High-pressure-resistant pipeline heater with built-in telescopic electric heating pipe
By using a combination of linear heating pipes and corrugated pipes in the pipeline heater, the problem of difficulty in stabilizing operation of traditional heaters in high voltage and pressure-bearing environments is solved, especially the deformation of the heating pipe connection caused by thermal expansion and contraction, achieving efficient and reliable heating effects.
Patent Information
- Application Number
- CN202421633367.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-11
AI Technical Summary
Traditional pipeline heaters are difficult to operate stably under high voltage and pressure-bearing environments, especially the problem of stress deformation at the heating pipe connections due to thermal expansion and contraction.
A high-voltage resistant pipeline heater with built-in retractable electric heating pipe is designed, and a linear heating pipe is combined with a corrugated pipe. The corrugated pipe is nested at the connection between the heating pipe and the fixed flange, and the dimensional changes caused by thermal expansion and contraction are absorbed through the elastic deformation of the corrugated pipe.
It realizes stable operation at high pressure of 10kV, solves the deformation problem of heating pipe connection caused by thermal expansion and contraction, and improves heating efficiency, system reliability and service life.
Smart Images
Figure CN222916224U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating equipment, and particularly relates to a high-pressure resistant pipeline heater with an internally retractable electric heating tube suitable for the scenario of direct power supply under high-pressure environment. Background Art
[0002] In industrial production and special fields, pipeline heaters often need to operate under high voltage and pressure-bearing environments. Traditional pipeline heaters mostly use U-shaped heating tubes and are designed for 380V power supply. However, due to the high-voltage resistance requirement, the U-shaped heating tubes are difficult to withstand high-voltage operation. Although linear heaters can work under high voltage, they cannot effectively solve the problem of the force deformation at the connection of the heating tubes caused by thermal expansion and contraction.
[0003] Therefore, it is particularly important to design a pipeline heater that can directly withstand 10kV high-voltage power supply and effectively solve the problem of thermal expansion and contraction. Summary of the Utility Model
[0004] The purpose of the utility model is to overcome the above-mentioned problems and provide a high-pressure resistant pipeline heater with an internally retractable electric heating tube.
[0005] The technical solution adopted by the utility model to achieve the above purpose is as follows:
[0006] A high-pressure resistant pipeline heater with an internally retractable electric heating tube, including a pipe body. Fixed flanges are installed at both axial ends of the pipe body. An electric heating tube is axially installed inside the pipe body. The wiring ends at both ends of the electric heating tube are respectively inserted into the corresponding fixed flanges on both sides and are located outside the pipe body. A corrugated pipe is nested at the connection between the electric heating tube inside the pipe body and the fixed flange.
[0007] The electric heating tube is nested with corrugated pipes at both sides of the fixed flanges. One end of the corrugated pipe is located inside the electric heating tube, and the other end extends out of the fixed flange and is connected to the outer end face of the fixed flange.
[0008] One end of the corrugated pipe is located inside the electric heating tube and is welded to the electric heating tube, and the other end of the corrugated pipe extends out of the fixed flange and is welded to the outer end face of the fixed flange.
[0009] The electric heating tube is linear.
[0010] The wiring end of the electric heating tube is connected to a high-voltage power supply.
[0011] A high-pressure resistant pipeline heater with a built-in retractable electric heating tube, comprising a tube body. Fixed flanges are installed at both axial ends of the tube body. A heating tube is axially installed inside the tube body. The wiring terminals at both ends of the heating tube are respectively inserted into the corresponding fixed flanges on both sides and are located outside the tube body. A corrugated pipe structure is machined on the body of the heating tube inside the tube body, and the heating tube and the corrugated pipe are of an integral structure.
[0012] The outer end faces of the heating tube and the fixed flanges at both ends are sealed by welding.
[0013] The heating tube is linear.
[0014] The wiring terminal of the heating tube is connected to a high-voltage power supply.
