with the first pipeline 31 and the third pipeline 33, and the two ends of the first heat exchange device 29 are respectively communicated with the second pipeline 32 and the fourth pipeline 34. The control valve in this embodiment is preferably an electric gate valve, and the opening and closing of the electric gate valve are electrically controlled, so that the first heat exchanging device 29 and the second heat exchanging device 30 are connected into different circulation loops. The switching device has simple structure and is convenient to control.
The power plant circulating water system in the embodiment comprises a unit 28 and a cooling tower 9, wherein the cooling tower 9, a circulating water inlet pipe 10, the unit 28 and a circulating water return pipe 11 are sequentially connected end to form a circulating water loop, and the unit 28 is cooled. Wherein, the residual heat water supply pipe 6 is communicated with the circulating water inlet pipe 10, a circulating water pump 36 is arranged on the circulating water inlet pipe 10, and the circulating water is pumped into the residual heat water supply pipe 6 through the circulating water pump 36. The waste hot water return pipe comprises a first waste hot water return pipe 7 and a second waste hot water return pipe 8, the first waste hot water return pipe 7 is communicated with the circulating water return pipe 11, and the second waste hot water return pipe 8 is communicated with the cooling tower 9. The connection side of the waste heat water supply pipe 6 and the circulating water inlet pipe 10 is provided with an electric butterfly valve 22, the connection side of the first waste heat water return pipe 7 and the circulating water return pipe 11 is provided with an electric butterfly valve 23, and the connection side of the second waste heat water return pipe 8 and the cooling tower is provided with an electric butterfly valve 24. The electric control electric butterfly valve is opened and closed, when the lift of the circulating water pump is enough, the electric butterfly valve 23 is opened, the electric butterfly valve 24 is closed, and residual hot water in the residual hot water return pipe flows back to the circulating water return pipe 11. When the lift of the circulating water pump is insufficient, the electric butterfly valve 23 is closed, the electric butterfly valve 24 is opened, and the residual hot water in the residual hot water return pipe flows back to the water collecting tank of the cooling water tower.
Further, a first automatic backwashing filter 25 is arranged on the terminal heat exchange device water return pipe 12, and a first temperature sensor 26 and a flow sensor 27 are sequentially arranged between the first automatic backwashing filter 25 and the terminal heat exchange device 5. The residual heat water supply pipe 6 is provided with a second automatic backwashing filter 37, and a second temperature sensor 38 is provided between the residual heat water supply pipe 6 and the electric butterfly valve. The second automatic backwashing filter 37 is used for filtering impurities in the residual heat water supply pipe 6, and the first automatic backwashing filter 25 is used for filtering impurities in the terminal heat exchange device water return pipe 12, so that the residual heat water supply pipe 6 and the terminal heat exchange device water return pipe 12 are prevented from being blocked by the impurities, and later maintenance is facilitated.
Further, a constant pressure device 4 is further disposed between the first automatic backwashing filter 25 and the primary pump 2 in this embodiment, the constant pressure device 4 is used for setting the pressure of the waste heat utilization system, and the specific pressure value is set according to the specific conditions of the plant area and the living area. The use effect of the system is influenced by the fact that the system pressure is not constant due to volume expansion and contraction caused by the change of the water temperature of the heat exchange system, sudden start and stop of the equipment and the like. The constant pressure device 4 has an exhaust function and a water supplementing function, when the pressure is larger than a set value, gas in the pipeline is exhausted through an exhaust valve, and water in a water return pipe of the terminal heat exchange device 5 is exhausted into the tank body for pressure reduction, so that the pressure in the terminal heat exchange device 5 is the set value. When the pressure is less than the set value, the constant pressure pump pumps water from the automatic tank body for supplement so as to enable the pressure to reach the set value. Thereby making the pressure in the terminal heat exchange means 5 constant.
The electrically driven water source heat pump unit 1 in this embodiment is an apparatus capable of performing cooling and heating using water as a heat source or a cold source, and is an integrated apparatus integrating a first heat exchanging device 29, a compressor, and a second heat exchanging device 30, where the first heat exchanging device 29 is a condenser, and the second heat exchanging device 30 is an evaporator, and has cooling and heating functions. The specific working principle is as follows:
in the cooling mode, high pressure, high temperature refrigerant gas from the compressor enters the water/refrigerant condenser, discharges heat into the water to cool it into a high pressure liquid and raise the temperature of the water. The liquid enters the evaporator to be evaporated into low-pressure steam after being throttled and expanded into low-pressure liquid by the thermal expansion valve, and simultaneously absorbs the heat of air (water). The low-pressure refrigerant vapor enters the compressor again to be compressed into high-pressure gas, and the circulation is not performed. Chilled water required for a refrigerated environment is obtained in the evaporator.
In the heating mode, high-pressure and high-temperature refrigerant gas is pressed out from the compressor, enters the condenser and simultaneously discharges heat to be cooled into high-pressure liquid, is throttled and expanded by the thermal expansion valve to form low-pressure liquid, enters the evaporator and is evaporated into low-pressure steam, and the water is cooled by absorbing the heat in the water in the evaporation process. The low-pressure refrigerant vapor enters the compressor again to be compressed into high-pressure gas, and the circulation is not performed. The hot water required for the heating environment is obtained in the condenser.
The terminal heat exchange device 5 in this embodiment is a pipeline laid in an office building or a residential building of a factory, the pipeline is coiled and laid on indoor ground or wall, and water in the pipeline exchanges heat with indoor air, so that the purposes of heating and refrigerating are achieved. Correspondingly, a water collector 39 is arranged at the end of the pipeline, and water in the water collector 39 is pumped into the electrically driven water source heat pump unit 1 through the primary pump 2.
Adopt the electric drive heat pump set based on waste heat utilization system's of this embodiment heating and refrigerated specific work engineering do:
in the summer refrigeration working condition, when the original circulating water pump 36 has enough lift, the electric gate valves 15, 16, 19 and 20 and the electric butterfly valves 22 and 23 are opened, the electric gate valves 14, 17, 18 and 21 and the electric butterfly valves 24 are closed, circulating water in the terminal heat exchange device 5 is collected to the water collector 39, the circulating water is pressurized by the primary pump 22 and enters the electric drive water source heat pump unit 1, and circulating water in the terminal heat exchange device 5 is pumped into the terminal heat exchange device 5 by the secondary pump 33 after being subjected to heat exchange and temperature reduction by the electric drive heat pump unit 1, so that the effect of providing cold source refrigeration is achieved. At the moment, the residual hot water supply comes from the main machine circulating water inlet pipe 10, and the residual hot water enters the main machine circulating water return pipe 11 through the first residual hot water return pipe 7 after absorbing heat and raising temperature through the electrically driven heat pump unit 1. When the lift of the circulating water pump 36 is insufficient, the electric butterfly valve 23 is closed, the electric butterfly valve 24 is opened, and the residual hot water directly enters the lower end water collecting tank of the cooling tower 9 through the second residual hot water return pipe 8.
In the winter heating working condition, the electric gate valves 14, 17, 18 and 21 and the electric butterfly valves 22 and 24 are opened, and the electric gate valves 15, 16, 19 and 20 and the electric butterfly valve 23 are closed. Circulating water of the terminal heat exchange device 5 in the water collector 37 is pressurized by the primary pump 22 and enters the electric drive water source heat pump unit 1, and circulating water of the terminal heat exchange device 5 absorbs heat and is heated by the electric drive heat pump unit 1 and then is pumped into the terminal heat exchange device 5 by the secondary pump 33, so that a heat source heating effect is achieved. At the moment, the residual hot water is supplied from a main machine circulating water inlet pipe 10, and directly enters a collecting tank at the lower end of a cooling tower 9 through a residual hot water return pipe 7 after the residual hot water is subjected to heat exchange and temperature reduction through an electrically driven water source heat pump unit 1.
By adopting the waste heat utilization system of the electrically driven water source heat pump unit, a cold source with the temperature of 12 ℃/7 ℃ can be provided in summer, and a heat source with the temperature of 48 ℃/53 ℃ can be provided in winter. In the summer operation condition, the temperature of the residual hot water inlet of the electrically driven water source heat pump unit 1 is 33 ℃, the residual hot water is taken from a circulating water system of a power plant, when the lift of the circulating water pump 36 is enough, the residual hot water is connected to the circulating water return pipe 11 through the first residual hot water return pipe 7, and the return water temperature is about 38 ℃. When the lift of the circulating water pump 36 is insufficient, the residual hot water flows back to the lower end collecting tank of the cooling tower 9 through the residual hot water return pipe 8. Under the working condition of winter operation, the inlet temperature of the residual heat water of the electrically driven water source heat pump unit 1 is 22 ℃, the residual heat water is cooled by the electrically driven water source heat pump unit 1 and then flows back to the water collecting tank below the cooling tower 9, and the return water temperature is about 12 ℃. The electrically driven water source heat pump unit 1 utilizes a large amount of low-grade energy, improves the energy grade through lower cost, and meets the requirements of people on life and production.
The above, only be the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is familiar with the technical field of the present invention in the technical scope disclosed by the present invention, according to the technical solution of the present invention and the utility model, the concept of the present invention is equivalent to replace or change, and all covered in the protection scope of the present invention.
Claims (10)
1. A waste heat utilization system based on an electric drive water source heat pump unit is characterized by comprising a power plant circulating water system, the electric drive water source heat pump unit (1) and a terminal heat exchange device (5);
the power plant circulating water system and the electric drive water source heat pump unit (1) are connected end to end through pipelines to form a first circulating loop;
the terminal heat exchange device (5) is connected with the electrically-driven water source heat pump unit (1) end to end through a pipeline to form a second circulation loop;
the electric drive water source heat pump unit (1) comprises a first heat exchange device (29) and a second heat exchange device (30), the first heat exchange device (29) and the second heat exchange device (30) are switched through a switching device, and the switching device is in communication connection with a control center (35); wherein the content of the first and second substances,
said switching means selectively connects said first heat exchange means (29) to said second circulation circuit and said second heat exchange means (30) to said first circulation circuit, or connects said second heat exchange means (30) to said second circulation circuit and said first heat exchange means (29) to said first circulation circuit.
2. The waste heat utilization system based on the electrically driven water source heat pump unit as claimed in claim 1, wherein the switching device comprises a first bridge type pipeline (A) and a second bridge type pipeline (B);
the first bridge type pipeline (A) is connected to a first end of the electric drive water source heat pump unit (1), and the second bridge type pipeline (B) is connected to a second end of the electric drive water source heat pump unit (1);
the first end is the water supply end of the waste heat water, and the second end is the water return end of the waste heat water.
3. The waste heat utilization system based on the electrically driven water source heat pump unit as claimed in claim 2, wherein both ends of the first bridge pipeline (A) are respectively connected with a waste heat water supply pipe (6) and a terminal heat exchange device water inlet pipe (13);
the first bridge pipeline (A) is connected with the circulating water system of the power plant through the residual heat water supply pipe (6) and is connected with the terminal heat exchange device (5) through the terminal heat exchange device water inlet pipe (13);
both ends of the second bridge type pipeline (B) are respectively connected with a waste hot water return pipe and a terminal heat exchange device return pipe (12);
and the second bridge pipeline (B) is connected with the circulating water system of the power plant through the residual heat water return pipe, and is connected with the terminal heat exchange device (5) through the terminal heat exchange device water return pipe (12).
4. The waste heat utilization system based on the electrically driven water source heat pump unit is characterized in that the first bridge type pipeline (A) comprises a first pipeline (31) and a second pipeline (32) which are connected in parallel, and the second bridge type pipeline (B) comprises a third pipeline (33) and a fourth pipeline (34) which are connected in parallel;
control valves are respectively arranged at two ends of the first pipeline (31), the second pipeline (32), the third pipeline (33) and the fourth pipeline (34);
two ends of the first heat exchange device (29) are respectively communicated with the first pipeline (31) and the third pipeline (33), and two ends of the second heat exchange device (30) are respectively communicated with the second pipeline (32) and the fourth pipeline (34).
5. The waste heat utilization system based on the electrically driven water source heat pump unit as claimed in claim 4, wherein the control valve is an electric gate valve.
6. The waste heat utilization system based on the electrically driven water source heat pump unit is characterized in that the power plant circulating water system comprises a unit (28) and a cooling tower (9), wherein the cooling tower (9), a circulating water inlet pipe (10), the unit (28) and a circulating water return pipe (11) are sequentially connected end to end;
the residual heat water supply pipe (6) is communicated with the circulating water inlet pipe (10);
the waste heat water return pipe comprises a first waste heat water return pipe (7) and a second waste heat water return pipe (8), the first waste heat water return pipe (7) is communicated with the circulating water return pipe (11), and the second waste heat water return pipe (8) is communicated with the cooling tower (9).
7. The waste heat utilization system based on the electrically driven water source heat pump unit as claimed in claim 6, wherein the connection side of the waste heat water supply pipe (6) and the circulating water inlet pipe (10), the connection side of the first waste heat water return pipe (7) and the circulating water return pipe (11), and the connection side of the second waste heat water return pipe (8) and the cooling tower (9) are respectively provided with an electric butterfly valve.
8. The waste heat utilization system based on the electrically driven water source heat pump unit according to claim 7,
a first automatic backwashing filter (25) is arranged on the terminal heat exchange device water return pipe (12), and a first temperature sensor (26) and a flow sensor (27) are sequentially arranged between the first automatic backwashing filter (25) and the terminal heat exchange device (5);
a second automatic back-flushing filter (37) is arranged on the waste heat water supply pipe (6), and a second temperature sensor (38) is arranged between the waste heat water supply pipe (6) and the electric butterfly valve.
9. The waste heat utilization system based on the electrically driven water source heat pump unit as claimed in claim 8, characterized by further comprising a primary pump (2) and a secondary pump (3);
the primary pump (2) is arranged on the terminal heat exchange device water return pipe (12), and the secondary pump (3) is arranged on the terminal heat exchange device water inlet pipe (13);
a constant pressure device (4) is also arranged between the first automatic backwashing filter (25) and the primary pump (2).
10. The waste heat utilization system based on the electrically driven water source heat pump unit according to claim 1, characterized in that the electrically driven water source heat pump unit (1) is an integrated device and further comprises a compressor;
the first heat exchange device (29) is a condenser, and the second heat exchange device (30) is an evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022189453.7U CN213362920U (en) | 2020-09-29 | 2020-09-29 | Waste heat utilization system based on electrically-driven water source heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022189453.7U CN213362920U (en) | 2020-09-29 | 2020-09-29 | Waste heat utilization system based on electrically-driven water source heat pump unit |
Publications (1)
| Publication Number | Publication Date |
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| CN213362920U true CN213362920U (en) | 2021-06-04 |
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| CN202022189453.7U Active CN213362920U (en) | 2020-09-29 | 2020-09-29 | Waste heat utilization system based on electrically-driven water source heat pump unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN213362920U (en) |
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2020
- 2020-09-29 CN CN202022189453.7U patent/CN213362920U/en active Active
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Address after: Room 217-7, 1158 Xiehe Road, Changning District, Shanghai 200335 Patentee after: Guoneng Longyuan Lantian Energy Saving Technology Co.,Ltd. Shanghai Branch Address before: Room 217-7, 1158 Xiehe Road, Changning District, Shanghai 200335 Patentee before: Guodian Longyuan Energy Saving Technology Co.,Ltd. Shanghai Branch |