An air film enclosed coal yard and dry coal shed interconnection device

Abstract

The present invention discloses an interconnection device between an air-film-enclosed coal yard and a dry coal shed, comprising an air-film-enclosed coal yard, a dry coal shed, a belt conveyor and an underground belt conveyor, wherein the air-film-enclosed coal yard is provided with an air-film-enclosed coal yard coal hopper, a south coal yard coal pile, a north coal yard coal pile, a bucket wheel excavator, an air-film-enclosed coal yard coal unloading grid arranged at the top opening of the air-film-enclosed coal yard coal hopper, and a coal pusher for pushing coal in the south coal yard coal pile onto the air-film-enclosed coal yard coal unloading grid, and the dry coal shed is provided with a dry coal shed coal pile and a dry coal shed coal hopper. The device can realize the interconnection between the air-film-enclosed coal yard and the dry coal shed while ensuring the airtightness and independence of the air-film-enclosed coal yard.

Description

Technical Field

[0001] The invention belongs to the field of environmental protection equipment for coal yards of coal-fired power plants, and relates to an interconnection device between an air film-enclosed coal yard and a dry coal shed. Background Art

[0002] With the implementation of increasingly stringent environmental protection policies in my country, national and local environmental protection departments have successively issued policies requiring coal yards of coal-fired power plants to gradually change to fully enclosed structures. At present, air-film fully enclosed coal yards are also being gradually promoted in the closure of coal yards in thermal power plants due to their light weight, large span, no beams or columns, good sense of space, convenient construction, short construction period, good light transmittance, and low investment.

[0003] Due to the particularity of the coal yard design of different thermal power plants, a considerable proportion of thermal power plants have the coexistence of the original dry coal shed coal yard and the open-air coal yard, and the dry coal shed and the open-air coal yard need to communicate with each other frequently to realize the coal blending function and the flexible deployment of the coal transportation system. When the coal yard needs to be fully enclosed, the original dry coal shed faces the choice of demolition or reuse. Reconstruction after demolition increases investment and causes waste of original materials, while reuse poses new challenges to the air membrane type fully enclosed coal yard. Due to the special requirements of the air membrane fully enclosed coal yard for air tightness, the independence of the open-air coal yard after closure must be ensured, which causes the function of communication between the air membrane fully enclosed coal yard and the dry coal shed coal yard through vehicles and equipment such as coal pushers to be weakened or even lost. Therefore, it is necessary to develop a device that can realize the communication between the air membrane enclosed coal yard and the dry coal shed while ensuring the independence of the air membrane fully enclosed coal yard. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a device for communicating between an air-membrane enclosed coal yard and a dry coal shed, which can achieve communication between the air-membrane enclosed coal yard and the dry coal shed while ensuring the independence of the air-membrane fully enclosed coal yard.

[0005] To achieve the above-mentioned purpose, the air film closed coal yard and dry coal shed interconnection device described in the present invention includes an air film fully closed coal yard, a dry coal shed, a belt conveyor and an underground belt conveyor, wherein the air film coal yard coal hopper, a south coal yard coal pile, a north coal yard coal pile, a bucket wheel machine, an air film coal yard coal unloading grid arranged at the top opening of the air film coal yard coal hopper, and a coal pusher used for pushing coal in the south coal yard coal pile to the air film coal yard coal unloading grid, and the dry coal shed is provided with a dry coal shed coal pile and a dry coal shed coal hopper;

[0006] The bucket wheel excavator is located between the coal pile in the south coal yard and the coal pile in the north coal yard. The coal hopper of the air membrane coal yard is located on the side of the coal pile in the south coal yard in the fully enclosed coal yard of the air membrane. One end of the underground belt conveyor is located at the bottom of the coal hopper of the air membrane coal yard. The other end of the underground belt conveyor passes through the belt conveyor lock valve on the side of the air membrane fully enclosed coal yard and is connected to one end of the belt conveyor. The other end of the belt conveyor is connected to the coal drop port on the side of the dry coal shed. The dry coal shed coal hopper is located directly below the coal drop port. A dry coal shed coal unloading grille is provided at the top opening of the dry coal shed coal hopper, and the dry coal shed coal hopper is located on the side of the dry coal shed coal pile in the dry coal shed. A coal feeding device is provided at the bottom of the dry coal shed coal hopper.

[0007] The dry coal shed is also equipped with a fire-fighting system, a sprinkler dust reduction system, a pollutant monitoring system and a lighting system.

