Manifold Strainer Pulsation Dampener
Best-all Petroleum Machinery Co., Ltd.
Since 2010, Best-all Petroleum Machinery Co., Ltd. has been supplying high quality products to the oil well drilling industry. Our core focus is to provide performance enhancing mud pump parts and solutions that meet the oil well drilling standards. We have developed, tested and enhanced mud pump components that decrease downtime, improve safety and perform in the toughest drilling environments.
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Our Factory
Since 2010, Best-all Petroleum Machinery Co., Ltd. has been supplying high quality products to the oil well drilling industry. Our core focus is to provide performance enhancing mud pump parts and solutions that meet the oil well drilling standards. We have developed, tested and enhanced mud pump components that decrease downtime, improve safety and perform in the toughest drilling environments.
Our Product
Fluid end expendables: liners, pistons, valves & seats, extension rod, piston rod, clamps
Fluid end modules & accessories
Refurbishment & overhaul parts
Power end components
Pulsation dampener & Discharge Strainer
Discharge & Suction Manifold
Production Equipment
Best-all Petroleum Machinery Co., Ltd. Funishes all facilities including casting, forging, heat-treating, milling and CNC lather.
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United States, Canada, Mexico, Colombia, Brazil, Middle East, India, Germany, Netherlands, Great Britain, Poland, Russia.
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Suction and Discharge ManifoldBest-all supplies suction and discharge manifold for OEM and Southwest fluid end complete.TheAdd to Inquiry -
Discharge Strainer CrossBest-all supply casting steel discharge strainer for BOMCO, EMSCO, Honghua and other F series mudAdd to Inquiry -
Mud Pump Relief ValveBest-all provide shear relief valve and reset relief valve for mud pumps.Add to Inquiry -
Pressure GaugeBest-all supplies various mud pumps pressure gauge.. Connection: Threaded, flange, unionAdd to Inquiry -
Pulsation Dampener and BladderBest-all provide KB-45, KB-75, .K-10, K-20, PD-45 & PD-55 pulsation dampeners and replacementAdd to Inquiry
- Tel: +86-533-8171332
- Fax: +86-533-8171332
- Sales01@bp-mudpump.com
- Add: Room 702, Block B, 105 Liuquan Road, Hi-tech Zone, Zibo, China
What is Pulsation Dampener
A pulsation damper is an equipment capable of playing a very important role in the use of double diaphragm pumps. As can be seen from the name, this accessory is aimed at reducing pulsations and vibrations during pump operation, thus ensuring a “continuous” and precisely non-pulsed flow rate and a reduction of vibrations on the system pipes.
Advantages of Pulsation Dampener
Enhanced product quality
In industries where precise flow rates are essential, pulsation dampeners contribute to consistent product quality and reliable processes.
Safety and reliability
Dampeners contribute to safer working conditions by preventing sudden pressure surges that could potentially damage equipment or lead to accidents.
Improved pump and system performance
By reducing pulsation, pulsation dampeners contribute to a more consistent and efficient pump performance by decreasing the friction between the media and the system. This, in turn, increases the overall system efficiency.
Increased equipment lifespan
Minimizing the stress to the pump and system components leads to a longer lifespan for equipment. Pulsation dampeners can act as a protective barrier, reducing the wear and tear associated with uncontrolled pressure fluctuations.
Reduced noise and energy savings
The dampening of pressure spikes not only reduces friction, but also results in quieter pump operation. Improved efficiency can also save energy, making pulsation dampeners a sustainable and cost-effective solution.
Low maintenance
A pulsation dampener usually requires little or no maintenance during its service life. However, regular inspections are recommended to check for general wear and leakage, particularly for inline pulsation dampeners.
How Does a Pulsation Damper Work
A pulsation damper works thanks to the same compressed air that feeds the pump. The compressed air introduced into the counter-pressure chamber behind the membrane creates a pneumatic damping cushion that self-adjusts according to the stress exerted by the pressure pulse of the fluid generated by the pump.
Dampers are used with fluids of high apparent viscosity even in the presence of solid parts in suspension. They automatically adapt to the system conditions, without manual adjustment or calibration. The high ability to minimize pulsations, vibrations and water hammers makes this component a suitable equipment for safeguarding the system, giving regularity to the outgoing flow. The wide choice of construction materials allows you to determine the best chemical compatibility with the fluid and / or the environment without neglecting the correct temperature range. The dampers are also available for use in a potentially explosive environment (ATEX certification).
Inside the hydraulic systems, the pulsations of the fluid can cause phenomena called water hammer consisting of pressure peaks caused by a sudden change in the flow rate inside the pipes or by the sudden closure of a valve. The effects of water hammer vary according to the size of the pipeline and the speed and density of the fluid but can often cause extensive damage to the elements of a system. To preserve the system from water hammer and vibrations, it is possible to use the pulsation dampers of the series that can automatically adapt to the operating conditions of the pump.
