Liquefied natural gas (LNG) vehicle bottle liquid outlet pipeline

Abstract

The utility model provides an LNG (Liquefied Natural Gas) vehicle bottle liquid outlet pipeline which comprises a liquid outlet pipeline and a semiconductor gas sensor, the semiconductor gas sensor is arranged on the inner wall of the liquid outlet pipeline, a fixed frame is welded at the middle end of the surface of the liquid outlet pipeline, and a valve closing assembly is arranged at the top of the fixed frame. The valve closing assembly comprises a transmission box, a threaded rod, a sliding groove and a threaded sleeve. An inner cavity of a liquid outlet pipeline is monitored in real time through a semiconductor gas sensor, when gas leakage is detected, the semiconductor gas sensor transmits detection data to a central processing unit through a data transmission module, the central processing unit starts a servo motor through a control module, and the servo motor drives a threaded rod to rotate; the threaded rod drives the threaded sleeve to move downwards through the action of threads, the threaded sleeve drives the sealing baffle to move downwards through the connecting rod, the interior of the liquid outlet pipeline is sealed, leakage is avoided, and the overall safety is improved.

Description

Technical Field

[0001] The utility model relates to a liquid outlet pipeline of an LNG vehicle bottle and belongs to the technical field of LNG vehicle bottles. Background Art

[0002] LNG vehicle bottles, also known as vehicle liquefied natural gas storage tanks, refer to high-vacuum insulated containers for storing liquefied natural gas on vehicles. They are designed with a double-layer (vacuum) structure. The inner tank is used to store low-temperature liquid LNG. Multiple layers of insulation material are wrapped around its outer wall, which has superb thermal insulation performance. At the same time, the jacket (the space between the two layers of containers) is evacuated into a high vacuum to form a good insulation system. The design of the outer shell and support system can withstand the relevant external forces generated by the transport vehicle when it is driving. A liquid outlet pipe is required for transmission during the unloading process of the LNG vehicle bottle.

[0003] The liquid outlet pipe of the LNG vehicle bottle is prone to leakage due to vibration or external collision during use. Leakage may cause a variety of adverse effects. First, the leaked liquid natural gas may evaporate in the atmosphere to form a flammable gas cloud, thereby increasing the risk of explosion or fire. Secondly, the leakage may cause environmental pollution and affect the surrounding soil and water bodies. In addition, the leakage may also cause economic losses, because liquefied natural gas is a precious resource and any leakage will result in losses. Most importantly, the leakage may pose a safety threat to personnel and facilities, especially if the liquefied natural gas leaks into residential areas or near industrial facilities. Therefore, it is crucial to promptly detect and repair the leakage problem of the bottle outlet pipe to ensure the safety, environmental protection and economy of LNG vehicle transportation.

[0004] Therefore, a liquid outlet pipeline of an LNG vehicle bottle is proposed. Utility Model Content

[0005] In view of this, the utility model provides a liquid outlet pipeline for an LNG vehicle bottle to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0006] The technical solution of the utility model is implemented as follows: an LNG vehicle bottle liquid outlet pipeline, including a liquid outlet pipeline and a semiconductor gas sensor, the semiconductor gas sensor is arranged on the inner wall of the liquid outlet pipeline, a fixed frame is welded to the middle end of the surface of the liquid outlet pipeline, and a relevant valve assembly is arranged on the top of the fixed frame. The valve closing assembly includes a transmission box, a threaded rod, a slide groove, a threaded sleeve, a slide rod, a servo motor connecting rod and a sealing baffle, and the transmission box is fixedly connected to the top of the fixed frame.

[0007] Further preferably, the servo motor is fixedly connected to the top of the transmission box, the threaded rod is fixedly connected to the output end of the servo motor, the threaded sleeve is threadedly connected to the surface of the threaded rod, the connecting rod is welded to the right side of the threaded sleeve, the sealing baffle is welded to the right side of the connecting rod, and the bottom of the sealing baffle passes through the liquid outlet pipe.

[0008] Further preferably, the output end of the semiconductor gas sensor is electrically connected to a data transmission module, the output end of the data transmission module is electrically connected to a central processing unit, the output end of the central processing unit is electrically connected to a control module, and the control module is electrically connected to a servo motor.

[0009] Further preferably, the slide groove is opened on the front and rear sides of the inner cavity of the transmission box, the slide rod is welded to the front and rear sides of the threaded sleeve, and the outer side of the slide rod is slidably connected to the slide groove.

