CN110057224B - Waste heat utilization method - Google Patents
Waste heat utilization method Download PDFInfo
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- CN110057224B CN110057224B CN201910363471.1A CN201910363471A CN110057224B CN 110057224 B CN110057224 B CN 110057224B CN 201910363471 A CN201910363471 A CN 201910363471A CN 110057224 B CN110057224 B CN 110057224B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2280/00—Output delivery
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to the technical field of waste heat recycling, and discloses a waste heat utilization method, which comprises the following steps of S1: the pump assembly, the heat absorption assembly and the energy consumption assembly are communicated to form a circulation loop; s2: sending the high-temperature workpiece into a heat absorption assembly; s3: starting a pump assembly, introducing a heat exchange medium into a heat absorption assembly to exchange heat with the workpiece, and introducing the heat exchange medium into an energy consumption assembly; s4: generating power, heating water or producing water vapor by using the heat energy of the heat exchange medium entering the energy consumption assembly; s5: the heat exchange medium which is consumed in the heat energy in the step S4 flows back into the heat absorption assembly through the pump assembly, and the heat exchange medium exchanges heat with the workpiece again; s6: repeating the steps to circulate. The method is simple, and can recycle the waste heat of the special-shaped workpiece.
Description
Technical Field
The invention relates to the technical field of waste heat recycling, in particular to a waste heat utilization method.
Background
The waste heat refers to heat energy which is generated by various heat energy conversion devices, energy utilization devices, chemical reaction devices and produced high-temperature workpieces and is not utilized in the production process. A large amount of waste heat needing to be recycled exists in the industrial fields of textile printing and dyeing, electroplating processing, chemical pharmacy, printing and drying, coal slime drying, casting, electrolytic aluminum production and the like, the waste heat is only recycled by a heat exchanger in the conventional processing factory, however, the recycling efficiency of the heat exchanger is low, the recycling of high-temperature workpieces such as special-shaped workpieces is still in a basically blank state, and the high-temperature special-shaped workpieces are all processed in a natural cooling mode at the present part. If the energy can be fully utilized by recycling, the industrial energy loss can be greatly reduced. Meanwhile, waste heat recycling is an important way for improving the economy and saving the fuel.
Based on the above problems, the applicant has developed waste heat utilization to generate electricity, heat water, produce water vapor, and the like by using waste heat of a high-temperature workpiece, so as to improve the waste heat utilization rate and reduce energy waste.
Disclosure of Invention
The invention aims to provide a waste heat utilization method for recycling waste heat of a high-temperature workpiece.
In order to achieve the purpose, the invention provides the following technical scheme: a waste heat utilization method comprises the following steps:
s1: the pump assembly, the heat absorption assembly and the energy consumption assembly are communicated in sequence to form a circulation loop;
s2: sending the high-temperature workpiece into a heat absorption assembly;
s3: starting a pump assembly, introducing a heat exchange medium into a heat absorption assembly to exchange heat with the workpiece, and introducing the heat exchange medium into an energy consumption assembly;
s4: generating power, heating water or producing water vapor by using the heat energy of the heat exchange medium entering the energy consumption assembly;
s5: the heat exchange medium which is consumed in the heat energy in the step S4 flows back into the heat absorption assembly through the pump assembly, and the heat exchange medium exchanges heat with the workpiece again;
s6: repeating the steps to circulate.
The principle and the beneficial effects of the invention are as follows:
in the step S1, all the components are sequentially communicated to form a circulating loop, so that the heat exchange medium can exchange heat for a high-temperature workpiece for multiple times and utilize heat energy in the heat exchange medium for multiple times, and the efficiency of waste heat utilization is improved.
In S2, the high-temperature workpiece is wrapped by the heat absorption assembly to reduce heat energy loss of the high-temperature workpiece, and compared with a traditional heat exchanger, the high-temperature workpiece with an abnormal structure such as an electrolytic aluminum stub and the like can be placed in the heat absorption assembly to be wrapped to reduce heat energy loss.
