CN-224202840-U - Boiler fly ash sampling device

CN224202840UCN 224202840 UCN224202840 UCN 224202840UCN-224202840-U

Abstract

The application provides a boiler fly ash sampling device which comprises a sampling barrel, an air inlet pipe, an exhaust pipe, a filter screen ash removing mechanism and an ash inlet amount control pipe, wherein the sampling barrel is provided with a first air inlet channel and a first air exhaust channel, a sampling bottle is arranged at the bottom of the sampling barrel, a filter screen is arranged at one end of the first air exhaust channel, which is positioned in the sampling barrel, the air inlet pipe is connected with the first air inlet channel, the exhaust pipe is connected with the first air exhaust channel, the filter screen ash removing mechanism is used for removing ash from the filter screen, and the ash inlet amount control pipe is used for controlling ash inlet amount. In the technical scheme, the sampling efficiency and the sampling precision are improved.

Inventors

GUO PENG
Shi Kangfei
LI YONG
Pan Huaguo
JIA XINPENG
SUN XINGXING
LI WENJING
Guo Yuanshuo

Assignees

徐州华润电力有限公司
铜山华润电力有限公司

Dates

Publication Date: 20260505
Application Date: 20250523

Claims (10)

1. A boiler fly ash sampling device is characterized by comprising a sampling barrel, an air inlet pipe, an exhaust pipe, a filter screen ash cleaning mechanism and an ash inlet amount control pipe, wherein, The sampling barrel is provided with a first air inlet channel and a first air exhaust channel, The bottom of the sampling barrel is provided with a sampling bottle, and one end of the first air extraction channel, which is positioned in the sampling barrel, is provided with a filter screen; the air inlet pipe is connected with the first air inlet channel, and the exhaust pipe is connected with the first air exhaust channel; the filter screen ash removing mechanism is used for removing ash from the filter screen; The ash inlet amount control pipe is used for controlling ash inlet amount.
2. The boiler fly ash sampling device of claim 1, wherein the screen ash removal mechanism comprises a first mounting block, an impeller, and an ash removal plate, wherein, A second air suction channel is arranged in the first mounting block, and the second air suction channel is connected with the first air suction channel; The impeller is arranged in the second air suction channel; the impeller is used for driving the ash cleaning plate.
3. The boiler fly ash sampling device of claim 2, wherein the first mounting block is fixedly connected to a side wall of the sampling bucket.
4. A boiler fly ash sampling apparatus according to claim 3, wherein the impeller is rotatably connected to the first mounting block by a shaft.
5. The boiler fly ash sampling device of claim 4, wherein the ash removal plate is located within the sampling bucket and is positioned opposite the screen.
6. The boiler fly ash sampling device of claim 5, wherein the shaft is rotatably connected to the sampling bucket; A crank-link mechanism is arranged on the rotating shaft, The crank connecting rod mechanism is connected with the ash removal plate and used for driving the ash removal plate to reciprocate up and down.
7. The boiler fly ash sampling device of claim 6, wherein the ash feed amount control tube is connected with the air inlet tube; the ash inlet control pipe is internally provided with a baffle mechanism for adjusting the flow of fly ash.
8. The boiler fly ash sampling device of claim 7, wherein the extraction tube is configured to be coupled to an extraction pump.
9. The boiler fly ash sampling device of claim 8, wherein a return spring is disposed between the ash removal plate and the sampling bucket.
10. The boiler fly ash sampling device of claim 9, wherein the bottom of the sampling bucket is detachably connected to the bucket body of the sampling bucket by threads.

Description

Boiler fly ash sampling device Technical Field The application relates to the technical field of boiler fly ash sampling, in particular to a boiler fly ash sampling device. Background In a thermal power plant, accurate detection of the carbon content of boiler fly ash is important for scientific calculation of the thermal efficiency of the boiler. However, existing fly ash sampling devices have a number of problems. Traditional impact type samplers and integration type samplers have difficulty in meeting the requirements of modern power plants on sampling precision and efficiency. Partial sampling device is in the circumstances that the filter screen was stopped up to the flying ash appears easily in the sampling process, leads to the aspiration pump unable to bleed smoothly, influences sampling efficiency. Moreover, some devices have uncontrollable sampling volumes, poor sampling integrity, and no guarantee of sample representativeness. For example, in a flue duct, when the flow rate of fly ash does not coincide with the flow rate of fly ash in a sampling gun, the sampling result is not representative. Therefore, the development of a novel boiler fly ash sampling device has important practical significance. Disclosure of utility model The application provides a boiler fly ash sampling device which is used for improving sampling efficiency and sampling precision. The application provides a boiler fly ash sampling device, which comprises a sampling barrel, an air inlet pipe, an exhaust pipe, a filter screen ash cleaning mechanism and an ash inlet amount control pipe, wherein, The sampling barrel is provided with a first air inlet channel and a first air exhaust channel, The bottom of the sampling barrel is provided with a sampling bottle, and one end of the first air extraction channel, which is positioned in the sampling barrel, is provided with a filter screen; the air inlet pipe is connected with the first air inlet channel, and the exhaust pipe is connected with the first air exhaust channel; the filter screen ash removing mechanism is used for removing ash from the filter screen; The ash inlet amount control pipe is used for controlling ash inlet amount. According to the technical scheme, the sampling barrel is provided with the first air inlet channel and the first air exhaust channel, the bottom of the sampling barrel is provided with the sampling bottle, one end of the first air exhaust channel, which is positioned in the sampling barrel, is provided with the filter screen, the air inlet pipe is connected with the first air inlet channel, the air exhaust pipe is connected with the first air exhaust channel, the filter screen ash removing mechanism is used for removing ash from the filter screen, and the ash inlet quantity control tube is used for controlling ash inlet quantity, so that sampling efficiency and sampling precision are improved. In a specific embodiment, the filter screen ash removal mechanism comprises a first mounting block, an impeller, and an ash removal plate, wherein, A second air suction channel is arranged in the first mounting block, and the second air suction channel is connected with the first air suction channel; The impeller is arranged in the second air suction channel; the impeller is used for driving the ash cleaning plate. In a specific embodiment, the first mounting block is fixedly connected to a side wall of the sampling bucket. In a specific embodiment, the impeller is rotatably connected to the first mounting block by a shaft. In a specific embodiment, the ash removal plate is located in the sampling barrel and is disposed opposite to the filter screen. In a specific embodiment, the rotating shaft is rotatably connected with the sampling barrel; A crank-link mechanism is arranged on the rotating shaft, The crank connecting rod mechanism is connected with the ash removal plate and used for driving the ash removal plate to reciprocate up and down. In a specific embodiment, the ash inlet amount control pipe is connected with the air inlet pipe; the ash inlet control pipe is internally provided with a baffle mechanism for adjusting the flow of fly ash. In a specific embodiment, the suction pipe is used for being connected with a suction pump. In a specific embodiment, a return spring is disposed between the ash removal plate and the sampling barrel. In a specific embodiment, the bottom of the sampling barrel is detachably connected with the barrel body of the sampling barrel through threads. Drawings Fig. 1 is a schematic structural diagram of a boiler fly ash sampling device according to an embodiment of the present application. The device comprises a 1-sampling barrel, a 2-air inlet pipe, a 3-exhaust pipe, a 4-crank connecting rod mechanism, a 5-return spring, a 6-first air inlet channel, a 7-first air exhaust channel, an 8-sampling bottle, a 9-filter screen, a 10-ash inlet amount control pipe, an 11-baffle mechanism, a 12-first mounting block, a 13-impeller, a 14-ash