LNG vertical storage tank operation platform

Abstract

The utility model relates to a storage tank protection device, in particular to an LNG (Liquefied Natural Gas) vertical storage tank operation platform, and aims to overcome the defects that in an existing LNG filling station, workers are difficult to operate and overhaul an LNG vertical storage tank, and the safety is low. The LNG vertical storage tank operation platform comprises a supporting frame, a working platform arranged on the top of the supporting frame, a first stair channel and a second stair channel, wherein the first stair channel and the second stair channel are connected with the working platform. The end, correspondingly connected with the top of the first stair channel, of the working platform extends out of the protective embankment of the LNG vertical storage tank, the lower end of the first stair channel is connected with a foundation outside the protective embankment of the LNG vertical storage tank, the upper end of the first stair channel is connected with the working platform, people can conveniently and directly move out of the protective embankment under the dangerous condition, and working safety is improved. The second stair channel is located in the protective dam of the LNG vertical storage tank, the lower end of the second stair channel is connected with a foundation in the protective dam of the LNG vertical storage tank, and the upper end of the second stair channel is connected with the working platform.

Description

Technical Field

[0001] The utility model relates to a storage tank protection device, in particular to an LNG vertical storage tank operating platform. Background Art

[0002] The LNG vertical storage tanks used in LNG filling stations are generally installed in protective dikes, on which are usually provided various control valves, vacuum ports, instruments and other related equipment, which require manual operation, maintenance, regular inspections, etc. However, in existing LNG filling stations, no suitable operating platform is provided, which makes it difficult for staff to operate and maintain the LNG vertical storage tanks and has low safety. There is an urgent need for an operating platform that can facilitate the operation and maintenance of the LNG vertical storage tanks by staff and can improve work efficiency and safety. Utility Model Content

[0003] The utility model aims to solve the shortcomings of the existing LNG filling station, that the operation and maintenance of the LNG vertical storage tank by the staff are relatively difficult and the safety is low, and to provide an LNG vertical storage tank operation platform.

[0004] To achieve the above purpose, the technical solutions provided by the utility model are as follows:

[0005] An LNG vertical storage tank operating platform is special in that it includes a support frame arranged on the peripheral foundation of the LNG vertical storage tank, a working platform arranged on the top of the support frame, and a first staircase passage and a second staircase passage connecting the working platform and the peripheral foundation of the LNG vertical storage tank; the working platform is correspondingly arranged on the peripheral side of the LNG vertical storage tank and is located in the protective dike of the LNG vertical storage tank, and its height matches the various valves and instruments arranged on the side wall of the LNG vertical storage tank, so that the staff can work thereon; the first staircase passage is located outside the protective dike of the LNG vertical storage tank, and the end of the working platform corresponding to the top of the first staircase passage extends outside the protective dike of the LNG vertical storage tank, and its height is higher than the height of the protective dike of the LNG vertical storage tank; the lower end of the first staircase passage is connected to the foundation outside the protective dike of the LNG vertical storage tank, and the upper end is connected to the working platform; the second staircase passage is located in the protective dike of the LNG vertical storage tank, and the lower end of the second staircase passage is connected to the foundation inside the protective dike of the LNG vertical storage tank, and the upper end is connected to the working platform.

[0006] Furthermore, the distance between the side of the working platform close to the LNG vertical storage tank and the side wall of the LNG vertical storage tank is defined as L, and L satisfies the following conditions:

[0007] 240mm≤L≤280mm.

[0008] Furthermore, the working platform is arranged around three sides of the LNG vertical storage tank.

[0009] Furthermore, the working platform includes a first platform and a second platform respectively arranged on both sides of the LNG vertical storage tank, and a third platform connecting the first platform and the second platform;

[0010] Extension ends are provided at both ends of the third platform; the height of one of the extension ends is higher than the height of the protective dike of the LNG vertical storage tank and extends beyond the protective dike of the LNG vertical storage tank, and the upper end of the first staircase passage is connected to the working platform through the extension end; the upper end of the second staircase passage is connected to the working platform through the other extension end.

[0011] Furthermore, guardrails and safety handrails are provided on both sides of the working platform, the first staircase passage and the second staircase passage.

[0012] Furthermore, the width of the first platform, the second platform, the third platform, the first staircase passage and the second staircase passage is not less than 750 mm;

[0013] The height-to-length ratio of the first staircase passage and the second staircase passage is less than 0.85;

[0014] The upper surfaces of the first and third platforms are 200 mm lower than the upper surface of the second platform, and the lower surfaces are 2.25 m above the ground inside the protection dike;

[0015] Furthermore, a skirting board with a height of 100 mm is provided at the bottom of the guardrail;

[0016] The width of the third platform is 920 mm.

[0017] Furthermore, the working platform, the support frame, the first stairway and the second stairway are all made of steel;

[0018] The upper surfaces of the working platform, the first staircase passage and the second staircase passage are provided with checkered steel plates.

[0019] Beneficial effects of the utility model:

[0020] 1. The utility model LNG vertical storage tank operating platform is provided with a first staircase passage and a second staircase passage, the bottom ends of which are respectively arranged outside and inside the protective dike of the LNG vertical storage tank, so as to facilitate personnel to move directly outside the protective dike in dangerous situations and improve work safety.

[0021] 2. The utility model LNG vertical storage tank operation platform fully considers the safety factors of personnel, and realizes anti-slip and anti-falling through measures such as guardrails and safety handrails. The platform design reduces the safety risks of workers during operation and ensures the safety of workers. The platform design is easy to maintain, and it is convenient to inspect and repair the LNG vertical storage tank and replace damaged parts, extending the service life of the LNG vertical storage tank.

[0022] 3. The utility model LNG vertical storage tank operating platform is made of corrosion-resistant steel to cope with the erosion of corrosive media such as LNG on the platform. The platform structure is reasonably designed and can withstand large loads and impact forces to ensure the safety of workers on it, and has good corrosion resistance and stability.

[0023] 4. The utility model LNG vertical storage tank operating platform provides a convenient and efficient working environment for the staff, allowing them to quickly and accurately complete various work tasks, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0025] Figure 2 yes Figure 1 A view in the direction of FIG. 1 (the LNG vertical storage tank, the protective dike and the second stairway are not shown in the figure);

[0026] Figure 3 yes Figure 1 A view in the direction of B (the LNG vertical storage tank and the protective dike are not shown in the figure);

[0027] Description of reference numerals:

[0028] 1-working platform, 11-first platform, 12-second platform, 13-third platform, 2-support frame, 3-first staircase passage, 4-second staircase passage, 5-LNG vertical storage tank, 6-guardrail, 7-protective dike. DETAILED DESCRIPTION

[0029] The utility model discloses an LNG vertical storage tank operating platform structure as follows Figures 1 to 3As shown, it includes a support frame 2 arranged on the peripheral foundation of the LNG vertical storage tank 5, a working platform 1 arranged on the top of the support frame 2, and a first staircase passage 3 and a second staircase passage 4 connecting the working platform 1 and the peripheral foundation of the LNG vertical storage tank 5. The working platform 1, the support frame 2, the first staircase passage 3 and the second staircase passage 4 are all made of steel; the working platform 1 is correspondingly arranged on the peripheral side of the LNG vertical storage tank 5 and is located in the protective dike 7 of the LNG vertical storage tank 5. Its height matches the various valves and instruments arranged on the side wall of the LNG vertical storage tank 5, so that the staff can be located thereon. Work is performed on the first staircase passage 3; the bottom end of the first staircase passage 3 is located outside the levee 7 of the LNG vertical storage tank 5, and the end of the work platform 1 corresponding to the top of the first staircase passage 3 extends to the outside of the levee 7 of the LNG vertical storage tank 5, and its height is higher than the height of the levee 7 of the LNG vertical storage tank 5. The lower end of the first staircase passage 3 is connected to the foundation outside the levee 7 of the LNG vertical storage tank 5, and the upper end is connected to the work platform 1; the bottom end of the second staircase passage 4 is located inside the levee 7 of the LNG vertical storage tank 5, and its lower end is connected to the foundation inside the levee 7 of the LNG vertical storage tank 5, and the upper end is connected to the work platform 1. Define the distance between the side of the work platform 1 close to the LNG vertical storage tank 5 and the side wall of the LNG vertical storage tank 5 as L, and L meets the following conditions:

[0030] 240mm≤L≤280mm.

[0031] In this embodiment, the volume of the LNG vertical storage tank 5 is 60m 3 , which is equipped with 6 main valves, safety vent valves, vacuum ports and instruments, which are dispersedly arranged on the left, front and right sides of the LNG vertical storage tank 5. Therefore, the working platform 1 needs to surround the LNG vertical storage tank 5 on three sides, and "surround" the LNG vertical storage tank 5 on three sides, so as to smoothly realize various operations on the LNG vertical storage tank 5. The working platform 1 was designed to take into account the influence of the process and instrument pipelines in the protective dike 7, and the highest point above the ground is about 2.55 meters. Figure 1 As shown, in this embodiment, the working platform 1 includes a first platform 11 and a second platform 12 which are respectively arranged on the left and right sides of the LNG vertical storage tank 5, and a third platform 13 which is arranged in front of the LNG vertical storage tank 5 and connects the first platform 11 and the second platform 12; both ends of the third platform 13 are provided with extension ends, and the height of one of the extension ends is higher than the height of the protective dike 7 of the LNG vertical storage tank 5, and extends to the outside of the protective dike 7 of the LNG vertical storage tank 5, and the upper end of the first staircase passage 3 is connected to the working platform 1 through the extension end; the upper end of the second staircase passage 4 is connected to the working platform 1 through another extension end.

[0032] The working platform 1 provides a safer and more stable working environment for the gas station staff, so that they can perform various operations such as daily inspections, instrument readings, valve control, equipment maintenance, etc. If an LNG leak occurs in the process equipment in the gas station protection dike 7 and an emergency evacuation is required, the staff on the working platform 1 can directly escape to the outside of the protection dike 7 through the first staircase passage 3 of the working platform 1. Compared with the traditional operating platform, which needs to first go down to the ground inside the protection dike 7, and then pass through the two exit steps of the protection dike 7 or directly climb over the guardrail 6 of the protection dike 7, the structure of the utility model improves the escape speed and has an emergency evacuation function.

[0033] In order to ensure the safety of the staff, guardrails 6 and safety handrails are installed on both sides of the working platform 1, the first staircase passage 3 and the second staircase passage 4, and the structural design is reasonably optimized in combination with the on-site conditions, the material selection is optimized, the structural stability is improved, and the accidents such as slipping and falling are avoided. The safety protection function is provided to ensure the personal safety of the staff. In this embodiment, the width of the working platform 1, the first staircase passage 3 and the second staircase passage 4 is not less than 750mm, ensuring that one person can pass smoothly in a normal posture, which is ergonomic, and a checkered steel plate is set on the upper surface to increase the friction; the height-to-length ratio of the first staircase passage 3 and the second staircase passage 4 is less than 0.85, and the slope is relatively gentle; a 100mm high skirting board is set at the bottom of the guardrail 6 to prevent the staff from accidentally slipping and falling from the platform in the winter rainy season; the upper surface of the first platform 11 and the third platform 13 is 200mm lower than the upper surface of the second platform 12, and the lower surface is 2.25m above the ground in the protective embankment 7, which is convenient for on-site control operations and meets the requirements between it and the second platform 12.

[0034] In order to improve the safety of the staff and the flexibility of operation, the third platform 13 can be widened to 920 mm using the existing space to facilitate the normal passage of the staff from under the platform.

[0035] The LNG vertical tank operating platform plays an important role in the production and operation of LNG filling stations. It has the functions of carrying and operation, safety protection, monitoring and management, which can improve work efficiency, ensure personnel safety and enhance the safety of tank operation.

[0036] The above description is only a specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the present utility model, and these modifications or substitutions should be included in the protection scope of the present utility model.

Claims

1. An LNG vertical storage tank operating platform, characterized by: It comprises a support frame (2) arranged on the peripheral foundation of a vertical LNG storage tank (5), a working platform (1) arranged on the top of the support frame (2), and a first staircase passage (3) and a second staircase passage (4) connecting the working platform (1) and the peripheral foundation of the vertical LNG storage tank (5); The working platform (1) is arranged correspondingly on the peripheral side of the LNG vertical storage tank (5) and is located inside the protective dike (7) of the LNG vertical storage tank (5). Its height matches the various valves and instruments arranged on the side wall of the LNG vertical storage tank (5) so that workers can work on it. The first staircase passage (3) is located outside the protective dike (7) of the LNG vertical storage tank (5); the end of the working platform (1) corresponding to the top of the first staircase passage (3) extends outside the protective dike (7) of the LNG vertical storage tank (5), and its height is higher than the height of the protective dike (7) of the LNG vertical storage tank (5); the lower end of the first staircase passage (3) is connected to the foundation outside the protective dike (7) of the LNG vertical storage tank (5), and the upper end is connected to the working platform (1); The second staircase passage (4) is located in the protective dike (7) of the LNG vertical storage tank (5), with its lower end connected to the foundation in the protective dike (7) of the LNG vertical storage tank (5) and its upper end connected to the working platform (1).

2. According to claim 1, a LNG vertical storage tank operating platform is characterized in that: The distance between the side of the working platform (1) close to the LNG vertical storage tank (5) and the side wall of the LNG vertical storage tank (5) is defined as L, and L satisfies the following conditions: 240mm≤L≤280mm.

3. The LNG vertical storage tank operating platform according to claim 1 or 2, characterized in that: The working platform (1) is arranged to surround the circumference of the LNG vertical storage tank (5) on three sides.

4. According to claim 3, the LNG vertical storage tank operating platform is characterized in that: The working platform (1) comprises a first platform (11) and a second platform (12) respectively arranged on both sides of the LNG vertical storage tank (5), and a third platform (13) connecting the first platform (11) and the second platform (12); Both ends of the third platform (13) are provided with extension ends; the height of one of the extension ends is higher than the height of the protective dike (7) of the LNG vertical storage tank (5) and extends beyond the protective dike (7) of the LNG vertical storage tank (5); the upper end of the first staircase passage (3) is connected to the working platform (1) via the extension end; the upper end of the second staircase passage (4) is connected to the working platform (1) via the other extension end.

5. The LNG vertical storage tank operating platform according to claim 4, characterized in that: Guardrails (6) and safety handrails are provided on both sides of the working platform (1), the first staircase passage (3) and the second staircase passage (4).

6. The LNG vertical storage tank operating platform according to claim 5, characterized in that: The width of the first platform (11), the second platform (12), the third platform (13), the first staircase passage (3) and the second staircase passage (4) is not less than 750 mm; The height-to-length ratio of the first staircase passage (3) and the second staircase passage (4) is less than 0.85; The upper surfaces of the first platform (11) and the third platform (13) are 200 mm lower than the upper surface of the second platform (12), and the height of the lower surfaces from the ground inside the protective dike (7) is 2.25 m.

7. The LNG vertical storage tank operating platform according to claim 6, characterized in that: A skirting board with a height of 100 mm is arranged at the bottom of the guardrail (6); The width of the third platform (13) is 920 mm.

8. The LNG vertical storage tank operating platform according to claim 1, characterized in that: The working platform (1), the support frame (2), the first staircase passage (3) and the second staircase passage (4) are all made of steel; The upper surfaces of the working platform (1), the first staircase passage (3) and the second staircase passage (4) are provided with checkered steel plates.

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