Coal pipe wind speed measuring blowout preventer and pipe assembly

Abstract

The utility model discloses a kind of coal powder pipeline wind speed measurement blowout preventer and pipeline assembly, for measuring the wind speed in the coal powder pipeline of pipeline assembly, the ball valve pipeline with the communication of coal powder pipeline is on coal powder pipeline peripheral wall, coal powder pipeline wind speed measurement blowout preventer includes: speed measuring component, speed measuring component includes: backrest pipe and sealing element, one end of backrest pipe is suitable for being arranged in ball valve pipeline and extends into coal powder pipeline, the other end is arranged in ball valve pipeline outside and is connected with pressure measuring equipment, sealing element is sleeved on the outside of backrest pipe, sealing element is located in the side of ball valve pipeline deviating from coal powder pipeline, sealing element is used for the sealing between coal powder pipeline and backrest pipe, sealing element is detachably connected with coal powder pipeline by adapter. According to the coal powder pipeline wind speed measurement blowout preventer of the utility model, prevent coal powder from being injected from the gap between ball valve pipeline and backrest pipe, reduce the waste of coal powder, reduce production cost, reduce pollution to working environment and harm to personnel;Adapter is used in cooperation to realize multi-size, multi-scene application, increase the versatility of the equipment, improve the test efficiency of staff.

Description

Technical Field

[0001] This utility model relates to the field of coal powder pipeline wind speed measurement technology, and in particular to a coal powder pipeline wind speed measurement anti-blowout device and pipeline assembly. Background Technology

[0002] Currently, when measuring wind speed, commonly used measuring tools, such as back-mounted tubes, need to be inserted into the pulverized coal pipe through a ball valve. However, due to the pressure inside the pulverized coal pipe, pulverized coal can easily be ejected from the gap between the measuring tool and the ball valve. This not only wastes pulverized coal and increases production costs, but also causes serious pollution to the working environment and even threatens the health and safety of operators. Furthermore, the pipe sizes for wind speed measuring points in pulverized coal pipes vary from plant to plant, resulting in low work efficiency for testing personnel. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a coal powder pipeline wind speed measurement and anti-spray device. This device effectively prevents coal powder from being ejected from the gap between the ball valve pipeline and the backing pipe, thereby reducing coal powder waste, lowering production costs, reducing pollution to the working environment, and minimizing harm to personnel. Furthermore, by using an adapter, it can be used in multiple sizes and scenarios, increasing the versatility of the device and improving the efficiency of testing for workers.

[0004] This utility model also proposes a pipeline assembly, including the above-mentioned coal powder pipeline wind speed measurement and anti-blowout device.

[0005] According to an embodiment of the present invention, a pulverized coal pipeline wind speed measurement and blowout prevention device is used to measure the wind speed in a pulverized coal pipeline of a pipeline assembly. The pulverized coal pipeline has a ball valve pipeline communicating with it on its peripheral wall. The pulverized coal pipeline wind speed measurement and blowout prevention device includes: a speed measuring component, which includes: a backing tube and a sealing element. One end of the backing tube is adapted to pass through the ball valve pipeline and extend into the pulverized coal pipeline, and the other end is located outside the ball valve pipeline and adapted to be connected to a pressure measuring device. The sealing element is sleeved on the backing tube and is movable relative to the backing tube along the length direction of the backing tube. The sealing element is located on the side of the ball valve pipeline away from the pulverized coal pipeline and is used for sealing between the pulverized coal pipeline and the backing tube. An adapter is also included, and the sealing element is adapted to be detachably connected to the pulverized coal pipeline through the adapter.

[0006] According to an embodiment of this utility model, a pulverized coal pipeline wind speed measurement anti-spray device has one end of a backing tube adapted to pass through a ball valve pipeline and extend into the pulverized coal pipeline, and the other end located outside the ball valve pipeline and connected to a pressure measuring device. A sealing element is sleeved on the outside of the backing tube and is movable relative to the backing tube along its length. The sealing element is located on the side of the ball valve pipeline away from the pulverized coal pipeline. The sealing element is used for sealing between the pulverized coal pipeline and the backing tube. The sealing element is adapted for detachable connection with the pulverized coal pipeline. The setting of the sealing element can form a good sealing structure, effectively preventing pulverized coal from being sprayed from the gap between the ball valve pipeline and the backing tube, thereby reducing pulverized coal waste, reducing production costs, reducing pollution to the working environment and harm to personnel. When used with an adapter, it can achieve multi-size and multi-scenario applications, increasing the versatility of the device and improving the testing efficiency of the staff.

[0007] In some embodiments of this utility model, the adapter is sleeved outside the sealing element and located at the end of the ball valve pipe opposite to the pulverized coal pipe. The adapter includes a first adapter portion and a second adapter portion. The second adapter portion is located at the end of the first adapter portion opposite to the pulverized coal pipe and is connected to the first adapter portion. The first adapter portion is adapted to be detachably connected to the ball valve pipe, and the second adapter portion is adapted to be detachably connected to the sealing element. The inner diameters of the first adapter portion and the second adapter portion are different.

[0008] In some embodiments of this utility model, the first adapter and the second adapter are detachably connected.

[0009] In some embodiments of this utility model, the first adapter is adapted to be threadedly connected to the ball valve pipeline, and the second adapter is adapted to be threadedly connected to the sealing element.

[0010] In some embodiments of this utility model, the first adapter includes multiple first sub-adapters arranged and connected along the length of the first adapter, and the ball valve pipe is adapted to be connected to one of the first sub-adapters. In the direction from the first adapter to the second adapter, the inner diameter of the multiple first sub-adapters increases or decreases sequentially.

[0011] In some embodiments of the present invention, the second adapter includes multiple second sub-adapter sections arranged and connected along the length of the second adapter, and the sealing element is adapted to connect with one of the second sub-adapter sections. In the direction from the first adapter to the second adapter, the inner diameters of the multiple second sub-adapter sections increase sequentially.

[0012] In some embodiments of this utility model, the speed measuring component includes: a backrest tube, one end of which is adapted to pass through the ball valve pipe and extend into the pulverized coal pipe, and the other end is disposed outside the ball valve pipe; a sealing element, which is sleeved outside the backrest tube and is movable relative to the backrest tube along the length direction of the backrest tube, the sealing element is disposed on the side of the ball valve pipe away from the pulverized coal pipe, and the sealing element is adapted to be detachably connected to the second adapter.

[0013] In some embodiments of this utility model, the speed measuring component further includes a cylindrical sleeve, which is disposed between the sealing element and the backrest tube and connected to the backrest tube.

[0014] In some embodiments of this utility model, a sealing ring is provided between the cylindrical sleeve and the sealing element.

[0015] In some embodiments of this utility model, the outer peripheral wall of the cylindrical sleeve has a scale layer for measuring the distance the backrest tube moves.

[0016] A pipeline assembly according to an embodiment of the present invention includes: a pulverized coal pipeline, wherein a ball valve pipeline communicating with the pulverized coal pipeline is provided on the peripheral wall of the pulverized coal pipeline; the aforementioned pulverized coal pipeline wind speed measuring and blowout prevention device, wherein the pulverized coal pipeline wind speed measuring and blowout prevention device is connected to the ball valve pipeline and is used to measure the wind speed in the pulverized coal pipeline of the pipeline assembly; and a pulverized coal ball valve, wherein the pulverized coal ball valve is disposed in the pulverized coal pipeline and is used to control the on / off state of the pulverized coal pipeline.

[0017] According to the pipeline assembly of this utility model embodiment, by setting the above-mentioned coal powder pipeline wind speed measurement anti-spray device, one end of the backing pipe is adapted to pass through the ball valve pipeline and extend into the coal powder pipeline, and the other end is set outside the ball valve pipeline and connected to the pressure measuring equipment; the sealing element is sleeved on the backing pipe and is movable relative to the backing pipe along the length direction of the backing pipe. The sealing element is set on the side of the ball valve pipeline away from the coal powder pipeline. The sealing element is used for sealing between the coal powder pipeline and the backing pipe. The sealing element is adapted to be detachably connected to the coal powder pipeline. The setting of the sealing element can form a good sealing structure, effectively preventing coal powder from being sprayed from the gap between the ball valve pipeline and the backing pipe, thereby reducing coal powder waste, reducing production costs, reducing pollution to the working environment and harm to personnel. When used with an adapter, it can realize multi-size and multi-scenario applications, increasing the versatility of the equipment and improving the testing efficiency of the staff.

[0018] Additional aspects and advantages of this 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

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a front view of the pulverized coal pipeline wind speed measurement and blowout prevention device according to an embodiment of the present utility model, wherein the adapter is not shown; Figure 2 This is a front sectional view of the sealing element of the velocity measuring component of the pulverized coal pipeline wind speed measuring and blowout prevention device according to an embodiment of the present utility model; Figure 3 This is a front view of the adapter of the pulverized coal pipeline wind speed measurement and blowout prevention device according to an embodiment of the present utility model, wherein the first adapter and the second adapter are straight sections; Figure 4 This is a front view of the adapter of the pulverized coal pipeline wind speed measurement and blowout prevention device according to an embodiment of the present utility model, wherein both the first adapter and the second adapter are multi-segmented. Figure 5 This is a partial enlarged view of a pulverized coal pipeline according to an embodiment of the present utility model.

[0020] Figure label: 10. Pulverized coal pipeline wind speed measurement and blowout prevention device; 1. Speed ​​measuring component; 11. Backrest tube; 12. Sealing element; 13. Cylindrical sleeve; 131. Scale layer; 14. Sealing ring; 2. Adapter; 21. First adapter section; 211. First sub-adapter section; 22. Second adapter section; 221. Second sub-adapter section; 20. Pulverized coal pipeline; 30. Ball valve pipeline; 40. Air-powder ball valve. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The following is for reference. Figures 1-5 Description of a pulverized coal pipeline wind speed measurement and blowout prevention device 10 according to an embodiment of the present invention.

[0024] like Figures 1-5 As shown, the pulverized coal pipeline wind speed measurement and blowout prevention device 10 according to an embodiment of the present utility model includes: a speed measuring component 1 and an adapter 2.

[0025] Specifically, refer to Figures 1-5 The pulverized coal pipeline wind speed measurement and blowout prevention device 10 is used to measure the wind speed in the pulverized coal pipeline 20 of the pipeline assembly. The pulverized coal pipeline 20 has a ball valve pipeline 30 on its peripheral wall that is connected to the pulverized coal pipeline 20.

[0026] Furthermore, such as Figures 1-2 As shown, the speed measuring component 1 includes a backrest tube 11 and a sealing element 12. One end of the backrest tube 11 is adapted to pass through the ball valve pipe 30 and extend into the pulverized coal pipe 20, and the other end is located outside the ball valve pipe 30. The sealing element 12 is sleeved on the backrest tube 11 and is movable relative to the backrest tube 11 along the length direction of the backrest tube 11. The sealing element 12 is located on the side of the ball valve pipe 30 away from the pulverized coal pipe 20. The sealing element 12 is used for sealing between the pulverized coal pipe 20 and the backrest tube 11.

[0027] It should be noted that the end of the back-side tube 11 facing away from the pulverized coal pipeline 20 is connected to a differential pressure transmitter to measure the difference between total pressure and static pressure. When the back-side tube 11 is inserted into the pulverized coal pipeline 20 where airflow is present, the windward side is impacted by the airflow. At this point, the kinetic energy of the airflow is converted into pressure energy, resulting in a higher pressure inside the tube on the windward side, which is called the "total pressure." The leeward side, unaffected by the airflow, experiences static pressure, also known as "static pressure." The difference between total pressure and static pressure is the dynamic pressure, which is closely related to the wind speed inside the pipe. Higher wind speeds result in higher dynamic pressure, and lower wind speeds result in lower dynamic pressure. By measuring the dynamic pressure and using a pre-calibrated relationship between dynamic pressure and wind speed, the wind speed inside the pipe can be accurately calculated. The back-side tube 11 is made of high-strength, wear-resistant metal, such as 304 stainless steel. This material can withstand the erosion of pulverized coal and the complex working environment inside the pipeline, ensuring long-term stable measurement performance. Its shape has been optimized, for example, by adopting a streamlined head design to reduce interference with airflow and improve measurement accuracy.

[0028] In addition, according to the formula (equation) v is the wind speed, and k is the speed coefficient of the back tube 11. To measure differential pressure, Calculate the wind speed using the density of the airflow (air powder).

[0029] Understandably, the sealing element 12 can form a good sealing structure, effectively preventing coal dust from being sprayed from the gap between the ball valve pipe 30 and the backing pipe 11, thereby reducing coal dust waste, lowering production costs, and reducing pollution to the working environment and harm to personnel.

[0030] Furthermore, the sealing element 12 is movable relative to the backrest tube 11 along the length of the backrest tube 11, and the sealing element 12 is fixed relative to the pulverized coal pipe 20, so that the backrest tube 11 can be moved and adjusted to achieve control of the insertion depth of the backrest tube 11 into the pulverized coal pipe 20 (if it is necessary to measure the wind speed at the center of the pipe, the insertion depth into the pulverized coal pipe 20 is the radius value of the pulverized coal pipe 20).

[0031] Additionally, the backrest tube 11 is pre-inserted into the sealing element 12 for sealing connection, and the sealing element 12 is then connected to the ball valve pipeline 30; at this time, the air-powder ball valve 40 in the ball valve pipeline 30 is opened. The backrest tube 11 passes through the ball valve pipeline 30 and enters the pulverized coal pipeline 20, performing multi-point sampling by moving back and forth. Due to the function of the sealing element 12, it can prevent pulverized coal from being ejected outward from the ball valve pipeline 30. After the test, the backrest tube 11 is pulled out, with the front end of the backrest tube 11 leaving the air-powder ball valve 40 of the ball valve pipeline 30, but the sealing element 12 remains stationary, and the backrest tube 11 is not completely pulled out. At this time, the sealing element 12 still functions, preventing pulverized coal from being ejected outward from the ball valve pipeline 30. At this time, after the air-powder ball valve 40 is closed, both the backrest tube 11 and the sealing element 12 can be pulled out of the ball valve pipeline 30, realizing the removal of the speed measuring component 1 from the ball valve pipeline 30, and completing the testing process.

[0032] Furthermore, such as Figures 1-5 As shown, the sealing element 12 is suitable for detachable connection with the pulverized coal pipeline 20 via the adapter 2. When used with the adapter 2, it enables universal connection between ball valve pipelines 30 of different sizes and the sealing element 12, without the need to replace the sealing element 12 of the corresponding size, thus improving the versatility of the pulverized coal pipeline wind speed measurement anti-blowout device 10.

[0033] According to the embodiment of this utility model, the pulverized coal pipeline wind speed measurement anti-spray device 10 has one end of the backing tube 11 adapted to pass through the ball valve pipeline 30 and extend into the pulverized coal pipeline 20, and the other end is located outside the ball valve pipeline 30; the sealing element 12 is sleeved outside the backing tube 11 and is movable relative to the backing tube 11 along the length direction of the backing tube 11. The sealing element 12 is located on the side of the ball valve pipeline 30 away from the pulverized coal pipeline 20. The sealing element 12 is used for sealing between the pulverized coal pipeline 20 and the backing tube 11. The sealing element 12 is adapted to be detachably connected to the pulverized coal pipeline 20. The setting of the sealing element 12 can form a good sealing structure, effectively preventing pulverized coal from being sprayed from the gap between the ball valve pipeline 30 and the backing tube 11, thereby reducing pulverized coal waste, reducing production costs, reducing pollution to the working environment and harm to personnel. When used with the adapter 2, it can realize multi-size and multi-scenario applications, increasing the versatility of the device and improving the testing efficiency of the staff.

