Fly ash sampling device of ash conveying system of thermal power plant

Abstract

The invention discloses a coal ash sampling device of an ash conveying system of a thermal power plant, relates to the technical field of coal ash sampling detection of a power plant, and aims to solve the problems of flying dust pollution and direct ejection of a high-temperature ash sample. The filter part collects coal ash until the filter part is completely blocked, at the moment, the air pressure is larger than the elastic force of the reset assembly and then drives the filter part to move downwards, the inner container filter screen is exposed, at the moment, gas preferentially penetrates through the inner container filter screen and is discharged out of the exhaust cavity, the ash flying problem is avoided, and air impacts the annular groove heat dissipation barrel to be buffered; gas enters from the inlet, is buffered and cooled by the heat dissipation channel, is discharged from the outlet, is cooled by the heat dissipation disc, is discharged from the supporting plate, and is cooled and buffered by the ground, so that the gas is cooled and buffered, finally, the gas discharge pressure and temperature are reduced, and the safety is high.

Description

Technical Field

[0001] The invention relates to the technical field of fly ash sampling and detection in power plants, in particular to a fly ash sampling device for an ash conveying system in a thermal power plant. Background Art

[0002] In the ash conveying system of a thermal power plant, fly ash sampling and testing is extremely important, because the fly ash of a thermal power plant is a silver-gray or gray powdery particle produced by the high-temperature combustion of coal inside the boiler. It is composed of fine solid or hollow amorphous glass beads and a small amount of carbon. After dust collection, it enters the ash storage through the ash conveying system. Because fly ash has unique physical and chemical properties and is rich in a variety of valuable metal elements, it is a secondary resource that can be comprehensively utilized. After sampling and testing, fly ash can be used in cement plants, mixing stations and other industrial scenarios if it meets user requirements. It can not only create considerable economic benefits, but also alleviate environmental pollution problems and achieve a win-win situation for the industry; The current method of sampling dry fly ash is to directly separate a sampling branch pipe from the ash conveying pipeline, install a manual ball valve on the branch pipe, connect the sampling bag under the branch pipe, and open the manual ball valve for sampling. This method is simple, but the ash sample temperature in the ash conveying pipeline is 100-130℃, and the ash conveying compressed air pressure is 0.3-0.4Mpa. When the manual ball valve is opened, the high-temperature ash sample is directly sprayed out, posing a safety hazard of scalding. It requires the cooperation of two people (one to receive the sample and the other to operate the valve), and dust pollution will be generated on site.

[0003] The prior art announcement number CN119064091A discloses a fly ash sampling device and an operating method for a pneumatic ash conveying pipeline in a thermal power plant, comprising an ash conveying connecting pipe, a feed pipe, a fly ash separation bin, an ash storage bin and an exhaust pipe, wherein the ash conveying connecting pipe is provided with a Venturi tube section, and a first connection part, a Venturi tube section and a second connection part are arranged in sequence along the flow direction of the fly ash; a first interface is provided on the side wall of the ash conveying connecting pipe, a feed pipe is inserted at the first interface, and at least two sampling heads are provided at the end of the feed pipe; a second interface is provided on the side wall of the Venturi tube section, and the exhaust pipe is connected to the second interface, the fly ash separation bin is connected between the feed pipe and the exhaust pipe, and the feed pipe, the fly ash separation bin and the exhaust pipe are connected in sequence to form a fly ash sampling channel; the ash storage bin is provided at the lower part of the fly ash separation bin, and an isolation plate is movably installed between the fly ash separation bin and the ash storage bin. The fly ash sampling work can be completed quickly and accurately from the ash conveying pipeline to ensure that the sample truly reflects the characteristics of the fly ash. Although it solves the complicated operation of one person receiving the sample and one person operating the valve, there are still problems of dust pollution and direct spraying of high-temperature ash samples when receiving the materials.

[0004] Therefore, a fly ash sampling device for an ash conveying system of a thermal power plant is needed. Summary of the invention

[0005] In order to solve all or part of the above problems, the present invention aims to provide a fly ash sampling device for an ash conveying system of a thermal power plant, so as to solve the problems of dust pollution and direct ejection of high-temperature ash samples.

