CN202648713U - Large metering equipment of short duct flows - Google Patents
Large metering equipment of short duct flows Download PDFInfo
- Publication number
- CN202648713U CN202648713U CN 201220227855 CN201220227855U CN202648713U CN 202648713 U CN202648713 U CN 202648713U CN 201220227855 CN201220227855 CN 201220227855 CN 201220227855 U CN201220227855 U CN 201220227855U CN 202648713 U CN202648713 U CN 202648713U
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- air channel
- measuring device
- wind measuring
- flow
- air duct
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Abstract
The utility model discloses large metering equipment of short air duct flows. The large metering equipment comprises an air duct and a rectifying device and a distributing device which are arranged in the air duct. The distributing device is arranged at one end of the rectifying device which is a rectifying grille, abuts against the inner wall of the air duct tightly, and comprises a plurality of air duct separation tubes which are mutually connected and evenly distributed and provided with air metering units inside. According to the mode, the large metering equipment of short air duct flows can achieve air metering in a cold and hot air joint section, and good metering accuracy is provided.
Description
Technical field
The utility model relates to boiler exam device field, particularly relates to a kind of large-scale short air channel flow measurement device.
Background technology
For a long time, the air quantity on-line measurement of large section duct is a difficult problem, air current flow in the wind trunk often is subject to that air door, runner are turned, shunt and confluxed, the expansion of pipeline section and the impact of external factor such as dwindle, and makes the wind trunk Flows develop into flowing of velocity flow profile complexity.The measurement of air quantity requires to have the flow field to stablize or fluid similarity, but the operation adjustment process can not make mobile stablizing in the air channel, sometimes also makes its velocity flow profile similar also impossible.Measure accurately, just necessary current stabilization rectification satisfy the requirement of measurement mechanism, but the measurement requirement can't be satisfied sometimes in field condition and locus.
Joining the medium-speed milling pulverization system flow measurement device is the important component part of burning pulverized coal preparation system.The performance of the performance of flow measurement device and accuracy directly affect the safe operation of boiler unit.In addition, well behaved flow measurement is to realize one of necessary condition of burning pulverized coal preparation system robotization.
The utility model content
The technical matters that the utility model mainly solves provides a kind of large-scale short air channel flow measurement device, can realize the very interior air measuring of the section of closing of cold-hot wind, has preferably measurement accuracy.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of large-scale short air channel flow measurement device is provided, comprise: the air channel, be arranged on fairing and part flow arrangement in the air channel, described part flow arrangement is arranged on fairing one end, described fairing is flow straightening grid, described part flow arrangement is close to the air channel inwall, described part flow arrangement comprises a plurality of air channels separating tube, interconnect between the separating tube of described a plurality of air channels and evenly distributed, be provided with wind measuring device in the separating tube of described air channel.
In preferred embodiment of the utility model, described flow straightening grid is even or heterogeneous.
In preferred embodiment of the utility model, described wind measuring device is connected with pressure transducer, and described pressure transducer is connected with calculation control device.
In preferred embodiment of the utility model, described wind measuring device is airfoil type wind measuring device, venturi wind measuring device, double-venturi wind measuring device or focus wind measuring device.
In preferred embodiment of the utility model, the xsect of described air channel separating tube is rounded or square.
The beneficial effects of the utility model are: the large-scale short air channel of the utility model flow measurement device can be realized the very interior air measuring of the section of closing of cold-hot wind, has preferably measurement accuracy.
Description of drawings
Fig. 1 is the structural representation of the large-scale short air channel of the utility model flow measurement device one preferred embodiment;
The mark of each parts is as follows in the accompanying drawing: 1, air channel, 2, fairing, 3, part flow arrangement, 4, the air channel separating tube, 5, wind measuring device, 6, pressure transducer, 7, calculation control device.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.
See also Fig. 1, a kind of large-scale short air channel flow measurement device, comprise: air channel 1, be arranged on fairing 2 and part flow arrangement 3 in the air channel, described part flow arrangement 3 is arranged on fairing 2 one ends, described fairing 2 is flow straightening grid, described part flow arrangement 3 is close to air channel 1 inwall, described part flow arrangement 3 comprises a plurality of air channels separating tube 4, interconnect also evenly distributed between described a plurality of air channels separating tube 4, be provided with wind measuring device 5 in the described air channel separating tube 4, part flow arrangement 3 is cut apart wind, thereby reaches stable smooth purpose.
