CN2594795Y - Block-proof wing blast meter - Google Patents
Block-proof wing blast meter Download PDFInfo
- Publication number
- CN2594795Y CN2594795Y CN 02275493 CN02275493U CN2594795Y CN 2594795 Y CN2594795 Y CN 2594795Y CN 02275493 CN02275493 CN 02275493 CN 02275493 U CN02275493 U CN 02275493U CN 2594795 Y CN2594795 Y CN 2594795Y
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- wing
- pressure
- blast
- block
- utility
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Abstract
The utility model relates to a block-proof wing blast meter. The utility model comprises a wing which is arranged in a blast passage, a positive taking pressure hole and a negative taking pressure hole which are processed on the wing, and a pressure sensing pipe which is arranged in the middle of the wing. The pressure sensing pipe is arranged between the pressure taking holes and a pressure guide pipe. The utility model is characterized in that the horizontal arragement of the pressure sensing pipe is changed into upwards oblique arrangement, the pressure sensing pipe and the surface of the head part of the wing form an included angle of 20-70 DEG, the pressure guide pipe is kept in vertical arranement, and the upper end and the lower end of the pressure guide pipe are provided with block-proof screw caps. The block-proof wing blast meter is designed, which completely solves the blocking problem of a blast meter. The utility model can be used on the automatic computation, automatic regulation and automatic control of various gas flows. The block-proof wing blast meter is particularly suitable for the blast supply of power plant boilers and iron making blast furnaces and the measurement and the control of coal gas transportation.
Description
[technical field] the utility model relates to a kind of block-resistant type airfoil measuring equipment, and it belongs to measurement of fluid flow process instrument technical field of automation.
[background technology] is present, the primary element that is used for big flow gas flow measurement both at home and abroad is the airfoil type wind measuring device substantially, and this device all is that the pressure nozzle that the stationary point of wing (or string point) links to each other with pressure guiding pipe is made horizontally disposed (promptly becoming an angle of 90 degrees with the wing head surface) without exception.When containing suspended particulate substance in the tested gas, pressure nozzle is very easily blocked, causes flow measurement instrument normally to move.This is the ubiquitous problem of airfoil type wind measuring device.
Increase along with generating set capacity, adopt rotary regenerative air preheater more and more, cold wind will blow away the dust stratification that accumulates on the rotary preheater heating surface after by this primary heater, no matter so be wind, or secondary air in hot blast, all contain a large amount of suspended particulate substances, conventional airfoil type wind measuring device or other type measuring equipment are stopped up.In order to prevent that the airfoil type wind measuring device from stopping up, must set up complicated (or artificial) automatically purging system, increased equipment investment; Often (even every day) purging airfoil type wind measuring device not only can increase the plant maintenance workload, and can directly influence the normal operation of automated system, and the safety of generating plant, economical operation are endangered.Still do not have the solution product of topic around here at present both at home and abroad, in relevant document, do not find to solve the technical scheme of airfoil type wind measuring device blockage problem yet.
[summary of the invention] the purpose of this utility model is to provide a kind of block-resistant type airfoil measuring equipment, and this device fundamentally solves the airfoil measuring equipment blockage problem that is in operation, simultaneously also for directly measure fluid flow provide a kind of newly by way of.
The purpose of this utility model realizes by following technological means.
A kind of block-resistant type airfoil measuring equipment, comprise on the wing that splits in the air channel, the wing and be processed with positive and negative pressure port, be arranged on pressure nozzle in the wing between wing pressure port and pressure guiding pipe, it is characterized in that said pressure nozzle by the horizontally disposed layout that is inclined upwardly that changes into, become 20 degree-70 degree angles with the wing head surface.Pressure guiding pipe in the above-mentioned airfoil measuring equipment is arranged vertically, and pressure guiding pipe is provided with anti-blocking nut in two ends up and down.
The utility model has following advantage:
1. because pressure nozzle is inclined upwardly, pressure guiding pipe is arranged vertically, and suspended particulate substance may not lodged in pressure nozzle and the pressure guiding pipe, so can not stop up.
2. do not need to set up purger, can reduce investment.
3. be in operation, do not need to purge, significantly reduce maintenance workload.
4. thereby the reliability service that can fundamentally guarantee automated system makes the safety of generating plant, and therefore economy can not be affected.
5. once because certain is improper former thereby obstruction taken place, as long as the upper and lower nut of pressure guiding pipe is dismantled, dust stratification just can be discharged smoothly.
[description of drawings] Fig. 1 is the utility model example structure front elevation.
Fig. 2 is a structure vertical view shown in Figure 1.
Structure side view shown in Fig. 3 bitmap 1.
Introduce the utility model in detail below in conjunction with accompanying drawing.
[embodiment] as shown in Figure 1, 2, 3, the block-resistant type airfoil measuring equipment is to measure gas flow equipment in rectangle or the circular air channel 4, measure the output of this device by differential pressure transmitter with the pressure difference of gas flow for certain funtcional relationship, just can know the size of tested gas flow.The solution of the utility model technology is:
1, changes pressure nozzle 2 into the layout that is inclined upwardly (becoming the oblique angle of 20 degree-70 degree with wing 5 head surfaces) by horizontally disposed (becoming 90 degree with wing 5 heads).
2, pressure guiding pipe 1 is arranged vertically.
3, pressure guiding pipe 1 upper/lower terminal is provided with anti-blocking nut 3.
4, wing 5 heads are provided with positive and negative pressure tap 6.
Claims (3)
1, a kind of block-resistant type airfoil measuring equipment, comprise on the wing [5] that splits in air channel [4], the wing [5] and be processed with pressure port [6], the pressure nozzle [2] that is arranged in the wing [5] is positioned between wing pressure port [6] and the pressure guiding pipe [1], it is characterized in that said pressure nozzle [2] by the horizontally disposed layout that is inclined upwardly that changes into, become 20 degree-70 degree angles with wing [5] head surface.
2, airfoil measuring equipment according to claim 1 is characterized in that said pressure guiding pipe [1] is arranged vertically.
3, airfoil measuring equipment according to claim 1 is characterized in that said pressure guiding pipe [1] is provided with anti-blocking nut [3] in two ends up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275493 CN2594795Y (en) | 2002-09-26 | 2002-09-26 | Block-proof wing blast meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275493 CN2594795Y (en) | 2002-09-26 | 2002-09-26 | Block-proof wing blast meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2594795Y true CN2594795Y (en) | 2003-12-24 |
Family
ID=33739525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02275493 Expired - Fee Related CN2594795Y (en) | 2002-09-26 | 2002-09-26 | Block-proof wing blast meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2594795Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424975A (en) * | 2015-11-03 | 2016-03-23 | 中国科学院电子学研究所 | Wind sensing part applied to wind speed measuring instrument |
| CN109141546A (en) * | 2018-08-30 | 2019-01-04 | 周冰 | Tandem aerofoil profile differential pressure block cross-sectional flow meter, differential pressure measuring installation and measurement method |
-
2002
- 2002-09-26 CN CN 02275493 patent/CN2594795Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424975A (en) * | 2015-11-03 | 2016-03-23 | 中国科学院电子学研究所 | Wind sensing part applied to wind speed measuring instrument |
| CN109141546A (en) * | 2018-08-30 | 2019-01-04 | 周冰 | Tandem aerofoil profile differential pressure block cross-sectional flow meter, differential pressure measuring installation and measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |