Up-down serial shell-and-tube heat exchanger

Abstract

The utility model provides an up-down serial shell-and-tube heat exchanger, and belongs to the technical field of shell-and-tube heat exchangers. Comprising a first heat exchange pipe, a second heat exchange pipe and a heat exchange mechanism, the first heat exchange pipe communicates with the second heat exchange pipe through a connecting pipe, the heat exchange mechanism comprises a round bin, the round bin is fixedly installed at the bottom of the second heat exchange pipe, an extraction pump is fixedly installed on the outer surface of the round bin, a liquid inlet pipe is fixedly installed at the top of the first heat exchange pipe, and a liquid outlet pipe is fixedly installed at the bottom of the liquid inlet pipe. The liquid outlet end of the draw-off pump is fixedly connected with a round pipe, and one end of the round pipe is installed in the liquid inlet pipe. The first heat exchange pipe and the second heat exchange pipe are arranged to be in an inclined state, so that fluid can conveniently and automatically flow, the time of the fluid is shortened, the heating effect on the liquid is improved, the liquid can be extracted and repeatedly heated by arranging the extraction pump, it is ensured that the liquid can be heated, the needed production requirement is met, and use is met.

Description

Technical Field

[0001] The utility model relates to the technical field of shell and tube heat exchangers, in particular to an upper and lower series shell and tube heat exchanger. Background Art

[0002] The upper and lower series shell and tube heat exchanger is a common type of heat exchanger, which is usually used for heat transfer in industrial fields, such as the chemical industry, power industry, pharmaceutical industry, etc. It consists of a shell and multiple tubes. The heat transfer fluid, such as hot liquid or steam, flows through the tubes, while the fluid to be heated or cooled flows through the shell to achieve heat exchange.

[0003] The current method of heat exchange is to transport the hot fluid to the small pipe inside the heat exchange tube, the hot fluid flows in the small pipe, and then the liquid or gas to be exchanged is introduced into the inside of the heat exchange tube shell. The hot fluid flows inside the small pipe, releasing heat, thereby heating the liquid to be exchanged.

[0004] Although the above method can achieve heat exchange, the hot fluid is mostly extracted through the pump body, so that the hot fluid can flow inside the small pipe to achieve heating of the liquid or gas at various positions of the heat exchange tube. It is precisely because the hot fluid is extracted through the pump body that the hot fluid will flow faster inside the small pipe, thereby reducing the heat conversion efficiency and affecting the use effect. Therefore, we propose a shell and tube heat exchanger with upper and lower series connection to solve the above problems. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides an upper and lower series shell and tube heat exchanger that overcomes the above technical problems or at least partially solves the above problems.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a shell-and-tube heat exchanger connected in series up and down, comprising a first heat exchange tube and a second heat exchange tube, the first heat exchange tube and the second heat exchange tube are connected through a connecting tube, the first heat exchange tube and the second heat exchange tube are respectively provided with cleaning mechanisms inside, the cleaning mechanisms comprising a vertical plate, a round roller and a cleaning brush, the vertical plate is fixedly installed at the bottom of the first heat exchange tube and the second heat exchange tube, one side of the vertical plate is rotatably connected to the round roller, the outer surface of the round roller is fixedly connected to the cleaning brush, two support rods of different heights are fixedly installed at the bottom of the second heat exchange tube, one end of the second heat exchange tube is fixedly connected to a cylindrical barrel, the interior of the cylindrical barrel is connected to the interior of the pipeline;

[0008] A heat exchange mechanism, the heat exchange mechanism comprising:

[0009] A round silo, wherein the round silo is fixedly installed at the bottom of the second heat exchange tube;

[0010] An extraction pump, the extraction pump is fixedly mounted on the outer surface of the silo;

[0011] The liquid inlet pipe is fixedly installed on the top of the first heat exchange tube, the liquid outlet end of the extraction pump is fixedly connected to the round tube, and one end of the round tube is installed inside the liquid inlet pipe.

[0012] In a preferred solution, the first heat exchange tube and the second heat exchange tube are arranged at a certain angle, and a supporting connecting rod is fixedly connected between the first heat exchange tube and the second heat exchange tube.

[0013] In a preferred solution, a plurality of pipes are installed inside the first heat exchange tube and the second heat exchange tube, and the pipes run through the interior of the connecting tube, and one end of all the pipes is connected to the liquid inlet cylinder.

