Reciprocating pumps are from a family of positive-displacement pumps. Reciprocating pumps operates on the principle of displacing the liquid by a plungers which move in reciprocating action inside its fluid end which has set of suction and discharge non return valves. The pump has a power end where the rotary action is converted into reciprocating action.
The reciprocating pumps are used in applications where higher head is required. Most of the applications have fixed volume with variable discharge head however some types of pumps are designed to have variable flow rates as well. These pumps are mainly divided in to two categories i.e direct driven or power driven. The direct driven pumps are driven by gas pressure whereas power driven pumps are driven by external power motors (electric or gas). We at Goma mainly deal with power driven pumps.
The working principle of reciprocating pump is same as IC engine. Only the difference in between is combustion not take place in reciprocating pump. In reciprocating pump plunger or piston travels back & forth in the cylinder called chamber. Suction stroke or back stroke creates vacuum in the cylinder and helps intake of liquid & discharge stroke or forward stroke compresses the liquid in cylinder & then discharges to the application point. Non return valves are placed in suction & discharge ports to ensure that flow is flowing in one direction. In reciprocating pump flow is pulsating. More the number of plungers / pistons in a pump, smoother is the flow. To reduce the pulsations in the discharge line there are dampener at each suction & discharge. These are designed to minimize the pulsations in the flow of liquid. Depending on the duty cycle, application and liquid to be pumped various combination of material of construction especially for fluid end can be selected.
a) Power End: Consist of Crank case which also acts an oil sump for various parts which it houses like crank shaft, connecting rod, bearings, cross head etc. Power source gives rotary motion to crank. Connecting rod translates this rotary motion to reciprocating motion and transfers power to cross head.
b) Stuffing box assembly: The cross head transmits this power to plungers / piston which are housed in the stuffing box / liners having tight sealing arrangement.
c) Fluid End: Also known as chamber which comes in contact with the liquid houses suction and delivery valves at the suction end and delivery end respectively. These valves are non-return values helping the liquid to flow from suction to discharge in one direction only.
d) Suction and Delivery Manifold: These are pathways of the liquid to suction side and discharge side of the chamber respectively designed appropriately to the flow and pressure ratings.
GOMA Engineering Pvt. Ltd. are one of the leading OEM’s of reciprocating pump since more than 35 years. GOMA manufactures reciprocating pump as per Hydraulic Institute standard and also API 674 (American Petroleum Institute). Due to nature of operation of reciprocating pump there are a lot of wear & tears in the pump as the parts are in motion to and fro almost 200 to 1000 times a minute. But with research and innovation, GOMA has come up with designs which require less frequent replacement. With wide range of pumps models catering to innumerable applications in the past 35 years, GOMA has dealt with major on field challenges and given solutions for the clients.
GOMA Engineering has been dealing in reciprocating pumps successfully with a good growth rate in Indian market and also is making its mark on the overseas markets as well.
GOMA has all the necessary approvals from EIL, ONGC, PDIL, L&T, BHEL, etc and also got pumps thoroughly tested by various TPI agencies like Lloyd’s, BVQI, DNV, TUV, SGS, CEIL etc.