CN103336141A - Wind speed and wind volume measuring device based on static pressure principle - Google Patents
Wind speed and wind volume measuring device based on static pressure principle Download PDFInfo
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- CN103336141A CN103336141A CN2013102463817A CN201310246381A CN103336141A CN 103336141 A CN103336141 A CN 103336141A CN 2013102463817 A CN2013102463817 A CN 2013102463817A CN 201310246381 A CN201310246381 A CN 201310246381A CN 103336141 A CN103336141 A CN 103336141A
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Abstract
The invention relates to a wind speed and wind volume measuring device based on the static pressure principle. The wind speed and wind volume measuring device comprises a box body with two openings at two ends; one opening is an air inlet, and the other opening is an air outlet; a rectification grating is arranged and mounted in the air inlet; the inner box body behind the rectification grating serves as an air flow channel; pitot tubes are uniformly laid in the air flow channel; each pitot tube is only provided with an air inlet and a full-pressure port; the full-pressure port of each pitot tube is communicated with a pitot tube full-pressure gathering tube; the pitot tube full-pressure gathering tube is communicated with a full-pressure gathering tube; a full-pressure conveying tube is arranged and mounted on the full-pressure gathering tube; a static pressure testing tube is laid in the air flow channel. The wind speed and wind volume measuring device combines two testing methods, namely an air channel surface test and a pitot tube static pressure testing hole test, utilizes testing air channel static pressure on the air channel surface to replace the pitot tube static pressure, and reduces route I pitot tube static pressure testing pipeline, so as to reduce air channel throttling; the box body is used to replace part of existing air channel, thereby solving the deficiency of lack of straight tube for wind speed measuring device in a large wind box structure.
Description
Technical field
The present invention relates to a kind of wind speed and wind measuring device based on the static pressure principle.
Background technology
The burning adjustment of thermal power plant's pulverized coal firing boiler mainly changes the wind speed of overfire air port by the little throttle opening of regulating each secondary wind, but because the straight section in each overfire air port connection air channel is shorter, air channel flow field instability, test condition to the wind speed air quantity is not good, test accuracy is relatively poor, can not satisfy the demand that instructs operation to adjust.The burning adjustment that becomes more meticulous is conducive to reduce boiler NO
XThe discharging and prevent that boiler coke is very important to today of environmental requirement strictness.Measuring wind speed is the necessary condition that the burning that becomes more meticulous is adjusted accurately and reliably.
Differential pressure flowmeter is the wind speed measuring device of using always, and existing differential pressure type flow apparatus is installed on the field apparatus owing to can not find long original paper place airflow direction of straight length test and measure problems such as original paper out of plumb, proving installation self resistance are big, causes testing inaccurate.
Summary of the invention
The object of the present invention is to provide a kind of each spout secondary wind wind speed measuring device that is applied to dichotomous air channel structure or big bellows structure pulverized coal firing boiler.
The object of the present invention is achieved like this: based on the wind speed and wind measuring device of static pressure principle, the casing that comprises an open at both ends, one port is air inlet, the another port is air outlet, be equiped with flow straightening grid in the air inlet, the box house space at flow straightening grid rear portion is gas channel, in gas channel, evenly be laid with pitot tube, pitot tube has only air inlet and total head port, the total head port of pitot tube gathers pipe with the pitot tube total head and is communicated with, the pitot tube total head gathers pipe and gathers to manage with total head and be communicated with, and total head gathers and is equiped with the total head transfer tube on the pipe, also is laid with the static pressure test pipe in gas channel.
Because carry out technique scheme, the present invention adopts standard pitot tube as the one-shot measurement original paper, pitot tube is compared the measuring accuracy height with other forms of measurement original papers such as bourdon's tube, wing, backing tubes.This wind speed measuring device can be installed on each secondary wind airduct that adopts dichotomous air channel structure, replace the existing air channel of a part with casing, before can being installed in each overfire air port air channel of the big bellows of pulverized coal firing boiler secondary wind inside, having solved big bellows structure does not effectively have straight tube that the shortcoming of wind speed measuring device can be installed yet.In power industry standard " test of station boiler blower fan field performance ", the test of static pressure there are two kinds of methods, the first is at the air channel surface test, and it two is the static pressure test hole tests that utilize pitot tube.The purpose of two kinds of method of testings is identical, and the application utilizes two kinds of method of testing combinations at surface test air channel, air channel static pressure, replaces the pitot tube static pressure, and its advantage is to reduce by one road pitot tube static pressure test pipeline, and is simple in structure, thereby reduces the air channel throttling.
