Internal spiral plug-in structure of efficient heat exchange pipeline of electromagnetic heater

Abstract

The utility model discloses an internal spiral plug-in structure of an efficient heat exchange pipeline of an electromagnetic heater, which comprises a spiral flow stirring plug-in arranged in a double-layer heat exchange pipe, the double-layer heat exchange pipe is an annular spiral sleeve type heat exchange pipeline, the spiral flow stirring plug-in is concentrically arranged in the double-layer heat exchange pipe, and the spiral flow stirring plug-in is arranged in the double-layer heat exchange pipe. The spiral flow stirring inserting piece is arranged in the double-layer heat exchange pipe, the spiral flow stirring inserting piece can damage a laminar flow boundary layer of the inner wall of the double-layer heat exchange pipe, disturbance of fluid in the double-layer heat exchange pipe is increased, the fluid achieves sufficient turbulent flow, heat exchange between the fluid and the double-layer heat exchange pipe is promoted, and the heat exchange effect is improved; the flow speed of fluid in the double-layer heat exchange tube is increased through the spiral flow stirring plug-in, scale removal and scale prevention can be conducted on the inner wall of the double-layer heat exchange tube, and follow-up cleaning is not needed.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic heater heat exchange pipe accessories, and in particular relates to an inner spiral plug-in structure of a high-efficiency heat exchange pipeline of an electromagnetic heater. Background Art

[0002] The working principle of electromagnetic heater is based on Faraday's law of electromagnetic induction, that is, a changing magnetic field will generate an induced electromotive force in a closed circuit. Due to the change of the magnetic field, an induced current will be generated in the induction conductor. When this induced current passes through the conductor, it will generate Joule heat and heat up the conductor. Compared with resistive heaters, electromagnetic heaters have faster heating rates, clean heating characteristics, direct access to high voltage electricity, non-contact heating capabilities, precise temperature control capabilities, good material adaptability, etc.

[0003] The existing electromagnetic heater heat exchange pipe is affected by the shape and capacity of the heat exchange pipe. The heat exchange pipe usually adopts a straight or spiral structure. When the fluid passes through the heat exchange pipe directly, the fluid cannot fully exchange heat with the heat exchange pipe, resulting in poor heat exchange effect. After long-term use, the inner wall of the heat exchange pipe is prone to scaling and is difficult to clean. For this reason, we propose an inner spiral plug-in structure for an electromagnetic heater high-efficiency heat exchange pipe. Utility Model Content

[0004] The utility model aims to provide an inner spiral plug-in structure of an electromagnetic heater high-efficiency heat exchange pipeline to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an internal spiral plug-in structure of an electromagnetic heater high-efficiency heat exchange pipe, comprising a spiral stirring flow plug-in arranged in a double-layer heat exchange pipe, the double-layer heat exchange pipe is an annular spiral sleeve type heat exchange pipe, and the spiral stirring flow plug-in is concentrically arranged inside the double-layer heat exchange pipe.

[0006] Preferably, the spiral outer side of the spiral stirring plug is in contact with the inner side wall of the double-layer heat exchange tube.

[0007] Preferably, the helical angle of the spiral flow-stirring insert is the same as the helical angle of the double-layer heat exchange tube.

[0008] Preferably, the spiral flow-stirring plug-in is a double helical blade structure with staggered spiral windings.

[0009] Preferably, the helical angle of the double helical blade structure is 17-25°.

[0010] Preferably, the double-layer heat exchange tube is a high-efficiency heat exchange tube.

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

[0012] 1. The utility model sets a spiral stirring flow plug-in in the double-layer heat exchange tube, which will destroy the inner wall laminar boundary layer of the double-layer heat exchange tube, increase the disturbance of the fluid in the double-layer heat exchange tube, make the fluid reach sufficient turbulence, promote the heat exchange between the fluid and the double-layer heat exchange tube, and improve the heat exchange effect;

[0013] 2. A spiral flow-stirring plug-in is arranged in the double-layer heat exchange tube, which accelerates the flow rate of the fluid in the double-layer heat exchange tube, thereby cleaning and preventing scale on the inner wall of the double-layer heat exchange tube, without the need for subsequent cleaning;

[0014] 3. Double-layer heat exchange tubes are high-efficiency heat exchange tubes. High-efficiency heat exchange tubes can prevent and clean scale independently and compensate for temperature stress by themselves. While saving resources, they reduce manufacturing costs, the risk of damage caused by temperature stress, and the difficulty of maintenance and cleaning caused by dirt after being put into use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the spiral stirring plug-in of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the double-layer heat exchange tube of the utility model;

[0018] Figure 4 This is the temperature simulation diagram of the traditional straight heat exchange pipe with the plug-in;

[0019] Figure 5 This is a temperature simulation diagram of the high-efficiency heat exchange pipeline of the utility model with an inner spiral insert.

[0020] In the figure: 1. Double-layer heat exchange tube; 2. Spiral stirring plug-in. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 3The inner spiral plug-in structure of the electromagnetic heater high-efficiency heat exchange pipe provided by the utility model includes a spiral stirring flow plug-in 2 arranged in a double-layer heat exchange tube 1, the double-layer heat exchange tube 1 is an annular spiral sleeve type heat exchange pipe, the spiral stirring flow plug-in 2 is concentrically arranged inside the double-layer heat exchange tube 1, the spiral outer side of the spiral stirring flow plug-in 2 is in contact with the inner wall of the double-layer heat exchange tube 1, and the spiral angle of the spiral stirring flow plug-in 2 is the same as the spiral angle of the double-layer heat exchange tube 1.

[0023] The utility model provides a spiral flow-stirring plug-in 2 in the double-layer heat exchange tube 1, which destroys the inner wall laminar boundary layer of the double-layer heat exchange tube 1, increases the disturbance of the fluid in the double-layer heat exchange tube 1, makes the fluid reach sufficient turbulence, promotes the heat exchange between the fluid and the double-layer heat exchange tube 1, and improves the heat exchange effect;

[0024] like Figure 4 This is the temperature simulation diagram of the traditional straight heat exchange pipe with the plug-in. Figure 5 It is a temperature simulation diagram of the high-efficiency heat exchange pipeline of the utility model with the inner spiral insert;

[0025] Depend on Figure 4 and Figure 5 It can be seen that under the same working conditions, the temperature data of the traditional straight heat exchange pipe with the plug-in and the temperature data of the high-efficiency heat exchange pipe with the inner spiral plug-in of the utility model are shown in the following table:

[0026]

[0027] As can be seen from the above table, the outlet temperature of the traditional straight heat exchange pipe with the plug-in increased by 217.21°C, while the temperature of the high-efficiency heat exchange pipe of the utility model with the inner spiral plug-in only increased by 205.74°C; this confirms from the side that the high-efficiency heat exchange pipe of the utility model with the inner spiral plug-in will have more heat taken away by the fluid, that is, it has a better heat exchange effect;

[0028] A spiral flow-stirring plug 2 is arranged in the double-layer heat exchange tube 1, and the spiral flow-stirring plug 2 accelerates the flow rate of the fluid in the double-layer heat exchange tube 1, thereby cleaning and preventing scale on the inner wall of the double-layer heat exchange tube 1 without subsequent cleaning.

[0029] In this embodiment, Figure 1-Figure 3 As shown, the spiral stirring plug 2 is a double helical blade structure of staggered spiral winding, and the spiral angle of the double helical blade structure is 17-25°;

[0030] By designing the helical angle of the double helical blade structure, the flow rate of the fluid can be controlled, thereby being suitable for different types of heat exchange pipes.

[0031] In this embodiment, Figure 1-Figure 3As shown, the double-layer heat exchange tube 1 is a high-efficiency heat exchange tube, which can prevent and clean scale autonomously and compensate for temperature stress by itself, saving resources while reducing manufacturing costs, the risk of damage caused by temperature stress, and the difficulty of maintenance and cleaning caused by dirt after being put into use.

[0032] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inner spiral plug-in structure for an electromagnetic heater high-efficiency heat exchange pipeline, characterized in that: It comprises a spiral agitation insert (2) arranged in a double-layer heat exchange tube (1); the double-layer heat exchange tube (1) is an annular spiral sleeve type heat exchange pipe; the spiral agitation insert (2) is concentrically arranged inside the double-layer heat exchange tube (1).

2. The inner spiral plug-in structure of the electromagnetic heater high-efficiency heat exchange pipeline according to claim 1 is characterized in that: The spiral outer side of the spiral agitation insert (2) is in contact with the inner side wall of the double-layer heat exchange tube (1).

3. The inner spiral plug-in structure of the electromagnetic heater high-efficiency heat exchange pipeline according to claim 1 is characterized in that: The helical angle of the helical flow stirring insert (2) is the same as the helical angle of the double-layer heat exchange tube (1).

4. The inner spiral plug structure of the electromagnetic heater high-efficiency heat exchange pipeline according to claim 1 is characterized by: The spiral flow stirring plug-in (2) is a double spiral blade structure with staggered spiral windings.

5. The inner spiral plug structure of the electromagnetic heater high-efficiency heat exchange pipeline according to claim 4 is characterized in that: The helical angle of the double helical blade structure is 17-25°.

6. The inner spiral plug structure of the electromagnetic heater high-efficiency heat exchange pipeline according to claim 1 is characterized by: The double-layer heat exchange tube (1) is a high-efficiency heat exchange tube.

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