Tubular heat exchanger

Abstract

The shell and tube heat exchanger comprises an outer tube, a heat exchange inner tube is fixed in the outer tube, a heat exchange guide tube is fixed in the heat exchange inner tube, the right end of the heat exchange guide tube penetrates through the outer tube and is fixedly connected with the outer tube, a fixed tube is fixed to the outer side wall of the outer tube, and the fixed tube is fixedly connected with the heat exchange guide tube. Two inner cylinders are fixed to the inner side wall of the heat exchange inner pipe. Heat exchange liquid enters the heat exchange inner pipe, heat-exchanged liquid enters the heat exchange guide pipe, heat exchange is completed, the size is small, large space is not needed to be occupied, the valve rod is rotated, the valve rod drives the three-way ball valve to rotate, the heat exchange inner pipe, the heat exchange guide pipe and the fixing pipe are sealed, through holes of the three-way ball cores correspond to the fixing cylinder and the connecting cylinder respectively, and therefore heat exchange is achieved. And the incrustation cleaning liquid is injected into the heat exchange inner pipe, the heat exchange guide pipe and the fixed pipe, so that incrustation in the heat exchange inner pipe, the heat exchange guide pipe, the outer pipe, the fixed pipe and the like can be cleaned, and the incrustation can be conveniently cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation bus ducts, in particular to a shell-and-tube heat exchanger. Background Art

[0002] Tubular heat exchanger, also known as shell and tube heat exchanger, is a partition-type heat exchange equipment.

[0003] Existing shell-and-tube heat exchangers are all large in size and can exchange a large amount of heat, but they have limitations. The large size means that they occupy a large area, which is not conducive to installation in a small space. They are overused for heat exchange of small flow liquids, resulting in energy waste. Therefore, there is a need for a small shell-and-tube heat exchanger that reduces the footprint, exchanges heat for small flow liquids, and is easy to clean inside. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a shell-and-tube heat exchanger, which solves the problems raised by the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a shell-and-tube heat exchanger, comprising an outer tube, a heat exchange inner tube fixed inside the outer tube, a heat exchange conduit fixed inside the heat exchange inner tube, the right end of the heat exchange conduit passing through the outer tube and fixedly connected to the outer tube, a fixed tube fixed to the outer side wall of the outer tube, two inner tubes fixed to the inner side wall of the heat exchange inner tube, the outer sides of the fixed tube and the heat exchange conduit are both provided with protrusions, and the interiors of the inner tubes and the protrusions are both rotatably connected to three-way ball cores; The outer wall of the protrusion is fixed with a connecting cylinder, the outer wall of the outer tube is fixed with a sewage cylinder, and the outer walls of the heat exchange inner tube are respectively fixed with two fixed cylinders. The interior of the protrusion and the interior of the heat exchange inner tube are respectively rotatably connected with one and two valve stems. The bottom end of the valve stem is fixedly connected to the outer wall of the three-way ball core. The interior of the sewage cylinder, the interior of the fixed cylinder and the interior of the connecting cylinder are all screwed with sealing blocks. The tops of the front and rear valve stems are fixed with rotating plates, and the tops of the left and right valve stems are fixed with rotating blocks.

[0006] Preferably, a sealing ring is provided on the outer side of the sealing block.

[0007] Preferably, a movable frame is provided above the outer tube, and the outer side wall of the movable frame is slidably connected to two support blocks, the bottom of the support block is fixedly connected to the outer side wall of the outer tube, and a cam is fixed to the outer side wall of the valve stem on the right side, and circular holes are respectively opened at both ends of the movable frame, and a connecting rod is slidably connected to the inside of the circular hole, and a connecting block is fixed to the other end of the connecting rod, and a round rod is rotatably connected to the inside of the connecting block, and the bottom end of the round rod is fixedly connected to the top of the rotating plate.

[0008] Preferably, a circular plate is fixed to the outer side wall of the valve stem on the left side, and a fixing rod is fixed to the outer side wall of the circular plate and the outer side wall of the cam. The internal rotation of the fixing rod is connected to two rotating rods, and a transmission rod is provided above the fixing rod. The top end of the rotating rod passes through the transmission rod, and the rotating rod and the transmission rod are rotationally connected.

[0009] Preferably, a tension spring is provided on the outer side wall of the movable frame.

[0010] Preferably, a through slot is provided on the right side of the movable frame. Beneficial effects

[0011] The present invention provides a shell-and-tube heat exchanger. Compared with the prior art, it has the following advantages: 1. The shell-and-tube heat exchanger is provided with an outer tube, an inner heat exchange tube, a heat exchange conduit, a three-way ball core, a fixed tube, a sewage tube and a connecting tube. The heat exchange liquid enters the inner heat exchange tube and the heat exchanged liquid enters the heat exchange conduit, thus completing the heat exchange. The shell-and-tube heat exchanger is small in size and does not need to occupy a large space. The valve stem is rotated, and the valve stem rotates with the three-way ball valve, so that the inner heat exchange tube, the heat exchange conduit and the fixed tube are sealed. The through holes of the multiple three-way ball cores correspond to the fixed tube and the connecting tube respectively. The scale cleaning liquid is injected into the inner heat exchange tube, the heat exchange conduit and the fixed tube, so that the scale inside the inner heat exchange tube, the heat exchange conduit, the outer tube and the fixed tube can be cleaned. This can facilitate the cleaning of the scale and can also limit the cleaning liquid from entering the pipes connected to the inner heat exchange tube, the heat exchange conduit and the fixed tube.

[0012] 2. The shell-and-tube heat exchanger is provided with a movable frame, a cam, a connecting block, a connecting rod, a round rod, a transmission rod, a rotating rod, a round plate and a fixed rod. By rotating the right rotating block, the valve stem and the three-way ball core on the right side can be rotated. The right valve stem rotates with the cam, and the rotation of the cam pushes the movable frame. The movable frame moves with the connecting rod, the connecting block and the round rod. The round rod rotates with the rotating plate, the front and rear valve stems and the front and rear three-way ball cores. At the same time, the cam rotates with the left valve stem and the three-way ball core through the fixed rod, the rotating rod and the transmission rod. In this way, multiple three-way ball cores can be rotated simultaneously for sealing and opening without rotating them one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention when viewed from above; Figure 4 For the present invention Figure 3 Schematic diagram of the structure at A in the middle; Figure 5 Schematic diagram of the cross-sectional structure of the mobile frame of the present invention; Figure 6 It is a schematic structural diagram of the transmission rod, rotating rod and fixed rod in the present invention.

[0014] In the figure: 1. Outer tube; 2. Transmission rod; 3. Heat exchange inner tube; 4. Connecting rod; 5. Connecting block; 6. Rotating plate; 7. Round rod; 8. Fixed tube; 9. Sealing block; 10. Fixed cylinder; 11. Inner cylinder; 12. Cam; 13. Rotating block; 14. Groove; 15. Tension spring; 16. Support block; 17. Moving frame; 18. Heat exchange conduit; 19. Connecting cylinder; 20. Valve stem; 21. Three-way ball core; 22. Round hole; 23. Rotating rod; 24. Round plate; 25. Sealing ring; 26. Protrusion; 27. Sewage discharge cylinder; 28. Fixed rod. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figures 1-6The present invention provides a technical solution: a shell-and-tube heat exchanger, comprising an outer tube 1, a heat exchange inner tube 3 is fixed inside the outer tube 1, a heat exchange conduit 18 is fixed inside the heat exchange inner tube 3, the right end of the heat exchange conduit 18 passes through the outer tube 1 and is fixedly connected to the outer tube 1, a fixed tube 8 is fixed to the outer wall of the outer tube 1, two inner tubes 11 are fixed to the inner wall of the heat exchange inner tube 3, protrusions 26 are provided on the outer sides of the fixed tube 8 and the heat exchange conduit 18, a three-way ball core 21 is rotatably connected to the inside of the inner tube 11 and the inside of the protrusion 26, a connecting tube 19 is fixed to the outer wall of the protrusion 26, a sewage cylinder 27 is fixed to the outer wall of the outer tube 1, and the outer walls of the heat exchange inner tube 3 are respectively fixed The two fixed cylinders 10, the interior of the protrusion 26 and the interior of the heat exchange inner tube 3 are respectively rotatably connected with one and two valve stems 20, the bottom end of the valve stem 20 is fixedly connected to the outer wall of the three-way ball core 21, the interior of the sewage cylinder 27, the interior of the fixed cylinder 10 and the interior of the connecting cylinder 19 are all screwed with sealing blocks 9, the tops of the front and rear valve stems 20 are fixed with rotating plates 6, and the tops of the left and right valve stems 20 are fixed with rotating blocks 13, so that the heat exchange conduit 18, the heat exchange inner tube 3 and the fixed tube 8 can be sealed, which can facilitate the cleaning of scale and limit the cleaning liquid from entering the pipes connected to the heat exchange inner tube 3, the heat exchange conduit 18 and the fixed tube 8.

[0017] Preferably, a sealing ring 25 is provided on the outer side of the sealing block 9 , which can enhance the sealing performance of the sealing block 9 .

[0018] Preferably, a movable frame 17 is provided above the outer tube 1, and the outer side wall of the movable frame 17 is slidably connected to two support blocks 16. The bottom of the support block 16 is fixedly connected to the outer side wall of the outer tube 1, and a cam 12 is fixed to the outer side wall of the right valve stem 20. Circular holes 22 are respectively provided at both ends of the movable frame 17. The inside of the circular hole 22 is slidably connected to the connecting rod 4, and the other end of the connecting rod 4 is fixed with a connecting block 5. The inside of the connecting block 5 is rotatably connected to the round rod 7, and the bottom end of the round rod 7 is fixedly connected to the top of the rotating plate 6, so that the front and rear valve stems 20 and the three-way ball core 21 can be rotated.

[0019] Preferably, a circular plate 24 is fixed to the outer wall of the left valve stem 20, and a fixing rod 28 is fixed to the outer wall of the circular plate 24 and the outer wall of the cam 12. The internal rotation of the fixing rod 28 is connected to two rotating rods 23. A transmission rod 2 is provided above the fixing rod 28, and the top end of the rotating rod 23 passes through the transmission rod 2. The rotating rod 23 and the transmission rod 2 are rotatably connected, so that the three-way ball cores 21 of the left and right valve stems 20 can rotate at the same time.

[0020] Preferably, a tension spring 15 is provided on the outer side wall of the movable frame 17 so that the movable frame 17 can be reset.

[0021] Preferably, a through slot 14 is provided on the right side of the movable frame 17 so as not to block the rotation of the fixing rod 28 .

[0022] During operation, the heat exchange hot water enters the heat exchange inner tube 3 and exchanges heat with the liquid inside the heat exchange conduit 18. After the device has been used for a period of time, the right rotating block 13 is rotated, which can make the valve stem 20 and the three-way ball core 21 on the right side rotate. The right valve stem 20 rotates with the cam 12, and the cam 12 rotates to push the moving frame 17. The moving frame 17 moves with the connecting rod 4, the connecting block 5 and the round rod 7. The round rod 7 rotates with the rotating plate 6, the front and rear valve stems 20 and the front and rear three-way ball cores 21. At the same time, the cam 12 rotates with the left valve stem 20 and the three-way ball core 21 through the fixed rod 28, the rotating rod 23 and the transmission rod 2, so that multiple three-way balls can be rotated. The core 21 rotates at the same time to seal, and the through holes of multiple three-way ball cores 21 correspond to the fixed tube 10 and the connecting tube 19 respectively. The scale cleaning liquid is injected into the interior of the heat exchange inner tube 3, the heat exchange conduit 18 and the fixed tube 8, so that the scale inside the heat exchange inner tube 3, the heat exchange conduit 18, the outer tube 1 and the fixed tube 8 can be cleaned. This can facilitate the cleaning of the scale and can also limit the cleaning liquid from entering the interior of the pipe connected to the heat exchange inner tube 3, the heat exchange conduit 18 and the fixed tube 8. After the scale is crushed and melted, remove the sealing block 9 inside the fixed tube 10 and the sewage tube 27, so that the scale cleaning liquid can be discharged.

[0023] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0025] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A shell and tube heat exchanger comprising an outer tube (1), characterized in that: A heat exchange inner tube (3) is fixed inside the outer tube (1), a heat exchange conduit (18) is fixed inside the heat exchange inner tube (3), the right end of the heat exchange conduit (18) passes through the outer tube (1) and is fixedly connected to the outer tube (1), a fixed tube (8) is fixed to the outer side wall of the outer tube (1), two inner tubes (11) are fixed to the inner side wall of the heat exchange inner tube (3), the outer sides of the fixed tube (8) and the heat exchange conduit (18) are both provided with a protrusion (26), and the interior of the inner tube (11) and the interior of the protrusion (26) are both rotatably connected with a three-way ball core (21); A connecting cylinder (19) is fixed to the outer wall of the protrusion (26), a sewage cylinder (27) is fixed to the outer wall of the outer tube (1), and two fixed cylinders (10) are fixed to the outer wall of the heat exchange inner tube (3). The interior of the protrusion (26) and the interior of the heat exchange inner tube (3) are rotatably connected to one and two valve stems (20), respectively. The bottom end of the valve stem (20) is fixedly connected to the outer wall of the three-way ball core (21). The interior of the sewage cylinder (27), the interior of the fixed cylinder (10) and the interior of the connecting cylinder (19) are all screwed with sealing blocks (9). The tops of the front and rear valve stems (20) are fixed with rotating plates (6), and the tops of the left and right valve stems (20) are fixed with rotating blocks (13).

2. The shell and tube heat exchanger according to claim 1, characterized in that: A sealing ring (25) is sleeved on the outer side of the sealing block (9).

3. The shell and tube heat exchanger according to claim 2, characterized in that: A movable frame (17) is provided above the outer tube (1), and the outer side wall of the movable frame (17) is slidably connected to two support blocks (16), and the bottom of the support block (16) is fixedly connected to the outer side wall of the outer tube (1). A cam (12) is fixed to the outer side wall of the valve stem (20) on the right side, and circular holes (22) are respectively provided at both ends of the movable frame (17). A connecting rod (4) is slidably connected inside the circular hole (22), and a connecting block (5) is fixed to the other end of the connecting rod (4). A round rod (7) is rotatably connected inside the connecting block (5), and the bottom end of the round rod (7) is fixedly connected to the top of the rotating plate (6).

4. The shell and tube heat exchanger according to claim 3, characterized in that: A circular plate (24) is fixed to the outer side wall of the valve stem (20) on the left side, and a fixing rod (28) is fixed to the outer side wall of the circular plate (24) and the outer side wall of the cam (12). The fixing rod (28) is internally rotatably connected to two rotating rods (23). A transmission rod (2) is provided above the fixing rod (28), and the top end of the rotating rod (23) passes through the transmission rod (2). The rotating rod (23) and the transmission rod (2) are rotatably connected.

5. The shell and tube heat exchanger according to claim 4, characterized in that: The outer side wall of the movable frame (17) is provided with a tension spring (15).

6. The shell and tube heat exchanger according to claim 5, characterized in that: A through slot (14) is provided on the right side of the movable frame (17).

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