CN113124696A - Capillary tube heat exchanger assembled in block mode and assembling method thereof - Google Patents
Capillary tube heat exchanger assembled in block mode and assembling method thereof Download PDFInfo
- Publication number
- CN113124696A CN113124696A CN202110522462.XA CN202110522462A CN113124696A CN 113124696 A CN113124696 A CN 113124696A CN 202110522462 A CN202110522462 A CN 202110522462A CN 113124696 A CN113124696 A CN 113124696A
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- Prior art keywords
- tube
- heat exchanger
- capillary
- subunits
- tube plate
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- 238000000034 method Methods 0.000 title claims description 12
- 238000012546 transfer Methods 0.000 claims abstract description 39
- 239000012530 fluid Substances 0.000 claims abstract description 37
- 238000004891 communication Methods 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims description 25
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 9
- 239000001569 carbon dioxide Substances 0.000 claims description 9
- 238000010248 power generation Methods 0.000 claims description 5
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000005219 brazing Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Images
Classifications
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
- F28F9/0131—Auxiliary supports for elements for tubes or tube-assemblies formed by plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a capillary heat exchanger assembled in a block type, which comprises: the device comprises a shell, a first fluid inlet, a first fluid outlet, a second fluid inlet, a second fluid outlet and a first fluid outlet, wherein a pipe box space is formed inside the shell; a plurality of heat transfer tubes disposed within the tube box space and in communication with the first fluid inlet and the first fluid outlet; the baffle plates are provided with through holes matched with the arrangement mode of the heat transfer pipes, and each baffle plate penetrates through the heat transfer pipes through the through holes; and the tube plate comprises a plurality of tube plate subunits which can be assembled together, each tube plate subunit is provided with N tube holes, each tube hole is individually welded with one heat transfer tube, and N is an integer greater than or equal to 1.
Description
Technical Field
The invention relates to the technical field of fluid heat exchange, in particular to a capillary heat exchanger assembled in a block mode and an assembling method thereof.
Background
With the rise of the supercritical carbon dioxide power generation mode and the wide application of the supercritical carbon dioxide heat pump, the traditional heat exchanger is difficult to meet the requirements of a high-efficiency compact system, and a novel high-temperature high-pressure compact heat exchanger needs to be developed. Capillary heat exchanger structure is similar to traditional shell and tube type heat exchanger, compares traditional shell and tube type heat exchanger endurance capacity stronger, and heat transfer performance is better, and the compactness is also higher, can effectively reduce novel power generation system's volume, simultaneously, compares the high temperature high pressure heat exchanger of other types like printed circuit board heat exchanger, and capillary heat exchanger manufacturing cost is lower, at energy conversion modes such as carbon dioxide electricity generation and industrial production field, has wide application prospect.
The capillary tube has small diameter and large quantity, which is one of the main characteristics of the capillary tube heat exchanger. In a large capillary heat exchanger, the number of capillaries can reach thousands. The tube penetrating process of the capillary tube heat exchanger is very complicated due to small tube diameter, large quantity and dense arrangement, and most of labor and time consumption in the processing process of the capillary tube heat exchanger is concentrated in the tube penetrating step.
The existing capillary tube heat exchanger is processed similarly to the traditional shell-and-tube heat exchanger, the tube plate is of an integrated structure, and the capillary tubes are inserted into the tube plate and the baffle plate one by one in a manual tube inserting mode, so that the operation is complicated and the efficiency is low; meanwhile, the welding of the tube plate and the capillary tube is also completed in one step through vacuum brazing in a vacuum brazing furnace, and the vacuum brazing has certain welding problems, so that when the number of the capillary tubes is large, the probability of leakage of the tube plate and the capillary tubes due to poor welding is higher, the problem of leakage of the whole capillary tube heat exchanger is further caused, and the later-stage maintenance work is more complicated due to the large number of the capillary tubes. The traditional process flow is complicated, the processing production and the wide application of the capillary tube heat exchanger are greatly limited, and the cost of the capillary tube heat exchanger is at a higher level. The processing method of the capillary tube heat exchanger is improved, time and energy consumption caused by tube penetration and welding is reduced, the economy of the capillary tube heat exchanger is improved, and the method has important significance for efficient production and commercial application of the capillary tube heat exchanger.
