A fly ash sampling device of a coal-fired power plant ash conveying system

Abstract

The application discloses a fly ash sampling device of a coal ash conveying system of a thermal power plant, relates to the technical field of coal ash sampling and detection of power plants, and aims to solve the problems of dust pollution and direct spraying of high-temperature ash samples. Coal ash enters and impacts the filter through the connecting part. The pressure of the coal ash main conveying pipe is greater than the pressure inside the fixed ring. The filter collects coal ash until the filter is blocked. At this time, the air pressure is greater than the elastic force of the reset assembly, thereby driving the filter to move downward, so that the inner container filter screen is exposed. At this time, the gas preferentially passes through the inner container filter screen and is discharged from the exhaust cavity, avoiding the problem of fly ash. The air impact ring groove heat dissipation barrel is buffered and enters from the inlet, passes through the heat dissipation channel, is buffered and heat-dissipated, and is discharged from the outlet. Then, the heat is dissipated through the heat dissipation disc and is discharged from the support plate to be heat-dissipated and buffered by the ground. The gas is not only subjected to cooling treatment, but also can be buffered. Finally, the gas discharge pressure and temperature are reduced, and the safety is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal ash sampling and detection in power plants, and particularly relates to a pulverized coal ash sampling device of a coal ash conveying system in a thermal power plant. BACKGROUND

[0002] In the coal ash conveying system of a thermal power plant, pulverized coal ash sampling and detection is crucial, because the pulverized coal ash of a thermal power plant is a silvery or grayish powder after the high-temperature combustion of coal in a boiler, which is composed of fine solid or hollow amorphous glass beads and a small amount of carbon, and enters the ash storage through the coal ash conveying system after dust collection. Due to the unique physicochemical properties of the pulverized coal ash and the rich valuable metal elements, the pulverized coal ash is a kind of secondary resource that can be comprehensively utilized. After sampling and testing, the pulverized coal ash can be used in cement plants, mixing stations and other industrial scenes, which not only can create considerable economic benefits, but also can alleviate environmental pollution problems, achieving industrial win-win.

[0003] The current dry pulverized coal ash sampling is to directly branch a sampling branch pipe from the coal ash conveying pipeline, install a manual ball valve on the branch pipe, and then connect a sampling bag below the branch pipe, and open the manual ball valve to sample. This method is simple, but the ash sample in the coal ash conveying pipeline is at a temperature of 100-130 DEG C, and the coal ash conveying compressed air pressure is 0.3-0.4 Mpa. When the manual ball valve is opened, the high-temperature ash sample is directly sprayed out, which has the safety hidden danger of scalding, needs two people to cooperate (one person to receive the sample and the other person to operate the valve), and dust pollution is generated on site.

[0004] The prior art with the publication number CN119064091A discloses a fly ash sampling device and operation method of a pneumatic coal ash conveying pipeline of a thermal power plant, which comprises a coal ash conveying connecting pipe, a feeding pipe, a fly ash separation bin, a fly ash storage bin and an exhaust pipe. The coal ash conveying connecting pipe is provided with a Venturi pipe section, and the first connecting part, the Venturi pipe section and the second connecting part are arranged in sequence along the flow direction of the fly ash. The side wall of the coal ash conveying connecting pipe is provided with a first interface, the feeding pipe is inserted into the first interface, and the end of the feeding pipe is provided with at least two sampling heads. The side wall of the Venturi pipe section is provided with a second interface, the exhaust pipe is connected with the second interface, the fly ash separation bin is connected between the feeding pipe and the exhaust pipe, and the fly ash sampling channel is formed in sequence by the feeding pipe, the fly ash separation bin and the exhaust pipe. The fly ash storage bin is arranged at the lower part of the fly ash separation bin, and a partition plate is movably arranged between the fly ash separation bin and the fly ash storage bin. The fly ash sampling work can be quickly and accurately completed from the coal ash conveying pipeline, and the sample can truly reflect the characteristics of the fly ash. Although the complicated operation of one person receiving the sample and one person operating the valve is solved, the problem of dust pollution and direct spraying of high-temperature ash sample still exists when the sample is received.

