KR20160090158A - Two-stage safety valve for portable gas container - Google Patents

Two-stage safety valve for portable gas container Download PDF

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Publication number
KR20160090158A
KR20160090158A KR1020150010098A KR20150010098A KR20160090158A KR 20160090158 A KR20160090158 A KR 20160090158A KR 1020150010098 A KR1020150010098 A KR 1020150010098A KR 20150010098 A KR20150010098 A KR 20150010098A KR 20160090158 A KR20160090158 A KR 20160090158A
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KR
South Korea
Prior art keywords
container
gas
safety
stem
safety member
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KR1020150010098A
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Korean (ko)
Inventor
김종주
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주식회사 상민이엔지
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Priority to KR1020150010098A priority Critical patent/KR20160090158A/en
Publication of KR20160090158A publication Critical patent/KR20160090158A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The present invention relates to a two-stage safety valve for a portable gas container. More particularly, when the pressure in a portable butane gas container becomes excessively high, a two-stage safety valve operates to first extinguish the gas range, To a second-stage safety valve of a portable gas container in which the gas container is prevented from being detonated by discharging the gas container to the outside.
To this end, the present invention provides a mounting structure comprising: a mounting cap which is hermetically fixed to an upper portion of a closed metal cylindrical container and has a central upper portion protruded; A sealing plate provided on a lower surface of the center of the mounting cap; A stem housing having an upper portion closed at a lower portion of the sealing plate and having a space portion and a gas inflow passage at a lower portion thereof; A valve stem for opening and closing the inside of the container with a needle portion having a lower portion extending in the longitudinal direction and having a center and a lower portion formed in a cylindrical shape so as to protrude upward from the mounting cap; A safety member for sealing the inflow passage of the stem housing, discharging gas by the needle portion when the container is used, and opening the inflow passage when the internal pressure is increased; And a sealing member provided around the outer periphery of the safety member for sealing the safety member.

Description

(TWO-STAGE SAFETY VALVE FOR PORTABLE GAS CONTAINER)

The present invention relates to a two-stage safety valve for a portable gas container. More particularly, when the pressure in a portable butane gas container becomes excessively high, a two-stage safety valve operates to first extinguish the gas range, To a second-stage safety valve of a portable gas container in which the gas container is prevented from being detonated by discharging the gas container to the outside.

Strengthening safety measures for portable gas ranges has been steadily continuing, but the explosion has not been reduced.

Approximately 3.2 million portable gas ranges are produced annually, and it is estimated that about 16 million units are currently being used.

The number of portable gas range explosions has risen to 124 in the last five years, accounting for 19% of all gas explosions. In particular, the casualties are two deaths for five years and 186 injuries.

Such an accident may not have occurred by installing an explosion-proof device in a portable gas range.

Portable gas range safeguards have been equipped with a container decoupling safety device for over 30 years.

However, this device has the problem that the overpressure cutoff is possible, but the pressure rise inside the butane gas container, which is the source of the explosion, can not be prevented.

A safety device that can solve this problem is a secondary safety device using a discharge valve released by the Gas Safety Research Institute in 2009.

The secondary safety device causes the can pressure drop due to gas discharge just before the explosion of the butane can, and can be used with the existing container detachable primary safety device.

According to actual experiments, it is a safety-optimized device that does not explode even when using a portable gas stove on a brioche fire.

Conventional dual safety device technologies include a spring type (Korean Patent No. 10-1346545) and a Countersink Release Valve (CRV) type (Korean Patent No. 10-1292010).

FIG. 1 is a representative view of a spring system of Korean Patent No. 10-1346545. As shown in FIG. 1, a vertical portion 11 formed in an elbow shape and having a space portion 11a formed therein, a vertical portion 11, And a horizontal portion 12 extending horizontally from the lower end of the main housing 10 and the sub-housing 50 parallel to the vertical portion 11 by the main housing 10 and the connecting rib 70 And an upper end of the overpressure gas passage 50a communicates with the horizontal portion 12 of the main housing 10 by the overpressure gas inlet hole 12a, ,

Inserting the valve stem assembly into the vertical portion (11) of the main housing (10); Inserting the safety valve (60) into the sub-housing (50); Positioning the center of the fixing groove (3a) of the main housing (10) and the center of the notch formed in the mounting cap (3); Pressing the vertical portion of the main housing 10 into the fixing groove 3a of the mounting cap 3; And pressing the outer periphery of the fixing groove with a crimping means composed of a plurality of pneumatically operated arms to fix the mounting cap to the vertical portion,

In the step of inserting the safety valve 60 into the sub housing 50, the safety valve 60 includes an opening and closing member 61 for opening and closing the over-pressure gas inflow hole 12a in the sub-housing 50, And inserting a compression spring fixing plate 63 having a hole 63a at the center thereof on the compression spring 62 so that the outer circumferential surface of the fixing plate 63 is inserted into the sub housing 50, Is fixed to the inner surface of the sub-housing (50) at the position when the spring fixing plate (63) is press-fitted until the elastic force of the compression spring (62) becomes a certain reference value, And inserting a gas tight gasket (64) on an upper portion of the gas barrier container (50).

FIG. 2 is a representative view of the CRV system of Korean Patent No. 10-1292010. As shown in FIG. 2, a gas is ejected through a valve stem installed through a central portion of a mounting cup coupled to an upper end of a container, A safety valve mounted on a portable gas container for discharging overpressure gas in a container through a safety valve formed separately from a valve stem when a pressure becomes higher than a prescribed pressure,

The safety valve includes a safety valve housing having a through hole formed at a lower end thereof and fixed to the upper surface of the mounting cup by welding to a lower surface of the mounting cup where the high pressure gas discharge hole is formed. A stopper having an outer circumferential surface screwed with an inner circumferential surface of the safety valve housing and having a through hole formed at a central portion thereof in a vertical direction; A shaft inserted into the through hole of the stopper such that the upper end thereof is over the upper end of the stopper and the lower end thereof is inserted through the through hole formed in the safety valve housing; A spring fitted to the shaft; A supporting member positioned over the upper end of the outward protrusion formed at the lower portion of the shaft, the upper end being positioned at the lower end of the spring; And a gasket which is fitted to the lower end of the shaft and has an upper end abutting against the lower end of the outward protruding portion and a lower portion located so as to close between the portion where the through hole of the safety valve housing is formed and the shaft. A two-stage safety valve is disclosed.

However, when the explosion-proof gas valve or the safety valve is installed in the gas range and is used, a large amount of gas is suddenly discharged in a state where the flame of the gas range is not extinguished, The problem that a large amount of gas ejected to the outside of the container comes into contact with the flame of the gas range and burns to thereby cause a secondary accident such as a fire or a burn to the user is still not solved.

1. Korean Patent No. 10-1346545 (2013, 12.23) 2. Korean Patent No. 10-1292010 (2013.08.01)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a gas- The present invention provides a safety valve for a portable gas container that prevents a secondary fire caused by a gas emitted by the gas.

It is another object of the present invention to provide a two-stage safety valve for a portable gas container, which prevents overpressure gas from being discharged to the outside of the container to prevent the gas container from exploding when the pressure in the portable gas container filled with butane gas becomes excessively high.

A two-stage safety valve of a portable gas container according to the present invention comprises: a mounting cap sealingly fixed to an upper portion of a closed metallic cylindrical container and having a central upper portion protruded; A sealing plate provided on a lower surface of the center of the mounting cap; A stem housing having an upper portion closed at a lower portion of the sealing plate and having a space portion and a gas inflow passage at a lower portion thereof; A valve stem for opening and closing the inside of the container with a needle portion having a lower portion extending in the longitudinal direction and having a center and a lower portion formed in a cylindrical shape so as to protrude upward from the mounting cap; A safety member for sealing the inflow passage of the stem housing, discharging gas by the needle portion when the container is used, and opening the inflow passage when the internal pressure is increased; And a sealing member provided around the outer periphery of the safety member for sealing the safety member.

In the present invention, the valve stem portion is supported by a support spring, and an outlet for discharging gas to the outside is provided on the inside of the upper portion. A first stem discharge port communicating with the discharge port and bent in the " And a lower end of the needle portion may have a trapezoidal shape with a lower portion to penetrate the safety member like a needle.

According to the present invention, it is preferable that a second stem discharge port communicates with the discharge port at a center outside the valve stem.

