Tube well dewatering vacuum degree automatic control device

Abstract

The utility model relates to the technical field of dewatering well vacuum water pumping, and discloses a tube well dewatering vacuum degree automatic control device which comprises a guide rail, a suspension reflector, a distance sensor, a well cap, a water pumping mechanism and a vacuumizing mechanism. The vacuumizing mechanism is arranged on the ground, the vacuumizing mechanism penetrates through the well cap and extends into the tube well, the vacuumizing mechanism is used for vacuumizing the interior of the tube well, and the liquid level height in the tube well is measured under the cooperation of the distance sensor and the suspended reflector, so that the water volume in the tube well is judged; vacuum in the tube well is guaranteed under the cooperation of the water pumping mechanism and the vacuumizing mechanism, meanwhile, it is guaranteed that corresponding negative pressure values exist in the tube well at different water levels, surrounding underground water is effectively led out, the technical problems that in the prior art, vacuum pressure is insufficient and energy consumption is high are solved, and the purposes that the vacuum pressure is dynamically regulated and controlled, and the service life is prolonged are achieved. And waste of energy consumption caused by too high vacuum pressure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pumping technology for dewatering wells, and in particular to an automatic control method for vacuum degree of dewatering in pipe wells. Background Technology

[0002] Vacuum well dewatering, a common method for foundation pit drainage, is widely applicable to soil layers with low permeability, such as fine sand, silt, and silty clay. Vacuum well dewatering involves drilling and installing dewatering wells in advance. A manually controlled vacuum pump is used to lower the air pressure inside the wellhead compared to atmospheric pressure, causing groundwater to flow into the well more rapidly. The pump then extracts the water, thus lowering the groundwater level around the foundation pit. In vacuum well dewatering, the vacuum value of the well has a significant impact on water seepage; therefore, setting the vacuum value is crucial for the efficiency of vacuum well dewatering.

[0003] The existing technology of controlling the vacuum degree of the well by fixing the vacuum threshold cannot adapt to dynamic geological conditions. Different geological materials at different depths in the well have different water content and seepage capacity, which means that different vacuum pressures need to be matched to the surface at different heights in the well. This results in problems such as vacuum pump response lag, low working efficiency due to insufficient vacuum pressure, or high energy consumption due to excessive vacuum pumping. Utility Model Content

[0004] The purpose of this invention is to provide an automatic control device for the vacuum degree of well water dewatering, which solves the technical problems of insufficient vacuum pressure and high energy consumption in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides an automatic control device for dewatering vacuum in wells, including a guide rail, a suspended reflector, a distance sensor, a well cap, a pumping mechanism, and a vacuuming mechanism.

[0006] The guide rail is installed inside the well and is connected to the inner wall of the well. The suspended reflector is slidably connected to the guide rail and floats on the water surface. The distance sensor is connected to the guide rail near the wellhead of the well. The distance sensor is electrically connected to the pumping mechanism and is used to measure the height of the suspended reflector.

[0007] The well cap is installed at the wellhead of the well, and the well cap is used to seal the wellhead of the well.

[0008] The pumping mechanism is located at the bottom of the well and passes through the well cap. The pumping mechanism is used to drain the water from the well.

[0009] The vacuum pumping mechanism is located on the ground, passes through the well cap and extends into the well, and is used to pump a vacuum into the well.

[0010] In an optional embodiment, the length of the guide rail is arranged parallel to the axis of the well.

[0011] In an optional embodiment, the vacuuming mechanism includes an air compressor and an air extraction pipe. The air compressor is located on the ground and is connected to the air extraction pipe, which passes through the well cap and extends into the well.

[0012] In an optional embodiment, the vacuuming mechanism further includes a signal converter, a controller, and a pressure gauge;

[0013] The signal converter, the controller, and the pressure gauge are all connected to the surface of the air compressor. The signal converter is electrically connected to the distance sensor and the controller, respectively. The controller is electrically connected to the air compressor and is used to control the start-up, shutdown, and power of the air compressor. The pressure gauge is electrically connected to the controller and is used to detect the pressure inside the air compressor.

[0014] In an optional embodiment, a transmission line is provided between the signal converter and the distance sensor, with both ends of the transmission line connected to the signal converter and the distance sensor respectively, and the transmission line passing through the well cap.

[0015] In an optional embodiment, the pumping mechanism includes a pump and a drain pipe. The pump is fixed at the bottom of the well, and the outlet of the pump is connected to the drain pipe. The drain pipe extends out of the well through the well cap.

[0016] In an optional embodiment, the pumping mechanism further includes a power cord, one end of which is connected to the pump, and the other end of which extends out of the well via the well cap. The power cord is used to supply power to the pump.

[0017] In an optional embodiment, the guide rail is configured as an I-beam, one side of the suspended reflector is provided with a through hole, one side of the through hole is provided with an opening, and the guide rail is inserted into and connected to the through hole.

[0018] In an optional embodiment, a first soil layer, a second soil layer, a third soil layer, a fourth soil layer, and a fifth soil layer are arranged around the well, and the first soil layer, the second soil layer, the third soil layer, the fourth soil layer, and the fifth soil layer are stacked sequentially along the axial direction of the well.

[0019] In an optional embodiment, a well pipe is provided inside the well, the guide rail is connected to the inner wall of the well pipe, the axis of the well pipe coincides with the axis of the well, and the outer side of the well pipe abuts against the inner wall of the well.

[0020] This utility model provides an automatic control device for dewatering vacuum in a pipe well, comprising a guide rail, a suspended reflector, a distance sensor, a well cap, a pumping mechanism, and a vacuuming mechanism. The guide rail is installed inside the pipe well and connected to the inner wall of the well. The suspended reflector is slidably connected to the guide rail and floats on the water surface. A distance sensor is connected to the guide rail near the well opening and is electrically connected to the pumping mechanism. The distance sensor measures the height of the suspended reflector. The well cap is installed at the well opening and seals the well opening. The pumping mechanism is located at the bottom of the pipe well and passes through the well cap. The pumping mechanism is used to drain the water from the well; the vacuuming mechanism is set on the ground, passing through the well cap and extending into the well. The vacuuming mechanism is used to create a vacuum in the well. With the cooperation of a distance sensor and a suspended reflector, the liquid level in the well is measured to determine the amount of water in the well. The pumping and vacuuming mechanisms work together to ensure a vacuum in the well, ensuring a negative pressure corresponding to the soil layer, effectively drawing out the surrounding groundwater. This solves the technical problems of insufficient vacuum pressure and high energy consumption in existing technologies, achieving dynamic control of vacuum pressure while avoiding energy waste caused by excessively high vacuum pressure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the automatic control device for dewatering vacuum in wells mentioned in the embodiments of this utility model;

[0022] Figure 2 for Figure 1 Cross-sectional view.

[0023] In the diagram, 1-extraction pipe; 2-transmission line; 3-signal converter; 4-controller; 5-pressure gauge; 6-air compressor; 7-distance sensor; 8-guide rail; 9-suspended reflector; 10-water pump; 11-drainage pipe; 12-power line; 13-well cap; 14-well pipe; 15-first soil layer; 16-second soil layer; 17-third soil layer; 18-fourth soil layer; 19-fifth soil layer. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figure 1 and Figure 2 As shown, some embodiments of this utility model provide an automatic control device for dewatering vacuum in a well, including a guide rail 8, a suspended reflector 9, a distance sensor 7, a well cap 13, a pumping mechanism, and a vacuuming mechanism. The guide rail 8 is installed inside the well and connected to the inner wall of the well. The suspended reflector 9 is slidably connected to the guide rail 8 and floats on the water surface. The distance sensor 7 is connected to the guide rail 8 near the well opening and is electrically connected to the pumping mechanism. The distance sensor 7 is used to measure the height of the suspended reflector 9. The well cap 13 is installed at the well opening and is used to seal the well opening. The pumping mechanism is installed at the bottom of the well and passes through the well cap 13. The pumping mechanism is used to drain water from the well. The vacuuming mechanism is installed on the ground and passes through the well cap 13 and extends into the well. The vacuuming mechanism is used to create a vacuum in the well.

[0027] This utility model provides an automatic control device for dewatering vacuum in a well, comprising a guide rail 8, a suspended reflector 9, a distance sensor 7, a well cap 13, a pumping mechanism, and a vacuuming mechanism. The guide rail 8 is installed inside the well and connected to the inner wall of the well. The suspended reflector 9 is slidably connected to the guide rail 8 and floats on the water surface. A distance sensor 7 is connected to the guide rail 8 near the wellhead and is electrically connected to the pumping mechanism. The distance sensor 7 measures the height of the suspended reflector 9. The well cap 13 is placed over the wellhead and seals the wellhead. The pumping mechanism is located at the bottom of the well and pumps water. The pumping mechanism is installed on the well cap 13. The pumping mechanism is used to drain the water in the well. The vacuuming mechanism is installed on the ground and extends into the well through the well cap 13. The vacuuming mechanism is used to create a vacuum in the well. With the cooperation of the distance sensor 7 and the suspended reflector 9, the height of the water in the well is measured, thereby determining the amount of water in the well. With the cooperation of the pumping mechanism and the vacuuming mechanism, the vacuum in the well is maintained, and sufficient negative pressure is maintained in the well to effectively draw out the surrounding groundwater. This solves the technical problems of insufficient vacuum pressure and high energy consumption in the prior art. It achieves dynamic control of vacuum pressure according to the liquid level height and avoids the waste of energy caused by excessive vacuum pressure.

