CN216408921U - Thermotechnical mixed compression cascade waste heat recovery heat pump steam generation system - Google Patents
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Abstract
The utility model relates to a thermotechnical hybrid compression step waste heat recovery heat pump steam generation system which comprises a step waste heat recovery system, a thermal compression system and a mechanical compression system, wherein the step waste heat recovery system is connected with the thermal compression system through a high-temperature evaporation water tank and a low-temperature evaporation water tank, and the thermal compression system is connected with the mechanical compression system through a high-temperature evaporation water tank, a water supplement heater and an overheating cooling water tank. The heat pump steam generation system realizes high-temperature and high-pressure steam from waste heat to meet the requirements of users by combining the step waste heat recovery, the thermal compression and the mechanical compression, and fully utilizes low-grade waste heat resources.
Description
Technical Field
The utility model relates to the technical field of heat pumps, in particular to a thermotechnical hybrid compression cascade waste heat recovery heat pump steam generation system.
Background
As an innovative energy-saving technology, the heat pump steam system is increasingly used to generate high-temperature high-pressure steam. For example, chinese patent application No. 201110170741.0 entitled "a heat pump steam engine" discloses a heat pump steam engine including a heat pump system, a plate heat exchanger connected to the heat pump system through a reversing valve, a fin heat exchanger having one end connected to the heat pump system through the reversing valve and the other end connected to the heat pump system through a first control device and a second control device, respectively, and a steam generation system connected to the plate heat exchanger.
In addition, the chinese patent application No. 201910411796.2, entitled "water-medium jet heat pump system for cascade waste heat recovery and operating method thereof", previously filed by the inventor, discloses a heat pump system which sufficiently recovers waste heat of a waste heat source at a high temperature section and a low temperature section by using a high pressure steam generation system and a low pressure steam generation system, effectively realizes cascade utilization of waste heat resources, reduces the usable temperature of the waste heat resources, expands the usable temperature range of the waste heat resources, and increases the usable amount of the waste heat resources.
Accordingly, there is a continuing need in the art for a heat pump steam generation system that is highly waste heat efficient and operates stably.
SUMMERY OF THE UTILITY MODEL
In order to compensate for the defects of the prior art, the application provides the thermotechnical hybrid compression cascade waste heat recovery heat pump steam generation system which is high in waste heat utilization rate and stable in operation. The heat pump steam generation system realizes high-temperature and high-pressure steam from waste heat to meet the requirements of users by combining the step waste heat recovery, the thermal compression and the mechanical compression, and fully utilizes low-grade waste heat resources.
In order to solve the above technical problem, the present application provides the following technical solutions.
In a first aspect, the present application provides a thermal hybrid compression cascade waste heat recovery heat pump steam generation system, which is characterized by comprising a cascade waste heat recovery system, a thermal compression system and a mechanical compression system;
the cascade waste heat recovery system comprises a high-temperature waste heat water inlet pipe, a high-temperature evaporation water tank, a low-temperature evaporation water tank and a low-temperature waste heat water outlet pipe which are sequentially connected, wherein a high-temperature evaporation spiral pipe is arranged in the high-temperature evaporation water tank, a low-temperature evaporation spiral pipe is arranged in the low-temperature evaporation water tank, and the high-temperature waste heat water inlet pipe, the high-temperature evaporation spiral pipe, the low-temperature evaporation spiral pipe and the low-temperature waste heat water outlet pipe form a one-way fluid flow path;
the hot compression system comprises a high-temperature evaporation water tank, a low-temperature evaporation water tank, an ejector pump, an overheating cooling water tank and a water supplementing heater, wherein the water supplementing heater is used for supplementing water to the high-temperature evaporation water tank;
the mechanical compression system comprises a high-temperature evaporation water tank, a circulating water replenishing pump, a water replenishing heater, an overheating cooling water tank and a steam compressor, wherein the high-temperature evaporation water tank, the circulating water replenishing pump, the water replenishing heater, the overheating cooling water tank and the steam compressor are sequentially connected to form a one-way fluid flow path;
wherein, step waste heat recovery system with hot compression system passes through high temperature evaporation water tank with low temperature evaporation water tank connects, hot compression system with mechanical compression system passes through high temperature evaporation water tank moisturizing heater with the connection of overheat cooling water tank.
