KR102648828B1 - Gas fueling nozzle - Google Patents

Abstract

The present invention relates to gas filling nozzles. The gas charging nozzle according to an embodiment of the present invention is coupled to a receptacle provided in an external device, and in the gas charging nozzle for charging gas into the gas storage part of the external device, the gas charging nozzle supplies gas to the inside. A fixing body in which a supply pipe is formed and at least one first fixing groove and at least one second fixing groove spaced apart along the longitudinal direction are formed on the outer peripheral surface; A coupling portion installed at one end of the fixed body and coupled to or disengaged from a receptacle provided in an external device; It is installed to be reciprocatable along the longitudinal direction of the fixed body while wrapped around the fixed body, and is inserted into or released from at least one first fixed groove or at least one second fixed groove when reciprocated along the longitudinal direction of the fixed body. a moving body including at least one engaging member; and a blocking gas inlet connected to at least one side of the fixed body and the moving body, and introducing a blocking gas to prevent freezing by gas into the internal space of the fixed body and the moving body.

Description

Gas fueling nozzle}

The present invention relates to a gas charging nozzle. More specifically, the gas charging nozzle can be easily and firmly coupled to the receptacle with a simpler structure and operation, and the gas charging nozzle can supply cryogenic gas to an external device. This relates to a gas charging nozzle that can prevent the inside of the nozzle body from freezing during operation.

Recently, as low-emission vehicles to respond to environmental problems, natural gas vehicles, fuel cell vehicles, and hydrogen vehicles using gas fuels such as Compressed Natural Gas (CNG) and Hydrogen gas have been actively developed. It is being done.

In this way, in order to promote the spread of vehicles running on gas fuel, a device for stably and efficiently charging gas fuel into a vehicle tank mounted on a vehicle is essential.

For example, a fuel cell electric vehicle (FCEV) is a vehicle that generates electricity using a fuel cell that uses a chemical reaction between hydrogen and oxygen to drive a motor. It uses high-pressure compressed hydrogen from a hydrogen gas charging nozzle. It has a structure that receives charge, stores it in an internal vehicle-mounted tank, and supplies it to the fuel cell stack to cause a chemical reaction with oxygen.

Meanwhile, in order to charge gas into a tank mounted on a vehicle such as a natural gas vehicle or fuel cell vehicle, the gas charging nozzle provided in the gas charging device is connected to a receptacle provided in a natural gas vehicle, fuel cell vehicle, etc. Since high-pressure gas must be injected, stable coupling between the gas charging nozzle and the receptacle is of utmost importance.

For example, Domestic Registered Utility Model Publication No. 20-0219075 (Easily attachable and detachable LPG vehicle gas injector) (announced on April 2, 2001), Domestic Registered Patent Publication No. 10-0794620 (Ball sliding type LPG charging device) ) (Notice on January 14, 2008), etc., charge the vehicle by pressing a number of fixing balls (or fastening balls) provided at the front of the gas charging nozzle with a cylinder that moves back and forth by manipulating the operation lever. The structure of an LPG gas filling nozzle fastened to a nipple (receptacle) is disclosed.

In addition, in Domestic Patent Publication No. 10-2010-0126663 (Coupling for LNG) (published on December 2, 2010), the locking sleeve moves when turning the manual lever and pressurizes a number of collets to connect the coupling. The structure of a gas filling nozzle (coupling) for LNG that couples a pipe and a coupling housing is disclosed.

However, since the conventional gas filling nozzle described in the above patent document has a structure in which a plurality of balls are pressed and fastened to a receptacle, there is a problem in that the mutual coupling force is weak. In addition, the conventional gas filling nozzle described in the above patent document had a problem in that the structure and operation of reciprocating the cylinder back and forth according to the operation of the operation lever to pressurize or release the plurality of balls were somewhat complicated.

In particular, the conventional gas filling nozzle described in the above patent document has a structure in which a coupling or locking sleeve that moves by operating a lever is fastened to the receptacle when pressing a plurality of balls or collets, so it is heated to about -40°C like hydrogen gas. When cooled, extremely low-temperature gas flows, water vapor flowing into the coupling or locking sleeve, or multiple balls or collets from the surroundings freezes, causing the movement of the coupling or locking sleeve or the locking action of the multiple balls or collets to significantly deteriorate, causing gas There was a problem in that the gas charging nozzle could not be separated from the receptacle after charging was completed.

Therefore, not only can the gas charging nozzle be easily and firmly coupled to the receptacle with a simpler structure and operation, but it can also prevent the inside of the nozzle body from freezing while the gas charging nozzle supplies cryogenic gas to an external device. A gas charging nozzle that can be used is required.

Domestic Registered Utility Model Publication No. 20-0219075 (Easily attachable and detachable gas injector for LPG vehicles) (announced on April 2, 2001) Domestic Patent Publication No. 10-0794620 (Ball sliding type LPG charging device) (announced on January 14, 2008) Domestic Patent Publication No. 10-2010-0126663 (Coupling for LNG) (published on December 2, 2010)

The present invention was invented to improve the above-mentioned problems, and the problem to be solved by the present invention is that when a movable body installed to surround a fixed body on which a gas supply pipe is formed reciprocates, a locking member installed on the movable body is formed on the fixed body. By configuring the coupling portion installed on the fixing body to be coupled or disengaged from the receptacle when inserted into the first fixing groove and the second fixing groove, the gas charging nozzle can be easily and firmly coupled to the receptacle with a simpler structure and operation. Rather, the aim is to provide a gas filling nozzle that can prevent the inside of the nozzle body from freezing while the gas filling nozzle supplies cryogenic gas to an external device.

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

In order to achieve the above object, the gas filling nozzle according to an embodiment of the present invention is coupled to a receptacle provided in an external device, and is a gas filling nozzle that fills the gas storage part of the external device with gas. , a fixed body having a gas supply pipe for supplying gas therein, and having at least one first fixing groove and at least one second fixing groove spaced apart along the longitudinal direction on the outer circumferential surface; A coupling portion installed at one end of the fixed body and coupled to or disengaged from a receptacle provided in an external device; It is installed to be reciprocatable along the longitudinal direction of the fixed body in a state surrounding the fixed body, and when reciprocating along the longitudinal direction of the fixed body, the at least one first fixing groove or the at least one second fixing groove a moving body including at least one locking member that is inserted into or de-inserted from; and a blocking gas inlet connected to at least one side of the fixed body and the moving body, and introducing a blocking gas to prevent freezing by the gas into the internal space of the fixed body and the moving body. Do it as

At this time, the fixed body has the gas supply pipe formed inside, a needle valve that opens and closes the gas supply pipe is installed on the inner peripheral surface, and the coupling portion is installed on the outer peripheral surface, adjacent to the coupling portion. The at least one first fixing groove and the at least one second fixing groove are formed along the circumferential direction on the outer circumferential surface, and a safety valve capable of reciprocating movement in the direction toward the inner circumferential surface of the moving body is provided on one outer circumferential surface. a first fixed body installed; and a second fixing body coupled to one end of the first fixing body and having a mounting hole through which the receptacle is inserted and coupled to the inner circumferential surface. The safety valve is configured such that the at least one engaging member is connected to the at least one first fixing body. Characterized in that it limits the movement of the movable body when inserted into the fixing groove or the at least one second fixing groove.

In addition, the needle valve contacts the receptacle when the moving body moves in a first direction toward the receptacle and the at least one engaging member is inserted into the at least one first fixing groove and moves in the first direction toward the receptacle. moves in a second direction opposite to the above and opens one end of the gas supply pipe to supply the gas supplied through the gas supply pipe to the receptacle, and the moving body moves in the second direction to engage the at least one locking member. When inserted into the at least one second fixing groove, it moves in the first direction away from the receptacle and closes one end of the gas supply pipe to block the gas supplied through the gas supply pipe. .

In addition, the safety valve is operated by the pressure of the gas supplied through the gas supply pipe when the moving body moves in the first direction and the at least one locking member is inserted into the at least one first fixing groove. The movement of the mobile body is restricted by contacting the mobile body, and when the mobile body moves in the second direction and the at least one locking member is inserted into the at least one second fixing groove, it is returned by an elastic force. This is characterized in that contact is released from the moving body to allow movement of the moving body.

In addition, the blocking gas inlet unit introduces the blocking gas into a space formed between the inner peripheral surface of the moving body and the safety valve.

In addition, the coupling portion moves when the movable body moves in a first direction toward the receptacle along the longitudinal direction of the fixed body and the at least one engaging member is inserted into the at least one first fixing groove. It is coupled to the receptacle by contacting one end of the body, and the movable body moves in a second direction opposite to the first direction along the longitudinal direction of the fixed body so that the at least one engaging member is connected to the at least one second direction. When inserted into the fixing groove, it is spaced apart from one end of the movable body and is disengaged from the receptacle.

Specific details of other embodiments are included in the detailed description and drawings.

According to the gas charging nozzle according to an embodiment of the present invention, when the movable body installed to surround the fixed body on which the gas supply pipe is formed is reciprocated, the engaging member installed on the movable body is formed in the first fixing groove and the second fixing groove on the fixed body. By configuring the coupling portion installed on the fixed body to be coupled or disengaged from the receptacle when inserted into the gas charging nozzle, the gas charging nozzle can be easily and firmly coupled to the receptacle with a simpler structure and operation.

In addition, according to the gas charging nozzle according to an embodiment of the present invention, a safety valve is provided to limit the movement of the moving body when the moving body moves and the locking member is inserted into the first fixing groove or the second fixing groove. , Since the moving body moves while gas is supplied through the gas supply pipe, the coupling part installed on the fixed body can be prevented from being separated from the receptacle, thereby improving the safety of the gas charging nozzle.