[0005] Therefore, a pulverized coal ash sampling device of a coal ash conveying system in a thermal power plant is needed. SUMMARY

[0006] In order to solve all or part of the above problems, the present application aims to provide a fly ash sampling device of a coal-fired power plant ash conveying system, which can solve the problems of dust pollution and direct spraying of high-temperature ash samples.

[0007] To achieve the above object, the present application provides the following technical solution: a fly ash sampling device of a coal-fired power plant ash conveying system, comprising a connecting component and a sampling component, the upper end of the connecting component is connected with a main coal ash conveying pipe, and the lower end of the connecting component is provided with the sampling component, the sampling component comprises a sampling barrel assembly and a filter assembly installed inside the sampling barrel assembly;

[0008] The sampling barrel assembly comprises a sampling barrel and an inner container filter screen installed at the upper end inside the sampling barrel, and the sampling barrel and the inner container filter screen form an exhaust cavity, the filter assembly comprises a bearing frame and a reset component installed at the lower end of the bearing frame, the bearing frame is matched with the inside of the inner container filter screen, the upper end of the bearing frame is provided with a filter piece, and the filter piece is matched with the inside of the bearing frame;

[0009] The lower end of the sampling barrel assembly is further provided with a support assembly, the inside of the support assembly is provided with a ring groove heat dissipation barrel, an inlet, a heat dissipation channel and an outlet are formed in the ring groove heat dissipation barrel, the inlet, the heat dissipation channel and the outlet are communicated with each other, the inside of the support assembly at the lower end of the ring groove heat dissipation barrel is provided with a heat dissipation disc, and the lower end of the support assembly is further provided with a support plate.

[0010] Further, the connecting component comprises a solenoid valve pipe and a spring pipe installed at the lower end of the solenoid valve pipe, the upper end of the solenoid valve pipe is connected with the main coal ash conveying pipe, the connecting component comprises a connecting ring and a fixed ring rotatably installed at the upper end inside the connecting ring, and the upper end outside of the sampling barrel is threadedly connected with the connecting ring.

[0011] Further, the reset component comprises an elastic sensing assembly and a fixing frame installed at the lower end of the elastic sensing assembly, the outside of the fixing frame is fixedly connected with the sampling barrel, the elastic sensing assembly comprises a connecting outer pipe and a reset spring installed inside the connecting outer pipe, the upper end of the connecting outer pipe is fixedly connected with the lower end of the bearing frame, a support inner pipe is movably arranged inside the connecting outer pipe, the lower end of the support inner pipe is fixedly connected with the fixing frame, the lower end of the reset spring is fixedly connected with the upper end of the support inner pipe, a pressure sensor is installed at the upper end of the support inner pipe, and the pressure sensor is located inside the reset spring, a trigger pipe is installed inside the connecting outer pipe, the trigger pipe is located inside the reset spring, and the lower end of the trigger pipe corresponds to the pressure sensor.

[0012] Further, the upper end of the fixed ring is fixedly connected with the lower end of the spring tube, a sealing groove is formed in the inner side of the lower end of the fixed ring, a plurality of pressure discharge holes are formed in the upper end of the sealing groove, one end of the pressure discharge hole is communicated with the sealing groove and the other end is communicated with the inner side of the fixed ring, a sealing ring is installed on the upper end of the sampling barrel located in the exhaust cavity, the sealing ring is matched with the sealing groove, a through hole is formed in the sealing ring, and the through hole is communicated with the exhaust cavity.

[0013] Further, the filter assembly is installed with an anti-blocking assembly, the anti-blocking assembly comprises a center ring and a plurality of rolling balls movably embedded in the inner side wall of the center ring, a support frame is fixedly installed in the inner side of the fixed frame, a center column is installed on the upper end of the middle part of the support frame, a spiral groove is formed in the upper end of the center column, the spiral groove is matched with the center ring, a plurality of anti-blocking pieces are installed on the outer side of the center ring, the lower side of the anti-blocking piece is matched with the filter piece, and the side of the anti-blocking piece away from the center ring is matched with the inner side of the filter screen of the inner container.

[0014] Further, the support assembly comprises a support barrel, a support ring groove is formed in the inner side of the upper end of the support barrel, a movable ring is installed on the lower end of the sampling barrel, the lower end of the movable ring is matched with the support ring groove, a spring is arranged on the inner side of the bottom of the support ring groove, the lower end of the spring is fixedly connected with the support barrel, and the upper end of the spring is fixedly installed with a support ring, the upper side of the support ring is matched with the lower side of the movable ring.

[0015] Further, the input end of the inlet is communicated with the inner side of the sampling barrel, the output end of the inlet is communicated with the input end of the heat dissipation channel, the heat dissipation channel is arranged in a spiral shape, the output end of the heat dissipation channel is communicated with the input end of the outlet, the output end of the outlet is communicated with the inner lower end of the support assembly, a plurality of heat dissipation holes are formed in the heat dissipation disc, the inner heart of the heat dissipation disc is hollow and water is injected in the inside, and a controller is installed on the outer side of the support barrel.

[0016] A support plate is installed on the lower end of the support barrel, a plurality of exhaust holes are formed in the middle part of the support plate, the upper end of the exhaust hole is communicated with the heat dissipation hole, and moving wheels are further installed on the lower end of the support plate.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] 1. The coal ash sampling device of a coal ash conveying system of a thermal power plant is provided, coal ash enters and impacts the filter from the connecting part, the pressure of the coal ash main conveying pipe is greater than the pressure inside the fixed ring, the filter collects coal ash until the filter is completely blocked, at this time, the air pressure is greater than the elastic force of the reset assembly, thereby driving the filter to move downward, so that the inner container filter screen is exposed, at this time, the gas preferentially passes through the inner container filter screen and is discharged from the exhaust cavity, not only the coal ash is filtered on the upper end inside the sampling barrel and cannot be discharged together with the air, thereby avoiding the fly ash problem, but also a large amount of coal ash is accumulated in the upper space surrounded by the inner container filter screen and the filter when the filter moves downward, thereby facilitating mass sampling and improving the one-time sampling speed.

[0019] 2. The coal ash sampling device of a coal ash conveying system of a thermal power plant is provided, the air impact ring groove heat dissipation barrel is buffered, enters from the inlet, is buffered and heat dissipated through the heat dissipation channel, is then heat dissipated through the heat dissipation disc and discharged from the support plate to be heat dissipated and buffered by the ground, not only the gas is subjected to cooling treatment, but also the gas can be buffered, finally the gas discharge pressure and temperature are reduced, and the safety is high. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole three-dimensional structure schematic view of the coal ash sampling device of a coal ash conveying system of a thermal power plant after installation.

[0021] Figure 2 It is a connecting piece three-dimensional structure schematic view of the coal ash sampling device of a coal ash conveying system of a thermal power plant.

[0022] Figure 3 It is a sampling part utilization structure schematic view of the coal ash sampling device of a coal ash conveying system of a thermal power plant.

[0023] Figure 4 It is a sampling barrel assembly inside mechanism cut three-dimensional structure schematic view of the coal ash sampling device of a coal ash conveying system of a thermal power plant.

[0024] Figure 5 It is a sampling barrel assembly inside mechanism split structure schematic view of the coal ash sampling device of a coal ash conveying system of a thermal power plant.

[0025] Figure 6 It is an elastic sensing assembly three-dimensional structure schematic view of the coal ash sampling device of a coal ash conveying system of a thermal power plant.

[0026] Figure 7 It is a filter and anti-blocking assembly three-dimensional structure schematic view of the coal ash sampling device of a coal ash conveying system of a thermal power plant.

[0027] Figure 8This is a three-dimensional structural diagram of the annular groove heat dissipation tank, heat dissipation plate, and support plate of the fly ash sampling device of the fly ash conveying system of a thermal power plant according to the present invention.

[0028] Figure 9 This is a schematic diagram of the inner planar structure of the annular groove heat dissipation tank of the fly ash sampling device in the ash conveying system of a thermal power plant according to the present invention.

