CN216619864U - Cold slag hopper and slag conveyor - Google Patents

Abstract

The utility model relates to the field of power plant mechanical equipment, and provides a cold slag hopper and a slag conveyor. Cold sediment is fought, is located the fight well of top and the bucket body that is located the below including interconnect, and the junction of fighting well and bucket body is provided with first condenser tube along a week of bucket body, is provided with a plurality of first liquid holes on the condenser tube, and a plurality of first liquid holes distribute along first condenser tube's extending direction, and every first liquid hole goes out the liquid direction orientation bucket body. The slag dragging machine comprises the cold slag hopper. The slag cooling hopper can well realize the cooling of the hopper body through the arranged cooling water pipe, and avoid the problems of slag leakage caused by burning through the hopper wall, increase of air leakage rate of a boiler, crisis unit and life safety.

Description

Cold slag hopper and slag conveyor

Technical Field

The utility model relates to the field of power plant mechanical equipment, in particular to a cold slag hopper and a slag conveyor.

Background

The slag cooling bucket of the slag conveyor is important equipment of a power plant, is arranged between the water wall cold ash bucket and the slag conveyor, and has the main function of collecting coal slag and coke blocks after coal powder is combusted. At present, a main stream cold slag hopper is designed into an upper rectangular slag well, a water seal or a non-metal expansion joint is adopted between the slag well and a water wall cold ash hopper for sealing, the lower part of the slag hopper is a trapezoidal slag hopper, the lower part of the slag hopper is inserted into a slag ship of a slag conveyor to form a water seal, and burned coal slag falls into the slag ship after being collected by the cold slag hopper and is taken away by the slag conveyor. The inner wall of the cold slag hopper is usually laid with 200-300mm refractory castable to prevent the slag hopper from being burnt through due to high temperature in the furnace.

As the national policy changes, each power plant is successively transformed into ultralow emission, the oxygen-enriched combustion of the whole hearth is realized after the transformation, the flame center of the hearth moves downwards, the temperature of a boiler cold slag hopper area rises, and the temperature can reach 900 ℃ at most. Meanwhile, with the current power grid deep peak shaving, the load of a power plant is often greatly changed in a short time, the temperature change of a cold slag hopper area is large, the coke collapse phenomenon of a hearth is frequent, and the castable falls off seriously. The phenomenon of slag leakage is easy to occur due to burning through of the wall of the hopper without the protection of the castable, so that the air leakage rate of the boiler is increased, and the safety of a unit and the personal safety is endangered.

In view of this, the present application is specifically made.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a new cold slag hopper and slag conveyor which ameliorates at least one of the problems mentioned in the background of the utility model.

Embodiments of the utility model may be implemented as follows:

in a first aspect, the utility model provides a cold slag hopper, which comprises a hopper well and a hopper body, wherein the hopper well is positioned above the hopper body, the hopper body is positioned below the hopper well, a first cooling water pipe is arranged at the joint of the hopper well and the hopper body along the periphery of the hopper body, a plurality of first liquid outlet holes are formed in the cooling water pipe, the plurality of first liquid outlet holes are distributed along the extending direction of the first cooling water pipe, and the liquid outlet direction of each first liquid outlet hole faces the hopper body.

In an optional embodiment, a channel steel is arranged at the joint of the hopper well and the hopper body, and the first cooling water pipe is positioned at an included angle formed by the channel steel and the hopper body.

In an optional implementation manner, a second cooling water pipe is further arranged outside the bucket body, a plurality of second liquid outlet holes are formed in the second cooling water pipe, the second liquid outlet holes are distributed along the extending direction of the second cooling water pipe, and the liquid outlet direction of each second liquid outlet hole faces the outer wall of the bucket body.

In an optional embodiment, the included angle between the liquid outlet direction of the second liquid outlet hole and the outer wall of the bucket body is 25-35 degrees.

In an optional embodiment, a nozzle communicated with the first liquid outlet hole is arranged at each first liquid outlet hole corresponding to the first cooling water pipe, and a nozzle communicated with the second liquid outlet hole is arranged at each second liquid outlet hole corresponding to the second cooling water pipe.

In an optional embodiment, the distance between two adjacent first liquid outlet holes is 300-500 mm, and the distance between two adjacent second liquid outlet holes is 300-500 mm.

In an alternative embodiment, the first cooling water pipe and/or the second cooling water pipe are made of 310S stainless steel.

In an alternative embodiment, the distance between the second cooling water pipe and the outer wall of the bucket body is 200-300 mm.

In a second aspect, the present invention provides a slag conveyor comprising at least one cold slag hopper according to any one of the preceding embodiments.

In an optional embodiment, the slag cooling device comprises a plurality of cold slag hoppers which are connected in sequence side by side.

The beneficial effects of the embodiment of the utility model include, for example:

the cold slag bucket that obtains through above-mentioned design because the concrete setting of the first condenser tube of junction of bucket well and bucket body can cool down to the bucket body, and the velocity of water flow adjustment in the velocity of cooling accessible condenser tube, then the liquid hole discharge velocity of water flow is fast and then makes the velocity of cooling fast when the velocity of water flow in the condenser tube is big, otherwise then the speed is slow. Therefore, the cold slag fill that this application provided, through the condenser tube who sets up, can fine realization bucket body cooling, avoid the bucket wall to burn through the problem emergence of leaking the sediment phenomenon, boiler air leakage rate increase, crisis unit and life safety.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic half-section structure view of a cold slag hopper provided in an embodiment of the present application;

FIG. 2 is a schematic structural view of a first cooling water pipe;

FIG. 3 is a half-sectional view of a structure formed by three cold slag hoppers connected in parallel;

fig. 4 is a water passage layout diagram of the first cooling water pipe and the second cooling water pipe.

Icon: 100-a cold slag hopper; 110-bucket well; 120-a bucket body; 130-a first cooling water pipe; 131-a first liquid outlet; 132-a nozzle; 140-channel steel; 150-a second cooling water pipe; 11-grey water circulation mother pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the products of the present invention are used, the description is merely for convenience of description and simplification, but the terms do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are only used to distinguish one description from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1 to 4, the present embodiment provides a cold slag bucket 100, which includes a bucket well 110 located above and a bucket body 120 located below, a first cooling water pipe 130 is disposed at a joint of the bucket well 110 and the bucket body 120 along a circumference of the bucket body 120, a plurality of first liquid outlet holes 131 are disposed on the cooling water pipe, the plurality of first liquid outlet holes 131 are distributed along an extending direction of the first cooling water pipe 130, and a liquid outlet direction of each first liquid outlet hole 131 faces the bucket body 120.

The cold slag fill 100 that the embodiment of this application provided, set up first condenser tube 130 at the junction of bucket well 110 and bucket body 120, and set up out the liquid hole on it, let in cooling water in to first condenser tube 130, cooling water discharges towards bucket body 120 from going out the liquid hole, can play the effect to the bucket body 120 cooling, the velocity of water regulation in the cooling rate accessible condenser tube, the velocity of water is fast and then makes the cooling rate fast when the velocity of water in the condenser tube is big then the liquid hole discharge velocity of water is discharged, otherwise then the velocity is slow.

Therefore, the slag cooling bucket 100 provided by the application can well realize the cooling of the bucket body 120 through the cooling water pipe arranged, and avoid the phenomena of slag leakage caused by the burning-through of the bucket wall, the increase of the air leakage rate of the boiler, and the occurrence of the problems of crisis units and life safety.

Preferably, a channel steel 140 is arranged at the joint of the bucket shaft 110 and the bucket body 120, and the first cooling water pipe 130 is located at an included angle formed by the channel steel 140 and the bucket body 120.

The channel steel 140 is pre-buried in the cold slag hopper 100 during construction, and is used for preventing the first cooling water pipe 130 from being broken by coke collapse of the hearth.

Further, to ensure the protection effect of the first cooling water pipe 130, the channel 140 used is a 10# channel 140.

Preferably, a second cooling water pipe 150 is further disposed outside the bucket body 120, a plurality of second liquid outlet holes are disposed on the second cooling water pipe 150, the second liquid outlet holes are distributed along the extending direction of the second cooling water pipe 150, and the liquid outlet direction of each second liquid outlet hole faces the outer wall of the bucket body 120.

The second cooling water pipe 150 is provided to cool the outer wall of the bucket body 120, so that the bucket body 120 can be cooled more uniformly and more rapidly.

Further, in order to uniformly cool the slag cooling bucket 100, the first liquid outlet holes 131 on the first cooling water pipe 130 are uniformly distributed along the extending direction of the first cooling water pipe 130, and the second liquid outlet holes on the second cooling water pipe 150 are uniformly distributed along the extending direction of the second cooling water pipe 150.

Further, the liquid outlet direction of the second liquid outlet hole forms an angle of 30 ° with the outer wall of the bucket body 120.

When the included angle between the liquid outlet direction and the outer wall of the bucket body 120 is 30 degrees, the cooling water is good in wall pasting effect, the cooling effect of the bucket body 120 is better, and the cooling liquid can be effectively prevented from splashing.

It should be noted that, in other embodiments of the present application, an included angle between the liquid outlet direction of the second liquid outlet hole and the outer wall of the bucket body 120 may also be 25 ° or 35 °, and as long as the included angle range is within a range of 25 to 35 °, the included angle range may be adjusted according to specific needs.

Further, the distance between the second cooling water pipe 150 and the outer wall of the bucket body 120 is 200-300mm, such as 200mm, 250mm or 300 mm.

When the distance between the second cooling water pipe 150 and the bucket body 120 is within the above range, the cooling water can be ensured to fully cover the outer wall of the bucket body 120, and a more uniform cooling effect is achieved.

