Stepped low-temperature steam multi-layer cyclic utilization process and system

Abstract

The invention discloses a stepped low-temperature steam multi-layer cyclic utilization process and system, and relates to the technical field of steam utilization, steam generated by boiler heat passes through a pipeline I, when a temperature value detected by a thermometer II is greater than a set value, the steam enters a steam generator through the pipeline I and a flow valve I, and the steam generator generates power. When the temperature measured by a second thermometer is lower than a set value, water vapor enters a heat exchange chamber in a first heat storage box through a first pipeline, a fifth flow valve, a sixth pipeline and a first quick insertion pipe, and heat is transferred to the first heat storage box, the second heat storage box and a third heat storage box to be stored in sequence; therefore, high-temperature steam can be reasonably heated and then fed into the steam generator again for power generation, heat of low-temperature steam is stored, the utilization efficiency of the heat of the steam is improved, a mixture of water and alcohol is arranged in the shell to absorb the heat of the steam in the heat exchange chamber, then evaporation heat transfer is conducted, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam utilization, and in particular to a stepped low-temperature steam multi-level recycling process and system. Background Art

[0002] When an industrial boiler burns fuel to generate steam, the steam first enters a steam generator to generate electricity. After power generation, the low-temperature steam cannot be reasonably utilized and will be discharged, resulting in a waste of heat energy. When the steam heat is stored as thermal energy, the heat storage efficiency of storing the low-temperature steam in the heat storage material at a time is also low.

[0003] The defects of the existing low-temperature steam utilization process are: 1. Prior art US20090241860A1 discloses a dual-pressure recovery boiler for pressurized steam recycling. This technology does not have a structure for classified utilization according to the temperature of the steam generated by the boiler. When the temperature of the steam generated by filtration is low, reheating the steam and sending it to the generator for power generation will waste more energy. At this time, it is more appropriate to use the steam heat in other places. When the steam temperature is high, reheating the steam and sending it to the steam generator for power generation will waste less energy. Therefore, a stepped low-temperature steam multi-level recycling process that can rotate the steam utilization method according to the temperature of the steam is needed to solve this problem.

[0004] 2. Prior art US08443606B2 discloses the use of a reheated dual-pressure recovery boiler to enhance steam circulation. This technology does not have the function of accelerating the efficiency of heat transfer from steam to solid heat storage materials. The heat transfer efficiency of steam to solid heat storage materials through solid heat conductive materials is low. Therefore, a stepped low-temperature steam multi-level recycling process that can accelerate the rate of heat transfer from steam to solid heat storage materials is needed to solve this problem.

[0005] 3. Prior art US07632471B2 discloses a reactor that uses high-temperature steam and recycled heat sources to separate mercury and organic matter contained in waste. This technology does not have a structure that transfers the stored heat to the outside for utilization by absorbing heat through atomized steam. When atomized steam is used to transfer the stored heat to the outside, if the atomized droplets contact the heat storage material to accelerate the absorption of the heat storage material, the liquid used for heat exchange in the heat storage material is easily evaporated and carried away by the atomized droplets, thereby causing the loss of the amount of liquid exchanged in the heat storage material, resulting in increased capital losses. Therefore, a stepped low-temperature steam multi-level recycling process that reduces the loss of liquid heat exchange materials in the heat storage material is needed to solve this problem.

[0006] 4. Prior art CN106287655A discloses a steam waste heat recovery process. This technology does not have a structure for recovering heat from steam to insulate the steam transmission pipeline. Although the transmission pipeline is insulated by thermal insulation cotton, the heat inside the pipeline is still easily lost to the outside through the thermal insulation cotton inside the long-distance transmission pipeline. By reducing the temperature difference between the inside and outside of the steam transmission pipeline, the heat loss rate inside the transmission pipeline can be reduced. Therefore, a stepped low-temperature steam multi-level recycling process is needed to insulate the transmission pipeline of relatively high-temperature steam with low-temperature steam that is difficult to recover heat to solve this problem. Summary of the invention

[0007] One purpose of the present application is to provide a stepped low-temperature steam multi-level recycling process and system that can solve the technical problems raised in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solution: a stepped low-temperature steam multi-level recycling process, the stepped low-temperature steam multi-level recycling process comprising the following steps: a: The water vapor generated by the heat of the boiler passes through pipe 1. When the temperature value detected by thermometer 2 is greater than the set value, the water vapor enters the steam generator through pipe 1 and flow valve 1. The steam generator generates electricity, and the condensed water generated inside the steam generator enters the heating water tank through pipe 2; b: When the temperature measured by thermometer 2 is lower than the set value, water vapor enters the heat exchange chamber in heat storage tank 1 through pipe 1, flow valve 5, pipe 6 and quick-insert pipe 1 to transfer heat to heat storage tank 1. The heat transfer liquid in the shell of heat storage tank 1 evaporates and transfers heat to the shell heat storage medium for storage. Then the steam in heat storage tank 1 enters heat storage tank 2 through the pipe for heat absorption and storage. Then the steam in heat storage tank 2 enters heat storage tank 3 through the pipe for heat storage. c: The exhaust steam from the steam generator enters pipe 5. When the temperature value measured by thermometer 1 is lower than the set value, flow valve 4 opens, and the steam in pipe 5 enters pipe 6. Then the steam enters heat storage tank 1 through quick-insert pipe 1 and absorbs heat from heat storage tank 1. d: When the temperature value measured by thermometer 1 is higher than the set value, flow valve 4 is closed, flow valve 3 is opened, the steam in pipe 5 enters the heater for heating, and then the steam in the heater enters the steam generator through pipe 4 again for power generation; e: When the heater needs to be replenished with water, the water pump draws the water in the heating replenishment tank into pipe three, and then enters the heater through pipe three for heating and evaporation; f: When steam is no longer introduced into the heat storage tank 1, the heat storage tank 2 and the heat storage tank 3, the quick-insert pipe 1 and other quick-insert pipes are removed, and then the pipe interfaces of the heat storage tank 1, the heat storage tank 2 and the heat storage tank 3 are completely sealed and insulated by heat insulation cotton, so as to reduce heat loss. When the heat in the heat storage tank 1, the heat storage tank 2 and the heat storage tank 3 needs to be output to the outside, the heat transfer liquid is sprayed into the heat storage tank 1, the heat storage tank 2 and the heat storage tank 3 from the lower inlet quick-insert pipes of the heat storage tank 1, the heat storage tank 2 and the heat storage tank 3 in the form of atomization, so as to absorb the internal heat of the respective heat storage tanks 1, the heat storage tank 2 and the heat storage tank 3, and then evaporate to transmit heat to the outside; The stepped low-temperature steam multi-level recycling process uses a stepped low-temperature steam multi-level recycling system.

[0009] Preferably, step f also includes transmitting the steam in the heat storage tank three through external pipes into the middle tube one and the middle tube two in the pipe one, the pipe two, the pipe three, the pipe four, the pipe five, and the pipe six, respectively, so as to reduce the temperature difference between the inner tube and the middle tube one, further reduce the heat transfer rate from the inner tube to the middle tube one, thereby reducing the heat loss rate in the inner tube.

[0010] Preferably, the step f also includes, before the heat in the heat storage box one, the heat storage box two and the heat storage box three is output to the outside by evaporating the liquid into steam, the electric telescopic rod drives the insulation pressure plate to move up, so that the steam in the heat exchange chamber enters the storage box through the solenoid valve and the pipeline seven.

[0011] Preferably, it includes a boiler, a steam generator heating water supply tank, a heater, a heat storage tank 1, a flow valve 2, a flow valve 3, a flow valve 4, a flow valve 5 and a flow valve 1, the output end of the boiler is equipped with a pipeline 1, and the output end of the pipeline 1 is connected to the input end of the flow valve 1, the output end of the flow valve 1 is connected to the input end of the steam generator, the output end of the steam generator is equipped with a pipeline 5, the output end of the pipeline 5 is equipped with a flow valve 4, the output end of the pipeline 5 is equipped with a flow valve 3, and the output end of the flow valve 3 is connected to the input end of the heater, the output end of the heater is equipped with a flow valve 2, the output end of the flow valve 2 is equipped with a pipeline 4, and the output end of the pipeline 4 is connected to the input end of the steam generator, the output end of the pipeline 1 is equipped with a flow valve 5, the output end of the flow valve 5 is equipped with a pipeline 6, and the input end of the pipeline 6 is connected to the input end of the flow valve 4, and the output end of the pipeline 6 is connected to the input end of the heat storage tank 1 through a quick-insert pipe 1.

[0012] Preferably, a thermometer 2 is provided through the pipe 1.

[0013] Preferably, a thermometer 1 is provided through the pipe 5.

[0014] Preferably, the output end of the steam generator is equipped with pipeline 2, and the output end of pipeline 2 is connected to the input end of the heating water supply tank, the output end of the heating water supply tank is equipped with a water pump, the output end of the water pump is equipped with pipeline 3, and the output end of pipeline 3 is connected to the input end of the heater.

[0015] Preferably, the output end of the heat storage tank one is connected to the input end of the heat storage tank two through a pipeline, and the output end of the heat storage tank two is connected to the input end of the heat storage tank three.

[0016] Preferably, the pipe one, pipe two, pipe three, pipe four, pipe five and pipe six are composed of an inner layer pipe, thermal insulation cotton one, middle layer pipe one, middle layer pipe two and thermal insulation cotton two. Thermal insulation cotton one is installed on the outer side of the inner layer pipe, middle layer pipe one is installed on the outer side of the thermal insulation cotton one, middle layer pipe two is installed on the outer side of the middle layer pipe one, and thermal insulation cotton two is installed on the outer side of the middle layer pipe two.

[0017] Preferably, the heat storage box one, heat storage box two and heat storage box three are simultaneously composed of a shell, a heat exchange chamber, thermal insulation cotton three, a storage box, an electric telescopic rod, an insulation pressure plate, a sponge, a pipe seven and a solenoid valve. The heat exchange chamber is installed at the bottom of the shell, the storage box is installed at the top of the shell, the electric telescopic rod is installed on the top of the storage box, the output end of the electric telescopic rod is installed with an insulation pressure plate, and the insulation pressure plate is located inside the storage box, and a sponge is installed inside the storage box. A pipe seven is installed at the bottom input end of the storage box, one end of the pipe seven passes through the top inner wall of the shell, and a solenoid valve is installed at the input end of the pipe seven. Thermal insulation cotton three is installed on the outside of the shell, the heat exchange chamber, the storage box and the electric telescopic rod. The input end of the heat exchange chamber in the heat storage box one is connected to the output end of the quick-insert tube one, the output end of the heat exchange chamber in the heat storage box one is connected to the input end of the heat exchange chamber in the heat storage box two through a quick-insert tube, and the output end of the heat exchange chamber in the heat storage box two is connected to the input end of the heat exchange chamber in the heat storage box three through a quick-insert tube.

[0018] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, when the temperature value detected by thermometer 2 is greater than the set value, water vapor enters the steam generator through pipeline 1 and flow valve 1, and the steam generator generates electricity. When the temperature measured by thermometer 2 is lower than the set value, water vapor enters the heat exchange chamber in heat storage tank 1 through pipeline 1, flow valve 5, pipeline 6 and quick-insert pipe 1, and transfers heat to heat storage tank 1, heat storage tank 2 and heat storage tank 3 for storage in sequence, so that high-temperature steam can be reasonably heated and then re-sent to the steam generator for power generation, and the heat of low-temperature steam can be stored, thereby improving the utilization efficiency of the heat of steam.

[0019] The present invention allows low-temperature steam to pass through heat storage tank 1, heat storage tank 2 and heat storage tank 3 in sequence, so as to absorb and store the heat of steam in stages, thereby improving the utilization efficiency of the heat of steam. At the same time, a mixture of water and alcohol is arranged in the shell to absorb the heat of the steam in the heat exchange chamber, thereby improving the heat exchange efficiency.

[0020] When the present invention outputs the heat in the heat storage box one, the heat storage box two and the heat storage box three to the outside, the high-temperature steam in the heat storage box one, the heat storage box two and the heat storage box three is firstly absorbed into the sponge in the storage box, and then the external heat transfer liquid is sprayed into the shell in an atomized manner, and then the atomized liquid absorbs heat and evaporates and is discharged from the output end of the shell, thereby reducing the loss of alcohol in the shell, and further reducing the waste of alcohol.

[0021] The steam in the heat storage box three of the present invention is transmitted through external pipes to enter between the middle tube one and the middle tube two in the pipe one, the pipe two, the pipe three, the pipe four, the pipe five and the pipe six respectively, thereby reducing the temperature difference between the inner tube and the middle tube one, further reducing the heat transfer rate from the inner tube to the middle tube one, thereby reducing the heat loss rate in the inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a process flow chart of the present invention; Figure 2 It is a schematic diagram of the structure of pipeline 1, pipeline 2, pipeline 3, pipeline 4, pipeline 5 and pipeline 6 of the present invention; Figure 3 It is a structural schematic diagram of a heat storage box of the present invention.

[0023] In the figure: 1. boiler; 2. pipeline one; 3. steam generator; 4. pipeline two; 5. heating water tank; 6. water pump; 7. pipeline three; 8. heater; 9. flow valve two; 10. pipeline four; 11. pipeline five; 12. thermometer one; 13. flow valve three; 14. flow valve four; 15. flow valve five; 16. pipeline six; 17. heat storage box one; 18. quick-insert tube one; 19. heat storage box two; 21. heat storage box three; 23. flow valve one; 24. inner layer pipe; 25. thermal insulation cotton one; 26. middle layer pipe one; 27. middle layer pipe two; 28. thermal insulation cotton two; 29. ​​shell; 30. heat exchange chamber; 31. thermal insulation cotton three; 32. thermometer two; 33. storage box; 34. electric telescopic rod; 35. thermal insulation pressure plate; 36. sponge; 37. pipeline seven; 38. solenoid valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1 , Figure 2 and Figure 3 , an embodiment provided by the present invention: a stepped low-temperature steam multi-level recycling process; The step-by-step low-temperature steam multi-level recycling process includes the following steps: a: The water vapor generated by the heat of boiler 1 passes through pipe 1 2. When the temperature value detected by thermometer 2 32 is greater than the set value, the water vapor enters the steam generator 3 through pipe 1 2 and flow valve 1 23. The steam generator 3 generates electricity. The condensed water generated inside the steam generator 3 enters the heating water supply tank 5 through pipe 2 4. b: When the temperature measured by thermometer 2 32 is lower than the set value, water vapor enters the heat exchange chamber 30 in the heat storage tank 17 through pipe 1 2, flow valve 5 15, pipe 6 16 and quick-insert pipe 18 to transfer heat to the heat storage tank 1 17. The heat transfer liquid in the shell 29 of the heat storage tank 1 17 evaporates and transfers the heat to the heat storage medium in the shell 29 for storage. Then the steam in the heat storage tank 1 17 enters the heat storage tank 2 19 through the pipe for heat absorption and storage. Then the steam in the heat storage tank 2 19 enters the heat storage tank 3 21 through the pipe for heat storage. c: The exhaust steam from the steam generator 3 enters the pipe 5 11. When the temperature value measured by the thermometer 12 is lower than the set value, the flow valve 4 14 opens, and the steam in the pipe 5 11 enters the pipe 6 16. Then the steam enters the heat storage tank 17 through the quick-insert pipe 18 and the heat is absorbed by the heat storage tank 17. d: When the temperature value measured by the thermometer 12 is higher than the set value, the flow valve 4 14 is closed, the flow valve 3 13 is opened, the steam in the pipeline 5 11 enters the heater 8 for heating, and then the steam in the heater 8 enters the steam generator 3 through the pipeline 4 10 again for power generation; e: When water needs to be replenished in the heater 8, the water pump 6 draws the water in the heating water replenishment tank 5 into the pipe three 7, and then enters the heater 8 through the pipe three 7 for heating and evaporation; f: When steam is no longer introduced into the heat storage box 1 17, the heat storage box 2 19 and the heat storage box 3 21, the quick-insert pipe 1 18 and other quick-insert pipes are removed, and then the pipe interfaces of the heat storage box 1 17, the heat storage box 2 19 and the heat storage box 3 21 are completely sealed and insulated by heat insulation cotton, so as to reduce heat loss. When the heat in the heat storage box 1 17, the heat storage box 2 19 and the heat storage box 3 21 needs to be output to the outside, the heat transfer liquid is sprayed into the heat storage box 1 17, the heat storage box 2 19 and the heat storage box 3 21 from the lower inlet quick-insert pipes of the heat storage box 1 17, the heat storage box 2 19 and the heat storage box 3 21 in the form of atomization, so as to absorb the internal heat of the respective heat storage boxes 1 17, the heat storage box 2 19 and the heat storage box 3 21, and then evaporate to transfer heat to the outside; The stepped low-temperature steam multi-level recycling process uses a stepped low-temperature steam multi-level recycling system.

[0028] Step f also includes transmitting the steam in the heat storage tank three 21 through external pipes into the middle tube one 26 and the middle tube two 27 in the pipe one 2, the pipe two 4, the pipe three 7, the pipe four 10, the pipe five 11, and the pipe six 16, respectively, so as to reduce the temperature difference between the inner tube 24 and the middle tube one 26, and further reduce the heat transfer rate from the inner tube 24 to the middle tube one 26, thereby reducing the heat loss rate in the inner tube 24.

[0029] Step g also includes that before the heat in the heat storage box 1 17, the heat storage box 2 19 and the heat storage box 3 21 is output to the outside by evaporating the liquid into steam, the electric telescopic rod 34 drives the insulation pressure plate 35 to move upward, so that the steam in the heat exchange chamber 30 enters the storage box 33 through the solenoid valve 38 and the pipe 7 37.

[0030] See also Figure 1 , Figure 2 and Figure 3 , an embodiment provided by the present invention: a stepped low-temperature steam multi-level recycling process; The boiler 1 includes a boiler 1, a steam generator 3 heating water supply tank 5, a heater 8, a heat storage tank 17, a flow valve 2 9, a flow valve 3 13, a flow valve 4 14, a flow valve 5 15 and a flow valve 1 23. The output end of the boiler 1 is equipped with a pipeline 1 2, and the output end of the pipeline 1 2 is connected to the input end of the flow valve 1 23, and the output end of the flow valve 1 23 is connected to the input end of the steam generator 3. The output end of the steam generator 3 is equipped with a pipeline 5 11, and the output end of the pipeline 5 11 is equipped with a flow valve 4 14, and the output end of the pipeline 5 11 is equipped with A flow valve 3 13 is provided, and the output end of the flow valve 3 13 is connected to the input end of the heater 8. A flow valve 2 9 is provided at the output end of the heater 8. A pipeline 4 10 is provided at the output end of the flow valve 2 9. The output end of the pipeline 4 10 is connected to the input end of the steam generator 3. A flow valve 5 15 is provided at the output end of the pipeline 1 2. A pipeline 6 16 is provided at the output end of the flow valve 5 15. The input end of the pipeline 6 16 is connected to the input end of the flow valve 4 14. The output end of the pipeline 6 16 is connected to the input end of the heat storage tank 17 through a quick-insert pipe 18. The pipeline 1 is connected to each other, a thermometer 2 32 is provided through the pipeline 12, and a thermometer 12 is provided through the pipeline 5 11. The boiler 1 generates steam, and the pipeline 12 provides a path for the steam generated by the boiler 1 to enter the steam generator 3 and the pipeline 6 16. The steam generator 3 converts the high-temperature steam pressure energy into electrical energy. The pipeline 5 11 can provide a transmission path for the steam in the steam generator 3 to enter the heater 8 and the pipeline 6 16. The flow valve 4 14 plays a role in controlling the steam in the pipeline 5 11 to enter the pipeline 6 16. The flow valve 3 13 plays a role in controlling the steam in the pipeline 5 11 to enter the heater 8. The flow valve 2 9 plays a role in controlling the steam in the heater 8 to enter the steam generator 3. The pipeline 4 10 can provide a path for the steam in the heater 8 to enter the steam generator 3. The flow valve 5 15 plays a role in controlling the steam in the pipeline 2 to enter the pipeline 6 16. The pipeline 6 16 can provide a transmission path for the steam in the pipeline 2 to enter the quick-insert tube 18. The thermometer 2 32 plays a role in measuring the steam temperature in the pipeline 12, and the thermometer 12 plays a role in measuring the steam in the pipeline 5 11.

[0031] See also Figure 1 , Figure 2 and Figure 3, an embodiment provided by the present invention: a stepped low-temperature steam multi-level recycling process; It includes a water pump 6, a pipe 2 4 is installed at the output end of the steam generator 3, and the output end of the pipe 2 4 is connected to the input end of the heating water supply tank 5, the output end of the heating water supply tank 5 is installed with a water pump 6, the output end of the water pump 6 is installed with a pipe 3 7, and the output end of the pipe 3 7 is connected to the input end of the heater 8, the output end of the heat storage tank 1 17 is connected to the input end of the heat storage tank 2 19 through a pipe, and the output end of the heat storage tank 2 19 is connected to the input end of the heat storage tank 3 21, the pipe 2 4 can provide a transmission path for the water in the steam generator 3 to enter the heating water supply tank 5, the outer side of the heating water supply tank 5 is covered with thermal insulation cotton, which can store condensed water discharged from the steam generator 3 and reduce the heat loss of the water, the water pump 6 can convert electrical energy into kinetic energy, thereby sucking the water in the heating water supply tank 5 and transmitting it into the heater 8, and the pipe 3 7 can provide a transmission path for the water in the water pump 6 to enter the heater 8.

[0032] See also Figure 1 , Figure 2 and Figure 3 , an embodiment provided by the present invention: a stepped low-temperature steam multi-level recycling process; The inner tube 24 includes a middle tube 1 26 and a middle tube 2 27. The pipe 1 2, the pipe 2 4, the pipe 3 7, the pipe 4 10, the pipe 5 11 and the pipe 6 16 are composed of the inner tube 24, the thermal insulation cotton 1 25, the middle tube 1 26, the middle tube 2 27 and the thermal insulation cotton 2 28. The outer side of the inner tube 24 is provided with the thermal insulation cotton 1 25, the outer side of the thermal insulation cotton 1 25 is provided with the middle tube 1 26, the outer side of the middle tube 1 26 is provided with the middle tube 2 27, the outer side of the middle tube 2 27 is provided with the thermal insulation cotton 2 28, and the inner tube 24 includes ... thermal insulation cotton 1 25 includes the thermal insulation cotton 1 25, the thermal insulation cotton 1 25 includes the thermal insulation cotton 1 26, the thermal insulation cotton 1 27 includes the thermal insulation cotton 2 28, and the inner tube 24 includes the thermal insulation cotton 1 25, the thermal insulation cotton 1 25 includes the thermal insulation cotton 1 25, the thermal insulation cotton 1 25 includes the thermal insulation cotton 1 26, the thermal insulation cotton 1 27 includes the thermal insulation cotton 2 28, and the inner tube 24 includes the thermal insulation cotton 1 25, the thermal insulation cotton 1 25 includes the thermal insulation cotton 1 25, the thermal insulation cotton 1 25 includes the The tube 24 can provide a transmission channel for the steam, the thermal insulation cotton 25 plays a role of thermal insulation, reducing the heat loss of the steam in the inner tube 24, the middle tube 1 26 and the middle tube 2 27 can provide a transmission path for the low-temperature steam discharged from the heat exchange chamber 30 in the heat storage box 3 21, thereby reducing the temperature difference between the inside and outside of the inner tube 24, and further reducing the heat loss rate of the steam in the inner tube 24, and the thermal insulation cotton 2 28 plays a role of thermal insulation, reducing the heat loss rate of the steam in the middle tube 2 27 and the middle tube 1 26.

[0033] See also Figure 1 , Figure 2 and Figure 3 , an embodiment provided by the present invention: a stepped low-temperature steam multi-level recycling process; The heat storage box 1 17, the heat storage box 2 19 and the heat storage box 3 21 are composed of the shell 29, the heat exchange chamber 30, the heat insulation cotton 3 31, the storage box 33, the electric telescopic rod 34, the heat insulation plate 35, the sponge 36, the pipeline 7 37 and the solenoid valve 38. The heat exchange chamber 30 is installed at the bottom of the shell 29, the storage box 33 is installed at the top of the shell 29, the electric telescopic rod 34 is installed at the top of the storage box 33, the output end of the electric telescopic rod 34 is installed with the heat insulation plate 35, and the heat insulation plate 35 is located inside the storage box 33. The storage box 33 is installed with a sponge 36, and the bottom input of the storage box 33 A pipe 7 37 is installed at the end, one end of the pipe 7 37 passes through the top inner wall of the shell 29, a solenoid valve 38 is installed at the input end of the pipe 7 37, and a heat insulation cotton 31 is installed on the outside of the shell 29, the heat exchange chamber 30, the storage box 33 and the electric telescopic rod 34. The input end of the heat exchange chamber 30 in the heat storage box 17 is connected to the output end of the quick-insert tube 18, the output end of the heat exchange chamber 30 in the heat storage box 17 is connected to the input end of the heat exchange chamber 30 in the heat storage box 2 19 through a quick-insert tube, and the output end of the heat exchange chamber 30 in the heat storage box 2 19 is connected to the input end of the heat exchange chamber 30 in the heat storage box 3 21 through a quick-insert tube. The shell 29 can be a heat storage material. The heat storage material is an inorganic salt heat storage material that can store heat. At the same time, there is a mixed liquid of water and alcohol inside the shell 29, which is used to accelerate the absorption of the heat of the steam in the heat exchange chamber 30, and transfer the heat to the heat storage material inside the shell 29 through its own evaporation and condensation. The contact part between the heat exchange chamber 30 and the shell 29 is a heat-conducting metal, which can transfer the heat of the steam in the heat exchange chamber 30 to the heat storage material in the shell 29. At the same time, the input end of the heat exchange chamber 30 can enter the steam, and the output end can discharge the steam. The storage box 33 can provide an installation position for the sponge 36, and the electric telescopic rod 34 can convert electrical energy into kinetic energy, thereby driving the thermal insulation pressure The plate 35 moves up and down, and the heat-insulating pressure plate 35 can squeeze the sponge 36 by moving downward, so that the water and alcohol in the sponge 36 are squeezed out, and the sponge 36 plays a role in absorbing the water vapor and alcohol vapor entering the storage box 33. The thermal insulation cotton three 31 can reduce the heat loss of the storage box 33, the shell 29 and the heat exchange chamber 30 in the heat storage box one 17, the heat storage box two 19 and the heat storage box three 21. The pipeline seven 37 can provide a transmission path for the steam in the shell 29 to enter the storage box 33, and at the same time, it can provide a transmission path for the liquid in the storage box 33 to enter the inside of the shell 29. The solenoid valve 38 plays a role in controlling the opening and closing of the channel of the pipeline seven 37.

[0034] Working principle: Before using the stepped low-temperature steam multi-level recycling system, you should first check whether there are any problems that affect the use of the stepped low-temperature steam multi-level recycling system. The water vapor generated by the heat of the boiler 1 passes through the pipe 12. When the temperature value detected by the thermometer 232 is greater than the set value, the water vapor enters the steam generator 3 through the pipe 12 and the flow valve 123. The steam generator 3 generates electricity. The condensed water generated inside the steam generator 3 enters the heating water tank 5 through the pipe 24. When the temperature measured by the thermometer 232 is lower than the set value, the water vapor enters the heat exchange chamber 30 in the heat storage tank 17 through the pipe 12, the flow valve 5 15, the pipe 6 16 and the quick-insert pipe 18 to transfer the heat to the heat storage tank 17. The heat storage tank 17 The heat transfer liquid in the shell 29 is heated and evaporated, and the heat is transferred to the heat storage medium in the shell 29 for storage. Then the steam in the heat storage tank 17 enters the heat storage tank 2 19 through the pipeline for heat absorption and storage. Then the steam in the heat storage tank 2 19 enters the heat storage tank 3 21 through the pipeline for heat storage. The exhaust steam in the steam generator 3 enters the pipeline 5 11. When the temperature value measured by the thermometer 12 is lower than the set value, the flow valve 4 14 is opened, and the steam in the pipeline 5 11 enters the pipeline 6 16. Then the steam enters the heat storage tank 17 through the quick-insert tube 18 and is absorbed by the heat storage tank 17. When the temperature value measured by the thermometer 12 is higher than the set value, the flow valve 4 14 is closed, the flow valve 3 13 is opened, and the steam in the pipeline 5 11 enters the pipeline 6 16. The steam enters the heater 8 for heating, and then the steam in the heater 8 enters the steam generator 3 through the pipe four 10 again to generate electricity. When the heater 8 needs to be replenished with water, the water pump 6 draws the water in the heating water replenishment tank 5 into the pipe three 7, and then enters the heater 8 through the pipe three 7 for heating and evaporation. When steam is no longer introduced into the heat storage tank one 17, the heat storage tank two 19 and the heat storage tank three 21, the quick-insert pipe one 18 and other quick-insert pipes are removed, and then the pipe interfaces of the heat storage tank one 17, the heat storage tank two 19 and the heat storage tank three 21 are completely sealed and insulated by heat insulation cotton, thereby reducing heat loss. When the heat in the heat storage tank one 17, the heat storage tank two 19 and the heat storage tank three 21 needs to be output to the outside, the heat transfer liquid is atomized The steam in the heat storage tank 3 21 is respectively transmitted through the external pipes into the middle tube 1 26 and the middle tube 2 27 in the pipe 1 2, the pipe 2 4, the pipe 3 7, the pipe 4 10, the pipe 5 11 and the pipe 6 16, thereby reducing the temperature difference between the inner tube 24 and the middle tube 1 26, further reducing the heat transfer rate from the inner tube 24 to the middle tube 1 26, thereby reducing the heat loss rate in the inner tube 24,Before the heat in the heat storage tank 1 17, the heat storage tank 2 19 and the heat storage tank 3 21 is outputted to the outside by evaporating the liquid into steam, the electric telescopic rod 34 drives the heat insulation pressing plate 35 to move upward, so that the steam in the heat exchange chamber 30 enters the storage tank 33 through the solenoid valve 38 and the pipe 7 37.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference signs in the claims should not be regarded as limiting the rights involved.

