Corrosion-resistant stainless steel seamless steel pipe for petrochemical industry

Abstract

The utility model discloses a corrosion-resistant stainless steel seamless steel tube for petrochemical engineering, which relates to the technical field of steel tubes and comprises a seamless steel tube body, a fixed flange is fixedly mounted at one end of the steel tube body, a limiting groove is formed in the fixed flange, and a fixed cylinder is slidably connected in the limiting groove. A partition plate is fixedly installed on the inner wall of the fixing cylinder, a containing groove is formed in the fixing cylinder, a fluorescent layer is sprayed to the inner wall of the containing groove, and through cooperation of the partition plate, the fixing cylinder and the fluorescent layer, when leakage occurs at the connecting position, a medium can flow into the containing groove through a through groove; the fluorescent layers in the containing grooves can become wet after making contact with media, when the fluorescent layers are wet, the colors can be changed, distinct contrast can be formed, the fluorescent layers can be separated through the effect of the partition plates, the function that workers can conveniently find the joints of the seamless steel pipe body is achieved, and the leakage position can be located in time.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipes, in particular to a corrosion-resistant stainless steel seamless pipe for petrochemical industry. Background Art

[0002] Petrochemical industry belongs to a kind of industrial field, which mainly includes the refining and processing of petroleum raw materials. It can make more convenient use and processing of petroleum and other raw materials. It is mainly used in agriculture, light industry and energy and can be used in multiple fields.

[0003] In the process of chemical processing and transportation, etc., it is necessary to use pipelines to transport various media. Seamless steel pipes are one of the pipeline materials, mainly composed of stainless steel and other materials. During production, multiple coatings are sprayed on the outside of the stainless steel seamless pipes, which have the ability of anti-aging and anti-corrosion. When connecting stainless steel seamless pipes, multiple sets of fixed flanges and other components are used to connect and seal the joints. Since seamless steel pipes are affected by vibrations and internal pressure shocks during use, they are more likely to leak at the fixed flange connections during use. When a small part leaks, it is not easy to be discovered in time, especially for colorless and transparent media, which can easily cause greater dangers. In order to solve this technical problem, the utility model proposes a corrosion-resistant stainless steel seamless pipe for petrochemical industry. Utility Model Content

[0004] The main purpose of the utility model is to provide a corrosion-resistant stainless steel seamless pipe for petrochemical industry, which can effectively solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A corrosion-resistant stainless steel seamless pipe for petrochemical industry comprises a seamless steel pipe body, a fixing flange is fixedly installed at one end of the steel pipe body, a limiting groove is provided inside the fixing flange, a fixing cylinder is slidably connected inside the limiting groove, a positioning hole is provided inside the fixing cylinder, a through groove is provided inside the fixing cylinder, a partition is fixedly installed on the inner wall of the fixing cylinder, a placement groove is provided inside the fixing cylinder, a fluorescent layer is sprayed on the inner wall of the placement groove, and a transparent tempered plate is fixedly installed on the inner wall of the fixing cylinder.

[0007] Preferably, a fixing bolt assembly is slidably connected inside the fixing flange, and an outer surface of the fixing bolt assembly is slidably connected to the inside of the positioning hole.

[0008] Preferably, the through grooves and partitions are provided in a plurality of groups inside the fixed cylinder and arranged in a circular array, and the through grooves are symmetrically arranged inside the fixed cylinder.

[0009] Preferably, the fixing tubes are provided in two groups and are arranged symmetrically, and the two groups of fixing tubes can be spliced ​​into an annular structure.

[0010] Preferably, the outside of the seamless steel pipe body is coated with an epoxy resin layer, the opening of the through groove is connected to the inner side of the fixing tube, and the placement groove is located between two adjacent groups of partitions.

[0011] Preferably, reinforcement rings are fixedly installed on both sides of the fixing tube, and sealing rings are installed on both sides of the fixing tube. The sealing rings are located at the positions of the reinforcement rings and are in contact with the inner walls of the limiting grooves.

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

[0013] In the utility model, the partition, the fixing tube and the fluorescent layer cooperate with each other. When in use, the fixing tube is installed in the middle position of the two groups of fixing flanges for fixing, and can form a sealed whole with the fixing flanges. When leakage occurs at the connection, the medium will flow into the inside of the placement groove through the through groove. The fluorescent layer inside the placement groove can become moist after contacting the medium. When the fluorescent layer is moistened, it will change color and form a sharp contrast. The leakage position can be quickly detected and located through specific color light, which can assist staff to quickly find the leakage point. The fluorescent layer can be separated by the action of the partition. The user can judge the approximate range of the leakage point by observing the reaction of the fluorescent layer at different positions, which can provide advance preparation for maintenance, realize the function of facilitating the staff to find the connection of the seamless steel pipe body, and is conducive to timely locating the leakage point.

[0014] In the utility model, components such as an epoxy resin layer and a sealing ring are provided. The epoxy resin layer can enhance the corrosion resistance of the seamless steel pipe body, improve its service life, and ensure stability during use. The sealing ring can control the connection position of the fixing tube to the fixing flange to form a secondary seal, which can assist in the stable sealing of the leakage point when the staff is looking for the leakage point. By providing components such as a transparent tempered plate, the transparent tempered plate can, on the one hand, separate the fluorescent layer from the outside for protection, and on the other hand, the observation plate made of transparent material can more easily display the situation after the fluorescent layer changes color, which is convenient for the staff to find and locate in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a corrosion-resistant stainless steel seamless pipe for petrochemical industry according to the utility model;

[0016] Figure 2 This is a schematic diagram of a fixed flange component of a corrosion-resistant stainless steel seamless steel pipe for petrochemical industry according to the utility model;

[0017] Figure 3This is a schematic diagram of a fixed barrel component of a corrosion-resistant stainless steel seamless steel pipe for petrochemical industry according to the utility model;

[0018] Figure 4 This is a schematic diagram of the interior of a fixed cylinder of a corrosion-resistant stainless steel seamless steel pipe for petrochemical industry according to the utility model;

[0019] Figure 5 The utility model is a front view of the interior of a fixed cylinder of a corrosion-resistant stainless steel seamless pipe for petrochemical industry.

[0020] In the figure: 1. Seamless steel pipe body; 2. Fixing flange; 3. Limiting groove; 4. Fixing cylinder; 5. Positioning hole; 6. Through groove; 7. Partition; 8. Placement groove; 9. Fluorescent layer; 10. Transparent tempered plate; 11. Fixing bolt assembly; 12. Epoxy resin layer; 13. Reinforcement ring; 14. Sealing ring. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-5 As shown, a corrosion-resistant stainless steel seamless pipe for petrochemical industry includes a seamless steel pipe body 1. The outside of the seamless steel pipe body 1 is coated with an epoxy resin layer 12. The epoxy resin layer 12 has good corrosion resistance, can enhance the corrosion resistance of the seamless steel pipe body 1, and improve the stability of the seamless steel pipe body 1 when used in petrochemical industry.

[0023] A fixing flange 2 is fixedly installed at one end of the steel pipe body, and a limiting groove 3 is provided inside the fixing flange 2. A fixing cylinder 4 is slidably connected inside the limiting groove 3. The fixing cylinder 4 between two groups of fixing flanges 2 can be quickly positioned and installed through the limiting groove 3. Two groups of fixing cylinders 4 are provided and arranged symmetrically. The two groups of fixing cylinders 4 can be spliced ​​into an annular structure. After the upper and lower groups of fixing cylinders 4 are installed, an annular structure can be formed and wrapped inside the limiting groove 3.

[0024] A positioning hole 5 is opened inside the fixing tube 4, and a fixing bolt assembly 11 is slidably connected inside the fixing flange 2. The fixing bolt assembly 11 includes components such as a fixing screw and a fixing nut. The outer surface of the fixing bolt assembly 11 is slidably connected to the inside of the positioning hole 5. The fixing tube 4 and the fixing flange 2 can be connected and fixed through multiple groups of fixing bolt assemblies 11.

[0025] A through groove 6 is provided inside the fixed tube 4, and the opening of the through groove 6 is connected to the inner side of the fixed tube 4. A partition 7 is fixedly installed on the inner wall of the fixed tube 4. Multiple groups of through grooves 6 and partitions 7 are provided inside the fixed tube 4 and arranged in a circular array. The through grooves 6 are symmetrically arranged inside the fixed tube 4. A placement groove 8 is provided inside the fixed tube 4, and the placement groove 8 is located between two adjacent groups of partitions 7. When leakage occurs at the connection, the medium will flow into the placement groove 8 through the through groove 6. The fluorescent layer 9 can be separated by the action of the partition 7, and the user can judge the approximate range of the leakage point by observing the reaction of the fluorescent layer 9 at different positions.

