CN220148219U

CN220148219U - Coal bucket structure

Info

Publication number: CN220148219U
Application number: CN202321602891.9U
Authority: CN
Inventors: 李博宇
Original assignee: Guoneng Suizhong Power Generation Co ltd
Current assignee: Guoneng Suizhong Power Generation Co ltd
Priority date: 2023-06-21
Filing date: 2023-06-21
Publication date: 2023-12-08
Anticipated expiration: 2033-06-21

Abstract

The utility model relates to a coal bucket structure, including the coal bunker that holds the raw coal, the coal bunker includes a plurality of interior storehouse walls and connects two adjacent interior storehouse walls and be used for guiding the transition storehouse wall of buggy, the contained angle between transition storehouse wall and the interior storehouse wall rather than adjacent is the obtuse angle, compare for the right angle among the prior art, the extrusion that the contained angle department raw coal that the constitution was obtuse angle received is less, can reduce the probability that the coal hanging takes place, make the whereabouts in the coal space that falls that the raw coal encloses in a plurality of interior storehouse walls and transition storehouse wall more smooth and easy.

Description

Coal bucket structure

Technical Field

The present disclosure relates to the field of coal processing equipment, and in particular, to a coal bucket structure.

Background

The raw coal bin (namely the coal hopper) in the thermal power plant is generally in an inverted square cone shape, and when the raw coal bin is used for discharging, the raw coal is extremely easy to harden on the inner wall of the raw coal bin due to extrusion of the raw coal to the bin wall, and the raw coal is gradually arched to cause coal covering and coal blocking. In the related art, the included angle of the adjacent bin walls of the raw coal bin is usually a right angle, so that coal materials are easier to squeeze coal hanging at the included angle of the raw coal bin, and then arching is gradually formed, so that coal blockage is caused.

Disclosure of Invention

The utility model provides a purpose of this coal scuttle structure, this coal scuttle structure solves above-mentioned partial technical problem at least, is provided with the transition bin wall that is used for guiding buggy between two adjacent interior bin walls of this coal scuttle structure coal bunker, and the contained angle between transition bin wall and the adjacent interior bin wall is the obtuse angle, compares for the right angle among the prior art, and the extrusion that the contained angle department raw coal of constitution for the obtuse angle received is less, can reduce the probability that the coal hanging takes place, makes the coal that falls more smooth and easy.

In order to achieve the above purpose, the present disclosure provides a coal bunker structure, including the coal bunker that is used for holding raw coal, the coal bunker includes a plurality of interior storehouse walls and connects two adjacent interior storehouse walls be used for guiding the transition storehouse wall of buggy, transition storehouse wall and rather than adjacent contained angle between the interior storehouse wall be the obtuse angle, a plurality of interior storehouse wall with transition storehouse wall encloses into the coal space.

Optionally, the coal bin comprises four inner bin walls, an included angle between planes of any two adjacent inner bin walls is a right angle, and a transition bin wall is arranged between any two adjacent inner bin walls.

Optionally, the coal bin is constructed as a chamfer platform structure, and the cross-sectional area of the coal dropping space gradually reduces from top to bottom along the vertical direction.

Optionally, the coal dropping space is constructed as a chamfer platform structure.

Optionally, steel lining plates are paved on the inner bin wall and the transition bin wall of the coal bin.

Optionally, the steel lining plate is formed by splicing a plurality of steel lining single plates.

Optionally, the steel lining plate is plug welded to the inner wall of the coal bunker.

Optionally, the steel lining plate has a thickness of 4mm to 8mm.

Optionally, a reinforcing rib is arranged on the outer wall of the coal bin.

Optionally, the reinforcing ribs include a first reinforcing rib and a second reinforcing rib, the first reinforcing rib is circumferentially arranged along the coal bunker outer wall, and the second reinforcing rib is arranged between two adjacent first reinforcing ribs.

Through above-mentioned technical scheme, the coal bunker structure is including holding the coal bunker of raw coal, and the coal bunker includes a plurality of interior storehouse walls and connects two adjacent interior storehouse walls and be used for guiding the transition storehouse wall of buggy, and the contained angle between transition storehouse wall and the adjacent interior storehouse wall is the obtuse angle, compares with the right angle in the correlation technique, and the extrusion that the raw coal received is less for obtuse angle department of structure, can reduce the probability that the coal of hanging takes place, makes the whereabouts in the coal space that falls that the coal encloses in a plurality of interior storehouse walls and transition storehouse wall more smooth and easy.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a schematic diagram of a coal bucket structure provided in an exemplary embodiment of the present disclosure;

FIG. 2 is a side schematic view of a coal bucket structure provided in an exemplary embodiment of the present disclosure;

fig. 3 is a cross-sectional view A-A in fig. 2.

Description of the reference numerals

10-a discharging part; 20-valve; 30-reinforcing ribs; 31-first reinforcing ribs; 32-second reinforcing ribs; 40-coal bunker; 41-inner bin walls; 42-transition bin walls; 43-coal falling space; 50-steel lining board.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In this disclosure, unless otherwise indicated, directional terms such as "inner and outer" are used to refer to the inner and outer sides of the component or structure itself; the terms "first," "second," and the like, herein are used for distinguishing between one element and another and not necessarily for describing a sequential or chronological order. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.

In production, when the coal bucket structure for storing raw coal is constructed as an inverted quadrangular table, the cross section area of the coal dropping space in the coal bin is rectangular, the coal dropping space in the coal bin gradually contracts from top to bottom, namely, the cross section area of the coal dropping space in the coal bin gradually decreases from top to bottom, the extrusion force between coal particles increases, and when the fed coal is crushed and wet raw coal, the raw coal is extremely easy to harden after encountering hot air, especially, at the included angle of the right angle of the adjacent inner bin walls in the coal bin, the coal is more easily extruded, the coal is easily hung at the included angle, and further, the caking is gradually formed, so that the coal blocking phenomenon occurs to the coal feeder, and the power generation capability of a power generating unit in a thermal power plant is further influenced.

In order to solve the above technical problems, as shown in fig. 1 to 3, the present disclosure proposes a coal bucket structure, including a coal bin 40 for holding raw coal, the coal bin 40 includes a plurality of inner bin walls 41 and a transition bin wall 42 connecting two adjacent inner bin walls 41 and for guiding pulverized coal, an included angle between the transition bin wall 42 and the inner bin wall 41 adjacent thereto is an obtuse angle, and the plurality of inner bin walls 41 and the transition bin wall 42 enclose a coal dropping space 43.

In the above embodiment, the transition bin wall 42 and the inner bin wall 41 adjacent thereto form an obtuse included angle, and compared with a right-angle included angle formed by directly connecting two inner bin walls 41 of the coal bin 40, the extrusion force suffered by coal particles is reduced, so that the probability of coal hanging can be reduced, the coal falls more smoothly in the coal falling space 43 defined by the inner bin walls 41 and the transition bin wall 42, the coal feeder can operate normally, and the power generation capability of the generator set is ensured.

In some embodiments, the coal drop spaces 43 are configured in a chamfered-table configuration, with the cross-section of the coal drop spaces 43 within the coal bin 40 gradually decreasing from top to bottom in the vertical direction. The coal bin 40 comprises four inner bin walls 41, the included angle between the planes of any two adjacent inner bin walls 41 is a right angle, a transition bin wall 42 is arranged between any two adjacent inner bin walls 41, the included angle between the transition bin wall 42 and the adjacent inner bin wall 41 is an obtuse angle, so that the included angle of the adjacent bin walls in the coal bin 40 is configured to be an obtuse angle, the extrusion force born by the coal particles at the included angle of any adjacent bin walls in the coal bin 40 is smaller than that when the included angle is configured to be a right angle, the probability of coal hanging at the included angle of any adjacent bin walls in the coal bin 40 can be reduced, and the coal particles in the coal bin 40 fall more smoothly.

