罐壓裝置說明書-中英對照

A comparison of FIGS. 2-4 illustrates the opening action of valve element 40. When the valve is in the closed position shown in broken lines in FIG. 2, a tank/canister pressure differential acts across the area of the valve element overlie vent outlet 32 tending to keep it in the closed position. As float 46 drops with the liquid fuel level, however, its weight acts through claw flange 49 to peel or pry paddle 40 loose in a peel, lock and translate motion. Lower end 49a of flange 49, farthest from the outlet and therefore generating the greatest moment, first contacts prongs 43 to create an initial opening moment sufficient to peel and break the seal between valve element 40 and vent outlet 34 as shown in FIG. 3. The initial break effectively eliminates the tank/canister differential across the valve element, and further downward travel of float 46 levers the prong end of the valve element into full locking engagement flush with claw flange 49 as shown in FIG. 4. The arcuate nature of the surfaces of guide post 47 on which valve element 40 rides ensures smooth pivotal travel of the valve element from the initial break to its full engagement with claw flange 49.
比較圖2-4說明了閥芯40的開啟過程。當(dāng)閥芯在停止位置即圖2中的虛線位置時，一罐壓差作用于排氣口32處的閥芯區(qū)域，該排氣口保持閥芯處在停止位置。由于浮標(biāo)46降至液體燃料水平面，但是其重量作用于爪法蘭49從而剝落或探查短槳40使其在剝落、鎖定和轉(zhuǎn)化行為中變得松散。法蘭49的底端49a，離排氣口最遠(yuǎn)，因此產(chǎn)生最強的力矩，最先與彈簧43接觸，形成開放的初力矩，足夠剝落或損壞閥芯40與排氣口34之間的封鉛，如圖3所示。 初步打破有效消除了閥芯的罐壓差，浮標(biāo)46的進(jìn)一步下沉抬起了閥芯的彈簧末端，使其與爪法蘭49完全嚙合，如圖4所示。閥芯40所在的導(dǎo)柱47的弓狀表面保證閥芯順利地完成最初的突破到與爪法蘭49的完全嚙合.

Once this lock occurs, vent closure end 41 is still in partial contact with valve seat 34. The pivotal opening action of the paddle ceases and float 46, acting through claw flange 49, now exerts an axial, translational opening force on the valve element to pull it completely free. Valve element 40 then drops to the rest position shown in solid lines in FIG. 2.
一旦鎖定發(fā)生，排氣口的關(guān)閉末端41仍部分與閥座34接觸。短槳的關(guān)鍵性開啟行為終止，通過爪法蘭49起作用的浮標(biāo)46現(xiàn)在向軸芯施加軸向位移的開啟力，使其完全開放。接著閥芯40下降至圖2所示的實線的具體位置。

Accordingly, the opening of the peel-away valve element 40 occurs in a three-step motion: the initial pivotal peel-away break effected by the lower end 49a of claw flange 49; the lock between flange 49 and valve element 40; and the subsequent axial translation of valve element
因此，剝落的閥芯40的開放過程分為三個步驟：爪法蘭49的底端49a造成最初的關(guān)鍵性剝離和損壞；法蘭49和閥芯40之間的鎖定；以及隨后的閥芯軸向位移。
 
The "hammer claw" or "pry bar" mechanism of the embodiment of FIGS. 2-4 achieves an approximately 6:1 mechanical advantage with respect to the opening force applied to valve element 40. The mechanical advantage of the hammer claw embodiment of the invention is of course a function of the length of the lever arm portion of valve element 40 between the leftmost edge of valve seat 34 (the pivot point) and contact point at lower end 49a of flange 49. The 6:1 ratio was deemed to be optimum in view of the size limitations of the overall valve in this particular embodiment. By increasing the width of float 46 or the radial offset of float 46 and valve seat 34, it is possible to employ and utilize a valve element with a longer lever arm portion.
"爪錘"或"撬桿"機制圖2-4. 其中達(dá)到大約6:1的關(guān)于開啟力的機械效益，用于閥芯40。 機所發(fā)明的爪錘的機械效益當(dāng)然是當(dāng)然的閥芯的杠桿臂部分的長度的一項功能，該閥芯40位與閥座34最左邊緣 (支點)與法蘭49的底端49a的接觸點之間。鑒于本閥特別裝置的整體規(guī)模局限性，6:1的比例被認(rèn)為是最佳的。 通過增加浮標(biāo)46的寬度或浮標(biāo)46與法閥座34的徑向抵消，有可能使用一個杠桿臂部分更長的閥芯。

Referring now to FIGS. 5-7, an alternate embodiment of the invention is illustrated using a compound lever arrangement to increase the mechanical opening advantage exerted by the float.
現(xiàn)在請看圖5-7，發(fā)明的備用裝置采用復(fù)式杠桿排列來提高浮標(biāo)的機械開啟效益。.

In FIGS. 5-7 the compound lever embodiment of the valve opening mechanism is shown generally comprising an outer rectangular lever arm 138 and an inner rectangular valve element 140. Valve element 140 in the valve closed position shown in solid lines in FIG. 5 completely covers valve seat 34. Valve element 140 is connected at one end to lever arm 138 by way of an actuation pin 142 integrally formed in lever arm 138 and defining one end thereof. The cylindrical actuation pin 142 slightly mates with a suitable smooth surface on the end of valve element 140. Valve element 140 rotates about pivot point 146.
在圖5-7中，閥芯開放式機械裝置的復(fù)式杠桿裝置一般由外部的矩形杠桿臂138和內(nèi)部的矩形閥芯140構(gòu)成。閥芯140在閥停止位置如圖5實線所示，完全覆蓋了閥座34。閥芯140得一端與杠桿臂138連接，通過驅(qū)動銷142完全與杠桿臂138連接，并將其中的一端固定其中。元實線顯示在無花果。筒形驅(qū)動銷142與閥芯140尾端的合適的光滑表面稍微緊密結(jié)合。 閥芯140圍繞支點146旋轉(zhuǎn)。

2014.8.31