Anti-corrosion ground entrance and exit structure
By designing an entrance and exit structure above the ground in the industrial building, combined with internal and external vehicle ramps, rotatable steel covers and anti-corrosion trenches, the problems of liquid outflow and land occupation caused by tank bursting were solved, and the effects of corrosion prevention and slurry recovery were achieved.
Patent Information
- Application Number
- CN202423004221.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-06
AI Technical Summary
In existing industrial buildings, tanks containing alkaline or acidic media are at risk of bursting and liquid leakage in the event of an accident. Traditional entrance and exit designs take up space and are not conducive to corrosion protection.
Design a corrosion-resistant ground entrance and exit structure, including an entrance and exit above the ground, an inner vehicle ramp and an outer vehicle ramp, equipped with a rotatable steel cover and an anti-corrosion trench, steel grates and sealing strips to form a complete enclosure structure to prevent liquid outflow and collect slurry.
It effectively prevents the outflow of burst liquid, reduces floor space, ensures the passage of forklifts, realizes anti-corrosion design, and facilitates the recycling of slurry.
Smart Images
Figure CN223481967U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an entrance / exit structure, and more particularly to a corrosion-resistant ground entrance / exit structure. Background Technology
[0002] In the field of industrial construction, many processes require the participation of alkaline or acidic media. Large industrial tanks store large quantities of liquid slurry with extremely high concentrations of acid or alkali. During production, or in the event of an accidental tank explosion, to prevent the corrosive slurry from spilling or seeping into the soil and causing environmental pollution or personal injury, production sites with large tanks are often enclosed by dikes ranging from 400mm to 1200mm in height (to be calculated and determined). The ground surface is treated with anti-corrosion measures. Examples include red mud sedimentation separation and washing, integrated filtration, leaching projects, and evaporation projects in alumina plants (see appendix for details). Figure 6 As can be seen from the diagram, these anti-corrosion flooring areas are very large, reaching hundreds of meters in length. The processing requires openings in the cofferdams of these floors to allow vehicles or pedestrians to enter and exit. Many factory areas are designed with openings at the cofferdams, such as... Figure 7 As shown, however, the cofferdam has openings, and there are more than one or two openings. This defeats the original purpose of preventing the leakage of liquid from the burst tank, increasing the risk and hazard of leakage. Some plant areas are also designed with ramp-type entrances and exits, such as... Figure 8 As shown, the top surface of the ramp is designed to be at the same height as the top surface of the cofferdam, which facilitates the entry of forklifts or wheelbarrows. The slope of the ramp should not be too large, as this will lead to an increased slope length, occupying the area within the ground, affecting the movement and turning of forklifts, and sometimes causing collisions with the foundation of the trench, which is also detrimental to the anti-corrosion slope and drainage design of the ground. Summary of the Invention
[0003] The purpose of this invention is to provide a corrosion-resistant ground entrance / exit structure. This entrance / exit structure not only prevents the leakage of spilled liquid, but also facilitates vehicle access, while ensuring that the ramp's slope is not too steep, thus avoiding the occupation of excessive floor space.
[0004] The technical solution of this utility model is as follows: A corrosion-resistant ground entrance / exit structure includes an entrance / exit opened on a cofferdam, the entrance / exit being higher than the ground level inside the cofferdam, a platform being provided inside the entrance / exit, an inner vehicle ramp being provided at the other end of the platform, an outer vehicle ramp being connected to the outside of the entrance / exit, a corrosion-resistant trench with an open top being provided on the platform, a steel grate being provided on the top of the corrosion-resistant trench, a steel cover plate being covered on the steel grate, one end of the steel cover plate being set close to the inner side of the cofferdam and rotatably connected to the top surface of the platform, the width of the steel cover plate being greater than the width of the entrance / exit, and sealing strips being provided on both sides of the steel cover plate that are wider than the entrance / exit.
[0005] In the aforementioned anti-corrosion ground entrance structure, the portion of the steel cover plate extending from both sides of the entrance is equipped with sealing strips.
[0006] In the aforementioned anti-corrosion ground entrance and exit structure, the portion of the steel cover plate that extends to the entrance and exit on both sides is a stepped structure; the cofferdams on both sides of the entrance and exit are also stepped structures.
[0007] In the aforementioned anti-corrosion ground entrance structure, the bottom of the anti-corrosion trench is lower than the ground surface, and the bottom of the anti-corrosion trench is connected to the accident pool or sewage tank via a buried pipe.
[0008] In the aforementioned corrosion-resistant ground entrance / exit structure, the steel cover plate has a 2% slope from the entrance / exit towards the inner vehicle ramp.
[0009] In the aforementioned corrosion-resistant ground entrance structure, the steel cover plate is rotatably connected to the top surface of the platform via a hinge.
[0010] In the aforementioned corrosion-resistant ground entrance / exit structure, the entrance / exit is 250mm higher than the ground level inside the cofferdam.
[0011] In the aforementioned corrosion-resistant ground entrance / exit structure, the slope of the inner vehicle ramp is 12%.
[0012] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model has the following advantages:
[0013] By setting up entrances and exits that are higher than the ground level, and providing inner and outer vehicle ramps on both sides of the entrances and exits, the top surface of the inner vehicle ramps is at most level with the entrances and exits. This ensures that the slope of the inner vehicle ramps is not too steep, the ramp length is not too long, and it does not occupy too much area of the ground. This avoids affecting forklift driving and turning, and there is no need to worry about the inner vehicle ramps colliding with the foundation of the trench. It also facilitates the design of the ground for corrosion protection, slope, and drainage.
[0014] The system features entrances and exits elevated above ground level, with inner and outer vehicle ramps on both sides, along with rotatable steel covers. The inner vehicle ramp itself prevents the ruptured liquid from flowing directly out. In the event of a rupture, the steel covers can be erected and combined with a cofferdam to form a complete containment structure, further preventing the ruptured liquid from flowing out.
[0015] By installing anti-corrosion trenches, when the height of the burst slurry exceeds the platform height, the burst slurry flows through the steel grate into the anti-corrosion trenches and then into the accident pool or sewage tank, so as to control, recycle and reuse the corrosive slurry. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2This is a schematic diagram of the structure when the steel cover plate is attached to the cofferdam.
[0018] Figure 3 This is a schematic diagram of the structure of the steel cover plate of this utility model when it is closed;
[0019] Figure 4 This is a schematic diagram of the steel cover plate of this utility model when it is opened halfway;
[0020] Figure 5 This is a schematic diagram of the steel cover plate of this utility model when it is fully opened;
[0021] Figure 6 This is a schematic diagram of a project with a cofferdam.
[0022] Figure 7 This is a schematic diagram of the conventional ramp slope method (I);
[0023] Figure 8 This is a schematic diagram of the conventional ramp slope method (II).
[0024] Attached reference numerals: 1-cofferdam, 2-entrance / exit, 3-platform, 4-inner vehicle ramp, 5-outer vehicle ramp, 6-anti-corrosion trench, 7-steel cover plate, 8-sealing strip, 9-steel grate, 10-buried pipe. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.
[0026] An embodiment of this utility model: A corrosion-resistant ground entrance / exit structure includes an entrance / exit 2 opened on a cofferdam 1. The bottom of the entrance / exit 2 is higher than the ground level inside the cofferdam 1. A platform 3 is provided inside the entrance / exit 2. An inner vehicle ramp 4 is provided at the other end of the platform 3. An outer vehicle ramp 5 is connected to the outside of the entrance / exit 2. A corrosion-resistant trench 6 with an open top is provided on the platform 3. A steel grate 9 is provided on the top of the corrosion-resistant trench 6. A steel cover plate 7 is covered on the steel grate 9. One end of the steel cover plate 7 is set close to the inner side of the cofferdam 1, and the end close to the cofferdam 1 is rotatably connected to the top surface of the platform 3. The width of the steel cover plate 7 is greater than the width of the entrance / exit 2. Sealing strips 8 are provided on both sides of the steel cover plate 7 that are wider than the entrance / exit 2.
[0027] In the structure of this utility model, since an entrance / exit 1 is set above the ground level, and an inner vehicle ramp 4 and an outer vehicle ramp 5 are set on both sides of the entrance / exit 1, the top surface of the inner vehicle ramp 5 is at most flush with the entrance / exit 1. This ensures that the slope of the inner vehicle ramp 5 is not too large, the ramp is not too long, and it does not occupy too much area in the ground, thus avoiding affecting the driving and turning of forklifts. There is no need to worry about the inner vehicle ramp 5 colliding with the foundation of the trough, which is beneficial to the anti-corrosion slope and drainage design of the ground.
[0028] Meanwhile, due to the height difference between the ground level and entrance / exit 1, this height difference prevents the burst liquid from flowing directly out through entrance / exit 1 in the event of a burst. Furthermore, in the event of a burst, the steel cover plate 7 can be quickly erected and combined with the cofferdam 1 to form a complete containment structure, further preventing the outflow of burst liquid. The width of the steel cover plate 7 is greater than the width of entrance / exit 2, ensuring that the erected steel cover plate 7 completely covers entrance / exit 2.
[0029] When an accident occurs and the liquid from the bursting tank exceeds the height of platform 3, the liquid can flow into the anti-corrosion trench 6 for collection and storage, facilitating subsequent treatment.
[0030] The sealing strip 8 ensures that when the steel cover plate 7 is erected, it fits tightly against the cofferdam 1, preventing the bursting liquid from flowing out from the gap between the two in the event of an accident.
[0031] The steel grate 9 is installed to prevent some debris from flowing directly into the anti-corrosion ditch 6.
[0032] The steel cover plate 7 has sealing strips 8 installed on both sides of the inlet / outlet 2, which can further improve the sealing performance.
[0033] The portion of the steel cover plate 7 extending to the entrance / exit 2 on both sides has a stepped structure; the cofferdam 1 on both sides of the entrance / exit 2 also has a stepped structure. The stepped structure of the steel cover plate 7 is precisely engaged with the stepped structure of the cofferdam.
