An energy dissipater for effectively controlling the slurry flow rate of a sludge pipeline

Abstract

The utility model discloses an energy dissipation device of effective control sludge pipeline slurry flow velocity, including high manganese steel reducing pipe, reinforcing rib, flange, rubber pad and high -strength bolt. High manganese steel reducing pipe is fixed with flange welding, and the inner wall is equipped with wear -resistant weld layer, is used for increasing fluid friction through partial reducing diameter, reduces slurry flow velocity, and reinforcing rib is used for enhancing the connection intensity, and rubber pad improves the leakproofness, and high -strength bolt is used for realizing fastening connection. The device simple structure, wear resistance is strong, convenient installation can effectively reduce the slurry flow velocity in pipeline, alleviate diesel engine overload risk, prolong the life of pipeline, improve the security and stability of dredging and filling construction.

Description

Technical Field

[0001] This utility model relates to the field of port and waterway dredging and reclamation engineering technology, specifically to an energy dissipation device for effectively controlling the flow velocity of mud in sludge discharge pipelines. Background Technology

[0002] Dredging and reclamation are key construction techniques in port, waterway, and land reclamation projects. They typically employ cutter suction dredgers, using mud pumps to transport sand and soil to designated reclamation areas. Dredging and reclamation pipelines usually include underwater suction pipes, floating pipes, and onshore pipelines.

[0003] In current engineering practice, the length of floating pipes is limited by the hydrological conditions of the construction area. For example, in the Yangtze River estuary area, the current is rapid and the waves are large, making it unsuitable to lay excessively long mud transport pipelines. If the pipeline is too short, the mud flow velocity will be too high, which can easily lead to the following problems:

[0004] Equipment overload: The diesel engine needs to run at high speed for a long time, which increases the exhaust temperature and causes the turbocharger to rotate too fast, posing a risk of overload.

[0005] Pipeline erosion: High-velocity mud severely erodes the steel pipe walls, leading to increased pipe wear and higher maintenance costs.

[0006] Decreased construction efficiency: Excessive flow velocity and unstable mud delivery may lead to increased energy consumption and decreased uniformity of backfilling.

[0007] Common energy dissipation methods in existing technologies include:

[0008] Elbow energy dissipation: It increases energy loss by changing the flow direction, but it is not conducive to pipeline layout;

[0009] Throttling valve energy dissipation: Although it can regulate flow, it is prone to generating local eddies and deposit blockage;

[0010] Diversion and energy dissipation: requires multiple pipelines, has a complex structure, and is not conducive to the layout of ship floating pipes.

[0011] Therefore, there is an urgent need for an energy dissipation device that is simple in structure, easy to install, highly wear-resistant, and can effectively reduce pipeline flow velocity, so as to ensure the stable operation of the dredging vessel's diesel engine, extend the service life of the pipeline, and improve construction efficiency. Utility Model Content

[0012] (a) Technical problems to be solved

[0013] To address the shortcomings of existing technologies, this utility model provides an energy dissipation device that effectively controls the flow rate of slurry in sludge discharge pipelines, solving the problems of excessive flow rate leading to diesel engine overload and pipeline erosion in existing technologies.

[0014] (II) Technical Solution

[0015] To achieve the above objectives, this utility model provides the following technical solution: an energy dissipation device for effectively controlling the slurry flow rate in a sludge discharge pipeline, comprising a high-manganese steel reducing pipe, reinforcing ribs, a flange, a rubber gasket, and high-strength bolts; wherein, the high-manganese steel reducing pipe and the flange are fixedly connected by welding, and the inner wall of the high-manganese steel reducing pipe is provided with a wear-resistant weld layer to improve its erosion resistance; the reinforcing ribs are welded at the junction of the straight section and the trapezoidal transition section of the high-manganese steel reducing pipe to enhance structural strength; the rubber gasket is disposed on the outside of the flange to improve the sealing performance at the connection with the floating pipe; the high-strength bolts penetrate the flange to achieve a tight connection between the energy dissipation device and the sludge discharge floating pipe.

[0016] As a further preferred embodiment of this utility model, the transition section of the high-manganese steel reducing pipe has a trapezoidal or hyperbolic structure to reduce fluid turbulence.

[0017] As a further preferred embodiment of this utility model, the inner wall of the high manganese steel reducing pipe can be replaced with a ceramic composite lining with a thickness of 5-8mm.

[0018] As a further preferred embodiment of this utility model, the high-strength bolts are of M24-M36 specifications, evenly distributed along the circumference of the flange, and the number of bolts is not less than 12.

[0019] As a further preferred embodiment of this utility model, the rubber pad is made of neoprene rubber or nitrile rubber with a thickness of 8-12mm.

[0020] As a further preferred embodiment of this utility model, the flange and the high manganese steel reducing pipe are connected by a double-sided bevel welding process.

[0021] As a further preferred embodiment of this utility model, the thickness of the reinforcing ribs is 8-12mm, and they are evenly distributed in the circumferential direction.

[0022] As a further preferred embodiment of this utility model, the wear-resistant weld layer has a thickness of 3-5 mm and is prepared using a high-chromium alloy overlay welding process.

[0023] (III) Beneficial Effects

[0024] This invention provides an energy dissipation device for effectively controlling the slurry flow rate in sludge discharge pipelines. It has the following beneficial effects:

[0025] This utility model device, through a reasonable diameter ratio design, effectively reduces the flow velocity in the pipeline by 2-3 m / s, ensuring stable diesel engine operation and preventing overload. The wear-resistant structure extends the device's service life by more than 50% compared to traditional pipe sections, reducing maintenance and replacement frequency. Its simple and compact structure facilitates installation and disassembly in confined spaces. The device possesses excellent sealing and vibration resistance, enabling it to adapt to harsh water flow and wave environments. It can be flexibly selected according to construction needs, exhibiting strong engineering adaptability and widespread application value. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a cross-sectional structural diagram of the interior of this utility model.

