A coal distribution system for interconnection between air film coal yard and steel grid coal yard

Abstract

This invention discloses an interconnected coal distribution system for an air-supported membrane coal yard and a steel grid coal yard, comprising an air-supported membrane coal yard, a steel grid coal yard, and a coal conveying system for connecting and distributing coal between the two. The air-supported membrane coal yard is connected by a belt conveyor system, while the steel grid coal yard is connected by an underground conveyor belt and a corresponding underground conveyor belt feeding system. Several air-locked truck coal transport channels are provided on the sides of both the air-supported membrane coal yard and the steel grid coal yard. The air-supported membrane coal yard and the steel grid coal yard are interconnected via air-locked coal pusher channels. The coal conveying system is located between the air-supported membrane coal yard and the steel grid coal yard. This system enables interconnected coal distribution between the two coal yards while ensuring the independence and airtightness of the air-supported membrane coal yard.

Description

Technical Field

[0001] The invention belongs to the field of environmental protection facilities for coal yards of coal-fired power plants, and relates to an interconnected coal distribution system for an air film coal yard and a steel grid coal yard. Background Art

[0002] Air-film buildings are gradually emerging in the domestic and international construction industries due to their advantages such as light weight, good light transmittance, strong sense of space, simple and convenient construction, short period of time, and low investment. As the environmental protection departments have higher and higher requirements for the closure of coal yards in thermal power plants, the original wind and dust suppression nets can no longer meet the environmental protection requirements. Against the backdrop of large investments in steel grid coal yards, long construction periods, and the risk of unorganized emissions, air-film closed coal yards have gradually been recognized by professionals for their advantages of complete closure, reasonable investment, and short construction period.

[0003] At present, the coal yard of thermal power units is fully enclosed mainly by renovation projects. Many thermal power plants were originally designed with some dry coal sheds or steel grid closed coal yards. If the steel grid coal yard is built, the investment is large, which will cause economic burden to thermal power enterprises. If the original steel grid is dismantled and the air membrane closed coal yard is rebuilt, the investment will inevitably increase, resulting in great waste. If the original steel grid coal yard is retained and the air membrane coal yard is expanded next to it, the intercommunication and coal distribution problems between the air membrane coal yard and the steel grid coal yard cannot be solved, and it is difficult to realize the function of blending and coal distribution and the flexible allocation of the coal transportation system, which poses new challenges to the air membrane type fully enclosed coal yard. The air membrane closed coal yard has very high requirements for air tightness, which weakens or even loses the function of intercommunication between it and the steel grid coal yard through mechanical equipment and other means. Therefore, it is necessary to design a system that can realize the independence and air tightness of the air membrane fully enclosed coal yard while realizing the intercommunication and coal distribution requirements of the air membrane coal yard and the steel grid coal yard of the coal-fired power plant. 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 coal distribution system for the air-film coal yard and the steel grid coal yard. The system can realize the coal distribution between the air-film coal yard and the steel grid coal yard while ensuring the independence and airtightness of the air-film coal yard.

[0005] To achieve the above-mentioned purpose, the air-film coal yard and steel grid coal yard interconnected coal distribution system described in the present invention includes an air-film coal yard, a steel grid coal yard and a coal transportation system for realizing the connection and coal distribution between the air-film coal yard and the steel grid coal yard, wherein the air-film coal yard is penetrated by an air-film coal yard belt coal transportation system, the steel grid coal yard is penetrated by a steel grid coal yard underground coal transportation belt and a steel grid coal yard underground coal transportation belt coal feeding system coordinated with the steel grid coal yard underground coal transportation belt, a number of air-locked automobile coal transportation channels are arranged on the side of the steel grid coal yard, a number of steel grid coal yard automobile coal transportation channels are arranged on the side of the steel grid coal yard, the air-film coal yard and the steel grid coal yard are interconnected through an air-locked coal pusher channel, and the coal transportation system is located between the air-film coal yard and the steel grid coal yard.

[0006] The coal transportation system includes a semi-underground coal transportation corridor, a coal dropping grate, a steel coal hopper, a coal feeder and a coal conveyor belt, wherein the semi-underground coal transportation corridor is arranged in the air membrane coal yard, the coal dropping grate is arranged at the top opening position of the semi-underground coal transportation corridor, the steel coal hopper is located in the semi-underground coal transportation corridor, and the top opening of the steel coal hopper is opposite to the coal dropping grate, and a coal feeder is arranged at the bottom opening of the steel coal hopper, one end of the coal conveyor belt is located below the coal feeder, and the other end of the coal conveyor belt is opposite to the coal dropping port of the steel grid coal yard.

[0007] An electric air-locking plug door is installed at the bottom of the steel coal hopper, an air-locking coal pusher channel is equipped with an air-locking coal pusher channel air-locking device, an air-locking coal truck channel is equipped with an air-locking coal truck channel air-locking device, and an air-film coal yard belt coal conveying system is equipped with an air-film coal yard belt coal conveying system air-locking device.

[0008] The air-locked coal transportation channels for automobiles are arranged on the left and right sides of the air-film coal yard.

[0009] The automobile coal transportation channel of each steel grid coal yard is set on the left and right sides of the steel grid coal yard.

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

[0011] The intercommunication coal distribution system between the air membrane coal yard and the steel grid coal yard described in the present invention is interconnected during operation through the coal conveying system, the air membrane coal yard belt coal conveying system, the steel grid coal yard underground coal conveying belt, the air-locked automobile coal transportation channel, the steel grid coal yard automobile coal transportation channel and the air-locked coal pusher channel, so as to realize the intercommunication coal distribution between the air membrane coal yard and the steel grid coal yard. In addition, an electric air-locked plug-in door is provided at the bottom of the steel coal hopper, an air-locked coal pusher channel is provided with an air-locked coal pusher channel air-locking device, and an air-locked automobile coal transportation channel is provided with an air-locked automobile The air locking device of the coal transportation channel and the air film coal yard belt coal conveyor system are equipped with an air film coal yard belt coal conveyor system air locking device to ensure the independence and air tightness of the air film coal yard. It has a simple structure and is easy to operate. It has the biggest advantage of the air film coal yard in saving investment. At the same time, it has the convenience of mutual coal blending, which meets the stringent requirements of thermal power plants for various coal blending and combustion schemes. It can be widely used in the common air film fully enclosed coal yard and the closed transformation of the original steel grid coal yard. It has good environmental benefits and takes into account economy in terms of promotion in thermal power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention;

[0013] Figure 2 It is a schematic diagram of the structure of the coal transportation system 3 in the present invention.

[0014] Among them, 1 is the air membrane coal yard, 2 is the steel grid coal yard, 3 is the coal transportation system, 4 is the air-locked coal pusher channel, 5 is the air-locked automobile coal transportation channel, 6 is the air membrane coal yard belt coal transportation system, 7 is the air-locking device of the air membrane coal yard belt coal transportation system, 8 is the steel grid coal yard underground coal conveyor belt, 9 is the steel grid coal yard underground coal conveyor belt coal feeding system, 10 is the steel grid coal yard automobile coal transportation channel, 11 is the semi-underground coal transportation corridor, 12 is the coal dropping grate, 13 is the steel coal hopper, 14 is the coal feeder, 15 is the coal conveyor belt, 16 is the electric air-locked plug-in door, and 17 is the coal dropping port. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0016] refer to Figure 1 The air-film coal yard and steel grid coal yard interconnected coal distribution system of the present invention comprises an air-film coal yard 1, a steel grid coal yard 2 and a coal transportation system 3 for realizing the connection and coal distribution between the air-film coal yard 1 and the steel grid coal yard 2, wherein the air-film coal yard 1 is penetrated by an air-film coal yard belt coal transportation system 6, the steel grid coal yard 2 is penetrated by a steel grid coal yard underground coal transportation belt 8 and a steel grid coal yard underground coal transportation belt coal feeding system 9 matched with the steel grid coal yard underground coal transportation belt 8, a plurality of air-locked automobile coal transportation channels 5 are arranged on the side of the air-film coal yard 1, a plurality of steel grid coal yard automobile coal transportation channels 10 are arranged on the side of the steel grid coal yard 2, the air-film coal yard 1 and the steel grid coal yard 2 are interconnected through an air-locked coal pusher channel 4, and the coal transportation system 3 is located between the air-film coal yard 1 and the steel grid coal yard 2.

[0017] refer to Figure 2 The coal conveying system 3 includes a semi-underground coal conveying corridor 11, a coal dropping grate 12, a steel coal hopper 13, a coal feeder 14 and a coal conveying belt 15, wherein the semi-underground coal conveying corridor 11 is arranged in the air membrane coal yard 1, the coal dropping grate 12 is arranged at the top opening position of the semi-underground coal conveying corridor 11, the steel coal hopper 13 is located in the semi-underground coal conveying corridor 11, and the top opening of the steel coal hopper 13 is opposite to the coal dropping grate 12, and the coal feeder 14 is arranged at the bottom opening of the steel coal hopper 13, one end of the coal conveying belt 15 is located below the coal feeder 14, and the other end of the coal conveying belt 15 is opposite to the coal dropping port 17 of the steel grid coal yard 2.

[0018] It should be noted that an electric air-locking plug-in door 16 is provided at the bottom of the steel coal hopper 13, an air-locking coal pusher channel air-locking device is provided in the air-locking coal pusher channel 4, an air-locking coal transportation channel air-locking device is provided in the air-locking coal transportation channel 5, and an air-film coal yard belt coal conveying system air-locking device is provided in the air-film coal yard belt coal conveying system 6; each air-locking coal transportation channel 5 is provided on the left and right sides of the air-film coal yard 1; each steel grid coal yard coal transportation channel 10 is provided on the left and right sides of the steel grid coal yard 2.

