JPS6233474B2 - - Google Patents

Info

Publication number
JPS6233474B2
JPS6233474B2 JP21669282A JP21669282A JPS6233474B2 JP S6233474 B2 JPS6233474 B2 JP S6233474B2 JP 21669282 A JP21669282 A JP 21669282A JP 21669282 A JP21669282 A JP 21669282A JP S6233474 B2 JPS6233474 B2 JP S6233474B2
Authority
JP
Japan
Prior art keywords
valve
liquefied gas
guide
float
tank
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 - Lifetime
Application number
JP21669282A
Other languages
Japanese (ja)
Other versions
JPS59106782A (en
Inventor
Tadashi Inoe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MYAIRI SHOJI KK
Original Assignee
MYAIRI SHOJI KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MYAIRI SHOJI KK filed Critical MYAIRI SHOJI KK
Priority to JP21669282A priority Critical patent/JPS59106782A/en
Publication of JPS59106782A publication Critical patent/JPS59106782A/en
Publication of JPS6233474B2 publication Critical patent/JPS6233474B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • 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
    • 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
    • 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
    • F17C2205/0382—Constructional details of valves, regulators
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Float Valves (AREA)

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は、LPガス等の液化ガスを外部の供
給源からタンク内へ充填する際、液化ガスの過充
填を防止するための弁に関し、特にその弁の誤動
作を防止するための装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a valve for preventing overfilling of liquefied gas when filling a tank with liquefied gas such as LP gas from an external supply source. In particular, the present invention relates to a device for preventing malfunction of the valve.

［従来の技術］および［発明が解決しようとする
問題点］ 液化ガス充填後の温度上昇等に起因するタンク
の破裂事故を生じさせないために、液化ガスの過
充填を防止しなければならない。そこで、液化ガ
スの供給流路内に弁を設け、液化ガスの充填量が
所定量に達したときこの弁を閉じ、液化ガスの供
給を停止させる機構が使用されている。[Prior Art] and [Problems to be Solved by the Invention] Overfilling with liquefied gas must be prevented in order to prevent a tank from bursting due to a rise in temperature after filling with liquefied gas. Therefore, a mechanism is used in which a valve is provided in the liquefied gas supply channel, and when the amount of liquefied gas filled reaches a predetermined amount, the valve is closed to stop the supply of liquefied gas.

そのような過充填防止用弁の機構は、たとえ
ば、以下のようになつている。まず、タンク内に
フロートと、このフロートに取付けられフロート
ともとに上動する弁とが配置される。充填される
液化ガスが一定の液面となつたとき、弁は弁体の
弁座を閉塞し、液化ガスの供給を停止させる。 The mechanism of such an overfill prevention valve is, for example, as follows. First, a float and a valve that is attached to the float and moves upward together with the float are arranged in a tank. When the liquefied gas to be filled reaches a certain level, the valve closes the valve seat of the valve body and stops the supply of liquefied gas.

しかし、上述したような機構の過充填防止用弁
は以下のような問題点を含む。すなわち、外部の
供給源から供給される液化ガスの流体圧が弁の下
面に作用している。この流体圧のために、充填さ
れる液化ガスが所定の液面に達していないときで
も弁が上動し弁座を塞いでしまうという誤動作が
発生する。 However, the overfill prevention valve having the mechanism described above has the following problems. That is, the fluid pressure of liquefied gas supplied from an external source acts on the lower surface of the valve. This fluid pressure causes a malfunction in which the valve moves upward and blocks the valve seat even when the liquefied gas to be filled has not reached a predetermined liquid level.

そこで、この発明の目的は、上述したような誤
動作を防止し、液化ガスが所定量充填されたとき
液化ガスの供給を停止して過充填を確実に防止し
得る液化ガス過充填防止用弁の誤動作防止装置を
提供することである。 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a liquefied gas overfill prevention valve that can prevent the above-mentioned malfunctions and reliably prevent overfilling by stopping the supply of liquefied gas when a predetermined amount of liquefied gas is filled. An object of the present invention is to provide a malfunction prevention device.

［問題点を解決するための手段］ この発明に従つた液化ガス過充填防止用弁の誤
動作防止装置は、タンク内に充填される液化ガス
によつて浮上するフロートと、このフロートに取
付けられフロートと一体に上動する弁と、タンク
内に供給される液化ガスの流路となる内部領域を
有する中空筒状の弁体と、を備えている。上記弁
は、弁体の内部領域内に位置する。また、弁体の
上部には、上記弁が所定位置まで上動したとき該
弁と当接して液化ガスの供給流路を閉じる弁座が
設けられている。さらに、弁体の内部領域内に
は、弁ガイドが配置されている。この弁ガイド
は、上記弁の下面と対面する対向壁部と、上記弁
が相対的に下方の位置から上記弁座に当接する直
前の位置に至るまで上記弁の外周部に密着して該
弁の下面への液化ガスの流入を阻止する障壁部と
を有している。また、弁または弁ガイドには、弁
の下面と弁ガイドの対向壁部との間の形成される
領域が真空状態となることを阻止し、しかも供給
される液化ガスの流体圧の影響を受けない微小断
面の通気孔が設けられている。[Means for Solving the Problems] A malfunction prevention device for a liquefied gas overfill prevention valve according to the present invention includes a float that floats up due to the liquefied gas filled in a tank, and a float that is attached to the float. and a hollow cylindrical valve body having an internal region that serves as a flow path for liquefied gas supplied into the tank. The valve is located within the internal region of the valve body. Further, a valve seat is provided on the upper part of the valve body, and comes into contact with the valve when the valve moves up to a predetermined position to close the liquefied gas supply flow path. Furthermore, a valve guide is arranged in the internal region of the valve body. The valve guide includes an opposing wall portion facing the lower surface of the valve, and an outer circumferential portion of the valve from a relatively lower position to a position immediately before contacting the valve seat. It has a barrier portion that prevents liquefied gas from flowing into the lower surface of the container. The valve or valve guide also has a structure that prevents the area formed between the lower surface of the valve and the opposing wall of the valve guide from becoming a vacuum state, and that is not affected by the fluid pressure of the supplied liquefied gas. There are no micro cross-section ventilation holes.

［作用］ 弁が相対的に下方の位置から弁座に当接する直
前の位置に至るまでの間は、対向壁部と障壁部と
を有する弁ガイドによつて、弁の下面に対抗して
供給液化ガスの流体圧が作用するのを禁じられて
いる。したがつて、タンク内に充填される液化ガ
スが所定の液面に達するまで、弁はフロートの浮
力のみによつて上動し、充填される液化ガスが所
定の液面に達したとき弁は弁座に当接して液化ガ
スの供給通路を閉じる。こうして、弁の誤動作は
防止され、液化ガスの過充填が確実に防止され
る。また、弁または弁ガイドには微小断面の通気
孔が設けられているので、弁の上動は円滑になさ
れ得る。[Operation] From the relatively lower position of the valve to the position just before it abuts the valve seat, a valve guide having an opposing wall part and a barrier part supplies water against the lower surface of the valve. The fluid pressure of liquefied gas is prohibited from acting. Therefore, until the liquefied gas filled in the tank reaches a predetermined liquid level, the valve moves upward only by the buoyancy of the float, and when the liquefied gas filled in the tank reaches the predetermined liquid level, the valve moves upward. It contacts the valve seat and closes the liquefied gas supply passage. In this way, malfunction of the valve is prevented and overfilling with liquefied gas is reliably prevented. Further, since the valve or the valve guide is provided with a ventilation hole having a minute cross section, the upward movement of the valve can be performed smoothly.

［実施例］ 第１図を参照して、３は液化ガスが充填される
タンクである。外部の供給源から供給される液化
ガスは供給管１、取入管２および中空筒状の弁体
６を通過してタンク３内に充填される。弁体６の
上部には、タンク３内に充填される液化ガスによ
つて浮上するフロート１２が配置されている。そ
して、タンク３内に填される液化ガスが所定の液
面に達したとき、弁体６内において液化ガスの供
給流路が閉じられ、それによつて液化ガスの供給
が停止される。[Example] Referring to FIG. 1, 3 is a tank filled with liquefied gas. Liquefied gas supplied from an external supply source passes through the supply pipe 1, the intake pipe 2, and the hollow cylindrical valve body 6, and is filled into the tank 3. A float 12 that floats up due to the liquefied gas filled in the tank 3 is arranged above the valve body 6 . When the liquefied gas filled in the tank 3 reaches a predetermined liquid level, the liquefied gas supply channel is closed within the valve body 6, thereby stopping the liquefied gas supply.

第２図および第３図を参照して、弁体６および
フロート１２に関連した構造を具体的に説明す
る。取入管２の上端部には接手筒４が固定して取
付けられている。中空筒状の弁体６は、この接手
筒４にねじなどを介して取付けられている。弁体
６は、タンク３内の供給される液化ガスの流路と
なる内部領域、すなわち弁孔７を有している。接
手筒４は、取入管２と弁体６の弁孔７とを連通す
る孔８を有している。また、接手筒４の中央部に
は、弁ガイド９が、たとえばねじ止めによつて、
取付けられている。さらに、弁体６の上部には、
弁蓋１１が、たとえばねじ止めによつて、取付け
られている。この弁蓋１１は、弁孔７を通過した
きた液化ガスをタンク３内に導くための孔１０を
有している。 The structure related to the valve body 6 and the float 12 will be specifically explained with reference to FIGS. 2 and 3. A joint tube 4 is fixedly attached to the upper end of the intake pipe 2. A hollow cylindrical valve body 6 is attached to this joint tube 4 via a screw or the like. The valve body 6 has an internal region that serves as a flow path for the liquefied gas supplied within the tank 3, that is, a valve hole 7. The joint tube 4 has a hole 8 that communicates the intake pipe 2 and the valve hole 7 of the valve body 6. Further, a valve guide 9 is attached to the center of the joint tube 4 by, for example, screwing.
installed. Furthermore, on the upper part of the valve body 6,
A valve cover 11 is attached, for example, by screwing. This valve cover 11 has a hole 10 for guiding the liquefied gas that has passed through the valve hole 7 into the tank 3.

タンク３内に充填される液化ガスによつて浮上
するフロート１２は、鉛直方向に延びる弁棒１３
を有している。この弁棒１３の下部には、茸状の
弁１４が固定して取付けられている。したがつ
て、弁１４は、フロート１２と一体となつて上動
する。また、弁体６の上部には、弁１４が所定位
置まで上動したとき該弁１４の弁部２０と当接し
て液化ガスの供給流路を閉じる弁座５が設けられ
ている。 A float 12 that floats up due to the liquefied gas filled in the tank 3 is connected to a valve rod 13 that extends in the vertical direction.
have. A mushroom-shaped valve 14 is fixedly attached to the lower part of the valve stem 13. Therefore, the valve 14 moves upward together with the float 12. Further, a valve seat 5 is provided on the upper part of the valve body 6, which comes into contact with the valve portion 20 of the valve 14 when the valve 14 moves up to a predetermined position, thereby closing the liquefied gas supply flow path.

