CN211040931U

CN211040931U - Atomizing nozzle and deaerator

Info

Publication number: CN211040931U
Application number: CN201921239896.3U
Authority: CN
Inventors: 井小海; 杨明华
Original assignee: MCC Capital Engineering and Research Incorporation Ltd; Ceri Environmental Protection Techonology Co Ltd
Current assignee: MCC Capital Engineering and Research Incorporation Ltd; Ceri Environmental Protection Techonology Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-07-17
Anticipated expiration: 2029-08-02

Abstract

The utility model provides an atomizing nozzle and oxygen-eliminating device relates to boiler and heating system field, and this atomizing nozzle includes the play water drum, has seted up a plurality of hole for water spraying on the section of thick bamboo wall of play water drum, and the hole for water spraying radially runs through a section of thick bamboo wall along the play water drum, and the one end of hole for water spraying is the entrance point that is linked together with the inner chamber of play water drum, and the other end of hole for water spraying is the exit end, and the exit end intercommunication of every hole for water spraying has at least one slot, and the slot is seted up on the outer wall of section of thick bamboo wall and is outwards extended by the export, in order. The utility model provides an atomizing nozzle and oxygen-eliminating device can produce the even droplet of distribution, and then makes the oxygen-eliminating device reach better deoxidization effect.

Description

Atomizing nozzle and deaerator

Technical Field

The utility model relates to a boiler and heating system field, in particular to atomizing nozzle and oxygen-eliminating device.

Background

The oxygen-removing device is one of key devices of a boiler and a heat supply system, is widely used in a power generation and thermal system, has the main function of removing oxygen contained in supplied water, and can cause serious corrosion to a boiler water supply pipeline, an economizer and other accessory equipment to cause great economic loss if the oxygen-removing capability of the oxygen-removing device is poor, and the power generation system provides own standards for the oxygen content of the boiler oxygen-removing device, namely the oxygen content of the water supplied by the atmospheric oxygen-removing device is less than 15 mu Ag/L, and the oxygen content of the water supplied by the pressure type oxygen-removing device is less than 7 mu Ag/L.

The integrated deaerator has the characteristics of compact structure, high deaerating efficiency, convenience for centralized control and the like, and is a form widely applied in the market at present. The working principle is that water supplemented by the deaerator enters the atomizing nozzle through the regulating valve, a spring is arranged between an inner shell and an outer shell of the atomizing nozzle, the atomizing nozzle fully atomizes the supplementing water according to the change of the internal and external pressure difference, and the supplementing water is subjected to primary deaerating (primary deaerating) by carrying out sufficient heat exchange with a high-temperature steam space on the upper part of the deaerator. And (4) making up water subjected to preliminary deoxidization enters a high-temperature water space at the lower part, carrying out secondary heating deoxidization, and conveying the deoxidized water to the system.

The atomizing nozzle is the key equipment of the integrated deaerator, and directly influences the primary deaerating effect on the atomization degree of the make-up water. The atomizing nozzles of the integrated deaerator in the current market mainly comprise a disc type atomizing nozzle and a spring type atomizing nozzle; when the water supplement amount is larger, a disc type is adopted, and when the water supplement amount is smaller, a spring type is adopted. The existing small deaerator (less than or equal to 120t/h) generally adopts a spring type atomizing nozzle, and the number of the opened nozzle orifices can be automatically adjusted according to the internal and external pressure difference and the water replenishing quantity of the replenishing water so as to ensure that the replenishing water can atomize at a certain flow rate and achieve the effect of heating and deaerating.

A plurality of small holes which are communicated with the inside and the outside are processed on the nozzle cylinder wall of the spring type atomizing nozzle to form atomizing spray holes for supplying water to enter the deaerator. The small water spraying holes are arranged on the wall of the nozzle barrel according to a certain arrangement rule, and the number of the small water spraying holes to be opened is automatically adjusted according to the difference of internal and external pressure differences, so that each small hole is ensured to have enough internal and external spraying pressure difference, enough water flow speed is achieved, and the atomization effect is ensured. However, because each small water spray hole is a round hole (with a downward oblique angle) formed from the inner wall to the outer wall of the nozzle barrel, the cross section of the sprayed water column is in the shape of water or dense fog drops in the middle and atomized small water fog drops around the sprayed water column, the phenomena of incomplete atomization and uneven water fog in a sprayed steam space exist, the steam heat exchange is not thorough, and the oxygen removal efficiency is reduced.

In view of the above, the present inventors have designed an atomizing nozzle and a deaerator through repeated experiments based on production design experiences in this field and related fields for many years, in order to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an atomizing nozzle and oxygen-eliminating device can produce the even droplet of distribution, and then makes the oxygen-eliminating device reach better deoxidization effect.

In order to achieve the above object, the utility model provides an atomizing nozzle, including the play urceolus, wherein, a plurality of hole for water spraying has been seted up on the section of thick bamboo wall of play urceolus, the hole for water spraying is followed the play urceolus radially runs through the section of thick bamboo wall, the one end of hole for water spraying be with the entrance point that the inner chamber of play urceolus is linked together, the other end of hole for water spraying is exit end, every the exit end intercommunication of hole for water spraying has at least one slot, the slot is seted up on the outer wall of section of thick bamboo wall and by export outwards extends, in order to incite somebody to action hole for water spraying spun.

The atomizing nozzle as described above, wherein the bottom surface of the groove is formed in a circular arc shape.

An atomiser nozzle as claimed in any preceding claim, in which the depth of the channel tapers outwardly from the outlet end.

An atomising nozzle as described above, wherein the width of the channel tapers outwardly from the outlet end.

The atomizing nozzle is characterized in that each outlet end is provided with a plurality of grooves which are uniformly distributed along the circumferential direction of the outlet end.

The atomizing nozzle as described above, wherein each of the outlet ends is connected to 4 grooves, and the 4 grooves are distributed in a criss-cross manner.

The atomizing nozzle is characterized in that the plurality of water spray holes are uniformly distributed along the circumferential direction of the water outlet barrel to form water spray units, the plurality of water spray units are sequentially arranged along the axial direction of the water outlet barrel, and the water spray holes of two adjacent water spray units are arranged in a staggered manner.

The atomizing nozzle as described above, wherein the axis of the water jetting hole is disposed obliquely to the cylinder wall.

The atomizing nozzle comprises a shell and a spring, wherein the shell is cylindrical and is provided with an installation cavity which is communicated up and down, the water outlet barrel is sleeved in the shell, the bottom end of the water outlet barrel can extend out of the shell, an inward convex circle of first limiting step is arranged on the inner wall of the shell, the outer wall of the water outlet barrel is in sliding fit with the limiting steps, a convex circle of second limiting step is arranged at the top end of the water outlet barrel, the inner wall of the shell is in sliding fit with the second limiting step, the spring is wound on the outer wall of the water outlet barrel, and two ends of the spring respectively abut against the first limiting step and the second limiting step.

The utility model discloses still provide a deaerator, hollow deoxidization chamber has, wherein the moisturizing entry has been seted up on the top in deoxidization chamber, the moisturizing entry is external to have the moisturizing to take over, and atomizing nozzle installs as above the moisturizing entrance, the moisturizing that the moisturizing was taken over and is provided via get into behind atomizing nozzle formation water smoke the deoxidization chamber.

Compared with the prior art, the utility model has the following characteristics and advantages:

in the utility model, the water supplied to the deaerator enters the water spraying holes from the inner cavity of the water outlet barrel and then is sprayed out through the outlets of the water spraying holes, and the sprayed water flow can be atomized; because the slot is linked together with the export and outwards extends along the export, like this, rivers not only can be outwards sprayed by the export, can also flow to the slot and outwards spray by the slot again, under the equal flow condition, the scope of the spraying that rivers formed can be bigger, and the atomization effect of rivers also can be better, and the water smoke of formation is also better with the heat exchange of steam, and then makes the oxygen-eliminating device reach better deoxidization effect.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation.

Fig. 1 is a schematic structural view of an atomizing nozzle according to the present invention;

fig. 2 is a schematic structural view of a part of the deaerator provided by the present invention;

fig. 3 is a schematic structural view of the middle water outlet barrel of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at K;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is a schematic view of the P direction in FIG. 5;

fig. 8 is a perspective view of the middle water outlet tube of the present invention;

fig. 9 is a schematic view of the spray area formed by the atomizing nozzle of the present invention;

fig. 10 is a schematic view of a spray zone formed by a prior art nozzle.

Description of reference numerals:

100. an atomizing nozzle; 10. A water outlet barrel;

11. a cylinder wall; 12. An inner cavity;

13. a second limit step; 20. A water spray hole;

21. an inlet end; 22. An outlet end;

30. a trench; 50. A housing;

51. a first limit step; 60. A spring;

200. a water replenishing connecting pipe; 300. A deaerator;

310. a deoxygenating cavity; 320. A water replenishing inlet;

330. a pipe connecting flange.

Detailed Description

The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of explanation only, and should not be construed as limiting the invention in any way. Given the teachings of the present invention, the skilled person can conceive of any possible variants based on the invention, which should all be considered as belonging to the scope of the invention.

As shown in fig. 1 and 3 to 8, the atomizing nozzle 100 of the present invention has a water outlet barrel 10, a plurality of (a plurality of) water spraying holes 20 are formed on a barrel wall 11 of the water outlet barrel 10, the water spraying holes 20 penetrate the barrel wall 11, one end of each water spraying hole 20 is an inlet end 21 connected to an inner cavity 12 of the water outlet barrel 10, the other end of each water spraying hole 20 is an outlet end 22, the outlet end 22 of each water spraying hole 20 is communicated with at least one groove 30, and the groove 30 is formed on an outer wall surface of the barrel wall 11 and extends outward from the outlet end 22 to atomize water sprayed from the water spraying holes 20.

The utility model discloses still provide an oxygen-eliminating device 300, as shown in fig. 2, have hollow deoxidization chamber 310, seted up moisturizing entry 320 on the top in deoxidization chamber 310, moisturizing entry 320 is external to have the moisturizing to take over 200, and atomizing nozzle 100 installs in moisturizing entry 320 department, and the moisturizing that the moisturizing was taken over 200 and is provided gets into deoxidization chamber 310 behind atomizing nozzle 100 formation water smoke.

In the utility model, the water supplied to the deaerator 300 enters the water spraying hole 20 from the inner cavity 12 of the water outlet barrel 10, and then is sprayed out through the outlet end 22 of the water spraying hole 20, and the sprayed water flow can be atomized; because the slot 30 is linked together with the export 22 and outwards extends along the export end 22, like this, rivers not only can be outwards sprayed by the export end 22, can also flow to the slot 30 and outwards spray by the slot 30 again, under the equal flow condition, the scope of the spraying that rivers formed can be bigger, and the atomization effect of rivers also can be better, and the water smoke of formation is also better with the heat exchange of steam, and then can reach better deoxidization effect.

The utility model discloses in, the installation between atomizing nozzle 100 and oxygen-eliminating device 300 is simple and easy, easy maintenance. When the deaerator 300 is designed and manufactured, a pipe connecting flange is reserved at the water replenishing inlet 320 and the water replenishing connecting pipe 200 is connected. The atomizing nozzle 100 is installed according to the drawing after being washed, decontaminated and debugged, and is simple and easy to operate. When the water replenishing resistance is large, the atomizing nozzle 100 needs to be detached for cleaning and then reset.

In an alternative example of the present invention, as shown in fig. 1 and fig. 2, the atomizing nozzle 100 further includes a housing 50 and a spring 60, the housing 50 is cylindrical and has a vertically through installation cavity, the top end of the water outlet barrel 10 is open, and the bottom end is closed; the water outlet barrel 10 is sleeved in the shell 50, the bottom end of the water outlet barrel 10 can extend downwards out of the shell 50, a circle of inward convex first limiting step 51 is arranged on the inner wall of the shell 50, the outer wall surface of the water outlet barrel 10 is in sliding fit with the first limiting step 51, a circle of outward convex second limiting step 13 is arranged at the top end of the water outlet barrel 10, the inner wall surface of the shell 50 is in sliding fit with the second limiting step 13, the spring 60 is wound outside the barrel wall 11 of the water outlet barrel 10, and two ends of the spring 60 respectively abut against the first limiting step 51 and the second limiting step 13.

A connecting pipe flange 330 for installing an atomizing nozzle is arranged at a water supplementing inlet 320 of the deaerator 300, and the top end of the shell 50 is connected with the flange of the water supplementing inlet connecting pipe 200, so that water supplementing pressure acts on the water outlet barrel 10 firstly and then is transmitted to the spring 60 during water supplementing; when the pressure difference formed by the water replenishing pressure and the internal gas pressure of the deaerator 300 is increased, the spring 60 is compressed, wherein the larger the pressure difference is, the more the spring 60 is compressed, the more the part of the water outlet barrel 10 extending out of the shell 50 is, the more the water spray holes 20 on the water outlet barrel 10 are exposed, and the sprayed water quantity is large; the spring 60 is compressed less when the pressure difference is reduced, the water spraying holes 20 on the water outlet barrel 10 are exposed less, and the sprayed water amount is small, so that the water columns sprayed by the water spraying holes 20 can keep a certain flow speed under different pressure difference working conditions, and the water columns can be fully atomized into water mist. Like this, make oxygen-eliminating device 300 can obtain timely moisturizing through atomizing nozzle 100, simultaneously, atomizing nozzle 100 has still guaranteed the high-efficient atomizing of moisturizing and has made the water smoke that the moisturizing formed can be full of the soda heat exchange total space, and then realizes the deoxidization of efficient once, has still prolonged the life of follow-up equipment, has improved economic benefits.

The utility model discloses in, atomizing nozzle 100 relies on self power operation completely, need not external kinetic energy, is an energy-concerving and environment-protective product to atomizing nozzle 100 can also realize the automatically regulated to the water spray volume

In an alternative embodiment of the present invention, a plurality of water spray holes 20 are provided in the lower portion of the wall 11 of the outlet tube 10.

In an alternative embodiment of the present invention, as shown in fig. 3-8, the depth of the groove 30 gradually decreases from the outlet end 22 outward (in a direction away from the outlet end 22).

In an alternative embodiment of the present invention, as shown in fig. 3-8, the width of the channel 30 decreases from the outlet end 22.

In an alternative embodiment of the present invention, as shown in fig. 3-8, the groove 30 extends radially outwardly of the outlet end 22.

In the present invention, as shown in fig. 3 to 8, the shape of the groove 30 is gradually contracted from the outlet end 22, and the mist formed by spraying the water through the groove 30 is distributed more uniformly.

In an alternative embodiment of the present invention, the bottom surface of the groove 30 is circular.

In another alternative embodiment of the present invention, the cross-section of the groove 30 is V-shaped. Of course, the shape of the bottom surface or cross section of the groove 30 may be adjusted according to the shape of the processing tool, as long as the processing is suitably performed.

In an alternative example of the present invention, as shown in fig. 3 to 8, a plurality of grooves 30 are provided at each outlet end 22, and the grooves 30 are uniformly distributed along the circumferential direction of the outlet end 22.

In an alternative embodiment of the present invention, as shown in fig. 3 to 8, 4 grooves 30 are provided at each outlet end 22, and the 4 grooves 30 are distributed in a criss-cross manner. Thus, the water flow can be jetted outwards from the outlet 22 and also outwards from the 4 grooves 30 respectively, so that a solid conical spray shape can be generated, and the 4 grooves 30 are distributed in a crisscross manner, as shown in fig. 9, so that the formed jetting area is square; compared with the conventional circular spraying area (as shown in fig. 10), the interval between the spraying areas corresponding to two adjacent water spraying holes 20 is smaller, so that the droplets sprayed by the whole atomizing nozzle 100 are distributed more uniformly, and the atomization of the whole space around the atomizing nozzle 100 is realized.

