A recharging system and control method

Abstract

This invention belongs to the field of foundation pit recharge technology, and discloses a recharge system and control method. The recharge system includes a recharge pipe, a water supply module, a jetting module, and a vibration module. Multiple water outlets are spaced apart on the side wall of the recharge pipe. The water supply module includes a water supply pipe for conveying recharge water into the recharge pipe. The recharge water in the recharge pipe permeates into the soil layer through the multiple water outlets. During the recharge process, the water flow rate in the water supply pipe is monitored in real time. When the water flow rate is less than or equal to a first threshold, it indicates that there is blockage at the water outlet. At this time, gas is introduced into the jetting pipe to clear the blockage at the water outlet through the jetting nozzle, and the vibration module is vibrated to clear the blockage around the water outlet. When the water flow rate recovers to above the first threshold, the gas supply to the jetting pipe and the vibration of the vibration module are stopped. This achieves intelligent and efficient real-time clearing of blockages during the recharge process, ensuring recharge efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundation pit recharge, in particular to a recharge system and a control method. BACKGROUND

[0002] In recent years, with the continuous increase of urban underground space development, a large number of deep foundation pit projects appear in urban construction projects. The confined water refers to the water in the aquifer between the upper and lower water-resisting layers. The geological layer where the confined water is located is called the confined aquifer. In soft soil water-rich areas, there are often multiple confined aquifers under the ground. The confined aquifer can withstand pressure, and when the overlying water-resisting layer is drilled, water can rise or spew out from the perforation. Therefore, the high-pressure water head in the confined aquifer is an important factor threatening the stability of the deep foundation pit.

[0003] If the confined water is not reasonably controlled during the construction of the deep foundation pit, the phenomenon of foundation pit gushing damage or large-scale ground subsidence around the foundation pit may occur. In order to reduce the adverse effects of foundation pit dewatering, engineers often use groundwater recharge outside the foundation pit to compensate for the water level drop outside the pit caused by dewatering in the pit and further control the development of ground subsidence. The recharge includes a filter pipe buried underground, and the filter pipe has filter holes in the side wall. Water is introduced into the filter pipe from the ground, and the water in the filter pipe flows out through the filter holes.

[0004] However, with the increase of recharge time, the filter holes in the side wall of the filter pipe are prone to blockage, affecting the recharge effect and reducing the recharge efficiency. In the prior art, to solve the problem of recharge blockage, the method of periodic back flushing is usually used. Specifically, in the recharge well, the pump is started to remove the blockage in the water and discharge it into the sewage pipe on the ground. Even if the number of recharge wells is more than the number of pumping wells and the method of periodic back flushing is used, the recharge amount will gradually decrease, and the construction cost of this method is high, and it cannot effectively solve the problem of reduced recharge efficiency.

[0005] Therefore, there is an urgent need for a recharge system and a control method to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a recharge system and a control method, which can effectively solve the problem of blockage during the recharge process, ensure high recharge efficiency, and have low construction cost.

[0007] To achieve this purpose, the present application adopts the following technical solutions:

[0008] In a first aspect, a recharge system is provided, comprising:

[0009] The recharge pipe comprises a pipe body and upper and lower sealing plates arranged at the end of the pipe body, the pipe body is buried underground, and a plurality of water outlets are arranged at intervals on the side wall of the pipe body.

[0010] a water supply module comprising a water supply pipe sealed through the upper sealing plate and extending into the pipe body;

[0011] a jetting module comprising a jetting pipe sealed through the upper sealing plate and extending into the pipe body, the jetting pipe being provided with a plurality of jetting ports at intervals along the extension direction thereof;

[0012] a vibration exciting module comprising a vibration exciting pipe sealed through the upper sealing plate and abutting against the inner wall of the pipe body to transmit vibration to the pipe body.

[0013] As a preferred scheme of the recharging system provided by the present application, the water outlet holes are arranged on the recharging pipe within a range from a depth H1 to a depth H2 in the ground, and H1≤H2;

[0014] The jetting pipe comprises a first straight pipe section and a first spiral pipe section, the upper end of the first spiral pipe section corresponding to a depth D1 in the ground, the lower end of the first spiral pipe section corresponding to a depth D2 in the ground, D1≤H1, D2≥H2, and the plurality of jetting ports being arranged on the first spiral pipe section.

[0015] As a preferred scheme of the recharging system provided by the present application, the vibration exciting pipe comprises a second straight pipe section and a second spiral pipe section, the second spiral pipe section being arranged on the inner wall of the recharging pipe, the upper end of the second spiral pipe section corresponding to a depth L1 in the ground, the lower end of the second spiral pipe section corresponding to a depth L2 in the ground, L1≤H1, L2≥H2.

[0016] As a preferred scheme of the recharging system provided by the present application, the water supply module further comprises a water pump unit, the inner cavity of the water pump unit being in communication with the water supply pipe, the jetting module further comprises a first air pump, the inner cavity of the first air pump being in communication with the jetting pipe, the vibration exciting module further comprises a second air pump, the vibration exciting pipe being of a closed structure, and the inner cavity of the second air pump being in communication with the vibration exciting pipe to circulate and pressurize the gas in the vibration exciting pipe.

[0017] As a preferred scheme of the recharging system provided by the present application, a first valve is arranged on the water supply pipe, a second valve is arranged on the jetting pipe, and a third valve is arranged on the vibration exciting pipe.

[0018] As a preferred scheme of the recharging system provided by the present application, a first flow meter is further arranged on the water supply pipe, the first flow meter being used to detect and record the flow in the water supply pipe.

[0019] A second flow meter is further arranged on the jetting pipe, the second flow meter being used to detect and record the flow of gas in the jetting pipe.

[0020] The third flow meter is arranged on the excitation pipe and is used for detecting and recording the gas flow in the excitation pipe.

[0021] As a preferred scheme of the recharging system provided by the application, the recharging system further comprises a control module, which is in communication connection with the water pump unit, the first air pump, the second air pump, the first valve, the second valve, the third valve, the first flow meter, the second flow meter and the third flow meter.

[0022] The control module can control the first air pump and the second air pump to start when the detection value of the first flow meter is less than or equal to a first threshold value.

[0023] As a preferred scheme of the recharging system provided by the application, the gas pressure ejected from the air injection port is 3-6 times of the water pressure in the recharging pipe.

[0024] As a preferred scheme of the recharging system provided by the application, the pipe body is made of a steel pipe, the water supply pipe is made of one of polyethylene pipe material, polypropylene pipe material and polybutylene pipe material, and the air injection pipe and the excitation pipe are both made of flexible material.

[0025] In a second aspect, a recharging system control method is provided, comprising the following steps:

[0026] Detecting the water flow in the water supply pipe;

[0027] If the water flow is less than or equal to a first threshold value, then gas is introduced into the air injection pipe, so that the gas is ejected to the water outlet hole through the air injection port and the excitation pipe is vibrated to clean the water outlet hole; otherwise, the gas introduction into the air injection pipe is stopped and the vibration of the excitation pipe is also stopped.

[0028] The application has the following beneficial effects:

[0029] The application provides a recharge system, which comprises a recharge pipe, a water supply module, an air injection module and a vibration excitation module. The recharge pipe comprises a pipe body and upper and lower sealing plates arranged at the ends of the pipe body. The pipe body is buried underground, and a plurality of water outlets are arranged at the side wall of the pipe body at intervals. The water supply module comprises a water supply pipe which is sealed through the upper sealing plate and extends into the pipe body to deliver recharge water into the recharge pipe. The recharge water in the recharge pipe penetrates into the soil through the plurality of water outlets. After a period of recharge, the water outlets are easily blocked by silt. At this time, the air injection module and the vibration excitation module can be used to clean the blocked water outlets. Specifically, the air injection module comprises an air injection pipe which is sealed through the upper sealing plate and extends into the pipe body. A plurality of air injection ports are arranged on the air injection pipe at intervals along the extension direction of the air injection pipe. The air injection pipe is used to deliver gas and inject high-pressure gas into the water outlets and the surrounding of the water outlets through the plurality of air injection ports, so as to clean the silt in the water outlets and restore the permeability of the water outlets. The vibration excitation module comprises a vibration excitation pipe which is sealed through the upper sealing plate and abuts against the inner wall of the pipe body. The vibration excitation pipe can generate vibration and transmit the vibration to the pipe body to vibrate and clean the blockage around the water outlets. Compared with the prior art, the recharge system provided by the application can effectively solve the blockage problem in the recharge process through the joint action of the air injection module and the vibration excitation module, ensure a high recharge efficiency, and reduce the construction cost.

[0030] The application further provides a recharge system control method. The water flow in the water supply pipe is monitored in real time during the recharge process. When the water flow is less than or equal to a first threshold value, gas is introduced into the air injection pipe to inject the gas into the water outlets through the air injection ports to clean the blockage and to make the vibration excitation pipe vibrate to vibrate and clean the blockage around the water outlets. When the water flow is restored to be greater than the first threshold value, the introduction of the gas into the air injection pipe is stopped and the vibration of the vibration excitation pipe is stopped. The recharge system control method can intelligently and efficiently clean the blockage in real time during the recharge process and ensure the recharge efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic diagram of the recharge system provided by the embodiment of the application;

[0032] Figure 2 is a structural schematic diagram of the recharge system provided by the embodiment of the application; Figure 1 is a local enlarged view of A in the recharge system provided by the embodiment of the application;

[0033] Figure 3 is a flow chart of the recharge system control method provided by the embodiment of the application.

[0034] In the drawings:

[0035] 1, recharge pipe; 2, water supply module; 3, air injection module; 4, vibration excitation module; 5, control module;

[0036] 11. Pipe body; 12. Upper sealing plate; 13. Lower sealing plate; 111. Water outlet;

[0037] 21. Water supply pipe; 22. Water pump unit; 23. First valve; 24. First flow meter;

[0038] 31. Jet pipe; 32. First air pump; 33. Second valve; 34. Second flow meter;

[0039] 311. First straight pipe section; 312. First spiral pipe section; 3121. Jet nozzle;

[0040] 41. Vibration tube; 42. Second air pump; 43. Third valve; 44. Third flow meter;

[0041] 411. Second straight pipe section; 412. Second spiral pipe section;

[0042] 100. Ground. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0044] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of the embodiments, the terms "upper", "lower", "left", "right", and the like, orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0047] As shown in Figure 1 and Figure 2 , the present embodiment provides a recharge system, which can clean the blockage in time during the recharge process. The recharge system comprises a recharge pipe 1, a water supply module 2, a jet module 3 and a vibration excitation module 4.

[0048] Referring to Figure 1 , the recharge pipe 1 comprises a pipe body 11, and an upper sealing plate 12 and a lower sealing plate 13 sealingly arranged at the end of the pipe body 11. The pipe body 11 is buried underground, the upper sealing plate 12 is sealingly connected to the upper end of the pipe body 11, and the lower sealing plate 13 is sealingly connected to the lower end of the pipe body 11. The side wall of the pipe body 11 is provided with a plurality of water outlets 111 at intervals. The water supply module 2 comprises a water supply pipe 21, which sealingly penetrates the upper sealing plate 12 and extends into the pipe body 11, for conveying recharge water into the recharge pipe 1, and the recharge water in the recharge pipe 1 penetrates into the soil layer through the plurality of water outlets 111.

