CN214096775U - Multi-channel time-sharing control pulverized coal automatic sampling device - Google Patents

Multi-channel time-sharing control pulverized coal automatic sampling device Download PDF

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Publication number
CN214096775U
CN214096775U CN202022624400.3U CN202022624400U CN214096775U CN 214096775 U CN214096775 U CN 214096775U CN 202022624400 U CN202022624400 U CN 202022624400U CN 214096775 U CN214096775 U CN 214096775U
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air
pulverized coal
sampling tube
filter
sampling
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CN202022624400.3U
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梅义忠
朱向钟
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Nanjing Dade Technology Co ltd
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Nanjing Dade Technology Co ltd
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Abstract

The utility model provides a pulverized coal automatic sampling device with multi-channel time-sharing control, which comprises N sampling tube branches, a sampling tube main path, a cyclone separator, a filter and an air extractor, wherein the N sampling tube branches are respectively connected with N pulverized coal pipelines, a first manual ball valve is arranged on each pulverized coal pipeline, and a first electric ball valve is arranged on each sampling tube branch; the sampling pipe branches are connected to a sampling pipe main path, the other end of the sampling pipe main path is connected with a cyclone separator, an ash storage pipe is arranged at an ash falling port of the cyclone separator, and a gate valve is arranged at the bottom of the ash storage pipe; the air-entraining port of the cyclone separator is communicated with the filter, the exhaust port of the filter is connected to the inlet of the high-pressure fan, and the ash discharge port of the filter is communicated with the air extractor; the other end of the air extractor is communicated with any pulverized coal pipeline. The utility model discloses simple structure has realized that only need a sampling device can take a sample a plurality of buggy pipelines, and work efficiency is high, simple to operate.

