KR101165795B1 - Valve for gas container - Google Patents

Abstract

A valve for a gas container is disclosed.

The valve for a gas container according to an embodiment of the present invention includes a valve body, a valve seat member having a gas inlet for gas movement and an inclined seat surface inclined toward the gas inlet, an auxiliary shutoff valve for opening and closing the gas inlet, and an auxiliary shutoff. And a return spring that exerts an elastic force against the valve seat member. The auxiliary shut-off valve may be inserted into the gas inlet port so as to be movable, and a body part having a through hole formed therein, a head part coupled to one end of the body part, and a plurality of spring latches provided to protrude around the head part and in contact with one end of the return spring. Jaw, the flow path groove provided between the spring engaging jaw so that the gas flow, sealing member coupled to the outer surface of the body portion to be in close contact with the inclined seat surface. In the valve for a gas container according to the embodiment of the present invention, even when the return spring is compressed during gas filling, the gas flow is not disturbed, so that the gas can be filled more safely and quickly.

Description

VALVE FOR GAS CONTAINER

The present invention relates to a valve for a gas container, and more particularly to a valve for a gas container that can fill the gas container quickly and safely without disturbing the gas supplied from the gas charger during gas filling.

In general, a gas container for storing gas such as LPG, LPG, CNG, etc. has a valve exposed to the outside so that the user can open and close the discharge port through which the gas is discharged. . The valve for the gas container is made of a structure that can be filled with gas again when the gas in the gas container is exhausted.

In the case of a valve for a gas container for storing liquefied petroleum gas, a gas charger is connected to a connection portion to which a supply tube is connected to fill a gas. Since the gas container storing the liquefied petroleum gas is supplied to the user after the gas is filled in the gas filling station, the connection and disconnection of the supply tube or the gas charger occurs repeatedly at the connection part of the valve for the gas container. Therefore, the valve for the gas container is such that the gas flow path inside the connection can be closed even if the supply tube or the gas charger is disconnected from the connection.

Korea Registered Utility Model No. 20-381161 (registration date April 11, 2005) discloses a valve for a liquefied petroleum gas container. The valve for a liquefied petroleum gas container disclosed in the above publication opens and closes a valve cylinder coupled to a valve and an opening handle on an upper side thereof, a shutoff valve cylinder connected to a valve cylinder and a gas inlet port, and provided with a connection port, a sleeve having a gas outlet, and a gas outlet port. And a shutoff spring for applying an elastic force toward the sleeve with respect to the shutoff valve.

In the conventional gas container valve, when the supply tube or the gas charger is coupled to the shutoff valve cylinder, the shutoff valve is dropped from the sleeve to open the gas outlet. On the other hand, when the supply tube or the gas charger is separated from the shutoff valve cylinder, the shutoff valve is in close contact with the sleeve by the elastic force of the shutoff spring to seal the gas outlet. When filling gas, gas flows into the gap between the sleeve and the shutoff valve, and then flows from the outside of the shutoff spring to the inside to flow into the gas container.

However, the conventional gas container valve as described above is compressed by the gas pressure is filled when the gas is filled into the gas container. When the blocking spring is compressed, the flow of gas from the outside of the blocking spring is interrupted, so that the gas does not flow smoothly into the gas container.

In addition, when high-pressure gas is continuously supplied in a state where gas flow is disturbed, a safety accident may occur due to high-pressure gas filling.

The present invention is to solve this problem, the gas flow is not disturbed even when the spring is compressed during gas filling, to provide a gas container valve that can be filled more safely and quickly will be.

In addition, the present invention is to provide a valve for a gas container with improved sealing performance for the gas flow path to ensure that the gas leakage when the supply tube or the gas charger is separated.

The valve for a gas container according to an embodiment of the present invention for achieving the above object, a valve seat member having a valve body, a gas inlet for gas movement and an inclined seat surface inclined toward the gas inlet, opening and closing the gas inlet And a return spring for applying an elastic force toward the valve seat member relative to the auxiliary shut-off valve. The valve body may include a container coupling part coupled to a gas container and provided with a first entrance for entering and exiting gas, a connection part connected to an external device and provided with a second entrance for entering and exiting gas, and the first and second entrances. It has a gas flow passage connecting the. The valve seat member is coupled to the interior of the connection portion. The auxiliary shut-off valve may include a body part movably inserted into the gas inlet, a head part coupled to one end of the body part, a plurality of spring latching jaws provided to protrude around the head part, and one end of the return spring contacted; It includes a flow path groove provided between the spring engaging jaw to allow gas to flow, the sealing member coupled to the outer surface of the body portion to be in close contact with the inclined seat surface.

