JPH0212399Y2 - - Google Patents
Info
- Publication number
- JPH0212399Y2 JPH0212399Y2 JP2254883U JP2254883U JPH0212399Y2 JP H0212399 Y2 JPH0212399 Y2 JP H0212399Y2 JP 2254883 U JP2254883 U JP 2254883U JP 2254883 U JP2254883 U JP 2254883U JP H0212399 Y2 JPH0212399 Y2 JP H0212399Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- sliding
- locking member
- pressure
- gas flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 239000007789 gas Substances 0.000 description 191
- 238000004891 communication Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Landscapes
- Safety Valves (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
この考案は、LPガス等のガス容器のバルブ出
口に取付けられ、大規模地震や豪雪、台風による
ガス容器の転倒、または落石、落雪などの落下物
による衝撃などによつてガス供給設備の破損事故
が発生した場合に、そのガス流路を遮断し、ガス
容器からのガス放出を阻止して災害を防止するガ
ス放出防止器に関するものである。[Detailed explanation of the invention] "Industrial application field" This invention is installed at the valve outlet of gas containers such as LP gas, and is used to prevent gas containers from falling due to large-scale earthquakes, heavy snowfall, typhoons, falling rocks, falling snow, etc. This product relates to a gas release preventer that prevents disasters by blocking the gas flow path and preventing gas from being released from the gas container in the event that gas supply equipment is damaged due to the impact of a falling object, etc. .
「従来の技術」
従来、上記のようなガス放出防止器として第１
図および第２図に示す構造のものが知られてい
る。図中符号１はガス放出防止器を示し、符号２
はこのガス放出防止器１を構成する管状の本体を
示すものである。この本体２は先端に０−リング
３を有する連結密着部４が形成されている管体５
と、この管体５の基端に圧入されて一体的に連結
されている連結管６とから構成されている。"Conventional technology" Conventionally, the first type of gas release preventer such as the one described above has been used.
Structures shown in FIG. 2 and FIG. 2 are known. In the figure, numeral 1 indicates a gas release preventer, and numeral 2
1 shows a tubular main body constituting this gas release preventer 1. As shown in FIG. This main body 2 has a tube body 5 formed with a connecting contact portion 4 having an O-ring 3 at its tip.
and a connecting pipe 6 which is press-fitted into the proximal end of the tubular body 5 and is integrally connected thereto.
上記管体５の連結密着部４と、上記管体５と連
結管６との連結部の間の管体５外周面上にはこの
周面に沿う凹部７が形成されており、この凹部７
には周方向に開店自在に連結用連結用螺結管８が
外嵌されている。この連結用連結用螺結管８の外
周面前部（以下、雄螺子部８ａと称す）には雄螺
子が刻設され、同外周面の後部８ｂは、例えば図
示のようにナツト状に形成されている。この連結
用連結用螺結管８はこのガス放出防止器１をガス
容器のバルブ出口に連結するためのもので、この
バルブ出口の雌螺子部に上記雄螺子部８ａを螺
合、緊締することによつて連結することができ
る。 A recess 7 is formed along the outer circumferential surface of the tube 5 between the connection contact portion 4 of the tube 5 and the connection portion between the tube 5 and the connecting tube 6.
A connecting screw tube 8 is fitted onto the outside so as to be openable in the circumferential direction. A male thread is carved in the front part of the outer circumferential surface (hereinafter referred to as male thread part 8a) of this connecting screw tube 8, and the rear part 8b of the outer circumferential surface is formed into a nut shape, for example, as shown in the figure. ing. The connecting screw tube 8 is for connecting the gas release preventer 1 to the valve outlet of the gas container, and the male screw portion 8a is screwed into the female screw portion of the valve outlet and tightened. Can be connected by
一方、上記連結管６の基端開口部６ａ（図の右
側）の内側には、雌螺子６ｂが刻設されており、
この連結管６は、高圧ホース２２の端部外周に形
成された雄螺子（図示せず）を雌螺子６ｂに螺合
することによつて高圧ホース２２と連結できるよ
うに形成されている。なお、ホース２２と連結管
６とは、連結管６の内部のテーパ面６ｃあるいは
突き当たり面６ｄなどの部分で０−リングを介在
させて気密的に連結される。 On the other hand, a female screw 6b is carved inside the base end opening 6a (right side in the figure) of the connecting tube 6.
The connecting pipe 6 is formed so that it can be connected to the high-pressure hose 22 by screwing a male screw (not shown) formed on the outer periphery of the end of the high-pressure hose 22 into a female screw 6b. The hose 22 and the connecting pipe 6 are airtightly connected to each other through an O-ring at a tapered surface 6c or an abutment surface 6d inside the connecting pipe 6.
また、上記本体２の中心には、上記管体５内か
ら上記連結管６内にかけて軸方向へ貫通するガス
流通孔９が形成されており、上記管体５内のガス
流通孔９の略中央部には、拡径部１０およびその
前後の流入側段部１１ａと流出側段部１１ｂとが
形成されている。 Further, in the center of the main body 2, a gas circulation hole 9 is formed which penetrates in the axial direction from the inside of the pipe 5 to the inside of the connecting pipe 6. The enlarged diameter portion 10 and an inflow side step portion 11a and an outflow side step portion 11b before and after the enlarged diameter portion 10 are formed in the portion.
上記管体５内のガス流通孔９の中央部分には摺
動閉塞部材１２が摺動自在に挿入され、同基端部
には係止筒体１３が摺動自在に挿入されている。 A sliding closing member 12 is slidably inserted into the central portion of the gas flow hole 9 in the tube body 5, and a locking cylinder 13 is slidably inserted into the base end thereof.
上記摺動閉塞部材１２は、第３図に示すよう
に、先端部が段差を持つて縮径されている円筒状
の摺動筒部１４と、この摺動筒部１４にこの摺動
筒部１４の先端を塞ぐようにして一体に取りつけ
られている中実大径な先端大径部１５とから構成
されている。上記摺動筒部１４の先端部には複数
個の孔１４ａが穿設されており、これら孔１４ａ
の形成によつて上記摺動閉塞部材１２内にガス流
通路１６が形成されている。上記先端大径部１５
は釘の頭部状の中実部分であり、その首部には０
−リング１７が取りつけられている。 As shown in FIG. 3, the sliding closing member 12 includes a cylindrical sliding tube portion 14 whose tip end has a step and a reduced diameter. 14 and a solid large-diameter tip portion 15 that is integrally attached so as to close the tip of the tip portion 14. A plurality of holes 14a are bored at the tip of the sliding tube 14, and these holes 14a
A gas flow passage 16 is formed within the sliding closure member 12 by the formation of the gas flow passage 16 . The large diameter portion 15 at the tip
is a solid part shaped like the head of a nail, and its neck has 0
- the ring 17 is attached;
上記係止筒体１３は、第３図に示すように、そ
の基端外周面にフランジ１３ａが設けられ、その
先端部内周面に係止縮径部１３ｂが形成されてい
る筒状部材である。 As shown in FIG. 3, the locking cylinder 13 is a cylindrical member having a flange 13a on the outer peripheral surface of its proximal end and a locking reduced diameter portion 13b formed on the inner peripheral surface of its distal end. .
上記構成の摺動閉塞部材１２の先端大径部１５
は、第２図に示すように、ガス流通孔９の拡径部
１０内に位置しており、その摺動筒部１４は上記
管体５中央部のガス流通孔９内に摺動可能に位置
している。 Large diameter portion 15 at the tip of the sliding closure member 12 configured as described above
As shown in FIG. 2, is located within the enlarged diameter portion 10 of the gas flow hole 9, and its sliding tube portion 14 is slidable into the gas flow hole 9 in the center of the tube body 5. positioned.
上記構成の係止筒体１３は、上記連結管６の側
部に設けられている係止部材１８によつて係止さ
れている。この係止部材１８はその先端が尖頭状
に形成された円柱状部材であり、その外周部に嵌
着されている０−リングを介して上記連結管６の
側部に穿設されている取付孔１９内に摺動自在に
嵌着されている。この係止部材１８の尖頭部分は
上記係止筒体１３のフランジ１３ａに当接してお
り、その基端部は第１図および第２図に示すよう
に連結管６外方へ突出している。 The locking cylinder 13 configured as described above is locked by a locking member 18 provided on the side of the connecting pipe 6. This locking member 18 is a cylindrical member with a pointed tip, and is bored into the side of the connecting pipe 6 via an O-ring fitted to the outer circumference of the locking member 18. It is slidably fitted into the mounting hole 19. The pointed portion of this locking member 18 is in contact with the flange 13a of the locking cylinder 13, and its base end protrudes outward from the connecting pipe 6 as shown in FIGS. 1 and 2. .
また、上記摺動閉塞部材１２一係止筒体１３間
にはスプリング（付勢部材）２０が介装されてお
り、摺動閉塞部材１２を管体５の先端部に向けて
付勢している。従つて、上記摺動閉塞部材１２は
上記スプリング２０の有する弾性力以上の外力を
受けなければ、係止筒体１３側へ移動しないよう
になつている。 Further, a spring (biasing member) 20 is interposed between the sliding closing member 12 and the locking cylinder 13, and urges the sliding closing member 12 toward the tip of the tubular body 5. There is. Therefore, the sliding closing member 12 does not move toward the locking cylinder 13 unless it receives an external force greater than the elastic force of the spring 20.
しかして、上記構造のガス放出防止器１を実際
に取りつけるには、第４図に示すように、その先
端（連結密着部４側）をガス容器２１のバルブ出
口２１ａに連結し、その基端に例えば高圧ホース
２２を連結する。この高圧ホース２２には圧力調
整器２３が連結され、この圧力調整器２３にはガ
スメータ２４が連結され、このアスメータ２４か
ら各ガス機器に接続されることになる。なお、こ
の時、連結用螺結管８の雄螺子部８ａは、完全に
ガス容器２１のバルブ出口２１ａ内に収納されて
いる。従つて、上記摺動閉塞部材１２もバルブ出
口２１ａ内に位置している。上記のようにガス放
出防止器１を連結後、ガス容器２１からガスを各
ガス機器にまで送るには、まず係止部材１８の基
端部を連結管６内に押し込み、この状態のままで
ガス容器２１のバルブを開ける。そして、各管路
内にガスが行きわたつたら、係止部材１８の押圧
を解除し、元の位置に復帰するにまかせる。この
動作によつて、始め係止筒体１３は、第２図にお
いて摺動閉塞部材１２方向に変位され、この摺動
閉塞部材１２の基端部を係止する。この状態でガ
ス容器２１から高圧のガス（スプリング２１の弾
性力より大きい圧力）がガス流通孔９の中に流れ
込むが、上記のように摺動閉塞部材１２が係止筒
体１３、ひいては係止部材１８によつて係止され
ているので、ガス流通孔９は閉塞されることはな
い。そのため高圧ガスはガス流通孔９および高圧
ホース２２中に充満し、ガス流通孔９内の圧力が
均一になる。その結果、係止部材１８の押圧を解
除し、それによつてスプリング２１の付勢力とガ
ス流通孔９中のガス圧とによつて係止部材１８お
よび係止筒体１３が元の位置に復帰しても、ガス
流通孔９内の圧力は、摺動閉塞部材１２の大径部
１５の前後でも同一なので、摺動閉塞部材１２は
変位せず、ガスの流通は阻害されないため、ガス
供給可能状態にすることができる。 Therefore, in order to actually install the gas release preventer 1 having the above structure, as shown in FIG. For example, a high pressure hose 22 is connected to the high pressure hose 22. A pressure regulator 23 is connected to the high pressure hose 22, a gas meter 24 is connected to the pressure regulator 23, and the gas meter 24 is connected to each gas appliance. At this time, the male screw portion 8a of the connecting screw tube 8 is completely housed within the valve outlet 21a of the gas container 21. Therefore, the sliding closure member 12 is also located within the valve outlet 21a. After connecting the gas release preventer 1 as described above, in order to send gas from the gas container 21 to each gas appliance, first push the base end of the locking member 18 into the connecting pipe 6 and leave it in this state. Open the valve of the gas container 21. Once the gas has spread through each pipe, the pressure on the locking member 18 is released and the locking member 18 is allowed to return to its original position. By this operation, the first locking cylinder 13 is displaced in the direction of the sliding closing member 12 in FIG. 2, and locks the proximal end of the sliding closing member 12. In this state, high-pressure gas (pressure greater than the elastic force of the spring 21) flows from the gas container 21 into the gas flow hole 9, but as described above, the sliding closing member 12 locks the locking cylinder 13 and Since it is locked by the member 18, the gas flow hole 9 will not be blocked. Therefore, the high pressure gas fills the gas flow hole 9 and the high pressure hose 22, and the pressure within the gas flow hole 9 becomes uniform. As a result, the pressing force on the locking member 18 is released, whereby the locking member 18 and the locking cylinder 13 are returned to their original positions by the biasing force of the spring 21 and the gas pressure in the gas flow hole 9. However, the pressure inside the gas distribution hole 9 is the same before and after the large diameter portion 15 of the sliding closing member 12, so the sliding closing member 12 is not displaced and the gas flow is not obstructed, so that gas can be supplied. can be in a state.
一方、第４図において、大規模地震等によるガ
ス容器２１の転倒や落石、落雪等によつて、高圧
ホース２２の破損、圧力調整器２３の接続部の破
損、ガスメータ２４前の金属配管の接続部破損等
が発生し、ガスが急激に外気に放出される場合
は、摺動閉塞部材１２を境にしたガス流出側のガ
ス流通孔９内のガス圧が急激に低下することにな
るので、ガス容器２１からの高圧ガスによつて摺
動閉塞部材１２はスプリング２０の付勢力に抗し
てガス流出側に移動させられる。その結果、摺動
閉塞部材１２の先端大径部１５の０−リング１７
がガス流通孔９内の流出側段部１１ｂに係止密着
し、ガス流通孔９が遮断して高圧ガスの放出を阻
止することができる。 On the other hand, in FIG. 4, damage to the high-pressure hose 22, damage to the connection part of the pressure regulator 23, and connection to the metal pipe in front of the gas meter 24 are caused by the overturning of the gas container 21, falling rocks, falling snow, etc. caused by a large-scale earthquake, etc. If damage occurs and gas is suddenly released to the outside air, the gas pressure in the gas flow hole 9 on the gas outlet side with the sliding closure member 12 as a boundary will drop rapidly. The sliding closing member 12 is moved toward the gas outflow side by the high pressure gas from the gas container 21 against the urging force of the spring 20. As a result, the O-ring 17 of the large-diameter tip portion 15 of the sliding closure member 12
is in close contact with the outflow side step portion 11b in the gas distribution hole 9, thereby blocking the gas distribution hole 9 and preventing the release of high-pressure gas.
また、落石、落雪などのなんらかの原因によ
り、このガス放出防止器に大きな外力が加わり、
管体５と連結管６との連結部が折損し、ガスが急
激に放出する事態が生じても、前記したように、
管体５およびこの管体５内の摺動閉塞部材１２
は、ガス容器２１のバルブ出口２１ａ内に収納さ
れ、折損後もバルブ出口２１ａ内に残ることにな
るので、摺動閉塞部材１２は外気側へ移動し、そ
の先端大径部１５の０−リング１７がガス流通孔
９の流出側段部１１ｂに係止密着してガスの放出
を阻止することができる。 Also, due to some cause such as falling rocks or falling snow, a large external force is applied to this gas release preventer.
Even if the connection between the pipe body 5 and the connecting pipe 6 breaks and gas is suddenly released, as described above,
Tube 5 and sliding closure member 12 within this tube 5
is stored in the valve outlet 21a of the gas container 21, and will remain in the valve outlet 21a even after breakage, so the sliding closing member 12 moves to the outside air side and the O-ring of the large diameter portion 15 at its tip 17 can be locked and tightly attached to the outflow side step portion 11b of the gas flow hole 9 to prevent gas from being released.
「考案が解決しようとする課題」
ところで、上記従来のガス放出防止器には下記
のような欠点があり、その解決が必要とされてい
る。"Problems to be Solved by the Invention" By the way, the above-mentioned conventional gas release preventer has the following drawbacks, which need to be solved.
すなわち、ガス容器２１からのガス供給は、布
設ガス管によるガス供給、つまり都市ガスと違つ
て、その供給ガス圧が周囲の温度変化、容器内残
量によつて常に変化し、一定でない。例えば、
LPガスが充分入つている容器においては、気温
が−１℃の時のガス圧が１Kg／cm2であるのに対
し、気温30〜50℃の時のガス圧は15Kg／cm2にも達
してしまう。そのため、供給ガス圧が低く、供給
ガス量が少なくなつている場合でもガス使用が始
まると、ガス流通孔９のガス流出側は、圧力が極
端に低くなり、ガス流入側とガス流出側との圧力
差が大きくなり、摺動閉塞部材１２が移動し、ガ
ス流通孔９が遮断されてしまい、ガス使用ができ
なくなつてしまう。また、逆に気温上昇等により
供給設備の損傷が少なく、それによつて生じるガ
ス放出量が少ない時はガス流入側とガス流出側と
の圧力差がなかなか大きくならない。そのため、
実際にはガス供給設備が損傷を受け、ガス放出が
起こつているにもかかわらず、摺動閉塞部材１２
が移動せず、ガスが放出されつぱなしになり、ガ
ス放出による災害をひき起こす危険がある。 That is, the gas supply from the gas container 21 is different from gas supply through a laid gas pipe, that is, city gas, and the pressure of the gas supplied constantly changes depending on ambient temperature changes and the amount remaining in the container, and is not constant. for example,
In a container with sufficient LP gas, the gas pressure is 1Kg/cm 2 when the temperature is -1℃, but the gas pressure reaches 15Kg/cm 2 when the temperature is 30 to 50℃. It ends up. Therefore, even when the supply gas pressure is low and the supply gas amount is small, when gas use starts, the pressure on the gas outlet side of the gas distribution hole 9 becomes extremely low, and the pressure between the gas inflow side and the gas outlet side becomes extremely low. The pressure difference increases, the sliding closing member 12 moves, and the gas flow hole 9 is blocked, making it impossible to use gas. On the other hand, when there is little damage to the supply equipment due to a rise in temperature and the resulting amount of gas discharge is small, the pressure difference between the gas inflow side and the gas outflow side does not increase easily. Therefore,
Despite the fact that the gas supply equipment has been damaged and gas is being released, the sliding closure member 12
If the gas does not move, the gas will continue to be released, and there is a danger that it will cause a disaster due to gas release.
また、ガス容器２１のバルブを開く時に、摺動
閉塞部材１２が移動しないように、連結管６内に
押し込む係止部材１８には、その取付孔１９の内
壁との間に摩擦が生じるため、ガス流通孔９内の
ガス圧が低い場合には、係止部材１８の押圧を解
除しても元の位置に復帰しなくなつてしまう。 Further, when opening the valve of the gas container 21, friction occurs between the locking member 18 that is pushed into the connecting pipe 6 and the inner wall of the mounting hole 19 so that the sliding closing member 12 does not move. If the gas pressure in the gas flow hole 9 is low, even if the pressure on the locking member 18 is released, the locking member 18 will not return to its original position.
本考案者らは、上記のような危険で不便な状況
を改善することを目的に、鋭意実験検討したとこ
ろ、下記のような知見を得るに至つた。 The inventors of the present invention conducted intensive experimental studies with the aim of improving the dangerous and inconvenient situation described above, and came to the following knowledge.
すなわち、上記したように、ガス源がガス容器
２１中のガスである以上、供給ガス圧の変動は避
けることができず、また、スプリング２０の付勢
力は一定であるので、第５図のグラフに示すa1点
のように供給ガス圧が低い時は、放出ガス流量が
少なくても、ガス流通孔９が遮断されてしまい、
供給ガス圧が高い時は、図中a2点のように、放出
ガス流量が相当大きくならないとガス流通孔９が
遮断されない。つまり、上記ガス放出防止器１で
は、図に示すＡ線にほぼ相応してガス遮断動作が
起きることになる。ところが実際にガス供給設備
に損傷が生じ、ガス放出が起こつた場合は、ガス
容器２１からの供給圧の高低にそれ程左右され
ず、比較的狭い数値範囲内の量のガスが放出され
ることになる。そのため、より安全なガス放出防
止器としては、供給ガス圧の高低にかかわらず、
第５図中のＢ線のように所定範囲内の放出ガス流
量に対して作動することが必要となる。そのため
には、供給ガス圧が低い時にスプリング２０の付
勢力が強まり、供給ガス圧が高い時は、スプリン
グの付勢力が弱まるように工夫する必要がある。
つまり、ガス流通孔９内のガス圧に反比例して、
スプリング２０の付勢力を強める部材を取りつけ
ることが必要となる。 That is, as mentioned above, since the gas source is the gas in the gas container 21, fluctuations in the supplied gas pressure cannot be avoided, and since the biasing force of the spring 20 is constant, the graph in FIG. When the supply gas pressure is low as shown in point a1 , the gas flow hole 9 will be blocked even if the discharged gas flow rate is small.
When the supply gas pressure is high, the gas flow holes 9 are not shut off unless the discharged gas flow rate becomes considerably large, as shown at point a2 in the figure. In other words, in the gas release preventer 1, the gas cutoff operation occurs approximately corresponding to line A shown in the figure. However, if damage actually occurs to the gas supply equipment and gas is released, the amount of gas released will be within a relatively narrow numerical range, not depending on the level of the supply pressure from the gas container 21. Become. Therefore, as a safer gas release preventer, regardless of the high or low supply gas pressure,
It is necessary to operate for a discharged gas flow rate within a predetermined range as shown by line B in FIG. To this end, it is necessary to devise a method in which the biasing force of the spring 20 is strong when the supply gas pressure is low, and the biasing force of the spring 20 is weak when the supply gas pressure is high.
In other words, in inverse proportion to the gas pressure inside the gas flow hole 9,
It is necessary to attach a member to strengthen the urging force of the spring 20.
また、ガス流通孔９内のガス圧が低い場合で
も、押圧した係止部材１８が元の位置に復帰する
ようにするためには、取付孔１９内に係止部材１
８を外方へ付勢する付勢部材を介装することが考
えられる。 In addition, in order for the pressed locking member 18 to return to its original position even when the gas pressure inside the gas flow hole 9 is low, it is necessary to insert the locking member 18 into the mounting hole 19.
It is conceivable to interpose a biasing member that biases 8 outward.
「課題を解決するための手段」
この考案は上記知見に基づいてなされたもので
ある。すなわち、この考案のガス放出防止器は、
付勢部材の基端側にこの付勢部材を係止するとと
もに係止筒対内に摺接する摺動係止部材を設け、
この摺動係止部材をガス流通孔内のガス圧に反比
例して摺動閉塞部材側へ変位させる調圧手段を連
結管側部に取りつけたことを特徴とするものであ
る。"Means for solving the problem" This idea was made based on the above knowledge. In other words, the gas release preventer of this invention is
A sliding locking member is provided on the proximal end side of the biasing member to lock the biasing member and slide into the pair of locking cylinders,
The present invention is characterized in that pressure regulating means for displacing the sliding locking member toward the sliding closing member in inverse proportion to the gas pressure within the gas flow hole is attached to the side of the connecting pipe.
「実施例」
以下、この考案を図面を参照して説明する。第
６図はこの考案の一実施例を示すもので、図中第
１図および第２図と共通する部分には同一符号を
付して説明を簡略化する。"Example" This invention will be described below with reference to the drawings. FIG. 6 shows an embodiment of this invention, in which parts common to FIGS. 1 and 2 are given the same reference numerals to simplify the explanation.
図中、符号３０は係止筒体を示すもので、この
係止筒体３０は摺動変位し、前記摺動閉塞部材１
２を係止するためのもので、前記係止筒体１３に
おいて、その係止縮径部１３ｂを省略した形状に
形成されている。この係止筒体３０はそのフラン
ジ３０ａを係止部材３１の先端の尖頭部によつて
係止されている。 In the figure, reference numeral 30 indicates a locking cylinder, and this locking cylinder 30 slides and displaces the sliding closing member 1.
2, and is formed in the shape of the locking cylinder 13 with the locking reduced diameter portion 13b omitted. The flange 30a of the locking cylinder 30 is locked by a pointed portion at the tip of a locking member 31.
上記係止部材３１は、その先端が尖頭状に形成
された円柱状部材で、その外周部に嵌着されてい
る０−リングを介して上記連結管６の側部に穿設
されている摺動孔３１ａ内に該連結管６の内側か
ら挿入されて摺動自在に嵌着されており、その先
端部に介装されているスプリング３２（第二の付
勢部材）によつて常に連結管６外方に向かつて付
勢されている。従つて、ガス流通孔９内のガス圧
が低い場合でも、この係止部材３１に外部から加
えた押圧を解除すれば、自動的に元の位置に復帰
する。 The locking member 31 is a cylindrical member with a pointed tip, and is bored into the side of the connecting pipe 6 via an O-ring fitted to the outer circumference of the locking member 31. It is inserted from the inside of the connecting pipe 6 into the sliding hole 31a and is slidably fitted, and is always connected by a spring 32 (second biasing member) interposed at its tip. The tube 6 is biased outward. Therefore, even if the gas pressure in the gas flow hole 9 is low, if the pressure applied to the locking member 31 from the outside is released, the locking member 31 will automatically return to its original position.
また、上記係止筒体３０の内側には、円筒状の
摺動係止部材３３が摺動自在に介装されている。
この摺動係止部材３３は、その先端においてスプ
リング２０（第一の付勢部材）を係止しており、
その基端において調圧部材３４によつて係止され
ている。 Further, a cylindrical sliding locking member 33 is slidably inserted inside the locking cylinder 30.
This sliding locking member 33 locks the spring 20 (first biasing member) at its tip,
It is locked at its base end by a pressure regulating member 34.
この調圧部材３４は、その中央部３４ａに比べ
その先端部３４ｂは大幅に縮径されており、これ
ら中央部３４ａと先端部３４ｂとの間（以下、先
端テーパ部と称す）３４ｃはテーパ状に形成され
ている。上記中央部３４ａには０−リング３５が
外嵌されており、この０−リング３５を介して上
記調圧部材３４は、前記連結管６側壁に穿設した
摺動孔３６内に摺動できるようになつている。ま
た、上記調圧部材３４は、この調圧部材３４は、
上記調圧部材３４は、この調圧部材３４と、上記
摺動孔３６の外方開口部に取りつけた盲蓋３７と
の間に介装されているスプリング３８によつて常
にガス流通孔９内に向かつて付勢されている。従
つて、ガス流通孔９内のガス圧が極端に低くなつ
ている時は、図に示すように、上記調圧部材３４
はその先端部３４ｂをガス流通孔９内の対向する
壁部に当接する位置に移動することになる。ま
た、上記摺動孔３６内の側部には上記連結管６内
の基端開口部６ａに開口する連通孔３９が穿設さ
れており、上記調圧部材３４の摺動がスムースに
行なわれるようになつている。なお、第６図、第
７図の図示例にあつては、連通孔３９に直接にガ
スが流入するかに見えるが、基端開口部６ａには
高圧ホース２２が接続され、この高圧ホース２２
と連結管６とがテーパ面６ｃあるいは突き当たり
面６ｄで気密的に接続されるために、この連通孔
３９にはガスは流入しない。この連通孔３９は、
螺子の部分で大気に連通するようになつている。 This pressure regulating member 34 has a tip portion 34b that is significantly reduced in diameter compared to a center portion 34a, and a space 34c between the center portion 34a and the tip portion 34b (hereinafter referred to as a tip tapered portion) is tapered. is formed. An O-ring 35 is fitted onto the central portion 34a, and the pressure regulating member 34 can slide into a sliding hole 36 formed in the side wall of the connecting pipe 6 via the O-ring 35. It's becoming like that. Further, the pressure regulating member 34 is as follows:
The pressure regulating member 34 is always kept in the gas distribution hole 9 by a spring 38 interposed between the pressure regulating member 34 and a blind cover 37 attached to the outer opening of the sliding hole 36. is being energized towards. Therefore, when the gas pressure in the gas flow hole 9 is extremely low, the pressure regulating member 34 is removed as shown in the figure.
