An underwater deep cement mixing ship buffer tank flushing anti-backflow system and mixing ship

Abstract

The utility model relates to underwater deep cement mixing ship technical field, especially underwater deep cement mixing ship buffer tank flushing anti backwash system and mixing ship, wherein the anti backwash system includes buffer tank and with buffer tank intercommunication's water pipe line and gas pipe line, is equipped with water storage tank on gas pipe line, and the lower part of water storage tank is connected with the drain line, is equipped with first drain valve on the drain line. The underwater deep cement mixing ship buffer tank flushing anti backwash system of the utility model, through adding water storage tank on gas pipe line, water storage tank can be used for temporarily storing backwash water, to a certain extent, prevent water from entering the main gas pipe, be favorable to the protection each gas valve less to be subjected to water corrosion, thereby improve the service life of system, the lower part of water storage tank is equipped with the drain line and first drain valve, can open first drain valve to backwash water and timely discharge.

Description

Technical Field

[0001] This utility model relates to the technical field of underwater deep-sea cement mixing vessels, and in particular to a buffer tank flushing and anti-backflow system for underwater deep-sea cement mixing vessels and the mixing vessel itself. Background Technology

[0002] The underwater deep cement mixing method originated in the United States and flourished in Japan. In the past decade, this technology has been widely adopted and applied in my country's transportation industry, particularly in soft soil foundation reinforcement. Underwater deep cement mixing vessels use high-pressure water and air to clean residual cement slurry from pipelines to ensure unobstructed flow. However, in current practices, the flushing water pipes and air pipes are connected. During flushing, seawater introduced may enter the control valves along the air pipes, causing severe corrosion. Utility Model Content

[0003] The purpose of this invention is to overcome the problem in the prior art that during flushing, seawater may enter the control valves along the air pipes, causing severe corrosion of the valves, and to provide a flushing and anti-backflow system for the buffer tank of an underwater deep-sea cement mixing vessel and the mixing vessel itself.

[0004] In a first aspect, the present invention provides a flushing and anti-backflow system for a buffer tank of an underwater deep cement mixing vessel, comprising a buffer tank and a water pipe and an air pipe connected to the buffer tank, wherein a water storage tank is provided on the air pipe, and a drain pipe is connected to the lower part of the water storage tank, and a first drain valve is provided on the drain pipe.

[0005] The underwater deep-sea cement mixing vessel buffer tank flushing and backflow prevention system of this utility model adds a water storage tank to the air pipe. The water storage tank can be used to temporarily store backflow water, which can prevent water from entering the main air pipe to a certain extent. This helps to protect the air valves from water corrosion and thus improves the service life of the system. The lower part of the water storage tank is equipped with a drain pipe and a first drain valve. The backflow water can be discharged in time by opening the first drain valve.

[0006] Preferably, the tracheal pipeline includes a first pipeline section and a second pipeline section, both of which are connected to the upper part of the water storage tank, and the second pipeline section is connected to the buffer tank.

[0007] Preferably, a valve is provided on the first pipeline section.

[0008] Preferably, the air pipe is connected to the upper part of the buffer tank.

[0009] Preferably, a second drain valve is provided on the second pipeline section.

[0010] Preferably, a one-way valve is provided on the second pipeline section. The one-way valve is located on the side of the second drain valve away from the buffer tank, and the one-way valve is connected from the water storage tank to the buffer tank.

[0011] Preferably, at least two of the one-way valves are provided on the second pipeline section.

[0012] Preferably, the first drain valve is a pressure relief valve.

[0013] Preferably, the second drain valve is a pressure relief valve.

[0014] Preferably, the first pipeline section is connected to the deck main air pipe.

[0015] In a second aspect, this utility model provides an underwater deep-sea cement mixing vessel, including a hull and an underwater deep-sea cement mixing vessel buffer tank flushing and anti-backflow system as described above. The hull is provided with a slurry storage tank, a slurry inlet pipe, a mud pump and a slurry outlet pipe connected in sequence. The slurry storage tank is connected to the inlet of the mud pump through the slurry inlet pipe, and the slurry outlet pipe is connected to the outlet of the mud pump. The buffer tank is connected to the slurry outlet pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The underwater deep-sea cement mixing vessel buffer tank flushing and backflow prevention system of this utility model adds a water storage tank to the air pipe. The water storage tank can be used to temporarily store backflow water, which can prevent water from entering the main air pipe to a certain extent. This helps to protect the air valves from water corrosion and thus improves the service life of the system. The lower part of the water storage tank is equipped with a drain pipe and a first drain valve. The backflow water can be discharged in time by opening the first drain valve. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the anti-backflow system of this utility model;

[0019] Figure 2 This is a schematic diagram of the grouting system described in this utility model.

