CN212658119U - Heat exchanger of regenerative heat engine and regenerative heat engine - Google Patents
Heat exchanger of regenerative heat engine and regenerative heat engine Download PDFInfo
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- CN212658119U CN212658119U CN202021257872.3U CN202021257872U CN212658119U CN 212658119 U CN212658119 U CN 212658119U CN 202021257872 U CN202021257872 U CN 202021257872U CN 212658119 U CN212658119 U CN 212658119U
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- 239000012530 fluid Substances 0.000 claims abstract description 138
- 239000013529 heat transfer fluid Substances 0.000 claims abstract description 55
- 230000000712 assembly Effects 0.000 claims description 22
- 238000000429 assembly Methods 0.000 claims description 22
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 11
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 abstract description 3
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
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- 229910052786 argon Inorganic materials 0.000 description 5
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- 238000005219 brazing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
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- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model relates to a heat transfer technical field provides a heat exchanger and backheat type heat engine of backheat type heat engine, the heat exchanger of backheat type heat engine includes: a housing having an accommodating chamber formed therein; the heat exchange assembly is arranged in the accommodating cavity and comprises a plurality of heat exchange cylinders which are sleeved with each other; a fluid channel for circulating heat transfer fluid is formed between two adjacent heat exchange cylinders; and a gas channel for gas working medium circulation is arranged in the wall of each heat exchange cylinder. The utility model provides a heat exchanger of backheating heat engine, its simple structure, preparation are convenient, have realized the high-efficient heat exchange of outside heat transfer fluid with the inside working medium of backheating heat engine, and the leakproofness is good, and the security performance is high, long service life, and heat exchanger structure as an organic whole does not have unnecessary spare part, and heat transfer fluid's intermediate layer runner procedure is long, and heat transfer fluid's pressure drop loss is little, has improved the heat exchange efficiency of heat exchanger effectively.
Description
Technical Field
The utility model relates to a heat transfer technical field especially relates to a heat exchanger and backheat type heat engine of backheat type heat engine.
Background
The regenerative heat engine is an important external combustion heat engine and mainly comprises technical forms of a Stirling heat engine, a thermoacoustic heat engine, a VM (Vuillemier) heat engine and the like. The regenerative heat engine constructs a working temperature zone through a dividing wall type high-low temperature heat exchanger, transmits external heat to an internal high-pressure gas working medium, and realizes heat-power conversion by utilizing a core component, namely the regenerator, so that the external heat is converted into mechanical energy. Based on the characteristics of external combustion, high-pressure sealing property and the like of the regenerative heat engine, the regenerative heat engine has important application prospects in the fields of solar photo-thermal power generation, combined supply of cold, heat and electricity, space power supplies and the like.
The basic structure of the regenerative heat engine mainly comprises a thermal power conversion unit and a phase modulation unit, wherein the discharger is the phase modulation unit. The thermal power conversion unit serving as a core component mainly comprises a high-temperature heat exchanger, a heat regenerator and a low-temperature heat exchanger which are in a sandwich assembly structure. At present, a high-temperature heat exchanger and a low-temperature heat exchanger of a regenerative heat engine generally adopt a dividing wall type structure, and mainly adopt structural forms such as a shell-tube type structure, a plate-fin type structure and the like. The tube side of the shell-and-tube heat exchanger is fed with a heat engine gas working medium, and the shell side is fed with an external heat transfer fluid; plate-fin heat exchangers generally employ an inner and outer fin structure, the inner fin exchanges heat with a gas working medium of the heat engine, and the outer fin exchanges heat with a heat transfer fluid. In principle, both of these heat exchanger structures can be used for high and low temperature heat exchangers of regenerative heat engines, but the heat exchanger structure selected for practical application depends on the heat exchange temperature, heat exchange power and characteristics of the heat transfer fluid. It is common to use plate-fin type at low heat exchange rates and shell-and-tube type at high heat exchange rates. For common heat exchange fluids such as water, heat transfer oil, molten salt and the like, the two heat exchanger structures are suitable, for special heat exchange fluids such as heat transfer fluids and the like, the shell and tube heat exchanger has higher potential safety hazard due to more welding points, and the plate-fin heat exchanger has higher safety but cannot meet the requirement of high-efficiency heat exchange under high heat exchange quantity.
