CN113758056B - Shell-and-tube heat exchanger with refrigerant distribution device - Google Patents
Shell-and-tube heat exchanger with refrigerant distribution device Download PDFInfo
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- CN113758056B CN113758056B CN202111144836.5A CN202111144836A CN113758056B CN 113758056 B CN113758056 B CN 113758056B CN 202111144836 A CN202111144836 A CN 202111144836A CN 113758056 B CN113758056 B CN 113758056B
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- 238000009826 distribution Methods 0.000 title claims abstract description 157
- 239000003507 refrigerant Substances 0.000 title claims abstract description 63
- 238000007789 sealing Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000002826 coolant Substances 0.000 claims 7
- 239000000463 material Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
- F25B39/028—Evaporators having distributing means
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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
- F28D7/06—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 having a single U-bend
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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
- F28F11/00—Arrangements for sealing leaky tubes and conduits
- F28F11/02—Arrangements for sealing leaky tubes and conduits using obturating elements, e.g. washers, inserted and operated independently of each other
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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
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
- F28F9/0275—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple branch pipes
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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
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
- F25B2339/024—Evaporators with refrigerant in a vessel in which is situated a heat exchanger
- F25B2339/0242—Evaporators with refrigerant in a vessel in which is situated a heat exchanger having tubular elements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a shell-and-tube heat exchanger with a refrigerant distribution device, which comprises a refrigerant outlet pipe, a distribution structure, a pipe plate and a cylinder body, wherein the refrigerant outlet pipe is arranged on the refrigerant outlet pipe; the distribution structure comprises a refrigerant distribution pipe, a cover plate and an end cover, wherein the refrigerant distribution pipe is connected with the cover plate, the cover plate is connected with the end cover, and the end cover is connected with the tube plate; the refrigerant distributing pipe includes that one-level distributing pipe, one-level violently manage, second grade distributing pipe, second grade are violently managed and tertiary distributing pipe, and one-level distributing pipe is violently managed with the one-level and is linked together, and the one-level is violently managed and is linked together with the second grade distributing pipe, and the second grade is violently managed and is linked together with the tertiary distributing pipe with the second grade distributing pipe. The shell-and-tube heat exchanger has the advantages that the overall size is close to that of the existing product, the matching degree with the system is high, and the replacement is convenient. By arranging the inlet distribution structure and the arched baffle plate, the consumption of the heat exchange tubes is reduced by more than 30 percent.
Description
Technical Field
The invention belongs to the technical field of heat exchangers, and particularly relates to a shell-and-tube heat exchanger with a refrigerant distribution device.
Background
The shell-and-tube heat exchanger mainly comprises a cylinder, an end cover, a tube plate, a baffle plate, a heat exchange tube and other parts, and has wide application in various industrial fields due to the advantages of simple structure, strong adaptability, easy maintenance and the like. When a shell-and-tube heat exchanger is used as a central air conditioning evaporator, the existing structure has the following disadvantages: the required heat exchange amount is different and the heat exchange efficiency is low due to uneven distribution of working media in each heat exchange copper pipe; waste of heat exchange area increases cost; the sealing is difficult and the leakage is easy; complex processing, etc.
Disclosure of Invention
The invention aims to solve the problem that the existing shell-and-tube heat exchanger is low in working efficiency, and provides a shell-and-tube heat exchanger with a refrigerant distribution device, which can save the length of a heat exchange tube and greatly improve the working efficiency of the heat exchanger.
In order to achieve the purpose, the invention adopts the technical scheme that:
a shell-and-tube heat exchanger with a refrigerant distribution device comprises a refrigerant outlet pipe, a distribution structure, a pipe plate, an arch-shaped baffle plate and a cylinder body;
the distribution structure comprises a refrigerant distribution pipe, a cover plate and an end cover, wherein the refrigerant distribution pipe is connected with the cover plate, the cover plate is connected with the end cover, and the end cover is connected with the tube plate; the outlet of the heat exchange tube is connected with a refrigerant outlet tube;
the refrigerant distribution pipe comprises a primary distribution pipe, a primary transverse pipe, a secondary distribution pipe, a secondary transverse pipe and a tertiary distribution pipe, wherein the primary distribution pipe is communicated with the primary transverse pipe, the primary transverse pipe is communicated with the secondary distribution pipe, the secondary distribution pipe is communicated with the secondary transverse pipe, and the secondary transverse pipe is communicated with the tertiary distribution pipe; violently manage parallel arrangement with the second grade with the one-level, second grade distributing pipe and tertiary distributing pipe parallel arrangement, the one-level is violently managed and is set up with second grade distributing pipe is perpendicular.
