ANSI HI-9.1-2000 pdf download Pumps – general guidelines
9.0 Scope This Standard applies to all industrialcommercial pumps, including centrifugal, vertical, rotary and reciprocating types. It includes: types; definitions; design and application; airborne sound measurement and decontamination.
9.1 Types of pumps Industrialcommerical pumps are used in an infinite variety of applications, and many different configurations of design are used to satisty these requirements. The different designs can be typitied diagrammatically, as shown in Figure 9.1 on the following page. The first distinction is the manner in which the machine adds energy and moves the liquid.
9.1.1 Positive displacement pumps Positive displacement pumps add energy by trapping liquid in a confined space and forcibly moving it out of e pump and into the discharge pipe. This pumping tion is done by one of three methods:
1) Reciprocating action of plungers, pistons, bel- lows or diaphrams;
2) Rotary action of mechanical devices such as gears, screws, vanes, etc.;
3) Blow case arrangements using pressurized air to displace liquid.
9.1.2 Kinetic pumps Kinetic pumps add energy by high-speed rotating wheels or impellers and fall into the following catego- ries:
一Centrifugal, both horizontal and vertical turbine types;
一Regenerative turbine;
一Rotating casing with pitot tube. Each of the above pump types are described further in one of the sections of this series of standards as follows: