CN112645407A - Long-distance water transfer engineering biological fouling treatment process - Google Patents
Long-distance water transfer engineering biological fouling treatment process Download PDFInfo
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The invention discloses a long-distance water transfer engineering biological fouling disposal process, which is based on a cavitation jet technology, utilizes a sharply contracted flow cross section arranged in a cavitation jet nozzle to induce cavitation in liquid jet and enable cavitation bubbles to grow, utilizes extreme microscopic conditions of high temperature, high pressure, strong shock wave and high-speed microjet generated when cavitation bubbles are destroyed to realize the removal of the surface biological fouling when jet containing the cavitation bubbles impacts the surface of an object, belongs to the technical field of water treatment, and particularly relates to an underwater cavitation jet cleaning technology, which adopts the generation of cavitation phenomena induced in high-speed fluid and utilizes the extreme microscopic conditions of high temperature, high pressure, strong shock wave, high-speed microjet and the like generated when the cavitation bubbles are destroyed to realize the removal of the surface biological fouling, and has the advantages of safety, reliability, high efficiency and high efficiency in operation, The long-distance water transfer engineering biological fouling treatment process has the advantages of environmental protection, energy conservation, no secondary pollution to water quality and the like.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a long-distance water transfer engineering biological fouling treatment process.
Background
The long-distance water delivery project is an important cross-basin water resource allocation project in China, and has great strategic significance for realizing the north-south allocation of water resources and the reasonable allocation pattern of east-west mutual assistance in China, coordinating the sustainable development of east, middle and west regions in the northern region of China and ensuring the sustainable development.
The long water delivery line of the long-distance water delivery project is long, the structural forms of buildings are various, and factors such as geology, landform, climate, complex environment and strong manual intervention cause the main canal of the long-distance water delivery project to have certain ecological environmental problems and potential risks; taking the north-south water diversion center line project as an example, the main canal is a huge free-flow artificial open canal pump-connected concealed pipe water diversion project which spans multiple weather zones and multiple flow areas, the water delivery is mainly the open canal, and the side slopes and the canal bottom in the canal are lined with concrete. The water depth of the main canal is small, the illumination condition is good, when the disturbance condition of pollution sources such as nitrogen, phosphorus and the like occurs, the ecological environment of the main canal is easy to change, the structure and the dominant population of a biological community can be changed, particularly low aquatic organisms such as algae, shellfish and the like can grow and propagate rapidly under the appropriate condition, the monitoring result shows that the propagation phenomenon of algae such as diatom, golden algae and the like occurs in the main canal of the central line engineering of north-south water regulation, and the algae density has the characteristic of high north-south-low; in addition, a large amount of shellfish such as limnoperna lacustris is found in a lump in an area where the inner wall of a building is not smooth, such as an inverted siphon and a flume of a main canal.
The abnormal proliferation of the benthic algae on the channel side slope not only increases the outbreak risk of 'water bloom', but also leads to the increase of the accumulation amount of nutrient salts and organic matters of the sludge due to the sedimentation of the residues, and particularly in the slow flow channel section with poor hydrodynamic force, the sludge can obviously influence the water quality of a local water area. The limnoperna lacustris grows on water delivery pipe ducts and hydraulic buildings in an attached mode, so that the problems that the roughness of the pipelines is increased, the strength and the durability of a concrete structure are damaged, dissolved oxygen is reduced, water quality is affected to a certain degree, a metal structure is corroded, engineering safety is affected, the balance of an original aquatic food chain is affected and the like are caused.
In a word, for long-distance water delivery engineering, the problem of biofouling caused by benthic algae on the side slope of a channel and fresh water shellfishes on the surface of an inverted siphon and an aqueduct is widely existed at home and abroad, great potential safety hazards and economic losses are brought to water delivery safety and engineering safety, and the problem becomes a major problem to be solved urgently for long-distance water delivery engineering.
In recent years, aiming at the problem of biofouling caused by benthic algae and limnoperna lacustris in long-distance water transfer engineering, from the aspects of engineering application and experiments, application research is carried out based on physical, chemical and biological methods respectively, and the control effect of the benthic algae and limnoperna lacustris is evaluated. The physical treatment method is to kill or destroy the normal living environment of the larvae by manual or mechanical scraping, temperature change, water flow speed change, closed hypoxia, ultraviolet irradiation, electromagnetism, ultrasonic waves, current, negative electrode protection, sand blasting, high-pressure water jet and other physical modes to inhibit the adhesion and propagation of the larvae at the larvae stage of algae and limnoperna lacustris. The chemical treatment method is to add a molluscicide or a chemical coating such as chlorine, copper sulfate, sylvite, copper oxide, hydrogen peroxide, lime, ozone and the like into the water body to kill the limnoperna lacustris. Although the traditional chemical reagent killing method is convenient, the limnoperna lacustris has the instinct of self-protection by closing the shell in a severe environment, and excessive disinfection byproducts can cause secondary pollution to water. The chemical treatment method is suitable for closed water bodies, and is difficult to apply in engineering for open water bodies such as large-flow long-distance water transmission engineering and the like. The biological treatment method is to utilize the biological chain relationship in the ecological system to achieve the aim of preventing and controlling algae and limnoperna lacustris. One method is to breed fish fed by limnoperna lacustris, such as triangular bream, black carp and carp. The other method is to breed fishes feeding on algae, and considering that the limnoperna lacustris mainly feeds on diatom, the method can consider throwing filter-feeding fishes in the water body to reduce the food source of the limnoperna lacustris and limit the growth of the limnoperna lacustris by competing for foraging. The biological method is found by combining actual production and the life habits of fishes and is suitable for open water bodies with smaller mobility, such as reservoirs, lakes and the like. Compared with physical and chemical methods, the biological treatment method has long action period and higher requirement on water quality. The ecological hydraulics method is a biological fouling disposal method developed in recent years, and the method integrates comprehensive ecological hydraulics prevention and treatment technologies of adsorption, sedimentation and high-frequency pulsation, and specifically comprises the following steps: the biological attraction attachment method is characterized in that a biological attachment pool is built by utilizing the attachment characteristics of larvae of the limnoperna lacustris, and attached bamboo raft which is beneficial to the attachment growth of the larvae is installed; the biological sedimentation method is effective, but the sedimentation tank needs to occupy larger space, so that the application of the sedimentation tank is restricted; the high-frequency pulse killing method kills the larvae of the limnoperna lacustris by utilizing the turbulent flow generated by water flow passing through the pore plate, has good killing effect on the larvae, but the pore plate is always blocked if impurities exist in the water body, so that the normal operation of the killing device is influenced.
Conventional physical, chemical and biological treatment methods have various advantages and disadvantages in the aspects of killing effect, practicability, economic cost and the like. In conclusion, no mature method exists for treating the biofouling caused by algae and limnoperna lacustris at home and abroad. Widely used physical scraping, chemical killing and other methods are easy to cause problems of environmental pollution, structural wall surface damage and the like, and the biological method is suitable for open water bodies with smaller fluidity, such as reservoirs, lakes and the like. The sedimentation tank of the ecological hydraulics method needs to occupy larger space, and the application of the sedimentation tank is restricted. Therefore, for the problem of biological fouling in long-distance water delivery engineering, a new treatment method which is continuously effective, economic and reasonable and has no adverse effect on the water quality of water delivery is urgently needed to be found.
Disclosure of Invention
In order to solve the problems, the invention provides a long-distance water transfer engineering biofouling disposal process which overcomes the defects of the conventional physical, chemical and biological disposal methods in the disposal of long-distance water transfer engineering biofouling, adopts an underwater cavitation jet cleaning technology, realizes the removal of surface biofouling by inducing cavitation in high-speed fluid and utilizing extreme microscopic conditions such as high temperature, high pressure, strong shock wave, high-speed microjet and the like generated when cavitation bubbles are destroyed, and has the advantages of safety, reliability, high efficiency in operation, environmental protection, energy conservation, no secondary pollution to water quality and the like.
In order to realize the functions, the technical scheme adopted by the invention is as follows: a long-distance water transfer engineering biological fouling treatment process comprises the following steps:
1) the treatment process is based on a cavitation jet technology, a flow section which is sharply contracted is arranged in a cavitation jet nozzle, so that cavitation is induced in liquid jet and cavitation bubbles grow, and when jet containing the cavitation bubbles impacts the surface of an object, the extremely microscopic conditions of high temperature, high pressure, strong shock waves and high-speed micro-jet generated when the cavitation bubbles are broken are utilized to remove the biofouling on the surface;
2) for a working area with narrow space and complex surface shape: the cavitation jet nozzle is arranged at the head of the high-pressure spray gun, when high-pressure water flow enters from a water inlet of the high-pressure spray gun, the control valve control handle controls the cavitation jet device to be opened and closed, and the cavitation jet device is clamped by a manual or matched cleaning device to remove biological fouling such as algae or limnoperna lacustris existing in a narrow and complicated-surface-shape operation area;
3) for spatially flat work areas: the cavitation jet nozzle is arranged on the flushing rod or the cleaning disc, and biological fouling such as algae or limnoperna lacustris existing in the leveling operation area is removed by manpower or a matched cleaning device.
Further, step 2) a reverse balance nozzle is arranged at the tail part of the high-pressure spray gun, the reverse balance nozzle and the cavitation jet nozzle are arranged on the same straight line, when high-pressure water flow is introduced from the water inlet of the high-pressure spray gun, the control valve controls the opening and closing of the cavitation jet device, a high-pressure water path is introduced into the reverse balance nozzle, the jet direction of the reverse balance nozzle is opposite to that of the cavitation jet, the reaction force of the water jet is buffered, and the cleaning device is manually or matched with the cleaning device: such as a movable cleaning trolley, an unmanned remote control submersible vehicle or an underwater robot for clamping, and removing biological fouling such as algae or limnoperna lacustris and the like in a narrow and complicated surface shape operation area.
Further, the cavitation jet nozzles in the step 3) are straight-line cavitation jet nozzles which are uniformly arranged on the flushing rod at equal intervals, and the flushing rod is cleaned by a manual or matched cleaning device: for example, a movable cleaning trolley, an unmanned remote control submersible or an underwater robot are used for clamping to remove biological fouling substances such as algae or limnoperna lacustris and the like in a leveling operation area, compared with a cavitation jet device based on a high-pressure spray gun, the arrangement mode is higher in operation efficiency and simple, but if the distance between two in-line cavitation jet nozzles is too large, the problem of poor removal effect exists.
Further, the cleaning disc in the step 3) comprises a rotating body, a spray rod, a cavitation jet nozzle and a fixing device, wherein the rotating body is arranged on the fixing device, one end of the spray rod is arranged on the rotating body, the cavitation jet nozzle is obliquely arranged at the other end of the spray rod, the cavitation jet nozzle and the spray rod are arranged at a certain angle, when high-pressure water flow is introduced into each spray rod and the rotating cavitation jet nozzle through the rotating body, the water flow with cavitation bubbles is sprayed out from the cavitation jet nozzle, when the cavitation jet nozzle is used for cleaning an operation surface, the reaction force of the water flow generates a driving torque, the driving torque acts on the spray rod and a transfer part of the rotating body through the nozzle, so that high-speed rotation is generated, when the cleaning disc device moves forwards under the action of carriers such as a movable cleaning trolley, an unmanned remote control submersible vehicle or an underwater robot, the action area of the nozzle is in a strip, the working efficiency of the cavitation jet flow cleaning device is effectively improved from the surface.
Further, the cavitation jet nozzle is a rotary cavitation jet nozzle.
Furthermore, the spray lance is equipped with a plurality of groups, and a plurality of groups the spray lance is the annular angle of equalling evenly to be located on the rotator.
The invention adopts the structure to obtain the following beneficial effects: the treatment process for the biological fouling in the long-distance water transfer engineering is simple to operate, compact in mechanism and reasonable in design, and is based on the underwater cavitation jet technology, inducing cavitation in the liquid jet and allowing cavitation bubbles to grow, when the jet containing the cavitation bubbles impacts the surface of the object, the removal of biological fouling such as algae or limnoperna lacustris is realized by utilizing extreme microscopic conditions such as high temperature, high pressure, strong shock wave, high-speed microjet and the like generated when cavitation bubbles are broken, the method has the advantages of safety, reliability, high efficiency of operation, environmental protection, energy conservation, no secondary pollution to water quality and the like, the method has a good effect of removing the biofouling caused by algae or limnoperna lacustris in the long-distance water delivery engineering, is environment-friendly in the removing process, meets the requirement of ecological removal of the biofouling, and has great significance for ensuring the water quality and the water delivery safety of the long-distance water delivery engineering channel.
Drawings
FIG. 1 is a schematic diagram of a cavitation jet nozzle cavitation bubble formation process of a long-distance water transfer engineering biofouling treatment process of the present invention;
FIG. 2 is a schematic diagram of collapse impact near the cavitation bubble cleaning surface of a long-distance water transfer engineering biofouling treatment process of the present invention;
FIG. 3 is a front view of a high pressure spray gun for the treatment of biofouling in long distance water transfer projects according to the present invention;
FIG. 4 is a front view of a high pressure spray gun with a reverse balancing device for a long distance water diversion engineering biofouling treatment process of the present invention;
FIG. 5 is a front view of a rinse rod of a long distance water diversion engineering biofouling treatment process of the present invention;
FIG. 6 is a perspective view of a flush lever for a long distance water transfer engineering biofouling treatment process of the present invention;
FIG. 7 is a front view of a cleaning pan for a long distance water diversion project biofouling treatment process of the present invention;
FIG. 8 is a top view of a cleaning pan for a long distance water diversion project biofouling treatment process of the present invention;
fig. 9 is an isometric view of a cleaning pan for a long distance water diversion project biofouling treatment process of the present invention.
The device comprises a nozzle body 1, a nozzle body 2, a contraction section 3, cavitation bubbles 4, a cavitation jet nozzle 5, a high-pressure spray gun 6, a control valve 7, a water inlet 8, a reverse balance nozzle 21, a flushing rod 22, an in-line cavitation jet nozzle 31, a rotating body 32, a spray rod 33, a rotary cavitation jet nozzle 34 and a fixing device.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 9, the long-distance water transfer engineering biofouling treatment process of the present invention includes the following steps:
1) the cavitation jet nozzle 4 is internally provided with a rapidly contracted flow section 2, so that cavitation is induced in liquid jet and cavitation bubbles grow, and when jet containing the cavitation bubbles impacts the surface of an object, the extreme microscopic conditions of high temperature, high pressure, strong impact wave and high-speed microjet generated when the cavitation bubbles 3 are broken are utilized to remove the biofouling on the surface;
2) for a working area with narrow space and complex surface shape: the cavitation jet nozzle 4 is arranged at the head of the high-pressure spray gun 5, when high-pressure water flow is introduced from a water inlet 7 of the high-pressure spray gun 5, the control valve 6 controls the handle to control the cavitation jet device to be opened and closed, and the cavitation jet device is clamped by a manual or matched cleaning device to remove biological fouling substances such as algae or limnoperna lacustris existing in a narrow and complicated-surface-shape operation area;
3) for spatially flat work areas: the cavitation jet nozzle 4 is installed on the flushing rod 21 or the cleaning disc, and biological fouling such as algae or limnoperna lacustris existing in the leveling operation area is removed by manual work or a matched cleaning device.
And 2) a reverse balance nozzle 8 is arranged at the tail part of the high-pressure spray gun 5, and the reverse balance nozzle 8 and the cavitation jet nozzle 4 are arranged on the same straight line.
The cavitation jet nozzles 4 in the step 3) are straight cavitation jet nozzles 22, and the straight cavitation jet nozzles 22 are uniformly arranged on the washing rod 21 at equal intervals.
The cleaning disc in the step 3) comprises a rotating body 31, a spray rod 32, a cavitation jet nozzle 4 and a fixing device 34, wherein the rotating body 31 is arranged on the fixing device 34, one end of the spray rod 32 is arranged on the rotating body 31, and the cavitation jet nozzle 4 is obliquely arranged at the other end of the spray rod 32.
The cavitation jet nozzle 4 is a rotary cavitation jet nozzle 33.
The spray rod 32 is provided with a plurality of groups, and the spray rods 32 are uniformly arranged on the rotating body 31 in an annular shape at equal angles.
The long-distance water transfer engineering biological fouling treatment process based on the underwater cavitation jet cleaning technology has the following basic principle: when the local absolute pressure of the liquid is reduced to the saturated vapor pressure, the air dissolved in the liquid is first separated into bubbles and released from the liquid, and when the pressure is further reduced, the liquid pressure itself is vaporized, so-called "cavitation" is formed. The cavitation condition is high speed and low pressure in local area, the basic principle of cavitation jet is to induce cavitation in liquid jet and make cavitation grow, when the jet containing such cavitation impacts the surface of object, it is broken near the surface of object, because the collapse of cavitation takes place in the moment (microsecond level), so that it can produce very high instantaneous pressure locally, and the repeated impact action caused by very high pressure produced by cavitation which is broken continuously in water flow can make the biological defilement of algae or limnoperna lacustris, etc. on the surface of object quickly break down, and by reasonably selecting system pressure, nozzle structure and spray distance, it can ensure that the surface layer is not damaged, and can remove the biological defilement of algae or limnoperna lacustris, etc.
