Coal power unit raw coal bunker with bunker separation structure

Abstract

The utility model relates to the technical field of coal conveying equipment, and discloses a coal power unit raw coal bunker with a bunker dividing structure, which comprises a coal bunker body, a dividing part is arranged in the coal bunker body along the vertical direction, and the interior of the coal bunker body is divided into two storage cavities by the dividing part; the separating part is composed of two separating plates which are symmetrically arranged, and the two separating plates are each of an outwards-protruding arc-shaped structure. According to the utility model, the separation function of the coal bunker can be ensured, the deformation resistance of the separation plate and the operation reliability of the coal bunker are improved, and the working efficiency is ensured.

Description

Technical Field

[0001] This utility model relates to the field of coal conveying equipment technology, and in particular to a raw coal bunker for a coal-fired power unit with a compartmentalized structure. Background Technology

[0002] To meet the requirements of electricity market regulation and ensure the fundamental interests of power plants, generating units need to have deep peak-shaving capabilities to meet electricity demand at different times. Since the combustion capacity and price difference of different coal qualities vary greatly, in order to save costs, low-quality coal or a mixture of high-quality and low-quality coal is generally used for production during off-peak or flat-peak periods, while high-quality coal is used during peak periods. In existing technologies, partitions are usually installed in the middle of the coal bunker to separate the internal space of the coal bunker, so as to achieve the purpose of storing coal of different qualities separately.

[0003] However, the following problems exist in actual operation: coal level imbalance and uneven load. Due to the different discharge rates of high-quality and low-quality coal, the coal level height on both sides of the baffle is difficult to maintain, resulting in uneven stress on both sides of the baffle. Under long-term operation, the baffle may deform or even be structurally damaged due to excessive coal pressure on one side, affecting the overall stability of the coal bunker. After the baffle deforms, the effective coal storage space of the coal bunker will be squeezed, leading to a decrease in coal flowability and easy blockage near the coal discharge port, affecting the continuous delivery of coal. Frequent baffle correction or replacement will increase equipment maintenance costs, and shutdowns for maintenance due to coal bunker blockage will also reduce the unit's operating efficiency. Therefore, there is an urgent need for a coal-fired power unit raw coal bunker with a compartmentalized structure that can improve the deformation resistance of the baffle and the operational reliability of the coal bunker while ensuring the coal bunker's separation function. Utility Model Content

[0004] The purpose of this utility model is to provide a coal bunker for coal-fired power units with a compartmentalized structure, which can ensure the bunker's compartmentalization function while improving the deformation resistance of the partitions and the operational reliability of the bunker, thus ensuring work efficiency.

[0005] The present invention adopts the following technical solution:

[0006] A coal bunker for a coal-fired power unit with a compartmentalized structure includes a bunker body. A partition is provided in the vertical direction within the bunker body, dividing the interior of the bunker body into two storage chambers. The partition consists of two symmetrically arranged baffles, both of which have an outwardly convex arc-shaped structure.

[0007] Preferably, a support frame is provided between the two partitions.

[0008] Preferably, the support frame includes a central main support, the two ends of which abut against the inner walls of the two opposing partitions; the main support is provided with diagonal braces, which abut against the inner walls of the partitions on both sides of the main support.

[0009] Preferably, the diagonal brace is provided with an arc-shaped plate that matches the side wall of the partition.

[0010] Preferably, both ends of the main support are provided with screws, the partition plate is provided with screw holes, and the screws are provided with nuts after passing through the screw holes.

[0011] Preferably, the partition is provided with multiple reinforcing ribs at intervals from top to bottom.

[0012] Preferably, each main support is provided with two sets of diagonal braces, and the two sets of diagonal braces are distributed on both sides of the axis of the main support.

[0013] Preferably, the main support and the diagonal support are integrally formed.

[0014] Preferably, connecting plates are provided on both sides of the partition.

[0015] Preferably, the connecting plate and the partition are integrally formed.

[0016] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting an outwardly convex arc-shaped baffle within the coal bunker body, this utility model can convert the lateral pressure of the coal into dispersed stress along the arc surface of the baffle, making the stress distribution more uniform, avoiding local stress concentration, thereby significantly improving the deformation resistance of the baffle and extending its service life. Simultaneously, the arc-shaped baffle design can mitigate pressure differences caused by coal level variations, reduce the risk of deformation due to uneven stress, prevent compression of the coal storage space caused by deformation, ensure smooth coal flow, reduce the risk of blockage, improve coal conveying efficiency, reduce the frequency of downtime for maintenance due to baffle damage, and lower maintenance costs. Attached Figure Description

[0017] Figure 1 This is a front view of an embodiment of this application;

[0018] Figure 2 This is a top view of the coal bunker body according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the partition structure in an embodiment of this application. Detailed Implementation

[0020] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0021] like Figures 1 to 3As shown, the coal bunker of a coal-fired power unit with a compartmentalized structure according to this utility model includes a bunker body 1. A partition is vertically arranged inside the bunker body 1, dividing the interior of the bunker body 1 into two storage chambers for storing high-quality coal and low-quality coal respectively. The partition consists of two symmetrically arranged baffles 2, both of which have an outwardly convex arc-shaped structure. The outwardly convex arc-shaped baffles 2 can convert the lateral pressure of the coal into dispersed stress along the arc surface of the baffles 2, making the stress distribution more uniform, avoiding local stress concentration, thereby significantly improving the deformation resistance of the baffles 2 and extending their service life.

