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CN-224215895-U - Heat exchanger with spiral flow guide structure

CN224215895UCN 224215895 UCN224215895 UCN 224215895UCN-224215895-U

Abstract

The utility model relates to a heat exchanger with a spiral flow guide structure, and belongs to the technical field of heat exchangers. The device comprises a shell side cylinder, a distance tube, a connecting tube, at least one group of flow guiding units, a connecting plate and a bottom plate, wherein a shell side flow channel is formed in the shell side cylinder and used for carrying out heat exchange between fluid and a tube side, the distance tube is arranged in the shell side cylinder, the connecting tube is arranged at the top of one end of the shell side cylinder and is communicated with the shell side cylinder, the at least one group of flow guiding units are formed by supporting tubes and spiral flow guiding sheets, the spiral flow guiding sheets are outwards and downwards fixed on the surfaces of the supporting tubes in an inclined mode, the flow guiding units are arranged in the connecting tube, the connecting plate is used for connecting the flow guiding units with the connecting tube, one end of the connecting plate is connected with the supporting tubes, the other end of the connecting plate is connected with the inner wall of the connecting tube, and the bottom plate is used for connecting the flow guiding units with the distance tube. The utility model solves the problem of local retention of high-viscosity fluid at the inlet due to viscous force accumulation, improves the heat transfer efficiency and improves the stability of equipment.

Inventors

  • LIU BING
  • JIA ZHIHAO
  • ZHAO WEI
  • BAO ERKAI

Assignees

  • 山东美陵博德化工机械有限公司

Dates

Publication Date
20260508
Application Date
20250421

Claims (7)

  1. 1. The utility model provides a spiral water conservancy diversion structure heat exchanger which characterized in that includes A shell-side cylinder (8) with a shell-side flow passage formed therein for heat exchange between the fluid and the tube side; a distance tube (7) arranged in the shell side cylinder (8); the connecting pipe (5) is arranged at the top of one end of the shell side cylinder (8) and is communicated with the shell side cylinder (8); At least one group of flow guiding units consisting of a supporting tube (3) and a spiral flow guiding sheet (2), wherein the spiral flow guiding sheet (2) is outwards and downwards fixed on the surface of the supporting tube (3) in an inclined manner, and the flow guiding units are arranged in the connecting tube (5); the connecting plate (4) is used for connecting the flow guiding unit with the connecting pipe (5), one end of the connecting plate (4) is connected with the supporting pipe (3), and the other end of the connecting plate is connected with the inner wall of the connecting pipe (5); and a bottom plate (6) for connecting the flow guiding unit with the distance tube (7).
  2. 2. The heat exchanger with the spiral flow guide structure according to claim 1, wherein a conical transition cylinder (1) is arranged on the inner wall of the shell side cylinder (8) corresponding to the connecting pipe (5), and the caliber of one side of the conical transition cylinder (1) close to the shell side cylinder (8) is smaller than that of one side far away from the shell side cylinder (8).
  3. 3. The heat exchanger with the spiral flow guiding structure according to claim 2, wherein the supporting pipes (3) are welded with the spiral flow guiding sheets (2), the connecting plates (4) and the bottom plate (6).
  4. 4. A spiral flow-directing structure heat exchanger according to claim 3, characterized in that the connection tube (5) is welded to the shell-side cylinder (8).
  5. 5. The heat exchanger of spiral flow guiding structure according to claim 4, characterized in that the conical transition cylinder (1) is welded to the inner wall of the shell side cylinder (8).
  6. 6. The heat exchanger of spiral flow guiding structure according to claim 5, characterized in that the connection plate (4) is welded with the connection tube (5).
  7. 7. A spiral flow-structured heat exchanger according to any one of claims 1-6, wherein the flow-guiding units are plural and arranged in series axially along the shell-side cylinder (8), the spiral flow-guiding sheets (2) of adjacent flow-guiding units being counter-rotating.

Description

Heat exchanger with spiral flow guide structure Technical Field The utility model relates to a heat exchanger with a spiral flow guide structure, and belongs to the technical field of heat exchangers. Background The shell and tube heat exchanger is a device for transferring heat between fluids with different temperatures, and is widely applied to the fields of energy, chemical industry, petroleum, refrigeration, food processing and the like. However, high viscosity fluids are prone to flow non-uniformity, boundary layer thickening, reduced heat transfer coefficients, and the like in conventional heat exchangers. These problems not only affect the heat transfer efficiency, but may also lead to localized retention, adsorption of impurities forming a fouling layer, further reducing heat transfer efficiency and affecting the stability of the device. Disclosure of utility model The utility model aims to solve the technical problems of overcoming the defects of the prior art, providing the heat exchanger with the spiral flow guide structure, solving the problem of local retention of high-viscosity fluid at an inlet due to viscous force accumulation, improving the heat transfer efficiency and improving the stability of equipment. The utility model relates to a heat exchanger with a spiral flow guiding structure, which comprises A shell side cylinder, wherein a shell side flow channel is formed in the shell side cylinder and is used for heat exchange between fluid and a tube side; A distance tube disposed within the shell side cylinder; the connecting pipe is arranged at the top of one end of the shell side cylinder and is communicated with the shell side cylinder; At least one group of flow guiding units consisting of a supporting tube and a spiral flow guiding sheet, wherein the spiral flow guiding sheet is outwards and downwards fixed on the surface of the supporting tube in an inclined manner, and the flow guiding units are arranged in the connecting tube; The connecting plate is used for connecting the flow guiding unit with the connecting pipe, one end of the connecting plate is connected with the supporting tube, the other end is connected with the inner wall of the connecting pipe; and the bottom plate is used for connecting the flow guiding unit with the distance tube. The inner wall of the shell side cylinder is provided with a conical transition cylinder corresponding to the connecting pipe, and the caliber of one side of the conical transition cylinder close to the shell side cylinder is smaller than that of one side far away from the shell side cylinder. The design of the tapered transition barrel enables a smooth transition of fluid from the nipple into the shell-side barrel. The smooth transition can reduce the impact and turbulence of the fluid when the fluid enters the shell side, reduce the kinetic energy loss of the fluid and improve the flow efficiency of the fluid. Since the caliber of the conical transition cylinder gradually increases from the side close to the shell side cylinder to the side far away from the shell side cylinder, the fluid can be more uniformly distributed when entering the shell side, and the formation of vortex is reduced. The vortex flow can cause uneven fluid flow, increase flow resistance, and reduce heat transfer efficiency. By reducing the turbulence, the tapered transition barrel can improve the flow uniformity and heat transfer efficiency of the fluid. The support pipes are all connected with the spiral guide vane, the connecting plate and the bottom plate in a welding way. Welding is a high-strength connection mode, and can ensure firm and reliable connection among the support tube, the spiral guide vane, the connecting plate and the bottom plate. The firm connection can effectively prevent the components from loosening or shifting during fluid impact or equipment operation, thereby improving the stability of the whole structure. The connecting pipe is welded with the shell side cylinder. The welded connection provides an extremely high tightness, effectively preventing leakage of fluid from the connection between the nipple and the shell-side cylinder. This is particularly important for heat exchangers for handling high pressure, high temperature or toxic and harmful fluids, and can ensure safe operation of the equipment, avoiding safety accidents or environmental pollution due to leakage. The conical transition cylinder is welded with the inner wall of the shell side cylinder. The welding connection can ensure firm and reliable connection between the conical transition cylinder and the inner wall of the shell side cylinder. The firm connection can effectively prevent the conical transition barrel from loosening or shifting in the process of fluid impact or equipment operation, thereby improving the stability of the whole structure. The connecting plate is welded with the connecting pipe. The welding connection can ensure firm and reliable connection between the c