Fuel sampling device for thermal power plant

Abstract

The utility model belongs to the technical field of thermal power plant sampling, and particularly relates to a thermal power plant fuel sampling device which comprises a cyclone separator body, an air inlet pipe, an air outlet pipe and a hopper, a connector is installed at one end of the air inlet pipe, a pulverized coal sampling gun is connected to the inner wall of the connector in a clamped mode, and a rotating ring is installed on the middle section of the pulverized coal sampling gun. The rotating ring is rotationally connected with the pulverized coal sampling gun, two supporting rings are rotationally connected to the inner wall of the pulverized coal sampling gun, and the supporting rings are connected through a connecting rod; through rotation of the rotating ring, the supporting ring, the fixing frames, the connecting rod and the scraping plate can be driven to synchronously rotate, when the purging valve is used for cleaning residual pulverized coal in the pulverized coal sampling gun, the scraping plate can comprehensively scrape the pulverized coal on the inner wall of the pulverized coal sampling gun, and the scraping plate can be taken out from the fixing frames for cleaning, so that it is ensured that the pulverized coal is thoroughly cleaned; and the influence of the residual pulverized coal on the next sampling is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of sampling technology for thermal power plants, and specifically relates to a fuel sampling device for thermal power plants. Background Technology

[0002] Fuel sampling is a crucial step in ensuring stable boiler combustion and controlling emissions during the operation of thermal power plants. Traditional fuel sampling devices have several problems in pulverized coal sampling. For example, after pulverized coal collection, a significant amount of pulverized coal often remains inside the sampling gun. If this residual pulverized coal is not cleaned promptly, it can be mixed with newly collected pulverized coal during subsequent sampling, affecting the accuracy of the sampling and consequently negatively impacting subsequent fuel analysis and combustion control. Furthermore, existing devices often struggle to achieve a comprehensive and thorough cleaning of residual pulverized coal, and the operation is relatively cumbersome. Utility Model Content

[0003] This invention provides a fuel sampling device for thermal power plants, which solves the problem of long sampling guns and difficulty in thoroughly cleaning coal dust.

[0004] This utility model provides the following technical solution: it includes a cyclone separator body, an air inlet pipe, an air outlet pipe, and a hopper. A connector is installed at one end of the air inlet pipe. A coal powder sampling gun is engaged with the inner wall of the connector. A rotating ring is installed in the middle section of the coal powder sampling gun. The rotating ring is rotatably connected to the coal powder sampling gun. Two support rings are rotatably connected to the inner wall of the coal powder sampling gun. The support rings are connected to each other by a connecting rod. The support rings and the connecting rod are connected by a fixing frame. A scraper is slidably connected to the inner wall of the fixing frame. Several mounting blocks opposite to the scraper are fixedly connected to the outer wall of the rotating ring. Several sliding rods engaged with the outer end of the scraper are slidably connected to the mounting blocks.

[0005] The coal powder sampling gun is fixedly connected to the connector with several locking blocks, and the inner wall of the connector is provided with locking grooves that match the locking blocks.

[0006] The coal powder sampling gun has two fixed rings fixedly connected to its outer wall, and a connecting plate is fixedly connected to the outer wall of each fixed ring. The connecting plates are connected to each other by a fixed rod.

[0007] The support ring and the fixing frame are provided with interconnected limiting grooves, and the scraper is fixedly connected to limiting blocks that match the limiting grooves at both ends.

[0008] The mounting block and the rotating ring are provided with interconnected sliding holes, the sliding rod is slidably connected to the sliding holes, and a support plate is fixedly connected to one end of the sliding rod.

[0009] The beneficial effects of this utility model are: by rotating the rotating ring, the support ring, the fixed frame, the connecting rod and the scraper can be driven to rotate synchronously. When using the purge valve to clean the residual coal powder in the coal powder sampling gun, the scraper can scrape the coal powder on the inner wall of the coal powder sampling gun. The scraper can also be removed from between the fixed frames for cleaning, ensuring that the coal powder is thoroughly cleaned and avoiding the impact of residual coal powder on the next sampling.

[0010] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a three-dimensional structural diagram of the scraper in this utility model;

[0013] Figure 3 This is a cross-sectional structural diagram of the coal powder sampling gun and rotating ring in this utility model;

[0014] Figure 4 This utility model Figure 3 An enlarged diagram of A in the diagram.

[0015] In the diagram: 1. Cyclone separator body; 11. Inlet pipe; 12. Outlet pipe; 13. Hopper; 2. Connector; 21. Coal powder sampling gun; 22. Clamping block; 23. Fixing ring; 24. Connecting plate; 25. Fixing rod; 3. Rotating ring; 31. Support ring; 32. Fixing frame; 321. Limiting groove; 33. Connecting rod; 34. Scraper; 341. Limiting block; 35. Mounting block; 36. Sliding rod; 361. Sliding hole; 37. Support plate. Detailed Implementation

[0016] Please see Figures 1-4 The present invention provides the following technical solution: including a cyclone separator body 1, an air inlet pipe 11, an air outlet pipe 12, and a hopper 13. A connector 2 is installed at one end of the air inlet pipe 11. A coal powder sampling gun 21 is engaged with the inner wall of the connector 2. A rotating ring 3 is installed in the middle section of the coal powder sampling gun 21. The rotating ring 3 is rotatably connected to the coal powder sampling gun 21. Two support rings 31 are rotatably connected to the inner wall of the coal powder sampling gun 21. The support rings 31 are connected to each other by a connecting rod 33. The support rings 31 and the connecting rod 33 are connected by a fixing frame 32. A scraper 34 is slidably connected to the inner wall of the fixing frame 32. Several mounting blocks 35 are fixedly connected to the outer wall of the rotating ring 3 to be used opposite to the scraper 34. Several sliding rods 36 that engage with the outer end of the scraper 34 are slidably connected to the mounting blocks 35.

[0017] In this implementation scheme: The cyclone separator body 1, during use, is connected to the connector 2 and the coal powder sampling gun 21 via the air inlet pipe 11. This allows the cyclone separator body 1, when connected to the ejector, to generate power so that one end of the coal powder sampling gun 21 can connect to the sampler ball valve installed on the coal powder pipeline. After opening the valve, coal powder can enter the cyclone separator body 1 through the coal powder sampling gun 21. The cyclone separator separates the coal powder from the air, and the separated air is discharged through the air outlet pipe 12. Finally, the coal powder... The sample is collected into the hopper 13. After sampling, due to its length, the coal powder sampling gun 21 will have a significant amount of coal powder remaining in its inner cavity. To avoid affecting the next coal powder collection and to prevent coal powder mixing, a rotating ring 3 is rotatably connected to the middle section of the coal powder sampling gun 21. The rotating ring 3 rotates with the coal powder sampling gun 21, dividing the coal powder sampling gun 21 into two parts. The rotating ring 3 is rotatably connected to one end of each of the two parts. At this time, the support ring 31 rotatably connected to the inner wall of the coal powder sampling gun 21 can be connected to the fixed frame 32 and the connecting rod 33. The components are integrated, with the support ring 31 and the fixing frame 32 sliding and rotating within the cavity of the coal powder sampling gun 21. At this time, one end of the scraper 34, slidably connected to the inner wall of the fixing frame 32, can be supported on the inner wall of the coal powder sampling gun 21. The rotating ring 3 can engage with one end of the scraper 34 via the sliding rod 36 slidably connected to the mounting block 35. When the rotating ring 3 rotates, it drives the support ring 31, fixing frame 32, connecting rod 33, and scraper 34 to rotate synchronously. This allows the residual coal powder inside the coal powder sampling gun 21 to be blown out via a purge valve or other means, thus allowing the rotating ring 3 to... Rotation causes the scraper 34 to scrape the coal powder on the inner wall of the coal powder sampling gun 21, facilitating a thorough cleaning of the coal powder inside the sampling gun 21. This ensures complete cleaning of the coal powder inside the sampling gun 21. Simultaneously, the slide bar 36 slides outward, allowing the support ring 31, fixing frame 32, connecting rod 33, and scraper 34 to slide out of the coal powder sampling gun 21. The scraper 34 then slides out of the inner wall of the fixing frame 32, allowing it to separate independently and be cleaned separately. This facilitates individual sampling of coal powder and avoids confusion.

[0018] Several locking blocks 22 are fixedly connected at the connection between the coal powder sampling gun 21 and the connector 2. The inner wall of the connector 2 has a locking groove that matches the locking blocks 22. The locking blocks 22 fixedly connected at the connection between the coal powder sampling gun 21 and the connector 2 are used to engage in the locking grooves opened in the inner wall of the connector 2, so that the coal powder sampling gun 21 can be engaged and connected to the connector 2, so that the coal powder sampling gun 21 and the connector 2 can communicate, so that the coal powder can be drawn into the cyclone separator body 1 through the coal powder sampling gun 21.

