CN210398374U

CN210398374U - CNG gas station gas filling system

Info

Publication number: CN210398374U
Application number: CN201921045733.1U
Authority: CN
Inventors: 夏宝明
Original assignee: Wuhu Zhongran Urban Gas Development Co ltd
Current assignee: Wuhu Zhongran Urban Gas Development Co ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-04-24
Anticipated expiration: 2029-07-05

Abstract

The utility model discloses a CNG gas station gas filling system, including inner tank and outer jar, the inner tank with the welding has the sealing washer between the outer jar, the sealing washer below is equipped with the seal chamber, the welding has first gas transmission pipeline on the inner tank, first gas transmission pipeline bottom is connected with second gas transmission pipeline, second gas transmission pipeline front end is connected with the inflation head, the inflation head with but second gas transmission pipeline telescopic connection, be equipped with first check valve on the first gas transmission pipeline, be equipped with the second check valve on the inflation head, the spiral mounting has combustible gas test probe on the seal chamber inner wall, the spiral mounting has combustible gas test display on the outer jar lateral wall. The utility model adds a second one-way valve on the inflation head to prevent the leakage of natural gas when the gun head is replaced; meanwhile, a part of hoses are replaced by hard pipes, the use of the conveying pipeline is not influenced, the maintenance cost of the hoses is reduced, and the cost is lower than that of the hard pipes which are used completely.

Description

CNG gas station gas filling system

Technical Field

The utility model relates to a CNG gas filling system specifically is a CNG gas station gas filling system, belongs to CNG gas filling system application.

Background

CNG, i.e., compressed natural gas, is natural gas that is pressurized and stored in a gaseous state in a container. Natural gas is widely used in various industries due to the advantages of high combustion rate and low pollution, and the environmental and air pollution is increasingly severe at present, so that the environmental awareness of people is gradually strengthened, and the use progress of the natural gas by motor vehicles is accelerated. As far as the current state of the art is concerned, the chinese natural gas industry is rapidly developing, but it is still a young industry, and there is still a great gap in the mature market for other natural gases.

At present, an inflation head for inflating natural gas is communicated with a conveying pipeline, so that the natural gas in the conveying pipeline is inevitably leaked in the process of replacing the inflation head, and the energy is wasted; in addition, the hose is widely used in the natural gas filling process due to low use cost, but the service life of the hose is short, and the hose needs to be replaced once in two years, so that the maintenance cost of the hose is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a CNG gas station gas filling system for solving above-mentioned problem.

The utility model realizes the above purpose by the following technical proposal, a CNG gas station gas filling system comprises an inner tank and an outer tank, a sealing ring is welded between the inner tank and the outer tank, a sealing chamber is arranged below the sealing ring, a first gas pipeline is welded on the inner tank and is positioned above the sealing ring, the first gas pipeline runs through the sealing ring and extends into the sealing chamber, the bottom of the first gas pipeline is connected with a second gas pipeline, the front end of the second gas pipeline is connected with an inflation head, the inflation head runs through the inner tank and extends out of the inner tank, the inflation head is telescopically connected with the second gas pipeline, a first one-way valve is arranged on the first gas pipeline, a second one-way valve is arranged on the inflation head, and a combustible gas detection probe is spirally fixed on the inner wall of the sealing chamber, and a combustible gas detection display is spirally fixed on the side wall of the outer tank and is connected with the combustible gas detection probe.

Preferably, the combustible gas detection probe is of an infrared optical type, the minimum detection concentration of the combustible gas detection probe is 500ppm, and the combustible gas detection display is powered by a storage battery.

Preferably, the sealing ring is provided with an inner tank through hole, the inner tank penetrates through the inner tank through hole, the inner tank and the inner tank through hole are welded and sealed, the surface of the sealing ring is provided with a first gas transmission pipeline limiting groove, the bottom of the first gas transmission pipeline limiting groove is provided with a first gas transmission pipeline through hole, the first gas transmission pipeline is of an L-shaped structure, the first check valve is arranged at the parallel end of the first gas transmission pipeline, the parallel end of the first gas transmission pipeline is embedded in the first gas transmission pipeline limiting groove, the vertical end of the first gas transmission pipeline penetrates through the first gas transmission pipeline through hole and extends into the sealing chamber, the vertical end of the first gas transmission pipeline and the first gas transmission pipeline through hole are welded and sealed, the side wall of the outer tank is provided with a valve through groove, the first check valve is opposite to the valve through groove, and the first check valve is provided with a valve adjusting rod, the valve adjusting rod penetrates through the valve through groove and extends out of the outer tank.

Preferably, the second gas transmission pipeline includes preceding communicating pipe, hose and back communicating pipe, back communicating pipe with welding of first gas transmission pipeline bottom, preceding communicating pipe one end welding inflate overhead, the other end with the hose welding, the hose rear end with back communicating pipe front end sealing connection, be equipped with the through-hole on the outer jar lateral wall, back communicating pipe front end welding is in the through-hole periphery, it fixes to inflate the head spiral on the through-hole.

Preferably, the front communicating pipe and the rear communicating pipe are made of stainless steel materials, the hose is made of a flexible rubber pipe, the hose is of a structure with a thin front part and a thick rear part, the thick opening end of the hose is welded to the inner wall of the rear communicating pipe, the thin opening end of the hose is welded to the inner wall of the front communicating pipe, and the length of the hose is the same as that of the rear communicating pipe.

The utility model has the advantages that: the utility model discloses a gas filling system of a CNG gas filling station, wherein a second one-way valve is additionally arranged on a gas filling head to prevent the leakage of natural gas when the gun head is replaced; meanwhile, a part of hoses are replaced by hard pipes, the use of the conveying pipeline is not influenced, the maintenance cost of the hoses is reduced, and the cost is lower than that of the hard pipes which are used completely.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is the schematic diagram of the internal structure of the outer tank of the present invention.

Fig. 3 is a schematic view of a second gas transmission pipeline structure of the present invention.

Fig. 4 is the schematic diagram of the cross-sectional structure of the outer tank of the present invention.

In the figure: 1. inner tank, 2, outer tank, 3, sealing washer, 4, seal chamber, 5, first gas transmission pipeline, 6, second gas transmission pipeline, 7, aerify the head, 8, first check valve, 9, second check valve, 10, combustible gas test probe, 11, combustible gas detection display, 12, inner tank perforation, 13, valve logical groove, 14, first gas transmission pipeline spacing groove, 15, first gas transmission pipeline perforation, 16, through-hole, 17, preceding communicating pipe, 18, hose, 19, back communicating pipe, 20, valve adjusting lever.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner" and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, a gas filling system of a CNG gas station includes an inner tank 1 and an outer tank 2, a sealing ring 3 is welded between the inner tank 1 and the outer tank 2, a sealing chamber 4 is arranged below the sealing ring 3, a first gas transmission pipeline 5 is welded on the inner tank 1, the first gas transmission pipeline 5 is located above the sealing ring 3, the first gas transmission pipeline 5 penetrates through the sealing ring 3 and extends into the sealing chamber 4, a second gas transmission pipeline 6 is connected to the bottom of the first gas transmission pipeline 5, an inflation head 7 is connected to the front end of the second gas transmission pipeline 6, the inflation head 7 penetrates through the inner tank 1 and extends out of the inner tank 1, the inflation head 7 is telescopically connected to the second gas transmission pipeline 6, a first one-way valve 8 is arranged on the first gas transmission pipeline 5, a second one-way valve 9 is arranged on the inflation head 7, a flammable gas detection probe 10 is spirally fixed on the inner wall of the sealing chamber 4, a combustible gas detection display 11 is spirally fixed on the side wall of the outer tank 2, and the combustible gas detection display 11 is connected with the combustible gas detection probe 10.

The combustible gas detection probe 10 is of an infrared optical type, the minimum detection concentration of the combustible gas detection probe 10 is 500ppm, and the combustible gas detection display 11 is powered by a storage battery.

If the second gas transmission pipeline 6 has natural gas leakage, when the leakage amount reaches 500ppm, the combustible gas detection probe 10 can detect the leakage amount and the leakage amount is displayed by the combustible gas detection display 11 to remind a worker to replace the second gas transmission pipeline 6 in time.

An inner tank through hole 12 is formed in the sealing ring 3, the inner tank 1 penetrates through the inner tank through hole 12, the inner tank 1 and the inner tank through hole 12 are welded and sealed, a first gas transmission pipeline limiting groove 14 is formed in the surface of the sealing ring 3, a first gas transmission pipeline through hole 15 is formed in the bottom of the first gas transmission pipeline limiting groove 14, the first gas transmission pipeline 5 is of an L-shaped structure, the first check valve 8 is arranged at the parallel end of the first gas transmission pipeline 5, the parallel end of the first gas transmission pipeline 5 is embedded in the first gas transmission pipeline limiting groove 14, the vertical end of the first gas transmission pipeline 5 penetrates through the first gas transmission pipeline through hole 15 and extends into the sealing chamber 4, the vertical end of the first gas transmission pipeline 5 and the first gas transmission pipeline through hole 15 are welded and sealed, a valve through groove 13 is formed in the side wall of the outer tank 2, the first check valve 8 is opposite to the valve through groove 13, the first check valve 8 is provided with a valve adjusting rod 20, and the valve adjusting rod 20 penetrates through the valve through groove 13 and extends out of the outer tank 2.

The opening and closing of the first check valve 8 is controlled by a valve adjusting rod 20.

Second gas transmission pipeline 6 is including preceding communicating pipe 17, hose 18 and back communicating pipe 19, back communicating pipe 19 with 5 bottom welding of first gas transmission pipeline, preceding communicating pipe 17 one end welding is in on the inflation head 7, the other end with hose 18 welding, 18 rear ends of hose with 19 front end sealing connection of back communicating pipe, be equipped with through-hole 16 on the outer jar 2 lateral wall, 19 front end welding of back communicating pipe in the 16 periphery of through-hole, inflation head 7 spiral fastening is in on the through-hole 16.

The front communicating pipe 17 and the rear communicating pipe 19 are made of stainless steel materials, the hose 18 is made of a soft rubber pipe material, the hose 18 is of a structure with a thin front part and a thick rear part, the thick end of the hose 18 is welded on the inner wall of the rear communicating pipe 19, the thin end of the hose 18 is welded on the inner wall of the front communicating pipe 17, and the length of the hose 18 is the same as that of the rear communicating pipe 19.

The inflating head 7 is detached from the through hole 16 and stretched forwards, the hose 18 can play a role in prolonging the whole second gas transmission pipeline 6, the second one-way valve 9 is opened after the first one-way valve 8 is opened, and natural gas can be transmitted; after the inflation is finished, the second one-way valve 9 is closed, the inflation head 7 is fixed on the through hole 16 in a spiral mode, the hose 18 is plugged back into the rear communicating pipe 19 by external force, the length of the whole second gas transmission pipeline 6 is shortened, the capacity of natural gas staying in the second gas transmission pipeline 6 is reduced, and then the first one-way valve 8 is closed.

Because the capacity of the natural gas retained in the second gas transmission pipeline 6 is reduced, the waste of energy in the pipeline is reduced when the second gas transmission pipeline 6 is replaced; meanwhile, under the condition that the pipeline is damaged, the natural gas leakage capacity is greatly reduced, and the purpose of saving energy can be achieved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a CNG gas station gas filling system, includes inner tank (1) and outer jar (2), its characterized in that: the inner tank (1) and the outer tank (2) are welded with a sealing ring (3), a sealing chamber (4) is arranged below the sealing ring (3), a first gas pipeline (5) is welded on the inner tank (1), the first gas pipeline (5) is positioned above the sealing ring (3), the first gas pipeline (5) penetrates through the sealing ring (3) and extends into the sealing chamber (4), a second gas pipeline (6) is connected to the bottom of the first gas pipeline (5), an inflation head (7) is connected to the front end of the second gas pipeline (6), the inflation head (7) penetrates through the inner tank (1) and extends out of the inner tank (1), the inflation head (7) is in telescopic connection with the second gas pipeline (6), a first one-way valve (8) is arranged on the first gas pipeline (5), a second one-way valve (9) is arranged on the inflation head (7), a combustible gas detection probe (10) is spirally fixed on the inner wall of the sealing chamber (4), a combustible gas detection display (11) is spirally fixed on the side wall of the outer tank (2), and the combustible gas detection display (11) is connected with the combustible gas detection probe (10).

2. The gas station filling system of CNG according to claim 1, wherein: the combustible gas detection probe (10) is of an infrared optical type, the minimum detection concentration of the combustible gas detection probe (10) is 500ppm, and the combustible gas detection display (11) is powered by a storage battery.

3. The gas station filling system of CNG according to claim 1, wherein: the inner tank perforation (12) is arranged on the sealing ring (3), the inner tank (1) penetrates through the inner tank perforation (12), the inner tank (1) and the inner tank perforation (12) are welded and sealed, a first gas transmission pipeline limiting groove (14) is arranged on the surface of the sealing ring (3), a first gas transmission pipeline perforation (15) is arranged at the bottom of the first gas transmission pipeline limiting groove (14), the first gas transmission pipeline (5) is of an L-shaped structure, a first check valve (8) is arranged on the parallel end of the first gas transmission pipeline (5), the parallel end of the first gas transmission pipeline (5) is embedded in the first gas transmission pipeline limiting groove (14), the vertical end of the first gas transmission pipeline (5) penetrates through the first gas transmission pipeline perforation (15) and extends into the sealing chamber (4), and the vertical end of the first gas transmission pipeline (5) and the first gas transmission pipeline perforation (15) are welded and sealed, the outer tank (2) is provided with a valve through groove (13) in the side wall, the first check valve (8) is opposite to the valve through groove (13), the first check valve (8) is provided with a valve adjusting rod (20), and the valve adjusting rod (20) penetrates through the valve through groove (13) and extends out of the outer tank (2).

4. The gas station filling system of CNG according to claim 1, wherein: second gas transmission pipeline (6) are including preceding communicating pipe (17), hose (18) and back communicating pipe (19), back communicating pipe (19) with welding of first gas transmission pipeline (5) bottom, preceding communicating pipe (17) one end welding aerify on head (7), the other end with hose (18) welding, hose (18) rear end with back communicating pipe (19) front end sealing connection, be equipped with on outer jar (2) lateral wall through-hole (16), back communicating pipe (19) front end welding is in through-hole (16) periphery, it fixes to aerify head (7) spiral on through-hole (16).

5. The CNG gas station gas filling system of claim 4, wherein: preceding communicating pipe (17) with back communicating pipe (19) are stainless steel, hose (18) are flexible glue pipe material, hose (18) are thick structure after thin in the front, hose (18) wide-mouthed end welding is in on back communicating pipe (19) inner wall, hose (18) narrow-mouthed end welding is in on preceding communicating pipe (17) inner wall, the length of hose (18) with the length of back communicating pipe (19) is the same.