Disclosure of Invention
In view of this, in order to reduce the overhaul work caused by the welding failure of a single heat transfer pipe and improve the pipe penetrating efficiency of the capillary heat exchanger, the application provides a capillary heat exchanger assembled in a block manner and an assembling method thereof.
The invention provides a capillary heat exchanger assembled in a block type, which comprises: the device comprises a shell, a first fluid inlet, a first fluid outlet, a second fluid inlet, a second fluid outlet and a first fluid outlet, wherein a pipe box space is formed inside the shell; a plurality of heat transfer tubes disposed within the tube box space and in communication with the first fluid inlet and the first fluid outlet; the baffle plates are provided with through holes matched with the arrangement mode of the heat transfer pipes, and each baffle plate penetrates through the heat transfer pipes through the through holes; and the tube plate comprises a plurality of tube plate subunits which can be assembled together, each tube plate subunit is provided with N tube holes, each tube hole is individually welded with one heat transfer tube, and N is an integer greater than or equal to 1.
In some embodiments, the plurality of tube sheet subunits are identical in shape and equal in size.
In some embodiments, the tube holes in each tube plate subunit are uniformly distributed.
In some embodiments, the tube sheet subunits are regular polygons.
In some embodiments, the tube sheet subunits are fan shaped.
In some embodiments, the tube sheet subunits are diamond shaped.
In some embodiments, the diameter d of the heat transfer tube is 1-3 mm.
In some embodiments, the tube center-to-center pitch p of adjacent two of the plurality of heat transfer tubes is 3 to 6 mm.
In some embodiments, the capillary heat exchanger is used for supercritical carbon dioxide power generation or supercritical carbon dioxide heat pump.
The invention provides an assembling method for the segmented capillary heat exchanger, which comprises the following steps: dividing the integrated tube plate into a plurality of tube plate subunits which are identical in shape and can be assembled together; completing pipe penetration of the plurality of pipe plate subunits, and welding each pipe plate subunit with the heat transfer pipe; welding a plurality of tube plate subunits together to obtain a tube plate; two tubesheets are positioned adjacent the first fluid inlet port and the first fluid outlet port, respectively.
The integrated tube plate is arranged into the plurality of tube plate subunits which can be welded together, the tube plate subunits and the heat exchange tube are welded firstly, and then the tube plate subunits are welded, so that the overhauling work of the whole capillary tube heat exchanger caused by the welding fault of one heat transfer tube can be reduced, and the welding efficiency is improved. In addition, the volume requirement on welding equipment such as a vacuum brazing furnace and the like can be reduced to a certain extent, and the applicability is stronger.
In addition, the integrated tube plate is provided with a plurality of tube plate subunits with the same shape and size, and the tube holes of each tube plate subunit are distributed at the same position, so that the tube penetrating of the tube plate subunits can be performed at one time, and the tube penetrating efficiency of the capillary tube heat exchanger is improved.
Drawings
FIG. 1 is a schematic structural diagram of a capillary tube heat exchanger;
FIG. 2 is a schematic structural view of an integrated tube sheet of a capillary tube heat exchanger;
fig. 3 is a schematic structural diagram of a tube plate obtained by welding a plurality of tube plate subunits according to embodiment 1 of the present invention;
FIG. 4 is a schematic structural view of a tube sheet sub-unit provided in example 1 of the present invention;
FIG. 5 is a schematic view of a plurality of tube sheet sub-units simultaneously piercing tubes according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a tube plate obtained by welding a plurality of tube plate subunits according to embodiment 2 of the present invention;
fig. 7 is a schematic structural diagram of a tube plate subunit provided in embodiment 2 of the present invention.