The sealing member may include an edge protruding toward the inclined seat surface.

The inclined seat surface may include a first inclined surface and a second inclined surface having a larger inclination than the first inclined surface, and the second inclined surface may be disposed closer to the gas inlet than the first inclined surface.

The sealing member may be in close contact with the first inclined surface and the second inclined surface.

When the auxiliary shutoff valve is moved toward the valve seat member by the return spring, an edge of the sealing member may be in close contact with the first inclined surface first.

The auxiliary shut-off valve may include an opening formed at the other end of the body portion for gas inflow, a passage provided in the body portion to be connected to the opening for gas movement, and a through hole provided at the periphery of the body portion to be connected to the passage. Can be.

The through hole may be disposed at a position corresponding to the flow path groove.

The auxiliary shut-off valve may include a guide groove provided on the bottom surface of the body portion to extend from the center of the body portion toward the through hole.

The spring catching jaw may be provided in plural so as to be spaced apart from each other around the head, and the flow path groove may be provided between the plurality of spring catching jaws.

The through hole may be disposed at a position corresponding to each of the flow path grooves in the same number as the plurality of flow path grooves.

The valve seat member may include a guide inclined surface inclined toward the gas inlet to guide an external device that enters the connection part to the center of the gas inlet.

In the valve for a gas container according to the embodiment of the present invention, even when the return spring is compressed during gas filling, the gas flow is not disturbed, so that the gas can be filled more safely and quickly.

In addition, in the valve for a gas container according to the present invention, since the edge of the sealing member is in close contact with the inclined seat surface of the valve seat member, the sealing performance is improved.

In addition, the valve for the gas container according to the present invention comprises a first inclined surface inclined seat surface in close contact with the sealing member and a second inclined surface inclined inclined quickly and stably block the flow of gas through the gas inlet. have.

In addition, the gas container valve according to an embodiment of the present invention can be quickly moved because the gap between the valve seat member and the auxiliary shut-off valve to move the gas in the second inclined plane toward the first inclined plane rapidly. .

Hereinafter, with reference to the accompanying drawings, it will be described in detail for the gas container valve according to an embodiment of the present invention.

In describing the present invention, the size or shape of the components shown in the drawings may be exaggerated or simplified for clarity and convenience of description. In addition, terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. These terms are to be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the contents throughout the present specification.

1 is a cross-sectional view showing a gas container valve according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing an auxiliary shut-off valve unit of the gas container valve shown in FIG.

As shown in FIG. 1, the valve 100 for a gas container according to an embodiment of the present invention is coupled to the gas container 200, and a valve body having a gas moving passage 111 through which a gas moves therein is provided. (110), the main shut-off valve 118 is installed inside the valve body 110 to be opened and closed manually to open and close the gas flow passage 111, by acting a spring force to selectively operate the gas flow passage 111 It includes an auxiliary shut-off valve unit 130 that is installed inside the valve body 110 to be sealed.

The valve body 110 includes a container coupling part 112 coupled to the gas container 200, a main shutoff valve receiving part 113 in which the main shutoff valve 118 is slidably received, and a safety valve 124 slides. A safety valve accommodating part 114 which is movably accommodated, and a connection part 115 connected to an external device 300 (see FIG. 5) such as a supply tube for gas supply or a gas charger for gas filling. The auxiliary shut-off valve unit 130 is accommodated in the connection portion 115.

The gas flow passage 111 inside the valve body 110 provides a passage through which gas can move between the gas container 200 and the external device 300 connected to the connection portion 115. The gas flow passage 111 includes a first movement flow passage 111a provided inside the container coupling portion 112 and a second movement flow passage 111b provided inside the connection portion 115. A first entrance 116 connected to the first moving passage 111a is provided at the end of the container coupling portion 112, and a second entrance opening connected to the second moving passage 111b at the end of the connecting portion 115. 117 is provided.

As shown, the main shutoff valve 118 is installed to be movable up and down in the main shutoff valve accommodating part 113. The main shut-off valve 118 opens and closes the connector 120 provided in the main valve seat 119 disposed between the first moving passage 111 a and the second moving passage 111 b while moving up and down. do. When the main shutoff valve 118 is in close contact with the main valve seat 119 to block the connector 120, the gas movement between the first movement channel 111a and the second movement channel 111b is blocked.

The main shutoff valve 118 is manually operated by the knob assembly 121. The knob assembly 121 includes an operating member 122 connected to the main shutoff valve 118 and a rotary knob 123 coupled to one end of the operating member 122 and exposed to the outside of the valve body 110. When the user rotates the rotary knob 123, the operation member 122 screwed to the main shutoff valve receiving portion 113 is raised or lowered to slide the main shutoff valve 118.

When the safety valve 124 is filled with a gas of a predetermined pressure or more inside the gas container, the safety valve 124 is automatically operated to discharge the overcharged gas to the outside. The safety valve 124 is installed to slide left and right inside the safety valve accommodation unit 114. The return spring 126 is disposed inside the safety valve receiver 114 to apply an elastic force to the safety valve seat 125 with respect to the safety valve 124. The safety valve seat 125 is provided with an emergency outlet 127 connected to the gas flow passage 111, and the safety valve 124 is in close contact with the safety valve seat 125 by an elastic force of the return spring 126. Block the outlet 127.

As shown in FIGS. 1 and 2, the auxiliary shut-off valve unit 130 may include a valve seat member 131 screwed into the connection portion 115 and a gas inlet provided at the center of the valve seat member 131. The auxiliary shutoff valve 133 for opening and closing the 132 and the return spring 134 for elastically supporting the auxiliary shutoff valve 133 are included. The auxiliary shutoff valve 133 is in close contact with the valve seat member 131 by the elastic force of the return spring 134 to block the gas inlet 132. In addition, the auxiliary shut-off valve 133 is pushed inward by the external device 300 when the external device 300 enters into the connection portion 115 to open the gas inlet 132.

2 and 3, the sealing member 135 is coupled to the outer circumferential surface of the valve seat member 131 to seal between the inner circumferential surface of the connecting portion 115 and the outer circumferential surface of the valve seat member 131. The sealing member 135 is coupled to the coupling groove 136 provided on the outer circumferential surface of the valve seat member 131. In the center of the valve seat member 131, a gas inlet 132 for entering and exiting a gas is provided in parallel with a moving direction of the gas through the connection part 115.

An inclined seat surface 137 is provided on one side of the valve seat member 131 with a gas inlet 132 interposed therebetween, and a guide inclined surface 138 is provided on the other side thereof. The inclined seat surface 137 is a portion in which the auxiliary shutoff valve 133 is in close contact, and the guide inclined surface 138 is a portion in which the external device 300 coupled to the connection portion 115 is in contact with each other. The guide inclined surface 138 is inclined so that the width thereof becomes narrow toward the gas inlet 132. When an external device 300 such as a supply tube, a gas regulator, or a gas charger is inserted into the connection portion 115, the external device 300 is guided toward the center of the auxiliary shutoff valve 133 along the guide inclined surface 138.

The inclined seat surface 137 is a second inclined surface connected with the first inclined surface 137a connected to one end surface 139 of the valve seat member 131 and the inner wall surface 140 defining a range of the gas inlet 132. 137b. The second inclined surface 137b has a larger inclination than the first inclined surface 137a. The inclined seat surface 137 is a portion in which the sealing member 143 of the auxiliary shutoff valve 133 to be described later is in close contact. In addition, since the inclination of the inclined seat surface 137 is the first inclined surface 137a of the inclination of the second inclined surface 137b, the gap between the valve seat member 131 and the auxiliary shutoff valve 133 is the second inclined surface 137b. In the first inclined surface (137a) toward the rapid expansion is advantageous for gas movement during gas filling.