[0008] The air-film fully enclosed coal yard is also equipped with a fire-fighting system, a sprinkler dust reduction system, a pollutant monitoring system and a lighting system.

[0009] The belt conveyor adopts a closed structure.

[0010] The present invention has the following beneficial effects:

[0011] When the air-membrane closed coal yard and dry coal shed interconnection device described in the present invention is working, part of the coal piled in the south coal yard is pushed into the coal hopper of the air-membrane coal yard by the coal pusher, and then conveyed to the belt conveyor through the underground belt conveyor through the belt conveyor locking valve, and then sent to the coal drop port of the dry coal shed by the belt conveyor, so as to unload the coal into the coal hopper of the dry coal shed, so as to realize the interconnection between the air-membrane closed coal yard and the dry coal shed, and at the same time ensure the independence and airtightness of the air-membrane fully enclosed coal yard, which has the greatest advantage of saving investment, and has very good economic and environmental benefits when promoted in thermal power plants with existing dry coal sheds. It can be widely used in the closed transformation of common air-membrane fully enclosed coal yards and original dry coal shed coal yards, and has very good economic and environmental benefits in terms of promotion in thermal power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention.

[0013] Among them, 1 is the air-membrane fully enclosed coal yard, 2 is the dry coal shed, 3 is the coal pile in the south coal yard, 4 is the belt conveyor, 5 is the coal drop port, 6 is the underground belt conveyor, 7 is the belt conveyor lock valve, 8 is the air-membrane coal yard coal unloading grille, 9 is the air-membrane coal yard coal hopper, 10 is the dry coal shed coal unloading grille, 11 is the dry coal shed coal hopper, 12 is the north coal yard coal pile, 13 is the dry coal shed coal pile, and 14 is the bucket wheel excavator. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0015] refer to Figure 1The air film closed coal yard and dry coal shed interconnection device of the present invention comprises an air film fully closed coal yard 1, a dry coal shed 2, a belt conveyor 4 and an underground belt conveyor 6, wherein the air film fully closed coal yard 1 is provided with an air film coal yard coal hopper 9, a south coal yard coal pile 3, a north coal yard coal pile 12, a bucket wheel machine 14, an air film coal yard coal unloading grid 8 arranged at the top opening of the air film coal yard coal hopper 9, and a coal pusher for pushing the coal in the south coal yard coal pile 3 to the air film coal yard coal unloading grid 8, the dry coal shed 2 is provided with a dry coal shed coal pile 13 and a dry coal shed coal hopper 11; the bucket wheel machine 14 is located between the south coal yard coal pile 3 and the north coal yard coal pile 12, and the air film coal yard coal hopper 9 is located at one side of the coal pile 3 in the south coal yard of the air-membrane fully enclosed coal yard 1, one end of the underground belt conveyor 6 is located at the bottom of the coal hopper 9 of the air-membrane coal yard, the other end of the underground belt conveyor 6 passes through the belt conveyor lock valve 7 on the side of the air-membrane fully enclosed coal yard 1 and is connected with one end of the belt conveyor 4, the other end of the belt conveyor 4 is connected with the coal drop port 5 on the side of the dry coal shed 2, the dry coal shed coal hopper 11 is located directly below the coal drop port 5, a dry coal shed coal unloading grille 10 is provided at the top opening of the dry coal shed coal hopper 11, and the dry coal shed coal hopper 11 is located on one side of the dry coal shed coal pile 13 in the dry coal shed 2, and a coal feeding device is provided at the bottom of the dry coal shed coal hopper 11.

[0016] In addition, the air membrane fully enclosed coal yard 1 and the dry coal shed 2 are also equipped with a fire protection system, a sprinkler dust reduction system, a pollutant monitoring system and a lighting system.

[0017] The belt conveyor 4 adopts a closed structure; the underground belt conveyor 6 located outside the air membrane fully enclosed coal yard 1 adopts a fully enclosed structure to avoid dust pollution from coal powder on the conveyor belt.

[0018] The specific working process of the present invention is:

[0019] The coal pile 12 in the north coal yard is loaded with coal through a bucket wheel excavator 14, and the coal pile 13 in the dry coal shed is loaded with coal through a dry coal shed coal unloading grid 10, a dry coal shed coal bucket 11 and a corresponding underground belt system, thereby realizing the coal blending function in the coal transportation system.

[0020] When it is necessary to blend some of the coal in the coal pile 3 in the south coal yard, the coal pusher in the air-film coal yard 1 pushes part of the coal in the coal pile 3 in the south coal yard to the coal unloading grid 8 of the air-film coal yard, and then drops it to the underground belt conveyor 6 through the coal hopper 9 of the air-film coal yard, completing the feeding process in the air-film coal yard 1. The underground belt conveyor 6 transports the coal to the belt conveyor 4 through the belt conveyor lock valve 7, and then sends it to the coal drop port 5 on the side of the dry coal shed 2 through the belt conveyor 4, so as to unload the coal into the coal hopper 11 of the dry coal shed. The coal feeding device at the bottom of the coal hopper 9 of the air-film coal yard transfers the fuel to the coal transportation system of the dry coal shed 2, completing the fuel mutual passage process between the air-film coal yard 1 and the dry coal shed 2.

[0021] Among them, it should be noted that the underground belt conveyor 4 passes through the belt conveyor air lock valve 7 to achieve the crossing of the air-film fully enclosed coal yard 1, so as to complete the air-locking closure of the air-film fully enclosed coal yard 1 and ensure the air tightness of the air-film fully enclosed coal yard 1 and the dry coal shed 2 during interconnection operation.

[0022] The present invention meets environmental protection requirements, can simultaneously meet the requirements for intercommunication between the gas membrane fully enclosed coal yard 1 and the dry coal shed 2 and the air tightness requirements of the gas membrane fully enclosed coal yard 1, is easy to operate, economical and practical, and is suitable for the common gas membrane fully enclosed coal yard 1 and the closed transformation of the original dry coal shed coal yard, and has good economic and environmental benefits in terms of promotion in thermal power plants.

[0023] The above is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. An air film enclosed coal yard and dry coal shed interconnection device, characterized in that: The invention comprises a fully enclosed air film coal yard (1), a dry coal shed (2), a belt conveyor (4) and an underground belt conveyor (6), wherein the fully enclosed air film coal yard (1) is provided with an air film coal yard coal hopper (9), a south coal yard coal pile (3), a north coal yard coal pile (12), a bucket wheel machine (14), an air film coal yard coal unloading grid (8) arranged at the top opening of the air film coal yard coal hopper (9), and a coal pusher for pushing the coal in the south coal yard coal pile (3) onto the air film coal yard coal unloading grid (8), and the dry coal shed (2) is provided with a dry coal shed coal pile (13) and a dry coal shed coal hopper (11); The bucket wheel machine (14) is located between the south coal yard coal pile (3) and the north coal yard coal pile (12), the air film coal yard coal hopper (9) is located on the side of the south coal yard coal pile (3) in the air film fully enclosed coal yard (1), one end of the underground belt conveyor (6) is located at the bottom of the air film coal yard coal hopper (9), and the other end of the underground belt conveyor (6) passes through the belt conveyor lock valve (7) on the side of the air film fully enclosed coal yard (1) and the belt conveyor (4). One end of the belt conveyor (4) is connected to the coal drop port (5) on the side of the dry coal shed (2); the other end of the belt conveyor (4) is connected to the coal drop port (5) on the side of the dry coal shed (2); the dry coal shed coal hopper (11) is located directly below the coal drop port (5); a dry coal shed coal unloading grid (10) is provided at the top opening of the dry coal shed coal hopper (11); the dry coal shed coal hopper (11) is located on one side of the dry coal shed coal pile (13) in the dry coal shed (2); and a coal feeding device is provided at the bottom of the dry coal shed coal hopper (11); The dry coal shed (2) is also equipped with a fire protection system, a sprinkler dust suppression system, a pollutant monitoring system and a lighting system; The air membrane fully enclosed coal yard (1) is also equipped with a fire protection system, a sprinkler dust suppression system, a pollutant monitoring system and a lighting system; The belt conveyor (4) adopts a closed structure; The underground belt conveyor (6) passes through the air membrane fully enclosed coal yard (1) through the belt conveyor air lock valve (7) to complete the air lock type closure, so as to ensure the air tightness of the air membrane fully enclosed coal yard (1) and the dry coal shed (2) when they are in communication; Part of the coal piled in the south coal yard is pushed into the coal hopper of the air membrane coal yard by a coal pusher, and then transported to the belt conveyor through the underground belt conveyor through the belt conveyor lock valve, and then sent to the coal drop port of the dry coal shed through the belt conveyor.

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