[0010] Further preferably, a limiting groove is provided on the right side of the transmission box, the right side of the connecting rod passes through the limiting groove and extends to the outside of the transmission box, and the outer wall of the connecting rod is tightly fitted with the limiting groove.

[0011] Further preferably, a sealing ring is provided on the right side of the top of the liquid outlet pipe, and the inside of the sealing ring is tightly fitted with the surface of the sealing baffle.

[0012] Further preferably, a flange is provided on the left side of the liquid outlet pipe, and a plurality of fastening screws are provided on the inner surface of the flange.

[0013] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0014] 1. The utility model uses a semiconductor gas sensor to monitor the inner cavity of the liquid outlet pipe in real time. When a gas leak is detected, the semiconductor gas sensor transmits the detection data to the central processing unit through the data transmission module. The central processing unit starts the servo motor through the control module. The servo motor drives the threaded rod to rotate. The threaded rod drives the threaded sleeve to move downward through the action of the thread. The threaded sleeve drives the sealing baffle to move downward through the connecting rod, thereby sealing the inside of the liquid outlet pipe to avoid leakage and improve overall safety.

[0015] 2. The utility model can limit the threaded sleeve by setting the sliding groove and the sliding rod to improve its stability during movement. By setting the limiting groove, the moving trajectory of the connecting rod can be limited to avoid its deviation during movement and then affect the position of the sealing baffle. By setting the flange and the fastening screws, the liquid outlet pipe can be easily connected to the LNG vehicle bottle.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional first-view structural schematic diagram of the utility model;

[0019] Figure 2 It is a three-dimensional second viewing angle structural schematic diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the valve closing assembly of the utility model;

[0021] Figure 4 This is a system schematic diagram of the utility model.

[0022] Figure numerals: 1. liquid outlet pipe; 2. fixed frame; 3. valve closing assembly; 301. transmission box; 302. threaded rod; 303. slide groove; 304. threaded sleeve; 305. slide rod; 306. servo motor; 307. connecting rod; 308. sealing baffle; 4. fastening screw; 5. flange; 6. limit groove; 7. sealing ring; 8. semiconductor gas sensor; 9. data transmission module; 10. central processing unit; 11. control module. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] like Figure 1-4As shown, the embodiment of the utility model provides an LNG vehicle bottle liquid outlet pipeline, including a liquid outlet pipeline 1 and a semiconductor gas sensor 8, the semiconductor gas sensor 8 is arranged on the inner wall of the liquid outlet pipeline 1, a fixed frame 2 is welded on the middle end of the surface of the liquid outlet pipeline 1, and a valve assembly 3 is arranged on the top of the fixed frame 2. The valve closing assembly 3 includes a transmission box 301, a threaded rod 302, a slide groove 303, a threaded sleeve 304, a slide rod 305, a servo motor 306, a connecting rod 307 and a sealing baffle 308. The transmission box 301 is fixedly connected to the top of the fixed frame 2, and the servo motor 306 is fixedly connected and arranged on the transmission box 3 01, the threaded rod 302 is fixedly connected to the output end of the servo motor 306, the threaded sleeve 304 is threadedly connected to the surface of the threaded rod 302, the connecting rod 307 is welded to the right side of the threaded sleeve 304, the sealing baffle 308 is welded to the right side of the connecting rod 307, and the bottom of the sealing baffle 308 penetrates into the liquid outlet pipe 1, the output end of the semiconductor gas sensor 8 is electrically connected to the data transmission module 9, the output end of the data transmission module 9 is electrically connected to the central processing unit 10, the output end of the central processing unit 10 is electrically connected to the control module 11, and the control module 11 is electrically connected to the servo motor 306.

[0027] The inner cavity of the liquid outlet pipe 1 is monitored in real time by the semiconductor gas sensor 8. When gas leakage is detected, the semiconductor gas sensor 8 transmits the detection data to the central processing unit 10 through the data transmission module 9. The central processing unit 10 starts the servo motor 306 through the control module 11. The servo motor 306 drives the threaded rod 302 to rotate. The threaded rod 302 drives the threaded sleeve 304 to move downward through the action of the thread. The threaded sleeve 304 drives the sealing baffle 308 to move downward through the connecting rod 307, so as to seal the interior of the liquid outlet pipe 1 to avoid leakage and improve the overall safety.

[0028] Example 2

[0029] In one embodiment, the slide groove 303 is opened on the front and rear sides of the inner cavity of the transmission box 301, the slide rod 305 is welded to the front and rear sides of the threaded sleeve 304, and the outer side of the slide rod 305 is slidably connected to the slide groove 303, a limiting groove 6 is opened on the right side of the transmission box 301, the right side of the connecting rod 307 passes through the limiting groove 6 and extends to the outside of the transmission box 301, and the outer wall of the connecting rod 307 is tightly fitted with the limiting groove 6, a sealing ring 7 is provided on the right side of the top of the liquid outlet pipe 1, and the inside of the sealing ring 7 is tightly fitted with the surface of the sealing baffle 308, a flange 5 is provided on the left side of the liquid outlet pipe 1, and a plurality of fastening screws 4 are provided on the inner surface of the flange 5.

[0030] By setting the slide groove 303 and the slide rod 305, the threaded sleeve 304 can be limited to improve its stability during movement. By setting the limit groove 6, the moving trajectory of the connecting rod 307 can be limited to avoid its deviation during movement and then affect the position of the sealing baffle 308. By setting the flange 5 and the fastening screw 4, the liquid outlet pipe 1 can be conveniently connected to the LNG vehicle bottle.

[0031] When the utility model is working: the inner cavity of the liquid outlet pipe 1 is monitored in real time through the semiconductor gas sensor 8. When gas leakage is detected, the semiconductor gas sensor 8 transmits the detection data to the central processing unit 10 through the data transmission module 9. The central processing unit 10 starts the servo motor 306 through the control module 11. The output end of the servo motor 306 drives the threaded rod 302 to rotate. During the rotation process, the threaded rod 302 drives the threaded sleeve 304 to move downward by the effect of the thread. The threaded sleeve 304 drives the connecting rod 307 to move downward. The connecting rod 307 drives the sealing baffle 308 to move downward. At this time, the outer side of the sealing baffle 308 is tightly fitted with the inner wall of the liquid outlet pipe 1, and the interior of the liquid outlet pipe 1 is sealed to avoid leakage, thereby improving the overall safety.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A liquid outlet pipeline for LNG vehicle bottles, characterized by: The invention comprises a liquid outlet pipe (1) and a semiconductor gas sensor (8), wherein the semiconductor gas sensor (8) is arranged on the inner wall of the liquid outlet pipe (1), a fixed frame (2) is welded to the middle end of the surface of the liquid outlet pipe (1), a valve assembly (3) is arranged on the top of the fixed frame (2), and the valve closing assembly (3) comprises a transmission box (301), a threaded rod (302), a slide groove (303), a threaded sleeve (304), a slide rod (305), a servo motor (306), a connecting rod (307) and a sealing baffle (308), and the transmission box (301) is fixedly connected to the top of the fixed frame (2).

2. The LNG vehicle bottle liquid outlet pipeline according to claim 1 is characterized in that: The servo motor (306) is fixedly connected to the top of the transmission box (301), the threaded rod (302) is fixedly connected to the output end of the servo motor (306), the threaded sleeve (304) is threadedly connected to the surface of the threaded rod (302), the connecting rod (307) is welded to the right side of the threaded sleeve (304), the sealing baffle (308) is welded to the right side of the connecting rod (307), and the bottom of the sealing baffle (308) penetrates into the liquid outlet pipe (1).

3. The LNG vehicle bottle liquid outlet pipeline according to claim 1 is characterized in that: The output end of the semiconductor gas sensor (8) is electrically connected to a data transmission module (9), the output end of the data transmission module (9) is electrically connected to a central processing unit (10), the output end of the central processing unit (10) is electrically connected to a control module (11), and the control module (11) is electrically connected to a servo motor (306).

4. The LNG vehicle bottle liquid outlet pipeline according to claim 1 is characterized in that: The slide groove (303) is formed at the front and rear sides of the inner cavity of the transmission box (301), the slide rod (305) is welded to the front and rear sides of the threaded sleeve (304), and the outer side of the slide rod (305) is slidably connected to the slide groove (303).

5. The LNG vehicle bottle liquid outlet pipeline according to claim 1 is characterized in that: The right side of the transmission box (301) is provided with a limiting groove (6), the right side of the connecting rod (307) passes through the limiting groove (6) and extends to the outside of the transmission box (301), and the outer wall of the connecting rod (307) is tightly fitted with the limiting groove (6).

6. The LNG vehicle bottle liquid outlet pipeline according to claim 1, characterized in that: A sealing ring (7) is provided on the right side of the top of the liquid outlet pipe (1), and the inside of the sealing ring (7) is tightly fitted to the surface of the sealing baffle (308).

7. The LNG vehicle bottle liquid outlet pipeline according to claim 1, characterized in that: A flange (5) is provided on the left side of the liquid outlet pipe (1), and a plurality of fastening screws (4) are provided on the inner surface of the flange (5).

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