The invention has the further improvement that the cover plate is provided with holes corresponding to the three-stage distribution pipes; the side wall of the tube plate is provided with a plurality of tube holes, and the tube holes are communicated with the heat exchange tubes.
The invention has the further improvement that the upper part of the side wall of the end cover is provided with a converging cavity which is communicated with a refrigerant outlet pipe; the lower part of the cover plate is provided with a plurality of cross-shaped three-stage distribution channels, and the centers of the three-stage distribution channels correspond to the holes on the cover plate; the tail end of each third-level distribution channel is provided with a straight-through hole, the straight-through holes are arranged along the thickness direction of the tube plate, the other side wall of the end cover is provided with a fourth-level distribution channel corresponding to the position of each straight-through hole, the center of the fourth-level distribution channel is communicated with the straight-through holes, the tail end of the fourth-level distribution channel is positioned at three vertex points of a quadrangle or a triangle taking the straight-through holes as the center, the tail end of the fourth-level distribution channel corresponds to the tube hole in the tube plate, the tube hole is communicated with the inlet of the heat exchange tube, the outlet of the heat exchange tube is communicated with the converging cavity, and the converging cavity is communicated with the refrigerant outlet tube.
The invention is further improved in that the heat exchange tubes are connected to the side wall of the tube plate by expansion joints.
The invention is further improved in that the end cover is semicircular in shape and the size of the end cover is the same as that of the cover plate.
The invention is further improved in that the number of the refrigerant distribution pipes is two, and each refrigerant distribution pipe is composed of two stages of distribution structures with the same structure.
The invention is further improved in that the distributing pipe is welded with the cover plate, and the refrigerant outlet pipe is welded with the end cover.
The invention has the further improvement that a first bolt hole is formed in the cover plate, a second bolt hole is formed in the end cover, a third bolt hole is formed in the tube plate, the cover plate is connected with the end cover and the end cover are connected with the tube plate through bolts, and sealing gaskets are arranged between the cover plate and the end cover and between the end cover and the tube plate for sealing; the tube plate is connected with the cylinder through a bolt, and a sealing gasket is arranged between the tube plate and the cylinder.
The invention has the further improvement that a plurality of arched baffle plates are arranged in a staggered way, holes are arranged on the arched baffle plates, the heat exchange tubes are U-shaped tubes, and the U-shaped tubes penetrate through the holes on the arched baffle plates.
The invention has the further improvement that the top of the cylinder body is provided with a water side outlet pipe, and the bottom of the cylinder body is provided with a water side inlet pipe; a bracket is arranged below the cylinder body.
Compared with the prior art, the invention has the following beneficial effects:
the distribution structure is designed at the refrigerant working medium inlet, and the distribution structure accurately controls the flow of the refrigerant working medium in each heat exchange tube through multi-stage distribution so as to achieve the aim of uniform distribution. Refrigerant working medium takes place the striking mixing with the wall in distribution structure many times, strengthens the degree of consistency, has the runner at striking chamber rear end design, supplies refrigerant working medium fully to flow in inside, has avoided leading to the heat transfer condition difference between each heat exchange tube when refrigerant working medium flow distribution is inhomogeneous, and when not carrying out abundant heat transfer in some heat exchange tubes, the phenomenon of burning dry has appeared in another part heat exchange tube. The heat exchanger structure provided by the invention omits a large end cover in the existing heat exchanger structure, and saves the material cost. The shell-and-tube heat exchanger provided by the invention has the advantages that the overall size is close to that of the existing product, the matching degree with the system is high, and the replacement is convenient. By reasonable design and use of the inlet distribution structure and the arched baffle plate, the usage amount of the heat exchange tube is reduced by more than 30%.
Furthermore, a through hole is designed at the rear end of the impact cavity and serves as a flow channel for the refrigerant working medium to flow inside, so that the problem of insufficient heat exchange is avoided.
Furthermore, a part of the volume of the end cover is hollowed to serve as a refrigerant working medium converging cavity, and compared with the design of the existing heat exchanger, a large amount of materials are saved. The first two-stage distribution is realized through the distribution pipe, and the material and the space required by the multi-stage distribution channel are further saved. The end cover and the tail end of the distribution structure are integrated, so that the overall sealing performance is enhanced, and the leakage of the refrigerant working medium is prevented.