In this embodiment, the low pressure steam is injected by the high pressure steam to increase the pressure of the low pressure steam, and the pressure of the finally supplied steam is between the high pressure and the low pressure, which may be referred to as medium pressure steam.
In an embodiment of the first aspect, the cascade waste heat recovery system further includes a high-temperature waste heat water outlet pipe, configured to output part of the high-temperature waste heat water in the high-temperature evaporation water tank.
In an embodiment of the first aspect, the thermal compression system further includes an expansion pipe disposed between the high-temperature evaporation water tank and the low-temperature evaporation water tank, and the expansion pipe is provided with an expansion valve for conveying water in the high-temperature evaporation water tank to the low-temperature evaporation water tank.
In one embodiment of the first aspect, in the thermal compression system, the desuperheating water tank replenishes water to the low-temperature evaporating water tank.
In an embodiment of the first aspect, in the thermal compression system, the ejector pump is in fluid communication with the desuperheating water tank through an ejector air outlet pipe, and an outlet of the ejector air outlet pipe is disposed below a liquid level of the desuperheating water tank.
In one embodiment of the first aspect, in the mechanical compression system, the water replenishment heater directly replenishes water to the water vapor compressor.
Compared with the prior art, the thermotechnical hybrid compression cascade waste heat recovery heat pump steam generation system has the beneficial effects that:
1. the cascade waste heat recovery system is used for fully utilizing heat energy in high-temperature waste heat, high-temperature high-pressure steam and steam with lower temperature and pressure are generated in a cascade mode, cascade recovery of the high-temperature waste heat is achieved, heat in a waste heat source can be recovered more fully, the utilization rate of low-grade waste heat is improved, consumption of primary energy is reduced, and therefore energy conservation and emission reduction are assisted, and early carbon neutralization is promoted.
2. The high-temperature high-pressure steam generated by the cascade waste heat recovery is utilized by the thermal compression system to thermally compress the steam with lower temperature and pressure to generate medium-pressure steam, so that the pressure of the steam with lower temperature and pressure is increased, the suction pressure of the 32-steam compressor is favorably increased, the energy efficiency of the whole system is improved, and the power consumption of the system is reduced.
3. Finally, the mechanical compression system further compresses the medium-pressure steam by using the steam compressor to raise the pressure and the temperature to generate steam with higher temperature and pressure, so that the use of a user is met, the mechanical compression efficiency is high, the stability is strong, the steam pressure and the temperature can be effectively improved, and the efficient and stable operation of the system is ensured.
4. The combination of cascade waste heat recovery, thermal compression and mechanical compression realizes the high-temperature and high-pressure steam from waste heat to meet the requirements of users, fully utilizes low-grade waste heat resources, and compared with the existing coal-fired and gas-fired boilers, the system only utilizes electric energy to provide steam, is more clean and environment-friendly, and compared with an electric boiler, the system recovers the waste heat to generate steam, and the electricity consumption and the energy consumption are greatly reduced.
Drawings
The present application may be better understood by describing embodiments thereof in conjunction with the following drawings, in which:
fig. 1 shows a schematic diagram of a thermal hybrid compression cascade waste heat recovery heat pump steam generation system according to an embodiment of the present application.
In the above drawings, the respective reference numerals have the following meanings:
11. a high-temperature waste heat water inlet pipe, 12, a high-temperature evaporation spiral pipe, 13, a low-temperature waste heat water inlet pipe, 14, a high-temperature waste heat water outlet pipe, 15, a first regulating valve, 16, a second regulating valve, 17, a low-temperature evaporation spiral pipe, 18, a low-temperature waste heat water outlet pipe, 19, a third regulating valve, 20, a high-temperature evaporation water tank, 21, an expansion valve, 22, an expansion pipe, 23, a low-temperature evaporation water tank, 24, a low-temperature steam inlet pipe, 25, a high-temperature steam inlet pipe, 26, an injection pump, 27, an injection outlet pipe, 28, an overheating cooling water tank, 29, a fourth regulating valve, 30, a low-temperature evaporation water tank return pipe, 31, an air suction pipe, 32, a steam compressor, 33, an exhaust pipe, 34, a circulating water replenishing pump, 35, a high-temperature evaporation water tank outlet pipe, 36, a water replenishing water heater, 37, an overheating cooling water tank replenishing pipe, 38, a fifth regulating valve, 39, a compressor water replenishing pipe, 40, a compressor, a first regulating valve, a second regulating valve, a fourth regulating valve, a, A sixth regulating valve, 41, a water inlet pipe of a water replenishing heater, and 42, a water replenishing inlet pipe of a high-temperature evaporation water tank.