[0026] The inner wall of the placement groove 8 is sprayed with a fluorescent layer 9. The fluorescent layer 9 inside the placement groove 8 can become wet after contacting the medium. When the fluorescent layer 9 is wet, it will change color to form a sharp contrast. The leakage position can be quickly detected and located through specific color light, which can assist the staff to quickly find the leakage point.

[0027] A transparent tempered plate 10 is fixedly installed on the inner wall of the fixed tube 4. The transparent tempered plate 10 is made of transparent glass. On the one hand, the transparent tempered plate 10 can separate the fluorescent layer 9 from the outside for protection. On the other hand, the observation plate made of transparent material can more easily display the situation after the fluorescent layer 9 changes color, which is convenient for the staff to find and locate in time.

[0028] Reinforcement rings 13 are fixedly installed on both sides of the fixed cylinder 4, and sealing rings 14 are installed on both sides of the fixed cylinder 4. The sealing rings 14 are located at the position of the reinforcement rings 13 and contact with the inner wall of the limiting groove 3. The sealing rings 14 can control the connection position of the fixed cylinder 4 to the fixed flange 2 to form a secondary seal, which can assist in the stable sealing of the leakage point when the staff is looking for the leakage point. When a small-scale leakage occurs at the connection of the fixed flange 2, the fixed cylinder 4 can be sealed under the action of the sealing ring 14.

[0029] During use, the fixing tube 4 is installed inside the limiting groove 3 by means of the fixing bolt assembly 11. When leakage occurs inside the fixing flange 2, the medium will flow into the placement groove 8 through the through groove 6. The fluorescent layer 9 inside the placement groove 8 will become moistened after contacting the medium. When the fluorescent layer 9 is moistened, it will change color, which can assist the staff to quickly detect and locate the leakage point. The staff can locate the leakage point by means of the cooperation of the transparent tempered plate 10 and the partition 7.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A corrosion-resistant stainless steel seamless pipe for petrochemical industry, comprising a seamless steel pipe body (1), characterized in that: A fixing flange (2) is fixedly installed at one end of the steel pipe body, a limiting groove (3) is provided inside the fixing flange (2), a fixing tube (4) is slidably connected inside the limiting groove (3), a positioning hole (5) is provided inside the fixing tube (4), a through groove (6) is provided inside the fixing tube (4), a partition (7) is fixedly installed on the inner wall of the fixing tube (4), a placement groove (8) is provided inside the fixing tube (4), a fluorescent layer (9) is sprayed on the inner wall of the placement groove (8), and a transparent tempered plate (10) is fixedly installed on the inner wall of the fixing tube (4).

2. The corrosion-resistant stainless steel seamless pipe for petrochemical industry according to claim 1, characterized in that: A fixing bolt assembly (11) is slidably connected inside the fixing flange (2), and an outer surface of the fixing bolt assembly (11) is slidably connected to the inside of the positioning hole (5).

3. The corrosion-resistant stainless steel seamless pipe for petrochemical industry according to claim 1, characterized in that: The through grooves (6) and the partitions (7) are provided in multiple groups inside the fixed cylinder (4) and arranged in a circular array, and the through grooves (6) are symmetrically arranged inside the fixed cylinder (4).

4. The corrosion-resistant stainless steel seamless pipe for petrochemical industry according to claim 1, characterized in that: The fixing tubes (4) are provided in two groups and are arranged symmetrically, and the two groups of fixing tubes (4) can be spliced ​​into an annular structure.

5. The corrosion-resistant stainless steel seamless pipe for petrochemical industry according to claim 1, characterized in that: The outside of the seamless steel pipe body (1) is coated with an epoxy resin layer (12), the opening of the through groove (6) is connected to the inner side of the fixing tube (4), and the placement groove (8) is located between two adjacent groups of partitions (7).

6. The corrosion-resistant stainless steel seamless pipe for petrochemical industry according to claim 1, characterized in that: Reinforcement rings (13) are fixedly mounted on both sides of the fixed cylinder (4), and sealing rings (14) are mounted on both sides of the fixed cylinder (4); the sealing rings (14) are located at the positions of the reinforcement rings (13) and are in contact with the inner wall of the limiting groove (3).

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