A corrosion-resistant structure for industrial facilities in high-salt and alkaline environments

Abstract

This utility model discloses an anti-corrosion structure for industrial facilities in high-salt and alkaline environments, including pipes, a support structure, and flange connectors. The support structure is fixedly installed on the foundation of the industrial facility via a fixed base. The pipe is installed at an angle through the support structure, so that the axial direction of the pipe forms an angle with the horizontal plane. The flange connectors are located at the pipe connection points, and the installation position of the flange connectors is higher than the main body of the pipe. This utility model achieves gravity self-drainage by combining the inclined installation of the pipe with the high-position arrangement of the flange, completely eliminating water accumulation; the annular gap of the flange collects liquid and is equipped with inclined drainage holes, enabling the active discharge of liquid accumulated in the gaps and breaking corrosion traps; the adjustable bracket locks the tilt angle and is linked with the water collector of the guide channel, achieving zero settlement error during installation and closed liquid management; ultimately, the drying rate of the support structure is improved, the maintenance frequency is reduced, the design life is extended, and excellent anti-corrosion effect is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of steel quality testing equipment, and more specifically, to an anti-corrosion structure for industrial facilities in high-salt and alkaline environments. Background Technology

[0002] In coastal saline-alkali areas (such as the Bohai Bay coast of Tianjin), industrial facilities are exposed to extreme corrosive environments for extended periods. The soil salinity in these areas exceeds national standards by more than eight times, and atmospheric salt spray deposition exceeds international standard CX level by 1.5 times, resulting in a corrosion rate of up to 0.8 mm / year for metal components. Traditional anti-corrosion structures fail rapidly due to water retention and crevice corrosion. Current technologies often employ horizontal installation for pipe supports, with tightly pressed flange connections. Condensate and salt spray accumulate in flange gaps, welds, and the bottom of pipes, forming electrochemical corrosion micro-cells that trigger pitting corrosion, stress corrosion cracking, and other damage. Although high-performance coatings are used, structural defects cause premature coating failure, resulting in a maintenance frequency of 3.2 times / year. Utility Model Content

[0003] In view of the above-mentioned problems in the existing technology, the purpose of this utility model is to provide an anti-corrosion structure for industrial facilities in high salinity and alkalinity environments, including a pipe, a support structure and a flange connector. The support structure is fixedly installed on the foundation of the industrial facility through a fixed base at its bottom. The pipe is installed at an angle through the support structure, so that the axial direction of the pipe forms an angle with the horizontal plane. The flange connector is set at the connection of the pipe, and the installation position of the flange connector is higher than the main body of the pipe.

[0004] As a preferred embodiment, the flange connector includes an upper flange and a lower flange, with an annular gap formed between the sealing surfaces of the upper flange and the lower flange. The annular gap is continuous along the circumference of the flange, and its inner boundary is isolated from the inner cavity of the pipe, while its outer boundary extends to the outer edge of the flange. A drain hole is provided in the annular gap, which penetrates the thickness direction of the flange connector and is connected to the external environment.

[0005] As a preferred embodiment, the inlet of the drain hole is located at the lowest point of the annular gap, and the outlet extends downwards to the side of the support structure, with the axial direction of the drain hole consistent with the inclination direction of the pipe.

[0006] As a preferred embodiment, the support structure includes a support body and a fixed base. The support body and the fixed base are hinged together by an adjustable connector. The top of the support body is provided with an arc-shaped groove, the pipe is nested in the arc-shaped groove, and a flow guide groove is formed at the bottom of the arc-shaped groove.

[0007] As a preferred embodiment, the adjustable connector includes a slide rail base plate, a slider, and a locking bolt. The slide rail base plate is fixed on a fixed base, the bottom of the slider is nested and slides with the slide rail base plate, and the top is hinged to the bracket body. The locking bolt passes through and is threadedly connected to the slider.

[0008] As a preferred embodiment, the end of the guide channel is connected to a water collector, which is fixedly installed on a fixed base. The water collector includes a collection chamber and a discharge pipe.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention achieves gravity-driven drainage by installing pipes at an angle and arranging flanges at a high position, completely eliminating water accumulation. Liquid is collected through the flange's annular gap and a tilted drainage hole is provided to actively drain liquid from the gaps, breaking up corrosion traps. Adjustable brackets lock the tilt angle in conjunction with the guide channel's water collector, achieving zero settlement error during installation and closed-loop liquid management. Ultimately, the dryness rate of the support structure is improved, maintenance frequency is reduced, and design life is extended, resulting in excellent corrosion protection. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the mating structure of the pipe and flange connection parts of this utility model; Figure 2 This is a schematic diagram of the specific structure of the support structure of this utility model. Detailed Implementation

[0011] The present invention will be further described below with reference to specific embodiments.

[0012] A corrosion-resistant structure for industrial facilities in high-salt and alkaline environments includes a pipe 1, a support structure 2, and a flange connector 3. The support structure 2 is fixedly installed on the foundation of the industrial facility via a fixed base 22 at its bottom. The pipe 1 is installed at an angle via the support structure 2, such that the axial direction of the pipe 1 forms an angle with the horizontal plane. The flange connector 3 is located at the connection of the pipe 1, and the installation position of the flange connector 3 is higher than the main body of the pipe 1.

[0013] The fixed base 22 can be anchored to the concrete foundation with anchor bolts. Since the pipe 1 is installed at an angle through the support structure 2, the dripping water will be discharged through the flange connection 3, which avoids the accumulation of salt water and condensate in the flange gaps, thus preventing corrosion and effectively extending the service life.

[0014] In a preferred embodiment, the flange connector 3 includes an upper flange 31 and a lower flange 32. An annular gap 33 is formed between the sealing surfaces of the upper flange 31 and the lower flange 32. The annular gap 33 is continuously penetrating along the circumference of the flange, and its inner boundary is isolated from the inner cavity of the pipe 1. Its outer boundary extends to the outer edge of the flange. A drain hole 34 is provided in the annular gap 33. The drain hole 34 penetrates through the thickness direction of the flange connector 3 and is connected to the external environment.

[0015] In a preferred embodiment, the inlet of the drain hole 34 is located at the lowest point of the annular gap 33, and the outlet extends downwards to the side of the support structure 2. The axial direction of the drain hole 34 is consistent with the inclination direction of the pipe 1.

[0016] Salt water or condensate will flow out through the drain hole 34 at the lowest point of the annular gap 33, which can effectively eliminate water accumulation at the four corners and reduce corrosion of the flange gap. The downward tilt of the drain hole 34 can accelerate the water flow and avoid blockage.

[0017] As a preferred embodiment, the support structure 2 includes a support body 21 and a fixed base 22. The support body 21 and the fixed base 22 are hinged by an adjustable connector 23. The top of the support body 21 is provided with an arc-shaped groove 24, the pipe 1 is nested in the arc-shaped groove 24, and the bottom of the arc-shaped groove 24 is provided with a guide groove 25.

[0018] The adjustable connector 23 includes a slide rail base plate 231, a slider 232, and a locking bolt 233. The slide rail base plate 231 is fixed on the fixed base 22. The bottom of the slider 232 is nested and slides with the slide rail base plate 231, and the top is hinged to the bracket body 21. The locking bolt 233 passes through and is threaded to the slider 232.

[0019] The guide channel 25 can effectively avoid water corrosion problems. Liquid can be discharged through the guide channel 25. At the same time, the inclination angle of the pipe can be adjusted by the adjustable connector 23, so as to adapt to different site conditions.

[0020] In a preferred embodiment, the end of the guide channel 25 is connected to the water collector 4, which is fixedly installed on the fixed base 22. The water collector 4 includes a collection chamber 41 and a discharge pipe 42.

[0021] The water discharged from the guide channel 25 will enter the collection chamber 41 of the water collector 4, and finally be discharged in a centralized manner through the discharge pipe 42.

[0022] The overall operation procedure for this device is as follows: Step 1: Fix the support structure 1. Anchor the fixed base 22 to the concrete foundation; 2. Calibrate the levelness error of the base.

[0023] Step 2: Adjust the pipe inclination angle 1. Rotate the locking bolt 233 counterclockwise outward to release the slider 232; 2. Push the slider 232 along the slide rail base plate 231 to adjust the bracket body; 3. Rotate the locking bolt 233 clockwise inward, so that the bottom of the locking bolt 233 engages with the slide rail base plate 231 to fix the slider 232.

[0024] Step 3: Install pipes 1. Place pipe 1 into arc-shaped bracket 24; 2. Secure the pipe with U-shaped clamps; 3. Ensure that the outlet of the guide channel 25 faces outward.

[0025] Step 4: Assemble the flange 1. Install the upper flange 31 and the lower flange 32 at the end of the pipe; 2. Align them to form an annular gap 33; 3. Adjust the flanges so that the drain hole 34 is at the lowest point and tilted downwards; 4. Tighten the flange bolts diagonally.

[0026] Step 5: Connect the drainage system 1. Connect the outlet of the guide channel 25 to the collection chamber 41 of the water collector 4; 2. Extend the discharge pipe 42 to the drainage ditch.

[0027] Step 7: Routine Maintenance 1. Monthly: Check if drain hole 34 is blocked; 2. Quarterly: Measure the pipe tilt angle; 3. Annually: Open water collector 4 to clean the deposited salt crystals.

[0028] This invention achieves gravity-driven drainage by installing pipes at an angle and arranging flanges at a high position, completely eliminating water accumulation. Liquid is collected through the flange's annular gap and a tilted drainage hole is provided to actively drain liquid from the gaps, breaking up corrosion traps. Adjustable brackets lock the tilt angle in conjunction with the guide channel's water collector, achieving zero settlement error during installation and closed-loop liquid management. Ultimately, the dryness rate of the support structure is improved, maintenance frequency is reduced, and design life is extended, resulting in excellent corrosion protection.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art, and their specifications and models can be selected according to actual conditions.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical embodiments described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A corrosion-resistant structure for industrial facilities in high-salt and alkaline environments, comprising a pipe (1), a support structure (2), and flange connections (3), characterized in that: The support structure (2) is fixedly installed on the foundation of the industrial facility by the fixed base (22) at its bottom. The pipe (1) is installed at an angle by the support structure (2), so that the axial direction of the pipe (1) forms an angle with the horizontal plane. The flange connector (3) is set at the connection of the pipe (1), and the installation position of the flange connector (3) is higher than the main body of the pipe (1).

2. The anti-corrosion structure for industrial facilities in high-salt and alkaline environments according to claim 1, characterized in that, The flange connector (3) includes an upper flange (31) and a lower flange (32). An annular gap (33) is formed between the sealing surfaces of the upper flange (31) and the lower flange (32). The annular gap (33) is continuously connected along the circumference of the flange, and its inner boundary is isolated from the inner cavity of the pipe (1). Its outer boundary extends to the outer edge of the flange. A drain hole (34) is provided in the annular gap (33). The drain hole (34) penetrates the thickness direction of the flange connector (3) and is connected to the external environment.

3. The anti-corrosion structure for industrial facilities in high-salt and alkaline environments according to claim 2, characterized in that, The inlet of the drain hole (34) is located at the lowest point of the annular gap (33), and the outlet extends downward to the side of the support structure (2). The axial direction of the drain hole (34) is consistent with the inclination direction of the pipe (1).

4. The anti-corrosion structure for industrial facilities in high-salt and alkaline environments according to claim 1, characterized in that, The support structure (2) includes a support body (21) and a fixed base (22). The support body (21) and the fixed base (22) are hinged by an adjustable connector (23). The top of the support body (21) is provided with an arc-shaped groove (24). The pipe (1) is nested in the arc-shaped groove (24). The bottom of the arc-shaped groove (24) is provided with a guide groove (25).

5. The anti-corrosion structure for industrial facilities in high-salt and alkaline environments according to claim 4, characterized in that, The adjustable connector (23) includes a slide rail base plate (231), a slider (232) and a locking bolt (233). The slide rail base plate (231) is fixed on the fixed base (22). The bottom of the slider (232) is nested and slides with the slide rail base plate (231), and the top is hinged to the bracket body (21). The locking bolt (233) passes through and is threaded to the slider (232).

6. The anti-corrosion structure for industrial facilities in high-salt and alkaline environments according to claim 4, characterized in that, The end of the guide channel (25) is connected to the water collector (4), which is fixedly installed on the fixed base (22). The water collector (4) includes a collection chamber (41) and a discharge pipe (42).

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