CN218995361U

CN218995361U - Flow stabilizing device for pumping test

Info

Publication number: CN218995361U
Application number: CN202223175776.6U
Authority: CN
Inventors: 龙根元; 覃茂刚; 李海云; 邓思迪
Original assignee: Marine Geological Survey Institute Of Hainan Province
Current assignee: Marine Geological Survey Institute Of Hainan Province
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-05-09
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a flow stabilizing device for a water pumping test, which comprises an electric controller and a flow stabilizing mechanism, wherein the flow stabilizing mechanism comprises a water storage pressure stabilizing tube, a water return tube is arranged in the water storage pressure stabilizing tube, the input end of the water return tube is positioned at the upper part in the water storage pressure stabilizing tube, the output end of the water return tube penetrates through the bottom part of the water storage pressure stabilizing tube and is positioned in a water pumping well pipe, a water inlet tube is arranged at the left side of the lower part of the water storage pressure stabilizing tube and is connected with a water pump, a water outlet tube is arranged at the right side of the lower part of the water storage pressure stabilizing tube, and a flowmeter and a flow regulating valve are arranged on the water outlet tube. The utility model has simple structure and low manufacturing cost, adopts the four-way water storage pressure stabilizing tube structure, and keeps the water level in the water storage pressure stabilizing tube stable through the cooperation of the water storage pressure stabilizing tube and the water return tube, so that the pressure of the water outlet tube arranged at the lower part of the water storage pressure stabilizing tube is stable, and the water outlet quantity of the water outlet tube can achieve the effect of stabilizing the flow under the action of the control valve, and has the characteristics of convenient operation, high stability and the like.

Description

Flow stabilizing device for pumping test

Technical Field

The utility model belongs to the technical field of hydrogeological survey equipment, relates to a flow stabilizing device, and particularly relates to a pumping test flow stabilizing device.

Background

Pumping tests are the most common means of acquiring hydrogeologic parameters, knowing the hydrogeologic conditions in hydrogeologic surveys, and include steady flow pumping tests and unsteady flow pumping tests. The steady flow pumping test is a pumping test with a certain duration under the condition of keeping pumping flow and water level falling depth relatively stable in the pumping process, and generally requires three water level falling depths; the non-steady flow pumping test refers to a pumping test for observing the change of the ground water level with time under the condition of keeping the pumping flow steady or observing the change of the pumping flow with time under the condition of keeping the water level drop depth fixed in the pumping process.

At present, conventional measures for stabilizing the pumping flow of a pumping test generally control the pumping flow by adjusting the frequency of a power supply or after a water return valve is additionally arranged on a water outlet pipe of the water pump, part of water is returned into a pumping well by manually operating the water return valve, so that the pumping flow of the pumping test is kept stable, but the pumping test needs to last for more than ten hours or even more days once because the duration of the pumping test is longer, the working state of the water pump is unstable due to the influence of objective factors in the process of the pumping test, thereby influencing the pumping flow, causing serious negligence to the pumping test, and causing adverse influence to the pumping test, but part of water can flow into the pumping well through manually operating the water return valve, but the water level in the well is reduced and the water lift is changed, the stability of the pumping flow cannot be influenced in time by manually operating the water return valve, the adverse influence is brought to the result of the pumping test, and the accuracy of hydrogeology log calculation is reduced, so that a device capable of stabilizing the pumping test flow is needed to solve the problems.

Disclosure of Invention

The utility model provides a flow stabilizing device for a water pumping test, which aims at the defects of the prior art, adopts a four-way water storage stabilizing tube structure, and is characterized in that a water outlet of a water pump is connected with the water storage stabilizing tube, a water return tube is arranged in the water storage stabilizing tube, and in the water pumping test process, the water return tube automatically returns the water flow higher than the upper end of the water return tube in the water storage stabilizing tube into a water pumping well so as to keep the water level in the water storage stabilizing tube stable, so that the pressure of a water outlet tube arranged at the lower part of the water storage stabilizing tube is stable, and the water yield of the water outlet tube can reach the effect of stabilizing the flow under the action of a control valve.

The utility model adopts the technical scheme that:

the utility model provides a test flow stabilising arrangement draws water into the water storage steady tube through the delivery port of the suction pump that control circuit controlled, can draw water in the test well through the inlet tube in, and make water level in the water storage steady tube always slightly higher than the return pipe input, when the water level in the water storage steady tube is higher than the input of return pipe, the water that is higher than the input always flows back into the well casing by the return pipe, thereby keep the stability of water level height in the water storage steady tube, reach the effect that makes the pressure stable in the water storage steady tube, set up the outlet pipe on the lower part right side of water storage steady tube, be provided with the flowmeter and flow control valve on the outlet pipe, under the effect of water storage steady tube, the outlet pipe output pressure of input then keeps the water to be stable through the outlet pipe, can keep the flow to the flow control valve stable through the flow, the flow can be measured to the output flow of water of the water of stable volume of measuring the water of the water storage steady tube, the flow control valve is required to be adjusted to be big, the flow is stable.

Furthermore, the water collecting pipe head is arranged at the input end of the water return pipe and is designed into a funnel shape, so that the water return pipe is convenient to return water.

Furthermore, a sealing ring is arranged at the joint of the bottom of the water return pipe and the bottom of the water storage pressure stabilizing pipe, so that the tightness of the water return pipe and the water storage pressure stabilizing pipe is improved.

