RU2293222C1 - Well air-operated pump - Google Patents

Abstract

FIELD: pumping of fluid by direct contact of another fluid.

SUBSTANCE: pump comprises displacement chamber with sucking and pressure branch pipes having check valves, gas duct that is connected with the chamber and source of compressed gas, and ejector with active nozzle. The pressure branch pipe is connected with the pipeline provided with a check valve. The branch pipe is mounted in the displacement chamber that is provided with the nozzle for permitting it to be changeable for a plug. The gas duct is connected with the system for supplying and distributing compressed gas. The air distributor is provided with the ejector and stop valves provided with the quick-operating drivers. The drives of the stop valves of the pump is controlled by the electronic unit with programmable microcontroller and operator desk that are connected with the board circuit of the vehicle.

EFFECT: enhanced efficiency.

2 cl, 2 dwg

Description

The invention relates to pumps for pumping liquids by direct exposure to a compressed or rarefied medium, in particular to submersible borehole pumping units.

Advantageously, the invention can be used in industry both for removing liquids from great depths, for example from wells, and for recovering silted wells.

In addition, the device can be used for sampling groundwater from control wells located in the field and located around the perimeter of underground oil storage facilities or landfills, in particular radioactive.

A well-known pneumatic pump is known from the prior art, comprising a substitution chamber with inlet and discharge nozzles equipped with check valves, and a gas pipeline communicating with a source of compressed gas and with an active nozzle (see USSR author's certificate No. 1622641, class F 04 F 1 / 02, 1987). The well pump described above was adopted by the applicant as a prototype.

The reasons that impede the achievement of the technical result indicated below when using a well-known pump adopted as a prototype include the fact that the pump is designed only to remove fluid from the wells, and when silting them, restoration of the wells is carried out using other devices, for example flushing, which in case of selection representative wells from the well distorts their reliability.

In addition, the known device is designed in such a way that its use leads to an increased consumption of compressed gas, since it requires constant supply to the ejector, which is problematic in the field when compressed gas cylinders are used as a pressure source.

The purpose of the invention is to increase the productivity of a borehole pneumatic pump in the field by expanding its functionality and reducing the consumption of compressed gas.

The technical result is the combination of several functions in one device, which allows in the field using the same equipment (the proposed borehole pneumatic pump) to remove both groundwater from the wells and restore them from siltation without the use of additional flushing water, thereby simultaneously one technical result is an increase in the reliability of the analysis of representative samples taken.

The specified technical result in the implementation of the claimed invention is achieved by the fact that in the well-known downhole pneumatic pump, including a replacement chamber with inlet and discharge nozzles, each of which is equipped with a check valve, as well as a gas pipe in communication with the replacement chamber and a source of compressed gas, and an ejector with an active the nozzle feature is that the discharge pipe is connected to the discharge pipe with a shut-off valve, and the pipe itself is located directly inside amers substitution, which further removable nozzle mounted replaceably on the last plug, and the pipeline is connected to the supply and distribution system and a pressurized gas as well as a delivery conduit made of separate parts assembled together by means of quick connections.

In addition, the peculiarity of the pump in the particular case is that the compressed gas supply and distribution system is equipped with shut-off valves with quick-acting actuators, and for controlling shut-off valve drives, the pump contains an electronic unit with a programmable microcontroller and an operator panel that are connected to the vehicle's on-board network.

The installation of the injection pipeline with a shut-off valve on the discharge pipe located inside the replacement chamber, on which the removable nozzle is installed, allowed to wash the sludge and restore the wells without the use of additional flushing water, thereby increasing the reliability of the analysis of representative samples taken and using only one in the field type of equipment. The manufacture of a gas pipeline and an injection pipeline from separate parts, fastened together by means of quick-detachable joints, made it possible to change their lengths depending on the depth of the well and reduce the consumption of compressed air.

The installation of shut-off valves with high-speed actuators in the compressed gas supply and distribution system allows not only alternately supplying a vacuum to the substitution chamber from the ejector and pressure from the compressed gas source, but also supplying compressed gas to the active nozzle of the ejector periodically.

So, the compressed gas is not supplied to the active nozzle of the ejector when the compressed gas is supplied to the substitution chamber when water is displaced from it, and also when the water level in the well is sufficient to fill the substitution chamber under the influence of hydrostatic pressure of a water column in the well. This reduces the consumption of compressed gas, thereby increasing the efficiency of the pump.

Providing the pump with an electronic control unit with a programmable microcontroller and an operator panel connected to the on-board network of the car allows you to change the duration of the supply to the replacement chamber of rarefaction and compressed gas over a wide range and apply the proposed pump in wells of various depths, which significantly expands the pump's functionality.

Information confirming the possibility of carrying out the invention with obtaining the above technical result are as follows.

Figure 1 presents the pneumatic pump, figure 2 is a diagram of the system of supply and distribution of compressed gas.

