Efficient tubular heat exchanger

Abstract

The utility model provides an efficient tubular heat exchanger, which relates to the technical field of heat exchangers, and comprises two bases, a tank body is fixed between the tops of the two bases, and the end face of the tank body is fixedly connected with a liquid inlet end. According to the utility model, when the tubular heat exchanger operates and the flow meter monitors that the input flow is small, the second electromagnetic valve is controlled to be closed, the first electromagnetic valve is in a communication state, liquid enters part of the heat exchange tubes at the upper position to circulate, and all the liquid is in a state of being attached to the outer wall of the tank body; after the liquid flows back through the backflow end, under the action of natural gravity, the liquid can flow back from part of the heat exchange tube nests at the bottommost part during backflow, that is, the liquid is still in the state of being attached to the outer wall of the tank body, and the liquid can be close to the inner wall of the tank body in the circulation heat exchange process, so that the liquid can exchange heat with outside air, and the heat exchange efficiency is improved. And the heat exchange efficiency of the liquid is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a high-efficiency shell-and-tube heat exchanger. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial productions.

[0003] In the prior art, when a shell-and-tube heat exchanger is in use, when the heat exchanger is in normal flow for circulation and heat exchange, the liquid delivered cannot all flow into the tubes, which will cause the liquid to naturally flow into the tubes after entering the heat exchanger. Since the partition is located at the center of the liquid inlet end, the liquid will flow into the tubes near the center. The tubes at this position are far away from the outer wall of the heat exchanger, and the contact surface between the outer wall of the heat exchanger and the air cannot be well utilized for heat exchange and cooling, which affects the use efficiency of the heat exchanger. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that when a shell-and-tube heat exchanger in the prior art is used and the heat exchanger is in a normal flow rate for circulation and heat exchange, the liquid delivered cannot all flow into the shell and tube, which will result in the liquid naturally flowing into the shell and tube after entering the heat exchanger. Since the partition is located at the center of the liquid inlet end, the liquid will enter the shell and tube near the center for circulation. The shell and tube at this position is far away from the outer wall of the heat exchanger, and the contact surface between the outer wall of the heat exchanger and the air cannot be well utilized for heat exchange and cooling, which affects the use efficiency of the heat exchanger. A high-efficiency shell-and-tube heat exchanger is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-efficiency shell-and-tube heat exchanger, comprising: two bases, a tank body fixed between the tops of the two bases, the end face of the tank body fixedly connected to a liquid inlet end, and the other end face of the tank body fixedly connected to a return end; a diverter assembly, the diverter assembly is located above the liquid inlet end, the diverter assembly includes a liquid inlet pipe, the end face of the liquid inlet pipe is fixedly connected to a connecting pipe, the end face of the connecting pipe is fixedly connected to a diverter pipe, the outer surface of the diverter pipe is fixedly connected to a first input pipe, and the outer surface of the diverter pipe is fixedly connected to a second input pipe at a position close to the first input pipe.

[0006] Preferably, the inner surface of the tank body is fixedly connected with heat exchange tubes, and the liquid inlet end and the return end are both matched with the heat exchange tubes.

[0007] Preferably, a partition is fixedly connected to the inner surface of the liquid inlet end, and the outer surface of the partition is in contact with the outer surface of the heat exchange tubes.

[0008] Preferably, a plurality of connecting tubes are evenly and fixedly connected to the outer surface of the heat exchange tubes on one side close to the liquid inlet end, and the connecting tubes are close to the tube wall above the liquid inlet end.

[0009] Preferably, a connecting block is fixedly connected between the end surfaces of the plurality of connecting pipes, and a third input pipe is fixedly connected to the outer surface of the connecting block.

[0010] Preferably, the first input pipe is fixedly connected to the liquid inlet end, and the first input pipe is connected to the third input pipe.

[0011] Preferably, the second input pipe is fixedly connected to the liquid inlet end, and the second input pipe is communicated with the liquid inlet end.

[0012] Preferably, the outer surface of the liquid inlet end away from the first input pipe is fixedly connected to the output pipe, the outer surface of the tank body is fixedly connected to the first cold flow pipe, and the outer surface of the tank body is fixedly connected to the second cold flow pipe.

[0013] Preferably, a flow meter is provided inside the liquid inlet pipe, and a first solenoid valve is provided inside the first input pipe.

