KR20170000967U - Gas charging device for CNG charger - Google Patents

Gas charging device for CNG charger Download PDF

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Publication number
KR20170000967U
KR20170000967U KR2020150005942U KR20150005942U KR20170000967U KR 20170000967 U KR20170000967 U KR 20170000967U KR 2020150005942 U KR2020150005942 U KR 2020150005942U KR 20150005942 U KR20150005942 U KR 20150005942U KR 20170000967 U KR20170000967 U KR 20170000967U
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KR
South Korea
Prior art keywords
valve
gas
union
vent
cng
Prior art date
Application number
KR2020150005942U
Other languages
Korean (ko)
Inventor
이종화
손갑용
이원석
서성혁
오세명
Original Assignee
주식회사 경동도시가스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 주식회사 경동도시가스 filed Critical 주식회사 경동도시가스
Priority to KR2020150005942U priority Critical patent/KR20170000967U/en
Publication of KR20170000967U publication Critical patent/KR20170000967U/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/037—Quick connecting means, e.g. couplings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/041—Methods for emptying or filling vessel by vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/06—Fluid distribution
    • F17C2265/065—Fluid distribution for refueling vehicle fuel tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F17C2270/0178—Cars

Abstract

The present invention relates to a gas injection device for a compressed natural gas (CNG) charging device, comprising: an opening / closing valve provided on a gas supply line; A union tee having first, second and third connection ports, the first connection port being connected to the gas supply line; A charging nozzle connected to a second connection port of the union teat, the charging nozzle being connectable to and detachable from a receptacle of the vehicle for gas filling; A vent line connected to a third connection port of the union teat; And a vent valve that is provided on the vent line to open and close the vent line, thereby simplifying the overall nozzle configuration, improving the economy and durability, and facilitating maintenance.

Figure P2020150005942

Description

[0001] Gas injection device for CNG charger [0002]

The present invention relates to a charging device for charging a compressed natural gas (CNG) into an automobile, and more particularly to a gas injection device for a compressed natural gas charger capable of connecting and disconnecting a fuel supply hose to a receptacle of a vehicle.

Efforts to develop alternative energy for petroleum energy, one of the fossil fuels, have been actively made in various fields. This is to prepare for the depletion of petroleum resources and to address the more serious problem of environmental pollution that is becoming increasingly global.

In the case of automobiles, which are recognized as the main cause of urban air pollution, realization of low pollution is becoming a pressing issue for all automobile manufacturers and parts companies. As a result, much research and development has been made on the development of automobiles that use alternative energy that can significantly reduce harmful emissions compared to gasoline or diesel fuel.

As a part of this, research and development on CNG vehicles using CNG (Compressed natural gas) as a fuel is being actively carried out, CNG is more efficient than gasoline, This is because it has a small and economical advantage.

Because of these advantages, CNG buses, which are used as CNG fuel in Korea since 1999, have been popularized and are being exercised.

CNG is a gas converted into compressed gas of 25Mpa to use natural gas (NG) as vehicle fuel. Since CNG is charged in the car with super high pressure, CNG charging facility (charging station) .

The CNG filling station is usually made through a gas injector connected to a charger dispenser that supplies CNG. That is, the gas injecting apparatus has a roughly an injected gun structure. By injecting CNG by connecting such a gas injecting apparatus to a receptacle, which is an injecting apparatus of a vehicle, it becomes possible to fill the fuel tank of the vehicle with CNG.

The gas injection device is constituted by mutually assembling an opening / closing valve for opening and closing a gas supply line, a filling nozzle coupled to a receptacle on a vehicle side, and the like.

However, the conventional gas injecting apparatus has a complicated overall structure and a large number of parts, resulting in poor economical efficiency and durability, and maintenance and repair during use is also difficult.

Generally, a gas injector of a CNG charger needs to be repeatedly connected and disconnected from a receptacle of a vehicle for CNG charging. However, when the gas injector is used for a long time, durability is poor and troubles such as disconnection during charging, delay in charging speed, In addition, the number of components is large, and maintenance work is also difficult.

KR Patent No. 10-0923645 KR registered utility model 20-0470764

It is an object of the present invention to provide a gas injection apparatus for a compressed natural gas filling machine which can simplify the overall nozzle configuration and improve the economical efficiency and durability and can be easily maintained .

In addition, the present invention provides a gas injection device for a compressed natural gas charger that can improve the stability of the gas filling and the charging performance by configuring the vent line, the check valve, the counter device, etc., There are other purposes to do this.

According to an aspect of the present invention, there is provided a gas injection device for a compressed natural gas filling machine, comprising: an opening / closing valve provided on a gas supply line; A union tee having first, second and third connection ports, the first connection port being connected to the gas supply line; A charging nozzle connected to a second connection port of the union teat, the charging nozzle being connectable to and detachable from a receptacle of the vehicle for gas filling; A vent line connected to a third connection port of the union teat; And a vent valve provided on the vent line for opening and closing the vent line.

