KR20140043425A - Dredging and dredged soil transfer apparatus and methods with high pressure water pumps and attractive force generators and vortex generators and air compressors - Google Patents

Dredging and dredged soil transfer apparatus and methods with high pressure water pumps and attractive force generators and vortex generators and air compressors Download PDF

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KR20140043425A
KR20140043425A KR1020140032531A KR20140032531A KR20140043425A KR 20140043425 A KR20140043425 A KR 20140043425A KR 1020140032531 A KR1020140032531 A KR 1020140032531A KR 20140032531 A KR20140032531 A KR 20140032531A KR 20140043425 A KR20140043425 A KR 20140043425A
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pipe
seawater
dredging
dredged soil
dredged
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KR1020140032531A
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Korean (ko)
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김용기
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김용기
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/8858—Submerged units
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
    • E02F3/9262—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with jets
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9293—Component parts of suction heads, e.g. edges, strainers for preventing the entry of stones or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/006—Dredgers or soil-shifting machines for special purposes adapted for working ground under water not otherwise provided for

Abstract

In the present invention, when the subsurface soil of the dredging area is earth and sand, and the dredged landfill area is far away from the dredging area, the dredged soil is dredged and the dredged land is buried at the dredging point. It is about dredging device and dredging earth conveying device which can easily dredged conveying to the area and its method. More specifically, it is two high-pressure pump and rotation phenomenon generating device, attraction generating device, taper pipe, nozzle pipe, induction In addition to installing and operating pipes, air compressors, and compressed air supply pipes, the dredging capacity of subsea soils is improved, and air from the air is introduced into the rotary vortex generator through the air supply system. Spiral vortices generated by the operation of the rotary vortex generator for the air, seawater and dredged soil that are transferred to the rotary vortex generator By the flow, fluids are arranged in the order of air → sea water → dredging soil from the inner wall of the dredged soil transport pipe to the center of the pipe, and the seawater and dredged soil are transported to the dredged soil transport pipe inner wall. It is not in direct contact with (內壁), so that the amount of energy generated by the direct friction between the sea water and the inner surface of the dredged soil transfer pipe drastically reduces the energy loss. The present invention discloses a very useful dredging device, dredging soil conveying device and method for drastically reducing construction cost as well as construction period by allowing dredging and dredging of dredged soil in long distance.

Figure P1020140032531

Description

Dredging and dredged soil transfer apparatus and methods with high pressure water pumps and using high pressure pump, manpower generating device, vortex generating device, air compressor, etc. attractive force generators and vortex generators and air compressors}

The present invention is a new method of dredging and dredging soil transfer technology related to the sea dredging of the technology applied to the construction work, the high pressure pump for dredging when the underwater soil to the depth to be dredged The dredging of subsoil and sediment is easy by digging down and diverging the connected seawater transport pipeline to increase the seawater discharge point, and by increasing the discharge rate of seawater to excavate the ground to be dredged. In addition, by reducing the diameter of the seawater conveying pipe connected to the high pressure pump for dredging soil feed, the speed of movement of the seawater supplied from the high pressure pump for dredging soil feed is increased, and the high-speed seawater discharged through the nozzle pipe Turbulence and attraction are generated by flowing water into the induction pipe through the water inside the generator, and dredged inside the casing to float in the water. Is used to transfer dredged soil and seawater into the induction pipe, and uses the air supplied through the compressed air transfer pipe connected to the dredged soil transport pipe near the point where the dredged soil is connected to the guide pipe. Rotation radius in the direction of transport is minimized to minimize friction between the mixed fluids mixed with water, and seawater transferred to the dredged soil feed pipe using the rotary vortex generator and air introduced through the dredged soil and air inlet. Dredged soil reclamation area at a distance by minimizing the friction between the dredged soil transfer pipe inner wall and the mixed fluid mixed with dredged soil and seawater, by taking advantage of the effect of generating spiral vortices with reduced torque and torque Dredging device and dredging soil conveying device and its It relates to the law.

Background art applied to realize the present invention is the use of hydrodynamic principles, in particular the continuous equation of the fluid and Bernoulli's theorem is most important, and is supplied from the high pressure pump for dredging toy feed inside the manpower generating device located in the water through the nozzle pipe The fluid in the pipe to understand the turbulent phenomena and attraction phenomena occurring in the seawater and dredged soil particles in the manpower generating device by the seawater flow which is rotated into the guide pipe and rotates inside the guide pipe at high speed. Understand the fluid flow to the flow and channel and the viscosity of the seawater, and the theory of gravity, centrifugal and frictional forces to understand the behavior of air, seawater and dredged soil generated in dredged soil feed pipes by the operation of the rotary vortex generator And applied technology and from high pressure pumps for dredging to crush subsea grounds in water. An understanding of the viscosity and underwater friction of seawater is needed to understand the high speed seawater behavior and the speed required for dredging.

Looking at the existing patents related to dredging method and dredging toy transport technology, Korean Patent Publication No. 10-1102066 "Fishground Purification Apparatus and Method Using Bucket and Suction Dredging" and Korean Patent Application Publication No. 10-2010-0076926 " Dredging device equipped with a cylindrical excavator "and" D Dredging Device "of Korean Patent Publication No. 10-1012750 and" D Dredging Head Cover Device for Preventing Dredged Dispersion and Dredging Head Device " And Republic of Korea Patent Publication No. 10-0655789, "Sediment Recovery Device and Recovery Method Using Water Pressure Difference" and Republic of Korea Patent Publication No. 10-1102066 "Fishbook Purification Device and Method Using Bucket and Suction Dredging" and Republic of Korea Patent Registration The dredging principle of No. 10-0945081 “Vacuum Suction Dredging and Dewatering Device of Sludge Using Ejector” is inside a vacuum tank generated by a vacuum pump. It is considered to be a technology applicable to small dredging such as sewage pipes by dredging using vacuum principle. Dredging principle of the Korean Patent Publication No. 10-0871930 "High pressure injection sludge dredging pump" is installed in the casing of the centrifugal pump to install a plurality of high-pressure water jet nozzles to be sprayed to the outside, and the various high pressure water jets attached to the structure It is for a small dredging pump in such a way that the dregs are removed and sucked through a centrifugal pump. The transfer principle of the Republic of Korea Patent Publication No. 10-0812820 "landfill conveying device" is the transfer principle of the centrifugal pump, the soil and sand mixed with water passes through the impeller of the pump and the pressure formed by the rotation of the impeller It is conveyed through the pipe by using the velocity, and various factors such as friction and cavitation between the dredged soil and the inner surface of the pipe during the transport through the pipe are used for the distance and unit time. It is a reality that there is a limit in the dredged soil transport capacity, the Republic of Korea Patent Publication No. 10-2010-0137269 "continuous dredging system" is a secondary centrifugal pump in the water and onshore to overcome the dredged soil transport distance limitation caused by conventional pump dredging And it relates to a method for increasing the transport distance using a booster (Booster) installed with the relevant device. The transfer principle of “Underwater Patent Dredged Soil Transport and Treatment Method” is a method of adjusting the dredged soil embedding position by connecting and arranging several motor pumps and a pipe for transfer using a centrifugal pump transfer principle. It is about.

The transfer principle insisted in Korean Patent Application Publication No. 10-0846228, “Pressure wet reinforcing member installation apparatus and method thereof”, is an inlet of an ejector installed at the bottom of a hopper to inject a landfill material. By installing a conical tube with a reduced outlet cross-section connected to the pipe connected to the pump, it is possible to increase the pressure and flow rate of the water flowing in the pipe at high pressure and high speed to flow the inside of the ejector, and to fill the landfill material with air. Together with the ejector outlet, it is sucked into the pipe and the mixed layer of landfill material and high-pressure water can transfer the landfill material to a distance without friction in the pipe pipe while the cavity phenomenon occurs due to the air layer. It was said. However, the hopper and the ejector are connected, and the open structure through which the landfill material is injected through the hopper implies a technical contradiction in which a vacuum phenomenon cannot be generated inside the ejector, and the air inside the mixed layer in which the landfill material and the high pressure water are mixed The logic that the inside of the pipe becomes frictionless due to the phenomenon of cavitation is that the self-weight of the air is significantly smaller than that of water or landfill, so it collects at the top of the pipe, and rather, it reduces the life of the pipe. In addition, the heaviest landfill material is settled under the pipe in a wet state and is transported, so it must be a theory that distorts the reality that friction between the landfill material and the pipe pipe must occur. The transfer principle of “Registered after crushing dredged clay soil” is the Republic of Korea Patent Publication No. 10-0835584. The dredged soil is loaded on the towboat, transported to the landfill area, and then the dredged soil loaded on the towboat is sucked through the pipe. This unloading method transfers to landfill. This technique is also shorter because the dredged soil is transported through the impeller of the transfer pump, which is useful when sea sand is used as landfill. The dredging principle of the Republic of Korea Patent Publication No. 10-2013-0013129 "dehydration method including dehydration and sedimentation using a vacuum tank" and the dredging principle of the Republic of Korea Patent Publication No. 10-2012-0086504 "Mobile dredging soil treatment device" It is judged as a technology applicable to small dredging such as sewage pipes by dredging using the vacuum principle inside the vacuum tank generated by the vacuum tank, and Korean Patent Publication No. 10-10954151 “Basic sediment removing device and dredging method” is vacuum It is a technique that can be applied to small dredging by generating a vacuum using a compressor to dredge the base sediment through the suction pipe.

Dredging Principle of Korean Patent Application Publication No. 10-2010-0108360 "Drag Head of Trailing Hopper Dredger and Dredging Method Using this Drag Head" and Dredging Principle of Korean Patent Application Publication No. 10-2012-0086504 It is considered to be a technology applicable to small dredging such as sewage pipes by dredging using the vacuum principle inside the vacuum tank generated by the vacuum pump.

Existing general pump dredging and dredged soil transfer method operates excavation cutter located in front of the leader installed inlet of suction pump to excavate the soil layer of the seabed, and around the excavated soil and suction pump suction port. By operating the suction pump, the seawater is sucked into the suction pipe, and by using the rotational force of the suction pump impeller, pressure and speed are generated in the mixed fluid mixed with the sucked seawater and the dredged soil, and flows in the conveying pipe to the full. In this way, seawater and dredged soils are transferred to landfill. At this time, since the suction pump sucks the dredged soil and seawater by directly passing the pump impeller, friction between the dredged soil and the pump impeller is severely generated, and the suction capacity of the suction pump decreases rapidly due to the impeller wear. In order to lengthen the impeller replacement period, the impeller thickness is increased, which causes a vicious cycle of increasing the power required to operate the suction pump. In addition, a large amount of power is required to operate the devices related to the excavation cutter installed in the front of the leader, and a frame for supporting such heavy devices is required to avoid the enlargement of the ship carrying the dredging device. Could not. In addition, since the excavation cutter located on the front of the leader is large, there is no choice but to open the structure between the excavation cutter and the suction port of the suction pump. For this reason, the suction pump is suctioned per unit time. The ratio of pure dredged soil is less than about 20% of the total intake of the mixed fluid of seawater and dredged soil.

In addition, the method of transferring the mixed fluid mixed with seawater and dredged soil sucked from the existing dredging dredging to a landfill area is connected to one or more dredged soil feed pumps in series with the dredged soil conveying pipe connected to the dredged soil suction pump. After the improvement, the method of conveying the seawater and dredged soil in the conveying pipe in the state filled with it is used. However, this transfer method causes the dredged soil to settle in the lower end of the conveying pipe by gravity, and the friction between the settled dredged soil particles and the inner surface of the conveying pipe is continuously generated, resulting in increased flow velocity of the mixed fluid. Because of the drastic decrease, the initial operating power of the mixed fluid transfer pump should be large, proportionally, in proportion to the squared magnification of the transfer distance, and the mixed fluid and the transfer pipe inside the dredging feed pipe even if the power of the transfer pump is increased. Due to the friction between the dredged soils, the dredged soil transport distance cannot exceed 4.0 kilometers. In addition, in order to overcome these limitations, one or more intermediate pressure pumps (booster boosters) are installed in the transport section to increase the transport distance.However, the existing principle of transporting the dredged toy feed pipe to the full state is used as it is. Therefore, the effect is not great and causing the rise of dredged soil transfer costs. In addition, although the method using a combination of the transport and the dump truck transport using the dredged soil transport pipe, but eventually leads to a rise in the dredged soil transport price. And because the method of conveying the inside of the dredging conveying pipe in the filled state is used, due to the cavitations generated inside the dredging conveying pipe by air bubbles contained in the seawater Local breakdown and vibration of the inner surface of the pipes occur, and these phenomena act as an important factor to shorten the life of the pipe for dredged soil transfer along with friction between the inner surface of the pipe and the dredged soil particles. The dredging soil feed pipe becomes thicker than necessary, causing a rise in fixed costs.

The present invention is designed to solve the problem of excessive cost incurred by the above-described prior art and apparatus, and the limitation of dredging soil transport distance and transport capacity when dredging and transporting subsea soil, and dredging high speed seawater. High speed seawater flow, induction pipe and air inflow into the induction pipe by spraying from the nozzle pipe to the inside of the induction pipe by spraying on the subsea ground to excavate the seabed ground, and to make the subsea soil floating in the water. Due to turbulence and attraction caused by the operation of the device and the rotary vortex generator, the seawater inside the casing and the floating subsea soil are sucked into the guide pipe, and the casing that blocks the inflow of external seawater is transported into the dredging soil transport pipe. Inhalation ability of dredged soil per unit time by increasing the content of dredged soil of mixed fluid mixed with seawater and dredged soil It improves the force and operates the rotary vortex generator to operate the rotary vortex generator, which forcibly rotates the mixed fluid mixed with the seawater and dredged soil supplied from the air inlet device, so as to be in contact with the inner wall of the dredging transport pipe. By forming an air layer and forming a mixed fluid layer at the center, it minimizes the direct contact between the dredged soil feed pipe of the mixed fluid mixed with seawater and dredged soil, thereby minimizing the reduction of the feed rate in the dredged soil feed pipe of the mixed fluid. The present invention provides a dredging device, a dredged soil conveying device, and a method for transporting dredged soil mixed with a long distance.

As described above, the present invention provides a dredging area by spraying seawater at high speed when the geological area of the seabed up to the depth of dredging is composed of earth and sand and the target area of dredging soil is far from the dredging area. To excavate the subsea soil, transfer the dredged soil and seawater to the dredged soil feed pipe using high pressure pump and manpower generator, and transfer the mixed fluid from the inner surface of the dredged soil feed pipe using the air inflow device and the rotary vortex generator. By generating a high-speed flow in the form of a vortex that decreases the radius of rotation in the center direction, and forms an air layer between the dredged soil feed pipe inner wall and the mixed fluid mixed with seawater and dredged soil, the mixed fluid is dredged. (I) by allowing the conveying without direct contact with the inner wall of the dredging As a method of minimizing the energy loss due to friction, it is possible to transport dredged soil to a long distance with high efficiency.

In addition, the present invention, by using a high-pressure pump and a fixed rotation phenomenon generating device is passed through the induction pipe through the attraction generating device through the attraction pipe through the nozzle pipe, turbulence phenomenon and attraction generated in the attraction generating device Dredging capacity can be drastically increased by increasing the strength of the puller and blocking the inflow of seawater from the casing to the casing.

In particular, dredgers equipped with a new dredging device equipped with this technology can save at least 20% more power than conventional dredging pump dredgers with equivalent dredging capacity. Since dredging and dredging soil transfer can be carried out collectively in a small dredger of about%, it must be a very useful invention technology and device in terms of construction cost reduction and air shortening.

1 is a schematic explanatory diagram for showing a dredging device and a dredging soil transport apparatus according to the present invention.
Figure 2 is a schematic illustration of the installation of the various pipes connected to the high-pressure pump for dredging to supply high-speed flow of seawater in order to excavate the seabed soil according to the present invention.
3 is an explanatory diagram for schematically showing a stationary rotation phenomenon generating apparatus according to the present invention.
Figure 4 is a schematic explanatory diagram for explaining the operation of each device mounted around the attractive force generating device related to the present invention.
FIG. 5 is a schematic explanatory diagram for explaining various changes occurring in seawater supplied from a high pressure pump for dredging toy transportation around a manpower generating device related to the present invention; FIG.
Figure 6 is the dredged soil particles inside the casing by the action of the seawater supplied from the high-pressure pump for dredging soil transport in the manpower generating device and the casing according to the present invention to the inside of the guide pipe at a high speed through the nozzle pipe and An explanatory diagram for explaining the behavior of dredged soil particles and seawater flowing into an induction pipe due to turbulence and attraction in seawater.
7 is an explanatory diagram for schematically showing an air supply device and a rotary vortex generating device according to the present invention;
8 is an explanatory diagram for illustrating a method of installing a vortex generating wing installed in the rotary vortex generating device according to the present invention.
9 is an explanatory view for explaining the behavior of dredged soil, sea water and air in a dredging soil conveying pipe before and after passing through a rotary vortex generating device according to the present invention;

BRIEF DESCRIPTION OF THE DRAWINGS In order to realize the object of the present invention, it will be described in detail with reference to the accompanying drawings.