[0034] The bottom of the anti-corrosion trench 6 is lower than the ground surface, which can collect and store a large amount of slurry from the sluice. The bottom of the anti-corrosion trench 6 is connected to the emergency pool or sewage tank via the buried pipe 10. The slurry from the sluice is sent to the emergency pool or sewage tank via the buried pipe 10 so as to control, recycle and reuse the corrosive slurry.
[0035] The steel cover plate 7 has a 2% slope from the entrance / exit 2 towards the inner vehicle ramp 4. This slope structure serves two purposes: firstly, to prevent the outflow of grout from the burst trough; and secondly, to allow most of the rainwater to flow down the steel cover plate 7 to the inner vehicle ramp 4 and then to the inner ground of the cofferdam 1 during normal rain, thus preventing a large amount of rainwater from flowing into the anti-corrosion trench 6 from the joint between the steel cover plate 7 and the inner vehicle ramp 4.
[0036] The steel cover plate 7 is rotatably connected to the top surface of the platform 3 via a hinge.
[0037] The entrance / exit 2 is 250mm higher than the ground level inside the cofferdam 1. The slope of the inner vehicle ramp 4 is 12%. This height and slope ensure that the inner vehicle ramp 4 does not occupy too much area. Furthermore, this height difference ensures that in the event of an accident and rupture, personnel have enough time to erect the steel cover plate 7.
[0038] This utility model designs the top elevation of the cofferdam 1 at entrance 2 to be 250mm higher than the ground level. The inner vehicular ramp 4 at entrance 2 has a slope of 12%. A corrosion-resistant trench 6 with a width of approximately 300mm and a depth of approximately 600mm is designed between platform 3 and cofferdam 1. A steel grate 9 is attached to the top of the corrosion-resistant trench 6, and a steel cover plate 7 for vehicle passage is installed on the steel grate 9 (with a 2% slope to prevent slurry outflow and rainwater inflow). To facilitate the opening of the steel cover plate 7, it can be installed in sections. The corrosion-resistant trench 6 is connected to the site's emergency pool or sewage tank via buried pipe 10.
[0039] Under normal operating conditions, the steel cover plate 7 on the anti-corrosion trench 6 prevents rainwater from entering the trench and thus the production system, increasing the production burden. In the event of an accidental trench burst, the steel cover plate 7 is manually opened. After opening, the 90-degree control hinge and the two side dikes 1 are used to position the steel cover plate 7 against the inside of the dikes 1, acting as a temporary dike. The steel cover plate 7 should be 50mm wider than the inlet and outlet 2 on both sides. A sealing strip 8 is attached to the top edge of the steel cover plate 7 to enhance the sealing effect of the temporary dike. When the slurry height exceeds 250mm above the ground level, it will flow through the steel grate 9 into the anti-corrosion trench 6 and then into the accident pool or system for controlled recycling and reuse of the corrosive slurry.
Claims
1. A corrosion-resistant ground entrance / exit structure, characterized in that: It includes an entrance (2) opened on the cofferdam (1), the entrance (2) is higher than the ground level inside the cofferdam (1), a platform (3) is set inside the entrance (2), an inner vehicle ramp (4) is set at the other end of the platform (3), an outer vehicle ramp (5) is connected to the outside of the entrance (2), and a corrosion-resistant trench (6) with an open top is set on the platform (3). A steel grate (9) is set on the top of the corrosion-resistant trench (6), and a steel cover plate (7) is covered on the steel grate (9). One end of the steel cover plate (7) is set close to the inside of the cofferdam (1) and is rotatably connected to the top surface of the platform (3). The width of the steel cover plate (7) is greater than the width of the entrance (2), and sealing strips (8) are set on the parts of the steel cover plate (7) that are wider than the entrance (2).
2. The corrosion-resistant ground entrance / exit structure according to claim 1, characterized in that: The steel cover plate (7) has sealing strips (8) installed on both sides of the opening and closing portion (2).
3. The corrosion-resistant ground entrance / exit structure according to claim 1, characterized in that: The portion of the steel cover plate (7) that extends to the entrance (2) on both sides is a stepped structure; the cofferdam (1) on both sides of the entrance (2) is also a stepped structure.
4. The corrosion-resistant ground entrance / exit structure according to claim 1, characterized in that: The bottom of the anti-corrosion trench (6) is lower than the ground surface, and the bottom of the anti-corrosion trench (6) is connected to the accident pool or sewage tank via a buried pipe (10).
5. The corrosion-resistant ground entrance / exit structure according to claim 1, characterized in that: The steel cover plate (7) is set with a 2% slope from the entrance (2) toward the inner vehicle ramp (4).
6. The corrosion-resistant ground entrance / exit structure according to claim 1, characterized in that: The steel cover plate (7) is rotatably connected to the top surface of the platform (3) via a hinge.
7. The corrosion-resistant ground entrance / exit structure according to claim 1, characterized in that: The entrance (2) is 250mm higher than the ground level inside the cofferdam (1).
8. The corrosion-resistant ground entrance / exit structure according to claim 1, characterized in that: The slope of the inner vehicular ramp (4) is 12%.