[0049] After a period of recharge, the water outlet 111 position is easily blocked by silt, at which time the blocked water outlet 111 can be cleaned by the jet module 3 and the vibration excitation module 4. Specifically, referring to Figure 1 and Figure 2 , the jet module 3 comprises a jet pipe 31, which sealingly penetrates the upper sealing plate 12 and extends into the pipe body 11, and a plurality of jet ports 3121 are arranged on the jet pipe 31 at intervals along the extension direction thereof, the jet pipe 31 is used to convey gas and jet high-pressure gas to the water outlet 111 and the surrounding of the water outlet 111 through the plurality of jet ports 3121, thereby cleaning the silt at the water outlet 111 and restoring the permeation function of the water outlet 111. The vibration excitation module 4 comprises a vibration excitation pipe 41, which sealingly penetrates the upper sealing plate 12 and abuts against the inner wall of the pipe body 11, and the vibration excitation pipe 41 can generate vibration and transmit the vibration to the pipe body 11 to vibrate and clean the blockage around the water outlet 111.

[0050] Compared with the prior art, in the recharge system provided by the present application, the jet module 3 and the vibration excitation module 4 jointly act to effectively solve the blockage problem in the recharge process, ensure a high recharge efficiency, and reduce the construction cost.

[0051] In the embodiment, the pipe body 11 of the recharge pipe 1 is made of steel pipe, which has high strength and can withstand the impact of water pressure and high-pressure gas. Alternatively, the pipe body 11 is made of a Q235 steel material bridge type water filter pipe, and the water filtering holes of the bridge type water filter pipe are the water outlet holes 111. The nominal diameter of the selected bridge type water filter pipe is 250mm-350mm, the bottom of which is closed by the lower sealing plate 13, and the upper sealing plate 12 at the top is provided with through holes for penetrating the water supply pipe 21, the air injection pipe 31 and the excitation pipe 41.

[0052] In the embodiment, the pipe body 11 of the recharge pipe 1 is provided with water outlet holes 111 in the range of underground depth H1 to underground depth H2, H1≤H2. Referring to Figure 1 , the underground depth is the vertical distance from the ground 100 downward. The range of underground depth H1 to underground depth H2 is the recharge target depth range, which is known before the recharge construction. For example, H1 is 5m and H2 is 10m. That is, the soil layer corresponding to the depth range of 5m to 10m underground is the soil layer required for the recharge construction. Therefore, a plurality of water outlet holes 111 can be provided on the side wall of the pipe body 11 corresponding to the depth range of 5m to 10m underground.

[0053] Further, the plurality of water outlet holes 111 are distributed in a circumferential array on the side wall of the pipe body 11 to ensure the uniformity of water outlet.

[0054] In the embodiment, the water supply module 2 further comprises a water pump unit 22, the inner cavity of which is communicated with the water supply pipe 21 for pumping water into the water supply pipe 21. The water supply pipe 21 is made of high-strength corrosion-resistant plastic pipe, for example, one of polyethylene pipe, polypropylene pipe and polybutylene pipe, with a nominal diameter of 40mm-75mm and an open bottom.

[0055] In the embodiment, the air injection module 3 further comprises a first air pump 32, the inner cavity of which is communicated with the air injection pipe 31 for delivering gas into the air injection pipe 31, so that the air injection port 3121 on the air injection pipe 31 sprays high-pressure gas, which in turn sprays to the water outlet hole 111 to clean the blockage such as silt.