Description of drawings: technical scheme of the present invention is provided by following drawings and Examples:
Fig. 1 is square wind speed and wind measuring device structural representation based on the static pressure principle;
Fig. 2 is square wind speed and wind measuring device side-looking structural representation based on the static pressure principle;
Fig. 3 is circular wind speed and wind measuring device structural representation based on the static pressure principle;
Fig. 4 is circular wind speed and wind measuring device structural representation based on the static pressure principle
Legend: 1. flow straightening grid, 2. the pitot tube total head gathers pipe, 3. pitot tube, 4. static pressure test pipe, 5. total head gathers pipe, 6. total head transfer tube, 7. gas channel.
Embodiment:
The present invention is not subjected to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
Embodiment: shown in Fig. 1-4, comprise the casing of an open at both ends based on the wind speed and wind measuring device of static pressure principle, a port is air inlet, and the another port is air outlet, is equiped with flow straightening grid 1 in the air inlet, and flow straightening grid 1 covers air inlet fully.The box house space at flow straightening grid 1 rear portion is gas channel 7, in gas channel 7, evenly be laid with pitot tube 3, pitot tube 3 has only air inlet and total head port, the total head port of pitot tube 3 gathers pipe 2 with the pitot tube total head and is communicated with, the pitot tube total head gathers pipe 2 and total head and gathers and manage 5 and be communicated with, total head gathers pipe and is equiped with total head transfer tube 6 on 5, the air-flow total head is delivered on the differential pressure proving installation measures.In gas channel 7, also be laid with static pressure test pipe 4.Flow straightening grid 1 covers air inlet fully.
As shown in Figure 1, 2, every row's pitot tube 3 and a pitot tube total head gather pipe 2 and link to each other, and each pitot tube total head gathers pipe 2 and total head and gathers and manage 5 and be communicated with, and total head gathers manages 5 and be installed in outside the casing.Be laid with static pressure test pipe 4 at the rear wall of casing and the inwall middle part of left and right sides wall, casing is stretched out at static pressure test pipe 4 two ends.
Shown in Fig. 3,4, casing is cylindrical shape, and total head gathers the circle centre position that pipe 5 is fixed on gas channel 7 round sections, is positioned at casing, the ring total head gathers pipe 5 circumference equi-spaced apart laying pitot tube total head and gathers pipe 2, gathers every pitot tube total head and evenly lays pitot tube 3 on the pipe 2.Ring casing circumference is laid with two static pressure test pipes 4 that are right-angled intersection.
In wind speed measuring device when work,, air-flow is earlier by flow straightening grid 1, be subjected to the constraint of flow straightening grid 1 after airflow direction stable, the direction of prolonging gas channel 7 flows.A plurality of pitot tubes 3 are installed in the gas channel 7, realize multimetering, air-flow airflow direction when arriving pitot tube 3 after flow straightening grid 1 rectification is parallel with the direction of pitot tube 3, subsequently air-flow gather along the pitot tube total head respectively manage 2, static pressure test pipe 4 sends on the pressure difference transmitter and measures.
Above technical characterictic has constituted most preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease inessential technical characterictic according to actual needs, satisfies the needs of different situations.
Claims (5)
1. wind speed and wind measuring device based on the static pressure principle, the casing that comprises an open at both ends, one port is air inlet, the another port is air outlet, it is characterized in that: be equiped with flow straightening grid in the air inlet, the box house space at flow straightening grid rear portion is gas channel, in gas channel, evenly be laid with pitot tube, pitot tube has only air inlet and total head port, the total head port of pitot tube gathers pipe with the pitot tube total head and is communicated with, the pitot tube total head gathers pipe and gathers to manage with total head and be communicated with, and total head gathers and is equiped with the total head transfer tube on the pipe, also is laid with the static pressure test pipe in gas channel.
