Direct combustion type plunger hydraulic pump

Abstract

A direct-fired plunger hydraulic pump, comprising a combustor ( 1 ), a high-temperature heat exchanger ( 2 ), a steam chamber ( 3 ), at least one cylinder plunger mechanism ( 10 ), a steam refrigerator ( 15 ) and a control system, wherein the high-temperature heat exchanger ( 2 ) is connected with the combustor ( 1 ) through a pipe; the steam chamber ( 3 ) is a sealed container, in which a water nozzle ( 4 ) is arranged above the high-temperature heat exchanger ( 2 ); the cylinder plunger mechanism ( 10 ) is mounted above the steam chamber ( 3 ) and mainly consists of a cylinder ( 20 ) and a plunger ( 21 ); a piston of the cylinder ( 20 ) is connected with a piston of the plunger ( 21 ) through a mandril ( 30 ) with a reset mechanism; an inlet valve ( 22 ) communicated with the steam chamber ( 3 ) is provided at the bottom end of the cylinder ( 20 ), and an exhaust valve ( 23 ) is provided on a side wall of the cylinder ( 20 ); an oil outlet and an oil inlet are provided at the top end of the plunger ( 21 ); the exhaust valve ( 23 ) is connected with the steam refrigerator ( 15 ) through an exhaust pipe ( 14 ); and the refrigerator ( 15 ) is connected with a water tank ( 8 ). The direct-fired plunger hydraulic pump has the advantages of simple structure, energy conservation and high efficiency, and most of the thermal energy generated by fuel provides hydraulic machines with power by heat exchange so that the energy consumption is small.

1 . A direct-fired plunger hydraulic pump, comprising a combustor, a high-temperature heat exchanger, a steam chamber, at least one cylinder plunger mechanism, a steam refrigerator and a control system, wherein the high-temperature heat exchanger is connected with the combustor through a pipe and is provided in the steam chamber; the steam chamber is a sealed container, in which a water nozzle is arranged above the high-temperature heat exchanger and is connected with a water supply valve, a water pump and a water tank through a water pipe; the cylinder plunger mechanism is mounted above the steam chamber and mainly consists of a cylinder and a plunger; a piston of the cylinder is connected with a piston of the plunger through a mandril with a reset mechanism; an inlet valve communicated with the steam chamber is provided at the bottom end of the cylinder, and an exhaust valve is provided on a side wall of the cylinder; an oil outlet connected with a high-pressure oil pipe and an oil inlet connected with an oil tank are provided at the top end of the plunger; the oil inlet and the oil outlet is provided with a check valve ( 26 ) respectively; the exhaust valve is connected with the steam refrigerator through an exhaust pipe; and the condensate water drain pipe of the steam refrigerator is connected with the water tank. 
     
     
         2 . The direct-fired plunger hydraulic pump according to  claim 1 , wherein the reset mechanism on the mandril is a spring which is sleeved on the mandril and is provided above the piston of the cylinder. 
     
     
         3 . The direct-fired plunger hydraulic pump according to  claim 1 , wherein the reset mechanism on the mandril is a rocker arm structure, which consists of a rocker arm base, a rocker arm and a connecting rod; the middle part of the rocker arm is movably connected with the rocker arm base; the two ends of the rocker arm are connected with the mandrils of two cylinder plunger mechanisms through the connecting rod respectively; and the connecting rod is hinged with both the rocker arm and the mandril. 
     
     
         4 . The direct-fired plunger hydraulic pump according to  claim 1 , wherein the steam refrigerator is provided with a circulating cold water pipe connected with a hydraulic oil water cooler and/or an air conditioner. 
     
     
         5 . The direct-fired plunger hydraulic pump according to  claim 1 , wherein the water pipe connected with the water tank and the water nozzle is connected with a low-temperature heat exchanger, the low-temperature heat exchanger is connected with the high-temperature heat exchanger through a pipe. 
     
     
         6 . The direct-fired plunger hydraulic pump according to  claim 1 , wherein at least one safety valve communicated with the exhaust pipe is provided on the steam chamber. 
     
     
         7 . The direct-fired plunger hydraulic pump according to  claim 1 , wherein the control system comprises a microprocessor, a travel sensor mounted on the mandril, a temperature sensor mounted on the high-temperature heat exchanger, a pressure sensor mounted in the steam chamber, a combustor controller arranged on the combustor, a water supply valve, an inlet valve and an exhaust valve; the signal input end of the microprocessor is connected with the travel sensor, the temperature sensor and the pressure sensor in parallel, and signal output end of the microprocessor is connected with the combustor controller, the water supply valve, the inlet valve and exhaust valve in parallel.