CN216385188U - Shell and tube heat exchanger - Google Patents
Shell and tube heat exchanger Download PDFInfo
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- CN216385188U CN216385188U CN202122838177.7U CN202122838177U CN216385188U CN 216385188 U CN216385188 U CN 216385188U CN 202122838177 U CN202122838177 U CN 202122838177U CN 216385188 U CN216385188 U CN 216385188U
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Abstract
The utility model provides a shell-and-tube heat exchanger, which belongs to the technical field of aero-engines.A plurality of tube holes are arranged on the surface of an inner end plate, and are assembled with an outer-layer radiating tube and sealed and fixed; the plate surface of the outer end plate is provided with a plurality of pipe holes which are assembled with the inner-layer radiating pipe and are sealed and fixed; the outer end plate and the end socket form a first cavity structure, one end of the first cavity structure is provided with a first fluid inlet, the other end of the first cavity structure is provided with a first fluid outlet, and the first cavity structure and the inner pipe cavity of the inner-layer radiating pipe form a first fluid channel; the side of the inner side end plate of the second end of the shell is provided with an inlet of a second fluid, the side of the inner side end plate of the first end is provided with an outlet of the second fluid, one side of the plate surface of the outer side end plate, which is close to the shell, and the inner side end plate form a second cavity structure, and the pipeline of the outer radiating pipe forms a channel of the second fluid. The utility model has high structure compactness, high heat transfer intensity and large unit heat transfer area, and is used for fluid heat exchange treatment of a heat management system.
Description
Technical Field
The utility model relates to the technical field of aircraft engines, in particular to a shell-and-tube heat exchanger.
Background
With the rapid development of the aviation field, the development of a heat exchanger for efficient heat exchange, the enhancement of a heat transfer technology, the improvement of heat transfer capacity and the reduction of the volume and weight of the heat exchanger have important significance for the aviation development. The shell-and-tube heat exchanger has the advantages of easy manufacture, low production cost, wide material selection range, convenient cleaning, strong adaptability, large treatment capacity, reliable work, high temperature and high pressure adaptability and the like, thereby becoming the most widely applied heat exchanger.
In the related technology, the shell-and-tube heat exchanger has the advantages of low structural compactness, low heat transfer strength and unit heat transfer area, and high production cost, and limits the use of the shell-and-tube heat exchanger in various thermodynamic systems. Therefore, the research on the shell-and-tube heat exchanger with high-efficiency heat exchange has important significance for the development of industry.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems in the related art, the utility model provides a shell-and-tube heat exchanger, which comprises the following technical scheme:
there is provided a shell and tube heat exchanger comprising: a sealing head, an outer end plate, a plurality of outer-layer radiating pipes, an inner end plate, a plurality of inner-layer radiating pipes and a shell,
the shell is of a columnar structure, an inner side end plate is arranged at two ends of the shell, an outer side end plate is arranged at one end, far away from the shell, of the inner side end plate, and a seal head is arranged at one end, far away from the inner side end plate, of the outer side end plate;
the plate surface of the inner side end plate is vertical to the tube length of the outer-layer radiating tube, the plate surface of the inner side end plate is provided with a plurality of tube holes for penetrating through the outer-layer radiating tube, and the inner side end plate and the outer-layer radiating tubes are assembled together and sealed and fixed;
the plate surface of the outer side end plate is vertical to the tube length of the inner-layer radiating tube, the plate surface of the outer side end plate is provided with a plurality of tube holes for penetrating through the inner-layer radiating tube, and the outer side end plate and the inner-layer radiating tubes are assembled together and sealed and fixed;
the outer end plates and the end sockets at two ends of the shell form a first cavity structure, the first cavity structure at the first end of the shell is provided with a first fluid inlet, the first cavity structure at the second end is provided with a first fluid outlet, and the first cavity structure and the pipelines of the inner-layer radiating pipes form a first fluid channel;
the side surface of the inner side end plate at the second end of the shell is provided with a second fluid inlet, the side surface of the inner side end plate at the first end is provided with a second fluid outlet, one side of the plate surface of the outer side end plate close to the shell and the inner side end plate form a second cavity structure, and each inner-layer radiating pipe is assembled in each outer-layer radiating pipe; the second cavity structure and the gaps of the pipelines of the outer-layer radiating pipe and the inner-layer radiating pipe form a channel of a second fluid.
Wherein, the side of the shell is provided with an inlet and an outlet of a third fluid, and the inner side of the shell and the outer side of the outer layer radiating pipe form a channel of the third fluid.
Wherein the inlet and outlet for the first fluid are circular;
the inlet and outlet of the second fluid are circular.
Wherein the inlet and outlet for the third fluid are circular.
Wherein, the assembly positions of the outer end plate (2) and the inner radiating pipe (6) adopt brazing welding or metal expansion sleeve expansion joint sealing.