Before a water pumping test, the water pumping flow stabilizing device is arranged on a water pumping test well, the electric controller is started, the water pumping pump is controlled to work by the electric controller, water in the water pumping test well is pumped into the water storage stabilizing tube through the water inlet tube, the water level in the water storage stabilizing tube is always slightly higher than the input end of the water return tube, when the water level in the water storage stabilizing tube is higher than the position of the water collecting tube head, the water which is higher than the water level in the water storage stabilizing tube rapidly flows into the water return tube through the water collecting tube head, and flows into the water pumping test well through the water return tube, so that the water level of the water storage stabilizing tube is kept stable, the purpose of stabilizing the pressure in the water storage stabilizing tube is achieved, the water outlet pressure at the input end of the water outlet tube is kept stable under the action of stabilizing the pressure in the water storage stabilizing tube, then the water outlet flow of the water outlet tube can be regulated through the flow regulating valve according to requirements, the water outlet flow can be kept stable, and the water outlet flow can be measured through the flowmeter.

The utility model has simple structure and low manufacturing cost, adopts a four-way water storage pressure stabilizing tube structure, is connected with the water storage pressure stabilizing tube through the water outlet tube of the water pump, and is internally provided with the water return tube, and the water return tube automatically returns the water flow higher than the upper end of the water return tube into the water pumping well in the water pumping test process so as to keep the water level in the water storage pressure stabilizing tube stable, thereby stabilizing the pressure of the water outlet tube arranged at the lower part of the water storage pressure stabilizing tube, and further enabling the water yield of the water outlet tube to achieve the effect of stabilizing the flow under the action of the control valve. Has the characteristics of convenient operation, high stability and the like.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

FIG. 2 is an enlarged view of the flow A portion of the present utility model.

Fig. 3 is a longitudinal cross-sectional view of the present utility model.

In the figure: 1. an electric control box; 2. a water inlet pipe; 3. a water return pipe; 4. a water pump; 5. a water storage pressure stabilizing tube; 6. a water collecting pipe head; 7. a water return pipe; 8. a flow regulating valve; 9. a water outlet pipe; 10. a flow meter.

Detailed Description

The utility model will now be further illustrated by way of example, but not by way of limitation, with reference to the accompanying drawings.

In the structures shown in fig. 1, 2 and 3, the pumping test flow stabilizing device provided by the utility model comprises an electric controller 1 and a flow stabilizing mechanism, wherein the flow stabilizing mechanism comprises a water storage stabilizing tube 5, the water storage stabilizing tube 5 is designed into a four-way structure, a water return tube 7 is arranged in the water storage stabilizing tube 5, the input end of the water return tube 7 is positioned at the upper part in the water storage stabilizing tube 5, a water collecting tube head 6 is arranged at the input end of the water return tube 3 and is designed into a funnel shape, the output end of the water return tube 7 penetrates through the bottom of the water storage stabilizing tube 5 and is positioned in a pumping well tube, a sealing ring is arranged at the joint of the water return tube 3 and the bottom of the water storage stabilizing tube 5, a water inlet tube 2 is arranged at the left side of the lower part of the water storage stabilizing tube 5, the water inlet tube 2 is connected with a water outlet of a water pump 4 controlled by a control circuit, a water outlet tube 9 is arranged at the right side of the lower part of the water storage stabilizing tube 5, and a flowmeter 10 and a flow regulating valve 8 are arranged on the water outlet tube 9.

The water pumping flow stabilizing device is arranged on a water pumping test well, the electric controller is opened, the water pumping pump is controlled to work through the electric controller, water in a well hole is pumped into the water storage stabilizing tube through the water inlet pipe, the water level in the water storage stabilizing tube is always slightly higher than the water return pipe input end, water higher than the water collecting tube head in the water storage stabilizing tube flows into the water return pipe from the water collecting tube head quickly, and flows into the water pumping test well through the water return pipe, so that the water level of the water storage stabilizing tube is kept stable, the purpose of stabilizing the pressure in the water storage stabilizing tube is achieved, the water outlet pressure at the water outlet pipe input end is kept stable under the action of stabilizing the pressure in the water storage stabilizing tube, then the water outlet flow of the water outlet pipe can be regulated through the flow regulating valve according to requirements, the water outlet flow is kept stable, and the water outlet flow can be measured through the flowmeter.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims

1. The utility model provides a test flow stabilising arrangement draws water which characterized in that: including automatically controlled ware and flow stabilization mechanism, flow stabilization mechanism includes the water storage steady voltage pipe, and the water storage steady voltage pipe designs to four-way structure, sets up the wet return in the inside of water storage steady voltage pipe, and the wet return input is located the upper portion position in the water storage steady voltage pipe, and the wet return output runs through water storage steady voltage pipe bottom and is located the well pipe that draws water, sets up the inlet tube in water storage steady voltage pipe lower part left side, and the inlet tube is connected with the delivery port of the suction pump by control circuit control, sets up the outlet pipe in water storage steady voltage pipe's lower part right side, is provided with flowmeter and flow control valve on the outlet pipe.

2. The pumping test flow stabilization device of claim 1, wherein: the water collecting pipe head is arranged at the output end of the water return pipe and is designed into a funnel shape.

3. The pumping test flow stabilization device of claim 1, wherein: and a sealing ring is arranged at the joint of the bottom of the water return pipe and the bottom of the water storage pressure stabilizing pipe.