A grouting control system for composite barrel foundation

Abstract

The present invention provides a grouting control system for a composite barrel foundation, and relates to the field of composite barrel grouting. The grouting control system includes a slurry barrel, a composite barrel, a slurry inlet pipeline, and a control host. The slurry inlet pipeline is connected between the slurry port of the slurry barrel and the slurry inlet of the composite barrel, and the slurry barrel is also connected to a density sensor; an inner baffle is provided in the composite barrel at the lower side of the slurry inlet, and a material drop interval is reserved between the edge of the inner baffle and the inner wall of the composite barrel, and an underwater camera is also installed on the inner wall of the composite barrel; a slurry pump, a slurry inlet flowmeter, and a slurry inlet valve are installed in the slurry inlet pipeline, and a drainage pipeline is also connected between the composite barrel and the slurry barrel, and a drainage pressure sensor, a drainage valve, and a drainage flowmeter are installed in the drainage pipeline; a return slurry port is provided at the lower part of the composite barrel, and a return slurry pipeline is connected between the return slurry port and the drainage pipeline; the control host is electrically connected to the density sensor, the slurry pump, the slurry inlet flowmeter, the underwater camera, the drainage pressure sensor, and the drainage flowmeter, respectively.

Description

Technical Field

[0001] The invention relates to the technical field of composite tube grouting, in particular to a grouting control system for a composite tube foundation. Background Art

[0002] With the development of wind power technology, offshore wind power has gradually become an important form of renewable energy generation. There are many types of offshore wind power foundations, among which the composite cylindrical foundation can form a close connection with the seabed, effectively ensuring the stability of offshore wind turbine operation.

[0003] For example, a Chinese utility model patent with authorization announcement number CN216339555U and authorization announcement date 2022.04.19 discloses a suction tube conductor frame foundation grouting device, which specifically includes a terminal panel fixed on the conductor frame of the suction tube conductor frame foundation, multiple groups of grouting pipelines, and multiple slurry density monitoring instruments; one end of each group of grouting pipelines is connected to the terminal panel, and the other end extends along the conductor frame of the suction tube conductor frame foundation to a suction tube; the top surface of the suction tube is provided with at least two grouting ports and at least one grouting outlet; each group of grouting pipelines includes at least two grouting main pipes, each of which is connected to a grouting port; each slurry density monitoring instrument is arranged on a grouting outlet to measure the density of the slurry discharged from the grouting outlet. One end of the grouting joint on the terminal panel is connected to the grouting main pipe, and the other end is open to an external slurry supply device.

[0004] The existing suction tube jacket foundation grouting device is designed with multiple grouting pipes to grout each suction tube, which can improve the grouting efficiency and uniformity and ensure the density of the grouting. However, during the grouting operation, it is impossible to monitor the grouting quality and the grouting condition inside the foundation in real time, the stability of the grouting construction is poor, and there is a risk of penetration damage, and the grouting may enter the soil layer. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a grouting control system for a composite barrel foundation, so as to solve the problems that during the grouting operation, the quality of the slurry and the grouting condition inside the foundation cannot be monitored in real time, the stability of the grouting construction is poor, there is a risk of penetration and damage, and the slurry may enter the soil layer.

[0006] The technical solution of the grouting control system of the composite barrel foundation of the present invention is:

[0007] The grouting control system of the composite barrel foundation comprises a slurry barrel, a composite barrel, a slurry inlet pipeline and a control host, wherein the slurry barrel is provided with a slurry port, the upper part of the composite barrel is provided with a slurry inlet, the slurry inlet pipeline is connected between the slurry port and the slurry inlet, and the slurry barrel is also connected with a density sensor;

[0008] The composite cylinder is provided with an inner baffle located at the lower side of the slurry inlet, and a material drop interval is reserved between the edge of the inner baffle and the inner wall of the composite cylinder, so that the slurry can enter the lower part of the composite cylinder through the upper surface of the inner baffle. The inner wall of the composite cylinder is also equipped with an underwater camera;

[0009] The slurry inlet pipeline is installed with a slurry pump, a slurry inlet flowmeter and a slurry inlet valve. A drainage pipeline is also connected between the composite cylinder and the slurry barrel. A drainage pressure sensor, a drainage valve and a drainage flowmeter are installed on the drainage pipeline.