[0056] Alternatively, referring to Figure 1The air injection pipe 31 comprises a first straight pipe section 311 and a first spiral pipe section 312. The upper end of the first straight pipe section 311 is connected with the first air pump 32, and the lower end is connected with the first spiral pipe section 312. The lower end of the first spiral pipe section 312 extends to the bottom of the pipe body 11 of the recharge pipe 1. The upper end of the first spiral pipe section 312 corresponds to the underground depth D1, that is, the vertical distance between the upper end of the first spiral pipe section 312 and the ground 100 is D1. The lower end of the first spiral pipe section 312 corresponds to the underground depth D2, that is, the vertical distance between the lower end of the first spiral pipe section 312 and the ground 100 is D2. D1≤H1, D2≥H2, and a plurality of air injection ports 3121 are arranged on the first spiral pipe section 312. That is, the extension range of the first spiral pipe section 312 covers at least the recharge target depth range, so that the injection range of the injection pipe is greater than or equal to the water outlet range of the recharge pipe 1, and all the water outlet holes 111 can be cleaned by injection.

[0057] For example, H1 is 5m, H2 is 10m, D1 is 5m, and D2 is 10m. The arrangement range of the injection port and the arrangement range of the water outlet hole 111 both correspond to the recharge target depth range. Alternatively, H1 is 5m, H2 is 10m, D1 is 4.8m, and D2 is 10.2m. The arrangement range of the injection port is greater than the arrangement range of the water outlet hole 111, so as to ensure that all the water outlet holes 111 can be cleaned by injection.

[0058] Since the water outlet holes 111 are arranged in a circle on the pipe body 11 of the recharge pipe 1, by arranging the first spiral pipe section 312, the extension length of the air injection pipe 31 in the recharge pipe 1 can be increased, the arrangement space of the air injection pipe 31 can be increased, and all the water outlet holes 111 arranged in a circle can be cleaned. By arranging the first straight pipe section 311 between the first spiral pipe section 312 and the first air pump 32, the gas can be smoothly delivered into the first spiral pipe section 312, and the resistance in the gas flow process can be reduced.

[0059] Preferably, the air injection pipe 31 is made of flexible material and is easy to bend to form the first spiral pipe section 312. The nominal diameter of the air injection pipe 31 is 25mm-40mm. In the embodiment, the air injection pipe 31 is made of semi-flexible plastic pipe, which is convenient for bending and processing, and also has certain strength to withstand the impact pressure of the gas. Further, the spiral radius of the first spiral pipe section 312 is determined according to the actual inner diameter of the recharge pipe 1, and is generally slightly smaller than the inner diameter of the recharge pipe 1.

[0060] In the embodiment, the vibration exciting module 4 further comprises a second air pump 42, and the vibration exciting pipe 41 is of a closed structure. The inner cavity of the second air pump 42 is communicated with the vibration exciting pipe 41, so as to circulate and pump the gas in the vibration exciting pipe 41, so that the vibration exciting pipe 41 generates vibration, and the vibration is transmitted to the pipe body 11, and then the blockage at the water outlet hole 111 is cleaned by vibration.

[0061] Optionally, referring to Figure 1 The second straight pipe section 411 is connected with the second air pump 42 at its upper end and connected with the second spiral pipe section 412 at its lower end. The lower end of the second spiral pipe section 412 extends to the bottom of the recharge pipe 1 and is arranged along the inner wall of the recharge pipe 1. The second straight pipe section 411 is used to make the gas in the second spiral pipe section 412 circulate smoothly and reduce the resistance in the process of gas flow. The upper end of the second spiral pipe section 412 corresponds to the underground depth L1, that is, the vertical distance between the upper end of the second spiral pipe section 412 and the ground 100 is L1. The lower end of the second spiral pipe section 412 corresponds to the underground depth L2, that is, the vertical distance between the lower end of the second spiral pipe section 412 and the ground 100 is L2. L1≤H1, L2≥H2, and the extension range of the second spiral pipe section 412 covers at least the recharge target depth range, so that the vibration cleaning range is greater than or equal to the water outlet range of the recharge pipe 1, and all the water outlet holes 111 can be vibration cleaned.

[0062] For example, H1 is 5m, H2 is 10m, L1 is 5m, and L2 is 10m. The contact range of the excitation pipe 41 with the inner wall of the recharge pipe 1 (i.e. the vibration cleaning range) and the arrangement range of the water outlet holes 111 both correspond to the recharge target depth range. Alternatively, H1 is 5m, H2 is 10m, L1 is 4.7m, and L2 is 10.3m. The vibration cleaning range is greater than the arrangement range of the water outlet holes 111, so as to ensure that all the water outlet holes 111 can be vibration cleaned.

[0063] By arranging the second spiral pipe section 412, the contact range of the excitation pipe 41 with the inner wall of the recharge pipe 1 can be increased, and the reliability of vibration cleaning can be ensured.

[0064] Preferably, the excitation pipe 41 is made of flexible material and is easy to bend to form the second spiral pipe section 412. The nominal diameter of the excitation pipe 41 is 25mm-40mm. In the embodiment, the excitation pipe 41 is made of semi-flexible rubber material. Further, the spiral radius of the second spiral pipe section 412 is determined according to the actual inner diameter of the recharge pipe 1 and is generally slightly smaller than the inner diameter of the recharge pipe 1.

[0065] Referring to Figure 1The water supply pipe 21 is provided with a first valve 23 and a first flow meter 24. The first valve 23 is used to control the on-off of the water supply pipe 21, and the first flow meter 24 is used to detect and record the flow in the water supply pipe 21. The air injection pipe 31 is provided with a second valve 33 and a second flow meter 34. The second valve 33 is used to control the on-off of the air injection pipe 31, and the second flow meter 34 is used to detect and record the gas flow in the air injection pipe 31. The excitation pipe 41 is provided with a third valve 43 and a third flow meter 44. The third valve 43 is used to control the on-off of the excitation pipe 41, and the third flow meter 44 is used to detect and record the gas flow in the excitation pipe 41.

[0066] Further, referring to Figure 1 The recharge system further comprises a control module 5, which is in communication connection with the water pump set 22, the first air pump 32 and the second air pump 42, so as to control the opening and closing of the water pump set 22, the first air pump 32 and the second air pump 42. The control module 5 is in communication connection with the first valve 23, the second valve 33 and the third valve 43, so as to control the opening and closing and the opening degree of the first valve 23, the second valve 33 and the third valve 43. The control module 5 is in communication connection with the first flow meter 24, the second flow meter 34 and the third flow meter 44, so as to obtain the detection values of the first flow meter 24, the second flow meter 34 and the third flow meter 44, and thus obtain the real-time flow values in the water supply pipe 21, the air injection pipe 31 and the excitation pipe 41.

[0067] The control module 5 can control the first air pump 32 and the second air pump 42 to start when the detection value of the first flow meter 24 is less than or equal to the first threshold value. When the first flow meter 24 detects that the flow value of the water supply pipe 21 is less than or equal to the first threshold value, it indicates that there is a blockage phenomenon at the water outlet hole 111. The first flow meter 24 sends a signal to the control module 5, and the control module 5 receives the signal and sends an instruction to control the first air pump 32 and the second air pump 42 to start, so that the air injection port 3121 of the air injection pipe 31 sprays high-pressure gas to clean the water outlet hole 111, and the excitation pipe 41 generates vibration to shake the blockage at the water outlet hole 111. After the first air pump 32 and the second air pump 42 are started, the control module 5 can obtain the detection values of the second flow meter 34 and the third flow meter 44 in real time, and control the opening degrees of the second valve 33 and the third valve 43 according to the real-time detection flow values, so as to adjust the gas flow values in the air injection pipe 31 and the excitation pipe 41 to appropriate values. For example, when the blockage is more serious, the opening degrees of the second valve 33 and the third valve 43 can be appropriately increased, and thus the gas pressure sprayed by the air injection port 3121 and the vibration force of the excitation pipe 41 are increased, so as to quickly and effectively clean the water outlet hole 111.