[0034] In some embodiments of this utility model, such as Figures 1-5 As shown, the adapter 2 is sleeved outside the sealing element 12 and is located at the end of the ball valve pipe 30 away from the pulverized coal pipe 20.

[0035] The adapter 2 includes a first adapter part 21 and a second adapter part 22. The second adapter part 22 is located at the end of the first adapter part 21 that is away from the pulverized coal pipeline 20 and is connected to the first adapter part 21. The first adapter part 21 is adapted to be detachably connected to the ball valve pipeline 30, and the second adapter part 22 is adapted to be detachably connected to the sealing element 12. The inner diameters of the first adapter part 21 and the second adapter part 22 are different.

[0036] It is understandable that when the diameters of the ball valve pipe 30 and the sealing element 12 match, the adapter 2 is not required, and the ball valve pipe 30 and the sealing element 12 are directly connected. However, when the diameters of the ball valve pipe 30 and the sealing element 12 do not match, for example, in this invention, the orifice diameter of the ball valve pipe 30 is smaller than that of the sealing element 12, the first adapter part 21 of the adapter 2 is detachably connected to the ball valve pipe 30, and the second adapter part 22 is detachably connected to the sealing element 12. This achieves a universal connection between ball valve pipes 30 and sealing elements 12 of different sizes, eliminating the need to replace the sealing element 12 with one of the corresponding size, and improving the versatility of the pulverized coal pipeline wind speed measurement and blowout prevention device 10.

[0037] It should be noted that the first adapter 21 is sealed to the ball valve pipe 30, and the second adapter 22 is sealed to the sealing element 12, thereby further preventing coal dust from being sprayed from the gap between the ball valve pipe 30 and the backing pipe 11, thus reducing coal dust waste, lowering production costs, and reducing pollution to the working environment and harm to personnel.

[0038] In some embodiments of this utility model, the first adapter 21 and the second adapter 22 are detachably connected. Specifically, the first adapter 21 and the second adapter 22 can be detachably connected via threaded connection or snap-fit, etc. Therefore, the first adapter 21 and the second adapter 22 can be arbitrarily combined, further realizing a universal connection between ball valve pipes 30 and sealing elements 12 of different sizes, and further improving the versatility of the pulverized coal pipeline wind speed measurement and blowout prevention device 10.

[0039] In some embodiments of this utility model, such as Figure 1 , Figures 3-5As shown, the first adapter 21 is adapted to be threadedly connected to the ball valve pipe 30, and the second adapter 22 is adapted to be threadedly connected to the speed measuring component 1. This achieves a detachable connection between the first adapter 21 and the ball valve pipe 30, and a detachable connection between the second adapter 22 and the sealing element 12. Simultaneously, the inclined surface of the thread causes radial displacement of the connecting parts, generating radial pressure. This pressure deforms the vertical surfaces between the connecting parts, thus achieving a sealed connection between the first adapter 21 and the ball valve pipe 30, and a sealed connection between the second adapter 22 and the sealing element 12. This further prevents coal dust from being ejected from the gap between the ball valve pipe 30 and the backing pipe 11, thereby reducing coal dust waste, lowering production costs, reducing pollution to the working environment and harm to personnel; it also increases the versatility of the equipment and improves the efficiency of the workers' testing.

[0040] It should be noted that, in this utility model, such as Figure 1 , Figures 3-5 As shown, the first adapter 21 has an external thread, the ball valve pipe 30 has an internal thread that mates with the external thread of the first adapter 21, the second adapter 22 has an internal thread, and the sealing element 12 has an external thread that mates with the internal thread of the second adapter 22. However, this invention is not limited to this; it is also possible that the first adapter 21 has an internal thread, and the ball valve pipe 30 has an internal thread that mates with the external thread of the first adapter 21.

[0041] Since the second adapter 22 is sleeved outside the sealing element 12, the second adapter 22 can only have an internal thread, and the sealing element 12 can only have an external thread that matches the internal thread of the second adapter 22.

[0042] In some embodiments of this utility model, such as Figure 4 As shown, the first adapter 21 includes multiple first sub-adapters 211 arranged and connected along the length of the first adapter 21. The ball valve pipe 30 is adapted to connect to one of the first sub-adapters 211. In the direction from the first adapter 21 to the second adapter 22, the inner diameter of the multiple first sub-adapters 211 increases or decreases sequentially.

[0043] Understandably, by setting multiple first sub-transfer parts 211 with different inner diameters, the ball valve pipe 30 is adapted to be connected to one of the first sub-transfer parts 211, so that one first transfer part 21 can be adapted to connect different ball valve pipes 30, thereby further realizing the universal connection between ball valve pipes 30 of different sizes and speed measuring components 1, and further improving the versatility of the pulverized coal pipeline wind speed measurement anti-blowout device 10.

[0044] It should be noted that, for example Figure 4 and Figure 5As shown, when the first sub-transfer part 211 has an external thread and the ball valve pipe 30 has an internal thread that mates with the external thread of the first sub-transfer part 211, the inner diameter of multiple segments of the first sub-transfer part 211 increases sequentially in the direction from the first transfer part 21 to the second transfer part 22, thereby avoiding installation interference between the first transfer part 21 and the ball valve pipe 30.

[0045] When the first sub-transfer part 211 has an internal thread and the ball valve pipe 30 has an external thread that mates with the internal thread of the first sub-transfer part 211, the inner diameter of multiple sections of the first sub-transfer part 211 decreases sequentially in the direction from the first transfer part 21 to the second transfer part 22, thereby avoiding installation interference between the first transfer part 21 and the ball valve pipe 30.

[0046] In some embodiments of this utility model, such as Figure 4 As shown, the second adapter 22 includes multiple second sub-adapter sections 221 arranged and connected along the length of the second adapter 22. The sealing element 12 is adapted to connect with one of the second sub-adapter sections 221. In the direction from the first adapter 21 to the second adapter 22, the inner diameter of the multiple second sub-adapter sections 221 increases sequentially.

[0047] It is understandable that by setting multiple second sub-transfer parts 221 with different inner diameters, the sealing element 12 is adapted to be connected to one of the second sub-transfer parts 221, so that one second transfer part 22 can be adapted to connect different sealing elements 12, thereby further realizing the universal connection between ball valve pipes 30 of different sizes and sealing elements 12, and further improving the versatility of the pulverized coal pipeline wind speed measurement anti-blowout device 10.

[0048] It should be noted that, for example Figure 4 and Figure 5 As shown, since the second sub-adapter 221 has an internal thread and the sealing element 12 has an external thread that mates with the internal thread of the second sub-adapter 221, the inner diameter of the multiple segments of the second sub-adapter 221 increases sequentially in the direction from the first adapter 21 to the second adapter 22, thereby avoiding installation interference between the second adapter 22 and the sealing element 12.

[0049] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the speed measuring component 1 also includes a cylindrical sleeve 13, which is disposed between the sealing element 12 and the backrest tube 11 and is connected to the backrest tube 11.

