CN214471123U - Air flow sampling device - Google Patents
Air flow sampling device Download PDFInfo
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- CN214471123U CN214471123U CN202120494191.7U CN202120494191U CN214471123U CN 214471123 U CN214471123 U CN 214471123U CN 202120494191 U CN202120494191 U CN 202120494191U CN 214471123 U CN214471123 U CN 214471123U
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- wind channel
- sampler barrel
- air
- sampling device
- vent valve
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Abstract
The utility model discloses an air flow sampling device of coal pulverizer primary air relates to wind flow measurement technical field, including sampler barrel, wind channel, one-way vent valve and pipe, the bottom of sampler barrel has the inlet port, and the one-way vent valve setting is close to inlet port department in the sampler barrel, and the gas of one-way vent valve passes through the direction for the inside from inlet port to sampler barrel, and the pipe intercommunication wind channel is passed through in the space of the one-way vent valve upside in the sampler barrel, and the one end in wind channel is the air intake, the other end and the furnace intercommunication in wind channel. When the coal pulverizer does not operate, seal the air intake in wind channel, because the negative pressure has in the furnace when thermal power factory moves, consequently make the inside in wind channel and the inside of sampling tube have the negative pressure, the outside air of sampling tube can get into the inside of sampling tube through the one-way breather valve, gets into furnace through the wind channel again, utilizes the negative pressure in the furnace to establish air cycle and cleans the sampling tube, and swift environmental protection prevents stifled effectual.
Description
Technical Field
The utility model relates to an air flow measurement technical field, concretely relates to air flow sampling device of coal pulverizer primary air.
Background
At present, the primary air flow of a coal mill is measured, sampling cylinders are required to be arranged on two sides of an air channel, the sampling cylinders are used as sampling devices, and each sampling cylinder is connected with the air channel through three guide pipes. According to the sampling mode, a large amount of dust impurities are mixed in primary air of the coal mill, and in the sampling process, the dust impurities can be deposited at the bottom of the sampling cylinder and gradually accumulated to cause blockage, so that the primary air flow swings or is misaligned. Misalignment of primary air flow can cause tripping of a coal mill, and further cause load swing, thereby endangering the operation safety of a unit.
Traditional amount of wind sampling device passes through the pipe with wind once and introduces in the sampling tube, and a large amount of dust impurities that carry in the wind can pile up in the sampling tube, and traditional processing method does, and the spiral cover of regularly opening the sampling tube bottom puts the ash, consumes the manpower and can't accomplish timely clearance to the laying dust of exhaust needs extra processing.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides an utilize furnace negative pressure to carry out the wind flow sampling device from the wind of the coal pulverizer that cleans to solve current wind flow sampling device and need regularly open the spiral cover of sampler barrel bottom and put the ash, consume the manpower and can't accomplish in time the clearance, and the problem of exhaust deposition needs extra processing.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides an air flow sampling device, includes sampler barrel, wind channel, one-way vent valve and pipe, and the bottom of sampler barrel has the inlet port, and the one-way vent valve sets up and is close to inlet port department in the sampler barrel, and the gaseous direction of passing through of one-way vent valve is from the inside of inlet port to sampler barrel, and the space of the one-way vent valve upside in the sampler barrel passes through pipe intercommunication wind channel, and the one end in wind channel is the air intake, the other end and the furnace intercommunication in wind channel.
Further, the one-way vent valve is a one-way vent waterproof membrane.
Furthermore, a screw cap is arranged at the bottom of the sampling tube, an air inlet hole is formed in the lower end face of the screw cap, and the one-way ventilating waterproof membrane is arranged in the screw cap.
Further, the air flow sampling device also comprises an electromagnetic valve, and an air inlet is communicated with an air outlet port of the electromagnetic valve.
Furthermore, a dustproof filter screen is arranged at the air inlet of the electromagnetic valve.
Furthermore, the air flow sampling device also comprises a sampling tube, one end of the sampling tube is communicated with the space on the upper side of the one-way ventilation membrane, and the other end of the sampling tube is connected with the positive pressure side of the differential pressure transmitter.
The utility model has the advantages of as follows: when the coal pulverizer does not operate, seal the air intake in wind channel, because the negative pressure has in the furnace when thermal power factory moves, consequently make the inside in wind channel and the inside of sampling tube have the negative pressure, the outside air of sampling tube can get into the inside of sampling tube through one-way breather valve, gets into furnace through the wind channel again. The negative pressure in the hearth is utilized to establish air circulation to clean the sampling cylinder, so that the sampling device is fast and environment-friendly and has good anti-blocking effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic structural view of an air flow sampling device according to an embodiment of the present invention.
In the figure: 1-a sampling tube; 2-a catheter; 3-screwing a cover; 4-an electromagnetic valve; 5-one-way ventilating waterproof membrane; 6-air duct; 7-sampling tube; 8-a differential pressure transmitter; 9-a hearth; 10-a coal mill; 11-a cold air inlet; 12-a hot air inlet.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.