moves its tip 34b to a position where it abuts the opposing wall in the gas flow hole 9. Further, a communication hole 39 that opens to the proximal end opening 6a in the connecting pipe 6 is bored in the side of the sliding hole 36, so that the pressure regulating member 34 can slide smoothly. It's becoming like that. In addition, in the illustrated example of FIG. 6 and FIG. 7, although it appears that gas flows directly into the communication hole 39, a high pressure hose 22 is connected to the base end opening 6a, and this high pressure hose 22
Since the connecting pipe 6 and the connecting pipe 6 are airtightly connected at the tapered surface 6c or the abutting surface 6d, no gas flows into the communication hole 39. This communication hole 39 is
The screw part connects to the atmosphere.
なお、上記構成においては、調圧部材３４、０
−リング３５、盲蓋３７、スプリング３８は調圧
手段４０を構成している。 Note that in the above configuration, the pressure regulating member 34, 0
- The ring 35, the blind lid 37, and the spring 38 constitute a pressure regulating means 40.
次に上記構造のガス放出防止器の使用方法およ
びその作用を説明する。このガス放出防止器をガ
ス容器およびガス供給設備に連結し、ガス供給を
始めるには、まず前記したように、係止部材３１
を連結管６内に押し込んだ状態で、ガス容器のバ
ルブを開きガスを流し、ガスが各管路に充満した
ら、係止部材３１の押圧を解く。この時、係止部
材３１はスプリング３２によつて外方へ付勢され
ているので、ガス流通孔９内のガス圧が低くて
も、押圧前の位置に自動的に復帰し、支障を起こ
すことがない。 Next, a method of using the gas release preventer having the above structure and its function will be explained. In order to connect this gas release preventer to a gas container and gas supply equipment and start gas supply, first, as described above, the locking member 31 is
is pushed into the connecting pipe 6, open the valve of the gas container to let the gas flow, and when each pipe line is filled with gas, the pressure on the locking member 31 is released. At this time, the locking member 31 is urged outward by the spring 32, so even if the gas pressure in the gas flow hole 9 is low, it will automatically return to the position before being pressed, causing a problem. Never.
次にガス供給中において、何らかの原因により
ガス供給設備に損傷が生じ、ガス放出が生じた時
の作用を供給ガス圧が低い時と、高い時の両極端
を例にとつて説明する。 Next, the effects when the gas supply equipment is damaged for some reason and gas is released during gas supply will be explained using two extreme cases, one when the supplied gas pressure is low and the other extreme when the supplied gas pressure is high.
まず、供給ガス圧が低い時は、ガス流通孔９中
のガス圧が低いので、第６図に示すように、調圧
部材３４はスプリング３８によつてガス流通孔９
中に最も突出した状態となつている。そのため、
摺動係止部材３３は調圧部材３４の中央部３４ａ
によつて係止され、最も摺動閉塞部材１２寄りに
移動している。その結果、スプリング２０の付勢
力は増強されており、通常の使用量によつて形成
される流入側ガス圧と流出側ガス圧との差圧では
摺動閉塞部材１２は移動せず、ガス放出によつて
生じる差圧によつて初めて移動することになる。
このように調圧手段４０が設けられているため、
供給ガス圧が低くても、従来のように通常使用量
によつてガス流通孔９は遮断されることはなく、
ガス放出が生じて始めて摺動閉塞部材１２が移動
し、ガス流通孔９を遮断することになる。従つ
て、この考案のガス放出防止器によれば、供給ガ
ス圧力が低い場合、通常使用量でガス供給が阻止
され、不便な思いをすることがない。 First, when the supply gas pressure is low, the gas pressure in the gas distribution hole 9 is low, so as shown in FIG.
It is in the most prominent state. Therefore,
The sliding locking member 33 is located at the center portion 34a of the pressure regulating member 34.
, and is moved closest to the sliding closing member 12. As a result, the biasing force of the spring 20 is strengthened, and the sliding closing member 12 does not move under the differential pressure between the inflow side gas pressure and the outflow side gas pressure created by normal usage, and the gas is released. The first movement is due to the differential pressure created by the
Since the pressure regulating means 40 is provided in this way,
Even if the supply gas pressure is low, the gas flow holes 9 will not be blocked due to the normal usage amount as in the past.
Only after gas release occurs, the sliding closing member 12 moves and blocks the gas flow hole 9. Therefore, according to the gas release preventer of this invention, when the supply gas pressure is low, the gas supply is blocked at the normally used amount, and there is no inconvenience.
一方、供給ガス圧が高い時は、ガス流通孔９中
のガス圧が高くなつているので、第７図に示すよ
うに、このガス圧によつて調圧部材３４は摺動孔
３６内に最も引込んだ位置に移動している。その
ため、摺動係止部材３３は調圧部材３４の先端部
３４ｂによつて係止され、最も摺動閉塞部材１２
から離れている。その結果、スプリング２０の付
勢力は弱められており、小さい差圧によつて容易
に圧縮されることになる。従つて、高い供給ガス
圧で供給ガス量が多く、ガス放出が生じても差圧
がなかなか大きくならない場合でも、ガス放出が
起これば、それに伴つて生じる差圧上昇に対応し
て上記スプリング２０が圧縮され、摺動閉塞部材
１２が移動し、ガス流通孔９を遮断して安全を保
つことができる。このように、このガス放出防止
器は、調圧手段が設けられているため、供給ガス
圧が高く、ガス流出量が余程多くならなければ、
流入側のガス圧と流出側のガス圧との差圧が大き
くならない場合でも、従来と違つて比較的微小な
差圧増加に対しても鋭敏に反応して、ガス流通孔
９を遮断し、ガス放出を阻止することができ、安
全である。 On the other hand, when the supply gas pressure is high, the gas pressure in the gas distribution hole 9 is high, so this gas pressure causes the pressure regulating member 34 to move into the sliding hole 36. It has moved to the most retracted position. Therefore, the sliding locking member 33 is locked by the tip 34b of the pressure regulating member 34, and the sliding locking member 12
away from As a result, the biasing force of the spring 20 is weakened, and it is easily compressed by a small differential pressure. Therefore, even if the gas supply pressure is high and the amount of gas supplied is large and the differential pressure does not increase easily even if gas is released, if gas is released, the spring 20 will respond to the accompanying increase in the differential pressure. is compressed, the sliding closing member 12 moves, and the gas circulation hole 9 can be blocked to maintain safety. In this way, this gas release preventer is equipped with a pressure regulating means, so if the supply gas pressure is high and the gas outflow amount is not too large,
Even when the pressure difference between the gas pressure on the inflow side and the gas pressure on the outflow side does not increase, unlike the conventional method, it responds sharply to a relatively small increase in the pressure difference, and blocks the gas flow hole 9. It is safe and can prevent gas release.
なお、上記構成において、スプリング２０，３
８の長さおよび弾性力、そして調圧部材３４の先
端テーパ部３４ｃのテーパ部分の長さを種々に設
定することによつて、様々な供給ガス圧、放出ガ
ス量に対応して適正に遮断動作を起こすことが可
能となる。従つて、上記この考案の説明では、ガ
ス源がLPガス容器を念願において行なつたが、
上記のように、各スプリング２０，３８の長さお
よび弾性力、そして調圧部材３４の先端テーパ部
３４ｃのテーパ部分の長さを状況に応じて選択す
れば、アセチレン、窒素、酸素など他のガス容器
にも、さらには液体状のLPガスをそのまま供給
するLPガス容器にも適用することが可能である。 Note that in the above configuration, the springs 20, 3
By setting various lengths and elastic forces of 8 and the length of the tapered portion of the tapered end portion 34c of the pressure regulating member 34, appropriate shutoff can be achieved in response to various supply gas pressures and discharged gas amounts. It becomes possible to take action. Therefore, in the above explanation of this invention, the gas source was an LP gas container, but
As mentioned above, if the length and elastic force of each spring 20, 38 and the length of the tapered part of the tip tapered part 34c of the pressure regulating member 34 are selected depending on the situation, other materials such as acetylene, nitrogen, oxygen, etc. It can be applied to gas containers as well as LP gas containers that supply liquid LP gas as it is.
「考案の効果」
以上説明したように、この考案に係るガス放出
防止器は、第一の付勢部材の基端側にこの第一の
付勢部材を係止するとともに係止筒体内に摺接す
る摺動係止部材を設け、この摺動係止部材をガス
流通孔内のガス圧に反比例して摺動閉塞部材側へ
変位させる調圧手段を連結管側部に取りつけたも
のなので、供給ガス圧の高低にかかわらず、正常
に作動し、安全を確保し、かつ便利である。"Effect of the invention" As explained above, the gas release preventer according to the invention locks the first urging member on the proximal end side of the first urging member and slides inside the locking cylinder. A sliding locking member is provided in contact with the sliding locking member, and a pressure regulating means is attached to the side of the connecting pipe to displace the sliding locking member toward the sliding closing member in inverse proportion to the gas pressure in the gas flow hole. Regardless of whether the gas pressure is high or low, it operates normally, ensures safety, and is convenient.
その上、上記連結管の側部に穿設されている摺
動孔内には、該連結管の内側から係止部材が挿入
されて摺動自在に嵌着されており、この係止部材
の先端の尖頭部によつて前記係止筒体のフランジ
が係止されていると共に、該係止部材が、その先
端部に介装されている第二の付勢部材によつて常
に連結管外方へ向けて付勢されている。このた
め、前記ガス流通孔内のガス圧が低い場合でも、
前記係止部材に外部から加えた押圧を解除するこ
とによつて、該係止部材を自動的に元の位置に復
帰させることができる。 Moreover, a locking member is inserted from inside the connecting pipe and slidably fitted into the sliding hole bored in the side of the connecting pipe. The flange of the locking cylinder is locked by the pointed head at the tip, and the locking member is always held against the connecting pipe by a second biasing member interposed at the tip. Forced outward. Therefore, even when the gas pressure inside the gas flow hole is low,
By releasing the pressure applied to the locking member from the outside, the locking member can be automatically returned to its original position.
第１図ないし第３図は従来のガス放出防止器の
位置例を説明するためのもので、第１図は側面
図、第２図は側断面図、第３図は摺動閉塞部材お
よび係止筒体の斜視図、第５図はガス放出防止器
が作動する時の放出ガス流量と供給ガス圧との関
係を示すグラフ、第４図はガス放出器の取付状態
を示す構成図、第６図および第７図はそれぞれこ
の考案に係るガス放出防止器の一実施例を示す側
断面図である。
２……本体、５……管体、６……連結管、９…
…ガス流通孔、１０……拡径部、１１ａ……流入
側段部、１１ｂ……流出側段部、１２……摺動閉
塞部材、１４……摺動筒部、１５……先端大径
部、１６……ガス流通路、２０……スプリング
（第一の付勢部材）、２１……ガス容器、２１ａ…
…バルブ出口、２２……高圧ホース、２３……圧
力調整器、３０……係止筒体、３１……係止部
材、３１ａ……摺動孔、３２……スプリング（第
二の付勢部材）、３３……摺動係止部材、４０…
…調圧手段。
1 to 3 are for explaining an example of the position of a conventional gas release preventer. A perspective view of the stop barrel body, FIG. 5 is a graph showing the relationship between the released gas flow rate and supply gas pressure when the gas release preventer is activated, and FIG. 4 is a configuration diagram showing the installation state of the gas release device. 6 and 7 are side sectional views showing one embodiment of the gas release preventer according to this invention, respectively. 2...Main body, 5...Pipe body, 6...Connecting pipe, 9...
