Welding device for liquid natural gas storage tank

Abstract

The utility model provides a welding device for a liquid natural gas storage tank, which belongs to the technical field of welding equipment and comprises a bottom plate. The number of the mounting frames is two, and the two mounting frames are fixedly connected to the upper surface of the bottom plate; the number of the outer ring frames is two, and the two outer ring frames are rotationally connected to the circumferential surfaces of the two mounting frames correspondingly. The number of the control assemblies is two, and the two control assemblies are connected with the two outer ring frames correspondingly. By means of the device, the control assembly and the sliding assembly operate to drive the welding device to weld different positions of the surface of the natural gas storage tank, a scaffold does not need to be erected, and welding operation is simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding equipment, and in particular relates to a welding device for a liquid natural gas storage tank. Background Art

[0002] Natural gas is one of the cleanest fuels in the world today. Its boiling point is -161°C at normal pressure and its volume is 1 / 600 of the gas volume under standard conditions. Liquefied natural gas (LNG) is the best way to store and transport it, which undoubtedly requires a pressure storage container with excellent quality and performance.

[0003] Liquid natural gas storage tanks are a form of storage and transportation of natural gas. Their widespread use is conducive to the recovery and storage of remote natural gas, the long-distance transportation of natural gas, the peak load regulation and market development in the use of natural gas, and the expansion of the use of natural gas. They can be widely used in LNG gasification stations, LNG peak load regulation stations, LNG filling stations and liquefaction plants.

[0004] When processing the liquid natural gas storage tank, it is necessary to weld the surface of the natural gas storage tank. After welding, the welding parts are polished and painted.

[0005] In the prior art, the volume of the liquid natural gas storage tank is large, and it is inconvenient to weld the upper surface of the storage tank when welding the surface of the storage tank. It is necessary to set up a scaffolding before welding the surface of the storage tank, which makes welding difficult. Utility Model Content

[0006] The utility model aims to provide a welding device for a liquid natural gas storage tank, aiming to solve the problem in the prior art that the liquid natural gas storage tank is large in size, it is inconvenient to weld the upper surface of the storage tank when welding the storage tank surface, and it is difficult to weld the storage tank surface after setting up a scaffolding.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A welding device for a liquid natural gas storage tank, comprising:

[0009] Base plate;

[0010] There are two mounting frames, both of which are fixedly connected to the upper surface of the bottom plate;

[0011] Two outer ring frames are provided, and the two outer ring frames are rotatably connected to the circumferential surfaces of the two mounting frames respectively;

[0012] The control assembly is provided with two groups, and the two groups of control assemblies are respectively connected to the two outer ring frames;

[0013] A sliding assembly connected to the two outer ring frames; and

[0014] A welder is arranged in the sliding assembly.

[0015] As a preferred solution of the utility model, each group of the control components includes a gear ring, a fixed plate, a first motor and a gear, the gear ring is fixedly connected to the surface of the outer ring frame, the fixed plate is fixedly connected to the outer surface of the mounting frame, the first motor is fixedly connected to the upper end of the fixed plate, the gear is fixedly connected to the output end of the first motor, and the gear is meshed with the gear ring.

[0016] As a preferred solution of the utility model, the sliding assembly includes a sliding frame, a sliding block, a second motor and a screw rod. The sliding frame is fixedly connected to the adjacent ends of the two outer ring frames, the second motor is fixedly connected inside the sliding frame, the screw rod is fixedly connected to the output end of the second motor, the screw rod is rotatably connected to an inner wall on one side of the sliding frame, the sliding block is slidably connected inside the sliding frame, and the sliding block is threadedly connected to the screw rod.

[0017] As a preferred solution of the utility model, two fixing frames are fixedly connected to the upper surface of the base plate, and the two mounting frames are fixedly connected in the two fixing frames.

[0018] As a preferred solution of the utility model, the diameter of the circumferential inner wall of the mounting frame is 3m.

[0019] As a preferred solution of the present utility model, the length of the base plate is 4m.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. In this scheme, by using this device, the control component and the sliding component drive the welder to perform welding processing on different positions on the surface of the natural gas storage tank, without setting up scaffolding, and the welding operation is simple.

[0022] 2. In this solution, when it is necessary to weld the surface of the natural gas storage tank, the control component is operated, and the control component drives the outer ring frame to rotate. When the outer ring frame rotates, it drives the welder to rotate through the sliding component. When the welder is running, it welds the surface of the natural gas storage tank through its output end. The sliding component is used to control the position of the welder, which is convenient for adjusting the position of the welder on the surface of the natural gas storage tank to facilitate welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

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

[0025] Figure 2 It is a schematic diagram of the structure of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the utility model.

[0027] In the figure: 1, bottom plate; 2, fixed frame; 3, mounting frame; 4, outer ring frame; 5, gear ring; 6, fixed plate; 7, first motor; 8, gear; 9, sliding frame; 10, sliding block; 11, second motor; 12, welding device. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example

[0030] See also Figure 1-Figure 3 , the utility model provides the following technical solutions:

[0031] A welding device for a liquid natural gas storage tank, comprising:

[0032] Bottom plate 1;

[0033] Two mounting frames 3 are provided, and both mounting frames 3 are fixedly connected to the upper surface of the bottom plate 1;

[0034] Two outer ring frames 4 are provided, and the two outer ring frames 4 are rotatably connected to the circumferential surfaces of the two mounting frames 3 respectively;

[0035] The control assembly is provided with two groups, and the two groups of control assemblies are respectively connected to the two outer ring frames 4;

[0036] A sliding assembly connected to the two outer ring frames 4; and

[0037] The welder 12 is disposed in the sliding assembly.

[0038] In a specific embodiment of the utility model, the mounting frame 3 fixed on the upper surface of the base plate 1 is used to place the liquid natural gas storage tank to be welded. When the surface of the natural gas storage tank needs to be welded, the control component is operated, and the control component drives the outer ring frame 4 to rotate. When the outer ring frame 4 rotates, it drives the welder 12 to rotate through the sliding component. When the welder 12 is running, it welds the surface of the natural gas storage tank through its output end. The sliding component is used to control the position of the welder 12, which is convenient for adjusting the position of the welder 12 on the surface of the natural gas storage tank to facilitate welding.

[0039] For details, please refer to Figure 1-Figure 3 Each control component group includes a gear ring 5, a fixed plate 6, a first motor 7 and a gear 8. The gear ring 5 is fixedly connected to the surface of the outer ring frame 4, the fixed plate 6 is fixedly connected to the outer surface of the mounting frame 3, the first motor 7 is fixedly connected to the upper end of the fixed plate 6, the gear 8 is fixedly connected to the output end of the first motor 7, and the gear 8 is meshed with the gear ring 5.

[0040] In this embodiment: the fixed plate 6 in the control component serves to install the first motor 7. When the first motor 7 is running, it drives the gear 8 connected to its output end to rotate. The gear 8 is meshed with the gear ring 5, and the gear 8 drives the gear ring 5 to rotate, and the gear ring 5 drives the outer ring frame 4 to rotate.

[0041] For details, please refer to Figure 1-Figure 3 The sliding assembly includes a sliding frame 9, a sliding block 10, a second motor 11 and a screw. The sliding frame 9 is fixedly connected to the adjacent ends of the two outer ring frames 4. The second motor 11 is fixedly connected inside the sliding frame 9. The screw is fixedly connected to the output end of the second motor 11. The screw is rotatably connected to an inner wall of one side of the sliding frame 9. The sliding block 10 is slidably connected inside the sliding frame 9. The sliding block 10 is threadedly connected to the screw.

[0042] In this embodiment: the second motor 11 in the sliding assembly drives the screw connected to its output end to rotate when running, and the screw drives the sliding block 10 to slide in the sliding frame 9 when rotating, and the sliding block 10 drives the welder 12 to move, which is convenient for adjusting the welder 12.