And a check valve for preventing the backflow is formed between the end of the gas supply line and the first connection port of the union tank in front of the on-off valve.

The on-off valve may further include a counter switch for indicating the number of times the valve is opened and closed.

A connecting connector or an elbow may be respectively connected to the connecting portions between the first, second, and third connecting ports of the union tee and the check valve, the filling nozzle, and the vent line.

The above and other objects and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings, in which: FIG. In addition to the main task solutions as described above, various task solutions according to the present invention will be further illustrated and described.

The gas injection device for a compressed natural gas filling machine according to the present invention minimizes the number of components as a whole and simplifies the structure, thereby improving the economical efficiency and durability of the device and providing an effect of facilitating maintenance.

Further, since the vent line and the vent valve are constituted, the present invention has the effect of enabling stable gas filling and separation operations.

In addition, the present invention can improve the stability of the charging of the gas and improve the charging performance by preventing the reverse flow to the charging facility during the gas filling and checking the replacement period of the valve easily when the check valve, And the like.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a gas injection apparatus of a compressed natural gas filling apparatus according to an embodiment of the present invention; FIG.
2 is a cross-sectional view of an open / close valve constructed in a gas injection device of a compressed natural gas filling machine according to an embodiment of the present invention.
3 is a cross-sectional view of a vent valve constructed in a gas injection device of a compressed natural gas filling machine according to an embodiment of the present invention.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a view showing a gas injecting apparatus for a compressed natural gas filling apparatus according to an embodiment of the present invention, and FIGS. 2 and 3 are diagrams showing a configuration of a gas injecting apparatus for a compressed natural gas filling apparatus according to an embodiment of the present invention Closing valves and vent valves are shown in the sectional views.

Referring to FIG. 1, a gas injection device for a compressed natural gas filling apparatus according to an embodiment of the present invention includes an opening / closing valve 20 provided on a gas supply line 10, A check valve 30 connected to an end of the gas supply line 10, a union tank 40 connected to the check valve 30, A vent line 60 connected to the unity tee 40 and a vent line 60 provided on the vent line 60. The charging nozzle 50 is connected to the receptacle R, And a vent valve 70 for opening and closing the vent valve 70.

The main constituent parts of the gas injecting apparatus constructed as described above will be described in detail as follows.

First, the gas supply line 10 is preferably a high-pressure tubing pipe made of SUS material or the like, to which a high-pressure filling gas is supplied.

In addition, the vent line 60 is also preferably comprised of high-pressure tubing. However, the inner diameter of the vent line 60 is preferably smaller than the inner diameter of the gas supply line 10.

2, the opening / closing valve 20 may have a structure similar to that of a known ball valve, and includes a valve body 21 formed with a gas path connected to the gas supply line 10, And a lever shaft 24 which is provided inside the valve body 21 and opens and closes the gas path 21a and a lever 23 for opening and closing the valve by rotating the valve ball 25 .

Here, it is preferable that a hole communicating with the gas path 21a of the valve body 21 is formed in the valve ball 25. [

Referring to FIG. 1, the on / off valve 20 may further include a counter switch 26 for indicating the number of times the valve is opened or closed so that a replacement time or the like can be determined.

The counter switch 26 may be configured to sense the movement of the lever 23 when the lever 23 is rotated to notify the user of the number of times the valve is opened and closed. The counter switch 26 may be integrally formed with the open / close valve 20, (23) or a separate type which can detect the rotation of the valve ball and can be confirmed from the outside of the gas injection apparatus by an electrical signal output.

When the open / close valve 20 is integrally formed, a display window may be provided on the side surface of the opening / closing valve 20 as shown in FIG. 1, and the number of times of opening and closing may be digitally displayed on the display window. Of course, the lever 23 or the lever shaft 24 is preferably provided with a sensor for detecting the open / closed state of the lever 23, and a converter for converting a signal input from the sensor into a digital signal . Since the counter switch 26 by sensing is widely known, detailed description and explanation thereof are omitted.

It is also possible to apply the manual counting method instead of the automatic counting method by sensing. In other words, it is also possible to constitute a method in which the operator directly presses the counter button at the time of operating the on-off valve 20. [

Therefore, when the number of counters becomes equal to or more than a certain level, it is recognized that the nozzle is replaced, and when the gas injecting apparatus is entirely replaced or a part of the components is replaced, a performance such as a safety accident such as gas leakage, It is possible to prevent degradation.

Next, the check valve 30 prevents the high-pressure gas from flowing backward due to abnormal pressure rise in the storage container of the vehicle and a check valve function provided on the vehicle side to prevent safety accidents from occurring in the charging equipment connected to the gas injection device A shutoff plate or the like for shutting off the pipeline is provided therein so as to be opened when the high pressure gas is supplied and to be able to shut off when the reverse flow is made on the opposite side. This check valve 30 is also well known and can be constructed by selecting one of known check valves 30 such as a disk type or a swing type.

The check valve 30 may be constructed by deleting the gas injection device of the compressed natural gas filling machine according to the embodiment of the present invention, depending on the conditions of operation. At this time, the gas supply line 10 of the opening / closing valve 20 is directly connected to the union tea 40.

Next, the union tea 40 is a tube connection port for branching the duct, and first, second and third connection ports are formed in the T-shaped structure.

The check valve 30 is connected to the first connection port of the union tea 40, the filling nozzle 50 is connected to the second connection port, and the vent line 60 is connected to the third connection port.

It is preferable that the connection connectors 16 are assembled and connected to the connection portions between the first, second and third connection ports of the union tea 40 and the check valve 30 and the filling nozzle 50, respectively.

Next, the filling nozzle 50 is a constituent part connected to the receptacle R, which is a gas injection port of the vehicle, and the tip end thereof is configured to be able to be engaged with and separated from the receptacle R, It is preferable that the backflow prevention structure is provided. It is preferable that the backflow prevention structure is constituted by introducing the configuration of the check valve.

The vent line 60 is a pipe for safely discharging the gas remaining in the nozzle before the filling nozzle 50 is separated from the receptacle R after the gas filling operation is completed as described above, ) To discharge the internal gas.

The vent line 60 may be configured to discharge gas into the atmosphere, or may be configured to store gas in a separate vent gas storage container.

Reference numeral 65 in Fig. 1 denotes an elbow for connecting the vent line 60 and 66 and 67 denote connecting connectors connecting the vent line 60 and the elbow 65 and the vent valve 70, respectively.

Referring to FIG. 3, the vent valve 70 may include a valve body 71 having a gas path 71a formed thereon, and a control valve And a valve stem 75 connected to the inside of the valve body 71 at the knob 73 to open and close the gas passage 71a through the valve stage 76 while rotating together with the rotation of the knob .

The use of the gas injection apparatus of the compressed natural gas filling apparatus according to an embodiment of the present invention as described above will be described as follows.

The charging nozzle 50 is connected to the vehicle-side receptacle R. At this time, the open / close valve 20 and the vent valve 70 are closed.

When the lever 23 of the on-off valve 20 is rotated in this state, the inside of the valve is opened so that the CNG flows into the receptacle R through the check valve 30, the union tea 40, The CNG is charged into the storage container of the vehicle.

At this time, when the counter switch 26 is provided on the on-off valve 20, the number of times of charging is automatically counted through the process of rotating the lever 23, and when the counter 23 is manually operated, Is counted.

In this way, when the CNG charging is completed, the opening / closing valve 20 is closed and the vent valve 70 is opened. At this time, the gas remaining inside the filling nozzle (50) is discharged to the outside through the vent line (60).

Then, if the charging nozzle 50 is detached from the receptacle R, the CNG charging operation can be completed safely.

The technical ideas described in the embodiments of the present invention as described above can be implemented independently of each other, and can be implemented in combination with each other. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to and can be readily made by those skilled in the art. It is possible. Therefore, the scope of the technical protection of the present invention should be defined by the appended claims.

10: gas supply line 20: opening / closing valve
26; Counter switch 30: Check valve
40: Union tee 50: Charging nozzle
60: vent line 65: elbow
70: Vent valve R: Receptacle

Claims (4)

An on-off valve provided on the gas supply line;
A union tee having first, second and third connection ports, the first connection port being connected to the gas supply line;
A charging nozzle connected to a second connection port of the union teat, the charging nozzle being connectable to and detachable from a receptacle of the vehicle for gas filling;
A vent line connected to a third connection port of the union teat;
And a vent valve provided on the vent line for opening and closing the vent line. The method according to claim 1,
Wherein a check valve is provided between the end of the gas supply line and the first connection port of the unity tank at the front of the opening / closing valve to prevent backflow. The method according to claim 1,
Wherein the on-off valve further includes a counter switch for indicating the number of times the valve is opened and closed. The method according to claim 1,
And connecting connectors or elbows are connected and connected to the connecting portions between the first, second, and third connecting ports of the union tank and the check valve, the filling nozzle, and the vent line.
KR2020150005942U 2015-09-04 2015-09-04 Gas charging device for CNG charger KR20170000967U (en)

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KR2020150005942U KR20170000967U (en) 2015-09-04 2015-09-04 Gas charging device for CNG charger

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040070764A (en) 2003-02-04 2004-08-11 아남반도체 주식회사 De-inonized water shower device
KR100923645B1 (en) 2002-03-13 2009-10-28 다이요 닛산 가부시키가이샤 Fuel Filling Device And Fuel Leakage Detection Method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100923645B1 (en) 2002-03-13 2009-10-28 다이요 닛산 가부시키가이샤 Fuel Filling Device And Fuel Leakage Detection Method
KR20040070764A (en) 2003-02-04 2004-08-11 아남반도체 주식회사 De-inonized water shower device

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