Coal chute wear degree prediction device, coal chute, and method

Abstract

The application provides a coal chute wear degree prediction device, a coal chute and a method, relates to the technical field of coal chute monitoring, and comprises a connecting piece and a prediction unit. The connecting piece is suitable for being connected with the pipe body of the coal chute. The prediction unit is connected with the end of the connecting piece which is away from the pipe body of the coal chute. The prediction unit has a first containing cavity for containing a pre-warning body. The pre-warning body can overflow the first containing cavity when the prediction unit is damaged to form a breakage opening which communicates with the first containing cavity. The cross-sectional area of the breakage opening is larger than the maximum cross-sectional area of the pre-warning body. The prediction unit is at least one and is arranged along the thickness direction. At least one parameter information, such as color, material, volume and shape, of the pre-warning body in any two prediction units is different. The application can establish a predictive maintenance mechanism based on state monitoring for the coal chute, and has simple overall structure and low cost.

Description

Technical Field

[0001] This invention relates to the field of coal chute monitoring technology, and in particular to a device, coal chute, and method for predicting the wear degree of a coal chute. Background Technology

[0002] As a core component of the coal conveying system in thermal power plants, the coal chute is subjected to continuous impact and wear from high-speed coal flows during coal transfer. Under long-term operation, its inner wall is prone to progressive erosion damage. Due to structural limitations and the complexity of operating conditions, conventional detection methods are insufficient for effective thickness monitoring of the coal chute. When penetrating wear leads to coal leakage, not only is an emergency shutdown for repairs required, but it also triggers a chain reaction, including decreased reliability of the coal conveying system and deterioration of on-site production indicators. In extreme cases, it may even induce secondary faults such as conveyor belt misalignment and coal blockage, thereby threatening the safe and stable operation of the generator unit and causing significant economic losses due to unplanned shutdowns.

[0003] Therefore, there is an urgent need to design a pipeline wear prediction device that can solve the above-mentioned technical problems in order to ensure the safe and economical operation of coal-fired power generation systems. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, one embodiment of the present invention proposes a coal chute wear degree prediction device, which can establish a predictive maintenance mechanism for the coal chute based on condition monitoring. The device has a simple overall structure and low cost.

[0006] Another embodiment of the present invention provides a coal chute.

[0007] Another aspect of the present invention provides a method for predicting the wear degree of a coal chute.

[0008] According to an embodiment of the present invention, a device for predicting the wear degree of a coal chute includes a connector and a prediction unit. The connector is adapted to be connected to the body of the coal chute. The prediction unit is connected to one end of the connector away from the body of the coal chute. The prediction unit has a first receiving cavity for accommodating a warning body. The warning body can overflow from the first receiving cavity when the prediction unit is damaged, forming a rupture that communicates with the first receiving cavity. The cross-sectional area of ​​the rupture is greater than the maximum cross-sectional area of ​​the warning body. The prediction unit is at least one and arranged along its thickness direction. At least one parameter of the color, material, volume, and shape of the warning bodies in any two prediction units is different.

[0009] According to an embodiment of the present invention, a coal chute wear prediction device can be installed on the outside of the coal chute body by a connector to establish a prediction mechanism for the wear degree of the coal chute. After the wall surface where the prediction unit is installed is worn through by the coal flow transported within it, the coal flow continues to scour the prediction unit. The prediction unit can be damaged by the scour and gradually form a rupture opening connecting to the first receiving cavity. Because the cross-sectional area of ​​the rupture opening is larger than the cross-sectional area of ​​the warning body, the warning body can overflow from the rupture opening into the first receiving cavity and then enter the inner cavity of the pipe body to mix with the coal flow. The prediction unit is at least one and arranged along its thickness direction. The parameter information of the warning bodies in any two prediction units is different. Therefore, based on the presence of warning bodies in the coal flow, the number of layers of the prediction unit worn through can be determined to predict the wear degree of the coal chute. Therefore, compared with related technologies, the present invention can establish a predictive maintenance mechanism for the coal chute based on condition monitoring, with a simple overall structure and low cost.

[0010] In some embodiments, the prediction unit includes a grid frame surrounding the first receiving cavity and capable of forming the rupture opening when the prediction unit is destroyed, wherein the cross-sectional area of ​​the grid openings of the grid frame is smaller than the maximum cross-sectional area of ​​the warning body; Alternatively, the first receiving cavity has a grid surface capable of forming the rupture when the prediction unit is damaged, wherein the cross-sectional area of ​​the grid holes of the grid surface is smaller than the maximum cross-sectional area of ​​the warning body.