[ legends of drawings ]
1-a shell; 2-a channel space; 3-heat transfer tubes; 4-baffle plate; 5-a tube plate; 6-tube plate subunit; thin-first fluid inlet; thout-first fluid output; tcin — second fluid inlet; tcout — a second fluid output port; p-tube center distance between two adjacent heat transfer tubes; diameter of d-heat transfer pipe
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
The invention provides a capillary heat exchanger assembled in a block type, which comprises: the heat exchanger comprises a shell 1, a channel space 2, a heat transfer pipe 3, a baffle plate 4 and a pipe plate 5.
Fig. 1 is a schematic structural view of a capillary tube heat exchanger.
As shown in fig. 1, the capillary tube heat exchanger includes: a casing 1 having a channel space 2 formed therein, a first fluid inlet Thin and a first fluid outlet Thout provided at both ends of the casing 1, and a second fluid inlet Tcin and a second fluid outlet Tcout provided at the other both ends of the casing 1; a plurality of heat transfer tubes 3 provided in the tube box space 2 and communicating with the first fluid inlet Thin and the first fluid outlet Thout; a plurality of baffle plates 4 having through holes adapted to the arrangement of the plurality of heat transfer pipes 3, each baffle plate 4 being inserted through the heat transfer pipe 3 through the through hole; and the tube plate 5 comprises a plurality of tube plate subunits 6 which can be assembled together, wherein each tube plate subunit 6 is provided with N tube holes, each tube hole is separately welded with one heat transfer tube 3, and N is an integer greater than or equal to 1.
According to an embodiment of the invention, the plurality of tube sheet subunits 6 are identical in shape and equal in size.
According to an embodiment of the present invention, the tube holes in each tube plate subunit 6 are uniformly distributed.
According to an embodiment of the invention, the tube plate subunit 6 is a regular polygon.
According to an embodiment of the invention, the tube plate subunit 6 is fan-shaped.
According to an embodiment of the invention, the tube plate subunits 6 are diamond shaped.
According to the embodiment of the invention, the pipe diameter d of the heat transfer pipe is 1-3 mm, for example, 1mm, 2mm, 3 mm.
According to the embodiment of the invention, the tube center-to-center pitch p between adjacent two of the plurality of heat transfer tubes is 3 to 6mm, and may be, for example, 3mm, 4mm, 5mm, or 6 mm.
According to an embodiment of the invention, the capillary heat exchanger is used for supercritical carbon dioxide power generation or a supercritical carbon dioxide heat pump.
The invention provides an assembling method for the segmented capillary heat exchanger, which comprises the following steps: dividing the integrated tube plate into a plurality of tube plate subunits which are identical in shape and can be assembled together; completing pipe penetration of the plurality of pipe plate subunits, and welding each pipe plate subunit with the heat transfer pipe; welding a plurality of tube plate subunits together to obtain a tube plate; two tubesheets are positioned adjacent the first fluid inlet port and the first fluid outlet port, respectively.
To more clearly illustrate the features of the invention, the invention will be further described in connection with an embodiment of a capillary heat exchanger assembled in blocks.
Fig. 2 is a schematic structural diagram of an integrated tube sheet of a capillary tube heat exchanger. Fig. 3 is a schematic structural diagram of a tube plate obtained by welding a plurality of tube plate subunits according to embodiment 1 of the present invention.
Referring to fig. 2 and 3, an integrated tube plate of the original capillary heat exchanger is improved, and an integrated tube plate 5 is divided into a plurality of tube plate subunits 6 in regular hexagonal shapes. The tube plate subunits 6 are uniform in shape and size, and the tube holes are uniformly distributed.
Fig. 4 is a schematic structural diagram of a tube plate subunit provided in embodiment 1 of the present invention.
