CN201714724U - Diffusing pipe used on ejector with high suction specific speed - Google Patents

Diffusing pipe used on ejector with high suction specific speed Download PDF

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Publication number
CN201714724U
CN201714724U CN2010202981659U CN201020298165U CN201714724U CN 201714724 U CN201714724 U CN 201714724U CN 2010202981659 U CN2010202981659 U CN 2010202981659U CN 201020298165 U CN201020298165 U CN 201020298165U CN 201714724 U CN201714724 U CN 201714724U
Authority
CN
China
Prior art keywords
diffusing pipe
specific speed
suction specific
straight tube
ejector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010202981659U
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Chinese (zh)
Inventor
郭海军
李剑清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANGZHOU LONGDA VACUUM EQUIPMENT CO Ltd
Original Assignee
HANGZHOU LONGDA VACUUM EQUIPMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HANGZHOU LONGDA VACUUM EQUIPMENT CO Ltd filed Critical HANGZHOU LONGDA VACUUM EQUIPMENT CO Ltd
Priority to CN2010202981659U priority Critical patent/CN201714724U/en
Application granted granted Critical
Publication of CN201714724U publication Critical patent/CN201714724U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a diffusing pipe used on an ejector with high suction specific speed, wherein the diffusing pipe adopts a straight tube-type structure. Preferably, the length-diameter ratio of a straight tube satisfies (5-10):1. The company changes a commonly used Venturi diffusing pipe to the straight tube-type diffusing pipe, the suction specific speed can be increased greatly under the invariable tube area by adopting the straight tube-type diffusing pipe when very low vacuum is needed only, the suction specific speed can reach 1:40, and excellent energy-saving effect can be achieved.

Description

A kind of diffuser pipe that is used for big suction than sparger
Technical field
The utility model relates to a kind of diffuser pipe that is used for big suction than sparger.
Background technique
Sparger has another name called jet vacuum pump, jetting stream vacuum sparger, jet pump, water ejector, vacuum ejector.The working principle of sparger is that the vacuum of utilizing fluid to transmit energy and quality obtains device, adopts the current that certain pressure is arranged to pass through the nozzle ejection of the certain skew back degree of symmetrical uniform one-tenth, is aggregated on the focus.Because the water-spraying flow velocity is high especially, can change pressure into the speed energy, air-breathing district pressure is reduced produce vacuum.Several high-velocity flows are seized away the gas that is sucked, and fully mix compression through the Venturi tube contraction section with the larynx footpath, carry out the molecular diffusion energy interchange, the speed equilibrium.Reducing increased pressure through extending section speed, spray into the water tank (pond) from outlet greater than atmospheric pressure, incoagulable gas is separated out.Water recycles through centrifugal pump, finishes air-breathing technology.A kind of like this device is called sparger, and in this device, two fluid streams of different pressures are mixed mutually, and energy interchange takes place, to form the fluid-mixing of one pressure placed in the middle.Fluid-mixing is divided into gas (steam) phase, liquid phase, or the mixture of gas (steam), liquid and solid.Before the inletting device, the higher the sort of medium of pressure is called working medium.Working medium stream is called working fluid.Working fluid comes out from nozzle with very high speed, enters the receiving chamber of sparger, and the lower medium of pressure before sparger is taken away.The fluid that is pulled away is called driving fluid.Usually in sparger, be that potential energy or the heat energy that working fluid takes place changes kinetic energy at first.The kinetic energy of working fluid, a part is passed to driving fluid.Along in the sparger process of flowing, the speed of fluid-mixing is balanced gradually, so the kinetic energy of fluid-mixing changes potential energy or heat energy on the contrary into.
Working medium fluid and injection medium fluid enter in the mixing chamber, carry out the equilibrium of speed, also follow the rising of pressure usually.Fluid comes out to enter diffuser from mixing chamber, and pressure will continue to raise.In the diffuser outlet port, the pressure of fluid-mixing is higher than the pressure of driving fluid when entering receiving chamber.Improve the pressure of driving fluid and directly do not consume mechanical energy, this is a sparger the most basic topmost performance.Owing to have this character, in a lot of engineering departments, adopt sparger than the supercharging equipment (compressor, pump, blower and induced draught fan etc.) that adopts machinery, make to obtain more simply more reliable technique solution.Except this body structure was simple especially, the system that sparger is connected with various device was also very simple, made also uncomplicatedly, was used widely on engineering.Wherein in the power engineering technology field, be mainly used in generating extensively, waste gas residual heat heating installation, refrigeration, conveying solid substance shot shape object etc.
Vacuum Pumps is made up of parts such as body, device lid, nozzle, nozzle seat board, positioning disk, diffuser pipe and one-way valves.The vacuum that Vacuum Pumps forms is higher, and the form of its diffuser pipe generally all is (with reference to Fig. 1) of venturi type, and tapered portion, trunnion part and flaring part are promptly arranged, and it aspirates than being generally 1:4, i.e. 1m 3/ h water is taken out 4m 3/ h air.The maximum purpose of the convergent flaring of venturi diffuser pipe is well to boost in order to obtain.Dwindling of its trunnion reduced circulation area, restricted the suction ratio.If higher than requiring for suction, then the diffuser pipe of venturi type can't meet the demands.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of diffuser pipe that is used for big suction than sparger.
A kind of diffuser pipe that is used for big suction than sparger, described diffuser pipe is the straight-tube structure.
Preferably, the slenderness ratio of described straight tube is 5~10:1.
Our company changes into the straight-tube diffuser pipe with normally used venturi diffuser pipe, when only needing very rough vacuum, adopt the straight-tube diffuser pipe, when constant trunnion area, can greatly improve the suction ratio, reached 1:40, play good energy-saving effect, also promptly aspirated 40m 3/ h air, venturi type diffuser pipe power requirement water 10m 3/ h, and only need power water 1m with the straight-tube diffuser pipe 3/ h.
Description of drawings
Fig. 1 is the structural representation of venturi type diffuser pipe in the prior art.
Fig. 2 is the structural representation of diffuser pipe of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing the technical solution of the utility model is further elaborated, but protection domain of the present utility model is not limited to this.
With reference to Fig. 2, a kind of diffuser pipe that is used for big suction than sparger, described diffuser pipe 1 is the straight-tube structure.The slenderness ratio of described straight tube is 5~10:1.

Claims (2)

1. one kind is used for the big diffuser pipe that aspirates than sparger, and it is characterized in that: described diffuser pipe is the straight-tube structure.
2. the diffuser pipe that is used for big suction than sparger according to claim 1, it is characterized in that: the slenderness ratio of described straight tube is 5~10:1.
CN2010202981659U 2010-08-20 2010-08-20 Diffusing pipe used on ejector with high suction specific speed Expired - Fee Related CN201714724U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202981659U CN201714724U (en) 2010-08-20 2010-08-20 Diffusing pipe used on ejector with high suction specific speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202981659U CN201714724U (en) 2010-08-20 2010-08-20 Diffusing pipe used on ejector with high suction specific speed

Publications (1)

Publication Number Publication Date
CN201714724U true CN201714724U (en) 2011-01-19

Family

ID=43460720

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202981659U Expired - Fee Related CN201714724U (en) 2010-08-20 2010-08-20 Diffusing pipe used on ejector with high suction specific speed

Country Status (1)

Country Link
CN (1) CN201714724U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108581395A (en) * 2018-06-19 2018-09-28 中国船舶重工集团柴油机有限公司 The process that diffuser pipe group is welded in a kind of marine diesel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108581395A (en) * 2018-06-19 2018-09-28 中国船舶重工集团柴油机有限公司 The process that diffuser pipe group is welded in a kind of marine diesel
CN108581395B (en) * 2018-06-19 2020-02-14 中国船舶重工集团柴油机有限公司 Process method for assembling and welding diffuser pipe in marine diesel engine

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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: 20110119

Termination date: 20130820