CN2864641Y - Block-prevention purging device for wind pressure measuring - Google Patents
Block-prevention purging device for wind pressure measuring Download PDFInfo
- Publication number
- CN2864641Y CN2864641Y CN 200520139694 CN200520139694U CN2864641Y CN 2864641 Y CN2864641 Y CN 2864641Y CN 200520139694 CN200520139694 CN 200520139694 CN 200520139694 U CN200520139694 U CN 200520139694U CN 2864641 Y CN2864641 Y CN 2864641Y
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- pressure
- gas
- pipe
- radial hole
- right cylinder
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Abstract
The utility model discloses a plugging prevention blowing and clearing device for wind pressure measurement, which consists of pressure adjustment gas and water separator, rotameter, blowing tube and pressure sampler, whose outer end is connected with a pressure gauge through a pressure transmitter, and the gas and water separator is equipped with a gas inlet, which is connected with the gas source and whose outlet is connected with the inlet of the rotameter. It is characterized in that one end of the gas inlet of the blowing tube is equipped with a compensation mechanism, which contains a cylinder, and the rotemeter is connected with one end of the cylinder relying on the pipeline. The cylinder is equipped axially with a center hole, the radial hole of whose one side is equipped with an adjustment bolt and the radial hole of whose other side is connected with the pressure sampler. The utility model can prevent the mouth of the pressure sampler from being plugged, ensuring the accuracy of measurement results and the normal operation of boilers. It can be used for measurement of the negative pressure of coal-fired boiler hearth.
Description
(1) technical field
The utility model relates to a kind of device for pressure measurement.Be the anti-blocking blow device of wind pressure measurement that is used for measuring the coal-burning type boiler combustion chamber draft specifically.
(2) background technology
For guaranteeing the normal operation of coal-burning boiler, in boiler running process, need monitor the negative pressure of its burner hearth at any time.Therefore, on coal-burning type boiler, all is furnished with the wind pressure measurement device.Traditional wind pressure measurement device is made up of permanent air-flow control and block-proof pressure-taking two parts.Wherein, permanent air-flow control section is formed by connecting by pipeline by pressure regulation moisture trap, spinner-type flowmeter and tensimeter.The block-proof pressure-taking part then is made up of scavenging duct and pressure pipe, and scavenging duct wherein inserts in the pressure pipe, by the air-flow that enters in the gas blow pipe pressure pipe mouth of pipe is purged.Because gas blow pipe inserts in the pressure pipe, if the air-flow that enters in the gas blow pipe is too big, the pressure that the pressure pipe is got is just very inaccurate.If the air-flow that enters in the gas blow pipe is too little, then can not blow away the control of dust at pressure pipe mouth of pipe place, the time one is long, and these controls of dust can stop up the pressure pipe mouth of pipe.Not only have influence on the accuracy of measurement, and be difficult to guarantee the safe operation of boiler.
(3) utility model content
The technical problems to be solved in the utility model provides the anti-blocking blow device of a kind of wind pressure measurement.The anti-blocking blow device of this wind pressure measurement can prevent that the pressure pipe mouth of pipe from stopping up, and can guarantee the accuracy of measurement result and the normal operation of boiler again.
For addressing the above problem, the utility model is taked following technical scheme:
The anti-blocking blow device of wind pressure measurement of the present utility model, comprise pressure regulation moisture trap, spinner-type flowmeter, gas blow pipe and pressure pipe, the outer end of pressure pipe joins by pressure unit and tensimeter, air intake opening is arranged on the moisture trap, this air intake opening is connected with source of the gas, and the import of its gas outlet and spinner-type flowmeter is joined.Be characterized in that gas blow pipe air intake opening one end has compensation mechanism, this compensation mechanism contains right cylinder, and spinner-type flowmeter is connected with a cylindrical end by pipeline.Cylindrical axially have a center pit, and the interlude diameter of this center pit is less than two sections diameters at its two ends, thus the two intersegmental formation conical sections at section and two ends therebetween.Radial hole is arranged on the right cylinder, and this radial hole is on that section bellmouth of close gas blow pipe gas outlet one end.Be furnished with the adjusting bolt in that section radial hole of center pit one side, that of its opposite side section radial hole is communicated with the pressure pipe.
Take such scheme, have the following advantages:
Because the anti-blocking blow device of wind pressure measurement of the present utility model, its gas blow pipe air intake opening one end has compensation mechanism, and this compensation mechanism contains right cylinder, and spinner-type flowmeter is connected with a cylindrical end by pipeline.Cylindrical axially have a center pit, and the interlude diameter of this center pit is less than two sections diameters at its two ends, thus the two intersegmental formation conical sections at section and two ends therebetween.Radial hole is arranged on the right cylinder, and this radial hole is on that section bellmouth of close gas blow pipe gas outlet one end.Be furnished with the adjusting bolt in that section radial hole of center pit one side, that of its opposite side section radial hole is communicated with the pressure pipe.Change to regulate the spacing of bolt inner end and that section radial hole inner end of its opposite side, can change the interlude sectional area that gas passes through the right cylinder center pit, the dynamic pressure that makes gas and gas stream are crossed the resistance that scavenging duct produces and are equated.So, the gaseous tension that enters in that section radial hole of regulating the bolt offside is the interior true pressure of burner hearth.Thereby make pressure tappings away from burner hearth, both prevented the obstruction of the pressure mouth of pipe, guaranteed the accuracy of measurement result and the safe operation of boiler again.