[0006] To achieve the above object, the present invention provides the following technical solution: a fly ash sampling device of an ash conveying system of a thermal power plant, comprising a connecting component and a sampling component, wherein the upper end of the connecting component is connected to a main ash conveying pipe, and the lower end of the connecting component is provided with a sampling component, wherein the sampling component comprises a sampling barrel assembly and a filter assembly installed inside the sampling barrel assembly; The sampling barrel assembly includes a sampling barrel and an inner liner filter screen installed at the upper inner end of the sampling barrel, the sampling barrel and the inner liner filter screen form an exhaust cavity, the filter assembly includes a carrier frame and a reset assembly installed at the lower end of the carrier frame, the carrier frame matches the inner side of the inner liner filter screen, a filter element is installed at the upper end of the carrier frame, and the filter element is adapted to the inner side of the carrier frame; A support assembly is also installed at the lower end of the sampling barrel assembly, and a ring groove heat dissipation barrel is installed on the inner side of the support assembly. The ring groove heat dissipation barrel is provided with an inlet, a heat dissipation channel and an outlet. The inlet, heat dissipation channel and outlet are interconnected. A heat dissipation plate is installed on the inner side of the support assembly located at the lower end of the ring groove heat dissipation barrel, and a support plate is also installed on the lower end of the support assembly.

[0007] Furthermore, the connecting component includes a solenoid valve tube and a spring tube installed at the lower end of the solenoid valve tube, the upper end of the solenoid valve tube is connected to the coal ash main conveying pipe, the connecting part includes a connecting ring and a fixed ring rotatably installed on the upper end of the inner side of the connecting ring, and the outer side of the upper end of the sampling barrel is threadedly connected to the connecting ring.

[0008] Furthermore, the reset component includes an elastic sensing component and a fixed frame installed at the lower end of the elastic sensing component, the outer side of the fixed frame is fixedly connected to the sampling barrel, the elastic sensing component includes an outer connecting tube and a reset spring installed on the inner side of the outer connecting tube, the upper end of the outer connecting tube is fixedly connected to the lower end of the supporting frame, the inner side of the outer connecting tube is also movably provided with a supporting inner tube, the lower end of the supporting inner tube is fixedly connected to the fixed frame, the lower end of the reset spring is fixedly connected to the upper end of the supporting inner tube, the upper end of the supporting inner tube is also installed with a pressure sensor, and the pressure sensor is located on the inner side of the reset spring, and a trigger tube is also installed on the inner side of the outer connecting tube, the trigger tube is located on the inner side of the reset spring, and the lower end of the trigger tube corresponds to the pressure sensor.

[0009] Furthermore, the upper end of the fixing ring is fixedly connected to the lower end of the spring tube, a sealing groove is provided on the inner side of the lower end of the fixing ring, a plurality of pressure relief holes are provided on the fixing ring located at the upper end of the inner side of the sealing groove, one end of the pressure relief hole is connected to the sealing groove and the other end is connected to the inner side of the fixing ring, a sealing ring is installed on the sampling barrel located at the upper end of the exhaust cavity, the sealing ring matches the sealing groove, a through hole is provided on the sealing ring, and the through hole is connected to the exhaust cavity.

[0010] Furthermore, an anti-blocking component is installed on the filter component, and the anti-blocking component includes a center ring and a ball movably embedded in the inner wall of the center ring. A support frame is fixedly installed on the inner side of the fixed frame, and a center column is installed on the middle upper end of the support frame. A spiral groove is opened on the upper end of the center column, and the spiral groove matches the center ring. Multiple anti-blocking sheets are installed on the outer side of the center ring. The lower side of the anti-blocking sheet is in contact with the filter element, and the side of the anti-blocking sheet away from the center ring is in contact with the inner side of the inner tank filter.

[0011] Furthermore, the support assembly includes a support barrel, a support ring groove is opened on the inner side of the upper end of the support barrel, a movable ring is installed at the lower end of the sampling barrel, the lower end of the movable ring matches the support ring groove, a spring is arranged at the inner bottom of the support ring groove, the lower end of the spring is fixedly connected to the support barrel, and a support ring is fixedly installed on the upper end of the spring, and the upper side of the support ring fits with the lower side of the movable ring.

