Shell-and-tube heat exchange equipment
By using elastic connection components in shell-and-tube heat exchangers, the problem of cracking at the welded joint between the heat exchange tubes and the shell is solved, achieving thermal stability and sealing of the equipment, and improving heat exchange efficiency and maintainability.
Patent Information
- Application Number
- CN202423155203.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In the prior art, the weld between the heat exchange tube and the shell cracks due to thermal expansion and contraction, which affects the thermal stability and operational stability of the shell-and-tube heat exchanger.
The system employs an elastic connection assembly, including a first tube body convex ring, a second tube body convex ring, and an elastic ring. The elastic ring adapts to the thermal expansion and contraction of the heat exchange tube through elastic deformation, and the connecting convex ring provides stable support for the heat exchange tube, replacing the traditional rigid welding.
It achieves a stable connection between the heat exchange tubes and the shell, adapts to thermal expansion and contraction, maintains the thermal stability and sealing of the equipment, and improves heat exchange efficiency and maintainability of the equipment.
Smart Images
Figure CN223896642U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of fluid heat exchange technology, especially relates to a shell-and-tube heat exchange equipment. BACKGROUND
[0002] The shell-and-tube heat exchange equipment usually comprises a shell and a plurality of heat exchange tubes penetrating the shell, and cold fluid and hot fluid flow in the shell and the heat exchange tubes respectively to exchange heat and realize heat transfer.
[0003] In the prior art, the connection between the heat exchange tube and the shell is by welding. However, during the heating and cooling of the heat exchange tube, thermal expansion and contraction will occur, and the welding position between the heat exchange tube and the shell will crack after long-term use, affecting the thermal stability and working stability of the shell-and-tube heat exchange equipment. UTILITY MODEL CONTENT
[0004] In view of the above analysis, the utility model aims to provide a shell-and-tube heat exchange equipment to solve the problem of cracking of the welding position between the heat exchange tube and the tube plate in the prior art, affecting the thermal stability and working stability of the shell-and-tube heat exchange equipment.
[0005] The purpose of the utility model is mainly realized through the following technical solutions.
[0006] The utility model provides a shell-and-tube heat exchange equipment, comprising a shell and a plurality of heat exchange tubes penetrating the shell, and the heat exchange tubes are connected with the shell through a connecting assembly;
[0007] The connecting assembly comprises a first tube body protruding ring, a second tube body protruding ring, an elastic ring and a connecting protruding ring, the first tube body protruding ring and the second tube body protruding ring are arranged on the outer wall of the heat exchange tube and are fixedly connected with the heat exchange tube, and the connecting protruding ring is arranged on the inner wall of the shell and is fixedly connected with the shell;
[0008] The first tube body protruding ring and the second tube body protruding ring are arranged in sequence in the direction gradually away from the connecting protruding ring;
[0009] The first tube body protruding ring is partially inserted into the connecting protruding ring, there is a gap between the first tube body protruding ring and the inner wall of the shell, the elastic ring is sleeved on the outer wall of the first tube body protruding ring, the elastic ring is located between the connecting protruding ring and the second tube body protruding ring, and the connecting protruding ring and the second tube body protruding ring extrude the elastic ring.
[0010] Further, the shell-and-tube heat exchange equipment further comprises a tube plate arranged in the shell and fixedly connected with the shell, a tube hole is formed in the tube plate, and the heat exchange tube penetrates the tube hole.
[0011] Further, a fluid hole is formed in the tube plate.
[0012] Further, the shell-and-tube heat exchange equipment further comprises heat exchange fins, the heat exchange fins are sleeved on the outer wall of the heat exchange tube and are fixedly connected with the heat exchange tube.
[0013] Further, the heat exchange fin comprises a mounting ring and a single piece, the mounting ring is sleeved on the outer wall of the heat exchange pipe and is detachably fixedly connected with the heat exchange pipe, one end of the single piece is fixedly connected with the outer wall of the mounting ring, and the other end is suspended.
[0014] Further, the number of single pieces is multiple, and the multiple single pieces are uniformly arranged along the circumference of the mounting ring.
