Efficient heat exchange tube with internal spiral line
By setting grooves, protrusions and inner spirals on the outer and inner walls of the base tube of the heat exchange tube, the problems of low heat transfer efficiency and easy scaling of existing light tubes are solved, and the effect of efficient heat exchange and anti-scaling is achieved is achieved. , extends the use cycle and reduces maintenance costs.
Patent Information
- Application Number
- CN202420686498.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The light pipes in existing tube heat exchangers have low heat transfer efficiency and are prone to blockage of pipelines due to scaling. Especially when the media has high viscosity or solid particles, the heat exchange pipe has a short service life, maintenance and High cleaning cost.
An efficient heat exchange tube with an inner spiral line is designed. The outer wall of the base pipe is equipped with several grooves and protrusions in the axial direction, and the inner wall is equipped with an inner spiral line in the axial direction. This structure increases the heat exchange area, changes the flow state of the medium, improves heat transfer efficiency, and prevents solid particles from deposition through the spiral flow of the inner spiral.
It improves heat exchange efficiency, extends the service cycle of heat exchange pipes, reduces the economic cost of maintenance and cleaning, and has a simple structure and low manufacturing cost.
Smart Images
Figure CN222438634U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of petroleum and chemical heat exchangers, and is a high-efficiency heat exchange tube with inner spiral wires suitable for heat exchangers. Background Art
[0002] The heat exchange tube is one of the components of the heat exchanger. It is a very important component in recovering heat in the heat transfer process and improving heat transfer efficiency.
[0003] At present, the heat exchange tubes commonly used in shell-and-tube heat exchangers are bare tubes, but bare tubes have low heat transfer efficiency and are easily blocked by scaling. Especially in the case of some media with high viscosity or containing solid particles, the service life of the heat exchange tubes is short. If the tubes are blocked, the heat exchanger needs to be disassembled and repaired regularly, and the economic cost of cleaning the tubes is very high. Utility Model Content
[0004] In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the utility model is to provide a high-efficiency heat exchange tube with high heat transfer efficiency and low fouling.
[0005] To achieve the above purpose, the utility model provides a high-efficiency heat exchange tube with inner spiral lines, including a base tube, characterized in that: the outer wall of the base tube is axially provided with a plurality of grooves and protrusions, and the inner wall of the base tube is axially provided with a plurality of inner spiral lines.
[0006] The base tube diameter of the high-efficiency tube heat exchange tube with inner spiral line is 12-48 mm, the thickness of the base tube is 2-6 mm, and the base tube material is carbon steel, low alloy steel, stainless steel, or duplex steel.
[0007] The groove depth in the axial direction of the outer wall of the base tube of the high-efficiency heat exchange tube with inner spiral line is 0.8-1 mm, and the protrusion height in the axial direction of the outer wall of the base tube is 0.8-1 mm.
[0008] The inner spiral lines on the inner wall of the base tube of the high-efficiency heat exchange tube with inner spiral lines are equally distributed along the diameter of the base tube, the inner spiral lines are in an inwardly concave trapezoidal shape along the axial direction of the inner wall of the base tube, the inward concave depth of the inner spiral lines is 0.5 mm, and the inner spiral lines are forward or reverse.
[0009] The beneficial effects of the utility model are as follows: when a heat exchange medium in a high-efficiency heat exchange tube with an inner spiral line flows on the outer wall of the base tube, the heat exchange medium contacts the axial grooves and protrusions on the outer wall of the base tube, increasing the heat exchange area and improving the heat exchange efficiency; when the heat exchange medium flows on the inner wall of the base tube, the heat exchange medium passes through the inner spiral line of the inner wall of the base tube, enabling the heat exchange medium to flow in a spiral rotation, changing the flow state of the heat exchange medium, increasing the disturbance of the heat exchange medium, changing the laminar flow into turbulent flow, and improving the heat exchange efficiency; at the same time, the heat exchange medium continuously flows in a spiral rotation through the inner spiral line of the inner wall of the base tube, making it difficult for solid particles in the tube to deposit and scale, extending the service life of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of a high-efficiency heat exchange tube structure with an inner spiral line in the utility model. Figure 1 .
