CN209744372U - Porous coal water slurry nozzle - Google Patents

Abstract

The utility model discloses a porous coal slurry nozzle, nozzle upper portion is provided with the coal slurry entry, and the coal slurry entry sets up to obconical, and coal slurry entry bottom is connected with the export, goes up the export and sets up to conical, goes up the export lower part and is provided with down the export, and the export setting is on the base down, and the base sets up to cylindrical. The maximum diameter of the cone of the upper outlet is smaller than that of the coal water slurry inlet. The diameter of the base is larger than the maximum diameter of the coal water slurry inlet. A transition area is further arranged between the upper outlet and the base, and the diameter of the transition area is the same as the maximum diameter of the upper outlet. The upper outlets and the lower outlets are staggered in the vertical direction. The upper part of the coal water slurry inlet is also connected with a snap ring. The water-coal-slurry nozzle has long service life, high combustion efficiency of water-coal-slurry and high heat utilization rate.

Description

Porous coal water slurry nozzle

Technical Field

The utility model belongs to boiler accessory processing field, concretely relates to porous coal slurry nozzle.

Background

The high-temperature alloy is a metal material which takes iron, nickel and cobalt as the base and can work for a long time at the high temperature of more than 600 ℃ under the action of certain stress; and has high-temperature strength, good oxidation resistance and corrosion resistance, good fatigue performance, good fracture toughness and other comprehensive properties. The high-temperature alloy is a single austenite structure and has good structure stability and use reliability at various temperatures.

The nozzle is one of the key parts in the coal water slurry burner, the structural rationality determines the atomization effect of the coal water slurry, the abrasion resistance and thermal shock resistance of the material determine the service life of the nozzle, and directly influences the economy and safety of the application of the coal water slurry.

SUMMERY OF THE UTILITY MODEL

The utility model provides a porous coal slurry nozzle, the use of this equipment can obviously improve the combustion effect of coal slurry and the life of nozzle.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a porous coal slurry nozzle, nozzle upper portion is provided with the coal slurry entry, and the coal slurry entry sets up to the obconic shape, and coal slurry entry bottom is connected with the export, and the export sets up to the conic shape on going up, and the export lower part is provided with down the export, and the export setting is on the base down, and the base sets up to cylindrical.

Preferably, the conical maximum diameter of the upper outlet is smaller than the maximum diameter of the coal-water slurry inlet.

Preferably, the diameter of the base is larger than the maximum diameter of the coal water slurry inlet.

Preferably, a transition area is further arranged between the upper outlet and the base, and the diameter of the transition area is the same as the maximum diameter of the upper outlet.

preferably, the upper outlets and the lower outlets are staggered in the vertical direction.

Preferably, the upper part of the coal water slurry inlet is also connected with a snap ring.

Compared with the prior art, the beneficial effects of the utility model are that: the nozzle with the structural design not only adopts high-temperature-resistant and wear-resistant materials, but also has the characteristics of high hardness, high elastic modulus, good red hardness, small linear expansion coefficient, acid resistance, alkali resistance and oxidation resistance, and the two connected conical and cylindrical structural designs are additionally arranged, so that the coal water slurry is sprayed out from the upper row of nozzles and the lower row of nozzles, the combustion efficiency is improved, and the backflow of the coal water slurry is formed through the difference of the diameters, and the combustion efficiency is improved.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a perspective view of the nozzle of the present invention;

FIG. 2 is a top view of the nozzle of the present invention;

Fig. 3 is a bottom view of the nozzle of the present invention;

In the figure: 1. the coal water slurry inlet, 2, the upper outlet, 3, the lower outlet, 4, the base, 5, the transition area, 6 and the clamping ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1-3, the present invention provides a technical solution: a coal water slurry inlet 1 is arranged on the upper portion of the nozzle, the coal water slurry inlet is arranged to be in an inverted cone shape, an upper outlet 2 is connected to the bottom of the coal water slurry inlet, the upper outlet is arranged to be in a cone shape, a lower outlet 3 is arranged on the lower portion of the upper outlet, the lower outlet is arranged on a base 4, and the base is arranged to be in a cylindrical shape. The maximum diameter of the cone of the upper outlet 2 is smaller than the maximum diameter of the coal-water slurry inlet 1. The diameter of the base 4 is larger than the maximum diameter of the coal water slurry inlet 1. A transition area 5 is also arranged between the upper outlet 2 and the base 4, and the diameter of the transition area is the same as the maximum diameter of the upper outlet. The upper outlets 2 and the lower outlets 3 are staggered in the vertical direction. The upper part of the coal water slurry inlet 1 is also connected with a snap ring 6.

The whole nozzle is clamped on the coal water slurry injection machine by utilizing the clamping ring 6, and the coal water slurry is injected by matching with the seal head at the lower part of the base when in use. The coal water slurry sprayed out by the spraying machine enters a coal water slurry inlet 1 and enters an upper outlet 2, part of the coal water slurry is sprayed out from the upper outlet, the sprayed coal water slurry flows downwards under the blockage of the inclined surface of the coal water slurry inlet 1, the coal water slurry which is not completely sprayed out enters a base 4 after passing through a conical channel at the upper outlet 2, the coal water flows back under the blockage of an end socket at the lower part of the base 4, the reflowed coal water slurry is sprayed out through a lower outlet 3, the coal water slurry sprayed out through the lower outlet 3 on the base 4 and the coal water slurry sprayed out from the upper outlet 2 and reflows are mutually impacted and then flow around.

although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A porous coal water slurry nozzle is characterized in that: the coal water slurry inlet (1) is arranged at the upper part of the nozzle, the coal water slurry inlet is arranged to be in an inverted cone shape, the bottom of the coal water slurry inlet is connected with an upper outlet (2), the upper outlet is arranged to be in a cone shape, a lower outlet (3) is arranged at the lower part of the upper outlet, the lower outlet is arranged on the base (4), and the base is arranged to be in a cylindrical shape.

2. The porous coal-water slurry nozzle according to claim 1, wherein: the conical maximum diameter of the upper outlet (2) is smaller than the maximum diameter of the coal water slurry inlet (1).

3. The porous coal-water slurry nozzle according to claim 1, wherein: the diameter of the base (4) is larger than the maximum diameter of the coal water slurry inlet (1).

4. The porous coal-water slurry nozzle according to claim 1, wherein: a transition area (5) is further arranged between the upper outlet (2) and the base (4), and the diameter of the transition area is the same as the maximum diameter of the upper outlet.

5. the porous coal-water slurry nozzle according to claim 1, wherein: the upper outlets (2) and the lower outlets (3) are staggered in the vertical direction.

6. A porous coal-water slurry injector according to claim 1, 2 or 3, wherein: the upper part of the coal water slurry inlet (1) is also connected with a snap ring (6).