Furthermore, the first two-stage distribution of the distribution structure adopts a first-stage distribution pipe and a second-stage distribution pipe, the first-stage distribution pipe and the second-stage distribution pipe are simply welded by copper pipes with general sizes, the welding length is small, the processing is convenient, the material consumption is saved, and the distribution uniformity is ensured by reasonably optimizing the size; and the subsequent distribution at each stage adopts a mode of processing a channel on the distribution pipe by processing methods such as laser cutting, linear cutting and the like, so that high-difficulty welding operation in a large amount of small spaces is avoided. The distributor used by the invention has simple structure and low manufacturing cost, and is convenient for large-scale popularization and use.
Furthermore, the distribution structure provided by the invention is connected with the tube plate and the cylinder body through bolts, and sealing is realized through a sealing gasket, so that the potential leakage risk caused by a large amount of welding is avoided, and meanwhile, the leakage risk and the corrosion risk caused by welding spots existing in the water in the existing heat exchanger structure are avoided. The structure is simple, the disassembly is easy, and the maintenance is convenient.
Drawings
Fig. 1 is a schematic cross-sectional view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the distribution structure of the present invention.
Fig. 3 is a schematic structural diagram of a refrigerant distribution pipe according to the present invention.
Fig. 4 is a schematic structural view of a three-stage distribution channel and a four-stage distribution channel of the present invention, wherein (a) is a triangle and (b) is a quadrangle.
Fig. 5 is a cross-sectional view of a dispensing structure of the present invention.
In the figure: the heat exchanger comprises a refrigerant distribution pipe 1, a refrigerant outlet pipe 2, a cover plate 3, an end cover 4, a tube plate 5, an arched baffle plate 6, a heat exchange pipe 7, a water side outlet pipe 8, a water side inlet pipe 9, a support 10, a barrel 11, a first-level distribution pipe 1-1, a first-level transverse pipe 1-2, a second-level distribution pipe 1-3, a second-level transverse pipe 1-4, a third-level distribution pipe 1-5, a first bolt hole 3-1, a hole 3-2, a second bolt hole 4-1, an outlet 4-2, a third-level distribution channel 4-3, a straight-through hole 4-4, a converging cavity 4-5, a fourth-level distribution channel 4-6, a tube hole 5-1 and a third bolt hole 5-2.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The invention takes a four-system heat exchanger as an example for explanation, and the upper part and the lower part of two sides of the heat exchanger of the four-system structure are respectively provided with two sets of independent refrigerant working medium inlets and outlets, so that the water side is shared for heat exchange. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting.
Referring to fig. 1 to 5, a shell-and-tube heat exchanger with a refrigerant distribution device includes a refrigerant distribution tube 1, a refrigerant outlet tube 2, a cover plate 3, an end cover 4, a tube plate 5, an arcuate baffle plate 6, a heat exchange tube 7, a water side outlet tube 8, a water side inlet tube 9, a support 10, and a cylinder 11. Wherein, the number of the arched baffle plates 6 is several; a tube plate 5 is arranged at one end of the cylinder body 11, a distribution structure is arranged at a refrigerant inlet and consists of a refrigerant distribution tube 1, a cover plate 3 and an end cover 4, multi-stage distribution is adopted, the distribution tube is adopted in the front two stages, a distribution channel is processed on the end cover plate in the subsequent stages, and a straight tube section is arranged after each stage of distribution for flow mixing. The mixing is realized by the impact of the refrigerant working medium with the distribution pipe and the distribution channel, and the mixing is carried out by the flow of the straight pipe section.
To ensure sealing, the end cap 4 is semicircular in shape and has the same dimensions as the cover plate 3. An outlet converging cavity 4-5 is arranged on the side wall of the upper half part of the end cover 4, a distribution channel is processed on the side wall of the lower half part, and the distribution channel is used as the last stage of a distribution structure and is connected with a heat exchange tube 7. Namely, the outlet of the heat exchange tube 7 is connected with the converging cavity 4-5, and the working medium enters the refrigerant outlet pipe 2 after passing through the converging cavity 4-5.