[0043] For details, please refer to Figure 1-Figure 3 Two fixing frames 2 are fixedly connected to the upper surface of the base plate 1 , and two mounting frames 3 are fixedly connected inside the two fixing frames 2 .

[0044] In this embodiment: the fixing frame 2 serves to reinforce the mounting frame 3 .

[0045] For details, please refer to Figure 1-Figure 3 The inner wall diameter of the circumference of the mounting frame 3 is 3m.

[0046] In this embodiment: this diameter is suitable for most natural gas storage tanks.

[0047] For details, please refer to Figure 1-Figure 3 , the length of the base plate 1 is 4m.

[0048] In this embodiment, the bottom plate 1 of this length is suitable for welding of most natural gas storage tanks.

[0049] It should be noted that the specific types of the first motor 7, the second motor 11 and the welder 12 to be used are selected by relevant technical personnel familiar with the field, and the above-mentioned first motor 7, the second motor 11 and the welder 12 are all existing technologies and will not be elaborated in this solution.

[0050] The working principle and use process of the utility model: when the device is in use, the natural gas storage tank to be welded is hoisted into two mounting frames 3 by using hoisting equipment. When the surface of the natural gas storage tank needs to be welded, the welder 12 is controlled to operate to weld the surface of the natural gas storage tank. The position of the welder 12 on the natural gas surface is controlled by the operation of the sliding component. The operation of the control component drives the outer ring frame 4 to rotate. When the outer ring frame 4 rotates, the sliding component drives the welder 12 to rotate, and welding is performed on different positions of the surface of the natural gas storage tank; by using the device, the control component and the sliding component drive the welder 12 to perform welding processing on different positions of the surface of the natural gas storage tank, and there is no need to set up scaffolding, and the welding operation is simple.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A welding device for a liquid natural gas storage tank, characterized in that: include: Bottom plate (1); Two mounting frames (3) are provided, and both mounting frames (3) are fixedly connected to the upper surface of the bottom plate (1); Two outer ring frames (4) are provided, and the two outer ring frames (4) are rotatably connected to the circumferential surfaces of the two mounting frames (3) respectively; A control component, which is provided with two groups, and the two groups of control components are respectively connected to the two outer ring frames (4); A sliding assembly connected to two outer ring frames (4); and A welder (12) is disposed in the sliding assembly.

2. A welding device for a liquid natural gas storage tank according to claim 1, characterized in that: Each group of the control components comprises a gear ring (5), a fixed plate (6), a first motor (7) and a gear (8); the gear ring (5) is fixedly connected to the surface of the outer ring frame (4); the fixed plate (6) is fixedly connected to the outer surface of the mounting frame (3); the first motor (7) is fixedly connected to the upper end of the fixed plate (6); the gear (8) is fixedly connected to the output end of the first motor (7); and the gear (8) is meshed with the gear ring (5).

3. A welding device for a liquid natural gas storage tank according to claim 2, characterized in that: The sliding assembly comprises a sliding frame (9), a sliding block (10), a second motor (11) and a screw rod, wherein the sliding frame (9) is fixedly connected to the adjacent ends of the two outer ring frames (4), the second motor (11) is fixedly connected inside the sliding frame (9), the screw rod is fixedly connected to the output end of the second motor (11), the screw rod is rotatably connected to an inner wall of one side of the sliding frame (9), the sliding block (10) is slidably connected inside the sliding frame (9), and the sliding block (10) is threadedly connected to the screw rod.

4. A welding device for a liquid natural gas storage tank according to claim 3, characterized in that: Two fixing frames (2) are fixedly connected to the upper surface of the base plate (1), and the two mounting frames (3) are both fixedly connected inside the two fixing frames (2).

5. A welding device for a liquid natural gas storage tank according to claim 4, characterized in that: The diameter of the inner wall of the circumference of the mounting frame (3) is 3m.

6. A welding device for a liquid natural gas storage tank according to claim 5, characterized in that: The length of the base plate (1) is 4 m.

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