Wherein, the outer layer radiating pipe (3) and the inner layer radiating pipe (6) are light pipes, or the outer sides are provided with pressing pits or fins.
Wherein, shell-and-tube heat exchanger still includes: a nozzle for a fluid to be injected,
the inlet and outlet for fluid are provided with fluid nozzles.
According to the double-end-plate nested double-layer radiating pipe shell-and-tube heat exchanger structure provided by the utility model, cold fluid enters the first fluid channel from the inlet of the first cavity structure, flows through the inner pipe cavity of the inner radiating pipe and flows out from the outlet of the first cavity structure, hot fluid enters the second fluid channel from the second fluid inlet of the second cavity, flows through the pipe gaps of the outer radiating pipe and the inner radiating pipe, and flows out from the second fluid outlet of the second cavity. The fluid of cold and hot both sides carries out forced convection heat transfer through inlayer cooling tube pipe wall, and the fluid of both sides realizes countercurrent flow completely, can improve heat transfer coefficient greatly. And the heat exchange of three fluids can be realized, the cold fluid enters the third cavity from the third fluid inlet on the shell and flows out from the third fluid outlet through the outer side of the outer heat dissipation pipe, the hot fluid, the cold fluid and the cold fluid are subjected to forced convection heat exchange, the two sides of the hot fluid and the cold fluid are subjected to countercurrent heat exchange, and one path of the hot fluid is cooled by the two paths of the cold fluid, so that the heat exchange coefficient is greatly improved.
Drawings
FIG. 1 is a schematic structural view of a double-end plate nested double-tube shell-and-tube heat exchanger according to the present invention;
fig. 2 is a schematic view illustrating the relationship between the inner layer of heat dissipating pipe and the outer layer of heat dissipating pipe shown in fig. 1.
Fig. 3 is a schematic structural design diagram of heat exchange of three fluids.
Wherein, 1-head, 2-outside end plate, 3-outer layer radiating pipe, 4-inside end plate, 5-shell, 6-inner layer radiating pipe.
Detailed Description
The utility model is further illustrated with reference to the following figures and examples:
the shell-and-tube capillary heat exchanger is a common heat management accessory in the field of aviation, and has the main advantages of easy manufacture, low production cost, wide material selection range, convenient cleaning, strong adaptability, large treatment capacity, reliable work and capability of adapting to high temperature and high pressure. In addition, the structure form is changeable, and the appearance adaptability is strong. The main disadvantages are that the compactness, the heat transfer strength and the metal consumption per unit heat transfer area are not comparable to those of the plate-fin heat exchanger.
According to the utility model, a double-end-plate nested double-layer radiating pipe shell-and-tube heat exchanger structure is realized, the fluid on the inner side of the tube and the fluid on the outer side of the tube of the conventional shell-and-tube radiator exchange heat only on two sides, and the heat transfer intensity is lower; the heat exchanger provided by the utility model can realize three-side heat exchange of fluid, wherein one fluid flows in the first layer of pipe, and the other fluid flows outside the pipe and in the second layer of pipe, so that the heat transfer strength of the shell-and-tube heat exchanger can be effectively improved.
As shown in fig. 1, the present invention provides a shell-and-tube heat exchanger including: a sealing head 1, an outer end plate 2, a plurality of outer layer radiating pipes 3, an inner end plate 4, a plurality of inner layer radiating pipes 6 and a shell body 5,
the shell 5 is of a columnar structure, the two ends of the shell 5 are provided with an inner side end plate 4, one end, far away from the shell 5, of the inner side end plate 4 is provided with an outer side end plate 2, and one end, far away from the inner side end plate 4, of the outer side end plate 2 is provided with a seal head 1;
the plate surface of the inner side end plate 4 is vertical to the tube length of the outer-layer radiating tube 3, the plate surface of the inner side end plate 4 is provided with a plurality of tube holes for penetrating through the outer-layer radiating tube 3, and the inner side end plate 4 and the outer-layer radiating tubes 3 are assembled together and sealed and fixed;
the plate surface of the outer end plate 2 is vertical to the tube length of the inner-layer radiating tube 6, the plate surface of the outer end plate 2 is provided with a plurality of tube holes for penetrating through the inner-layer radiating tube 6, and the outer end plate 2 and the inner-layer radiating tubes 6 are assembled together and sealed and fixed;
the outer end plates 2 and the end sockets 1 at two ends of the shell 5 form a first cavity structure, the first cavity structure at the first end of the shell 5 is provided with a first fluid inlet, the first cavity structure at the second end is provided with a first fluid outlet, and the first cavity structure and the pipelines of the inner-layer radiating pipe 6 form a first fluid channel;
the side surface of the inner side end plate 4 at the second end of the shell 5 is provided with a second fluid inlet, the side surface of the inner side end plate 4 at the first end is provided with a second fluid outlet, one side of the plate surface of the outer side end plate 2 close to the shell 5 and the inner side end plate 4 form a second cavity structure, and each inner-layer radiating pipe 6 is assembled inside each outer-layer radiating pipe 3; the second cavity structure forms a passage of the second fluid with the pipe gaps of the outer layer radiating pipe 3 and the inner layer radiating pipe 6.