Detailed Description
Unless otherwise defined, technical or scientific terms used herein in the specification and claims should have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
All numerical values recited herein as between the lowest value and the highest value are intended to mean all values between the lowest value and the highest value in increments of one unit when there is more than two units difference between the lowest value and the highest value.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1, the present application provides a thermal hybrid compression cascade waste heat recovery heat pump steam generation system. The thermotechnical hybrid compression cascade waste heat recovery heat pump steam generation system mainly comprises a cascade waste heat recovery system, a thermal compression system and a mechanical compression system. The step waste heat recovery system and the thermal compression system are connected with each other through a high-temperature evaporation water tank 20 and a low-temperature evaporation water tank 23. The high temperature evaporating water tank 20 is provided with a high temperature evaporating spiral pipe 12. The low-temperature evaporation water tank 23 is provided with a low-temperature evaporation spiral pipe 17, and the high-temperature evaporation spiral pipe 12 and the low-temperature evaporation spiral pipe 17 can realize the cascade recovery of waste heat. The thermal compression system and the mechanical compression system are connected through a high-temperature evaporation water tank 20, an overheating temperature reduction water tank 28 and a water replenishing heater 36.
In a specific embodiment, the step waste heat recovery system includes a high temperature waste heat inlet pipe 11, a high temperature evaporation spiral pipe 12, a low temperature waste heat inlet pipe 13, a high temperature waste heat outlet pipe 14, a first regulating valve 15, a second regulating valve 16, a low temperature evaporation spiral pipe 17, a low temperature waste heat outlet pipe 18, a third regulating valve 19, a high temperature evaporation water tank 20, and a low temperature evaporation water tank 23. The high-temperature waste heat water outlet pipe is connected with the low-temperature waste heat water inlet pipe and used for outputting part of high-temperature waste heat water from the high-temperature evaporation spiral pipe in the high-temperature evaporation water tank, and the first regulating valve is arranged on the high-temperature waste heat water outlet pipe. One end of the low-temperature waste heat water inlet pipe is communicated with the high-temperature evaporation spiral pipe, the other end of the low-temperature waste heat water inlet pipe is communicated with the low-temperature evaporation spiral pipe, and a second regulating valve is arranged on the low-temperature waste heat water inlet pipe. And a fourth regulating valve is arranged on the low-temperature waste heat water outlet pipe.
In a specific embodiment, the thermal compression system includes a high-temperature evaporation water tank 20, an expansion valve 21, an expansion pipe 22, a low-temperature evaporation water tank 23, a low-temperature steam intake pipe 24, a high-temperature steam intake pipe 25, an injection pump 26, an injection outlet pipe 27, an overheating and cooling water tank 28, a fourth regulating valve 29, a low-temperature evaporation water tank return pipe 30, a water supplement heater 36, a water supplement heater inlet pipe 41, and a high-temperature evaporation water tank water supplement inlet pipe 42. In this embodiment, the expansion pipe is disposed between the high-temperature evaporation water tank and the low-temperature evaporation water tank, and the expansion pipe is provided with an expansion valve for conveying water in the high-temperature evaporation water tank to the low-temperature evaporation water tank. In this embodiment, the low-temperature steam inlet pipe is configured to convey the low-temperature steam in the low-temperature evaporation water tank to the ejector pump, and the high-temperature steam inlet pipe is configured to convey the high-temperature steam in the high-temperature evaporation water tank to the ejector pump. The low-temperature evaporation water tank return pipe is used for conveying water in the overheating and cooling water tank to the low-temperature evaporation water tank, and a fifth valve is arranged on the low-temperature evaporation water tank return pipe. The moisturizing heater inlet tube be used for to the moisturizing heater moisturizing, high temperature evaporation water tank moisturizing inlet tube one end with moisturizing heating fluid intercommunication, the other end with high temperature evaporation water tank fluid intercommunication, be used for to high temperature evaporation water tank moisturizing.
In one embodiment, the mechanical compression system includes a high-temperature evaporation water tank 20, an overheating cooling water tank 28, a gas suction pipe 31, a water vapor compressor 32, a gas exhaust pipe 33, a circulating water replenishing pump 34, a high-temperature evaporation water tank water outlet pipe 35, a water replenishing heater 36, an overheating cooling water tank water replenishing pipe 37, a fifth regulating valve 38, a compressor water replenishing pipe 39 and a sixth regulating valve 40. In this embodiment, the suction pipe is used to input steam to the steam compressor, and the discharge pipe is used to output steam from the steam compressor. Compressor moisturizing pipe one end with moisturizing heater fluid intercommunication, one end with vapor compressor fluid intercommunication, just be provided with the fifth governing valve on the compressor moisturizing pipe, the fifth governing valve can be adjusted and flow into vapor compressor's fluid flow. The high temperature evaporation water tank the circulation moisturizing pump high temperature evaporation water tank outlet pipe the moisturizing heater overheat cooling water tank moisturizing pipe and overheat cooling water tank forms one-way fluid flow path, just be provided with the sixth governing valve on the overheat cooling water tank moisturizing pipe, the sixth governing valve can be adjusted and flow in the fluid flow of overheat cooling water tank.
The working principle of the thermotechnical hybrid compression cascade waste heat recovery heat pump steam generation system is as follows. During normal work, step waste heat recovery system is at first started working, and high temperature waste heat working medium flows into the high temperature evaporation spiral pipe 12 inside the high temperature evaporation water tank 20 through high temperature waste heat inlet tube 11, and is exothermic in the high temperature evaporation water tank 20 through high temperature evaporation spiral pipe 12, heats the high temperature water working medium inside the high temperature evaporation water tank 20, makes its evaporation produce high temperature high pressure steam under high temperature, realizes the first recycle of high temperature waste heat. The temperature of the high-temperature waste heat working medium after heat release is reduced, the high-temperature waste heat working medium flows through the low-temperature waste heat water inlet pipe 13 and flows into the low-temperature evaporation spiral pipe 17 in the low-temperature evaporation water tank 23 through the second regulating valve 16, heat is released in the low-temperature evaporation water tank 23 through the low-temperature evaporation spiral pipe 17, the water working medium with lower temperature in the low-temperature evaporation water tank 23 is heated, the water working medium is evaporated at lower temperature to generate steam with lower temperature and pressure, and secondary recycling of the high-temperature waste heat is achieved.
The temperature of the high-temperature waste heat working medium after heat release is reduced again, and the working medium flows through a third regulating valve 19 through a low-temperature waste heat water outlet pipe 18 and is discharged out of the system. In the low temperature waste heat inlet pipe 13, a high temperature waste heat outlet pipe 14 is connected between the high temperature evaporation spiral pipe 12 and a second regulating valve 16. The high-temperature waste heat water outlet pipe 14 is provided with the first regulating valve 15, and the high-temperature high-pressure steam and the steam with lower temperature and pressure which are respectively generated in the high-temperature evaporation water tank 20 and the low-temperature evaporation water tank 23 can be reasonably matched in the thermal compression system through the high-temperature waste heat which is discharged by the high-temperature waste heat water outlet pipe 14 and the first regulating valve 15 and is subjected to primary recovery.