In view of this, the present invention is proposed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a heat exchanger of backheating heat engine.
The utility model discloses still provide a backheat formula heat engine.
According to the utility model discloses heat exchanger of backheating formula heat engine of first aspect embodiment, include:
a housing having an accommodating chamber formed therein;
the heat exchange assembly is arranged inside the accommodating chamber;
the heat exchange assembly comprises a plurality of heat exchange cylinders which are sleeved with each other;
a fluid channel for circulating heat transfer fluid is formed between two adjacent heat exchange cylinders;
and a gas channel for gas working medium circulation is arranged in the wall of each heat exchange cylinder.
According to an embodiment of the present invention, the top and the bottom of each heat exchange cylinder are welded to the top and the bottom of the adjacent heat exchange cylinder to form an integral structure;
the two heat exchange cylinders are welded to form a top part and a bottom part which are integrated, and the cylinder walls of the two adjacent heat exchange cylinders which are opposite to each other surround to form the fluid channel for the circulation of the heat transfer fluid.
Specifically, after every two layers of nested heat exchange cylinders are nested, the upper parts and the lower parts of the adjacent heat exchange cylinders are welded to form an integral structure, and a cylindrical hollow area formed between the two coaxial metal cylinders is a fluid channel for circulating heat transfer fluid.
According to an embodiment of the present invention, the wall thickness of the middle portion of the wall of the heat exchange cylinder is smaller than the wall thickness of the top and the bottom of the wall of the heat exchange cylinder.
Particularly, the wall of the heat exchange cylinder is arranged along the axial direction and has a middle wall thickness smaller than the wall thicknesses of two ends, and the arrangement mode is convenient for forming a fluid channel between two adjacent heat exchange cylinders.
According to an embodiment of the present invention, the heat exchange tube is made of stainless steel or high temperature alloy steel.
Specifically, the heat exchange cylinder is made of stainless steel or high-temperature alloy steel which is incompatible with the heat transfer fluid, so that the fluid channel formed by the heat exchange cylinder can realize heat exchange of the special heat exchange fluid.
In one embodiment, the heat exchange cylinders are I-shaped coaxial metal cylinders with thick upper ends and thick lower ends and thin middle, and after every two layers of heat exchange cylinders are nested, the two heat exchange cylinders are connected at the thick upper ends and the thick lower ends through high-temperature brazing, argon arc welding or electron beam welding.
According to an embodiment of the present invention, the end surface of the wall of the heat exchange cylinder is uniformly provided with a plurality of through holes penetrating the wall of the heat exchange cylinder;
the track of the through hole in the wall of the heat exchange cylinder forms the gas channel for the circulation of the gas working medium.
Particularly, the two end faces of the heat exchange cylinder are provided with the plurality of through holes which are uniformly distributed along the axial direction, so that a gas channel is provided for the gas working medium to enter and exit the heat exchanger, and the heat exchange area between the gas working medium and the heat transfer fluid is increased.
According to an embodiment of the invention, the heat transfer fluid comprises at least liquid metal.
The heat transfer fluid may be any fluid having a good heat conductivity, such as a liquid metal.
Particularly, heat conduction fluid such as liquid metal can the utility model provides an in the heat exchanger, realize the heat transfer, guarantee heat exchanger safety, stable operation simultaneously, realize the requirement of high-efficient heat transfer.
According to an embodiment of the present invention, the housing is provided with a fluid inlet and a fluid outlet;
and the heat transfer fluid flows into the fluid channel from the fluid inlet, exchanges heat with the gas working medium in the gas channel and flows out from the fluid outlet.
Particularly, the fluid inlet and the fluid outlet are respectively welded with the shell, and the fluid inlet and the fluid outlet are collinear in the axial direction, the fluid inlet, the fluid channel and the fluid outlet form a channel for the heat transfer fluid to enter and exit the heat exchanger, and the fluid channel is uniformly distributed in multiple layers, so that sufficient and uniform heat exchange can be realized with gas working media in the gas channel, and the requirement of high-efficiency heat exchange is met.
According to an embodiment of the present invention, the housing is cylindrical, one end of the housing is provided with an end cover, and a set of the heat exchange assembly is arranged inside the housing;
the axial direction of the heat exchange cylinder and the axial direction of the shell are arranged in the same direction;
an inlet channel communicated with each layer of fluid channel is arranged in the fluid inlet;
and an outlet channel communicated with each layer of fluid channel is arranged in the fluid outlet.
Particularly, an implementation mode of unilateral heat exchange is provided, wherein an end cover is arranged on one side, the other side is opened, a gas working medium enters the shell from the opened part through the conveying device, and then enters the gas channel to realize the heat exchange with the heat transfer fluid in the fluid channel.
According to one embodiment of the utility model, the shell is in a cylindrical shape, and at least two groups of heat exchange assemblies are arranged at intervals inside the shell;
the axial direction of the heat exchange cylinder and the axial direction of the shell are arranged in the same direction;
inlet channels corresponding to each group of heat exchange assemblies are arranged in the fluid inlets, and the inlet channels are arranged in the corresponding heat exchange assemblies and communicated with each layer of fluid channels;
the fluid outlet is internally provided with outlet channels corresponding to each group of heat exchange assemblies, and the outlet channels are arranged in the corresponding heat exchange assemblies and communicated with each layer of fluid channels.
Particularly, the two-side heat exchange implementation mode is provided, two sets of heat exchange assemblies are arranged in the shell, the shell is arranged along the two axial sides in an open mode, gas working media enter the shell through the opening part of the conveying device, then the gas working media enter the gas channel in each set of heat exchange assemblies, and heat exchange between the gas working media and heat transfer fluid in the fluid channel is achieved.
According to the utility model discloses regenerative heat engine of second aspect embodiment, including foretell a regenerative heat engine's heat exchanger.
The embodiment of the utility model provides an in above-mentioned one or more technical scheme, one of following technological effect has at least: the utility model discloses simple structure, the preparation is convenient, has realized the high-efficient heat exchange of outside heat transfer fluid with the inside working medium of backheating formula heat engine, and the leakproofness is good, and the security performance is high, long service life, heat exchanger structure as an organic whole, no unnecessary spare part, heat transfer fluid's intermediate layer runner flow path is long, and heat transfer fluid's pressure drop loss is little, has improved the heat exchange efficiency of heat exchanger effectively.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a first schematic view of an overall assembly relationship of a regenerative heat engine heat exchanger according to an embodiment of the present invention;
fig. 2 is a second schematic view of an overall assembly relationship of a regenerative heat engine heat exchanger according to an embodiment of the present invention;
fig. 3 is a third schematic view of an overall assembly relationship of a regenerative heat engine heat exchanger according to an embodiment of the present invention;
fig. 4 is a fourth schematic view of an overall assembly relationship of a regenerative heat engine heat exchanger according to an embodiment of the present invention;
fig. 5 is an enlarged schematic view of a portion a of fig. 4 illustrating an overall assembly relationship of a regenerative heat engine heat exchanger according to an embodiment of the present invention;
fig. 6 is a first schematic view of an overall assembly relationship of a regenerative heat engine heat exchanger according to an embodiment of the present invention;
fig. 7 is a second schematic view of an overall assembly relationship of a regenerative heat engine heat exchanger according to an embodiment of the present invention;
fig. 8 is a third schematic view of an overall assembly relationship of a regenerative heat engine heat exchanger according to an embodiment of the present invention;
fig. 9 is an enlarged schematic view of a portion B in fig. 8 illustrating an overall assembly relationship of the regenerative heat engine heat exchanger according to an embodiment of the present invention.