Referring to fig. 2 and 3, in the shell-and-tube heat exchanger with the refrigerant distribution device, the number of the refrigerant distribution pipes 1 is two, each refrigerant distribution pipe is composed of two-stage distribution structures with the same structure, specifically, the refrigerant distribution pipes 1 comprise primary distribution pipes 1-1, primary transverse pipes 1-2, secondary distribution pipes 1-3, secondary transverse pipes 1-4 and tertiary distribution pipes 1-5, the primary distribution pipes 1-1 are vertically arranged and communicated with the primary transverse pipes 1-2, and the secondary transverse pipes 1-4 are arranged in parallel with the primary transverse pipes.
The primary transverse pipes 1-2 are arranged in parallel with the secondary transverse pipes 1-4, the secondary distribution pipes 1-3 are arranged in parallel with the tertiary distribution pipes 1-5, and the primary transverse pipes 1-2 are perpendicular to the secondary distribution pipes 1-3. The first-stage distribution pipe 1-1 and the second-stage distribution pipe 1-3 are arranged vertically, or arranged in parallel, or adjusted to any angle according to actual needs. One first-stage distribution pipe 1-1, 2 second-stage distribution pipes 1-3 and three or four third-stage distribution pipes 1-5.
Three-stage distribution pipes 1 to 5 are exemplified in the present invention. When the three-stage distribution pipes 1-5 are provided, the diameter relation of the three-stage distribution pipes 1-5 is adjusted according to requirements, so that the aim of uniformly distributing the working medium in the heat exchange pipe is fulfilled. When the number of the three-level distributing pipes 1-5 is four, every two three-level distributing pipes 1-5 correspond to one two-level distributing pipe 1-3 through one two-level transverse pipe 1-4, and the diameters of the three-level distributing pipes 1-5 are the same. The primary transverse pipe 1-2 is communicated with the secondary distribution pipe 1-3, the secondary distribution pipe 1-3 is communicated with the secondary transverse pipe 1-4, the secondary transverse pipe 1-4 is communicated with the tertiary distribution pipe 1-5, and referring to fig. 3, a refrigerant working medium is impacted with the primary transverse pipe 1-2 through the primary distribution pipe 1-1, then distributed to enter the secondary distribution pipe 1-3, and then collided with the secondary transverse pipe 1-4 and enters the tertiary distribution pipe 1-5. Referring to fig. 4, the cover plate 3 is provided with holes 3-2, the holes 3-2 correspond to the tertiary distribution pipes 1-5 of the refrigerant distribution pipe 1 one by one, and the distribution pipe 1 is welded with the cover plate 3.
Referring to fig. 4 (a) and (b) and fig. 5, a side wall of the tube plate 5 is provided with a third-stage distribution channel 4-3, and the center of the third-stage distribution channel 4-3 corresponds to the hole 3-2 on the cover plate 3. The tertiary distribution channel is cruciform and can also be provided with one or more branches according to the requirement. Each tail end of each tertiary distribution channel 4-3 is provided with a straight-through hole 4-4. The through holes 4-4 are arranged in the thickness direction of the tube sheet 5. The other side of the tube plate 5 corresponding to each straight-through hole 4-4 is provided with a quadrilateral or triangular four-stage distribution channel 4-6, the center of the quadrilateral or triangular four-stage distribution channel 4-6 is communicated with the straight-through hole 4-4, and the tail ends of three or four branches of the four-stage distribution channel 4-6 are respectively positioned at the three top ends of the quadrilateral or triangular taking the straight-through hole 4-4 as the center. The ends of the four-stage distribution channels 4-6 correspond to the pipe holes 5-1 on the pipe plate 5. The heat exchange tube 7 is a U-shaped tube. The heat exchange tube 7 is connected to the other side of the tube plate 5 through the expansion joint, and the refrigerant enters the heat exchange tube 7 after being distributed. The heat exchange tubes 7 sequentially pass through the corresponding openings of the arched baffle plates 6 and are integrally arranged in the cylinder body 11.
The end cover 4 is provided with a converging cavity 4-5, and the converging cavity 4-5 is communicated with the refrigerant outlet pipe 2.
An outlet of the heat exchange tube 7 corresponds to the converging cavity 4-5 on the end cover 4, referring to fig. 4, refrigerant working media are converged in the converging cavity 4-5 and then enter the refrigerant outlet pipe 2 through the outlet 4-2, and the refrigerant outlet pipe 2 is welded with the end cover 4.
The cover plate 3 is provided with a first bolt hole 3-1, the end cover 4 is provided with a second bolt hole 4-1, the tube plate 5 is provided with a third bolt hole 5-2 for a bolt to pass through for pressing connection, and sealing gaskets are arranged between the cover plate 3 and the end cover 4 and between the end cover 4 and the tube plate 5 for sealing. The tube plate 5 is connected with the cylinder 11 through bolts, and a sealing gasket is arranged between the tube plate and the cylinder for sealing.