(4) description of drawings
Accompanying drawing is a wind pressure measurement of the present utility model with anti-blocking blow device synoptic diagram.
(5) embodiment
As shown in drawings, wind pressure measurement of the present utility model contains pressure regulation moisture trap 14, spinner-type flowmeter 6, gas blow pipe 10 and pressure pipe 2 with anti-blocking blow device.On the pressure regulation moisture trap 14 import and export is arranged, its import is connected with source of the gas (air compressor) 13 by pipeline and valve 15, and the import with spinner-type flowmeter 6 is connected by pipeline in its outlet.Gas blow pipe 10 1 ends are provided with compensation mechanism, and this compensation mechanism contains a right cylinder 7, and the outlet of spinner-type flowmeter 6 links to each other with an end of right cylinder 7 by pipeline.Right cylinder 7 axially be processed with center pit 5, the one section diameter in the centre of center pit 5 is less than two sections diameters at its two, thus therebetween section and two that two intersegmentally form a conical section again respectively.The centre of right cylinder 7 is processed with radial hole, and this radial hole is on that section bellmouth of close gas blow pipe 10 gas outlets one end.Because right cylinder 7 axially has a center pit 5, thereby makes radial hole be divided into two sections.Be furnished with in one section radial hole wherein and regulate bolt 8, the outer end of another section radial hole then is the sealing shape with the inner end of pressure pipe 2 and welds together.The outer end of pressure pipe 2 is connected with a tensimeter 4 by pressure unit 3 and pipeline.
The outside of gas blow pipe 10 also is with pillar 11, and 10 of pillar 11 and gas blow pipes leave gap 9, and their end adopts welding manner to be connected with an end of right cylinder 7, and the other end stretches in the burner hearth of boiler 12 under user mode.
During work, the gas of sending here by source of the gas 13 enter pressure regulation moisture trap 14 carry out gas, moisture from after, tensimeter 4 is given on the one road, another road is given spinner-type flowmeter 6 and is adjusted the air blowing flow by it.In spinner-type flowmeter 6 adjusted permanent air-flows are admitted to the axial center pit 5 of right cylinder 7.Regulate bolt 8 by screwing, the radial hole inner end that changes its inner end and its opposite side is the distance of 1 of pressure tappings, can change the sectional area that gas passes through, and makes the dynamic pressure of gas and gas stream cross the dynamic pressure difference that gas blow pipe 10 produced and offsets.So, obtain true pressure in the burner hearth by pressure tappings 1, purge gas purges continuously to pressure pipe 2 after the compensation mechanism compensation, has realized that measurement and purging neglect neither.
Claims (2)
1. the anti-blocking blow device of wind pressure measurement, comprise pressure regulation moisture trap (14), spinner-type flowmeter (6), gas blow pipe (10) and pressure pipe (2), the outer end of pressure pipe (2) joins by pressure unit (3) and tensimeter (4), the pressure regulation moisture trap has air intake opening on (14), this air intake opening is connected with source of the gas (13), and the import of its gas outlet and spinner-type flowmeter (6) is joined; It is characterized in that gas blow pipe (10) air intake opening one end has compensation mechanism, this compensation mechanism contains right cylinder (7), and spinner-type flowmeter (6) is connected by the end of pipeline with right cylinder (7); Right cylinder (7) center pit (5) axially arranged, the interlude diameter of this center pit is less than two sections diameters at its two ends, thus the two intersegmental formation conical sections at section and two ends therebetween; Right cylinder has radial hole on (7), and this radial hole is on that section bellmouth of close gas blow pipe gas outlet one end; Be furnished with adjusting bolt (8) in that section radial hole of center pit one side, that of its opposite side section radial hole is communicated with pressure pipe (2).
2. the anti-blocking blow device of wind pressure measurement according to claim 1, it is characterized in that there is pillar (11) gas blow pipe (10) outside, and between gas blow pipe (10) and pillar (11) gapped (9), be the sealing shape between right cylinder (7) one ends of their end and compensation mechanism and link together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520139694 CN2864641Y (en) | 2005-12-11 | 2005-12-11 | Block-prevention purging device for wind pressure measuring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520139694 CN2864641Y (en) | 2005-12-11 | 2005-12-11 | Block-prevention purging device for wind pressure measuring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2864641Y true CN2864641Y (en) | 2007-01-31 |
Family
ID=37677092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520139694 Expired - Fee Related CN2864641Y (en) | 2005-12-11 | 2005-12-11 | Block-prevention purging device for wind pressure measuring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2864641Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713677A (en) * | 2013-12-17 | 2015-06-17 | 贵阳铝镁设计研究院有限公司 | Blocking-preventing method and device for boiler combustion chamber negative pressure measuring pipeline |
-
2005
- 2005-12-11 CN CN 200520139694 patent/CN2864641Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713677A (en) * | 2013-12-17 | 2015-06-17 | 贵阳铝镁设计研究院有限公司 | Blocking-preventing method and device for boiler combustion chamber negative pressure measuring pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070131 Termination date: 20100111 |