[0010] A return slurry port is provided at the lower part of the composite cylinder, a return slurry pipeline is connected between the return slurry port and the drainage pipeline, and a return slurry valve is installed on the return slurry pipeline; the control host is electrically connected to the density sensor, the slurry pump, the slurry inlet flowmeter, the underwater camera, the drainage pressure sensor and the drainage flowmeter respectively.

[0011] Furthermore, an outer top cover is sealed and installed on the upper part of the composite cylinder, the outer top cover and the inner baffle are arranged in an upper and lower interval, and a support is fixedly connected between the inner baffle and the outer top cover;

[0012] The slurry inlet is provided on the outer top cover, and the slurry inlet is in sealed communication with the slurry inlet pipeline. The outer top cover is also provided with a drain outlet, and the drain outlet is in sealed communication with the drain pipeline.

[0013] Furthermore, there are two underwater cameras, namely a first underwater camera and a second underwater camera. The first underwater camera corresponds to the outer side of the inner baffle, and the second underwater camera is located on the inner lower side of the composite tube.

[0014] Furthermore, a slurry pressure sensor is also provided inside the composite cylinder. The slurry pressure sensor is located on the lower side of the inner baffle. The control host is electrically connected to the slurry pressure sensor. The slurry pressure sensor is used to detect the slurry pressure inside the composite cylinder and send the slurry pressure signal to the control host.

[0015] Furthermore, a immersion type liquid level sensor is installed inside the composite cylinder, and the immersion type liquid level sensor is used to detect the liquid level height inside the composite cylinder and send a liquid level signal to the control host.

[0016] Furthermore, it also includes a water bucket and a raw material bucket, a water inlet pipe is connected between the water bucket and the slurry bucket, a cement pipe is connected between the raw material bucket and the slurry bucket, a water inlet valve is installed on the water inlet pipe, a cement valve is installed on the cement pipe, and the control host is electrically connected to the water inlet valve and the cement valve respectively.

[0017] Furthermore, during the grouting stage, the control host controls the water inlet valve, the cement valve, the slurry inlet valve and the drainage valve to be opened, and controls the slurry return valve to be closed;

[0018] During the slurry return stage, the control host controls the water inlet valve, the slurry inlet valve and the slurry return valve to open, and controls the cement valve and the drainage valve to close.

[0019] Furthermore, the slurry inlet valve, the drainage valve, the slurry return valve, the water inlet valve and the cement valve are all electric valves.

[0020] Furthermore, an emergency pipeline is connected between the slurry inlet pipeline and the drainage pipeline, a manual emergency valve is installed on the emergency pipeline, and one end of the emergency pipeline is connected to the slurry inlet pipeline between the slurry inlet valve and the composite cylinder, and the other end of the emergency pipeline is connected to the drainage pipeline corresponding to the downstream position of the drainage flow meter.

[0021] Furthermore, the density sensor is a differential pressure density sensor, which is used to detect the slurry density in the slurry barrel in real time and send a density signal to the control host. The control host is used to obtain the water-cement ratio based on the density data analysis to adjust the water intake and cement amount of the slurry barrel in real time.

[0022] Beneficial effects: The grouting control system of the composite barrel foundation adopts a design form of a slurry barrel, a composite barrel, a slurry inlet pipeline and a control host. The slurry inlet pipeline is connected between the slurry port of the slurry barrel and the slurry inlet of the composite barrel. A drainage pipeline is also connected between the composite barrel and the slurry barrel, and a return slurry pipeline is connected between the return slurry port of the composite barrel and the drainage pipeline.

[0023] During grouting, the control host controls the slurry inlet valve and the drainage valve to open, starts the slurry pump to deliver the slurry to the slurry inlet, and the slurry falls on the upper surface of the inner baffle, and then flows to the bottom of the composite tube through the drop gap between the inner baffle and the composite tube, effectively extending the length of the penetration path, reducing the risk of penetration damage, and ensuring the grouting quality of the entire system. In addition, during grouting, the water in the composite tube is discharged through the drainage pipeline, effectively balancing the pressure inside and outside the tube.

[0024] The control host is electrically connected to the density sensor, slurry pump, slurry flow meter, underwater camera, drainage pressure sensor and drainage flow meter. The water-cement ratio of the slurry is detected by the density sensor. The underwater camera can obtain the grouting process in real time. The drainage pressure sensor and drainage flow meter are combined to obtain the drainage of the composite tube, so as to achieve the purpose of comprehensive monitoring of the slurry quality and grouting conditions and improve the stability of grouting construction. When the slurry is returned, the drainage valve is closed and the return valve is opened. The slurry discharge operation is realized by water entering the slurry pipeline, which ensures the functionality and automation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a grouting control system for a composite barrel foundation in a specific embodiment of the grouting control system of the composite barrel foundation of the present invention;

[0026] Figure 2 It is a cross-sectional schematic diagram of a composite tube in a specific embodiment of a grouting control system of a composite tube foundation of the present invention.

[0027] In the figure: 1 - slurry barrel, 10 - density sensor, 11 - water barrel, 12 - raw material barrel, 13 - water inlet valve;

[0028] 2-composite cylinder, 21-inner baffle, 22-underwater camera, 23-pillar, 24-slurry pressure sensor, 25-immersible liquid level sensor;

[0029] 3-slurry inlet pipeline, 31-slurry pump, 32-slurry inlet flowmeter, 33-slurry inlet valve, 4-control host;

[0030] 5 - drainage pipeline, 51 - drainage pressure sensor, 52 - drainage valve, 53 - drainage flow meter, 6 - return slurry pipeline, 61 - return slurry valve, 7 - emergency pipeline, 71 - manual emergency valve. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] A specific embodiment 1 of the grouting control system of the composite barrel foundation of the present invention is as follows: Figure 1 , Figure 2As shown, the grouting control system of the composite barrel foundation includes a slurry barrel 1, a composite barrel 2, a slurry inlet pipeline 3 and a control host 4. The slurry barrel 1 is provided with a slurry port, the upper part of the composite barrel 2 is provided with a slurry inlet, the slurry inlet pipeline 3 is connected between the slurry port of the slurry barrel 1 and the slurry inlet of the composite barrel 2, and the slurry barrel 1 is also connected to a density sensor 10; the interior of the composite barrel 2 is provided with an inner baffle plate 21 located at the lower side of the slurry inlet, and a material dropping interval is reserved between the edge of the inner baffle plate 21 and the inner wall of the composite barrel 2, so that the slurry can enter the lower part of the composite barrel 2 through the upper surface of the inner baffle plate 21, and an underwater camera 22 is also installed on the inner wall of the composite barrel 2.

[0033] A slurry pump 31, a slurry flowmeter 32 and a slurry valve 33 are installed on the slurry inlet pipeline 3. A drainage pipeline 5 is also connected between the composite cylinder 2 and the slurry barrel 1, and a drainage pressure sensor 51, a drainage valve 52 and a drainage flowmeter 53 are installed on the drainage pipeline 5; a return slurry port is provided at the lower part of the composite cylinder 2, and a return slurry pipeline 6 is connected between the return slurry port and the drainage pipeline 5, and a return slurry valve 61 is installed on the return slurry pipeline 6; the control host 4 is electrically connected to the density sensor 10, the slurry pump 31, the slurry flowmeter 32, the underwater camera 22, the drainage pressure sensor 51 and the drainage flowmeter 53 respectively.

[0034] The grouting control system of the composite barrel foundation adopts the design form of a slurry barrel 1, a composite barrel 2, a slurry inlet pipeline 3 and a control host 4. The slurry inlet pipeline 3 is connected between the slurry port of the slurry barrel 1 and the slurry inlet of the composite barrel 2. A drainage pipeline 5 is also connected between the composite barrel 2 and the slurry barrel 1, and a return slurry pipeline 6 is connected between the return slurry port of the composite barrel 2 and the drainage pipeline 5. During the grouting operation, the control host 4 controls the slurry inlet valve 33 and the drainage valve 52 to open, and starts the slurry pump 31 to transport the slurry to the slurry inlet. The slurry falls on the upper surface of the inner baffle 21, and then flows to the bottom of the composite barrel 2 through the drop interval between the inner baffle 21 and the composite barrel 2, which effectively extends the length of the infiltration path, reduces the risk of infiltration damage, and ensures the grouting quality of the entire system. In addition, during grouting, the water in the composite barrel 2 is discharged through the drainage pipeline 5, which effectively balances the pressure inside and outside the barrel.

[0035] The control host 4 is electrically connected to the density sensor 10, the slurry pump 31, the slurry flow meter 32, the underwater camera 22, the drainage pressure sensor 51 and the drainage flow meter 53 respectively. The water-cement ratio of the slurry is detected by the density sensor 10. The underwater camera 22 can obtain the grouting process picture in real time. The drainage pressure sensor 51 and the drainage flow meter 53 are combined to obtain the drainage of the composite tube 2 outward, so as to achieve the purpose of comprehensively monitoring the slurry quality and grouting conditions, and improve the stability of the grouting construction. When returning to the slurry, the drainage valve 52 is closed and the return slurry valve 61 is opened, and the slurry discharge operation is realized by the water entering the slurry pipeline 3, which ensures the functionality and automation of the system.

[0036] In this embodiment, an outer top cover 20 is sealed and installed on the upper part of the composite cylinder 2, and the outer top cover 20 and the inner baffle 21 are arranged in an upper and lower interval, and a support 23 is fixedly connected between the inner baffle 21 and the outer top cover 20; a slurry inlet is provided on the outer top cover 20, and the slurry inlet is sealed and connected with the slurry inlet pipeline 3, and the outer top cover 20 is also provided with a drainage port, and the drainage port is sealed and connected with the drainage pipeline 5. Since the composite cylinder 2 is a closed structure, during the grouting process, the water inside the composite cylinder 2 is discharged through the drainage pipeline 5, thereby playing a role in balancing the internal and external pressures of the composite cylinder 2.

[0037] The composite cylinder adopts a double cover plate design, and the radial dimension of the inner baffle plate 21 is any multiple between 0.7 and 0.9 times the radial dimension of the outer top cover 20. The inner baffle plate 21 is welded and fixed to the lower side of the outer top cover 20 by four pillars 23. The slurry enters from the slurry inlet of the outer top cover 20 through the slurry inlet pipeline 3, flows downward to the upper side of the inner baffle plate 21, and then flows downward to the bottom of the composite cylinder 2 through the blanking interval between the inner baffle plate 21 and the composite cylinder 2. During the sinking period, the length of the infiltration path is extended, and the risk of infiltration damage is reduced. After sinking to the predetermined depth, the pressure of the soil in the cylinder is strengthened by vacuum preloading.

[0038] There are two underwater cameras 22, namely, a first underwater camera and a second underwater camera. The first underwater camera corresponds to the outer side of the inner baffle 21, and the second underwater camera is located at the lower side of the inner part of the composite tube 2. Specifically, the underwater camera 22 is a pinhole camera, which can shoot the grouting process in the tube in real time, upload it to the control host 4, and remotely transmit it to the mobile terminal device through the control host 4, so that the technicians can monitor it remotely.

[0039] In addition, a slurry pressure sensor 24 is also provided inside the composite cylinder 2. The slurry pressure sensor 24 is located on the lower side of the inner baffle 21. The control host 4 is electrically connected to the slurry pressure sensor 24. The slurry pressure sensor 24 is used to detect the slurry pressure inside the composite cylinder 2 and send the slurry pressure signal to the control host 4. A drop-in liquid level sensor 25 is also installed inside the composite cylinder 2. The drop-in liquid level sensor 25 is used to detect the liquid level inside the composite cylinder 2 and send the liquid level signal to the control host 4. In the composite cylinder 2, the slurry pressure sensor 24 detects the slurry pressure, the drop-in liquid level sensor 25 detects the liquid level, and the control host 4 receives the slurry pressure signal and the liquid level signal, thereby comprehensively acquiring various grouting parameters in the composite cylinder 2.

[0040] In this embodiment, the grouting control system of the composite barrel foundation also includes a water bucket 11 and a raw material bucket 12. A water inlet pipe is connected between the water bucket 11 and the slurry bucket 1, a cement pipe is connected between the raw material bucket 12 and the slurry bucket 1, a water inlet valve 13 is installed on the water inlet pipe, a cement valve is installed on the cement pipe, and the control host 4 is electrically connected to the water inlet valve 13 and the cement valve respectively. The water inlet flow rate is adjusted by controlling the opening of the water inlet valve 13, and the cement flow rate is adjusted by controlling the opening of the cement valve, so that the water-cement ratio in the slurry bucket 1 meets the set requirements.

[0041] During the grouting stage, the control host 4 controls the water inlet valve 13, cement valve, slurry inlet valve 33 and drainage valve 52 to be opened, and controls the return slurry valve 61 to be closed; during the return slurry stage, the control host 4 controls the water inlet valve 13, slurry inlet valve 33 and return slurry valve 61 to be opened, and controls the cement valve and drainage valve 52 to be closed. In addition, the slurry inlet valve 33, drainage valve 52, return slurry valve 61, water inlet valve 13 and cement valve are all electric valves.

[0042] An emergency pipeline 7 is connected between the slurry inlet pipeline 3 and the drainage pipeline 5, and a manual emergency valve 71 is installed on the emergency pipeline 7. One end of the emergency pipeline 7 is connected to the slurry inlet pipeline 3 between the slurry inlet valve 33 and the composite tube 2, and the other end of the emergency pipeline 7 is connected to the downstream position of the drainage flow meter 53 corresponding to the drainage pipeline 5. During normal operation, the manual emergency valve 71 is in a closed state. When the pipeline system has an automatic control failure, the manual emergency valve 71 is manually operated to open the emergency pipeline 7 to stabilize the grouting pressure.