[0050] It is understandable that the backrest tube 11 is formed by connecting two circular tubes along the radial direction of the backrest tube 11. The cross-sectional geometry of the backrest tube 11 is irregular. Due to the high pressure of the pulverized coal pipeline 20, an effective seal cannot be formed between the irregularly cross-section backrest tube 11 and the pulverized coal pipeline 20. However, in this utility model, a cylindrical sleeve 13 is firmly welded to the outside of the backrest tube 11. Compared with the irregular geometric contour of the backrest tube 11, the cylindrical structure of the cylindrical sleeve 13, due to its continuous rotationally symmetric curved surface, can significantly reduce the geometric inconsistency of the sealing interface. Its constant radius of curvature provides a uniform contact stress distribution for the sealing element 12, avoiding local stress concentration and abrupt changes in sealing gap that are prone to occur with irregular contours, thereby effectively improving the reliability of the sealing system.

[0051] Meanwhile, the cylindrical sleeve 13 provides some protection for the backrest tube 11, enhancing its structural strength and preventing deformation during insertion and removal of the pulverized coal pipe 20. The cylindrical sleeve 13 is made of a metal material matching the material of the backrest tube 11, such as 304 stainless steel, and is connected by argon arc welding to ensure the strength and sealing of the weld.

[0052] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, a sealing ring 14 is provided between the cylindrical sleeve 13 and the sealing element 12. It should be noted that the sealing ring 14 is connected to the sealing element 12 and has an interference fit with the cylindrical sleeve 13, thereby preventing coal powder from being ejected from the gap and further improving the sealing performance.

[0053] In some embodiments of this utility model, such as Figure 1 As shown, the cylindrical sleeve 13 has a graduated layer 131 on its outer peripheral wall for measuring the distance the backrest tube 11 moves. During wind speed measurement tests, the measuring point location needs to be determined in advance based on the diameter of the pulverized coal pipe 20. The graduated layer 131 on the surface of the cylindrical sleeve 13 allows the tester to directly read and measure the values, eliminating the need for measuring tools such as tape measures. This reduces the tester's additional measurement work and facilitates precise control of the depth to which the backrest tube 11 extends into the pulverized coal pipe 20. The graduated indication on the graduated layer 131 has an accuracy of 1 mm, and the graduated lines on the graduated layer 131 are made using wear-resistant processes such as laser etching to ensure that they will not become blurred due to wear during long-term use.

[0054] The following is for reference. Figure 5 A pipe assembly according to an embodiment of the present utility model is described.

[0055] like Figure 5 As shown, the pipeline assembly according to an embodiment of the present invention includes: a pulverized coal pipeline 20, a pulverized coal ball valve 40, and the aforementioned pulverized coal pipeline wind speed measuring and anti-blowout device 10.

[0056] Specifically, refer to Figure 5 The pulverized coal pipeline 20 has a ball valve pipeline 30 connected to the pulverized coal pipeline 20 on its periphery; the pulverized coal pipeline wind speed measurement anti-blowout device 10 is connected to the ball valve pipeline 30 and is used to measure the wind speed in the pulverized coal pipeline 20 of the pipeline assembly; the air-powder ball valve 40 is located inside the pulverized coal pipeline 20 and is used to control the opening and closing of the pulverized coal pipeline 20, thereby realizing the opening and closing of the wind speed measuring point.

[0057] According to the pipeline assembly of this utility model embodiment, by setting the above-mentioned coal powder pipeline wind speed measuring anti-spray device 10, one end of the backing pipe 11 is adapted to pass through the ball valve pipeline 30 and extend into the coal powder pipeline 20, and the other end is set outside the ball valve pipeline 30; the sealing element 12 is sleeved on the backing pipe 11 and is movable relative to the backing pipe 11 along the length direction of the backing pipe 11. The sealing element 12 is set on the side of the ball valve pipeline 30 away from the coal powder pipeline 20. The sealing element 12 is used for sealing between the coal powder pipeline 20 and the backing pipe 11. The sealing element 12 is adapted to be detachably connected to the coal powder pipeline 20. The setting of the sealing element 12 can form a good sealing structure, effectively preventing coal powder from being sprayed from the gap between the ball valve pipeline 30 and the backing pipe 11, thereby reducing coal powder waste, reducing production costs, reducing pollution to the working environment and harm to personnel.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present 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.