[0029] In the picture:

[0030] 1. Solenoid valve tube; 2. Bourdon tube; 3. Connector; 31. Connecting ring; 32. Fixing ring; 321. Sealing groove; 322. Pressure relief hole; 4. Sampling bucket assembly; 41. Sampling bucket; 411. Exhaust cavity; 42. Inner liner filter screen; 43. Sealing ring; 431. Through hole; 44. Movable ring; 5. Filter assembly; 51. Support frame; 52. Elastic sensing assembly; 521. Connecting outer tube; 522. Return spring; 523. Supporting inner tube; 524. Pressure sensor; 525. Trigger tube; 53. 54. Fixed frame; 6. Filter element; 7. Anti-clogging component; 8. Central ring; 9. Ball bearing; 10. Central column; 11. Spiral groove; 2. Support frame; 3. Anti-clogging plate; 4. Support component; 5. Support barrel; 6. Support ring groove; 7. Spring; 8. Support ring; 9. Ring groove heat dissipation barrel; 10. Inlet; 11. Heat dissipation channel; 12. Outlet; 13. Heat dissipation plate; 14. Controller; 15. Heat dissipation hole; 16. Support plate; 17. Exhaust hole; 18. Casters; 19. Main coal ash conveying pipe. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1 As shown, a fly ash sampling device for a thermal power plant ash conveying system includes a connecting component and a sampling component. The upper end of the connecting component is connected to the main fly ash conveying pipe 11. The connection method can be fixed welding or detachable connection, mainly to ensure the connection is sealed. The sampling component is installed at the lower end of the connecting component.

[0033] like Figure 1As shown in the figure, the connecting component includes an electromagnetic valve pipe 1 and a spring pipe 2 installed at the lower end of the electromagnetic valve pipe 1, the electromagnetic valve pipe 1 is composed of a tapered pipe and an electromagnetic valve, the smaller diameter end of the tapered pipe is connected with the main ash conveying pipe 11, the larger diameter end of the tapered pipe is fixedly connected with the upper end of the spring pipe 2, the spring pipe 2 is convenient to extend, so that the connecting piece 3 installed at the lower end of the spring pipe 2 can be extended and connected with the sampling component, which is convenient for manual quick and simple connection operation.

[0034] As shown in the figure, Figures 2-4 The connecting piece 3 includes a connecting ring 31 and a fixing ring 32 rotatably installed at the upper end of the inner side of the connecting ring 31, the sampling bucket assembly 4 includes a sampling bucket 41 and an inner container filter screen 42 installed at the upper end of the inner side of the sampling bucket 41, the upper end of the outer side of the sampling bucket 41 is detachably and sealingly connected with the inner side of the connecting ring 31, and the preferred dismounting mode is threaded connection, when sampling is needed, the sampling component is moved to the lower end of the connecting ring 31, the threaded connection between the connecting ring 31 and the upper end of the sampling bucket 41 is pulled, so as to facilitate the connection between the connecting component and the sampling component, the operation is simple and quick, and for large power plants having multiple main ash conveying pipes 11, only the connecting ring 31 can be installed on each main ash conveying pipe 11, the ash is taken out after sampling of the previous main ash conveying pipe 11, and then the sampling component is moved to sample the next main ash conveying pipe 11, so that the mechanism installed on the main ash conveying pipe 11 occupies small space and the device has low cost.

[0035] As shown in the figure, Figures 3-5 The sampling bucket 41 and the inner container filter screen 42 form an exhaust cavity 411, the lower end of the exhaust cavity 411 is in communication with the inner side of the sampling bucket 41 through a through groove without obstruction; the filtering assembly 5 includes a bearing frame 51 and a reset assembly installed at the lower end of the bearing frame 51, the bearing frame 51 is matched with the inner side of the inner container filter screen 42, the upper end of the bearing frame 51 is provided with a filter piece 54, the filter piece 54 is matched with the inner side of the bearing frame 51, the filter piece 54 can be placed on the bearing frame 51, so as to facilitate replacement of the filter piece 54.

[0036] Specifically, when sampling detection is needed, the connecting component and the sampling component are connected, and the electromagnetic valve pipe 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, and then the coal ash enters the inside of the sampling barrel 41 and impacts the filter piece 54. The filter piece 54 filters out the coal ash heat while the air penetrates out. As the filter piece 54 continuously accumulates the coal ash, the filter piece 54 is blocked. At this time, the air pressure is greater than the elastic force of the reset assembly, and then the filter piece 54 is driven to move downward, so that the inner container filter screen 42 is exposed. At this time, the gas penetrates through the inner container filter screen 42 first, and is discharged from the exhaust cavity 411. In this way, until the reset assembly reaches the limit, the coal ash collection is completed. Not only is the coal ash filtered on the upper end inside the sampling barrel 41, but also will not be discharged together with the air to avoid the fly ash problem. In addition, as the filter piece 54 moves downward, a large amount of coal ash will accumulate in the upper end space surrounded by the inner container filter screen 42 and the filter piece 54, which is convenient for a large amount of sampling and improves the one-time sampling speed.

[0037] It should be noted that after sampling is completed, the filter piece 54 can be removed from the bearing frame 51 for replacement, so as to ensure the filtering effect of the secondary use filter piece 54. When the filter piece 54 is used for the second time, the air penetrating through the inner container filter screen 42 from the upper side of the filter piece 54 will impact the inner container filter screen 42 located on the lower side of the filter piece 54 in the reverse direction through the exhaust cavity 411, thereby automatically preventing the blockage.

[0038] As shown in Figures 4-6 The reset assembly includes an elastic sensing assembly 52 and a fixed frame 53 installed at the lower end of the elastic sensing assembly 52. The outer side of the fixed frame 53 is fixedly connected with the sampling barrel 41.

[0039] The elastic sensing assembly 52 includes a connecting outer pipe 521 and a reset spring 522 installed inside the connecting outer pipe 521. The upper end of the connecting outer pipe 521 is fixedly connected with the lower end of the bearing frame 51. A supporting inner pipe 523 is movably arranged inside the connecting outer pipe 521. The lower end of the supporting inner pipe 523 is fixedly connected with the fixed frame 53. The lower end of the reset spring 522 is fixedly connected with the upper end of the supporting inner pipe 523. A pressure sensor 524 is installed at the upper end of the supporting inner pipe 523 and located inside the reset spring 522. A trigger pipe 525 is installed inside the connecting outer pipe 521. The trigger pipe 525 is located inside the reset spring 522 and has a length smaller than that of the connecting outer pipe 521. The lower end of the trigger pipe 525 corresponds to the pressure sensor 524.

[0040] During the sampling process, the reset spring 522 is extruded to have an upward thrust on the bearing frame 51, so that the bearing frame 51 can slowly move downward, and the coal ash can penetrate through the inner container filter screen 42. When the bearing frame 51 is pressed to the limit, the trigger pipe 525 triggers the pressure sensor 524. The sensing of the pressure sensor 524 causes the electromagnetic valve pipe 1 to be automatically closed, and the sampling is completed.

[0041] When the sampling is completed, the sampling barrel 41 is removed, the coal ash is poured out, and the reset spring 522 is reset for secondary use. The carrier frame 51 can scrape the coal ash accumulated on the inner wall of the inner filter screen 42 to facilitate centralized treatment.

[0042] Further, as shown in Figure 2 and Figure 4 , the upper end of the fixed ring 32 is fixedly connected with the lower end of the spring pipe 2, the inner side of the lower end of the fixed ring 32 is provided with a sealing groove 321, a plurality of pressure discharge holes 322 are provided on the fixed ring 32 at the upper end of the inner side of the sealing groove 321, one end of the pressure discharge hole 322 communicates with the sealing groove 321 and the other end communicates with the inner side of the fixed ring 32;

[0043] The sampling barrel 41 at the upper end of the exhaust cavity 411 is provided with a sealing ring 43, the sealing ring 43 is matched with the sealing groove 321, the sealing ring 43 is provided with a through hole 431, and the through hole 431 communicates with the exhaust cavity 411.

[0044] Specifically, after the connecting part and the sampling part are connected, the sealing ring 43 is inserted into the inner side of the pressure discharge hole 322 to play 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 part is removed, at this time the cavity surrounded by the upper end of the sampling barrel 41 and the inner side of the lower end of the connecting part is still in a high pressure state, at this time the connecting ring 31 is rotated to separate the connecting part and the sampling part, at the same time the sealing ring 43 is separated from the pressure discharge hole 322, the coal ash enters the pressure discharge 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 part is depressurized, avoiding the high pressure coal ash in the cavity from being sprayed out when the connecting part and the sampling part are disassembled, ensuring safety.