As shown in fig. 4, the number of tube holes of the tube plate subunit 6 is greatly reduced compared with the number of tube holes of the integrated tube plate 5.
Fig. 5 is a schematic view of a plurality of tube sheet sub-units simultaneously penetrating tubes according to an embodiment of the present invention.
As shown in fig. 5, when the tube plate subunits 6 are pierced, first all the tube plate subunits 6 are placed in order, so that the tube holes on each tube plate subunit 6 are correspondingly arranged in order, then the heat transfer tubes 3 with sufficient length are used, so that the heat transfer tubes 3 penetrate into a plurality of tube plate subunits 6 at a time, then the length of the heat transfer tubes 3 between two adjacent tube plate subunits 6 is equal to the whole length of the capillary tube heat exchanger according to the length requirement of the capillary tube heat exchanger, and then the heat transfer tubes 3 are sequentially cut off. Therefore, the tube penetrating work of the plurality of tube plate subunits 6 can be completed through one-time tube penetrating.
When the capillary tube heat exchanger is welded, each tube plate subunit 6 and the heat transfer tube 3 penetrating through the tube plate subunit are welded firstly, each tube plate subunit 6 is welded with the heat exchange tube 3 respectively, and after the tube plate subunits 6 are ensured to have no welding leakage, the tube plate subunits 6 are welded together in a corresponding welding mode, and the integral tube plate processing of the capillary tube heat exchanger is completed.
Because the quantity of the heat exchange tube of tube sheet subunit reduces by a wide margin, consequently the welding appears the possibility that reveals and reduces, simultaneously, when needs mend, tube sheet subunit also reduces the maintenance degree of difficulty because of having the quantity of less heat-transfer pipe.
Fig. 6 is a schematic structural diagram of a tube plate obtained by welding a plurality of tube plate subunits according to embodiment 2 of the present invention. Fig. 7 is a schematic structural diagram of a tube plate subunit provided in embodiment 2 of the present invention.
Referring to fig. 6 and 7, the integrated tube sheet of the original capillary heat exchanger is modified to divide the integrated tube sheet 5 into a plurality of fan-shaped tube sheet subunits 6. The tube plate subunits 6 are uniform in shape and size, and the tube holes are uniformly distributed. The number of pipe holes of the pipe plate subunit 6 is greatly reduced compared with the original number of pipe holes of the integrated pipe plate 5.
According to the pipe penetrating and welding process of the pipe plate unit mentioned in the embodiment 1, the pipe penetrating work of the capillary heat exchanger can be simplified, and the welding efficiency can be improved.
According to the embodiment of the invention, the integrated tube plate is arranged into the plurality of tube plate subunits which can be welded together, the tube plate subunits and the heat exchange tube are welded firstly, and then the tube plate subunits are welded together, so that the overhaul work of the whole capillary tube heat exchanger caused by the welding fault of one heat transfer tube can be reduced, and the welding efficiency is improved. In addition, the volume requirement on welding equipment such as a vacuum brazing furnace and the like can be reduced to a certain extent, and the applicability is stronger.
In addition, according to the embodiment of the invention, the integrated tube plate is provided with the plurality of tube plate subunits with the same shape and size, and the tube holes of each tube plate subunit are distributed at the same position, so that the plurality of tube plate subunits can be penetrated at one time, and the tube penetrating efficiency of the capillary tube heat exchanger is improved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A block-wise assembled capillary tube heat exchanger, comprising:
the device comprises a shell, a first fluid inlet and a first fluid outlet are formed in the shell, a second fluid inlet and a second fluid outlet are formed in the other two ends of the shell;
a plurality of heat transfer tubes disposed within the tube box space and in communication with the first fluid inlet and the first fluid outlet;
the baffle plates are provided with through holes matched with the arrangement mode of the heat transfer pipes, and each baffle plate penetrates through the heat transfer pipe through the through hole;
and the tube plate comprises a plurality of tube plate subunits which can be assembled together, each tube plate subunit is provided with N tube holes, each tube hole is individually welded with one heat transfer tube, and N is an integer greater than or equal to 1.
2. The capillary heat exchanger of claim 1, wherein the plurality of tube sheet subunits are identical in shape and equal in size.
3. The capillary tube heat exchanger of claim 1, wherein the tube holes in each tube plate sub-unit are uniformly distributed.
4. The capillary heat exchanger of claim 1, wherein the tube sheet subunits are regular polygons.
5. The capillary tube heat exchanger of claim 1, wherein the tube plate sub-units are fan-shaped.
6. The capillary heat exchanger of claim 1, wherein the tube sheet subunits are diamond shaped.
7. The capillary heat exchanger according to claim 1, wherein the tube diameter d of the heat transfer tube is 1 to 3 mm.
8. The capillary tube heat exchanger according to claim 1, wherein a tube center-to-center pitch p of adjacent two of the plurality of heat transfer tubes is 3 to 6 mm.
9. The capillary heat exchanger of claim 1, wherein the capillary heat exchanger is used in a supercritical carbon dioxide power generation or a supercritical carbon dioxide heat pump.
10. A method of assembling a segmented capillary tube heat exchanger as claimed in any one of claims 1 to 9, comprising:
dividing the integrated tube plate into a plurality of tube plate subunits which are identical in shape and can be assembled together;
the tube penetrating of the tube plate subunits is completed, and each tube plate subunit and the heat transfer tube are welded;
welding a plurality of the tube plate subunits together to obtain the tube plate;
the two tube sheets are respectively disposed at a position near the first fluid inlet and a position near the first fluid outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110522462.XA CN113124696A (en) | 2021-05-13 | 2021-05-13 | Capillary tube heat exchanger assembled in block mode and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110522462.XA CN113124696A (en) | 2021-05-13 | 2021-05-13 | Capillary tube heat exchanger assembled in block mode and assembling method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113124696A true CN113124696A (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110522462.XA Pending CN113124696A (en) | 2021-05-13 | 2021-05-13 | Capillary tube heat exchanger assembled in block mode and assembling method thereof |
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| Country | Link |
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| CN (1) | CN113124696A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113617041A (en) * | 2021-07-21 | 2021-11-09 | 简庄春 | Reboiler for alcohol processing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1513069A (en) * | 1975-10-01 | 1978-06-07 | Deggendorfer Werft Eisenbau | Reaction apparatus |
| US20090010821A1 (en) * | 2007-05-29 | 2009-01-08 | Manfred Lehr | Tube bundle reactors with pressure fluid cooling |
| CN111457763A (en) * | 2020-05-22 | 2020-07-28 | 中国科学院工程热物理研究所 | Capillary heat exchanger for cooling variable-property fluid |
| CN214842642U (en) * | 2021-05-13 | 2021-11-23 | 中国科学院工程热物理研究所 | Capillary heat exchanger assembled in blocks |
-
2021
- 2021-05-13 CN CN202110522462.XA patent/CN113124696A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1513069A (en) * | 1975-10-01 | 1978-06-07 | Deggendorfer Werft Eisenbau | Reaction apparatus |
| US20090010821A1 (en) * | 2007-05-29 | 2009-01-08 | Manfred Lehr | Tube bundle reactors with pressure fluid cooling |
| CN111457763A (en) * | 2020-05-22 | 2020-07-28 | 中国科学院工程热物理研究所 | Capillary heat exchanger for cooling variable-property fluid |
| CN214842642U (en) * | 2021-05-13 | 2021-11-23 | 中国科学院工程热物理研究所 | Capillary heat exchanger assembled in blocks |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113617041A (en) * | 2021-07-21 | 2021-11-09 | 简庄春 | Reboiler for alcohol processing |
| CN113617041B (en) * | 2021-07-21 | 2022-11-29 | 邳州市鑫盛创业投资有限公司 | Reboiler for alcohol processing |
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