KR102357272B1 - Gas injector, gas injection system and operating method of the system - Google Patents

Abstract

The present invention relates to a gas injector, a gas injection system, and an operation method of the system. The gas injector according to the present invention comprises: a chamber; a gas supply line for supplying a gas to the chamber; a charging port formed on a wall of the chamber through which the gas for charging is discharged; a gas recovery line through which the gas in the chamber which is not discharged to the charging port is discharged; and a heating means for heating the chamber. Accordingly, when the gas is injected into a hydrogen vehicle, an ammonia-based hydrogen vehicle, other storage devices, and so on, leakage of gas may be minimized.

Description

Gas injector, gas injection system and operating method of the system

The present invention relates to a gas injector, a gas injection system, and a method of operating the system, and more particularly, to inject ammonia gas into an ammonia or hydrogen gas-based hydrogen vehicle, or to transfer various types of special gases from a storage device to a transport device The present invention relates to a gas injector, a gas injection system, and a method of operating the system capable of minimizing the outflow of gas during injection.

In the case of gas used in real life, even if it leaks indoors or into the atmosphere, it is not harmful to the human body. do.

However, the types of gases used in industrial sites are becoming more diversified and subdivided for technological development that is advanced day by day. is occurring with

Accordingly, a gas injector, a gas injection system, and the system capable of preventing accidents due to leakage or leakage that may occur in the process of injecting various types of special gases from the storage device to the transport device or from the transport device to the storage device development of how it works.

As an example, a hydrogen car uses hydrogen and oxygen in the air as reactants instead of an internal combustion engine to generate electricity through a fuel cell and uses it to drive a motor. It can be operated by being charged with hydrogen just like being charged.

Such a hydrogen vehicle may be charged with ammonia (NH ₃ ) gas as a source of hydrogen.

However, since ammonia gas is in a gaseous state, it may leak into the air when injected into a vehicle and cause odor.

Registration No. 10-1515813's 'ammonia gas charging connector for preventing leakage' is one of the prior art for solving this problem, and as shown in FIG. 1, the suction port 31 is formed around the gas inlet 20, The gas leaked while injecting gas from the gas inlet 20 to the fuel inlet 2 may be introduced into the inlet 31 . And the gas introduced into the suction port 31 is moved to the recovery storage tank.

However, in the prior art, it is difficult to reliably prevent ammonia gas from leaking because the inlet 31 can communicate with the outside air.

KR 10-1515813 B1

Accordingly, an object of the present invention is to solve the problems of the related art, and a gas injector, a gas that can reliably prevent gas leakage when injecting gas into a hydrogen car, an ammonia-based hydrogen car, and other storage devices, etc. An injection system and a method of operating the system are provided.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Said object, according to the invention, a chamber; a gas supply line for supplying gas to the chamber; a charging port formed on the wall of the chamber through which gas for charging is discharged; a gas recovery line through which the gas in the chamber that is not discharged to the charging port is discharged; and heating means for heating the chamber.

The heating means may be a heating wire disposed on the periphery of the chamber.

The gas injector according to the present invention may further include a gas concentration detection sensor for measuring the gas concentration in the chamber.

The gas injector according to the present invention may further include an exhaust gas supply line for supplying the exhaust gas to the chamber.

The gas injector according to the present invention may further include a supply part valve for opening and closing the gas supply line and a recovery part valve for opening and closing the gas recovery line.

The gas injector according to the present invention may further include a vacuum pump connected to the recovery unit to operate.

According to another embodiment of the present invention, a storage unit connection line connected to a gas storage unit of a device in which gas is used; and the charging port are detachably coupled to the storage unit connection line so that the charging port communicates with the storage unit connection line. A gas injection system comprising a; the gas injector is provided.

A supply-side coupling portion is formed along the circumference of the chamber, a storage-side coupling portion is formed along the circumference of the storage connection line, and the storage connection line and the gas injector, the supply-side coupling portion and the storage side coupling It can be coupled by a coupling groove and a coupling protrusion that are formed on each side facing each other and engage with each other.