In an alternative example of the present invention, as shown in fig. 3 to 8, the plurality of water spraying holes 20 are uniformly distributed along the circumference of the water outlet barrel 10 to form water spraying units, the plurality of water spraying units are sequentially arranged along the axial direction of the water outlet barrel 10, and the water spraying holes 20 of two adjacent water spraying units are arranged in a staggered manner. Like this, both reduced the clearance between the injection region that adjacent hole for water spraying 20 corresponds, avoided the injection region that adjacent hole for water spraying 20 corresponds to overlap each other again, further guaranteed the evenly distributed of droplet, utilized the inner space of oxygen-eliminating device 300 simultaneously again furthest, guaranteed the high-efficient atomizing of moisturizing and can be full of the soda heat exchange total space, realize the total space atomizing, further improved the deoxidization effect of oxygen-eliminating device 300.

In an alternative embodiment of the present invention, the water spraying holes 20 are arranged in a downward inclination, i.e. the water spraying holes 20 are at an angle to the horizontal.

Preferably, the water jet holes 20 are formed at an angle of 10 degrees with respect to the horizontal. So that the spray (water mist) sprayed from the water spray holes 20 reaches a longer distance, more sufficient water vapor heat exchange is carried out, and a better oxygen removing effect is achieved.

In the following description of the embodiments, the invention is described in detail, but the description is not to be construed as limiting the invention for any reason, and in particular, the features described in the different embodiments may be combined with each other as desired, thereby forming other embodiments, and the features are understood to be applicable to any one embodiment and not limited to the described embodiments unless explicitly described to the contrary.

Claims

1. An atomizing nozzle comprises a water outlet barrel and is characterized in that a plurality of water spray holes are formed in the barrel wall of the water outlet barrel, the water spray holes radially penetrate through the barrel wall along the water outlet barrel, one end of each water spray hole is an inlet end communicated with an inner cavity of the water outlet barrel, and the other end of each water spray hole is an outlet end;

the outlet end of each water spraying hole is communicated with at least one groove, and the grooves are formed in the outer wall surface of the cylinder wall and extend outwards from the outlet end so as to atomize water sprayed from the water spraying holes.

2. An atomiser nozzle as claimed in claim 1, in which the base of the channel is rounded.

3. The atomizing nozzle of claim 1, wherein the depth of the channel decreases from the outlet end outwardly.

4. The atomizing nozzle of claim 1, wherein the width of the channel tapers outwardly from the outlet end.

5. The atomizing nozzle of claim 1, wherein each of the outlet ends communicates with a plurality of the channels, the channels being evenly spaced about the circumference of the outlet end.

6. The atomizing nozzle of claim 5, wherein each of the outlet ends communicates with 4 of the channels, the 4 channels being arranged in a criss-cross pattern.

7. The atomizing nozzle according to claim 6, wherein a plurality of the water spray holes are uniformly distributed along the circumference of the water outlet barrel to form water spray units, the water spray units are sequentially arranged along the axial direction of the water outlet barrel, and the water spray holes of two adjacent water spray units are arranged in a staggered manner.

8. The atomizing nozzle of claim 1, wherein the axis of the water orifice is disposed obliquely to the barrel wall.

9. The atomizing nozzle according to claim 1, further comprising a housing and a spring, wherein the housing is cylindrical and has a through-hole installation cavity, the water outlet barrel is sleeved in the housing, the bottom end of the water outlet barrel can extend out of the housing, an inwardly protruding circle of first limiting step is arranged on the inner wall of the housing, the outer wall of the water outlet barrel is in sliding fit with the limiting step, a protruding circle of second limiting step is arranged at the top end of the water outlet barrel, the inner wall of the housing is in sliding fit with the second limiting step, the spring is wound on the outer wall of the water outlet barrel, and two ends of the spring respectively abut against the first limiting step and the second limiting step.

10. The utility model provides a deaerator, has hollow deoxidization chamber, its characterized in that the moisturizing entry has been seted up on the top in deoxidization chamber, the moisturizing entry is external to have the moisturizing to take over, and any one in claims 1 to 9 atomizing nozzle install the moisturizing entrance, the moisturizing that the moisturizing was taken over and is provided is via atomizing nozzle gets into behind the formation water smoke the deoxidization chamber.