CN218583860U

CN218583860U - Small-flow multi-tube pass heat exchanger

Info

Publication number: CN218583860U
Application number: CN202223006066.0U
Authority: CN
Inventors: 钱彬; 费晓燕; 王强
Original assignee: Wuxi Qianwei Chemical Equipment Co ltd
Current assignee: Wuxi Qianwei Chemical Equipment Co ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-03-07
Anticipated expiration: 2032-11-11

Abstract

The utility model relates to a small flow multi-tube side heat exchanger, the small flow multi-tube side heat exchanger includes the casing and connects in the pipe case of casing near-end, set up first tube side mechanism and shell side mechanism in the casing, set up second tube side mechanism in the pipe case; the first tube pass mechanism is used for flowing a first medium, and a first heat transfer tube of the first tube pass mechanism is positioned in the shell; the second tube pass mechanism is used for flowing a second medium, and a second heat transfer tube of the second tube pass mechanism is positioned in the shell; the shell side mechanism comprises a third inlet pipe arranged at the near end of the side face of the shell and a third outlet pipe arranged at the far end of the side face of the shell, and is used for circulating a third medium into the shell, so that the third medium exchanges heat with the first heat transfer pipe and the second heat transfer pipe respectively, the shell side mechanism is simple in structure, welding requirements are reduced, the possibility of leakage of the heat exchanger is reduced, and the sealing effect of the heat exchanger is improved.

Description

Small-flow multi-tube pass heat exchanger

Technical Field

The utility model relates to a heat exchanger technical field especially relates to little flow multitube pass heat exchanger.

Background

In the multi-tube cavity tube plate heat exchanger in the prior art, a tube box is divided into a plurality of cavities by a plurality of layered partition plates, please refer to fig. 3, three partition plates are adopted to divide four tube passes into four cavities, because the number of rib plates is increased, the number of points to be welded is also increased, the flatness between a sealing surface and the rib plates is easily influenced by welding, the flatness of flange sealing and the layered partition plates cannot be adjusted by simple mechanical polishing, a lathe is required for processing, and the processing cost of equipment is increased. And because a certain distance is reserved between the cavities according to the standard design requirement, the volume of the equipment cylinder body is increased, the size of the equipment flange is increased, and the overall cost of the equipment is greatly improved.

SUMMERY OF THE UTILITY MODEL

To address the above-discussed shortcomings of the prior art, it is an object of the present invention to provide a low-flow, multi-pass heat exchanger to address one or more of the problems of the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the small-flow multi-tube-pass heat exchanger comprises a shell and a tube box connected to the near end of the shell, wherein a first tube-pass mechanism and a shell-pass mechanism are arranged in the shell, and a second tube-pass mechanism is arranged in the tube box;

the first tube pass mechanism is used for flowing a first medium, and a first heat transfer tube of the first tube pass mechanism is arranged in the shell;

the second tube pass mechanism is used for flowing a second medium, and a second heat transfer tube of the second tube pass mechanism is arranged in the shell;

the shell side mechanism comprises a third inlet pipe arranged at the near end of the side surface of the shell and a third outlet pipe arranged at the far end of the side surface of the shell, and is used for circulating a third medium into the shell so that the third medium exchanges heat with the first heat transfer pipe and the second heat transfer pipe respectively.

Furthermore, the first tube pass mechanism comprises a first inlet tube and a first outlet tube which penetrate through the shell, and a plurality of first heat transfer tubes are arranged between the first inlet tube and the first outlet tube.

Furthermore, the second tube pass mechanism comprises a second inlet tube and a second outlet tube which are respectively arranged on two sides of the tube box, a partition plate is arranged in the tube box and used for partitioning a second medium in the tube box, a plurality of second heat transfer tubes are arranged at the far end of the tube box, and two ends of each second heat transfer tube are respectively communicated with the second inlet tube and the second outlet tube.

Furthermore, a tube plate is arranged at the far end of the tube box, and two ends of the second heat transfer tube are respectively fixed on the tube plate.

Further, the tube plate is connected with the shell and the tube box through fixing pieces.

Furthermore, a baffle plate is arranged around the second heat transfer pipe and connected with the shell.