[0012] Furthermore, the input end of the inlet is connected to the inner side of the sampling barrel, the output end of the inlet is connected to the input end of the heat dissipation channel, the heat dissipation channel is spirally arranged, the output end of the heat dissipation channel is connected to the input end of the outlet, the output end of the outlet is connected to the inner lower end of the support assembly, a plurality of heat dissipation holes are provided on the heat dissipation plate, the inner part of the heat dissipation plate is hollow and water is injected into the inner part, and a controller is installed on the outer side of the support barrel; A support plate is installed at the lower end of the support barrel, a plurality of exhaust holes are opened in the middle of the support plate, the upper ends of the exhaust holes are connected with the heat dissipation holes, and moving wheels are also installed at the four corners of the lower end of the support plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention proposes a fly ash sampling device for an ash conveying system of a thermal power plant. The fly ash enters from a connecting component and impacts a filter element. The pressure of the main ash conveying pipe is greater than the pressure inside a fixed ring. The filter element collects the fly ash until the filter element is completely blocked. At this time, the wind pressure is greater than the elastic force of the reset component, thereby driving the filter element to move downward, exposing the inner liner filter screen. At this time, the gas preferentially passes through the inner liner filter screen and is discharged from the exhaust cavity. Not only is the fly ash filtered at the inner upper end of the sampling barrel and will not be discharged with the air, thus avoiding the fly ash problem. Moreover, as the filter element moves downward, a large amount of fly ash will accumulate in the upper end space surrounded by the inner liner filter screen and the filter element, thus facilitating large-scale sampling and improving the one-time sampling speed.

[0014] 2. The present invention proposes a fly ash sampling device for the ash conveying system of a thermal power plant. The air impacts the annular groove heat dissipation barrel and is buffered. The air enters from the inlet and is buffered and dissipated through the heat dissipation channel before being discharged from the outlet. The air is then dissipated through the heat dissipation plate and discharged from the support plate and buffered by the ground. The gas is not only cooled but also buffered, thereby ultimately reducing the gas discharge pressure and temperature, and is highly safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the fly ash sampling device of the ash conveying system of a thermal power plant after installation of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the connecting piece of the fly ash sampling device of the ash conveying system of a thermal power plant according to the present invention; Figure 3 It is a schematic diagram of the structure of the sampling components of the fly ash sampling device of the ash conveying system of a thermal power plant according to the present invention; Figure 4 It is a schematic diagram of the cutaway three-dimensional structure of the inner mechanism of the sampling bucket assembly of the fly ash sampling device of the ash conveying system of a thermal power plant according to the present invention; Figure 5 It is a schematic diagram of the disassembled structure of the inner mechanism of the sampling bucket assembly of the fly ash sampling device of the ash conveying system of a thermal power plant according to the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the elastic sensor component of the fly ash sampling device of the ash conveying system of a thermal power plant according to the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the filter element and anti-blocking assembly of the fly ash sampling device of the ash conveying system of a thermal power plant according to the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the annular groove heat dissipation barrel, the heat dissipation plate and the support plate of the fly ash sampling device of the ash conveying system of a thermal power plant of the present invention; Fig. 9 The present invention is a schematic diagram of the inner side planar structure of the annular groove heat dissipation barrel of the fly ash sampling device of the ash conveying system of a thermal power plant.

[0016] In the figure: 1. Solenoid valve tube; 2. Spring tube; 3. Connector; 31. Connecting ring; 32. Fixing ring; 321. Sealing groove; 322. Pressure discharge hole; 4. Sampling barrel assembly; 41. Sampling barrel; 411. Exhaust cavity; 42. Inner tank filter; 43. Sealing ring; 431. Through hole; 44. Movable ring; 5. Filter assembly; 51. Carrying frame; 52. Elastic sensor assembly; 521. Connecting outer tube; 522. Reset spring; 523. Support inner tube; 524. Pressure sensor; 525. Trigger tube; 53. Fixed frame; 54, filter element; 6, anti-blocking assembly; 61, center ring; 62, ball bearing; 63, center column; 64, spiral groove; 65, support frame; 66, anti-blocking sheet; 7, support assembly; 71, support barrel; 711, support ring groove; 72, spring; 73, support ring; 8, ring groove heat dissipation barrel; 81, inlet; 82, heat dissipation channel; 83, outlet; 9, heat dissipation plate; 91, controller; 92, heat dissipation hole; 10, support plate; 101, exhaust hole; 102, moving wheel; 11, coal ash main conveying pipe. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figure 1 As shown, a fly ash sampling device for the ash conveying system of a thermal power plant includes a connecting component and a sampling component. The upper end of the connecting component is connected to the main ash conveying pipe 11. The connection method can be fixed welding or a detachable connection. The main thing is to ensure the sealing of the connection. The sampling component is installed at the lower end of the connecting component.

[0019] like Figure 1 As shown, the connecting component includes a solenoid valve tube 1 and a spring tube 2 installed at the lower end of the solenoid valve tube 1. The solenoid valve tube 1 is composed of a tapered tube and a solenoid valve. The end of the tapered tube with a smaller diameter is connected to the main coal ash conveying pipe 11, and the end of the tapered tube with a thicker diameter is fixedly connected to the upper end of the spring tube 2. The spring tube 2 is easy to extend, so that the connecting piece 3 installed at the lower end of the spring tube 2 can be extended and connected to the sampling component, which is convenient for manual fast and simple connection operation.

[0020] like Figure 2-Figure 4As shown, the connecting member 3 includes a connecting ring 31 and a fixed ring 32 rotatably installed on the inner upper end of the connecting ring 31, the sampling barrel assembly 4 includes a sampling barrel 41 and an inner tank filter screen 42 installed on the inner upper end of the sampling barrel 41, the outer side of the upper end of the sampling barrel 41 is detachably sealed and connected to the inner side of the connecting ring 31, and the preferred disassembly method is threaded connection. When sampling is required, the sampling component is moved to the lower end of the connecting ring 31, and the connecting ring 31 is threadedly connected to the upper end of the sampling barrel 41 by pulling, thereby facilitating the connection between the connecting component and the sampling component, and the operation is simple and quick. In addition, for large power plants with multiple coal ash main conveying pipes 11, the connecting ring 31 can be installed on each coal ash main conveying pipe 11, and the coal ash can be taken out after the previous coal ash main conveying pipe 11 is sampled, and then the next coal ash main conveying pipe 11 is sampled by the moving sampling component, so that the mechanism installed on the coal ash main conveying pipe 11 occupies a small space and the device cost is low.

[0021] like Figure 3-Figure 5 As shown, the sampling barrel 41 and the inner tank filter 42 form an exhaust cavity 411, and the lower end of the exhaust cavity 411 is unobstructedly connected to the inner side of the sampling barrel 41 through a through groove; the filter assembly 5 includes a carrier frame 51 and a reset assembly installed at the lower end of the carrier frame 51, the carrier frame 51 matches the inner side of the inner tank filter 42, and a filter element 54 is installed at the upper end of the carrier frame 51, the filter element 54 is adapted to the inner side of the carrier frame 51, and the filter element 54 can be placed on the carrier frame 51 to facilitate replacement of the filter element 54.

[0022] Specifically, when sampling and testing is required, the connecting component and the sampling component are connected, and the solenoid valve tube 1 is started. At this time, the pressure of the coal ash main conveying pipe 11 is greater than the pressure inside the fixed ring 32, so that the coal ash enters the inside of the sampling barrel 41 and impacts the filter element 54. The filter element 54 filters out the coal ash heat and the air passes through it. As the coal ash accumulates on the filter element 54, the filter element 54 is blocked. At this time, the wind pressure is greater than the elastic force of the reset component, which drives the filter element 54 to move downward, so that the inner tank filter screen 42 is exposed. At this time, the gas preferentially passes through the inner tank filter screen 42 and is discharged from the exhaust cavity 411, and so on, until the reset component reaches its limit, the coal ash is collected, not only the coal ash is filtered at the upper end of the inner side of the sampling barrel 41, and will not be discharged with the air, avoiding the fly ash problem, but also as the filter element 54 moves downward, a large amount of coal ash will accumulate in the upper space surrounded by the inner tank filter screen 42 and the filter element 54, which is convenient for large-scale sampling and improves the one-time sampling speed.