...Gas distribution hole, 10...Enlarged diameter part, 11a...Inflow side stepped part, 11b...Outflow side stepped part, 12...Sliding closing member, 14...Sliding cylinder part, 15...Tip large diameter Part, 16...Gas flow passage, 20...Spring (first biasing member), 21...Gas container, 21a...
... Valve outlet, 22 ... High pressure hose, 23 ... Pressure regulator, 30 ... Locking cylinder, 31 ... Locking member, 31a ... Sliding hole, 32 ... Spring (second biasing member) ), 33... sliding locking member, 40...
...Pressure adjustment means.
Claims (1)
先端部を構成する管体５と、ガス供給設備に連結
されて基端部を構成する連結管６とから管状の本
体２が構成されていると共に、 前記管体５内を軸方向へ貫通するガス流通孔９
の略中央部に、拡径部１０およびその前後の流入
側段部１１ａと流出側段部１１ｂとが形成され、 該ガス流通孔９内に、そのガス流通孔９内の基
端側に摺動自在に挿入された摺動筒部１４および
前記拡径部１０内に位置する先端大径部１５を有
しかつ前記先端大径部１５近傍の側面から基端面
にかけてガス流通路１６が形成されている摺動閉
塞部材１２が設けられ、 同ガス流通孔９内に、前記摺動閉塞部材１２を
前記ガス容器２１側へ所定の弾性力を持つて付勢
する第一の付勢部材２０が設けられてなるガス放
出防止器において、 前記ガス流通孔９内の基端側に係止筒体３０が
摺動自在に介装され、該係止筒体３０の内側に筒
状の摺動係止部材３３が摺動自在に介装され、こ
の摺動係止部材３３の先端部が前記第一の付勢部
材２０の基端を係止していると共に、該摺動係止
部材３３を前記ガス流通孔９内のガス圧に反比例
して前記摺動閉塞部材１２側へ変位させる調圧手
段４０が前記本体２の基端部に取り付けられてお
り、 さらに前記連結管６の側部に穿設されている摺
動孔３１ａ内に、該連結管６の内側から係止部材
３１が挿入されて摺動自在に嵌着され、この係止
部材３１の先端の尖頭部が、前記係止筒体３０の
基端部に形成されたフランジ３０ａを係止してい
ると共に、その係止部材３１の先端部に、該係止
部材３１を常に前記連結管６外方へ向けて付勢す
る第二の付勢部材３２が介装されていることを特
徴とするガス放出防止器。[Claims for Utility Model Registration] A tubular main body consisting of a pipe body 5 connected to the valve outlet 21a of the gas container 21 and forming the tip part, and a connecting pipe 6 connected to the gas supply equipment and forming the base end part. 2, and a gas flow hole 9 passing through the pipe body 5 in the axial direction.
An enlarged diameter portion 10 and an inflow side step portion 11a and an outflow side step portion 11b are formed in the substantially central portion of the gas flow hole 9. It has a sliding cylinder part 14 that is movably inserted and a tip large diameter part 15 located within the enlarged diameter part 10, and a gas flow passage 16 is formed from the side surface near the tip large diameter part 15 to the proximal end surface. A first biasing member 20 is provided in the gas flow hole 9 for biasing the sliding closure member 12 toward the gas container 21 with a predetermined elastic force. In the gas release preventer provided, a locking cylinder 30 is slidably interposed on the base end side of the gas flow hole 9, and a cylindrical sliding lock is provided inside the locking cylinder 30. A locking member 33 is slidably interposed, and the distal end of the sliding locking member 33 locks the base end of the first biasing member 20, and the sliding locking member 33 is A pressure regulating means 40 for displacing the gas toward the sliding closing member 12 in inverse proportion to the gas pressure in the gas flow hole 9 is attached to the base end of the main body 2, and is further attached to the side of the connecting pipe 6. A locking member 31 is inserted into the bored sliding hole 31a from the inside of the connecting pipe 6 and is slidably fitted, and the sharp end of the locking member 31 is connected to the locking member 31a. A flange 30a formed at the proximal end of the locking cylinder 30 is locked, and the locking member 31 is always urged toward the outside of the connecting pipe 6 at the distal end of the locking member 31. A gas release preventer characterized in that a second biasing member 32 is interposed therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2254883U JPS59129000U (en) | 1983-02-18 | 1983-02-18 | gas release preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2254883U JPS59129000U (en) | 1983-02-18 | 1983-02-18 | gas release preventer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59129000U JPS59129000U (en) | 1984-08-30 |
| JPH0212399Y2 true JPH0212399Y2 (en) | 1990-04-06 |
Family
ID=30153644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2254883U Granted JPS59129000U (en) | 1983-02-18 | 1983-02-18 | gas release preventer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59129000U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010113600A (en) * | 2001-11-28 | 2001-12-28 | 구성배 | Explosion Proof Facilities for Fluid Storage Tanks Using Multi-Purpose Heads |
| KR101532742B1 (en) * | 2014-07-01 | 2015-07-09 | (주)지라프 | Gas pressure reducing valve |
-
1983
- 1983-02-18 JP JP2254883U patent/JPS59129000U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59129000U (en) | 1984-08-30 |
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