In S3 and S4, the pump assembly drives the heat exchange medium to exchange heat through the heat absorption assembly and convey the heat exchange medium into the energy consumption assembly, the heat exchange medium transmits heat energy to the energy consumption assembly, the energy consumption assembly generates electricity and heats water or generates water vapor, the traditional heat exchanger can only be used for heating water and generating water vapor, and the heat energy utilization rate is low. In the scheme, heat in the heat exchange medium can be utilized for power generation, a large amount of heat energy is utilized, and the utilization efficiency of waste heat is improved.
Further, in S1, an auxiliary heating unit is further connected, the temperature of the heat exchange medium is detected during the circulation of the heat exchange medium, and when the temperature of the heat exchange medium is too low, the auxiliary heating unit is started to heat the heat exchange medium.
Has the advantages that: through the heat transfer, the temperature of the high temperature work piece in the heat absorption subassembly can reduce gradually to lead to the temperature reduction of heat transfer medium, the temperature of heat transfer medium is difficult to make energy consumption subassembly work. Therefore, the temperature of the heat exchange medium needs to be detected, and after the temperature is reduced, the heat exchange medium is heated through the auxiliary heating assembly, so that the temperature of the heat exchange medium is increased to the working temperature of the energy consumption assembly.
Further, after the high-temperature workpiece is sent into the heat absorption assembly, the heat absorption assembly is sealed within 1-5 min.
Has the advantages that: after the high-temperature component is sent into the heat absorption component, the heat absorption component is in an open state, the high temperature of the high-temperature workpiece can be released out through the opening, and the waste heat utilization rate is reduced, so that the heat absorption component is closed within 1-5 min, and the waste heat loss of the high-temperature workpiece is reduced.
Further, a temperature-sensitive sensor is started to detect the temperature of the heat exchange medium.
Has the advantages that: the temperature-sensitive sensor detects heat exchange media, and is more convenient and quicker than a thermometer.
Further: the auxiliary heating assembly comprises a heater and a controller, and the controller is used for controlling the heater to work.
Has the advantages that: the controller controls the on-off of the heater so as to reduce the steps of starting the heater by operators.
Further: and in the S2, the heat absorption component comprises an outer cylinder and an inner cylinder arranged in the outer cylinder, a cavity is arranged between the inner cylinder and the outer cylinder, and the high-temperature workpiece is placed in the inner cylinder.
Has the advantages that: the inner cylinder and the outer cylinder form an interlayer structure, and heat exchange media are transmitted through the cavity, and because the inner cylinder and the outer cylinder are of the interlayer structure, when the inner cylinder is greatly impacted, the heat exchange media in the outer cylinder and the cavity can support the inner cylinder, so that the deformation probability of the inner cylinder is reduced.
Further, the heat absorbing assembly is sealed through the top cover in the S2, the center of the bottom of the top cover is an inverted cone-shaped bulge, and a cavity is formed in the top cover.
Has the advantages that: because the hot gas flow is along the in-process that the arch periphery flows, partial heat exchanges with the outside air through the top cap, consequently the setting of heat conduction unit can improve the speed that the hot gas flow flows to the section of thick bamboo wall flow of inner tube, and then improves waste heat recovery's effect.
Further, the bottom of top cap still is equipped with the heat conduction unit of a plurality of equipartitions along the arch, the heat conduction unit leads the heat of lid bottom to in the cavity.
Has the advantages that: because the hot gas flow is along the in-process that the arch periphery flows, partial heat exchanges with the outside air through the top cap, consequently the setting of heat conduction unit can improve the speed that the hot gas flow flows to the section of thick bamboo wall flow of inner tube, and then improves waste heat recovery's effect.
Further, the heat conduction unit includes the heat-conducting plate and drives the heat-conducting plate around the reciprocating swing's of horizontal axis actuating mechanism, the heat-conducting plate is located between arch and the inner tube, be fixed with a plurality of gasbags between heat-conducting plate and the arch, be equipped with the check valve that admits air on the gasbag, be equipped with the exhaust hole of intercommunication gasbag on the heat-conducting plate, the downthehole check valve that gives vent to anger that is equipped with of exhaust, start actuating mechanism work.