Figure 1 is for schematically showing and explaining the entire dredging device and dredging earth conveying apparatus of the present invention, the apparatus of the present invention is largely a high pressure pump 100 for dredging earth transport, pumping pipe 101, high pressure pump ( Seawater transport pipe (102) for transporting seawater supplied from the seawater (100), a stationary rotation phenomenon generating device (103) for rotating the seawater (sea water) in the pipe 102, and seawater transport pipe and Taper pipe 104 is connected to the nozzle pipe to increase the speed of sea water, nozzle pipe 105 for maintaining the shape of sea water rotated and transported at high speed, and high pressure pump for dredging ( Casing 107 that sprays the seawater supplied from the high speed through the excavation seawater spray nozzle 203 to crush the seabed ground and prevent the seawater inside the casing 107 floating in the water to spread to the outside ) And casing Dredged soil and casing, which are located in the section and float due to turbulent phenomena and attraction caused by seawater being injected at high speed while rotating into the induction pipe 108 through the nozzle pipe 105 A manpower generating device 106 for smoothly moving the internal seawater to the inside of the induction pipe 108, and the seawater supplied from the nozzle pipe 105 with the introduced seawater and dredged soil; Induction pipe 108 to mix and generate the vortex, and compressed air supply pipe for supplying compressed air to reduce friction generated inside the dredging toy conveying pipe 111 connected between the induction pipe 108 and the air supply device ( Unmarked 401, an air supply device 109 for supplying atmospheric air to the vortex generator by the suction force of the vortex generator 109, and rotation of the supplied air, seawater and dredged soil at high speed. Let It consists of a rotary vortex generator 110 for generating a high vortex flow of high energy, a pipe 111 for dredging earth feed, and the like.

 The high-pressure pump 100 for dredging toys can generate a pressure of up to 20.0 atm, and uses a special pump that can express up to 1800 revolutions per minute of the pump impeller. . This is an essential condition for supplying enough energy to transport the mixed fluid mixed with sea water and dredged soil to a long distance.

The seawater transport pipe 102 uses a pressure pipe capable of withstanding the derivation pressure of the high pressure pump 100.

The fixed rotation phenomenon generating device 103 is one rotational phenomenon generating wing installed in the pipe of a predetermined length of sea water (sea water) supplied from the high-pressure pump 100 and transported into the pipe 102 ( By forcibly causing rotation while passing through 301, rotating seawater passing through the attraction generating device installed inside the casing and conveyed into the induction pipe 108, Manpower generating device Generates turbulence and attraction of magnitudes larger than the turbulence and attraction caused by the flow of seawater that passes without rotating the inside of the manpower generating device. It is a device to obtain the effect.

The tapered pipe 104 increases the moving speed of the seawater supplied from the high pressure pump 100 by the continuous equation of the fluid and the Venturi effect.

The nozzle pipe 105 has a shape of seawater flowing at a high speed while passing through the rotation developing device 103 and the taper pipe 104 and rotating the inside of the nozzle pipe 105. It acts to be able to move into the induction pipe 108 without causing a diffusion phenomenon in the water in the inside of the water, and in the sea water from the sea. Since the distance that the body shape is maintained is a factor that determines the size of the attraction force generator, the length of the nozzle pipe 105 is an important consideration.

The attraction generating device 106 is a high-speed seawater passing through the nozzle pipe 105 is discharged into the water inside the attraction generating device 106, the induction pipe ( 108) The pressure of the seawater generated by the high pressure pump 100 is lowered to the level of the underwater pressure in the casing 107 through the process transferred to the inside, and the pressure is reduced by Bernoulli's theorem. (I) The energy proportional to the pressure difference increases the speed of seawater movement, and the attraction force is caused by the flow of seawater with this increased speed and rotational force. Generates attraction to turbulence and induction pipes 108 in seawater and dredged soil in the interior, and guides dredged soils and seawater easily with small attraction force. ) To be transferred inside.

Dredged soil particles excavated and suspended in the sea bed by high-speed seawater discharge generated by the operation of the dredging high pressure pump 200 in the water, and the attraction force generated in the attraction generating device 106 is suspended in the water ( If greater than the gravity applied to the dredged soil is moved to the guide pipe 108 without being settled to the sea floor, the casing 107 prevents the floating dredged soil to spread to the outside and outside the casing It plays a role of preventing unnecessary seawater from flowing into the guide pipe excessively. And the casing is installed in the front of the leader (flexible) and flexibly connected to the guide pipe so as to cope with the slope of the seabed ground, the casing between the nozzle pipe 105 and the sea water spray nozzle 203 is located inside the casing A wire mesh is attached to the inner surface to block the movement of rocks of a certain size into the guide pipe. Since the induction pipe 108 is sprayed from the nozzle pipe 105 and the seawater passing through the attraction generating device 106 and the dredged soil and the seawater inside the casing is mixed, the nozzle pipe It is formed with a larger diameter than the diameter of 105, and in the guide pipe 108, the seawater inside the dredged soil and the casing has an area except for a cross section occupied by the seawater supplied from the nozzle pipe 105. The amount of dredged soil and seawater sucked per unit time is greatly influenced by the length and diameter of the guide pipe 108, the speed of seawater passing through the nozzle pipe 105, and the distance between the nozzle pipe and the guide pipe. Vortex phenomena occur in the mixed fluid in which seawater and dredged soil particles are mixed inside the induction pipe 108.

The air supply device 109 has the same operation structure as the attraction force generator 106 in water, but the difference from the attraction force generator is that only air in the air is introduced, and the amount of air introduced into the vortex generator 110 is operated. This increases sharply. In addition, the mixed fluid of the dredged soil and sea water is transferred through the induction pipe is injected into the induction pipe through the nozzle pipe 906 in the air supply device together with the compressed air supplied from the compressed air supply pipe 401, this process In the compressed air is discharged to the atmosphere and the air in the atmosphere is sucked into the guide pipe (907).

The rotary vortex generating device 110 may be manufactured as a separate independent device including a driving engine or a motor and a support frame, and includes six or more vortex generating vanes mounted inside the outer case and the case ( (Not shown) is rotated at a high speed so as to have the largest rotational force and rotation radius at the adjacent portion of the inner surface of the case, and into the pipe 111 in a state where the vortex generator 110 is operated. As the seawater, dredged soil and air being transported pass through the vortex generator 110, vortices are generated in which the rotating radius decreases toward the center of the pipe 111 due to the difference in self-weight, frictional force, and centripetal force. 111) The lightest air layer is formed in a circular shape in the contact space with the inner surface, and a circular seawater layer is formed in the space inside the pipe except the air layer, and the heaviest dredged soil is formed. The ruler forms a circular integrated shape in the center of the formed seawater cross-section, and the air layer formed minimizes direct friction between the inner surface of the pipe 111 and the mixed fluid in which seawater and dredged soil are mixed. Compared with the existing dredged soil pumping method, which pumps dredged soil using a pump that generates the same extraction speed and pressure and does not vortex, the transfer distance can be improved by at least five times. However, the air layer formed inside the pipe 111 due to various realistic factors such as ground height change and planar linear change, which are considered when installing the pipe 111, and air leaks in the flange portion of the pipe 111 connection flange. When the holding distance is shortened, the distance between the air layer is maintained can be checked and the rotary vortex generating device and the air supply device 109 may be additionally installed.

The dredging toy pipe 111 may use a steel pipe or polyethylene-based plastic pipe and high-pressure hose for dredging, it is not recommended to use the uneven inside (凹凸). In addition, the determination of the diameter of the pipe 111 is determined in consideration of the combined amount of seawater supplied from the pump 100 introduced through the induction pipe and the seawater sucked in the casing 107 and the dredged soil per unit time. If a pipe smaller than the diameter of the seawater transportation pipe 102 is used, the amount of dredged soil transferred to the induction pipe 108 together with the seawater may be limited, and the diameter of the pipe 111 may be excessively large. If large, a large amount of compressed air is required to form a thick air layer on the inner wall, and when the power of the rotary vortex generating device causing the rotational force of the mixed fluid is insufficient, the self-weight of the mixed fluid mixed with seawater and dredged soil Due to the sedimentation of the dredged soil particles due to the circular air layer formed on the inner wall of the pipe 111 can be destroyed, by using the air supplied to the vortex generator 110 of the required thickness In order to form an air layer, various limitations should be taken into consideration to determine the size of the pipe 111.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention will be described by those skilled in the art to which the present invention is applicable.

Therefore, the embodiments of the present invention can be modified into various other forms, so that the claims of the present invention are not limited by the embodiments described below.

2 is connected to the high pressure pump for dredging for subsea soil excavation in accordance with the present invention is fixed to the installation method and the casing 107 lower side of the seawater transfer pipe 202 through branching and cross-sectional reduction As illustrated to explain the operation of the excavated seawater spray nozzle 203, the high-pressure pump 200 can generate a discharge pressure up to 20.0 atm, the pump impeller (Impeller) Using a special pump that can express up to 1800 revolutions per minute, and the seawater transfer pipe 202 connected to the high-pressure pump 200 is connected to the taper pipe with a reduced cross-sectional area in the seawater progress direction 'Y Repeat a series of four or more steps of branching in a 'shape, and finally, at least eight or more lower portions of the lower side of the casing 107, within 20 degrees or more and 45 degrees based on the bottom surface of the casing 107. Fixed mounting, inclined to It is connected to the water injection nozzle (203). At this time, the tip of the seawater jetting nozzle 203 should be located within 20 centimeters of the vertical distance from the end of the casing bottom surface, because of the distance from the bottom of the seabed layer due to friction and pressure of the seawater in the water This is because the power of the seawater, which is supplied from the high pressure pump 200, which is applied to the seabed for dredging, decreases exponentially in proportion to the distance.

3 is a view illustrating the fixed rotation phenomenon generating device 103 in accordance with the present invention, one rotation installed inside a pipe of a predetermined length having the same diameter as the seawater transport pipe (102) The development wing 301 is deformed in the form of twisting the initial position and the end position uniformly in the same direction along the inner surface of the pipe, and finally the end is installed in the form of moving 90 degrees. Rotation phenomenon generating blade 301 has sufficient rigidity to withstand the high water pressure and speed of the seawater supplied from the high pressure pump 100, the high-speed flow of the seawater flowing in a straight line in the form of rotation It acts to induce a change. The purpose of this apparatus is to rotate the seawater supplied from the high pressure pump 100 at a high speed in the attraction generating device 106, so that the turbulence phenomenon and attraction generated from the flow of the seawater in the unrotated state can be reduced. This is to generate stronger turbulence and greater attractive force, so that the dredged soil and the seawater are smoothly transported into the guide pipe 108.

4 is a view for explaining the operation of each device mounted around the attraction generating device (引力 본 生 裝置) related to the present invention, the dredging high-pressure pump 200 to operate the minimum on the lower wall of the casing 107 Undersea soil is excavated by the high-speed seawater sprayed from the seawater jet nozzle 203 mounted in eight or more places, and the dredged soil particles and seawater induced in the casing due to the attraction force generated in the attraction generating device 106 are induced. Conveyed into the pipe 108.

FIG. 5 is a fluid continuous equation and Bernoulli's theorem, considering the pressure and velocity of seawater varying around the attraction force generator 106 according to the present invention, together with the pipe diameter. As a figure exemplified for analysis, when the head of friction due to internal friction, shape factor, or the like is not considered, the seawater movement speed Vb in the nozzle pipe 105 is calculated.

π × (Da) ² / 4 × Va = π × (Db) ² / 4 × Vb: Continuous equation

Here, if Da = 2.5Db

Vb = (2.5) ² x Va = 6.25Va.

In addition, the Bernoulli theorem is considered to calculate the seawater movement speed in the attraction generating device 106, and the pressure is changed from the pressure Pb in the nozzle pipe 105 to the underwater pressure (up to about 3 atm). The seawater moving speed (Vc) passing through the nozzle pipe 105 results in a speed increase of at least about 10% or more than the seawater moving speed (Vb) in the nozzle pipe 105, and the dredged soil and seawater transported inside the induction pipe 108. Is considered to be mixed, and since the inside diameter of the dredged soil feed pipe 111 does not differ significantly from the inside diameter of the seawater transport pipe 102, even if the loss head is considered, the pipe for dredged soil feed 111 The mixed fluid velocity Ve in the c) increases at least twice as much as the seawater moving velocity Va in the seawater transportation pipe 102.