Reference numerals:
1: a housing; 101: a fluid inlet; 102: a fluid outlet; 103: an end cap; 104: an inlet channel; 105: an outlet channel;
2: a heat exchange tube;
3: and a through hole.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 to 5 are schematic diagrams showing the first, second, third, fourth and a part a of the overall assembly relationship of a regenerative heat engine heat exchanger according to an embodiment of the present invention. As can be seen from FIGS. 1 to 5, the heat exchanger provided by the present invention comprises a housing 1 and an end cover 103 disposed at one end of the housing 1, wherein the other end of the housing 1 is disposed in an open manner. The housing 1 is provided with a fluid inlet 101 and a fluid outlet 102, and as a preferred embodiment, the fluid inlet 101 and the fluid outlet 102 are symmetrically arranged on two sides of the housing 1.
Furthermore, a heat exchange assembly is arranged inside the shell 1, the heat exchange assembly comprises a plurality of heat exchange cylinders 2 which are sleeved with each other, a fluid channel is formed between every two heat exchange cylinders 2, a gas channel for gas working media to flow through is arranged on the cylinder wall of each heat exchange cylinder 2, heat transfer fluid enters the fluid channel from the fluid inlet 101, and flows out from the fluid outlet 102 after fully exchanging heat with the gas working media in the gas channel in the fluid channel.
Further, the fluid inlet 101 and the fluid outlet 102 of the casing 1 are communicated with the fluid channel of each layer, that is, the heat exchange cylinders 2 at the rest positions except the heat exchange cylinder 2 at the innermost layer are provided with gaps corresponding to the fluid inlet 101 and the fluid outlet 102, the gaps form an inlet channel 104 at the fluid inlet 101 side of the casing 1 and an outlet channel 105 at the fluid outlet 102 side.
Furthermore, a through hole 3 penetrating the top and the bottom is formed in the wall of the heat exchange cylinder 2, and the through hole 3 forms a gas channel in the wall of the heat exchange cylinder 2.
Further, as can be seen from the enlarged schematic view of part a in fig. 5, each heat exchange cylinder 2 has an i-shaped structure with a wide top and a wide bottom and a narrow middle. After being nested, the two adjacent heat exchange cylinders 2 are welded together.
Fig. 6 to 9 are enlarged schematic views of a first part, a second part, a third part and a B part of the overall assembly relationship of the regenerative heat engine heat exchanger provided in the embodiment of the present invention. As can be seen from fig. 6 to 9, the heat exchanger provided for you in rush hours comprises a housing 1 and two sets of heat exchange assemblies arranged inside the housing 1. The housing 1 is provided with a fluid inlet 101 and a fluid outlet 102, and as a preferred embodiment, the fluid inlet 101 and the fluid outlet 102 are symmetrically arranged on two sides of the housing 1.
Furthermore, each group of heat exchange assemblies comprises a plurality of heat exchange cylinders 2 which are sleeved with each other, a fluid channel is formed between every two heat exchange cylinders 2, a gas channel for gas working media to flow through is arranged on the cylinder wall of each heat exchange cylinder 2, heat transfer fluid enters the fluid channel from a fluid inlet 101, and flows out from a fluid outlet 102 after fully exchanging heat with the gas working media in the gas channel in the fluid channel.
Further, the fluid inlet 101 and the fluid outlet 102 of the casing 1 are communicated with the fluid channel of each layer, that is, the heat exchange cylinders 2 at the rest positions except the heat exchange cylinder 2 at the innermost layer are provided with gaps corresponding to the fluid inlet 101 and the fluid outlet 102, the gaps form an inlet channel 104 at the fluid inlet 101 side of the casing 1 and an outlet channel 105 at the fluid outlet 102 side.
As a preferred solution, as shown in fig. 7, each fluid inlet 101 corresponds to a different heat exchange assembly and is formed with a separate inlet channel 104, and each fluid outlet 102 corresponds to a different heat exchange assembly and is formed with a separate outlet channel 105.
Furthermore, a through hole 3 penetrating the top and the bottom is formed in the wall of the heat exchange cylinder 2, and the through hole 3 forms a gas channel in the wall of the heat exchange cylinder 2.
Further, as can be seen from the enlarged schematic diagram of part B in fig. 9, each heat exchange cylinder 2 in each group of heat exchange assemblies is in an i-shaped structure with a wide top and a wide bottom and a narrow middle. After being nested, the two adjacent heat exchange cylinders 2 are welded together.
Generally speaking, the utility model discloses simple structure, the preparation is convenient, has realized the high-efficient heat exchange of outside heat transfer fluid with the inside working medium of backheating heat engine, and the leakproofness is good, and the security performance is high, long service life, heat exchanger structure as an organic whole, and no unnecessary spare part, heat transfer fluid's intermediate layer runner flow is long, and heat transfer fluid's pressure drop loss is little, has improved the heat exchange efficiency of heat exchanger effectively.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In one embodiment, as shown in fig. 1-5, the present example provides a heat exchanger of a regenerative heat engine, comprising: a housing 1, wherein a containing chamber is formed inside the housing 1; the heat exchange assembly is arranged inside the accommodating chamber; the heat exchange assembly comprises a plurality of heat exchange cylinders 2 which are sleeved with each other; a fluid channel for circulating heat transfer fluid is formed between two adjacent heat exchange cylinders 2; and a gas channel for gas working medium circulation is arranged in the wall of each heat exchange cylinder 2.
In one embodiment of the present embodiment, as shown in fig. 2 to 4, the top and bottom of each heat exchange cylinder 2 are welded to the top and bottom of the adjacent heat exchange cylinder 2 to form an integral structure; the two heat exchange cylinders 2 are welded to form a top part and a bottom part which are integrated, and the cylinder walls of the two adjacent heat exchange cylinders opposite to each other surround to form a fluid passage for circulating heat transfer fluid.
Specifically, after every two layers of nested heat exchange cylinders 2 are nested, the upper part and the lower part of the adjacent heat exchange cylinders 2 are welded to form an integral structure, and a cylindrical hollow area formed between the two coaxial metal cylinders is a fluid channel for circulating heat transfer fluid.
In one embodiment of this embodiment, as shown in fig. 4 and 5, the wall thickness of the middle portion of the wall of the heat exchange cartridge 2 is less than the wall thickness of the top and bottom portions of the wall of the heat exchange cartridge 2.
Specifically, the wall of the heat exchange tube 2 is arranged along the axial direction, and the wall thickness of the middle part is smaller than that of the two ends, so that a fluid channel is conveniently formed between the two adjacent heat exchange tubes 2.
In one embodiment of the present embodiment, the heat exchange cartridge 2 is made of stainless steel or high temperature alloy steel.
Specifically, the heat exchange tube 2 is made of stainless steel or high-temperature alloy steel which is incompatible with the heat transfer fluid, so that the fluid channel formed by the heat exchange tube 2 can realize heat exchange of the special heat exchange fluid.
In an embodiment of the present invention, as shown in fig. 4 and 5, the heat exchange cylinders 2 are i-shaped coaxial metal cylinders with thick upper and lower ends and thin middle, and after each two layers of heat exchange cylinders 2 are nested, the two heat exchange cylinders 2 are connected by high temperature brazing, argon arc welding or electron beam welding at the thick upper and lower ends.
In one embodiment of the present embodiment, as shown in fig. 2 to 5, a plurality of through holes 3 penetrating through the wall of the heat exchange tube 2 are uniformly distributed on the end surface of the wall of the heat exchange tube 2; the track of the through hole 3 in the wall of the heat exchange cylinder 2 forms a gas channel for the circulation of gas working medium.
Particularly, a plurality of through holes 3 are uniformly distributed along the axial direction on two end faces of the heat exchange cylinder 2, so that a gas channel is provided for gas working media to enter and exit the heat exchanger, and the heat exchange area between the gas working media and heat transfer fluid is increased.
It should be noted that the coaxial heat exchange cylinders 2 of each layer are axially and uniformly provided with through holes 3. The diameter of the through hole 3 is not larger than the wall thickness of the coaxial heat exchange cylinder 2, the through hole 3 is the fluid exchanging heat with the heat transfer fluid in the heat exchanger, the gas working medium can be but not limited to the working medium gas of a regenerative heat engine such as helium, argon and the like, and the working pressure is between 3-20 MPa.
In one embodiment of this embodiment, the heat transfer fluid includes at least a liquid metal.
The heat transfer fluid may be any fluid having a good heat conductivity, such as a liquid metal.