A plurality of arch-shaped baffle plates 6 are arranged in the cylinder body 11, and the arch-shaped baffle plates 6 are arranged in a staggered mode to strengthen shell side heat exchange. The arched baffle plate 6 is provided with a hole, and the U-shaped pipe penetrates through the hole on the arched baffle plate 6. The upper part of the cylinder 11 is provided with a water side outlet pipe 8, and the lower part of the cylinder 11 is provided with a water side inlet pipe 9. And a support 10 is arranged below the cylinder 11 to support the whole heat exchanger.
In the invention, the distribution channels and the distribution pipes are processed on two sides of the end cover to form a distribution structure together, and the uniformity of the flow of the refrigerant in each heat exchange pipe is enhanced through step-by-step distribution. The combined use of the distribution pipe and the distribution channel saves materials and space, and improves the distribution effect through reasonable design size. The heat exchange tube is welded with the cover plate, the end cover, the tube plate and the barrel are connected through the bolts, the processing is simple, the sealing performance is good, and the corrosion and leakage risks caused by underwater welding spots are avoided.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the above teachings. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A shell-and-tube heat exchanger with a refrigerant distribution device is characterized by comprising a refrigerant outlet pipe (2), a distribution structure, a pipe plate (5), an arched baffle plate (6) and a cylinder (11);
a tube plate (5) is arranged at one end of a cylinder body (11), a heat exchange tube (7) and a plurality of bow-shaped baffle plates (6) are arranged in the cylinder body (11), a distribution structure is arranged at a refrigerant inlet at one end of the cylinder body (11), the distribution structure comprises a refrigerant distribution tube (1), a cover plate (3) and an end cover (4), the refrigerant distribution tube (1) is connected with the cover plate (3), the cover plate (3) is connected with the end cover (4), and the end cover (4) is connected with the tube plate (5); the outlet of the heat exchange tube (7) is connected with the refrigerant outlet pipe (2);
the refrigerant distribution pipe (1) comprises a primary distribution pipe (1-1), a primary transverse pipe (1-2), a secondary distribution pipe (1-3), a secondary transverse pipe (1-4) and a tertiary distribution pipe (1-5), wherein the primary distribution pipe (1-1) is communicated with the primary transverse pipe (1-2), the primary transverse pipe (1-2) is communicated with the secondary distribution pipe (1-3), the secondary distribution pipe (1-3) is communicated with the secondary transverse pipe (1-4), and the secondary transverse pipe (1-4) is communicated with the tertiary distribution pipe (1-5); the primary transverse pipes (1-2) and the secondary transverse pipes (1-4) are arranged in parallel, the secondary distribution pipes (1-3) and the tertiary distribution pipes (1-5) are arranged in parallel, and the primary transverse pipes (1-2) and the secondary distribution pipes (1-3) are arranged vertically;
the cover plate (3) is provided with holes (3-2) corresponding to the three-stage distribution pipes (1-5); a plurality of pipe holes (5-1) are formed in the side wall of the pipe plate (5), and the pipe holes (5-1) are communicated with the heat exchange pipe (7);
the upper part of the side wall of the end cover (4) is provided with a converging cavity (4-5), and the converging cavity (4-5) is communicated with the refrigerant outlet pipe (2); the lower part of the cover plate is provided with a plurality of cross-shaped three-stage distribution channels (4-3), and the centers of the three-stage distribution channels (4-3) correspond to the holes (3-2) on the cover plate (3); the tail end of each third-level distribution channel (4-3) is provided with a straight-through hole (4-4), the straight-through holes (4-4) are arranged along the thickness direction of the tube plate (5), the other side wall of the end cover (4) is provided with four-level distribution channels (4-6) at positions corresponding to the straight-through holes (4-4), the centers of the four-level distribution channels (4-6) are communicated with the straight-through holes (4-4), the tail ends of the four-level distribution channels (4-6) are positioned at four vertexes of a quadrangle or three vertexes of a triangle with the straight-through holes (4-4) as centers, the tail ends of the four-level distribution channels (4-6) correspond to tube holes (5-1) in the tube plate (5), the tube holes (5-1) are communicated with the inlet of a heat exchange tube (7), and the outlet of the heat exchange tube (7) is communicated with the converging cavity (4-5).