[0045] In order to further improve the amount of coal ash borne on the upper end of the filter assembly 5, as shown in Figures 4-5 and Figure 7 , the filter assembly 5 is provided with an anti-blocking assembly 6, the anti-blocking assembly 6 includes a center ring 61 and a rolling 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 on the upper end of the middle part of the support frame 65, a spiral groove 64 is provided on the upper end of the center column 63, the spiral groove 64 is matched with the center ring 61, a plurality of anti-blocking pieces 66 are installed on the outer side of the center ring 61, the lower side of the anti-blocking piece 66 is attached to the filter piece 54, and the side of the anti-blocking piece 66 away from the center ring 61 is attached to the inner side of the inner filter screen 42.

[0046] When the filter assembly 5 is pushed under pressure, the center ring 61 is moved downward, and under the matching effect of the ball 62 and the spiral groove 64, the spiral groove 64 promotes the ball 62 to drive the center ring 61 to rotate, and the rotation of the center ring 61 in turn 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 piece 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 container filter screen 42, and finally a large amount of coal ash can be collected, so that the diameter of the sampling component is reduced while ensuring that the amount of coal ash collected at one time can meet the standard.

[0047] As shown in Figure 1 and Figure 8 , the lower side of the sampling bucket assembly 4 is provided with a supporting assembly 7, and the supporting assembly 7 comprises a supporting bucket 71. The upper end of the supporting bucket 71 is provided with a supporting ring groove 711 on the inner side. The lower end of the sampling bucket 41 is provided with a movable ring 44. The lower end of the movable ring 44 is matched with the supporting ring groove 711. The inner side of the bottom of the supporting ring groove 711 is provided with a spring 72. The lower end of the spring 72 is fixedly connected with the supporting bucket 71. The upper end of the spring 72 is fixedly provided with a supporting ring 73. The upper side of the supporting ring 73 is matched with the lower side of the movable ring 44. Not only is the sampling bucket assembly 4 convenient to take out alone, but also the spring 72 makes the supporting ring 73 and the movable ring 44 fit to improve the sealing effect.

[0048] As shown in Figure 1 and Figures 8-9 , a ring groove heat dissipation bucket 8 is installed on the inner side of the supporting bucket 71. The ring groove heat dissipation bucket 8 is composed of an outer shell and a refrigerator arranged on the inner side of the outer shell. The outer shell is provided with an inlet 81, a heat dissipation channel 82 and an outlet 83. The input end of the inlet 81 is communicated with the inner side of the sampling bucket 41. The output end of the inlet 81 is communicated with the input end of the heat dissipation channel 82. The heat dissipation channel 82 is arranged in a spiral shape and is wrapped on the outer side of the refrigeration end of the refrigerator. The output end of the heat dissipation channel 82 is communicated with the input end of the outlet 83. The output end of the outlet 83 is communicated with the inner lower end of the supporting bucket 71.

[0049] Specifically, when the high-pressure gas discharged from the sampling bucket assembly 4 impacts the ring groove heat dissipation bucket 8, the upper surface of the ring groove heat dissipation bucket 8 is mostly closed, which can buffer the high-pressure gas once, and then the high-pressure gas enters the heat dissipation channel 82 from the inlet 81 and is discharged from the outlet 83. The annular heat dissipation channel 82 not only facilitates the reduction of gas temperature by the refrigerator, but also can buffer the gas and reduce the gas discharge pressure.

[0050] As shown in Figure 1 and Figure 8As shown, the inner side of the support barrel 71 at the lower end of the annular groove heat dissipation barrel 8 is provided with a heat dissipation disc 9, a plurality of heat dissipation holes 92 are formed in the heat dissipation disc 9, the heat dissipation disc 9 is hollow and filled with water, the heat dissipation holes 92 penetrate the heat dissipation disc 9 and are not in communication with the water, and a controller 91 is mounted on the outer side of the support barrel 71 and electrically connected with the refrigerating device, the pressure sensor 524 and the electromagnetic valve.

[0051] The lower end of the support barrel 71 is provided with a support plate 10, a plurality of exhaust holes 101 are formed in the middle of the support plate 10, the upper end of the exhaust hole 101 is in communication with the heat dissipation hole 92, and a moving wheel 102 is further mounted at the lower end of the support plate 10, which facilitates the movement of the entire sampling component.