Has the advantages that: the heat-conducting plate is at reciprocal wobbling in-process for the continuous inflation of gasbag is with dwindling, and when the gasbag volume reduced, its inside atmospheric pressure increased, the check valve that gives vent to anger opened, and the inside steam of gasbag is discharged through the exhaust hole, therefore the gasbag combustion gas stream can lead to the fact the effect of buffering to the hot gas stream that is close to the top cap, slows down the speed that the hot gas stream rises, reduces the hot gas stream and flows through the probability of top cap with external heat transfer, thereby improves the recovery effect of waste heat.
Further, the vent hole is obliquely arranged, and an outlet at one side far away from the air bag faces downwards.
Has the advantages that: therefore, the airflow discharged by the air bag faces downwards, and the downward impact force is given to the hot air flow close to the top cover, so that the buffer force generated by the hot air flow is improved, and the rising rate of the hot air flow is further slowed down.
Drawings
FIG. 1 is an axial view of a waste heat utilization system according to a first embodiment of the present invention;
FIG. 2 is a perspective view of a first, second and third heat sink assembly in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a second embodiment of the present invention in a partially cut-away view;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a sectional view of the top cover in the second embodiment;
FIG. 6 is a schematic view of a top cover in a partial cross-section according to the third embodiment.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the heat pump comprises a mechanical pump 1, a heat absorption assembly 2, an electromagnetic pump 3, a heater 4, a Stirling motor 5, a heat exchanger 6, a liquid storage tank 7, an inner cylinder 101, an outer cylinder 102, a groove 103, a heat dissipation hole 104, a heat absorption pipe 105, a mounting hole 106, a hoop 107, a mounting lug 108, a support pipe 109, a material receiving plate 110, a top cover 200, a protrusion 201, a cavity 202, a cover plate 203, a heat conduction plate 300, a speed reduction motor 301, a guide rod 302, a bearing seat 303, an incomplete gear 304, an end face gear 305, an air bag 306, an exhaust hole 307 and an air outlet.
The first embodiment is as follows:
a waste heat utilization method comprises the following steps:
s1: use a waste heat utilization system, as shown in fig. 1 and fig. 2, including being used for driving the circulating pump package of heat exchange medium, the pump package includes mechanical pump 1 and electromagnetic pump 3 in this embodiment, and the inlet and the liquid outlet of mechanical pump 1 all are provided with heating element, and heating element is the glow stick, and the model of glow stick is: DN40, the electric heating rod is electrically connected with a power supply.
The heat absorption device comprises an outer cylinder 102 and an inner cylinder 101 arranged in the outer cylinder 102, and a heat exchange medium flowing channel is arranged between the inner cylinder 101 and the outer cylinder 102. Specifically, the mechanical pump 1 is communicated with the channel, and the electromagnetic pump 3 is communicated with the cavity.
The liquid storage component is a liquid storage tank 7, and the liquid storage tank 7 is communicated with the mechanical pump 1. The energy consumption assembly comprises a Stirling motor 5 and a heat exchanger 6, and the specific heat exchanger 6 is communicated with a liquid storage tank 7 and the Stirling motor 5 respectively. The Stirling motor 5 and the electromagnetic pump 3 are communicated with each other to form an auxiliary heating assembly, the auxiliary heating assembly comprises a heating container and a heater 4 fixed on the heating container, and the type of the heater 4 is as follows: DN125X800, specifically, a liquid storage container is fixed on the Stirling motor 5, a heat absorption sheet of the Stirling motor extends into the liquid storage container, and the liquid storage container is respectively communicated with the heat exchanger 6 and the heating container. Be provided with temperature sensitive sensor between heater 4 and electromagnetic pump 3, the model is: SIN-WZP-PT100, the temperature sensitive sensor is electrically connected with a controller arranged on the heater 4, and the controller is of the type: 900U, the controller is electrically connected with the heater 4, the controller controls the on-off of the heater 4, and the temperature-sensitive sensor is positioned at the liquid outlet of the electromagnetic pump 3. The communication in this embodiment is implemented by using the existing pipelines, and is not described herein again.
The heat exchange medium in this example is a liquid metal, which is an alloy consisting of, by mass, 20% of gallium, 30% of indium, 19% of bismuth, 5% of aluminum, 3% of iron, 5% of magnesium, and 18% of tin, and the melting point of the liquid metal is 40 ℃.
The mechanical pump 1, the heat absorption assembly 2, the electromagnetic pump 3, the heater 4, the Stirling motor 5, the heat exchanger 6 and the liquid storage tank 7 are communicated in sequence, and a circulation loop is formed.
S2, in this embodiment, taking the electrolytic aluminum residual pole as an example, the bus bar adhered with the electrolytic aluminum residual pole is placed in the inner cylinder 101, and the heat absorbing component 2 of this embodiment is cylindrical, so that the special-shaped structure such as the electrolytic aluminum residual pole can be accommodated.
S3: initially, the liquid metal is easily solidified at normal temperature, so that the electric heating rod is started to heat the liquid metal, and then the mechanical pump 1 is started to drive the liquid metal. After the electrolytic aluminum residual pole is placed, the electromagnetic pump 3 is started, the mechanical pump 1 sends liquid metal into the channel, the liquid metal in the channel carries out heat exchange on the electrolytic aluminum residual pole, then the electromagnetic pump 3 sends the heat-absorbing high-temperature liquid metal into the heating container, then the liquid metal enters the liquid storage container, and finally the liquid metal enters the heat exchanger 6.
S4: the high-temperature liquid metal exchanges heat with the heating sheet in the liquid storage container, and the Stirling generator absorbs a large amount of heat to work and generate electricity, wherein the working temperature of the Stirling generator is 400 ℃ in the embodiment and the Stirling generator passes through the heat exchanger 6. After the Stirling generator consumes the heat energy, the heat exchanger 6 utilizes the residual heat energy of the liquid metal, such as: heating water, generating water vapor, etc. After long-time heat exchange, the temperature of the electrolytic aluminum stub is gradually reduced, so that the temperature of the liquid metal is also gradually reduced, and the temperature of the liquid metal is insufficient to enable the Stirling motor 5 to work. At this time, the temperature sensitive sensor detects the temperature of the liquid metal, for example: and the temperature sensor sends a temperature signal to the controller, the controller controls the heater 4 to work, and the heater 4 heats the liquid metal in the heating container, so that the temperature of the liquid metal is increased, and the Stirling generator continuously works. When the operator finds that the heater 4 is operating, the electrolytic aluminum anode scrap in the inner tube 101 is replaced.
S5: under the action of the mechanical pump 1 and the electromagnetic pump 3, the liquid metal after the waste heat is utilized flows back to the liquid storage tank 7 and is sent into the channel through the mechanical pump 1, and the liquid metal in the channel absorbs heat of the electrolytic aluminum anode scrap again, so that the circulation of the liquid metal is completed.
S6: repeating the steps to circulate.
Example two:
the difference between the second embodiment and the first embodiment is that, as shown in fig. 2, fig. 3, fig. 4 and fig. 5, the heat absorbing assembly 2 is disposed on the rack, a spiral groove 103 is disposed on the outer wall of the inner cylinder 101, and the cross section of the groove 103 is semicircular, as shown in fig. 3, a plurality of heat dissipating holes 104 are disposed on the inner wall of the inner cylinder 101, the heat dissipating holes 104 are through holes, a heat absorbing pipe 105 for circulating a heat exchange medium is clamped tightly in the groove 103, the heat absorbing pipe 105 is disposed in the channel, and mounting holes 106 for passing the heat absorbing pipe 105 are disposed on the upper portion and the lower portion of the outer cylinder 102.
Be equipped with the locking mechanism of a plurality of fixed heat absorption pipes 105 on inner tube 101 outer wall, wherein locking mechanism is including being semi-annular staple bolt 107 and bolt, the outside (towards the protruding one side of staple bolt 107) bending type in both ends of staple bolt 107 becomes installation ear 108, locating hole I has been seted up on installation ear 108, be equipped with a set of screw hole I that corresponds with the locating hole position on inner tube 101 outer wall, two screw hole I in a set of screw hole I are located both sides about recess 103 respectively, pack the bolt into in locating hole I and screw hole I, thereby the realization is fixed the staple bolt 107 in heat absorption pipe 105's outside.
A plurality of supporting tubes 109 communicated with the heat absorbing tubes 105 are distributed at the bottom of the heat absorbing component 2 in a criss-cross manner, the supporting tubes 109 can be fixed on the rack and also can be fixed below the heat absorbing component 2 in other modes, the supporting tubes 109 are stainless steel hard tubes, a material receiving plate 110 horizontally connected to the rack in a sliding manner is further arranged below the supporting tubes 109, and the material receiving plate 110 is used for collecting impurities falling from a workpiece to be heat absorbed.
Be equipped with the top cap 200 that covers at the top of heat absorption subassembly 2 and close heat absorption subassembly 2, top cap 200 is circular in this embodiment, as shown in fig. 4, be equipped with the arch 201 that is the back taper in the center department of top cap 200 bottom, be equipped with the open cavity in top 202 in top cap 200, cavity 202 is the back taper equally, can dismantle on the top cap 200 to be connected with the apron 203 with cavity 202 confined, specifically set up to: a positioning hole II is formed in the cover plate 203, a threaded hole II corresponding to the positioning hole II is formed in the top cover 200, bolts are installed in the positioning hole II and the threaded hole II to achieve installation of the cover plate 203 on the top cover 200, when the heat insulation cover is used, a heat insulation material is filled in the cavity 202, and in the embodiment, the heat insulation material is glass wool; a lifting lug convenient for lifting the crane is further arranged on the top cover 200.
In S2, taking an electrolytic aluminum anode scrap as an example, the electrolytic aluminum anode scrap to be cooled is placed on the supporting tube 109 by a crane (or other means) in a workshop, and then the top cover 200 is covered on the top of the heat absorbing component 2 by the lifting lug, when the workpiece is placed in, the workpiece slightly collides with the supporting tube 109, so that the slag remained on the workpiece falls on the material receiving plate 110 through the gap between the supporting tubes 109, the high-temperature workpiece heats the air around the workpiece, and the hot air flow continuously flows upwards due to the rising property of the hot air flow.
When the hot air flow rises to the vicinity of the top cover 200, the protrusion 201 is in an inverted cone shape, so that the hot air flow flows along the outer periphery of the protrusion 201 to the side close to the inner cylinder 101, the hot air flows through the heat dissipation holes 104 to enter the groove 103, and the heat of the hot air is taken away by the liquid metal in the heat absorption pipe 105.
Example three:
the third embodiment is different from the first embodiment in that, as shown in fig. 6, a plurality of heat conducting units are uniformly distributed at the bottom of the top cover 200 along the protrusion 201, the heat conducting units are used for dispersing heat at the bottom of the top cover 200 to the heat absorbing pipe 105, wherein each heat conducting unit comprises a heat conducting plate 300 and a driving mechanism for driving the heat conducting plate 300 to swing back and forth around a horizontal axis, the heat conducting plate 300 is located between the protrusion 201 and the inner cylinder 101, the driving mechanism in this embodiment comprises a speed reducing motor 301 and a guide rod 302, the speed reducing motor 301 is fixed at the top of the top cover 200, the top cover 200 is provided with a shaft hole for an output shaft of the speed reducing motor 301 to pass through, an incomplete gear 304 located below the top cover 200 is coaxially fixed on a driving shaft of the speed reducing: a bearing seat 303 is fixed at the bottom of the top cover 200, the guide rod 302 is connected with the bearing seat 303 through a bearing, an end face gear 305 engaged with the incomplete gear 304 is coaxially fixed at the end of the guide rod 302, in the embodiment, the end face gear 305 and the incomplete gear 304 have straight teeth, the guide rod 302 is provided with a torsion spring fixed at the bottom of the top cover 200, and the heat conducting plate 300 is fixed on the guide rod 302.
