CN113154908A - Heat exchanger with hexagonal tube bundles in modular arrangement - Google Patents
Heat exchanger with hexagonal tube bundles in modular arrangement Download PDFInfo
- Publication number
- CN113154908A CN113154908A CN202110418294.XA CN202110418294A CN113154908A CN 113154908 A CN113154908 A CN 113154908A CN 202110418294 A CN202110418294 A CN 202110418294A CN 113154908 A CN113154908 A CN 113154908A
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- Prior art keywords
- tube
- header
- heat exchanger
- tube bundle
- cylinder
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- 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
- F28D7/10—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 one within the other, e.g. concentrically
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- 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
- F28F9/02—Header boxes; End plates
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- 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
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
Abstract
The invention particularly relates to a heat exchanger with a hexagonal tube bundle in modular arrangement, which comprises a cylinder (3) and a tube bundle module (4); a plurality of groups of tube bundle modules (4) for independent heat exchange are arranged in the cylinder (3) in a hexagonal modular manner in a plane. The heat exchanger with the hexagonal tube bundles in the modularized arrangement solves the problems that the existing heat exchanger with the hexagonal tube bundles in the modularized arrangement has low utilization rate of the internal space, can not be subjected to modularized expansion according to different heat exchange quantity requirements, and has more external pipeline interfaces.
Description
Technical Field
The invention relates to the technical field of modular and compact design of heat transfer tube bundles, in particular to a heat exchanger with hexagonal tube bundles in modular arrangement.
Background
The working principle of the pipe-in-pipe heat exchanger is as follows: on the shell side, fluid enters the shell from the inlet connecting pipe, one part of the fluid enters the inner side of the inner pipe of the sleeve, the other part of the fluid is on the outer side of the outer pipe of the sleeve, and the fluid exchanges heat with the fluid on the tube side in the flowing process and finally flows out from the shell side outlet. In the tube side, fluid enters from a tube side inlet, is distributed to an inlet tube box through a branch tube, then enters the annular space of the heat transfer sleeve from the inlet tube box, flows in the annular space, is subjected to double-sided heat exchange of the inner tube and the outer tube, and is collected to an outlet tube box and finally flows out from a tube side outlet.
The existing tube-in-tube heat exchanger tube bundle is arranged in a rectangular mode, the arrangement results in low space utilization rate, large equipment diameter, large number of external pipelines and weak expansion capability of tube bundle modules.
Disclosure of Invention
Based on this, it is necessary to adopt the rectangle to arrange to current tube-in-tube heat exchanger tube bank, leads to space utilization to hang down, and equipment diameter is great, and outside pipeline is many, and the problem that tube bank module expansion ability is not strong provides a heat exchanger that tube bank is hexagon modularization and arranges.
In order to achieve the above purpose, the invention provides the following technical scheme:
a heat exchanger with hexagonal tube bundles in modular arrangement comprises a cylinder and a plurality of groups of tube bundle modules; the plurality of groups of tube bundle modules are arranged inside the cylinder body in a hexagonal modularization mode in a plane.
The working principle is as follows: heat transfer tube bank arranges according to the hexagon modularization, compares in the rectangle modularization and arranges, and equipment barrel external diameter can design littleer, and space utilization is higher, because every a set of tube bank module independently carries out the heat transfer, consequently can arrange the rule according to the hexagon, increases module quantity and satisfies different heat transfer volume demands, realizes the modularization extension.
Furthermore, a shell pass outlet and a shell pass inlet are respectively arranged on two sides of the cylinder body; the upper end of the cylinder is provided with a tube pass header, and the upper end of the tube pass header is respectively provided with a tube pass outlet and a tube pass inlet; a plurality of groups of tube bundle modules are arranged in the cylinder body in a hexagonal modular manner in a plane, and the tube bundle modules in each group are closely arranged; the upper end of each group of the tube bundle modules is communicated with a tube side header, and the lower end of each group of the tube bundle modules is independently communicated with the lower end of one branch tube; the upper end of each branch pipe is communicated with the pipe pass inlet, and the lower end of each branch pipe penetrates through the pipe pass header and extends into the cylinder; the outer edge of the hexagonal modularly arranged tube bundle module is provided with a surrounding tube; a supporting plate is arranged between the surrounding cylinder and the cylinder body.