In addition, according to the gas charging nozzle according to an embodiment of the present invention, the blocking gas is introduced into the space formed between the fixed body and the moving body to discharge water vapor introduced into the interior of the gas charging nozzle or into the interior of the gas charging nozzle. By blocking the incoming water vapor, it is possible to prevent the inside of the gas charging nozzle from freezing due to cooling of the water vapor by the cryogenic gas supplied through the gas supply pipe, which occurs during the process of attaching or uncoupling the gas charging nozzle to the receptacle. The problem can be solved.

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

1 is a perspective view schematically showing the structure of a gas filling device.
Figure 2 is a perspective view showing the structure of a gas charging nozzle according to an embodiment of the present invention.
Figure 3 is a side cross-sectional view showing the structure of a gas charging nozzle according to an embodiment of the present invention.
Figure 4 is a plan cross-sectional view showing the structure of a gas charging nozzle according to an embodiment of the present invention.
Figure 5 is an exploded perspective view showing the structure of a fixed body constituting a gas charging nozzle according to an embodiment of the present invention.
Figure 6 is an exploded perspective view showing the structure of the first fixed body constituting the fixed body of the gas charging nozzle according to an embodiment of the present invention.
Figure 7 is a longitudinal cross-sectional view showing the operation of the safety valve constituting the first fixing body of the gas charging nozzle according to an embodiment of the present invention.
Figure 8 is an exploded perspective view showing the structure of a coupling part constituting a gas charging nozzle according to an embodiment of the present invention.
Figure 9 is a diagram showing the operation of a coupling part constituting a gas charging nozzle according to an embodiment of the present invention.
Figure 10 is an exploded perspective view showing the structure of a moving body constituting a gas charging nozzle according to an embodiment of the present invention.
Figure 11 is a longitudinal cross-sectional view showing the operation of a gas charging nozzle according to an embodiment of the present invention.
Figure 12 is a longitudinal cross-sectional view showing blocking gas flowing into the gas charging nozzle according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily practice the present invention.

In describing the embodiments, descriptions of technical content that is well known in the technical field to which the present invention belongs and that are not directly related to the present invention will be omitted. This is to convey the gist of the present invention more clearly without obscuring it by omitting unnecessary explanation.

For the same reason, some components are exaggerated, omitted, or schematically shown in the accompanying drawings. Additionally, the size of each component does not entirely reflect its actual size. In each drawing, identical or corresponding components are assigned the same reference numbers.

Additionally, device or element orientation (e.g. “front”, “back”, “up”, “down”, “top”, “bottom”). The expressions and predicates used herein with respect to terms such as ", "left", "right", "lateral", etc. are merely used to simplify the description of the invention and related devices. Alternatively, you may notice that it does not simply indicate or imply that an element should have a particular orientation.

Hereinafter, the present invention will be described with reference to the drawings for explaining a gas charging nozzle according to an embodiment of the present invention.

1 is a perspective view schematically showing the structure of a gas charging device.

As shown in FIG. 1, the gas charging device 10 circulates a refrigerant flowing in from the outside to cool and discharge the high-pressure compressed gas flowing in from the outside. ) and a gas charging unit (Dispenser) 12 that supplies the gas discharged from the gas cooling unit 11 to an external device (not shown) such as a vehicle using a gas charging nozzle 1.

In the present invention, gas refers to various types of gas such as compressed natural gas (CNG) and hydrogen gas, and external devices include natural gas vehicles and fuels fueled by compressed natural gas, hydrogen gas, etc. This refers to battery cars and hydrogen cars.

For example, the hydrogen gas charging device 10 compresses hydrogen gas to an appropriate pressure (approximately 875 bar) through a hydrogen gas compressor (not shown), and compresses hydrogen gas to an appropriate pressure (approximately 875 bar) through a hydrogen gas cooling unit 11. After cooling to an appropriate temperature (approximately -40 to -33 ℃), the receptacle provided in the fuel cell electric vehicle (FCEV) is passed through the hydrogen charging gas nozzle 100 provided in the hydrogen gas charging unit 12. It can be supplied to a vehicle-mounted tank (not shown) provided inside a fuel cell vehicle while coupled to a (receptacle).

Hereinafter, with reference to FIGS. 2 to 12 , the structure and operation of the gas charging nozzle provided in the gas charging unit 12 of the gas charging device 10 will be described in detail.

Figure 2 is a perspective view showing the structure of a gas charging nozzle according to an embodiment of the present invention, Figure 3 is a side cross-sectional view showing the structure of a gas filling nozzle according to an embodiment of the present invention, and Figure 4 is an embodiment of the present invention. This is a plan cross-sectional view showing the structure of a gas charging nozzle according to an embodiment.

FIG. 3 shows a side cross-sectional view (cross-section A-A) of the gas charging nozzle shown in FIG. 2, and FIG. 4 shows a plan cross-sectional view (cross-section B-B) of the gas filling nozzle shown in FIG. 2.

As shown in FIGS. 2 to 4, the gas filling nozzle 1 according to an embodiment of the present invention may be configured to include a fixed body 100, a coupling portion 200, and a moving body 300. . This gas charging nozzle 1 is coupled to a receptacle (R in FIG. 11 (a)) provided in an external device, and can charge gas into the gas storage part of the external device.

The fixing body 100 is disposed inside the gas charging nozzle 1, and a gas supply pipe 111 for supplying gas along the longitudinal direction is formed inside, and first fixing grooves spaced along the longitudinal direction on the outer peripheral surface ( 113) and a second fixing groove 114 may be formed. The first fixing groove 113 and the second fixing groove 114 serve to fix the position of the moving body 300 when the locking member 312, which will be described later, is inserted. In FIGS. 3 and 4, the first fixing groove 114 is shown in FIGS. An example in which one fixing groove 113 and one second fixing groove 114 are formed is shown, but the present invention is not limited to this. The specific structure of this fixed body 100 will be described in detail later with reference to FIGS. 5 and 6.

The coupling portion 200 is installed at one end of the fixing body 100 and can be coupled to or disengaged from a receptacle provided in an external device. The specific structure and operation of this coupling portion 200 will be described in detail later with reference to FIGS. 8 and 9.

The movable body 300 is disposed outside the gas charging nozzle 1, and can be installed to move back and forth along the longitudinal direction of the fixed body 100 while surrounding the fixed body 100. In addition, the moving body 300 may include a locking member 312 that is inserted into or released from the first fixing groove 113 or the second fixing groove 114 when reciprocating along the longitudinal direction of the fixing body 100. You can. The specific structure of this moving body 300 will be described in detail later with reference to FIG. 10.

On the other hand, the coupling portion 200 constituting the gas charging nozzle 1 according to an embodiment of the present invention moves the moving body 300 in a first direction toward the receptacle along the longitudinal direction of the fixed body 100 (FIG. 3 and in the example of FIG. 4 , when the locking member 312 moves in the left direction and is inserted into the first fixing groove 113, it may contact one end of the moving body 300 and be coupled to the receptacle. In addition, the coupling portion 200 is caught when the moving body 300 moves in a second direction opposite to the first direction (right direction in the example of FIGS. 3 and 4) along the longitudinal direction of the fixed body 100. When the member 312 is inserted into the second fixing groove 114, it may be spaced apart from one end of the movable body 300 and disengaged from the receptacle.

Hereinafter, with reference to FIGS. 5 and 6, the structure of the fixed body 100 constituting the gas charging nozzle 1 according to an embodiment of the present invention will be described in detail.

Figure 5 is an exploded perspective view showing the structure of a fixed body constituting a gas charging nozzle according to an embodiment of the present invention, and Figure 6 is a first fixed structure constituting a fixed body of a gas charging nozzle according to an embodiment of the present invention. It is an exploded perspective view showing the structure of the body, and Figure 7 is a longitudinal cross-sectional view showing the operation of the safety valve constituting the first fixed body of the fixed body constituting the gas charging nozzle according to an embodiment of the present invention.

As shown in FIGS. 5 and 6, the fixing body 100 includes a first fixing body 100 with a gas supply pipe 111 formed therein and a coupling portion 200 installed on the outer peripheral surface, and a first fixing body ( It may be configured to include a second fixing body 100 coupled to one end of the 100).

First, the first fixed body 100 has a gas supply pipe 111 formed inside, and a needle valve 112 that controls the supply of gas by opening and closing the gas supply pipe 111 is installed on the inner peripheral surface. You can. In addition, the first fixing body 100 is provided with a coupling portion 200 for coupling to the receptacle on one outer peripheral surface, and a first fixing groove 113 and a second fixing groove 113 along the circumferential direction on the outer peripheral surface adjacent to the coupling portion 200. A fixing groove 114 may be formed.

The second fixing body 100 is coupled to one end of the first fixing body 100, and a mounting hole 121 into which a receptacle is inserted and coupled may be formed on the inner peripheral surface. That is, after the receptacle is inserted through the mounting hole 121 of the second fixed body 100, one end may contact the needle valve 112 installed in the first fixed body 100. As shown in FIG. 5, a signal input cable 122 for receiving a control signal may be connected to the other end of the second fixed body 100.

Preferably, the needle valve 112 can control whether or not gas is supplied through the gas supply pipe 111 depending on whether the coupling portion 200 and the receptacle are coupled. That is, as shown in FIGS. 3 and 6, the needle valve 112 is a receptacle when the moving body 300 moves in the first direction and the locking member 312 is inserted into the first fixing groove 113. It contacts and moves in the second direction and opens one end of the gas supply pipe 111 to supply the gas supplied through the gas supply pipe 111 to the receptacle, and the moving body 300 moves in the second direction to the holding member ( When 312) is inserted into the second fixing groove 114, it moves in the first direction by the third elastic member 112a spaced apart from the receptacle and connected to the other end, and closes one end of the gas supply pipe 111 to open the gas supply pipe (112). The gas supplied through 111) can be blocked.

Meanwhile, as shown in FIGS. 5 and 6, a safety valve 115 is installed on one outer peripheral surface of the first fixed body 110 to enable reciprocating movement in the direction toward the inner peripheral surface of the moving body 300. It can be.