[0019] When the present invention is in operation, the interconnection and coal blending and combustion of two coal yards with different structures are realized through four methods.

[0020] 1. The belt coal feeding system mainly uses the air film coal yard belt coal conveying system 6 and the steel grid coal yard underground coal conveying belt. The two types of coal from different coal yards are transported to the coal feeder coal bunker through two belts for mixing, thereby realizing the coal blending and combustion function.

[0021] 2. The interconnected coal blending system, which is mainly based on the coal conveying system 3, delivers the coal from the air membrane coal yard 1 to the top of the underground coal conveyor belt coal feeding system 9 of the steel grid coal yard through the coal dropping grate 12, the steel coal hopper 13, the electric air lock gate 16, the coal feeder 14, the coal conveyor belt 15 and the coal dropping port 17. The coal is mixed with the coal from the steel grid coal yard 2 in proportion and then delivered to the underground coal conveyor belt coal feeding system 9 of the steel grid coal yard, thereby realizing the coal blending function of the specific coal from the air membrane coal yard 1 and the coal from the steel grid coal yard 2.

[0022] 3. The coal-burning and equipment intercommunication system based on the air-locking coal-pushing machine channel 4 realizes the free intercommunication of specific fuels of different coal yards and coal-pushing equipment between the air-film coal yard 1 and the steel grid coal yard 2. The air-locking coal-pushing machine channel 4 consists of two interlocking closed doors with air-locking function, and the equipment and fuel can be intercommunication without affecting the airtightness of the air-film coal yard 1.

[0023] 4. A truck coal transportation system consisting of multiple air-locked truck coal transportation channels 5 and multiple steel grid coal yard truck coal transportation channels 10. The air-locked truck coal transportation channels 5 consist of two interlocking closed doors. Trucks shuttle between the air-film coal yard 1 and the steel grid coal yard 2 to achieve proportional mixing of specific fuels without affecting the airtightness of the air-film coal yard 1.

[0024] The present invention has the greatest advantage of saving investment in the air-film coal yard 1, meets the air-tightness requirement of the air-film coal yard 1, has the convenience of mutual coal blending, meets the stringent requirements of thermal power plants for various coal blending and combustion schemes, is flexible in operation, and is very practical. It can be widely used in common air-film fully enclosed coal yards and the enclosed transformation of the original steel grid coal yard 2, and has good environmental benefits and takes into account economy in terms of promotion in thermal power plants.

[0025] 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. A coal distribution system for intercommunication between an air film coal yard and a steel grid coal yard, characterized in that: The invention comprises an air film coal yard (1), a steel grid coal yard (2) and a coal transportation system (3) for realizing the connection and coal distribution between the air film coal yard (1) and the steel grid coal yard (2), wherein the air film coal yard (1) is penetrated by an air film coal yard belt coal transportation system (6), the steel grid coal yard (2) is penetrated by an underground steel grid coal yard coal transportation belt (8) and an underground steel grid coal yard belt coal feeding system (9) matched with the underground steel grid coal yard coal transportation belt (8), a plurality of air-locked automobile coal transportation channels (5) are arranged on the side of the air film coal yard (1), a plurality of steel grid coal yard automobile coal transportation channels (10) are arranged on the side of the steel grid coal yard (2), the air film coal yard (1) and the steel grid coal yard (2) are interconnected through an air-locked coal pusher channel (4), and the coal transportation system (3) is located between the air film coal yard (1) and the steel grid coal yard (2); The coal conveying system (3) comprises a semi-underground coal conveying corridor (11), a coal dropping grate (12), a steel coal hopper (13), an electric air lock gate (16), a coal feeder (14) and a coal conveying belt (15), wherein the semi-underground coal conveying corridor (11) is arranged in the air membrane coal yard (1), the coal dropping grate (12) is arranged at the top opening position of the semi-underground coal conveying corridor (11), the steel coal hopper (13) is located in the semi-underground coal conveying corridor (11), and the top opening of the steel coal hopper (13) is directly opposite to the coal dropping grate (12), the bottom opening of the steel coal hopper (13) is provided with a coal feeder (14), one end of the coal conveying belt (15) is located below the coal feeder (14), and the other end of the coal conveying belt (15) is directly opposite to the coal dropping port (17) of the steel grid coal yard (2); An electric air-locking plug-in door (16) is arranged at the bottom of the steel coal hopper (13); an air-locking coal pusher channel air-locking device is arranged in the air-locking coal pusher channel (4); an air-locking coal truck channel air-locking device is arranged in the air-locking coal truck channel (5); and an air-film coal yard belt coal conveying system (6) is provided with an air-film coal yard belt coal conveying system air-locking device; Each air-locked automobile coal transport channel (5) is arranged on the left and right sides of the air-film coal yard (1).

2. The intercommunication coal distribution system between the air film coal yard and the steel grid coal yard according to claim 1 is characterized in that: Each steel grid coal yard automobile coal transportation channel (10) is arranged on the left and right sides of the steel grid coal yard (2).

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