Description

Multi-channel time-sharing control pulverized coal automatic sampling device
Technical Field
The utility model belongs to the mechanical equipment field, especially, automatic sampling device of buggy of multichannel timesharing control.
Background
The coal quality component on-line detection of the coal-fired power plant has a very important meaning for boiler combustion control, the existing detection technology is based on a gamma ray detection technology and a laser excitation spectrum analysis technology (LIBS), 5-6 coal mills are generally arranged in a coal mill pulverizing system of a large-scale heat-engine plant, and if each coal mill is provided with one coal quality on-line detection device, the cost is too high, so that the coal powder of a plurality of coal mills is required to be sent to the coal quality on-line detection device in a time-sharing mode for component detection, and the equipment cost of the whole unit is controlled. The existing coal powder sampling equipment on the market can only sample coal powder from one coal powder pipeline, but cannot realize the multi-channel time-sharing control coal powder sampling, and the coal sample is sent to the requirement of a coal quality on-line analyzer, thereby realizing the function of measuring the coal powder components output by a plurality of coal mills in a time-sharing manner by one coal quality on-line measuring equipment.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide an automatic sampling device of buggy of multichannel timesharing control, realize only needing a sampling device can take a sample a plurality of buggy pipelines, work efficiency is high, simple to operate.
Realize the utility model discloses the technical solution of purpose does:
a multi-channel time-sharing controlled pulverized coal automatic sampling device comprises N sampling tube branches, a sampling tube main path, a cyclone separator, a filter and an air extractor, wherein N is a positive integer; one end of each sampling tube branch is connected with each of N pulverized coal pipelines, the joints of the pulverized coal pipelines and the sampling tube branches are provided with first manual ball valves, and the sampling tube branches are provided with first electric ball valves; the other ends of the N sampling tube branches are connected to a sampling tube main path, the other end of the sampling tube main path is connected with an air inlet of the cyclone separator, and a second electric ball valve is mounted at the air inlet; an ash storage pipe is arranged at the ash falling port of the cyclone separator, and a gate valve is arranged at the bottom of the ash storage pipe; the air inlet of the cyclone separator is communicated with the air inlet of the filter, and the air outlet of the filter is connected to the inlet of the high-pressure fan; the ash discharge port of the filter is communicated with the air bleed port of the air extractor; the other end of the air extractor is communicated with any pulverized coal pipeline, a third electric ball valve is installed at an air outlet of the air extractor, and a first manual ball valve is installed at the joint of the pulverized coal pipeline and the communicating pipeline.
Further, the utility model discloses an automatic sampling device of buggy of multichannel timesharing control still includes the gas holder that has stored a certain amount of compressed air, and the second solenoid valve is installed to the gas outlet department of gas holder, and the gas holder communicates with the mouth that sweeps of filter.
Further, the utility model discloses an automatic sampling device of buggy of multichannel timesharing control, the ash storage pipe is one section both ends open-ended column pipe.
Further, the utility model discloses an automatic sampling device of buggy of multichannel timesharing control, the outer wall of ash storage pipe are provided with the knocker for it makes ash sample whereabouts wherein to shake ash storage pipe.
Further, the utility model discloses an automatic sampling device of buggy of multichannel timesharing control, the surface of sampling tube branch road and the surface of sampling tube main road all wrap up and have the heat tracing pipeline that is used for the heating.
Further, the utility model discloses an automatic sampling device of buggy of multichannel timesharing control installs the first solenoid valve that is used for controlling the aspirator to open and stop in the intake pipe of aspirator.
Further, the utility model discloses an automatic sampling device of buggy of multichannel timesharing control, cyclone include a separator section of thick bamboo, and its lateral wall is opened there is the air inlet, and open at the top has the bleed mouth, and open at the bottom has the ash hole that falls.
The utility model adopts the above technical scheme to compare with prior art, have following technological effect:
the utility model discloses an automatic sampling device of buggy of multichannel timesharing control simple structure only needs a sampling device can take a sample a plurality of buggy pipelines, and work efficiency is high, simple to operate.
Drawings
Fig. 1 is a schematic view of the overall structure of the multi-channel time-sharing controlled pulverized coal automatic sampling device of the present invention.
Fig. 2 is a schematic structural view of the cyclone separator of the multi-channel time-sharing controlled pulverized coal automatic sampling device of the present invention.
Reference signs mean: 1: pulverized coal pipeline, 2: first manual ball valve, 3: first electric ball valve, 4: heat tracing pipeline, 5: second electric ball valve, 6: a filter, 7: high-pressure air blower, 8: cyclone separator, 8-1: air inlet, 8-2: bleed port, 8-3: ash falling port, 8-4: separator cartridge, 9: vibrator, 10: gate valve, 11: air extractor, 12: third electric ball valve, 13: first electromagnetic valve, 14: second electromagnetic valve, 15: gas tank, 16: an ash storage pipe.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
A multi-channel time-sharing controlled pulverized coal automatic sampling device comprises N sampling tube branches, a sampling tube main path, a cyclone separator 8, a filter 6 and an air extractor 11, wherein N is a positive integer, and heat tracing pipelines 4 for heating are wrapped on the outer surfaces of the sampling tube branches and the outer surface of the sampling tube main path to prevent heat dissipation. The cyclone separator 8 comprises a separator cylinder 8-4, the side wall of which is provided with an air inlet 8-1, the top of which is provided with an air-entraining port 8-2, and the bottom of which is provided with an ash-falling port 8-3.
