A kind of tank steel dome air jacking is used to blow system
By designing a blower system with multiple blower units, flexible pipelines, and independent power supplies, the problem of unstable gas pumping during the lifting of the steel dome of the LNG storage tank was solved, achieving stable lifting and independent operation of the equipment, and improving system redundancy and maintenance convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 浙江浙能六横液化天然气有限公司
- Filing Date
- 2025-07-18
- Publication Date
- 2026-06-19
AI Technical Summary
In existing technologies, the lack of an efficient and stable gas pumping system during the jacking of the steel dome of an LNG storage tank leads to problems such as unstable jacking and non-independent equipment operation.
Design a blower system that includes a blower mechanism and a diesel generator. Set up multiple blower units, use flexible pipes to isolate vibration, provide independent power supply, and ensure system stability through flange connection. Design a backup blower and independent power supply to improve redundancy and stability.
The stable lifting of the steel dome of the LNG storage tank was achieved, ensuring the independence and stability of equipment operation and improving system redundancy and maintenance convenience.
Smart Images
Figure CN224381235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air blowing system technology, and in particular to an air blowing system for air jacking of a steel dome of a storage tank. Background Technology
[0002] LNG storage tanks are key equipment for storing liquefied natural gas (LNG), featuring technologies such as low-temperature resistance and high safety. LNG tank dome lifting is a core process in the construction of large storage tanks, using air pressure to precisely raise a prefabricated dome to the top of the tank.
[0003] This invention provides a system that uses a blower to pump gas into the tank to start the lifting process, meeting the needs of LNG storage tank production and operation. Utility Model Content
[0004] This utility model discloses a blower system for air-lifting the steel dome of a storage tank, including a blower mechanism and a diesel generator that provides power to the blower mechanism. Specifically, the diesel generator is the main power source for the blower mechanism.
[0005] The fan mechanism comprises several fan units, each including a connecting pipe. A blower is fixedly connected to the side wall of the connecting pipe. A flexible pipe is fixedly connected to one end of the connecting pipe, and an air valve is fixedly connected to the other end of the flexible pipe. An inlet pipe is fixedly connected to the other end of the air valve. The flexible pipe isolates the generated vibrations. In addition, each blower is independently equipped with a diesel generator.
[0006] Preferably, one of the fan units has a branch duct on its side wall. One end of the branch duct is fixedly connected between the air valve and the flexible pipe, and the other end of the branch duct is fixedly connected to a blower. The blower on this branch duct serves as a backup, and it is also independently equipped with a diesel generator.
[0007] Preferably, the air valve has a valve plate inside. Furthermore, the valve plate is connected to an actuating mechanism for driving the valve plate to move and thus open or close the air valve.
[0008] Preferably, the other end of the inlet pipe is connected to the lower part of the tank, and the end of the inlet pipe is located below the dome. Pumping air into the tank causes the dome to rise.
[0009] Preferably, flanges are used to connect and fix the connecting pipe and the flexible pipe, the flexible pipe and the air valve, and the air valve and the inlet pipe. Flanges are a common connection structure that facilitates later maintenance and repair operations.
[0010] The beneficial effects of this utility model are as follows:
[0011] 1. Multiple fan units are provided, one of which is equipped with a branch duct. The blower on the branch duct serves as a backup, thus achieving redundancy.
[0012] 2. A diesel generator is provided as the main power source, and each blower is powered independently, ensuring the independence and stability of operation.
[0013] 3. Flexible ducts are installed to isolate vibrations generated on both sides of the blower unit, ensuring the stable operation of the blower system. Attached Figure Description
[0014] Figure 1 This is a schematic diagram illustrating the application of this utility model;
[0015] Figure 2 This is a schematic diagram of the fan mechanism of this utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the fan unit of this utility model.
[0017] List of reference numerals in the attached diagram:
[0018] 1. Fan mechanism; 2. Tank body; 3. Dome;
[0019] 11. Fan unit; 12. Branch duct;
[0020] 111. Inlet pipe; 112. Air valve; 113. Valve plate; 114. Flexible pipe; 115. Connecting pipe; 116. Blower. Detailed Implementation
[0021] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.
