CN201045359Y - Fluidic jet pump for reducing vibration and noise - Google Patents
Fluidic jet pump for reducing vibration and noise Download PDFInfo
- Publication number
- CN201045359Y CN201045359Y CNU2007200849150U CN200720084915U CN201045359Y CN 201045359 Y CN201045359 Y CN 201045359Y CN U2007200849150 U CNU2007200849150 U CN U2007200849150U CN 200720084915 U CN200720084915 U CN 200720084915U CN 201045359 Y CN201045359 Y CN 201045359Y
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- jet pump
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Abstract
The utility model discloses a vibration and noise reduction liquid jet pump, and relates to a liquid jet pump. The structure of the utility model is that a load water takeover (1) and a jet nozzle (4) are connected and installed in a suction chamber (2) which is connected with a water absorption tube (3), and the suction chamber (2), a choke inlet tube (5), a choke tube (6), a diffusion tube (7) and an outflow tube are connected in turn. The utility model is characterized in that the choke tube (6) is connected with an air inlet tube (9) on which a valve (10) is arranged, concretely, the air inlet tube (9) is arranged between the one-forth portion and the three-fourth portion of the choke tube (6). The utility model has the advantages of simple structure, cheap cost, reliable operation and convenient manipulation. By utilizing the utility model, the vibration and noise of the liquid jet pump is effectively reduced, and the cavitation performance of the liquid jet pump is improved. Because the performance price ratio is high, the utility model can be widely applied to various liquid jet pumps.
Description
Technical field
The utility model relates to a kind of liquid-jet pump, relates in particular to a kind of liquid-jet pump that reduces vibration and noise.
Background technique
Liquid-jet pump is fluid conveying machine and the mix reaction equipment that a kind of turbulent fluctuation diffusion of utilizing rapid jet is transmitted energy and quality.
As Fig. 1, the typical structure of conventional liquid-jet pump (abbreviation Jet injector) comprises working water adapter (1), suction chamber (2), suction sleeve (3), nozzle (4), trunnion inlet duct (5), trunnion (6), diffusing tube (7) and outlet pipe (8); Working water adapter (1), nozzle (4) link to each other and are installed in the suction chamber (2); Suction chamber (2) is connected with suction sleeve (3), and suction chamber (2), trunnion inlet duct (5), trunnion (6), diffusing tube (7), outlet pipe (8) connect successively.
Owing to itself do not have moving element, that Jet injector has is simple in structure, easy processing, good airproof performance, be convenient to advantage such as maintenance, now has been widely used in national economy all departments.Especially under water, radiation, special occasions such as inflammable, explosive, Jet injector has special advantages, can produce huge economic and social benefit.
The cavitation problem of Jet injector is one of important topic of Jet injector research.The cavitation of Jet injector is different from other type of pump.Jet injector can not stop when cavitation took place, but under certain working pressure, along with the reduction of outlet pressure, the inhalation flow of Jet injector no longer increases, and remains on the certain value.When cavitation took place, Jet injector can produce strong noise and vibration, causes the rapid reduction of Jet injector and system effectiveness, even can have a strong impact on the safety and the economical operation of whole system.
Specifically, during the liquid jet pump work, because the reduction meeting of local compression at first forms micro gasification in the pump near the outlet of nozzle (4) and in the jet boundary layer in the trunnion (6).Micro gasification is crumbled and fall in trunnion (6) front end to central region with the main flow direction downstream flow.When the Jet injector outlet pressure reduced, steam bubble quantity showed increased formed the basicly stable cavitation cloud (steam bubble group) of shape, along with the further reduction of outlet pressure, and near expansion trunnion (6) outlet of cavitation cloud, and formation mixes vapour-liquid two-phase flow preferably.When the Jet injector cavitation took place, the flow velocity of this two-phase flow was higher, thus block liquid flowing in trunnion (6), thereby the Jet injector outlet pressure is when further descending, its inhalation flow no longer increases, but remains on the certain value.At this moment, steam bubble is crumbled and fall in a large number at the trunnion end, thereby produces violent vibration and noise.
In order to solve the cavitation problem of liquid-jet pump, forefathers have carried out a lot of researchs.The method that solves is concluded and is mainly at present:
1. increase the depth of immersion of Jet injector;
2. increase the area ratio of Jet injector;
3. reduce the working pressure of Jet injector;
4. optimize the shape of Jet injector nozzle and trunnion inlet, improve the condition that becomes a mandarin.
Wherein 1. method can increase engineering cost greatly; 2. and 3. method then can make Jet injector depart from optimum operating condition work, reduces its performance and efficient; What 4. method was improved is limited in scope.In a word, said method can improve the cavitation performance of Jet injector to a certain extent, but does not tackle the problem at its root.
Summary of the invention
The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect that prior art exists, and a kind of liquid-jet pump that reduces vibration and noise is provided.
The purpose of this utility model is achieved in that
During Jet injector generation cavitation, trunnion inside is negative pressure, and we are communicated with the moderate suction tude of a diameter at Jet injector trunnion middle part, on this pipe valve are housed.When proper functioning, close valve on the suction tude, Jet injector is worked as conventional Jet injector.When cavitation takes place, can open valve on the suction tude, aperture by regulating valve, extraneous an amount of air is with in the automatic suction pump, be inhaled into air with main flow direction downstream motion, at the peripheral one deck air cushion that forms of water cavitation cloud, the impact that this air cushion can reduce cavitation bubble greatly when crumbling and fall, reduce the noise and the vibration of Jet injector, thereby improve its cavitation performance.Experimental study shows, violent vibration and noise when said method can reduce the Jet injector cavitation greatly, under the position and the combination of best air inflow of best suction tude, therefore vibration and noise can be reduced to identical with background vibration and noise basically, are that a kind of simple and feasible, easy to operate reduction Jet injector vibrates and the new method of noise.
Specifically, as Fig. 2, the utility model comprises working water adapter 1, suction chamber 2, suction sleeve 3, nozzle 4, trunnion inlet duct 5, trunnion 6, diffusing tube 7 and outlet pipe 8, working water adapter (1), nozzle (4) link to each other and are installed in the suction chamber (2), suction chamber (2) is connected with suction sleeve (3), and suction chamber (2), trunnion inlet duct (5), trunnion (6), diffusing tube (7), outlet pipe (8) connect successively;
Be communicated with suction tude (9) on trunnion (6), suction tude (9) is provided with valve (10).
Working principle of the present utility model is: when cavitation takes place, trunnion (6) inside is negative pressure, ambient air automatically is inhaled in the trunnion (6) by suction tude (9), move with the main flow direction downstream, at the peripheral one deck air cushion that forms of the terminal cavitation bubble of trunnion (6), the impact that this air cushion can reduce cavitation bubble greatly when crumbling and fall, thus the noise and the vibration of Jet injector reduced.
The utility model and conventional Jet injector difference are that the middle part of trunnion (6) is communicated with suction tude (9), valve (10) is housed on the suction tude (9) controls the size that sucks trunnion (6) gas inside flow.
During proper functioning, valve (10) is closed, cut-out is drawn into trunnion (6) gas inside by suction tude (9) and flows.
Produce violent vibration and noise in case find Jet injector, promptly know Jet injector generation cavitation, can open valve (10), by regulating its aperture, just can significantly reduce the vibration and the noise of Jet injector, thereby improve the cavitation performance of Jet injector.
The utlity model has following advantage and good effect:
1, simple in structure, with low cost, only on the basis of conventional Jet injector, increased suction tude (9) and valve (10);
2, reliable operation, the vibration and the noise that are produced in the time of significantly reducing Jet injector generation cavitation improve the cavitation performance of liquid-jet pump effectively.
3, owing to the price performance height, can be widely used among all kinds of liquid-jet pumps.
Description of drawings
Fig. 1 is the structural drawing of conventional Jet injector;
Fig. 2 is the utility model structural drawing.
Wherein:
The 1-working water is taken over; The 2-suction chamber; The 3-suction sleeve;
The 4-nozzle; 5-trunnion inlet duct; The 6-trunnion;
The 7-diffusing tube; The 8-outlet pipe; The 9-suction tude;
The 10-valve.
Embodiment
As Fig. 2, suction tude (9) is arranged on the middle part of trunnion (6), valve (10) is housed on the suction tude (9) controls the size that sucks gas flow.
It is preferable that suction tude (9) is arranged on the position of trunnion (6) 1/4～3/4.
Jet from the mobile similar crossing current of suction tude (9) inhaled air trunnion (6) flows.Because the main flow flow velocity is higher, the gas of suction is very fast with the main flow direction downstream flow.If the position that suction tude (9) is laid is too near apart from trunnion (6) inlet end, the negative pressure that should locate when cavitation is little, and amount of air drawn is less, and can mix with main flow, and the effect of air cushion is limited; If the position that suction tude is laid is too far away apart from trunnion inlet end, inhaled air can flow into rapidly in the diffusing tube with main flow when cavitation, and the effect of the air cushion of generation is also undesirable.