In the above embodiment, the coal-falling space 43 is a space for storing and circulating coal formed by enclosing the walls of the coal bunker 40. The coal bucket structure can be improved by the existing coal bucket with the inverted quadrangular frustum structure. For example, the included angle between the adjacent bin walls of the coal bin 40 of the existing inverted quadrangular pyramid-shaped coal bucket is cut and removed, and then the panel capable of being welded to the bin walls is welded to the cut position to form the transition bin walls 42, the transition bin walls 42 are respectively welded to the two inner bin walls 41 adjacent to the transition bin walls, and the included angles between the transition bin walls 42 and the two inner bin walls 41 adjacent to the transition bin walls are all obtuse angles.

For example, the included angle between the adjacent bin walls of the coal bin 40 of the existing inverted quadrangular pyramid-shaped coal bucket is 90 degrees, the included angle between the adjacent bin walls of the coal bin 40 of the existing inverted quadrangular pyramid-shaped coal bucket is cut and removed, then the plates which can be welded on the bin walls are welded on the cut positions to form transition bin walls 42, as shown in fig. 3, the transition bin walls 42 are respectively welded on the two inner bin walls 41 adjacent to the transition bin walls, so that the included angle between the transition bin walls 42 and the two inner bin walls 41 adjacent to the transition bin walls is 135 degrees, and the extrusion force of coal particles on the included angle between the adjacent bin walls of the coal bin 40 is reduced, so that the problem of coal hanging on the adjacent bin walls of the coal bin 40 is relieved.

As shown in fig. 3, the angle α is the angle between the transition bin wall and the adjacent inner bin wall, and the angle α in the figure is 135 °.

Furthermore, the shape of the transition chamber wall 42 may be set according to actual needs, for example, the transition chamber wall 42 may be configured as a triangle.

In production, it has been found that the lining board in the coal bin 40 is usually made of a high molecular polyethylene lining board, the polyethylene lining board has a light weight, but has poor thermal deformation resistance (the thermal deformation temperature is 85 ℃ and the melting point is 136 ℃), but when more coal is stored in the coal bin 40 or fire coal is raised, the lining board is deformed by heating and edge tilting, the bolt hole of the lining board is pressed and fixed by the raw coal, the bolt is pulled out, the lining board falls off, and the defects of jam and stop of a coal feeder, belt scratch or blockage of a coal dropping pipe are caused.

Thus, in some embodiments, the inner wall 41 and the transition wall 42 of the coal bin 40 are each covered with a steel lining plate 50, and the steel lining plate 50 may be made of a wear-resistant steel plate (e.g., NM 500) with a thickness of 4mm to 8mm, and the steel lining plate 50 is welded to the inner wall of the coal bin 40, that is, welded to the inner wall 41 and the transition wall 42 of the coal bin 40. The wear-resistant steel plate has higher wear resistance, and has better plasticity and thermal deformation resistance. The occurrence of deformation, edge tilting and the like of the lining plate of the coal bunker 40 can be reduced, so that the influence on the flow of coal particles caused by the deformation or edge tilting of the lining plate is avoided. In addition, the inner lining plate made of NM500 steel plate has good surface smoothness, which is beneficial to the flow of coal particles.

In the above embodiment, the steel lining plate 50 is formed by splicing a plurality of steel lining single plates, and the steel lining plate 50 is plug welded on the inner wall of the coal bin 40, so that the steel lining plate 50 can be more firmly fixed on the wall of the coal bin, and the defects of jamming and outage of the coal feeder, belt scratch or blockage of the coal dropping tube lamp caused by falling of the lining plate are reduced.

In some embodiments, an 8mm-10mm gap is left between two adjacent steel lining veneers, each steel lining veneer edge can be welded intermittently, each welding is 100mm, and the interval is 100mm to reduce welding stress. Each steel lining veneer is provided with 20-40 plug welding holes according to the size of the steel lining veneer, the size of each plug welding hole can be set according to the area of the steel lining plate 50, and the arrangement of the plug welding holes can also be set according to actual needs.

In some embodiments, as shown in fig. 1-3, a reinforcing rib 30 is provided on the outer wall of the coal bin 40 for increasing the strength of the bin wall of the coal bin 40.

In the above-described embodiment, the reinforcing ribs 30 include the first reinforcing ribs 31 and the second reinforcing ribs 32, and the first reinforcing ribs 31 are provided along the outer wall circumference of the coal bin 40. The number of the first reinforcing ribs 31 may be set to be plural, and the plural first reinforcing ribs 31 are disposed at intervals in the vertical direction at the outer wall of the coal bunker 40 to increase the strength and rigidity of the wall of the coal bunker 40 so that it can carry a larger load. So that the walls of the coal bin 40 are not easily deformed by the impact of the coal particles.

In addition, a second reinforcing rib 32 is connected between two adjacent first reinforcing ribs 31 to increase the stability of the connection of the first reinforcing ribs 31. The second reinforcing ribs 32 may be provided in plural.

When the coal bucket structure is used, the inclination angles of the inner bin walls of the coal bucket relative to the horizontal plane are found to be different, coal is not easy to flow in the inner bin walls with small inclination angles relative to the inner bin walls with large inclination angles, and coal sticking is easy to occur. For example, in production, the inclination angle of the inner bin wall close to the side of the boiler body in the coal bin of the existing coal bucket structure relative to the horizontal plane is 74 degrees, and the inclination angle of the opposite side inner bin wall relative to the horizontal plane is 67 degrees, so that coal is difficult to flow in the opposite side inner bin wall of the boiler relative to the inner bin wall close to the side of the boiler, and caking coal is extremely easy to occur, and therefore, the included angle of the opposite side inner bin wall of the boiler relative to the horizontal plane can be increased according to actual requirements. It should be understood that the included angle between any one of the inner walls of the coal bin 40 and the horizontal plane may be increased according to actual needs, and is not limited herein.

In some embodiments, as shown in fig. 1 and 2, a discharging part 10 is communicated with the lower part of the coal bin 40, and a valve 20 is arranged at the position where the discharging part 10 is communicated with the coal bin 40 for controlling coal falling of the coal bin 40. The valve 20 may be an existing coal gate. When the coal is required to fall, a coal gate can be opened to control the coal particles to fall from the coal bin 40. The coal particles then fall through the discharge section 10 into a coal mill.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims

1. The utility model provides a coal scuttle structure, its characterized in that includes the coal bunker that is used for holding raw coal, the coal bunker includes a plurality of interior storehouse walls and connects two adjacent interior storehouse walls and be used for guiding the transition storehouse wall of buggy, transition storehouse wall and rather than adjacent contained angle between the interior storehouse wall be the obtuse angle, a plurality of interior storehouse wall with transition storehouse wall encloses into the coal space.

2. The coal bucket structure of claim 1, wherein the coal bin comprises four inner bin walls, an included angle between planes of any two adjacent inner bin walls is a right angle, and a transition bin wall is arranged between any two adjacent inner bin walls.

3. The coal bucket structure of claim 1, wherein the cross-sectional area of the coal drop space gradually decreases from top to bottom in the vertical direction.

4. The coal bucket structure of claim 3 wherein the coal drop space is configured as a chamfered land structure.

5. The coal bucket structure of claim 1, wherein steel lining plates are laid on both the inner bin wall and the transition bin wall of the coal bin.

6. The coal bucket structure of claim 5 wherein the steel lining plate is comprised of a plurality of steel lining veneer tiles spliced.

7. The coal bucket structure of claim 5 wherein the steel lining plate is plug welded to the inner wall of the coal bin.

8. The coal bucket structure of claim 5 wherein the steel lining plate has a thickness of 4mm to 8mm.

9. The coal bunker structure of any one of claims 1-8, wherein reinforcing ribs are provided on an outer wall of the bunker.

10. The coal bucket structure of claim 9, wherein the stiffening ribs include first stiffening ribs disposed circumferentially along the coal bin outer wall and second stiffening ribs disposed between two adjacent first stiffening ribs.