The proposed downhole pneumatic pump includes a replacement chamber 1, which contains an inlet 2 and a discharge 3 nozzles equipped with check valves 4 and 5, respectively. A grill 6 is connected to the inlet pipe 2, and a discharge pipe 7 is connected to the discharge pipe 3, at the top of which a shut-off valve is mounted 8. A removable nozzle 9 (option A) is installed on the bottom of the replacement chamber 1, instead of which a plug 10 can be installed (option B ) The replacement chamber 1 is connected through a gas pipeline 11 to the compressed gas supply and distribution system 12. The gas pipeline 11 and the discharge pipe 7 are made of flexible tubes, which are connected at regular intervals by quick disconnect connections 13, which allows the optimal length of the gas pipeline 11 and the discharge pipe 7 to be set to depending on the depth of the well. The replacement chamber 1 is equipped with a cable 14, wound on the winch drum 15 together with a flexible gas line 11 and a discharge pipe 7. The gas pipe 11 is connected to a compressed gas supply and distribution system 12, which communicates with a compressed gas source 16 and an ejector 17, by means of a quick connector 13. System the supply and distribution of compressed gas 12 contains three shut-off valves with high-speed actuators 18, 19 and 20 installed on the pipeline 21 for supplying compressed gas from the source 16 to the gas pipeline 11, the pipeline 22 for supplying rarefaction in ha the line 11 from the ejector 17 and the pipeline 23 for supplying compressed gas from a source of compressed gas 16 to the active nozzle of the ejector 17, respectively. The operation of high-speed actuators of shut-off valves 19, 20 and 21 is controlled automatically by an electronic control unit 24 containing a programmable microcontroller and an operator panel.

The operation of the pump is as follows.

Depending on what operation is planned to be carried out in the well, either a removable nozzle 9 is installed on the replacement chamber 1, if the well is restored from siltation, or a plug 10 is used if groundwater is removed from it. The replacement chamber 1 is lowered into the well using a winch 14, on the drum of which a cable 13, injection pipe 7 and gas pipeline 11 are wound. After immersion of the replacement chamber 1 into the well to the required depth, from gas pipeline 11 and injection pipe 7 wound on the drum of winch 14, their parts are separated from the nearest quick couplers 15 and connected to the compressed gas supply and distribution system 12 and the shut-off valve 8, respectively. On the operator panel of the electronic control unit 24 connected to the vehicle's on-board network, the duration of the cycles of filling the replacement chamber 1 with water and its displacement from the chamber 1 are set. When groundwater is pumped out of the well and the pump is put into operation by the electronic control unit 24, the shut-off valves 19 and 20. In this case, compressed gas is supplied to the active nozzle of the ejector 17, and vacuum is supplied to the substitution chamber 1 from the ejector 17 through the gas pipeline 11. The replacement chamber 1 through the check valve 4 is filled with water for a predetermined time, after which the shut-off valves 19 and 20 are closed, and the shut-off valve 18 is opened. Compressed gas is supplied to the replacement chamber 1 from the compressed gas source 16 through the gas line 11 and water is displaced through the return valve 5 into the discharge pipe 7 and then to the surface through an open shut-off valve 8.

When restoring silted wells in the chamber 1, instead of the plug 10, a removable nozzle 9 is installed, the shut-off valve 8 is closed. In this case, water from the substitution chamber 1 is displaced by the compressed gas back into the well, eroding sludge deposits. In order to pump out the suspension formed during the erosion of sludge in the well, a shut-off valve 8 is periodically opened, upon opening of which water from the substitution chamber 1 is forced out simultaneously to the nozzle 9 and to the discharge pipe 7.

Thus, the above information indicates the fulfillment of the following set of conditions when using the claimed invention:

- a tool embodying the claimed device in its implementation, is intended for use in industry, namely in the chemical industry, exploration, in the petrochemical industry;

- for the claimed method in the form described in the independent clause of the claims, the possibility of its implementation using the means and methods described in the application is confirmed;

- the claimed invention, when implemented, is capable of achieving the achievement of the technical result perceived by the applicant, namely, combining several functions in one device, which allows in the field to use the same equipment to remove groundwater from wells and restore them from siltation without using additional washing water, thereby providing along the way another technical result - increasing the degree of reliability of the analysis of representative samples taken.

Claims (3)

1. A downhole pneumatic pump containing a replacement chamber with inlet and discharge nozzles, each of which is equipped with a check valve, as well as a gas pipe in communication with the replacement chamber and a source of compressed gas, and an ejector with an active nozzle, characterized in that the discharge pipe is connected to the discharge nozzle a pipeline with a shut-off valve, and the pipe itself is placed directly inside the replacement chamber, on which a removable nozzle is additionally mounted with the possibility of replacing the latter with a plug, and ha oprovod connected to the supply and distribution system of compressed gas and also as a delivery conduit made of separate parts assembled together by means of quick connections. 2. The pump according to claim 1, characterized in that the compressed gas supply and distribution systems are equipped with shut-off valves with high-speed actuators. 3. The pump according to claim 1, characterized in that it is equipped with an electronic unit containing a programmable microcontroller and an operator panel that are connected to the on-board network of the vehicle.

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