CN85102383B - Liquid-gas jet gas-exhauster with two-tage suction - Google Patents
Liquid-gas jet gas-exhauster with two-tage suctionInfo
- Publication number
- CN85102383B CN85102383B CN85102383A CN85102383A CN85102383B CN 85102383 B CN85102383 B CN 85102383B CN 85102383 A CN85102383 A CN 85102383A CN 85102383 A CN85102383 A CN 85102383A CN 85102383 B CN85102383 B CN 85102383B
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- liquid
- gas
- present
- pump
- suction
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- Jet Pumps And Other Pumps (AREA)
Abstract
The present invention relates to the class of a pump, which belongs to the technical field of liquid-gas jet exhaust. The present invention is composed of a water pump, a jet pump and a water tank, and aims to increase the efficiency of a liquid-gas jet pump so as to reduce energy consumption. The present invention is characterized in that a straight pipeline is arranged between a jet nozzle and a mixing pipe of the jet pump for changing fluid state, and the present invention is favourable for pumping air, fully and effectively transporting energy, and establishing and verifying the theoretical characteristic formula which is suitable for the structure so as to obtain the optimal design data of the added pipe and the original mixing pipe; a series of sample devices are made in this way, and compared with the existing similar devices, the actual-measurement performance of the present invention increases the inspiratory capacity by 1.0 to 1.5 times. The present invention is also suitable for the liquid-gas jet pump in other occasions, and the device can be used for making vacuum or positive pressure for transporting air.
Description
The present invention relates to a kind of jet exharster, particularly a kind of two-stage inhalant liquid-liquid-gas jet gas-exhauster with two-tage suction.
Existing liquid-gas jetting air exhauster is all by centrifugal water pump, and single-stage inhalant liquid-gas jet pump and water tank form, and its energy consumption Nash hytor commonly used doubles above, mainly due to the jet pump efficient of this conventional version cross low due to.The experimental performance of this type jet pump is with (Soviet Union) E. Я. Valeriy Sokolov, Fig. 7-13 that H.M. Jin Geer work " sparger " chapter 7 water-air sparger (Science Press, 1977, Huang Qiuyun translates) illustrates and " thermal engineering " (" Т Е П Л
Э Н Е Р Г Е Т И К А ") the 7th phase in 1964 carried (Soviet Union). Д. other Germania, Г. И〉Ye Feimoqijin " Vacuum Pumps calculating formula " (" Р А С Ч Е Т Н Ы Е З А В И С И М О С Т И Д Л Я В О Д О С Т Р y Й Н Ы Х Э Ж Е К Т О Р О В ") texts and pictures 1 are representative, its unit experimental performance when forming water-liquid-gas jet gas-exhauster with two-tage suction can be consulted Qingtian county, Zhejiang province farm build four factory's samples " Zsub-60 type water jet pump ".The inventor has proposed its two-stage inhalation type liquid-gas jetting pump of inventing in " mechanics journal " 1980 fourth phases " the efficient ejector of the high mass ratio of induced-to-inducing air of a two-stage inhalation type " literary composition has and very high efficiencyly experiment showed, but do not provide its performance equation and optimal design data.
Energy consumption when the jet pump that the object of the invention is to improve conventional version improves its dynamic efficiency and is used for air exhauster to reduce is quite eliminated the application drawback that the latter was brought with the smooth replacement latter thereby make with the water ring vaccum pump energy consumption in explained hereafter.Thereby rely on above-mentioned two-stage inhalation type structure sets up its correct mathematical model and finds out its optimal design data to reach above-mentioned target for this reason.
Fig. 1 is the present invention's two-stage inhalant liquid-liquid-gas jet gas-exhauster with two-tage suction schematic representation.
Fig. 2 is two-stage inhalant liquid of the present invention-gas jet pump experimental performance and above-mentioned Е. Я. and the empirical curve comparison diagram that Valeriy Sokolov is done traditional single-stage suction jet pump.
The same Fig. 2 of Fig. 3 is the single-stage suction jet pump Comparison of experiment results of doing with the other Germania of above-mentioned Л Д.
Fig. 4 for the air exhauster Performance Ratio of the present invention and above-mentioned " Zsub-60 type water jet pump " sample.
Consult Fig. 1, the present invention is mainly by centrifugal water pump 1, and two-stage inhalation type liquid-gas jetting pump 2 and water tank 3 form.Water pump 1 is taken out circulating liquid and is pressed into the nozzle 2-1 of jet pump from water tank 3, liquid sprays from nozzle 2-1 with high-speed jet, the gas that enters from suction port around entrainmenting also brings to first order mixing tube and namely adds pipe 2-5, the liquid-gas two-phase flow body mixes in this pipe, the more unexpected expansion of certain distance generation that closely knit liquid stream is disperseed and manage before exporting in this interpolation is full of tube section, is still flowed out at a relatively high speed by this pipe lower exit then.This stream is the further gas that sucks the shell 2-2 that flows through that enters from same suction port of work jet of former mixing tube 2-3 as second level mixing tube.This jet is the liquid gas mixing jet that is emulsus, is conducive to unhelpful loss air-breathing and can reduce Momentum Transfer the time most.Mix because two-stage sucks two-stage, new structure has changed internal flow state, thereby takes full advantage of the energy of primary liquid jet core, makes the jet pump dynamic efficiency obtain to increase substantially.The gas that is inhaled in pipe 2-3, accelerate and pressurization after through diffuser pipe 2-4 dynamic pressure is converted to static pressure again and delivers to the water tank bottom, gas automatic-ascending and be collected to the air outlet and drain into outside the machine in the water tank water body.Water flow to water pump from the bottom water pipe and recycles.The jet pump intakeport can connect vacuum system and produce vacuum, also can connect normal pressure or have pressing system process gas to be sucked and is delivered to the production system that is connected in the water tank air outlet or the emission by exhaust pipe of back.For optimum size ratio and the present invention of grasp operating characteristics who seeks two-stage inhalation type liquid-gas jetting pump set up the theoretical characteristics formula that is suitable for this type structure, and through experimental verification.Thereby rely on this characteristic type to obtain optimum size ratio this interpolation pipe and former mixing tube by a large amount of calculating and experiment be, be 1 such as predetermined suction with the ejection volume flow ratio, 2, the outlet of adding pipe 2-5 and nozzle 2-1 at 3 o'clock should be 2,2,3 than mutually, former mixing tube 2-3 should be 1.2 mutually with interpolation pipe 2-5 section ratio, 1.5,1.5, the length of interpolation pipe 2-5 is 10 ± 1 with the optimum range of its diameter ratio.Former mixing tube 2-3 is 13 ± 1 corresponding to the optimum range of the length under this pattern and its diameter ratio.
The theoretical characteristics formula that is suitable for the two-stage suction is
H in the formula
1The dynamic pressure of-nozzle; h
2-gas boosting; P
2, P
4-suction inlet and outlet pressure; T
1, T
2-water temperature and temperature; u
01-first order volume mass ratio of induced-to-inducing air; The heavily rate ratio of Δ-gas and water; λ-friction factor; η
d-extension pressur efficiency; φ
3-1, φ
3-2Total correction factor of-first and second grade mixing tube λ and dynamic pressure.
The present invention also is applicable to that any other uses the occasion of liquid-gas jetting pump.
The advantage that the present invention has can be seen from Fig. 2,3 and 4.U among each figure
0For sucking and the volume flow ratio (operation attitude) that sprays; The volume flowrate (operation attitude) of V for sucking; P is pressure, before 1,2, the 4 finger nozzles of getting a foothold, and intakeport and jet pump outlet; Be nozzle efficiency; A is the present invention's experimental energy line.As can be known gettering quantity different increases more than 1.0～1.5 times with operating parameter under the condition of same gas boosting and the ratio of nozzle inside and outside differential pressure, thereby Energy Intensity Reduction 50～60%.So, then make the energy consumption level of liquid-gas jetting air exhauster drop to water ring vaccum pump power consumption grade on, cleared away obstacle for replacing the latter, make the simple of such machine, easy care does not pollute processing medium, does not have plurality of advantages such as leaking harmful production medium and obtains aborning utilizing.
Use the invention process, for example get u
0=2 design condition, the part 2-1 outlet diameter of getting among Fig. 1 is 25.1 millimeters, and part 2-5 diameter is 35. millimeters, and long 350 millimeters, part 2-3 diameter is 44.0 millimeters, and long 570 millimeters, experiment records u
0=1.94 o'clock P
4-P
2/ (P
1-P
2)=0.20(experiment P
1=3.9 barometric absolute pressures vacuumize, and record η=0.95).
Claims (1)
1, a kind of two-stage inhalant liquid-liquid-gas jet gas-exhauster with two-tage suction, by centrifugal water pump, two-stage inhalant liquid-gas jet pump and water tank form, added an isometrical straight length between the nozzle of described liquid-gas jetting pump and the mixing tube entrance, form the two-stage suction, the optimum size ratio that it is characterized in that this interpolation pipe and former mixing tube is to be followed successively by 1,2 such as predetermined suction and ejection volume flow ratio, add pipe at 3 o'clock and should be 2 with the jet area than mutually, 2,3, mixing tube should be 1.2 with the interpolation tube section than mutually, 1.5,1.5 the optimum range that adds the slenderness ratio of pipe is 10 ± 1, the slenderness ratio optimum range of former mixing tube is 13 ± 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102383A CN85102383B (en) | 1985-04-01 | 1985-04-01 | Liquid-gas jet gas-exhauster with two-tage suction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102383A CN85102383B (en) | 1985-04-01 | 1985-04-01 | Liquid-gas jet gas-exhauster with two-tage suction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85102383A CN85102383A (en) | 1986-10-01 |
| CN85102383B true CN85102383B (en) | 1987-07-29 |
Family
ID=4792467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85102383A Expired CN85102383B (en) | 1985-04-01 | 1985-04-01 | Liquid-gas jet gas-exhauster with two-tage suction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85102383B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2423490B (en) * | 2005-02-23 | 2009-05-20 | Dps | Separator |
-
1985
- 1985-04-01 CN CN85102383A patent/CN85102383B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85102383A (en) | 1986-10-01 |
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| PB01 | Publication | ||
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |