A three-way connected double pipe heat exchanger

Abstract

The utility model provides a kind of sleeve heat exchanger of tee connection belongs to heat exchanger technical field, including heat exchange subassembly and connecting component;Heat exchange subassembly includes outer tube;The utility model: both ends of outer tube are equipped with tee pass pipe, first fluorine road pipe and second fluorine road pipe are connected in the top of tee pass pipe of corresponding end respectively, tee pass pipe both ends are welded sealing with outer tube and heat exchange inner tube by novel composite connector, novel composite connector is dissimilar composite connector, dissimilar composite connector is composed of steel shell and metal titanium inner layer, steel shell is compounded in the outside of metal titanium inner layer, present improvement becomes novel composite connector, its structure is that steel material is wrapped with titanium material, the contact area of its composite increases, effectively reduces joint leakage.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a three-way connected shell-and-tube heat exchanger. Background Technology

[0002] A heat exchanger is an energy-saving device that enables heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters to meet process requirements. It is also a key component for improving energy efficiency. The heat exchanger industry encompasses various sectors including HVAC, pressure vessels, wastewater treatment equipment, chemicals, and petroleum. Its traditional structure typically consists of inner and outer tubes. Two heat exchange media at different temperatures flow in the tube side and shell side of the inner and outer tubes, respectively, exchanging heat through the tube walls. Older composite joints, relying on end-face bonding, have a small contact area between the two materials. When used in shell-and-tube heat exchangers, leaks are prone to occur during welding and high-pressure testing. Utility Model Content

[0003] The purpose of this invention is to provide a three-way connected shell-and-tube heat exchanger to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a three-way connected shell-and-tube heat exchanger, including a heat exchange component and a connecting component; Wherein: the heat exchange component includes an outer tube, an inner heat exchange tube is inserted inside the outer tube, a heat exchange cavity is formed between the outer tube and the inner heat exchange tube, one end of the outer tube is connected to a first refrigerant line pipe, the other end of the outer tube is connected to a second refrigerant line pipe, and the first refrigerant line pipe and the second refrigerant line pipe are each connected to one end of the corresponding heat exchange cavity. The connecting assembly includes three-way transfer tubes fixedly connected to both ends of the outer tube. The first fluorine line and the second fluorine line are respectively connected to the top of the corresponding three-way transfer tubes. Both ends of the three-way transfer tubes are welded and sealed to the surface of the outer tube and the heat exchange inner tube through a new type of composite connector.

[0005] As a preferred embodiment of this utility model: the novel composite connector is a heterogeneous composite connector, which is composed of a steel shell and a titanium inner layer, with the steel shell composited on the outside of the titanium inner layer.

[0006] As a preferred embodiment of this utility model, flow channel through holes are provided at both ends of the heat exchange inner tube.

[0007] As a preferred embodiment of this utility model: heat exchange medium through holes are opened on the surface of both the first fluorine pipe and the second fluorine pipe.

[0008] As a preferred embodiment of this utility model, the outer tube and the heat exchange inner tube are designed in a spiral coiled shape.

[0009] As a preferred embodiment of this utility model, both ends of the heat exchange inner tube extend to the outside of the outer tube.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) A heat exchange inner tube is inserted inside the outer tube, and a heat exchange cavity is formed between the outer tube and the heat exchange inner tube. One end of the outer tube is connected to a first fluorine pipe, and the other end is connected to a second fluorine pipe. Both the first and second fluorine pipes have heat exchange medium through holes on their surfaces. When heat exchange is required, the heat exchange medium flows through the heat exchange cavity through the heat exchange medium through hole on the surface of one of the fluorine pipes and flows out through the heat exchange medium through hole on the surface of the other fluorine pipe, thereby achieving circulation flow and heat exchange with the flowing medium in the heat exchange inner tube. (2) Both ends of the outer tube are equipped with three-way cross tubes. The first and second fluorine lines are respectively connected to the top of the three-way cross tubes at the corresponding ends. The two ends of the three-way cross tubes are welded and sealed to the outer tube and the heat exchange inner tube through a new type of composite connector. The new type of composite connector is a dissimilar composite joint. The dissimilar composite joint is composed of a steel shell and a titanium inner layer. The steel shell is composite on the outside of the titanium inner layer. Now it has been improved into a new type of composite joint. Its structure is that the steel material wraps the titanium material. The contact area of ​​the composite is increased, which effectively reduces the leakage of the joint. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a schematic cross-sectional view of the present invention. Figure 4 This is a top view of the structure of this utility model; Figure 5 This is a schematic diagram of the structural composition of the novel composite connector in this utility model.

[0012] In the diagram: 1. Heat exchange assembly; 101. Outer tube; 102. Inner heat exchange tube; 103. Heat exchange chamber; 104. First fluorine circuit pipe; 105. Second fluorine circuit pipe; 2. Connecting assembly; 21. Three-way cross tube; 22. New type of composite connector; 221. Dissimilar composite joint; 222. Steel shell; 223. Inner titanium layer; 3. Flow channel through hole; 4. Heat exchange medium through hole. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Please see Figures 1-5 A three-way connected shell-and-tube heat exchanger includes: a heat exchange assembly 1 and a connecting assembly 2; Please see Figure 1 , Figure 2 , Figure 3 The heat exchange assembly 1 includes an outer tube 101, an inner heat exchange tube 102 inserted inside the outer tube 101, and a heat exchange cavity 103 formed between the outer tube 101 and the inner heat exchange tube 102. One end of the outer tube 101 is connected to a first refrigerant pipe 104, and the other end of the outer tube 101 is connected to a second refrigerant pipe 105. The first refrigerant pipe 104 and the second refrigerant pipe 105 are each connected to one end of the corresponding heat exchange cavity 103. Heat exchange medium through holes 4 are opened on the surface of the first refrigerant pipe 104 and the second refrigerant pipe 105.

[0015] In practical use: A heat exchange inner tube 102 is inserted inside the outer tube 101, forming a heat exchange cavity 103 between the outer tube 101 and the heat exchange inner tube 102. One end of the outer tube 101 is connected to a first fluorine pipe 104, and the other end is connected to a second fluorine pipe 105. Both the first fluorine pipe 104 and the second fluorine pipe 105 have heat exchange medium through holes 4 on their surfaces. When heat exchange is required, the heat exchange medium flows through the heat exchange cavity 103 through the heat exchange medium through hole 4 on the surface of one of the fluorine pipes and flows out through the heat exchange medium through hole 4 on the surface of the other fluorine pipe, thus achieving circulation flow and exchanging heat with the medium flowing in the heat exchange inner tube 102.

[0016] Please see Figure 3 , Figure 5 The connecting component 2 includes a three-way tube 21 fixedly connected to both ends of the outer tube 101. The first fluorine line tube 104 and the second fluorine line tube 105 are respectively connected to the top of the corresponding three-way tube 21. Both ends of the three-way tube 21 are welded and sealed to the surface of the outer tube 101 and the heat exchange inner tube 102 through a new type of composite connector 22. The new type of composite connector 22 is a dissimilar composite joint 221, which is composed of a steel shell 222 and a titanium inner layer 223. The steel shell 222 is composited on the outside of the titanium inner layer 223.

[0017] In practical use: both ends of the outer tube 101 are equipped with three-way cross tubes 21. The first fluorine line tube 104 and the second fluorine line tube 105 are respectively connected to the top of the three-way cross tubes 21 at the corresponding ends. The two ends of the three-way cross tubes 21 are welded and sealed to the outer tube 101 and the heat exchange inner tube 102 through a new type of composite connector 22. The new type of composite connector 22 is a dissimilar composite joint 221, which is composed of a steel shell 222 and a metallic titanium inner layer 223. The steel shell 222 is composite on the outside of the metallic titanium inner layer 223. Now it has been improved into a new type of composite joint, whose structure is steel material wrapped around titanium material. Its composite contact area is increased, effectively reducing joint leakage.

