Heat insulation support ring structure for preventing corrosion under heat insulation layer and vertical equipment for refining and chemical industry

Abstract

The utility model provides a heat preservation layer lower anticorrosion heat preservation support ring structure and chemical vertical equipment, heat preservation support ring structure includes heat preservation support ring body, heat preservation support ring body is by a ring edge board and a plurality of fixed support spare, a plurality of fixed support spare surrounds ring edge board setting and interval fixed on ring edge board downside, and the inner end of fixed support spare sets up for with the gap between ring edge board inner ring and chemical vertical equipment body when fixing with chemical vertical equipment body. Chemical vertical equipment includes chemical vertical equipment body and a plurality of above-mentioned heat preservation support ring body, and a plurality of heat preservation support ring body is interval set up on chemical vertical equipment body from below to above for supporting heat preservation layer, and the annular gap for the moisture outflow of heat preservation layer is left between the ring edge board on heat preservation support ring body and chemical vertical equipment body. The utility model can solve the problem of heat preservation layer lower corrosion caused by water accumulation on heat preservation support ring upper portion.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation engineering technology for petroleum refining and chemical equipment, specifically to a thermal insulation support ring structure for corrosion protection under the insulation layer and a vertical refining and chemical equipment. Background Technology

[0002] In refining and chemical plants, equipment and pipelines are typically insulated to ensure suitable medium temperatures and conserve energy. To support this insulation, insulation support rings are usually fixed to the outer walls of towers and vertical equipment, dividing them into different zones. As the plants age, the insulation structures inevitably break down, allowing moisture to seep in and accumulate above the support rings. This leads to significant corrosion beneath the insulation layer in these areas, sometimes resulting in perforation and leaks, severely impacting the safe and stable operation of the plant. Furthermore, companies have observed corrosion beneath the insulation layers of both the equipment and the insulation structure, particularly in coastal refining and chemical plants.

[0003] To investigate the corrosion issue between the aforementioned equipment and the insulation layer, the company's maintenance personnel conducted a thorough inspection to identify potential corrosion hazards. During the inspection, they discovered this after removing the external insulation structure of the vertical refining equipment. Figure 2 As shown, the multi-layer insulation support ring and its upper area are severely corroded. Locally, corrosion perforation occurred during the cleaning of corrosion products. Technicians analyzed that the main reason is that the company is located in a coastal atmospheric corrosion environment, significantly affected by the surrounding relative humidity and coastal salt spray. When the insulation structure is damaged, moisture easily enters below the insulation layer and accumulates in the upper area of ​​the insulation support ring, ultimately leading to corrosion beneath the insulation layer. Severe corrosion can cause leaks and unplanned shutdowns, posing a significant threat to the company's safe production.

[0004] To address the aforementioned problem of corrosion under the insulation layer, patent 202223050431.8 discloses a structure for eliminating corrosion under the pipeline insulation layer. This structure primarily uses an anti-corrosion and heat-insulating coating to replace the traditional insulation structure, providing both insulation and corrosion protection, thereby solving the corrosion problem. Patent CN202321577855.1 discloses a corrosion monitoring instrument for under the insulation layer, which analyzes electrical signals to determine the corrosion status of the insulation layer on the pipe or container wall, achieving online monitoring of corrosion under the insulation layer. While both of these technical solutions can address the problem of corrosion under the insulation layer to some extent, neither solution addresses the issue from the perspective of optimizing the equipment structural design to control corrosion under the insulation layer. Utility Model Content

[0005] The present invention aims to provide a structure for a heat insulation support ring for corrosion prevention under the heat insulation layer and a vertical refining and chemical equipment, which can solve the problem of corrosion under the heat insulation layer caused by water accumulation on the upper part of the heat insulation support ring.

[0006] To solve the above technical problems, the specific solution adopted by this utility model is a thermal insulation support ring structure for corrosion protection under the thermal insulation layer, including a thermal insulation support ring body. The thermal insulation support ring body is composed of an annular edge plate and multiple fixed support members. The multiple fixed support members are arranged around the annular edge plate and fixed at intervals on the lower side of the annular edge plate. The inner end of the fixed support member extends beyond the inner ring of the annular edge plate to leave a gap between the inner ring of the annular edge plate and the body of the vertical refining equipment when it is fixed to the body of the refining equipment.