The safety valve 115 is a movable body ( 300) movement can be restricted. At this time, the first fixed body 110 is a support block located adjacent to the safety valve 115 to stably support the safety valve 115 when the safety valve 115 restricts the movement of the movable body 300. (116) can be installed.

As shown in FIG. 6, the safety valve 115 is fixed to one outer peripheral surface of the first fixed body 100, and includes a safety valve body 115a having a through hole formed in a direction toward the inner peripheral surface of the moving body 300, A stopper (115b) is installed to be reciprocatable inside the through hole and contacts or releases contact with the inner peripheral surface of the moving body 300 when reciprocating along the through hole. It may be composed of a first spring 115c that provides elastic force to the stopper 115b when the stopper 115b reciprocates.

In Figure 7 (a), the safety valve 115 is shown when the moving body 300 moves in the first direction and the locking member 312 is inserted into the first fixing groove 113, and in Figure 7 (b) shows the safety valve 115 when the moving body 300 moves in the second direction and the locking member 312 is inserted into the second fixing groove 114.

First, as shown in (a) of FIG. 7, the safety valve 115 operates when the moving body 300 moves in the first direction and the locking member 312 is inserted into the first fixing groove 113, The pressure of the gas supplied through the gas supply pipe 111 may contact the inner circumferential surface of the moving body 300 to restrict the movement of the moving body 300.

That is, when the moving body 300 moves in the first direction and the locking member 312 is inserted into the first fixing groove 113, the stopper 115b responds to the pressure of the gas supplied through the gas supply pipe 111. As a result, it moves upward along the through hole of the safety valve body 115a and is caught by the stop member 314 provided on the inner peripheral surface of the movable body 300, thereby restricting the movement of the movable body 300.

On the contrary, as shown in (b) of FIG. 7, the safety valve 115 moves when the moving body 300 moves in the second direction and the locking member 312 is inserted into the second fixing groove 114. , it may return by elastic force and be released from contact with the moving body 300, allowing the moving body 300 to move.

That is, when the moving body 300 moves in the second direction and the locking member 312 is inserted into the second fixing groove 114, the stopper 115b blocks the gas supplied to the gas supply pipe 111. Due to the elastic force of the first spring 115c, it returns downward and is separated from the stop member 314 of the movable body 300, thereby restricting the movement of the movable body 300.

Hereinafter, with reference to FIGS. 8 and 9, the structure and operation of the coupling portion 200 constituting the gas charging nozzle 1 according to an embodiment of the present invention will be described in detail.

Figure 8 is an exploded perspective view showing the structure of the coupling part constituting the gas charging nozzle according to an embodiment of the present invention, and Figure 9 is a diagram showing the operation of the coupling part constituting the gas charging nozzle according to an embodiment of the present invention. .

As shown in FIG. 8, the coupling portion 200 may be configured to include a plurality of coupling members 210 and an elastic member 220. In addition, Figure 9(a) shows the coupling member 210 when the moving body 300 moves in the first direction, and Figure 9(b) shows the moving body 300 moving in the second direction. This shows the appearance of the coupling member 210.

First, the coupling members 210 are preferably disposed radially at predetermined intervals along the circumferential direction with the receptacle at one end of the fixing body 100 as the center. Accordingly, since the plurality of coupling members 210 can be coupled at regular intervals and forces along the outer peripheral surface of the receptacle, the coupling portion 200 can be stably and firmly coupled to the receptacle. Figure 8 shows an example in which four coupling members 210 are radially installed at 90-degree intervals along the circumferential direction on the outer peripheral surface of the fixing body 100. However, the number and arrangement of the coupling members 210 can be determined by those skilled in the art. It can be changed at any time by .

As shown in FIG. 8, the coupling member 210 has a jaw-shaped protrusion 211 formed at one end in a direction toward the receptacle, and is connected to the fixing body 100 through a hinge groove 212 formed at the other end. It can be rotatably coupled to one end of the. Accordingly, when the coupling member 210 rotates about the hinge groove 212 at the other end, the protrusion 211 may be coupled to or disengaged from the groove formed at one end of the receptacle.

Additionally, the elastic member 220 is connected to the hinge groove 212 formed at the other end of each of the plurality of coupling members 210, and may provide elastic force to each of the plurality of coupling members 210. Preferably, as shown in FIG. 8, the elastic member 220 is inserted into the hinge groove 212 formed in each of the plurality of coupling members 210 along the circumferential direction at one end of the first fixing body 100. It may have a ring shape made of elastic material.

Accordingly, the elastic member 220 moves the other end of each of the plurality of coupling members 210 a certain distance toward the inside of the first fixing body 100 by the elastic force contracting toward the inside of the first fixing body 100. As a result, one end of each of the plurality of coupling members 210 protrudes toward the outside of the first fixing body 100, and consequently serves to rotate each of the plurality of coupling members 210 about the hinge groove 212. It can be done.