In the present invention, it is preferable that the safety member has a large upper portion to close the inflow passage, a central portion to protrude downward, to be positioned in the upper portion of the inflow passage, and a stem discharge groove to be provided at the lower central portion.

In the present invention, it is preferable that the safety member is made of soft synthetic resin or silicone.

In the present invention, when the pressure in the container rises from 12 kg to 13 kg / cm < 2 >, the safety member ascends to the upper side in a state in which the inflow path is hermetically closed. .

In the present invention, it is preferable that a protective cap is further provided around the lower portion of the safety member.

In the present invention, it is preferable that the sealing member is formed in a ring shape having a predetermined height on the outer circumferential surface of the safety member so that the inflow passage is sealed by the sealing member to a certain height when the safety member is raised by the pressure of the container Do.

In the present invention, the sealing member is formed in a cylindrical shape to seal the outer circumferential surface of the safety member, the upper portion of which is closed by the sealing plate, the discharge groove is recessed inside the lower end, As shown in FIG.

The two-stage safety valve of the portable gas container according to the present invention is characterized in that when the pressure in the gas container becomes excessively high due to an increase in the temperature of the outside of the gas container, the first stem opening is blocked by the rise of the safety member of the safety valve in one step There is an excellent effect that the gas range is extinguished and the risk of fire or the risk of burn is primarily blocked and the container can be used when the pressure is relieved.

Further, when the pressure in the container further rises, the inflow passage is opened by the rise of the safety member of the safety valve in two steps, and the overpressure in the container is released to the outside, so that the accident caused by the explosion of the portable gas container can be prevented There is an excellent effect.

In addition, since only the valve stem portion of the existing portable gas container can be used for replacement, there is an excellent effect that it can be easily applied to existing portable gas containers.

1 and 2 are representative views showing a safety valve of a conventional portable gas container.
FIG. 3 is a sectional view of the two-stage safety valve according to the first embodiment of the present invention in a state in which it is mounted in a portable butane gas container. FIG.
FIG. 4 is an enlarged cross-sectional view showing a state in which the butane gas is normally sprayed by mounting the safety valve of FIG. 3 on the gas range; FIG.
FIG. 5 is an enlarged cross-sectional view showing a main part of the vessel shown in FIG. 4, in which a gas overflow in the vessel is shut off when an overpressure is generated. FIG.
Fig. 6 is an enlarged cross-sectional view of the main part showing a state in which the gas in the container is secondarily discharged to the outside of the container when the overpressure is further raised in the container in Fig. 5; Fig.
FIG. 7 is a sectional view of a state in which a two-stage safety valve according to a second embodiment of the present invention is mounted on a portable butane gas container. FIG.
8 is an enlarged cross-sectional view showing a state in which the butane gas is normally sprayed by mounting the safety valve of Fig. 7 on the gas range.
Fig. 9 is an enlarged cross-sectional view of the main part showing a state in which the gas ejection in the container is shut off when overpressure is generated in the container of Fig. 8; Fig.
Fig. 10 is an enlarged cross-sectional view of a main portion showing a state in which gas in the container is secondarily discharged to the outside of the container when the overpressure is further raised in the container in Fig. 9; Fig.
11 is an enlarged cross-sectional view showing a third embodiment of the present invention.
12 is a sectional view showing another embodiment of the safety member according to the present invention.

Hereinafter, the two-stage safety valve of the portable gas container of the present invention will be described in detail with reference to the drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

3, the safety valve 100 according to the first embodiment of the present invention includes a mounting cap MC, a sealing plate 102, a stem housing 104, a valve stem 120, a safety member 140) sealing member (160).

The mounting cap MC is hermetically fixed to the upper portion of the closed metallic cylindrical container C. The center portion is recessed, the center of the depression is protruded, and a through hole is formed at the center of the protrusion.

The sealing plate 102 is formed in a donut shape having a through hole at the center of the container at the center protruding portion of the mounting cap MC and is made of a synthetic rubber material of an elastic material which does not change physical properties of the gas component of the container C Do.

The stem housing 104 is hermetically closed at the bottom of the sealing plate 102 and includes a space portion 106 and a gas inflow passage 108 at a lower portion thereof.