[0023] It should be added that after sampling is completed, the filter element 54 can be removed from the carrier frame 51 for replacement to ensure the filtering effect of the filter element 54 for secondary use. When the inner liner filter screen 42 is blocked during secondary use, the air passing through the inner liner filter screen 42 on the upper side of the filter element 54 will pass through the exhaust cavity 411 and will reversely impact the inner liner filter screen 42 located on the lower side of the filter element 54, thereby automatically preventing blockage.

[0024] like Figure 4-Figure 6 As shown, the reset assembly includes an elastic sensor assembly 52 and a fixing frame 53 installed at the lower end of the elastic sensor assembly 52 , and the outer side of the fixing frame 53 is fixedly connected to the sampling barrel 41 .

[0025] The elastic sensing assembly 52 includes a connecting outer tube 521 and a reset spring 522 installed on the inner side of the connecting outer tube 521. The upper end of the connecting outer tube 521 is fixedly connected to the lower end of the supporting frame 51. A supporting inner tube 523 is also movably provided on the inner side of the connecting outer tube 521. The lower end of the supporting inner tube 523 is fixedly connected to the fixing frame 53. The lower end of the reset spring 522 is fixedly connected to the upper end of the supporting inner tube 523. A pressure sensor 524 is also installed on the upper end of the supporting inner tube 523, and the pressure sensor 524 is located on the inner side of the reset spring 522. A trigger tube 525 is also installed on the inner side of the connecting outer tube 521. The trigger tube 525 is located on the inner side of the reset spring 522 and its length is less than the length of the connecting outer tube 521. The lower end of the trigger tube 525 corresponds to the pressure sensor 524.

[0026] During the sampling process, the return spring 522 is squeezed to exert an upward thrust on the carrier 51, so that the carrier 51 can slowly move downward, which is convenient for the coal ash to pass through the inner tank filter 42. When the carrier 51 is pressed down to the limit, the trigger tube 525 triggers the pressure sensor 524, and the pressure sensor 524 senses that the solenoid valve tube 1 is automatically closed, and the sampling is completed. After sampling is completed, the sampling bucket 41 is removed and the coal ash is poured out, and the reset spring 522 is reset for secondary use, and the support frame 51 can scrape off the coal ash accumulated on the inner wall of the inner tank filter 42 for centralized treatment.

[0027] Further, such as Figure 2 and Figure 4 As shown, the upper end of the fixing ring 32 is fixedly connected to the lower end of the spring tube 2, a sealing groove 321 is provided on the inner side of the lower end of the fixing ring 32, and a plurality of pressure relief holes 322 are provided on the fixing ring 32 located at the upper inner side of the sealing groove 321, one end of the pressure relief hole 322 is connected to the sealing groove 321 and the other end is connected to the inner side of the fixing ring 32; A sealing ring 43 is installed on the sampling barrel 41 at the upper end of the exhaust cavity 411 . The sealing ring 43 matches the sealing groove 321 . A through hole 431 is opened on the sealing ring 43 . The through hole 431 is communicated with the exhaust cavity 411 .

[0028] Specifically, after the connecting component and the sampling component are connected, the sealing ring 43 is inserted into the inner side of the pressure relief hole 322 to achieve a sealing effect. At this time, the upper side of the sealing ring 43 blocks the sealing groove 321 to ensure the sealing effect. When the collection is completed and the sampling component is removed, the cavity surrounded by the upper end of the sampling barrel 41 and the inner side of the lower end of the connecting component is still in a high-pressure state. At this time, the connecting ring 31 is rotated to separate the connecting component and the sampling component, and the sealing ring 43 is separated from the pressure relief hole 322. The coal ash enters the pressure relief hole 322 from the sealing groove 321 and enters the inner side of the exhaust cavity 411 from the through hole 431 and is discharged, so that the cavity surrounded by the sampling barrel 41 and the connecting component is depressurized. When the connecting component and the sampling component are disassembled, the high-pressure coal ash in the cavity is prevented from being sprayed out to ensure safety.

[0029] In order to further increase the amount of coal ash carried by the upper end of the filter assembly 5, as Figure 4-Figure 5 and Figure 7 As shown, an anti-blocking component 6 is installed on the filter component 5, and the anti-blocking component 6 includes a center ring 61 and a ball 62 movably embedded in the inner wall of the center ring 61. A support frame 65 is fixedly installed on the inner side of the fixed frame 53, and a center column 63 is installed at the middle upper end of the support frame 65. A spiral groove 64 is opened at the upper end of the center column 63, and the spiral groove 64 matches the center ring 61. A plurality of anti-blocking sheets 66 are installed on the outer side of the center ring 61. The lower side of the anti-blocking sheet 66 is in contact with the filter element 54, and the side of the anti-blocking sheet 66 away from the center ring 61 is in contact with the inner side of the inner tank filter screen 42.

[0030] When the filter assembly 5 is pushed downward by pressure, the center ring 61 moves downward. Under the cooperation effect of the ball 62 and the spiral groove 64, the spiral groove 64 prompts the ball 62 to drive the center ring 61 to rotate. The rotation of the center ring 61 then drives the anti-blocking piece 66 to rotate. The lower end of the anti-blocking piece 66 can block and clean the upper side of the filter element 54, so that air can pass through again, thereby further accumulating coal ash. Similarly, one side of the anti-blocking piece 66 can block and clean the inside of the inner tank filter 42, and finally facilitate the collection of a large amount of coal ash, so that the diameter of the sampling component can be reduced while ensuring that the amount of coal ash collected at one time can meet the standard.

[0031] like Figure 1 and Figure 8As shown, a support assembly 7 is provided at the lower side of the sampling barrel assembly 4, and the support assembly 7 includes a support barrel 71. A support ring groove 711 is provided on the inner side of the upper end of the support barrel 71. A movable ring 44 is installed at the lower end of the sampling barrel 41. The lower end of the movable ring 44 matches the support ring groove 711. A spring 72 is provided at the inner bottom of the support ring groove 711. The lower end of the spring 72 is fixedly connected to the support barrel 71. A support ring 73 is fixedly installed at the upper end of the spring 72. The upper side of the support ring 73 fits with the lower side of the movable ring 44, which not only facilitates the removal of the sampling barrel assembly 4 separately, but also the spring 72 makes the support ring 73 fit with the movable ring 44 to improve the sealing effect.

[0032] like Figure 1 and Figure 8-Figure 9 As shown, a ring groove heat dissipation barrel 8 is installed on the inner side of the support barrel 71. The ring groove heat dissipation barrel 8 is composed of an outer shell and a refrigerator arranged on the inner side of the outer shell. An inlet 81, a heat dissipation channel 82 and an outlet 83 are provided on the outer shell. The input end of the inlet 81 is connected to the inner side of the sampling barrel 41, and the output end of the inlet 81 is connected to the input end of the heat dissipation channel 82. The heat dissipation channel 82 is arranged in a spiral shape. The heat dissipation channel 82 is covered on the outer side of the cooling end of the refrigerator, and the output end of the heat dissipation channel 82 is connected to the input end of the outlet 83. The output end of the outlet 83 is connected to the inner lower end of the support barrel 71.

[0033] Specifically, when the high-pressure gas discharged from the sampling barrel assembly 4 impacts the annular groove heat dissipation barrel 8, since the upper surface of the annular groove heat dissipation barrel 8 is mostly closed, the high-pressure gas can be buffered once, and then enter the heat dissipation channel 82 from the inlet 81 and be discharged from the outlet 83. The annular heat dissipation channel 82 not only facilitates the refrigeration of the refrigerator to reduce the gas temperature, but also the annular heat dissipation channel 82 can buffer the gas and reduce the gas discharge pressure.

[0034] like Figure 1 and Figure 8 As shown, a heat sink 9 is installed on the inner side of the support barrel 71 located at the lower end of the ring groove heat sink 8. A plurality of heat dissipation holes 92 are opened on the heat sink 9. The heat sink 9 is hollow inside and water is injected inside. The heat dissipation holes 92 penetrate the heat sink 9 and are not connected to the water. A controller 91 is installed on the outer side of the support barrel 71. The controller 91 is electrically connected to the refrigerator, the pressure sensor 524 and the solenoid valve respectively.

[0035] A support plate 10 is installed at the lower end of the support barrel 71. A plurality of exhaust holes 101 are opened in the middle of the support plate 10. The upper ends of the exhaust holes 101 are connected to the heat dissipation holes 92. Moving wheels 102 are also installed at the four corners of the lower end of the support plate 10 to facilitate the movement of the entire sampling component.

[0036] The gas discharged from the outlet 83 enters the heat dissipation hole 92 for secondary heat dissipation. The water-filled design on the inner side of the heat dissipation plate 9 allows the water to dissipate the heat of the gas, and the frequency of use of the entire device is low. The water temperature will be lowered when it is used for the second time, which is not only convenient for repeated use to dissipate the heat of the gas, but also the refrigeration temperature of the refrigerator can be adjusted to match the water to reach the final 20-30 degrees Celsius, thereby reducing the power consumption of the refrigerator and saving costs. Furthermore, the gas from the heat dissipation hole 92 is discharged from the exhaust hole 101 to impact the ground, and the ground can also absorb a small amount of heat, and can further buffer the gas and disperse the gas. Even if it impacts the human body, it will not cause harm to the human body, thereby finally solving the problem of direct spraying of high-temperature ash samples.

[0037] It should be noted that, in the description of the present application, it should be understood that the terms "length", "thickness", "inside", "outside", "axial", "radial", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In addition, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fly ash sampling device for an ash conveying system of a thermal power plant, comprising a connecting component and a sampling component, wherein the upper end of the connecting component is connected to a main ash conveying pipe (11), and the lower end of the connecting component is provided with a sampling component, characterized in that: The sampling component comprises a sampling barrel assembly (4) and a filter assembly (5) installed inside the sampling barrel assembly (4); The sampling barrel assembly (4) comprises a sampling barrel (41) and an inner liner filter screen (42) mounted on the upper inner end of the sampling barrel (41); the sampling barrel (41) and the inner liner filter screen (42) form an exhaust cavity (411); the filter assembly (5) comprises a carrier frame (51) and a reset assembly mounted on the lower end of the carrier frame (51); the carrier frame (51) matches the inner side of the inner liner filter screen (42); a filter element (54) is mounted on the upper end of the carrier frame (51); the filter element (54) matches the inner side of the carrier frame (51); A support assembly (7) is also installed at the lower end of the sampling barrel assembly (4); a ring groove heat dissipation barrel (8) is installed on the inner side of the support assembly (7); an inlet (81), a heat dissipation channel (82) and an outlet (83) are provided on the ring groove heat dissipation barrel (8); the inlet (81), the heat dissipation channel (82) and the outlet (83) are interconnected; a heat dissipation plate (9) is installed on the inner side of the support assembly (7) at the lower end of the ring groove heat dissipation barrel (8); and a support plate (10) is also installed at the lower end of the support assembly (7); The coal ash enters from the connecting component and impacts the filter element (54). The pressure of the coal ash main conveying pipe (11) is greater than the pressure inside the fixed ring (32). The filter element (54) collects the coal ash until the filter element (54) is completely blocked. At this time, the wind pressure is greater than the elastic force of the reset component, thereby driving the filter element (54) to move downward, so that the inner tank filter (42) is exposed. At this time, the gas preferentially passes through the inner tank filter (42) and is discharged from the exhaust cavity (411). The air impacts the annular groove heat dissipation barrel (8) and is buffered. The air enters from the inlet (81) and passes through the heat dissipation channel (82) for buffering and heat dissipation, and is then discharged from the outlet (83). The air is then dissipated through the heat dissipation plate (9) and discharged from the support plate (10) to be buffered by the ground.

2. A fly ash sampling device for an ash conveying system of a thermal power plant as claimed in claim 1, characterized in that: The connecting component comprises a solenoid valve tube (1) and a spring tube (2) mounted at the lower end of the solenoid valve tube (1); the upper end of the solenoid valve tube (1) is connected to a main coal ash conveying pipe (11); the connecting piece (3) comprises a connecting ring (31) and a fixing ring (32) rotatably mounted at the upper end of the inner side of the connecting ring (31); and the outer end of the upper end of the sampling barrel (41) is threadedly connected to the connecting ring (31).

3. A fly ash sampling device for an ash conveying system of a thermal power plant as claimed in claim 1, characterized in that: The reset assembly comprises an elastic sensor assembly (52) and a fixing frame (53) mounted at the lower end of the elastic sensor assembly (52), and the outer side of the fixing frame (53) is fixedly connected to the sampling barrel (41).

