Graphene quick heating pipe structure

Abstract

The utility model belongs to the technical field of heating tubes, and particularly discloses a graphene quick heating tube structure which comprises a quartz tube, and a graphene layer is sprayed on the inner wall of the quartz tube. Elastic connectors are arranged at the two ends of the quartz tube respectively, metal wires are arranged at the tail ends of the elastic connectors, and the metal wires are electrically connected with the graphene layer in a conducting mode; the two ends of the quartz tube are subjected to thermoplastic compression to form duckbilled structures, and the metal wire penetrates through the duckbilled structures and is fixedly connected with the duckbilled structures. The inner wall coating with the small pipe diameter is adopted for heating, heat resistance is reduced, heat exchange efficiency and infrared conversion efficiency are improved, heat loss of the quick heating pipe in the heating process is reduced, and the utilization rate of electric energy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating pipes, and particularly relates to a graphene rapid heating pipe structure. Background Art

[0002] A heating tube is a heating device that uses infrared heating and is widely used in food processing, heating industry, automobile industry and other industries. In the shell of a traditional heating tube, an inert gas is encapsulated as a heat transfer medium, and a resistance wire is arranged in the heating tube. The resistance wire heats up when it is energized, which plays a heating role. For example, a Chinese patent with publication number CN201758463U discloses a bracketless carbon fiber braided quartz heating tube, in which the heating element is a carbon fiber braided body, which can be designed into various shapes suitable for industrial applications. However, there are many heat exchange links between the carbon fiber heating tube and the object to be heated, including at least a carbon fiber heating element, a heat-conducting medium and a quartz tube, which increases the thermal resistance and reduces the utilization rate of electric energy. Utility Model Content

[0003] The utility model aims to overcome the defect of low electric energy utilization rate of carbon fiber heating pipes in the prior art and provide a graphene fast heating pipe structure.

[0004] The utility model provides a graphene quick-heating pipe structure, comprising a quartz tube, the inner wall of which is sprayed with a heating layer, wherein the heating layer is a graphene layer;

[0005] The two ends of the quartz tube are respectively provided with elastic connectors, and the ends of the elastic connectors are provided with metal wires, and the metal wires are electrically connected to the graphene layer;

[0006] The two ends of the quartz tube are thermoplastically pressed into a duckbill structure, and the metal wire passes through the duckbill structure and is fixedly connected to the duckbill structure.

[0007] A further solution is that the elastic connector includes a connecting rod, one end of which is evenly provided with a plurality of elastic contact sheets along the circumference, the elastic contact sheets are made of metal, have an interference fit with the graphene layer and are electrically connected;

[0008] The metal wire is arranged inside the connecting rod, one end of the metal wire is connected to the elastic contact piece, and the other end of the metal wire extends to the outside of the connecting rod.

[0009] A further solution is that a support column is provided at one end of the connecting rod close to the elastic contact piece, and a plurality of springs are radially provided on the support column, and the number and position of the springs are adapted to the elastic contact piece so that one end of each spring is connected to the support column and the other end of the spring is connected to the elastic contact piece.

[0010] A further solution is that each of the elastic contact pieces is an arc-shaped strip structure, and under the action of the spring, a plurality of the elastic contact pieces form a claw-shaped structure.

[0011] A further solution is that two molybdenum sheets are arranged inside the duckbill structure, and the metal wire is fixed between the two molybdenum sheets.

[0012] A further solution is that the quartz tube is provided with air holes.

[0013] A further solution is that the metal wire is a tungsten wire.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the heating layer of the utility model adopts a graphene layer, and uses a small-diameter inner wall coating to generate heat, thereby reducing thermal resistance, improving heat exchange efficiency and infrared conversion efficiency, extending the working life in the high-temperature domain, reducing heat loss of the quick-heat pipe during the heating process, and improving the utilization rate of electrical energy.

[0015] The utility model adopts an elastic contactor to conduct the metal wire and the graphene layer. Since the elastic contact piece of the elastic contactor is an elastic arc strip structure, whether the rapid heating pipe is powered on or off, the elastic contact piece can be ensured to be in close contact with the graphene layer, and damage to the graphene layer can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are only used to illustrate and explain the present invention, and are not intended to limit the scope of the present invention, wherein:

[0017] Figure 1 : Schematic diagram of the structure of the utility model;

[0018] Figure 2 : Schematic diagram of the installation position of the elastic connector;

[0019] Figure 3 : Schematic diagram of elastic connector structure;

[0020] Figure 4 : Schematic diagram of the molybdenum sheet setting position;