[0007] As another optimized solution for the above-mentioned insulation support ring structure for corrosion protection under the insulation layer: the fixed support is a T-shaped angle steel, which consists of a vertical steel plate and a horizontal steel plate for fixing the annular edge plate.

[0008] As another optimized solution for the above-mentioned insulation support ring structure for corrosion protection under the insulation layer, the number of fixed support members is 4 to 12.

[0009] As another optimized solution for the above-mentioned insulation support ring structure for corrosion protection under the insulation layer: the width of the annular edge plate is 50-150mm.

[0010] As another optimized solution for the above-mentioned insulation support ring structure for corrosion protection under the insulation layer: the outer ring of the annular edge plate is set to be inclined at 1 to 10° toward its center.

[0011] A vertical refining equipment for corrosion protection under an insulation layer includes a vertical refining equipment body and multiple insulation support ring bodies. The multiple insulation support ring bodies are spaced apart from bottom to top on the vertical refining equipment body to support the insulation layer. An annular gap is left between the annular edge plate on the insulation support ring body and the vertical refining equipment body to allow water under the insulation layer to flow out.

[0012] As another optimized solution for corrosion protection of vertical refining equipment under the above-mentioned insulation layer: the fixed support is vertically fixed to the outer wall of the vertical refining equipment body, and the side of the vertical steel plate and the horizontal steel plate connected to the outer wall of the vertical refining equipment body is arc-shaped.

[0013] As another optimized solution for corrosion protection of vertical refining equipment under the above-mentioned insulation layer: the width of the annular gap is 5-15mm.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, the insulation support ring body is set on the body of the vertical refining equipment. The annular edge plate is located on the outer periphery of the vertical refining equipment body through multiple fixed support members that are fixed circumferentially to the outer wall of the vertical refining equipment body. An annular gap is left between the annular edge plate and the outer wall of the vertical refining equipment body. The annular gap allows water under the insulation layer to flow out. Compared with the prior art, the annular edge plate can support the insulation layer while avoiding the problem of water accumulating on the upper part of the annular edge plate and causing corrosion under the insulation layer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a photograph of the corrosion on the upper part of the multi-layered support ring.

[0018] Reference numerals in the attached drawings: 1. Main body of the vertical refining equipment; 2. Main body of the insulation support ring; 201. Annular edge plate; 202. Fixed support component; 2021. Horizontal steel plate; 2022. Vertical steel plate; 3. Annular gap. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts of this utility model that are not described in detail in the following embodiments, such as the material of the annular edge plate and the fixed support and the structure and specifications of the refining vertical equipment body, should be understood as prior art known or should be known by those skilled in the art.

[0020] like Figure 1 As shown, a thermal insulation support ring structure for corrosion protection under a thermal insulation layer and a vertical refining and chemical equipment include a vertical refining and chemical equipment body 1 and two thermal insulation support ring bodies 2. The two thermal insulation support ring bodies 2 are evenly spaced from bottom to top along the axial direction of the vertical refining and chemical equipment body 1. The number of thermal insulation support ring bodies 2 can be adjusted according to the different heights of the vertical refining and chemical equipment body 1.

[0021] Each heat-insulating support ring body 2 includes an annular edge plate 201 and four fixed support members 202. The four fixed support members 202 are evenly spaced along the circumference of the outer wall of the vertical refining equipment body 1. The four fixed support members 202 are respectively welded and fixed to the outer wall of the vertical refining equipment body 1 at the corresponding position.

[0022] The fixed support 202 is vertically fixed to the outer wall of the vertical refining equipment body 1. The fixed support 202 has a T-shaped cross-section and is composed of horizontal steel plates 2021 distributed in the horizontal direction and vertical steel plates 2022 distributed in the vertical direction. The vertical steel plates 2022 and the horizontal steel plates 2021 have the same length. The upper side of the vertical steel plate 2022 is fixed to the middle of the lower side of the horizontal steel plate 2021, and the width side of the vertical steel plate 2022 is aligned with the width side of the horizontal steel plate 2021. In addition, the vertical steel plate 2022 and the horizontal steel plate 2021 are integrally formed.