4. A fly ash sampling device for an ash conveying system of a thermal power plant as claimed in claim 3, characterized in that: The elastic sensing assembly (52) comprises an outer connecting tube (521) and a return spring (522) mounted on the inner side of the outer connecting tube (521); the upper end of the outer connecting tube (521) is fixedly connected to the lower end of the support frame (51); a support inner tube (523) is movably arranged on the inner side of the outer connecting tube (521); the lower end of the support inner tube (523) is fixedly connected to the fixed frame (53); the lower end of the return spring (522) is fixedly connected to the upper end of the support inner tube (523); a pressure sensor (524) is mounted on the upper end of the support inner tube (523); the pressure sensor (524) is located on the inner side of the return spring (522); a trigger tube (525) is mounted on the inner side of the outer connecting tube (521); the trigger tube (525) is located on the inner side of the return spring (522); the lower end of the trigger tube (525) corresponds to the pressure sensor (524).

5. The fly ash sampling device of the ash conveying system of a thermal power plant according to claim 1, characterized in that: The upper end of the fixing ring (32) is fixedly connected to the lower end of the spring tube (2); a sealing groove (321) is provided on the inner side of the lower end of the fixing ring (32); a plurality of pressure relief holes (322) are provided on the fixing ring (32) located at the upper inner side of the sealing groove (321); one end of the pressure relief hole (322) is communicated with the sealing groove (321) and the other end is communicated with the inner side of the fixing ring (32); A sealing ring (43) is installed on the sampling barrel (41) located at the upper end of the exhaust cavity (411); the sealing ring (43) matches the sealing groove (321); a through hole (431) is provided on the sealing ring (43); and the through hole (431) is connected to the exhaust cavity (411).

6. The fly ash sampling device of the ash conveying system of a thermal power plant according to claim 1, characterized in that: An anti-blocking component (6) is installed on the filter component (5), and the anti-blocking component (6) includes a center ring (61) and a ball (62) movably embedded in the inner wall of the center ring (61). A support frame (65) is fixedly installed on the inner side of the fixed frame (53). A center column (63) is installed at the middle upper end of the support frame (65). A spiral groove (64) is opened at the upper end of the center column (63). The spiral groove (64) matches the center ring (61). A plurality of anti-blocking sheets (66) are installed on the outer side of the center ring (61). The lower side of the anti-blocking sheet (66) is in contact with the filter element (54), and the side of the anti-blocking sheet (66) away from the center ring (61) is in contact with the inner side of the inner tank filter screen (42).

7. A fly ash sampling device for an ash conveying system of a thermal power plant as claimed in claim 1, characterized in that: The support assembly (7) comprises a support barrel (71), the inner side of the upper end of the support barrel (71) is provided with a support ring groove (711), the lower end of the sampling barrel (41) is provided with a movable ring (44), the lower end of the movable ring (44) matches the support ring groove (711), a spring (72) is provided at the inner bottom of the support ring groove (711), the lower end of the spring (72) is fixedly connected to the support barrel (71), the upper end of the spring (72) is fixedly provided with a support ring (73), and the upper side of the support ring (73) is in contact with the lower side of the movable ring (44).

8. The fly ash sampling device of the ash conveying system of a thermal power plant according to claim 1, characterized in that: The input end of the inlet (81) is connected to the inner side of the sampling barrel (41), the output end of the inlet (81) is connected to the input end of the heat dissipation channel (82), the heat dissipation channel (82) is arranged in a spiral shape, the output end of the heat dissipation channel (82) is connected to the input end of the outlet (83), and the output end of the outlet (83) is connected to the inner lower end of the support assembly (7).

9. The fly ash sampling device of the ash conveying system of a thermal power plant according to claim 1, characterized in that: A plurality of heat dissipation holes (92) are provided on the heat dissipation plate (9). The heat dissipation plate (9) is hollow and filled with water. A controller (91) is installed on the outside of the support barrel (71).

10. A fly ash sampling device for an ash conveying system of a thermal power plant as claimed in claim 9, characterized in that: A support plate (10) is mounted at the lower end of the support barrel (71), a plurality of exhaust holes (101) are provided in the middle of the support plate (10), the upper ends of the exhaust holes (101) are connected to the heat dissipation holes (92), and moving wheels (102) are mounted at the four corners of the lower end of the support plate (10).

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