A coupling sensor for detecting that the coupling protrusion is inserted into the coupling groove may be provided in the supply-side coupling part and the storage-side coupling part.

The gas injection system according to the present invention may further include a storage valve for opening and closing the storage connection line.

According to another embodiment of the present invention, a storage unit connection line connected to a gas storage unit of a device in which gas is used; and a chamber, a gas supply line for supplying gas to the chamber, are formed on the wall of the chamber to perform charging a charging port through which gas is discharged, a gas recovery line through which gas in the chamber that is not discharged to the charging port is discharged, and a heating means for heating the chamber, wherein the charging port communicates with the storage unit connection line. A method of operating a gas injection system comprising: a gas injector detachably coupled to a storage connection line; a coupling step of coupling the gas injector to the storage connection line; a gas injection step of supplying gas through the gas supply line so that the gas is injected into the storage connection line after passing through the chamber; a gas supply stopping step of closing the gas supply line and the storage unit connection line; a gas recovery step of discharging the gas remaining in the chamber through the gas recovery line while heating the chamber with the heating means; and a separation step of separating the gas injector from the storage connection line.

The gas injector may further include an exhaust gas supply line for supplying the exhaust gas to the chamber, and in the gas recovery step, the exhaust gas may be injected into the chamber through the gas supply line.

The gas injection system further includes a coupling sensor detecting that the gas injector and the storage unit connection line are coupled, and between the coupling step and the gas injection step, the gas injector and the storage unit through the coupling sensor. A coupling confirmation step of confirming that the connection line is coupled may be further included.

The gas injector further includes a gas concentration detection sensor for measuring the gas concentration in the chamber, and the gas recovery step is performed until it is confirmed by the gas concentration detection sensor that the gas concentration in the chamber has fallen to a predetermined value or less. can

In the gas recovery step, the chamber may be heated to 40 ~ 150 ℃.

When using the gas injector of the present invention, since the gas remaining in the chamber is recovered in the process of injecting various kinds of special gases from the storage device to the transport device or from the transport device to the storage device, the gas injector according to the present invention Gas does not leak or leak from the chamber even after being separated from the storage unit or transport unit.

In addition, by desorbing the gas adsorbed on the inner wall of the chamber by the chamber heating means, it is possible to more reliably prevent the gas from being discharged to the outside of the chamber.

When the gas injector of the present invention further includes a gas concentration sensor or a gas supply line for exhaust, and a vacuum pump, the gas in the chamber can be more reliably recovered.

1 is an explanatory view of the prior art 'ammonia gas charging connector for preventing leakage'.
2 is a schematic cross-sectional view of a gas injector according to the present invention.
3 is a schematic cross-sectional view of a gas injection system according to the present invention.
4 is a flowchart of a method of operating a gas injection system according to the present invention.
5 to 8 are explanatory diagrams for each step constituting the operating method of the gas injection system according to the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

The gas injector 100 according to the present invention may be used for the purpose of injecting various types of special gases from a storage device to a transport device or from a transport device to a storage device, for example, a hydrogen car or an ammonia-based hydrogen car. It can be applied to the injection of hydrogen and ammonia gas in charging stations.

2 is a schematic cross-sectional view of a gas injector 100 according to the present invention. 2 is a diagram mainly showing the functional relationship between the constituent parts constituting the gas injector 100 according to the present invention, and the specific actual shape of the gas injector 100 according to the present invention may be different from that shown in FIG. . A specific actual shape of the gas injector 100 according to the present invention may be, for example, a gun shape.

The gas injector 100 according to the present invention includes a chamber 10 , a gas supply line 20 , a charging port 30 , a gas recovery line 40 , and a heating means 50 .

The chamber 10 is positioned at the center of the front end of the gas injector 100 according to the present invention, and has a space therein. Here, the front end of the gas injector 100 according to the present invention refers to a portion in a direction in which gas is combined with a device used for gas filling. A cross-section of the chamber 10 may be circular.

The gas supply line 20 is connected to the rear end of the chamber 10 to supply gas to the chamber 10 . An end of the gas supply line 20 opposite to the chamber 10 may be connected to a gas storage tank (not shown).

The charging port 30 is formed on the wall of the front end of the chamber 10, and the gas supplied to the chamber 10 from the gas supply line 20 is discharged for charging a hydrogen car, an ammonia-based hydrogen car, other storage devices, etc. becomes the path to When gas is charged in a hydrogen car, an ammonia-based hydrogen car, or other storage device, the charging port 30 communicates with a gas storage tank provided in a hydrogen car, an ammonia-based hydrogen car, other storage devices, and the like.

The gas recovery line 40 is connected to the rear end of the chamber 10 , and gas is supplied to the chamber 10 and injected into a hydrogen car, an ammonia-based hydrogen car, other storage devices, etc. through the charging port 30 . It becomes a path through which the gas remaining in the chamber 10 is discharged. An end of the gas recovery line 40 opposite to the chamber 10 may be connected to an adsorption device (not shown) for adsorbing the recovered gas.

An adsorbent including a component for adsorbing gas may be located in the adsorption device connected to the gas recovery line 40, and the type of adsorbent may be changed depending on the gas, and by periodically replacing the adsorbent, The gas adsorption efficiency can be maintained.

The heating means 50 may heat the chamber 10 so that the gas adsorbed on the inner wall of the chamber 10 is desorbed. The heating means 50 supplies gas to a hydrogen car, an ammonia-based hydrogen car, other storage devices, etc., and then immediately before discharging the gas remaining in the chamber 10 through the gas recovery line 40 or the chamber 10 ), it can operate at the same time as discharging the remaining gas.

As the heating means 50 , for example, a heating wire disposed on the periphery of the chamber 10 may be used. When current is supplied to the heating wire, resistance heat is generated to heat the chamber 10 .

In the gas injector 100 of the present invention, after supplying gas to a hydrogen car, an ammonia-based hydrogen car, other storage devices, etc., the gas remaining in the chamber 10 exits through the gas recovery line 40 to the chamber ( 10) Since there is no gas in the interior, the gas injector 100 according to the present invention is separated from the hydrogen vehicle, ammonia-based hydrogen vehicle, other storage devices, etc. No gas leaks. Accordingly, it is possible to prevent an accident occurring due to the leakage of gases having characteristics such as toxicity, corrosiveness, explosiveness, and flammability harmful to the human body to the outside air.

The gas injector 100 according to the present invention may further include a material supply line 70 for discharging.

The material for discharging supply line 70 is connected to the rear end of the chamber 10 to supply the material for discharging into the chamber 10 . The material for discharging is for discharging the gas in the chamber 10 through the recovery line when discharging the supplied gas to the gas recovery line 40. A material that is not reactive with the supplied gas can be selected, Depending on the type of gas supplied, the type of material for discharge may be changed. Accordingly, it is possible to more smoothly discharge the gas in the chamber 10 .

As the material for discharging, for example, an inert gas such as nitrogen (N ₂ ) may be used, or a fluid may be used if necessary. The fluid may be pure water.

The gas injector 100 according to the present invention may further include a vacuum pump (not shown) at the rear end of the gas recovery line 40 .

The vacuum pump maintains the inside of the gas recovery line 40 connected to the chamber 10 in a reduced pressure atmosphere to more reliably discharge the gas remaining in the chamber 10 and the gas recovery line 40 . In particular, when gas is used as a material for discharge, as well as when a fluid such as pure water is used, a material for discharging fluid such as gas and pure water, which is a material for discharging due to reduced pressure inside the gas recovery line 40 using a vacuum pump, is used. By ensuring that this is completely and reliably discharged, it becomes possible to prevent the supplied gas from being affected by the exhaust gas.