2. the wind speed and wind measuring device based on the static pressure principle as claimed in claim 1 is characterized in that: every row's pitot tube gathers pipe with a pitot tube total head and links to each other, and each pitot tube total head gathers pipe and gathers to manage with total head and be communicated with, and total head gathers pipe and is installed in outside the casing.
3. the wind speed and wind measuring device based on the static pressure principle as claimed in claim 1 is characterized in that: be laid with the static pressure test pipe at the rear wall of casing and the inwall middle part of left and right sides wall, casing is stretched out at static pressure test pipe two ends.
4. the wind speed and wind measuring device based on the static pressure principle as claimed in claim 1, it is characterized in that: casing is cylindrical shape, total head gathers the circle centre position that pipe is fixed on the gas channel round section, be positioned at casing, the ring total head gathers pipe circumference equi-spaced apart laying pitot tube total head and gathers pipe, gathers every pitot tube total head and evenly lays pitot tube on the pipe.
5. the wind speed and wind measuring device based on the static pressure principle as claimed in claim 1 is characterized in that: encircle the casing circumference and be laid with two static pressure test pipes that are right-angled intersection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102463817A CN103336141A (en) | 2013-06-20 | 2013-06-20 | Wind speed and wind volume measuring device based on static pressure principle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102463817A CN103336141A (en) | 2013-06-20 | 2013-06-20 | Wind speed and wind volume measuring device based on static pressure principle |
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| CN103336141A true CN103336141A (en) | 2013-10-02 |
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| CN2013102463817A Pending CN103336141A (en) | 2013-06-20 | 2013-06-20 | Wind speed and wind volume measuring device based on static pressure principle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568027A (en) * | 2015-02-05 | 2015-04-29 | 辽宁毕托巴科技有限公司 | Pitotbar gas flow measuring device |
| CN107289170A (en) * | 2016-03-31 | 2017-10-24 | 倚世节能科技（上海）有限公司 | Ventilation valve |
| CN108489559A (en) * | 2018-05-24 | 2018-09-04 | 合肥杜威智能科技股份有限公司 | A kind of apparatus for measuring air quantity |
| WO2023151565A1 (en) * | 2022-02-09 | 2023-08-17 | 付成 | Modular flow measurement method and apparatus, and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2557925Y (en) * | 2002-07-25 | 2003-06-25 | 浙江大学 | Large section wind channel blow quantity separated measurer |
| CN2672621Y (en) * | 2004-01-14 | 2005-01-19 | 华东电力试验研究院 | Porous even speed wind amount measurer |
| CN202648713U (en) * | 2012-05-21 | 2013-01-02 | 常州市新港热电有限公司 | Large metering equipment of short duct flows |
| CN203535068U (en) * | 2013-06-20 | 2014-04-09 | 国家电网公司 | Measuring device for wind speed and wind volume based on static pressure principle |
-
2013
- 2013-06-20 CN CN2013102463817A patent/CN103336141A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2557925Y (en) * | 2002-07-25 | 2003-06-25 | 浙江大学 | Large section wind channel blow quantity separated measurer |
| CN2672621Y (en) * | 2004-01-14 | 2005-01-19 | 华东电力试验研究院 | Porous even speed wind amount measurer |
| CN202648713U (en) * | 2012-05-21 | 2013-01-02 | 常州市新港热电有限公司 | Large metering equipment of short duct flows |
| CN203535068U (en) * | 2013-06-20 | 2014-04-09 | 国家电网公司 | Measuring device for wind speed and wind volume based on static pressure principle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568027A (en) * | 2015-02-05 | 2015-04-29 | 辽宁毕托巴科技有限公司 | Pitotbar gas flow measuring device |
| CN107289170A (en) * | 2016-03-31 | 2017-10-24 | 倚世节能科技（上海）有限公司 | Ventilation valve |
| CN108489559A (en) * | 2018-05-24 | 2018-09-04 | 合肥杜威智能科技股份有限公司 | A kind of apparatus for measuring air quantity |
| WO2023151565A1 (en) * | 2022-02-09 | 2023-08-17 | 付成 | Modular flow measurement method and apparatus, and application |
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Application publication date: 20131002 |