[0015] The features of the present utility model are as follows: (1) Direct high-voltage power supply connection of 10 kV: The heating tube can be directly powered by 10 kV high voltage, improving the heating efficiency and scope of application; (2) Solving the problems of high-pressure resistance and thermal expansion and contraction: The linear heating tube combined with the corrugated pipe design not only meets the high-pressure resistance requirements but also effectively solves the problems brought by thermal expansion and contraction, ensuring the stability and safety of the connection of the heating tube; (3) Long service life and reliability: The elastic deformation characteristics of the corrugated pipe extend the service life of the heating tube, improving the reliability and maintenance convenience of the entire heating system. Description of the Drawings
[0016] Figure 1 It is a schematic structural diagram of the first embodiment of the present utility model.
[0017] Figure 2 is Figure 1 The partial enlarged view of...
[0018] Figure 3 It is a schematic structural diagram of the heating tube of the first embodiment of the present utility model.
[0019] Figure 4 It is a schematic structural diagram of the corrugated pipe of the first embodiment of the present utility model.
[0020] Figure 5 It is a schematic structural diagram of the second embodiment of the present utility model.
[0021] Figure 6 is Figure 5 The partial enlarged view of...
[0022] Among them: 1. Tube body; 2. Fixed flange; 3. Heating tube; 31. Wiring terminal; 4. Corrugated pipe; 5. High-voltage power supply. Detailed Description of the Invention
[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present invention.
[0024] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present invention or its application or use.
[0025] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be regarded as part of the specification.
[0026] In all examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.
[0027] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings. Embodiment 1
[0028] Referring to Figures 1-4 As shown, the utility model is a high-pressure resistant pipeline heater with a built-in retractable electric heating tube, including a tube body 1. Fixed flanges 2 are installed at both axial ends of the tube body 1. The fixed flanges 2 are made of high-temperature resistant alloy materials. A plurality of heating tubes 3 are axially installed in the tube body 1. The heating tubes 3 are linear and can withstand high voltage operation. The tube shell material of the heating tubes 3 is selected from alloy materials with high temperature resistance and high thermal conductivity, and is filled with high-pressure resistant insulating materials inside to ensure stable operation under 10 kV high voltage. The wiring terminals 31 at both ends of the heating tubes 3 are respectively inserted into the corresponding fixed flanges 2 on the corresponding sides and are located outside the tube body 1. The heating tubes 3 are fixed by the fixed flanges 2 to prevent displacement. Bellows 4 are nested at both sides of the fixed flanges 2 where the heating tubes 3 are located. One end of the bellows 4 is located inside the heating tube 3 and is welded and sealed with the heating tube 3. The other end of the bellows 4 extends out of the fixed flange 3 and is welded and sealed with the outer end face of the fixed flange 3. The bellows 4 are made of high-temperature resistant alloy materials with a wall thickness of 2 mm. The bellows 4 have good elastic deformation ability and high temperature resistance, and can absorb this part of the change through the elastic deformation of the bellows 4 itself when the heating tubes 3 generate dimensional changes due to thermal expansion and contraction, thereby effectively preventing deformation or damage at the connection between the heating tubes 3 and the fixed flanges 2 due to stress concentration. At the same time, the use of the bellows 4 also improves the reliability and service life of the entire heating system. A high-voltage power supply 5 is provided at one end outside the tube body 1. The wiring terminals 31 of the heating tubes 3 are connected to the high-voltage power supply 5 to improve the heating efficiency and application range. Example 2
[0029] Referring to Figure 5 、 6 As shown, on the basis of Example 1, in order to reduce the welding work and at the same time reduce the leakage risk, the heating pipe 3 and the corrugated pipe 4 can be processed into an integral structure. Specifically, the present utility model is a high-pressure resistant pipeline heater with an internally retractable electric heating pipe, including a pipe body 1. Fixed flanges 2 are installed at both axial ends of the pipe body 1. The fixed flanges 2 are made of high-temperature resistant alloy materials. A number of heating pipes 3 are axially installed inside the pipe body 1. The heating pipes 3 are linear and can withstand high-voltage operation. The pipe shell material of the heating pipes 3 is selected from alloy materials with high temperature resistance and high thermal conductivity, and is filled with high-pressure resistant insulating materials inside to ensure stable operation under 10 kV high voltage. The wiring terminals 31 at both ends of the heating pipe 3 are respectively inserted into the corresponding fixed flanges 2 on the corresponding side and are located outside the pipe body 1. The heating pipe 3 is fixed by the fixed flange 2 to prevent displacement. The pipe shell of the heating pipe 3 is processed into a corrugated pipe 4 structure at both sides of the fixed flange 2, so that the heating pipe 3 and the corrugated pipe 4 structure are integrated. The corrugated pipe 4 structure is located inside the pipe body 1. The heating pipe and the outer end faces of the fixed flanges 3 at both ends are both welded and sealed. The corrugated pipe 4 structure has good elastic deformation ability, and can absorb this part of the change through its own elastic deformation when the heating pipe 3 generates dimensional changes due to thermal expansion and contraction, thus effectively preventing the connection between the heating pipe 3 and the fixed flange 2 from deforming or being damaged due to stress concentration. At the same time, the use of the corrugated pipe 4 structure can also improve the reliability and service life of the entire heating system. A high-voltage power supply 5 is provided at one end outside the pipe body 1, and the wiring terminal 31 of the heating pipe 3 is connected to the high-voltage power supply 5 to improve the heating efficiency and application range.