[0052] The gas discharged from the outlet 83 enters the heat dissipation hole 92 for secondary heat dissipation, the inner side of the heat dissipation disc 9 is designed to be filled with water, so that the water can dissipate heat from the gas, and the water temperature will decrease when the device is used again, which not only facilitates the repeated use of the gas dissipation, but also adjusts the refrigeration temperature of the refrigerating device to cooperate with the water to reach the final 20-30 degrees Celsius, reduces the power consumption of the refrigerating device, saves costs, and further, the gas in the heat dissipation hole 92 is discharged from the exhaust hole 101 and impacts the ground, the ground can also absorb a small amount of heat, and further, the gas can be further buffered and dispersed, so that even if it impacts the human body, it will not cause damage to the human body, and finally the problem of direct spraying of high-temperature ash samples is solved.

[0053] It should be noted that in the description of the present application, it should be understood that the terms "length", "thickness", "inner", "outer", "axial", "radial", etc. indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0054] In addition, the relationship terms such as first and second, etc. are only used 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 the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0055] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, should be covered within the protection scope of the present application.

Claims

1. A fly ash sampling device for a fly ash conveying system of a thermal power plant, comprising a connecting part and a sampling part, the upper end of the connecting part being connected to a main fly ash conveying pipe (11), and the lower end of the connecting part being provided with the sampling part, characterized in that, The sampling component comprises a sampling bucket assembly (4) and a filter assembly (5) installed inside the sampling bucket assembly (4); The sampling bucket assembly (4) comprises a sampling bucket (41) and an inner container filter screen (42) installed at the upper end inside the sampling bucket (41), and the sampling bucket (41) and the inner container filter screen (42) form an exhaust cavity (411); the filter assembly (5) comprises a bearing frame (51) and a reset assembly installed at the lower end of the bearing frame (51), the bearing frame (51) is matched with the inside of the inner container filter screen (42), and a filter piece (54) is installed at the upper end of the bearing frame (51) and matched with the inside of the bearing frame (51). The lower end of the sampling bucket assembly (4) is further provided with a support assembly (7), the inside of the support assembly (7) is provided with a ring groove heat dissipation bucket (8), the ring groove heat dissipation bucket (8) is provided with an inlet (81), a heat dissipation channel (82) and an outlet (83), the inlet (81), the heat dissipation channel (82) and the outlet (83) are communicated with each other, the inside of the support assembly (7) at the lower end of the ring groove heat dissipation bucket (8) is provided with a heat dissipation disc (9), and the lower end of the support assembly (7) is further provided with a support plate (10). The coal ash enters the connecting component and impacts the filter piece (54), the pressure of the coal ash main conveying pipe (11) is greater than the pressure inside the fixed ring (32), the filter piece (54) collects the coal ash until the filter piece (54) is completely blocked, at this time, the air pressure is greater than the elastic force of the reset assembly, so as to drive the filter piece (54) to move downward, so that the inner container filter screen (42) is exposed, at this time, the gas preferentially passes through the inner container filter screen (42) and is discharged from the exhaust cavity (411), the air impact ring groove heat dissipation bucket (8) is buffered and enters the inlet (81), passes through the heat dissipation channel (82) for buffering and heat dissipation, and is discharged from the outlet (83), and then is heat dissipated through the heat dissipation disc (9) and discharged from the support plate (10) to be heat dissipated and buffered by the ground.

2. A fly ash sampling device for a fly ash handling system of a thermal power plant as claimed in claim 1, wherein, The connecting component comprises an electromagnetic valve pipe (1) and a spring pipe (2) installed at the lower end of the electromagnetic valve pipe (1), the upper end of the electromagnetic valve pipe (1) is connected with the coal ash main conveying pipe (11), the connecting piece (3) comprises a connecting ring (31) and a fixed ring (32) rotatably installed at the upper end inside the connecting ring (31), and the outer side of the upper end of the sampling bucket (41) is threadedly connected with the connecting ring (31).

3. A fly ash sampling device for a coal-fired power plant ash handling system as recited in claim 1, wherein, The reset assembly comprises an elastic sensing assembly (52) and a fixed frame (53) installed at the lower end of the elastic sensing assembly (52), and the outer side of the fixed frame (53) is fixedly connected with the sampling bucket (41).