Particularly, heat conduction fluid such as liquid metal can the utility model provides an in the heat exchanger, realize the heat transfer, guarantee heat exchanger safety, stable operation simultaneously, realize the requirement of high-efficient heat transfer.
It should be noted that the heat transfer fluid includes, but is not limited to, liquid metal, water, heat transfer oil, molten salt, etc., and the working temperature of the heat transfer fluid does not exceed 800 ℃.
In one embodiment of the present embodiment, as shown in fig. 3 to 5, the housing 1 is provided with a fluid inlet 101 and a fluid outlet 102; the heat transfer fluid flows into the fluid channel from the fluid inlet 101, exchanges heat with the gas working medium in the gas channel, and flows out from the fluid outlet 102.
Specifically, the fluid inlet 101 and the fluid outlet 102 are respectively welded with the shell 1, the fluid inlet 101 and the fluid outlet 102 are collinear in the axial direction, the fluid inlet 101, the fluid channel and the fluid outlet 102 form a channel for heat transfer fluid to enter and exit the heat exchanger, and the fluid channels are uniformly distributed in multiple layers, so that sufficient and uniform heat exchange can be fully realized with gas working media in the gas channel, and the requirement of high-efficiency heat exchange is met.
In one embodiment of the present embodiment, as shown in fig. 1, the housing 1 is cylindrical, one end of which is provided with an end cover 103, and the inside of which is provided with a group of heat exchange assemblies; wherein, the axial direction of the heat exchange cylinder 2 is arranged in the same direction as the axial direction of the shell 1; an inlet channel 104 communicated with each fluid channel is arranged in the fluid inlet 101; the fluid outlet 102 is internally provided with an outlet channel 105 communicating with each fluid channel.
Specifically, an embodiment of unilateral heat exchange is provided, wherein an end cover 103 is arranged on one side, the other side is arranged in an open mode, a gas working medium enters the shell 1 from the open part through the conveying device, and then enters the gas channel to realize the heat exchange with the heat transfer fluid in the fluid channel.
In one embodiment, as shown in fig. 6-9, the present example provides a heat exchanger of a regenerative heat engine, comprising: a housing 1, wherein a containing chamber is formed inside the housing 1; the heat exchange assembly is arranged inside the accommodating chamber; the heat exchange assembly comprises a plurality of heat exchange cylinders 2 which are sleeved with each other; a fluid channel for circulating heat transfer fluid is formed between two adjacent heat exchange cylinders 2; and a gas channel for gas working medium circulation is arranged in the wall of each heat exchange cylinder 2.
In one embodiment of the present embodiment, as shown in fig. 6 to 8, the top and bottom of each heat exchange cylinder 2 are welded to the top and bottom of the adjacent heat exchange cylinder 2 to form an integral structure; the two heat exchange cylinders 2 are welded to form a top part and a bottom part which are integrated, and the cylinder walls of the two adjacent heat exchange cylinders opposite to each other surround to form a fluid passage for circulating heat transfer fluid.
Specifically, after every two layers of Tongzhou heat exchange cylinders 2 are nested, the upper part and the lower part of the adjacent heat exchange cylinders 2 form an integral structure through welding, and a cylindrical hollow area formed between the two coaxial metal cylinders is a fluid channel for circulating heat transfer fluid.
In one embodiment of this embodiment, as shown in fig. 8 and 9, the wall thickness of the middle portion of the wall of the heat exchange cartridge 2 is less than the wall thickness of the top and bottom portions of the wall of the heat exchange cartridge 2.
Specifically, the wall of the heat exchange tube 2 is arranged along the axial direction, and the wall thickness of the middle part is smaller than that of the two ends, so that a fluid channel is conveniently formed between the two adjacent heat exchange tubes 2.
In one embodiment of the present embodiment, the heat exchange cartridge 2 is made of stainless steel or high temperature alloy steel.
Specifically, the heat exchange tube 2 is made of stainless steel or high-temperature alloy steel which is incompatible with the heat transfer fluid, so that the fluid channel formed by the heat exchange tube 2 can realize heat exchange of the special heat exchange fluid.
In an embodiment of the present invention, as shown in fig. 8 and 9, the heat exchange cylinders 2 are i-shaped coaxial metal cylinders with thick upper and lower ends and thin middle, and after each two layers of heat exchange cylinders 2 are nested, the two heat exchange cylinders 2 are connected by high temperature brazing, argon arc welding or electron beam welding at the thick upper and lower ends.
In an embodiment of the present embodiment, as shown in fig. 6 to 9, a plurality of through holes 3 penetrating through the wall of the heat exchange tube 2 are uniformly distributed on the end surface of the wall of the heat exchange tube 2; the track of the through hole 3 in the wall of the heat exchange cylinder 2 forms a gas channel for the circulation of gas working medium.
Particularly, a plurality of through holes 3 are uniformly distributed along the axial direction on two end faces of the heat exchange cylinder 2, so that a gas channel is provided for gas working media to enter and exit the heat exchanger, and the heat exchange area between the gas working media and heat transfer fluid is increased.
It should be noted that the coaxial heat exchange cylinders 2 of each layer are axially and uniformly provided with through holes 3. The diameter of the through hole 3 is not larger than the wall thickness of the coaxial heat exchange cylinder 2, the through hole 3 is the fluid exchanging heat with the heat transfer fluid in the heat exchanger, the gas working medium can be but not limited to the working medium gas of a regenerative heat engine such as helium, argon and the like, and the working pressure is between 3-20 MPa.
In one embodiment of this embodiment, the heat transfer fluid includes at least a liquid metal.
Particularly, liquid metal can the utility model provides an in the heat exchanger, realize the heat transfer, guarantee heat exchanger safety, stable operation simultaneously, realize the requirement of high-efficient heat transfer.
It should be noted that the heat transfer fluid includes, but is not limited to, liquid metal, water, heat transfer oil, molten salt, etc., and the working temperature of the heat transfer fluid does not exceed 800 ℃.
In one embodiment of the present embodiment, as shown in fig. 7 to 9, the housing 1 is provided with a fluid inlet 101 and a fluid outlet 102; the heat transfer fluid flows into the fluid channel from the fluid inlet 101, exchanges heat with the gas working medium in the gas channel, and flows out from the fluid outlet 102.
Specifically, the fluid inlet 101 and the fluid outlet 102 are respectively welded with the shell 1, the fluid inlet 101 and the fluid outlet 102 are collinear in the axial direction, the fluid inlet 101, the fluid channel and the fluid outlet 102 form a channel for heat transfer fluid to enter and exit the heat exchanger, and the fluid channels are uniformly distributed in multiple layers, so that sufficient and uniform heat exchange can be fully realized with gas working media in the gas channel, and the requirement of high-efficiency heat exchange is met.
In one embodiment of the present embodiment, as shown in fig. 6 to 9, the housing 1 is cylindrical, and at least two sets of heat exchange assemblies are arranged inside the housing at intervals; wherein, the axial direction of the heat exchange cylinder 2 is arranged in the same direction as the axial direction of the shell 1; the fluid inlet 101 is internally provided with an inlet channel 104 which is arranged corresponding to each group of heat exchange assemblies, and the inlet channel 104 is arranged in the corresponding heat exchange assembly and communicated with each fluid channel; the fluid outlet 102 is internally provided with an outlet channel 105 corresponding to each group of heat exchange assemblies, and the outlet channel 105 is arranged in the corresponding heat exchange assembly and communicated with each layer of fluid channel.
Particularly, an implementation mode of bilateral heat exchange is provided, two sets of heat exchange assemblies are arranged in a shell 1, the shell 1 is arranged along the two axial sides in an open mode, a gas working medium enters the shell 1 through a conveying device from an open part, and then the gas working medium enters a gas channel in each set of heat exchange assemblies to realize heat exchange between heat transfer fluid in a fluid channel.
It should be noted that the embodiments shown in fig. 1 to 5 and the embodiments shown in fig. 6 to 9 may be combined with each other to constitute other embodiments not shown in the drawings. In other words, fig. 1 to 5 and 6 to 9 are only schematic and do not strictly distinguish between the embodiments.