Further, the tube pass header comprises an upper flat cover and a lower flat cover, and the upper flat cover and the lower flat cover are connected to form an annular space; the upper end of the upper flat cover is respectively provided with a tube pass outlet and a tube pass inlet; the lower end of the lower flat cover is connected with the cylinder to form an accommodating space, and a plurality of groups of tube bundle modules are arranged in the accommodating space according to a hexagon in a plane; and the upper end of each group of the tube bundle modules is communicated with the annular space.
Furthermore, the tube pass inlet is positioned in the middle of the upper end of the upper flat cover, and the branch tube penetrates through the tube pass header and extends into the middle of the interior of the barrel.
Furthermore, the tube side header also comprises a plurality of flow blocking rods, the upper ends of the flow blocking rods are connected with the lower ends of the lower flat covers, and the flow blocking rods are arranged between every two adjacent three tube bundle modules.
Furthermore, the enclosure cylinder is formed by splicing a plurality of plates and is tightly attached to the outer contour of the tube bundle modules arranged along the hexagon.
Further, the number of tube bundle modules (4) is expanded according to the rule of 3n × (n + 1).
Furthermore, each tube bundle module comprises a collecting pipe, an outlet pipe box, an inlet pipe box, a plurality of transition pipes and a plurality of heat transfer sleeves, the upper end of the collecting pipe is communicated with the pipe side collecting box, the lower end of the collecting pipe is connected with the upper end of the outlet pipe box, the upper end of each heat transfer sleeve is connected with the outlet pipe box through one transition pipe, the lower end of each heat transfer sleeve is connected with the inlet pipe box through one transition pipe, and the lower end of the inlet pipe box is connected with the branch pipe.
Further, the heat transfer sleeves are arranged in a hexagonal shape, and the number of the heat transfer sleeves is expanded according to the rule of 3[ n (n +1) -4 ].
The invention has the beneficial technical effects that:
the invention solves the problems that the prior tube bundle modularized arrangement heat exchanger has low utilization rate of the internal space, can not carry out modularized expansion according to different heat exchange quantity requirements, and has more external pipeline interfaces.
Drawings
FIG. 1 is a front view of a heat exchanger having a hexagonal modular arrangement of tube bundles according to the present invention;
FIG. 2 is a front view of a single tube bundle module;
FIG. 3 is a schematic cross-sectional view of a heat exchanger having a hexagonal modular arrangement of tube bundles according to the present invention;
FIG. 4 is an enlarged partial cross-sectional view of a heat exchanger having a hexagonal modular arrangement of tube bundles according to the present invention;
FIG. 5 is a schematic view of the flow of tube side fluid in a hexagonal modular arrangement of the tube bundle of the present invention;
FIG. 6 is a schematic view of the shell-side fluid flow direction for a hexagonal modular arrangement of tube bundles according to the present invention.
In the figure, 1, a flat cover is arranged; 2. a lower flat cover; 3. a barrel; 4. a tube bundle module; 5. a support plate; 6. a surrounding cylinder; 7. a shell-side outlet; 8. a branch pipe; 9. a flow blocking rod; 10. a shell-side inlet; 11. a tube side outlet; 12. a tube side inlet; 13. a header; 14. an outlet pipe box; 15. a transition duct; 16. a heat transfer sleeve; 17. an inlet header.
Detailed Description
In the description of the present invention, it is to be understood that the terms "left end", "right end", "upper end", "lower end", "above", "below", "outside", "inside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
A heat exchanger with hexagonal tube bundles in modular arrangement comprises a cylinder 3 and a plurality of groups of tube bundle modules 4; the groups of tube bundle modules 4 are arranged inside the cylinder 3 in a hexagonal modular manner in a plane.
The heat transfer tube bundles are arranged in a hexagonal modularization mode, compared with the rectangular modularization arrangement mode, the outer diameter of the equipment barrel can be designed to be smaller, the space utilization rate is higher, the height of the equipment is reduced by 20%, the volume can be reduced by 30%, the weight can be reduced by 15% under the same heat transfer efficiency, and the heat transfer tube bundles can be applied to occasions with limitations on installation space and weight. Because each group of tube bundle modules 4 independently exchange heat, the number of the modules can be increased to meet the requirements of different heat exchange amounts according to the hexagonal arrangement rule, and the modular expansion is realized.