When the incomplete gear 304 and the face gear 305 are in an unmeshed state, the lower end of the heat conducting plate 300 inclines towards one side of the protrusion 201, during operation, the reduction motor 301 drives the incomplete gear 304 to rotate at a slow speed, when the incomplete gear 304 is meshed with the face gear 305, the guide rod 302 rotates, so that the heat conducting plate 300 swings towards one side far away from the protrusion 201, meanwhile, the torsion spring stores energy, when the incomplete gear 304 is disengaged from the face gear 305, the torsion spring releases energy, so that the guide rod 302 rotates in a reverse direction rapidly, the heat conducting plate 300 resets rapidly, and therefore reciprocating swing of the heat conducting plate 300 is achieved.
A plurality of air bags 306 are fixed between the heat conducting plate 300 and the bulge 201, one side of each air bag 306 is bonded on the bulge 201, the other side of each air bag 306 is bonded on the heat conducting plate 300, gaps are reserved among the air bags 306, each air bag 306 is provided with an air inlet one-way valve, a plurality of vent holes 307 communicated with the inside of each air bag 306 are formed in the heat conducting plate 300, the vent holes 307 are obliquely arranged relative to the heat conducting plate 300, namely when the heat conducting plate 300 is close to the bulge 201, the central axis of each vent hole 307 is in a vertical state, an air outlet one-way valve 308 is arranged in each vent hole 307, when the volume of each air bag 306 is reduced, the air pressure in each air bag 306 is increased, the air outlet one-way valve 308 is opened, the air in each air bag 306 is exhausted, and when the volume of each air bag 306 is increased.
Because most of the heat of the hot air flow is absorbed by the heat exchange medium when the hot air flow rises to the vicinity of the top cover 200, the temperature is greatly reduced to about 100-.
In S2, taking electrolytic aluminum as an example, after the electrolytic aluminum is placed on the inner cylinder 101, and after the top cover 200 is covered on the heat absorbing assembly 2, the power supply connected to the speed reducing motor 301 is turned on, so that the heat conducting plate 300 in the heat absorbing assembly 2 swings back and forth, when the hot air flow rises to near the top cover 200, the hot air flows around the protrusion 201 due to the blocking of the protrusion 201, the hot air flows around the protrusion 201, the air bag 306 between the protrusion 201 and the heat conducting plate 300 has a certain blocking effect on the hot air flow, so that the hot air flows to the heat conducting plate 300, and when the heat conducting plate 300 swings away from the protrusion 201, the thrust force is given to the side wall of the inner cylinder 101, so that the hot air flow can exchange heat with the heat exchange medium in the heat absorbing pipe 105 quickly, and.
When the heat conducting plate 300 swings to the side far away from the protrusion 201, the air bag 306 stretches the inner volume to increase, the inner air pressure is reduced, the air inlet check valve is opened, the external hot air flows into the air bag 306, when the heat conducting plate 300 swings to the side near the protrusion 201, the air bag 306 is extruded, the volume of the air bag 306 is reduced, the inner air pressure is increased, the air outlet check valve 308 is opened, the hot air in the air bag 306 is discharged through the air outlet 307, and the outlet of the air outlet 307 inclines downwards, so that the hot air flow discharged by the air bag 306 provides downward acting force for the hot air flow close to the top cover 200, the rising speed of the hot air flow is reduced, the probability of heat exchange between the hot air flow.
In addition, since the heat conduction plate 300 is reset by the energy released by the torsion spring, the resetting speed of the heat conduction plate 300 is high, the flow rate of the gas discharged through the exhaust hole 307 is high, and the acting force on the gas flow below the gas flow is also increased.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent. The techniques, shapes, and structural parts, which are omitted from the description of the present invention, are all known techniques.