Claims

1. A step-by-step low-temperature steam multi-level recycling process, characterized in that: The step-by-step low-temperature steam multi-level recycling process comprises the following steps: a: The water vapor generated by the heat of the boiler (1) passes through the pipe 1 (2). When the temperature value detected by the thermometer 2 (32) is greater than the set value, the water vapor enters the steam generator (3) through the pipe 1 (2) and the flow valve 1 (23). The steam generator (3) generates electricity. The condensed water generated inside the steam generator (3) enters the heating water supply tank (5) through the pipe 2 (4). b: When the temperature measured by thermometer 2 (32) is lower than the set value, water vapor enters the heat exchange chamber (30) in heat storage tank 1 (17) through pipe 1 (2), flow valve 5 (15), pipe 6 (16) and quick-insert pipe 1 (18) to transfer heat to heat storage tank 1 (17). The heat transfer liquid in the shell (29) of heat storage tank 1 (17) evaporates and transfers heat to the heat storage medium in the shell (29) for storage. Then, the vapor in heat storage tank 1 (17) enters heat storage tank 2 (19) through the pipe to absorb and store heat. Then, the vapor in heat storage tank 2 (19) enters heat storage tank 3 (21) through the pipe to store heat. c: The exhaust steam from the steam generator (3) enters the pipe five (11). When the temperature value measured by the thermometer one (12) is lower than the set value, the flow valve four (14) opens, and the steam in the pipe five (11) enters the pipe six (16). Then, the steam enters the heat storage tank one (17) through the quick-insert pipe one (18) and absorbs heat from the heat storage tank one (17); d: When the temperature value measured by thermometer 1 (12) is higher than the set value, flow valve 4 (14) is closed, flow valve 3 (13) is opened, and the steam in pipe 5 (11) enters the heater (8) for heating, and then the steam in the heater (8) enters the steam generator (3) through pipe 4 (10) again for power generation; e: When water needs to be replenished in the heater (8), the water pump (6) draws water from the heating water replenishment tank (5) into the pipe three (7), and then enters the heater (8) through the pipe three (7) for heating and evaporation; f: When steam is no longer introduced into the heat storage tank 1 (17), the heat storage tank 2 (19) and the heat storage tank 3 (21), the quick-insert pipe 1 (18) and other quick-insert pipes are removed, and then the pipe interfaces of the heat storage tank 1 (17), the heat storage tank 2 (19) and the heat storage tank 3 (21) are completely sealed and insulated by heat insulation cotton, thereby reducing heat loss. When the heat in the heat storage tank 1 (17), the heat storage tank 2 (19) and the heat storage tank 3 (21) needs to be output to the outside, the heat transfer liquid is sprayed into the heat storage tank 1 (17), the heat storage tank 2 (19) and the heat storage tank 3 (21) from the lower inlet quick-insert pipes of the heat storage tank 1 (17), the heat storage tank 2 (19) and the heat storage tank 3 (21) in the form of atomization, thereby absorbing the internal heat of the heat storage tank 1 (17), the heat storage tank 2 (19) and the heat storage tank 3 (21), and then evaporating to transmit the heat to the outside; The stepped low-temperature steam multi-level recycling process uses a stepped low-temperature steam multi-level recycling system.

2. A step-by-step low-temperature steam multi-level recycling process according to claim 1, characterized in that: The step f also includes transmitting the steam in the heat storage box three (21) through external pipes into the middle tube one (26) and the middle tube two (27) in the pipe one (2), the pipe two (4), the pipe three (7), the pipe four (10), the pipe five (11) and the pipe six (16) respectively, thereby reducing the temperature difference between the inner tube (24) and the middle tube one (26), further reducing the transfer rate of heat in the inner tube (24) to the middle tube one (26), thereby reducing the heat loss rate in the inner tube (24).

3. The step-by-step low-temperature steam multi-level recycling process according to claim 1 is characterized in that: The step f also includes, before the heat in the heat storage box 1 (17), the heat storage box 2 (19) and the heat storage box 3 (21) is output to the outside by evaporating the liquid into steam, the electric telescopic rod (34) drives the heat insulation pressure plate (35) to move upward, so that the steam in the heat exchange chamber (30) enters the storage box (33) through the solenoid valve (38) and the pipeline seven (37).