Further, the second heat transfer pipe is U-shaped.

Furthermore, both sides of the near end of the tube box are respectively provided with an air exhaust port and a liquid exhaust port.

Further, a base is arranged at the near end of the tube box.

Furthermore, fins are arranged on the first heat transfer pipe and the second heat transfer pipe.

Compared with the prior art, the utility model discloses a beneficial technological effect as follows:

(one) the utility model discloses a little flow multitube side heat exchanger simple structure puts into the shell side with the tube side of little flow medium from the pipe case, only needs to set up a baffle, has reduced the welding demand, has reduced the possibility that the heat exchanger was revealed, has improved the sealed effect of heat exchanger.

And (II) further, the tube side of the low-flow medium is placed into the shell side from the tube box, so that the volume of the heat exchanger is not limited by standards and is reduced, and the cost is saved.

Drawings

Fig. 1 shows a schematic structural diagram of a small-flow multi-tube-pass heat exchanger provided in an embodiment of the present invention.

Fig. 2 shows a schematic structural diagram of a part of a small-flow multi-tube-pass heat exchanger according to an embodiment of the present invention.

Fig. 3 shows a schematic structure diagram of a four-tube-pass heat exchanger in the prior art.

In the drawings, the reference numbers:

1. a housing; 2. a pipe box; 21. an exhaust port; 22. a liquid discharge port; 3. a base; 4. a first tube pass mechanism; 41. a first inlet pipe; 42. a first outlet pipe; 43. a first heat transfer pipe; 5. a second tube pass mechanism; 51. a second inlet pipe; 52. a second outlet pipe; 53. a partition plate; 54. a tube sheet; 55. a second heat transfer pipe; 6. a shell side mechanism; 61. a third inlet pipe; 62. and a third outlet pipe.

Detailed Description

To make the objects, features and advantages of the present invention more comprehensible, please refer to the accompanying drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limitation of the implementation of the present invention, so that the present invention does not have the essential significance in the technology, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention.

In the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like are defined to indicate an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the present invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

To describe the structure of the small flow multi-tube heat exchanger more clearly, the present invention defines the terms "distal end" and "proximal end", specifically, the "distal end" refers to the end away from the ground, the "proximal end" refers to the end close to the ground, and fig. 1 is taken as an example, the lower end of the housing 1 in fig. 1 is the proximal end, and the upper end of the housing 1 in fig. 1 is the distal end.

Example one

Referring to fig. 1, the small-flow multi-tube-pass heat exchanger includes a housing 1 and a tube box 2 connected to a proximal end of the housing 1, wherein a first tube-pass mechanism 4 and a shell-pass mechanism 6 are disposed in the housing 1, and a second tube-pass mechanism 5 is disposed in the tube box 2;

the first tube-side mechanism 4 is used for flowing a first medium, and a first heat transfer tube 43 of the first tube-side mechanism 4 is arranged in the shell 1;

the second tube side mechanism 5 is used for flowing a second medium, and a second heat transfer tube 55 of the second tube side mechanism 5 is arranged in the shell 1;

the shell-side mechanism 6 includes a third inlet pipe 61 disposed at a proximal end of a side surface of the casing 1 and a third outlet pipe 62 disposed at a distal end of the side surface of the casing 1, and the shell-side mechanism 6 is configured to circulate a third medium into the casing 1 so that the third medium exchanges heat with the first heat transfer pipe 43 and the second heat transfer pipe 55, respectively.

The specific structures of the first tube pass mechanism 4, the second tube pass mechanism 5, and the tube box 2 are described below as follows:

referring to fig. 1, further, the first tube side mechanism 4 includes a first inlet tube 41 and a first outlet tube 42 passing through the housing 1, and a plurality of first heat transfer tubes 43 are disposed in parallel between the first inlet tube 41 and the first outlet tube 42.

Referring to fig. 1, further, the second tube pass mechanism 5 includes a second inlet tube 51 and a second outlet tube 52 respectively disposed at two sides of the tube box 2, a partition plate 53 is disposed in the tube box 2, the partition plate 53 is used for partitioning a second medium in the tube box 2, a plurality of second heat transfer tubes 55 are disposed at a distal end of the tube box 2, and two ends of the second heat transfer tubes 55 are respectively communicated with the second inlet tube 51 and the second outlet tube 52. Referring to fig. 1, preferably, the second heat transfer pipe 55 is U-shaped, and both ends of the second heat transfer pipe 55 are fixed to both sides of the tube plate 54.

Referring to fig. 1, further, a tube plate 54 is disposed at a distal end of the tube box 2, and the tube plate 54 is connected to the shell 1 and the tube box 2 by a fixing member (not shown). Preferably, in the first embodiment of the present invention, in the small-flow multi-tube-pass heat exchanger, the fixing member is a bolt and a nut connected to the bolt through a thread, the bolt passes through the tube box 2 and the shell 1 and screws on the nut, so that the tube box 2 and the shell 1 clamp the fixing tube plate 54.

Further, baffles (not shown) may be disposed around the second heat transfer pipes 55 and connected to the casing 1 for baffling the third medium, so as to improve heat exchange efficiency.

Referring to fig. 1, further, an air outlet 21 and a liquid outlet 22 are respectively disposed at two sides of the proximal end of the tube box 2.

Referring to fig. 1, further, a base 3 is disposed at a proximal end of the tube box 2, so that the small-flow multi-tube-pass heat exchanger of the present invention can be conveniently placed.

Further, fins (not shown in the figure) are arranged on the first heat transfer pipe 43 and the second heat transfer pipe 55, and the shape of the fins can be square, rectangular or circular, so that the installation is convenient, and the heat exchange efficiency can be improved.

The utility model discloses a concrete work flow as follows:

the first medium flows in from the first inlet pipe 41 in the first tube-side mechanism 4 and flows out from the first outlet pipe 42 through the first heat transfer pipe 43, the second medium flows in from the second inlet pipe 51 in the second tube-side mechanism 5 and flows out from the second outlet pipe 52 through the second heat transfer pipe 55, the third medium flows in from the third inlet pipe 61 in the shell-side mechanism 6 and flows out from the third outlet pipe 62, and the third medium exchanges heat with the first heat transfer pipe 43 and the second heat transfer pipe 55, thereby completing the heat exchange.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The small-flow multi-tube pass heat exchanger is characterized in that: the small-flow multi-tube-pass heat exchanger comprises a shell and a tube box connected to the near end of the shell, wherein a first tube-pass mechanism and a shell-pass mechanism are arranged in the shell, and a second tube-pass mechanism is arranged in the tube box;

2. The small flow multiple tube pass heat exchanger of claim 1 wherein: the first tube pass mechanism comprises a first inlet tube and a first outlet tube which penetrate through the shell, and a plurality of first heat transfer tubes are arranged between the first inlet tube and the first outlet tube.

3. The small flow multi-tube pass heat exchanger of claim 1 wherein: the second tube pass mechanism comprises a second inlet tube and a second outlet tube which are respectively arranged on two sides of the tube box, a partition plate is arranged in the tube box and used for partitioning a second medium in the tube box, a plurality of second heat transfer tubes are arranged at the far end of the tube box, and two ends of each second heat transfer tube are respectively communicated with the second inlet tube and the second outlet tube.

4. A small flow multiple tube pass heat exchanger as claimed in claim 3 wherein: the far end of the tube box is provided with a tube plate, and two ends of the second heat transfer tube are respectively fixed on the tube plate.

5. The small flow multiple tube pass heat exchanger of claim 4 wherein: the tube plate is connected with the shell and the tube box through fixing pieces.

6. A small flow multiple tube pass heat exchanger as claimed in claim 3 wherein: and baffle plates are arranged around the second heat transfer pipe and connected with the shell.

7. A small flow multiple tube pass heat exchanger as claimed in claim 3 wherein: the second heat transfer pipe is U-shaped.

8. The small flow multiple tube pass heat exchanger of claim 1 wherein: and an air outlet and a liquid outlet are respectively arranged on two sides of the near end of the tube box.

9. The small flow multiple tube pass heat exchanger of claim 1 wherein: the near end of the tube box is provided with a base.

10. The small flow multiple tube pass heat exchanger of claim 1 wherein: and fins are arranged on the first heat transfer pipe and the second heat transfer pipe.