CN113242623A - Metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature rising device - Google Patents
Metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature rising device Download PDFInfo
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- CN113242623A CN113242623A CN202110521831.3A CN202110521831A CN113242623A CN 113242623 A CN113242623 A CN 113242623A CN 202110521831 A CN202110521831 A CN 202110521831A CN 113242623 A CN113242623 A CN 113242623A
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- 238000005338 heat storage Methods 0.000 title claims abstract description 24
- 230000000630 rising effect Effects 0.000 title claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 239000012782 phase change material Substances 0.000 claims abstract description 16
- 239000011148 porous material Substances 0.000 claims abstract description 8
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
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- 229910052802 copper Inorganic materials 0.000 claims description 4
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses a metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature rising device, which comprises: an insulating tube; a fluid-proof layer disposed on an inner wall of the insulating tube; the two end plates are symmetrically and fixedly arranged at two ends of the insulating tube, and a plurality of through holes are formed in the end plates; a porous metal body filled inside the insulating tube; wherein phase change materials are filled in the pores of the porous metal body; a plurality of flow pipes embedded in the porous metal body and arranged in one-to-one correspondence with the through holes, both ends of the flow pipes being fixedly supported in the two opposite through holes, respectively; and the electromagnetic coil is spirally wound on the outer wall of the insulating tube. The metal electromagnetic induction heating-phase change heat storage pipeline type fluid heating device provided by the invention can realize uniform heating of fluid and improve the heating efficiency and the temperature stability.
Description
Technical Field
The invention belongs to the technical field of electromagnetic heating, and particularly relates to a metal electromagnetic induction heating-phase change heat storage pipeline type fluid heating device.
Background
Along with the development of industrial technologies such as electromagnetic coil heating, fluid heating and infrared heating modes, the requirements on the internal structure of electromagnetic heating equipment and selected induction media are increasingly higher, and the traditional resistance wire heating is difficult to meet the characteristics of heating uniformity, high heating efficiency, temperature stability and the like.
When traditional resistance wire and electric heat coil heated the object, can carry out thermal conduction to the object through the heater, can have great thermal inertia during the heating, and heating efficiency is lower, and energy utilization is rateed lowly, can not full play and act on. When the temperature exceeds a rated value in the traditional heating mode, special cooling equipment is often needed to enable the temperature to reach a specified value, accurate control on the temperature cannot be achieved, and the actual situation is difficult to meet. In the electric heating process, the traditional electric coil heating has the defects of uneven heating, low temperature rise efficiency and poor thermal stability, so that the working performance of the electric coil heating is greatly influenced.
Therefore, it is necessary to design an electromagnetic heating device which has good heating uniformity, fast temperature rising efficiency and good temperature stability and can adapt to various complex environments.
Disclosure of Invention
The invention aims to provide a metal electromagnetic induction heating-phase change heat storage pipeline type fluid heating device, which can uniformly heat fluid and improve the heating efficiency and the temperature stability.
The technical scheme provided by the invention is as follows:
a metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature rising device comprises:
an insulating tube;
a fluid-proof layer disposed on an inner wall of the insulating tube;
the two end plates are symmetrically and fixedly arranged at two ends of the insulating tube, and a plurality of through holes are formed in the end plates;
a porous metal body filled inside the insulating tube;
wherein phase change materials are filled in the pores of the porous metal body;
a plurality of flow pipes embedded in the porous metal body and arranged in one-to-one correspondence with the through holes, both ends of the flow pipes being fixedly supported in the two opposite through holes, respectively;
and the electromagnetic coil is spirally wound on the outer wall of the insulating tube.
Preferably, the outer side of the electromagnetic coil is wrapped with an insulating layer.
Preferably, the metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature increasing device further comprises:
the flame-retardant layer is arranged on the outer side of the heat-insulating layer in a wrapping manner; and
and the fireproof layer is arranged outside the flame-retardant layer in a wrapping manner.
Preferably, the metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature increasing device further comprises:
the fluid inlet pipe is coaxially and fixedly connected to one end of the insulating pipe;
the outflow pipe is coaxially and fixedly connected to the other end of the insulating pipe; and
the fluid outlet pipe is coaxially and fixedly arranged in the fluid outlet pipe, and a fluid mixing cavity is formed between the fluid outlet plate and the adjacent end plate; the fluid outlet plate is provided with a plurality of fluid outlet holes.
Preferably, the through holes are arranged along the axial direction of the insulating tube, and the through holes are distributed on the end plate in a central symmetry and uniform distribution manner.
Preferably, the fluid outlet holes are arranged along an axial direction of the fluid pipe, and the plurality of fluid outlet holes are distributed on the fluid plate symmetrically and uniformly.
