Raw coal bunker separating structure capable of improving peak regulation flexibility

Abstract

The utility model relates to the technical field of coal conveying equipment, and discloses a raw coal bunker separating structure capable of increasing peak regulation flexibility, which comprises a coal bunker body, a plurality of separating beams are arranged in the coal bunker body at intervals along the vertical direction, each separating beam is arranged along the radial direction of the coal bunker body, and two ends of each separating beam are fixedly connected with the inner wall of the coal bunker body; a partition plate is arranged between every two adjacent partition beams. The interior of the coal bunker body is divided into two storage spaces through the partition beam and the partition plate. According to the utility model, through the modular arrangement of the separation beams and the separation plates, the stress strength of the internal bunker structure of the coal bunker can be improved, targeted replacement can be realized during subsequent damage, the maintenance cost and maintenance difficulty are reduced, the shutdown time is shortened, and the coal conveying 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 compartment structure that increases peak-shaving flexibility. 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 low-peak or off-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 divide the internal space of the coal bunker, so as to store coal of different qualities in the same bunker and achieve flexible peak-shaving.

[0003] However, the following problems exist in actual operation: Existing partitions are usually one-piece steel plates, directly welded inside the coal bunker to divide the internal space. Due to the different discharge rates of high-quality and low-quality coal during operation, the coal level on both sides of the partition is difficult to maintain uniformity, resulting in uneven stress on both sides. Under long-term operation, the partition may deform or even suffer structural damage due to excessive coal pressure on one side. This necessitates the complete replacement and removal of the partition, which is not only labor-intensive and time-consuming, affecting continuous coal transportation, but also increases equipment maintenance costs. Therefore, there is an urgent need for a modular coal bunker structure for coal-fired power units that can both improve stress resistance and facilitate targeted replacement and maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a raw coal bunker compartment structure that increases peak-shaving flexibility. Through the modular setting of partition beams and partitions, the strength of the internal compartment structure of the coal bunker can be improved, and targeted replacement can be achieved in case of subsequent damage, thereby reducing the cost and difficulty of maintenance, shortening downtime, and ensuring coal conveying efficiency.

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

[0006] A coal bunker compartment structure for increasing peak-shaving flexibility includes a coal bunker body. Multiple partition beams are arranged vertically within the coal bunker body. Each partition beam is arranged radially along the coal bunker body, and its two ends are fixedly connected to the inner wall of the coal bunker body. A partition is provided between two adjacent partition beams. The interior of the coal bunker body is divided into two storage spaces by the partition beams and the partition.

[0007] Preferably, the partition beam is an H-beam.

[0008] Preferably, two partitions are symmetrically arranged between two adjacent partition beams, and the two partitions are respectively located on the outside of the corresponding partition beam.

[0009] Preferably, L-shaped slots are provided at both the upper and lower ends of the partition.

[0010] Preferably, the width of the slot is the same as the width of the flange of the separator beam.

[0011] Preferably, the two symmetrical partitions are connected by a support frame.

[0012] Preferably, the support frame is detachably connected to the partition.

[0013] 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.

[0014] 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.

[0015] Preferably, the main support and the diagonal support are integrally formed.

[0016] Compared with existing technologies, the advantages of this invention are as follows: This invention forms a spatial truss-like support system through multiple spaced partition beams, and significantly improves the overall rigidity of the coal bunker body through radially fixed connection at both ends, effectively dispersing the lateral pressure generated by coal accumulation and reducing local stress concentration in the partitions and bunker walls. The partition beams, acting as transverse reinforcing ribs, together with the partitions, form a grid-like reinforced structure, which can resist the deformation of the bunker body caused by dynamic coal loads, especially reducing the risk of bending deformation of the partitions under long-term load-bearing conditions, thus extending the service life of the structure.

[0017] Furthermore, the vertically spaced partition beams form multi-level support nodes, which can adapt to the non-uniform pressure distribution caused by changes in coal level within the coal bunker, avoiding structural failure due to excessive stress at a single point and ensuring the stability of the bunker's shape. The rigid connection between the partition beams and the bunker walls simplifies the installation process of the internal support structure and facilitates independent maintenance of the bunker space. Maintenance does not require complete emptying of the bunker, reducing operation and maintenance costs. Localized maintenance and replacement can also effectively shorten construction time and ensure the continuity of coal transportation. Attached Figure Description

[0018] Figure 1 This is a front view of an embodiment of this application;

[0019] Figure 2 This is a partial cross-sectional view of the coal bunker body according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the two partitions connected in an embodiment of this application. Detailed Implementation

[0021] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0022] like Figures 1 to 3 As shown, the present invention discloses a coal bunker compartment structure for increasing peak-shaving flexibility, comprising a coal bunker body 1. Multiple partition beams 2 are arranged vertically at intervals within the coal bunker body 1. Each partition beam 2 is radially arranged along the coal bunker body 1, and its two ends are fixedly connected to the inner wall of the coal bunker body 1. A partition 3 is provided between adjacent partition beams 2. The interior of the coal bunker body 1 is divided into two storage spaces by the partition beams 2 and the partition 3. The present invention forms a spatial truss-like support system through the multiple partition beams 2 arranged at intervals. The radially fixed connection at both ends significantly improves the overall rigidity of the coal bunker body 1, effectively disperses the lateral pressure generated by coal accumulation, and reduces local stress concentration in the partition 3 and the bunker wall. The partition beams 2, as transverse reinforcing ribs, together with the partition 3, form a grid-like reinforcement structure, which can resist the deformation of the bunker body caused by dynamic loads of coal, especially reducing the risk of bending deformation of the compartment partition 3 under long-term load-bearing conditions, and extending the service life of the structure.