Suction tude (9) is common metal pipe or plastic cement pipe, and the listing product is arranged.
Valve (10) has the listing product for valve commonly used.
Claims (2)
1. one kind is reduced the vibration and the liquid-jet pump of noise, comprise conventional liquid-jet pump, form by working water adapter (1), suction chamber (2), suction sleeve (3), nozzle (4), trunnion inlet duct (5), trunnion (6), diffusing tube (7), outlet pipe (8); Working water adapter (1), nozzle (4) link to each other and are installed in the suction chamber (2); Suction chamber (2) is connected with suction sleeve (3), and suction chamber (2), trunnion inlet duct (5), trunnion (6), diffusing tube (7), outlet pipe (8) connect successively;
It is characterized in that: be communicated with suction tude (9) on trunnion (6), suction tude (9) is provided with valve (10).
2. by the described a kind of liquid-jet pump that reduces vibration and noise of claim 1, it is characterized in that: suction tude (9) is arranged on the position of trunnion (6) 1/4～3/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200849150U CN201045359Y (en) | 2007-05-28 | 2007-05-28 | Fluidic jet pump for reducing vibration and noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200849150U CN201045359Y (en) | 2007-05-28 | 2007-05-28 | Fluidic jet pump for reducing vibration and noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201045359Y true CN201045359Y (en) | 2008-04-09 |
Family
ID=39308831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200849150U Expired - Fee Related CN201045359Y (en) | 2007-05-28 | 2007-05-28 | Fluidic jet pump for reducing vibration and noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201045359Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877432A (en) * | 2012-10-23 | 2013-01-16 | 武汉大学 | Water sucking machine for roads |
| CN103174686A (en) * | 2013-02-21 | 2013-06-26 | 北京朗新明环保科技有限公司 | Jet flow air lifting device |
| CN103244468A (en) * | 2013-04-17 | 2013-08-14 | 武汉大学 | Ejecting-type jet flow cavitation generator and cavitation cell disruption device |
| CN105909567A (en) * | 2016-06-15 | 2016-08-31 | 江苏大学 | Jet device capable of improving cavitation performance of jet type centrifugal pump |
| CN106438512A (en) * | 2016-11-08 | 2017-02-22 | 四川大学 | Ring-symmetry air supplementing device and method for reducing cavitation of liquid jet pump |
| CN108412815A (en) * | 2018-04-09 | 2018-08-17 | 大连申域流体机械有限公司 | Anti- cavitation fore pump |
| CN110467000A (en) * | 2019-09-18 | 2019-11-19 | 安徽奥利威泵阀机械有限公司 | A kind of potato beet delivery pump |
-
2007
- 2007-05-28 CN CNU2007200849150U patent/CN201045359Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877432A (en) * | 2012-10-23 | 2013-01-16 | 武汉大学 | Water sucking machine for roads |
| CN102877432B (en) * | 2012-10-23 | 2014-11-19 | 武汉大学 | Water sucking machine for roads |
| CN103174686A (en) * | 2013-02-21 | 2013-06-26 | 北京朗新明环保科技有限公司 | Jet flow air lifting device |
| CN103244468A (en) * | 2013-04-17 | 2013-08-14 | 武汉大学 | Ejecting-type jet flow cavitation generator and cavitation cell disruption device |
| CN103244468B (en) * | 2013-04-17 | 2015-11-04 | 武汉大学 | Injection type jet flow cavitation generator and cavitation cell breaking plant |
| CN105909567A (en) * | 2016-06-15 | 2016-08-31 | 江苏大学 | Jet device capable of improving cavitation performance of jet type centrifugal pump |
| CN105909567B (en) * | 2016-06-15 | 2018-08-21 | 江苏大学 | A kind of ejector improving jet-type centrifugal pump cavitation performance |
| CN106438512A (en) * | 2016-11-08 | 2017-02-22 | 四川大学 | Ring-symmetry air supplementing device and method for reducing cavitation of liquid jet pump |
| CN108412815A (en) * | 2018-04-09 | 2018-08-17 | 大连申域流体机械有限公司 | Anti- cavitation fore pump |
| CN110467000A (en) * | 2019-09-18 | 2019-11-19 | 安徽奥利威泵阀机械有限公司 | A kind of potato beet delivery pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080409 |