KR20000038645A - Nozzle for mixing two fluids inside mixing room - Google Patents

Abstract

PURPOSE: A nozzle for mixing two fluids inside mixing room is provided to prevent a state of an intermittent spraying, to maintain a regular spraying form by maximizing a mixed state of liquid with gas and to reduce a failure factor by simplifying a structure according to reducing element numbers. CONSTITUTION: A fluid supplying tube(30) is unitidly formed with double tubes(32)(34) by separating each of two fluids. A fluid distributing part(36) comprises of double tube(38)(40), which are formed a central hole(42) installed on an end of the tube(30) for passing each of the two fluids and a plurality of penetrating holes(44) having a space(46). A liquid distributing part(48) sprays a first fluid connected to the central hole(42) and by forming a plurality of slots(50) to a vertical direction for a tube axis. A distributing tube nozzle(52) for jet spraying by a plurality of nozzle holes(56) forms a mixing room(54) to mix the two fluid with wrapping the liquid distributing part(48) and the fluid distributing part(36) at the same time. A supporting tube(58) unify the two members by installing on an outside of the distributing tube nozzle(52) and the fluid distributing part(36).

Description

2 fluid mixed nozzles

The present invention relates to a two-fluid internal mixing nozzle, and more particularly, to prevent unstable injection according to the injection flow rate conditions in the process of mixing and spraying two different fluids, and the fluid is fine particles The present invention relates to a two-fluid internal mixed nozzle that can be uniformly sprayed into the structure.

2 In-fluid mixed nozzle is used to mix liquid fuel or slurry fuel and gas composed of solid and liquid in the nozzle and then to spray in the reactor to form flame or remove sulfur contained in exhaust gas in semi-dry desulfurization equipment. It is used when spraying lime slurry for the purpose.

These nozzles require continuous and regular injection to form a continuous spraying condition, and internal structural features prevent intermittent spraying due to vibration due to mass ratio and injection pressure of two fluids when the fluid moves. It is designed as a structure.

In FIG. 4, a conventionally known two-fluid internal mixing nozzle is shown in cross-sectional view. The liquid and gas forcibly supplied are respectively provided through a fluid supply pipe 6 formed of a central pipe 2 and an exterior 4 as shown in the drawing. Flows, both gas and liquid are injected from the first distributor 8 disposed at the end of the fluid supply pipe 6 and mixed in the primary mixing chamber 10, and then the holes of the first porous plate 12 While passing through the inclined hole 16 of the second porous plate 14 associated with the holes to have a rotational force in the direction of the tube axis, the cross-section is further uniformly mixed as it passes through the enlarged venturi 18 tube. The liquid and gas mixed through the various components are jet-jetted from the plurality of injection holes 24 via the secondary mixing chamber 22 of the distribution pipe nozzle 20.

Such internally mixed nozzles generate unstable injections, ie intermittent injections and vibrations, depending on the pressure conditions and flow rates of the fluids. The rising price of the nozzle presents a problem.

In addition, it does not matter in the case of liquid flow, but in the case of slurry flows into the tube at high speed, as well as abrasion on the wall surface, clogging occurs in a section having a narrow cross-sectional area is not suitable for the liquid injection of the slurry form.

In addition, the mixed state of the liquid and gas is not smooth, causing an intermittent injection when sprayed through the nozzle, the flame can be turned off is a problem that the operation of the burner that requires a continuous flame is stopped.

The present invention devised to solve these problems is an object of the present invention to provide a nozzle that can be sprayed stably without any damage inside the tube using any fluid, such as liquid, solid and slurry.

In addition, it is another object to maintain a continuous spray shape by maximizing the mixed state of the liquid and gas, and another object is to reduce the number of parts to simplify the structure to reduce the cause of failure and lower the cost To provide.

To this end, the present invention provides a fluid supply pipe in which a plurality of pipes separating and passing two fluids respectively are integrally formed, and a plurality of through-holes having a central hole and a space connected to an end of the fluid supply pipe and passing the two fluids, respectively. A fluid distributor comprising a plurality of distributors in which a ball is formed, a liquid distributor connected to the central hole of the fluid distributor and forming a plurality of slots in a direction perpendicular to the tube axis direction to inject a first fluid; Dispensing pipe nozzles for simultaneously enclosing the fluid dispensing unit, forming a mixing chamber in which two fluids can be mixed, and forming a plurality of nozzle holes to jet-jet, and installed at the outer circumference of the dispensing pipe nozzle and the fluid distributing unit to integrate the two members. It consists of support tube.

Here, the fluid supply pipe may be two pipes having different diameters, and the centers of the pipe axes of the two pipes may coincide with each other.

In addition, the central hole of the fluid distribution part is to change the diameter and the inclined portion is formed in the middle portion to be able to increase the speed of the fluid passing through the central hole.

In addition, a plurality of slots of the liquid distributor are formed to have a shape substantially close to an ellipse so that the fluid is sprayed toward the mixing chamber in a circular or plate shape.

The plurality of nozzle holes may be disposed at the same distance with respect to the tube axis center.

Accordingly, the number of parts is reduced compared to the conventional embodiment, and the structure is simplified, so that the remaining trouble is reduced, and is sprayed through the nozzle in the state of being pulverized into fine particles in the mixing chamber, so that it can be pulverized into finer particles to maintain a uniform mixed state. The simplified internal structure without bending reduces the risk of internal damage even if the slurry passes through.

1 is a cross-sectional view showing a nozzle according to the present invention,

2 is a sectional view seen from A-A of FIG.

3 is a perspective view illustrating a liquid distributor of a nozzle according to the present invention;

4 is a cross-sectional view showing a conventionally known nozzle.

Explanation of symbols on the main parts of the drawings

30: fluid supply pipe 32: center pipe

34: appearance 36: fluid distribution

38: first divider 40: second divider

42: center hole 44: through hole

46: space 48: liquid distributor

50: slot 52: distribution pipe nozzle

54: mixing chamber 56: hall

58: support tube

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In Figure 1, a two-fluid internal mixed nozzle according to the present invention is shown in cross section. For reference, in the present invention, a nozzle for mixing and injecting two fluids of a liquid and a gas is described as an example. The liquid (the first fluid) is an oil refined from crude oil, and the gas (the second fluid) is a conventional external air. Use In particular, both fluids are forcibly supplied so as to generate pressure in the fluid supply pipe described later and flow with flow velocity.

Reference numeral 30 denotes a fluid supply pipe, which is composed of two pipes 32 and 34 having different diameters, and the centers of the two pipes 32 and 34 coincide with each other in the center of the tube axis direction. The second fluid passes between the center tube 32 and the exterior 34.

The fluid distribution part 36 is connected to the end of the fluid supply pipe 30, and the fluid distribution part 36 is a plurality of distributors 38 and 40 coupled to the first distributor 38 and the second. In the distributor 40, the central hole 42 is formed at the center in the direction of the tube axis so as to communicate with the central tube 32.

In particular, the central hole 42 of the first distributor 38 has a diameter reduced to two stages in accordance with the characteristics of the present invention and the middle portion is provided with an inclined portion to increase the speed of the first fluid.

In addition, a plurality of through holes 44 are formed at the same distance to the outside of the central hole 42 as shown in FIG. 2, with the first distributor 38 and the second distributor 40 in the middle thereof. The diameters of the inlet and outlet through holes are different with the space 46 formed therebetween, and the outlet side is formed to be relatively small so that the second fluid, which is a gas, is accelerated in the horizontal direction to mix the distribution pipe nozzles described below. It is ejected into the thread.

On the other hand, in connection with the central hole 42 of the second distributor 40 is arranged a liquid distributor 48 as shown in FIG. The liquid distributor 48 is shown in a substantially cap shape, and a plurality of slots 50 are formed along the outer circumference thereof so that the second fluid moved through the center tube 32 and the center hole 42 is perpendicular to the direction of the tube axis. It is to be able to eject in the direction. In particular, the shape of the slot 50 is close to the elliptical shape so that the second fluid is ejected in a circular or plate shape.

At the ends of the liquid distributor 48 and the second distributor 40, the second fluid jetted through the second distributor 40 and the first fluid jetted through the liquid distributor 48 are mixed with the outside. The distribution pipe nozzle 52 which blows off is arrange | positioned.

Here, the distribution pipe nozzle 52 forms a mixing chamber 54 formed as a space so that the two fluids are mixed more uniformly, and a plurality of nozzle holes 56 are formed on the inclined surface with an annular inclined surface at the end thereof. So that the mixed fluid is ejected.

And the support pipe 58 which integrates two members is provided in the outer periphery of the distribution pipe nozzle 52 and the fluid distribution part 36. As shown in FIG.

Looking at the operation and effect of the two-fluid internal mixed nozzle according to the present invention having such a structure, the first fluid and the second fluid is introduced at the same time through the center tube 32 and the exterior 34 of the fluid supply pipe 30 After the second fluid flows into the space 46 through the inlet through-hole of the fluid distribution part 36, the mixing chamber is provided through the outlet through-hole while maintaining a uniform pressure and speed in a state in which the speed is reduced. 54). At this time, as the exit through hole becomes smaller than the inlet through hole, it accelerates and is ejected into the mixing chamber 54.

On the other hand, the first fluid passing through the center tube 32 is increased in speed while passing through the central hole 42 of the first distributor 38 and the second distributor 40 constituting the fluid distributor 36. This is possible because the diameter of the center hole 42 is narrower than the side on which the second fluid flows, and the inclined portion formed in the center hole 42 enables the smooth movement of the first fluid.

The first fluid that has passed through the central hole 42 is introduced into the liquid distributor 48, spun in a circular or plate shape through a plurality of slots 50 formed in the liquid distributor 48, and flows into the mixing chamber 54. Micronized and mixed with the first fluid.

In a state where the first fluid and the second fluid are mixed, they are ejected to the outside through the plurality of holes 56 of the distribution pipe nozzle 52.

The fluid ejected through the process as described above is increased through the through hole 44 and the center hole 42, and is smoothly mixed in the state of fine particles in the mixing chamber 54 and then ejected by spraying instability and It prevents the atomization failure state.

As described above, the embodiment of the present invention substantially solves the conventional problems.

That is, since the first fluid is ejected to the mixing chamber in the horizontal direction and the second fluid is maintained in the vertical direction to maintain the mixed state due to the collision, smooth mixing is possible and the liquid and slurry can be finely atomized. It is possible to maintain a constant flame shape when sprayed to.

In addition, the number of parts can be reduced, which significantly reduces the cause of failures, and the unit cost can be lowered, thereby enhancing product competitiveness.

Claims (2)

In a two-fluid internal mixed nozzle for mixing the two fluids in a combustion device and a desulfurization facility and injecting them into the reaction chamber to form a flame required for combustion and to remove sulfur, A plurality of pipes 32 and 34 for separating and passing the two fluids respectively are integrally formed with a fluid supply pipe 30 and a center connected to an end of the fluid supply pipe 30 to pass two fluids, respectively. A fluid distributor 36 composed of a plurality of distributors 38 and 40 formed with a plurality of through holes 44 having a ball 42 and a space 46, and a center of the fluid distributor 36; The liquid distributor 48, which is connected to the ball 42 and forms a plurality of slots 50 in a direction perpendicular to the tube axis direction, injects the first fluid, and the liquid distributor 48 and the fluid distributor 36 A distribution pipe nozzle 52 which simultaneously encloses and forms a mixing chamber 54 in which two fluids can be mixed, and a plurality of nozzle holes 56 are formed and jetted, and the distribution pipe nozzle 52 and the fluid distribution It is characterized by consisting of a support tube 58 installed on the outer periphery of the back portion 36 to integrate these two members. Internal mixing type two-fluid nozzle. The method of claim 1, wherein the plurality of slots 50 of the liquid distributor 48 is formed in a shape close to the long oval in the circumferential direction so that the fluid is sprayed toward the mixing chamber 54 in a circular or plate shape 2 Fluid mixed nozzles.