4. A stepped low-temperature steam multi-level recycling system, characterized in that: The invention comprises a boiler (1), a steam generator (3) heating water supply tank (5), a heater (8), a heat storage tank (17), a flow valve (2) (9), a flow valve (3) (13), a flow valve (4) (14), a flow valve (5) (15) and a flow valve (23), wherein the output end of the boiler (1) is provided with a pipe (2), and the output end of the pipe (2) is connected to the input end of the flow valve (23), the output end of the flow valve (23) is connected to the input end of the steam generator (3), the output end of the steam generator (3) is provided with a pipe (5) (11), the output end of the pipe (5) is provided with a flow valve (4) (14), and the output end of the pipe (5) (11) is provided with a There is a flow valve three (13), and the output end of the flow valve three (13) is connected to the input end of the heater (8), the output end of the heater (8) is installed with a flow valve two (9), the output end of the flow valve two (9) is installed with a pipeline four (10), and the output end of the pipeline four (10) is connected to the input end of the steam generator (3), the output end of the pipeline one (2) is installed with a flow valve five (15), the output end of the flow valve five (15) is installed with a pipeline six (16), and the input end of the pipeline six (16) is connected to the input end of the flow valve four (14), and the output end of the pipeline six (16) is connected to the input end of the heat storage tank one (17) through a quick-insert pipe one (18).

5. The stepped low-temperature steam multi-level recycling system according to claim 4 is characterized in that: The first pipe (2) is provided with a second thermometer (32).

6. The stepped low-temperature steam multi-level recycling system according to claim 4 is characterized in that: The pipe 5 (11) is provided with a thermometer 1 (12) running through it.

7. The stepped low-temperature steam multi-level recycling system according to claim 4 is characterized in that: The output end of the steam generator (3) is equipped with a second pipe (4), and the output end of the second pipe (4) is connected to the input end of the heating water supply tank (5), the output end of the heating water supply tank (5) is equipped with a water pump (6), the output end of the water pump (6) is equipped with a third pipe (7), and the output end of the third pipe (7) is connected to the input end of the heater (8).

8. The stepped low-temperature steam multi-level recycling system according to claim 4 is characterized in that: The output end of the heat storage tank 1 (17) is connected to the input end of the heat storage tank 2 (19) through a pipeline, and the output end of the heat storage tank 2 (19) is connected to the input end of the heat storage tank 3 (21).

9. The stepped low-temperature steam multi-level recycling system according to claim 4 is characterized in that: The pipe 1 (2), pipe 2 (4), pipe 3 (7), pipe 4 (10), pipe 5 (11) and pipe 6 (16) are simultaneously composed of an inner layer pipe (24), a thermal insulation cotton 1 (25), a middle layer pipe 1 (26), a middle layer pipe 2 (27) and a thermal insulation cotton 2 (28). The outer side of the inner layer pipe (24) is provided with the thermal insulation cotton 1 (25), the outer side of the thermal insulation cotton 1 (25) is provided with the middle layer pipe 1 (26), the outer side of the middle layer pipe 1 (26) is provided with the middle layer pipe 2 (27), and the outer side of the middle layer pipe 2 (27) is provided with the thermal insulation cotton 2 (28).

10. The stepped low-temperature steam multi-level recycling system according to claim 4, characterized in that: The heat storage box 1 (17), the heat storage box 2 (19) and the heat storage box 3 (21) are simultaneously composed of a shell (29), a heat exchange chamber (30), a heat insulation cotton 3 (31), a storage box (33), an electric telescopic rod (34), an insulation pressure plate (35), a sponge (36), a pipeline 7 (37) and a solenoid valve (38). The heat exchange chamber (30) is installed at the bottom of the shell (29), the storage box (33) is installed at the top of the shell (29), the electric telescopic rod (34) is installed at the top of the storage box (33), the insulation pressure plate (35) is installed at the output end of the electric telescopic rod (34), and the insulation pressure plate (35) is located inside the storage box (33). The sponge (36) is installed inside the storage box (33), and the bottom output of the storage box (33) is installed. A pipe seven (37) is installed at the inlet end, one end of the pipe seven (37) passes through the top inner wall of the shell (29), a solenoid valve (38) is installed at the input end of the pipe seven (37), and thermal insulation cotton three (31) is installed on the outer sides of the shell (29), the heat exchange chamber (30), the storage box (33) and the electric telescopic rod (34). The input end of the heat exchange chamber (30) in the heat storage box one (17) is connected to the output end of the quick-insert pipe one (18), the output end of the heat exchange chamber (30) in the heat storage box one (17) is connected to the input end of the heat exchange chamber (30) in the heat storage box two (19) through the quick-insert pipe, and the output end of the heat exchange chamber (30) in the heat storage box two (19) is connected to the input end of the heat exchange chamber (30) in the heat storage box three (21) through the quick-insert pipe.

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