In one embodiment, there is also provided a regenerative heat engine comprising a heat exchanger of a regenerative heat engine as described above.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of the technical solutions should be covered by the scope of the claims of the present invention.
Claims (10)
1. A heat exchanger for a regenerative heat engine, comprising:
a housing having an accommodating chamber formed therein;
the heat exchange assembly is arranged inside the accommodating chamber;
the heat exchange assembly comprises a plurality of heat exchange cylinders which are sleeved with each other;
a fluid channel for circulating heat transfer fluid is formed between every two adjacent heat exchange cylinders;
and a gas channel for gas working medium circulation is arranged in the wall of each heat exchange cylinder.
2. A heat exchanger of a regenerative heat engine according to claim 1,
the top and the bottom of each heat exchange cylinder are respectively welded with the top and the bottom of the adjacent heat exchange cylinder to form an integral structure;
the two heat exchange cylinders are welded to form a top part and a bottom part which are integrated, and the cylinder walls of the two adjacent heat exchange cylinders which are opposite to each other surround to form the fluid channel for the circulation of the heat transfer fluid.
3. A heat exchanger for a regenerative heat engine according to claim 2, wherein the wall thickness of the intermediate portion of the wall of said heat exchange cartridge is less than the wall thickness of the top and bottom portions of the wall of said heat exchange cartridge.
4. A heat exchanger for a regenerative heat engine according to claim 2, wherein said heat exchange cartridge is made of stainless steel or high temperature alloy steel.
5. A heat exchanger of a regenerative heat engine according to claim 1,
a plurality of through holes which penetrate through the wall of the heat exchange cylinder are uniformly distributed on the end surface of the wall of the heat exchange cylinder;
the track of the through hole in the wall of the heat exchange cylinder forms the gas channel for the circulation of the gas working medium.
6. A heat exchanger of a regenerative heat engine according to claim 1, wherein said heat transfer fluid comprises at least a liquid metal.
7. A heat exchanger for a regenerative heat engine according to any one of claims 1 to 6,
the shell is provided with a fluid inlet and a fluid outlet;
and the heat transfer fluid flows into the fluid channel from the fluid inlet, exchanges heat with the gas working medium in the gas channel and flows out from the fluid outlet.
8. A heat exchanger of a regenerative heat engine according to claim 7,
the shell is arranged in a cylindrical shape, one end of the shell is provided with an end cover, and a group of heat exchange assemblies are arranged in the shell;
the axial direction of the heat exchange cylinder and the axial direction of the shell are arranged in the same direction;
an inlet channel communicated with each layer of fluid channel is arranged in the fluid inlet;
and an outlet channel communicated with each layer of fluid channel is arranged in the fluid outlet.
9. A heat exchanger of a regenerative heat engine according to claim 7,
the shell is cylindrical, and at least two groups of heat exchange assemblies are arranged in the shell at intervals;
the axial direction of the heat exchange cylinder and the axial direction of the shell are arranged in the same direction;
inlet channels corresponding to each group of heat exchange assemblies are arranged in the fluid inlets, and the inlet channels are arranged in the corresponding heat exchange assemblies and communicated with each layer of fluid channels;
the fluid outlet is internally provided with outlet channels corresponding to each group of heat exchange assemblies, and the outlet channels are arranged in the corresponding heat exchange assemblies and communicated with each layer of fluid channels.
10. A regenerative heat engine, comprising: a heat exchanger for a regenerative heat engine as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021257872.3U CN212658119U (en) | 2020-06-30 | 2020-06-30 | Heat exchanger of regenerative heat engine and regenerative heat engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021257872.3U CN212658119U (en) | 2020-06-30 | 2020-06-30 | Heat exchanger of regenerative heat engine and regenerative heat engine |
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| CN212658119U true CN212658119U (en) | 2021-03-05 |
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| CN202021257872.3U Active CN212658119U (en) | 2020-06-30 | 2020-06-30 | Heat exchanger of regenerative heat engine and regenerative heat engine |
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| Country | Link |
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| CN (1) | CN212658119U (en) |
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2020
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