CN218156644U - Pulverized coal furnace draught fan outlet pressure measuring device - Google Patents
Pulverized coal furnace draught fan outlet pressure measuring device Download PDFInfo
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- CN218156644U CN218156644U CN202222723214.4U CN202222723214U CN218156644U CN 218156644 U CN218156644 U CN 218156644U CN 202222723214 U CN202222723214 U CN 202222723214U CN 218156644 U CN218156644 U CN 218156644U
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Abstract
The utility model belongs to the technical field of draught fan detection, in particular to a pulverized coal furnace draught fan outlet pressure measuring device, which comprises a connecting pipeline for connecting a draught fan and a spiral supercharger, wherein the connecting pipeline is provided with a first control valve, one side of the connecting pipeline is provided with a measuring branch pipe, one end of the measuring branch pipe is provided with a pipeline pressure detector, one end of the pipeline pressure detector is connected with a pressurizing pipeline, and one side of the measuring branch pipe is provided with a second control valve; can be through controlling first control valve, the condition of opening and shutting of second control valve and third control valve, change the trend of pipeline apoplexy, will adhere to in the inside dust dirt of measuring branch pipe when detecting pressure and clear away, make the inside passageway of measuring branch pipe can not narrow down, it is unobstructed to keep, the detection accuracy of guarantee pipeline pressure detection meter, do not need the manual work to clear up the dirt that the inside clearance of measuring branch pipe falls, need not frequently to demolish each pipeline, thereby avoid pipeline sealing nature to be destroyed.
Description
Technical Field
The utility model belongs to the technical field of the draught fan detects, concretely relates to buggy stove draught fan export pressure measurement device.
Background
The function of draught fan is the flue gas in the discharge furnace to make in the furnace maintain certain negative pressure, the loss of pressure in the tail flue is overcome, also called the suction fan, furnace pressure, flue gas pressure, coal pulverizer pressure and primary and secondary air pressure all are the important foundation of boiler normal operating, especially whether draught fan outlet pressure accurately concerns the steady operation of power plant, when detecting draught fan outlet pressure, the flue gas has a large amount of smoke and dust, the smoke and dust can be attached to the inner wall of detection pipeline, after long-time use of detection pipeline, the attached a large amount of dust of pipeline inner wall forms the dirt, make the detection pipe narrow down to the inner channel, when detecting draught fan outlet pressure, lead to the measured data to appear the deviation, if need to clear up the detection pipeline, need to demolish it and clear up, but demolish the installation repeatedly and can influence the leakproofness of pipe connection, the normal use of pipeline and measurement structure are influenced likewise.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pulverized coal furnace draught fan outlet pressure measuring device, have through changing the trend of pipeline apoplexy, will adhere to and clear away at the inside dust dirt of measuring branch pipe when detecting pressure, make the inside passageway of measuring branch pipe can not narrow down, it is unobstructed to keep, the detection accuracy of guarantee pipeline pressure detection meter, do not need the manual work to clear up the dirt that the inside clearance of measuring branch pipe falls, need not frequently to demolish each pipeline, thereby avoid the destroyed characteristics of pipeline sealing nature.
The utility model provides a following technical scheme: the utility model provides a buggy stove draught fan export pressure measuring device, is including the connecting tube of connecting draught fan and spiral booster compressor, be provided with first control valve on the connecting tube, connecting tube one side is provided with the measuring branch, measuring branch one end is installed the pipeline pressure and is detected the meter, pipeline pressure detects meter one end and is connected with the pressurization pipeline, measuring branch one side is provided with the second control valve, measuring branch with pressurization pipeline one end all with the connecting tube intercommunication, measuring branch inner chamber bottom is provided with the flabellum, the flabellum below be provided with measure the mounting bracket that the branch is connected, the central fixedly connected with connecting axle in flabellum top, connecting axle one side is provided with pipe wall scale removal scraper, pressurization pipeline one side is provided with the third control valve.
Wherein, the mounting bracket is established to the cruciform structure, four ends of mounting bracket all with measure branch pipe inner wall fixed connection, the flabellum rotate through the pivot connect in mounting bracket top central authorities.
The pipe wall descaling scraper and the inner wall of the measuring branch pipe are not in contact with each other, a mounting groove is formed in one side of the connecting shaft, and the inside of the mounting groove is provided with the detachable pipe wall descaling scraper.