The gas injector 100 according to the present invention may further include a supply part valve 21 and a recovery part valve 41 .

The supply valve 21 serves to open and close the gas supply line 20. After connecting the gas injector 100 according to the present invention to a hydrogen vehicle, an ammonia-based hydrogen vehicle, other storage devices, etc., the gas supply line ( 20) is opened so that the gas can be filled in a hydrogen car, an ammonia-based hydrogen car, and other storage devices through the chamber 10 and the charging port 30, and after the gas filling is completed, the gas supply line 20 ) is closed.

And the recovery part valve 41 serves to open and close the gas recovery line 40, and opens the gas recovery line 40 after the filling of gas for a hydrogen vehicle, an ammonia-based hydrogen vehicle, and other storage devices is completed. Thus, the gas remaining in the chamber 10 can be discharged, and after the gas is completely discharged from the chamber 10, the gas recovery line 40 is closed.

When the ammonia gas injector 100 according to the present invention further includes the material supply line 70 for discharging, it may further include a material valve 71 for discharging that opens and closes the material supply line 70 for discharging. Of course. Like the recovery part valve 41, the discharge material valve 71 opens the discharge material supply line 70 after filling the gas for a hydrogen vehicle, an ammonia-based hydrogen vehicle, and other storage devices is completed to open the chamber ( The material for discharging is supplied to 10), and after the gas is completely discharged from the chamber 10, the discharging material supply line 70 is closed.

The gas supply line 20 and the material supply line 70 for discharging may be combined into one line to form a main supply line 80 , and may be connected to the chamber 10 through the main supply line 80 . The main supply line 80 is provided with a supply main valve 81 to open and close the main supply line 80 . The supply main valve 81 opens the main supply line 80 when the gas supply line 20 is opened and when the material supply line 70 for discharging is opened.

The gas injector 100 according to the present invention may further include a gas concentration sensor 60 .

The gas concentration sensor 60 measures the gas concentration in the chamber 10 . The gas concentration sensor measures the concentration of the gas while the residual gas in the chamber 10 is discharged from the chamber 10 to the gas recovery line 40, and when the gas concentration falls below a certain value, the gas recovery process to be able to stop

The gas concentration sensor 60 is near a portion to which the gas supply line 20 is connected, a portion to which the gas recovery line 40 is connected, and a gas supply so as to accurately measure the concentration of gas in the chamber 10 . A gas concentration in the chamber 10 may be measured between a portion to which the line 20 is connected and a portion to which the gas recovery line 40 is connected.

Hereinafter, the gas injection system 1 according to the present invention will be described. While describing the gas injection system 1 according to the present invention, detailed descriptions of the parts mentioned in the description of the gas injector 100 will be omitted.

3 shows a schematic cross-sectional view of a gas injection system 1 according to the present invention.

The gas injection system 1 according to the present invention includes a storage connection line 200 and a gas injector 100 .

The storage unit connection line 200 is formed to be connected to the gas storage unit of a device receiving gas, such as a hydrogen vehicle, an ammonia-based hydrogen vehicle, or other storage devices. The inlet 230 of the storage connection line 200 may be exposed to the surface of the device in which the gas is used.

The gas injector 100 may be detachably coupled to the storage connection line 200 so that the charging port 30 communicates with the storage connection line 200 .

When injecting gas into a hydrogen car, an ammonia-based hydrogen car, or other storage device, the gas injector 100 is coupled to the storage connection line 200, and injection into a hydrogen car, ammonia-based hydrogen car, other storage devices, etc. After this is completed, the gas injector 100 is separated from the storage connection line 200 .

The gas injection system 1 according to the present invention includes a supply-side coupling part 110 and a storage-side coupling part 210 , and in this case, any one of the supply-side coupling part 110 and the storage-side coupling part 210 has a coupling groove. (G) is formed and the other one may be formed with a coupling protrusion (B).

