CN213423047U - Flue gas component detection device of pulverized coal preparation system - Google Patents
Flue gas component detection device of pulverized coal preparation system Download PDFInfo
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- CN213423047U CN213423047U CN202022959063.3U CN202022959063U CN213423047U CN 213423047 U CN213423047 U CN 213423047U CN 202022959063 U CN202022959063 U CN 202022959063U CN 213423047 U CN213423047 U CN 213423047U
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Abstract
The utility model relates to a buggy preparation system gas composition detection device, include: the headwind sampling tube is fixed on the tube wall of the measured medium pipeline, and one end of the headwind sampling tube extends into the measured medium pipeline and is bent in the opposite direction of the running of the smoke; the other end of the upwind sampling tube is connected with a filter, the filter is connected with a first connector of an electromagnetic three-way valve, and O2The content detection transmitter is connected with a second connector of the electromagnetic three-way valve, and the CO content detection transmitter is connected with the O2The content detection transmitter is connected, the suction device is connected with the CO content detection transmitter, and the downwind air suction pipeOne end of the downwind air suction pipe is connected with the suction device, and the other end of the downwind air suction pipe extends into the negative pressure pipeline and is bent towards the smoke running direction; the pressure reducing valve is connected with a third connecting port of the electromagnetic three-way valve. The utility model discloses a detection device has that the investment is low, the maintenance volume is little, the true and reliable characteristics of sample gas, can realize the flue gas composition detection function when buggy preparation, the safe operation of guarantee technology production.
Description
Technical Field
The utility model relates to a smoke components detection device technical field especially relates to a buggy preparation system smoke components detection device.
Background
The information disclosed in the background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information constitutes prior art that is already known to a person of ordinary skill in the art.
The coal powder preparation system is a flammable and explosive production process, and in order to ensure safe production, the powder preparation system is provided with online detection equipment for the content of flue gas O2 and the content of CO, which is a necessary monitoring means for production. For more than ten years, various coal powder preparation enterprises mostly apply products such as infrared gas analyzers, laser gas analyzers and the like according to the characteristics of production systems. The infrared gas analyzer adopts the principle of air suction sampling analysis, and the laser gas analyzer adopts the principle of plug-in direct detection, so that the infrared gas analyzer has certain advantages in practical application. But the respective disadvantages are also evident: the infrared gas analyzer has the fatal defects of an air suction pump due to huge equipment and overlong air suction pipeline, and the problems of frequent failure and high maintenance amount are caused by the phenomena of insufficient suction, air leakage of a negative pressure pipeline, damage of a pump body and the like, excessive heating, cooling, filtering protection and the like in daily application. The laser gas analyzer adopts a gas pipeline to be inserted for direct measurement, but the requirement on the impurity concentration of a gas medium in a pipeline is higher, once impurity dust is attached to a transmitting or receiving surface, a signal is distorted, and the frequency of back flushing is higher, so that the signal continuity is poor and the signal discontinuity is serious; the disadvantages of the above products are in common: the device structure is complicated and heavy, the installation is difficult, the daily check-up frequency is many, the maintenance load is large, more outstanding is that its price is expensive, the input cost of each monitoring point all is more than 10 ten thousand yuan (the design standard of each set of pulverized coal preparation system is 6 monitoring points), ordinary enterprises are difficult to bear the purchase cost.
SUMMERY OF THE UTILITY MODEL
To foretell problem, the utility model provides a buggy preparation system gas composition detection device, the device have investment low, simple structure, simple to operate, maintenance volume are little, the true and reliable characteristics of appearance gas, can realize the gas composition when buggy preparation and detect the function, ensure the safe operation of technology production. In order to achieve the above object, the technical solution of the present invention is as follows.
A pulverized coal preparation system smoke composition detection device includes: tested medium pipeline, headwind sampling pipe, filter, electromagnetic three-way valve and O2The device comprises a content detection transmitter, a CO content detection transmitter, a suction device, a downwind air suction pipe, a negative pressure pipeline and a pressure reducing valve. The upwind sampling tube is fixed on the pipe wall of the medium pipeline to be detected, and one end of the upwind sampling tube extends into the medium pipeline to be detected and is bent in the opposite direction of the operation of the smoke. The other end of the upwind sampling tube is connected with a filter, the filter is connected with a first connector of an electromagnetic three-way valve, and O2The content detection transmitter is connected with a second connector of the electromagnetic three-way valve, and the CO content detection transmitter is connected with the O2The device comprises a content detection transmitter, a suction device, a downwind air suction pipe, a negative pressure pipeline, a suction device, a flue gas inlet pipe, a flue gas outlet pipe, a flue gas inlet pipe, a flue gas outlet pipe and a flue gas inlet pipe. And the pressure reducing valve is connected with a third connecting port of the electromagnetic three-way valve.
Furthermore, the filter is connected with the electromagnetic three-way valve, and the pressure reducing valve is connected with the electromagnetic three-way valve through a connecting steel pipe.
Further, the electromagnetic three-way valve and O2Between content detection transmitters, O2The content detection transmitter and the CO content detection transmitter, and the CO content detection transmitter and the suction device are connected through hoses.
Further, the suction device comprises a suction pump and the like, and the suction pump is mainly used for providing negative pressure suction capability for the sampling pipeline of the detection device.
Further, the pressure reducing valve is connected with a gas supply device, so that a gas back-blowing filter is provided to clean dust in the filter.
Further, the gas supply device is a nitrogen bottle storing compressed nitrogen.
Further, the filter includes any one of a screen filter, a bag filter, and the like.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a flue gas composition detection device adopts the gaseous changer on-line measuring equipment of the electrochemistry intelligence of low price relatively, with the help of the negative pressure gas in the buggy preparation technology, is equipped with corresponding breathing in and blowback equipment, realizes the on-line measuring function of flue gas composition. In addition, the high negative pressure gas in the coal powder preparation process is used for connecting corresponding air suction and back flushing equipment, so that the function of online detection of smoke components is realized. Therefore, for some current detection techniques, the utility model discloses a flue gas composition detection device has advantages such as suction is strong, the investment is low, simple structure, simple to operate, maintenance volume are little, can obviously improve infrared ray and laser detection technique not enough.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a top view of a pipeline welding temperature detection device in an embodiment of the present invention; in the figure: 1-medium pipeline to be tested, 2-upwind sampling tube, 3-filter, 4-electromagnetic three-way valve and 5-O2The device comprises a content detection transmitter, a 6-CO content detection transmitter, a 7-suction device, an 8-downwind air suction pipe, a 9-negative pressure pipeline, a 10-pressure reducing valve, a 11-steel pipe and a 12-hose.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
For convenience of description, the words "upper", "lower", "left" and "right" in the present application, if any, merely indicate that the device or element referred to in the present application is constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention, since they are merely intended to be oriented in the upper, lower, left and right directions of the drawings themselves, and not to limit the structure, but merely to facilitate the description of the invention and to simplify the description.
As mentioned above, although the existing pulverizing system sets the flue gas O2The online detection equipment for the content and the CO content has certain advantages in practical application, but the respective disadvantages are obvious. Therefore, the utility model provides a smoke component detection device of a coal powder preparation system; the invention will now be further described with reference to the drawings and specific examples.
Referring to fig. 1, there is illustrated a flue gas composition detecting apparatus of a pulverized coal preparation system, which includes: measured medium pipeline 1, headwind sampling pipe 2, filter 3, electromagnetic three-way valve 4 and O2A content detection transmitter 5, a CO content detection transmitter 6, a suction device 7, a downwind air suction pipe 8, a negative pressure pipeline 9 and a pressure reducing valve 10. Wherein:
the headwind sampling tube 2 is fixed on the tube wall of the medium pipeline 1 to be detected, and one end of the headwind sampling tube 2 extends into the medium pipeline 1 to be detected and is bent towards the opposite direction of the running of the smoke (the running direction of the smoke is shown by an arrow in the figure 1), so that the smoke can enter the sampling tube along the bent end of the headwind sampling tube 2.
The other end of the headwind sampling pipe 2 is connected with a filter 3, and the filter 3 is connected with a first connecting port of the electromagnetic three-way valve 4 through a steel pipe 11. Said O is2The content detection transmitter 5 is connected with a second connector of the electromagnetic three-way valve 4 through a hose 12, and the CO content detection transmitter 6 is connected with O2The content detection transmitters 5 are connected through hoses 12.
The suction device 7 is connected with the CO content detection transmitter 6 through a hose 12. In this embodiment, the suction device 7 is a suction pump, and its main function is to provide negative pressure suction capability for the sampling pipeline of the detection device.
The downwind air suction pipe 8 is fixed on the pipe wall of the negative pressure pipeline 9, one end of the downwind air suction pipe 8 is connected with the suction device 7, and the other end of the downwind air suction pipe 8 extends into the negative pressure pipeline 9 and is bent towards the smoke running direction. The pressure reducing valve 10 is connected with a gas supply device, and the gas supply device is a nitrogen bottle or an on-site nitrogen source pipeline which stores compressed nitrogen, so that a gas back-blowing filter 3 is provided to clean dust in the filter.
When the pulverized coal preparation system is produced, the negative pressure pipeline 9 and the air suction pump provide a sampling pipeline of the detection device with larger negative pressure air suction capacity together so as to ensure that the sample gas passing through the detection transmitter is sufficient; when the coal powder preparation system stops production, the medium pipeline 11 and the negative pressure pipeline 9 to be detected have no negative pressure, and the detection operation can be kept only by the suction force of the suction device 7.
When the electromagnetic three-way valve 4 is powered off, the smoke sampling passage is opened, the back flushing loop formed by the pressure reducing valve 10 and the steel pipe 11 is closed, the suction device 7 and the negative pressure in the negative pressure pipeline 9 act together to suck smoke in the medium pipeline 1 to be detected into O in sequence2The content detection transmitter 5 and the CO content detection transmitter 6, thereby realizing O2And (4) detecting the smoke component values of the content and the CO content. When the electromagnetic three-way valve 4 is electrified, the smoke sampling passage is closed, the back flushing loop is opened, and compressed gas (such as nitrogen) enters the tested medium pipeline 1 through the electromagnetic three-way valve 4 via the steel pipe 11, the filter 3 and the downwind sampling steel pipe 2, so that the purging and cleaning of dust in the filter 3 and the downwind sampling steel pipe 2 are realized. The power-off time and the power-on time of the electromagnetic three-way valve 4 are generally set to 3600S and 5S respectively, and can be realized through a time relay or PLC control.
Finally, it should be understood that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (7)
1. The utility model provides a buggy preparation system gas composition detection device which characterized in that includes: tested medium pipeline, headwind sampling pipe, filter, electromagnetic three-way valve and O2The device comprises a content detection transmitter, a CO content detection transmitter, a suction device, a downwind air suction pipe, a negative pressure pipeline and a pressure reducing valve; the upwind sampling tube is fixed on the pipe wall of the medium pipeline to be detected, and one end of the upwind sampling tube extends into the medium pipeline to be detected and is bent in the opposite direction of the operation of the smoke; the other end of the upwind sampling tube is connected with a filter, the filter is connected with a first connector of an electromagnetic three-way valve, and O2The content detection transmitter is connected with a second connector of the electromagnetic three-way valve, and the CO content detection transmitter is connected with the O2The downwind air suction pipe is fixed on the pipe wall of the negative pressure pipeline, one end of the downwind air suction pipe is connected with the suction device, and the other end of the downwind air suction pipe extends into the negative pressure pipeline and bends towards the running direction of the flue gas; and the pressure reducing valve is connected with a third connecting port of the electromagnetic three-way valve.
2. The smoke component detection device for the pulverized coal preparation system according to claim 1, wherein the filter and the electromagnetic three-way valve, and the pressure reducing valve and the electromagnetic three-way valve are connected through connecting steel pipes.
3. The pulverized coal preparation system flue gas component detection device according to claim 1, wherein the electromagnetic three-way valve and O are connected to each other2Between content detection transmitters, O2The content detection transmitter and the CO content detection transmitter, and the CO content detection transmitter and the suction device are connected through hoses.
4. The smoke component detection device of the pulverized coal preparation system according to claim 1, wherein the suction device comprises a suction pump.
5. The smoke component detection device for the pulverized coal preparation system according to claim 1, wherein the pressure reducing valve is connected with a gas supply device.
6. The pulverized coal preparation system flue gas component detection device according to claim 5, wherein the gas supply device is a nitrogen cylinder or an on-site nitrogen source pipeline storing compressed nitrogen.
7. The smoke composition detection device for a pulverized coal preparation system according to any one of claims 1 to 6, wherein the filter includes any one of a screen filter and a bag filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022959063.3U CN213423047U (en) | 2020-12-11 | 2020-12-11 | Flue gas component detection device of pulverized coal preparation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022959063.3U CN213423047U (en) | 2020-12-11 | 2020-12-11 | Flue gas component detection device of pulverized coal preparation system |
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| Publication Number | Publication Date |
|---|---|
| CN213423047U true CN213423047U (en) | 2021-06-11 |
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|---|---|---|---|
| CN202022959063.3U Active CN213423047U (en) | 2020-12-11 | 2020-12-11 | Flue gas component detection device of pulverized coal preparation system |
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| CN (1) | CN213423047U (en) |
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