Coal feeding device and coal feeding system
By setting the first pipeline and the material separation assembly in the coal material supply device, the mixing of refined coal and rough coal is achieved, solving the problem of difficult connection between coal buckets in the prior art, and improving combustion efficiency.
Patent Information
- Application Number
- CN202323342436.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-04
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-04
AI Technical Summary
When connecting the existing coal feeding device with the coal bucket of refined coal and rough coal, it is difficult to construct, which affects the combustion effect and efficiency of thermal power generation equipment.
A coal material supply device is designed, and the refined coal and the The mixing of rough coal reduces the difficulty of construction.
By increasing the construction space, the device simplifies the connection process between coal buckets, improves the mixing effect of refined coal and rough coal, reduces construction difficulty, and improves combustion efficiency.
Smart Images
Figure CN222210370U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of coal supply devices, and in particular, to a coal supply device and a coal supply system. Background Art
[0002] At present, in the method of using coal for power generation, the coal used includes rough coal and clean coal. Rough coal has poor combustion effect but low price, while clean coal has good combustion effect but high price. Therefore, thermal power plants often use both types of coal. Clean coal and rough coal are stored in different coal hoppers. In some cases, clean coal and rough coal need to be mixed and sent into the combustion chamber of thermal power generation equipment for combustion.
[0003] Therefore, there is a need to connect the coal hopper containing rough coal with the coal hopper containing clean coal so that the rough coal and the clean coal can be mixed. However, due to the space constraints of the production site, it is difficult to connect the coal hopper containing clean coal with the coal hopper containing clean coal on site. Utility Model Content
[0004] The purpose of the present application is to provide a coal supply device to reduce the difficulty of connecting two coal hoppers.
[0005] The embodiment of the present application is implemented as follows:
[0006] In the first aspect, an embodiment of the present application provides a coal supply device, including a first coal hopper and a second coal hopper, a first coal feeder and a first coal mill are arranged below the first coal hopper, the first coal feeder is used to feed the material in the first coal hopper into the coal mill, and the first coal feeder and the first coal mill are connected by a first pipeline.
[0007] A material distribution assembly is connected between the second coal hopper and the first pipeline to deliver the material in the second coal hopper into the first pipeline.
[0008] In the above technical solution provided by the present application, the first coal feeder and the first coal mill are connected through the first pipeline, which increases the distance between the first coal feeder and the first coal mill. The second coal hopper is connected to the first pipeline through the material dividing assembly, so that the material in the first coal hopper can enter the first pipeline, and the materials in the first coal hopper and the second coal hopper are mixed. In the case where the first coal hopper is filled with clean coal and the second coal hopper is filled with rough coal, the clean coal and the rough coal can be fed into the first coal mill together.
[0009] That is, the coal supply device provided in the present application increases the construction space by providing the first pipeline, and can more conveniently connect the first coal hopper and the second coal hopper through the material dividing assembly, thereby reducing the construction difficulty.
[0010] In combination with the first aspect, in some optional embodiments, the material distribution assembly includes a distribution bin, a second coal feeder and a second pipeline connected in sequence; one end of the distribution bin is connected to the second coal hopper, and the other end is connected to the second coal feeder; the end of the second pipeline away from the second coal feeder is connected to the first pipeline.
[0011] In the above embodiment, the distribution bin in the distribution assembly is connected to the second coal hopper, and can obtain materials from the second coal hopper. The two ends of the second coal feeder are respectively connected to the distribution bin and the second pipeline, so that the second coal feeder can deliver the materials in the distribution bin into the second pipeline, and then the materials enter the first pipeline through the second pipeline.
[0012] In combination with the first aspect, in some optional embodiments, a first gate is provided on the first pipeline, the second pipeline is connected above or below the first gate, and the first gate is used to cut off the interior of the first pipeline.
[0013] The gate door can be provided to facilitate cutting off the first pipeline so as to control the material supply.
[0014] In combination with the first aspect, in some optional embodiments, the diameter of the second pipe is in the range of 400 to 1000 mm.
[0015] In the above technical solution, the diameter of the second pipe is controlled within the range of 400 to 1000 mm, which can allow the material to pass smoothly on the one hand, and can reduce the occupied space as much as possible on the other hand, thereby facilitating the connection of the second pipe with the first pipe.