N buggy pipeline 1 is connected respectively to the one end of N sampling tube branch road, all installs first manual ball valve 2 with the junction of sampling tube branch road on the buggy pipeline 1, all installs first electronic ball valve 3 on the sampling tube branch road.
The other ends of the N sampling tube branches are connected into a main sampling tube path, the other end of the main sampling tube path is connected with an air inlet 8-1 of the cyclone separator 8, and a second electric ball valve 5 for switching on and off the cyclone separator 8 is installed at the air inlet 8-1.
An ash storage pipe 16 used for storing ash screwed down from the cyclone separator 8 is arranged at the ash falling port 8-3 of the cyclone separator 8, the ash storage pipe 16 is a section of cylindrical pipe with openings at two ends, and a gate valve 10 is arranged at the bottom of the ash storage pipe 16. The outer wall of the ash storage pipe 16 is provided with a rapper 9 for rapping the ash storage pipe 16 by pulsating air to make the ash sample therein fall down when sampling.
The bleed port 8-2 of the cyclone separator 8 communicates with the inlet of the filter 6, and the outlet of the filter 6 is connected to the inlet of the high pressure blower 7.
The dust discharge port of the filter 6 is communicated with the air bleed port of the air ejector 11.
The air outlet of the air ejector 11 is communicated with any pulverized coal pipeline 1, a third electric ball valve 12 is installed at the air outlet of the air ejector 11, and a first manual ball valve 2 is installed at the joint of the pulverized coal pipeline 1 and the communication pipeline. A first electromagnetic valve 13 for controlling the starting and stopping of the air ejector 11 is installed on an air inlet pipe of the air ejector 11. The air extractor 11 is used for sucking part of the coal dust which is accumulated at the ash discharge port of the filter 6 and is brought out from the air-entraining port of the cyclone separator 8, and discharging the redundant coal dust back to the coal dust pipeline.
The device further comprises an air storage tank 15 for storing a certain amount of compressed air, a second electromagnetic valve 14 is installed at an air outlet of the air storage tank 15, and the air storage tank 15 is communicated with a purging port of the filter 6 and used for purging residual coal ash on the inner wall of the filter 6 and a filter element of the filter 6.
The utility model discloses an automatic sampling device of buggy of multichannel timesharing control's working process as follows:
1) sampling start state: the first manual ball valve 2, the first electric ball valve 3, and the second electric ball valve 5 are in an open state, the third electric ball valve 12 is in a closed state, the first electromagnetic valve 13 and the second electromagnetic valve 14 are simultaneously in a closed state, and the gate valve 10 is in a closed state.
2) A heat tracing process: before the sampling starts, the heat tracing pipeline 4 is electrified to start heating.
3) Sampling: the high pressure fan 7 is opened, at the moment, the high pressure fan 7 starts to work, and air is sucked from the inlet to the outlet of the high pressure fan 7. After a few seconds, because the air in the pipeline is continuously discharged through the high-pressure fan 7, negative pressure is generated in the pipeline, and therefore the mixture of the coal powder and the air in the coal powder pipeline 1 is pumped into the cyclone separator 8. The cyclone separator 8 has the solid-gas separation function, most of the coal dust is rotatably deposited into the ash storage pipe 16 from the inner wall of the cyclone separator 8, and air and a small part of the coal dust are introduced into the filter 6 from the air introducing port 8-2.
4) And (3) filtering: the mixture of coal dust and air entering the filter 6 from the cyclone separator 8 is filtered by the filter element, and the coal dust cannot pass through the filter element due to large particles and is left in the filter 6 or on the surface of the filter element. The filtered air is drawn out by the high pressure fan 7 and discharged to the atmosphere.
5) And (3) completing sampling: the high pressure fan 7 stops running, the first electric ball valve 3 and the second electric ball valve 5 act, the opening state is changed into the closing state, and the rest ball valves and the electromagnetic valves are unchanged in the first step state.
6) Ash falling process: the gate valve 10 is changed from a closed state to an open state, meanwhile, the vibrator 9 starts to work, and the vibrator 9 knocks the pipe wall of the ash storage pipe 16, so that the coal powder in the ash storage pipe 16 vibrates, falls down from a through hole in the middle of the gate valve 10 and falls into a sampling bottle or other equipment. After the ash drop is completed, the gate valve 10 is closed and the rapping device 9 is stopped.
7) And (3) blowing and ash discharging: after a period of sampling, more and more coal dust is accumulated in the filter 6. Therefore, the filter 6 must be cleaned. The purging process starts: at the moment, the first electric ball valve 3, the second electric ball valve 5 and the third electric ball valve 12 are closed and opened, meanwhile, the second electromagnetic valve 14 starts to work after being electrified, compressed air stored in the air storage tank 15 is blown to the filter 6 in a pulsating mode, and pulverized coal remained on the surface of a filter element of the filter 6 is blown to the bottom of the filter 6; ash discharge process: the second electromagnetic valve 14 is closed, the first electromagnetic valve 13 is opened, meanwhile, the air extractor 11 starts to work, the air extractor 11 discharges the coal dust accumulated at the bottom of the filter 6 back to the corresponding coal dust pipeline, after the ash discharge is finished, the first electromagnetic valve 13 is closed, meanwhile, the air extractor 11 stops working, and the third electric ball valve 12 is closed.
8) Powder tube N sampling process: the operation states of the first manual ball valve 2 and the first electric ball valve 3 on the powder pipe 1 are replaced by the actions of the corresponding manual ball valve and the corresponding electric ball valve on the branch pipe N in the same way as the sampling process of the powder pipe 1, and the rest steps are repeated for 1 to 7.
The foregoing is only a part of the embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements can be made without departing from the principles of the present invention, and these improvements should be regarded as the protection scope of the present invention.

