Injector

 

The invention relates to energy, namely the technique of spraying fluid with compressed air or steam in the process chambers for the combustion of liquid (gaseous) fuel boilers for atomizing liquids, in particular slurries, solutions, suspensions. The technical result consists in increasing the quality of atomization and the service life of nozzles without disassembly, is ensured by the fact that in the nozzle, comprising a housing, coaxially located within the housing channels to generate parallel streams of work environments and posted to the outlet nozzle secretively stream representing an evenly spaced ring forming the input, through the channels, are tangentially to the side wall of the channel to move the thread screwed the working environment and connecting it to the channel for moving the twisting of the environment, according to the invention, each of the input through the feeds additionally focused inside of the side wall with an angle of slope along the expiry of the environment. 3 C.p. f-crystals, 2 Il.

The invention relates to energy, in particular to a technique of spraying fluid with compressed air or steam in the process chambers according to Energetichesky devices and for spraying liquids, in particular slurries, solutions, suspensions.

Known for the design of the nozzle, comprising a housing with an Autonomous Central and peripheral fuel channels and the swirling chamber with a Central outlet nozzle and the inlet tangential channels made in the side wall of the chamber and connected to one of the fuel channels through axial holes in the distribution plate (see kN. Borodin C. A. and other Atomization of liquids. M., engineering, 1968, S. 115, Fig. 61).

The disadvantage of this nozzle is of low reliability due to the complexity of the design.

In addition, it does not allow to achieve high quality atomization of fuel, especially at low pressure of its filing.

The famous design of the nozzles selected as the closest analogue, comprising a housing, coaxially located within the housing channels to generate parallel streams of work environments and secretively stream representing an evenly spaced ring forming the input through the channels, are tangentially to the side wall of the channel for the flow of the medium which is supposed to be spinning, and connecting it to the channel for AC is looking at the benefits of disadvantages it is possible to distinguish the presence of leakage of fuel through the zone meetings jets working environments at the time of unstable conditions in this zone, that significantly reduces the quality of fuel atomization.

In addition, this construction of the nozzle does not allow to achieve high quality of fuel atomization in the case of low pressure at the flow and small flow of the spray agent.

And another drawback of this design, like many others, is a fast sakartveloshi fuel channel and, as a consequence, the need for frequent removal of the nozzle with the purpose of cleaning the fuel channel.

Thus, the technical result for the solution of which directed this invention is a substantial improvement in the quality of the spray, and if different, including at low pressure fuel supply, as well as the almost complete elimination of the problem of coking of the fuel channel of the nozzle and, consequently, increase the service life of nozzles without disassembly, and hence the service life of the boiler as a whole.

This technical result is achieved by the fact that in the known nozzle, comprising a housing, coaxially located within the housing channels to generate parallel streams of work environments and posted to the outlet nozzle secretively stream representing evenly spaced on calcev the current launching of the working environment and connecting it to the channel to move the thread twisting of the working environment, according to the invention, each of the input through the feeds additionally focused inside of the side wall with an angle of slope along the expiry of the working environment.

When this input, pass-through channels are, at least in one stage.

With each subsequent tier of the input, pass-through channels are offset relative to the previous tier.

And by removal of the layer from the output nozzle of the injector is reduced tangential component input through channel and increases its angle.

Additional orientation of each of their input through channels inside the side wall angle of the slope along the expiry of the working environment contributes to a significant improvement of the quality of atomization of the liquid fuel and, in particular, at low pressure of its submission, and a small flow of the spray agent, and significantly reduces the risk of sakartveloshi fuel channel of the nozzle and, consequently, significantly increases the service life of nozzles without its removal, and hence the resource of the boiler as a whole.

This is achieved, first, by pre-crushing the jet of the working environment, in particular fuel, which begins in the fuel channel, at the level of the outlet conscious channel flow, in particular atomizer.

Secondly, due to the claimed additional end-to-end orientation of the input channels occurs a phenomenon (effect) ejection, which provides additional suction fuel flow to the atomizer after meeting these flows in the fuel channel. Due to this, it is possible to work with low-pressure (without fuel pump) gravity systems or low pressure.

Due to the effect of ejection is also provided and the optimum water content and fuel vapor mixture is not more than 8%, and thus improves the combustion process and, as a result, reduces harmful emissions.

Prior to fragmentation of the jet fuel directly into the channel ensures that there is no phenomenon of leakage of fuel into the zone meetings crossed streams, especially when this area is insufficiently robust (for example, in moments of expansion or contraction of the torch). Thus expands the geometry of the area of regulation of the size of the torch, and with optimal quality of the combustible mixture, and then further reduces the emission of harmful impurities.

In addition, due to the effect of ejection is regular cleaning of the fuel channel, which in turn prevents its coking.kotoroy delay submission of steam-air mixture, moreover, due to the effect ejection cleans not only the output of the fuel channel, but also the underlying part of the fuel channel, which in turn helps to eliminate the main causes of the exit nozzle of the system - coking of the fuel channel. This allows much longer to remove the nozzle, and therefore, can increase the service life of the boiler.