The following describes embodiments of the present invention with reference to the drawings.
Referring to fig. 1 and 2, when a high-pressure water jet passes through a cavitation jet nozzle 4, due to a sharply constricted flow cross section 2 in the nozzle, a high velocity and a low pressure are generated in the local area, and when the local absolute pressure of the liquid is reduced to a saturated vapor pressure, air dissolved in the liquid is first separated into bubbles and released from the liquid, and when the pressure is further reduced, the liquid pressure itself is vaporized, so-called "cavitation" is formed. When the jet flow containing the vacuoles impacts the surface of an object to which the algae or the limnoperna lacustris are attached, the vacuoles are broken near the surface of the object due to the pressure rise of the area, extremely high instantaneous pressure is generated locally due to the fact that the cavitation is broken instantaneously (on the order of microseconds), and biological fouling such as the algae or the limnoperna lacustris on the surface of the object is quickly damaged due to repeated impact action caused by the extremely high pressure generated by the constantly broken cavitation in the water flow.
By reasonably selecting the system pressure, the nozzle structure and the spraying distance, the biological fouling such as surface algae or limnoperna lacustris can be removed under the condition of not damaging a surface layer.
Referring to fig. 3, for an operation area with a narrow space and a complex surface shape, the cavitation jet nozzle 4 is installed at the head of the high-pressure spray gun 5, and when high-pressure water flows through the water inlet 7 of the high-pressure spray gun 5, the control handle of the control valve 6 controls the opening and closing of the cavitation jet device. By manual or matched cleaning devices: such as a movable cleaning trolley, an unmanned remote control submersible vehicle or an underwater robot for clamping, and removing biological fouling such as algae or limnoperna lacustris and the like in a narrow and complicated surface shape operation area. The arrangement mode of the high-pressure spray gun 5 is simple in structure, but the clamping device is stressed greatly due to the reaction force of the water jet when cleaning operation is carried out.
Referring to fig. 4, in order to buffer the reaction force of the water jet, a reverse balance nozzle 8 is arranged at the tail of the high-pressure spray gun 5, the reverse balance nozzle 8 and the cavitation jet nozzle 4 are arranged on the same straight line, when the cavitation jet cleaning operation is carried out, a high-pressure water path is introduced into the reverse balance nozzle 8, and the jet direction of the reverse balance nozzle is opposite to the cavitation jet direction. The arrangement mode can effectively balance the reaction force of the water jet during cavitation jet flow cleaning operation, thereby reducing the intensity of manual operation or simplifying the complexity of the clamping mechanism of the unmanned remote control submersible or the underwater robot.
Referring to fig. 5 and 6, for a spatially flat work area, in order to improve the cleaning efficiency, the in-line cavitation jet nozzles 22 are uniformly arranged on the washing rod 21 at certain intervals, and are cleaned by a manual or matched cleaning device: such as a movable cleaning trolley, an unmanned remote control submersible vehicle or an underwater robot for clamping, and removing biological fouling such as algae or limnoperna lacustris and the like in a leveling operation area. Compared with the cavitation jet device based on the high-pressure spray gun 5, the arrangement mode is higher in working efficiency and simple, but the problem of poor cleaning effect exists between two straight-line cavitation jet nozzles 22 if the distance is too large.
Referring to fig. 7, 8 and 9, in order to improve the existence of the cavitation jet device in the arrangement mode of the flushing rod 21, for a flat working area, in order to improve the cleaning efficiency, a rotary cavitation jet nozzle 33 is installed on a spray rod 32, the spray rod 32 generally comprises 2-5 groups, the spray rod 32 is uniformly arranged on the rotating body 31 in the circumferential direction, and the cavitation jet nozzle 4 forms a certain included angle with the center line of the rotating body 31. When high-pressure water flow is introduced into each spray rod 32 and the rotating cavitation jet nozzle 33 by the rotating body 31, the water flow with the cavitation bubbles 3 is sprayed out from the cavitation jet nozzle 4, and when the water flow is applied to a work surface to be cleaned, the reaction force of the water flow generates a driving torque, and the driving torque is applied to the spray rod 32 and a transfer part of the rotating body 31 through the nozzle, so that high-speed rotation is generated. When the cleaning disc device moves forwards under the action of carriers such as a movable cleaning trolley, an unmanned remote control submersible or an underwater robot, the action area of the nozzle is distributed in a band shape due to the high-speed rotation of the rotating assembly, and the working efficiency of the cavitation jet flow cleaning device is effectively improved from the surface.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A long-distance water transfer engineering biological fouling treatment process is characterized by comprising the following steps:
1) the treatment process is based on a cavitation jet technology, a flow section which is sharply contracted is arranged in a cavitation jet nozzle, so that cavitation is induced in liquid jet and cavitation bubbles grow, and when jet containing the cavitation bubbles impacts the surface of an object, the extremely microscopic conditions of high temperature, high pressure, strong shock waves and high-speed micro-jet generated when the cavitation bubbles are broken are utilized to remove the biofouling on the surface;
2) for a working area with narrow space and complex surface shape: the cavitation jet nozzle is arranged at the head of the high-pressure spray gun, when high-pressure water flow enters from a water inlet of the high-pressure spray gun, the control valve control handle controls the cavitation jet device to be opened and closed, and the cavitation jet device is clamped by a manual or matched cleaning device to remove biological fouling such as algae or limnoperna lacustris existing in a narrow and complicated-surface-shape operation area;
3) for spatially flat work areas: the cavitation jet nozzle is arranged on the flushing rod or the cleaning disc, and biological fouling such as algae or limnoperna lacustris existing in the leveling operation area is removed by manpower or a matched cleaning device.
2. The long-distance water transfer engineering biofouling treatment process according to claim 1, wherein a reverse balance nozzle is arranged at the tail of the high-pressure spray gun in step 2), and the reverse balance nozzle and the cavitation jet nozzle are arranged on the same straight line.
3. The long distance water transfer engineering biofouling treatment process according to claim 1, wherein the cavitation jet nozzles of step 3) are in-line cavitation jet nozzles, and the in-line cavitation jet nozzles are uniformly arranged on the flushing rod at equal intervals.
4. The long distance water transfer engineering biofouling treatment process of claim 1, wherein the wash tray of step 3) comprises a rotating body, a spray bar, a cavitation jet nozzle and a fixing device, wherein the rotating body is arranged on the fixing device, one end of the spray bar is arranged on the rotating body, and the cavitation jet nozzle is obliquely arranged on the other end of the spray bar.
5. The long distance water transfer engineering biofouling treatment process of claim 4, wherein said cavitation jet nozzle is a rotating cavitation jet nozzle.
6. The long-distance water diversion engineering biofouling treatment process according to claim 4, wherein said spray bars are provided in groups, and said groups of spray bars are uniformly arranged on the rotating body in a ring shape with equal angles.
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| CN109777935A (en) * | 2019-02-25 | 2019-05-21 | 江苏大学 | A kind of device and method strengthened for high pressure cavitation jet |
| CN109837383A (en) * | 2019-04-19 | 2019-06-04 | 徐州万达回转支承有限公司 | A kind of axial workpiece cavitation jet intensifying device and application method |
| CN110512681A (en) * | 2019-08-30 | 2019-11-29 | 黄河水利委员会黄河机械厂 | For removing the underwater cavitating jet cleaning device of channel side slopes algal gel mixture |
| CN211037114U (en) * | 2019-08-30 | 2020-07-17 | 南水北调中线干线工程建设管理局河南分局 | Underwater cavitation jet cleaning device for removing channel side slope algae mud mixture |
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2020
- 2020-11-03 CN CN202011212591.0A patent/CN112645407A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777935A (en) * | 2019-02-25 | 2019-05-21 | 江苏大学 | A kind of device and method strengthened for high pressure cavitation jet |
| CN109837383A (en) * | 2019-04-19 | 2019-06-04 | 徐州万达回转支承有限公司 | A kind of axial workpiece cavitation jet intensifying device and application method |
| CN110512681A (en) * | 2019-08-30 | 2019-11-29 | 黄河水利委员会黄河机械厂 | For removing the underwater cavitating jet cleaning device of channel side slopes algal gel mixture |
| CN211037114U (en) * | 2019-08-30 | 2020-07-17 | 南水北调中线干线工程建设管理局河南分局 | Underwater cavitation jet cleaning device for removing channel side slope algae mud mixture |
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Application publication date: 20210413 |
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