As shown in Figures 2 to 4, the auxiliary shut-off valve 133 is a hollow body portion 141, the head portion 142 connected to the body portion 141, the sealing coupled to the body portion 141 Member 143. The sealing member 143 is in close contact with the inclined seat surface 137 of the valve seat member 131 to seal between the valve seat member 131 and the auxiliary shutoff valve 133.

An opening 144 is provided at one end of the body 141, and a passage 145 connected to the opening 144 is provided in the body 141 to allow gas to move. In addition, a plurality of through holes 146 connecting the inside and the outside of the body 141 is provided around the body 141. Four through holes 146 are disposed around the body 141 at regular intervals. Gas introduced into the body 141 through the opening 144 may be discharged to the outside through the plurality of through holes 146, and the inside of the body 141 through the plurality of through holes 146. The gas flowing into may be discharged to the outside through the opening 144.

The head portion 142 is a portion connected to the return spring 134 and has a width larger than the width of the body portion 141. The circumference of the head portion 142 is provided with a plurality of spring coupling portion 147 protrudes outward. Although four spring coupling parts 147 are shown as being disposed at regular intervals, the number or arrangement interval of the spring coupling parts 147 may be variously changed. Each spring coupling part 147 is provided with a spring engaging jaw 148, one end of which the return spring 134 contacts. The elastic force of the return spring 134 is applied to the auxiliary shutoff valve 133 through the spring engaging jaw 148. The other end of the return spring 134 is accommodated in the spring seating groove 149 provided in the valve body 110.

A flow path groove 150 through which gas can flow is provided between two spring coupling portions 147 disposed adjacent to each other. When gas moves from the valve seat member 131 toward the main valve seat 119, the gas moves through the flow path groove 150 to the inside of the return spring 134. On the contrary, when gas flows from the main valve seat 119 toward the valve seat member 131, the gas flows through the flow path groove 150 inside the return spring 134 and the body portion 141 of the auxiliary shutoff valve 133. Will move toward). As such, the flow path groove 150 through which gas can move into the return spring 134 is provided around the auxiliary shutoff valve 133, so that the flow of gas when the return spring 134 is compressed as in the related art. No disturbing problem occurs.

As shown in FIGS. 2 to 4, a coupling groove 151 is provided around the body 141 of the auxiliary shutoff valve 133, and a sealing member 143 is coupled to the coupling groove 151. . The sealing member 143 is made of a material capable of elastic deformation, such as rubber or silicone, and has a ring shape. When the sealing member 143 is coupled to the coupling groove 151 of the body portion 141, its outer circumferential surface 143a protrudes more than the circumference of the body portion 141. The circumferential surface 143a and one end surface 143b of the sealing member 143 are disposed almost vertically, and the edge 143c protruding toward the inclined seat surface 137 is provided at the portion where they meet.

As shown in FIG. 3, when the auxiliary shut-off valve 133 is pressed toward the valve seat member 131 by the elastic force of the return spring 134, the edge 143c of the sealing member 143 is inclined seat surface ( 137) and elastically deformed. By the sealing action of the sealing member 143, the flow of gas through the gas inlet 132 is completely blocked.

As shown in FIGS. 2 to 4, the through hole 146 of the body portion 141 is disposed at the center between two spring coupling portions 147 adjacent to each other. This arrangement is to close the passage hole 150 of the through hole 146 and the head portion 142 as close as possible, and smooth the gas flow between the through hole 146 and the flow path groove 150. In addition, in order to facilitate gas flow between the opening 144 of the body 141 and the plurality of through holes 146, the bottom surface 152 inside the body 141 may have a center of the body 141. A plurality of guide grooves 153 extending toward each through hole 146 is provided. The guide groove 153 guides the gas introduced into the body 141 through the opening 144 to each through hole 146 so that the flow of the gas can be made more smoothly.

Hereinafter, with reference to the accompanying drawings will be described the operation of the valve 100 for a gas container according to an embodiment of the present invention. Since the rest of the configuration except for the auxiliary shut-off valve unit 130 is similar to the conventional valve, only the operation of the auxiliary shut-off valve unit 130 will be described below.

