Gas source control distributor for automotive LNG (Liquefied Natural Gas) supply system

Abstract

The utility model relates to the technical field of automotive LNG (Liquefied Natural Gas) supply systems, in particular to a gas source control distributor for an automotive LNG supply system, which comprises an outer pipe, a gas leakage detection alarm arranged in the outer pipe, an inner pipe arranged in the outer pipe, a through hole formed in the side wall of the inner pipe, a sealing ring arranged in the through hole, and a gas outlet arranged in the inner pipe. A branch pipe component is arranged on the side wall of the outer pipe and comprises a frame body, the frame body is fixedly installed on the outer side wall of the outer pipe, a branch pipe is movably connected to the interior of the frame body in a penetrating mode, one end of the branch pipe penetrates through the side wall of the outer pipe and the sealing ring to extend into the inner pipe, and a baffle ring is fixedly connected to the outer wall of the branch pipe. When the inner pipe is damaged, only the damaged inner pipe needs to be replaced independently, the maintenance cost is saved, the gas leakage detection alarm is used for detecting the outer pipe and the inner pipe, whether the inner pipe leaks or not can be found in time, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LNG supply systems for vehicles, in particular to a gas source control distributor for LNG supply systems for vehicles. Background Art

[0002] With the rapid development of the liquefied natural gas (LNG) industry in recent years, as a clean petrochemical energy, LNG has an increasingly broad terminal application field due to its convenient transportation, flexible use, and freedom from pipeline network constraints. The application of LNG in the transportation industry has the advantages of safety, environmental protection, long vehicle driving range, and obvious environmental and economic benefits. Against the backdrop of green environmental protection and energy conservation and emission reduction, the expectation of using LNG as a fuel for automobiles is getting higher and higher. The country actively promotes the implementation of energy conservation and emission reduction and gas-to-oil policies, which effectively promotes the use and development of natural gas as an alternative fuel for transportation. Against this background, LNG storage tanks for automobiles have broad development and use space.

[0003] The gas source control distributor is the intermediate bridge between the vehicle LNG storage tank and the vehicle body pipeline. It can provide gas source branches for the pneumatic equipment in the supporting vehicle body control system. However, the existing gas source control distributors are generally single-layer structures. When damaged, they need to be replaced as a whole, which is costly. In addition, they lack leak detection functions and have weak safety performance. Therefore, we propose a gas source control distributor for vehicle LNG supply systems to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a gas source control distributor for a vehicle LNG supply system.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a gas source control distributor for a vehicle LNG supply system, comprising an outer tube, a gas leak detection alarm installed inside the outer tube, an inner tube installed inside the outer tube, a through hole opened in the side wall of the inner tube, a sealing ring provided inside the through hole, a branch pipe component provided on the side wall of the outer tube, the branch pipe component comprising a frame, the frame being fixedly mounted on the outer side wall of the outer tube, a branch pipe being movably connected through the interior of the frame, one end of the branch pipe respectively passing through the side wall of the outer tube and the sealing ring and extending to the interior of the inner tube, a retaining ring being fixedly connected to the outer wall of the branch pipe, a spring being sleeved on the outer wall of the branch pipe, and both ends of the spring being fixedly connected to one side wall of the retaining ring and the inner side wall of the frame respectively.

[0006] further:

[0007] A sub-valve is provided inside the branch pipe, and a handle is fixedly connected to the outer wall of the branch pipe.

[0008] further:

[0009] There are multiple through holes, sealing rings and branch pipe components.

[0010] further:

[0011] The inner wall of the outer tube is fixedly connected to a limiting ring, and the left end of the inner tube is in contact with the right side wall of the limiting ring.

[0012] further:

[0013] The outer wall of the right end of the outer tube is threadedly connected with an end cover, and the inner side wall of the end cover is fitted with the right end of the inner tube.

[0014] further:

[0015] The left end of the outer tube is fixedly connected with a flange, a threaded hole is penetrated through the interior of the flange, and a main valve is provided at the left end of the outer tube.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the existing technology, this vehicle-used LNG supply system uses a gas source control distributor. Through the outer tube, inner tube and gas leakage detection alarm, the gas leakage detection alarm can detect the space between the outer tube and the inner tube. When leaked LNG is detected, an alarm will be sounded to remind people that the inner tube needs to be replaced and repaired, thereby improving safety during use. Compared with the existing device which is generally a single-layer structure and needs to be replaced as a whole when damaged, the cost is high, and it lacks a leak detection function and has weak safety performance, this device not only has a double-layer structure, but only needs to replace the damaged inner tube separately, saving maintenance costs, and uses the gas leakage detection alarm to detect between the outer tube and the inner tube, so as to timely detect whether there is leakage in the inner tube, thereby improving safety in use.

[0018] 2. Compared with the existing technology, this gas source control distributor for the vehicle LNG supply system, through the branch pipe components set up, when disassembling the inner tube, first unscrew the end cover from the outer wall of the outer tube, and then pull the multiple branch pipes outward through multiple handles at the same time, so that the ends of the multiple branch pipes are moved out from the inside of the multiple sealing rings. During this process, the retaining ring will squeeze the spring, and then the inner tube is moved out from the right end of the outer tube to complete the disassembly. This device can not only connect the multiple branch pipes with the inner tube, thereby branching the gas source of the inner tube, but also facilitate the rapid replacement of the inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2This is a schematic diagram of the structure of the sub-assembly components of the present utility model;

[0021] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a cross-sectional view of the outer tube and inner tube structure of the utility model.

[0023] Legend:

[0024] 100. Outer tube; 110. Gas leak detection alarm; 120. Limiting ring; 130. End cover; 140. Flange; 150. Threaded hole; 160. Main valve; 200. Inner tube; 210. Through hole; 220. Sealing ring; 300. Branch component; 310. Frame; 320. Branch pipe; 330. Retaining ring; 340. Spring; 350. Sub-valve; 360. Handle. DETAILED DESCRIPTION

[0025] Reference Figure 1-4 The utility model provides a gas source control distributor for a vehicle LNG supply system, which includes an outer tube 100, an inner tube 200 and a branching component 300.

[0026] The outer tube 100 is used to protect the inner tube 200. Specifically, a gas leak detection alarm 110 is installed inside the outer tube 100. The inner wall of the outer tube 100 is fixedly connected to a limit ring 120. The left end of the inner tube 200 fits with the right side wall of the limit ring 120. The outer wall of the right end of the outer tube 100 is threadedly connected to an end cover 130. The inner side wall of the end cover 130 fits with the right end of the inner tube 200. The left end of the outer tube 100 is fixedly connected to a flange 140. A threaded hole 150 is opened inside the flange 140. A main valve 160 is provided at the left end of the outer tube 100. When in use, the main valve 160 is penetrated by bolts. The threaded hole 150 is passed through to connect the flange 140 to the outlet pipe of the vehicle LNG storage tank. The gas leakage detection alarm 110 can detect the space between the outer tube 100 and the inner tube 200. When leaked LNG is detected, an alarm will be sounded to remind people that the inner tube 200 needs to be replaced and repaired, thereby improving safety during use. The limit ring 120 is used to limit and support the left end of the inner tube 200. The end cover 130 is used to cooperate with the limit ring 120 to fix the inner tube 200 inside the outer tube 100. The main valve 160 is used to control the switch of the outer tube 100 and the vehicle LNG storage tank.

[0027] The inner tube 200 is used to distribute LNG to multiple branch pipes 320. Specifically, the inner tube 200 is installed inside the outer tube 100. The side wall of the inner tube 200 is provided with a through hole 210. The interior of the through hole 210 is provided with a sealing ring 220. During specific use, the through hole 210 is used to allow the branch pipes 320 and the inner tube 200 to communicate with each other, and the sealing ring 220 is used to ensure the sealing between the branch pipes 320 and the through hole 210.