As shown in fig. 1, the utility model provides a wind flow sampling device of wind is once spent to coal pulverizer, including sampler barrel 1, wind channel 6, one-way vent valve and pipe 2, the bottom of sampler barrel 1 has the inlet port, one-way vent valve sets up and is close to air inlet department in sampler barrel 1, the gas of one-way vent valve passes through the direction for the inside from inlet port to sampler barrel 1, the inlet port is close to the downside of one-way vent valve, pipe 2 and wind channel 6 intercommunication are passed through to the space of one-way vent valve upside, the one end of wind channel 6 is equipped with cold wind input port 11 and hot air input port 12, the entry of other end intercommunication coal pulverizer 10 of wind channel 6, the export of coal pulverizer 10 communicates with thermal power plant's furnace 9. One end of the sampling tube 7 is communicated with the space above the one-way vent valve in the sampling cylinder 1, and the other end is connected with the positive pressure side of the differential pressure transmitter 8. Outside air can enter into the sampling tube 1 through the one-way ventilation valve, and the air in the restriction sampling tube 1 flows out the sampling tube 1, after having the malleation in preventing wind channel 6, make dust impurity in the sampling tube 1 blown outside the device, when the coal pulverizer 10 does not operate, close the cold wind adjusting flap that sets up at cold wind input port 11 and set up the hot-blast adjusting flap at hot-blast input port 12, because the negative pressure has in the furnace 9 during thermal power plant operation, consequently, make the inside of wind channel 6 and the inside of sampling tube 1 have the negative pressure, the outside air of sampling tube 1 can get into the inside of sampling tube 1 through the one-way ventilation valve, again get into furnace 9 through wind channel 6. The negative pressure in the hearth 9 is utilized to establish air circulation to clean the sampling cylinder 1, so that the sampling device is fast and environment-friendly and has good anti-blocking effect.
In a preferred embodiment, the one-way vent valve is a one-way vent membrane, preferably a one-way vent waterproof membrane 5, which can block water vapor from entering the sampling tube 1 and prevent the coal pulverizer 10 from being affected by moisture in the interior thereof and the combustion effect of pulverized coal.
In a preferred embodiment, the screw cap 3 is arranged at the bottom of the sampling tube 1, the lower end face of the screw cap 3 is provided with an air inlet, the one-way ventilating waterproof membrane 5 is arranged in the screw cap 3, and the screw cap 3 can be detached to replace the one-way ventilating waterproof membrane 5 after the one-way ventilating waterproof membrane 5 is damaged, so that the operation is convenient.
In a preferred embodiment, the air flow sampling device further comprises an electromagnetic valve 4, an air inlet hole on the lower end face of the spiral cover 3 is communicated with an air outlet port of the electromagnetic valve 4, and a dustproof filter screen is arranged at the air inlet port of the electromagnetic valve 4, so that the phenomenon that impurities in air enter the sampling cylinder 1 to influence the ventilation effect of the one-way ventilation waterproof membrane 5 is avoided. 4 connection control unit of solenoid valve can make coal pulverizer 10 before the start and after the shutdown, automatically open solenoid valve 4, control unit can also self-closing cold wind adjusting stop and hot-blast adjusting stop to open the outlet door that sets up in the export of coal pulverizer 10, with furnace 9 and wind channel 6 intercommunication, blow the ash automatically and clean, prevent that dust impurity from long-time accumulating, the convenience of blowing the ash has further been improved, solenoid valve 4 keeps closing during the coal pulverizer 10 operation, the leakproofness of a sampling section of thick bamboo 1 has further been improved.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. The utility model provides an air flow sampling device which characterized in that: including sampler barrel (1), wind channel (6), one-way vent valve and pipe (2), the bottom of sampler barrel (1) has the inlet port, the one-way vent valve sets up be close to in sampler barrel (1) inlet port department, the gas of one-way vent valve passes through the direction for following the inlet port extremely the inside of sampler barrel, in sampler barrel (1) the space of one-way vent valve upside passes through pipe (2) intercommunication wind channel (6), the one end of wind channel (6) is the air intake, the other end and furnace (9) intercommunication in wind channel (6).
2. The wind flow sampling device of claim 1, wherein: the one-way vent valve is a one-way vent waterproof membrane (5).
3. The wind flow sampling device of claim 2, wherein: the bottom of the sampling tube (1) is provided with a screw cap (3), the lower end face of the screw cap (3) is provided with the air inlet hole, and the one-way ventilation waterproof membrane (5) is arranged in the screw cap (3).
4. The air flow sampling device of claim 3, wherein: the air flow sampling device further comprises an electromagnetic valve (4), and the air inlet hole is communicated with an air outlet port of the electromagnetic valve (4).
5. The wind flow sampling device of claim 4, wherein: and a dustproof filter screen is arranged at the air inlet of the electromagnetic valve (4).
6. The wind flow sampling device of claim 1, wherein: the air flow sampling device further comprises a sampling tube (7), one end of the sampling tube (7) is communicated with the space on the upper side of the one-way ventilation membrane, and the other end of the sampling tube is connected with the positive pressure side of the differential pressure transmitter (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120494191.7U CN214471123U (en) | 2021-03-03 | 2021-03-03 | Air flow sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120494191.7U CN214471123U (en) | 2021-03-03 | 2021-03-03 | Air flow sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214471123U true CN214471123U (en) | 2021-10-22 |
Family
ID=78153851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120494191.7U Active CN214471123U (en) | 2021-03-03 | 2021-03-03 | Air flow sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214471123U (en) |
-
2021
- 2021-03-03 CN CN202120494191.7U patent/CN214471123U/en active Active
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