[0014] Preferably, a second solenoid valve is provided inside the second input pipe, and a cover plate is provided on the end surface of the diverter pipe.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are:

[0016] 1. In the utility model, when the shell-and-tube heat exchanger is in operation, when the flow meter detects that the input flow is small, the second solenoid valve is controlled to be closed, and the first solenoid valve is in a connected state, and the liquid will enter the part of the heat exchange tubes at the upper position for circulation, and all the liquid will be in a state of being in contact with the outer wall of the tank body. After the liquid flows back through the reflux end, under the action of natural gravity, the liquid will flow back from the bottom part of the heat exchange tubes when it flows back, that is, the liquid is still in a state of being in contact with the outer wall of the tank body. During the circulation and heat exchange process, the liquid can be closer to the inner wall of the tank body, so that the liquid can exchange heat with the outside air, which effectively improves the heat exchange efficiency of the liquid.

[0017] 2. In the present invention, by setting the cover plate, the inner wall of the diverter pipe can be easily cleaned after the cover plate is opened, thereby avoiding liquid accumulation at the connection of the inner wall of the diverter pipe and improving the flow efficiency of the diverter pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a high-efficiency shell-and-tube heat exchanger is proposed for the utility model;

[0019] Figure 2 A bottom view of a high-efficiency shell-and-tube heat exchanger is proposed for the utility model;

[0020] Figure 3 A sectional view of the tank structure of a high-efficiency shell-and-tube heat exchanger is proposed for the utility model;

[0021] Figure 4 The utility model provides a schematic structural diagram of a flow diversion component of a high-efficiency shell-and-tube heat exchanger.

[0022] Legend: 1. Base; 2. Tank body; 3. Liquid inlet end; 4. Return end; 5. Diverter assembly; 501. Liquid inlet pipe; 502. Flow meter; 503. Connecting pipe; 504. Diverter pipe; 505. Cover plate; 506. First input pipe; 507. First solenoid valve; 508. Second input pipe; 509. Second solenoid valve; 6. Heat exchange tubes; 7. Output pipe; 8. First cold flow pipe; 9. Second cold flow pipe; 10. Connecting pipe; 11. Connecting block; 12. Third input pipe; 13. Partition. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0025] Embodiment 1, as Figure 1-Figure 4As shown, the utility model provides a high-efficiency shell-and-tube heat exchanger, comprising: two bases 1, a tank body 2 is fixed between the tops of the two bases 1, an end face of the tank body 2 is fixedly connected to a liquid inlet end 3, and the other end face of the tank body 2 is fixedly connected to a reflux end 4; a shunt component 5, the shunt component 5 is located above the liquid inlet end 3, the shunt component 5 comprises a liquid inlet pipe 501, an end face of the liquid inlet pipe 501 is fixedly connected to a connecting pipe 503, an end face of the connecting pipe 503 is fixedly connected to a shunt pipe 504, an outer surface of the shunt pipe 504 is fixedly connected to a first input pipe 506, an outer surface of the shunt pipe 504 is fixedly connected to a side near the first input pipe 506, a second input pipe 508 is fixedly connected to an inner surface of the tank body 2, the liquid inlet end 3 and the reflux end 4 are both matched with the heat exchange tubes 6, a partition 13 is fixedly connected to the inner surface of the liquid inlet end 3, an outer surface of the partition 13 is in contact with the outer surface of the heat exchange tubes 6, and an outer surface of the heat exchange tubes 6 near the liquid inlet end 3 is fixedly connected to the outer surface of the heat exchange tubes 6. A plurality of connecting tubes 10 are evenly and fixedly connected on the surface, the connecting tubes 10 are close to the tube wall above the liquid inlet end 3, a connecting block 11 is fixedly connected between the end faces of the plurality of connecting tubes 10, a third input tube 12 is fixedly connected to the outer surface of the connecting block 11, a first input tube 506 is fixedly connected to the liquid inlet end 3, the first input tube 506 and the third input tube 12 are connected, a second input tube 508 is fixedly connected to the liquid inlet end 3, the second input tube 508 and the liquid inlet end 3 are connected, an output tube 7 is fixedly connected to the outer surface of the liquid inlet end 3 away from the first input tube 506, a first cold flow tube 8 is fixedly connected to the outer surface of the tank body 2, a second cold flow tube 9 is fixedly connected to the outer surface of the tank body 2, a flow meter 502 is matched with the inside of the liquid inlet tube 501, a first solenoid valve 507 is matched with the inside of the first input tube 506, a second solenoid valve 509 is matched with the inside of the second input tube 508, and a cover plate 505 is provided on the end surface of the shunt tube 504.

[0026] The effect achieved by the entire embodiment 1 is that when the shell-and-tube heat exchanger is in operation, the cold flow circulates inside the tank body 2 through the first cold flow pipe 8 and the second cold flow pipe 9, and then the high-temperature liquid is connected to the liquid inlet pipe 501 for heat exchange and cooling. The liquid will flow to the shunt pipe 504 through the connection pipe 503. When the liquid flows through the liquid inlet pipe 501, the liquid inlet flow rate can be monitored by using the flow meter 502. When the flow rate is detected to be large, the first solenoid valve 507 and the second solenoid valve 509 are controlled to open, so that the first input pipe 506 and the second input pipe 508 are both in a connected state. At this time, the liquid will flow through the shunt pipe 504, and then flow into the liquid inlet end 3 at full speed through the first input pipe 506 and the second input pipe 508. The liquid will flow through a plurality of evenly arranged heat exchange tubes 6. The liquid flowing in the heat exchange tubes 6 contacts with the cold flow inside the tank body 2, and then the liquid re-enters the heat exchange tubes 6 through the reflux end 4 for reflux. The refluxed liquid The liquid passes through the tank body 2 again for heat exchange and cooling, and is finally discharged from the output pipe 7 to complete the cooling process. When the flow meter 502 detects that the input flow is small, the second solenoid valve 509 is controlled to be closed, and the first solenoid valve 507 is in a connected state. At this time, the liquid will only flow out from the first input pipe 506 position, and then the liquid will pass through the third input pipe 12, the connecting block 11 and the connecting pipe 10 to enter the part of the heat exchange tubes 6 at the upper position for circulation. After the liquid with a lower flow rate is diverted, when it circulates and exchanges heat only from the part of the heat exchange tubes 6 at the upper position, all the liquid will be in a state of adhering to the outer wall of the tank body 2, and after the liquid flows back through the reflux end 4, under the action of natural gravity, the liquid will flow back from the bottom part of the heat exchange tubes 6 when it flows back, that is, the liquid is still in a state of adhering to the outer wall of the tank body 2. During the circulation and heat exchange process, the liquid can be closer to the inner wall of the tank body 2, so that the liquid can exchange heat with the outside air, effectively improving the heat exchange efficiency of the liquid.

[0027] Embodiment 2, as Figure 1-Figure 4 As shown, a cover plate 505 is provided on the end surface of the shunt pipe 504 .

[0028] The effect achieved by the entire embodiment 2 is that, through the setting of the cover plate 505, the inner wall of the diverter tube 504 can be easily cleaned after the cover plate 505 is opened, thereby avoiding liquid accumulation at the connection of the inner wall of the diverter tube 504 and improving the flow efficiency of the diverter tube 504.

[0029] Working principle: When the shell-and-tube heat exchanger is in operation, the first cold flow pipe 8 and the second cold flow pipe 9 are used to circulate the cold flow inside the tank body 2, and then the high-temperature liquid is connected to the liquid inlet pipe 501 for heat exchange and cooling. The liquid will flow to the shunt pipe 504 through the connection pipe 503. When the liquid flows through the liquid inlet pipe 501, the liquid inlet flow rate can be monitored by using the flow meter 502. When the flow rate is detected to be large, the first solenoid valve 507 and the second solenoid valve 509 are controlled to open, so that the first input pipe 506 and the second The input pipes 508 are all in a connected state. At this time, the liquid will flow through the shunt pipe 504, and then flow into the liquid inlet end 3 at full speed through the first input pipe 506 and the second input pipe 508. The liquid will flow through a plurality of evenly arranged heat exchange tubes 6. The liquid flowing in the heat exchange tubes 6 contacts the cold flow inside the tank body 2. Then the liquid re-enters the heat exchange tubes 6 through the reflux end 4 for reflux. The refluxed liquid passes through the tank body 2 again for heat exchange and cooling, and is finally discharged from the output pipe 7 to complete the cooling process. The flow meter 502 monitors When the input flow rate is small, the second solenoid valve 509 is controlled to be closed, and the first solenoid valve 507 is in a connected state. At this time, the liquid will only flow out from the first input pipe 506, and then the liquid will enter the part of the heat exchange tubes 6 at the upper position through the connection of the third input pipe 12, the connecting block 11 and the connecting pipe 10 for circulation. After the liquid with a lower flow rate is diverted, it will only circulate and exchange heat from the part of the heat exchange tubes 6 at the upper position. All the liquid will be in a state of adhering to the outer wall of the tank body 2, and after the liquid flows back through the reflux end 4, Under the action of natural gravity, when the liquid refluxes, it will reflux from the bottom part of the heat exchange array tube 6, that is, the liquid is still in a state of adhering to the outer wall of the tank body 2. The liquid can be closer to the inner wall of the tank body 2 during the circulation and heat exchange process, so that the liquid can exchange heat with the outside air, which effectively improves the heat exchange efficiency of the liquid. Through the setting of the cover plate 505, the inner wall of the diverter pipe 504 can be easily cleaned after the cover plate 505 is opened, avoiding liquid accumulation at the connection of the inner wall of the diverter pipe 504, thereby improving the circulation efficiency of the diverter pipe 504.

[0030] The wiring diagrams of the flow meter 502, the first solenoid valve 507 and the second solenoid valve 509 in the present invention are common knowledge in the art, and their working principles are already known technologies. The models are selected according to actual use, so the control method and wiring arrangement of the flow meter 502, the first solenoid valve 507 and the second solenoid valve 509 are no longer explained in detail.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A high-efficiency shell-and-tube heat exchanger, characterized in that: include: Two bases (1), a tank body (2) is fixed between the tops of the two bases (1), a liquid inlet end (3) is fixedly connected to an end surface of the tank body (2), and a return end (4) is fixedly connected to the other end surface of the tank body (2); A flow diversion component (5), the flow diversion component (5) being located above the liquid inlet end (3), the flow diversion component (5) comprising a liquid inlet pipe (501), the end surface of the liquid inlet pipe (501) being fixedly connected to a connecting pipe (503), the end surface of the connecting pipe (503) being fixedly connected to a flow diversion pipe (504), the outer surface of the flow diversion pipe (504) being fixedly connected to a first input pipe (506), and the outer surface of the flow diversion pipe (504) being fixedly connected to a second input pipe (508) at a position close to the first input pipe (506).

2. The high-efficiency shell-and-tube heat exchanger according to claim 1 is characterized in that: The inner surface of the tank body (2) is fixedly connected with a heat exchange tube (6), and the liquid inlet end (3) and the return end (4) are both matched with the heat exchange tube (6).

3. The high-efficiency shell-and-tube heat exchanger according to claim 2 is characterized in that: A partition plate (13) is fixedly connected to the inner surface of the liquid inlet end (3), and the outer surface of the partition plate (13) is in contact with the outer surface of the heat exchange tubes (6).

4. The high-efficiency shell-and-tube heat exchanger according to claim 2 is characterized in that: A plurality of connecting tubes (10) are evenly and fixedly connected to the outer surface of the heat exchange tube array (6) on one side close to the liquid inlet end (3), and the connecting tubes (10) are located close to the tube wall above the liquid inlet end (3).

5. The high-efficiency shell-and-tube heat exchanger according to claim 4 is characterized in that: A connecting block (11) is fixedly connected between the end surfaces of the plurality of connecting pipes (10), and a third input pipe (12) is fixedly connected to the outer surface of the connecting block (11).

6. The high-efficiency shell-and-tube heat exchanger according to claim 5, characterized in that: The first input pipe (506) is fixedly connected to the liquid inlet end (3), and the first input pipe (506) is connected to the third input pipe (12).

7. The high-efficiency shell-and-tube heat exchanger according to claim 1 is characterized in that: The second input pipe (508) is fixedly connected to the liquid inlet end (3), and the second input pipe (508) is connected to the liquid inlet end (3).

8. The high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that: An output pipe (7) is fixedly connected to the outer surface of the liquid inlet end (3) on a side away from the first input pipe (506), a first cold flow pipe (8) is fixedly connected to the outer surface of the tank body (2), and a second cold flow pipe (9) is fixedly connected to the outer surface of the tank body (2).

9. The high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that: The liquid inlet pipe (501) is internally provided with a flow meter (502), and the first input pipe (506) is internally provided with a first solenoid valve (507).

10. The high-efficiency shell-and-tube heat exchanger according to claim 1, characterized in that: The second input pipe (508) is internally provided with a second solenoid valve (509), and the end surface of the diverter pipe (504) is provided with a cover plate (505).

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