Further, a nozzle 132 communicated with the first liquid outlet hole 131 is arranged at the position of the first cooling water pipe 130 corresponding to each first liquid outlet hole 131, and a nozzle 132 communicated with the second liquid outlet hole is arranged at the position of the second cooling water pipe 150 corresponding to each second liquid outlet hole.

The nozzle 132 is arranged at the liquid outlet hole to control the water outlet direction to be the nozzle 132.

Further, the distance between two adjacent first liquid outlet holes 131 is 400mm, and the distance between two adjacent second liquid outlet holes is 400 mm.

When the distance between the liquid outlet holes is set to be 400mm, the proper water outlet density can be ensured, and the better cooling effect is ensured.

It should be noted that, in other embodiments of the present application, the distance between adjacent liquid outlet holes may be set to 300mm, 350mm, 450mm, or 500mm, and the distance may be adjusted according to the use requirement as long as it is within the range of 300-500 mm.

Further, the first cooling water pipe 130 and/or the second cooling water pipe 150 are made of 310S stainless steel.

The 310S stainless steel has better mechanical property, and the cooling water pipe made of the 310S stainless steel has longer service life.

Further, the cold slag hopper 100 provided by the embodiment of the application can use grey water generated by a power plant as cooling water during use, that is, the first cooling water pipe 130 and the second cooling water pipe 150 are both connected with the grey water circulation main pipe 11, so that grey water circulation is realized, and no additional water resource is wasted.

In summary, according to the cold slag bucket 100 provided by the present application, since the specific arrangement of the first cooling water pipe 130 at the joint of the bucket well 110 and the bucket body 120 can cool the bucket body 120, the cooling rate can be adjusted by the water flow speed in the cooling water pipe, when the water flow speed in the cooling water pipe is high, the water flow speed discharged from the liquid outlet hole is high, and further the cooling rate is high, otherwise, the cooling rate is low. Therefore, the slag cooling bucket 100 provided by the application can well realize the cooling of the bucket body 120 through the cooling water pipe arranged, and avoid the phenomena of slag leakage caused by the burning-through of the bucket wall, the increase of the air leakage rate of the boiler, and the occurrence of the problems of crisis units and life safety.

Furthermore, the channel steel 140 is embedded at the connection part of the hopper well 110 and the hopper body 120, and the first cooling water pipe 130 is positioned at the included angle formed by the channel steel 140 and the side wall of the hopper body 120, so that the hearth can be prevented from being broken by coke and breaking the first cooling water pipe 130.

The embodiment of the application also provides a slag conveyor, which comprises the cold slag hopper 100 provided by the embodiment of the application. The slag conveyor has good safety because the slag conveyor comprises the cold slag hopper 100 provided by the application.

Further, the slag conveyor comprises a plurality of cold slag hoppers 100, and the cold slag hoppers 100 are connected in sequence and side by side.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a cold sediment is fought, its characterized in that includes the bucket well that interconnect is located the top and the bucket body that is located the below, the bucket well with the junction of bucket body is followed a week of bucket body is provided with first condenser tube, be provided with a plurality of first liquid holes on the condenser tube, it is a plurality of first liquid hole is followed first condenser tube's extending direction distributes, every the play liquid direction orientation in first liquid hole the bucket body.

2. The cold slag hopper of claim 1, wherein a channel steel is arranged at the joint of the hopper well and the hopper body, and the first cooling water pipe is positioned at an included angle formed by the channel steel and the hopper body.

3. The cold slag bucket according to claim 1, wherein a second cooling water pipe is further arranged outside the bucket body, a plurality of second liquid outlet holes are formed in the second cooling water pipe, the plurality of second liquid outlet holes are distributed along the extending direction of the second cooling water pipe, and the liquid outlet direction of each second liquid outlet hole faces the outer wall of the bucket body.

4. The cold slag bucket according to claim 3, wherein an included angle between the liquid outlet direction of the second liquid outlet hole and the outer wall of the bucket body is 25-35 degrees.

5. The cold slag bucket according to claim 3, wherein a nozzle communicated with the first liquid outlet hole is arranged at each first liquid outlet hole of the first cooling water pipe, and a nozzle communicated with the second liquid outlet hole is arranged at each second liquid outlet hole of the second cooling water pipe.

6. The cold slag bucket according to claim 3, wherein the distance between two adjacent first liquid outlet holes is 300-500 mm, and the distance between two adjacent second liquid outlet holes is 300-500 mm.

7. The cold slag hopper according to claim 3, wherein the first cooling water pipe and/or the second cooling water pipe are made of 310S stainless steel.

8. A cold slag bucket according to any one of claims 3 to 7, wherein the second cooling water pipe is spaced from the outer wall of the bucket body by 200 to 300 mm.

9. A slag conveyor, characterized in that it comprises at least one cold slag hopper according to any one of claims 1 to 8.

10. The slag conveyor according to claim 9, comprising a plurality of said cold slag hoppers connected side by side in sequence.

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