Claims (7)

1. A multi-channel time-sharing controlled pulverized coal automatic sampling device is characterized by comprising N sampling tube branches, a sampling tube main path, a cyclone separator (8), a filter (6) and an air extractor (11), wherein N is a positive integer; one end of each sampling tube branch is connected with each of N pulverized coal pipelines (1), the joints of the pulverized coal pipelines (1) and the sampling tube branches are provided with first manual ball valves (2), and the sampling tube branches are provided with first electric ball valves (3); the other ends of the N sampling tube branches are connected to a sampling tube main path, the other end of the sampling tube main path is connected with an air inlet (8-1) of a cyclone separator (8), and a second electric ball valve (5) is installed at the air inlet (8-1); an ash storage pipe (16) is arranged at the ash falling port (8-3) of the cyclone separator (8), and a gate valve (10) is arranged at the bottom of the ash storage pipe (16); a bleed air port (8-2) of the cyclone separator (8) is communicated with an air inlet of the filter (6), and an air outlet of the filter (6) is connected to an inlet of the high-pressure fan (7); the ash discharge port of the filter (6) is communicated with the air bleed port of the air extractor (11); the other end of the air extractor (11) is communicated with any pulverized coal pipeline (1), a third electric ball valve (12) is installed at an air outlet of the air extractor (11), and a first manual ball valve (2) is installed at the joint of the pulverized coal pipeline (1) and the communication pipeline.
2. The automatic coal powder sampling device with multi-channel time-sharing control according to claim 1, further comprising an air storage tank (15) storing a certain amount of compressed air, wherein a second electromagnetic valve (14) is installed at an air outlet of the air storage tank (15), and the air storage tank (15) is communicated with a purging opening of the filter (6).
3. A multi-channel time-sharing controlled pulverized coal automatic sampling device according to claim 1, characterized in that the ash storage pipe (16) is a section of cylindrical pipe with two open ends.
4. A multi-channel time-sharing controlled coal powder automatic sampling device according to claim 1 or 3, characterized in that the outer wall of the ash storage pipe (16) is provided with a rapping device (9) for rapping the ash storage pipe (16) to make the ash sample therein fall.
5. The automatic pulverized coal sampling device with multi-channel time-sharing control according to claim 1, characterized in that the outer surface of the sampling tube branch and the outer surface of the sampling tube main path are wrapped with heat tracing pipelines (4) for heating.
6. The automatic coal powder sampling device with the multi-channel time-sharing control function according to claim 1, wherein a first electromagnetic valve (13) for controlling the start and stop of the air ejector (11) is installed on an air inlet pipe of the air ejector (11).
7. A multi-channel time-sharing controlled pulverized coal automatic sampling device according to claim 1, characterized in that the cyclone separator (8) comprises a separator cylinder (8-4), the side wall of which is provided with an air inlet (8-1), the top of which is provided with an air inlet (8-2), and the bottom of which is provided with an ash falling port (8-3).
CN202022624400.3U 2020-11-13 2020-11-13 Multi-channel time-sharing control pulverized coal automatic sampling device Active CN214096775U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022624400.3U CN214096775U (en) 2020-11-13 2020-11-13 Multi-channel time-sharing control pulverized coal automatic sampling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022624400.3U CN214096775U (en) 2020-11-13 2020-11-13 Multi-channel time-sharing control pulverized coal automatic sampling device

Publications (1)

Publication Number Publication Date
CN214096775U true CN214096775U (en) 2021-08-31

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Family Applications (1)

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CN202022624400.3U Active CN214096775U (en) 2020-11-13 2020-11-13 Multi-channel time-sharing control pulverized coal automatic sampling device

Country Status (1)

Country Link
CN (1) CN214096775U (en)

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