6 shows the dredged soil inside the casing by the action of the seawater supplied from the high pressure pump 100 inside the attraction generating device and the casing at high speed through the nozzle pipe to the attraction generating device and the induction pipe. A diagram illustrating the flow of dredged soil particles and seawater into an induction pipe due to turbulence occurring in seawater and attraction force generated in the attraction generating device 106. Looking at the behavior of the dredged soil particles and seawater in the manpower generating device 106 and the casing 107 through the first operation, the first operation step in the entire system is to operate the air compressor through the compressed air supply pipe 401 It is supplied to the dredging toy conveying pipe 110 between the induction pipe 108 and the air supply device 109, the second operation step is to operate the rotary vortex generating device (110) The air flows through the pipe 111 for dredging soil. In the third operation step, the high pressure pump 100 is operated to move the seawater. At this time, the nozzle is discharged from the nozzle pipe 105 to pass through the attraction generating device and attracted by the seawater flowing into the induction pipe 108 at high speed. Turbulence and attraction occur in the seawater in the generator 106, and the seawater inside the casing flows into the guide pipe. However, at the beginning of the third operation stage, since the manpower generating device submerged in the water and the induction pipe and the dredging toy pipe 111 are filled with sea water and compressed air, an initial operation of a predetermined time is required to produce the above operation effect. In the fourth operation step, the subsea soil is excavated by the high-speed seawater sprayed from the seawater injection nozzle 203 by operating the high pressure pump 200, dredged soil due to the attraction force generated by the attraction generating device 106 Particles and seawater in the casing are transported to the inside of the guide pipe 108, passes through the rotary vortex generator 110 via the dredging toy feed pipe 111, and then transferred to the landfill through the dredging toy feed pipe 111. do.

FIG. 7 is a view illustrating the rotary vortex generator 110 related to the present invention. First, an air compressor is operated to connect a dredging toy pipe 111 connected between an induction pipe 108 and an air supply device 109. ) To form an air flow therein, and then to operate the rotary vortex generator 110 to flow the air in the form of vortex inside the dredging tortoise pipe 111 connected to the vortex generator deriving part, and then to the high pressure pump (100). Sea water is transported through the rotary vortex generator 110 and then flows into the air layer flowing in the dredged soil feed pipe 111, in the form of a vortex, and finally the attraction generator 106 And the seawater and dredged soil in the casing introduced through the induction pipe 108 is mixed with the seawater supplied from the high-pressure pump 100, by the rotary vortex generator 110, Tape 111 represents the behavior to be transferred to a vortex in the form of a high speed by forming the inner wall (內壁) dredged → water → air end face of the circular order in a direction from the center of the inside. In addition, the mixed fluid pressure of the seawater and dredged soil passing through the induction pipe 108 and introduced into the dredged soil feed pipe 111 is lower than the underwater pressure in the attraction generating device 106. In addition, the air layer exhibiting a vortex-like flow formed on the inner wall of the pipe 111 by the operation of the rotary vortex generator 110 has a pressure higher than atmospheric pressure between the inner wall of the pipe 111 and the mixed fluid. While passing through (110), it has a faster moving speed than when it is sucked into the guide pipe (108), but less than the conveying speed of the mixed fluid mixed dredged soil and seawater due to friction with the inner wall of the pipe (111) It has a velocity so that the air layer can be maintained. In addition, due to the suction force generated by the movement of the air in the pipe 111 at high speed by the operation of the vortex generator 110, the amount of air in the air introduced into the air supply 109 is further increased, and As a result, an air layer inside the pipe 111 may be formed. Therefore, the cavity cavitations and vibration phenomena generated in the flow of the fluid flowing in the pipe 111 at a high pressure without the air layer formed on the entire inner wall of the dredging toy conveying 111 The sedimentation phenomenon of the mixed fluid, which occurs due to the self-weight of the mixed fluid mixed with sea water and dredged soil, does not occur in the pipe 111 to which the applied fluid is applied. By creating a condition in which the vortex rotational force can be canceled by the combined force, the mixed fluid can be easily transported to the required distance. To this end, a large output engine or motor suitable for high-speed rotation, which can express sufficiently high revolutions per minute of the rotary vortex generator 110, should be used, and a method of transmitting the rotational force of the engine or motor to the cylindrical case for rotating It is possible to select a convenient method from gear type or chain type.

8 is a view illustrating the arrangement and behavior of the vortex generating wing 908 by simultaneously showing the inside of the rotating part and the front and rear parts of the rotating part of the rotary vortex generating device 110 according to the present invention. Six or more vortex generating wings are installed inside the device 110, and each vortex generating wing 908 moves evenly on the inner surface of the gradually rotating cylindrical case (Case) at a position installed at the front portion of the rotating part. Finally, the rear part of the rotating part is installed in the form of the wing starting point and moved more than 120 degrees, the size of the vortex generating blade 908 is the seawater per unit time according to the moving speed and the mixed fluid moving speed of the mixed fluid And the volume and weight of the dredged soil, the potential energy due to the self-weight of the mixed fluid and the transport distance of the mixed fluid, etc., from which the vortex generator 110 rotates. The required output of the engine and the motor are determined for. In addition, since the mixed fluid rotates and is conveyed at high speed, when the rotational speed of the vortex generating device 110 is minute, the cross-sectional shape of the mixed fluid and air mixed with seawater and dredged soil is incomplete in the dredged soil feed pipe 111. Friction occurs between the mixed fluid and the inner surface of the pipe 111, the dredged soil is not densely accumulated in the center of the mixed fluid, and the pipe 111 is installed and Since the conveying distance of the mixed fluid may be shortened according to various constraints occurring during operation, it is very important to sufficiently increase the number of revolutions per minute of the rotating part of the rotary vortex generator 110.

FIG. 9 is a view illustrating the internal behavior of the dredging and towing pipe 111 before and after the mixed fluid, which is mixed with air, sea water and dredged soil, passes through the rotary vortex generator 110 in relation to the present invention. As shown in the figure, the behavior of the mixed fluid and air before passing through the vortex generator 110 is shown on the left side of the vortex generator 110, and after the vortex generator 110 passes the vortex generation of the mixed fluid and air behavior Shown on the right side of device 110. As can be seen in the figure, the distribution radius in the dredged soil conveying pipe 111 of dredged soil and seawater after passing through the vortex generator 110 is less than the rotation radius in the fluid flow direction than before passing through the vortex generator 110. It can be seen that due to the vortex effect, the rotational force decrease and the moving speed increase due to the self-weight and friction of seawater and dredged soil, it is concentrated in the center of the pipe 111, and the seawater is operated by the operation of the vortex generator 110. The cross-sectional area of seawater and dredged soil is decreased and the air layer thickness is increased due to the effect of increasing the moving speed of dredged soil and dredged soil.

As described above, the respective devices of the dredging device and the dredging soil transport device of the present invention through the above-described behavior, the geological soil of the sea bed to be dredged is the soil (soil) and the dredged landfill area is dredged area and remote If it is far away, dredging and soil transfer can be carried out by saving up to 30% in use power compared to the existing pump dredging method with the same dredging capacity per hour. have.

100: high pressure pump for dredging
101: pipe for pumping water
102: seawater transport pipe
103: Stationary rotating phenomenon generating device
104: Tapered pipe (conical pipe)
105: nozzle pipe
106: Manpower generating device (gravity generating device)
107 casing
108: guide pipe
109: air inlet device
110: rotary vortex generator
111: Pipe for Dredging Toy Feed
200: high pressure pump for dredging
201: pumping pipe
202: dredge seawater transport pipe
203: Excavation seawater nozzle which is finally connected to casing lower part through 'Y' branch
301: wing for generating a fixed rotation phenomenon
401: compressed air supply pipe
601: seawater model is rotated and sprayed at high speed
602: Model of behavior in casing of dredged soil particles by sea water sprayed at high speed supplied from dredging high pressure pump
603: A model showing turbulent phenomena and attractive phenomena caused by seawater being rotated and transported at high speed
901: Bearing for rotation
902: gear for rotary vortex generator
903: Sealing Band
904: Gear transmission gear
905: power transmission motor
906: air supply nozzle pipe
907 air induction pipe
908: Vortex Wings
11: Air layer model flowing while rotating while forming an incomplete vortex inside the dredging transport pipe 111
12: Model of seawater flowing while rotating while forming an incomplete vortex in the dredged torsion pipe 111
13: Model of dredged soil particles that are dispersed and transported in the mixed fluid while rotating while forming incomplete vortices in the dredged soil conveying pipe 111
14: rotational force model generated by the fixed rotation phenomenon generating device 103
15: Vortex type rotational force model generated when a mixed fluid of dredged soil and seawater passes through an induction pipe 108
16: Air layer model that is expanded by the operation of the rotary vortex generator 110 and has increased the vortex type rotational force
17: Seawater model with a reduced cross-sectional area and increased vortex-type rotational force due to the increase in the moving speed due to the operation of the rotary vortex generator 110
18: The cross-sectional area is reduced due to the increase in the moving speed due to the operation of the rotary vortex generator 110, and the dredged soil particles are accumulated in the center of the dredged soil feed pipe 111 due to the increase in the centrifugal force toward the center. Dredge soil model
19: Vortex type rotational force model increased by the operation of the rotary vortex generator 110
Pa, Va, Da: pressure, velocity and inner diameter of the fluid in the seawater transport pipe 102
Pb, Vb, and Db: pressure, velocity, and pipe inner diameter of the seawater in the nozzle pipe 105
Pc, Vc: pressure and velocity of the seawater supplied from the dredging toy feed pump in front of the seawater discharge portion of the nozzle pipe 105
Pd, Vd, Dd: pressure, velocity, pipe diameter of the mixed fluid in the induction pipe 108
Pe, Ve, De: pressure, speed, pipe inner diameter of the mixed fluid in the dredging tow transport pipe (111)

Claims (5)

