Redundant powdering device

Abstract

The utility model provides a powder generating redundancy device. The powder sending redundancy device comprises a pulverized coal preparation system; a pulverized coal bunker; the transportation pipeline is connected with the pulverized coal preparation system and the pulverized coal bunker, pulverized coal output by the pulverized coal preparation system is transported into the pulverized coal bunker through the transportation pipeline, a gate valve is arranged on the transportation pipeline, and the transportation pipeline between the gate valve and the pulverized coal preparation system at least comprises a bent pipe section; the two ends of the bent pipe section are detachably connected with the conveying pipeline through flange structures. According to the utility model, the problem of difficult maintenance and replacement of the powdering redundant device in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal powder preparation, in particular to a coal powder redundant device. Background Art

[0002] In the current dry coal powder gasification device, the qualified coal powder produced by the coal powder preparation system is sent to the coal powder bin at normal pressure through the pressure increase and release sequential control cycle of the sending tank, and serves as the raw material for the fluidized bed pressurized gasification reaction. Because the particle size of the coal powder produced by the coal powder preparation system is below 500μm, the inner wall of the transport pipeline will be rapidly impacted and rubbed by the dry coal powder during the process of being transported to the gasification powder bin by the sending tank through low-pressure nitrogen. The elbows of the transport pipeline of the existing redundant pulverizing device are prone to wear and leakage. Since the transport pipeline is long and is basically connected by welding, when the elbow of the pipeline is worn and leaked, the only way to ensure the continued operation of the redundant pulverizing device is to patch and plug the leak on the outer layer of the equipment and pipeline, and it is impossible to quickly replace it online.

[0003] That is to say, the redundant powder-shaving device in the prior art has the problem of being difficult to repair and replace. Utility Model Content

[0004] The main purpose of the utility model is to provide a redundant powder-sending device to solve the problem that the redundant powder-sending device in the prior art is difficult to repair and replace.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a redundant pulverizing device, including: a coal powder preparation system; a coal powder bin; a transport pipeline, the transport pipeline is connected to the coal powder preparation system and the coal powder bin, the coal powder output by the coal powder preparation system is transported to the coal powder bin through the transport pipeline, a gate valve is arranged on the transport pipeline, the transport pipeline between the gate valve and the coal powder preparation system includes at least one curved pipe section, and both ends of the curved pipe section are detachably connected to the transport pipeline through a flange structure.

[0006] Furthermore, the transport pipeline between the gate valve and the pulverized coal bin includes at least another curved pipe section, and both ends of the curved pipe section are detachably connected to the transport pipeline through a flange structure.

[0007] Furthermore, the output end of the transport pipeline is connected to the coal powder bin through a powder bin distributor, and the powder bin distributor is detachably arranged on the top of the coal powder bin.

[0008] Furthermore, the partial pipe section connecting the transport pipeline and the powder silo distributor is a curved pipe section, the two ends of the curved pipe section are respectively detachably connected to the transport pipeline and the powder silo distributor through two flange structures, and the connection position between the curved pipe section and the powder silo distributor is located at the top of the powder silo distributor.

[0009] Further, the transport direction of at least a portion of the curved pipe section to the powder bin distributor is parallel to the transport direction of the powder bin distributor to the coal powder bin.

[0010] Further, the gate valve has a ceramic inner part.

[0011] Furthermore, there are multiple pulverized coal bins and multiple transport pipelines. The pulverized coal preparation system is connected to each pulverized coal bin through different transport pipelines, and at least two of the multiple transport pipelines share part of the pipelines.

[0012] Furthermore, there are multiple pulverized coal bins, which include at least a first pulverized coal bin and a second pulverized coal bin, and the transport pipeline includes at least one main transport pipe section and two secondary transport pipe sections. One end of the main transport pipe section is connected to the pulverized coal preparation system, and the other end of the main transport pipe section is connected to the two secondary transport pipe sections through a Y-type tee structure. The output ends of the two secondary transport pipe sections are respectively connected to the first pulverized coal bin and the second pulverized coal bin.

[0013] Furthermore, the secondary transport pipe section includes at least two curved pipe sections.

[0014] Furthermore, the powder redundancy device also includes a temperature detector and a powder leakage detector, and the temperature detector and the powder leakage detector are both arranged at the curved pipe section.

[0015] By applying the technical solution of the utility model, the redundant pulverizing device includes a coal powder preparation system, a coal powder bin, and a transport pipeline. The transport pipeline is connected to the coal powder preparation system and the coal powder bin. The coal powder output by the coal powder preparation system is transported to the coal powder bin through the transport pipeline. A gate valve is provided on the transport pipeline. The transport pipeline between the gate valve and the coal powder preparation system includes at least one curved pipe section. Both ends of the curved pipe section are detachably connected to the transport pipeline through a flange structure.

[0016] The transport pipeline of the pulverizing redundant device is used to transport the pulverized coal output by the pulverized coal preparation system to the pulverized coal bin. Due to the physical properties of the pulverized coal, the inner wall of the transport pipeline will be impacted and rubbed by the pulverized coal during transportation. Long-term impact and friction can easily cause leakage of the transport pipeline, especially at the curved section of the transport pipeline, where the loss is particularly obvious. Therefore, the present application arranges the curved section to be detachably connected to the main transport pipeline through a flange structure, and arranges the pipeline to be a segmented, easily detachable flange connection, which can facilitate timely disassembly and replacement before the curved section is damaged or the pulverized coal leaks, making replacement faster and more convenient, and reducing the frequency of leakage of the pulverizing redundant device due to wear. When the pulverizing redundant device has an abnormal situation and needs to be repaired, the handover time and maintenance time are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic structural diagram of a powder redundancy device according to an optional embodiment of the utility model is shown.

[0019] The above drawings include the following reference numerals:

[0020] 10. Coal powder preparation system; 21. First coal powder bin; 22. Second coal powder bin; 31. Main transport pipe section; 32. Secondary transport pipe section; 321. Bent pipe section; 322. Gate valve; 40. Powder bin distributor; 50. Y-type three-way structure; 60. Flange structure. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0023] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0024] In the existing redundant pulverizing device, since the pulverized coal particle size produced by the pulverized coal preparation system 10 is below 500μm, during the process of being transported to the pulverized coal bin through low-pressure nitrogen in the transportation pipeline, the inner wall of the transportation pipeline will be rapidly impacted and rubbed by the dry pulverized coal, and the powder bin distributor that receives the pulverized coal in the powder bin will also be subjected to greater impact and friction. This causes the curved pipe section of the transportation pipeline before entering the powder bin, the flange reducer of the dome valve, and the pulverized coal distributor facing the pipeline port to often wear out, which can easily lead to leakage of dry pulverized coal. Leakage of dry pulverized coal in the environment can cause safety accidents such as fire or flash explosion, and can also cause environmental accidents. Frequent wear and leakage of redundant pulverizing devices requires the pulverized coal preparation to be shut down for processing, forcing the pulverized coal bin to reduce its load, and failing to ensure high-quality operation.

[0025] In order to solve the problem that the redundant powder-sending device in the prior art is difficult to repair and replace, the utility model provides a redundant powder-sending device.

[0026] like Figure 1 As shown, the redundant pulverizing device includes a pulverized coal preparation system 10, a pulverized coal bin, and a transport pipeline. The transport pipeline is connected to the pulverized coal preparation system 10 and the pulverized coal bin. The pulverized coal output by the pulverized coal preparation system 10 is transported to the pulverized coal bin through the transport pipeline. A gate valve 322 is provided on the transport pipeline. The transport pipeline between the gate valve 322 and the pulverized coal preparation system 10 includes at least one curved pipe section 321. Both ends of the curved pipe section 321 are detachably connected to the transport pipeline through a flange structure 60.

[0027] The transport pipeline of the pulverizing redundant device is used to transport the pulverized coal output by the pulverized coal preparation system 10 to the pulverized coal bin. Due to the physical properties of pulverized coal, the inner wall of the transport pipeline will be impacted and rubbed by the pulverized coal during transportation. Long-term impact and friction can easily cause leakage of the transport pipeline, especially at the curved pipe section 321 of the transport pipeline, where the loss is particularly obvious. Therefore, the present application arranges the curved pipe section 321 to be detachably connected to the main transport pipeline through the flange structure 60, and arranges the pipeline to be segmented and easily detachable with a flange connection, which can facilitate timely disassembly and replacement of the curved pipe section 321 before damage or leakage of pulverized coal, making replacement faster and more convenient, and reducing the frequency of leakage of the pulverizing redundant device due to wear. When the pulverizing redundant device has an abnormal condition and needs to be repaired, the handover time and maintenance time are reduced.

[0028] It should be noted that the curved pipe section 321 is a part of the transport pipeline, but the curved pipe section 321 is detachably connected to the transport pipeline of the main body through the flange structure 60. The curved pipe section 321 is not a straight pipe section but a pipe section with a curved curvature.

[0029] Specifically, the transport pipeline between the gate valve 322 and the pulverized coal bin includes at least another curved pipe section 321, and both ends of the curved pipe section 321 are detachably connected to the transport pipeline through the flange structure 60. This arrangement makes it easier to operate and more efficient to replace the curved pipe section 321 when it is necessary to disassemble and replace it, while avoiding the situation where the entire transport pipeline needs to be replaced or directly patched, which is conducive to ensuring the reliability of the transport pipeline. In addition, the curved pipe section 321 is connected to the transport pipeline through the flange structure 60, which is conducive to ensuring the safety of the connection and greatly reducing the manpower and material costs of maintenance.

[0030] like Figure 1As shown, the output end of the transport pipeline is connected to the coal powder bin through the powder bin distributor 40, and the powder bin distributor 40 is detachably arranged on the top of the coal powder bin. Placing the powder bin distributor 40 on the top of the coal powder bin allows the coal powder to enter the coal powder bin from top to bottom, reducing the impact and friction between the coal powder and the powder bin distributor 40 and the coal powder bin, which is conducive to extending the service life of the powder bin distributor 40.

[0031] It should be noted that the powder bin distributor 40 is detachably connected to the pulverized coal bin via the flange structure 60, thus avoiding the use of direct welding to connect the powder bin distributor 40 to the pulverized coal bin, thereby improving the convenience of maintenance and replacement.

[0032] Specifically, the section of the pipe connecting the transport pipeline and the powder bin distributor 40 is a curved pipe section 321, and the two ends of the curved pipe section 321 are detachably connected to the transport pipeline and the powder bin distributor 40 through two flange structures 60, and the connection position of the curved pipe section 321 and the powder bin distributor 40 is located at the top of the powder bin distributor 40. This arrangement not only facilitates the disassembly and replacement of the curved pipe section 321, but also facilitates the disassembly and replacement of the powder bin distributor 40, thereby improving the convenience of maintenance and replacement.

[0033] Specifically, the transportation direction of at least part of the curved pipe section 321 to the powder bin distributor 40 is parallel to the transportation direction of the powder bin distributor 40 to the coal powder bin. In other words, the extension direction of the curved pipe section 321 where the transportation pipeline is connected to the powder bin distributor 40 and the part of the pipe section close to the powder bin distributor 40 is parallel to the transportation direction of the powder bin distributor 40 to the coal powder bin. This arrangement effectively adjusts the connection position of the curved pipe section 321 and the powder bin distributor 40, so that the powder bin distributor 40 is a direct injection type, and changes the position where the transportation pipeline enters the powder bin distributor 40, from the original side tangent feeding to the middle direct injection feeding, so that the coal powder enters the powder bin distributor 40 from top to bottom and then enters the coal powder bin, which can greatly reduce the friction of the coal powder on the powder bin distributor 40 and the inner wall of the coal powder bin, thereby reducing wear and extending the service life of the powder bin distributor 40 and the coal powder bin.

[0034] Specifically, the gate valve 322 has a ceramic internal. The dome valve internals used in the prior art are not wear-resistant, and the dome valve diaphragm is easily damaged during use, causing the gate valve 322 to be unable to open and close normally. The present application adopts a programmable gate valve XV01 with ceramic internals, which improves the problem of the dome valve being prone to failure and reduces the frequency of valve failures in the transportation pipeline. On the one hand, the provision of ceramic internals makes the gate valve 322 more wear-resistant, which can make the gate valve 322 with ceramic internals more wear-resistant and extend the service life of the gate valve 322; on the other hand, it can reduce the problem of the inability to supply coal powder normally due to failure or damage of the gate valve 322 itself.

[0035] In an optional embodiment of the present application, there are multiple pulverized coal bins and multiple transport pipelines. The pulverized coal preparation system 10 is connected to each pulverized coal bin through different transport pipelines, and at least two of the multiple transport pipelines share part of the transport pipelines. By rationally planning the connection relationship between each pulverized coal bin and multiple transport pipelines, it is helpful to ensure that the pulverized coal output by the pulverized coal preparation system 10 can be transported to the corresponding pulverized coal bin through the corresponding transport pipeline, thereby ensuring the stability of the transportation work.

[0036] like Figure 1 As shown, in a specific embodiment of the present application, the plurality of pulverized coal bins include at least a first pulverized coal bin 21 and a second pulverized coal bin 22, and the transport pipeline includes at least one main transport pipe section 31 and two secondary transport pipe sections 32. One end of the main transport pipe section 31 is connected to the pulverized coal preparation system 10, and the other end of the main transport pipe section 31 is connected to the two secondary transport pipe sections 32 through a Y-shaped three-way structure 50, and the output ends of the two secondary transport pipe sections 32 are respectively connected to the first pulverized coal bin 21 and the second pulverized coal bin 22. The use of the Y-shaped three-way structure 50 to connect the main transport pipe section 31 and the two secondary transport pipe sections 32 improves the efficiency of pulverized coal transmission, and at the same time ensures that the transport pipeline can be replaced in time when an abnormal situation occurs.

[0037] like Figure 1 As shown, the secondary transport pipe section 32 between the Y-type three-way structure 50 and the first coal powder bin 21 includes at least two curved pipe sections 321. Specifically, the secondary transport pipe section 32 is divided into at least five pipe sections, and two of the five pipe sections are curved pipe sections 321. Specifically, the secondary transport pipe section 32 includes a first pipe section, a first curved pipe section 321, a second pipe section, a gate valve 322, a third pipe section, a second curved pipe section 321, and a powder bin distributor 40 along the transport direction. The two adjacent structures are detachably connected by a flange structure 60. The present application facilitates the replacement and maintenance of the pipe section by rationally planning the number of segments and the connection method of the secondary transport pipe section 32. At the same time, it is easy to overhaul and disassemble, which is conducive to reducing the cost of replacement and maintenance. Due to the easy wear characteristics of the curved pipe section 321, two detachable curved pipe sections 321 are arranged in the secondary transport pipe section 32 to facilitate replacement when there is wear and leakage.

[0038] In an optional embodiment of the present application, the redundant powder generating device further includes a temperature detector and a powder leakage detector, both of which are arranged at the curved pipe section 321. In actual application, a temperature detector and a powder leakage detector can be arranged at the curved pipe section 321 of the transport pipeline, and the control console is electrically connected to the temperature detector and the powder leakage detector, and uniformly monitored by the control console. The temperature detector can detect in real time the heating and temperature rise caused by the friction between the coal powder and the metal inner wall of the curved pipe section 321, and timely repair the curved pipe section 321 before it is damaged and the coal powder leaks; the powder leakage detector can timely detect whether the content of coal powder in the air near the curved pipe section 321 exceeds the specified value, and once the specified value is reached, an early warning will be issued to reduce the safety accidents such as fire or flash explosion caused by the leakage of dry coal powder in the environment.

