Heating pipe with good corrosion resistance and acid resistance

Abstract

The utility model discloses a heating tube with good corrosion resistance and acid resistance, which belongs to the technical field of heating tubes, and comprises a control structure, a mounting structure and a heating structure, the heating structure comprises an electric heating tube and a standby tube which are arranged in parallel, the electric heating tube and the standby tube are both made of 2205 duplex stainless steel materials, and the control structure is connected with the mounting structure. Each electric heating tube and each standby tube are U-shaped, the mounting structure comprises tube plate flanges arranged at U-shaped openings of the electric heating tubes and the standby tubes, and insulating tube protecting sleeves are arranged on the portions, exceeding the tube plate flanges, of the electric heating tubes and the standby tubes. The control structure comprises a junction box connected with the end parts of the electric heating tube and the standby tube, the junction box is provided with a power supply inlet, a control inlet, a grounding device and a temperature measuring sensor, and the temperature measuring sensor is electrically connected with a temperature measuring tube arranged at the center of the electric heating tube and the standby tube. The electric heating tube and the standby tube which are made of 2205 stainless steel are adopted, so that the heating tube is suitable for corrosive or acidic environments, the service life of the heating tube is prolonged remarkably, and the reliability of the heating tube is improved remarkably.

Description

TECHNICAL FIELD

[0001] The utility model belongs to curtain wall aluminium plate installation technical field, concretely relates to a kind of heating pipe with good corrosion resistance and acid resistance. BACKGROUND

[0002] In chemical, pharmaceutical and other industries, heating pipe is often in corrosive or acidic environment, which puts high requirements on the material of heating pipe. Traditional heating pipe is mostly made of 304 stainless steel or ordinary carbon steel. These materials are prone to corrosion when facing strong acid, strong base or chlorine ion-containing medium, which shortens the service life of heating pipe and even causes safety accidents such as leakage. SUMMARY

[0003] To solve the above-mentioned problems, the utility model discloses a kind of heating pipe with good corrosion resistance and acid resistance, which is made of 2205 stainless steel material electric heating tube and standby tube, suitable for corrosive or acidic environment in chemical, pharmaceutical and other industries, significantly improves the service life and reliability of heating pipe.

[0004] To achieve the above purpose, the specific technical scheme of the present application is as follows:

[0005] A kind of heating pipe with good corrosion resistance and acid resistance, including control structure, installation structure and heating structure, the heating structure includes parallelly arranged electric heating tube and standby tube, the electric heating tube and the standby tube are all made of 2205 duplex stainless steel material, single electric heating tube and standby tube are all U-shaped, the installation structure includes the pipe plate flange provided at the U-shaped opening of the electric heating tube and standby tube, the part of the electric heating tube and standby tube beyond pipe plate flange is provided with insulating pipe sleeve;The control structure includes the terminal box connected with the end of electric heating tube and standby tube, the terminal box is provided with power inlet, control inlet, grounding device and temperature sensor, the temperature sensor is electrically connected to the temperature measuring tube arranged at the center of electric heating tube and standby tube.

[0006] Based on the above technical features, further, the sealing ring made of polytetrafluoroethylene is arranged at the connection between electric heating tube and standby tube and pipe disc flange.

[0007] Based on the above technical features, preferably, the electric heating tube is provided with not less than 3 groups of flow guide plates perpendicular to the electric heating tube in the direction away from the terminal box and beyond the pipe plate flange.

[0008] Based on the above technical features, preferably, the length ratio of temperature measuring tube to electric heating tube is 3 / 4-13 / 14, which ensures that the temperature sensor can accurately measure the working temperature of electric heating tube.

[0009] Based on the above technical features, preferably, the pipe diameter of electric heating tube and standby tube is 12mm.

[0010] Based on the above technical features, preferably, the tube plate flange is provided with a lifting ring screw.

[0011] Based on the above technical features, preferably, the junction box is made of carbon steel material, and the tube plate flange is made of SS304 or 2205 duplex stainless steel material.

[0012] Compared with the prior art, the application has the following beneficial effects:

[0013] The heating pipe made of 2205 duplex stainless steel material has excellent corrosion resistance and acid resistance, and is suitable for corrosive or acidic environment in chemical industry, pharmaceutical industry and the like, thereby significantly improving the service life and reliability of the heating pipe.

[0014] When the electric heating pipe fails or needs to be maintained, the standby pipe can be switched to continue running, thereby ensuring the continuity of the heating process and the stability of the production.

[0015] The setting of the insulating pipe sleeve improves the safety, effectively prevents the corrosion and leakage of the electric heating pipe and the standby pipe connected outside the tube plate flange, and enhances the durability of the heating pipe. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the heating pipe with good corrosion resistance and acid resistance.

[0017] LIST OF FIGURES:

[0018] 1, electric heating pipe; 2, standby pipe; 3, temperature measuring pipe; 4, flow guide plate; 5, tube plate flange; 6, sealing ring; 7, lifting ring screw; 8, insulating pipe sleeve; 9, junction box; 10, grounding device; 11, temperature measuring sensor; 12, power inlet; 13, control inlet. DETAILED DESCRIPTION

[0019] The application will be further illustrated below in combination with the drawings and specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the application and not to limit the scope of the application.

[0020] It should be noted that the words "upper", "lower", "left", "right", "front" and "back" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] As shown in Figure 1 A heating pipe with good corrosion resistance and acid resistance, comprising a control structure, a mounting structure and a heating structure. The heating structure comprises parallelly arranged electric heating pipes 1 and standby pipes 2, both of which are made of 2205 duplex stainless steel, and each of the electric heating pipes and the standby pipes is in the shape of U.

[0022] The mounting structure comprises a pipe plate flange 5 arranged at the U-shaped opening of the electric heating pipes and the standby pipes, and further, a sealing ring 6 made of polytetrafluoroethylene is arranged at the connection between the electric heating pipes and the standby pipes and the pipe plate flange.

[0023] The part of the electric heating pipes and the standby pipes beyond the pipe plate flange is provided with an insulating pipe sleeve 8; the control structure comprises a junction box 9 connected to the end of the electric heating pipes and the standby pipes, the junction box 9 is provided with a power inlet 12, a control inlet 13, a grounding device 10 and a temperature measuring sensor 11, and the temperature measuring sensor 11 is electrically connected to a temperature measuring pipe 3 arranged at the center of the electric heating pipes and the standby pipes.

[0024] Preferably, the length ratio of the temperature measuring pipe to the electric heating pipe is 3 / 4-13 / 14, which ensures that the temperature measuring sensor can accurately measure the working temperature of the electric heating pipe.

[0025] Preferably, the electric heating pipe 1 is parallelly provided with not less than 3 groups of flow guide plates 4 perpendicular to the electric heating pipe in the direction away from the junction box and beyond the pipe plate flange.

[0026] Preferably, the pipe diameter of the electric heating pipe 1 and the standby pipe 2 is 12 mm, which ensures the mechanical strength of the heating pipe.

[0027] Based on the above technical features, preferably, the pipe plate flange 5 is provided with a lifting ring screw 7.

[0028] Based on the above technical features, preferably, the junction box 9 is made of carbon steel, and the pipe plate flange 6 is made of SS304 or 2205 duplex stainless steel.

[0029] In conclusion, the application has simple structure, good corrosion resistance and acid resistance, and significantly improves the service life and reliability of the heating pipe.

[0030] It should be noted that the drawings only illustrate the technical idea of the application, and cannot limit the protection scope of the application by the shape. For ordinary skilled in the art, some improvements and refinements can be made without departing from the principles of the application, and these improvements and refinements fall within the protection scope of the claims of the application.

Claims

1. A corrosion and acid resistant heating tube, characterized by: The application relates to a heating device, which comprises a control structure, a mounting structure and a heating structure, wherein the heating structure comprises parallelly arranged electric heating pipes and standby pipes, the electric heating pipes and the standby pipes are made of 2205 duplex stainless steel, each of the electric heating pipes and the standby pipes is in a U shape, the mounting structure comprises pipe plate flanges arranged at U-shaped openings of the electric heating pipes and the standby pipes, and the portions of the electric heating pipes and the standby pipes exceeding the pipe plate flanges are provided with insulating pipe sleeve covers; the control structure comprises a terminal box connected with the end portions of the electric heating pipes and the standby pipes, the terminal box is provided with a power inlet, a control inlet, a grounding device and a temperature measuring sensor, and the temperature measuring sensor is electrically connected with a temperature measuring pipe arranged at the center of the electric heating pipes and the standby pipes.

2. The corrosion and acid resistant heating tube according to claim 1, characterized in that: The connection portions of the electric heating pipes and the standby pipes and the pipe plate flanges are provided with sealing rings made of polytetrafluoroethylene.

3. The corrosion and acid resistant heating tube according to claim 1, characterized in that: The electric heating pipes are provided with not less than three groups of flow guide plates which are perpendicular to the electric heating pipes in the direction away from the terminal box and exceeding the pipe plate flanges.

4. The corrosion and acid resistant heating tube according to claim 1, characterized in that: The length ratio of the temperature measuring pipe to the electric heating pipe is 3 / 4-13 / 14.

5. The corrosion and acid resistant heating tube according to claim 1, characterized in that: The pipe diameter of the electric heating pipes and the standby pipes is 12 mm.

6. The corrosion and acid resistant heating tube according to claim 1, characterized in that: The pipe plate flanges are provided with lifting ring screws.

7. The corrosion and acid resistant heating tube of claim 1, wherein: The terminal box is made of carbon steel, and the pipe plate flanges are made of SS304 or 2205 duplex stainless steel.

Images