Pulsation Dampener vs Vibration Dampener
|
Aspect |
Pulsation Dampener |
Vibration Dampener |
|
Purpose |
Mitigates pressure fluctuations (pulsations) in fluid systems. |
Reduces or absorbs mechanical vibrations or oscillations. |
|
Mechanism |
Absorbs and dampens pressure pulsations using diaphragms, bladders, or pistons. |
Absorbs or dissipates mechanical vibrations using materials with damping properties. |
|
Frequency |
Targets lower-frequency pressure fluctuations (often associated with reciprocating pumps or compressors). |
Addresses mechanical vibrations that occur at various frequencies. |
|
Application Areas |
Commonly used in fluid systems such as pumps, compressors, and pipelines to ensure consistent flow. |
Applied to structures, machinery, and equipment to reduce vibrations and prevent damage. |
|
Impact on System |
Ensures a steady flow and prevents damage to downstream equipment. |
Protects equipment from wear, improves reliability, and reduces noise. |
|
Components |
May include diaphragms, bladders, gas chambers, and connecting fittings. |
Can consist of elastomeric materials, springs, dampening compounds, and mounts. |
|
Examples of Use |
Oil and gas, chemical processing, water treatment, and pharmaceutical industries. |
Automotive suspension systems, machinery mounts, chemical industries, and building structures. |
|
Effect on Performance |
Enhances system efficiency, extends equipment lifespan, and promotes consistent product quality. |
Improves equipment reliability, reduces wear, minimizes noise, and prevents structural damage. |
|
Installation and Sizing |
Requires proper sizing and installation to match the flow and pressure characteristics of the system. |
Sizing and installation depend on the specific application and type of vibration being addressed. |
Pulsation dampers are normally applied to pneumatic double diaphragm pumps. The latter, during the phases of use, can record pressure peaks which, if not controlled, can damage the elements of a system. The main benefits associated with the use of pulsation dampers can be summarized in the following points.
Minimize or eliminate pulsations to the advantage of the equipment downstream of the system.
Protect the welds and pipe supports and system components from damage due to pressure.
Considerably limit pump vibrations thus ensuring better efficiency performance.
Reduce the effects of loading on the pump.
Preserve the efficiency and duration of any filters.
Reduce noise pollution resulting from pump operation.
The application of diaphragm pumps equipped with pulsation dampers refer to the entire process industry: hydraulic systems, use in chemical transformation processes, use within the petrochemical, mining sectors and much more.
Materials Used in Pulsation Dampener
Adjustable dampeners can be set or tuned to accommodate different pressure ranges and response rates.
Automatic dampeners use a valve in the device's non-wetted section to allow increases in air pressure to balance increases in liquid pressure.
Chargeable dampeners fill a chamber with compressed air or nitrogen gas to create a cushion that absorbs pressure pulses within the system.
By contrast, liquid-filled pulsation dampeners use a fluid-filled cavity to smooth the system.
Suction-lift dampeners provide a stabilizer on the inlet side of the pump to reduce acceleration and ensure even pump feeding.
Pressure snubbers are positioned before a pressure gauge to provide protection against pulsations in the measured media.
Specifications for pulsation dampeners include maximum pressure, capacity, inlet size, and inlet type. Many suppliers specify maximum pressure in pounds per square inch (psi) and capacity in cubic inches (in3). Inlet size is usually expressed in inches (in).
Pulsation dampeners use bladders or bellows made from a variety of materials.
Buna-N provides good resistance to petroleum hydrocarbons and fuels.
Ethylene propylene (EPDM) offers good resistance to sunlight, weather and ozone.
Chlorosulfonated polyethylene (CSM) provides excellent resistance to ozone, oxidation, sunlight, and weathering.
Neoprene is used over a wide temperature range and displays outstanding physical toughness.
Polyvinyl chloride (PVC) has good flexibility, a smooth surface, and nontoxic qualities. Because of its inert nature, some PVC grades are used in food and chemical handling applications.
Polytetrafluoroethylene (PTFE) is an insoluble compound that exhibits a high degree of chemical resistance and a low coefficient of friction.
Silicones are polymers that provide heat, cold, and weather resistance; electrical insulation; good release; and water repellency.
Housing Materials
Selecting pulsation dampeners requires an analysis of housing materials.
Acetal polymers offer excellent lubricity, fatigue resistance, and chemical resistance.
Polyvinylidene fluoride (PVDF) is a melt-processable fluoropolymer with better strength and lower creep than other fluoropolymers.
Polypropylene is a thermoplastic material that exhibits excellent cold flow, bi-axial strength, and yield elongation properties. It is similar to PVC but can be used in exposed applications because of its resistance to UV, weathering, and ozone.
Volumetric pumps are used to precisely dose a constant volume of liquid, so the pump must be filled completely with every suction stroke piston displacement cycle. If the pressure in the liquid inlet port of the pump can easily overcome the resistance of the suction valve spring (3 bar) and the section of the suction pipe is about twice the discharge section of the pump, a pulsation dampener at the suction inlet is unnecessary. If the static pressure of the liquid at the pump inlet is less than 3 bar, the suction pipe is longer than 3 to 5 meters from the suction liquid supply tank to the pump inlet, and the liquid has a low vapor tension at the working temperature, cavitation could occur. When this happens, the pump suctions a mix of liquid and its vapor. When this mixture is compressed, the pump impulsion pressure causes the condensation of the vapor. In turn, this reduces volume.
Cavitation, which is often signaled by a soft explosion-like sound, reduces the life of the pump and prevents the pump from providing the required dosing. To avoid this problem, users should ensure that the pressure at the pump inlet port is lower than or close to the vapor tension of the liquid. Users should also prevent the suction pipe liquid column from being subjected to accelerations and decelerations caused by the operation of the pump. A pulsation dampener can prevent these changes.
The pulsation dampener at the suction of the pump has the same task as the one at the discharge—to keep the velocity and pressure of the liquid as constant as possible. If the low pressure at the suction stays relatively constant, the liquid is less likely to reach the vapor tension. This greatly reduces the main risk for cavitation. The pulsation dampener cannot prevent cavitation if all its determinants are present. So when a risk exists, a pulsation dampener should be installed to reduce the risk in an auxiliary centrifugal or similar pump. Raising or pressurizing the liquid supply tank can increase the pressure at the inlet port of the dosing pump, also reducing the risk of cavitation. For pulsation dampeners installed to avoid cavitation, consider the following recommendations:
The size or volume of the dampener installed at the suction must be approximately twice that of the dampener installed at the discharge.
The size of the connection port of the dampener must be larger than or equal to the diameter of the suction pipe.
The dampener must be installed with the least possible pipe length between it and the pump liquid inlet port.
The gas charging or inflating pressure must be below atmospheric pressure.
Differences Between a Snubber and Pulsation Dampener
Snubbers and pulsation dampeners are both devices used in fluid systems to control and manage pressure fluctuations, but they serve different purposes and operate through distinct mechanisms. Let's explore the key differences between the two:
Purpose:
Snubber: A snubber is primarily used to attenuate or dampen rapid pressure spikes or surges that occur in fluid systems due to sudden changes in flow or pressure. It helps to smooth out these spikes and prevent them from causing damage to sensitive equipment or instruments.
Pulsation dampener: A pulsation dampener, as discussed in the previous response, is specifically designed to address pulsations or fluctuations in pressure that occur at a lower frequency, often associated with reciprocating pumps or compressors. It aims to provide a consistent and steady flow of fluid by absorbing and dampening these slower pulsations.
Mechanism:
Snubber: Snubbers typically use restrictive orifice passages, often with a small orifice size, to slow down the rate of pressure changes. This helps to attenuate rapid pressure fluctuations and reduce the impact of sudden surges.
Pulsation dampener: Pulsation dampeners use various mechanisms such as diaphragms, bladders, or pistons to absorb and store excess pressure during the high-pressure phase and release it during the low-pressure phase, effectively smoothing out the pulsations and providing a more consistent flow.
Frequency of operation:
Snubber: Snubbers are designed to handle high-frequency, short-duration pressure fluctuations, such as those caused by water hammers or sudden valve closures.
Pulsation dampener: Pulsation dampeners are effective at addressing lower-frequency pressure pulsations that occur over a longer period, typically associated with the operation of reciprocating pumps or compressors.
Application areas:
Snubber: Snubbers are commonly used in industries where rapid pressure changes need to be controlled, such as in hydraulic systems, steam pipelines, or gas distribution networks.
Pulsation dampener: Pulsation dampeners find applications in industries where maintaining a consistent flow is essential, such as oil and gas, chemical processing, and water treatment.
While both snubbers and pulsation dampeners contribute to stabilizing fluid systems, they target different types of pressure fluctuations and operate through distinct mechanisms. Snubbers focus on attenuating rapid pressure spikes, whereas pulsation dampeners are specialized in smoothing out lower-frequency pulsations, ensuring a consistent and reliable flow.
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Discharge Strainer Cross, Manifold Strainer Pulsation Dampener, Suction and Discharge Manifold