CN211695087U - Steam and hot water combined heat supply pump device - Google Patents
Steam and hot water combined heat supply pump device Download PDFInfo
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- CN211695087U CN211695087U CN201922307942.5U CN201922307942U CN211695087U CN 211695087 U CN211695087 U CN 211695087U CN 201922307942 U CN201922307942 U CN 201922307942U CN 211695087 U CN211695087 U CN 211695087U
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Abstract
The utility model relates to the technical field of heating, and discloses a steam-hot water combined supply heat pump device, which comprises a carbon dioxide heat pump system and a steam-hot water combined supply system which are coupled by the heat exchange of an air cooler; the carbon dioxide heat pump system comprises an expander, wherein a heat release side outlet of the air cooler is connected with an inlet of the expander, and an outlet of the expander is connected with a heat release side inlet of the air cooler; the steam and hot water combined supply system comprises a water supply pump, a flash tank and a steam compressor, wherein the water supply pump is connected with an inlet of the flash tank through a heat absorption side of the air cooler; the flash tank comprises a hot water outlet and a steam outlet connected with an inlet of the water vapor compressor; the expander is in transmission connection with the water vapor compressor through a transmission shaft. The utility model provides a device, phase transition latent heat that can make full use of carbon dioxide cycle working medium provides steam and hot water to the expansion work when effectively retrieving the throttle of supercritical carbon dioxide through the expander drives the vapor compression ware and rotates, improves heat pump efficiency, makes the device more clean environmental protection.
Description
Technical Field
The utility model relates to a heat production technical field especially relates to a steam and hot water allies oneself with heat supply pump device.
Background
High-temperature water vapor is the most commonly used heat medium in industries such as industry, agriculture, commerce, medicine, food and the like. At present, high-temperature steam is mainly generated through an oil-fired and coal-fired boiler, so that the energy consumption is high, and the environmental pollution is also high. With the increasing promotion of ecological civilization construction, the traditional oil-fired and coal-fired boiler is necessarily eliminated, so that the development and utilization of clean energy, such as electric power and the like, are favored by heat energy users.
The carbon dioxide heat pump utilizes carbon dioxide as a circulating working medium, and can generate a large amount of high-quality heat energy at a low power cost by fully utilizing the phase change latent heat of the carbon dioxide circulating working medium. How to further improve the efficiency of the carbon dioxide heat pump is a problem to be researched and solved urgently.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a steam and hot water allies oneself with and supplies heat pump device for promote the efficiency of carbon dioxide heat pump.
The embodiment of the utility model provides a steam and hot water combined supply heat pump device, which comprises a carbon dioxide heat pump system and a steam and hot water combined supply system which are coupled by the heat exchange of an air cooler;
the carbon dioxide heat pump system comprises an expander, wherein a heat release side outlet of the air cooler is connected with an inlet of the expander, and an outlet of the expander is connected with a heat release side inlet of the air cooler; the steam and hot water combined supply system comprises a water feeding pump, a flash tank and a steam compressor, wherein the water feeding pump is connected with an inlet of the flash tank through a heat absorption side of the air cooler; the flash tank comprises a hot water outlet and a steam outlet connected with an inlet of the water vapor compressor; the expansion machine is in transmission connection with the water vapor compressor through a transmission shaft.
The steam and hot water combined supply system further comprises a water replenishing pump, and a water outlet of the water replenishing pump is connected with an inlet of the steam compressor.
The carbon dioxide heat pump system further comprises a carbon dioxide compressor and an evaporator, the carbon dioxide compressor, the air cooler, the expander and the evaporator are sequentially connected, and an outlet of the evaporator is connected with an inlet of the carbon dioxide compressor.
Wherein the carbon dioxide heat pump system further comprises a liquid reservoir and a gas-liquid separator;
the inlet of the liquid storage device is connected with the outlet of the expansion machine, the liquid storage device comprises a gas path outlet and a liquid path outlet, the gas path outlet is connected with the inlet of the carbon dioxide compressor, the liquid path outlet passes through the evaporator and is connected with the inlet of the gas-liquid separator, and the outlet of the gas-liquid separator is connected with the inlet of the carbon dioxide compressor.
The carbon dioxide heat pump system further comprises a heat regenerator, a heat release side outlet of the air cooler is connected with an inlet of the expander through a super-cold side of the heat regenerator, and an outlet of the evaporator is connected with an inlet of the carbon dioxide compressor through a super-hot side of the heat regenerator.
The gas circuit outlet is provided with a pressure reducing valve, and the outlet of the gas-liquid separator is provided with a first one-way valve.
And a second one-way valve is arranged between the carbon dioxide compressor and the air cooler.
Wherein an oil separator is arranged between the carbon dioxide compressor and the air cooler.
The embodiment of the utility model provides a steam and hot water allies oneself with heat pump device, carbon dioxide heat pump system use carbon dioxide as cycle fluid, and phase transition latent heat that can make full use of carbon dioxide cycle fluid to less electric power cost produces a large amount of high-quality heat energy. The carbon dioxide circulating working medium after heat release in the air cooler is in a supercritical state, the supercritical carbon dioxide with certain pressure and temperature is subjected to adiabatic expansion in the expander to impact an impeller of the expander, potential energy and kinetic energy of the supercritical carbon dioxide are converted into kinetic energy of the impeller to drive a rotating shaft of the expander to rotate, so that the expander effectively recovers expansion work during throttling of the supercritical carbon dioxide, the expander is connected with the water vapor compressor through a transmission shaft, and the transmission shaft can transmit the rotation of the rotating shaft of the expander to the water vapor compressor to drive the water vapor compressor to rotate, so that the efficiency of a carbon dioxide heat pump system is improved, the power consumption of the water vapor compressor is reduced, the energy utilization effect is improved, and the device is cleaner and more environment-friendly. When the water vapor compressor operates, negative pressure is generated in the flash tank, and hot water in the flash tank generates water vapor in a negative pressure environment and enters the water vapor compressor; the vapor is compressed by a vapor compressor to increase enthalpy into high-temperature vapor with certain pressure, and the vapor compressor can provide temperature rise of 20-60 ℃. The steam compressor not only improves the temperature and the yield of the steam, but also the boosted steam is convenient to convey to a heat user. The hot water at the bottom of the flash tank can be provided for users with hot water requirements, so that the device can provide steam or hot water for different users at the same time, low-quality heat in the hot water is fully and effectively utilized, and the application scene of the device is expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a steam and hot water combined heat pump device provided by an embodiment of the present invention;
in the figure: 1. an air cooler; 2. an expander; 3. a feed pump; 4. a drive shaft; 5. a carbon dioxide compressor; 6. a reservoir; 7. an evaporator; 8. a gas-liquid separator; 9. a pressure reducing valve; 10. a first check valve; 11. a second one-way valve; 12. an oil separator; 13. a heat regenerator; 14. a flash tank; 15. a water vapor compressor; 16. and (5) a water replenishing pump.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
In the description of the present invention, the terms "plurality", and "plural" mean two or more unless otherwise specified.
As shown in fig. 1, an embodiment of the present invention provides a steam-hot water combined heat pump device, which includes a carbon dioxide heat pump system and a steam-hot water combined heat pump system. The carbon dioxide heat pump system and the steam and hot water combined supply system are in heat exchange coupling through the air cooler 1; the carbon dioxide heat pump system comprises an expander 2, wherein the outlet of the heat release side of the air cooler 1 is connected with the inlet of the expander 2, and the outlet of the expander 2 is connected with the inlet of the heat release side of the air cooler 1; the steam and hot water combined supply system comprises a water supply pump 3, a flash tank 14 and a water vapor compressor 15, wherein the water supply pump 3 is connected with an inlet of the flash tank 14 through a heat absorption side of the air cooler 1; the flash tank 14 comprises a hot water outlet and a steam outlet connected with an inlet of a water vapor compressor 15; the expansion machine 2 is in transmission connection with the water vapor compressor 15 through a transmission shaft 4.
The embodiment of the utility model provides a steam and hot water allies oneself with heat pump device, carbon dioxide heat pump system use carbon dioxide as cycle fluid, and phase transition latent heat that can make full use of carbon dioxide cycle fluid to less electric power cost produces a large amount of high-quality heat energy. The air cooler 1 comprises a heat releasing side through which carbon dioxide circulating working medium flows and a heat absorbing side through which cooling water flows, the carbon dioxide circulating working medium transfers heat to the cooling water in the steam and hot water combined supply system when passing through the air cooler 1 under the heat exchange effect of the air cooler 1, and the cooling water enters the flash tank 14 after being heated at the heat absorbing side of the air cooler 1.
The carbon dioxide circulating working medium after heat release in the air cooler 1 is in a supercritical state, the supercritical carbon dioxide with certain pressure and temperature is subjected to adiabatic expansion in the expander 2 to impact an impeller of the expander 2, potential energy and kinetic energy of the supercritical carbon dioxide are converted into kinetic energy of the impeller to drive a rotating shaft of the expander 2 to rotate, so that the expander 2 effectively recovers expansion work during throttling of the supercritical carbon dioxide, the expander 2 is connected with the steam compressor 15 through a transmission shaft 4, and the transmission shaft 4 can transmit the rotation of the rotating shaft of the expander 2 to the steam compressor 15 to drive the steam compressor 15 to rotate, so that the efficiency of a carbon dioxide heat pump system is improved, the power consumption of the steam compressor 15 is reduced, the energy utilization effect is improved, and the device is cleaner and more environment-friendly.
The cooling water can absorb heat at the heat absorption side of the air cooler 1 and is heated to about 90 ℃ and enters the flash tank 14; when the water vapor compressor 15 operates, negative pressure is generated in the flash tank 14, and hot water in the flash tank 14 generates water vapor in a negative pressure environment and enters the water vapor compressor 15; the enthalpy of the steam is increased by the compression of the steam compressor 15 to form high-temperature steam with certain pressure at 100-150 ℃, the temperature rise of the steam compressor 15 can be 20-60 ℃, and the temperature and the yield of the steam can be improved by the steam compressor 15. The hot water at the bottom of the flash tank 14 can be provided to users with hot water demands, so that the device can provide steam or hot water for different users at the same time, the low-quality heat in the hot water is fully and effectively utilized, and the application scene of the device is expanded.
In one embodiment, the steam-hot water combined supply system further comprises a water replenishing pump 16, and a water outlet of the water replenishing pump 16 is connected with an inlet of the water vapor compressor 15. The water replenishing pump 16 can not only lower the exhaust temperature of the steam compressor 15, reduce the degree of superheat and increase the steam amount, but also play roles in lubrication and sealing by spraying water. When hot water supply is not needed, the hot water outlet of the flash tank 14 can be connected with the water inlet of the water replenishing pump 16, so that the hot water at the bottom of the flash tank 14 serves as a water replenishing source, heat in water can be utilized to the maximum extent, and in addition, the pressure ratio of the water vapor compressor 15 can be reduced, and energy consumption can be reduced due to the fact that the water replenishing temperature is high.
In a particular embodiment, the carbon dioxide heat pump system further comprises a carbon dioxide compressor 5 and an evaporator 7. The carbon dioxide compressor 5, the air cooler 1, the expander 2 and the evaporator 7 are connected in sequence, and the outlet of the evaporator 7 is connected with the inlet of the carbon dioxide compressor 5. The carbon dioxide circulating working medium is in a high-temperature and high-pressure supercritical state after being compressed by the carbon dioxide compressor 5, enters the air cooler 1 to release heat and supply cooling water, the supercritical carbon dioxide after releasing heat enters the expansion machine 2 to be expanded and throttled and output expansion work, then the liquid carbon dioxide enters the evaporator 7 to absorb heat and evaporate, and finally enters the carbon dioxide compressor 5 again to complete heat pump circulation. The carbon dioxide compressor 5 may be operated at a frequency between 0-50 Hz.
In a particular embodiment, the carbon dioxide heat pump system further comprises an accumulator 6 and a gas-liquid separator 8. The import of reservoir 6 and the exit linkage of expander 2, reservoir 6 include gas circuit export and liquid way export, and the gas circuit export is connected with carbon dioxide compressor 5's access, and liquid way export is through the access linkage of evaporimeter 7 with vapour and liquid separator 8, and vapour and liquid separator 8's export is connected with carbon dioxide compressor 5's access. The carbon dioxide circulating working medium is in a gas-liquid two-phase mixed state after being expanded and throttled in the expander 2, and after entering the liquid storage device 6 through the inlet of the liquid storage device 6, the liquid carbon dioxide circulating working medium enters the evaporator 7 through the liquid path outlet below the liquid storage device 6 to absorb heat and evaporate and enters the gas-liquid separator 8; an outlet of the gas path of the liquid storage device 6 and an outlet above the gas-liquid separator 8 are both connected with an inlet of the carbon dioxide compressor 5.
Further, in order to stabilize the inlet pressure of the carbon dioxide compressor 5, a pressure reducing valve 9 is arranged at the gas path outlet of the liquid accumulator 6; the outlet of the gas-liquid separator 8 is provided with a first one-way valve 10, and a second one-way valve 11 may be provided between the carbon dioxide compressor 5 and the air cooler 1 to prevent the back blocking of the gas. In addition, in order to ensure safe and efficient operation of the equipment, an oil separator 12 may be provided between the carbon dioxide compressor 5 and the air cooler 1 to separate the lubricating oil discharged from the carbon dioxide compressor 5 along with the carbon dioxide circulating medium.
In a specific embodiment, the carbon dioxide heat pump system further comprises a regenerator 13, the regenerator 13 comprises a super-cold side and a super-hot side, an outlet of the heat-releasing side of the air cooler 1 is connected with an inlet of the expander 2 through the super-cold side of the regenerator 13, and an outlet of the evaporator 7 is connected with an inlet of the carbon dioxide compressor 5 through the super-hot side of the regenerator 13. The heat regenerator 13 is arranged to perform a supercooling function on the outlet of the air cooler 1 and a superheating function on the inlet of the carbon dioxide compressor 5 on the one hand, so that the coefficient of performance (COP) of the carbon dioxide heat pump system is improved, and the energy loss is reduced.
