SU6917A1 - Hydraulic rod pump for deep wells or boreholes - Google Patents

Description

FIG. 1 of the schematic drawing shows a longitudinal section of the proposed pump and FIG. 2 - the same, but with the opposite position of the pistons.

A cylinder 1 (Fig. 1) is placed at the top of the borehole, in which piston 2 moves up and down. The movement of the piston gets through tgu 3 from any machine: steam, electric, pneumatic, and so on. From the bottom of the cylinder 1 there is a pipe 4, which goes down into the well to the point where it is required to take the liquid to feed it up. At the end of the pipe 4, a hollow cylinder 5 is fastened, divided by a partition 8 into two parts (Fig. 1): in the upper part there is a piston b, which is under pressure of the coil spring 7 and is connected by a rod 9 with the throughput piston 10 located at the bottom of the cylinder 5 In the walls of which there are several rows of holes 14 for the passage of the injected fluid. The piston 10 has a valve 11 in the center, which opens as the piston moves up and closes during a return stroke. Further, at the bottom of cylinder 5, at some distance from the piston 10, the partition is fixedly fixed for 12 s; a valve 13 opening in reverse order to the valve 11. The lower end of the cylinder 5 is connected by a nozzle 17 to the discharge pipe 18.

For the pump to operate, the cylinder 1, the pipe 4 and the top of the cylinder 5 to the piston b are filled either with water through the inlet valve 15 (hydraulic rod) or with compressed air (pneumatic rod).

In the case of a hydraulic rod, the space under the piston 2 of the cylinder 1, the pipe 4 and the top of the cylinder 5 will be filled with water. Spring 7 holds the piston b in a certain position at the top of the cylinder. If using push 3, to give a push. On section 2, then this pressure will be transferred by water through pipe 4 to piston b, which will compress spring 7 and by rod 9 will lower piston 10 to a certain depth. Since the valve 11 is closed during this piston stroke, the fluid under the piston 10 will receive a push and pass through the valve 13 into the discharge pipe 17, 18. When the piston 2 returns upward, the pressure of the piston 2 on the fluid underneath will weaken, the spring 7 will push the piston b upwards, and with it the piston 10 will also be raised, the valve 11 will open and the valve 13 will be closed; then

The fluid being pumped through the 6-port 14 will pass under the piston 10. The next pressing of the piston 2 down again will resume the transfer of pressure to the pistons b and 10, with the result that the injection of fluid through the pipe 17/18 will resume. Repeating with a certain force and frequency of movement of the piston 2, it is possible to establish a continuous flow of fluid through the pipe 17 upwards and its withdrawal through the pipe 18 to the destination.

Modified pump device {FIG. 2) differs from the one just described by the reverse arrangement of all parts of the pump, with the pipe 4 of FIG. 1 in the pump of FIG. 2 plays the role of the discharge pipe, and the pipe 17, 18 plays the role of the pipe transmitting the pulses of the pump 1.

If instead of water or other liquid, cylinder 1 is filled (under the piston), pipe 4 and the top of cylinder 5 with compressed air and the piston 2 TB is actuated, the pump will operate in the same way as described above. The pump will work with a pneumatic rod.

If the top of cylinder 5 and part of pipe 4 are filled with water, and the rest of pipe 4 and cylinder 1 are filled with compressed air, the pump will work with a hydro-pneumatic rod.

The subject of the patent.

A hydraulic rod pump for deep wells or boreholes, characterized by the use of a hollow cylinder 5 immersed in the fluid to be lifted and connected to the hydraulic rod 4 containing

liquid or air, or partly liquid and part air, which cylinder 5 encloses a spring piston 6 connected by a rod 9 with a flow piston 10, on top of which (Fig. 1), or when the pistons are reversed (Fig. 2), in the walls below the cylinder, there are holes 14, designed, in the non-working state of the above rod, to pass the pumped fluid into the cylinder 5 and through the valve 11 under the piston 10 (Fig. 1) or on top of it (Fig. 2), as the piston moves b the working medium supplied by the pipe 4 is ejected by the piston 10 into the load etatelnuyu pipe 17, 18.

FIG. 2