Cold-in-heat type heat exchanger

Abstract

The utility model relates to a cold-in-heat type heat exchanger. The cold-in-heat type heat exchanger comprises a shell side and a heat conduction oil expansion box located above the shell side. An air inlet is formed in the lower part of the shell pass, an air outlet is formed in the upper part, and a tube pass is arranged in the shell pass; the upper part of the tube pass is provided with an oil inlet which is communicated with the heat-conducting oil expansion tank through a pipeline, and the lower part of the tube pass is provided with a blow-off pipe which penetrates through the shell pass. The shell pass is connected with the conduction oil expansion tank, conduction oil in the conduction oil expansion tank is supplemented into a heating system when the temperature in the tube pass is reduced, and the temperature stability of hot fluid in the tube pass is guaranteed; and along with the change of the temperature of the heat-conducting oil, the volume change caused by the temperature change is compensated through the oil inlet. The tube pass is connected with the electric heating rod, and the rod body of the electric heating rod is inserted into the tube pass to further compensate the temperature of fluid in the tube pass.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and particularly relates to a cold-packing hot-type 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 to meet the requirements of a specified process. It is an industrial application of convective heat transfer and heat conduction, also known as a heat exchanger. It has a very wide range of application fields. For example, it can be used for heating in industries such as petroleum, natural gas, chemical industry, pharmaceuticals, food, and textiles. A shell-and-tube heat exchanger is a type of heat exchanger that includes a shell side and a tube side, which are used to introduce cold fluid and hot fluid respectively. During the heat exchange process, the temperature of the hot fluid gradually decreases, resulting in a decrease in the temperature rise rate of the subsequent cold fluid participating in the heat exchange, and it is even difficult to reach the temperature required by the process. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a cold-packing hot-type heat exchanger to solve the technical problems proposed in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A cold-packing hot-type heat exchanger includes: a shell side and a heat-conducting oil expansion tank located above the shell side; an air inlet is provided at the lower part of the shell side, an air outlet is provided at the upper part, and a tube side is provided inside; and an oil inlet is provided at the upper part of the tube side, the oil inlet is communicated with the heat-conducting oil expansion tank through a pipeline, a sewage discharge pipe is provided at the lower part, and the sewage discharge pipe passes through the shell side.

[0006] As a further improvement of the utility model, the tube side is connected with an electric heating rod, and the rod body of the electric heating rod is inserted into the inside of the tube side.

[0007] As a further improvement of the utility model, the rod head of the electric heating rod is connected with the top of the tube side through a flange plate.

[0008] As a further improvement of the utility model, a plurality of baffle plates are provided inside the shell side, the plurality of baffle plates are longitudinally arranged in a staggered manner, and the ends are connected with the inner wall of the shell side.

[0009] As a further improvement of the utility model, a control valve is provided on the pipeline.

[0010] As a further improvement of the utility model, a skirt support is provided at the bottom of the shell side.

[0011] As a further improvement of the utility model, a support frame is provided on the skirt support, and the sewage discharge pipe passes through the inside of the support frame.

[0012] As a further improvement of the present utility model, the heat transfer oil expansion tank is made of stainless steel and is wrapped with rock wool on the outside.

[0013] The beneficial effects of adopting the above technical solutions are as follows:

[0014] In the present utility model, the shell side is connected to the heat transfer oil expansion tank. When the temperature inside the tube side drops, the heat transfer oil in the heat transfer oil expansion tank is replenished into the heating system to ensure the stability of the temperature of the hot fluid inside the tube side; and as the temperature of the heat transfer oil changes, the volume change caused by the temperature change is compensated through the oil inlet. The tube side is connected to the electric heating rod, and the rod body of the electric heating rod is inserted into the inside of the tube side to further compensate the temperature of the fluid inside the tube side.

[0015] This heat exchanger uses heat transfer oil for heating. Since the heat transfer oil has a high heat transfer coefficient, the heat transfer efficiency of the heat exchanger is very high, and heating can be achieved in a short time to quickly reach the required temperature; in addition, the heat transfer oil heat exchanger also has low energy consumption and less pollution; it has the advantages of high efficiency, stability, safety and reliability, and convenient maintenance. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the present utility model;

[0017] Explanation of the marks in the figure: 1 skirt support, 2 drain pipe, 3 air inlet, 4 shell side, 5 tube side, 6 oil inlet, 7 electric heating rod, 8 heat transfer oil expansion tank, 9 air outlet, 10 baffle plate, 11 pipeline, 12 flange, 13 control valve, 14 support frame. Detailed Embodiments

[0018] In order to better understand the purpose, structure and function of the present utility model, the present utility model will be clearly and completely described below with reference to the accompanying drawings.

[0019] As Figure 1 shown, a cold-packaged hot-type heat exchanger includes: a shell side 4 and a heat transfer oil expansion tank 8 located above the shell side 4; an air inlet 3 is provided at the lower part of the shell side 4, and an air outlet 9 is provided at the upper part. In this embodiment, the air inlet 3 and the air outlet 9 are located on the opposite side walls of the shell side 4, and the inside of the shell side 4 is used for injecting cold fluid. A tube side 5 is provided inside the shell side 4, and an oil inlet 6 is provided at the upper part of the tube side 5. The oil inlet 6 is communicated with the heat transfer oil expansion tank 8 through a pipeline 11, and a drain pipe 2 is provided at the lower part. The drain pipe 2 passes through the shell side 4; wherein, the heat transfer oil expansion tank 8 is used for storing the heat transfer oil expanded due to temperature rise and replenishing it into the heating system when the temperature inside the tube side 5 drops to ensure the stability of the temperature of the hot fluid inside the tube side 5, forming a closed loop. As the temperature of the heat transfer oil changes, the volume change caused by the temperature change is compensated through the oil inlet 6.

[0020] In this embodiment, since the heat-conducting oil expansion tank 8 is located above the heat exchanger, the heat-conducting oil enters the tube side 5 due to the height difference. Specifically, the heat-conducting oil expansion tank 8 is made of stainless steel, such as S304 stainless steel, and its exterior is wrapped with rock wool for heat insulation. To facilitate the control of the flow and flow rate of the heat-conducting oil, a control valve 13 is provided on the pipeline 11.

[0021] Furthermore, the tube side 5 is connected to the electric heating rod 7, and the rod body of the electric heating rod 7 is inserted into the interior of the tube side 5, that is, the heat-conducting component is inserted into the interior of the tube side 5 to further compensate for the fluid temperature in the tube side 5; to facilitate the fixation of the electric heating rod 7, the rod head of the electric heating rod 7 is connected to the top of the tube side 5 through a flange 12.

[0022] To increase the heat exchange efficiency between the cold and hot fluids, a plurality of baffle plates 10 are provided inside the shell side 4. The plurality of baffle plates 10 are longitudinally staggered and their ends are connected to the inner wall of the shell side 4. The baffle plates 10 can increase the flow velocity of the fluid in the shell side 4 and the degree of turbulence, improve the heat transfer efficiency, increase the heat transfer coefficient of the fluid in the shell side 4, and at the same time play a supporting role.

[0023] To increase the stability of the shell side 4, a skirt support 1 is provided at the bottom of the shell side 4. And, a support frame 14 is provided on the skirt support 1, and the sewage discharge pipe 2 passes through the interior of the support frame 14.

[0024] Taking the cold fluid as natural gas as an example to introduce the working principle of this heat exchanger: the electric heating rod 7 is inserted into the tube side 5, the heat-conducting oil enters the tube side 5 through the heat-conducting oil expansion tank 8, the pipeline 11 and the oil inlet 6, and is discharged through the sewage discharge pipe 2 after exchanging heat with the fluid in the shell side 4; natural gas enters the shell side 4 through the air inlet 3, the natural gas flow passes through the baffle plates 10 for flow, exchanges heat with the tube side 5, and finally exits the cold-pack heat exchanger through the air outlet 9. This heat exchanger uses heat-conducting oil for heating. Since the heat-conducting oil has a high heat conduction coefficient, the heat transfer efficiency of the heat exchanger is very high, and heating can be achieved in a short time to quickly reach the required temperature; in addition, the heat-conducting oil heat exchanger also has low energy consumption and less pollution; it has the advantages of high efficiency, stability, safety and reliability, and convenient maintenance.

[0025] It can be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A cold-pack and heat-type heat exchanger, characterized in that: It includes: A shell side (4) and a heat transfer oil expansion tank (8) located above the shell side (4); an air inlet (3) is provided at the lower part of the shell side (4), an air outlet (9) is provided at the upper part, and a tube side (5) is provided inside; and an oil inlet (6) is provided at the upper part of the tube side (5), the oil inlet (6) is communicated with the heat transfer oil expansion tank (8) through a pipeline (11), a blowdown pipe (2) is provided at the lower part, and the blowdown pipe (2) passes through the shell side (4).

2. The cold-pack and heat-type heat exchanger according to claim 1, wherein: The tube side (5) is connected to an electric heating rod (7), and the rod body of the electric heating rod (7) is inserted into the inside of the tube side (5).

3. The cold-pack hot-type heat exchanger according to claim 2, characterized in that: The rod head of the electric heating rod (7) is connected to the top of the tube side (5) through a flange plate (12).

4. A cold-pack and hot-type heat exchanger according to claim 1, characterized in that: A plurality of baffle plates (10) are provided inside the shell side (4), the plurality of baffle plates (10) are longitudinally staggered, and the ends are connected to the inner wall of the shell side (4).

5. The cold-pack hot-type heat exchanger according to claim 1, characterized in that: A control valve (13) is provided on the pipeline (11).

6. The cold-pack hot-type heat exchanger according to claim 1, wherein: A skirt support (1) is provided at the bottom of the shell side (4).

7. A cold-pack and hot-type heat exchanger according to claim 6, characterized in that: A support frame (14) is provided on the skirt support (1), and the blowdown pipe (2) passes through the inside of the support frame (14).

8. A cold-pack and hot-type heat exchanger according to claim 1, wherein: The heat transfer oil expansion tank (8) is made of stainless steel, and its outside is wrapped with rock wool.

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