CN113007146A - Water pump steam-mixing super-cavitation-preventing and noise-reducing device - Google Patents
Water pump steam-mixing super-cavitation-preventing and noise-reducing device Download PDFInfo
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- CN113007146A CN113007146A CN202110416274.9A CN202110416274A CN113007146A CN 113007146 A CN113007146 A CN 113007146A CN 202110416274 A CN202110416274 A CN 202110416274A CN 113007146 A CN113007146 A CN 113007146A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 257
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000009834 vaporization Methods 0.000 claims abstract description 8
- 230000008016 vaporization Effects 0.000 claims abstract description 8
- 230000002265 prevention Effects 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 claims 1
- 229960000074 biopharmaceutical Drugs 0.000 abstract description 2
- 239000003651 drinking water Substances 0.000 abstract description 2
- 235000020188 drinking water Nutrition 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000005065 mining Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 239000013535 sea water Substances 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 abstract description 2
- 230000003628 erosive effect Effects 0.000 description 9
- 239000012530 fluid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of water pumps, in particular to a novel water pump steam-mixing super-cavitation anti-cavitation and noise reduction device, which is characterized in that a bypass pipe is utilized to connect an outlet of a water pump with a water outlet pipe, and water vapor with higher pressure in the water outlet pipe is introduced into the outlet of the water pump, so that steam mixing is carried out on the outlet of the water pump to form a super-cavitation phenomenon, the local pressure of a steam mixing area is improved, the cavitation number is effectively reduced, the cavitation bubble collapse caused by the fact that the vaporization pressure of liquid flowing through the water pump is lower than the vaporization pressure of medium temperature is obviously reduced, the cavitation bubble collapse is further caused, meanwhile, noise and vibration generated by cavitation are greatly reduced, and the operation. The invention has the advantages of simple structure, convenient processing and installation, low later maintenance cost and the like; the invention has wide application, is not only suitable for common pure water pumps, drinking water pumps, sea water pumps and other devices, but also can be used for water pump systems in the fields of mining, metallurgy, ships, refrigeration systems, sewage treatment, agriculture, biopharmaceuticals and the like.
Description
Technical Field
The invention relates to the technical field of water pumps, in particular to a novel water pump steam-mixing super-cavitation anti-cavitation and noise reduction device, which is characterized in that a bypass pipe is utilized to connect an outlet of a water pump with an outlet pipe, and water vapor with higher pressure in the outlet pipe is introduced into the outlet of the water pump, so that steam mixing is carried out on the outlet of the water pump to form a super-cavitation phenomenon, the local pressure of a steam mixing area is improved, the cavitation number is effectively reduced, the cavitation phenomenon caused by collapse of cavitation bubbles due to the fact that the vaporization pressure of liquid flowing through the water pump is lower than that of medium temperature is remarkably reduced, and meanwhile, noise and vibration generated by cavitation are greatly reduced. The water vapor is converged with the water in the water outlet pipe and then flows back to the water outlet pipe, and the fluid conveying circulation is completed.
Background
When liquid flows in the water pump, if the local pressure is lower than a certain value, bubbles or vapor nuclei existing in impurities, tiny solid particles or in a seam of a contact surface of the liquid and the solid in the liquid can be rapidly generated to be visible to human eyes, and for the sake of simplicity, the vapor and the vapor nuclei are collectively called as the vapor nuclei. The gas core enters a low-pressure area to generate cavitation bubbles, and when the cavitation bubbles reach a higher-pressure area along with liquid flow, the cavitation bubbles are compressed by surrounding liquid and are subjected to rebound expansion until finally collapsing. The damage to the water pump caused by the collapse of the cavitation bubbles is called cavitation. When the cavitation bubbles are coagulated and broken, liquid particles fill the cavities at a high speed, a strong impact effect is generated at the moment, the metal surface is hit at a high impact frequency, the impact stress can reach hundreds of to thousands of atmospheric pressures, the impact frequency can reach thousands of times per second, and the metal wall can be punctured seriously. The cavitation bubbles and the cavitation bubble rupture in the water pump subject the flow passage components to damage is the cavitation process in the water pump. After the water pump generates cavitation, except for damaging the flow passage component, the water pump also can generate noise and vibration and cause the performance of the pump to be reduced, and liquid in the pump can be interrupted in serious cases and the pump cannot work normally. The bypass pipe is used for connecting the outlet of the water pump with the water outlet pipe, and water vapor with high pressure in the water outlet pipe is introduced into the outlet of the water pump, so that the water vapor is mixed at the inlet of the water pump to form a super-cavitation phenomenon, the local pressure of the inlet of the water pump is improved, the cavitation number is effectively reduced, the pressure of cavitation collapse is obviously reduced, the cavitation phenomenon of preventing the water pump from generating cavitation is prevented, and meanwhile, the effects of reducing vibration and noise generated by cavitation are achieved.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the technical problems that the existing water pump device can generate cavitation, flow noise, vibration and the like in the working process, the cavitation prevention and noise reduction device which does not affect the liquid conveying effect of the water pump, is simple, convenient and feasible and can effectively reduce the cavitation phenomenon of the water pump and the noise and vibration of the water pump is designed, so that the running quality of the whole water pump is improved, and the risk of damaging the water pump due to cavitation is reduced.
The theoretical basis of the invention is as follows: experiments and researches are carried out by a large number of scholars, and a conclusion is drawn that the local pressure of a steam mixing area can be improved by mixing steam, the cavitation number is effectively reduced, the pressure of cavitation bubble collapse is obviously reduced, the cavitation noise and vibration phenomena of a water pump are greatly reduced, when the cavitation number is reduced to a certain degree, cavitation bubble groups cannot collapse, performance reduction and damage caused by the cavitation of the water pump are greatly avoided, the noise level is reduced on the contrary, and when the pressure is reduced to be below the saturated vapor pressure of a medium, cavitation bubbles cannot be completely collapsed, so that the explosion noise is greatly reduced. In addition, the vibration frequency is also reduced accordingly.
The technical scheme adopted by the invention is as follows: in the invention, in the working process of the water pump, the outlet of the water pump is connected with the water outlet pipe by using the bypass pipe, and the water vapor with higher pressure in the water outlet pipe is introduced to the outlet of the water pump, so that the cavitation erosion phenomenon caused by the collapse of cavitation bubbles formed by the liquid flowing through the water pump under the vaporization pressure lower than the medium temperature is reduced, and simultaneously, the noise and the vibration generated by the cavitation erosion are greatly reduced. The water vapor is converged with the water in the water outlet pipe and then flows back to the water outlet pipe, and the fluid conveying circulation is completed.
The invention relates to a water pump fluid conveying system which utilizes a bypass pipe at the outlet of a water pump to prevent cavitation of the water pump and reduce noise and vibration, namely on the basis of ensuring the performance coefficient of the water pump, in order to prevent cavitation of the water pump, reduce noise and vibration, the bypass pipe is added on the basis of the original common water pump fluid conveying system, water vapor with higher pressure in a water outlet pipe is introduced to the outlet of the water pump, the water vapor is mixed with the water in the water outlet pipe to form a super-cavitation phenomenon, and the water vapor flows back to the water outlet pipe after being mixed with the water in the water outlet pipe to finish fluid conveying circulation. The device can avoid the cavitation of the water pump and reduce the noise and vibration caused by the cavitation.
The water pump steam-mixing super-cavitation anti-cavitation and noise reduction device comprises a water inlet pipe, a water pump, a water outlet pipe and 1-10 by-pass pipes, wherein two ends of each by-pass pipe are communicated with an outlet of the water pump and the water outlet pipe to form a by-pass loop, and the distance between two ports of the by-pass loop is 200mm-800 mm.
After water in the water pump steam-doped super-cavitation prevention and noise reduction device passes through the water pump, the liquid can generate cavitation bubbles when the pressure is reduced to the vaporization pressure at a certain temperature under the certain temperature. These bubbles move forward with the liquid, and at some high pressure, the high pressure liquid surrounding the bubbles causes the bubbles to collapse or collapse abruptly. When the bubbles are broken, the liquid body points fill the cavities at high speed, and impact with each other to form water hammer, so that the flow passage parts in the water pump are corroded and damaged to cause cavitation, and simultaneously, the flow passage parts are continuously damaged in a high-pressure area to generate strong water hammer, so that noise and vibration are generated. The bypass pipe is used for connecting the outlet of the water pump with the water outlet pipe, and the water vapor with higher pressure in the water outlet pipe is introduced into the outlet of the water pump, so that the water vapor is mixed at the outlet of the water pump to form the supercavitation effect. The cavitation erosion phenomenon caused by cavitation collapse formed by the vaporization pressure of the liquid flowing through the water pump at the temperature lower than the medium temperature is obviously reduced, and meanwhile, the noise and the vibration generated by the cavitation erosion are greatly reduced. The water vapor is converged with the water in the water outlet pipe and then flows back to the water outlet pipe, and the fluid conveying circulation is completed. The connection mode of each part is welding and threaded connection.
The bypass pipe is connected with the outlet of the water pump and the water outlet pipe, the inner diameter of the bypass pipe is 5mm-50mm, the outer diameter of the bypass pipe is 5.6mm-57mm, the length of the bypass pipe extending into the water outlet pipe is 5mm-40mm, the vertical length of the bypass pipe is 30mm-200mm, and the number of the bypass pipes is 1-10.
One end of the by-pass pipe is inserted from the pipe wall of the water outlet pipe at the outlet of the water pump, the distance between an insertion opening and the outlet end of the water pump is 20mm-300mm, the length of the inserted water outlet pipe is 5mm-50mm, the total length of the by-pass pipe is 200mm-800mm, and a connection mode of welding and threaded connection is adopted; the other end is inserted from the upper end of the pipe wall of the water outlet pipe along the water flow direction, the inner diameter of the bypass pipe is 5mm-50mm, the outer diameter is 5.6mm-57mm, the length of the inserted water outlet pipe is 5mm-50mm, and the bypass pipe is connected by adopting a connection mode of welding and threaded connection, and the number of the bypass pipes is 1-10.
The pipe material is a metal pipeline suitable for a water pump to convey liquid.
The outer diameter of the water inlet pipe and the water outlet pipe is 32-219mm, the wall thickness is 3.5-9.5mm, the inner diameter is 25-200mm, and the length is 1000-50000 mm.
The device arranges on the outlet pipe of water pump exit, collapses the low-pressure region through destroying the cavitation bubble that the water pump import formed, prevents that the water pump from producing the cavitation erosion, reduces simultaneously because of noise and vibration that the cavitation erosion produced, improves the operation quality of water pump.
The invention has the beneficial effects that: the invention fully utilizes the theoretical basis of steam-doped supercavitation dynamics and the like, so that the local pressure at the outlet of the water pump is improved, and the supercavitation phenomenon is formed; researches and experiments show that the steam mixing can increase the local pressure of a steam mixing area, effectively reduce the cavitation number and obviously reduce the pressure when cavitation bubbles collapse, thereby preventing the water pump from generating a cavitation phenomenon, simultaneously achieving the effect of reducing vibration and noise generated by cavitation and improving the operation quality of the water pump; in addition, the invention has the advantages of simple structure, convenient processing and installation, low cost, low later maintenance cost and the like.
Drawings
FIG. 1 is a schematic diagram of a water pump steam-doped supercavitation cavitation prevention and noise reduction device of the present invention;
in the figure: 1-water inlet pipe, 2-water pump, 3-water outlet pipe and 4-bypass pipe.
