SU912055A3 - Pump - Google Patents

Description

(PUMP

The invention relates to hydraulic engineering, in particular to pumps with varying volume of operation. whose camera can be used in the operation of wells or deep 5 wells.

A known pump comprising a variable-volume working chamber connected by means of variable-shutoff valves of the Current environment with a suction flow line and an injection line, the working chamber consisting of an 8-shaped sleeve and made of an elastic material of a pump element subjected to alternating | 5 axial elongation to achieve the effect of suction SP.

The disadvantage of the known pump co is that the large number of loading cycles of the pump element made of elastic material by alternating it axially lengthening the fatigue failures of the pump element and that

Mym reduces the reliability of the pump as a whole;

The purpose of the invention is to increase the functionality and reliability of the pump.

This goal is achieved by the fact that the pumping element is reinforced with a helical screw in opposite directions with a reinforcing wire with a lifting angle in the range of 35.2-60.

FIG. 1 shows a schematic representation of a pump in a quiescent position, a slit; in fig. 2 - the same in the working position.

Claims (1)

The pump consists of a tubular casing 1, provided in its lower part 2 of the version with apertures 3 in the form of slots for the entrance of the pumped medium. The upper part k of the tubular body 1 is provided with an open annular chamber 5 with a central axial guide 6, in which a driving rod 7 is placed, which is simultaneously a transport pipeline for the pumped medium. The rod 7 is connected with the pump element 8 by means of a storage element 39 of the element 9, as well as with the suction pipe 10 located in the lower part 2 of the housing 1, while the pump element 8 is made in the form of a sleeve 11 of elastic material and serves as a working chamber of the pump having a variable the volume, and the suction pipe 10 is provided with slots 12 and is rigidly connected to the tubular body 1 by means of the fastening element 13. The pumping element 8, made 6 in the form of a sleeve 11 from an elastic material, is strengthened by a screw-shaped one passing in opposite directions H with a lifting wire with a lifting angle in the range, and the reinforcing wire 1 is located directly in the material of the pump element B. At the same time, the elastic material must have a relatively high bending strength and relatively small elongation and spring properties, so that the density of the spiral reinforcement, carried out in opposite directions, would not reduce the high elastic properties of the material of the pump element. It is from these considerations that the angle of elevation of the helical reinforcing wire 1A ki is chosen in the range 35.2-60 Accumulation element 9 is disposed between the pump 8 and the element 7 and the actuating rod is designed as a sleeve 15 of elastic material, i.e., in the same way as the pump element 8, but at the accumulating element 9 the screw-like reinforcing cap 16 is located with a relatively small rise, i.e. the elevation is lower. The upper part 17 of the accumulative element 9 is connected to the driving rod 7 by a connecting piece 18. At the lower end 19 of the accumulating element 9, a single piece 20 is attached to the upper end of the pump element 8 and is connected to it. The pump element 8, which is a working chamber of variable volume, is hydraulically connected by means of valves for variable shut-off of the flowing medium, made in the form of a suction 21 and a discharge 22 one-way valves, respectively, with a suction line 23 and a pressure line 2k. The pump works as follows. As the drive rod 7 moves upward, the pump element 8 in the form of a sleeve 11 made of elastic material with a helical reinforcing wire 1 undergoes a diametric reduction, which is expressed more in relation to its volume than to axial elongation, thereby achieving a volume reduction of the pump element. Due to 3tOMy, the displaced volume of fluid passes through the opening discharge valve 22 to the discharge line 2C and further to the surface. Suction valve 21 is closed. During the reverse movement of the drive rod 7, the volume of the pump element 8 increases again and the line for sucking in liquid is sucked through the suction valve 21 from the suction line 23. The discharge valve 22 is closed. Thus, the pump element 8 operates intermittently, i.e. with variable suction and fluid injection. Due to the location of the storage element 9 between the pump element 8 and the drive rod 7, a uniform flow of fluid in the transport line (not shown) during pumping can be achieved most easily. This effect is achieved due to the special reinforcement of the storage element 9, i.e. due to the smaller angle of elevation of its reinforcing wires 16 compared to the reinforcing wires 1k of the pump element 8, and the elongation of the storage element 9 when the drive rod 7 moves upwardly leads to an increase in the volume of the storage element 9. Thus, the length of the storage element 9 can be selected relative to the pump element 8, that as the drive rod moves upwards, about half of the volume of medium delivered by the pump element 8 accumulates in the storage element 9, while uga issued half volume transmitted through the transport conduit. The amount of fluid accumulated in the accumulation element 9 is then pumped out during the reverse movement of the drive rod 7. When using the accumulation element 9, a uniform flow of the liquid can also be ensured in relation to its inflow, since the external volumes of both elements of both the storage 9f and pump 8 change in the same way. This prevents the possibility of collapses or blockages in the well or deep well. Changing the pump suction and discharge strokes for the reverse can be achieved by changing the elevation angles of the helical arrays of the 11Xcih wires 14 and 1b of the corresponding pumping 8 and accumulative 9 elements for the reverse. A pump comprising a variable-volume working chamber connected by means of variable valves for variable medium with an overlap current suction line and a discharge line, the working chamber consisting of a sleeve made of elastic material of a pump element subjected to alternating axial elongation to achieve suction effect, characterized by what it is, in order to increase its functionality and reliability, the pump element is hardened by a screw-like x opposite direction with wire reinforcing helix angle in the range 35 ,. Sources of information taken into account in the examination 1. Aator evidence of the USSR And SltOOT, cl. F 04 B 47/00, 1970. e FIG: