CN201815405U

CN201815405U - Adjustable ejector nozzle

Info

Publication number: CN201815405U
Application number: CN201020174563XU
Authority: CN
Inventors: 胡在定
Original assignee: HANGZHOU HUADA EJECT VACUUM EQUIPMENT CO Ltd
Current assignee: HANGZHOU HUADA EJECT VACUUM EQUIPMENT CO Ltd
Priority date: 2010-04-27
Filing date: 2010-04-27
Publication date: 2011-05-04
Anticipated expiration: 2020-04-27

Abstract

The utility model relates to an adjustable ejector nozzle linearly adjusting mass flow rate of water vapor passing a nozzle throat, which comprises a nozzle body, wherein a penetrating through cavity is arranged axially in the body, a contracting cavity and an expanding cavity in the through cavity are positioned at both ends of the through cavity and are cylindrical cavities, a middle cavity is a cylindrical throat, the matched point of the through cavity with the contracting cavity and the throat is provided with a core rod, the head part of the core rod is positioned in the contracting cavity, and the effective change of radial size of the nozzle throat is realized by the forward and backward movement of the core rod. The utility model has the advantages that the cross sectional area of the throat can be directly, conveniently and flexibly controlled so as to make an ejector work stably and save energy source, and the adjustable ejector nozzle is easy to operate and has high efficiency.

Description

The adjustable spraying apparatus nozzle

Technical field

The utility model relates to a kind of linear regulation by used nozzle in adjustable spraying apparatus nozzle, especially the water vapour injector of the water vapour mass flow of nozzle throat neck, belongs to nozzle and makes the field.

Background technology

All Granted publication CN2475476Y of the applicant, " a kind of injector nozzle ", comprise nozzle body, have contraction section, larynx neck and three sections cavities of expansion segment in the body continuously, be provided with a plug in the position of matching with contraction section, the head of this plug is a cone.Like this, effective radial dimension of the larynx neck of injector nozzle can be realized changing by moving forward and backward of plug, controls the cross-sectional area of larynx neck easily and flexibly, makes the injector working stability, and energy savings.Its weak point: because it still can't the water vapour mass flow be linear corresponding relation, therefore adopt not only very numerous and diverse, the design of hardware and software of sampling of computer system control and metering, and precision is low, reliability is low, almost can't and measure its flow with computer system control.

The utility model content

Purpose of design: avoid the weak point in the background technology, but a kind of linear regulation of design is by the adjustable spraying apparatus nozzle of the water vapour mass flow of nozzle throat neck and the forming method of injection linear fluid.

Design: in order to realize above-mentioned purpose of design.1, the head of plug is a major technique feature of the present utility model by the design that auger, parabolic type awl and conelet constitute.The purpose of doing like this is: because the parabolic type awl is positioned between auger and conelet and the parabolic cone end is the conelet bottom, the parabolic cone bottom is that auger end, auger bottom are the plug end, by manually or automatically regulating the position of plug head in the larynx neck, make the effective radial dimension of larynx neck of injector nozzle realize changing by moving forward and backward of plug, and the turnover distance is subjected to the effect of its head parabolic type awl before and after the plug, can make the water vapour mass flow by the nozzle throat neck be linear corresponding relation.2, the afterbody of plug and steam lead seal section are connected, and are provided with the design of rule, are two of technical characterictics of the present utility model.The purpose of doing like this is: it not only can make the adjusting of flow more convenient directly perceived, and the flow of meter fluid easily.

Technical scheme: adjustable spraying apparatus nozzle, comprise nozzle body, have the cavity of perforation in the body vertically, contraction chamber and expansion cavity are positioned at the two ends of cavity and are the circular cone cavity in this cavity, intermediate cavity is a column type larynx neck, be provided with a plug with contraction chamber and larynx neck cooperation place, the head of plug is positioned at contraction chamber and realizes the variation of effective radial dimension of nozzle throat neck by moving forward and backward of plug, the head of described plug is by big tapering, parabolic type tapering and conelet portion constitute and the parabolic type tapering is positioned between big tapering and little tapering and end, parabolic tapering is conelet portion bottom, and bottom, parabolic tapering is end, big tapering, bottom, big tapering is the plug end.

The utility model is compared with background technology, and the one, can force water vapour mass flow to be linear corresponding relation by manually or automatically regulating the parabolic tapering conical surface of plug head by the nozzle throat neck; The 2nd, can be intuitively, convenient, control the cross-sectional area of larynx neck flexibly, make injector more stable work, reliable, not only saved the energy, and easy and simple to handle, efficient is high.

Description of drawings

Fig. 1 is an adjustable spraying apparatus structure of nozzle schematic diagram.

Fig. 2 is the enforcement structural representation of adjustable spraying apparatus nozzle.

The specific embodiment

Embodiment 1: with reference to attached Fig. 1 and 2.The adjustable spraying apparatus nozzle, comprise nozzle body 2, have the cavity of perforation in the body vertically, contraction chamber 3 and expansion cavity 5 are positioned at the two ends of cavity and are the circular cone cavity in this cavity, intermediate cavity is a column type larynx neck 4, be provided with a plug 1 with contraction chamber 3 and larynx neck 4 cooperation places, the head of plug 1 is positioned at contraction chamber 3 and realizes the variation of effective radial dimension of nozzle throat neck 4 by moving forward and backward of plug 1, the head of described plug 1 is by big tapering 6, it is conelet portion 8 bottoms that parabolic type tapering 7 and conelet portion 8 formations and parabolic type tapering 7 are positioned at big tapering 6 and 8 in conelet portion and 7 ends, parabolic tapering, and 7 bottoms, parabolic type tapering are 6 ends, big tapering, big 6 bottoms, tapering are plug 1 end.Change when working vapor produces fluctuation, can move forward and backward forecone 6, parabolic type tapering 7, the position of conelet portion 8 in larynx neck 4 that plug 1 changes plug 1, thereby change the cross-sectional area of larynx neck 4, make by the steam mass flow of nozzle constant.After the temperature of the cooling water in the condenser in summer in winter changes equally, thereby, can change the discharge pressure of injector as long as pass through to change the cross-sectional area of the front and back position of plug 1 to suitable position of rule change larynx neck 4.

Described nozzle computing formula is: Wherein,

Described plug 1 is provided with a scale 9.

The afterbody of described plug 1 and steam lead seal section are connected.

Embodiment 2: on the basis of embodiment 1, the forming method of adjustable spraying apparatus nozzle ejection linear fluid, it comprises the adjustable spraying apparatus nozzle, manually or automatically regulate the big tapering 6 of plug 1 head, parabolic tapering 7, the position of conelet portion 8 bottoms in larynx neck 4, parabolic tapering 7 conical surfaces of plug 1 head force the water vapour mass flow by the nozzle throat neck to be linear corresponding relation.

What need understand is: though the foregoing description is to the mentality of designing of the present utility model detailed text description of contrasting; but these text descriptions; just the simple text of the utility model mentality of designing is described; rather than to the restriction of the utility model mentality of designing; any combination, increase or modification that does not exceed the utility model mentality of designing all falls in the protection domain of the present utility model.

Claims

1. adjustable spraying apparatus nozzle, comprise nozzle body, have the cavity of perforation in the body vertically, contraction chamber and expansion cavity are positioned at the two ends of cavity and are the circular cone cavity in this cavity, intermediate cavity is a column type larynx neck, be provided with a plug with contraction chamber and larynx neck cooperation place, the head of plug is positioned at contraction chamber and realizes the variation of effective radial dimension of nozzle throat neck by moving forward and backward of plug, it is characterized in that: the head of described plug is by big tapering, parabolic type tapering and conelet portion constitute and the parabolic type tapering is positioned between big tapering and little tapering and end, parabolic tapering is conelet portion bottom, and bottom, parabolic tapering is end, big tapering, bottom, big tapering is the plug end.

2. adjustable spraying apparatus nozzle according to claim 1 is characterized in that: described plug is provided with a scale.

3. adjustable spraying apparatus nozzle according to claim 1 is characterized in that: the afterbody of described plug and steam lead seal section are connected.