Execution skotnyj channels in more than one tier contributes to an even greater extent the solution before the invention of the tasks. This is because many tiers through channels made in the fuel channel, as many times increases the fragmentation of fuel flow, the effect ejection of the fuel channel, i.e., those advantages that enabled us to achieve high quality of fuel atomization and, in particular, at low pressure of its submission, and a small flow of the spray agent.

The location of the through channels in the subsequent tiers with an offset from the previous layer to an even greater extent contributes to the solution before the invention of the tasks. This is due to the fact that the atomizer is included in the fuel channel through shifted through the channels of their tier, also shifted and osushestvlya quality crushing flow, with the exception of the gaps that occur when splitting the flow of the fuel in the same tier.

While the authors experimentally established that the stacked arrangement of the through holes, the best results are achieved under the condition of reduction of the tangential component and the increase of the angle through channel by removal of the layer from the output nozzle.

The invention is illustrated by drawings.

In Fig. 1 shows a schematic diagram of the device of Fig.2 shows a schematic diagram of a device for positioning through holes in two tiers.

The nozzle consists of a casing 1, the inner 2 and outer 3 sleeve forming with the casing 1 and between a coaxial channels to generate parallel streams of liquid fuel in the middle channel 4 and the threads of the atomizer in the inner channel 5 and the outer channel 6. In the wall of the outer sleeve 3 is made through the channels 7, which connects the outer channel 6 for atomizer and the average channel 4 for liquid fuel. Through the channels 7 are oriented inside wall of the outer sleeve 3 tangentially with the angle of slope along the expiry of the liquid fuel.

Through the channels 7 are arranged on the ring forming the outer surface of the outer sleeve 3.

Nozzle ment done so, he changes the flow nozzle moving along the inner channel 5 at an angle to the flow of fuel coming out of the middle channel 4.

The angle of slope along the expiry of the liquid fuel represents the angle () tilt Central axis of the through channel 7 with respect to the Central axis of the middle channel 4, which moves the fuel flow.

In a variant of the arrangement of through-channels 7 in two tiers through the channels 7 of the second tier are located along a circular generatrix with a shift towards end-to-end channels 7 of the first tier.

Thus through the channels 7 in the second tier have the angle () tilt Central axis of the through channel 7 with respect to the Central axis of the middle channel 4, more than the same angle (in the first tier. The tangential component of the through channel 7 in the second tier is less than the tangential component of the through-channel in the first tier.

The device operates as follows.

In the middle of the channel 4 is fuel. In the inner 5 and outer 6 channels served spray (steam or air). Spray on channels 5 and 6 and the fuel channel 4 to tier pass-through channels 7 are moved Pld 6, changes direction and begins its movement through the channels 7. The output of these through channels 7, which are located in the middle channel 4, the flow of spray from the outdoor channel 6 meets with fuel flow, moving along the middle channel 4. Narrowing the flow of the fuel into many small streams. At the same time due to the tangential orientation of the through channel 7 and the angle of the slope along the expiry of the liquid fuel, there is the twisting of the flow of fuel flow to the atomizer. At the exit of the nozzle is already pre-crushed and twisted the fuel flow is faced additionally with a stream of spray, moving on the inner channel 5, which is due to the element 8 at the outlet of the inner channel 5 moves at an angle to its initial movement, twisted and crushed even more. Thus, at the exit of the injector fuel flow gets the maximum forward and maximum crushing, which ultimately provides high quality atomization of fuel and, as a consequence, a complete burnout of the fuel within the combustion chamber and the minimum number of harmful substances.

To avoid coking of the middle channel 5 (fuel channel) the outdoor channel 6. Moving first through the outer channel 6, and then on the cross-channel 7 flow atomizer cleans residual fuel themselves part of the middle channel 4 next to the through channels 7 (in the direction of fuel), and due to the effect of the ejection - side of the middle channel 7, located to tier pass-through channel 7.

If there are two or more tiers of through channels 7 nozzles similar. The difference is only that the flow nozzle moving along the outer channel 6, twice changes its direction, for the first time at the level of the second tier, and the second time at the level of the first tier.

Claims

1. Nozzle, comprising a housing, coaxially located within the housing channels to generate parallel streams of work environments and posted to the output nozzle, secretively stream representing an evenly spaced ring forming the input through the channels, are tangentially to the side wall of the channel to move the thread screwed the working environment and connecting it to the channel for moving the twisting of the environment, characterized in that each of the input through the feeds additionally focused inside of the side wall with orogeny, in at least one tier.

3. Nozzle under item 1 or 2, characterized in that each subsequent layer is input through the channels are offset relative to the previous tier.

4. Nozzle under item 1, or 2, or 3, characterized in that as the distance of the layer from the output nozzle of the nozzle decreases the tangential component of the through-channel and increases its angle.

 

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