[0023] The vertical steel plate 2022 and the horizontal steel plate 2021 are fixedly connected to the body 1 of the vertical refining equipment. The wide sides of the vertical steel plate 2022 and the horizontal steel plate 2021 are arc-shaped and can be adapted to the curvature of the outer wall of the body 1. The wide arc-shaped sides of the vertical steel plate 2022 and the horizontal steel plate 2021 are welded and fixed to the outer wall of the body 1. The arc shape of the wide sides of the vertical steel plate 2022 and the horizontal steel plate 2021 can increase the stability of the fixed support 201 welded and fixed to the outer wall of the body 1.

[0024] The annular edge plate 201 is fitted around the outer periphery of the vertical refining equipment body 1. The lower side of the annular edge plate 201 is welded and fixed to the middle of the upper surface of the corresponding horizontal steel plate 2021. An annular gap 3 is left between the inner ring of the annular edge plate 201 and the outer wall of the vertical refining equipment body 1. The width of the annular gap 3 is about 10mm. The width of the annular gap 3 can be adjusted according to the actual outer diameter of the vertical refining equipment body 1 so that the moisture below the insulation layer can flow out through the annular gap 3, avoiding the problem of moisture accumulating on the upper part of the annular edge plate 201 and causing corrosion below the insulation layer.

[0025] The length of the annular edge plate 201 is greater than the outer diameter of the body 1 of the vertical refining equipment. The width of the annular edge plate 201 is 100mm. The outer ring of the annular edge plate 201 is inclined at 10° to the outside. This setting does not affect the normal support of the insulation layer. At the same time, the upper surface of the annular edge plate 201 forms a slope that facilitates the flow of water from the annular gap 3, avoiding water accumulation and corrosion of the equipment under the insulation layer.

Claims

1. A thermal insulation support ring structure for corrosion protection under a thermal insulation layer, characterized in that: The device includes a thermal insulation support ring body (2), which consists of an annular edge plate (201) and multiple fixed support members (202). The multiple fixed support members (202) are arranged around the annular edge plate (201) and fixed at intervals on the lower side of the annular edge plate (201). The inner end of the fixed support member (202) extends beyond the inner ring of the annular edge plate (201) and is set to leave a gap between the inner ring of the annular edge plate (201) and the refining vertical equipment body (1) when it is fixed to the refining vertical equipment body (1).

2. The thermal insulation support ring structure for corrosion protection under the thermal insulation layer according to claim 1, characterized in that: The fixed support (202) is a T-shaped angle steel, which consists of a vertical steel plate (2022) and a horizontal steel plate (2021) for fixing the annular edge plate (201).

3. The thermal insulation support ring structure for corrosion protection under the thermal insulation layer according to claim 1, characterized in that: The number of fixed support members (202) is 4 to 12.

4. The thermal insulation support ring structure for corrosion protection under the thermal insulation layer according to claim 1, characterized in that: The width of the annular edge plate (201) is 50-150 mm.

5. The thermal insulation support ring structure for corrosion protection under the thermal insulation layer according to claim 1, characterized in that: The outer ring of the annular edge plate (201) is inclined at 1 to 10° toward its center.

6. A vertical refining and chemical equipment with corrosion protection under an insulation layer, characterized in that: The equipment includes a vertical refining equipment body (1) and multiple insulation support ring bodies (2) as described in any one of claims 1-5. The multiple insulation support ring bodies (2) are spaced apart from bottom to top on the vertical refining equipment body (1) to support the insulation layer. An annular gap (3) is left between the annular edge plate (201) on the insulation support ring body (2) and the vertical refining equipment body (1) for water under the insulation layer to flow out.

7. A vertical refining and chemical equipment for corrosion protection under an insulation layer according to claim 6, characterized in that: The fixed support (202) is vertically fixed to the outer wall of the refining vertical equipment body (1). The side of the vertical steel plate (2022) and the horizontal steel plate (2021) connected to the outer wall of the refining vertical equipment body (1) are both arc-shaped.

8. A vertical refining and chemical equipment for corrosion protection under an insulation layer according to claim 6, characterized in that: The width of the annular gap (3) is 5 to 15 mm.

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