[0028] In the diagram: 1. High manganese steel reducing pipe; 2. Reinforcing rib; 3. Air guide channel one; 4. Air guide channel two; 5. High-strength bolt; 6. Wear-resistant weld layer. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-2 This utility model provides a technical solution: an energy dissipation device for effectively controlling the slurry flow rate in a sludge discharge pipeline, comprising a high-manganese steel reducing pipe 1, reinforcing ribs 2, a flange 3, a rubber gasket 4, and high-strength bolts 5; wherein, the high-manganese steel reducing pipe 1 and the flange 3 are fixedly connected by welding, and the inner wall of the high-manganese steel reducing pipe is provided with a wear-resistant weld layer 6 to improve erosion resistance; the reinforcing ribs 2 are welded at the junction of the straight section and the trapezoidal transition section of the high-manganese steel reducing pipe to enhance structural strength; the rubber gasket 4 is provided on the outside of the flange to improve the sealing performance at the connection with the floating pipe; the high-strength bolts 5 penetrate the flange to achieve a tight connection between the energy dissipation device and the sludge discharge floating pipe.

[0031] The wear-resistant weld layer 6 has a thickness of 3-5mm and is prepared using a high-chromium alloy overlay welding process.

[0032] The reinforcing ribs 2 are 8-12mm thick and are evenly distributed in the circumference to improve the overall stability of the energy dissipation device under the impact of high-velocity mud.

[0033] The flange 3 and the high manganese steel reducing pipe 1 are connected by a double-bevel welding process to enhance the strength and sealing of the connection.

[0034] Rubber gasket 4 is made of neoprene or nitrile rubber with a thickness of 8-12mm to ensure good sealing effect and wear resistance.

[0035] The high-strength bolts 5 are of M24-M36 specifications, evenly distributed along the circumference of the flange, and the number of bolts is not less than 12.

[0036] The transition section of the high-manganese steel reducer 1 has a trapezoidal or hyperbolic structure to reduce fluid turbulence.

[0037] The inner wall of the high manganese steel reducer 1 can be replaced with a ceramic composite lining with a thickness of 5-8mm to further improve wear resistance.

[0038] Energy dissipation devices can adopt single-stage or multi-stage series-connected variable diameter structures to adapt to different dredging and reclamation conditions. The overall length of the energy dissipation device is 0.8-1.5 meters to minimize the impact on pipeline layout while ensuring energy dissipation effect.

[0039] During the installation and connection of the equipment, the installers use anchors to lift the front floating pipe of the energy dissipation device to be installed. A rubber gasket is placed between the floating pipe and the end flange of the energy dissipation device to enhance the sealing of the connection. The front floating pipe and the energy dissipation device are then firmly fixed with high-strength bolts. The method of connecting the floating pipe at the rear end of the device is the same as that at the front. After the entire dredging and reclamation pipeline is connected, the cutter suction dredger can be put into operation.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An energy dissipation device for effectively controlling the slurry flow velocity in a sludge discharge pipeline, characterized in that: The device includes a high-manganese steel reducing pipe (1), a reinforcing rib (2), a flange (3), a rubber gasket (4), and a high-strength bolt (5). The high-manganese steel reducing pipe (1) and the flange (3) are fixedly connected by welding. The inner wall of the high-manganese steel reducing pipe is provided with a wear-resistant weld layer (6) to improve its erosion resistance. The reinforcing rib (2) is welded to the junction of the straight section and the trapezoidal transition section of the high-manganese steel reducing pipe to enhance the structural strength. The rubber gasket (4) is located on the outside of the flange to improve the sealing of the connection with the floating pipe. The high-strength bolt (5) penetrates the flange to achieve a tight connection between the energy dissipation device and the shoveling floating pipe.

2. The energy dissipation device for effectively controlling the slurry flow rate in a sludge discharge pipeline according to claim 1, characterized in that: The transition section of the high-manganese steel reducing pipe (1) is a trapezoidal or hyperbolic structure, which is used to reduce fluid turbulence.

3. The energy dissipation device for effectively controlling the slurry flow rate in a sludge discharge pipeline according to claim 1, characterized in that: The inner wall of the high manganese steel reducing pipe (1) can be replaced with a ceramic composite lining with a thickness of 5-8 mm.

4. The energy dissipation device for effectively controlling the slurry flow rate in a sludge discharge pipeline according to claim 1, characterized in that: The high-strength bolts (5) are of M24-M36 specifications, evenly distributed along the circumference of the flange, and the number of bolts is not less than 12.

5. The energy dissipation device for effectively controlling the slurry flow rate in a sludge discharge pipeline according to claim 1, characterized in that: The rubber pad (4) is made of chloroprene rubber or nitrile rubber with a thickness of 8-12mm.

6. The energy dissipation device for effectively controlling the slurry flow rate in a sludge discharge pipeline according to claim 1, characterized in that: The flange (3) and the high manganese steel reducing pipe (1) are connected by a double-bevel welding process.

7. The energy dissipation device for effectively controlling the slurry flow rate in a sludge discharge pipeline according to claim 1, characterized in that: The reinforcing ribs (2) are 8-12 mm thick and are evenly distributed in the circumferential direction.

8. The energy dissipation device for effectively controlling the slurry flow rate in a sludge discharge pipeline according to claim 1, characterized in that: The wear-resistant weld layer (6) has a thickness of 3-5 mm and is prepared by high chromium alloy overlay welding process.

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