The supply-side coupling part 110 is formed along the outer periphery of the chamber 10 , and has a short cylindrical overall shape. The storage-side coupling part 210 is formed along the outer periphery of the storage-side coupling line 200 , and, like the supply-side coupling part 110 , the overall shape is made of a short cylindrical shape.

For example, the coupling groove (G) may be formed on the distal end surface of the supply-side coupling unit 110 , and the coupling protrusion (B) may protrude from the distal end surface of the storage side coupling unit 210 . When the gas injector 100 is approached to the storage connection line 200 and the coupling protrusion B is inserted into the coupling groove G, the gas injector 100 and the storage connection line 200 are coupled.

The coupling groove (G) and the coupling protrusion (B) are coupled to each other so that the charging port 30 of the gas injector 100 and the inlet 230 of the storage connection line 200 contact each other, the supply side coupling part It is located on the (110) and the storage-side coupling portion (210).

Two coupling grooves (G) and coupling protrusions (B) may be respectively formed for reliable coupling of the gas injector 100 to the storage unit connection line 200 .

A coupling holding groove (G1) may be formed on the inner surface of the coupling groove (G). And a coupling fixed to the inner surface of the receiving groove (B1) by the receiving groove (B1), a spring (B2) disposed in the receiving groove (B1), and the spring (B2) on the outer surface of the engaging projection (B) A holder B3 may be formed. In a state where no external force is applied to the engagement holder (B3), the engagement holder (B3) may have an arrangement that protrudes about half out of the receiving groove (B1), and when an external force is applied to the engagement holder (B3), the engagement is maintained When the ball (B3) enters the receiving groove (B1) and the external force is removed, it can return to its original position by the spring (B2).

When the engaging protrusion (B) starts to be inserted into the engaging groove (G), the engaging retaining tool (B3) is pressed by the inner surface of the engaging groove (G) into the receiving groove (B1), and the engaging projection (B) is coupled When fully inserted into the groove (G) and the engagement holder (B3) reaches the position of the engagement retention groove (G1), the engagement holder (B3) protrudes out of the receiving groove (B1) again, and a portion of the engagement retention groove (G1) inserted into Accordingly, if a force greater than or equal to the elastic force of the spring B2 is not applied to the ammonia gas injector 100 , the ammonia gas injector 100 may maintain a state coupled to the storage connection line 200 .

A coupling sensor 300 for detecting that the coupling protrusion (B) is inserted into the coupling groove (G) may be provided in the supply-side coupling unit 110 and the storage side coupling unit 210 .

The coupling sensor 300 may allow the gas supply line 20 of the gas injector 100 to be opened after it is confirmed that the gas injector 100 and the storage connection line 200 are coupled.

The gas injection system 1 according to the present invention may further include a reservoir valve 220 .

The storage valve 220 serves to open and close the storage connection line 200 , and when the gas supply line 20 is opened in a state in which the gas injector 100 and the storage connection line 200 are coupled, the storage The connection line 200 is opened so that gas can be charged in a hydrogen vehicle, an ammonia-based hydrogen vehicle, other storage devices, etc., and when the gas supply line 20 is closed, the storage connection line 200 is closed to close the chamber ( 10) It is possible to prevent substances for discharge, such as nitrogen gas, supplied when recovering the residual gas in the interior, from flowing into hydrogen cars, ammonia-based hydrogen cars, and other storage devices.

The gas injection system 1 according to the present invention has a heating means 50, a supply valve 21, and a recovery based on the data detected by the gas concentration detection sensor 60 and the coupling sensor 300, etc. in addition to the configuration as described above. It may further include a control unit (not shown) to operate the auxiliary valve 41 and the storage valve 220 in a timely manner.

Hereinafter, an operation method of the gas injection system 1 according to the present invention will be described.

4 is a flowchart of a method of operating the gas injection system 1 according to the present invention.

The operation method of the gas injection system according to the present invention includes a coupling step (S10), a gas injection step (S30), a gas supply stop step (S40), a gas recovery step (S50), and a separation step (S60).

In the coupling step (S10), the gas injector 100 is coupled to the storage connection line 200 as shown in FIG. By the coupling of the coupling groove (G) and the coupling protrusion (B), the charging port 30 of the gas injector 100 and the inlet of the storage connection line 200 are in contact with each other, so that the space in the chamber 10 and the storage The spaces in the sub-connection line 200 communicate with each other. In the coupling step (S10), the gas supply line 20, the material supply line 70 for discharging, the main supply line 80, the gas recovery line 40, and the storage connection line 200 are maintained in a closed state. .

In the gas injection step ( S30 ), gas is supplied through the gas supply line 20 as shown in FIG. 6 . In the gas injection step (S30), the gas supply line 20, the main supply line 80, and the storage connection line 200 are opened, and the material supply line 70 and the gas recovery line 40 for discharge are closed. . Accordingly, the gas supplied through the gas supply line 20 may be introduced into the storage connection line 200 through the chamber 10 .

After the gas is sufficiently charged for a hydrogen car, an ammonia-based hydrogen car, and other storage devices, the gas supply line 20 and the storage unit connection line 200 as shown in FIG. 7 in the gas supply stop step (S40). ) is closed. Even after the gas supply line 20 and the storage connection line 200 are closed, the gas not supplied to the storage connection line 200 remains in the chamber 10 .

In the gas recovery step (S50), as shown in FIG. 8 , the gas remaining in the chamber 10 is discharged through the gas recovery line 40 while heating the chamber 10 with the heating means 50 . In the gas recovery step (S50), the gas recovery line 40 is opened, and when the gas injector 100 is provided with the material supply line 70 for discharge, the material supply line for discharge together with the gas recovery line 40 ( 70 ) and the main supply line 80 are also opened, so that a material for discharging can be injected into the chamber 10 .

In addition, when the gas injector 100 is provided with a vacuum pump, a vacuum pump for depressurizing the gas recovery line 40 is operated, so that the residual gas in the chamber 10 can be more reliably recovered, and the operation of the vacuum pump And the exhaust gas supply line 70 may be crossed. That is, the operation of the vacuum pump may be performed like the supply of the material for discharge through the material for discharge supply line 70 , or the operation of the vacuum pump and the supply of the material for discharge may alternately proceed.

The gas remaining in the chamber 10 due to the pressure applied while the material for discharge is supplied may be smoothly discharged through the gas recovery line 40 . In addition, since the chamber 10 is heated even by the heating means 50 and the gas adsorbed on the inner wall is desorbed, the constituents of the gas do not remain in the chamber 10, so toxicity, corrosiveness, explosiveness, flammability, etc. harmful to the human body It is possible to prevent accidents caused by gas with the characteristics of leaking out to the outside air.

In the gas recovery step (S50), the heating means 50 may instantly heat the chamber 10 to 40 ~ 150 ℃.

When the gas recovery step ( S50 ) is completed, the material supply line 70 , the main supply line 80 , and the gas recovery line 40 are closed.

In the separation step ( S60 ), the gas injector 100 is separated from the storage unit connection line 200 . Even if the gas injector 100 and the storage connection line 200 are separated, the residual gas in the chamber 10 is removed in the gas recovery step S50 and the inlet of the storage connection line 200 is connected to the storage valve 220 . Because it is closed by the gas, the gas does not leak out.

When the gas injection system 1 further includes a coupling sensor 300 for detecting that the gas injector 100 and the storage connection line 200 are coupled, between the coupling step (S10) and the gas injection step (S30) may further include a binding confirmation step (S20).