Further, referring to fig. 1, a heat exchanger with a hexagonal tube bundle in a modular arrangement comprises a cylinder 3 and a plurality of groups of tube bundle modules 4; a shell pass outlet 7 and a shell pass inlet 10 are respectively arranged at two sides of the cylinder 3; a tube pass header is arranged at the upper end of the cylinder 3, and a tube pass outlet 11 and a tube pass inlet 12 are respectively arranged at the upper end of the tube pass header; a plurality of groups of tube bundle modules 4 are arranged in the cylinder 3 in a hexagonal modular manner in a plane, and the tube bundle modules 4 in each group are closely arranged; the upper end of each group of the tube bundle modules 4 is communicated with a tube side header, and the lower end of each group of the tube bundle modules 4 is respectively and independently communicated with the lower end of one branch tube 8; the upper end of each branch pipe 8 is communicated with a pipe pass inlet 12, and the lower end of each branch pipe penetrates through a pipe pass header and extends into the barrel 3; the outer edge of the hexagonal modularly arranged tube bundle module 4 is provided with a surrounding tube 6; a supporting plate 5 is arranged between the surrounding cylinder 6 and the cylinder body 3.
The tube pass inlet 11 and the tube pass outlet 12 adopt an integrated design, and only one tube pass inlet 12 and one tube pass outlet 11 are arranged, so that the structure reduces the number of external pipelines, reduces pipeline welding seams, improves the safety and reliability of equipment, and saves external space; the surrounding cylinder 6 divides the shell pass fluid into an ascending channel and a descending channel; the support plate 5 plays a role in supporting connection, and is positioned between the shell-side inlet 10 and the shell-side outlet 7 to divide the shell-side fluid into a hot side and a cold side; the branch pipes 8 are arranged at the tube side inlet 12, each branch pipe 8 corresponds to each group of tube bundle modules 4, and the tube side fluid can be uniformly distributed in each tube bundle module 4, so that each tube bundle module 4 forms an independent heat exchange unit.
The working principle is as follows: in the shell side, the shell side fluid enters the shell from a shell side inlet 10, and due to the blocking of the surrounding tube 6 and the supporting plate 5, the shell side fluid firstly flows upwards, passes over the surrounding tube 6, flows downwards after going up, passes through the tube bundle module 4, exchanges heat with the tube side fluid, reaches the bottom of the barrel 3, then upwards enters an annular gap formed by the surrounding tube 6 and the barrel 3, and finally flows out from a shell side outlet 7. On the tube side, the tube side fluid enters from the tube side inlet 12 and is uniformly distributed into the tube bundle module 4 through the branch pipes 8, the fluid in the tube bundle module 4 flows upwards, and the fluid in all the tube bundle modules 4 is collected in the tube side header and then enters the tube side outlet 11.
Further, the tube pass header comprises an upper flat cover 1 and a lower flat cover 2, and the upper flat cover 1 and the lower flat cover 2 are connected to form an annular space; the upper end of the upper flat cover 1 is respectively provided with a tube pass outlet 11 and a tube pass inlet 12; the lower end of the lower flat cover 2 is connected with the cylinder 3 to form an accommodating space, and a plurality of groups of tube bundle modules 4 are arranged in the accommodating space according to a hexagon in a plane; the middle part of the lower flat cover 2 is provided with a plurality of hexagonally arranged through holes, the lower ends of the branch pipes 8 penetrate through the through holes and extend into the barrel 3, and the upper end of each pipe bundle module 4 is communicated with the annular space through one through hole.
Further, the tube pass inlet 12 is located in the middle of the upper end of the upper flat cover 1, the branch tube 8 penetrates through the tube pass header and extends into the middle of the inside of the barrel 3, and the branch tube 8 does not occupy extra space and is compact in structure.
Further, the tube side header also comprises a plurality of flow blocking rods 9, the upper ends of the flow blocking rods 9 are connected with the lower end of the lower flat cover 2, and the flow blocking rods 9 are arranged in gaps among every three adjacent tube bundle modules 4.