Dredging process including the process of spraying high speed seawater supplied from dredging high pressure pump to the seabed to be dredged to excavate the seabed, and the excavated soil particles are mixed with seawater in the casing to float;
The seawater introduced by the operation of the high-pressure pump for dredging toys is changed into a state of rotation at high speed through the seawater transportation pipe, the stationary rotation generator, the taper pipe, and the nozzle pipe, and sprayed into the water inside the manpower generator. Afterwards, the pipe is introduced into the guide pipe, causing turbulent phenomena in the seawater and floating dredged soil particles inside the casing, and the seawater and dredged soil particles inside the casing are introduced into the guide pipe due to the attraction force. Supplying compressed air to the dredging conveying pipe connected between the induction pipe and the air supply device to reduce the friction generated between the mixed fluid of seawater and dredging soil and the dredged conveying pipe inner wall through the induction pipe Measures to minimize the slowdown of Dredging process, including the process;
The air in the air supplied through the air supply device is transferred to the inside of the rotary vortex generator due to the suction force generated by the operation of the rotary vortex generator, and the inner wall of the pipe for dredging toy transportation by the rotary vortex generator ) Has the largest rotation radius and rotation speed, and forms a spiral vortex flow that reduces the rotation radius and rotation speed in the direction of seawater and dredged soils, and the center of the pipe for dredging soil transfer in the inner wall of the dredging transport pipe. A dredged soil transfer process including a step of forming a circular air and seawater cross-section stepwise in a direction, and forming a circular dredged soil cross section at the center of the circular seawater cross-section;
Sedimentation caused by the self-weight of seawater and dredged soil is prevented by using the rotational energy of seawater and dredged soil generated by the operation of the rotary vortex generator in the dredging transport pipe, and the air layer formed on the inner wall of the dredged transport pipe Process to transfer dredged soil and seawater to a long distance by minimizing the direct friction between the mixed fluid mixed with seawater and dredged soil and the inner wall of dredged conveying pipe. Dredged soil transfer process comprising a. The dredging process according to claim 1, wherein the dredging process including a step of spraying high-speed seawater supplied from a high-pressure pump for dredging to the seabed to be dredged to excavate the seabed, and the excavated soil particles are mixed with seawater in the casing to float. The high-pressure seawater supplied from the high pressure pump of the dredged seawater conveying pipe is gradually reduced in size to improve the flow rate, and dividing into at least eight or more digging seawater mounted on the lower side of the casing Dredging device and method, characterized in that the jetting through the injection nozzle at high speed to crush the seabed layer, floating the dredged soil particles in the casing. The method according to claim 1, wherein the seawater introduced by the operation of the high-pressure pump for dredging toy feed is changed to a state of rotation at high speed while passing through the seawater transport pipe, a fixed rotation phenomenon generating device, a taper pipe, a nozzle pipe, etc. After spraying the water into the guide pipe, it is introduced into the induction pipe, causing turbulent phenomena in seawater and floating dredged soil particles inside the casing. In addition, the compressed air is supplied from the air compressor to the dredging conveying pipe connected between the induction pipe and the air supply device to reduce friction generated between the mixed fluid of seawater and dredging soil flowing through the induction pipe and the inner wall of the dredging conveying pipe. The slowdown of seawater flowing through the guide pipe The dredging process, including the steps to make the ignition system, improves the feed rate of the seawater supplied from the high pressure pump for dredging and transport by reducing the diameter of the seawater conveying pipe and using the fixed rotation phenomenon generator. It transforms the flow into a linear motion that rotates and casings by using turbulent phenomena and attraction generated by sea water that flows into the induction pipe from the end of the nozzle pipe to the inside of the induction pipe. The manpower generator is specially manufactured to move the dredged soil particles and seawater into the induction pipe, and the compressed air is supplied to the dredged soil conveying pipe connected between the induction pipe and the air supply device. Reduces friction generated between the mixed fluid of seawater and dredged soil transported inside and the inner wall of dredged soil feed pipe Dredging device and method characterized in that for reducing the movement speed of the sea water flowing into the pipe by continuously supplying the compressed air into the dredged soil feed pipe. The method of claim 1, wherein the air in the air supplied through the air supply device is transferred to the inside of the rotary vortex generator due to the suction force generated by the operation of the rotary vortex generator, for dredging soil transport by operating the rotary vortex generator The inner radius of the pipe is the largest in the radius of rotation and the speed of rotation, and forms a spiral vortex flow that reduces the radius of rotation and the speed of rotation in the direction in which seawater and dredged soil are transported. The dredged soil transfer process including the step of forming a circular air and seawater cross-section stepwise toward the center of the dredged soil conveying pipe at the center, and forming a circular dredged soil cross section at the center of the circular seawater cross-section, Atmosphere from the air supply device to the mixed fluid of dredged soil and seawater Air is supplied and the amount of air flowing into the rotary vortex generator is rapidly increased, and the rotational force is the largest on the inner wall of the rotary casing of the rotary vortex generator, and the torque is reduced toward the center of the rotary casing. The rotating vortex generator is designed to force the target fluids to rotate at high speed through the operation of the rotary vortex generator, and the rotating radius and rotational speed from the inner wall of the dredging torsion pipe to the center due to the effect of reducing the rotational force by the self-weight and frictional force of the mixed fluid. Spiral vortex is formed, and a circular air layer and seawater cross-section are formed in the direction of the center from the inner wall of the dredging soil feed pipe due to the difference in the weight of the mixed fluid to be transported. Cross section of dredged soil is formed in densely packed state and mixed with air Dredged soil conveying apparatus and method, characterized in that the fluid is conveyed at high speed while rotating in the dredged soil conveying pipe. The method according to claim 1, wherein the sedimentation caused by the self-weight of seawater and dredged soil in the dredged soil feed pipe is prevented by using the rotational energy of seawater and dredged soil generated by the operation of the rotary vortex generator, and the inner wall of the pipe for dredged soil feed. This method minimizes the direct friction that occurs between the mixed fluid mixed with seawater and dredged soil and the inner wall of the dredged transport pipe by using the air layer formed in the method. The dredged soil and seawater are extended by increasing the time that the mixed fluid rotational energy is equal to the gravity energy of the mixed fluid. The dredged soil transfer process, including the process of transporting to a long distance, sufficiently increases the rotational energy of the seawater and dredged soil generated by the rotary vortex generator, minimizes the friction generated with the inner wall of the pipe for dredged soil transfer, and the seawater and dredged soil The internal energy of seawater and dredged soil By increasing the time it takes, dredged soil and seawater increase the transportable distance in the conveying direction in the dredged soil conveying pipe, and the air flowing through the air generating device by the operation of the rotary vortex generator is the air layer inside the whole dredged soil conveying pipe. The rotary vortex generating device is supplied with a sufficient amount to form a stiffness, and by reducing the friction generated between the inner wall of the dredging feed pipe and the mixed fluid by the action of the air layer formed on the inner wall of the dredging feed pipe. A dredged soil conveying apparatus and method, characterized in that the dredged soil can be transported to a landfill in a distance by using a method of minimizing the negative acceleration acting on the mixed fluid that has passed.
KR1020140032531A 2014-03-20 2014-03-20 Dredging and dredged soil transfer apparatus and methods with high pressure water pumps and attractive force generators and vortex generators and air compressors KR20140043425A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103954168A (en) * 2014-05-07 2014-07-30 莱芜钢铁集团有限公司 Sewage disposal device and sewage disposal method for electrical cabinet water cooling systems in intermediate frequency furnace and vacuum furnace
CN109056867A (en) * 2018-09-11 2018-12-21 湖南金睿能源科技有限公司 A kind of high-pressure pneumatic adds the suction sand energy conserving system pushed away
CN113550367A (en) * 2021-09-22 2021-10-26 江苏玖泰电力实业有限公司 Dredger slurry charging and plugging spray head device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103954168A (en) * 2014-05-07 2014-07-30 莱芜钢铁集团有限公司 Sewage disposal device and sewage disposal method for electrical cabinet water cooling systems in intermediate frequency furnace and vacuum furnace
CN103954168B (en) * 2014-05-07 2016-01-20 莱芜钢铁集团有限公司 A kind of intermediate frequency furnace, vacuum drying oven regulator cubicle water-cooling system sewage disposal apparatus and cleaning method
CN109056867A (en) * 2018-09-11 2018-12-21 湖南金睿能源科技有限公司 A kind of high-pressure pneumatic adds the suction sand energy conserving system pushed away
CN113550367A (en) * 2021-09-22 2021-10-26 江苏玖泰电力实业有限公司 Dredger slurry charging and plugging spray head device

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