In the coupling confirmation step (S20), a subsequent gas injection step (S30) is performed only when the coupling is detected by checking whether the gas injector 100 and the storage unit connection line 200 are coupled through the coupling sensor 300. can make it go ahead. Accordingly, the gas injection step (S30) proceeds in a state where the coupling of the gas injector 100 and the storage unit connection line 200 is not complete, thereby preventing the gas from leaking to the outside.

When the gas injector 100 further includes a gas concentration sensor 60, in the gas recovery step (S50), it is confirmed that the gas concentration in the chamber 10 has fallen to a predetermined value or less by the gas concentration sensor 60 It can go on until

Accordingly, the residual gas in the chamber 10 can be reliably recovered, and the gas can be more reliably prevented from leaking to the outside after the gas injector 100 and the storage connection line 200 are separated.

The scope of the present invention is not limited to the above-described embodiments, but may be implemented in various types of embodiments within the scope of the appended claims. Without departing from the gist of the present invention claimed in the claims, it is considered to be within the scope of the claims of the present invention to various extents that can be modified by any person skilled in the art to which the invention pertains.

1: gas injection system
10: chamber 20: gas supply line
21: supply valve 30: filling port
40: gas recovery line 41: recovery part valve
50: heating means 60: gas concentration detection sensor
70: exhaust gas supply line 71: exhaust gas valve
80: main supply line 81: supply main valve
100: gas injector 110: supply side coupling part
200: storage connection line 210: storage-side coupling portion
220: reservoir valve 300: combined sensor

Claims (14)

chamber;
an ammonia gas supply line for supplying ammonia gas to the chamber;
a charging port formed on the wall of the chamber through which ammonia gas for charging ammonia is discharged;
an ammonia gas recovery line through which ammonia gas in the chamber that is not discharged to the charging port is discharged;
a heating means for heating the ammonia gas for the smooth desorption of the ammonia gas adsorbed on the wall inside the chamber;
a discharging material supply line for supplying a discharging material for discharging the ammonia gas to the chamber;
a vacuum pump installed at the rear end of the material supply line for discharging; and
Including; ammonia gas concentration sensor for measuring the ammonia gas concentration in the chamber;
The heating means is a heating wire disposed on the periphery of the chamber,
The sensor is for measuring the concentration of ammonia gas while the residual ammonia gas in the chamber 10 is discharged from the chamber 10 to the ammonia gas recovery line 40,
The sensor is located near the part to which the ammonia gas supply line 20 is connected, near the part to which the ammonia gas recovery line 40 is connected, and the part to which the ammonia gas supply line 20 is connected and the ammonia gas recovery line 40. Measuring the ammonia gas concentration in the chamber 10 between the parts to be connected,
The ammonia gas concentration in the chamber 10 is measured when the gas concentration in the chamber falls below a certain value while the residual ammonia gas in the chamber 10 is discharged from the chamber 10 to the ammonia gas recovery line 40 . Ammonia gas injector, characterized in that it proceeds until confirmed. delete delete delete According to claim 1,
a supply valve for opening and closing the ammonia gas supply line;
Ammonia gas injector, characterized in that it further comprises a recovery part valve for opening and closing the ammonia gas recovery line. A storage unit connection line connected to the ammonia gas storage unit of the device in which ammonia gas is used; and
Ammonia gas comprising a; injection system. 7. The method of claim 6,
A supply-side coupling portion is formed along the circumference of the chamber, and a storage-side coupling portion is formed along the circumference of the storage connection line,
The storage unit connection line and the ammonia gas injector are formed on each surface facing the supply-side coupling part and the storage-side coupling part and are coupled by a coupling groove and a coupling protrusion that engage with each other, the ammonia gas injection system . 8. The method of claim 7,
Ammonia gas injection system, characterized in that the supply-side coupling portion and the storage-side coupling portion, characterized in that provided with a coupling sensor for detecting that the coupling projection is inserted into the coupling groove. 7. The method of claim 6,
Ammonia gas injection system, characterized in that it further comprises a storage valve for opening and closing the storage connection line. Ammonia gas storage unit connection line 200 connected to the ammonia gas storage unit of the device in which ammonia gas is used; and
The chamber 10, the ammonia gas supply line 20 for supplying ammonia gas to the chamber, the charging port 30 formed on the wall of the chamber and discharging ammonia gas for charging, the chamber not discharged to the charging port An ammonia gas recovery line 40 from which ammonia gas is discharged, and a heating means 50 for heating the chamber,
An ammonia gas injector 100 detachably coupled to the storage connection line so that the charging port 30 communicates with the storage connection line 200. In the operating method of an ammonia gas injection system comprising,

a coupling step (S10) of coupling the ammonia gas injector 100 to the storage unit connection line 200;
An ammonia gas injection step (S30) of supplying ammonia gas through the ammonia gas supply line 20, and injecting the ammonia gas into the storage connection line 200 after passing through the chamber;
an ammonia gas supply stopping step (S40) of closing the ammonia gas supply line 20 and the storage unit connection line 200;
an ammonia gas recovery step (S50) of discharging the ammonia gas remaining in the chamber 10 through the ammonia gas recovery line 40 while heating the chamber 10 with the heating means; and
Separation step (S60) of separating the ammonia gas injector 100 from the ammonia gas storage unit connection line 200; includes;
The ammonia gas injector 100 includes a material supply line 70 for discharging for supplying a gas for discharging ammonia gas to the chamber; vacuum pump; and an ammonia gas concentration detection sensor 60; may include,
In the ammonia gas recovery step, a material for discharge is injected into the chamber through the material supply line 70 for discharge, and a vacuum pump is used,
the discharging material supply line 70; vacuum pump; and ammonia gas concentration sensor 60; is related to the ammonia gas recovery step (S50),
The discharging material supply line 70 serves to inject the discharging material into the chamber in the ammonia gas recovery step (S50),
The vacuum pump serves to remove the supplied exhaust material together with the ammonia gas remaining in the chamber in the ammonia gas recovery step (S50),
The ammonia gas concentration sensor 60 is located near the part to which the ammonia gas supply line 20 is connected, so that the ammonia gas recovery line 40 is connected so as to accurately measure the concentration of ammonia gas in the chamber 10 . By measuring the ammonia gas concentration in the chamber 10 near the part and between the part to which the ammonia gas supply line 20 is connected and the part to which the ammonia gas recovery line 40 is connected, the ammonia gas recovery line in the chamber 10 By measuring the concentration of ammonia gas in the ammonia gas recovery step (S50) related to the process in which the residual ammonia gas in the chamber 10 is discharged to (40), when the ammonia gas concentration falls below a certain value, the ammonia gas Acts to stop the recovery process,
A recovery part valve 41 is provided in the ammonia gas recovery line 40 related to the ammonia gas recovery step (S50),
The recovery part valve 41 serves to open and close the ammonia gas recovery line, so that after the completion of the ammonia gas supply stop step 30, which is filled, the ammonia gas recovery line is opened to discharge the ammonia gas remaining in the chamber. And, after the ammonia gas is completely discharged from the chamber, the operation of closing the ammonia gas recovery line,
Each of the steps (S10), (S30), (S40), (S50), and (S60) is a method of operating an ammonia gas injection system, characterized in that the next step proceeds after the previous step is completed in order. delete 11. The method of claim 10,
The ammonia gas injection system further comprises a coupling sensor for detecting that the ammonia gas injector and the ammonia gas storage unit connection line are coupled,
Between the coupling step and the ammonia gas injection step, a coupling confirmation step (S20) of confirming that the ammonia gas injector and the ammonia gas storage unit connection line are coupled through the coupling sensor are further included. How a gas injection system works. delete 11. The method of claim 10,
The operation method of the ammonia gas injection system, characterized in that the temperature of the inner wall of the chamber is heated to 40 ~ 150 ℃ in the ammonia gas recovery step (S50).

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