[0028] The branch pipe component 300 can distribute the vehicle LNG storage tank through multiple branch pipes 320. Specifically, the branch pipe component 300 includes a frame 310, which is fixedly installed on the outer wall of the outer tube 100. The frame 310 is internally connected with a branch pipe 320, one end of the branch pipe 320 respectively penetrates the side wall of the outer tube 100 and the sealing ring 220 and extends to the interior of the inner tube 200. The outer wall of the branch pipe 320 is fixedly connected with a retaining ring 330, and the outer wall of the branch pipe 320 is provided with a spring 340. The two ends of the spring 340 are respectively fixedly connected to one side wall of the retaining ring 330 and the inner wall of the frame 310. A sub-valve 350 is provided inside 20, and a handle 360 is fixedly connected to the outer wall of the branch pipe 320. There are multiple through holes 210, sealing rings 220 and branch pipe components 300. During specific use, when disassembling the inner tube 200, first unscrew the end cover 130 from the outer wall of the outer tube 100, and then pull the multiple branch pipes 320 outward through multiple handles 360 at the same time, so that the ends of the multiple branch pipes 320 are moved out from the inside of the multiple sealing rings 220. During this process, the retaining ring 330 will squeeze the spring 340, and then the inner tube 200 is moved out from the right end of the outer tube 100 to complete the disassembly.

[0029] Working principle: During specific use, the gas leakage detection alarm 110 can detect the space between the outer tube 100 and the inner tube 200. When leaked LNG is detected, an alarm will be sounded to remind people that the inner tube 200 needs to be replaced and repaired, thereby improving safety during use. When disassembling the inner tube 200, first unscrew the end cover 130 from the outer wall of the outer tube 100, and then pull the multiple branch tubes 320 outward through multiple handles 360 at the same time, so that the ends of the multiple branch tubes 320 are moved out from the inside of the multiple sealing rings 220. During this process, the retaining ring 330 will squeeze the spring 340, and then the inner tube 200 is moved out from the right end of the outer tube 100 to complete the disassembly.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas source control distributor for a vehicle LNG supply system, comprising an outer tube (100), characterized in that: A gas leak detection alarm (110) is installed inside the outer tube (100), an inner tube (200) is installed inside the outer tube (100), a through hole (210) is opened on the side wall of the inner tube (200), a sealing ring (220) is provided inside the through hole (210), a branch pipe component (300) is provided on the side wall of the outer tube (100), the branch pipe component (300) includes a frame (310), and the frame (310) is fixedly installed on the outer side of the outer tube (100). The frame (310) has a side wall, and a branch pipe (320) is movably connected to the inside of the frame (310). One end of the branch pipe (320) respectively penetrates the side wall of the outer tube (100) and the sealing ring (220) and extends to the inside of the inner tube (200). The outer wall of the branch pipe (320) is fixedly connected to a retaining ring (330). The outer wall of the branch pipe (320) is provided with a spring (340). The two ends of the spring (340) are respectively fixedly connected to a side wall of the retaining ring (330) and the inner wall of the frame (310).

2. The gas source control distributor for a vehicle LNG supply system according to claim 1, characterized in that: A sub-valve (350) is provided inside the branch pipe (320), and a handle (360) is fixedly connected to the outer wall of the branch pipe (320).

3. The gas source control distributor for a vehicle LNG supply system according to claim 1, characterized in that: The through holes (210), the sealing rings (220) and the branch pipe components (300) are all in plurality.

4. The gas source control distributor for a vehicle LNG supply system according to claim 1, characterized in that: The inner wall of the outer tube (100) is fixedly connected to a limiting ring (120), and the left end of the inner tube (200) is in contact with the right side wall of the limiting ring (120).

5. The gas source control distributor for a vehicle LNG supply system according to claim 1, characterized in that: The outer wall of the right end of the outer tube (100) is threadedly connected to an end cover (130), and the inner side wall of the end cover (130) is in contact with the right end of the inner tube (200).

6. The gas source control distributor for a vehicle LNG supply system according to claim 1, characterized in that: The left end of the outer tube (100) is fixedly connected to a flange (140), a threaded hole (150) is provided through the interior of the flange (140), and a main valve (160) is provided at the left end of the outer tube (100).

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