The valve stem 120 is formed in a cylindrical shape so that an upper portion protrudes from the mounting cap MC. The valve stem 120 has a multi-stage center and a needle portion extending downward in the longitudinal direction. And is opened and closed.

The valve stem 120 may be supported by a support spring provided in a space of the stem housing.

In order to achieve this, it is preferable that the center of the valve stem 120 is formed as a body, and a support spring is coupled to a lower portion of the body.

The valve stem 120 is provided with a discharge port 122 for discharging the gas to the outside and a first stem discharge port communicating with the discharge port and being bent in a "? &Quot; shape at the end of the needle portion 124 126 are preferably provided.

In addition, it is preferable that a second stem discharge port 128 is provided at the center of the valve stem 120 so as to communicate with the discharge port 122.

In addition, the lower end of the needle part 124 may have a narrow trapezoidal shape to penetrate the safety member 140 like a needle.

The safety member 140 closes the inflow path 108 of the stem housing 104 and discharges the gas by the needle 124 when the container is used and opens the inflow path 108 when the internal pressure is increased And has a round cap shape.

It is preferable that the safety member has a large upper portion so that the inflow passage 108 is closed and the center thereof is protruded downward and positioned in the upper portion of the inflow passage 108 and the stem discharge groove 142 is provided in the lower central side .

In addition, the safety member 140 is preferably made of soft synthetic resin or silicone.

The sealing member 160 is formed in a ring shape having a predetermined height on the outer circumferential surface of the safety member 140 so that the safety member 140 can seal the sealing member 160 The inflow path 108 is closed.

In addition, it is preferable that the sealing member 160 is attached to the upper surface of the inflow path of the stem housing 104 and is made of synthetic resin or rubber material which is easy to seal.

The coupling relationship and the operating relationship of the two-stage safety valve of the portable gas container of the first embodiment according to the present invention will be described in detail as follows.

As shown in FIG. 3, the sealing plate 102 is hermetically fixed to the inner lower portion of the mounting cap MC.

An upper portion of the valve stem 120 is inserted into the center of the sealing plate 102 so as to protrude outward.

At this time, the support spring 110 is coupled to the lower part of the multi-stage body at the center of the valve stem 120.

The support spring 110 presses the upper portion of the safety member 140 in a state where the safety member 140 is seated on the upper portion of the inflow path of the stem housing 104.

In addition, the ends of the needle portions 124 of the valve stem 120 are positioned at the upper center of the safety member and are engaged with each other in a contact state.

Therefore, the valve stem 120 is formed to have a predetermined height by the support spring 110, so that the needle part 124 is in contact with the upper part of the safety member 140, and by the support spring 110 The safety member 140 is pressed to seal the inflow passage 108 of the stem housing 104. [

In addition, a safety member is positively positioned at the center of the sealing member 160 attached or fitted to the upper portion of the inflow passage 108 of the stem housing 104.

The mounting cap MC is hermetically fixed to the upper portion of the container.

The safety valve 100, which is hermetically sealed as described above, is normally in an airtight state as shown in FIG.

4, when the valve stem 120 is pressed by the portable gas stove, the needle portion 124 of the valve stem 120 enters the upper portion of the soft safety member 140, The stem discharge groove 142 of the needle portion 140 and the first stem discharge port 126 of the needle portion 124 are communicated with each other.

Therefore, the gas introduced from the stem discharge groove 142 is discharged to the outside by the discharge part 122 through the first stem discharge port 126 of the valve stem part 120, so that the portable gas stove It can be easily used.

5, when the temperature and the pressure in the container C increase from 12 kg to 13 kg / cm 2, the safety member 140 rises to the top due to the pressure in the container C.

The needle portion 124 of the valve stem 120 further penetrates the safety member 140 so that the stem discharge groove 142 of the safety member 140 and the first stem discharge hole 126 of the needle portion 124 are in contact with each other, The gas flowing in the stem discharge groove 142 is blocked.

At this time, since the safety member 140 is not completely separated from the sealing member 160, the safety member 140 and the sealing member 160 are sealed to each other to block the gas discharge of the container.

Therefore, the sealing of the needle part is blocked by the sealing of the gas in the container, so that the portable gas stove is extinguished.