2. A shell and tube heat exchanger with coolant distribution device according to claim 1, characterized in that the heat exchange tubes (7) are connected to the side wall of the tube sheet (5) by expansion joints.
3. A shell and tube heat exchanger with coolant distribution device as claimed in claim 1, characterized in that the end cap (4) is semicircular in shape and the same size as the cover plate (3).
4. A shell and tube heat exchanger with coolant distribution device according to claim 1, characterized in that there are two coolant distribution tubes (1), each consisting of two-stage distribution structures with the same structure.
5. A shell and tube heat exchanger with coolant distribution device according to claim 1, characterized in that the distribution pipe (1) is welded to the cover plate (3) and the coolant outlet pipe (2) is welded to the end cap (4).
6. A shell and tube heat exchanger with a refrigerant distribution device according to claim 1, wherein a cover plate (3) is provided with a first bolt hole (3-1), an end cover (4) is provided with a second bolt hole (4-1), a tube plate (5) is provided with a third bolt hole (5-2), the cover plate (3) and the end cover (4) as well as the end cover (4) and the tube plate (5) are connected by bolts, and sealing gaskets are arranged between the cover plate (3) and the end cover (4) and between the end cover (4) and the tube plate (5) for sealing; the tube plate (5) is connected with the cylinder body (11) through bolts, and a sealing gasket is arranged between the tube plate (5) and the cylinder body (11).
7. A shell-and-tube heat exchanger with refrigerant distribution device as in claim 1, wherein a plurality of segmental baffles (6) are arranged in a staggered manner, the segmental baffles (6) are provided with holes, the heat exchange tubes (7) are U-shaped tubes, and the U-shaped tubes pass through the holes of the segmental baffles (6).
8. A shell and tube heat exchanger with coolant distribution device as claimed in claim 1, characterized in that the top of the cylinder (11) is provided with a water side outlet pipe (8), and the bottom is provided with a water side inlet pipe (9); a bracket (10) is arranged below the cylinder body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111144836.5A CN113758056B (en) | 2021-09-28 | 2021-09-28 | Shell-and-tube heat exchanger with refrigerant distribution device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111144836.5A CN113758056B (en) | 2021-09-28 | 2021-09-28 | Shell-and-tube heat exchanger with refrigerant distribution device |
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| Publication Number | Publication Date |
|---|---|
| CN113758056A CN113758056A (en) | 2021-12-07 |
| CN113758056B true CN113758056B (en) | 2022-12-09 |
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| CN114517993B (en) * | 2022-02-09 | 2024-02-20 | 青岛海尔空调电子有限公司 | Horizontal shell-and-tube heat exchanger and heat exchange unit |
| CN115420131B (en) * | 2022-09-21 | 2024-04-19 | 西安电子科技大学 | Center differential heat exchanger and heat exchange performance detection device thereof |
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| EP2090851A1 (en) * | 2008-02-15 | 2009-08-19 | Delphi Technologies, Inc. | Heat exchanger with a mixing chamber |
| CN106766407B (en) * | 2016-11-21 | 2018-08-07 | 重庆美的通用制冷设备有限公司 | Distributor, evaporator and handpiece Water Chilling Units |
| CN112923608B (en) * | 2021-01-16 | 2021-12-28 | 西安交通大学 | Refrigerant flow straightener for shell and tube heat exchanger |
| CN112923609B (en) * | 2021-01-16 | 2022-04-22 | 西安交通大学 | Shell-and-tube dry evaporator |
| CN112923610A (en) * | 2021-01-16 | 2021-06-08 | 西安交通大学 | Refrigerant distributor with fractal structure |
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Effective date of registration: 20230724 Address after: No. 8, Hanzhuang Road, Huangqiao Industrial Park, Taixing City, Taizhou City, Jiangsu Province, 225411 Patentee after: JIANGSU SHILINBO'ER REFRIGERATION EQUIPMENT CO.,LTD. Address before: 710049 No. 28 West Xianning Road, Shaanxi, Xi'an Patentee before: XI'AN JIAOTONG University |
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Denomination of invention: A shell and tube heat exchanger with refrigerant distribution device Granted publication date: 20221209 Pledgee: Industrial Bank Co.,Ltd. Taizhou Branch Pledgor: JIANGSU SHILINBO'ER REFRIGERATION EQUIPMENT CO.,LTD. Registration number: Y2024980032880 |