[0059] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pulverized coal pipeline wind speed measurement and blowout prevention device, characterized in that, A pulverized coal pipeline for measuring air velocity in a pipeline assembly, the pulverized coal pipeline having a ball valve pipe communicating with the pulverized coal pipeline on its peripheral wall, the pulverized coal pipeline air velocity measuring blowout prevention device comprising: A speed measuring component, comprising: a backrest tube and a sealing element, one end of the backrest tube being adapted to pass through the ball valve pipe and extend into the pulverized coal pipe, and the other end being located outside the ball valve pipe and adapted to be connected to a pressure measuring device; the sealing element being sleeved on the backrest tube and movable relative to the backrest tube along the length direction of the backrest tube; the sealing element being located on the side of the ball valve pipe away from the pulverized coal pipe; and the sealing element being used for sealing between the pulverized coal pipe and the backrest tube. An adapter, wherein the sealing element is adapted to be detachably connected to the pulverized coal pipeline via the adapter.

2. The pulverized coal pipeline wind speed measurement and blowout prevention device according to claim 1, characterized in that, The adapter is sleeved outside the sealing element and is located at the end of the ball valve pipeline opposite to the pulverized coal pipeline. The adapter includes: A first adapter and a second adapter, wherein the second adapter is located at the end of the first adapter opposite to the pulverized coal pipeline and is connected to the first adapter, the first adapter is adapted to be detachably connected to the ball valve pipeline, and the second adapter is adapted to be detachably connected to the sealing element, wherein the inner diameters of the first adapter and the second adapter are different.

3. The pulverized coal pipeline wind speed measurement and blowout prevention device according to claim 2, characterized in that, The first adapter and the second adapter are detachably connected.

4. The pulverized coal pipeline wind speed measurement and blowout prevention device according to claim 2, characterized in that, The first adapter is adapted to be threadedly connected to the ball valve pipeline, and the second adapter is adapted to be threadedly connected to the sealing element.

5. The pulverized coal pipeline wind speed measurement and blowout prevention device according to claim 2, characterized in that, The first adapter includes multiple first sub-adapters arranged and connected along the length of the first adapter. The ball valve pipe is adapted to connect to one of the first sub-adapters. In the direction from the first adapter to the second adapter, the inner diameter of the multiple first sub-adapters increases or decreases sequentially.

6. The pulverized coal pipeline wind speed measurement and blowout prevention device according to claim 2, characterized in that, The second adapter includes multiple second sub-adapters arranged and connected along the length of the second adapter. The sealing element is adapted to connect with one of the second sub-adapters. In the direction from the first adapter to the second adapter, the inner diameters of the multiple second sub-adapters increase sequentially.

7. The pulverized coal pipeline wind speed measurement and blowout prevention device according to claim 1, characterized in that, The speed measuring component also includes: A cylindrical sleeve is disposed between the sealing element and the backrest tube, and is connected to the backrest tube.

8. The pulverized coal pipeline wind speed measurement and blowout prevention device according to claim 7, characterized in that, A sealing ring is provided between the cylindrical sleeve and the sealing element.

9. The pulverized coal pipeline wind speed measurement and blowout prevention device according to claim 7, characterized in that, The cylindrical sleeve has a graduated layer on its outer peripheral wall for measuring the distance the backrest tube moves.

10. A pipe assembly, characterized in that, include: A pulverized coal pipeline, wherein a ball valve pipeline communicating with the pulverized coal pipeline is provided on the peripheral wall of the pulverized coal pipeline; According to any one of claims 1-9, the pulverized coal pipeline wind speed measurement and blowout prevention device is connected to the ball valve pipeline and is used to measure the wind speed in the pulverized coal pipeline of the pipeline assembly. A pulverized coal ball valve is installed inside the pulverized coal pipeline and is used to control the on / off state of the pulverized coal pipeline.

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