[0039] Optionally, the above-mentioned transport pipeline can be set as a double-layer structure as a whole, and the material is metal, or only the transport pipe section 32 is set as a double-layer structure, or only the bent pipe section 321 is set as a double-layer structure. It can be set according to actual conditions. By selecting a double-layer structure, it is beneficial to increase the wear resistance of the transport pipeline and ensure the safety of coal powder transportation. The double-layer structure is equivalent to a pipe section formed by sleeved pipe sections of different diameters together.

[0040] In summary, this application divides the transport pipeline into multiple sections by rationally planning the composition and connection method of the transport pipeline, so as to facilitate the maintenance and replacement of one or more sections of the pipeline, thereby ensuring the reliability and safety of the entire transport pipeline, and further ensuring the long-term stable operation of the redundant powder device. The frequency of leakage of the redundant powder device due to wear is reduced, the service life of each structure and pipeline in the redundant powder device is extended, the frequency of valve failure is reduced, and when the transport pipeline has an abnormal situation and needs maintenance, the handover time and maintenance time are reduced, ensuring the high-quality operation of the redundant powder device.

[0041] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A powder redundancy device, characterized in that: include: Coal powder preparation system (10); Pulverized coal silo; A transport pipeline, the transport pipeline being connected to the pulverized coal preparation system (10) and the pulverized coal bin, the pulverized coal output by the pulverized coal preparation system (10) being transported to the pulverized coal bin via the transport pipeline, a gate valve (322) being provided on the transport pipeline, the transport pipeline between the gate valve (322) and the pulverized coal preparation system (10) comprising at least one curved pipe section (321), the two ends of the curved pipe section (321) being detachably connected to the transport pipeline via a flange structure (60).

2. The redundancy device for hair powder according to claim 1, characterized in that: The transport pipeline between the gate valve (322) and the pulverized coal bin comprises at least another section of the curved pipe section (321), and both ends of the curved pipe section (321) are detachably connected to the transport pipeline via the flange structure (60).

3. The redundancy device for hair powder according to claim 1, characterized in that: The output end of the transport pipeline is connected to the coal powder bin through a powder bin distributor (40), and the powder bin distributor (40) is detachably arranged on the top of the coal powder bin.

4. The redundancy device for hair powder according to claim 3, characterized in that: The partial pipe section connecting the transport pipeline and the powder silo distributor (40) is the curved pipe section (321), and the two ends of the curved pipe section (321) are detachably connected to the transport pipeline and the powder silo distributor (40) through the two flange structures (60), and the connection position between the curved pipe section (321) and the powder silo distributor (40) is located at the top of the powder silo distributor (40).

5. The redundancy device for hair powder according to claim 4, characterized in that: The transportation direction of at least a portion of the curved pipe section (321) to the powder bin distributor (40) is parallel to the transportation direction of the powder bin distributor (40) to the coal powder bin.

6. The redundancy device for hair powder according to claim 1, characterized in that: The gate valve (322) has ceramic internals.

7. The redundancy device for hair powder according to claim 1, characterized in that: There are multiple pulverized coal bins and multiple transport pipelines. The pulverized coal preparation system (10) is connected to each pulverized coal bin via different transport pipelines, and at least two of the multiple transport pipelines share a portion of the pipelines.

8. The redundancy device for hair powder according to claim 1, characterized in that: There are multiple pulverized coal bins, the multiple pulverized coal bins at least comprising a first pulverized coal bin (21) and a second pulverized coal bin (22); the transport pipeline at least comprising a main transport pipe section (31) and two secondary transport pipe sections (32); one end of the main transport pipe section (31) is connected to the pulverized coal preparation system (10); the other end of the main transport pipe section (31) is connected to the two secondary transport pipe sections (32) via a Y-shaped three-way structure (50); the output ends of the two secondary transport pipe sections (32) are respectively connected to the first pulverized coal bin (21) and the second pulverized coal bin (22).

9. The redundancy device for hair powder according to claim 8, characterized in that: The secondary transport pipe section (32) comprises at least two curved pipe sections (321).

10. The redundancy device for hair powder according to any one of claims 1 to 9, characterized in that: The powder redundancy device further comprises a temperature detector and a powder leakage detector, and both the temperature detector and the powder leakage detector are arranged at the curved pipe section (321).

Images