Further, the shell-and-tube heat exchanger may further include: the fluid nozzles are arranged at the inlet and the outlet of the fluid, so that the connection with the pipeline of the fluid system is realized.
The housing 5 is welded to the inner end plate 4.
The inner end plate 4 is welded to the outer end plate 2.
And the outer end plate 2 is welded with the end socket 1.
The inner side end plate 4 and the plurality of outer radiating pipes 3 are assembled together and brazed.
The outer header 2 and the plurality of inner radiating pipes 6 are assembled together and brazed.
Referring to fig. 1, the working process of the present invention for exchanging heat between two fluids includes: the cold fluid enters the first fluid channel from the inlet of the first cavity structure, flows through the pipe cavity of the inner radiating pipe and flows out from the outlet of the first cavity structure, and the hot fluid enters the second fluid channel from the second fluid inlet of the second cavity, flows through the pipe gaps of the outer radiating pipe and the inner radiating pipe and flows out from the second fluid outlet of the second cavity. The fluid of cold and hot both sides carries out forced convection heat transfer through inlayer cooling tube pipe wall, and the fluid of both sides realizes countercurrent flow completely, can improve heat transfer coefficient greatly.
When three fluids are required for heat exchange, as shown in fig. 3, the present invention also provides another shell-and-tube heat exchanger, comprising: a sealing head 1, an outer end plate 2, a plurality of outer layer radiating pipes 3, an inner end plate 4, a plurality of inner layer radiating pipes 6 and a shell body 5,
the shell 5 is of a columnar structure, the two ends of the shell 5 are provided with an inner side end plate 4, one end, far away from the shell 5, of the inner side end plate 4 is provided with an outer side end plate 2, and one end, far away from the inner side end plate 4, of the outer side end plate 2 is provided with a seal head 1;
the plate surface of the inner side end plate 4 is vertical to the tube length of the outer-layer radiating tube 3, the plate surface of the inner side end plate 4 is provided with a plurality of tube holes for penetrating through the outer-layer radiating tube 3, and the inner side end plate 4 and the outer-layer radiating tubes 3 are assembled together and sealed and fixed;
the plate surface of the outer end plate 2 is vertical to the tube length of the inner-layer radiating tube 6, the plate surface of the outer end plate 2 is provided with a plurality of tube holes for penetrating through the inner-layer radiating tube 6, and the outer end plate 2 and the inner-layer radiating tubes 6 are assembled together and sealed and fixed;
the outer end plates 2 and the end sockets 1 at two ends of the shell 5 form a first cavity structure, the first cavity structure at the first end of the shell 5 is provided with a first fluid inlet, the first cavity structure at the second end is provided with a first fluid outlet, and the first cavity structure and the pipelines of the inner-layer radiating pipe 6 form a first fluid channel;
the side surface of the inner side end plate 4 at the second end of the shell 5 is provided with a second fluid inlet, the side surface of the inner side end plate 4 at the first end is provided with a second fluid outlet, one side of the plate surface of the outer side end plate 2 close to the shell 5 and the inner side end plate 4 form a second cavity structure, and each inner-layer radiating pipe 6 is assembled inside each outer-layer radiating pipe 3; the second cavity structure forms a passage of the second fluid with the pipe gaps of the outer layer radiating pipe 3 and the inner layer radiating pipe 6.
The side of the housing 5 is provided with an inlet and an outlet for the third fluid, and the inner side of the housing 5 and the outer side of the outer pipe of the outer radiating pipe 3 form a passage for the third fluid.
Further, the shell-and-tube heat exchanger may further include: the fluid nozzles are arranged at the inlet and the outlet of the fluid, so that the connection with the pipeline of the fluid system is realized.
The housing 5 is welded to the inner end plate 4.
The inner end plate 4 is welded to the outer end plate 2.
And the outer end plate 2 is welded with the end socket 1.
The inner side end plate 4 and the plurality of outer radiating pipes 3 are assembled together and brazed.
Wherein the inlet and outlet for the first fluid are circular;
the inlet and outlet of the second fluid are circular.
Wherein the inlet and outlet for the third fluid are circular.
Wherein, the outside end plate 2 and the 6 mounted positions of inlayer cooling tube adopt the expanded joint of metal cover sealed, reduce the influence of brazing process to the tubular material intensity of cooling tube.
