CN201662057U - Vertical desuperheater - Google Patents

Abstract

The utility model belongs to the field of steam boilers and particularly relates to a desuperheater. The desuperheater comprises an inlet pipe, an outlet pipe, a body, a protecting pipe, a service pipe and a mixing pipe. The mixing pipe is connected with the protecting pipe and then connected into the body; the inlet pipe is perpendicularly connected with the lower side of the body; and the outlet pipe is perpendicularly connected with the upper side of the body. The desuperheater is characterized in that the body is installed in a perpendicular direction, the service pipe is connected with the upper end of the body, the protecting pipe is connected to the upper side of the mixing pipe, water spray holes are arranged on the service pipe, an included angle alpha between the axis of each water spray hole and that of the service pipe optimally ranges from 30 degrees to 45 degrees; and the number of the water spray holes can be optionally and evenly arranged on the same section of the service pipe. Compared with the prior art, the desuperheater has the remarkable advantages of compact structure, small occupied floor space, more water spray points, wide water spray range, even temperature reduction, fine temperature reduction effect and capability of saving energy resources.

Description

Vertical attemperator

Technical field

The utility model belongs to the steam boiler field, particularly a kind of attemperator.

Background technology

Mostly the existing structure shape pattern that is used for the greenhouse cooling of initial steam is a kind of form of horizontal attemperator, and its version and manufacturing process are simple relatively.Attemperator itself will account for certain area, and the space that also will reserve debugging and overhaul in its both sides, this part area is also bigger than body floor space sometimes, reserve again at body two in addition that the inlet steam pipe is connected with outlet the place, these areas are added up and are just reached considerable area.The inlet of horizontal attemperator, the steam flow direction is orthogonal with the cooling water inlet tube, this just means that the injection point position will be restricted, because the cooling water injection direction will can not be opposite with steam flow direction basically identical, otherwise the water droplet that has atomized is combined into the very big globule again, again because of inlet tube perpendicular to the steam flow direction, cause that steam streams, thereby easily produce Karman vortex, so the rod-type nozzle is arranged in the inlet tube back side to hole for water spraying.Become the both sides of angle just can not evenly be sprayed onto water on the whole cross section like this with center line, it is just low to be sprayed onto that part of cross section of water vapor (steam) temperature, and spray is just high less than that part of vapor (steam) temperature of water, and temperature is uneven on whole cross section.And steam makes temperature progressively even in the mutual disturbance whipping process of steam in Turbulence Flow after will leaning on.Also having is increasing jet chimney length or is increasing porous plate etc.It is depending nozzle spirt some cooling waters in steam that attemperator is wanted desuperheat, though nozzle can make the cooling water water droplets vary in size, vary, cooling water is by after opening nozzle, one side is moving linearly under action of inertia and under the steam drive, on the other hand because the quality of water droplet is bigger than the quality of steam.Under water droplet hangs down the power effect, do the movement of falling object, horizontal attemperator synthesizes parabolic motion with these two kinds of motions.Some fine liquid particles owing to absorb the heat of steam, has improved the temperature of self in motion process, also reduced the temperature of steam simultaneously.Water droplet temperature from outward appearance to inner essence reduces gradually, and the water droplet surface temperature will be evaporated after reaching certain value.Evaporating saturated air will mix one with original steam, becomes a kind of new argument steam, because the water droplet volume is little, evaporation time is short, will evaporate fully at the volley.The water-drop evaporation time that some volumes are bigger is longer, and some water droplet does not also evaporate fully just to be fallen on the tube wall.Horizontal attemperator take good care of yourself phenomenon comparatively general, form one water layer in the pipe bottom.This point is also measured and is proved tube wall temperature by the scene.Because fall the cooling water of tube wall, temperature is lower than steam, so the pipe bottom temp is minimum.And the tube temperature difference is with regard to formation temperature stress, and this stress is that and then tube temperature increases and strengthens.Have only emitting at pipe bottom water layer, so as not to collection is many more more, what influence that quality of steam emits is not common water, but has also treated demineralized water of certain pressure and heat energy, and it is discharged is very unfortunate.Increase along with industry changes into the benefit of subsisting, land use area is more and more valuable, and the energy is more and more nervous, and the ability of existing Desuperheating device is subjected to very big challenge, designs a kind of trend that littler, more energy-conservation Desuperheating device becomes the attemperator development that has.

The utility model content

The purpose of this utility model provide a kind ofly have that floor space is little, the relatively rational Desuperheating device of energy savings, structure.