[0043] In addition, the density sensor 10 is a differential pressure density sensor, which is used to detect the density of the slurry in the slurry barrel 1 in real time, and send the density signal to the control host 4, which is used to analyze the water-cement ratio according to the density data, and adjust the water intake and cement amount of the slurry barrel 1 in real time. According to the density signal detected by the differential pressure density sensor, the control host 4 can analyze the water-cement ratio data, and then control the opening of the water inlet valve 13 and the cement valve to adjust the flow ratio of the water intake and cement, so that the water-cement ratio in the slurry barrel 1 meets the set requirements.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A grouting control system for a composite barrel foundation, characterized in that: It comprises a slurry barrel, a composite barrel, a slurry inlet pipeline and a control host, wherein the slurry barrel is provided with a slurry port, the upper part of the composite barrel is provided with a slurry inlet, the slurry inlet pipeline is connected between the slurry port and the slurry inlet, and the slurry barrel is also connected with a density sensor; The composite cylinder is provided with an inner baffle located at the lower side of the slurry inlet, and a material drop interval is reserved between the edge of the inner baffle and the inner wall of the composite cylinder, so that the slurry can enter the lower part of the composite cylinder through the upper surface of the inner baffle. The inner wall of the composite cylinder is also equipped with an underwater camera; The slurry inlet pipeline is installed with a slurry pump, a slurry inlet flowmeter and a slurry inlet valve. A drainage pipeline is also connected between the composite cylinder and the slurry barrel. A drainage pressure sensor, a drainage valve and a drainage flowmeter are installed on the drainage pipeline. A return slurry port is provided at the lower part of the composite cylinder, a return slurry pipeline is connected between the return slurry port and the drainage pipeline, and a return slurry valve is installed on the return slurry pipeline; the control host is electrically connected to the density sensor, the slurry pump, the slurry feed flowmeter, the underwater camera, the drainage pressure sensor and the drainage flowmeter respectively; An outer top cover is sealed and installed on the upper part of the composite cylinder, the outer top cover and the inner baffle are arranged in an upper and lower interval, and a support is fixedly connected between the inner baffle and the outer top cover; The slurry inlet is provided on the outer top cover, and the slurry inlet is in sealed communication with the slurry inlet pipeline. The outer top cover is also provided with a drain outlet, and the drain outlet is in sealed communication with the drain pipeline.

2. The grouting control system of the composite barrel foundation according to claim 1 is characterized in that: The underwater cameras are provided with two, namely a first underwater camera and a second underwater camera. The first underwater camera corresponds to the outer side of the inner baffle, and the second underwater camera is located on the inner lower side of the composite tube.

3. The grouting control system of the composite barrel foundation according to claim 1 is characterized in that: A slurry pressure sensor is also provided inside the composite cylinder. The slurry pressure sensor is located on the lower side of the inner baffle. The control host is electrically connected to the slurry pressure sensor. The slurry pressure sensor is used to detect the slurry pressure inside the composite cylinder and send a slurry pressure signal to the control host.

4. The grouting control system of the composite barrel foundation according to claim 1 is characterized in that: A immersion type liquid level sensor is also installed inside the composite cylinder, and the immersion type liquid level sensor is used to detect the liquid level height inside the composite cylinder and send a liquid level signal to the control host.

5. The grouting control system of the composite barrel foundation according to claim 1 is characterized in that: It also includes a water bucket and a raw material bucket, a water inlet pipe is connected between the water bucket and the slurry bucket, a cement pipe is connected between the raw material bucket and the slurry bucket, a water inlet valve is installed on the water inlet pipe, a cement valve is installed on the cement pipe, and the control host is electrically connected to the water inlet valve and the cement valve respectively.

6. The grouting control system of the composite barrel foundation according to claim 5 is characterized in that During the grouting stage, the control host controls the water inlet valve, the cement valve, the slurry inlet valve and the drainage valve to be opened, and controls the slurry return valve to be closed; During the slurry return stage, the control host controls the water inlet valve, the slurry inlet valve and the slurry return valve to open, and controls the cement valve and the drainage valve to close.

7. The grouting control system of the composite barrel foundation according to claim 6 is characterized in that: The slurry inlet valve, the drainage valve, the slurry return valve, the water inlet valve and the cement valve are all electric valves.

8. The grouting control system of the composite barrel foundation according to claim 1 is characterized in that: An emergency pipeline is connected between the slurry inlet pipeline and the drainage pipeline, and a manual emergency valve is installed on the emergency pipeline. One end of the emergency pipeline is connected to the slurry inlet pipeline between the slurry inlet valve and the composite cylinder, and the other end of the emergency pipeline is connected to the drainage pipeline corresponding to the downstream position of the drainage flow meter.

9. The grouting control system of the composite barrel foundation according to claim 1 is characterized in that: The density sensor is a differential pressure density sensor, which is used to detect the slurry density in the slurry barrel in real time and send a density signal to the control host. The control host is used to obtain the water-cement ratio based on the density data analysis to adjust the water intake and cement amount of the slurry barrel in real time.

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