[0021] In the figure: 1. quartz tube; 2. duckbill structure; 3. pores; 4. metal wire; 5. graphene layer; 6. connecting rod; 7. support column; 8. elastic contact piece; 9. spring; 10. elastic connector; 11. molybdenum sheet. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution, design method and advantages of the utility model clearer, the utility model is further described in detail through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] like Figure 1 As shown, the utility model provides a graphene quick-heating pipe structure, including a quartz tube 1, and a heating layer is sprayed on the inner wall of the quartz tube 1. In order to improve the heat exchange efficiency and infrared conversion efficiency, the present embodiment adopts a graphene layer 5 as the heating layer; elastic connectors 10 are respectively provided at both ends of the quartz tube 1, and metal wires 4 are provided at the ends of the elastic connectors 10, and the metal wires 4 are electrically connected to the graphene layer 5; the metal wires 4 are connected to the heating circuit as the positive lead and the negative lead of the quick-heating pipe. In order to facilitate installation, the two ends of the quartz tube 1 are thermoplastically pressed into a duckbill structure 2, and the metal wires 4 penetrate the duckbill structure 2 and are fixedly connected to the duckbill structure 2. An air hole 3 is opened on the quartz tube 1 to prevent the quartz tube 1 from breaking during the thermoplastic pressing process of the duckbill structure 2. It should be noted that after the duckbill structure 2 is formed, argon or other protective gas needs to be filled into the quartz tube through the air hole 3, and then the air hole 3 is sealed by high-temperature melting technology. Figure 4 As shown, two molybdenum sheets 11 are arranged inside the duckbill structure 2, and the metal wire 4 is fixed between the two molybdenum sheets 11, and the thickness of the molybdenum sheet 11 is 0.1 mm. In this embodiment, the metal wire 4 is a tungsten wire, the outer diameter of the quartz tube 1 is 10 mm, the inner diameter is 8 mm, the length is set to 305 mm, and the thickness of the graphene layer 5 is 30 μm.

[0024] like Figure 2 and Figure 3 As shown, in order to ensure that the metal wire 4 and the graphene layer 5 are electrically conductive regardless of whether the quick heat pipe is powered on or off, in this embodiment, the elastic connector 10 includes a connecting rod 6, one end of which is evenly provided with four elastic contact pieces 8 along the circumferential direction. The elastic contact pieces 8 are made of metal, and are interference-fitted with the graphene layer 5 and electrically conductively connected. Each of the elastic contact pieces 8 is an arc-shaped strip structure, and the four elastic contact pieces 8 form a claw structure. The metal wire 4 is arranged inside the connecting rod 6, and one end of the metal wire 4 is connected to the elastic contact piece 8, and the other end of the metal wire 4 extends to the outside of the connecting rod 6. In order to prevent the elastic contact piece 8 from deforming, a support column 7 is also provided at one end of the connecting rod 6 close to the elastic contact piece 8, and the support column 7 is provided with four springs 9 along the radial direction. The number and position of the springs 9 are adapted to the elastic contact piece 8, so that one end of each spring 9 is connected to the support column 7, and the other end of the spring 9 is connected to the elastic contact piece 8.

[0025] In this embodiment, a number of comparisons are made among the traditional carbon crystal heater, the carbon fiber heater and the graphene heater of the present application. In terms of electric infrared conversion rate, product life, high temperature stability and thermal conductivity, graphene has an absolute advantage. Therefore, the use of a graphene heat pipe structure can reduce thermal resistance, improve heat exchange efficiency and infrared conversion efficiency, extend the working life in the high temperature domain, reduce heat loss of the heat pipe during the heating process, and improve the utilization rate of electrical energy.

[0026] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A graphene heat pipe structure, comprising a quartz tube (1), characterized in that: The inner wall of the quartz tube (1) is sprayed with a heating layer, and the heating layer is a graphene layer (5); The two ends of the quartz tube (1) are respectively provided with elastic connectors (10), and the ends of the elastic connectors (10) are provided with metal wires (4), and the metal wires (4) are electrically connected to the graphene layer (5); Both ends of the quartz tube (1) are duckbill structures (2), and the metal wire (4) passes through the duckbill structure (2) and is fixedly connected to the duckbill structure (2).

2. A graphene heat pipe structure according to claim 1, characterized in that: The elastic connector (10) comprises a connecting rod (6), one end of the connecting rod (6) being evenly provided with a plurality of elastic contact sheets (8) along the circumferential direction, the elastic contact sheets (8) being made of metal and being in contact with the graphene layer (5); The metal wire (4) is arranged inside the connecting rod (6), one end of the metal wire (4) is connected to the elastic contact piece (8), and the other end of the metal wire (4) extends to the outside of the connecting rod (6).

3. A graphene heat pipe structure according to claim 2, characterized in that: A support column (7) is arranged at one end of the connecting rod (6) close to the elastic contact piece (8), and a plurality of springs (9) are arranged around the support column (7). The number and position of the springs (9) are adapted to the elastic contact piece (8), so that one end of each of the springs (9) is connected to the outer wall of the support column (7), and the other end of each of the springs (9) is connected to the elastic contact piece (8).

4. A graphene heat pipe structure according to claim 3, characterized in that: Each of the elastic contact pieces (8) is a flexible strip-shaped structure, and under the action of the spring (9), the elastic contact piece (8) forms a claw-shaped structure.

5. The graphene heat pipe structure according to claim 1, characterized in that: Two molybdenum sheets (11) are arranged inside the duckbill structure (2), and the metal wire (4) is fixed between the two molybdenum sheets (11).

6. The graphene heat pipe structure according to claim 1, characterized in that: The quartz tube (1) is provided with air holes (3).

7. The graphene heat pipe structure according to claim 1, characterized in that: The metal wire (4) is a tungsten wire.

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