That is, as shown in (a) of FIG. 9, the plurality of coupling members 210 contact one end of the moving body 300 when the moving body 300 moves in the first direction and move in a direction toward the receptacle (Figure In the example of (a) of 9, it rotates counterclockwise and is coupled to the receptacle, and as shown in (b) of FIG. 9, when the moving body 300 moves in the second direction, the moving body 300 It may be spaced apart from one end and rotated in a direction away from the receptacle (clockwise in the example of FIG. 9(b) ) by the elastic member 220 to be disconnected from the receptacle.

Hereinafter, with reference to FIG. 10, the structure and operation of the moving body 300 constituting the gas charging nozzle 1 according to an embodiment of the present invention will be described in detail.

Figure 10 is an exploded perspective view showing the structure of a moving body constituting a gas charging nozzle according to an embodiment of the present invention.

As shown in FIG. 10, the moving body 300 has an internal receiving space formed to surround the fixed body 100, and is inserted into the first fixing groove 113 and the second fixing groove 114 on the outer peripheral surface. A locking member 312 that can be inserted and released may be installed. Additionally, the moving body 300 may be provided with a stopping member 314 on the inner peripheral surface with which the stopper 115b of the safety valve 115 contacts.

In Figure 10, the moving body 300 surrounds the fixed body 100 and a plurality of locking members 312 are installed on the outer peripheral surface, and when moving in the first direction toward the receptacle, one end of the locking member 312 of the coupling portion 200 ( It shows an example consisting of a second movable body 320 that is coupled to the first movable body 310 when fastened to h1).

At this time, as shown in FIGS. 9 and 10, the first moving body 310 moves in the first direction toward the receptacle and when one end contacts the locking member 312 of the engaging portion 200, the first moving body 310 moves in the first direction toward the receptacle. A hollow portion may be formed inside to surround the top of (200). In addition, even when the first moving body 310 moves in the second direction and one end is spaced apart from the locking member 312 of the coupling portion 200, the locking member 312 maintains a certain angle range around the hinge groove 212. It may be maintained in contact with the top or other end of the locking member 312 so as to rotate within it.

Preferably, as shown in FIG. 10, a plurality of locking members 312 may be provided at one end of the movable body 300 at predetermined intervals along the circumferential direction. Additionally, each locking member 312 may be inserted into a plurality of locking holes 111 arranged along the circumferential direction of the first movable body 310 and then fixedly coupled to the locking member cap 313. FIG. 10 shows an example in which three locking members 312 are radially installed at intervals of 120 degrees along the circumferential direction on the outer peripheral surface of the movable body 300.

In particular, as shown in FIG. 10, each of the plurality of locking members 312 includes a ball member 312a inserted into the first fixing groove 113 or the second fixing groove 114, and a first fixing groove 113. ) or a second elastic member 312b that provides elastic force to the ball member 312a in the direction toward the second fixing groove 114.

Meanwhile, FIG. 10 shows an example in which the movable body 300 is composed of a first movable body 310 and a second movable body 320 that are coupled to each other, but the present invention is not limited thereto, and the movable body 300 The structure can be changed at any time by those skilled in the art.

Hereinafter, with reference to FIG. 11, the operation of the gas charging nozzle 1 according to an embodiment of the present invention configured as above will be described in detail.

Figure 11 is a longitudinal cross-sectional view showing the operation of a gas charging nozzle according to an embodiment of the present invention.

In (a) of FIG. 11, the side cross-sectional view (section A-A) shown in FIG. 3 shows the state when the locking member 312 of the moving body 300 is inserted into the first fixing groove 113 of the fixed body 100. 11(b) shows that the locking member 312 of the moving body 300 is inserted into the second fixing groove 114 of the fixed body 100 in the side cross-sectional view (section A-A) shown in FIG. 3. It shows what it looked like when it was done.

First, as shown in (a) of FIG. 11, the moving body 300 moves in a first direction toward the receptacle R along the longitudinal direction of the fixed body 100 (in the example of (a) of FIG. 11, When the locking member 312 is inserted into the first fixing groove 113 by moving in the left direction, the engaging member 210 of the engaging portion 200 contacts one end of the moving body 300 to connect the receptacle (R). It rotates in the direction facing (counterclockwise in the example of (a) of FIG. 11), and the protrusion 211 of the coupling member 210 is inserted into the groove formed at one end of the receptacle (R). can be combined with

At this time, as shown in (a) of FIG. 7, the safety valve 115 moves when the moving body 300 moves in the first direction and the locking member 312 is inserted into the first fixing groove 113. , the movement of the mobile body 300 may be restricted by contacting the inner peripheral surface of the mobile body 300 by the pressure of the gas supplied through the gas supply pipe 111.

On the contrary, as shown in (b) of FIG. 11, the moving body 300 moves in a second direction opposite to the first direction along the longitudinal direction of the fixed body 100 (in the example of (b) of FIG. 11). , right direction), when the locking member 312 is inserted into the second fixing groove 114, the engaging member 210 of the engaging portion 200 is spaced apart from one end of the moving body 300, so the elastic member ( 220), it rotates in a direction away from the receptacle (R) (clockwise in the example of Figure 11 (b)), and the protrusion 211 of the coupling member 210 is formed at one end of the receptacle (R). It may be spaced apart from the groove and disengaged from the receptacle (R).