[0068] When the first flow meter 24 detects that the flow value of the water supply pipe 21 returns to be greater than the first threshold value, it indicates that the cleaning at the water outlet hole 111 is completed, at this time the first flow meter 24 sends a signal to the control module 5 again, the control module 5 receives the signal and sends an instruction to control the first air pump 32 and the second air pump 42 to close.

[0069] Exemplarily, the first threshold value is 80m 3 / h, when the detection value of the first flow meter 24 is less than or equal to 80m 3 / h, the control module 5 controls the first air pump 32 and the second air pump 42 to automatically open.

[0070] Preferably, the gas pressure sprayed by the air injection port 3121 is 3-6 times of the water pressure in the recharge pipe 1, so that the high-pressure gas can pass through the recharge water in the recharge pipe 1 and be sprayed to the water outlet hole 111. Exemplarily, the recharge water pressure is 0.2-0.4MPa, and the gas pressure sprayed by the air injection port 3121 is 0.8-1.6MPa, which is 4 times of the recharge water pressure.

[0071] The recharge system provided by the embodiment includes the following specific steps during construction:

[0072] W1, fixing the water supply pipe 21, the air injection pipe 31 and the excitation pipe 41 in the recharge pipe 1, and sealing at the connection between the water supply pipe 21, the air injection pipe 31 and the excitation pipe 41 and the upper sealing plate 12;

[0073] W2, using a drilling device to drill a plurality of holes with a required depth on the ground 100, with a hole diameter of 300-400mm, lowering the recharge pipe 1 with pre-assembly completed in each hole, and using sand or raw slurry for backfilling, and the spacing between a plurality of holes is set according to the actual recharge amount requirement;

[0074] W3, after the pipe is lowered hole by hole, connecting the water supply pipe 21, the air injection pipe 31 and the excitation pipe 41 with the water pump set 22, the first air pump 32 and the second air pump 42 respectively, at the same time, installing corresponding valves and flow meters, and connecting each component with the control module 5.

[0075] After the system debugging is completed, the recharge operation can be performed.

[0076] As shown in Figure 3 The embodiment also provides a recharge system control method, which is controlled by using the recharge system as described above, and specifically includes the following steps:

[0077] S1, detecting the water flow in the water supply pipe 21.

[0078] Specifically, the water flow in the water supply pipe 21 is detected by the first flow meter 24.

[0079] S2, if the water flow is less than or equal to the first threshold value, gas is introduced into the air injection pipe 31 to make the gas sprayed through the air injection port 3121 to the water outlet hole 111 and make the vibration pipe 41 vibrate to shake the water outlet hole 111; otherwise, stop introducing gas into the air injection pipe 31 and stop the vibration of the vibration pipe 41.

[0080] Specifically, in step S2, the first air pump 32 and the second air pump 42 are controlled by the control module 5 to start to make the air injection port 3121 of the air injection pipe 31 spray high-pressure gas and make the vibration pipe 41 vibrate to clean the silt at the water outlet hole 111.

[0081] When the water flow in the water supply pipe 21 recovers to be greater than the first threshold value, the introduction of gas into the air injection pipe 31 is stopped and the vibration of the vibration pipe 41 is stopped. The recharge system control method can intelligently and efficiently clean the blockage in real time during the recharge process, ensuring the recharge efficiency.

[0082] It should be noted that when the recharge system is started, all the above operations are controlled by the control module 5 to realize full-automatic control, reduce human intervention, and improve the intelligence and efficiency of recharge.

[0083] Obviously, the above embodiments of the present application are only examples for clarity, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of the present application. It is not necessary or possible to exhaust all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principles of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A reinjection system, characterized in that, include: The reinjection pipe (1) includes a pipe body (11) and an upper sealing plate (12) and a lower sealing plate (13) sealed at the end of the pipe body (11). The pipe body (11) is buried underground, and the side wall of the pipe body (11) is provided with a plurality of water outlet holes (111) at intervals. The water supply module (2) includes a water supply pipe (21), which seals through the upper sealing plate (12) and extends into the pipe body (11); The jet module (3) includes a jet pipe (31), which seals through the upper sealing plate (12) and extends into the pipe body (11). The jet pipe (31) is provided with a plurality of jet ports (3121) at intervals along its extension direction. The vibration module (4) includes a vibration tube (41), which is sealed through the upper sealing plate (12) and abuts against the inner wall of the tube body (11) to transmit vibration to the tube body (11). The recharge pipe (1) is provided with the water outlet (111) within the range of underground depth H1 to underground depth H2, where H1≤H2; The jet pipe (31) includes a first straight pipe section (311) and a first spiral pipe section (312). The upper end of the first spiral pipe section (312) corresponds to the underground depth D1, and the lower end of the first spiral pipe section (312) corresponds to the underground depth D2. D1≤H1, D2≥H2, and a plurality of jet nozzles (3121) are opened on the first spiral pipe section (312). The excitation pipe (41) includes a second straight pipe section (411) and a second spiral pipe section (412). The second spiral pipe section (412) is coiled on the inner wall of the reinjection pipe (1). The upper end of the second spiral pipe section (412) corresponds to the underground depth L1, and the lower end of the second spiral pipe section (412) corresponds to the underground depth L2. L1≤H1, L2≥H2.

2. The reinjection system according to claim 1, characterized in that, The water supply module (2) also includes a water pump unit (22), the inner cavity of which is connected to the water supply pipe (21). The jet module (3) also includes a first air pump (32), the inner cavity of which is connected to the jet pipe (31). The vibration module (4) also includes a second air pump (42), the vibration pipe (41) is a closed structure, and the inner cavity of the second air pump (42) is connected to the vibration pipe (41) to circulate and pump the gas in the vibration pipe (41).

3. The reinjection system according to claim 2, characterized in that, The water supply pipe (21) is equipped with a first valve (23), the jet pipe (31) is equipped with a second valve (33), and the excitation pipe (41) is equipped with a third valve (43).

4. The reinjection system according to claim 3, characterized in that, A first flow meter (24) is also installed on the water supply pipe (21), which is used to detect and record the flow rate in the water supply pipe (21); A second flow meter (34) is also provided on the jet pipe (31), which is used to detect and record the gas flow rate in the jet pipe (31); A third flow meter (44) is also provided on the excitation tube (41), which is used to detect and record the gas flow rate in the excitation tube (41).

5. The reinjection system according to claim 4, characterized in that, The reinjection system also includes a control module (5), which is communicatively connected to the water pump unit (22), the first air pump (32), the second air pump (42), the first valve (23), the second valve (33), the third valve (43), the first flow meter (24), the second flow meter (34), and the third flow meter (44); The control module (5) can control the first air pump (32) and the second air pump (42) to start when the detection value of the first flow meter (24) is less than or equal to the first threshold.

6. The reinjection system according to any one of claims 1-5, characterized in that, The pressure of the gas ejected from the jet nozzle (3121) is 3 to 6 times the water pressure in the reinjection pipe (1).

7. The reinjection system according to any one of claims 1-5, characterized in that, The pipe body (11) is made of steel pipe, the water supply pipe (21) is made of one of polyethylene pipe, polypropylene pipe and polybutene pipe, and the jet pipe (31) and the excitation pipe (41) are both made of flexible material.

8. A control method for a reinjection system, characterized in that, Controlling the reinjection system as described in any one of claims 1-7 includes the following steps: Detect the water flow rate in the water supply pipe (21); If the water flow rate is less than or equal to the first threshold, gas is introduced into the jet pipe (31) so that the gas is sprayed through the jet port (3121) to the water outlet (111) and the excitation pipe (41) vibrates to clean the water outlet (111); otherwise, the gas is introduced into the jet pipe (31) and the vibration of the excitation pipe (41) is stopped.

Images