Sludge flushing system applied to sluice

Abstract

The silt flushing system comprises a water taking opening, a silt flushing pump set unit, a silt flushing main pipe, a silt flushing branch pipe, a manual silt flushing connector short pipe, a silt flushing hose, an adjusting valve, a silt cutting water gun, a silt guiding water gun, a hose water gun and a maintenance corridor. The water intake is a water intake device of the silt flushing system; the silt flushing pump set unit provides pressure water for the silt flushing system; the silt flushing main pipe conveys pressure water to the silt flushing branch pipe and the manual silt flushing connector short pipe. The silt flushing branch pipe is connected with the silt flushing main pipe, the silt cutting water gun and the silt guiding water gun; the manual silt flushing connector short pipe is connected with the silt flushing main pipe and the silt flushing hose, and adjusting valves are arranged on the silt flushing branch pipe and the manual silt flushing connector short pipe so as to adjust the water amount of each water gun; the silt flushing hose is connected with a hose water gun; the silt cutting water gun is close to the gate and used for dispersing silt; the silt guide water gun is arranged below the maintenance platform and is used for dispersing silt and forming a silt washing water channel; the hose water gun is used for manual silt flushing; and the maintenance corridor is used for checking and maintaining the water gun.

Description

Technical Field

[0001] The utility model relates to a silt flushing system, in particular to a silt flushing system applied to a sluice. Background Art

[0002] The construction of water conservancy projects generally encounters the problem of siltation, especially when constructing water conservancy projects on tidal river sections. The problem of siltation is inevitable because it is very easy to cause siltation between high tide and low tide. Especially for the sluice gates built on the embankments of tidal river sections, the trouble caused by siltation is great. In the process of siltation, the silt will not only become thicker and thicker, but also gradually harden, seriously affecting the safe and stable operation of the gate. When the gate is closed, as the silt gradually accumulates, the gate is deeply buried in the silt. When the gate is to be opened, it will be found that the gate cannot be lifted at all, and it will cause overload damage to the hoist and wire rope; when the gate is open, as the silt gradually accumulates, when the gate is to be closed, it will be found that the silt in the gate slot will cause the gate to be unable to close tightly, and it will cause the gate to wear, rust and deform.

[0003] Although some sluice projects have taken siltation into consideration and designed flushing and silting pipelines during their design, the flushing and silting design schemes are not systematic and comprehensive enough, or the flushing and silting facilities are used without rules and regulations, resulting in flushing and silting effects that are difficult to meet project needs. Utility Model Content

[0004] In order to solve the siltation problem existing in water conservancy projects, especially the siltation problem of sluice projects on tidal river sections, the utility model provides a siltation flushing system applied to sluices, fixed water guns are arranged on the piers on both sides of the sluice, under the maintenance platform and on the tidal side, an artificial siltation flushing interface is arranged on the maintenance platform to connect the hose and the water gun, the sluice is flushed in all directions with the pressurized water in the water gun, and an appropriate siltation flushing system scheduling method is established, so as to systematically solve the siltation problem of the sluice project.

[0005] The technical solution adopted by the utility model is:

[0006] A silt flushing system for a sluice gate comprises a water intake, a silt flushing pump unit, a silt flushing main pipe, a silt flushing branch pipe, a short pipe for an artificial silt flushing interface, a silt flushing hose, a regulating valve, a silt cutting water gun, a silt guiding water gun, a hose water gun and an inspection corridor; the water intake is a device for the silt flushing system to take water from a water source such as a river, and is installed in front of the silt flushing pump unit; the silt flushing pump unit is used to provide pressurized water for the silt flushing system and control the start and stop of the pressurized water pump, the front of the silt flushing pump unit is connected to the water intake through a short pipe, and the rear of the silt flushing pump unit is connected to the silt flushing main pipe; the silt flushing main pipe connects the silt flushing pump unit and the silt flushing branch pipe , which is the main pipe of the silt flushing system; the silt flushing branch pipe connects the silt flushing main pipe and the silt cutting water gun and the silt guiding water gun, and the regulating valve is arranged at the end of the silt flushing branch pipe; the silt cutting water gun is arranged below the piers and the maintenance platform on both sides of the sluice; the silt guiding water gun is arranged below the maintenance platform; the artificial silt flushing interface short pipe connects the silt flushing main pipe and the silt flushing hose, and the regulating valve is arranged at the end of the artificial silt flushing interface short pipe; the silt flushing hose connects the artificial silt flushing interface short pipe and the hose water gun; the maintenance corridor is arranged on the sluice maintenance platform, close to the silt cutting water gun and the silt guiding water gun, for inspecting and repairing the water gun.

