Fixing device for LNG cylinder

Abstract

A fixing device for an LNG (liquefied natural gas) cylinder belongs to the technical field of cylinders and comprises a base body, and a vertically through cavity is formed in the center of the base body, so that the base body can form a frame structure. The top side of the base body is provided with an arc-shaped concave face matched with the LNG cylinder, the LNG cylinder can be placed on the base body through the arc-shaped concave face, and the bottom of the base body is provided with a wrapping assembly used for reinforcing the base body. The two ends of the base body are connected with pulling belts through fixing mechanisms correspondingly, and the LNG cylinder can be fixed to the base body through the pulling belts. The fixing device for the LNG cylinder is simple in structure, low in weight, high in strength, convenient to manufacture, capable of effectively reducing production cost and suitable for popularization.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas cylinder technical field especially, it relates to a fixed device for LNG gas cylinder. BACKGROUND

[0002] LNG gas cylinder is a kind of special pressure vessel for storing liquefied natural gas (Liquefied Natural Gas, for short LNG). The main structure of LNG gas cylinder is double-layer vacuum structure, mainly comprising inner container, outer container, interface valve, liquid level sensor and other components. The working principle of LNG gas cylinder involves multiple systems, including liquid filling system, liquid outlet system, pressure increasing system, economic (self-pressurization / decompression) system and safety system.

[0003] LNG gas cylinder has the characteristics of continuous and stable liquid output, low-temperature liquid preservation for a long time, etc. At the same time, it also has the hard strength of anti-vibration, high-temperature resistance, anti-impact, etc., and can safely operate in various harsh environments. LNG gas cylinder is mainly applied to various medium and heavy trucks, buses, engineering vehicles, etc. whose engine fuel is natural gas. In addition, it can also be used in urban peak-shaving station construction, remote small gas field development and other fields, providing strong support for the storage and transportation of clean energy.

[0004] At present, the LNG gas cylinder used by natural gas vehicles is mainly installed through a gas cylinder frame. The gas cylinder frame is mainly used for supporting and fixing LNG gas cylinder, vaporizer, buffer tank, gas cylinder pipeline, etc., and facilitates fixing the gas cylinder on the vehicle frame. Although the existing gas cylinder frame has the above-mentioned advantages, there are still the following deficiencies in actual use for a long time: first, the gas cylinder frame is made of aluminum alloy, which has low melting point and high thermal expansion coefficient. The temperature, speed and deformation amount need to be well controlled during welding, which has high welding difficulty, long manufacturing cycle of the frame and is difficult to meet the delivery cycle; second, the gas cylinder frame is made of high-strength steel stamping, which has high hardness and high processing difficulty, resulting in high production cost. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the deficiencies of large manufacturing difficulty and high production cost of the existing gas cylinder frame, providing a fixed device for LNG gas cylinder, which has simple structure, low weight and high strength, is easy to manufacture, can effectively reduce production cost and is suitable for promotion.

[0006] The utility model discloses a fixing device for LNG cylinder, which comprises a base body, a cavity is formed in the center of the base body, and the cavity is vertically through the base body to form a frame structure; an arc-shaped concave surface is arranged on the top side of the base body and is adapted to the LNG cylinder, the LNG cylinder can be placed on the base body through the arc-shaped concave surface, and a wrapping assembly is arranged at the bottom of the base body to reinforce the base body; a pull belt is connected to each end of the base body through a fixing mechanism, and the LNG cylinder can be fixed on the base body through the pull belt.

[0007] The base body is designed as above, which is light in weight and has a high structural strength. Meanwhile, the arc-shaped concave surface 101 is perfectly adapted to the shape of the LNG cylinder 5, which facilitates the assembly of the LNG cylinder by the staff and reduces the assembly difficulty of the LNG cylinder.

[0008] Further, the arc length of the arc-shaped concave surface is not greater than half of the circumference of the LNG cylinder, and the height of the arc-shaped concave surface is equal to half of the radius of the LNG cylinder.

[0009] Further, maintenance openings are formed in the two sides of the base body.

[0010] Further, the base body has a honeycomb structure.

[0011] Further, the base body is made of a composite material and is integrally injection molded.

[0012] Further, the wrapping assembly comprises two guard plates A, and the two guard plates A are fixed at the two ends of the bottom of the base body.

[0013] Further, the two ends of each guard plate A are provided with a guard plate B, the guard plate B is fixed at the end of the base body and presses the outer side of the guard plate A.

[0014] Further, the guard plates A and B are both bent plates, the guard plate A can wrap the bottom side and the end face bottom of the base body, and the guard plate B can wrap the side end of the base body and the end face side of the base body.

[0015] Further, the fixing mechanism comprises a lifting lug bracket, the end of each side of the base body is provided with a lifting lug bracket, the lifting lug bracket is connected with the guard plate B, and a fixing pipe is vertically arranged on the lifting lug bracket; the end of the pull belt is provided with a plug rod which is adapted to the fixing pipe, the plug rod is inserted into the fixing pipe and is fixed through a fastener, so that the pull belt can be connected with the fixing mechanism.

[0016] The further improvement of the utility model further has that two fixed pipes are arranged on the lug support, and the pull belt adopts a spring pull belt.

[0017] From the above technical scheme, it can be seen that the beneficial effects of the utility model are that the base body of the device is a honeycomb structure, and is made of a composite material of PA66+GF30 and is processed and formed by integral injection molding. The base body adopts the design of a chamber, a honeycomb structure and a composite material. Compared with a traditional metal material, the base body not only effectively reduces the weight, but also greatly improves the structural strength. The base body is integrally injection molded, only one set of injection molding mold is needed, the processing difficulty is reduced, the processing efficiency is improved, and the production cost is saved. At the same time, the design of the arc-shaped concave surface can perfectly adapt to the shape of the LNG cylinder, facilitate the staff to assemble the cylinder, and reduce the assembly difficulty of the cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the utility model, the drawings needed to be used in the description will be simply introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the drawings for those skilled in the art without creative labor.

[0019] Figure 1 is a structural schematic diagram of the base body of the specific embodiment of the utility model.

[0020] Figure 2 is an exploded view of the specific embodiment of the utility model.

[0021] Figure 3 is a structural schematic diagram of the base body of the specific embodiment of the utility model.

[0022] Figure 4 is a structural schematic diagram of the guard plate A of the specific embodiment of the utility model.

[0023] Figure 5 is a structural schematic diagram of the guard plate B of the specific embodiment of the utility model.

[0024] Figure 6 is a structural schematic diagram of the fixing mechanism of the specific embodiment of the utility model.

[0025] In the drawing: 1, base body; 101, arc-shaped concave surface; 102, chamber; 103, maintenance opening; 2, fixing mechanism; 201, lug support; 202, fixed pipe; 3, pull belt; 4, wrapping assembly; 401, guard plate A; 402, guard plate B; 5, LNG cylinder. DETAILED DESCRIPTION

[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0027] Please refer to the attached document. Figures 1-6 The following is a description of a specific embodiment: The LNG cylinder fixing device of this utility model includes a base body 1. A vertically penetrating chamber 102 is provided at the center of the base body 1 so that the base body 1 can form a frame structure. An arc-shaped concave surface 101 adapted to the LNG cylinder 5 is provided on the top side of the base body 1, through which the LNG cylinder 5 can be placed on the base body 1.

[0028] The base body 1 has a honeycomb structure and is made of PA66+GF30 composite material, processed by one-piece injection molding. Through the design of the aforementioned chamber 102, honeycomb structure, and composite material, compared to traditional metal materials, the base body 1 not only effectively reduces its weight but also significantly improves its structural strength. Furthermore, the one-piece injection molding of the base body 1 requires only one injection mold, reducing processing difficulty, increasing processing efficiency, and thus saving production costs. Simultaneously, the arc-shaped concave surface 101 perfectly adapts to the shape of the LNG cylinder 5, facilitating cylinder assembly and reducing assembly difficulty.

[0029] The bottom of the base body 1 is provided with a reinforcing enclosure assembly 4. The enclosure assembly 4 includes two protective plates A401, which are respectively fixed to both ends of the bottom of the base body 1. Protective plates B402 are respectively provided at both ends of the protective plates A401, and the protective plates B402 are fixed to the ends of the base body 1 and press against the outer side of the protective plates A401. Through the design of the enclosure assembly 4, the cooperation of the protective plates A401 and B402 not only improves the structural strength of the base body, but also facilitates the assembly of other components by the workers.

[0030] Specifically, both protective plates A401 and B402 are bent plates. Protective plate A401 can wrap around the bottom side and bottom end face of the base body 1, while protective plate B402 can wrap around the side end and side end face of the base body 1. Through the above-mentioned bent plate design, protective plates A401 and B402 can more effectively wrap around the base body 1, thereby further improving the structural strength of the base body 1.

[0031] The two ends of the base body 1 are connected with a pull belt 3 through a fixing mechanism 2 respectively, the pull belt 3 adopts a spring pull belt, and the LNG cylinder 5 can be fixed on the base body 1 through the pull belt 3. The staff can quickly assemble the pull belt 3 through the fixing mechanism 2, and under the action of the fixing mechanism 2, not only the assembly difficulty of the pull belt 3 can be reduced, but also the stability of the pull belt 3 can be improved, so that the stability of the LNG cylinder 5 is improved.

[0032] Specifically, the fixing mechanism 2 comprises a lifting lug support 201, the end portions of the two sides of the base body 1 are provided with the lifting lug support 201, the lifting lug support 201 is connected with the guard plate B402, and two fixing pipes 202 are vertically arranged on the lifting lug support 201; the end portion of the pull belt 3 is provided with a plug rod matched with the fixing pipe 202, the plug rod is inserted into the fixing pipe 202 and is fixed through a fastener, so that the pull belt 3 can be connected with the fixing mechanism 2. The fixing mechanism 2 has a simple structure and is convenient to assemble, and through the cooperation of the fixing pipe 202 and the plug rod, the detachable assembly of the pull belt 3 is realized, which is convenient to operate and has high flexibility.

[0033] In one of the embodiments, the arc length of the arc-shaped concave surface 101 is not greater than half of the circumference length of the LNG cylinder 5, and the height of the arc-shaped concave surface 101 is equal to half of the radius of the LNG cylinder 5. The above design is more reasonable, is beneficial to the adaptation of the arc-shaped concave surface 101 to the LNG cylinder 5, and further improves the stability of the cylinder.

[0034] In one of the embodiments, maintenance openings 103 are arranged on the two sides of the base body 1 respectively. Through the design of the maintenance openings 103, the installation and maintenance space of the vaporizer and the buffer tank is reserved, and the installation and after-sales maintenance and replacement of the vaporizer and the buffer tank are facilitated.

[0035] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fixing device for LNG cylinder, comprising a base body (1), characterized in that, The base body (1) is provided with a cavity (102) penetrating from top to bottom in the center position, so that the base body (1) can form a frame structure; the top side of the base body (1) is provided with an arc-shaped concave surface (101) adapted to the LNG cylinder (5), the LNG cylinder (5) can be placed on the base body (1) through the arc-shaped concave surface (101), and the bottom of the base body (1) is provided with a wrapping assembly (4) for reinforcing the base body (1); the two ends of the base body (1) are connected with a drawstring (3) through a fixing mechanism (2) respectively, and the LNG cylinder (5) can be fixed on the base body (1) through the drawstring (3).

2. The fixing device for LNG cylinder according to claim 1, characterized in that, The arc length of the arc-shaped concave surface (101) is not greater than half of the circumference length of the LNG cylinder (5), and the height of the arc-shaped concave surface (101) is equal to half of the radius of the LNG cylinder (5).

3. The fixing device for LNG cylinder according to claim 1 or 2, characterized in that, The base body (1) is provided with a maintenance opening (103) on each side.

4. The fixing device for LNG cylinder according to claim 3, characterized in that, The base body (1) is a honeycomb structure.

5. The fixing device for LNG cylinder according to claim 4, characterized in that, The base body (1) is made of composite material and is processed by one-piece injection molding.

6. The fixing device for LNG cylinder according to claim 5, characterized in that, The wrapping assembly (4) includes two guard plates A (401), which are fixed at the two ends of the bottom of the base body (1).

7. The fixing device for LNG cylinder according to claim 6, characterized in that, The two ends of the guard plate A (401) are provided with guard plates B (402), which are fixed at the ends of the base body (1) and press the outer sides of the guard plates A (401).

8. The fixing device for LNG cylinder according to claim 7, characterized in that, The guard plates A (401) and B (402) are both bent plates, the guard plates A (401) can wrap the bottom side and the end face bottom of the base body (1), and the guard plates B (402) can wrap the side end of the base body (1) and the end face side thereof.

9. The fixing device for LNG cylinder according to claim 8, characterized in that, The fixing mechanism (2) includes a lifting lug bracket (201), the ends of the two sides of the base body (1) are provided with the lifting lug bracket (201), the lifting lug bracket (201) is connected with the guard plate B (402), and the fixing tube (202) is vertically arranged on the lifting lug bracket (201); the end of the drawstring (3) is provided with a plug rod adapted to the fixing tube (202), the plug rod is inserted into the fixing tube (202) and is fixed by a fastener, so that the drawstring (3) can be connected with the fixing mechanism (2).

10. The fixing device for LNG cylinder according to claim 9, characterized in that, The lifting lug bracket (201) is provided with two fixing tubes (202), and the drawstring (3) is a spring tension belt.

Images