What is the name of the type of boiler feed injector that is mounted to th cross heads?
Devon Sinsley said:
What is the name of the type of boiler feed injector that is mounted to th cross heads?
Devon,
I’m an “old” steam guy, but I have never heard of an injector actuated by the movement of an object on a crosshead. The principle of how an injector works is that a venturi action occurs across a port inside of the injector and then that causes COLD water to be forced into a pressurized boiler through a check valve. An injector does NOT depend on moving parts to work.
You MIGHT be thinking of a crosshead water pump which draws water from a water source like a tender tank and then pumps that water by the reciprocating action of the crosshead connected to a piston and piston rod. Crosshead pumps were used on early steam engines (at least railroad steam engines) on locomotives like the early Americans. They didn’t have the capacity to provide a lot of water for the larger boilers that would evolve later.
Ah, a book I have has pages available online at Google Books, pages 125 and 126 of,
A History of the American Locomotive: Its Development, 1830-1880By John H. White
I think referring to crosshead water pump. Yes they were used on some early locomotives. See the link below. Problem was no movement, no water.
There were also a few axle driven pumps not dissimilar to our small scale axle pumps.
Gary Armitstead said:
Devon Sinsley said:
What is the name of the type of boiler feed injector that is mounted to th cross heads?
Devon,
I’m an “old” steam guy, but I have never heard of an injector actuated by the movement of an object on a crosshead. The principle of how an injector works is that a venturi action occurs across a port inside of the injector and then that causes COLD water to be forced into a pressurized boiler through a check valve. An injector does NOT depend on moving parts to work.
You MIGHT be thinking of a crosshead water pump which draws water from a water source like a tender tank and then pumps that water by the reciprocating action of the crosshead connected to a piston and piston rod. Crosshead pumps were used on early steam engines (at least railroad steam engines) on locomotives like the early Americans. They didn’t have the capacity to provide a lot of water for the larger boilers that would evolve later.
Gary that is exactly what I was referring to and likely why I could not find it in a google search because I was calling it an injector and not a pump. But that IS what I was referring to, so thank you.