High-temperature-resistant and negative-pressure-resistant fluorine-lined straight pipe

Abstract

The utility model provides a high-temperature-resistant and negative-pressure-resistant fluorine-lined straight pipe, which relates to the technical field of fluorine-lined straight pipes and comprises a steel lining pipe, a high-temperature-resistant layer is arranged on the inner wall of the steel lining pipe, a fluorine-lined pipe main body is arranged on the inner wall of the high-temperature-resistant layer, and a supporting mechanism is arranged on the inner wall of the fluorine-lined pipe main body. The supporting mechanism comprises two supporting rings, the two supporting rings are both matched with the inner wall of the fluorine lining pipe body, four supporting plates are fixedly installed between the opposite sides of the two supporting rings and make contact with the inner wall of the fluorine lining pipe body, and a mounting frame is fixedly installed on the inner walls of the four supporting plates. The high-temperature-resistant layer is arranged on the outer surface wall of the fluorine-lined pipe main body, so that the high-temperature bearing capacity of the fluorine-lined pipe main body is improved, the supporting mechanism can support the fluorine-lined pipe main body, the probability of deformation of the fluorine-lined pipe main body is reduced, and the negative-pressure-resistant capacity of the fluorine-lined pipe main body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorine-lined straight pipes, in particular to a high temperature-resistant and negative pressure-resistant fluorine-lined straight pipe. Background Art

[0002] Fluorine-lined straight pipes are first made of PTFE powder, which is pushed into a pipe and then forcibly pulled into a seamless steel pipe (the outer diameter of the liner is slightly larger than the inner diameter of the steel pipe by 1-2mm) to form a seamless tight lining. Pipes are mainly used for the transmission of fluid substances. However, when used for high-temperature media and when there is a vacuum in the pipe due to insufficient fluid flow, there are the following problems: if the temperature of the fluid is too high, long-term use will reduce the overall strength of the pipe and soften the entire pipe, and even cause irreversible plastic deformation, so that it must stop for a period of time after working for a period of time, which greatly reduces the efficiency of use. In addition, when the fluid flow in the pipe is insufficient, there is a vacuum in the pipe, which will cause the pipe to be under pressure. The pipe is prone to deformation when working in such an environment for a long time, which greatly reduces the service life of the pipe.

[0003] The existing fluorine-lined straight pipes have poor negative pressure resistance, which can easily cause deformation of the pipes during use. At the same time, when the liquid flow rate inside the pipe is too fast, the impact force of the fluid is also large. Long-term impact on the inner wall of the pipe may reduce the service life of the pipe. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art of poor negative pressure resistance resulting in easy deformation of the pipeline and long-term impact on the inside of the pipeline resulting in reduced service life of the pipeline, and to propose a high temperature and negative pressure resistant fluorine lined straight pipe.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high temperature and negative pressure resistant fluorine-lined straight pipe, including a steel lining pipe, the inner wall of the steel lining pipe is provided with a high temperature resistant layer, the inner wall of the high temperature resistant layer is provided with a fluorine-lined pipe body, and the inner wall of the fluorine-lined pipe body is provided with a supporting mechanism.

[0006] Preferably, the support mechanism comprises two support rings, both of which match the inner wall of the fluorine-lined tube body, and the two support rings are fixedly installed in the inner wall of the fluorine-lined tube body.

[0007] Preferably, four support plates are fixedly installed between opposite sides of the two support rings, and the support plates are in contact with the inner wall of the fluorine-lined tube body.

[0008] Preferably, a mounting frame is fixedly mounted on the inner walls of the four support plates, and a blade is rotatably mounted on the outer wall of the mounting frame.

[0009] Preferably, the outer wall of the steel liner is provided with an explosion-proof layer, and the outer wall of the explosion-proof layer is provided with a protective layer.

[0010] Preferably, flanges are fixedly mounted on both ends of the outer wall of the steel liner, and a group of flange holes are penetrated through the outer walls of the two flanges.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, a high temperature resistant layer is provided on the outer wall of the fluorine-lined tube body, thereby improving the high temperature bearing capacity of the fluorine-lined tube body. At the same time, two support rings and four support plates are provided in the fluorine-lined tube body. The four support plates can be tightly attached to the inner wall of the fluorine-lined tube body, so as to support the fluorine-lined tube body, reduce the probability of deformation of the fluorine-lined tube body, and thus improve the negative pressure resistance of the fluorine-lined tube body. At the same time, rotatable blades are provided in the fluorine-lined tube body. When the flow rate of the fluid in the fluorine-lined tube body is too large, the impact force of the fluid will also increase. The blades will slightly block the fluid and rotate, which can make the flow rate change smoother, thereby reducing the magnitude of the impact force on the inside of the fluorine-lined tube body, thereby reducing the damage of the fluorine-lined tube body due to excessive fluid impact force.

[0013] 2. In the utility model, flanges and flange holes are provided, which facilitate the installation and disassembly of the device. The explosion-proof layer is provided to reduce the probability of bursting of the steel liner. The protective layer is provided to protect the pipeline from physical damage, corrosion and destruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a high temperature resistant and negative pressure resistant fluorine lined straight pipe proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of a high temperature resistant and negative pressure resistant fluorine lined straight pipe proposed by the utility model;

[0016] Figure 3 This is a cross-sectional view of the overall structure of a high temperature resistant and negative pressure resistant fluorine lined straight pipe proposed by the utility model;

[0017] Figure 4 The utility model is a schematic diagram of a support mechanism in a high temperature and negative pressure resistant fluorine lined straight tube.

[0018] Legend: 1. Steel lining; 2. High temperature resistant layer; 3. Fluorine lining pipe body; 4. Explosion-proof layer; 5. Support mechanism; 501. Support ring; 502. Support plate; 503. Mounting frame; 504. Blade; 6. Protective layer; 7. Flange; 8. Flange hole. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a high temperature and negative pressure resistant fluorine-lined straight pipe, including a steel lining pipe 1, the inner wall of the steel lining pipe 1 is provided with a high temperature resistant layer 2, the inner wall of the high temperature resistant layer 2 is provided with a fluorine-lined pipe body 3, and the inner wall of the fluorine-lined pipe body 3 is provided with a supporting mechanism 5.

[0022] The effect achieved by the entire embodiment 1 is that a high temperature resistant layer 2 is provided on the outer wall of the fluorine lined tube body 3 to improve the high temperature bearing capacity of the fluorine lined tube body 3, and the supporting mechanism 5 can support the fluorine lined tube body 3, reducing the probability of deformation of the fluorine lined tube body 3.

[0023] Embodiment 2, as Figure 1-Figure 4 As shown, the support mechanism 5 includes two support rings 501, and the two support rings 501 are matched with the inner wall of the fluorine-lined tube body 3, and the two support rings 501 are fixedly installed in the inner wall of the fluorine-lined tube body 3. Four support plates 502 are fixedly installed between the opposite sides of the two support rings 501, and the support plates 502 are in contact with the inner wall of the fluorine-lined tube body 3. The inner walls of the four support plates 502 are fixedly installed with mounting frames 503, and the outer wall of the mounting frames 503 is rotatably installed with blades 504. The outer wall of the steel liner 1 is provided with an explosion-proof layer 4, and the outer wall of the explosion-proof layer 4 is provided with a protective layer 6. Flanges 7 are fixedly installed at both ends of the outer wall of the steel liner 1, and a group of flange holes 8 are opened through the outer walls of the two flanges 7.

[0024] The effect achieved by the entire embodiment 2 is that two support rings 501 and four support plates 502 are arranged in the fluorine-lined tube body 3. The four support plates 502 can be tightly attached to the inner wall of the fluorine-lined tube body 3, so as to support the fluorine-lined tube body 3, reduce the probability of deformation of the fluorine-lined tube body 3, and thus improve the negative pressure resistance of the fluorine-lined tube body 3. At the same time, rotatable blades 504 are arranged in the fluorine-lined tube body 3. When the flow rate of the fluid in the fluorine-lined tube body 3 is too large, the impact force of the fluid will also increase. The blades 504 will slightly block the fluid and rotate, which can make the flow rate change smoother, thereby reducing the magnitude of the impact force on the inside of the fluorine-lined tube body 3, thereby reducing the damage of the fluorine-lined tube body 3 due to excessive fluid impact force. A flange 7 and a flange hole 8 are provided to facilitate the installation and disassembly of the device.

[0025] Working principle: A high temperature resistant layer 2 is arranged on the outer wall of the fluorine-lined tube body 3, thereby improving the high temperature bearing capacity of the fluorine-lined tube body 3. At the same time, two support rings 501 and four support plates 502 are arranged inside the fluorine-lined tube body 3. The four support plates 502 can be tightly attached to the inner wall of the fluorine-lined tube body 3, so as to support the fluorine-lined tube body 3, reduce the probability of deformation of the fluorine-lined tube body 3, and thus improve the negative pressure resistance of the fluorine-lined tube body 3. At the same time, a rotatable blade 504 is arranged inside the fluorine-lined tube body 3. When the fluorine-lined tube When the flow rate of the fluid in the main body 3 is too high, the impact force of the fluid will also increase. The blades 504 will slightly block the fluid and rotate, which can make the flow rate change more gradual, thereby reducing the impact force on the inside of the fluorine-lined pipe main body 3, thereby reducing the damage to the fluorine-lined pipe main body 3 due to excessive fluid impact force. A flange 7 and a flange hole 8 are provided to facilitate the installation and disassembly of the device. An explosion-proof layer 4 is provided to reduce the probability of bursting of the steel liner 1. The protective layer 6 is provided to protect the pipeline from physical damage, corrosion and destruction.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A high temperature and negative pressure resistant fluorine lined straight pipe, characterized by: It comprises a steel lining pipe (1), the inner wall of the steel lining pipe (1) is provided with a high temperature resistant layer (2), the inner wall of the high temperature resistant layer (2) is provided with a fluorine lined pipe body (3), and the inner wall of the fluorine lined pipe body (3) is provided with a supporting mechanism (5).

2. The high temperature and negative pressure resistant fluorine lined straight pipe according to claim 1, characterized in that: The support mechanism (5) comprises two support rings (501), both of which match the inner wall of the fluorine-lined tube body (3), and the two support rings (501) are fixedly installed in the inner wall of the fluorine-lined tube body (3).

3. The high temperature and negative pressure resistant fluorine lined straight pipe according to claim 2, characterized in that: Four support plates (502) are fixedly installed between opposite sides of the two support rings (501), and the support plates (502) are in contact with the inner wall of the fluorine-lined tube body (3).

4. The high temperature and negative pressure resistant fluorine lined straight pipe according to claim 3, characterized in that: The inner walls of the four support plates (502) are fixedly mounted with mounting frames (503), and the outer walls of the mounting frames (503) are rotatably mounted with blades (504).

5. The high temperature and negative pressure resistant fluorine lined straight pipe according to claim 1, characterized in that: The outer wall of the steel liner (1) is provided with an explosion-proof layer (4), and the outer wall of the explosion-proof layer (4) is provided with a protective layer (6).

6. The high temperature and negative pressure resistant fluorine lined straight pipe according to claim 1, characterized in that: Flanges (7) are fixedly mounted on both ends of the outer wall of the steel liner pipe (1), and a group of flange holes (8) are penetrated through the outer walls of the two flanges (7).

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