As shown in FIG. 3, when no external device is coupled to the connecting portion 115 of the valve body 110, the auxiliary shut-off valve 133 receives the elastic force of the return spring 134 and the valve seat member 131. The gas inlet 132 is sealed. At this time, the sealing member 143 of the auxiliary shut-off valve 133 is in close contact with the inclined seat surface 137 the edge (143c). In addition, the sealing member 143 is in close contact with the inclined seat surface 137 over the first inclined surface 137a and the second inclined surface 137b. When the edge 143c of the sealing member 143 is in close contact with the inclined seat surface 137, the sealing member 143 is elastically deformed and the adhesion of the sealing member 143 is increased to improve the sealing performance.

As shown in FIG. 5, when the external device is coupled to the connecting portion 115, the external device 300 enters the center of the valve seat member 131. At this time, the end of the external device 300 is moved toward the gas inlet 132 along the guide inclined surface 138 of the valve seat member 131 to push the body portion 141 of the auxiliary shut-off valve 133. At this time, the auxiliary shut-off valve 133 is retracted while compressing the return spring 134, the sealing member 143 is spaced apart from the inclined seat surface 137. At least a portion of the plurality of through holes 146 moves away from the inner wall surface 140 of the valve seat member 131 toward the inclined seat surface 137 so that the gas outlet 132 is opened.

When the external device 300 is a gas charger, when the gas is charged, the gas flowing into the connecting portion 115 from the gas charger is introduced into the body 141 through the opening 144 of the auxiliary shutoff valve 133. It is discharged to the outside of the body portion 141 through a plurality of through holes 146. In addition, the gas escaped through the plurality of through holes 146 moves to the plurality of flow path grooves 150 around the auxiliary shutoff valve 133 through a gap between the auxiliary shutoff valve 133 and the inclined seat surface 137. .

At this time, the gap between the valve seat member 131 and the auxiliary shut-off valve 133 is rapidly expanded from the second inclined surface 137b toward the first inclined surface 137a, so that the gas can move quickly toward the flow path groove 150. have. Subsequently, after the gas flows into the return spring 134 through the plurality of flow path grooves 150, the gas moves along the inside of the return spring 134 to move the gas container 200 through the gas flow path 111. Flows into the interior.

 On the other hand, as shown in Figure 6, when the external device 300 exits from the connecting portion 115, the auxiliary shut-off valve 133 is pushed toward the valve seat member 131 by the elastic force of the return spring 134. At this time, while the edge 143c of the sealing member 143 contacts the first inclined surface 137a of the inclined seat surface 137, the movement of gas through the gas inlet 132 is quickly blocked. When the external force by the external device 300 is completely removed, as shown in FIG. 3, the plurality of through holes 146 are located inside the inner wall surface 140 of the valve seat member 131, and the sealing member 143 is It is in close contact with the first inclined surface 137a and the second inclined surface 137b. Therefore, the movement of the gas through the gas inlet 132 is completely blocked.

As described above, the gas container valve 100 according to the present invention can be charged more safely and quickly without disturbing the flow of gas even if the return spring 134 is compressed during gas filling.

In addition, since the sealing member 143 is elastically deformed and the valve 100 for gas container according to the present invention is in close contact with the inclined inclined seat surface 137 of the valve seat member 131, the sealing performance is improved.

In addition, the gas container valve 100 according to the present invention is the inclined seat surface 137 to which the sealing member 143 is in close contact with the inclined first inclined surface 137a and the inclined second inclined surface 137b. By doing so, it is possible to quickly and stably block the flow of gas through the gas inlet 132.

In addition, in the valve 100 for gas container according to the present invention, a gap in which gas between the valve seat member 131 and the auxiliary shut-off valve 133 moves can be moved from the second inclined surface 137b to the first inclined surface 137a. As it expands rapidly, the gas can move quickly.

On the other hand, Figure 7 shows a modified embodiment of the valve seat member 131.

In the valve seat member 131 illustrated in FIG. 7, the inclined seat surface 137 ′ in which the sealing member 143 of the auxiliary shutoff valve 133 is in close contact is formed of one inclined surface. In this embodiment as well, the edge 143c of the sealing member 143 is elastically deformed while being in close contact with the inclined seat surface 137 ', thereby improving the sealing performance.

Embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Accordingly, these modifications and variations are intended to fall within the scope of the present invention as long as it is obvious to those skilled in the art.

1 is a cross-sectional view showing a valve for a gas container according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating the secondary shutoff valve unit of the gas container valve according to an embodiment of the present invention. FIG.

3 is an enlarged view of a portion of FIG. 1.

Figure 4 is a plan view showing an auxiliary shutoff valve of the valve for a gas container according to an embodiment of the present invention.

5 and 6 are for explaining the operation of the auxiliary shut-off valve of the valve for the gas container according to an embodiment of the present invention.

Figure 7 shows a modified embodiment of the valve seat member included in the valve for the gas container according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100 gas valve 110 valve body

111 gas flow path 112 container coupling portion

113: main shutoff valve accommodating portion 114: safety valve accommodating portion

115: connection part 116, 117: 1st, 2nd entrance

118: main shutoff valve 119: main valve seat

121 knob assembly 123 rotary knob

124: safety valve 130: auxiliary shut-off valve assembly

131: valve seat member 132: gas inlet

133: auxiliary shutoff valve 134: return spring

135, 143: sealing member 137, 137 ': inclined seat surface

137a, 137b: first and second inclined surfaces 138: guide inclined surfaces

140: inner wall surface 141: body portion

142: head portion 144: opening

145 passageway 146 through hole

148: spring stopping jaw 150: euro groove

152: Bottom surface 153: Guide groove

Claims (12)

A container coupling portion coupled to the gas container and provided with a first entrance for entering and exiting gas, a connection portion connected to an external device and provided with a second entrance for entering and exiting gas, and a gas movement connecting the first entrance and the second entrance. A valve body having a flow path; A valve seat member coupled to the connection part and having a gas inlet for gas movement and an inclined seat surface inclined toward the gas inlet at one end thereof; A body part having an opening which is movably inserted into the gas inlet and has an opening provided at one end for gas inflow and a passage connected to the opening for gas movement, and a through hole provided around the passage to be connected to the passage; Head portion coupled to the other end, a plurality of spring engaging jaw is provided to protrude around the head portion, a flow path groove provided between the plurality of spring engaging jaw so that gas can flow, the inclined seat surface An auxiliary shut-off valve including a sealing member coupled to an outer surface of the body part to allow the body to be sealed; And And a return spring having one end contacting the plurality of spring latching jaws to apply an elastic force toward the valve seat member with respect to the auxiliary shutoff valve. The flow path groove is a gas container valve, characterized in that connected to the inner space of the return spring. The method of claim 1, The sealing member is a gas container valve characterized in that it comprises a corner protruding toward the inclined seat surface. 3. The method according to claim 1 or 2, The inclined seat surface is inclined toward the gas inlet from the first inclined surface and the first inclined surface at one end of the valve seat member facing the plurality of spring engaging jaws and inclined toward the gas inlet from the first inclined surface. And a second inclined surface disposed close to the entrance and exit, wherein the inclination of the second inclined surface is greater than the inclination of the first inclined surface with respect to one end surface of the valve seat member. delete The method of claim 3, wherein The sealing member is a gas container valve, characterized in that in close contact over the first inclined surface and the second inclined surface. 6. The method of claim 5, And the edge of the sealing member comes into close contact with the first inclined surface when the auxiliary shut-off valve is moved toward the valve seat member by the return spring. delete The method of claim 1, The through hole is a gas container valve, characterized in that disposed in the position corresponding to the flow path groove. The method of claim 1, The auxiliary shut-off valve is a gas container valve, characterized in that it comprises a guide groove provided in the bottom surface inside the body portion to extend from the center of the body portion toward the through hole. The method of claim 1, The spring latching jaw is provided with a plurality so as to be spaced apart from each other around the head portion, the flow path groove is provided between the plurality of spring engaging jaw is provided for a gas container valve. 11. The method of claim 10, The through-hole is a gas container valve, characterized in that arranged in a position corresponding to the plurality of flow path grooves the same number as the plurality of flow path grooves. The method of claim 1, The valve seat member is a valve for a gas container, characterized in that it comprises a guide inclined surface inclined toward the gas outlet for guiding the external device entering the interior of the connection portion to the center of the gas outlet.

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