[0007] Furthermore, the silt flushing pump unit includes a pressurized water pump, an inlet valve, a check valve, and an outlet valve; the water pressure of the pressurized water pump can be increased when it is started, and the pressurized water pump is arranged between the inlet valve and the check valve. The inlet valve is installed on the inlet pipe of the pressurized water pump, and can cut off the connection with the water source when the pressurized water pump is repaired; the outlet valve is arranged on the outlet pipe of the pressurized water pump, and can cut off the connection with the silt flushing main pipe when the pressurized water pump is repaired; the check valve is installed between the pressurized water pump and the outlet valve, and can automatically close when the pressurized water pump stops, so as to prevent the water in the silt flushing main pipe from flowing back and protect the pressurized water pump from the influence of reverse water flow.

[0008] The silt flushing main pipe conveys the pressurized water generated by the pressure water pump to the silt flushing branch pipe and the artificial silt flushing interface short pipe; the silt flushing branch pipe conveys the pressurized water generated by the pressure water pump to each silt cutting water gun and silt guiding water gun; the silt flushing hose conveys the pressurized water to the hose water gun; the regulating valve adjusts the water volume of the silt cutting water gun, silt guiding water gun and hose water gun; the silt cutting water gun is close to the working gate, and has a large water spraying pressure and water volume, which is used to disperse and entrain the silt deposited in front of the gate to put it in a lifted and suspended state; the silt guiding water gun has a large horizontal component in the water spraying direction, on the one hand, the silt guiding water gun is directed to disperse the nearby silt to form a silt flushing waterway on the silt, and on the other hand, the silt flushing water volume near the gate is brought to the external tidal river section through the silt flushing waterway; the hose water gun is used to artificially flush the silt at the silt flushing dead corners of the silt cutting water gun and the silt guiding water gun; the maintenance corridor is used to inspect and repair the silt cutting water gun and the silt guiding water gun.

[0009] The scheduling method of the utility model includes a fixed siltation height flushing method and a daily regular flushing method. The fixed siltation height flushing method means that when the siltation in front of the gate reaches the starting flushing elevation, the flushing system is turned on to flush the sluice gate until the silt height in front of the gate is reduced to the minimum siltation elevation; the starting flushing elevation and the minimum siltation elevation are determined by comprehensively considering the siltation law and the opening and closing force of the gate hoist. The daily regular flushing method means that the flushing operation is carried out at fixed time intervals, and each flushing is carried out until the silt is at the minimum siltation elevation. The flushing time interval is determined by considering the siltation law and the opening and closing force of the gate hoist.

[0010] Furthermore, the number of the silt-removing water guns, silt-guiding water guns and hose water guns is determined according to the size of the gate and the intensity of silt accumulation. When the gate size is large and the silt accumulation is severe, a larger number of water guns can be selected.

[0011] Furthermore, in order to ensure the silt flushing effect, the design flow rate of each of the silt removal water gun, silt guiding water gun and hose water gun is 2.5-5 L / s.

[0012] Furthermore, the length of the water outlet of the silt-removing water gun buried in the gate pier leaking out of the concrete is 20 to 30 mm.

[0013] Furthermore, the silt-removing water gun buried in the gate pier has a spray angle uniformly directed toward different positions of the silt in front of the gate, so as to impact every area as much as possible.

[0014] Furthermore, the flow rate of the booster water pump is calculated according to the maximum flushing and silting flow rate used in a single flushing and silting.