In addition, described flow straightening grid is even or heterogeneous.
In addition, described wind measuring device 5 is connected with pressure transducer 6, and described pressure transducer 6 is connected with calculation control device 7, and wind measuring device 5 passes to pressure transducer 6 with the data that collect, then the data that receive of 7 pairs of pressure transducers 6 of calculation control device are calculated, and obtain a result.
In addition, described wind measuring device 5 is airfoil type wind measuring device, venturi wind measuring device, double-venturi wind measuring device or focus wind measuring device, according to on-site actual situations, satisfies field position, measuring accuracy, drag size requirement etc. and determines.
In addition, the xsect of described air channel separating tube 4 is rounded or square, and air channel separating tube 4 can change according to the shape in air channel 1, guarantees that the wind of q.s enters air channel separating tube 4, can measure accurately flow.
Be different from prior art, the large-scale short air channel of the utility model flow measurement device can be realized the very interior air measuring of the section of closing of cold-hot wind, has preferably measurement accuracy.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (5)
1. one kind large-scale short air channel flow measurement device, it is characterized in that, comprise: the air channel, be arranged on fairing and part flow arrangement in the air channel, described part flow arrangement is arranged on fairing one end, described fairing is flow straightening grid, and described part flow arrangement is close to the air channel inwall, and described part flow arrangement comprises a plurality of air channels separating tube, interconnect between the separating tube of described a plurality of air channels and evenly distributed, be provided with wind measuring device in the separating tube of described air channel.
2. large-scale short air channel according to claim 1 flow measurement device is characterized in that, described flow straightening grid is even or heterogeneous.
3. large-scale short air channel according to claim 1 flow measurement device is characterized in that, described wind measuring device is connected with pressure transducer, and described pressure transducer is connected with calculation control device.
4. large-scale short air channel according to claim 1 flow measurement device is characterized in that, described wind measuring device is airfoil type wind measuring device, venturi wind measuring device, double-venturi wind measuring device or focus wind measuring device.
5. large-scale short air channel according to claim 1 flow measurement device is characterized in that, the xsect of described air channel separating tube is rounded or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220227855 CN202648713U (en) | 2012-05-21 | 2012-05-21 | Large metering equipment of short duct flows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220227855 CN202648713U (en) | 2012-05-21 | 2012-05-21 | Large metering equipment of short duct flows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202648713U true CN202648713U (en) | 2013-01-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220227855 Expired - Fee Related CN202648713U (en) | 2012-05-21 | 2012-05-21 | Large metering equipment of short duct flows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202648713U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336141A (en) * | 2013-06-20 | 2013-10-02 | 国家电网公司 | Wind speed and wind volume measuring device based on static pressure principle |
| CN104568027A (en) * | 2015-02-05 | 2015-04-29 | 辽宁毕托巴科技有限公司 | Pitotbar gas flow measuring device |
| CN104614547A (en) * | 2015-01-12 | 2015-05-13 | 中国矿业大学 | Online monitor system of coal mine air shaft ventilation flow rate |
| CN105618244A (en) * | 2016-03-17 | 2016-06-01 | 苏州西热节能环保技术有限公司 | Primary air flow mixing and equilibrating device for round air duct of coal mill inlet |
-
2012
- 2012-05-21 CN CN 201220227855 patent/CN202648713U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336141A (en) * | 2013-06-20 | 2013-10-02 | 国家电网公司 | Wind speed and wind volume measuring device based on static pressure principle |
| CN104614547A (en) * | 2015-01-12 | 2015-05-13 | 中国矿业大学 | Online monitor system of coal mine air shaft ventilation flow rate |
| CN104568027A (en) * | 2015-02-05 | 2015-04-29 | 辽宁毕托巴科技有限公司 | Pitotbar gas flow measuring device |
| CN105618244A (en) * | 2016-03-17 | 2016-06-01 | 苏州西热节能环保技术有限公司 | Primary air flow mixing and equilibrating device for round air duct of coal mill inlet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20190521 |