At this time, as shown in (b) of FIG. 7, the safety valve 115 moves when the moving body 300 moves in the second direction and the locking member 312 is inserted into the second fixing groove 114. , it may return by elastic force and be released from contact with the moving body 300, allowing the moving body 300 to move.

Meanwhile, the gas charging nozzle 1 according to an embodiment of the present invention may further include a blocking gas inlet 400 for introducing a blocking gas to prevent internal water vapor from freezing.

As shown in FIGS. 3 and 4, the blocking gas inlet 400 is connected to one side of at least one of the fixed body 100 and the moving body 300 (in the example of FIGS. 3 and 4, the fixed body 100) is connected to the other end), and blocking gas can be introduced into the space formed between the fixed body 100 and the moving body 300.

That is, the blocking gas inlet 400 supplies the blocking gas to the space formed between the fixed body 100 and the moving body 300 to the inside of the gas charging nozzle 1, that is, the fixed body 100 and the moving body 300. Water vapor that has already flowed into the space formed between the bodies 300 can be discharged or water vapor newly flowing into the gas charging nozzle 1 can be blocked. Accordingly, the blocking gas inlet 400 has internal water vapor frozen by the cryogenic gas supplied through the gas supply pipe, preventing the moving body 300 from moving or preventing the plurality of coupling members 210 from being coupled from the receptacle. The problem can be solved.

Figure 12 is a longitudinal cross-sectional view showing blocking gas flowing into the gas charging nozzle according to an embodiment of the present invention.

Figure 12 (a) shows the blocking gas (N) flowing into the space formed between the fixed body 100 and the moving body 300 in the side cross-sectional view (section A-A) shown in Figure 3. 12(b) shows the blocking gas (N) flowing into the space formed between the fixed body 100 and the moving body 300 in the plan cross-sectional view (section B-B) shown in FIG. 4.

Preferably, the blocking gas inlet 400 may introduce the blocking gas into the space formed between the inner peripheral surface of the moving body 300 and the safety valve 115.

As described above, the safety valve 115 restricts the movement of the moving body 300 when the locking member 312 is inserted into the first fixing groove 113 so that the engaging portion 200 is separated from the receptacle (R). This is to prevent the gas charging nozzle (1) from operating properly if the safety valve (115) does not operate properly due to internal water vapor being frozen by cryogenic gas while gas is supplied through the gas supply pipe (111). Problems may arise.

That is, if the safety valve 115 does not operate properly because the internal water vapor is frozen by the cryogenic gas while the gas is supplied through the gas supply pipe 111, the stopper 115b does not move upward and the coupling portion 200 ) may not be prevented from being separated from the receptacle (R), or the stopper (115b) may not move downward, resulting in a problem in which the gas charging nozzle (1) may not be detached from the receptacle (R).

Therefore, the blocking gas inlet 400 introduces the blocking gas to prevent the water vapor around the safety valve 115 from freezing by the cryogenic gas while the gas is supplied through the gas supply pipe 111, so that the stopper 115b moves upward. Alternatively, it can be made to move stably in the downward direction.

Meanwhile, nitrogen gas may be used as a blocking gas used to discharge water vapor that has already flowed into the gas charging nozzle (1) or to block water vapor that newly flows into the gas charging nozzle (1). However, in addition to nitrogen gas, dry air that has been treated to not contain water vapor (moisture) may also be used as the blocking gas.

Additionally, the blocking gas inlet 400 may start supplying the blocking gas (N) before the gas is supplied through the gas supply pipe 111 while the coupling portion 200 is coupled to the receptacle (R). In addition, the blocking gas inlet 400 is provided with a blocking gas ( The supply of N) can be blocked.

Meanwhile, although not shown in detail, a blocking gas outlet for discharging the blocking gas to the outside may be formed on at least one side of the fixed body 100 and the moving body 300. In addition, Figures 3 and 4 show an example in which one blocking gas inlet 400 is connected to the other end of the fixed body 100, but this is not limited to this, and the number, location, and The arrangement form, etc. can be changed as many times as desired by those skilled in the art.

In this way, the gas charging nozzle 1 according to an embodiment of the present invention is attached to the movable body 300 when reciprocating the movable body 300 installed to surround the fixed body 100 on which the gas supply pipe 111 is formed. When the installed locking member 312 is inserted into the first fixing groove 113 and the second fixing groove 114 formed on the fixing body 100, the engaging portion 200 installed on the fixing body 100 is connected to the receptacle (R). By configuring it to be coupled or uncoupled, the gas filling nozzle 1 can be easily and firmly coupled to the receptacle (R) with a simpler structure and operation.

In addition, the gas charging nozzle 1 according to an embodiment of the present invention is operated when the moving body 300 moves and the locking member 312 is inserted into the first fixing groove 113 or the second fixing groove 114. By providing a safety valve 115 to limit the movement of the movable body 300, the movable body 300 moves while gas is supplied through the gas supply pipe 111, and the coupling portion installed on the fixed body 100 Since (200) can be prevented from being separated from the receptacle (R), the safety of the gas charging nozzle (1) can be improved.