[0016] In combination with the first aspect, in some optional embodiments, the second pipeline is connected to an end of the first pipeline close to the first coal mill.
[0017] In the above technical solution, by connecting the second pipeline to one end of the first pipeline close to the first coal mill, the impact generated when the material in the second pipeline enters the first coal mill can be effectively reduced.
[0018] In combination with the first aspect, in some optional embodiments, the second coal feeder is arranged horizontally.
[0019] In the above technical solution, the second coal feeder is arranged horizontally, which can effectively prevent the material from moving under the action of gravity when in the second coal feeder, thereby enabling a preset amount of material in the second coal hopper to be more accurately delivered into the first pipeline.
[0020] In combination with the first aspect, in some optional embodiments, the sub-bin is a hyperbolic coal hopper.
[0021] In combination with the first aspect, in some optional implementation schemes, the sub-bin is equipped with an anti-blocking mechanism.
[0022] In combination with the first aspect, in some optional embodiments, the first pipeline includes a vertical section arranged vertically, and the diameter of the vertical section is in the range of 400 to 1000 mm and the height is in the range of 200 to 500 mm.
[0023] In the above technical solution, the vertical section is arranged vertically, and the height is in the range of 200 to 500 mm and the diameter is in the range of 400 to 1000 mm, so that there is enough space between the first coal feeder and the first coal mill for the installation of the material distribution assembly to achieve mixing of the materials in the first coal hopper and the second coal hopper.
[0024] In a second aspect, an embodiment of the present application provides a coal supply system, comprising the coal supply device provided in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0026] Figure 1 A coal supply device provided in an embodiment of the present application;
[0027] Figure 2 for Figure 1 Axonometric view of the coal supply device in;
[0028] Figure 3 A schematic diagram of the internal structure of a second coal feeder provided in an embodiment of the present application;
[0029] Figure 4 Another coal supply device provided in an embodiment of the present application.
[0030] Icons: 110-first coal hopper; 120-first coal feeder; 130-first pipeline; 140-first coal mill; 210-second coal hopper; 220-third coal feeder; 230-second coal mill; 300-material distribution assembly; 310-material distribution bin; 320-second coal feeder; 321-driving roller; 322-driven roller; 323-belt; 324-support roller; 330-second pipeline; 410-first gate door; 420-second gate door; 430-third gate door. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0034] In the description of this application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0035] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0036] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0037] The inventors of the present application have discovered that in a thermal power plant, due to the unreasonable structure of the existing coal supply device, when it is necessary to connect the coal hopper containing clean coal with the coal hopper containing rough coal, due to the structural limitations of the supply device, there is a construction inconvenience and it is not easy to connect the coal hoppers.
[0038] Based on this, the present application provides a coal supply device, such as Figure 1 and Figure 2 As shown, the first coal hopper 110 and the second coal hopper 210 are both used to hold materials. In actual use, the first coal hopper 110 can hold rough coal, and the second coal hopper 210 can hold clean coal. Of course, they can also be used to hold other materials. The first coal hopper 110 and the second coal hopper 210 are also connected through a material dividing assembly 300, so that the clean coal provided by the second coal hopper 210 can be mixed with the rough coal provided by the first coal hopper 110.
[0039] like Figure 1 and Figure 2 As shown, a first coal feeder 120 is provided below the first coal hopper 110, and the first coal hopper 110 is connected to a first coal mill 140 through a first pipeline 130. The rough coal in the first coal hopper 110 passes through the first coal feeder 120 and the first pipeline 130 in sequence and enters the first coal mill 140, and is ground into powder in the first coal mill 140 for combustion. In the coal supply device provided in the present application, one end of the material distribution component 300 is connected to the second coal hopper 210, and the other end is connected to the first pipeline 130, that is, the clean coal in the second coal hopper 210 passes through the material distribution component 300 and enters the first pipeline 130, and is mixed with the clean coal provided by the second coal hopper 210 in the first pipeline 130.
[0040] In the process of thermal power generation, there is a need to mix clean coal with rough coal, so as to achieve the mixing of clean coal and rough coal and grind them into powder and send them into the combustion chamber to increase the combustion effect. It is not difficult for technicians in this field to understand that the method of mixing block rough coal with block clean coal and then grinding them into powder wastes less materials. Therefore, the first coal hopper 110 and the second coal hopper 210 are mostly filled with block coal. One end of the material distribution component 300 is connected to the second coal hopper 210, and the other end can be connected to the first coal hopper 110 or the first coal feeder 120. The first coal hopper 110 and the second coal hopper 210 are usually full of coal, and it is difficult to modify the first coal hopper 110 after the first coal hopper 110 has been used for a period of time; the internal structure of the first coal feeder 120 is complicated. If the material distribution component 300 is directly connected to the first coal feeder 120, the internal structure of the first coal feeder 120 may be damaged.
[0041] Therefore, the present application provides a position for connecting the material distributor assembly 300 by setting the first pipeline 130 between the first coal feeder 120 and the first coal mill 140, and increases the distance between the first coal feeder 120 and the first coal mill 140, so that the space for installing the material distributor is larger, which facilitates the installation of the material distributor assembly 300, thereby reducing the difficulty of connecting the first coal hopper 110 with the second coal hopper 210. Even before the material distributor assembly 300 in the coal material supply device provided by the present application is installed, when the first coal hopper 110, the second coal hopper 210, the first coal feeder 120, the first coal mill 140 and other equipment have been put into use, there is still a certain space to install the material distributor assembly 300, and the difficulty of connecting the first coal hopper 110 with the second coal hopper 210 using the material distributor assembly 300 is relatively low.
[0042] In the present application, there is no limitation on the specific shape and arrangement of the first pipeline 130, as long as the material in the first coal feeder 120 can reach the first coal feeder 120 after passing through the first pipeline 130. In some embodiments, such as Figure 1 and Figure 2 As shown, the first pipeline 130 can be a straight pipe; in other embodiments, the first pipeline 130 can also be a curved pipe or other special-shaped structures. Further, the first pipeline 130 can be a circular tubular structure or a square tubular structure; the cross-sectional area of the first pipeline 130 can be constant or variable, for example, the end of the first pipeline 130 connected to the first coal feeder 120 is a bell mouth.
[0043] In the present application, there is no limitation on the configuration of the first pipeline 130. In some embodiments, for example, Figure 1 and Figure 2 As shown, the first pipeline 130 is vertically arranged, the upper end of the first pipeline 130 is connected to the first coal feeder 120, and the lower end is connected to the first coal mill 140. In other embodiments, the first pipeline 130 may also be arranged in other ways, such as horizontal arrangement, as long as the first pipeline 130 can provide a passage for the material to enter the first coal mill 140 from the first coal feeder 120.
[0044] In some embodiments, Figure 1 and Figure 2 As shown, the first pipeline 130 includes a vertically arranged, tubular vertical section, and the vertical section allows the location of the first pipeline 130 to have sufficient space for installing the material distribution assembly 300.
[0045] In the present application, the material dividing assembly 300 is used to deliver the material, namely coal, in the second coal hopper 210 into the first pipeline 130, so that the material provided by the second coal hopper 210 can be mixed with the material in the first coal hopper 110. The present application has no limitation on the specific structure of the material dividing assembly 300.
[0046] In some embodiments, the material distribution assembly 300 includes a material distribution bin 310, a second coal feeder 320, and a second pipeline 330 connected in sequence, one end of the material distribution bin 310 is connected to the second coal hopper 210, and the other end is connected to the second coal feeder 320, and one end of the second pipeline 330 is connected to the second coal feeder 320, and the other end is connected to the first coal hopper 110. The material in the second coal hopper 210 can reach the second coal feeder 320 through the material distribution bin 310, and then be sent to the second pipeline 330 under the action of the second coal feeder 320, and enter the first pipeline 130 after passing through the second pipeline 330, so that the material in the second coal hopper 210 is mixed with the material in the first coal hopper 110.
[0047] In the above embodiments, there is no restriction on the arrangement of the sub-bin 310. Preferably, the sub-bin 310 is arranged vertically so that the material in the second coal hopper 210 can enter the sub-bin 310 under the action of gravity. Of course, in other embodiments, the sub-bin 310 can also be arranged at a certain angle to the vertical direction, which can also enable the material in the second coal hopper 210 to enter the sub-bin 310 under the action of gravity. It should not be difficult for those skilled in the art to understand that the above two arrangements of the sub-bin 310 can both enable the material in the second coal hopper 210 to enter the sub-bin 310 by gravity. Therefore, the upper end of the sub-bin 310 is connected to the second coal hopper 210, and the lower end is connected to the second coal feeder 320.