The surrounding cylinder 6 and the flow blocking rod 9 are arranged in the cylinder 3, and a shell-side fluid channel is formed in the cylinder 3, so that the structure is beneficial to enabling fluid to be in full contact with the heat transfer sleeve, and the fluid can penetrate through the tube bundle area as much as possible, the fluid flow speed is increased, and the heat exchange efficiency is further increased.
Further, each tube bundle module 4 comprises a header 13, an outlet tube box 14, a plurality of transition tubes 15, a plurality of heat transfer sleeves 16 and an inlet tube box 17, wherein the upper end of the header 13 is communicated with the through holes on the lower flat cover 2, the lower end of the header 13 is connected with the upper end of the outlet tube box 14, the upper end of each heat transfer sleeve 16 is connected with the outlet tube box 14 through one transition tube 15, the lower end of each heat transfer sleeve 16 is connected with the inlet tube box 17 through one transition tube 15, and the lower end of the inlet tube box 17 is connected with the branch tube 8.
The inlet header 17 collects the fluid entering the manifold 8 and redistributes it to the transition tubes 15 into the heat transfer jacket 16 where the tube-side fluid exchanges heat into the outlet header 14 and into the tube-side header after collection by the header 13.
Further, the shroud ring 6 is formed by splicing a plurality of plates, is tightly attached along the outer contour of the tube bundle modules 4 arranged in a hexagon, and divides the shell pass fluid into an ascending section fluid and a descending section fluid.
Further, the heat transfer sleeves 16 are arranged in a hexagonal shape, the number of the heat transfer sleeves can be expanded according to the rule of 3[ n (n +1) -4], each group of tube bundle modules 4 can form an independent heat exchange unit, and the operation of other tube bundle modules 4 is not influenced by the failure of one group.
Further, the number of the tube bundle modules 4 can be expanded according to the rule of 3n x (n +1), and each group of tube bundle modules 4 can independently exchange heat, so that the number of the modules can be increased according to the hexagonal arrangement rule to meet the requirements of different heat exchange amounts.
Further, the number of the branch pipes 8 corresponds to the number of the tube bundle modules 4, and the number of the branch pipes can be expanded.
The cylinder 3 is a pressure vessel shell; the shell-side inlet 10 refers to a structure where fluid enters the shell-side cylinder 3; the shell-side outlet 7 refers to a structure of the fluid flowing out of the shell-side cylinder 3; the shroud 6 refers to a structure that closely surrounds the outer edges of the tube bundle modules 4; the supporting plate 5 is a layer of flat plate arranged between the surrounding cylinder 6 and the shell pass cylinder 3, and has the functions of supporting the surrounding cylinder to connect the surrounding cylinder with the cylinder and isolating shell pass fluid into a hot side and a cold side, and the tube pass inlet is specifically a structure that the tube pass fluid flows into the branch pipe; the branch pipe 8 refers to a structure in which the tube-side fluid flows into the inlet header 17; the inlet header 17 refers to the structure of the tube side fluid flowing into the transition tube 15; the transition tube 15 refers to a structure in which tube-side fluid flows into the annular space of the heat transfer sleeve 16; the heat transfer sleeve 16 is a double-layer pipeline for circulating cold and hot fluids, an outer pipe of the heat transfer sleeve is a straight pipe with ribs on the outer wall, an inner pipe of the heat transfer sleeve is a spiral pipe, the outer side of the outer pipe and the inner side of the inner pipe are simultaneously contacted with shell-side fluid, an annular space between the outer pipe and the inner pipe is filled with the shell-side fluid, and hot fluid and cold fluid realize high-efficiency heat exchange through the sleeve structure; the outlet header 14 refers to a structure in which the tube side fluid flows into the header 13 after heat exchange; the header 13 refers to a structure in which fluid flows into the tube side header; the tube pass header refers to a structure for collecting tube pass fluid; the flow blocking rod 9 is a structure occupying the space of the shell pass, the upper end of the flow blocking rod is connected with the tube pass header, and the flow blocking rod is used for blocking shell pass fluid from flowing through the gap of the tube bundle module 4; tube side outlet 11 refers to the structure of the tube side fluid exiting the tube side header.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A heat exchanger with a hexagonal tube bundle in modular arrangement is characterized by comprising a cylinder (3) and a plurality of groups of tube bundle modules (4); the groups of tube bundle modules (4) are arranged inside the cylinder (3) in a hexagonal modular manner in a plane.
2. The heat exchanger according to claim 1, wherein a shell-side outlet (7) and a shell-side inlet (10) are respectively arranged on both sides of the cylinder (3); a tube pass header is arranged at the upper end of the cylinder body (3), and a tube pass outlet (11) and a tube pass inlet (12) are respectively arranged at the upper end of the tube pass header; a plurality of groups of tube bundle modules (4) are arranged in the cylinder (3) in a hexagonal modular manner in a plane; the upper end of each group of the tube bundle modules (4) is communicated with a tube side header, and the lower end of each group of the tube bundle modules (4) is independently communicated with the lower end of one branch tube (8); the upper end of each branch pipe (8) is communicated with a pipe pass inlet (12), and the lower end of each branch pipe penetrates through a pipe pass header and extends into the barrel (3); the outer edge of the hexagonal modularly arranged tube bundle module (4) is provided with a surrounding tube (6); a support plate (5) is arranged between the surrounding cylinder (6) and the cylinder body (3).
3. The heat exchanger according to claim 2, characterized in that the tube side header comprises an upper flat cover (1) and a lower flat cover (2), the upper flat cover (1) and the lower flat cover (2) being connected to form an annular space; the upper end of the upper flat cover (1) is respectively provided with a tube pass outlet (11) and a tube pass inlet (12); the lower end of the lower flat cover (2) is connected with the barrel (3) to form an accommodating space, and a plurality of groups of tube bundle modules (4) are arranged in the accommodating space according to a hexagon in a plane; the upper end of each group of the tube bundle modules (4) is communicated with the annular space.
4. The heat exchanger according to claim 3, characterized in that the tube side inlet (12) is located in the middle of the upper end of the upper flat cover (1), and the branch tube (8) extends into the middle of the interior of the cylinder (3) through the tube side header.
5. The heat exchanger according to claim 2, wherein the tube side header further comprises a plurality of baffle rods (9), the upper ends of the baffle rods (9) are connected with the lower end of the lower flat cover (2), and the baffle rods (9) are arranged between every two adjacent groups of the tube bundle modules (4).
6. The heat exchanger according to claim 2, characterized in that the shroud (6) is formed by a plurality of plates which are joined to each other in a close-fitting manner along the outer contour of the hexagonal modularly arranged tube bundle modules (4).
7. Heat exchanger according to claim 1, characterized in that the number of tube bundle modules (4) is expanded according to the law of 3 nx (n + 1).
8. The heat exchanger according to any one of claims 1 to 7, wherein each group of the tube bundle modules (4) comprises a header (13), an outlet tube box (14), an inlet tube box (17), a plurality of transition tubes (15) and a plurality of heat transfer sleeves (16), wherein the upper end of the header (13) is communicated with the tube pass header, the lower end of the header (13) is connected with the upper end of the outlet tube box (14), the upper end of each heat transfer sleeve (16) is connected with the outlet tube box (14) through one transition tube (15), the lower end of each heat transfer sleeve (16) is connected with the inlet tube box (17) through one transition tube (15), and the lower end of the inlet tube box (17) is connected with one branch tube (8).
9. Heat exchanger according to claim 8, wherein the heat transfer sleeves (16) are arranged in a hexagonal pattern, the number expanding according to the law of 3[ n (n +1) -4 ].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110418294.XA CN113154908A (en) | 2021-04-19 | 2021-04-19 | Heat exchanger with hexagonal tube bundles in modular arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110418294.XA CN113154908A (en) | 2021-04-19 | 2021-04-19 | Heat exchanger with hexagonal tube bundles in modular arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN113154908A true CN113154908A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110418294.XA Pending CN113154908A (en) | 2021-04-19 | 2021-04-19 | Heat exchanger with hexagonal tube bundles in modular arrangement |
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| CN (1) | CN113154908A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353576A (en) * | 2021-12-17 | 2022-04-15 | 中核武汉核电运行技术股份有限公司 | Water supply heat shield sleeve and water supply heat shield calculation method thereof |
-
2021
- 2021-04-19 CN CN202110418294.XA patent/CN113154908A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353576A (en) * | 2021-12-17 | 2022-04-15 | 中核武汉核电运行技术股份有限公司 | Water supply heat shield sleeve and water supply heat shield calculation method thereof |
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