[0015] Further, the shape of the single piece is spiral.
[0016] Further, the tubular heat exchange equipment further comprises a mixing cavity, the liquid outlets of the multiple heat exchange pipes are connected with the liquid inlets of the mixing cavity, and the multiple heat exchange pipes correspond to one mixing cavity.
[0017] Further, the mixing cavity comprises an inner cavity, an outer cavity and a heat preservation layer, the heat preservation layer is wrapped on the outer wall of the outer cavity, the inner cavity is located in the outer cavity, and there is a gap between the inner cavity and the outer cavity.
[0018] Further, the inner diameter of the connecting convex ring and the outer diameter of the first pipe body convex ring are 1:0.98-1:1.
[0019] The thickness of the elastic ring is 10-20mm.
[0020] Compared with the prior art, the present application can achieve at least one of the following beneficial effects:
[0021] The tubular heat exchange equipment provided by the present application changes the rigid welding between the heat exchange pipe and the shell into elastic connection, on the one hand, the connecting convex ring and the second pipe body convex ring extrude the elastic ring, and the elastic deformation of the elastic ring adapts to the thermal expansion and contraction of the heat exchange pipe, and at the same time, the sealing ring can also realize the sealing of the heat exchange pipe and the shell; on the other hand, the first pipe body convex ring is inserted into the connecting convex ring, and the first pipe body is supported by the connecting convex ring, so that stable support of the pipe body can be realized.
[0022] In the present application, the above technical solutions can be combined with each other to realize more preferred combination solutions. Other features and advantages of the present application will be described in the subsequent specification, and some advantages can become apparent from the specification or can be understood by implementing the present application. The purpose and other advantages of the present application can be realized and obtained through the contents specifically pointed out in the specification examples and the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0023] The drawings are only used for the purpose of illustrating specific embodiments and are not considered as limiting the present application, and in the whole drawings, the same reference signs represent the same parts.
[0024] Fig. 1The structure schematic diagram of the shell-and-tube heat exchange equipment provided by the embodiment one of the utility model;
[0025] Fig. 2 The structure schematic diagram of the vacuum tank in the shell-and-tube heat exchange equipment provided by the embodiment one of the utility model.
[0026] Reference signs:
[0027] 1 - shell body;2 - heat exchange pipe;3 - first pipe body convex ring;4 - second pipe body convex ring;5 - elastic ring;6 - connecting convex ring;7 - tube plate;8 - heat exchange fin;9 - mixing cavity;901 - inner cavity;902 - outer cavity;903 - heat preservation layer. Specific implementation
[0028] The preferred embodiments of the utility model are described in detail below in combination with the drawings, wherein the drawings constitute a part of the utility model, and are used together with the embodiments of the utility model to explain the principles of the utility model, and are not used to limit the scope of the utility model.
[0029] Embodiment one
[0030] The embodiment provides a kind of shell-and-tube heat exchange equipment, referring to Figs. 1-2 , including shell body 1 and the multiple heat exchange pipes 2 of passing through shell body 1, heat exchange pipe 2 is connected with shell body 1 by connecting assembly, connecting assembly includes first pipe body convex ring 3, second pipe body convex ring 4, elastic ring 5 and connecting convex ring 6, first pipe body convex ring 3, second pipe body convex ring 4 are located in the outer wall of heat exchange pipe 2 and are fixedly connected with heat exchange pipe 2, connecting convex ring 6 is located in the inner wall of shell body 1 and is fixedly connected with shell body 1, along the direction gradually away from connecting convex ring 6, first pipe body convex ring 3 and second pipe body convex ring 4 are sequentially arranged, first pipe body convex ring 3 is partially inserted into connecting convex ring 6, there is gap between first pipe body convex ring 3 and the inner wall of shell body 1, elastic ring 5 is sleeved on the outer wall of first pipe body convex ring 3, and elastic ring 5 is located between connecting convex ring 6 and second pipe body convex ring 4, connecting convex ring 6 and second pipe body convex ring 4 extrude elastic ring 5.
