Modularized thermal power plant material mixing and feeding device

Abstract

The utility model discloses a modularized thermal power plant mixing and feeding device, which relates to the field of in-furnace feeding of thermal power plants, and comprises a bottom beam, a vertical beam, a top beam and reinforcing ribs, and a space enclosed by the bottom beam, the vertical beam, the top beam and the reinforcing ribs is sealed by a door plate or a cover plate; a feeding platform is arranged in the door plate on one side after the door plate on one side is opened, a feeding opening is formed in the middle of the feeding platform, a feeding pipeline is connected to the bottom of the feeding opening, the other end of the feeding pipeline is connected to a storage bin, and an air pump is arranged at the bottom of the feeding platform and connected with the feeding pipeline to provide power to convey materials to the storage bin. A discharging pipeline is arranged at the bottom of the storage bin and used for feeding the boiler of the thermal power plant. According to the utility model, all installation and debugging can be completed in a workshop, and the device can be directly transported to a thermal power plant with requirements, so that the design and construction cost of a special feeding and mixing device is saved; the construction period is short, and normal operation can be achieved only by connecting corresponding pipelines after transportation to a needed plant; and the modular design is adopted, and adaptive adjustment can be easily carried out corresponding to different materials and boiler conditions.

Description

Technical Field

[0001] The utility model relates to the field of feeding in a furnace of a thermal power plant, in particular to a modularized mixing and feeding device for a thermal power plant. Background Art

[0002] The thermal power plant industry uses coal as the main energy source for power generation. During the combustion process, a large amount of waste gas is emitted. The waste gas contains a large amount of sulfide and nitrate. If the waste gas is directly discharged into the atmosphere, it will cause serious pollution to the environment. The desulfurization and denitrification equipment of thermal power plants is used to treat these waste gases containing a large amount of sulfur and nitrate.

[0003] One of the desulfurization and denitrification processes uses in-furnace desulfurization and denitrification, that is, reactants or catalysts are sprayed into the furnace to promote the conversion or decomposition of sulfides and nitrates. The reactants or catalysts need to be proportioned or mixed and transported through a mixing and feeding device. Existing mixing and feeding devices are generally designed and installed on-site, with high construction costs and long construction periods. They usually occupy a large area and have high maintenance costs.

[0004] Therefore, it is necessary to develop a low-cost modular mixing and feeding device for thermal power plants. Utility Model Content

[0005] The utility model aims to design a modularized material mixing and feeding device for thermal power plants in view of the deficiencies in the prior art, so as to solve the problems of high construction cost and long construction period for designing and installing material mixing and feeding devices for power plants.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a modular thermal power plant mixing and feeding device, which adopts the following technical scheme, including: a plurality of bottom beams arranged horizontally and vertically, a plurality of vertical beams are arranged at the four corners and the middle of the bottom beams, a plurality of top beams arranged horizontally and vertically are arranged on the top of the vertical beams, a plurality of reinforcing ribs are arranged between the vertical beams, and the space enclosed by the bottom beams, the vertical beams, the top beams and the reinforcing ribs is closed by a door panel or a cover panel; after one side of the door panel is opened, a feeding platform is arranged inside, a feeding port is arranged in the middle of the feeding platform, a feeding pipe is connected to the bottom of the feeding port, and the other end of the feeding pipe is connected to a storage silo, an air pump is arranged at the bottom of the feeding platform and connected to the feeding pipe to provide power to transport materials to the storage silo, and a discharge pipe is arranged at the bottom of the storage silo for feeding the thermal power plant boiler.

[0007] Furthermore, the storage silo is arranged at the rear of the second cover plate and is fixed by a bracket. A fan is arranged on one side of the storage silo, and the fan is provided with an air outlet duct connected to the discharge pipe.

[0008] Furthermore, a weighing sensor is arranged at the lower part of the storage silo, a high material level meter is arranged at the top of the storage silo, and a low material level meter is arranged at the bottom of the storage silo; after the other side door panel is opened, a main control machine is arranged inside, and the weighing sensor, high material level meter and low material level meter are electrically connected to the main control machine.

[0009] Furthermore, the discharge pipe is provided with a quantitative feeder, and the quantitative feeder is electrically connected to the main control machine.

[0010] Furthermore, the storage silo is provided with an agitator, including a stirring motor arranged on the upper part of the storage silo, a stirring shaft at the lower part of the stirring motor extends into the interior of the storage silo, a stirring blade is arranged at the bottom of the stirring shaft, and the stirring motor is electrically connected to the main control machine.

[0011] Furthermore, a maintenance passage is provided inside the door panel on one side of the main control machine, and personnel entering the maintenance passage can touch various components of the modular thermal power plant mixing and feeding device.

[0012] Furthermore, a bin vibration device is provided on the side wall of the storage bin, and the bin vibration device is electrically connected to the main control device.

[0013] Furthermore, the bottom beam, vertical beam, and top beam located in the middle are provided with two groups, dividing the feeding device into a disassembled first layer space and a second layer space, and the first layer space and the second layer space are connected by fixing bolts arranged on the bottom beam, vertical beam, and top beam.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model can complete all installation and commissioning in the workshop and can be directly transported to the thermal power plant in need, eliminating the design and construction costs of a dedicated feeding and mixing device;

[0016] 2. The construction period of the utility model is short. After being transported to the required factory, it only needs to be connected to the corresponding pipelines for normal operation;

[0017] 3. The modular design makes it easy to make adaptive adjustments to different materials and boiler conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the internal frame of the utility model;

[0020] Figure 3 This is a schematic diagram of the utility model with the door and part of the first layer cover removed;

[0021] Figure 4 This is a schematic diagram of the structure of the utility model with the door and part of the first and second cover plates removed;

[0022] Figure 5 This is a structural schematic diagram of the storage silo of the utility model;

[0023] Figure 6 A schematic diagram of the split structure of the utility model;

[0024] Figure 7 A schematic diagram of the connection structure between the first-layer space and the second-layer space of the utility model.

[0025] In the figure: 1- bottom beam; 2- vertical beam; 3- top beam; 4- reinforcing rib; 5- door panel; 6- cover plate; 7- loading platform; 8- loading port; 9- loading pipe; 10- storage silo; 11- fan; 12- air outlet; 13- main control machine; 14- high material level meter; 15- low material level meter; 16- weighing sensor; 17- quantitative feeder; 18- stirring motor; 19- stirring shaft; 20- discharge pipe; 21- maintenance passage; 22- silo vibration; 23- fixing bolt; 24- first layer space; 25- second layer space. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0027] In the description of the present invention, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1-Figure 7As shown, the utility model is a modularized mixing and feeding device for a thermal power plant, comprising: a plurality of bottom beams 1 arranged horizontally and vertically, a plurality of vertical beams 2 are arranged at the four corners and the middle of the bottom beam 1, a plurality of top beams 3 arranged horizontally and vertically are arranged on the top of the vertical beams 2, a plurality of reinforcing ribs 4 are arranged between the vertical beams 2, and a space enclosed by the bottom beam 1, the vertical beams 2, the top beam 3 and the reinforcing ribs 4 is closed by a door panel 5 or a cover panel 6.

[0030] correspond Figure 1-Figure 5 As shown in the embodiment, the embodiment adopts a front and back two-layer space design, a loading platform 7 is arranged on one side of the first layer space 24, a main control machine 13 is arranged on the other side, and an inspection channel 21 is reserved in the middle. A storage silo 10 and supporting equipment are arranged on one side of the second layer space 25, and a fan 11 and corresponding pipelines are arranged on the other side. The second layer space 25 can be entered through the inspection channel 21 designed in the first layer space 24. In this embodiment, the inspection channel 21 can reach all equipment, which is convenient for equipment maintenance.

[0031] Specifically, after the door panel 5 on one side of the first-layer space 24 is opened, a loading platform 7 is provided inside, a loading port 8 is provided in the middle of the loading platform 7, a loading pipe 9 is connected to the bottom of the loading port 8, and the other end of the loading pipe 9 is connected to the storage silo 10. An air pump is provided at the bottom of the loading platform 7 and connected to the loading pipe 9 to provide power to transport materials to the storage silo 10. A discharge pipe 20 is provided at the bottom of the storage silo 10 for feeding materials to the boiler of the thermal power plant. After the door panel 5 on the other side of the first-layer space 24 is opened, a main control machine 13 is provided inside.

[0032] A storage silo 10 is arranged on one side of the second space 25 and fixed by a bracket, and a fan 11 is arranged on the other side of the second space 25, and the fan 11 is provided with an air outlet 12 connected to the discharge pipe 20. Specifically, a weighing sensor 16 is arranged at the lower part of the storage silo 10, a high material level meter 14 is arranged at the top of the storage silo 10, and a low material level meter 15 is arranged at the bottom of the storage silo 10; a quantitative feeder 17 is arranged at the discharge pipe 20; a stirrer is arranged at the upper part of the storage silo 10, including a stirring motor 18 arranged at the upper part of the storage silo 10, a stirring shaft 19 at the lower part of the stirring motor 18 extends into the storage silo 10, and a stirring blade is arranged at the bottom of the stirring shaft 19; a silo vibrator 22 is arranged on the side wall of the storage silo 10.

[0033] The weighing sensor 16, the high material level meter 14, the low material level meter 15, the quantitative feeder 17, the stirring motor 18, and the bin vibration 22 are electrically connected to the main control machine 13. Through the control of the main control machine 13, the material conveying rate is checked to keep the material conveying in accordance with the established procedure.

[0034] A person can open the middle door panel 5 to enter the inspection passage 21 , and can touch various components of the modular thermal power plant mixing and feeding device by entering the inspection passage 21 , which is convenient for maintenance and care.

[0035] In the specific power plant renovation, due to the height and width restrictions of the plant door, the entire set of the utility model cannot enter, so the utility model is designed as a split type, such as Figure 6 , 7 As shown, the bottom beam 1, the vertical beam 2, and the top beam 3 located in the middle are provided with two groups, which divide the feeding device into a disassembled first-layer space 24 and a second-layer space 25, and the first-layer space 24 and the second-layer space 25 are connected by fixing bolts 23 provided on the bottom beam 1, the vertical beam 2, and the top beam 3. When the height and width restrictions of the factory door are encountered, the fixing bolts 23 are removed, and the utility model is divided into two parts, and the fixing bolts 23 are installed after entering the factory respectively to connect the first-layer space 24 and the second-layer space 25 together.

[0036] The above embodiments are only preferred embodiments of the present invention. The above descriptions do not limit the protection scope of the present invention in turn. The above descriptions are exemplary and not exhaustive. Therefore, any equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to ordinary technicians in this technical field.

Claims

1. A modular mixing and feeding device for thermal power plants, It is characterized in that include: A plurality of bottom beams (1) are arranged horizontally and vertically, a plurality of vertical beams (2) are arranged at the four corners and the middle of the bottom beam (1), a plurality of top beams (3) are arranged horizontally and vertically on the top of the vertical beam (2), a plurality of reinforcing ribs (4) are arranged between the vertical beams (2), and a space enclosed by the bottom beam (1), the vertical beams (2), the top beam (3) and the reinforcing ribs (4) is closed by a door panel (5) or a cover panel (6); a loading platform (7) is arranged inside after the door panel (5) on one side is opened, a loading port (8) is arranged in the middle of the loading platform (7), a loading pipe (9) is connected to the bottom of the loading port (8), and the other end of the loading pipe (9) is connected to a storage silo (10), an air pump is arranged at the bottom of the loading platform (7) and is connected to the loading pipe (9) to provide power to transport materials to the storage silo (10), and a discharge pipe (20) is arranged at the bottom of the storage silo (10) for feeding materials to the boiler of a thermal power plant.

2. A modularized material mixing and feeding device for a thermal power plant according to claim 1, It is characterized in that The storage silo (10) is arranged at the rear of the second cover plate (6) and is fixed by a bracket. A fan (11) is arranged on one side of the storage silo (10), and the fan (11) is provided with an air outlet duct (12) connected to the discharge pipe (20).

3. A modularized mixing and feeding device for a thermal power plant according to claim 2, It is characterized in that A weighing sensor (16) is arranged at the bottom of the storage silo (10), a high material level meter (14) is arranged at the top of the storage silo (10), and a low material level meter (15) is arranged at the bottom of the storage silo (10); after the other side door panel (5) is opened, a main control machine (13) is arranged inside, and the weighing sensor (16), the high material level meter (14), and the low material level meter (15) are electrically connected to the main control machine (13).

4. A modularized material mixing and feeding device for a thermal power plant according to claim 3, It is characterized in that The discharge pipe (20) is provided with a quantitative feeder (17), and the quantitative feeder (17) is electrically connected to the main control machine (13).

5. A modularized material mixing and feeding device for a thermal power plant according to claim 3, It is characterized in that The storage silo (10) is provided with an agitator, including a stirring motor (18) arranged on the upper part of the storage silo (10), a stirring shaft (19) at the lower part of the stirring motor (18) extending into the interior of the storage silo (10), a stirring blade being arranged at the bottom of the stirring shaft (19), and the stirring motor (18) being electrically connected to the main control machine (13).

6. A modularized material mixing and feeding device for a thermal power plant according to claim 3, It is characterized in that A maintenance passage (21) is provided inside the door panel (5) on one side of the main control machine (13), and personnel can access various components of the modular thermal power plant mixing and feeding device by entering the maintenance passage (21).

7. A modularized material mixing and feeding device for a thermal power plant according to claim 3, It is characterized in that The side wall of the storage silo (10) is provided with a silo vibrator (22), and the silo vibrator (22) is electrically connected to the main control machine (13).

8. A modularized material mixing and feeding device for a thermal power plant according to claim 1, It is characterized in that The bottom beam (1), the vertical beam (2), and the top beam (3) located in the middle are provided in two groups, dividing the feeding device into a disassembled first layer space (24) and a second layer space (25), and the first layer space (24) and the second layer space (25) are connected by fixing bolts (23) arranged on the bottom beam (1), the vertical beam (2), and the top beam (3).

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