CN201827161U

CN201827161U - Secondary injection ejector

Info

Publication number: CN201827161U
Application number: CN2010205788441U
Authority: CN
Inventors: 袁益超; 刘聿拯; 马昕霞; 黄鸣; 张润卿; 陆文俊; 康明; 刘海磊
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2010-10-27
Filing date: 2010-10-27
Publication date: 2011-05-11
Anticipated expiration: 2020-10-27

Abstract

The utility model relates to a secondary injection ejector, which comprises a mixing chamber, a choke and a diffusion pipe. Tail sucking holes are arranged on the wall of the choke and the wall of the diffusion pipe, so that injection fluid enters the ejector via the tail sucking holes to realize secondary injection. A sucking chamber and an ejector inlet are successively disposed on the mixing chamber, and a spray nozzle is arranged between the sucking chamber and the ejector inlet. The secondary injection ejector adopts pressure difference between work fluid and the ejection fluid, so that the injection fluid can be secondarily injected by the tail sucking holes on the choke and the diffusion pipe of the ejector. On the premise of not changing other components of the ejector and not reducing the quality and the flow of the original injection fluid, the quality and the flow of the injection fluid are increased by the aid of secondary injection, thereby increasing injection coefficient of the ejector, and improving ejection property of the ejector.

Description

The secondary injection sparger

Technical field

The utility model relates to a kind of sparger, is specifically related to a kind of sparger that utilizes the pressure reduction principle to improve jet coefficient.

Background technique

Sparger is a kind of jet turbulent fluctuation diffusion of utilizing, with high-pressure liquid injection low-pressure fluid and pass can mass transfer fluid machinery and mix reaction equipment.Have advantages such as simple in structure, easy processing, movement-less part, reliable operation, cost be low, convenient for installation and maintenance, and driven fluid there is not strict demand, also be suitable under particular job conditions such as especially strong, High Temperature High Pressure, demonstrate its unique advantages in toxic, radioactivity, inflammable and explosive, corrosivity.Therefore, be used widely in industries such as hydraulic and electric engineering, petrochemical industry, metallurgical light textile, nuclear energy uses, Aero-Space, farming and animal husbandries for a long time, and obtained huge economic benefit, development and national economy is played immeasurable effect.

The mass ratio of induced-to-inducing air of sparger is a key property index of weighing sparger.The size of mass ratio of induced-to-inducing air is being represented the quality of sparger jet performance.Mass ratio of induced-to-inducing air is big more, shows the working fluid of unit mass flow, and the mass flow rate of the driving fluid by sprayer pumps is big more.Mass ratio of induced-to-inducing air is numerically equal to the ratio of driving fluid mass flow rate and working fluid mass flow rate.Existing sparger mass ratio of induced-to-inducing air is little, and the jet performance of sparger is poor.

Summary of the invention

The utility model is to propose a kind of secondary injection sparger, this sparger does not need to change other members of existing sparger, and can also increase the mass ratio of induced-to-inducing air of sparger, have advantages such as simple in structure, easy processing, movement-less part, reliable operation, cost be low, convenient for installation and maintenance.

The technical solution of the utility model is: a kind of secondary injection sparger, comprise mixing chamber, trunnion, diffusing tube, be characterized in: on the tube wall of the tube wall of trunnion and diffusing tube, have the afterbody inlet hole, make driving fluid enter into sparger and form secondary injection by the afterbody inlet hole.Be provided with suction chamber above the mixing chamber successively, the sparger inlet; Be provided with nozzle between suction chamber and the sparger inlet.

The beneficial effects of the utility model are: the utility model utilizes the pressure reduction of working fluid and driving fluid, makes driving fluid have the afterbody inlet hole from the trunnion of sparger and diffusing tube and is secondly ejected.Do not change the sparger miscellaneous part, do not reducing to have increased the mass flow rate of driving fluid by secondary injection, thereby increased the mass ratio of induced-to-inducing air of sparger on the basis of mass flow rate of original driving fluid, improving the jet performance of sparger.

Description of drawings

Fig. 1 is a section of structure of the present utility model;

Fig. 2 is a plan view of the present utility model;

Fig. 3 is that the utility model is at the schematic diagram that improves on the sparger mass ratio of induced-to-inducing air.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As Fig. 1, shown in 2, secondary injection sparger of the present utility model, it comprises sparger inlet 1, nozzle 2, trunnion 3, diffusing tube 4, suction chamber 5, mixing chamber 6, afterbody inlet hole 7.

On the tube wall of the tube wall of the trunnion 3 of sparger and diffusing tube 4, have afterbody inlet hole 7, make driving fluid enter into sparger and form secondary injection by the afterbody inlet hole 7 on trunnion 3 and the diffusing tube 4.

Be provided with suction chamber 5 above the mixing chamber 6 successively, sparger inlet 1; Be provided with nozzle 2 between suction chamber 5 and the sparger inlet 1.

The utility model is for the mass ratio of induced-to-inducing air that improves sparger, and improving injector performance has very significantly effect.The status parameter of the size of mass ratio of induced-to-inducing air and working fluid, driving fluid, the structure of sparger all has confidential relation.But experiment showed, the status parameter at working fluid, driving fluid, under other identical in structure situations of sparger, having mass ratio of induced-to-inducing air of the present invention will be much larger than the sparger of non-the utility model structure.

As shown in Figure 3, be wet vapor 10 at working fluid, when being supercooled water 11, uses driving fluid the utility model.Supercooled water 11 is except entering sparger from suction chamber 5, and also the afterbody inlet hole 7 on trunnion 3 and the diffusing tube 4 enters into sparger.In this process, the utility model is except guaranteeing that supercooled water 11 can enter into the sparger from original suction chamber 5, also opened up trunnion 3 and diffusing tube 4 enter sparger as supercooled water 11 passage in addition, increased the mass flow rate of supercooled water 11 thus greatly, the mass ratio of induced-to-inducing air of sparger is increased greatly, improved the jet performance of sparger.

Claims

1. secondary injection sparger, comprise mixing chamber (6), trunnion (3), diffusing tube (4), it is characterized in that: on the tube wall of the tube wall of trunnion (3) and diffusing tube (4), have afterbody inlet hole (7), make driving fluid pass through afterbody inlet hole (7) and enter into sparger and form secondary injection.

2. secondary injection sparger according to claim 1 is characterized in that: be provided with suction chamber (5) above the described mixing chamber (6) successively, sparger inlet (1).

3. secondary injection sparger according to claim 2 is characterized in that: be provided with nozzle (2) between described suction chamber (5) and the sparger inlet (1).