[0020] Marked in the image:

[0021] 1-Buffer tank;

[0022] 2-Water pipes and piping;

[0023] 3-Tracheal tubing;

[0024] 31-First pipeline section; 32-Second pipeline section; 33-Valve; 34-Second drain valve; 35-Check valve;

[0025] 4-Water storage tank;

[0026] 41-Drainage pipe; 42-First drain valve;

[0027] 5-Deck main air pipe;

[0028] 6-Slurry storage tank;

[0029] 7- Grout inlet pipe;

[0030] 8-Mud pump;

[0031] 9-Slurry outlet pipe. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0033] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0035] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0036] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0037] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0038] Example 1

[0039] Underwater deep cement mixing is a technique used for soft soil foundation treatment. It involves forcibly mixing cement slurry or dry powder with the in-situ soil to form cement-soil reinforced piles (or walls) to improve foundation bearing capacity, reduce settlement, or prevent seepage. This method is suitable for underwater or saturated soft soil environments, such as river channels, coastlines, and seabed projects. In practice, it is often implemented using underwater deep cement mixing vessels.

[0040] like Figure 2 As shown, an underwater deep cement mixing vessel grouting system includes a grout storage tank 6, a grout inlet pipe 7, a mud pump 8, and a grout outlet pipe 9 connected in sequence. The grout storage tank 6 is connected to the inlet of the mud pump 8 through the grout inlet pipe 7, and the grout outlet pipe 9 is connected to the outlet of the mud pump 8. The mud pump 8 is used to provide power, and the grout outlet pipe 9 is connected to a nozzle to spray out the mixed grout.

[0041] Considering the fluctuations in the conveying pressure of the mud pump 8, preferably, the grouting system is also equipped with a buffer tank 1, which is connected to the grout outlet pipe 9. The buffer tank 1 is used to stabilize the conveying pressure of cement slurry and regulate flow fluctuations.

[0042] In order to clean the residual cement slurry in the pipeline, the grouting system is also equipped with water pipe 2 and air pipe 3. Both water pipe 2 and air pipe 3 are connected to buffer tank 1. Water pipe 2 can inject high-pressure water into buffer tank 1, and air pipe 3 can inject high-pressure air into buffer tank 1. The high-pressure water and high-pressure air are used to flush the pipelines in the grouting system.

[0043] Since both water pipe 2 and air pipe 3 are connected to buffer tank 1, flushing water can easily enter each control air valve along air pipe 3. Although a drain valve is usually installed in air pipe 3 to prevent backflow of flushing water, flushing water is usually high-pressure water, which can easily exceed the pressure threshold of the drain valve. In addition, since seawater is usually used for flushing water, this will cause severe corrosion of each air valve and significantly reduce the service life of the grouting system.

[0044] To solve the above problems, such as Figure 1 As shown, this embodiment provides a flushing and backflow prevention system for the buffer tank of an underwater deep cement mixing vessel, including a water storage tank 4 installed on the air pipe 3.

[0045] The water storage tank 4 is a sealed structure with an opening for connection to the air pipe 3. During high-pressure water flushing, the seawater flowing into the air pipe 3 can be temporarily stored in the water storage tank 4, thereby preventing seawater from entering the main air pipe to a certain extent and protecting the main air valves.

[0046] To facilitate the discharge of seawater stored in the water storage tank 4, the lower part of the water storage tank 4 is provided with an opening and connected to the drain pipe 41; the drain pipe 41 is provided with a first drain valve 42. Opening the first drain valve 42 can discharge the seawater in the water storage tank 4, and closing the first drain valve 42 can create high pressure in each pipe during flushing.

[0047] In a preferred embodiment, the tracheal tube 3 includes a first tube section 31 and a second tube section 32. Both the first tube section 31 and the second tube section 32 are connected to the upper part of the water storage tank 4, and the second tube section 32 is connected to the buffer tank 1.

[0048] The underwater deep-sea cement mixing vessel buffer tank flushing and backflow prevention system described in this embodiment adds a water storage tank 4 to the air pipe 3. The water storage tank 4 can be used to temporarily store backflowed water, which to a certain extent prevents water from entering the main air pipe, helps protect the air valves from water corrosion, and thus improves the service life of the system. The lower part of the water storage tank 4 is equipped with a drain pipe 41 and a first drain valve 42, which can be opened to drain the backflowed water in a timely manner.

[0049] In some implementations, the first drain valve 42 is a pressure relief valve that can automatically release pressure to protect the system safety when there is overpressure.

[0050] In some embodiments, the water storage tank 4 is made of stainless steel, which has good corrosion resistance and is suitable for seawater immersion.

[0051] In some implementations, the air pipe 3 is connected to the upper part of the buffer tank 1, which helps to reduce the amount of seawater flowing into the air pipe 3.

[0052] In some implementations, the first pipeline section 31 is connected to the deck main air pipe 5.

[0053] To facilitate shutting down the gas line during maintenance, preferably, a valve 33 is provided on the first pipeline section 31; more preferably, the valve 33 is a ball valve; the gas pipeline 3 can be opened or closed by manually closing or opening the valve 33.

[0054] In some embodiments, a second drain valve 34 is provided on the second pipeline section 32; preferably, the second drain valve 34 is a pressure relief valve, which will automatically release pressure to protect the system safety when overpressure occurs.

[0055] In some embodiments, to further prevent seawater backflow, a one-way valve 35 is provided on the second pipeline section 32. The one-way valve 35 is located on the side of the second drain valve 34 away from the buffer tank 1, and the connection direction of the one-way valve 35 is from the water storage tank 4 to the buffer tank 1.

[0056] Preferably, there are at least two check valves 35, at least one of which is located on the upper part of the buffer tank 1 and near the second drain valve 34, and the other at least one is located near the water storage tank 4.

[0057] In this embodiment, the air pipe 3 of the buffer tank 1 and the air control air circuits of each air valve are separated and independent. A water storage tank 4 is installed on the air pipe 3. The water storage tank 4 can play a role in preventing backflow. A valve 33 is added to the air inlet of the water storage tank 4 to facilitate closing the air circuit during maintenance. A one-way valve 35 is added to the air outlet of the water storage tank 4 to prevent seawater backflow. A first drain valve 42 is installed at the bottom of the water storage tank 4 so that even if the one-way valve 35 fails, it can drain water in time.

[0058] Example 2

[0059] This embodiment provides an underwater deep-sea cement mixing vessel, including a hull and an underwater deep-sea cement mixing vessel buffer tank flushing and anti-backflow system as described in Embodiment 1.

[0060] Preferably, such as Figure 2 As shown, the hull is equipped with a slurry storage tank 6, a slurry inlet pipe 7, a mud pump 8, and a slurry outlet pipe 9 connected in sequence. The slurry storage tank 6 is connected to the inlet of the mud pump 8 through the slurry inlet pipe 7, and the slurry outlet pipe 9 is connected to the outlet of the mud pump 8. The buffer tank 1 is connected to the slurry outlet pipe 9.

[0061] More preferably, a flow meter is also provided on the slurry outlet pipe 9.

[0062] More preferably, it also includes a sewage pipeline, one end of which is connected to the slurry outlet pipe 9, and the other end is connected to the sewage area. The sewage pipeline is equipped with a backflow valve, which is a one-way valve, and the connection direction of the backflow valve is from the slurry outlet pipe 9 to the sewage area.

[0063] 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 and improvements 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 flushing and backflow prevention system for a buffer tank of an underwater deep-sea cement mixing vessel, comprising a buffer tank (1) and a water pipe (2) and an air pipe (3) connected to the buffer tank (1), characterized in that, The air pipe (3) is equipped with a water storage tank (4), and the lower part of the water storage tank (4) is connected to a drain pipe (41), and the drain pipe (41) is equipped with a first drain valve (42).

2. The anti-backflow flushing system for the buffer tank of an underwater deep-sea cement mixing vessel according to claim 1, characterized in that, The tracheal tube (3) includes a first tube section (31) and a second tube section (32). Both the first tube section (31) and the second tube section (32) are connected to the upper part of the water storage tank (4), and the second tube section (32) is connected to the buffer tank (1).

3. The anti-backflow flushing system for the buffer tank of an underwater deep-sea cement mixing vessel according to claim 2, characterized in that, A valve (33) is provided on the first pipeline section (31).

4. The anti-backflow flushing system for the buffer tank of an underwater deep-sea cement mixing vessel according to claim 2, characterized in that, The tracheal tube (3) is connected to the upper part of the buffer tank (1).

5. The anti-backflow flushing system for the buffer tank of an underwater deep-sea cement mixing vessel according to claim 2, characterized in that, The second pipeline section (32) is equipped with a second drain valve (34).

6. The anti-backflow flushing system for the buffer tank of an underwater deep-sea cement mixing vessel according to claim 5, characterized in that, The second pipeline section (32) is provided with a one-way valve (35). The one-way valve (35) is located on the side of the second drain valve (34) away from the buffer tank (1). The one-way valve (35) is connected from the water storage tank (4) to the buffer tank (1).

7. The anti-backflow flushing system for the buffer tank of an underwater deep-sea cement mixing vessel according to claim 6, characterized in that, At least two of the aforementioned check valves (35) are provided on the second pipeline section (32).

8. The anti-backflow flushing system for the buffer tank of an underwater deep-sea cement mixing vessel according to claim 5, characterized in that, The first drain valve (42) is a pressure relief valve; the second drain valve (34) is a pressure relief valve.

9. The anti-backflow flushing system for the buffer tank of an underwater deep-sea cement mixing vessel according to any one of claims 2-8, characterized in that, The first pipeline section (31) is connected to the main air pipe (5) on the deck.

10. A deep-sea cement mixing vessel, characterized in that, The system includes a hull and a buffer tank flushing and anti-backflow system for underwater deep-sea cement mixing vessels as described in any one of claims 1-9. The hull is provided with a slurry storage tank (6), a slurry inlet pipe (7), a mud pump (8), and a slurry outlet pipe (9) connected in sequence. The slurry storage tank (6) is connected to the inlet of the mud pump (8) through the slurry inlet pipe (7), and the slurry outlet pipe (9) is connected to the outlet of the mud pump (8). The buffer tank (1) is connected to the slurry outlet pipe (9).

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