An intelligent jet well point system

Abstract

This utility model relates to the technical field of groundwater reuse and discloses an intelligent jetting well point system, including a nested double-pipeline, a high-pressure water pump, and an ejector, as well as a processor. The processor is connected to the high-pressure water pump, a turbine generator, a flow meter, and the ejector. The high-pressure water pump generates high-pressure working water and delivers it to the annular space between the inner and outer pipes of the double-pipeline. The turbine generator is located at the outlet of the inner pipe and converts the kinetic energy generated by the high-pressure working water and groundwater flow into electrical energy, realizing energy recovery. The flow meter is located at the inlet of the inner pipe and detects the flow rate of groundwater flowing into the inner pipe. The processor receives the groundwater flow rate information and controls the speed of the high-pressure water pump and the nozzle opening size of the ejector.

Description

Technical Field

[0001] This utility model belongs to the technical field of groundwater reuse, specifically relating to an intelligent jet well point system. Background Technology

[0002] Wellpoint dewatering is an important technical means for groundwater control in foundation pit engineering, and includes various types. Among them, jet wellpoint systems achieve dewatering by creating negative pressure through the jetting action of working water. Compared with lightweight wellpoint systems, jet wellpoint systems require a high-pressure working water flow to continuously create a vacuum environment, resulting in a significant increase in energy consumption per unit operation cycle.

[0003] In engineering practice, due to the spatial variability of soil permeability characteristics, traditional jet well point systems lack the necessary parameter monitoring. They cannot automatically adjust the jet pressure parameters according to changes in permeability, making it difficult to adjust the negative pressure intensity in real time to adapt to different soil conditions. The level of intelligence is low. This rigid operation mode not only results in low energy utilization, but may also lead to local precipitation failure or soil erosion risks due to the mismatch between hydraulic parameters and soil permeability. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an intelligent jet well point system that can adjust the gear of the high-pressure water pump based on the groundwater flow information detected by the flow meter, thereby changing the flow rate of the high-pressure working water. Simultaneously, it can adjust the nozzle opening size of the auxiliary jetter to change the water spraying speed, thereby regulating the negative pressure in the negative pressure zone to adapt to the drainage of different types of aquifers. This system demonstrates a high level of intelligence.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An intelligent jetting wellpoint system includes a nested dual-pipeline, a high-pressure water pump, and an ejector, as well as a processor connected to the high-pressure water pump, a turbine generator, a flow meter, and the ejector.

[0007] The high-pressure water pump is used to generate high-pressure working water and deliver it to the annular space between the inner and outer pipes of the dual-pipeline system.

[0008] The turbine generator is located at the outlet of the inner pipe and is used to convert the kinetic energy generated by the flow of high-pressure working water and groundwater into electrical energy, thereby realizing energy recovery.

[0009] The flow meter is installed at the inlet of the inner pipe to detect the flow rate of groundwater flowing into the inner pipe.

[0010] The processor receives groundwater flow information and controls the speed of the high-pressure water pump and the opening size of the nozzle of the injector.

[0011] Furthermore, the injector includes an electric valve located at the nozzle position of the inner tube. The electric valve is connected to the processor and is used to adjust the nozzle opening size.

[0012] Furthermore, the nozzle is located between the mixing chamber and the diffusion chamber of the inner tube, and is flared. A lower cover plate is arranged across the nozzle radially, and an upper cover plate is arranged on the top surface of the nozzle. Openings are provided on the upper cover plate and the lower cover plate at the corresponding nozzle channel positions. A cavity for accommodating the actuator of the electric valve is opened on the side wall of the space enclosed by the upper cover plate and the lower cover plate. The valve body of the electric valve is connected to the openings of the upper cover plate and the lower cover plate, and is connected to the upper cover plate and the lower cover plate by flanges.

[0013] Furthermore, the connection points between the electric valve and the upper and lower cover plates, as well as the connection points between the upper and lower cover plates and the nozzle, are all sealed with waterproof colloid and covered with waterproof membrane.

[0014] Furthermore, the inner pipe wall from the water inlet position to the ejector position adopts a filter screen structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Based on the groundwater flow information detected by the flow meter, the high-pressure water pump speed is adjusted to change the flow rate of the high-pressure working water. At the same time, the nozzle opening size of the auxiliary injector is adjusted to change the water spraying speed, thereby adjusting the negative pressure of the negative pressure zone to adapt to the drainage of different types of water-bearing soil layers. It has a high level of intelligence, ensuring sufficient drainage power while avoiding energy waste caused by blindly increasing power.

[0017] 2. An electric valve is cleverly designed at the nozzle position to adjust the nozzle opening size, which is very convenient, quick and practical. In addition, the jet well point system of this utility model is also equipped with a turbine generator, which can convert the kinetic energy of groundwater and high-pressure working water into electrical energy to achieve energy recovery. This collected electrical energy can be used as a backup power source for the processor, further saving energy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an axial cross-sectional view of the electric valve of this utility model positioned at the nozzle.

[0020] Figure 3 This is a top view of the electric valve of this utility model with the nozzle position set and the top cover removed.

[0021] Among them, 1-injector, 11-nozzle, 12-electric valve, 13-lower cover plate, 14-upper cover plate, 2-turbine generator, 3-flow meter, 4-inner pipe, 5-outer pipe, 6-filter screen, 7-wiring hole. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate the intelligent jet well point system of this utility model. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0023] like Figure 1-3 As shown, this utility model provides an intelligent jetting well point system, including a nested double-pipe pipeline, a high-pressure water pump, an ejector 1, and a processor. The processor is connected to the high-pressure water pump, a turbine generator 2, a flow meter 3, and the ejector 1. The high-pressure water pump generates high-pressure working water and delivers it to the annular space between the inner pipe 4 and the outer pipe 5 of the double-pipe pipeline. The turbine generator 2 is located at the outlet of the inner pipe 4 and is used to convert the kinetic energy generated by the high-pressure working water and the groundwater flow into electrical energy to achieve energy recovery. The flow meter 3 is located at the inlet of the inner pipe 4 and is used to detect the flow rate of the groundwater flowing into the inner pipe. The processor receives the groundwater flow rate information and controls the speed of the high-pressure water pump and the opening size of the nozzle of the ejector 1. In this way, based on the groundwater flow information detected by the flow meter, the speed of the high-pressure water pump is adjusted to change the flow rate of the high-pressure working water. At the same time, the nozzle opening size of the auxiliary injector is adjusted to change the water spraying speed, thereby regulating the negative pressure of the negative pressure zone to adapt to the drainage of different types of water-bearing soil layers. It has a high level of intelligence. In addition, it is equipped with a turbine generator, which can recover the kinetic energy generated by the water flow. This collected electrical energy can be used as a backup power source for the processor, realizing energy reuse.

[0024] Specifically as follows:

[0025] The outer diameter of the outer pipe 5 is 100~150mm, and the material should be able to withstand the water pressure of high-pressure working water. The annular channel formed by the outer pipe 5 and the inner pipe 4 is the operating channel for high-pressure working water.

[0026] The outer diameter of the inner pipe 4 is 30~50mm. It is a channel for groundwater and high-pressure working water to be discharged from underground to the surface. The pipe wall has built-in lead holes, which can be used to lay lines and realize the electrical connection between the ejector, flow meter, turbine generator and processor.

[0027] The flow meter 3 is cylindrical in shape, with an outer diameter that matches the outer diameter of the inner tube 4. The two can be connected by threads. When groundwater flows through the flow meter 3, the flow meter 3 can collect the outflow velocity of the groundwater, convert the velocity information into an electrical signal, and transmit it to the processor through a line connection.

[0028] The turbine generator 2 is installed at the outlet of the inner pipe 4. After the groundwater is pumped out, it flows through the turbine and drives the blades to rotate, thus generating electricity. The collected electrical energy can be used as a backup power source for the controller to complete energy recovery.

[0029] This multi-stage high-pressure water pump is a device for generating high-pressure working water. By adjusting the stage, different working water pressures can be generated. The power to pump groundwater varies with the working water pressure.

[0030] The inner pipe 4, from the inlet to the ejector 1, has a filter screen 6 structure on its wall, which serves as a return channel for the high-pressure working water. This allows the high-pressure working water to enter the mixing chamber of the inner pipe, mix with the groundwater, and then enter the nozzle together.

[0031] The outer diameter of the ejector 1 is the same as that of the inner pipe 4. It includes a nozzle 11 constructed from guide blocks and an electric valve 12 installed on the nozzle. High-pressure working water flows through the nozzle 11 and is accelerated, thereby forming a negative pressure zone, which becomes the driving force for pumping groundwater. The diameter of the nozzle 11 is adjustable from 2 to 6 mm. Its adjustment is executed by the electric valve controlled by the processor. By adjusting the orifice size, the water spraying speed is changed, thereby adjusting the negative pressure of the negative pressure zone to adapt to the drainage of different types of aquifers.

[0032] The electric valve 12 can be an electric regulating ball valve, mainly used for adjusting and controlling parameters such as pipeline medium pressure, flow rate, and liquid level. It is generally divided into electric O-type regulating ball valve and electric V-type regulating ball valve. The opening degree of the ball valve can be controlled by inputting a 4-20mA signal and a 220VAC power supply. Its nominal pressure can reach 6.4MPa, and it is suitable for various fields such as chemical, petrochemical, petroleum, power, liquefied gas, and mechanical equipment.

[0033] The electric valve 12 is located at the nozzle 11 in the inner tube. The electric valve 12 is connected to the processor and is used to adjust the opening size of the nozzle. Since the nozzle is located between the mixing chamber and the diffusion chamber of the inner tube, it is shaped like a funnel and is specifically constructed by the guide block. This funnel-shaped channel can form a closed space between the two baffles by axially spaced two baffles, each with an area larger than the cross-section of the corresponding nozzle. For ease of installation, a lower cover plate 13 is arranged across the nozzle radially, and an upper cover plate 14 is arranged on the top surface of the nozzle. In this way, the upper cover plate 14 and the lower cover plate 13 can separate part of the nozzle channel into a closed space.

[0034] We can provide openings in the upper cover plate 14 and the lower cover plate 13 corresponding to the channel positions of the nozzle 11, and provide a cavity in the side wall of the space enclosed by the upper cover plate 14 and the lower cover plate 13 to accommodate the actuator of the electric valve 12. The valve body of the electric valve 12 is connected to the openings of the upper cover plate 14 and the lower cover plate 13, so that the electric valve can be assembled onto the nozzle to adjust the size of the nozzle opening.

[0035] To increase tightness, the electric valve 12 can be equipped with a flange assembly structure, so that the flanges on the upper and lower sides of the valve body can be assembled to the opening positions of the upper cover plate 14 and the lower cover plate 13 by bolts, and the upper cover plate 14 and the lower cover plate 13 can be fixed to the side wall of the nozzle by bolts.

[0036] To improve waterproofing, we use waterproof sealant to seal the connection points between the electric valve 12 and the upper cover plate 14 and the lower cover plate 13, as well as the connection points between the upper cover plate 14, the lower cover plate 13 and the nozzle 11, such as the positions of each connecting bolt. At the same time, waterproof membrane is laid on the entire upper cover plate 14 and the lower cover plate 13, and waterproof membrane can also be laid around the actuator of the electric valve 12 to increase waterproofing.

[0037] When constructing the intelligent jetting well point system of this utility model, a well hole is first drilled using a high-pressure water jetting method. Then, the outer pipe and lower filter structure are installed according to the general construction method. The inner pipe is composed of a turbine generator, inner pipe, jetting device, working water return channel, and flow meter connected in series from top to bottom. The various parts are assembled by screwing together. In addition, wiring holes are designed on the pipe wall corresponding to each part of the inner pipe to lead out the line and realize electrical connection with the processor.

[0038] The flow meter's wiring, from bottom to top, passes through the working water return channel, the inner pipe, and the turbine generator's wiring hole 7, leading to the ground and connecting to the processor. The nozzle's wiring, from bottom to top, passes through the inner pipe and the turbine generator's wiring hole 7, leading to the ground and connecting to the processor. The turbine generator is located at the outlet of the inner pipe, above ground, and its wiring is directly connected to the processor. The high-pressure water pump's outlet is connected to the interlayer between the inner and outer pipes. The processor and the multi-stage high-pressure water pump are placed above ground in a safe area convenient for operators.

[0039] In actual operation, the optimal groundwater discharge rate can be pre-determined based on information such as construction period and geological conditions. The flow meter can measure the groundwater discharge rate in real time and feed this rate back to the processor. By comparing the real-time groundwater discharge rate with the expected set value, the processor controls the adjustment of the high-pressure water pump's speed. At the same time, it assists in adjusting the nozzle diameter using electric valves, thereby increasing or decreasing the negative pressure in the vacuum zone to adapt to the drainage dynamics requirements of this type of soil layer. This ensures sufficient drainage dynamics while avoiding energy waste caused by blindly increasing power.

[0040] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Various modifications or variations that can be made by those skilled in the art without creative effort within the scope of the appended claims are still within the scope of protection of this patent.

Claims

1. An intelligent jetting well point system comprising nested double pipe lines, high pressure water pump, jetting machine, characterized in that: It also includes a processor, which is connected to a high-pressure water pump, a turbine generator, a flow meter, and an ejector. The high-pressure water pump is used to generate high-pressure working water and deliver it to the annular space between the inner and outer pipes of the dual-pipeline system. The turbine generator is located at the outlet of the inner pipe and is used to convert the kinetic energy generated by the flow of high-pressure working water and groundwater into electrical energy, thereby realizing energy recovery. The flow meter is installed at the inlet of the inner pipe to detect the flow rate of groundwater flowing into the inner pipe. The processor receives groundwater flow information and controls the speed of the high-pressure water pump and the opening size of the nozzle of the injector.

2. The intelligent injection well point system of claim 1, wherein: The injector includes an electric valve located at the nozzle position of the inner tube. The electric valve is connected to the processor and is used to adjust the nozzle opening size.

3. The intelligent injection well point system of claim 2, wherein: The nozzle is located between the mixing chamber and the diffusion chamber of the inner tube and is flared. A lower cover plate is arranged across the nozzle radially, and an upper cover plate is arranged on the top surface of the nozzle. Openings are provided on the upper cover plate and the lower cover plate at the corresponding nozzle channel positions. A cavity for accommodating the actuator of the electric valve is opened on the side wall of the space enclosed by the upper cover plate and the lower cover plate. The valve body of the electric valve is connected to the openings of the upper cover plate and the lower cover plate and is connected to the upper cover plate and the lower cover plate by flanges.

4. The intelligent injection well point system of claim 3, wherein: The connection points between the electric valve and the upper and lower cover plates, as well as the connection points between the upper and lower cover plates and the nozzle, are all sealed with waterproof colloid and covered with waterproof membrane.

5. The intelligent injection well point system of claim 1, wherein: The inner pipe wall from the water inlet position to the ejector position adopts a filter screen structure.

Images