[0030] Through the above Example 1 and Example 2, it can be seen that a high-pressure resistant pipeline heater with an internally retractable electric heating pipe provided by the present utility model has at least achieved the following beneficial effects:
[0031] (1) Direct high-voltage power supply connection of 10 kV: The heating pipe 3 can be directly powered by 10 kV high voltage, which improves the heating efficiency and application range;
[0032] (2) Solve the problems of high-pressure resistance and thermal expansion and contraction: The linear heating pipe 3 combined with the corrugated pipe 4 design not only meets the high-pressure resistance requirements, but also effectively solves the problems brought by thermal expansion and contraction, ensuring the stability and safety of the connection of the heating pipe 3;
[0033] (3) Long service life and reliability: The elastic deformation characteristics of the corrugated pipe 4 extend the service life of the heating pipe 4, improve the reliability of the entire heating system and the convenience of maintenance.
[0034] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.
Claims
1. A high-pressure pipe heater with a built-in retractable electric heating tube, characterized in that: It includes a tube body, both axial ends of the tube body are equipped with fixed flanges, a heating tube is axially installed in the tube body, the connection terminals at both ends of the heating tube are respectively inserted into the fixed flanges on the corresponding sides and are located outside the tube body, the heating tube is located inside the tube body and a corrugated tube is embedded in the connection with the fixed flange.
2. A high-pressure pipe heater with a built-in retractable electric heating tube as claimed in claim 1, characterized in that: The heating tube is provided with a corrugated tube embedded in the fixed flanges on both sides. One end of the corrugated tube is located in the heating tube, and the other end extends out of the fixed flange and is connected to the outer end surface of the fixed flange.
3. A high-pressure resistant pipe heater with a built-in retractable electric heating tube as claimed in claim 2, characterized in that: One end of the bellows is located in the heating tube and welded to the heating tube, and the other end of the bellows extends out of the fixed flange and is welded to the outer end surface of the fixed flange.
4. The high-pressure resistant pipe heater with a built-in retractable electric heating tube as claimed in claim 1, characterized in that: The heating tube is linear.
5. The high-pressure pipe heater with a built-in retractable electric heating tube as claimed in claim 1, characterized in that: The connection terminal of the heating tube is connected to a high voltage power supply.
6. A high-pressure resistant pipe heater with a built-in retractable electric heating tube, characterized in that: It includes a tube body, both axial ends of the tube body are equipped with fixed flanges, a heating tube is axially installed in the tube body, the connection terminals at both ends of the heating tube are respectively inserted into the fixed flanges on the corresponding sides and are located outside the tube body, the main body of the heating tube is located inside the tube body and is processed with a bellows structure, and the heating tube and the bellows are an integrated structure.
7. A high-pressure resistant pipe heater with a built-in retractable electric heating tube as claimed in claim 6, characterized in that: The heating tube and the outer end surfaces of the fixed flanges at both ends are sealed by welding.
8. The high-pressure pipe heater with a built-in retractable electric heating tube as claimed in claim 6, characterized in that: The heating tube is linear.
9. The high-pressure pipe heater with a built-in retractable electric heating tube as claimed in claim 6, characterized in that: The connection terminal of the heating tube is connected to a high voltage power supply.