[0015] Furthermore, the head of the booster pump is calculated according to formula (1):

[0016]

[0017] In formula (1):

[0018] H P is the head of the pressurized water pump;

[0019] Z1 is the elevation of the silt-removing water gun that is farthest from the water source and at the highest position;

[0020] Z2 is the water level of the water source;

[0021] The outlet water velocity head of the silt-removing water gun that is farthest from the water source and at the highest position;

[0022] ∑H W It is the sum of the hydraulic losses in the pipeline from the silt-removing gun, which is the farthest from the water source and has the highest position, to the water source;

[0023] H y It is the residual pressure of scouring and silting.

[0024] Furthermore, in the fixed siltation height scouring and silting mode, for the economy of scouring and silting, the starting scouring and silting elevation should be lower than the average high tide level of the tidal river section; at the same time, in order to ensure that the gate can be opened safely, the starting scouring and silting elevation should be lower than the siltation elevation allowed by the gate hoist to open the gate.

[0025] Furthermore, in the operation and scheduling mode, for the economy of scouring and silting, the minimum siltation elevation is equal to or slightly higher than the average low tide level of the tidal river section; at the same time, in order to ensure that the gate can be opened safely, the minimum siltation elevation should be lower than the siltation elevation allowed by the gate hoist to open the gate, and have a large safety margin.

[0026] Furthermore, in the daily regular flushing and silting method, the flushing and silting interval can be 1 week or half a month, etc., on the one hand to prevent the flushing and silting water pump from being damaged by moisture, and on the other hand to prevent the silt from long-term accumulation and hardening and difficult to handle.

[0027] Furthermore, for the scheduling and operation of the flushing and silting system of a specific sluice project, the fixed siltation height flushing and silting method and the daily regular flushing and silting method can be used in combination to ensure the safe opening and closing of the gates and the flushing and silting effect of the flushing and silting system.

[0028] The beneficial effects of the utility model are:

[0029] The utility model can carry out all-round flushing and silting for the gate, greatly improving the flushing and silting effect and preventing the gate from being unable to be opened and closed due to silt accumulation; at the same time, the operation and scheduling method of the utility model improves the economy of the flushing and silting operation and prevents the flushing and silting system equipment from being damaged by moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is the system principle diagram of the utility model;

[0031] Figure 2 It is the overall plan layout of the utility model;

[0032] Figure 3 It is a detailed layout drawing of the single-hole gate scouring and silting facility of the utility model;

[0033] Figure 4 for Figure 3 AA section view;

[0034] Figure 5 for Figure 3 BB cross-sectional view;

[0035] Figure 6 for Figure 3 CC cross-sectional view.

[0036] In the figure: 1. Water intake, 2. Silt flushing pump unit, 3. Silt flushing main pipe, 4. Silt flushing branch pipe, 5. Short pipe for artificial silt flushing interface, 6. Silt flushing hose, 7. Regulating valve, 8. Silt cutting water gun, 9. Silt guiding water gun, 10. Hose water gun, 11. Maintenance corridor, 12. Pressure water pump, 13. Inlet valve, 14. Check valve, 15. Outlet valve, 16. Gate pier, 17. Maintenance platform, 18. Gate, 19. Silt flushing waterway, 20. Starting silt flushing elevation, 21. Minimum siltation elevation. DETAILED DESCRIPTION

[0037] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] like Figures 1 to 6 As shown, the utility model is a silt flushing system applied to a sluice gate and a dispatching method thereof, comprising a water intake 1, a silt flushing pump unit 2, a silt flushing main pipe 3, a silt flushing branch pipe 4, an artificial silt flushing interface short pipe 5, a silt flushing hose 6, a regulating valve 7, a silt cutting water gun 8, a silt guiding water gun 9, a hose water gun 10, and an inspection corridor 11.

[0039] The water intake 1 is a device for the flushing and silting system to take water from a water source such as a river, and is installed in front of the flushing and silting pump unit 2.

[0040] The silt flushing pump unit 2 is used to provide pressurized water for the silt flushing system and control the start and stop of the booster water pump 12. The front is connected to the water intake 1 through the water inlet pipe, and the back is connected to the silt flushing main pipe 3. The silt flushing pump unit 2 consists of a booster water pump 12, an inlet valve 13, a check valve 14, and an outlet valve 15. The booster water pump 12 can increase the water pressure when it is started, and is used to provide pressurized water for the silt flushing system. It is installed between the inlet valve 13 and the check valve 14. The inlet valve 13 is installed on the inlet pipe of the booster water pump 12, and can cut off the connection with the water source when the booster water pump 12 is overhauled. The outlet valve 15 is installed on the outlet pipe of the booster water pump 12, and can cut off the connection with the silt flushing main pipe 3 when the booster water pump 12 is overhauled. The check valve 14 is installed between the booster water pump 12 and the outlet valve 15, and can be automatically closed when the booster water pump 12 stops pumping, to prevent the water in the flushing and silting main pipe 3 from flowing back, and protect the booster water pump 12 from the influence of reverse water flow.

[0041] The design flow rate of the booster pump 12 is calculated according to the maximum flushing flow rate used by the flushing system for a single flushing. The head of the booster pump 12 is calculated according to formula (1):

[0042]

[0043] In formula (1):

[0044] H P is the head of the pressure water pump 12;

[0045] Z1 is the elevation of the silt-removing water gun 8 which is farthest from the water source and at the highest position;

[0046] Z2 is the water level of the water source;

[0047] The outlet water flow velocity and water head of the silt-removing water gun 8 which is the farthest from the water source and at the highest position;

[0048] ∑H W The sum of the hydraulic losses of the pipeline from the silt-removing water gun 8, which is the farthest from the water source and has the highest position, to the water source;

[0049] H y It is the residual pressure of scouring and silting.

[0050] The silt flushing main pipe 3 is used to connect the silt flushing pump unit 2 and the silt flushing branch pipe 4. It is the main pipe of the silt flushing system and transports the pressurized water generated by the booster water pump 12 to the silt flushing branch pipe 4 and the artificial silt flushing interface short pipe 5.

[0051] The silt flushing branch pipe 4 is used to connect the silt flushing main pipe 3 to the silt cutting water gun 8 and the silt guiding water gun 9, and a regulating valve 7 is arranged on it to convey pressurized water to each silt cutting water gun 8 and the silt guiding water gun 9.

[0052] The short pipe 5 of the artificial silt flushing interface is used to connect the silt flushing main pipe 3 and the silt flushing hose 6, and a regulating valve 7 is arranged on it.

[0053] The silt flushing hose 6 is connected to the artificial silt flushing interface short tube 5 and the hose water gun 10 , and is used to deliver pressurized water to the hose water gun 10 .

[0054] The regulating valve 7 is installed on the silt flushing branch pipe 4 and the short pipe 5 for the artificial silt flushing interface, and is used to adjust the water volume of each silt cutting water gun 8, silt guiding water gun 9 and hose water gun 10.

[0055] The silt-removing water gun 8 is connected to the silt-removing branch pipe 4 and is arranged below the gate piers 16 and the maintenance platform 17 on both sides of the sluice gate, close to the gate 18, with large water spraying pressure and water volume, and is used to disperse and entrain the silt deposited in front of the gate 18, so that it is in a state of lifting and suspension. The length of the concrete leaking out of the water spray port of the silt-removing water gun 8 is about 20 to 30 mm, and the spraying angle is uniformly directed to different positions of the silt in front of the gate 18, so as to impact every silt area as much as possible.

[0056] The silt-guiding water gun 9 is connected to the silt-flushing branch pipe 4 and is arranged below the maintenance platform 17. The water spraying direction has a large horizontal component. On the one hand, the silt-guiding water gun 9 is directed to disperse the nearby silt and form a silt-flushing waterway 19 on the silt. On the other hand, the silt-flushing water near the gate 18 is brought to the external tidal river section through the silt-flushing waterway 19.

[0057] The hose water gun 10 is connected to the silt flushing hose 6 and is used to manually flush the silt at the silt flushing dead corners of the silt cutting water gun 8 and the silt guiding water gun 9.

[0058] The number of silt-removing water guns 8, silt-guiding water guns 9 and hose water guns 10 is determined according to the size of the gate 18 and the silt accumulation intensity. The silt-removing water volume of a single silt-removing water gun 8, silt-guiding water gun 9 and hose water gun 10 is 2.5 to 5 L / s.

[0059] The maintenance corridor 11 is arranged on the sluice maintenance platform 17 , close to the silt-removing water gun 8 and the silt-guiding water gun 9 , and is used for inspecting and repairing the silt-removing water gun 8 and the silt-guiding water gun 9 .

[0060] The operation and scheduling mode of the silt flushing system is a combination of the fixed sedimentation height silt flushing mode and the daily regular silt flushing mode. When the sediment deposition height in front of the gate 18 does not reach the starting silt flushing elevation 20, the silt flushing system is opened every half a month for silt flushing operation; when the sediment deposition height reaches the starting silt flushing elevation 20, the silt flushing system is directly opened for silt flushing of the sluice. Each silt flushing operation reduces the sediment height in front of the gate 18 to the minimum sediment deposition elevation 21.

[0061] The lowest siltation elevation 21 is equal to or slightly higher than the average low tide level of the tidal river section.

[0062] The above-mentioned implementation modes are combined with the accompanying drawings to describe the present invention, but this should not be understood as limiting the protection scope of the present invention. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the technical solutions obtained by equivalent replacement or equivalent transformation methods all belong to the protection scope of the present invention.

Claims

1. A silt flushing system for a sluice gate, characterized in that: It includes a water intake, a silt flushing pump unit, a silt flushing main pipe, a silt flushing branch pipe, a short pipe for an artificial silt flushing interface, a silt flushing hose, a regulating valve, a silt cutting water gun, a silt guiding water gun, a hose water gun and an inspection corridor; the water intake is a device for the silt flushing system to take water from a water source, and is installed in front of the silt flushing pump unit; the silt flushing pump unit is used to provide pressurized water for the silt flushing system and control the start and stop of the pressurized water pump, the front of the silt flushing pump unit is connected to the water intake through a short pipe, and the back of the silt flushing pump unit is connected to the silt flushing main pipe; the silt flushing main pipe connects the silt flushing pump unit and the silt flushing branch pipe, which is The main pipe of the silt flushing system; the silt flushing branch pipe connects the silt flushing main pipe and the silt cutting water gun and the silt guiding water gun, and the regulating valve is arranged at the end of the silt flushing branch pipe; the silt cutting water gun is arranged below the piers on both sides of the sluice and the maintenance platform; the silt guiding water gun is arranged below the maintenance platform; the artificial silt flushing interface short pipe connects the silt flushing main pipe and the silt flushing hose, and the regulating valve is arranged at the end of the artificial silt flushing interface short pipe; the silt flushing hose connects the artificial silt flushing interface short pipe and the hose water gun; the maintenance corridor is arranged on the sluice maintenance platform, close to the silt cutting water gun and the silt guiding water gun.

2. The silt flushing system for a sluice gate according to claim 1, characterized in that: The silt flushing pump unit includes a pressurized water pump, an inlet valve, a check valve, and an outlet valve; the pressurized water pump is arranged between the inlet valve and the check valve, the inlet valve is installed on the inlet pipe of the pressurized water pump, and the connection with the water source is cut off when the pressurized water pump is repaired; the outlet valve is arranged on the outlet pipe of the pressurized water pump, and the connection with the silt flushing main pipe is cut off when the pressurized water pump is repaired; the check valve is installed between the pressurized water pump and the outlet valve, and automatically closes when the pressurized water pump stops pumping to prevent the water in the silt flushing main pipe from flowing back.

3. The silt flushing system for a sluice gate according to claim 1, characterized in that: The length of the water outlet of the silt-removing water gun buried in the gate pier leaking out of the concrete is 20 to 30 mm.

4. The silt flushing system for a sluice gate according to claim 1, characterized in that: The silt-removing water gun buried in the gate pier has a spray angle uniformly directed toward different positions of the silt in front of the gate so as to impact every area as much as possible.

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