Then the thermal compression system starts to work, and the make-up water flows into the make-up water heater 36 through the make-up water heater inlet pipe 41, is heated and then flows into the high-temperature evaporation water tank 20 through the high-temperature evaporation water tank make-up water inlet pipe 42. The high-temperature high-pressure steam generated by heating the high-temperature evaporation spiral pipe 12 in the high-temperature evaporation water tank 20 flows into the ejector pump 26 through the high-temperature steam inlet pipe 25 to eject the steam with lower temperature and pressure in the low-temperature evaporation water tank 23. Steam with lower temperature and pressure in the low-temperature evaporation water tank 23 flows into the ejector pump 26 through the low-temperature steam inlet pipe 24 and is thermally compressed by high-temperature and high-pressure steam in the high-temperature evaporation water tank 20. After compression, the two are mixed to form intermediate pressure steam with a certain degree of superheat. The intermediate pressure steam flows below the liquid level of the overheating and cooling water tank 28 through the ejection air outlet pipe 27, the intermediate temperature liquid water working medium in the overheating and cooling water tank 28 absorbs the overheating of the intermediate pressure steam and evaporates to increase the generated steam quantity, and the reduction of the overheating degree of the intermediate pressure steam is realized.
In a preferred embodiment, the medium temperature liquid water in the desuperheating water tank 28 can flow back to the low temperature evaporation water tank 23 through the low temperature evaporation water tank return pipe 30 via the fourth regulating valve 29, so as to compensate for the consumption of the low temperature water working medium in the low temperature evaporation water tank 23 due to evaporation. Meanwhile, the high-temperature water working medium in the high-temperature evaporation water tank 20 can flow through the expansion valve 21 through the expansion pipe 22 and flow into the low-temperature evaporation water tank 23, so that the consumption of the low-temperature water working medium in the low-temperature evaporation water tank 23 due to evaporation is compensated. The high temperature water in the high temperature evaporation water tank 20 expands as it flows through the expansion valve 21, achieving a reduction in temperature and pressure and producing a certain amount of steam at a lower temperature and pressure.
Finally, the mechanical compression system starts to work, the intermediate pressure steam in the desuperheating water tank 28 is sucked and compressed by the steam compressor 32 through the suction pipe 31, and the steam with higher temperature and pressure is generated and then supplied to the user through the exhaust pipe 33. In the process that the water vapor compressor 32 compresses the intermediate pressure steam, the high-temperature water working medium in the high-temperature evaporation water tank 20 is sent into the water supplementing heater 36 by the circulating water supplementing pump 34 through the high-temperature evaporation water tank water outlet pipe 35, and is used for heating the supplementing water from the water supplementing heater water inlet pipe 41, so that the temperature of the high-temperature water working medium is reduced. Part of the cooled high-temperature water working medium flows through a sixth adjusting valve 40 through an overheated cooling water tank water replenishing pipe 37 and is sent into the overheated cooling water tank 28. Preferably, part of the cooled high-temperature water is sent into the compression cavity of the water vapor compressor 32 through a compressor water replenishing pipe 39 connected to the superheated cooling water tank water replenishing pipe 37 and passing through a fifth regulating valve 38, so that the superheated generated by the compression of the intermediate pressure steam by the water vapor compressor 32 is absorbed in the compression cavity, the temperature of final exhaust is reduced, and the safe and stable operation of the unit is ensured.
In the system, the high-temperature evaporation water tank 20, the low-temperature evaporation water tank 23 and the overheating and cooling water tank 28 not only have the function of generating steam, but also are storage bodies of water working media and steam. As will be understood by those skilled in the art, the high temperature evaporating coil and the water medium in the high temperature evaporating water tank are separated from each other. In other words, the water medium does not penetrate into the high temperature evaporating coil. Similarly, the low temperature evaporating coil and the water medium in the low temperature evaporating water tank are separated from each other.
Although the thermotechnical hybrid compression cascade waste heat recovery heat pump steam generation system of the present application is described above in connection with waste heat, it can be understood by those skilled in the art that the heat source of the heat pump steam generation system may be any one or more of waste heat, solar energy, wind energy, geothermal energy, and air.
In the application, the high-temperature evaporation water tank 20, the high-temperature evaporation spiral pipe 12, the low-temperature evaporation water tank 23 and the low-temperature evaporation spiral pipe 17 are used for realizing the step recovery of high-temperature waste heat, so that the heat in a waste heat source can be more fully recovered, the utilization rate of low-grade waste heat is improved, and the consumption of primary energy is reduced, thereby assisting in energy conservation and emission reduction and promoting the early implementation of carbon neutralization.
