رگلاتورهای فشار

رگلاتورهای فشار

اسلاید 1: رگلاتورهای فشار چگونه کار می کنند...؟دوره 1آموزشی –رگلاتورهای فشارشرکت طاها کیمیا تجهیز http://tahakimia.ir/http://regulators.ir/

اسلاید 2: رگلاتورهای فشار چگونه کار می کنند...؟با سلام و عرض ادببه استحضار می رساند؛ به منظور حفظ دقیق مباحث معنائی، با توجه به اینکه مطالب کاملا فنی می باشند از ترجمه متون استفاده شده، خودداری شده است. لذا در صورت هر گونه ابهام در مطالب ارائه شده با این شرکت مکاتبه فرمائید.

اسلاید 3: Why is it important to regulate Pressure in a Piping System?Pressure is one of the most important aspects of ANY piping system. If pressure is too low, for example, the system is powerless. And if it is too high…

اسلاید 4: Just as high blood pressure damages the vital organs in your “piping system,”overpressure affects filters, tools, sprayheads, instruments…any vital tool in a liquid piping system.

اسلاید 5: Purpose of a Pressure Regulator…Imagine having an employee who continuously monitors a single pressure gauge, and constantly tweaks a valve as downstream pressure rises or falls past a pre-determined point.

اسلاید 6: A Pressure Regulator Works Automatically…and it won’t get carpal-tunnel. It simply reacts to changes in pressure.

اسلاید 7: Uses of a Pressure Regulator:As a control element, to ensure that downstream pressure does not exceed a set point.As a safety device, to protect equipment from harmful overpressure.Regulate to the correct pressure range so that a flow system or piece of equipment can operate safely and effectively.

اسلاید 8: Remember this simple definition: • A pressure regulator is a normally-open valve that takes a high inlet pressure and converts it to a lower, pre-set downstream pressure.

اسلاید 9: A Set Screw is used to set the desired pressure. It does this by controlling the force of non-wetted steel springsThe springs are attached to, and the force of the springs presses down, the main shaftThe valve seat is part of the main shaft, and thus is held “open” by the force of the springs.How it Works continues…How it Works…INLETOUTLET

اسلاید 10: While the spring is holding the valve open and liquid is flowing through, a small tube near the valve outlet – called the “sensing orifice” – transmits downstream pressure into a chamber.Because pressure is equal in all directions, the pressure in the chamber is identical to downstream pressure.SENSINGORIFICEPRESSURECHAMBER

اسلاید 11: SENSINGORIFICEPRESSURECHAMBERVALVE OUTLETROLLING DIAPHRAGMThe key to this pressure chamber is a large Rolling Diaphragm. It rolls upward as pressure increases, and back down as pressure decreases…In other words, it moves up and down in direct response to changes in downstream pressure.

اسلاید 12: SENSINGORIFICEPRESSURECHAMBERVALVE OUTLETROLLING DIAPHRAGMThe Rolling Diaphragm is attached to the Main Shaft that we mentioned earlier – which as you recall, is held down by spring force, which in turn holds the valve open.SPRINGFORCE M AIN SHAFT VALVE IS HELD OPEN But when pressure at the outlet increases…

اسلاید 13: …as downstream pressure increases, the force on the rolling diaphragm increases, in direct opposition to the spring force...

اسلاید 14: When downstream pressure exceeds the spring force, the rolling diaphragm overpowers the springs. This compresses the springs and forces up the main shaft...

اسلاید 15: The valve seat, as part of the main shaft, closes against the main internal orifice, preventing additional pressure downstream. It will remain closed as long as downstream pressure exceeds the set point, as determined by the set screw controlling the force on the springs.

اسلاید 16: When downstream pressure falls below the set point, the valve begins to re-open as the springs again force the main shaft down. Flow resumes..

اسلاید 17: Although accurate, the preceding explanation is overly simplified. In most applications, a properly set pressure regulator quickly finds a “balance” – as long as inlet pressure is higher and relatively constant, and downstream conditions are stable. The valve stays partially open, with the force of the downstream pressure against the rolling diaphragm and the force of the internal springs in a state of equilibrium.

اسلاید 18: As events occur downstream…When a faucet is closed downstream, pressure will build in the downstream pipeline – and at the outlet of the regulator. If the closed faucet causes downstream pressure to build to the set point, the regulator will close until the pressure drops.

اسلاید 19: When the faucet is re-opened, pressure will drop in the downstream pipeline – and at the outlet of the regulator. The spring will force the regulator open, and pressure will seek the desired level downstream. Actual downstream pressure will depend on many variables, including flow rate, inlet pressure, and other factors.Similarly…

اسلاید 20: What a Pressure Regulator WON’T Do:(common misconceptions)It can’t convert a low inlet pressure to a higher downstream pressure – it won’t function like a pump.It won’t control backpressure.

اسلاید 21: تهیه و تنظیم توسط بخش فنی شرکت طاها کیمیا تجهيزآدرس: تهران- خ جمهوری اسلامی- خیابان جمالزاده جنوبی- نرسیده به خیابان لبافی نژاد- ابتدای بن بست بهزادی-شماره 35- طبقه 2  تلفن: 66431041 - 66921407 - 66944330 -66922342فاکس: 66430339 پست الکترونیکی: info@tahakimia.comپایگاه اطلاع رسانی: www.tahakimia.irوب سایت تخصصی رگلاتور و بک پرشر رگلاتور: http://regulators.ir/