[0014] In a preferred solution, the liquid inlet end of the extraction pump is fixedly connected to a connecting pipe, and one end of the connecting pipe is fixedly installed inside the silo.

[0015] In a preferred solution, a temperature sensor is fixedly connected to the outer surface of the silo, a contact on the temperature sensor is arranged inside the silo, the temperature sensor is electrically connected to a PLC controller, and the PLC controller is electrically connected to a buzzer.

[0016] The utility model provides a shell and tube heat exchanger connected in series up and down, and its beneficial effects include:

[0017] 1. By setting the first heat exchange tube and the second heat exchange tube in an inclined state, the fluid can flow automatically, thereby slowing down the time of the fluid, thereby improving the heating effect of the liquid. By setting an extraction pump, the liquid can be extracted and heated repeatedly to ensure that the liquid can be heated to meet the required production requirements and meet the use.

[0018] 2. Rotatable rollers are installed inside the first heat exchange tube and the second heat exchange tube respectively, and a cleaning brush is fixedly connected to the outer surface of the roller. When liquid is added to the first heat exchange tube through the liquid inlet pipe, the roller is driven to rotate, thereby driving the cleaning brush to rotate. The cleaning brush cleans the bottom of the first heat exchange tube and the second heat exchange tube to remove impurities and keep the interior clean for easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the location of the PLC controller of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the first heat exchange tube and the second heat exchange tube of the utility model;

[0023] Figure 4 This is a schematic diagram of the cleaning mechanism structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the extraction pump of the utility model;

[0025] In the figure: 1. first heat exchange tube; 2. second heat exchange tube; 3. connecting tube; 4. heat exchange mechanism; 41. round silo; 42. extraction pump; 43. liquid inlet pipe; 431. round tube; 5. supporting connecting rod; 6. pipeline; 7. liquid inlet cylinder; 8. connecting pipe; 9. temperature sensor; 10. PLC controller; 11. buzzer; 12. cleaning mechanism; 121. vertical plate; 122. round roller; 123. cleaning brush; 13. supporting rod; 14. cylindrical tube. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example

[0028] Reference Figure 1-Figure 5 The utility model provides a technical solution: a shell and tube heat exchanger connected in series up and down, comprising a first heat exchange tube 1, a second heat exchange tube 2, and a heat exchange mechanism 4. The first heat exchange tube 1 and the second heat exchange tube 2 are connected through a connecting pipe 3. The heat exchange mechanism 4 comprises a round silo 41, which is fixedly installed at the bottom of the second heat exchange tube 2, an extraction pump 42 is fixedly installed on the outer surface of the round silo 41, and a liquid inlet pipe 43 is fixedly installed on the top of the first heat exchange tube 1. The liquid outlet end of the extraction pump 42 is fixedly connected to a round pipe 431, and one end of the round pipe 431 is installed inside the liquid inlet pipe 43.

[0029] In a preferred embodiment, the first heat exchange tube 1 and the second heat exchange tube 2 are arranged at a certain angle, and a supporting connecting rod 5 is fixedly connected between the first heat exchange tube 1 and the second heat exchange tube 2. In order to improve the heating effect of the liquid, the first heat exchange tube 1 and the second heat exchange tube 2 are connected through a connecting pipe 3 to increase the flow distance, thereby improving the heat exchange effect. At the same time, in order to ensure that the first heat exchange tube 1 and the second heat exchange tube 2 can be used stably, a supporting connecting rod 5 is fixedly installed between the first heat exchange tube 1 and the second heat exchange tube 2, so that the device can be used stably.

[0030] In a preferred embodiment, a plurality of pipes 6 are installed inside the first heat exchange tube 1 and the second heat exchange tube 2. The pipes 6 run through the interior of the connecting tube 3. One end of all the pipes 6 is connected to the liquid inlet cylinder 7. The device releases heat to heat the liquid inside the heat exchange tube by flowing a hot fluid inside the pipe 6, thereby achieving heat exchange. Therefore, in order to increase the heat inside the heat exchange tube, a plurality of pipes 6 are provided to increase the amount of heat flow, thereby quickly heating the liquid.

[0031] In a preferred embodiment, the liquid inlet end of the extraction pump 42 is fixedly connected to a connecting pipe 8, one end of which is fixedly installed inside the silo 41. The liquid inside the first heat exchange tube 1 will flow to the inside of the second heat exchange tube 2, and finally flow to the inside of the silo 41. When the temperature of the liquid inside the silo 41 does not reach the set temperature, the liquid is extracted through the connecting pipe 8 and transported into the inside of the first heat exchange tube 1 again to continue heating it until the set temperature is reached.

[0032] Since the devices are all automatically operated, when the liquid inside the heat exchange tube reaches the set temperature, it is necessary to remind the staff to unload in time, so a temperature sensor 9 is fixedly connected to the outer surface of the silo 41, and the contact on the temperature sensor 9 is set inside the silo 41. The temperature sensor 9 is electrically connected to the PLC controller 10, and the PLC controller 10 is electrically connected to the buzzer 11. When the temperature of the liquid inside the silo 41 reaches the set temperature, the PLC controller 10 will control the buzzer 11 to sound an alarm, thereby reminding the staff to unload in time, which is convenient for use.

[0033] Liquid flows inside the first heat exchange tube 1 and the second heat exchange tube 2. In the long run, stains will inevitably adhere to the inner wall of the heat exchange tube. In order not to affect the subsequent normal use of the liquid, the inner wall of the heat exchange tube needs to be cleaned regularly. Therefore, a cleaning mechanism 12 is installed inside the first heat exchange tube 1 and the second heat exchange tube 2 respectively. The cleaning mechanism 12 includes a vertical plate 121, a round roller 122 and a cleaning brush 123. The vertical plate 121 is fixedly installed at the bottom of the first heat exchange tube 1 and the second heat exchange tube 2. One side of the vertical plate 121 is rotatably connected to the round roller 122. The outer surface of the round roller 122 is fixedly connected to a cleaning brush 123, and two support rods 13 of different heights are fixedly installed on the bottom of the second heat exchange tube 2. One end of the second heat exchange tube 2 is fixedly connected to a cylindrical tube 14, and the interior of the cylindrical tube 14 is connected to the interior of the pipeline 6. During operation, adding liquid to the first heat exchange tube 1 through the liquid inlet pipe 43 will drive the round roller 122 to rotate, thereby driving the cleaning brush 123 to rotate. The cleaning brush 123 cleans the bottom of the first heat exchange tube 1 and the second heat exchange tube 2 to remove impurities and keep the interior clean for easy use.

[0034] Specifically, the working process or working principle of an upper and lower series shell and tube heat exchanger is: the current heat exchange method is to transport the hot fluid to the small pipe inside the heat exchange tube, the hot fluid flows in the small pipe, and then the liquid or gas to be exchanged is introduced into the inside of the heat exchange tube shell. The hot fluid flows inside the small pipe, releasing heat, thereby heating the liquid to be exchanged.

[0035] Although the above method can achieve heat exchange, the hot fluid is mostly extracted through the pump body, so that the hot fluid can flow inside the small pipe to achieve heating of the liquid or gas at various positions of the heat exchange pipe. It is precisely because the hot fluid is extracted through the pump body that the hot fluid will flow faster inside the small pipe, thereby reducing the heat conversion efficiency and affecting the use effect. Therefore, the present device is designed to solve the problem. By connecting an external power supply, the temperature sensor 9, the extraction pump 42, the PLC controller 10 and the buzzer 11 are powered so that they can be used normally. When performing a heat exchange operation, the heat flow is introduced into the interior of the liquid inlet cylinder 7. At this time, the heat flow will be diverted to the interior of each pipe 6 and flow inside the pipe 6. Since the present device sets the first heat exchange pipe 1 and the second heat exchange pipe 2 in an inclined state respectively, the heat flow will automatically flow inside the pipe 6, effectively replacing the extraction method of the pump body. At this time, the flow rate of the heat flow will also slow down, thereby improving the heating efficiency of the liquid inside the first heat exchange pipe 1 and the second heat exchange pipe 2.

[0036] When adding fluid into the liquid inlet cylinder 7, the device also needs to add liquid into the first heat exchange tube 1 and the second heat exchange tube 2. The liquid will also flow inside the first heat exchange tube 1 and the second heat exchange tube 2. The fluid flows inside the pipe 6 to heat the liquid inside the two heat exchange tubes to achieve heat conversion, which is convenient for use. The fluid inside the pipe 6 will flow into the interior of the cylindrical tube 14 and then be collected. The device needs to continuously add fluid to the liquid inlet cylinder 7.