[0011] Figure 2 This is a schematic diagram of a high-efficiency heat exchange tube structure with an inner spiral line in the utility model. Figure 2 .
[0012] Figure 3 This is a schematic diagram of a high-efficiency heat exchange tube structure with an inner spiral line in the utility model. Figure 3 .
[0013] Figure 4 This is an axial cross-sectional view of a high-efficiency heat exchange tube with an inner spiral line according to the utility model.
[0014] Figure 5 This is a radial cross-sectional view of a high-efficiency heat exchange tube with an inner spiral line according to the utility model.
[0015] The figure includes: 1, base tube; 10, inner spiral line; 11, groove; 12, protrusion. DETAILED DESCRIPTION
[0016] The utility model is further described below in conjunction with the accompanying drawings:
[0017] like Figure 1 , Figure 2 , Figure 3 The high-efficiency heat exchange tube with inner spiral line shown in the figure comprises a base tube 1, and a plurality of grooves 11 and protrusions 12 are axially arranged on the outer wall of the base tube, wherein the depth of the grooves 11 is 0.8-1 mm, and the height of the protrusions 12 is 0.8-1 mm; when the heat exchange medium flows on the outer wall of the base tube 1, it contacts with the axial grooves 11 and protrusions 12 on the outer wall of the base tube 1, thereby increasing the heat exchange area and improving the heat exchange efficiency.
[0018] like Figure 1 , Figure 4 , Figure 5 The invention discloses a high-efficiency heat exchange tube with inner spiral lines, wherein a plurality of inner spiral lines 10 are axially arranged on the inner wall of the base tube 1; the inner spiral lines 10 are equally distributed along the diameter of the base tube 1, and are in an inwardly concave trapezoidal shape along the axial direction of the inner wall of the base tube 1; the inwardly concave depth of the inner spiral lines 10 is 0.5 mm, and the inner spiral lines 10 are forward or reverse rotating; when the heat exchange medium flows on the inner wall of the base tube 1, it passes through the inner spiral lines 10 on the inner wall of the base tube 1, so that the heat exchange medium can flow in a spiral rotation, change the flow state of the heat exchange medium, increase the disturbance of the heat exchange medium, change the laminar flow into turbulent flow, and improve the heat exchange efficiency; at the same time, the heat exchange medium continuously flows in a spiral rotation through the inner spiral lines 10 on the inner wall of the base tube 1, so that the solid particles in the tube are not easy to deposit and scale, and the service life of the heat exchange tube is extended.
[0019] The utility model has a simple structure and low manufacturing cost. Actual industrial application shows that it has good heat transfer and anti-scaling performance in the technical field of petroleum and chemical heat exchangers, prolongs the service life of the heat exchange tube and improves the economic benefits.
[0020] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A high-efficiency heat exchange tube with an inner spiral line, comprising a base tube (1), characterized in that: The outer wall of the base tube (1) is axially provided with a plurality of grooves (11) and protrusions (12), and the inner wall of the base tube (1) is axially provided with a plurality of inner spiral lines (10).
2. The high-efficiency heat exchange tube with inner spiral wire according to claim 1, characterized in that: The base tube (1) has a diameter of 12 to 48 mm, a thickness of 2 to 6 mm, and a material of the base tube (1) is carbon steel, low alloy steel, stainless steel, or duplex steel.
3. The high-efficiency heat exchange tube with inner spiral wire according to claim 1, characterized in that: The depth of the groove (11) in the axial direction of the outer wall of the base tube (1) is 0.8 to 1 mm, and the height of the protrusion (12) in the axial direction of the outer wall of the base tube (1) is 0.8 to 1 mm.
4. The high-efficiency heat exchange tube with inner spiral wire according to claim 1, characterized in that: The inner helical lines (10) on the inner wall of the base tube (1) are equally distributed along the diameter of the base tube (1); the inner helical lines (10) are in an inwardly concave trapezoidal shape along the axial direction of the inner wall of the base tube (1); the inward concave depth of the inner helical lines (10) is 0.5 mm; and the inner helical lines (10) are either forward or reverse.