[0022] like Figures 1 to 3 As shown, a blower system for air jacking of a steel dome of a storage tank includes a blower mechanism 1, which pumps gas into the tank body 2, and a diesel generator that provides power to the blower mechanism 1, which is the main power source for the blower mechanism 1.
[0023] The fan mechanism 1 is provided with several fan units 11, preferably three fan units 11. Each fan unit 11 includes a connecting pipe 115. A blower 116 is fixedly connected to the side wall of the connecting pipe 115. One end of the connecting pipe 115 is closed, that is, the blower 116 pumps air into the connecting pipe 15 when it works. One end of the connecting pipe 115 is fixedly connected to a flexible pipe 114. The other end of the flexible pipe 114 is fixedly connected to a damper 112 to separate the vibration generated on one side of the damper 112 or the vibration generated on one side of the connecting pipe 115. The other end of the damper 112 is fixedly connected to an inlet pipe 111.
[0024] One of the fan units 11 has a branch duct 12 on its side wall. The branch duct 12 is L-shaped and has a flexible pipe 114. One end of the branch duct 12 is fixedly connected between the air valve 112 and the flexible pipe 114. The other end of the branch duct 12 is fixedly connected to a blower 116. The blower 116 is a spare and is a redundant design of the blower system.
[0025] A valve plate 113 is installed inside the air valve 112. An actuating mechanism is also installed outside the air valve 112, with its actuating end connected to the valve plate 113. This mechanism, such as a linear motion pair like an electric cylinder, pulls the valve plate 113 out of the air valve 112, or drives a rotary motion pair like a motor, causing the valve plate 113 to rotate inside the air valve 112. In other words, the actuating mechanism operates, realizing the opening and closing of the air valve 112.
[0026] The other end of the inlet pipe 111 is connected to the lower part of the tank 2, and the end of the inlet pipe 111 is located below the dome 3. Its blower system operates, pumping air into the interior of the tank 2, causing the dome 3 to rise.
[0027] Flanges are used to fix the connection between the connecting pipe 115 and the flexible pipe 114, the flexible pipe 114 and the air valve 112, and the air valve 112 and the inlet pipe 111. Flanges are a common structure that facilitates subsequent inspection and maintenance.
[0028] Furthermore, each blower 116 is equipped with an independent diesel generator.
[0029] The technical means disclosed in this utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.
Claims
1. A blower system for air jacking of a steel dome of a storage tank, characterized in that, Includes a wind turbine mechanism (1) and a diesel generator that provides power to the wind turbine mechanism (1); The fan mechanism (1) is provided with a plurality of fan units (11). Each fan unit (11) includes a connecting pipe (115). A blower (116) is fixedly connected to the side wall of the connecting pipe (115). A flexible pipe (114) is fixedly connected to one end of the connecting pipe (115). An air valve (112) is fixedly connected to the other end of the flexible pipe (114). An inlet pipe (111) is fixedly connected to the other end of the air valve (112).
2. A forced air system for jacking a steel dome of a storage tank according to claim 1, characterized in that: One of the fan units (11) has a branch duct (12) on its side wall. One end of the branch duct (12) is fixedly connected between the air valve (112) and the flexible pipe (114), and the other end of the branch duct (12) is fixedly connected to a blower (116).
3. A forced air system for jacking a steel dome of a storage tank according to claim 1, characterized in that: The air valve (112) is equipped with a valve plate (113) inside.
4. A forced air system for jacking a steel dome of a storage tank according to claim 1, characterized in that: The other end of the inlet pipe (111) is connected to the lower part of the tank (2), and the end of the inlet pipe (111) is located below the dome (3).
5. A forced air system for jacking a steel dome of a storage tank according to claim 1, characterized in that: The connecting pipe (115) and the flexible pipe (114), the flexible pipe (114) and the air valve (112), and the air valve (112) and the inlet pipe (111) are all fixed by flange connection.