[0023] The partition beam 2 is preferably made of H-beams. H-beams have wide and thick flanges, a better web-to-flange ratio, high bending stiffness, and stronger overall stability, effectively ensuring the strength of the compartment structure and its service life. Furthermore, two partition plates 3 are symmetrically arranged between two adjacent partition beams 2, with each partition plate 3 located on the outer side of its corresponding partition beam 2. Each partition plate 3 has L-shaped slots 4 at both its upper and lower ends, with the width of the slots 4 being the same as the flange width of the partition beam 2. This allows the partition plate 3 to abut against the flanges of the upper and lower partition beams 2 using the two slots 4, increasing the contact area between the partition plate 3 and the partition beam 2 and improving its load-bearing capacity.

[0024] Furthermore, the two symmetrical partitions 3 are connected by a support frame. The support frame is placed between the two partitions 3 to reinforce the partitions 3 and improve their resistance to deformation. The support frame and the partitions 3 are preferably connected in a detachable manner to facilitate installation and subsequent maintenance and replacement, and to avoid damage to the partition beam 2 caused by frequent cutting during subsequent replacement due to welding. Specifically, the support frame includes a central main support 5, with both ends of the main support 5 abutting against the inner walls of two opposing partitions 3; the main support 5 is provided with diagonal braces 6, which abut against the inner walls of the partitions 3 on both sides of the main support 5; through the cooperation of the support and the diagonal braces 6, a stable support structure can be formed between the two partitions 3, greatly ensuring the strength of the connection between the two partitions 3 and improving its load-bearing capacity; preferably, the main support 5 and the diagonal braces 6 are integrally formed; in addition, both ends of the main support 5 are provided with screws 7, and screw holes are opened on the partitions 3. After the screws 7 pass through the screw holes, nuts 8 are provided. The connection between the nuts 8 and the screws 7 can realize the installation connection of the two partitions 3 on both sides of the two partition beams 2. The structure is simple and the operation is convenient.

[0025] In use, this utility model first welds the partition beam 2, and then sets the partition 3 between two adjacent partition beams 2. The two adjacent partitions 3 on each side are in contact to prevent coal from accumulating between the two partitions 3. At this time, the inside of the coal bunker body 1 is divided into two storage spaces to store low-quality coal and high-quality coal respectively. A hydraulic two-way slide valve 9 is set at the bottom of the coal bunker body 1. The operation of feeding materials individually or simultaneously can be achieved by opening the door plate on the hydraulic two-way slide valve 9 alone or simultaneously, thereby realizing flexible coal blending operation and improving the flexibility of peak shaving.

Claims

1. A raw coal bunker compartmentation structure to increase peak-shaving flexibility, characterized in that: The coal bunker includes a main body, in which multiple partition beams are arranged at intervals along the vertical direction. Each partition beam is arranged radially along the main body and its two ends are fixedly connected to the inner wall of the main body. A partition is provided between two adjacent partition beams. The interior of the coal bunker is divided into two storage spaces by the partition beams and the partition.

2. The raw coal bunkering structure for increasing peak-shaving flexibility according to claim 1, characterized in that: The aforementioned partition beam is an H-beam.

3. The raw coal bunkering structure for increasing peak-shaving flexibility according to claim 2, characterized in that: Two partitions are symmetrically arranged between two adjacent partition beams, and the two partitions are located on the outside of the corresponding partition beams.

4. The raw coal bunkering structure for increasing peak-shaving flexibility according to claim 3, characterized in that: The partition plate has L-shaped slots at both the top and bottom.

5. The raw coal bunkering structure for increasing peak-shaving flexibility according to claim 4, characterized in that: The width of the slot is the same as the width of the flange of the separator beam.

6. The raw coal bunkering structure for increasing peak-shaving flexibility according to claim 2, characterized in that: The two symmetrical partitions are connected by a support frame.

7. The raw coal bunkering structure for increasing peak-shaving flexibility according to claim 6, characterized in that: The support frame is detachably connected to the partition.

8. The raw coal bunkering structure for increasing peak-shaving flexibility according to claim 7, 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.

9. The raw coal bunkering structure for increasing peak-shaving flexibility according to claim 8, 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.

10. The raw coal bunkering structure for increasing peak-shaving flexibility according to claim 8, characterized in that: The main support and the diagonal support are integrally formed.

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