[0022] In addition, connecting plates 9 are provided on both sides of the partition 2, and the partition 2 is fixedly connected to the inner wall of the coal bunker body 1 through the connecting plates 9. The connecting plates are integrally formed with the partition 2 to ensure its structural strength.

[0023] Furthermore, a support frame is provided between the two partitions 2. The support frame is arranged at intervals along the longitudinal and transverse directions of the partitions 2. The support frame provides support to the interior of the partitions 2, enhances the structural strength of the partitions 2, and further improves the deformation resistance of the partitions 2. Specifically, the support frame includes a central main support 3, with both ends of the main support 3 abutting against the opposing inner walls of the two partitions 2. The main support 3 is provided with diagonal braces 4, with two sets of diagonal braces 4 on each main support 3. The two sets of diagonal braces 4 are distributed on both sides of the axis of the main support 3, and the end of the diagonal brace 4 away from the main support 3 abuts against the inner walls of the partitions 2 on both sides of the main support 3. The cooperation between the main support 3 and the diagonal braces 4 increases the contact area with the inner walls of the partitions 2, thereby improving the support strength of the partitions 2. Among them, the diagonal braces 4 are provided with arc-shaped plates that match the side walls of the partitions 2, so that the diagonal braces 4 and the partitions 2 can be in close contact. The main support 3 and the diagonal braces 4 are integrally formed to ensure the structural strength of the support frame.

[0024] In addition, both ends of the main support 3 are provided with screws 5, and the partition 2 is provided with screw holes 6. After the screws 5 pass through the screw holes 6, nuts 7 are provided. The two partitions 2 are connected by nuts 7 and screws 5, which facilitates the connection and assembly of the two partitions 2. In this embodiment, the partition 2 is provided with multiple reinforcing ribs 8 at intervals from top to bottom. The reinforcing ribs 8 further enhance the strength of the partition 2, improve the partition 2's resistance to deformation, and thus extend the service life of the partition 2.

[0025] This invention, by incorporating a convex arc-shaped baffle 2 within the coal bunker body 1, transforms the lateral pressure of the coal into dispersed stress along the arc surface of the baffle 2. This results in more uniform stress distribution, avoids localized stress concentration, and significantly improves the deformation resistance of the baffle 2, extending its service life. Simultaneously, the arc-shaped baffle 2 design mitigates pressure differences caused by coal level variations, reduces the risk of deformation due to uneven stress, prevents compression of the coal storage space caused by deformation, ensures smooth coal flow, reduces the risk of blockage, improves coal conveying efficiency, reduces the frequency of downtime for maintenance due to baffle 2 damage, and lowers maintenance costs.

Claims

1. A raw coal storage bin for a coal-fired power unit with a compartmentalized structure, characterized in that: The coal bunker includes a main body, which has a partition along the vertical direction. The interior of the coal bunker is divided into two storage chambers by the partition. The partition consists of two symmetrically arranged baffles, both of which have an outwardly convex arc-shaped structure.

2. The raw coal bunker of a coal-fired power unit with a compartmentalized structure according to claim 1, characterized in that: A support frame is provided between the two partitions.

3. The raw coal bunker of a coal-fired power unit with a compartmentalized structure according to claim 2, characterized in that: The support frame includes a central main support, the two ends of which abut against the inner walls of the two opposing partitions; the main support is provided with diagonal braces, which abut against the inner walls of the partitions on both sides of the main support.

4. The raw coal bunker of a coal-fired power unit with a compartmentalized structure according to claim 3, characterized in that: The diagonal brace is provided with an arc-shaped plate that matches the side wall of the partition.

5. The raw coal bunker of a coal-fired power unit with a compartmentalized structure according to claim 3, characterized in that: Both ends of the main support are provided with screws, and the partition plate is provided with screw holes. The screws pass through the screw holes and are provided with nuts.

6. The raw coal bunker of a coal-fired power unit with a compartmentalized structure according to claim 1, characterized in that: The partition plate is provided with multiple reinforcing ribs at intervals from top to bottom.

7. The raw coal bunker of a coal-fired power unit with a compartmentalized structure according to claim 3, characterized in that: Each of the main supports is provided with two sets of diagonal braces, which are distributed on both sides of the axis of the main support.

8. The raw coal bunker of a coal-fired power unit with a compartmentalized structure according to claim 7, characterized in that: The main support and the diagonal support are integrally formed.

9. The raw coal bunker of a coal-fired power unit with a compartmentalized structure according to claim 1, characterized in that: Connecting plates are provided on both sides of the partition.

10. The raw coal bunker of a coal-fired power unit with a compartmentalized structure according to claim 9, characterized in that: The connecting plate and the partition plate are integrally formed.

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