The pipeline pressure detector is connected with the pressurizing pipeline, the connecting pipeline is arranged to be an L-shaped pipeline, the measuring branch pipe is fixedly connected to one horizontal end of the connecting pipeline, and the pressurizing pipeline is fixedly connected to one vertical end of the connecting pipeline.
Wherein, the horizontal one end of connecting tube links to each other with the draught fan air outlet, the perpendicular one end of connecting tube links to each other with the spiral booster compressor air intake.
The utility model has the advantages that: this is novel can be through controlling first control valve, the condition of opening and shutting of second control valve and third control valve, change the trend of pipeline apoplexy, will adhere to in the inside dust dirt of measuring branch pipe when detecting pressure and clear away, make the inside passageway of measuring branch pipe can not narrow down, keep unobstructed, guarantee pipeline pressure detects the detection accuracy of meter, do not need the manual work to clear up the inside dirt that clears up of measuring branch pipe, need not frequently to demolish each pipeline, thereby avoid pipeline sealing nature to be destroyed.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
Fig. 1 is a schematic external structural view of the present invention;
FIG. 2 is a schematic sectional view of a measuring branch pipe according to the present invention;
fig. 3 is a schematic top view of the mounting bracket of the present invention;
FIG. 4 is a schematic cross-sectional view of the connecting pipe according to the present invention;
FIG. 5 is a schematic structural view of the measuring branch pipe of the present invention in a dust-removing state;
fig. 6 is a schematic view of the dynamic structure of the middle connecting pipeline in the normal ventilation state.
In the figure: 1. connecting a pipeline; 2. measuring branch pipes; 3. a pipeline pressure detector; 4. a pressurized conduit; 11. a first control valve; 21. a second control valve; 22. a fan blade; 221. a mounting frame; 222. a connecting shaft; 223. a pipe wall descaling scraper; 41. and a third control valve.
Detailed Description
Referring to fig. 1-6, the present invention provides the following technical solutions: connecting tube 1 including connecting draught fan and spiral booster compressor, be provided with first control valve 11 on connecting tube 1, 1 one side of connecting tube is provided with measures branch pipe 2, measure 2 one ends of branch pipe and install pipeline pressure and detect meter 3, 3 one ends of pipeline pressure detection meter are connected with pressurization pipeline 4, measure 2 one sides of branch pipe and be provided with second control valve 21, measure branch pipe 2 with 4 one ends of pressurization pipeline all with connecting tube 1 intercommunication, measure 2 inner chamber bottoms of branch pipe and be provided with flabellum 22, flabellum 22 below be provided with measure the mounting bracket 221 that branch pipe 2 is connected, the central fixedly connected with connecting axle 222 in flabellum 22 top, connecting axle 222 one side is provided with pipe wall descaling scraper 223, 4 one sides of pressurization pipeline are provided with third control valve 41.
In this embodiment: the novel middle connecting pipeline 1 is used for connecting an induced draft fan and a spiral booster, a pipeline pressure detector 3 for detecting the pressure of an air outlet of the induced draft fan is arranged between a measuring branch pipe 2 and a pressurizing pipeline 4 on one side of the connecting pipeline 1, and is respectively arranged between the connecting pipeline 1, a first control valve 11, a second control valve 21 and a third control valve 41 on one side of the measuring branch pipe 2 and the pressurizing pipeline 4 to control the pipelines, when the pressure of the outlet of the induced draft fan is tested, the connecting pipeline 1 is closed through the first control valve 11, so that wind enters the measuring branch pipe 2, the pressure is detected when passing through the pipeline pressure detector 3, as the wind drawn out from a thermal power generation pulverized coal furnace by the induced draft fan carries a large amount of smoke, after the detection is carried out for many times in the measuring branch pipe 2, the inner wall of the measuring branch pipe 2 can be adhered with a large amount of pulverized coal, and the accumulation of the pulverized coal for a long time can form dirt on the inner wall of the measuring branch pipe 2, so that the internal channel of the measuring branch pipe 2 becomes narrow, and when detecting the pressure, the detected data will be affected, the fan 22 arranged inside the measuring branch pipe 2 can drive the fan 22 to rotate when the wind inside the connecting pipe 1 enters the measuring branch pipe 2 and the wind rapidly passes through the fan 22, so that the rotating fan 22 drives the connecting shaft 222 at the top thereof to rotate, the pipe wall descaling scraper 223 arranged at one side of the connecting shaft 222 rotates to scrape off the dirt attached to the inner wall of the measuring branch pipe 2, part of the dirt continues to move with the wind after being scraped, and returns to the inside of the connecting pipe 1 through the pressurizing pipe 4, after the pressure detection is completed, the first control valve 11 at one side of the connecting pipe 1 is opened, the third control valve 41 is closed, the dirt falling into the connecting pipe 1 during the detection is brought into the filtering device in the thermal power generation system, part of dirt falls on the fan blades 22 and the mounting frame 221, one side of the measuring branch pipe 2 is thoroughly cleaned at intervals, the first control valve 11 and the third control valve 41 are opened, the second control valve 21 is closed, air inside the connecting pipe 1 enters the measuring branch pipe 2 through the pressurization pipe 4, dirt remaining inside the measuring branch pipe 2 is blown to the bottom of the inner cavity of the measuring branch pipe 2, then the first control valve 11 is closed, the second control valve 21 is opened, dirt inside the measuring branch pipe 2 enters the connecting pipe 1, then the third control valve 41 and the second control valve 21 are closed, the first control valve 11 is opened, the connecting pipe 1 works normally, dust dirt inside the connecting pipe 1 is conveyed to filtering equipment in a thermal power generation system in the working process, the first control valve 11, the second control valve 21 and the third control valve 41 are controlled to change the opening and closing conditions of the air, the trend of the dust dirt in the connecting pipe is cleaned while pressure is detected, the dust adhered inside the measuring branch pipe 2 is cleaned, the dust in the measuring branch pipe 2 is not required to be manually cleaned, the dirt in the measuring branch pipe is not required to be removed, the dirt cleaning flow meter, the dirt in the manual detection process, and the dirt cleaning accuracy is not required to be guaranteed, and the dirt detection accuracy of the manual detection of the measuring branch pipe is not required to be detected.
The mounting frame 221 is in a cross structure, four ends of the mounting frame 221 are fixedly connected with the inner wall of the measuring branch pipe 2, and the fan blades 22 are rotatably connected to the center of the top of the mounting frame 221 through rotating shafts; the installation is carried out through the installation frame 221 and the fan blades 22, under the action of wind, the fan blades 22 rotate inside the measuring branch pipe 2, so that the connecting shaft 222 at the top of the fan blades 22 and the pipe wall descaling scraper 223 are driven to rotate, and the cleaning of the inner wall of the measuring branch pipe 2 is completed.
The pipe wall descaling scraper 223 is not in contact with the inner wall of the measuring branch pipe 2, one side of the connecting shaft 222 is provided with an installation groove, and the detachable pipe wall descaling scraper 223 is arranged in the installation groove; the pipe wall descaling scraper 223 cannot contact with the inner wall of the measuring branch pipe 2, the inner wall of the measuring branch pipe 2 is provided with a thin layer of attachments which cannot influence the detection condition, the pipe wall descaling scraper 223 is prevented from directly contacting with the inner wall of the measuring branch pipe 2, the inner wall of the measuring branch pipe 2 is prevented from being scraped by the pipe wall descaling scraper 223, and therefore the service life of the measuring branch pipe 2 is influenced.
The connecting pipeline 1, the measuring branch pipe 2, the pipeline pressure detector 3 and the pressurizing pipeline 4 are communicated with each other, the connecting pipeline 1 is an L-shaped pipeline, the measuring branch pipe 2 is fixedly connected to the horizontal end of the connecting pipeline 1, and the pressurizing pipeline 4 is fixedly connected to the vertical end of the connecting pipeline 1; connecting tube 1 level one end links to each other with the draught fan air outlet, 1 perpendicular one end of connecting tube links to each other with the spiral booster compressor air intake, and when measuring pressure, wind gets into the inside of measuring branch pipe 2 from the below, and the pipeline pressure through measuring branch pipe 2 top detects meter 3 and detects pressure, when clearing up the inside dirt of measuring branch pipe 2, and wind gets into by the top of measuring branch pipe 2 through pressurization pipeline 4, pressurizes measuring branch pipe 2 inside, blows the dirt to measuring branch pipe 2 inside below.
The utility model discloses a theory of operation and use flow: when the pressure detection device is used, when the outlet pressure of an induced draft fan is detected, the connecting pipeline 1 is closed through the first control valve 11, wind enters the measuring branch pipe 2, the pressure is detected when the wind passes through the pipeline pressure detector 3, meanwhile, when the wind in the connecting pipeline 1 enters the measuring branch pipe 2, the wind quickly passes through the fan blades 22 to drive the fan blades 22 to rotate, so that the rotating fan blades 22 drive the connecting shaft 222 at the top of the wind to rotate, the pipe wall descaling scraper 223 arranged on one side of the connecting shaft 222 rotates to scrape off dirt attached to the inner wall of the measuring branch pipe 2, part of the dirt continues to move along with the wind after being scraped off, the dirt returns to the inside of the connecting pipeline 1 after passing through the pressurizing pipeline 4, after the pressure detection is completed, the first control valve 11 on one side of the connecting pipeline 1 is opened, the third control valve 41 is closed, when the detection is performed, the dirt falling to the inside of the connecting pipeline 1 is carried into the filtering device in the thermal power generation system, part of the dirt falls onto the fan blades 22 and the second control valve, after the pressure detection is completed, after the pressure detection, the first control valve 11 on one side of the connecting pipeline 1 is opened, the first control valve 11 on one side, when the first control valve 41 is closed, when the dirt falls off, the dirt in the connecting pipeline 1, the dirt in the connecting pipeline 2 is blown to the filtering device, the second control branch pipe 2, the inner cavity of the second branch pipe 2, the third control valve is completely blown, dirt control valve 21, the inner cavity of the measuring branch pipe 21 is completely blown, the inner cavity of the second branch pipe 21, the inner cavity of the second branch pipe 21 is completely blown, the inner cavity of the second branch pipe 2, the measuring branch pipe 21, then, the third control valve 41 and the second control valve 21 are closed, the first control valve 11 is opened, the connecting pipe 1 is operated normally, and the dust and dirt in the connecting pipe 1 is conveyed to the filtering equipment in the thermal power generation system during operation.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a pulverized coal furnace draught fan outlet pressure measuring device which characterized in that: including the connecting tube of connecting draught fan and spiral booster compressor, be provided with first control valve on the connecting tube, connecting tube one side is provided with measures the branch pipe, measure branch pipe one end and install the pipeline pressure and detect the meter, pipeline pressure detects meter one end and is connected with the pressurized pipeline, it is provided with the second control valve to measure branch pipe one side, measure the branch pipe with pressurized pipeline one end all with the connecting tube intercommunication, it is provided with the flabellum to measure branch pipe inner chamber bottom, the flabellum below be provided with measure the mounting bracket that the branch pipe is connected, flabellum top central fixedly connected with connecting axle, connecting axle one side is provided with pipe wall descaling scraper, pressurized pipeline one side is provided with the third control valve.
2. The pulverized coal furnace induced draft fan outlet pressure measuring device of claim 1, which is characterized in that: the mounting bracket is arranged to be of a cross structure, four ends of the mounting bracket are fixedly connected with the inner wall of the measuring branch pipe, and the fan blades are rotatably connected to the center of the top of the mounting bracket through rotating shafts.
3. The pulverized coal furnace induced draft fan outlet pressure measuring device of claim 1, wherein: the pipe wall descaling scraper and the inner wall of the measuring branch pipe are not in contact with each other, a mounting groove is formed in one side of the connecting shaft, and the inside of the mounting groove is provided with a detachable pipe wall descaling scraper.
4. The pulverized coal furnace induced draft fan outlet pressure measuring device of claim 1, wherein: the connecting pipeline, the measuring branch pipe, the pipeline pressure detector and the pressurizing pipeline are communicated with each other, the connecting pipeline is designed to be an L-shaped pipeline, the measuring branch pipe is fixedly connected to one horizontal end of the connecting pipeline, and the pressurizing pipeline is fixedly connected to one vertical end of the connecting pipeline.
5. The pulverized coal furnace induced draft fan outlet pressure measuring device of claim 4, wherein: the horizontal one end of connecting tube links to each other with the draught fan air outlet, the perpendicular one end of connecting tube links to each other with the spiral booster compressor air intake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222723214.4U CN218156644U (en) | 2022-10-17 | 2022-10-17 | Pulverized coal furnace draught fan outlet pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222723214.4U CN218156644U (en) | 2022-10-17 | 2022-10-17 | Pulverized coal furnace draught fan outlet pressure measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218156644U true CN218156644U (en) | 2022-12-27 |
Family
ID=84571063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222723214.4U Active CN218156644U (en) | 2022-10-17 | 2022-10-17 | Pulverized coal furnace draught fan outlet pressure measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218156644U (en) |
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2022
- 2022-10-17 CN CN202222723214.4U patent/CN218156644U/en active Active
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