In addition, the gas charging nozzle 1 according to an embodiment of the present invention introduces blocking gas into the space formed between the fixed body 100 and the moving body 300 to flow into the interior of the gas charging nozzle 1. By discharging the water vapor or blocking the water vapor flowing into the inside of the gas filling nozzle (1), the inside of the gas filling nozzle (1) is frozen due to cooling of the water vapor by the cryogenic gas supplied through the gas supply pipe (111). Since this phenomenon can be prevented, problems that occur in the process of coupling or uncoupling the gas charging nozzle (1) from the receptacle can be solved.

Meanwhile, the specification and drawings disclose preferred embodiments of the present invention, and although specific terms are used, they are used in a general sense to easily explain the technical content of the present invention and aid understanding of the present invention. It is not intended to limit the scope of the invention. It is obvious to those skilled in the art that in addition to the embodiments disclosed herein, other modifications based on the technical idea of the present invention can be implemented.

<Explanation of symbols for main parts of the drawing>
10: gas charging device 11: gas cooling unit
12: Gas charging part R: Receptacle
1: Gas filling nozzle
100: fixed body 110: first fixed body
111: gas supply pipe 112: needle valve
113: first fixing groove 114: second fixing groove
115: safety valve 116: support block
120: second fixed body 121: mounting hole
122: signal input cable
200: coupling portion 210: coupling member
211: protrusion 212: hinge groove
220: Elastic member
300: moving body 310: first moving body
311: catching hole 312: catching member
313: Locking member cap 320: Second moving body
400: Blocking gas inlet

Claims (6)

In the gas charging nozzle, which is coupled to a receptacle provided in an external device and fills the gas storage part of the external device with gas,
A fixed body having a gas supply pipe for supplying gas therein and having at least one first fixing groove and at least one second fixing groove spaced apart along the longitudinal direction on the outer circumferential surface;
A coupling portion installed at one end of the fixed body and coupled to or disengaged from a receptacle provided in an external device;
It is installed to be reciprocatable along the longitudinal direction of the fixed body in a state surrounding the fixed body, and when reciprocating along the longitudinal direction of the fixed body, the at least one first fixing groove or the at least one second fixing groove A moving body including at least one locking member that is inserted or de-inserted into; and
It is connected to at least one side of the fixed body and the moving body, and includes a blocking gas inlet for introducing a blocking gas to prevent freezing by the gas into the internal space of the fixed body and the moving body,
The fixed body is,
The gas supply pipe is formed inside, a needle valve that opens and closes the gas supply pipe is installed on the inner peripheral surface, and the coupling portion is installed on the outer peripheral surface, and the at least one A first fixed body having one first fixing groove and the at least one second fixing groove formed thereon, and a safety valve installed on one outer circumferential surface so as to be reciprocally movable in a direction toward the inner circumferential surface of the movable body; and
A second fixing body is coupled to one end of the first fixing body and has a mounting hole formed on an inner circumferential surface into which the receptacle is inserted and coupled,
The safety valve is,
A gas filling nozzle, characterized in that the at least one locking member limits movement of the moving body when inserted into the at least one first fixing groove or the at least one second fixing groove. delete According to claim 1,
The needle valve is,
When the movable body moves in a first direction toward the receptacle and the at least one engaging member is inserted into the at least one first fixing groove, it contacts the receptacle and moves in a second direction opposite to the first direction. moves and opens one end of the gas supply pipe to supply the gas supplied through the gas supply pipe to the receptacle;
When the moving body moves in the second direction and the at least one locking member is inserted into the at least one second fixing groove, it moves away from the receptacle in the first direction and closes one end of the gas supply pipe. A gas charging nozzle, characterized in that it blocks the gas supplied through the gas supply pipe. According to claim 1,
The safety valve is,
When the movable body moves in the first direction and the at least one locking member is inserted into the at least one first fixing groove, it contacts the movable body by the pressure of the gas supplied through the gas supply pipe and restricting the movement of the moving body,
When the movable body moves in the second direction and the at least one locking member is inserted into the at least one second fixing groove, it returns by an elastic force and is released from contact with the movable body to allow movement of the movable body. A gas charging nozzle, characterized in that. According to claim 1,
The blocking gas inlet,
A gas charging nozzle, characterized in that the blocking gas is introduced into a space formed between the inner peripheral surface of the moving body and the safety valve. According to claim 1,
The coupling part,
When the movable body moves in a first direction toward the receptacle along the longitudinal direction of the fixed body and the at least one engaging member is inserted into the at least one first fixed groove, it contacts one end of the movable body. Coupled to the receptacle,
When the movable body moves in a second direction opposite to the first direction along the longitudinal direction of the fixed body and the at least one engaging member is inserted into the at least one second fixed groove, one end of the movable body A gas filling nozzle, characterized in that it is spaced apart from and disengaged from the receptacle.

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