In addition, the high-temperature and high-pressure steam generated by the cascade waste heat recovery is utilized by the ejector pump to thermally compress the steam with lower temperature and pressure to generate medium-pressure steam, so that the pressure of the steam with lower temperature and pressure is increased, the suction pressure of the steam compressor 32 is favorably increased, the energy efficiency of the whole system is improved, and the power consumption of the system is reduced.
In addition, the steam compressor 32 further compresses the medium-pressure steam by mechanical compression, boosts the pressure and raises the temperature to generate steam with higher temperature and pressure, so that the use of a user is met, the mechanical compression efficiency is high, the stability is strong, the steam pressure and the temperature can be effectively improved, and the efficient and stable operation of the system is ensured.
The combination of cascade waste heat recovery, thermal compression and mechanical compression realizes the high-temperature and high-pressure steam from waste heat to meet the requirements of users, fully utilizes low-grade waste heat resources, and compared with the existing coal-fired and gas-fired boilers, the system only utilizes electric energy to provide steam, is more clean and environment-friendly, and compared with an electric boiler, the system recovers the waste heat to generate steam, and the electricity consumption and the energy consumption are greatly reduced.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A thermotechnical hybrid compression cascade waste heat recovery heat pump steam generation system is characterized by comprising a cascade waste heat recovery system, a thermal compression system and a mechanical compression system;
the cascade waste heat recovery system comprises a high-temperature waste heat water inlet pipe, a high-temperature evaporation water tank, a low-temperature evaporation water tank and a low-temperature waste heat water outlet pipe which are sequentially connected, wherein a high-temperature evaporation spiral pipe is arranged in the high-temperature evaporation water tank, a low-temperature evaporation spiral pipe is arranged in the low-temperature evaporation water tank, and the high-temperature waste heat water inlet pipe, the high-temperature evaporation spiral pipe, the low-temperature evaporation spiral pipe and the low-temperature waste heat water outlet pipe form a one-way fluid flow path;
the hot compression system comprises a high-temperature evaporation water tank, a low-temperature evaporation water tank, an ejector pump, an overheating cooling water tank and a water supplementing heater, wherein the water supplementing heater is used for supplementing water to the high-temperature evaporation water tank;
the mechanical compression system comprises a high-temperature evaporation water tank, a circulating water replenishing pump, a water replenishing heater, an overheating cooling water tank and a steam compressor, wherein the high-temperature evaporation water tank, the circulating water replenishing pump, the water replenishing heater, the overheating cooling water tank and the steam compressor are sequentially connected to form a one-way fluid flow path;
wherein, step waste heat recovery system with hot compression system passes through high temperature evaporation water tank with low temperature evaporation water tank connects, hot compression system with mechanical compression system passes through high temperature evaporation water tank moisturizing heater with the connection of overheat cooling water tank.
2. A thermal hybrid compression cascade waste heat recovery heat pump steam generation system as claimed in claim 1, wherein the cascade waste heat recovery system further comprises a high temperature waste heat water outlet pipe for outputting the high temperature waste heat water in the high temperature evaporation water tank.
3. A thermotechnical hybrid compression cascade waste heat recovery heat pump steam generation system as recited in claim 1, further comprising an expansion pipe disposed between the high-temperature evaporation water tank and the low-temperature evaporation water tank, wherein the expansion pipe is provided with an expansion valve for conveying water in the high-temperature evaporation water tank to the low-temperature evaporation water tank.
4. A thermal hybrid compression step waste heat recovery heat pump steam generation system as defined in any one of claims 1 to 3, wherein in the thermal compression system the desuperheating water tank replenishes the low temperature evaporation water tank.
5. A thermal mixing compression cascade waste heat recovery heat pump steam generation system as claimed in any one of claims 1 to 3, wherein in the thermal compression system, the ejector pump is in fluid communication with the desuperheating water tank through an ejector air outlet pipe, and an outlet of the ejector air outlet pipe is arranged below the liquid level of the desuperheating water tank.
6. A thermal hybrid compression step waste heat recovery heat pump steam generation system as claimed in any one of claims 1 to 3, wherein in the mechanical compression system, the make-up water heater directly adds water to the water vapor compressor.
7. The thermal hybrid compression cascade waste heat recovery heat pump steam generation system of claim 1, wherein the cascade waste heat recovery system comprises a high-temperature waste heat inlet pipe, a high-temperature evaporation spiral pipe, a low-temperature waste heat inlet pipe, a high-temperature waste heat outlet pipe, a first regulating valve, a second regulating valve, a low-temperature evaporation spiral pipe, a low-temperature waste heat outlet pipe, a third regulating valve, a high-temperature evaporation water tank, and a low-temperature evaporation water tank;
the high-temperature waste heat water outlet pipe is used for outputting high-temperature waste heat water in the high-temperature evaporation water tank, and the first regulating valve is arranged on the high-temperature waste heat water outlet pipe;
one end of the low-temperature waste heat water inlet pipe is communicated with the high-temperature evaporation spiral pipe in a fluid mode, the other end of the low-temperature waste heat water inlet pipe is communicated with the low-temperature evaporation spiral pipe in a fluid mode, and a second adjusting valve is arranged on the low-temperature waste heat water inlet pipe;
and a fourth regulating valve is arranged on the low-temperature waste heat water outlet pipe.
8. The thermal mixing compression cascade waste heat recovery heat pump steam generation system of claim 7, wherein the thermal compression system comprises a high-temperature evaporation water tank, an expansion valve, an expansion pipe, a low-temperature evaporation water tank, a low-temperature steam inlet pipe, a high-temperature steam inlet pipe, an ejector pump, an ejector air outlet pipe, an overheating cooling water tank, a fourth regulating valve, a low-temperature evaporation water tank water return pipe, a water supplementing heater water inlet pipe and a high-temperature evaporation water tank water supplementing water inlet pipe;
the expansion pipe is arranged between the high-temperature evaporation water tank and the low-temperature evaporation water tank, and an expansion valve is arranged on the expansion pipe and used for conveying water in the high-temperature evaporation water tank to the low-temperature evaporation water tank;
the low-temperature steam inlet pipe is used for conveying low-temperature steam in the low-temperature evaporation water tank to the ejector pump, and the high-temperature steam inlet pipe is used for conveying high-temperature steam in the high-temperature evaporation water tank to the ejector pump;
the low-temperature evaporation water tank water return pipe is used for conveying water in the overheating and cooling water tank to the low-temperature evaporation water tank, and a fifth valve is arranged on the low-temperature evaporation water tank water return pipe;
the moisturizing heater inlet tube be used for to the moisturizing heater moisturizing, high temperature evaporation water tank moisturizing inlet tube one end with moisturizing heating fluid intercommunication, the other end with low temperature evaporation water tank fluid intercommunication is used for to high temperature evaporation water tank moisturizing.
9. The thermal mixed compression cascade waste heat recovery heat pump steam generation system as claimed in claim 8, wherein the mechanical compression system comprises a high-temperature evaporation water tank, an overheating cooling water tank, an air suction pipe, a steam compressor, an exhaust pipe, a circulating water replenishing pump, a high-temperature evaporation water tank water outlet pipe, a water replenishing heater, an overheating cooling water tank water replenishing pipe, a fifth regulating valve, a compressor water replenishing pipe and a sixth regulating valve;
the air suction pipe is used for inputting steam to the water vapor compressor, and the air exhaust pipe is used for outputting steam from the water vapor compressor;
one end of the compressor water replenishing pipe is communicated with the water replenishing heater in a fluid mode, the other end of the compressor water replenishing pipe is communicated with the water vapor compressor in a fluid mode, and a fifth adjusting valve is arranged on the compressor water replenishing pipe;
the high temperature evaporation water tank the circulation moisturizing pump high temperature evaporation water tank outlet pipe the moisturizing heater overheat cooling water tank moisturizing pipe and overheat cooling water tank forms one-way fluid flow path, just be provided with the sixth governing valve on the overheat cooling water tank moisturizing pipe.
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| CN202123298402.9U CN216408921U (en) | 2021-12-24 | 2021-12-24 | Thermotechnical mixed compression cascade waste heat recovery heat pump steam generation system |
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