A liquefied natural gas fuel system outlet pipe positioning device

Abstract

The utility model relates to a kind of vehicle liquefied natural gas gas system liquid outlet pipe positioning device, including gas cylinder assembly frame, locating plate, locating step hole and liquid outlet pipe;Detachable locating plate is provided on gas cylinder assembly frame, locating plate is provided with several locating step holes, liquid outlet pipe one end is connected with the liquid outlet valve of vehicle liquefied natural gas gas system, and the other end is detachably inserted with locating step hole:The utility model realizes the accurate and rapid positioning of gas device liquid outlet pipe, and guarantees the consistency of liquid outlet pipe size after assembly, improves the positioning accuracy and work efficiency.Size detection difficulty and size after assembly cannot meet design requirements are avoided, while the quality and consistency of product are greatly improved, the operation procedure is indirectly optimized, and production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive liquefied natural gas technology, and in particular to a positioning device for the outlet pipe of an automotive liquefied natural gas fuel system. Background Technology

[0002] Liquefied natural gas (LNG) cylinders for vehicles are widely used as cryogenic, insulated pressure vessels that can be refilled multiple times, replacing traditional fuel tanks for storing and supplying LNG. Manufacturers operate on a mass production basis; therefore, product quality and production efficiency are key factors determining a company's future prospects. Currently, the external piping dimensions directly affect the compatibility of existing LNG fuel systems with the vehicle. If size issues lead to assembly difficulties or forced assembly, specialized personnel must be assigned to rework and adjust the system to meet quality requirements, resulting in low efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system includes a gas cylinder assembly frame, a positioning plate, a positioning step hole, and an outlet pipe;

[0006] The positioning plate is detachably mounted on the gas cylinder assembly frame. The positioning plate is provided with a plurality of positioning step holes. One end of the liquid outlet pipe is connected to the liquid outlet valve of the vehicle liquefied natural gas fuel system, and the other end is detachably inserted into the positioning step holes.

[0007] Furthermore, the positioning plate has a bent structure.

[0008] Furthermore, the positioning stepped hole is a cylindrical structure with a stepped hole.

[0009] Furthermore, it also includes a reinforcing plate, which is also provided on the positioning plate.

[0010] Furthermore, it also includes a limiting and fixing plate, the positioning plate is connected to the limiting and fixing plate, and the limiting and fixing plate is connected to the gas cylinder assembly frame through limiting pins.

[0011] Furthermore, it also includes stiffening plates; the positioning plate is also provided with a plurality of such stiffening plates.

[0012] Furthermore, it also includes handrails; the handrails are also provided on the positioning plate.

[0013] Furthermore, the handrail has a bent structure.

[0014] Furthermore, the positioning plate, the limiting and fixing plate, the handrail, and the reinforcing plate are all made of stainless steel.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention enables precise and rapid positioning of the liquid outlet pipe of a gas device, ensuring consistency in the size of the outlet pipe after assembly, thus improving positioning accuracy and work efficiency. It avoids difficulties in dimensional inspection and the inability to meet design requirements after assembly, while significantly improving product quality and consistency, indirectly optimizing operating procedures and increasing production efficiency. Attached Figure Description

[0017] Figure 1 This is a front view of the overall structure of this utility model;

[0018] Figure 2 This is a right view of the overall structure of this utility model;

[0019] Figure 3 This is a partial enlarged view of the overall structure of this utility model;

[0020] Figure 4 This is a partial enlarged left view of the overall structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the positioning plate structure of this utility model. Figure 1 ;

[0022] Figure 6 This is a schematic diagram of the positioning plate structure of this utility model. Figure 2 .

[0023] In the diagram: 1. Positioning plate; 2. Handrail; 3. Reinforcing plate; 4. Positioning step; 5. Limiting and fixing plate; 6. Limiting pin; 7. Gas cylinder assembly frame; 8. Liquid outlet pipe; 9. Rib plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-6 As shown: A positioning device for the outlet pipe of a vehicle liquefied natural gas gas system includes a natural gas cylinder, a cylinder assembly frame 7, a positioning plate 1, a positioning step hole 4, and an outlet pipe 8;

[0026] A positioning plate 1 is detachably installed on the gas cylinder assembly frame 7. The positioning plate 1 is provided with several positioning step holes 4. One end of the liquid outlet pipe 8 is connected to the liquid outlet valve of the vehicle liquefied natural gas gas system, and the other end is detachably inserted into the positioning step holes 4.

[0027] Positioning plate 1 has a bent structure. Positioning plate 1 is preferably made of stainless steel plate with a length of 450mm, a width of 140mm, and a thickness of 3mm. Before bending, cut off 80mm long and 104mm wide plate from one corner of the plate. The remaining plate is bent upward from the 104mm long uncut end at a bending angle of 90° and a bending radius of 6mm. Then, similarly, measure 50mm upward from the bottom of the bend and bend it in the opposite direction at a 90° angle with a bending radius of 6mm.

[0028] The positioning step hole 4 is a cylindrical structure with a stepped hole. Two are designed to facilitate the positioning of liquid outlet pipes with different size requirements. The positioning step hole 4 is preferably made of a cylinder with an outer diameter of 23mm, an inner diameter of 14mm, and a height of 20mm. A hole with a height of 15mm and a diameter of 19mm is milled on the inner side of the top surface of the cylinder, leaving a step with a diameter of 14mm and a height of 5mm. The structure is simple and easy to process.

[0029] It also includes a reinforcing plate 3, which is also provided on the positioning plate 1. The reinforcing plate 3 has an I-shaped structure, preferably made of three small plates with a length of 80mm, a width of 4mm, and a height of 4mm, which are then welded onto the positioning plate 1 located on the back side of the positioning step hole 4 to prevent deformation after long-term use and thus prevent positioning errors.

[0030] It also includes a limiting and fixing plate 5, with the positioning plate 1 connected to the limiting and fixing plate 5. The limiting and fixing plate 5 is connected to the gas cylinder assembly frame 7 via limiting pins 6. The positioning plate 1 is welded onto the limiting and fixing plate 5. The limiting and fixing plate 5 is preferably made of stainless steel plate with a length of 180mm, a width of 95mm, and a thickness of 3mm. Stainless steel plates with a length of 45mm and a width of 70mm and a length of 120mm and a width of 20mm are cut at two diagonal points in the width direction to avoid interference with the gas cylinder assembly frame 7. Four 12mm through holes for fixing positions are drilled on the limiting and fixing plate 5, and the limiting pins 6 are used to tightly connect to the through holes.

[0031] It also includes stiffening plates 9; the positioning plate 1 is also provided with several stiffening plates 9. Two are designed to act on the bending part of the front of the positioning plate 1 and the connection with the limiting and fixing plate 5 for reinforcement. The stiffening plates 9 are preferably made of trapezoidal stainless steel plates with an upper bottom edge of 50mm, a lower bottom edge of 72mm, a height of 10mm and a back edge of 3mm.

[0032] It also includes handrail 2; handrail 2 is also provided on the positioning plate 1.

[0033] Handrail 2 has a bent structure. Handrail 2 is preferably made of stainless steel tube with an outer diameter of 18mm, a length of 250mm, and a thickness of 2mm. It is then bent inward at both ends at 55mm, with a bending angle of 90° and a bending radius of 20.

[0034] Positioning plate 1, limit fixing plate 5, handrail 2, and stiffening plate 9 are all made of stainless steel.

[0035] Working principle: The handle 2 and positioning plate 1 are tightly attached to the end face of the gas cylinder assembly frame 7. The limiting pin 6 is connected to the corresponding hole in the gas cylinder assembly frame 7 through the limiting fixing plate 5. One end of the pre-assembled liquid outlet pipe is inserted into the corresponding positioning step hole 4, and the other end is connected and secured to the liquid outlet valve of the gas system. Plastic pipe clamps are used to fix the liquid outlet pipe to the gas cylinder assembly frame 7. Then, the limiting pin 6 is removed. This achieves precise and rapid positioning of the gas device's liquid outlet pipe, ensuring the consistency of the liquid outlet pipe size after assembly, improving positioning accuracy and work efficiency. It avoids difficulties in dimensional inspection and ensures that the assembled dimensions do not meet design requirements, while significantly improving product quality and consistency. It indirectly optimizes the operating procedure and improves production efficiency.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system, characterized in that, It includes a gas cylinder assembly frame (7), a positioning plate (1), a positioning step hole (4), and a liquid outlet pipe (8); The positioning plate (1) is detachably mounted on the gas cylinder assembly frame (7). The positioning plate (1) is provided with a plurality of positioning step holes (4). One end of the liquid outlet pipe (8) is connected to the liquid outlet valve of the vehicle liquefied natural gas gas system, and the other end is detachably inserted into the positioning step hole (4).

2. The positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system as described in claim 1, characterized in that, The positioning plate (1) has a bent structure.

3. The positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system as described in claim 2, characterized in that, The positioning step hole (4) is a cylindrical structure with a step hole.

4. The positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system as described in claim 3, characterized in that, It also includes a reinforcing plate (3), and the reinforcing plate (3) is also provided on the positioning plate (1).

5. The positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system as described in claim 2, characterized in that, It also includes a limiting fixing plate (5), the positioning plate (1) is connected to the limiting fixing plate (5), and the limiting fixing plate (5) is connected to the gas cylinder assembly frame (7) through a limiting pin (6).

6. The positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system as described in claim 5, characterized in that, It also includes stiffening plates (9); the positioning plate (1) is also provided with a plurality of the stiffening plates (9).

7. The positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system as described in claim 6, characterized in that, It also includes a handrail (2); the handrail (2) is also provided on the positioning plate (1).

8. The positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system as described in claim 7, characterized in that, The handrail (2) has a bent structure.

9. The positioning device for the outlet pipe of a vehicle liquefied natural gas fuel system as described in claim 8, characterized in that, The positioning plate (1), the limiting fixing plate (5), the handrail (2), and the reinforcing plate (9) are all made of stainless steel.

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