Spiral heat exchange tube and heat exchange device

Abstract

The utility model provides a spiral heat exchange tube and a heat exchange device, and belongs to the technical field of heat exchange. The problems that in the prior art, a heat exchanger is low in heat exchange efficiency, and heat distribution of fluid in a heat exchange device is uneven are solved. The heat exchanger comprises an outer-layer coil pipe and an inner-layer coil pipe, the inner-layer coil pipe is nested in the outer-layer coil pipe, the space between the outer-layer coil pipe and the inner-layer coil pipe is a hot water cavity, the inner space of the inner-layer coil pipe is a fluid cavity, the flow speed of water in the hot water cavity is larger than the flow speed of liquid in the fluid cavity, and multiple groups of heat exchange pipes are arranged in parallel. And a plurality of inner-layer coil pipes are nested in the outer-layer coil pipe. The heat exchanger is mainly used for heat exchange of the heat exchanger.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchange, and particularly relates to a spiral heat exchange tube and a heat exchange device. Background Art

[0002] A heat exchanger is a device used to transfer heat from one fluid to another while keeping the two fluids isolated from each other. Heat exchangers are commonly used in industrial processes, including chemical, petroleum, power, pharmaceutical, and food processing, for purposes such as controlling temperature, heating or cooling fluids, and recovering heat energy.

[0003] Heat exchange tubes are an important component of heat exchangers and are pipe structures used to transfer heat. Most of the existing heat exchange tubes are straight tubes, spiral tubes, curved tubes or U-shaped tubes. These heat exchange tubes are pipes through which internal fluid passes, and heat is transferred to the external fluid through the tube wall. This heat exchange method has low heat exchange efficiency and uneven heat distribution of the fluid in the heat exchange device. Utility Model Content

[0004] In view of this, the utility model aims to provide a spiral heat exchange tube and a heat exchange device to solve the problems of low heat exchange efficiency of the heat exchanger and uneven heat distribution of the fluid in the heat exchange device in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A spiral heat exchange tube comprises an outer coil and an inner coil, wherein the inner coil is nested in the outer coil, the space between the outer coil and the inner coil is a hot water cavity, and the inner space of the inner coil is a fluid cavity.

[0007] Furthermore, the water flow rate in the hot water chamber is greater than the liquid flow rate in the fluid chamber.

[0008] Furthermore, the heat exchange tubes are provided in multiple groups, and the multiple groups of heat exchange tubes are arranged in parallel.

[0009] Furthermore, a plurality of inner layer coils are nested in the outer layer coil.

[0010] A heat exchange device comprises a spiral heat exchange tube, the center of which is sleeved on the outside of a heat flow pipe of the heat exchange device.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model adopts a structure in which an inner coil is nested in an outer coil. Heating circulating water is introduced into the hot water cavity to heat the inner coil, thereby heating the fluid in the fluid cavity. This heat transfer method can ensure that the fluid in the fluid cavity is heated evenly, and the spiral coil design can improve the heat exchange efficiency.

[0013] 2. The utility model has multiple inner coils inside the outer coil, which can make the fluid heated more evenly.

[0014] 3. The utility model can arrange multiple groups of spiral heat exchange tubes in parallel according to needs, thereby being able to heat a large amount of fluid at the same time, further improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0016] Figure 1 This is a structural schematic diagram of a spiral heat exchange tube according to the utility model;

[0017] Figure 2 It is a schematic diagram of multiple groups of heat exchange tubes arranged in parallel;

[0018] Figure 3 It is a schematic diagram of a plurality of inner coils arranged inside an outer coil;

[0019] Figure 4 This is a schematic diagram of the heat exchange tube installed in the heat exchange device.

[0020] 1-outer coil, 2-inner coil, 3-hot water chamber, 4-fluid chamber. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely explain the technical solutions in the embodiments of the utility model. It should be noted that the embodiments and features in the embodiments of the utility model can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0022] See also Figure 1-4 To illustrate this embodiment, a spiral heat exchange tube includes an outer coil 1 and an inner coil 2, wherein the inner coil 2 is nested in the outer coil 1, the space between the outer coil 1 and the inner coil 2 is a hot water chamber 3, and the internal space of the inner coil 2 is a fluid chamber 4. A heat exchange device includes a spiral heat exchange tube, wherein the center position of the heat exchange tube is sleeved on the outside of the heat flow pipe of the heat exchange device.

[0023] The heated circulating water is introduced into the hot water cavity 3 through the heat exchange device to heat the inner coil 2, and then heat the fluid in the fluid cavity 4. The outer wall surface of the inner coil 2 is coated with hot water, and the hot water can continuously heat the inner coil 2. The fluid in the fluid cavity 4 can be continuously heated, ensuring that the fluid in the fluid cavity 4 is heated evenly. The spiral coil design is adopted to improve the heat exchange efficiency.

[0024] The fluid in the fluid cavity 4 is a fluid that is easy to solidify at a low temperature, such as petroleum. This heat exchange method can also prevent the temperature from being too low, causing the fluid to solidify and wax, resulting in pipeline blockage.

[0025] The water flow rate in the hot water chamber 3 is greater than the liquid flow rate in the fluid chamber 4 , which can ensure that the fluid can be heated by the hot water all the time when traveling in the inner coil 2 .

[0026] The heat exchange tubes are provided with a plurality of groups, and the plurality of groups of heat exchange tubes are arranged in parallel. A plurality of groups of spiral heat exchange tubes can be arranged in parallel as required, thereby being able to heat a large amount of fluid at the same time, further improving the heat exchange efficiency.

[0027] The outer coil 1 is nested with multiple inner coils 2. The outer coil 1 wraps the multiple inner coils 2, so that the fluid can be heated more evenly. Different fluids are filled in each inner coil 2, so multiple different fluids can be heated at the same time.

[0028] The embodiments of the utility model disclosed above are only used to help explain the utility model. The embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.

Claims

1. A spiral heat exchange tube, characterized in that: The invention comprises an outer coil (1) and an inner coil (2), wherein the inner coil (2) is nested in the outer coil (1), the space between the outer coil (1) and the inner coil (2) is a hot water chamber (3), and the inner space of the inner coil (2) is a fluid chamber (4).

2. The spiral heat exchange tube according to claim 1, characterized in that: The water flow rate in the hot water chamber (3) is greater than the liquid flow rate in the fluid chamber (4).

3. The spiral heat exchange tube according to claim 1, characterized in that: The heat exchange tubes are provided in multiple groups, and the multiple groups of heat exchange tubes are arranged in parallel.

4. The spiral heat exchange tube according to claim 1, characterized in that: A plurality of inner layer coils (2) are nested inside the outer layer coil (1).

5. A heat exchange device, characterized in that: The invention comprises the spiral heat exchange tube as described in any one of claims 1 to 4.

6. A heat exchange device according to claim 5, characterized in that: The center position of the heat exchange tube is sleeved on the outside of the heat flow pipeline of the heat exchange device.

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