Preferably, the inner diameter of the inflow tube and the inner diameter of the outflow tube are the same as the inner diameter of the fluid-tight layer.
Preferably, the porous metal body is made of copper or aluminum and has a pore diameter of 3mm or less.
Preferably, the insulating tube is made of ceramic fibers; the fluid-proof layer adopts an organic silicon high-temperature coating.
The invention has the beneficial effects that:
(1) compared with the prior art, the invention adopts the porous metal body with good electromagnetic induction heating characteristic, realizes more uniform heat distribution generated in the space through the electromagnetic induction of the porous metal, and can improve the effective utilization of the integral heat of the porous metal; and the weight of the heating device can be reduced, the strength of the heating device can be ensured, and the vibration reduction and sound absorption effects of the heating device can be improved.
(2) The invention adopts the structure of combining the porous metal body and the phase-change material, the heat released by the electromagnetic induction of the porous metal body can be stored by the phase-change material, and the rapid and uniform increase of the fluid temperature is ensured under the dual actions of the electromagnetic induction heating of the porous metal body and the heat storage of the phase-change material in the porous metal body.
(3) The temperature control module is arranged in the invention, so that the temperature of the fluid outlet can be monitored in real time, and the accurate control of the temperature of the fluid outlet is realized, thereby providing a control basis for electromagnetic induction heating, controlling the temperature to be adjusted in a certain range, enhancing the stability of the hot fluid and meeting the requirements of actual working conditions.
Drawings
Fig. 1 is an axial sectional view of a metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature increasing device according to the present invention.
Fig. 2 is a schematic view of the internal structure of the insulating tube according to the present invention.
Fig. 3 is a schematic view of the combined structure of the porous metal body and the phase change material according to the present invention.
Fig. 4 is a schematic view of the end plate structure according to the present invention.
Fig. 5 is a schematic view of a construction of an outlet fluid plate according to the present invention.
Fig. 6 is a schematic diagram of heat generated by the porous metal body induced eddy current according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in fig. 1 to 5, the present invention provides a metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature increasing device, which mainly comprises: insulating tube 110, fluid barrier 120, two end plates 131, 132, porous metal body 140, flow-through tube 150, electromagnetic coil 160, insulating layer 170, fire retardant layer 180, and fire retardant layer 190.
The insulating tube 110 is a hollow tubular structure, an inlet pipe 111 is coaxially and fixedly connected to an inlet end of the insulating tube 110, and an outlet pipe 112 is coaxially and fixedly connected to an outlet end of the insulating tube 110. The inner wall of the insulating tube 110 is coated with a fluid-proof layer 120. The inner diameters of the inlet fluid pipe 111 and the outlet fluid pipe 112 are the same as the inner diameter of the insulating pipe 110 coated with the fluid-proof layer 120, that is, the inner diameters of the inlet fluid pipe 111 and the outlet fluid pipe 112 are the same as the inner diameter of the fluid-proof layer 120. Two end plates 131 and 132 are symmetrically and fixedly arranged at two ends of the insulating tube 110, and a plurality of through holes 131a and 132a are respectively arranged on the end plates 131 and 132; the two end plates 131 and 132 are identical in shape and structure.
The porous metal body 140 is filled in a space formed by the inner wall of the insulating tube 110 and the two end plates 131 and 132; the phase change material 141 is filled in the pores of the porous metal body 140. The plurality of flow tubes 150 are embedded in the porous metal body 140, and both ends of the flow tubes 150 are respectively disposed in one-to-one correspondence with the through holes 131a and the through holes 132a, and one end of the flow tube 150 is fixedly supported in the through hole 131a and the other end is fixedly supported in the through hole 132a disposed opposite to the through hole 131 a. The end plates 131 and 132 can be used to both encapsulate the filled porous metal body 140 and to support the flow tube 150.
The electromagnetic coil 160 is spirally wound on the outer wall of the insulating tube 110, and an insulating layer 170 is provided to wrap the outside of the electromagnetic coil 160. A flame-retardant layer 180 is wrapped outside the heat-insulating layer 170; the outer side of the flame retardant layer 180 is wrapped with a fire retardant layer 190.
In the present embodiment, the flame retardant layer 180 is made of glass fiber. The insulating layer 170 may be made of glass, diatomite, expanded vermiculite, etc., so as to maintain the temperature of the device to the maximum. The fire-proof layer 190 is required to have high temperature resistance and good heat insulation performance, and may be made of rock wool board, glass wool, expanded polystyrene board, etc.