Claims (6)
1. A waste heat utilization method is characterized in that: the method comprises the following steps:
s1: the heat absorption assembly comprises a cavity for placing a high-temperature workpiece, an outer barrel and an inner barrel arranged in the outer barrel, and a channel for heat exchange medium circulation is arranged between the inner barrel and the outer barrel;
s2: sending a high-temperature workpiece into a heat absorption assembly, sealing the heat absorption assembly through a top cover, wherein the center of the bottom of the top cover is provided with an inverted conical bulge, a cavity is arranged in the top cover, the bottom of the top cover is also provided with a plurality of uniformly distributed heat conduction units along the bulge, the heat conduction units conduct heat at the bottom of the top cover into a channel, each heat conduction unit comprises a heat conduction plate and a driving mechanism for driving the heat conduction plate to swing back and forth around a horizontal axis, the heat conduction plate is positioned between the bulge and an inner cylinder, a plurality of air bags are fixed between the heat conduction plate and the bulge, air inlet check valves are arranged on the air bags, air exhaust holes communicated with the air bags are arranged on the heat conduction plate, air outlet check valves are;
s3: starting a pump assembly, introducing a heat exchange medium into a heat absorption assembly to exchange heat with a workpiece, and introducing the heat exchange medium into an energy consumption assembly, wherein the heat exchange medium is liquid metal;
s4: generating power, heating water or producing water vapor by using the heat energy of the heat exchange medium entering the energy consumption assembly;
s5: the heat exchange medium which is consumed in the heat energy in the step S4 flows back into the heat absorption assembly through the pump assembly, and the heat exchange medium exchanges heat with the workpiece again;
s6: repeating the steps to circulate.
2. The method for utilizing waste heat according to claim 1, characterized in that: and in the step S1, an auxiliary heating assembly is communicated, the temperature of the heat exchange medium is detected in the circulation process of the heat exchange medium, and when the temperature of the heat exchange medium is too low, the auxiliary heating assembly is started to heat the heat exchange medium.
3. The method for utilizing waste heat according to claim 1, characterized in that: and after the high-temperature workpiece is sent into the heat absorption assembly, the heat absorption assembly is sealed within 1-5 min.
4. The waste heat utilization method according to any one of claims 1 to 3, characterized in that: and starting a temperature-sensitive sensor to detect the temperature of the heat exchange medium.
5. The waste heat utilization method according to claim 2, characterized in that: the auxiliary heating assembly comprises a heater and a controller, and the controller is started to control the heater to work.
6. The waste heat utilization method according to claim 5, characterized in that: the method is characterized in that: and in the S2, the heat absorption component comprises an outer cylinder and an inner cylinder arranged in the outer cylinder, a channel is arranged between the inner cylinder and the outer cylinder, and the high-temperature workpiece is placed in the inner cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910363471.1A CN110057224B (en) | 2019-04-30 | 2019-04-30 | Waste heat utilization method |
Applications Claiming Priority (1)
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| DE3401194A1 (en) * | 1984-01-14 | 1985-07-18 | Werner 7433 Dettingen Schweikert | Apparatus for exploiting the energy from various metal wastes in connection with sodium hydroxide |
| CN2650052Y (en) * | 2003-08-13 | 2004-10-20 | 韩文琦 | Apparatus for recovering high temperature radiation waste heat with intermittent discharge |
| CN201413048Y (en) * | 2009-04-29 | 2010-02-24 | 铜陵安东铸钢有限责任公司 | Waste heat collecting device of electric heating furnace |
| CN101907405A (en) * | 2010-07-28 | 2010-12-08 | 鹤壁地恩地新材料科技有限公司 | Heat recovery device of magnesium smelting reducing slag |
| CN104359322B (en) * | 2012-06-26 | 2016-02-24 | 山东百川集大环境工程有限公司 | Heat-energy recovery system of high-temperature material and method of work thereof |
| CN103233100A (en) * | 2013-05-08 | 2013-08-07 | 石家庄新华能源环保科技股份有限公司 | Cover-type furnace generating steam by using waste heat |
| CN104032199B (en) * | 2014-06-17 | 2016-04-20 | 北京依米康科技发展有限公司 | A kind of low melting point liquid metal and its preparation method and application |
| CN204987622U (en) * | 2015-06-17 | 2016-01-20 | 东新冷冻企业有限公司 | Heat recovery unit and energy -conserving refrigeration system |
| CN205940162U (en) * | 2016-08-25 | 2017-02-08 | 天津泰利信碳素制品股份有限公司 | Device is used multipurposely with waste heat recovery to prebaked anode preparation |
| CN108917412A (en) * | 2018-06-29 | 2018-11-30 | 河南玉发磨料有限公司 | A kind of white fused alumina block afterheat utilizing system |
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