さらに、図示するように、弁ガイド９は、弁１
４の下面と対向する対向壁部と、弁１４が相対的
に下方の位置から弁座５に当接する直前の位置に
至るまで弁１４の外周部に密着して該弁１４の下
面への液化ガスの流入を阻止する障壁部１９とを
有している。より具体的に説明すると、弁ガイド
９の中央部にはガイド孔１５が形成されている。
このガイド孔１５は、弁１４の円筒状の弁足１６
を上下動可能に受入れている。また、弁蓋１１の
中央部にも、弁棒１３を上下動可能に受入れるガ
イド孔１７が形成されている。障壁部１９は、弁
ガイド９の平らな上面１８の外周にリング状に形
成されている。この障壁部１９の内面は、弁１４
の弁部２０の下部に形成してある締切部２１に密
着するように形成されている。さらに、弁１４ま
たは弁ガイド９には、弁１４の下面と弁ガイド９
の対面壁部との間に形成される領域が真空状態と
なることを阻止し、しかも供給される液化ガスの
流体圧の影響を受けない微小断面の通気孔が設け
られる。図示する実施例では、弁１４に通気孔２
４が設けられ、弁ガイド９に通気孔２３が設けら
れている。これらの通気孔２３，２４の存在によ
つて、弁１４の上下動は円滑になされ得る。な
お、弁ガイド９の下面は逆円錐状に形成されてい
るので、弁孔７内での液化ガスを整流状態で弁１
４の上面に誘導できる。 Furthermore, as shown in the figure, the valve guide 9
The opposing wall portion facing the lower surface of 4 and the outer circumferential portion of the valve 14 from a relatively lower position to a position immediately before contacting the valve seat 5 are liquefied to the lower surface of the valve 14. It has a barrier part 19 that prevents the inflow of gas. More specifically, a guide hole 15 is formed in the center of the valve guide 9 .
This guide hole 15 is connected to the cylindrical valve foot 16 of the valve 14.
can be moved up and down. A guide hole 17 is also formed in the center of the valve cover 11 to receive the valve rod 13 so as to be movable up and down. The barrier portion 19 is formed in a ring shape around the flat upper surface 18 of the valve guide 9 . The inner surface of this barrier portion 19 is connected to the valve 14
The valve part 20 is formed so as to be in close contact with a closing part 21 formed at the lower part of the valve part 20. Further, the valve 14 or the valve guide 9 has a lower surface of the valve 14 and a valve guide 9.
A vent hole with a minute cross section is provided which prevents a vacuum state from forming in the area formed between the facing wall of the gas cylinder and the facing wall of the gas cylinder, and which is not affected by the fluid pressure of the supplied liquefied gas. In the illustrated embodiment, the valve 14 has a vent hole 2.
4 is provided, and a vent hole 23 is provided in the valve guide 9. The presence of these vent holes 23 and 24 allows the valve 14 to move up and down smoothly. In addition, since the lower surface of the valve guide 9 is formed in an inverted conical shape, the liquefied gas in the valve hole 7 is rectified and the valve 1 is
It can be guided to the upper surface of 4.

タンク３内への液化ガスの供給を開始すると
き、弁１４は第３図に示す位置にある。つまり、
取入管２、接手筒４の孔８を経由して弁体６の弁
孔７内に送られてきた液化ガスは、矢線で示すよ
うに弁１４の上面付近を通つて弁蓋１１の孔１０
からタンク３内に流れ込む。この場合、弁１４の
締切部２１と弁ガイド９の障壁部１９とが密着し
ているので、弁１４の下面には供給される液化ガ
スの流体圧が作用しない。こうして、タンク３内
に充填される液化ガスが所定量に達していないと
き、すなわち液面A1が所定の高さに至つていな
いときには、弁１４は、フロート１２、弁棒１３
および弁１４の自重によつて、第３図に示す位置
に保たれる。 When starting the supply of liquefied gas into the tank 3, the valve 14 is in the position shown in FIG. In other words,
The liquefied gas sent into the valve hole 7 of the valve body 6 via the intake pipe 2 and the hole 8 of the joint tube 4 passes through the vicinity of the top surface of the valve 14 and enters the hole of the valve cover 11 as shown by the arrow. 10
It flows into tank 3 from there. In this case, since the shutoff portion 21 of the valve 14 and the barrier portion 19 of the valve guide 9 are in close contact with each other, the fluid pressure of the supplied liquefied gas does not act on the lower surface of the valve 14. In this way, when the liquefied gas filled in the tank 3 has not reached a predetermined amount, that is, when the liquid level A1 has not reached a predetermined height, the valve 14
The valve 14 is held in the position shown in FIG. 3 by its own weight.

第３図に示す状態から液化ガスがさらに充填さ
れると、弁１４はフロート１２の浮上によつて上
動を開始する。しかし、弁１４が弁体６の弁座５
に当接する直前の位置に至るまでは、弁１４の締
切部２１と弁ガイド９の障壁部１９とが密着して
いるので、弁１４の下面に対して液化ガスの流体
圧は作用しない。したがつて、弁１４が液化ガス
の流入圧力によつて急激に持ち上げられるという
ことはない。 When the liquefied gas is further filled from the state shown in FIG. 3, the valve 14 starts to move upward due to the floating of the float 12. However, the valve 14 is located at the valve seat 5 of the valve body 6.
Since the closing portion 21 of the valve 14 and the barrier portion 19 of the valve guide 9 are in close contact with each other until the valve 14 reaches the position immediately before contacting the valve 14, the fluid pressure of the liquefied gas does not act on the lower surface of the valve 14. Therefore, the valve 14 will not be suddenly lifted up by the inflow pressure of the liquefied gas.

次に、第４図に示すように、タンク３内に充填
される液化ガスの液面A2がほぼ所定の高さに達
したとき、弁１４の締切部２１が弁ガイド９の障
壁部１９から離れる。その結果、弁１４の下面に
は供給液化ガスの流体圧が作用し、弁１４を直ち
に上方に持ち上げるように付勢する。そして、最
終的には、第５図に示すように、弁１４の弁部２
０と弁体６の弁座５とが当接して、液化ガスの供
給流路を閉じ、液化ガスの流入を遮断する。 Next, as shown in FIG. move away from As a result, the fluid pressure of the supplied liquefied gas acts on the lower surface of the valve 14, immediately urging the valve 14 to lift upward. Finally, as shown in FIG.
0 and the valve seat 5 of the valve body 6 come into contact with each other, closing the liquefied gas supply flow path and blocking the inflow of liquefied gas.

［発明の効果］ 以上のように、この発明によれば、タンク内に
充填される液化ガスの液面が所定のレベルに達す
るまでには、弁の下面に対して供給液化ガスの流
体圧が作用しない。したがつて、弁は、流体圧に
左右されずフロートの浮力のみによつて上動す
る。こうして、この発明においては、従来の弁で
見られたような誤動作、すなわち供給される液化
ガスの流体圧によつて弁が持ち上げられ、そのた
めに充填初期において弁座を塞いでしまうという
ような誤動作は、生じない。[Effects of the Invention] As described above, according to the present invention, the fluid pressure of the supplied liquefied gas with respect to the lower surface of the valve increases until the liquid level of the liquefied gas filled in the tank reaches a predetermined level. Doesn't work. Therefore, the valve moves upward only by the buoyancy of the float without being affected by fluid pressure. Thus, the present invention eliminates malfunctions seen in conventional valves, such as the valve being lifted up by the fluid pressure of the supplied liquefied gas and thereby blocking the valve seat at the beginning of filling. does not occur.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、この発明の実施例が適用されるタン
クの一例を示す縦断面図である。第２図は、この
発明の一実施例の要部を示す縦断面図である。第
３図は、この発明の一実施例の要部を拡大して示
した縦断面図である。第４図は、第３図に示す状
態から弁が上動した後の状態を示す縦断面図であ
る。第５図は、第４図に示す状態から、弁がさら
に上動した後の状態を示す縦断面図である。 図において、３はタンク、５は弁座、６は弁
体、９は弁ガイド、１２はフロート、１４は弁、
１９は障壁部、２３，２４は通気孔を示す。 FIG. 1 is a longitudinal sectional view showing an example of a tank to which an embodiment of the present invention is applied. FIG. 2 is a longitudinal cross-sectional view showing a main part of an embodiment of the present invention. FIG. 3 is a vertical sectional view showing an enlarged main part of an embodiment of the present invention. FIG. 4 is a longitudinal sectional view showing the state after the valve has moved upward from the state shown in FIG. FIG. 5 is a longitudinal cross-sectional view showing the state after the valve has moved further upward from the state shown in FIG. In the figure, 3 is a tank, 5 is a valve seat, 6 is a valve body, 9 is a valve guide, 12 is a float, 14 is a valve,
Reference numeral 19 indicates a barrier portion, and reference numerals 23 and 24 indicate ventilation holes.

Claims (1)

【特許請求の範囲】 １ タンク内に充填される液化ガスによつて浮上
するフロートと、 前記フロートに取付けられ、該フロートと一体
に上動する弁と、 タンク内に供給される液化ガスの流路となる内
部領域を有する中空筒状の弁体と、 を備え、 前記弁は、前記弁体の内部領域内に位置し、 前記弁体の上部には、前記弁が所定位置まで上
動したとき該弁と当接して液化ガスの供給流路を
閉じる弁座が設けられており、 前記弁体の内部領域内には、前記弁の下面と対
面する対面壁部と、前記弁が相対的に下方の位置
から前記弁座に当接する直前の位置に至るまで前
記弁の外周部に密着して該弁の下面への液化ガス
の流入を阻止する障壁部と、を有する弁ガイドが
配置されており、 前記弁または前記弁ガイドには、前記弁の下面
と前記弁ガイドの対面壁部との間に形成される領
域が真空状態となることを阻止し、しかも供給さ
れる液化ガスの流体圧の影響を受けない微小断面
の通気孔が設けられている、液化ガス過充填防止
用弁の誤動作防止装置。[Scope of Claims] 1. A float that floats up due to the liquefied gas filled in the tank, a valve that is attached to the float and moves upward together with the float, and a flow of the liquefied gas that is supplied to the tank. a hollow cylindrical valve body having an internal area serving as a passage; the valve is located within the internal area of the valve body; A valve seat is provided which contacts the valve and closes the liquefied gas supply flow path, and in the internal area of the valve body, there is a facing wall portion facing the lower surface of the valve, and a valve seat that contacts the valve and closes the liquefied gas supply flow path. A valve guide is disposed in the valve guide having a barrier portion that is in close contact with the outer circumferential portion of the valve from a lower position to a position immediately before contacting the valve seat to prevent liquefied gas from flowing into the lower surface of the valve. The valve or the valve guide is configured to prevent a region formed between a lower surface of the valve and a facing wall portion of the valve guide from being in a vacuum state, and to prevent the fluid of the liquefied gas to be supplied. A malfunction prevention device for a liquefied gas overfill prevention valve that is equipped with a vent hole with a minute cross section that is not affected by pressure.
JP21669282A 1982-12-10 1982-12-10 Erroneous operation preventing device in valve for preventing overcharging of liquefied gas Granted JPS59106782A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21669282A JPS59106782A (en) 1982-12-10 1982-12-10 Erroneous operation preventing device in valve for preventing overcharging of liquefied gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21669282A JPS59106782A (en) 1982-12-10 1982-12-10 Erroneous operation preventing device in valve for preventing overcharging of liquefied gas

Publications (2)

Publication Number Publication Date
JPS59106782A JPS59106782A (en) 1984-06-20
JPS6233474B2 true JPS6233474B2 (en) 1987-07-21

Family

ID=16692424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21669282A Granted JPS59106782A (en) 1982-12-10 1982-12-10 Erroneous operation preventing device in valve for preventing overcharging of liquefied gas

Country Status (1)

Country Link
JP (1) JPS59106782A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1688651B1 (en) * 2000-12-15 2008-04-02 Luxembourg Patent Company S.A. Control valve for pipeline or bottle comprising compressed or liquified gas
KR20010090088A (en) * 2001-09-13 2001-10-18 이정자 LPG Evaporation Construction
KR100469226B1 (en) * 2002-04-12 2005-02-02 강기묵 Vaporizer for preventing liquid from flowing out
JP2007155046A (en) * 2005-12-07 2007-06-21 Chuo Motor Wheel Co Ltd Over-filling preventive valve device
CN114440119A (en) * 2022-01-25 2022-05-06 武汉克莱澳科技有限公司 Liquid nitrogen filling machine of float-type automatic control liquid level

Also Published As

Publication number Publication date
JPS59106782A (en) 1984-06-20

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