[0048] In addition, in some embodiments, the two ends of the sub-bin 310 can be arranged horizontally or even the upper end can be connected to the second coal feeder 320 and the lower end can be connected to the second coal hopper 210. In this embodiment, the material in the second coal hopper 210 cannot enter the sub-bin 310 under the action of gravity, and other devices are required to assist the material in the second coal hopper 210 to enter the sub-bin 310. It is not difficult for those skilled in the art to use the conveying device in the prior art to realize the delivery of the material in the second coal hopper 210 into the sub-bin 310. In this embodiment, since an auxiliary device is used to deliver the material in the second coal hopper 210 into the sub-bin 310, the weight of the material delivered into the sub-bin 310 can be controlled in this process.
[0049] In the present application, there is no limitation on the outer shape of the sub-bin 310. In some embodiments, the sub-bin 310 may be a rotating body. Furthermore, the sub-bin 310 may be a tubular structure with a fixed diameter. Preferably, the sub-bin 310 is a rotating body and the end connected to the second coal hopper 210 is a bell mouth. In the embodiment where the sub-bin 310 is vertically arranged, since the end of the sub-bin 310 connected to the second coal hopper 210 is a bell mouth, it is convenient for the material in the second coal hopper 210 to enter the sub-bin 310. Furthermore, the sub-bin 310 is a hyperbolic coal hopper, that is, Figure 1 The left and right contours of the middle bin 310 include a hyperbola. Of course, in some other embodiments, the bin 310 may also be a square tubular structure or other shapes. Further, in some embodiments, an anti-blocking mechanism is also provided in the bin 310, and the anti-blocking mechanism may include a rotating shaft with blades, and the material in the bin 310 is moved by the rotation of the rotating shaft, thereby preventing the material from being blocked in the bin 310.
[0050] In the present application, there is no limitation on the specific structure of the second coal feeder 320, as long as it can deliver the materials in the sub-bin 310 to the second pipeline 330. In some embodiments, the second coal feeder 320 includes a shell located outside and a conveying mechanism located inside the shell, wherein the shell is used to separate the internal environment from the external environment to avoid contamination of the external environment, and the conveying mechanism is used to deliver the materials in the sub-bin 310 to the second pipeline 330. Furthermore, the conveying mechanism can be a belt drive to transport the materials, for example, Figure 3 As shown, the conveying mechanism includes a driving roller 321, a driven roller 322 and a belt 323. It should be easy to understand for those skilled in the art that the driving roller 321 and the driven roller 322 are driven by the belt 323, and the belt 323 plays the role of conveying the material. In some preferred embodiments, a support roller 324 is also provided between the driving roller 321 and the driven roller 322, and the support roller 324 contacts the surface of the belt 323 from the inner side of the belt 323 to improve the situation where the belt 323 sags under the action of the material and causes a large deformation, thereby reducing the conveying effect of the material. In other embodiments of the present application, the conveying mechanism may also adopt other structures, as long as the material in the sub-bin 310 can be delivered to the second pipeline 330.
[0051] Furthermore, in an embodiment where the conveying mechanism adopts belt drive, the discharge port at the lower end of the sub-bin 310 is located above the belt 323 so that the material in the sub-bin 310 can fall onto the belt 323 under the action of gravity.
[0052] There is no limitation on the arrangement of the second coal feeder 320 in the present application. In some embodiments, the second coal feeder 320 can be arranged horizontally so that materials such as coal can be stably placed on the belt 323 to facilitate the transportation of materials.
[0053] The present application does not limit the external shape of the second pipeline 330, as long as it can allow the material in the second coal feeder 320 to enter the first pipeline 130. In some embodiments, the second pipeline 330 can be a straight pipe; in other embodiments, such as Figure 1 and Figure 2 As shown, the second pipe 330 may also be a curved pipe, and one end of the second pipe 330 connected to the first pipe 130 is inclined toward the first pipe 130; in other embodiments, the second pipe 330 may also be other special-shaped structures. Further, the second pipe 330 may be a circular tubular structure or a square tubular structure; the cross-sectional area of the second pipe 330 may be constant or variable, for example, the end of the second pipe 330 connected to the second coal feeder 320 is a bell mouth.
[0054] In some embodiments of the present application, a first gate door 410 is further provided on the first pipeline 130, and the first gate door 410 is used to cut off the first pipeline 130, so that the coal material in the first coal feeder 120 cannot pass through the first gate door 410 and enter the first coal mill 140. Specifically, a slidable plate-like structure is provided in the first gate door 410, and the plate-like structure can slide into the inside of the first pipeline 130 to cut off the first pipeline 130. It should be easy to understand for those skilled in the art that when the gate door cuts off the first pipeline 130, the outer contour of the plate-like structure surrounds the inner tube cavity of the first pipeline 130 on the inside. There is no limitation on the specific structure of the first gate door 410 in the present application, and those skilled in the art may also use other structural forms of the first gate door 410 to cut off the first pipeline 130.
[0055] Further, in the present application, there is no limitation on the connection position of the second pipe 330 on the first pipe 130. Figure 1 and Figure 4 The second pipeline 330 can be connected to a position in the first pipeline 130 located above the first gate door 410, or can be connected to a position in the first pipeline 130 located below the first gate door 410. In one embodiment, the second pipeline 330 is connected to a position in the first pipeline 130 located below the first gate door 410, and the second pipeline 330 is connected to an end of the first pipeline 130 close to one end of the first coal mill 140, so as to reduce the impact of the material in the second pipeline 330 falling into the first coal mill 140 on the first coal mill 140.
[0056] In the coal supply device provided in this application, Figure 1 and Figure 2 As shown, a third coal feeder 220 and a second coal mill 230 are sequentially connected below the second coal hopper 210. The third coal feeder 220 is used to feed the coal material in the second coal hopper 210 into the second coal mill 230 to grind the coal into powder for use. A second gate 420 is also provided between the second coal hopper 210 and the third coal feeder 220, and a third gate 430 is provided between the third coal feeder 220 and the second coal mill 230.
[0057] The specific structures of the first coal feeder 120 and the third coal feeder 220 are not limited in the present application. In some embodiments, the structures of the first coal feeder 120 and the third coal feeder 220 are consistent with the structure of the second coal feeder 320.
[0058] The present application also provides a coal supply system, including the coal supply device provided in the present application.
[0059] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A coal supply device, characterized in that: It comprises a first coal hopper and a second coal hopper, a first coal feeder and a first coal mill are arranged below the first coal hopper, the first coal feeder is used to feed the material in the first coal hopper into the coal mill, and the first coal feeder and the first coal mill are connected through a first pipeline; A material distribution assembly is connected between the second coal hopper and the first pipeline to deliver the material in the second coal hopper into the first pipeline; The material distribution assembly includes a distribution bin, a second coal feeder and a second pipeline connected in sequence; one end of the distribution bin is connected to the second coal hopper, and the other end is connected to the second coal feeder; the end of the second pipeline away from the second coal feeder is connected to the first pipeline; an anti-blocking mechanism is also provided in the distribution bin, and the anti-blocking mechanism includes a rotating shaft with blades.
2. The coal supply device according to claim 1, characterized in that: The first pipeline is provided with a first gate, the second pipeline is connected to the top or bottom of the first gate, and the first gate is used to cut off the inside of the first pipeline.
3. The coal supply device according to claim 1, characterized in that: The diameter of the second pipe is in the range of 400-1000 mm.
4. The coal supply device according to claim 1, characterized in that: The second pipeline is connected to an end of the first pipeline close to the first coal mill.
5. The coal supply device according to claim 1, characterized in that: The second coal feeder is arranged horizontally.
6. The coal supply device according to claim 1, characterized in that: The sub-bin is a hyperbolic coal hopper.
7. The coal supply device according to claim 6, characterized in that: The sub-bin is equipped with an anti-blocking mechanism.
8. The coal supply device according to any one of claims 1 to 7, characterized in that: The first pipeline includes a vertical section arranged vertically, the diameter of the vertical section is in the range of 400-1000 mm, and the height is in the range of 200-500 mm.
9. A coal supply system, characterized in that: It comprises the coal supply device as described in any one of claims 1-8.