[0018] Please see Figure 1 , Figure 2 Both ends of the heat exchange inner tube 102 are provided with flow channel through holes 3.

[0019] In practical use: both ends of the heat exchange inner tube 102 are provided with flow channel holes 3 to facilitate the flow of the heat exchange medium.

[0020] Please see Figure 2 , Figure 3 The outer tube 101 and the heat exchange inner tube 102 are designed in a spiral coiled shape.

[0021] In practical use: the outer tube 101 and the heat exchange inner tube 102 are spirally coiled. The spiral channel increases the flow path length of the fluid, which prolongs the heat exchange time between the fluid and the tube wall and makes the heat transfer more complete.

[0022] Please see Figure 1 Both ends of the heat exchange inner tube 102 extend to the outside of the outer tube 101.

[0023] In practical use: the two ends of the heat exchange inner tube 102 extend to the outside of the outer tube 101. After the two ends of the heat exchange inner tube 102 extend to the outside of the outer tube 101, the flow channel through hole 3 of the heat exchange inner tube 102 is completely separated from the heat exchange cavity 103, thus completely eliminating the risk of mixing of the two media due to sealing failure or structural design defects.

[0024] Both ends of the outer tube 101 are equipped with three-way cross tubes 21. The first fluorine line 104 and the second fluorine line 105 are respectively connected to the top of the three-way cross tubes 21 at the corresponding ends. The two ends of the three-way cross tubes 21 are welded and sealed to the outer tube 101 and the heat exchange inner tube 102 through a new type of composite connector 22. The new type of composite connector 22 is a dissimilar composite joint 221, which is composed of a steel shell 222 and a metallic titanium inner layer 223. The steel shell 222 is composite on the outside of the metallic titanium inner layer 223. Now it has been improved into a new type of composite joint, whose structure is steel material wrapped with titanium material. Its composite contact area is increased, effectively reducing joint leakage.

[0025] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A three-way connected shell-and-tube heat exchanger, characterized in that, include: A heat exchange assembly (1) includes an outer tube (101) and an inner heat exchange tube (102) inserted inside the outer tube (101). A heat exchange cavity (103) is formed between the outer tube (101) and the inner heat exchange tube (102). One end of the outer tube (101) is connected to a first refrigerant line (104), and the other end of the outer tube (101) is connected to a second refrigerant line (105). The first refrigerant line (104) and the second refrigerant line (105) are each connected to one end of the corresponding heat exchange cavity (103). The connecting assembly (2) includes a three-way tube (21) fixedly connected to both ends of the outer tube (101). The first fluorine line tube (104) and the second fluorine line tube (105) are respectively connected to the top of the corresponding three-way tube (21). Both ends of the three-way tube (21) are welded and sealed to the surface of the outer tube (101) and the heat exchange inner tube (102) through a new type of composite connector (22).

2. The shell-and-tube heat exchanger according to claim 1, characterized in that: The novel composite connector (22) is a heterogeneous composite connector (221), which is composed of a steel shell (222) and a titanium inner layer (223), with the steel shell (222) composited on the outside of the titanium inner layer (223).

3. The shell-and-tube heat exchanger according to claim 1, characterized in that: Both ends of the heat exchange inner tube (102) are provided with flow channel through holes (3).

4. The shell-and-tube heat exchanger according to claim 1, characterized in that: The first fluorine pipe (104) and the second fluorine pipe (105) are both provided with heat exchange medium through holes (4).

5. The shell-and-tube heat exchanger according to claim 1, characterized in that: The outer tube (101) and the heat exchange inner tube (102) are designed in a spiral coiled shape.

6. The shell-and-tube heat exchanger according to claim 1, characterized in that: Both ends of the heat exchange inner tube (102) extend to the outside of the outer tube (101).

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