The utility model purpose can realize by following technical solution: a kind of vertical Desuperheating device; comprise: inlet tube; outlet; body; protection tube; inlet tube; mixing tube; mixing tube be connected in the body again after protection tube links to each other; inlet tube and body vertical linking to each other of below; outlet and body vertical linking to each other of top; it is characterized in that: body is that vertical direction is installed; inlet tube links to each other with this upper end; protection tube is connected in the mixing tube top; opening hole for water spraying axis and inlet tube axis angle on the inlet tube is α; α the best is got 30 °～45 °, and inlet tube evenly is furnished with hole for water spraying on the same cross section.

The utility model compared with prior art, its remarkable advantage is:

1, compact conformation, floor space is little: as long as vertical attemperator it 3-4m is arranged ²Area just much of that, install and the debugging floor space can be saved greatly, general horizontal attemperator is than big ten times of vertical attemperator floor spaces.

2, injection point is many, wide, and desuperheat is even, effective: its steam flow of vertical attemperator and inlet tube center line are parallel to each other, and only are the direction of cross section in face of air-flow, and it does not produce the condition of Karman vortex.Can on the same cross section of cooling water inlet tube, can arrange arbitrarily and axis angle like this.Water ejects from hole for water spraying, form the moisture film wall one, steam during by the moisture film wall cooling water must penetrate in the steam, cause vapor (steam) temperature to descend comprehensively, also can dwindle vapor mixing length, all total multiaspect extensively causes because vertical attemperator is sprayed water on the cross section of jet chimney for these.

3, saved the energy: vertical attemperator mainly be the steam direction of motion be following and on, and the movement of falling object is above and descend.Their direction of motion is just in time opposite.Their resultant motions are rectilinear motions, and this is two kinds of substantial differences of attemperator just.The water droplet of evaporation can not be fallen the bottom.Because it can run into the more and more faster steam of flow velocity in the landing process.Just increasing to the water droplet pulling force, water droplet is in the landing process in addition, and vapor (steam) temperature is more and more higher, has accelerated water-drop evaporation speed.Its volume is reduced rapidly, just might be blown afloat by steam again, so this attemperator does not have steam trap connection, the cooling water that is sprayed onto in the steam be utilized entirely, can not cause waste to save desuperheating water as horizontal attemperator,

Description of drawings

Fig. 1 is a structural representation of the present utility model.

The specific embodiment

Below the utility model is described in further detail for the contrast drawings and the specific embodiments.

In conjunction with Fig. 1, vertical attemperator is made up of inlet tube 1, outlet 8, body 3, mixing tube 2, inlet tube 7, protection tube 4, slide block 5, plug 6.Mixing tube 2 and protection tube 4 welding earlier; again slide block 5 is welded to protection tube 4 outsides; mixing tube 2 after the welding is put into body 3 be positioned at inlet tube 1 and outlet 8 middle welding; with inlet tube 1 and body 3 welding; be positioned at the mixing tube below; with outlet 8 and body 3 welding, be positioned at protection tube 4 tops, last welding plug 6.The inlet tube 7 of packing into, the water jet position just is positioned at the mixing tube center.Opening hole for water spraying axis and inlet tube axis angle on the inlet tube is α, and α the best is got 30 °～45 °, and inlet tube evenly is furnished with hole for water spraying on the same cross section.

The utility model control of can lowering the temperature: steam flows into body 3 lower ends by mouth pipe 1 and improves flow velocitys through mixing tube 2 again, water ejects from hole for water spraying through inlet tube, form the moisture film wall one, steam during by the moisture film wall cooling water must penetrate in the steam, cause vapor (steam) temperature to descend comprehensively, the steam direction of motion be following and on, and the movement of falling object is above and descend.So their the direction of motion just in time water droplet of opposite evaporation can not be fallen the bottom.Water droplet is in the landing process, and vapor (steam) temperature is more and more higher, has accelerated water-drop evaporation speed.Its volume is reduced rapidly, just might be blown afloat by steam again, so this attemperator does not have steam trap connection, the cooling water that is sprayed onto in the steam be utilized entirely.The steam that temperature reduces passes through protection tube again, is flowed out by outlet.

Claims (2)

1. vertical Desuperheating device; comprise: inlet tube, outlet, body, protection tube, inlet tube, mixing tube; mixing tube be connected in the body again after protection tube links to each other; inlet tube and body vertical linking to each other of below; outlet and body vertical linking to each other of top; it is characterized in that: body is that vertical direction is installed, and inlet tube links to each other with this upper end, and protection tube is connected in the mixing tube top.

2. vertical attemperator according to claim 1, it is characterized in that opening on the inlet tube hole for water spraying axis and inlet tube axis angle is α, and α the best is got 30 °～45 °, and inlet tube evenly is furnished with hole for water spraying on the same cross section.

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