Therefore, the risk of fire and burn can be prevented by the continuous discharge of the gas.

In addition, since it is possible to convey the abnormality of the container due to the sudden digestion of the gas range, the user can be warned in advance.

Furthermore, the pressure in the container is relieved by the extinguishing of the gas stove and the operation of the user, and the safety member is lowered again by the support spring, so that the portable gas container can be reused.

6, when the temperature and the pressure in the container are over-pressure of 15 kg / min or more, the safety member 140 is further raised so that the safety member 140 disengages the sealing member 160, The flow path 108 is opened.

At this time, it is more preferable that the needle part 124 of the valve stem 120 and the safety member 140 are not completely penetrated.

Of course, the needle part 124 may completely penetrate the safety member 140 when more overpressure is generated.

When the inflow passage 108 is opened by the rising of the safety member 140 as described above, the overpressure gas discharged from the inflow passage is introduced into the second discharge port 128 of the valve stem 120, ).

Therefore, when an overpressure due to abnormally high temperature occurs in the inside of the container (C), the safety valve of the second stage of the portable gas container according to the present invention firstly closes the first stem outlet of the needle part The gas supply is cut off to extinguish the gas range. When the pressure in the gas container C further increases, the overpressure is secondarily discharged to the outside by the escape of the safety member, so that the explosion does not occur.

In addition, the structure of the two-stage safety valve of the portable gas container of the present invention can be safely burned without explosion by burning in the gas which is gradually sprayed even when the container C is thrown into the flame or incinerator in a state where the remaining amount remains.

FIG. 7 is a sectional view showing a state where a two-stage safety valve according to a second embodiment of the present invention is mounted on a portable butane gas container, FIG. 8 is a cross- Fig. 9 is an enlarged cross-sectional view of the main portion showing a state in which the gas ejection in the container is shut off when overpressure is generated in the container of Fig. 8, and Fig. 10 is an enlarged cross- Fig. 3 is an enlarged cross-sectional view showing a state in which the gas in the container is secondarily discharged to the outside of the container when the overpressure is further increased.

Hereinafter, a second embodiment according to the present invention will be described in detail with reference to the drawings.

As shown in the drawings, the safety valve according to the second embodiment of the present invention is structured and operated in relation to the safety valve according to the first embodiment of the present invention, and a detailed description thereof will be omitted.

7 to 10, the sealing plate 102 and the upper portion of the valve stem 120 are separated from each other to form a predetermined space 102-1, and the center of the valve stem is formed in a multi- And is supported by the support spring 110 so as to be spaced apart from the safety member 140 by a predetermined distance.

The sealing member 200 for sealing the safety member 140 is formed in a cylindrical shape to seal the outer circumferential surface of the safety member 140 so that the upper portion is closed by the sealing plate 102, A discharge groove 204 is provided in the lower end inside and a lower end of the discharge groove 204 is aligned with the upper part of the inflow path 108 by a step 206. [

The valve stem 120 is supported by the support spring 110 in the space 202 of the sealing member 200 and the second support spring 210 is provided outside the support spring 110 So that the sealing plate 102 and the upper portion of the safety member 140 are pressed.

The second embodiment of the present invention, which is provided as described above, performs as much as the first embodiment of the present invention.

9, the valve stem 120, the safety member 140, the sealing member 200, and the sealing member 200 are lifted up until the discharge groove 204 provided in the sealing member 200 when the primary gas is shut off, The discharge of the primary gas is easily blocked.

As shown in FIG. 10, when the overpressure gas is discharged by the secondary overpressure, the safety member 140 is accommodated in the discharge groove 204 provided in the sealing member 200, And is easily discharged through the space 102-1 formed between the sealing plate 102 and the valve stem 120. [

Fig. 11 is an enlarged cross-sectional view showing a third embodiment of the present invention. As shown in Fig. 11, the configuration and operating relationship of the safety valve according to the third embodiment of the present invention are the same as those of the second embodiment A detailed description thereof will be omitted.

However, as shown in FIG. 11, a second stem outlet is further provided at the center of the valve stem provided in the second embodiment of the present invention, so that it is possible to more easily discharge the overpressure gas when discharged by the second overpressure .

12 is a cross-sectional view showing another embodiment of the safety member according to the present invention. As shown in FIG. 12, the structure and operating relationship of the safety member according to the present invention are similar to those of the first and second embodiments of the present invention A detailed description thereof will be omitted.

However, as shown in FIG. 12, since the hard protective cap 300 is further provided around the outer periphery and the lower periphery of the safety member 140, the soft safety member 140 can be easily protected.

It is to be understood that the present invention is not limited to the above-described embodiment, but may be modified in various other forms without departing from the scope of the present invention as set forth in the appended claims. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

C: container MC: mounting cap
100: safety valve 102: sealing plate
104: stem housing 106:
108: inlet path 110: support spring
120: valve stem part 122:
124: needle portion 126: first stem opening
128: second stem opening 140: safety member
142: Stem opening
160, 200: sealing member
202: Space part 204: Discharge groove
206: step 210: second support spring
300: protective cap

Claims (9)

A mounting cap hermetically fixed to the upper portion of the closed metal cylindrical container and having a central upper portion projecting therefrom;
A sealing plate provided on a lower surface of the center of the mounting cap;
A stem housing having an upper portion closed at a lower portion of the sealing plate and having a space portion and a gas inflow passage at a lower portion thereof;
A valve stem for opening and closing the inside of the container with a needle portion having a lower portion extending in the longitudinal direction and having a center and a lower portion formed in a cylindrical shape with an upper portion protruding from the mounting cap;
A safety member for sealing the inflow passage of the stem housing, discharging gas by the needle portion when the container is used, and opening the inflow passage when the internal pressure is increased;
And a sealing member provided around the outer periphery of the safety member for sealing the safety member.
The method according to claim 1,
Wherein the valve stem is supported by a support spring and includes a discharge port for discharging gas to the outside on the inside of the upper portion and a first stem discharge port communicating with the discharge port and bent to the " And the lower end of the needle portion has a trapezoidal shape with a lower portion to penetrate the safety member like a needle.
3. The method of claim 2,
And a second stem discharge port communicating with the discharge port is provided at a center outer side of the valve stem portion.
The method according to claim 1,
Wherein the safety member has an upper portion that is wide and the inflow passage is closed, a center thereof is protruded downward, and is positioned in an upper portion of the inflow path, and a stem discharge groove is provided on a lower central side.
The method according to claim 1,
Wherein the safety member is made of a soft synthetic resin or a silicone material.
The method according to claim 1,
The safety member is raised upward in a state in which the inflow path is closed when the pressure in the container is increased to 12 kg to 13 kg / cm < 2 >, and when the overpressure is 15 kg / Two-stage safety valve in a portable gas container.
7. The method according to any one of claims 1 to 6,
And a protective cap is further provided around a lower portion of the safety member.
The method according to claim 1,
Wherein the sealing member is formed in a ring shape having a predetermined height on an outer circumferential surface of the safety member, and the inflow passage is sealed by a sealing member to a certain height when the safety member is raised by pressure of the container. 2 stage safety valve.
The method according to claim 1,
The sealing member is formed in a cylindrical shape to seal the outer circumferential surface of the safety member. The upper portion of the sealing member is closed by a sealing plate. The discharge groove is recessed inside the lower end. Features a two-stage safety valve in a portable gas container.
KR1020150010098A 2015-01-21 2015-01-21 Two-stage safety valve for portable gas container KR20160090158A (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
KR20220087062A (en) * 2020-12-17 2022-06-24 주식회사 승일 Aerosol can having overpressure protector and valve assembly thereof

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Publication number Priority date Publication date Assignee Title
KR101292010B1 (en) 2011-06-15 2013-08-01 주식회사 대륙제관 Safety relief valve for portable gas container
KR101346545B1 (en) 2011-09-23 2013-12-31 주식회사 화산 Gas container Valve for preventing gas explosion and its assembly method

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KR101292010B1 (en) 2011-06-15 2013-08-01 주식회사 대륙제관 Safety relief valve for portable gas container
KR101346545B1 (en) 2011-09-23 2013-12-31 주식회사 화산 Gas container Valve for preventing gas explosion and its assembly method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220087062A (en) * 2020-12-17 2022-06-24 주식회사 승일 Aerosol can having overpressure protector and valve assembly thereof

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