[0011] In some embodiments, the warning body is a foam ball, and the foam balls in any two prediction units are of different colors.

[0012] In some embodiments, all of the prediction units are detachably connected to one end of the connector opposite to the coal drop pipe.

[0013] In some embodiments, the connector has an open second receiving cavity in which all the prediction units are disposed, and the prediction device further includes an inspection door connected to the connector to cover the opening of the second receiving cavity.

[0014] In some embodiments, the prediction device further includes a fastener, the connector having a through hole extending through the connector along its wall thickness direction, one end of the fastener passing through the through hole and connected to the prediction unit.

[0015] According to an embodiment of the present invention, a coal chute includes a pipe body and a prediction device. The outer wall surface of the pipe body includes a monitoring surface. The prediction device is any of the prediction devices described in the above embodiments. The connector of the prediction device is connected to the pipe body. The prediction unit of the prediction device is located outside the monitoring surface and is arranged along the wall thickness direction of the pipe body with the monitoring surface. The wall thickness direction of the pipe body is consistent with the thickness direction of the prediction unit. The prediction device can completely block the monitoring surface to prevent leakage of coal transported by the pipe body.

[0016] According to an embodiment of the present invention, the prediction device is designed such that after the monitoring surface of the pipe is worn through by the coal flow transported within it, the coal flow continues to scour the prediction unit, causing a rupture and overflow warning body to form on the prediction unit. Therefore, the number of layers worn through the prediction unit can be determined based on the presence of the warning body in the coal flow, thereby predicting the degree of wear of the coal chutes. The prediction method is highly operable and the prediction results are accurate. Therefore, compared with related technologies, the coal chutes using this prediction device can achieve real-time and effective monitoring of the thickness of the coal chutes without changing the structure of the coal chutes themselves, by externally installing the prediction device. The operation and maintenance costs are low, ensuring the safe and economical operation of the coal-fired power generation system.

[0017] In some embodiments, the inner wall surface of the tube is provided with a wear-resistant coating, or the tube is a wear-resistant tube.

[0018] According to an embodiment of the present invention, a method for predicting the wear degree of a coal chute, based on the coal chute described in any of the above embodiments, includes the following steps: Preparation: Install the prediction device on the outside of the coal chute to block the monitoring surface of the chute. Coal is conveyed through the pipe body. The coal flow inside the pipe body washes over the monitoring surface. After the monitoring surface is worn through, the coal flow continues to wash over the prediction unit of the prediction device until a rupture is formed on the prediction unit. The warning body of the prediction unit enters the inner cavity of the pipe body through the rupture and mixes with the coal flow. The wear level is predicted based on the presence of the warning body in the coal flow, and the wear level of the pipe is determined.

[0019] The technical advantages of the coal chute wear prediction method according to the embodiments of the present invention are the same as the technical advantages of the coal chute described above, and will not be repeated here.

[0020] In some embodiments, the specific steps of the coal conveying operation are as follows: The coal is transported through the pipe, and the coal flow washes over the monitoring surface; After the monitoring surface is ground through, the coal material is filled into the first receiving cavity through the grid holes of the prediction unit to buffer the scouring force of the coal flow; The coal flow continues to scour the prediction unit, destroying the connection between any two adjacent grid holes until the rupture is formed. The warning body enters the inner cavity of the pipe through the rupture and mixes with the coal flow.

[0021] In some embodiments, after the wear prediction operation, the prediction method further includes the step of: For inspection, open the inspection door, disassemble and replace the prediction unit, and repair the monitoring surface.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] Figure 1 This is a front view of the wear prediction device for the coal chute according to an embodiment of the present invention (the warning body is not shown in the figure).

[0024] Figure 2 This is a side view of the connection structure between the installation part and the prediction unit in the coal chute wear prediction device according to an embodiment of the present invention (the warning body is not shown in the figure).

[0025] Figure 3 This is a schematic diagram of the structure of a single row of small grid frames in the coal chute wear prediction device according to an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the coal chute according to an embodiment of the present invention.

[0027] Figure 5 This is a flowchart illustrating the method for predicting the wear degree of a coal chute according to an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the coal conveying operation in the method for predicting the wear degree of the coal chute according to an embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the structure of the coal chute during normal operation according to an embodiment of the present invention.

[0030] Figure 8 This is a schematic diagram of the structure of the coal chute when wear occurs according to an embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the structure of the coal chute when it reaches its maximum service life according to an embodiment of the present invention.

[0032] Figure label: 10. Coal chute; 100. Pipe body; 200. Prediction device; 1. Connector; 11. Fixing part; 12. Mounting part; 13. Second receiving cavity; 2. Prediction unit; 21. First receiving cavity; 22. Early warning body; 23. Grid frame; 3. Inspection door; 4. Fasteners; 5. Monitoring area; 6. Wear-resistant coating. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] like Figures 1 to 4 As shown, an embodiment of the present invention provides a coal chute wear prediction device 200, which includes a connector 1 and a prediction unit 2. The connector 1 is adapted to be connected to the body 100 of the coal chute 10. The prediction unit 2 is connected to one end of the connector 1 away from the body 100 of the coal chute 10. The prediction unit 2 has a first receiving cavity 21 for accommodating a warning body 22. The warning body 22 can overflow from the first receiving cavity 21 when the prediction unit 2 is damaged and a rupture opening is formed that connects to the first receiving cavity 21. The cross-sectional area of ​​the rupture opening is greater than the maximum cross-sectional area of ​​the warning body 22. There is at least one prediction unit 2 and it is arranged along its thickness direction. At least one parameter of the warning body 22 in any two prediction units 2 is different in terms of color, material, volume, and shape.

[0035] According to an embodiment of the present invention, the wear degree prediction device 200 for coal chutes can be installed on the outside of the body 100 of the coal chutes 10 by a connector 1, so as to establish a prediction mechanism for the wear degree of the coal chutes 10 through the prediction unit 2. After the wall surface of the body 100 where the prediction unit 2 is installed is worn through by the coal flow transported within it, the coal flow continues to scour the prediction unit 2. The prediction unit 2 can be destroyed when scourdled by the coal flow and gradually form a rupture opening communicating with the first receiving cavity 21. Because the cross-sectional area of ​​the rupture opening is larger than the cross-sectional area of ​​the warning body 22, Therefore, the warning body 22 can overflow from the rupture opening into the first receiving cavity 21 and then enter the inner cavity of the pipe body 100 and mix with the coal flow. The prediction unit 2 is at least one and arranged along its thickness direction. The parameter information of the warning body 22 in any two prediction units 2 is different. Therefore, based on the situation of the warning body 22 contained in the coal flow, the number of layers of the prediction unit 2 that have been worn through can be determined, so as to predict the wear degree of the coal drop pipe 10. Therefore, compared with related technologies, the present invention can establish a predictive maintenance mechanism for the coal drop pipe 10 based on condition monitoring. The overall structure is simple and the cost is low.

[0036] Specifically, the connector 1 may include a fixing part 11 and a mounting part 12 connected to each other. The fixing part 11 is adapted to be connected to the outer wall surface of the tube body 100, and the mounting part 12 is connected to the prediction unit 2. Furthermore, the fixing part 11 may be in contact with the outer wall surface of the tube body 100 to increase the contact area between the connector 1 and the tube body 100, thereby improving the connection reliability of the connector 1 on the tube body 100.

[0037] The thickness direction of the prediction unit 2 can be aligned with the wall thickness direction of the tube 100. The prediction unit 2 can be arranged on the outer wall surface of the tube 100 to form a covering structure for the outer wall surface of the tube 100. The first receiving cavity 21 is filled with the warning body 22 to form a warning body structural layer.

[0038] like Figures 1 to 4 As shown, in some embodiments, the prediction unit 2 includes a grid frame 23, which surrounds a first receiving cavity 21 and is capable of forming a rupture when the prediction unit 2 is damaged. The cross-sectional area of ​​the grid holes of the grid frame 23 is smaller than the maximum cross-sectional area of ​​the warning body 22 to prevent the warning body 22 from leaking from the grid holes.

[0039] Alternatively, the first receiving cavity 21 has a grid surface (not shown in the figure) that can form a rupture when the prediction unit 2 is destroyed, and the cross-sectional area of ​​the grid holes of the grid surface is smaller than the maximum cross-sectional area of ​​the warning body 22.

[0040] It is understandable that the grid frame 23 can be used to construct a supporting skeleton for the early warning body 22, so that the structural layer of the early warning body 22 can be reliably arranged on the outer side of the outer wall of the pipe body 100. After the wall of the pipe body 100 is worn through, the coal flow will continue to scour the prediction unit 2, destroy the connection between any two adjacent grid holes, until a rupture is formed on the prediction unit 2. The early warning body 22 enters the inner cavity of the pipe body 100 through the rupture and flows with the coal flow, so that maintenance personnel can judge the degree of wear of the pipe body 100 based on the condition of the early warning body 22 in the coal flow.

[0041] Meanwhile, the cross-sectional area of ​​the grid frame 23 or the grid holes on the grid surface is larger than the cross-sectional area of ​​the coal conveyed in the inner cavity of the pipe body 100, so that the coal in the coal flow can be filled into the first receiving cavity 21 through the grid holes, which can form a material-grinding material receiving method, indirectly improving the wear resistance of the coal drop pipe 10, directly improving the service life of key parts of the pipe body 100 under the scouring of the coal flow, improving the safety of equipment operation, making maintenance-free during the product life cycle, ensuring an effective extension of the overall service life of the coal drop pipe 10, reducing operation and maintenance costs, and ensuring the stability of the conveying system operation.

[0042] Specifically, based on the above structure, it can be seen that the mounting part 12 can be connected to the grid frame 23 so as not to damage the integrity of the structural layer of the warning body 22, thereby further improving the accuracy of the warning judgment. Each prediction unit 2 may include a grid frame 23. In this case, the inner cavity of the grid frame 23 forms a first receiving cavity 21, and the warning body 22 is filled in the first receiving cavity 21. Alternatively, the grid frame 23 of each prediction unit 2 may include multiple small grid frames 23. The multiple small grid frames 23 include multiple rows of small grid frames 23 arranged and connected along the extension direction of the outer wall surface of the pipe body 100 (or the length direction of the grid frame 23). Each row of small grid frames 23 includes multiple small grid frames 23 arranged and connected along the circumferential direction of the outer wall surface of the pipe body 100 (or the width direction of the grid frame 23). The inner cavity of each small grid frame 23 is filled with the warning body 22. The inner cavities of all small grid frames 23 together form the first receiving cavity 21. The structure of multiple small grid frames 23 can quickly match the corresponding number of small grid frames 23 according to the specifications of the pipe body 100 to form the entire grid frame 23, which is conducive to realizing the expansion of the grid frame 23 to adapt to the monitoring needs of pipe bodies 100 of different specifications.

[0043] The grid surface is suitable for being arranged facing the outer wall of the pipe body 100 so that the grid surface can directly face the coal flow. Therefore, compared with the wall without grid holes, the wall with grid holes is more likely to be damaged by the scouring action of the coal flow so that the warning body 22 overflows from the first receiving cavity 21, thereby improving the timeliness of the warning.

[0044] like Figure 4 As shown, in some embodiments, the warning body 22 is a foam ball, and the foam balls in any two prediction units 2 are of different colors.

[0045] It is understandable that designing the warning body 22 as a foam ball can enable the prediction unit 2 to have shock absorption function, and at the same time reduce the noise generated by the coal flow impact. Furthermore, the different colors of the foam balls in any two prediction units 2 are beneficial for quickly judging the wear degree of the pipe body 100 based on the color of the foam balls mixed in the coal flow.

[0046] In addition, foam balls are lightweight and do not increase the burden of subsequent conveying power. They also float on the surface of the coal flow for easy identification by maintenance personnel. Foam balls are also easy to degrade during the later utilization of coal powder, so they will not cause a processing burden. At the same time, they are low in cost.

[0047] For example, as shown in the figure, there can be three prediction units 2 arranged from the inside to the outside on the outer side of the outer wall of the pipe body 100. The first receiving cavity 21 of the prediction unit 2 closest to the outer wall of the pipe body 100 can be filled with yellow foam balls, the first receiving cavity 21 of the middle prediction unit 2 can be filled with blue foam balls, and the first receiving cavity 21 of the outermost prediction unit 2 can be filled with red foam balls. When blue foam balls or red foam balls appear in the coal flow, the maintenance personnel need to repair the pipe body 100 as soon as possible to prevent coal powder leakage accidents.

[0048] like Figure 1 As shown, in some embodiments, all prediction units 2 are detachably connected to one end of the connector 1 away from the pipe body 100 of the coal chute 10. In other words, each prediction unit 2 is detachably connected to the connector 1 independently. This facilitates the replacement of damaged parts in the later stage, ensuring the service life of the prediction device 200. It also facilitates the adjustment of the number of prediction units 2 according to the conveying requirements of the coal chute 10, thereby improving the structural flexibility of the prediction device 200.

[0049] Specifically, in conjunction with the above structure, that is, each prediction unit 2's grid frame 23 is individually and detachably connected to the mounting part 12 of the connector 1.

[0050] like Figure 4 As shown, in some embodiments, the connector 1 has an open second receiving cavity 13, all prediction units 2 are disposed in the second receiving cavity 13, and the prediction device 200 also includes a maintenance door 3, which is connected to the connector 1 to cover the opening of the second receiving cavity 13, so that the prediction unit 2 can be disassembled and replaced through the maintenance door 3, and the damaged parts of the tube body 100 can be repaired, making maintenance and operation convenient.

[0051] Specifically, based on the above structure, the mounting portion 12 of the connector 1 is provided with a second receiving cavity 13. The second receiving cavity 13 has openings at both ends corresponding to the wall thickness direction of the pipe body 100. One end of the opening is covered by the inspection door 3, and the other end is covered by the outer wall surface of the pipe body 100, that is, the other end of the opening corresponds directly to the outer wall surface of the pipe body 100. For example, as shown in the figure, the connector 1 can be made of steel plates spliced ​​together. The fixing portion 11 includes four steel plates connected end to end in sequence, and the connecting portion also includes four steel plates connected end to end in sequence. The fixing portion 11 and the connecting portion are arranged sequentially on the outer side of the outer wall surface of the pipe body 100 along the wall thickness direction. The inspection door 3 can be rotatably connected to the mounting portion 12 to facilitate the opening and closing of the inspection door 3.

[0052] like Figures 1 to 4As shown, in some embodiments, the prediction device 200 further includes a fastener 4. The connector 1 has a through hole (not shown) extending through the connector 1 along its wall thickness direction. One end of the fastener 4 passes through the through hole and is connected to the prediction unit 2, so as to achieve a fast connection between the connector 1 and the prediction unit 2 through the fastener 4.

[0053] Specifically, based on the above structure, the mounting part 12 is provided with a through hole extending through the mounting part 12 along its wall thickness direction, and the wall thickness direction of the mounting part 12 is consistent with the thickness direction of the steel plate. The fastener 4 can be a component that can achieve fastening performance, such as a bolt, screw, or stud.

[0054] In addition, connector 1, grille frame 23, and access door 3 can all be made of Q235B steel. Fastener 4 can be a stainless steel component.

[0055] Therefore, compared with related technologies, the present invention has the following advantages: 1) The internal composite multi-layer grid frame 23 (or having a grid surface) of the present invention, after the pipe body 100 of the coal drop pipe 10 is ground through, will cause the coal material conveyed in the pipe body 100 to first fill into the grid frame 23, forming a material-grinding material receiving method, which can directly improve the service life of key parts of the pipe body 100 that are eroded by the coal flow, improve the safety of equipment operation and have shock absorption function, thereby making the product (i.e., the coal drop pipe 10) maintenance-free during its life cycle, ensuring an effective extension of the overall service life of the coal drop pipe 10, reducing operation and maintenance costs, ensuring the stability of the conveying system operation, and also reducing the noise generated by the coal flow impact; 2) In the composite multi-layer grid frame 23, yellow foam balls, blue foam balls and red foam balls can be set from the inside to the outside. When the pipe body 100 of the coal chute 10 is worn through, the wear degree of the coal chute 10 can be judged according to the color of the leaking foam balls during the coal flow transportation process, which is convenient for maintenance personnel to predict the wear condition of the coal chute 10. 3) The internal grid frame 23 of this invention is fixed in layers. When blue foam balls or red foam balls leak, the grid frame 23 can be directly disassembled and replaced through the outer inspection door 3, and the pipe body 100 of the coal drop pipe 10 can be repaired, which improves the convenience of maintenance work. 4) The product of this invention has a simple structure, extremely low manufacturing cost, and quick installation.

[0056] like Figure 4As shown, a coal chute 10 according to an embodiment of the present invention includes a pipe body 100 and a prediction device 200. The outer wall surface of the pipe body 100 includes a monitoring surface 5. The prediction device 200 is the prediction device 200 of any of the above embodiments. The connector 1 of the prediction device 200 is connected to the pipe body 100. The prediction unit 2 of the prediction device 200 is located outside the monitoring surface 5 and is arranged along the wall thickness direction of the pipe body 100 with the monitoring surface 5. The wall thickness direction of the pipe body 100 is consistent with the thickness direction of the prediction unit 2. The prediction device 200 can completely cover the monitoring surface 5 to prevent the leakage of coal transported by the pipe body 100. That is, the structure formed by the connector 1 and the prediction unit 2 covers or covers the monitoring surface 5.

[0057] According to the coal chute 10 of the present invention, the prediction device 200 is designed such that after the monitoring surface 5 of the pipe body 100 is worn through by the coal flow transported therein, the coal flow will continue to scour the prediction unit 2, causing a rupture overflow warning body 22 to form on the prediction unit 2. Therefore, the number of layers worn through the prediction unit 2 can be determined based on the presence of the warning body 22 in the coal flow, thereby predicting the degree of wear of the coal chute 10. The prediction method is highly operable and the prediction results are accurate. Therefore, compared with related technologies, the coal chute 10 using this prediction device 200 can achieve real-time and effective monitoring of the thickness of the coal chute 10 without changing its own structure by externally installing the prediction device 200. The operation and maintenance costs are low, ensuring the safe and economical operation of the coal-fired power generation system.

[0058] It should be noted that the monitoring surface 5 can be a key part of the pipe body 100 (such as a bend, a weak area of ​​the pipe body 100 wall thickness, etc.) or the entire outer wall surface of the pipe body 100. The specific method can be determined based on actual production, considering equipment structure and operating conditions, etc., which will not be elaborated here.

[0059] like Figure 4 As shown, in some embodiments, the inner wall surface of the pipe body 100 is provided with a wear-resistant coating 6, or the pipe body 100 is a wear-resistant pipe, so as to improve the wear resistance of the coal chute 10, further optimize the maintenance-free nature of the coal chute 10 during its life cycle, reduce operation and maintenance costs, and ensure the stability of the conveying system operation.

[0060] like Figure 5 As shown, an embodiment of the present invention provides a method for predicting the wear degree of a coal chute, based on the coal chute 10 of any of the above embodiments. The prediction method includes the following steps: Step S1, Preparation: Install the prediction device 200 on the outside of the pipe body 100 of the coal chutes 10 to block the monitoring surface 5 of the pipe body 100. Step S2, coal conveying: coal is conveyed by the pipe body 100. The coal flow in the inner cavity of the pipe body 100 washes the monitoring surface 5. After the monitoring surface 5 is worn through, the coal flow continues to wash the prediction unit 2 of the prediction device 200 until a rupture is formed on the prediction unit 2. The early warning body 22 of the prediction unit 2 enters the inner cavity of the pipe body 100 through the rupture and mixes with the coal flow. Step S3: Predict the degree of wear. Based on the presence of the warning body 22 in the coal flow, determine the degree of wear of the pipe body 100.

[0061] The technical advantages of the method for predicting the wear degree of the coal chute according to the embodiments of the present invention are the same as the technical advantages of the coal chute 10 described above, and will not be repeated here.

[0062] like Figure 6 As shown, in some embodiments, the specific steps of the coal conveying operation are as follows: Step S21: Coal is transported by pipe body 100, and the coal flow washes over monitoring surface 5; In step S22, after the monitoring surface 5 is ground through, the coal material is filled into the first receiving cavity 21 through the grid holes of the prediction unit 2 to buffer the scouring force of the coal flow. In step S23, the coal flow continues to scour the prediction unit 2, destroying the connection between any two adjacent grid holes until a rupture is formed. The warning body 22 enters the inner cavity of the pipe body 100 through the rupture and mixes with the coal flow.

[0063] like Figure 5 As shown, in some embodiments, after the wear prediction operation, the prediction method further includes the step of: Step S4, Inspection: Open the inspection door 3, disassemble and replace the prediction unit 2, and repair the monitoring surface 5.

[0064] Example 1 A method for predicting the wear degree of a coal chute, based on the aforementioned coal chute, includes the following steps: 1) Coal flow enters the inner cavity of the coal chute, directly impacting the wear-resistant coating. After the wear-resistant coating wears down, it directly erodes the body of the coal chute. Figure 7 As shown; 2) When holes appear in the coal chute, coal fills the closed grid frame, forming a material-grinding process that directly extends the service life of critical parts eroded by the coal flow. The appearance of yellow foam balls at this time indicates wear on the coal chute. Figure 8 As shown; 3) When blue or red foam balls appear, it indicates that the coal chute has reached its maximum service life and the grating frame needs to be replaced. Figure 9 As shown.

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for predicting the wear degree of a coal chute, characterized in that, include: A connector adapted to be connected to the body of the coal chute; The prediction unit is connected to one end of the connector away from the coal chute. The prediction unit has a first receiving cavity for accommodating the warning body. The warning body can overflow from the first receiving cavity when the prediction unit is damaged, forming a rupture that connects to the first receiving cavity. The cross-sectional area of ​​the rupture is greater than the maximum cross-sectional area of ​​the warning body. There is at least one prediction unit arranged along its thickness direction. At least one parameter of the warning body in any two prediction units is different in terms of color, material, volume, and shape.

2. The coal chute wear prediction device according to claim 1, characterized in that, The prediction unit includes a grid frame, which surrounds the first receiving cavity and is capable of forming the rupture opening when the prediction unit is destroyed. The cross-sectional area of ​​the grid holes in the grid frame is smaller than the maximum cross-sectional area of ​​the warning body. or, The first receiving cavity has a grid surface that can form the rupture when the prediction unit is damaged, and the cross-sectional area of ​​the grid holes of the grid surface is smaller than the maximum cross-sectional area of ​​the warning body.

3. The coal chute wear prediction device according to claim 1, characterized in that, The warning element is a foam ball, and the foam balls in any two prediction units are of different colors.

4. The coal chute wear prediction device according to claim 1, characterized in that, Each of the aforementioned prediction units is detachably connected to one end of the connector that faces away from the coal chute.

5. The coal chute wear prediction device according to any one of claims 1-4, characterized in that, The connector has an open second receiving cavity in which all the prediction units are located. The prediction device also includes an inspection door connected to the connector to cover the opening of the second receiving cavity.

6. The coal chute wear prediction device according to claim 5, characterized in that, It also includes a fastener, wherein the connector has a through hole extending through the connector along its wall thickness direction, and one end of the fastener passes through the through hole and is connected to the prediction unit.

7. A coal chute, characterized in that, include: The tube body, wherein the outer wall surface of the tube body includes a monitoring surface; A prediction device, wherein the prediction device is any one of claims 1-6, the connector of the prediction device is connected to the pipe body, the prediction unit of the prediction device is located outside the monitoring surface and is arranged along the wall thickness direction of the pipe body with the monitoring surface, the wall thickness direction of the pipe body is consistent with the thickness direction of the prediction unit, and the prediction device can completely block the monitoring surface to prevent leakage of coal transported by the pipe body.

8. A method for predicting the wear degree of a coal chute, based on the coal chute as described in claim 7, characterized in that, The prediction method Includes the following steps: Preparation: Install the prediction device on the outside of the coal chute to block the monitoring surface of the chute. Coal is conveyed through the pipe body. The coal flow inside the pipe body washes over the monitoring surface. After the monitoring surface is worn through, the coal flow continues to wash over the prediction unit of the prediction device until a rupture is formed on the prediction unit. The warning body of the prediction unit enters the inner cavity of the pipe body through the rupture and mixes with the coal flow. The wear level is predicted based on the presence of the warning body in the coal flow, and the wear level of the pipe is determined.

9. The method for predicting the wear degree of a coal chute according to claim 8, characterized in that, The specific steps of the coal conveying operation are as follows: The coal is transported through the pipe, and the coal flow washes over the monitoring surface; After the monitoring surface is ground through, the coal material is filled into the first receiving cavity through the grid holes of the prediction unit to buffer the scouring force of the coal flow; The coal flow continues to scour the prediction unit, destroying the connection between any two adjacent grid holes until the rupture is formed. The warning body enters the inner cavity of the pipe through the rupture and mixes with the coal flow.

10. The method for predicting the wear degree of a coal chute according to claim 8 or 9, characterized in that, Following the wear prediction operation, the prediction method further includes the step of: For inspection, open the inspection door, disassemble and replace the prediction unit, and repair the monitoring surface.

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