[0031] Compared with prior art, the shell-and-tube heat exchange equipment provided in the embodiment changes rigid welding between heat exchange pipe 2 and shell body 1 into elastic connection, on the one hand, connecting convex ring 6 and second pipe body convex ring 4 extrude elastic ring 5, and the elastic deformation of elastic ring 5 can adapt to thermal expansion and contraction of heat exchange pipe 2, and at the same time, the sealing ring can also realize the sealing of heat exchange pipe 2 and shell body 1;On the other hand, first pipe body convex ring 3 is inserted into connecting convex ring 6, and the first pipe body is supported by connecting convex ring 6, so that stable support of pipe body can be realized.
[0032] The inner diameter of connecting convex ring 6 and the outer diameter of first pipe body convex ring 3 are 1:0.98-1:1, preferably, the inner diameter of connecting convex ring 6 and the outer diameter of first pipe body convex ring 3 are 1:1.
[0033] Similarly, in order to ensure the sealing of the heat exchange pipe 2 and the shell 1, while providing sufficient elastic deformation, the thickness of the elastic ring 5 is 10-20 mm, preferably, the thickness of the elastic ring 5 is 16 mm.
[0034] In order to further improve the installation stability of the heat exchange pipe 2, the above-mentioned tube-shell heat exchange equipment further comprises a tube plate 7 provided in the shell 1 and fixedly connected with the shell 1, the tube plate 7 is provided with a tube hole, the heat exchange pipe 2 penetrates the tube hole, and the hole wall of the tube hole realizes the stable support of the heat exchange pipe 2.
[0035] It can be understood that, in order to realize the flow of fluid in the shell 1, the above-mentioned tube plate 7 is provided with a fluid hole, the inner cavity 901 of the shell 1 is communicated as a whole through the fluid hole, and the smooth flow of fluid in the shell 1 is ensured.
[0036] In order to improve the heat exchange efficiency, the above-mentioned tube-shell heat exchange equipment further comprises a heat exchange fin 8, which is sleeved on the outer wall of the heat exchange pipe 2 and fixedly connected with the heat exchange pipe 2. In this way, by providing the heat exchange fin 8, the contact area between the heat exchange pipe 2 and the fluid in the shell 1 can be effectively increased, thereby effectively improving the heat exchange efficiency of the tube-shell heat exchange equipment.
[0037] For the structure of the heat exchange fin 8, it comprises a mounting ring and a single piece, the mounting ring is sleeved on the outer wall of the heat exchange pipe 2 and detachably fixedly connected with the heat exchange pipe 2, one end of the single piece is fixedly connected with the outer wall of the mounting ring, and the other end is suspended. The heat exchange fin 8 with this structure can be replaced when one group of heat exchange fins 8 is damaged, without the need to replace the whole heat exchange pipe 2.
[0038] Exemplarily, the number of single pieces is multiple, for example, 4-8, and the multiple single pieces are uniformly arranged along the circumference of the mounting ring.
[0039] In order to improve the uniformity of heat exchange, the shape of the single piece is spiral, so that under the guidance of the single piece, the fluid flowing through the single piece can produce a certain rotational flow, thereby realizing the uniform heat exchange between the fluid in the shell 1 and the fluid in the heat exchange pipe 2; in addition, due to the large area of the spiral single piece, the heat exchange area is increased, thereby improving the heat exchange efficiency of the above-mentioned tube-shell heat exchange equipment.
[0040] Considering that the fluid temperature in multiple heat exchange pipes 2 may be different, in order to improve the uniformity of subsequent heat supply, the above-mentioned tube-shell heat exchange equipment further comprises a mixing cavity 9, the outlet of the multiple heat exchange pipes 2 is connected with the inlet of the mixing cavity 9, and one mixing cavity 9 corresponds to multiple heat exchange pipes 2, so that the fluid flowing out of the multiple heat exchange pipes 2 can be mixed in the mixing cavity 9, and the fluid with uniform temperature is supplied into the subsequent equipment.
[0041] It is worth noting that the fluid flowing out of the heat exchange pipe 2 has generally reached a temperature threshold, which can cause the temperature of the fluid to decrease during the mixing process in the mixing chamber 9. In order to improve the heat preservation performance of the mixing chamber 9, the mixing chamber 9 is exemplarily structured to include an inner chamber 901, an outer chamber 902, and a heat preservation layer 903. The heat preservation layer 903 is wrapped on the outer wall of the outer chamber 902. The inner chamber 901 is located in the outer chamber 902, and there is a gap between the inner chamber 901 and the outer chamber 902 for air heat preservation. In this way, the mixing chamber 9 with such a structure can effectively isolate the mixing chamber 9 from the external environment by combining the heat preservation of the heat preservation layer 903 and the air heat preservation, thereby effectively improving the heat preservation performance of the mixing chamber 9 and reducing the heat loss of the fluid during the mixing process in the mixing chamber 9.
[0042] The above merely provides the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which shall be covered within the protection scope of the present application.
Claims
1. A shell-and-tube heat exchanger, characterized in that, It includes a shell and multiple heat exchange tubes penetrating the shell, the heat exchange tubes being connected to the shell via a connecting assembly; The connecting assembly includes a first tube body protrusion ring, a second tube body protrusion ring, an elastic ring, and a connecting protrusion ring. The first tube body protrusion ring and the second tube body protrusion ring are disposed on the outer wall of the heat exchange tube and are fixedly connected to the heat exchange tube. The connecting protrusion ring is disposed on the inner wall of the shell and is fixedly connected to the shell. The first tube body protrusion and the second tube body protrusion are arranged sequentially along a direction that gradually moves away from the connecting protrusion. The first tube body protrusion is inserted into the connecting protrusion. There is a gap between the first tube body protrusion and the inner wall of the housing. The elastic ring is sleeved on the outer wall of the first tube body protrusion and is located between the connecting protrusion and the second tube body protrusion. The connecting protrusion and the second tube body protrusion compress the elastic ring.
2. The shell-and-tube heat exchanger according to claim 1, characterized in that, The shell-and-tube heat exchanger also includes a tube sheet disposed inside the shell and fixedly connected to the shell, with tube holes provided on the tube sheet, and the heat exchange tubes passing through the tube holes.
3. The shell-and-tube heat exchanger according to claim 2, characterized in that, Fluid holes are provided on the tube sheet.
4. The shell-and-tube heat exchanger according to claim 1, characterized in that, The shell-and-tube heat exchanger also includes heat exchange fins, which are sleeved on the outer wall of the heat exchange tube and fixedly connected to the heat exchange tube.
5. The shell-and-tube heat exchanger according to claim 4, characterized in that, The heat exchange fins include an mounting ring and a single piece. The mounting ring is sleeved on the outer wall of the heat exchange tube and is detachably and fixedly connected to the heat exchange tube. One end of the single piece is fixedly connected to the outer wall of the mounting ring, and the other end is suspended.
6. The shell-and-tube heat exchanger according to claim 5, characterized in that, The number of individual pieces is multiple, and the multiple individual pieces are evenly arranged along the circumference of the mounting ring.
7. The shell-and-tube heat exchanger according to claim 5, characterized in that, The shape of the single piece is spiral.
8. The shell-and-tube heat exchanger according to any one of claims 1 to 7, characterized in that, The shell-and-tube heat exchanger also includes a mixing chamber, with the outlets of multiple heat exchange tubes connected to the inlet of the mixing chamber, and multiple heat exchange tubes corresponding to one mixing chamber.
9. The shell-and-tube heat exchanger according to claim 8, characterized in that, The mixing chamber includes an inner cavity, an outer cavity, and an insulation layer. The insulation layer is wrapped around the outer wall of the outer cavity, the inner cavity is located in the outer cavity, and there is a gap between the inner cavity and the outer cavity.
10. The shell-and-tube heat exchanger according to any one of claims 1 to 7, characterized in that, The ratio of the inner diameter of the connecting convex ring to the outer diameter of the first tube convex ring is 1:0.98 to 1:
1. The thickness of the elastic ring is 10-20 mm.