[0019] Two fixing rings 23 are fixedly connected to the outer wall of the coal powder sampling gun 21. A connecting plate 24 is fixedly connected to the outer wall of the fixing rings 23. The connecting plates 24 are connected to each other by a fixing rod 25. The fixing rings 23 fixedly connected to the outer wall of the coal powder sampling gun 21 can connect and fix the coal powder sampling gun 21 separated by the rotating ring 3 through the connecting plate 24 and the fixing rod 25, so as to avoid separation. At the same time, it can make way for the position of the mounting block 35, the slide rod 36 and the support plate 37, so as to avoid affecting the rotation of the rotating ring 3.

[0020] The support ring 31 and the fixed frame 32 are provided with a connecting limiting groove 321. The scraper 34 is fixedly connected to both ends with limiting blocks 341 that match the limiting groove 321. The limiting groove 321 is used to engage and slide the limiting blocks 341 fixedly connected to both ends of the scraper 34, so that the scraper 34 can be limited to the inner wall of the fixed frame 32, so that it can rotate and scrape the coal powder on the inner wall of the coal powder sampling gun 21. At the same time, the scraper 34 can slide out.

[0021] The mounting block 35 and the rotating ring 3 have interconnected sliding holes 361. The sliding rod 36 is slidably connected to the sliding hole 361, and a support plate 37 is fixedly connected to one end of the sliding rod 36. The sliding hole 361 is used to install the sliding rod 36 so that the sliding rod 36 can be engaged on the scraper 34, so that the rotation of the rotating ring 3 can drive the scraper 34 to rotate. The support plate 37 is used to facilitate the self-rotation adjustment of the rotating ring 3.

[0022] The working principle and usage process of this utility model are as follows: When it is necessary to clean the coal powder on the inner wall of the coal powder gun, the rotating ring 3 can be rotated and connected to one end of the two separated parts. At the same time, the support ring 31, which is rotatably connected to the inner wall of the coal powder sampling gun 21, is connected as a whole by the fixing frame 32 and the connecting rod 33. The support ring 31 and the fixing frame 32 can slide and rotate in the inner cavity of the coal powder sampling gun 21. The rotating ring 3 is engaged with one end of the scraper 34 by the sliding rod 36 slidably connected on the mounting block 35. When the rotating ring 3 rotates, it can drive the support ring 31, the fixing frame 32, the connecting rod 33 and the scraper 34 to rotate synchronously. When the residual coal powder in the coal powder sampling gun 21 is blown out by the purging valve or other means, the scraper 34 can scrape the coal powder on the inner wall of the coal powder sampling gun 21 to achieve comprehensive cleaning.

Claims

1. A fuel sampling device for a thermal power plant, comprising a cyclone separator body (1), an inlet pipe (11), an outlet pipe (12) and a hopper (13), characterized in that: The air inlet pipe (11) one end is mounted with the connector (2), the connector (2) inner wall is connected with the coal powder sampling gun (21), the coal powder sampling gun (21) middle segment is installed with the rotating ring (3), the rotating ring (3) is connected with the coal powder sampling gun (21), the coal powder sampling gun (21) inner wall is rotatably connected with two support rings (31), the support ring (31) is connected through the connecting rod (33) between the support ring (31), the support ring (31) and the connecting rod (33) are connected through the fixing frame (32), the fixing frame (32) inner wall is slidably connected with the scraper (34), the rotating ring (3) outer wall is fixedly connected with a plurality of installation blocks (35) opposite to the scraper (34), the installation block (35) is slidably connected with a plurality of slide rods (36) matched with the outer end of the scraper (34).

2. A fuel sampling device for a fossil fuel power plant according to claim 1, characterized in that: The coal powder sampling gun (21) is connected with the connector (2) and is fixedly connected with a plurality of clamping blocks (22), and the inner wall of the connector (2) is provided with a clamping groove matched with the clamping block (22).

3. A fuel sampling device for a fossil fuel power plant according to claim 1, characterized in that: The coal powder sampling gun (21) is fixedly connected with two fixed rings (23) on the outer wall, and the fixed ring (23) is fixedly connected with the connecting plate (24) on the outer wall, and the connecting plate (24) is connected through the fixed rod (25) between the connecting plate (24).

4. A fuel sampling device for a fossil fuel power plant according to claim 1, characterized in that: The support ring (31) and the fixing frame (32) are provided with a limiting groove (321) connected in communication, and the limiting block (341) matched with the limiting groove (321) is fixedly connected to both ends of the scraper (34).

5. A fuel sampling device for a fossil fuel power plant as claimed in claim 1, wherein: The installation block (35) and the rotating ring (3) are provided with a sliding hole (361) connected in communication, and the sliding rod (36) is slidably connected with the sliding hole (361), and the sliding rod (36) is fixedly connected with the supporting plate (37) at one end.

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