FIG. 2 is a schematic connection diagram of a single bypass pipe steam-mixing supercavitation cavitation prevention and noise reduction device of the water pump of the present invention;
FIG. 3 is a schematic connection diagram of a double bypass pipe steam-mixing supercavitation cavitation prevention and noise reduction device of a water pump according to the present invention;
in the figure: 1-water pump motor, 2-water pump bracket, 3-water inlet pipe, 4-water outlet pipe, 5-water flow direction, 6-bypass pipe a, 7-bypass pipe b.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1, fig. 1 is a schematic diagram of the steam-doped super-cavitation erosion prevention and noise reduction device of the water pump, which includes: the principle of the invention is that a bypass pipe is connected with an outlet of a water pump and a water outlet pipe, water vapor with higher pressure in the water outlet pipe of the water pump is introduced to the inlet of the water pump by utilizing the bypass pipe, the water vapor is mixed with the water to form a super-cavitation phenomenon, and the water vapor is converged with the water in the water outlet pipe and then flows back to the water outlet pipe to complete fluid conveying circulation. The device can avoid the cavitation of the water pump and reduce the noise and vibration phenomena caused by the cavitation.
The water pipe refers to a pipeline which can be used for a water pump to convey liquid, the pipe diameter of the water pipe is selected according to the system flow and the requirements of an inlet and an outlet of the water pump, the outer diameter of the water pipe is 32-219mm, the wall thickness is 3.5-9.5mm, the inner diameter is 25-200mm, and the length is 1000-50000 mm. (ii) a
The water pump refers to all mechanical devices which can be used for conveying liquid and pressurizing the liquid, is connected with the water inlet pipe and the water outlet pipe, and needs to be selected according to the flow and the lift of a designed system;
the bypass pipe is a pipeline consistent with a water pipe, is arranged on a water outlet pipe at the outlet of the water pump, and introduces water vapor with higher pressure in the water outlet pipe to the outlet of the water pump, so that the water vapor is mixed at the outlet of the water pump to form a super-cavitation effect. The cavitation erosion phenomenon caused by cavitation collapse formed by the vaporization pressure of the liquid flowing through the water pump at the temperature lower than the medium temperature is obviously reduced, and meanwhile, the noise and the vibration generated by the cavitation erosion are greatly reduced.
The water pump steam-mixing supercavitation cavitation prevention and noise reduction device also comprises a plurality of bypass pipes, and the number of the bypass pipes is 1-10. The bypass pipe can select different bypass pipe numbers and bypass pipe diameters according to the flow, so that the best bypass pipe number and bypass pipe diameter can be selected under different water pump flows and lifts, the proper steam mixing amount is ensured, the super-cavitation phenomenon is formed, the cavitation phenomenon of the water pump is restrained, and the noise and vibration of the water pump caused by cavitation are reduced.
Referring to fig. 2, the water pump pipe steam-doped super-cavitation anti-cavitation and noise reduction device mainly comprises a water pump motor 1, a water pump bracket 2, a water inlet pipe 3, a water outlet pipe 4, a water flow direction 5 and a bypass pipe a6, wherein the inner diameter of the bypass pipe a is 5-50 mm; the outer diameter of the bypass pipe a is 5.6-57mm, the total length of the bypass pipe a is 300mm, one end of the bypass pipe a is inserted into the pipe wall of the water outlet pipe at the outlet of the water pump, the distance between an insertion opening and the outlet of the water pump is 100mm, the length of the inserted water outlet pipe is 5mm, the other end of the bypass pipe a is inserted into the pipe wall of the water outlet pipe along the water flow direction, and the length of the inserted water outlet pipe is 5 mm; the connection modes of all parts are welding and threaded connection; the direction of the water flow coincides with the direction of the arrow shown by the direction of water flow 5.
Referring to fig. 3, the water pump steam-mixing supercavitation cavitation prevention and noise reduction device mainly comprises a water pump motor 1, a water pump bracket 2, a water inlet pipe 3, a water outlet pipe 4, a water flow direction 5, a bypass pipe a6 and a bypass pipe b 7; the outer diameter of the bypass pipe a is 5.6-57mm, the total length of the bypass pipe a is 300mm, one end of the bypass pipe a is inserted into the pipe wall of the water outlet pipe at the outlet of the water pump, the distance between an insertion opening and the outlet of the water pump is 100mm, the length of the inserted water outlet pipe is 5mm, the other end of the bypass pipe a is inserted into the pipe wall of the water outlet pipe along the water flow direction, and the length of the inserted water outlet pipe is 5 mm; the connection modes of all parts are welding and threaded connection; the outer diameter of the bypass pipe b is 5.6-57mm, the total length of the bypass pipe b is 300mm, one end of the bypass pipe b is inserted into the pipe wall of the water outlet pipe at the outlet of the water pump, the distance between an insertion opening and the outlet of the water pump is 90mm, the length of the inserted water outlet pipe is 5mm, the other end of the bypass pipe b is inserted into the pipe wall of the water outlet pipe along the water flow direction, and the length of the inserted water outlet pipe is 5 mm; the connection modes of all parts are welding and threaded connection; the direction of the water flow coincides with the direction of the arrow shown by the direction of water flow 5.
The steam-doped super-cavitation anti-cavitation and noise reduction device for the water pump comprises a water pump motor 1, a water pump bracket 2, a water inlet pipe 3, a water outlet pipe 4, a water flow direction 5, a bypass pipe a6 and a bypass pipe b7, wherein the above embodiment lists only express a plurality of embodiments of the invention, the description of which is more specific and detailed, but the invention cannot be understood as the limitation of the patent scope of the invention. It should be noted that, it is within the scope of the present invention to install a bypass pipe on the outlet pipe at the outlet of the water pump to suppress cavitation of the water pump, and to reduce noise and vibration of the water pump due to cavitation.
The invention has wide application, is not only suitable for common pure water pumps, drinking water pumps, sea water pumps and other devices, but also can be used for water pump systems in the fields of mining, metallurgy, ships, refrigeration systems, sewage treatment, agriculture, biopharmaceuticals and the like.
Claims (6)
1. The utility model provides a novel water pump mix vapour supercavitation cavitation prevention and fall device of making an uproar which characterized in that: the steam-doped super-cavitation anti-cavitation and noise reduction device of the water pump is characterized in that a bypass pipe is utilized to connect an outlet of the water pump with a water outlet pipe, and water vapor with higher pressure in the water outlet pipe is introduced into the outlet of the water pump, so that steam is doped at the outlet of the water pump to form a super-cavitation phenomenon, the local pressure of a steam-doped area is improved, the cavitation number is effectively reduced, the cavitation pressure of liquid flowing through the water pump is obviously reduced to be lower than the vaporization pressure of medium temperature, cavitation bubble collapse is formed to further cause the cavitation phenomenon, and meanwhile, the noise and vibration generated by cavitation are greatly reduced; the water pump steam-doped super-cavitation anti-cavitation and noise reduction device comprises a water pump motor (1), a water pump bracket (2), a water inlet pipe (3), a water outlet pipe (4), a water flow direction (5) and a bypass pipe (6); the two ends of the by-pass pipe are communicated with the outlet of the water pump and the water outlet pipe to form a by-pass loop.
2. The water pump steam-doped supercavitation cavitation prevention and noise reduction device according to claim 1, characterized in that: the bypass pipe is connected with the outlet of the water pump and the water outlet pipe, the outer diameter of the water pipe is 32-219mm, the wall thickness is 3.5-9.5mm, the inner diameter is 25-200mm, and the length is 1000 plus 50000 mm.
3. The water pump steam-doped supercavitation cavitation prevention and noise reduction device according to claim 1, characterized in that: the bypass pipe is connected with the outlet of the water pump and the water outlet pipe, the inner diameter of the bypass pipe is 5-50mm, the outer diameter of the bypass pipe is 5.6-57mm, the length of the bypass pipe extending into the water outlet pipe is 5-40 mm, the vertical length of the bypass pipe is 30-2000mm, the distance between two ports of a bypass loop is 800mm, and the number of the bypass pipes is 1-10.
4. The water pump steam-doped supercavitation cavitation prevention and noise reduction device according to claim 1, characterized in that: one end of the by-pass pipe is inserted from the pipe wall of the water outlet pipe at the outlet of the water pump, the distance between an insertion opening and the outlet end of the water pump is 20mm-300mm, the length of the inserted water outlet pipe is 5mm-50mm, the total length of the by-pass pipe is 200mm-800mm, and welding and threaded connection are adopted; the other end is inserted from the upper end of the pipe wall of the water outlet pipe along the water flow direction, the inner diameter of the bypass pipe is 5mm-50mm, the outer diameter is 5.6mm-57mm, the length of the inserted water outlet pipe is 5mm-50mm, and the bypass pipe is connected by adopting a welding and threaded connection mode, and the number of the bypass pipes is 1-10.
5. The water pump steam-doped supercavitation cavitation prevention and noise reduction device according to claim 1, characterized in that: the connection mode adopts welding and threaded connection; the bypass pipe is welded with the water outlet pipe and is connected with the water outlet pipe through threads; the pipe wall of the water outlet pipe at the outlet of the water pump at the two ends of the bypass pipe extends into the bypass pipe, and the bypass pipe is welded and connected together through threads, and the pipe material is a metal or nonmetal pipeline which can be used for conveying liquid by the water pump.
6. The water pump steam-doped supercavitation cavitation prevention and noise reduction device according to claim 1, characterized in that: when the flow of the water pump is large, the amount of mixed steam can be increased by increasing the number of the bypass pipes, and the phenomenon of mixed steam supercavitation is guaranteed to be formed, so that the cavitation of the water pump is restrained when the water flow is changed, and the noise and vibration of the water pump caused by the cavitation are reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416274.9A CN113007146A (en) | 2021-04-16 | 2021-04-16 | Water pump steam-mixing super-cavitation-preventing and noise-reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416274.9A CN113007146A (en) | 2021-04-16 | 2021-04-16 | Water pump steam-mixing super-cavitation-preventing and noise-reducing device |
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| CN113007146A true CN113007146A (en) | 2021-06-22 |
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| CN202110416274.9A Pending CN113007146A (en) | 2021-04-16 | 2021-04-16 | Water pump steam-mixing super-cavitation-preventing and noise-reducing device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1987123A (en) * | 2006-12-27 | 2007-06-27 | 武汉大学 | Device for improving liquid flow pump cavitation property |
| CN201473756U (en) * | 2009-06-25 | 2010-05-19 | 浙江美欣达印染集团股份有限公司 | Steam condensate recovery unit |
| US20160215778A1 (en) * | 2013-09-12 | 2016-07-28 | Ebara Corporation | Apparatus and method for alleviating and preventing cavitation surge of water supply conduit system |
| CN111707022A (en) * | 2020-05-19 | 2020-09-25 | 中南大学 | Capillary steam-mixing super-cavitation jet noise suppression device |
| CN111707023A (en) * | 2020-05-19 | 2020-09-25 | 中南大学 | Bidirectional expansion valve steam-mixing super-cavitation jet noise suppression device |
-
2021
- 2021-04-16 CN CN202110416274.9A patent/CN113007146A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1987123A (en) * | 2006-12-27 | 2007-06-27 | 武汉大学 | Device for improving liquid flow pump cavitation property |
| CN201473756U (en) * | 2009-06-25 | 2010-05-19 | 浙江美欣达印染集团股份有限公司 | Steam condensate recovery unit |
| US20160215778A1 (en) * | 2013-09-12 | 2016-07-28 | Ebara Corporation | Apparatus and method for alleviating and preventing cavitation surge of water supply conduit system |
| CN111707022A (en) * | 2020-05-19 | 2020-09-25 | 中南大学 | Capillary steam-mixing super-cavitation jet noise suppression device |
| CN111707023A (en) * | 2020-05-19 | 2020-09-25 | 中南大学 | Bidirectional expansion valve steam-mixing super-cavitation jet noise suppression device |
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