CN202056515U - Water conveying device - Google Patents

Abstract

The utility model discloses a water conveying device including a first pipe and a second pipe, which are mutually communicative and arranged at an included angle of 109-110 degree. Joint portion of the first pipe and the second pipe is provided with a water inlet. The water conveying device also includes a third pipe and a fourth pipe communicating with the water outlet end of the first pipe, and a fifth pipe and a sixth pipe communicating with the water outlet end of the second pipe. Compared with a prior-art high-pressure mechanical-atomizing nozzle, the water conveying device has no nozzle device and forms uniform spraying mouths through a tree network structure, so that spray water is atomized under Rayleigh fracturing mechanism to form liquid drops with relatively large diameter. Supplement water and condenser exhausting heat and mass transfer area are expended to satisfy purpose of reinforcing heat exchange, thereby preventing the problem of huge energy consumption due to large pressure drop loss generated by a nozzle. The water conveying device is low in pressure drop loss and less in energy consumption.

Description

A kind of water delivery device

Technical field

The utility model relates to caloic switching technology field, more particularly, relates to a kind of water delivery device.

Background technique

In the production process of thermal power plant, owing to there is multiple working medium loss phenomenon, for example, therefore extraction for heat supply, boiler blow-off, steam soot blowing, pipe leakage, feed water pump warming-up etc. need to give the thermodynamic system supplementing water, stable to keep heating power circuit working medium quantity.In addition, the needing in running of Turbo-generator Set constantly keeps the skin wet, and the moisture that is replenished is chemistry filled water.Chemistry filled water enters in the coagulator of steam turbine by water delivery device, purpose is to make supplementing water realize atomizing in coagulator, make the chemistry filled water of low temperature and the steam turbine exhaust of high temperature in coagulator, realize mixed heat transfer, thereby the vapour amount that makes steam turbine enter the coagulator cooling zone reduces, therefore under the situation that cooling water inflow, water temperature are constant in cooling tube, help improving the degree of vacuum of vapour condenser.

Water replenishing device commonly used at present is mainly the tubulose water delivery device, when utilizing this tubulose water delivery device moisturizing, owing to the hole for water spraying ejection of current along the vapour condenser water-adding pipe, hole for water spraying is arranged along the water-adding pipe length direction, under the effect of moisturizing pressure, moisturizing sprays with column.Fast, the distance of the water flow jet speed of column, but heat exchange area is little, so that the exhaust of the moisturizing of low temperature and high temperature can't obtain sufficient mixed heat transfer in vapour condenser, be unfavorable for the interior deaeration in condenser of vapour condenser.

In order to improve the heat exchange area of moisturizing and exhaust, application number is that 200420118037 Chinese patent literature discloses a kind of steam turbine set vapour condenser moisturizing atomising device in the prior art, this device is provided with the high-pressure machinery atomizer nozzle on the condenser throat water-adding pipe, this high-pressure machinery atomizer nozzle is spaced along the length direction of water-adding pipe, has improved the heat exchange area of moisturizing and exhaust.But because this moisturizing atomising device adopts the high-pressure machinery atomizer nozzle to make the moisturizing atomizing, droop loss is big, and it is bigger to consume energy.

The model utility content

In view of this, the technical problems to be solved in the utility model is to provide a kind of water delivery device, and the droop loss of this water delivery device is less.

The utility model provides a kind of water delivery device, comprising:

Be interconnected, angle is 109 °～110 ° first pipeline and second pipeline, described first pipeline includes the mouth of a river with the place of connection of second pipeline;

The 3rd pipeline and the 4th pipeline that is communicated with the described first pipeline waterexit end respectively, described the 3rd pipeline is vertical mutually with second plane that pipeline is with described first pipeline with the 4th plane that pipeline is, described the 3rd pipeline and the 4th pipeline are symmetrically distributed in the both sides on described first pipeline and second plane that pipeline is, the water (flow) direction of described the 3rd pipeline and the 4th pipeline and the water (flow) direction of described first pipeline are consistent, and the angle of described the 3rd pipeline and the 4th pipeline is 109 °～110 °;

The 5th pipeline and the 6th pipeline that is communicated with the described second pipeline waterexit end respectively, described the 5th pipeline is vertical mutually with second plane that pipeline is with described first pipeline with the 6th plane that pipeline is, described the 5th pipeline and the 6th pipeline are symmetrically distributed in the both sides on described first pipeline and second plane that pipeline is, the water (flow) direction of described the 5th pipeline and the 6th pipeline is consistent with the water (flow) direction of described second pipeline, and the angle of described the 5th pipeline and the 6th pipeline is 109 °～110 °.

Preferably, described first pipeline is identical with the caliber of second pipeline, pipe range equal.

Preferably, described the 3rd pipeline, the 4th pipeline, the 5th pipeline, pipe range identical with the caliber of the 6th pipeline equates.

Preferably, described the 3rd pipeline is 0.7177～0.7179 with the caliber ratio of described first pipeline.

Preferably, described the 3rd pipeline is 0.5485～0.5487 with the pipe range ratio of described first pipeline.

Preferably, described first pipeline, second pipeline, the 3rd pipeline, the 4th pipeline, the 5th pipeline and the 6th pipeline are circular pipe.

Preferably, also comprise:

The 7th pipeline and the 8th pipeline that is communicated with described the 3rd pipeline waterexit end respectively, described the 7th pipeline is vertical mutually with the 4th plane that pipeline is with described the 3rd pipeline with the 8th plane that pipeline is, described the 7th pipeline and the 8th pipeline are symmetrically distributed in the both sides on described the 3rd pipeline and the 4th plane that pipeline is, the water (flow) direction of described the 7th pipeline and the 8th pipeline is consistent with the water (flow) direction of described the 3rd pipeline, and the angle of described the 7th pipeline and the 8th pipeline is 109.46 °.

Preferably, described the 7th pipeline is identical with the caliber of described the 8th pipeline, pipe range equal.

Preferably, described the 7th pipeline is 0.7177～0.7179 with the caliber ratio of described the 3rd pipeline.

Preferably, described the 7th pipeline is 0.5485～0.5487 with the pipe range ratio of described the 3rd pipeline.

From above-mentioned technological scheme as can be seen, the utility model provides a kind of water delivery apparatus, this water delivery apparatus comprise be interconnected, angle is 109 °～110 ° first pipeline and second pipeline, described first pipeline includes the mouth of a river with the place of connection of second pipeline; The 3rd pipeline and the 4th pipeline that is communicated with the described first pipeline waterexit end respectively; The 5th pipeline and the 6th pipeline that is communicated with the described second pipeline waterexit end respectively.Compare with prior art mesohigh atomizing nozzle, this water delivery device does not adopt nozzle device, by the tree network structure, form uniform spout, make spraying water broken atomizing under Rayleigh Cracking Mechanism condition to form larger-diameter drop, make the expansion of supplementing water and vapour condenser exhaust heat and mass area, satisfy the forced heat exchanging purpose, thereby avoided because the droop loss that shower nozzle produces is big, bigger problem consumes energy.The droop loss of the water delivery device that the utility model provides is less, thus less energy intensive.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the disclosed water delivery device plan view of the utility model embodiment;

Fig. 2 is the disclosed water delivery device left side view of the utility model embodiment;

Fig. 3 is the disclosed water delivery device right side view of the utility model embodiment;

Fig. 4 is the stereogram of the disclosed water delivery device of the utility model embodiment.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

As Fig. 1, Fig. 2, shown in Figure 3, the utility model provides a kind of water delivery device, comprising:

Water inlet 101, first pipeline 102, second pipeline 103, the 3rd pipeline 201, the 4th pipeline 202, the 5th pipeline 301 and the 6th pipeline 302,

Wherein, first pipeline 102 and second pipeline 103 are interconnected, angle is 109 °～110 °, water inlet 101 is arranged at the place that is communicated with of first pipeline 102 and second pipeline 103, the 3rd pipeline 201 and the 4th pipeline 202 are communicated with first pipeline, 102 waterexit ends respectively, the 3rd pipeline 201 and the 4th plane that pipeline 202 is and first pipeline 102 and second pipeline 103 to be the plane vertical mutually, the 3rd pipeline 201 and the 4th pipeline 202 are symmetrically distributed in the both sides on first pipeline 102 and second plane that pipeline 103 is, the water (flow) direction of the 3rd pipeline 201 and the 4th pipeline 202 and the water (flow) direction of first pipeline 102 are consistent, and the angle of the 3rd pipeline 201 and the 4th pipeline 202 is 109 °～110 °;

The 5th pipeline 301 and the 6th pipeline 302 are communicated with second pipeline, 103 waterexit ends respectively, the 5th pipeline 301 and the 6th plane that pipeline 302 is and first pipeline 102 and second pipeline 103 to be the plane vertical mutually, the 5th pipeline 301 and the 6th pipeline 302 are symmetrically distributed in the both sides on first pipeline 102 and second plane that pipeline 103 is, the water (flow) direction of the 5th pipeline 301 and the 6th pipeline 302 is consistent with the water (flow) direction of second pipeline 103, and the angle of the 5th pipeline 301 and the 6th pipeline 302 is 109 °～110 °.

First pipeline 102 is identical with second pipeline, 103 calibers, pipe range equates.The caliber of the 3rd pipeline 201, the 4th pipeline 202, the 5th pipeline 301 and the 6th pipeline 302 is identical, pipe range equates.The caliber ratio of the 3rd pipeline 201 and first pipeline 102 is 0.7177～0.7179, is preferably 0.7178.The pipe range ratio of the 3rd pipeline 201 and first pipeline 102 is 0.5485～0.5487, is preferably 0.5486.First pipeline 102, second pipeline 103, the 3rd pipeline 201, the 4th pipeline 202, the 5th pipeline 301 and the 6th pipeline 302 are circular pipe.

The water delivery device that the utility model provides also comprises:

The 7th pipeline and the 8th pipeline that is communicated with the 3rd pipeline 201 waterexit ends respectively, the 7th pipeline and plane that the 8th pipeline is and the 3rd pipeline 201 and the 4th pipeline 202 to be the plane vertical mutually, the 7th pipeline and the 8th pipeline are symmetrically distributed in the both sides on the 3rd pipeline 201 and the 4th plane that pipeline 202 is, the water (flow) direction of the 7th pipeline and the 8th pipeline is consistent with the water (flow) direction of the 3rd pipeline 201, and the angle of the 7th pipeline and the 8th pipeline is 109.46 °.The caliber of the 7th pipeline and described the 8th pipeline is identical, pipe range equates.The 7th pipeline is 0.7177～0.7179 with the caliber ratio of described the 3rd pipeline, is preferably 0.7178.The 7th pipeline is 0.5485～0.5487 with the pipe range ratio of described the 3rd pipeline, is preferably 0.5846.

As shown in Figure 4, the stereogram of the water delivery device that provides for the utility model, this water delivery device during bifurcated, form according to top modular construction, and the next unit face of new branch are vertical with the upper level elemental area each time.

The angle of first pipeline 102 and second pipeline 103 is preferably 109.46 ° in the water delivery device described in the utility model, the angle of the 3rd pipeline 201 and the 4th pipeline 202 is preferably 109.46 °, the angle of the 5th pipeline 301 and the 6th pipeline 302 is preferably 109 °～110 °, more preferably 109.46 °.

Angle with first pipeline 102 and second pipeline 103 is an example, determines as follows:

If the caliber of first pipeline 102 is d ₀, the pipe range of first pipeline 102 is l ₀, the caliber of the 3rd pipeline 201 is d1, the pipe range of the 3rd pipeline 201 is l ₁, half of the angle of first pipeline and second pipeline is θ.With the distance between the waterexit end of the 3rd pipeline and the 4th pipeline is long, with the perpendicular distance between the waterexit end of water inlet to the three pipelines is height, with the perpendicular distance between the 3rd pipeline waterexit end and the 5th pipeline waterexit end is that the volume of the cuboid of wide formation is V, and the surface area of the pipeline of this cuboid is S.

V＝(l ₀+l ₁)l ₀l ₁sin2θsinθ

S＝πd ₀l ₀+2πd ₁l ₁

When water was in the smooth area under control of turbulent flow, the total consumed power of secondary tree-shaped pipeline was:

${\stackrel{.}{W}}_{\mathrm{sum}}={\stackrel{.}{W}}_0+2{\stackrel{.}{W}}_1=0.3164{\mathrm{\μ}}^{0.25}{\mathrm{\ρ}}^{-1}{\mathrm{\π}}^{-1.75}{2}^{2.5}(\frac{{\stackrel{.}{m}}^{2.75}{l}_0}{d_0^{4.75}}+2\frac{{(\stackrel{.}{m}/2)}^{2.75}{l}_1}{d_1^{4.75}})$

$=c(\frac{l_0}{d_0^{4.75}}+2^{-1.75}\frac{l_1}{d_1^{4.75}})$

In the formula $c=\frac{2^{2.5}0.3164{\mathrm{\μ}}^{0.25}{\stackrel{.}{m}}^{2.75}}{{\mathrm{\ρ\π}}^{1.75}}$

The definition Lagrangian function:

$L(l_0,l_1,d_0,d_1,\mathrm{\θ})=X=\stackrel{.}{W}+{\mathrm{\λ}}_{0}S+{\mathrm{\λ}}_{1}V$

To l ₀, l ₁, d ₀, d ₁, θ differentiate respectively obtains set of equation:

$\left\{\begin{array}{c}\frac{\∂X}{\∂l_0}=\frac{\∂\stackrel{.}{W}}{\∂l_0}+{\mathrm{\λ}}_0\frac{\∂S}{\∂l_0}+{\mathrm{\λ}}_1\frac{\∂V}{\∂l_0}=0\\ \frac{\∂X}{\∂l_1}=\frac{\∂\stackrel{.}{W}}{\∂l_1}+{\mathrm{\λ}}_0\frac{\∂S}{\∂l_1}+{\mathrm{\λ}}_1\frac{\∂V}{\∂l_1}=0\\ \frac{\∂X}{\∂d_0}=\frac{\∂\stackrel{.}{W}}{\∂d_0}+{\mathrm{\λ}}_0\frac{\∂S}{\∂d_0}+{\mathrm{\λ}}_1\frac{\∂V}{\∂d_0}=0\\ \frac{\∂X}{\∂d_1}=\frac{\∂\stackrel{.}{W}}{\∂d_1}+{\∂}_0\frac{\∂S}{\∂d_1}+{\mathrm{\λ}}_1\frac{\∂V}{\∂d_1}=0\\ \frac{\∂X}{\∂\mathrm{\θ}}=\frac{\∂\stackrel{.}{W}}{\∂\mathrm{\θ}}+{\mathrm{\λ}}_0\frac{\∂S}{\∂\mathrm{\θ}}+{\mathrm{\λ}}_1\frac{\∂V}{\∂\mathrm{\θ}}=0\end{array}\right.$

That is:

$\left\{\begin{array}{c}\frac{c}{d_0^{4.75}}+{\mathrm{\λ}}_0\mathrm{\π}{d}_0+{\mathrm{\λ}}_1({2l}_0{l}_1+l_1^2)=0\\ \frac{c}{2^{1.75}{d}_0^{4.75}}+{\mathrm{\λ}}_{0}2\mathrm{\π}{d}_0+{\mathrm{\λ}}_1({2l}_0{l}_1+l_0^2)=0\\ \frac{-4.75l_{0}c}{d_0^{5.75}}+{\mathrm{\λ}}_0\mathrm{\π}{l}_0=0\\ \frac{-4.75l_{1}c}{2^{1.75}{d}_0^{5.75}}+\mathrm{\λ}{2}_0\mathrm{\π}{l}_0=0\\ (l_0+l_1)l_0{l}_1(\sin 2\mathrm{\θ}\cos \mathrm{\θ}+2\cos 2\mathrm{\θ}\sin \mathrm{\θ})=0\end{array}\right.$

In the time of can releasing the minimum pressure drop loss like this: $\frac{d_{n+1}}{d_n}=2^{-\frac{11}{23}}0.7178$

$\cos \mathrm{\θ}=\frac{1}{\sqrt{3}},$ Be 54.73 ° of θ ≈

$\frac{l_{n+1}}{l_n}=(m-1)+\sqrt{(m^2-m+1)},$ Promptly $\frac{l_{n+1}}{l_n}\≈0.5486.$

Therefore, adjacent two layers caliber ratio

Adjacent two layers pipe range ratio

Angle of forking 54.73 * 2=109.46 °.

In order to further specify the technical solution of the utility model, below in conjunction with embodiment the utility model preferred embodiment is described, but should be appreciated that these describe just to further specifying feature and advantage of the present utility model, rather than to the restriction of the utility model claim.

Embodiment

Have situation now at certain 50,000 unit: rate of water make-up Q=60t/h, demineralized water incoming flow pressure P1 is 0.4MPa, about 20 ℃ of temperature, condenser vacuum pressure P ₂=0.08Ma-0.093MPa, delivery temperature t=38.9-60 ℃.Water delivery apparatus is measured as shown in table 1.Water delivery apparatus adopts as Fig. 1, Fig. 2 and shown in Figure 3, and structure is divided nine layers, and spout has 2 ⁹=512, density is 400No./m ²

Adjacent two layers caliber ratio

Adjacent two layers pipe range ratio

Angle of forking: 54.73 * 2=109.46 °, getting spray orifice speed is 1m/s.

The water delivery apparatus parameter is as shown in the table:

Table 1 water delivery apparatus metric table

Table 2 water delivery apparatus metric table

Gn represents that inlet is G ₀, per minute is pitched once, and n adds 1;

D is a pipe diameter, and unit is mm;

U is the flow velocity (ignoring with changing in one deck pipe) of every layer of tube inlet water, and unit is m/s, and the outlet port flow velocity is 1m/s;

Re is reynolds number Re=ud/ ν, ν=0.8 * 10 ^-6m ²/ s;

λ is the darcy friction factor, according to the Re reynolds number range, calculates with Bradley Hughes formula:

λ＝0.3164/Re ^0.25，

ζ is the local losses factor.

Water delivery apparatus quantity is two, and shared space profiles is the cone of rectangular bottom surface, and by the water delivery apparatus metric table as can be known, its base area is 1.542 * 0.83=1.28m ², height is 0.5348m.The water delivery apparatus pressure drop is about P=17.026KPa.

Factors such as the smooth degree of each layer crotch of the water delivery device that the utility model provides, flow guide device and dimensionless radius of curvature can make the local resistance loss factor reduce, and the diameter of end outlet influences the size of drop, thereby influences the heat exchange effect.

The water delivery device that the utility model provides is compared with prior art mesohigh atomizing nozzle, this water delivery device does not adopt nozzle device, by the tree network structure, form uniform spout, make spraying water broken atomizing under Rayleigh Cracking Mechanism condition to form larger-diameter drop, make supplementing water and vapour condenser exhaust heat and mass area expand, satisfy the forced heat exchanging purpose, thereby avoided because the droop loss that shower nozzle produces is big, bigger problem consumes energy.The droop loss of the water delivery device that the utility model provides is less, thus less energy intensive.

To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, defined herein General Principle can be under the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments, for example can be used for spraying, the direct mass-and heat-transfer occasion of contact such as atomizing.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims (10)

1. a water delivery device is characterized in that, comprising:

Be interconnected, angle is 109 °～110 ° first pipeline and second pipeline, described first pipeline includes the mouth of a river with the place of connection of second pipeline;

The 3rd pipeline and the 4th pipeline that is communicated with the described first pipeline waterexit end respectively, described the 3rd pipeline is vertical mutually with second plane that pipeline is with described first pipeline with the 4th plane that pipeline is, described the 3rd pipeline and the 4th pipeline are symmetrically distributed in the both sides on described first pipeline and second plane that pipeline is, the water (flow) direction of described the 3rd pipeline and the 4th pipeline and the water (flow) direction of described first pipeline are consistent, and the angle of described the 3rd pipeline and the 4th pipeline is 109 °～110 °;

The 5th pipeline and the 6th pipeline that is communicated with the described second pipeline waterexit end respectively, described the 5th pipeline is vertical mutually with second plane that pipeline is with described first pipeline with the 6th plane that pipeline is, described the 5th pipeline and the 6th pipeline are symmetrically distributed in the both sides on described first pipeline and second plane that pipeline is, the water (flow) direction of described the 5th pipeline and the 6th pipeline is consistent with the water (flow) direction of described second pipeline, and the angle of described the 5th pipeline and the 6th pipeline is 109 °～110 °.

2. water delivery device according to claim 1 is characterized in that, the caliber of described first pipeline and second pipeline is identical, pipe range equates.

3. water delivery device according to claim 2 is characterized in that, the caliber of described the 3rd pipeline, the 4th pipeline, the 5th pipeline and the 6th pipeline is identical, pipe range equates.

4. water delivery device according to claim 3 is characterized in that, described the 3rd pipeline is 0.7177～0.7179 with the caliber ratio of described first pipeline.

5. water delivery device according to claim 3 is characterized in that, described the 3rd pipeline is 0.5485～0.5487 with the pipe range ratio of described first pipeline.

6. water delivery device according to claim 1 is characterized in that, described first pipeline, second pipeline, the 3rd pipeline, the 4th pipeline, the 5th pipeline and the 6th pipeline are circular pipe.

7. water delivery device according to claim 1 is characterized in that, also comprises:

The 7th pipeline and the 8th pipeline that is communicated with described the 3rd pipeline waterexit end respectively, described the 7th pipeline is vertical mutually with the 4th plane that pipeline is with described the 3rd pipeline with the 8th plane that pipeline is, described the 7th pipeline and the 8th pipeline are symmetrically distributed in the both sides on described the 3rd pipeline and the 4th plane that pipeline is, the water (flow) direction of described the 7th pipeline and the 8th pipeline is consistent with the water (flow) direction of described the 3rd pipeline, and the angle of described the 7th pipeline and the 8th pipeline is 109.46 °.

8. water delivery device according to claim 7 is characterized in that, the caliber of described the 7th pipeline and described the 8th pipeline is identical, pipe range equates.

9. water delivery device according to claim 8 is characterized in that, described the 7th pipeline is 0.7177～0.7179 with the caliber ratio of described the 3rd pipeline.

10. water delivery device according to claim 7 is characterized in that, described the 7th pipeline is 0.5485～0.5487 with the pipe range ratio of described the 3rd pipeline.

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