[0037] To ensure normal production, the liquid inside the first heat exchange tube 1 will flow into the second heat exchange tube 2, and then flow from the second heat exchange tube 2 to the inside of the silo 41. During the flow, the liquid will continue to exchange heat through the fluid inside the pipe 6. After the liquid flows into the silo 41, the temperature of the heated liquid can be detected by the temperature sensor 9. If the required temperature is reached, the liquid inside the silo 41 can be directly taken out. Otherwise, the liquid inside the silo 41 is extracted by the extraction pump 42, and the liquid is transported to the inside of the liquid inlet pipe 43 again through the circular pipe 431, and then transported to the inside of the first heat exchange tube 1 through the liquid inlet pipe 43, and the liquid can continue to be heated until the required temperature is reached.

[0038] The device improves the heat exchange effect on the liquid by slowing down the flow rate of the fluid, thereby meeting the use requirements.

[0039] It should be noted that the extraction pump 42, temperature sensor 9, PLC controller 10 and buzzer 11 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they will not be described in detail.

Claims

1. A shell and tube heat exchanger connected in series up and down, characterized in that: It comprises a first heat exchange tube (1) and a second heat exchange tube (2), wherein the first heat exchange tube (1) and the second heat exchange tube (2) are connected via a connecting tube (3); A heat exchange mechanism (4), wherein the heat exchange mechanism (4) comprises: A round silo (41), wherein the round silo (41) is fixedly installed at the bottom of the second heat exchange tube (2); An extraction pump (42), wherein the extraction pump (42) is fixedly mounted on the outer surface of the silo (41); A liquid inlet pipe (43), wherein the liquid inlet pipe (43) is fixedly mounted on the top of the first heat exchange tube (1); the liquid outlet end of the extraction pump (42) is fixedly connected to a circular pipe (431); one end of the circular pipe (431) is mounted inside the liquid inlet pipe (43).

2. The shell and tube heat exchanger connected in series up and down according to claim 1, characterized in that: The first heat exchange tube (1) and the second heat exchange tube (2) are arranged at a certain angle, and a supporting connecting rod (5) is fixedly connected between the first heat exchange tube (1) and the second heat exchange tube (2).

3. The shell and tube heat exchanger connected in series up and down according to claim 2, characterized in that: A plurality of pipes (6) are installed inside the first heat exchange tube (1) and the second heat exchange tube (2), and the pipes (6) run through the interior of the connecting tube (3), and one end of all the pipes (6) is connected to the liquid inlet cylinder (7).

4. The shell and tube heat exchanger connected in series up and down according to claim 3, characterized in that: The liquid inlet end of the extraction pump (42) is fixedly connected to a connecting pipe (8), and one end of the connecting pipe (8) is fixedly installed inside the silo (41).

5. The shell and tube heat exchanger connected in series up and down according to claim 4, characterized in that: The outer surface of the silo (41) is fixedly connected to a temperature sensor (9), a contact on the temperature sensor (9) is arranged inside the silo (41), the temperature sensor (9) is electrically connected to a PLC controller (10), and the PLC controller (10) is electrically connected to a buzzer (11).

6. The shell and tube heat exchanger connected in series up and down according to claim 5, characterized in that: A cleaning mechanism (12) is installed inside the first heat exchange tube (1) and the second heat exchange tube (2), respectively. The cleaning mechanism (12) comprises a vertical plate (121), a round roller (122) and a cleaning brush (123).

7. The shell and tube heat exchanger connected in series up and down according to claim 6, characterized in that: The vertical plate (121) is fixedly installed at the bottom of the first heat exchange tube (1) and the second heat exchange tube (2); one side of the vertical plate (121) is rotatably connected to a round roller (122); and the outer surface of the round roller (122) is fixedly connected to a cleaning brush (123).

8. The shell and tube heat exchanger connected in series up and down according to claim 7, characterized in that: Two support rods (13) of different heights are fixedly installed at the bottom of the second heat exchange tube (2); one end of the second heat exchange tube (2) is fixedly connected to a cylindrical tube (14); the interior of the cylindrical tube (14) is connected to the interior of the pipeline (6).

Images