4. A fly ash sampling device for a fly ash handling system of a thermal power plant as claimed in claim 3, wherein, The elastic sensing assembly (52) comprises a connecting outer tube (521) and a reset spring (522) mounted on the inner side of the connecting outer tube (521), the upper end of the connecting outer tube (521) is fixedly connected with the lower end of the bearing frame (51), the inner side of the connecting outer tube (521) is movably provided with a supporting inner tube (523), the lower end of the supporting inner tube (523) is fixedly connected with the fixed frame (53), the lower end of the reset spring (522) is fixedly connected with the upper end of the supporting inner tube (523), the upper end of the supporting inner tube (523) is further provided with a pressure sensor (524), and the pressure sensor (524) is located on the inner side of the reset spring (522), the inner side of the connecting outer tube (521) is further provided with a trigger tube (525), the trigger tube (525) is located on the inner side of the reset spring (522), and the lower end of the trigger tube (525) corresponds to the pressure sensor (524).

5. A fly ash sampling device for a coal-fired power plant ash handling system as recited in claim 1, wherein, The upper end of the fixed ring (32) is fixedly connected with the lower end of the spring tube (2), the inner side of the lower end of the fixed ring (32) is provided with a sealing groove (321), a plurality of pressure discharge holes (322) are formed in the fixed ring (32) on the inner side of the upper end of the sealing groove (321), one end of the pressure discharge hole (322) is in communication with the sealing groove (321) and the other end is in communication with the inner side of the fixed ring (32); The sampling barrel (41) located on the upper end of the exhaust cavity (411) is provided with a sealing ring (43), the sealing ring (43) is matched with the sealing groove (321), the sealing ring (43) is provided with a through hole (431), and the through hole (431) is in communication with the exhaust cavity (411).

6. A fly ash sampling device for a coal-fired power plant ash handling system as recited in claim 1, wherein, The filter assembly (5) is provided with an anti-blocking assembly (6), the anti-blocking assembly (6) comprises a center ring (61) and a plurality of balls (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 on the upper end of the middle part of the support frame (65), a spiral groove (64) is formed in the upper end of the center column (63), the spiral groove (64) is matched with the center ring (61), a plurality of anti-blocking pieces (66) are installed on the outer side of the center ring (61), the lower side of the anti-blocking piece (66) is matched with the filter element (54), and the side of the anti-blocking piece (66) away from the center ring (61) is matched with the inner side of the inner container filter screen (42).

7. A fly ash sampling device for a coal-fired power plant ash handling system as recited in claim 1, wherein, The support assembly (7) comprises a support barrel (71), a support ring groove (711) is formed in the inner side of the upper end of the support barrel (71), a movable ring (44) is installed on the lower end of the sampling barrel (41), the lower end of the movable ring (44) is matched with the support ring groove (711), a spring (72) is arranged on the inner side of the bottom of the support ring groove (711), the lower end of the spring (72) is fixedly connected with the support barrel (71), the upper end of the spring (72) is fixedly installed with a support ring (73), and the upper side of the support ring (73) is matched with the lower side of the movable ring (44).

8. A fly ash sampling device for a coal-fired power plant ash handling system as recited in claim 1, wherein, The input end of the inlet (81) is communicated with the inner side of the sampling barrel (41), the output end of the inlet (81) is communicated with the input end of the heat dissipation channel (82), the heat dissipation channel (82) is spirally arranged, the output end of the heat dissipation channel (82) is communicated with the input end of the outlet (83), and the output end of the outlet (83) is communicated with the inner lower end of the supporting assembly (7).

9. A fly ash sampling device for a coal-fired power plant ash handling system as recited in claim 1, wherein, A plurality of heat dissipation holes (92) are formed in the heat dissipation disc (9), the inner core of the heat dissipation disc (9) is hollow and filled with water, and a controller (91) is installed on the outer side of the supporting barrel (71).

10. A fly ash sampling device for a coal-fired power plant ash handling system as recited in claim 9, wherein, The lower end of the supporting barrel (71) is provided with a supporting plate (10), a plurality of exhaust holes (101) are formed in the middle of the supporting plate (10), the upper end of the exhaust hole (101) is communicated with the heat dissipation hole (92), and the lower end of the supporting plate (10) is provided with a moving wheel (102).

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