Pump booster is a machine that will increase fluid pressure. They can be used with liquids or gases, but the details of the construction will vary depending on the liquid. The gas booster is similar to a gas compressor, but it is generally a simpler mechanism that often has only one compression stage, and is used to increase the pressure of gas already above the ambient pressure. A two-stage amplifier is also created. Boosters can be used to increase gas pressure, transfer high pressure gas, fill gas cylinders and scavenge.
In new construction and retrofit projects, water pressure booster pumps are used to provide sufficient water pressure for the upper floors of high-rise buildings. The need for a water pressure booster pump may also arise after the installation of a reverse flow prevention (BFP) device, which is currently mandated in many cities to protect public water supplies from contaminants in a building entering public water supplies. The use of BFP begins after the Clean Water Act is passed. This device can cause a loss of 12 PSI, and may cause flushometers on the upper floors to not work properly. After the pipe operates for a long time, the scale can accumulate on the inner surface which will cause the pressure drop when the water flows.
Video Booster pump
Construction and function
The booster pump is usually a piston or plunger type compressor. Single-acting booster, one stage is the simplest configuration, and consists of a cylinder, designed to withstand operating pressure, with the piston being pushed back and forth inside the cylinder. The cylinder head is equipped with a supply and discharge port, where the hose and the supply and discharge pipes are connected, with a non-return valve on each, blocking the flow in one direction from supply to discharge. When the booster is off, and the piston is stationary, the gas will flow from the inlet hose, through the inlet valve to the space between the cylinder head and the piston. If the pressure in the outlet hose is lower, it will flow out and into anything connected with the outlet hose. This flow will stop when pressure is equalized, taking the valve opening pressure into account.
After the flow stops, the booster begins, and when the piston pulls along the cylinder, increasing the volume between the cylinder head and the piston crown, the pressure in the cylinder will drop, and the gas will flow in from the inlet port. On the return cycle, the piston moves toward the cylinder head, reduces the volume of space and compresses the gas until the pressure is sufficient to overcome the pressure in the outlet lane and the outlet valve opening pressure. At that point, the gas will flow out of the cylinder through the valve and the outlet port.
There will always be some compressed gas left in the cylinder head chamber and cylinder at the top of the stroke. The gas in this "dead space" will expand during the next stroke of induction, and only after dropping below the supply gas pressure, more supply gas will flow into the cylinder. The ratio of the volume of the cylindrical chamber with the piston fully drawn, to the dead space, is the "compression ratio" of the booster, also called the "boost ratio" in this context. The booster efficiency is related to the compression ratio, and the gas will only be transferred while the pressure ratio between the supply and the gas discharge is less than the boost ratio, and the shipping rate will decrease as an increase in the pressure-to-delivery ratio.
The transmission speed starts from near the sweep volume when there is no pressure difference, and goes down until there is no effective transfer when the pressure ratio reaches the maximum boost ratio.
Compression of the gas will cause an increase in temperature. The heat is mostly done by compressed gas, but the reinforcing component will also be heated by contact with hot gas. Some boosters are cooled by a water jacket or external fins to increase cooling of convection by ambient air, but smaller models may not have special cooling facilities at all. Cooling arrangements will improve efficiency, but will be more expensive to produce.
The booster to be used with oxygen must be made of an oxygen-compatible material, and use an oxygen-compatible lubricant to avoid fire.
Maps Booster pump
Resources
Boosters can be driven by electric motors, hydraulics, low or high pressure air or manually by the lever system. Those powered by compressed air are usually linear driven systems, in which the pneumatic cylinder directly drives the compression pistons, often in the general housing, separated by the seal. High pressure pneumatic drive settings can use the same pressure as the output pressure to drive the piston, and the low-pressure drive will use larger diameter pistons to multiply the applied force.
Manufacturer
High pressure gas reinforcement is manufactured by Haskel, Draeger and others. Crude and unsophisticated models (KN-3 and KN-4) were produced for the Soviet Armed Forces and surplus samples are now used by technical divers because they are relatively cheap and supplied with complete parts and equipment.
References
Source of the article : Wikipedia
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