Preferably, the insulating tube 110 is made of ceramic fiber, which has the advantages of excellent electrical insulating property, low thermal capacity, low thermal conductivity, high flexibility, excellent heat insulating property and easy processing. The fluid-proof layer 120 is made of an organosilicon high-temperature-resistant coating, which is a coating product mainly made of organosilicon and can exert strong capability in the fields of fluid resistance, high temperature resistance and the like.
The porous metal body 140 is disposed inside the insulating tube 110 and functions as a skeleton. The porous metal body 140 has a honeycomb structure and can be made by foaming and sintering a metal material, the inner pores of the porous metal body 140 are polygonal (can be rectangular, pentagonal or hexagonal), the porous metal body 140 is made of aluminum or copper, and the pore diameter is not more than 3 mm; the porous metal body 140 has the advantages of low density, high vibration damping capacity, and good sound absorption performance.
As shown in fig. 6, the electromagnetic coil 160 is connected to a high-frequency ac power source, and when the electromagnetic coil 160 is energized, a strong alternating electromagnetic field is generated in the space, and when the alternating electromagnetic field passes through the porous metal body 140, an induced electromotive force is generated in the porous metal body 140; the induced electromotive force generates an induced eddy current in the porous metal body 140, and the induced eddy current is converted into heat in the porous metal body 140; the phase change material 141 filled in the porous metal body 140 receives heat transfer, and physical properties of the phase change material 141 change due to temperature change, so that a large amount of heat is absorbed and stored in a phase change process, and the stability and uniformity of the temperature of the fluid passing through the pipeline can be ensured by releasing heat through the phase change material in the process of not applying electromagnetic heating.
Preferably, the phase change material 141 may be an inorganic hydrous salt phase change energy storage material, and Na is used2SO4·10H2O, which has a high latent heat (245kJ kg)-1) Good heat-conducting property, good chemical stability, no toxicity and low price, and can effectively improve the heat-conducting coefficient and can also enhance the heat-conducting coefficient by adding the enhanced heat-conducting materials such as expanded graphite, nano copper and the likeTo maintain the phase transition temperature of the pure material.
Preferably, the through holes 131a and the through holes 132a are both arranged along the axial direction of the insulating tube 110, and the plurality of through holes 131a (132a) are uniformly distributed on the end plate 131(132) in a centrosymmetric manner; thereby uniformly distributing the flow-through tubes 150 in the insulating tube 110, and improving the heating uniformity of the fluid in the flow-through tubes 150.
As shown in fig. 1 and 5, an outlet fluid plate 112a is coaxially and fixedly disposed in the outlet fluid pipe 112, and a fluid mixing chamber 112b is formed between the outlet fluid plate 112a and the adjacent end plate 132; the outlet body plate 112a has a plurality of outlet body holes 112 aa. After being heated, the fluid flows into the fluid mixing chamber 112b between the fluid plate 112a and the adjacent end plate 132 through the outlet of the flow pipe 150, is uniformly mixed in the fluid mixing chamber 112b, and then flows out of the temperature increasing device through the fluid hole 112aa, thereby further improving the uniformity of the fluid temperature. Meanwhile, the flow rate and quantity of the fluid can be controlled by the structure in which the fluid plate 112a is provided.
Further preferably, the fluid holes 112aa are arranged along the axial direction of the fluid pipe 112, and a plurality of fluid holes 112aa are distributed on the fluid plate 112a in a central symmetry manner.
The metal electromagnetic induction heating-phase change heat storage pipeline type fluid heating device further comprises a temperature controller (not shown in the figure), wherein the temperature controller is used for monitoring the area temperature in the insulating pipe 110, electrically connecting the temperature controller with a high-frequency alternating current power supply, and adjusting the alternating magnetic strength generated by the electromagnetic coil 160 by changing the current of the high-frequency alternating current power supply; thereby controlling the temperature within the insulated pipe 110 to avoid over-or under-temperature, further enhancing thermal fluid stability.
The temperature controller comprises a heating area switch, switches such as a temperature adjusting button, a heating opening button and an emergency stop button, and can be a common temperature control device on the market.
The working process of the metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature rising device provided by the invention is as follows: the electromagnetic coil 160 is electrified to generate a strong alternating electromagnetic field in the space, and an induced electromotive force is generated in the porous metal body 140; the induced electromotive force generates an induced eddy current in the porous metal body 140, thereby converting into heat in the porous metal body 140. The cold fluid enters the flow pipe 150 through the fluid inlet pipe 111, is heated by the heat generated by the porous metal body in the flow pipe 150, flows into the fluid mixing chamber 112b between the fluid plate 112a and the end plate 132 adjacent thereto, is uniformly mixed in the fluid mixing chamber 112b, and then flows out of the temperature increasing device through the fluid outlet holes 112 aa. In addition, in the process of heating the fluid by the porous metal body 140, the phase change material 141 filled in the porous metal body 140 receives the heat transfer, and the physical property of the phase change material 141 changes due to the change of the temperature, so that a large amount of heat is absorbed and stored in the phase change process, and the stability and uniformity of the temperature of the fluid passing through the pipeline can be ensured by releasing the heat through the phase change material in the process of not applying electromagnetic heating.
