Uncovering the Hidden Truth Behind the Safety Valve: You Won't Believe What We Found!
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- เผยแพร่เมื่อ 19 ม.ค. 2017
- In this video, we're going to share with you something that you're going to want to keep an eye on. We've uncovered something amazing, and we think you're going to want to hear about it!
We're talking about the Safety Valve, and what we discovered is going to change the way you look at the product. It's something you're going to want to keep an eye on, and we hope you'll stay tuned to find out what happens next!
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Great..thanks..😄😄😄
wonderful presentation ! many thanks !
Ur welcome and thanks for ur share our friend
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Good lecture sir. It’s a big help to us.
I’ve a question, do we need to adjust upper adjusting ring and lower adjusting ring when we need to increase the blowdown? Or we can only adjust the position of the lower adjusting ring to a higher position? Thanks!
Lower is adjusting ring; upper is adjusting nut or screw.
For blowdown you use adjusting ring.
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Good lecture
Thanks,ur welcom
Wow thanks this is nice video
Thanks,my dear and ur welcome
Very nice
+Emy Emy u r welcom
Thanks!
Ur welcome 👍
What about the rest of the video? What is the name of original source? Thanks...
What's the purpose of lip and huddling chamber here???
The device we need is a safety valve huddling chamber safety valve like the relief valve we saw earlier a safety valve consists of a valve body or casing and an outlet for system pressure to flow through it also has a disc sometimes called a feather which in this case has a replaceable seat bushing the disk is held against its seat by a spring of the disk is Guided by a gift card and the spindle attached to the desk and runs through the center of the spring unlike the relief valve we saw this safety valve has to Spring washers and one below the spring please hold the spring in place explain adjusting screw control spring tension the lock nut holds the adjusting screw in proper position so far this safety valve is almost identical to a relief valve dial has some parts that are relief valve may or may not have first desert release not at the top of the spindle release nut is part of a hand lifting assembly one or two lifting levers each lever is connected to the valve for the pivot pin protesting the valve and for making certain it is clear of any obstructions the levers are raised levers and turn push upward on the release lifting the spindle and disc the valve closes again with the levers of lowered the hand lifting assembly on top of the spindle while covered by a valve cap a big difference between a safety valve and a relief valve is a shape of a disc notice that the disc or feather of a safety valve has a lip which is not exposed to system pressure when the valve is closed notice also that there is a small chamber called huddling chamber just below the disc adjusting ring that's threaded onto the outer edge of the seating area adjusting Wing is prevented from turning by a ring in that protrudes through the wall of the valve body now let's see how these components work together pressurized fluid usually gases team is always in contact with the central portion of the disc call the pressure sensing area again let's assume that normal system pressure is 18 PSI and that the valve is set to open at 20 psi 19 PSI nothing happens but at 20 or feather begins to lift off the seat suddenly look up the disk which wasn't exposed to system pressure is exposed to system pressure what's the area of the disc is exposed there is more total Force being exerted on the disc even though system pressure Remains the Same force causes the disc to pop open to about 60% disconnect 60% open position velocity of the escaping steam striking the disc system pressure increases further the velocity of the steam also increases and the two forces will lift the desk even higher popping the safety valve accomplish who gives over pressurized gas what's team of wide Escape Route why do they escape room unless philosophy the escaping fluid has velocity the pumping action of the valve minimizes the steam cutting that can result from a high velocity flow of steam now we know that there's a major difference between the way a relief valve opens and the way of safety valve opens close here's our sexy about still in the open position pressure begins to decrease and along with it the velocity of the steam kingstree gained the advantage pushing the disc download system pressure is at the point for the valve first opened but because the lip of the disk is still exposed to system pressure and steam velocity the valve remains open only one system pressure drops below the set point of the valve the valve snap shut options instead of closing graduate to abruptly cut off the flow of steam there by minimizing steam cutting all Christmas team trapped in the huddling chamber prevent the disc and seat from slamming together hard enough to be damaged pusheen the basics of how a safety valve operate let's go back and watch the operation in Greater detail as we do we're going to learn a few new trucks popping pressure simile blow down or blow posit going to explore the purpose of the adjusting ring that we mention but never explained once again here's our safety valve como now and the valve is adjusted to open at 20 psi 20 psi then it said to be for popping pressure the valve papa win system pressure increases the disc rise is often seek but it hasn't pressure hasn't had time to act on the lips of the disc the disc is lifted only slightly is called simmering simmering last only a split second until system pressure acts on the lips of the disc uPS open system pressure continues to rise then levels off to drop even when pressure drops back down to popping pressure valve remains open because the lip of the disk is still exposed to system pressure and steam velocity only when system pressure has dropped below popping pressure is it spring able to shut the valve only in place against that seat has positive seating seating is important to ensure that there is no leakage the popping pressure and the positive sitting pressure is called a blowdown for blowback of the valve laparkan pressure is 20 psi positive seating occurs at 19 PSI so the world why is Boomtown important in the safety valve let's consider a case with a popping pressure is 20 psi and the positive seating pressure is also 20 psi 20 psi valve simmers and continues to rise as pressure increases on pressure drops back 220 PSI the disc returns to its peak psi's both feeling pressure and popping pressure as long as system pressure remain 220 PSI the valve can't make up its mind whether to remain closed or Bob open again the disk is likely to jump up and down on its eat until pressure either increases enough to pop it or drops enough to give his positive City please call chattering from machine gun it because of the sound it makes is a serious problem it can severely damage the disc and the seat chattering by ensuring that popping pressure and positive sitting pressure are different popping pressure of a safety valve can be adjusted by turning the adjusting screw and increasing or decreasing spring tension blowdown is adjusted by the changing the setting of The adjusting ring we can see how the position of the adjusting ring with X blowdown by studying what happens when the valve is closing remember and the position of the disc is determined by both the amount of system pressure striking the disc adjusting Maniacs like the nozzle of a garden hose get direct escaping steam right against the desk which of the steam is aimed at the desk the velocity of the steam exerts a large amount of upward Force system pressure must drop well below popping pressure before the spring and force the disc back onto its seat raising the adjusting ring then increases the blowdown of the valve once again with the valve and it's open position lets the lower the adjusting ring without the ring directing steam at the desk much less escaping steam strikes the disc on its way to the outlet as a result of velocity of the steam exerts less upward force on the desk because the system pressure is getting Little Help from the escaping steam it takes more system pressure than before to hold the disc open tingling in this position available close against higher system pressure and when the rain was raised a blowdown of the valve the difference between popping pressure and positive seating pressure decreases as a general rule then are the blow down a lower the position of the Ring Aloha the blow down standing on one ring idling chamber safety valve read through section
Your drain in your exhaust is too high up. It will flood the seat and body causing it to rust and possibly jam the valve shut.
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@@razamehdi2331 I think they meant the lever on the safety valve lol but informative comment.
It is called easing gear lever we can connect a long wire to the lever and in emergengy we can lift the safety valve from safe distance just by pulling wire...
Great. Thanks for your share
...do people put one on u, so to speak, even if their means are negative in general
...giving fate a door...
..solving the plot he was in...
Incomplete video