[0028] The guide rail 8 is parallel to the axis of the well. The vacuuming mechanism includes an air compressor 6 and a suction pipe 1. The air compressor 6 is located on the ground and connected to the suction pipe 1, which passes through the well cap 13 and extends into the well. The vacuuming mechanism also includes a signal converter 3, a controller 4, and a pressure gauge 5. The signal converter 3, controller 4, and pressure gauge 5 are all connected to the surface of the air compressor 6. The signal converter 3 is electrically connected to the distance sensor 7 and the controller 4, respectively. The controller 4 is electrically connected to the air compressor 6 and is used to control the start, stop, and power of the air compressor 6. The pressure gauge 5 is electrically connected to the controller 4 and is used to detect the pressure inside the air compressor 6. A transmission line 2 is provided between the signal converter 3 and the distance sensor 7. The two ends of the transmission line 2 are connected to the signal converter 3 and the distance sensor 7, respectively, and the transmission line 2 passes through the well cap 13. The pumping mechanism includes a pump 10 and a drain pipe 11. The pump 10 is fixed at the bottom of the well, and its outlet is connected to the drain pipe 11, which extends out of the well via a cap 13. The pumping mechanism also includes a power cable 12, one end of which is connected to the pump 10, and the other end extends out of the well via the cap 13. The power cable 12 supplies power to the pump 10. The guide rail is constructed of I-beams. One side of the suspended reflector 9 has a through hole, and the other side of the through hole has an opening. The guide rail is inserted into and connected to the through hole. A first soil layer 15, a second soil layer 16, a third soil layer 17, a fourth soil layer 18, and a fifth soil layer 19 are arranged around the well. These layers are stacked sequentially along the axis of the well. A well pipe 14 is installed inside the well. A guide rail is connected to the inner wall of the well pipe 14. The axis of the well pipe 14 coincides with the axis of the well. The outer side of the well pipe 14 abuts against the inner wall of the well.

[0029] The operation steps provided in some embodiments of this utility model are as follows:

[0030] Step 1: Drill holes in the original ground and install 14 dewatering well pipes;

[0031] Step 2: Install guide rail 8 on well pipe 14, first install movable floating reflector 9 on guide rail 8, and then install distance sensor 7 on top of guide rail 8;

[0032] Step 3: Place a water pump 10 in the well;

[0033] Step 4: Make openings in the well cap 13 for the air compressor 6 extraction pipe 1, data transmission line 2, drainage pipe 11, and power line 12, and install the corresponding pipelines. After all pipelines are connected, cover the well cap 13 on the top of the well pipe 14 and seal all openings tightly.

[0034] Step 5: Based on the characteristics of different soil layers, preset the vacuum value at different water levels using the air compressor 6 controller 4;

[0035] Step Six: After the water pump 10 is powered on, it will begin to lower the water level.

[0036] Step 7: The distance sensor 7 starts working. After detecting the reflected signal of the movable floating reflector 9, it transmits the data to the photoelectric signal converter 3 through the data transmission line 2. The processed signal enters the air compressor 6 controller 4 to control the variable frequency air compressor 6 to reach the predetermined vacuum value.

[0037] Step 8: When the vacuum pressure gauge 5 controller 4 detects that the well vacuum value reaches the vacuum value described in step 5, the variable frequency air compressor 6 stops working; when the vacuum pressure gauge 5 controller 4 detects that the well vacuum value is less than the vacuum value described in step 5, the variable frequency air compressor 6 starts working.

[0038] Step 9: Repeat steps 6, 7, and 8 above until precipitation is complete.

[0039] Some embodiments of this invention employ a combination of a distance sensor, a photoelectric signal converter 3, an air compressor 6 controller 4, and a variable frequency air compressor 6 to preset well vacuum values ​​at different soil layer heights. As the water level drops, the data generated by the distance sensor can be converted into a signal to control the variable frequency air compressor 6, thereby adjusting the well vacuum value. Furthermore, the presence of the vacuum pressure gauge 5 controller 4 allows for real-time monitoring of the well vacuum level; when the vacuum value reaches the predetermined design value, the variable frequency air compressor 6 stops working. This invention precisely sets the internal vacuum value of the well for different soil layers, reducing energy consumption; it achieves automatic control of the internal vacuum value of the well, reducing manual labor; and it employs a dual-insurance mechanism of vacuum pressure gauge 5 controller 4 + variable frequency air compressor 6 to avoid the risk of system overload.

[0040] Some embodiments of this utility model employ a movable suspended reflector 9 and a distance sensor 7 to achieve intelligent control of the pipe diameter working status, dynamically sense water level changes, and provide parameter basis for adjusting the pipe diameter vacuum value.

[0041] Some embodiments of this utility model utilize the air compressor 6 controller 4 to set the vacuum value for different soil layers, optimize the working efficiency of the air compressor 6, and avoid the long-term full-load working state of the vacuum dewatering air compressor 6 in traditional technical solutions.

[0042] Some embodiments of this utility model utilize a dual-insurance mechanism of vacuum pressure gauge 5, controller 4, and variable frequency air compressor 6, which changes the situation in traditional technical solutions where the vacuum dewatering equipment does not work in time due to "untimely inspection of equipment working status". This solves the problem of excessively high local water levels in soil layers such as fine sand, silt, and silty clay, while avoiding equipment overload.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for automatically controlling the vacuum degree of a pipe well dewatering, characterized in that, It includes guide rails, suspended reflectors, distance sensors, well caps, pumping mechanisms, and vacuuming mechanisms; The guide rail is installed inside the well and is connected to the inner wall of the well. The suspended reflector is slidably connected to the guide rail and floats on the water surface. The distance sensor is connected to the guide rail near the wellhead of the well. The distance sensor is electrically connected to the pumping mechanism and is used to measure the height of the suspended reflector. The well cap is installed at the wellhead of the well, and the well cap is used to seal the wellhead of the well. The pumping mechanism is located at the bottom of the well and passes through the well cap. The pumping mechanism is used to drain the water from the well. The vacuum pumping mechanism is located on the ground, passes through the well cap and extends into the well, and is used to pump a vacuum into the well.

2. The automatic control device for vacuum degree of tube well dewatering according to claim 1, characterized in that, The length of the guide rail is set parallel to the axis of the well.

3. The automatic control device for vacuum degree of tube well dewatering according to claim 1, characterized in that, The vacuuming mechanism includes an air compressor and an air extraction pipe. The air compressor is installed on the ground and connected to the air extraction pipe. The air extraction pipe passes through the well cap and extends into the well.

4. The automatic control device for vacuum degree of tube well dewatering according to claim 3, characterized in that, The vacuum pumping mechanism also includes a signal converter, a controller, and a pressure gauge; The signal converter, the controller, and the pressure gauge are all connected to the surface of the air compressor. The signal converter is electrically connected to the distance sensor and the controller, respectively. The controller is electrically connected to the air compressor and is used to control the start-up, shutdown, and power of the air compressor. The pressure gauge is electrically connected to the controller and is used to detect the pressure inside the air compressor.

5. The automatic control device for vacuum degree of tube well dewatering according to claim 4, characterized in that, A transmission line is provided between the signal converter and the distance sensor, with both ends of the transmission line connected to the signal converter and the distance sensor respectively, and the transmission line is threaded through the well cap.

6. The automatic control device for vacuum degree of tube well dewatering according to claim 1, characterized in that, The pumping mechanism includes a pump and a drain pipe. The pump is fixed at the bottom of the well, and the outlet of the pump is connected to the drain pipe. The drain pipe extends out of the well through the well cap.

7. The automatic control device for vacuum degree of tube well dewatering according to claim 6, characterized in that, The pumping mechanism also includes a power cord, one end of which is connected to the pump, and the other end of which extends out of the well via the well cap. The power cord is used to supply power to the pump.

8. The automatic control device for vacuum degree of tube well dewatering according to claim 1, characterized in that, The guide rail is made of I-beam, and a through hole is provided on one side of the suspended reflector. An opening is provided on one side of the through hole, and the guide rail is inserted into and connected to the through hole.

9. The automatic control device for vacuum degree of tube well dewatering according to claim 1, characterized in that, The well is surrounded by a first soil layer, a second soil layer, a third soil layer, a fourth soil layer, and a fifth soil layer, which are stacked sequentially along the axis of the well.

10. The automatic control device for vacuum degree of tube well dewatering according to any one of claims 1-9, characterized in that, The well is equipped with a well pipe, and the guide rail is connected to the inner wall of the well pipe. The axis of the well pipe coincides with the axis of the well, and the outer side of the well pipe abuts against the inner wall of the well.

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