Can see by above embodiment, the utility model provides a steam and hot water allies oneself with heat pump device, carbon dioxide heat pump system use carbon dioxide as cycle fluid, and the latent heat of phase change that can make full use of carbon dioxide cycle fluid produces a large amount of high-quality heat energy with less electric power cost. The carbon dioxide circulating working medium after heat release in the air cooler 1 is in a supercritical state, the supercritical carbon dioxide with certain pressure and temperature is subjected to adiabatic expansion in the expander 2 to impact an impeller of the expander 2, potential energy and kinetic energy of the supercritical carbon dioxide are converted into kinetic energy of the impeller to drive a rotating shaft of the expander 2 to rotate, so that the expander 2 effectively recovers expansion work during throttling of the supercritical carbon dioxide, the expander 2 is connected with the steam compressor 15 through a transmission shaft 4, and the transmission shaft 4 can transmit the rotation of the rotating shaft of the expander 2 to the steam compressor 15 to drive the steam compressor 15 to rotate, so that the efficiency of a carbon dioxide heat pump system is improved, the power consumption of the steam compressor 15 is reduced, the energy utilization effect is improved, and the device is cleaner and more environment-friendly. When the water vapor compressor 15 operates, negative pressure is generated in the flash tank 14, and hot water in the flash tank 14 generates water vapor in a negative pressure environment and enters the water vapor compressor 15; the vapor is compressed by the vapor compressor 15 to increase enthalpy into high-temperature vapor with certain pressure, and the vapor compressor 15 can provide temperature rise of 20-60 ℃. The steam compressor 15 not only increases the temperature and yield of the steam, but also the boosted steam is convenient for delivery to the heat consumer. The hot water at the bottom of the flash tank 14 can be provided to users with hot water demands, so that the device can provide steam or hot water for different users at the same time, the low-quality heat in the hot water is fully and effectively utilized, and the application scene of the device is expanded.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A steam-hot water combined supply heat pump device is characterized by comprising a carbon dioxide heat pump system and a steam-hot water combined supply system which are in heat exchange coupling through an air cooler;
the carbon dioxide heat pump system comprises an expander, wherein a heat release side outlet of the air cooler is connected with an inlet of the expander, and an outlet of the expander is connected with a heat release side inlet of the air cooler; the steam and hot water combined supply system comprises a water feeding pump, a flash tank and a steam compressor, wherein the water feeding pump is connected with an inlet of the flash tank through a heat absorption side of the air cooler; the flash tank comprises a hot water outlet and a steam outlet connected with an inlet of the water vapor compressor; the expansion machine is in transmission connection with the water vapor compressor through a transmission shaft.
2. The combined steam and hot water heat pump device according to claim 1, wherein the combined steam and hot water system further comprises a water replenishing pump, and a water outlet of the water replenishing pump is connected with an inlet of the steam compressor.
3. The steam-water combined heat pump device according to claim 1, wherein the carbon dioxide heat pump system further comprises a carbon dioxide compressor and an evaporator, the carbon dioxide compressor, the air cooler, the expander and the evaporator are connected in sequence, and an outlet of the evaporator is connected to an inlet of the carbon dioxide compressor.
4. The steam-hot water cogeneration heat pump apparatus of claim 3, wherein said carbon dioxide heat pump system further comprises an accumulator and a gas-liquid separator;
the inlet of the liquid storage device is connected with the outlet of the expansion machine, the liquid storage device comprises a gas path outlet and a liquid path outlet, the gas path outlet is connected with the inlet of the carbon dioxide compressor, the liquid path outlet passes through the evaporator and is connected with the inlet of the gas-liquid separator, and the outlet of the gas-liquid separator is connected with the inlet of the carbon dioxide compressor.
5. The steam-water combined heat pump device according to claim 3, wherein the carbon dioxide heat pump system further comprises a regenerator, an outlet of a heat release side of the air cooler is connected with an inlet of the expander through a super-cold side of the regenerator, and an outlet of the evaporator is connected with an inlet of the carbon dioxide compressor through a super-hot side of the regenerator.
6. The steam-hot water combined supply heat pump device according to claim 4, wherein the gas path outlet is provided with a pressure reducing valve, and the outlet of the gas-liquid separator is provided with a first check valve.
7. The combined steam and water heat pump device according to claim 3, wherein a second check valve is provided between the carbon dioxide compressor and the air cooler.
8. The steam-water combined heat pump device according to claim 3, wherein an oil separator is provided between the carbon dioxide compressor and the air cooler.
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| CN201922307942.5U CN211695087U (en) | 2019-12-19 | 2019-12-19 | Steam and hot water combined heat supply pump device |
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| CN201922307942.5U CN211695087U (en) | 2019-12-19 | 2019-12-19 | Steam and hot water combined heat supply pump device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023249815A1 (en) * | 2022-06-19 | 2023-12-28 | Yiding Cao | Air-water thermal power plants |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023249815A1 (en) * | 2022-06-19 | 2023-12-28 | Yiding Cao | Air-water thermal power plants |
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