The porous metal body 140 has good thermal conductivity, a portion of heat is absorbed by the fluid passing through the device, thereby increasing the temperature rise efficiency, and another portion of heat is transferred to the phase change material 141 for energy storage. In the working process, in order to avoid overhigh or overlow temperature, the temperature of the area in the insulating tube 110 is detected through the temperature controller, the alternating magnetic strength generated by the electromagnetic coil 160 is adjusted by changing the current of the high-frequency alternating current power supply, the temperature is adjusted within a certain range, and the stability of the hot fluid can be enhanced.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature rising device is characterized by comprising:
an insulating tube;
a fluid-proof layer disposed on an inner wall of the insulating tube;
the two end plates are symmetrically and fixedly arranged at two ends of the insulating tube, and a plurality of through holes are formed in the end plates;
a porous metal body filled inside the insulating tube;
wherein phase change materials are filled in the pores of the porous metal body;
a plurality of flow pipes embedded in the porous metal body and arranged in one-to-one correspondence with the through holes, both ends of the flow pipes being fixedly supported in the two opposite through holes, respectively;
and the electromagnetic coil is spirally wound on the outer wall of the insulating tube.
2. The metal electromagnetic induction heating-phase change heat storage pipeline type fluid heating device as claimed in claim 1, wherein an insulating layer is wrapped outside the electromagnetic coil.
3. The metal electromagnetic induction heating-phase change heat storage pipe type fluid temperature increasing device according to claim 2, further comprising:
the flame-retardant layer is arranged on the outer side of the heat-insulating layer in a wrapping manner; and
and the fireproof layer is arranged outside the flame-retardant layer in a wrapping manner.
4. The metallic electromagnetic induction heating-phase change heat storage pipeline type fluid temperature increasing device as claimed in claim 1, 2 or 3, further comprising:
the fluid inlet pipe is coaxially and fixedly connected to one end of the insulating pipe;
the outflow pipe is coaxially and fixedly connected to the other end of the insulating pipe; and
the fluid outlet pipe is coaxially and fixedly arranged in the fluid outlet pipe, and a fluid mixing cavity is formed between the fluid outlet plate and the adjacent end plate; the fluid outlet plate is provided with a plurality of fluid outlet holes.
5. The metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature increasing device as claimed in claim 4, wherein the through holes are arranged along the axial direction of the insulating pipe, and the through holes are uniformly distributed on the end plate in a centrosymmetric manner.
6. The metallic electromagnetic induction heating-phase change heat storage tubular fluid temperature increasing device of claim 5, wherein the fluid outlet holes are arranged along an axial direction of the fluid pipe, and the plurality of fluid outlet holes are distributed on the fluid plate symmetrically and uniformly.
7. The metallic electromagnetic induction heating-phase change heat storage tubular fluid temperature increasing device according to claim 6, wherein an inner diameter of the fluid inlet pipe and an inner diameter of the fluid outlet pipe are the same as an inner diameter of the fluid-proof layer.
8. The metal electromagnetic induction heating-phase change heat storage pipeline type fluid heating device as claimed in claim 7, wherein the porous metal body is made of copper or aluminum, and the pore diameter is less than 3 mm.
9. The metal electromagnetic induction heating-phase change heat storage pipeline type fluid temperature increasing device as claimed in claim 8, wherein the insulating pipe is made of ceramic fiber.
10. The metal electromagnetic induction heating-phase change heat storage pipeline type fluid heating device as claimed in claim 9, wherein the fluid-proof layer is a silicone high-temperature coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110521831.3A CN113242623B (en) | 2021-05-13 | 2021-05-13 | Pipeline type fluid temperature rising device for metal electromagnetic induction heating-phase change heat storage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110521831.3A CN113242623B (en) | 2021-05-13 | 2021-05-13 | Pipeline type fluid temperature rising device for metal electromagnetic induction heating-phase change heat storage |
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| CN113242623B CN113242623B (en) | 2024-04-30 |
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| H. ZEROUG: "《A versatile low power test bench for induction heating》", 《2013 15TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE)》, 31 December 2013 (2013-12-31), pages 1 * |
| 苏岚: "《热金属气压成型电磁感应加热有限元模拟》", 《材料导报》, no. 24, 31 December 2017 (2017-12-31), pages 182 * |
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