Wherein, the outer layer radiating pipe 3 and the inner layer radiating pipe 6 can be light pipes, or the outer side is provided with pressed pits or fins. Through setting up indent or fin, increase fluid vortex effect, play the intensive heat transfer effect.
Referring to fig. 3, the working process of the heat exchange between three fluids provided by the present invention includes: the cold fluid 1 enters the first fluid channel from the inlet of the first cavity structure, flows through the pipe cavity of the inner radiating pipe and flows out from the outlet of the first cavity structure, and the hot fluid enters the second fluid channel from the second fluid inlet of the second cavity, flows through the pipe gaps of the outer radiating pipe and the inner radiating pipe and flows out from the second fluid outlet of the second cavity. The cold fluid 2 enters the third cavity from the third fluid inlet on the shell and flows out from the third fluid outlet through the outer side of the outer heat dissipation pipe, the hot fluid performs forced convection heat transfer with the cold fluid 1 and the cold fluid 2, both sides of the hot fluid are both countercurrent heat transfer, two paths of cold fluids cool one path of hot fluid, the heat transfer coefficient is greatly improved, and the simultaneous heat transfer of three types of fluids is realized.
The foregoing examples are given for the purpose of illustration only and are not to be construed as limiting the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description.
Claims (7)
1. A shell and tube heat exchanger, comprising: a sealing head (1), an outer end plate (2), a plurality of outer-layer radiating pipes (3), an inner end plate (4), a plurality of inner-layer radiating pipes (6) and a shell body (5),
the shell (5) is of a columnar structure, two ends of the shell (5) are provided with an inner side end plate (4), one end, far away from the shell (5), of the inner side end plate (4) is provided with an outer side end plate (2), and one end, far away from the inner side end plate (4), of the outer side end plate (2) is provided with an end socket (1);
the plate surface of the inner side end plate (4) is vertical to the tube length of the outer layer radiating tube (3), the plate surface of the inner side end plate (4) is provided with a plurality of tube holes for penetrating through the outer layer radiating tube (3), and the inner side end plate (4) and the outer layer radiating tubes (3) are assembled together and sealed and fixed;
the plate surface of the outer side end plate (2) is vertical to the length of the inner-layer radiating pipe (6), the plate surface of the outer side end plate (2) is provided with a plurality of pipe holes for penetrating through the inner-layer radiating pipe (6), and the outer side end plate (2) and the inner-layer radiating pipes (6) are assembled together and sealed and fixed;
the outer end plates (2) at two ends of the shell (5) and the seal heads (1) form a first cavity structure, the first cavity structure at the first end of the shell (5) is provided with a first fluid inlet, the first cavity structure at the second end is provided with a first fluid outlet, and the first cavity structure and the pipelines of the inner-layer radiating pipes (6) form a first fluid channel;
the side surface of the inner side end plate (4) at the second end of the shell (5) is provided with a second fluid inlet, the side surface of the inner side end plate (4) at the first end is provided with a second fluid outlet, one side of the plate surface of the outer side end plate (2) close to the shell (5) and the inner side end plate (4) form a second cavity structure, and each inner-layer radiating pipe (6) is assembled inside each outer-layer radiating pipe (3); the second cavity structure and the pipe gaps of the outer layer radiating pipe (3) and the inner layer radiating pipe (6) form a channel of a second fluid.
2. A shell and tube heat exchanger according to claim 1,
the side surface of the shell (5) is provided with an inlet and an outlet of a third fluid, and the inner side of the shell (5) and the outer side of the outer layer radiating pipe (3) form a passage of the third fluid.
3. A shell and tube heat exchanger according to claim 1,
the inlet and outlet of the first fluid are circular;
the inlet and outlet of the second fluid are circular.
4. A shell and tube heat exchanger according to claim 2,
the inlet and outlet for the third fluid are circular.
5. A shell and tube heat exchanger according to claim 2,
the assembly positions of the outer side end plate (2) and the inner layer radiating pipe (6) are sealed by brazing welding or metal expansion sleeve expansion.
6. A shell and tube heat exchanger according to claim 1,
the outer layer radiating pipe (3) and the inner layer radiating pipe (6) are light pipes, or the outer sides of the light pipes are provided with pressing pits or fins.
7. A shell and tube heat exchanger according to claim 1, characterized in that the shell and tube heat exchanger further comprises: a nozzle for a fluid to be injected,
the inlet and outlet for fluid are provided with fluid nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122838177.7U CN216385188U (en) | 2021-11-18 | 2021-11-18 | Shell and tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122838177.7U CN216385188U (en) | 2021-11-18 | 2021-11-18 | Shell and tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216385188U true CN216385188U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122838177.7U Active CN216385188U (en) | 2021-11-18 | 2021-11-18 | Shell and tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216385188U (en) |
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2021
- 2021-11-18 CN CN202122838177.7U patent/CN216385188U/en active Active
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