CN203535068U - Measuring device for wind speed and wind volume based on static pressure principle - Google Patents
Measuring device for wind speed and wind volume based on static pressure principle Download PDFInfo
- Publication number
- CN203535068U CN203535068U CN201320355647.7U CN201320355647U CN203535068U CN 203535068 U CN203535068 U CN 203535068U CN 201320355647 U CN201320355647 U CN 201320355647U CN 203535068 U CN203535068 U CN 203535068U
- Authority
- CN
- China
- Prior art keywords
- tube
- static pressure
- total head
- pitot tube
- measuring device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 36
- 238000012360 testing method Methods 0.000 claims abstract description 28
- 238000012546 transfer Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Landscapes
- Measuring Fluid Pressure (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model relates to a measuring device for the wind speed and the wind volume based on the static pressure principle. The measuring device comprises a box body with two open ends; one end is an air inlet, and the other end is an air outlet; a rectification grid is arranged in the air inlet; the inner space of the box body behind the rectification grid serves as an airflow channel; pitot tubes are uniformly arranged in the airflow 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 transmission tube is arranged on the full pressure gathering tube; and a static pressure testing tube is arranged in the airflow channel. The measuring device for the wind speed and the wind volume combines two testing methods, namely an air channel surface test and a pitot tube static pressure testing hole test, employs the testing of the air channel static pressure on the air channel surface to replace the pitot tube static pressure, and reduces a pitot tube static pressure testing pipeline so as to reduce air channel throttling; and the box body is adopted to replace a part of the existing air channel, thereby overcoming the defect of lack of a straight tube for the installation of the wind speed measuring device in a large wind box structure.
Description
Technical field
The utility model relates to a kind of wind speed and wind measuring device based on static pressure principle.
Background technology
The burning adjustment of thermal power plant's coal dust boiler is mainly by regulating the little throttle opening of each Secondary Air to change the wind speed of overfire air port, but the straight section that connects air channel due to each overfire air port is shorter, air channel flow field is unstable, not good to the test condition of wind speed air quantity, test accuracy is poor, can not meet the demand that instructs operation to adjust.The burning adjustment becoming more meticulous is conducive to reduce boiler NO
xdischarge and prevent that boiler coke is very important strict today to environmental requirement.Measuring wind speed is the necessary condition that the burning that becomes more meticulous is adjusted accurately and reliably.
Differential pressure flowmeter is conventional wind speed measuring device, and existing differential pressure type flow apparatus is installed on field apparatus owing to can not find longer original paper place airflow direction of straight length test and measuring the problems such as original paper out of plumb, proving installation self resistance are large, cause testing inaccurate.
Summary of the invention
The purpose of this utility model is to provide a kind of each spout secondary wind wind speed measurement mechanism that is applied to dichotomous air channel structure or large bellows structure pulverized coal firing boiler.
The purpose of this utility model is achieved in that the wind speed and wind measuring device based on static pressure principle, the casing that comprises an open at both ends, one port is air inlet, another port is air outlet, in air inlet, be equiped with flow straightening grid, the box house space at flow straightening grid rear portion is gas channel, in gas channel, be evenly laid with pitot tube, pitot tube only has air inlet and total head port, the total head port of pitot tube is communicated with pitot tube total head gathering tube, pitot tube total head gathering tube is communicated with total head gathering tube, on total head gathering tube, be equiped with total head transfer tube, in gas channel, be also laid with static pressure test pipe.
Owing to carrying out technique scheme, the utility model adopts standard pitot tube as one-shot measurement original paper, and it is high that the other forms of measurement original papers such as pitot tube and bourdon's tube, wing, backing tube are compared measuring accuracy.This wind speed measuring device can be arranged on each Secondary Air airduct that adopts dichotomous air channel structure, with casing, replace a part of existing air channel, can be arranged on before each overfire air port air channel of the large bellows of pulverized coal firing boiler Secondary Air inside, effectively having solved large bellows structure does not have straight tube that the shortcoming of wind speed measuring device can be installed yet.In power industry standard < < For Air Fans of Utility Boilers field performance test > >, the test of static pressure is had to two kinds of methods, the first is at air channel surface test, and it two is the static pressure test hole tests that utilize pitot tube.The object of two kinds of method of testings is identical, and the application, by two kinds of method of testing combinations, utilizes at surface test air channel, air channel static pressure, replaces pitot tube static pressure, and its advantage is to reduce by a road pitot tube static pressure test pipeline, simple in structure, thereby reduces air channel throttling.
Accompanying drawing explanation: the technical solution of the utility model is provided by following drawings and Examples:
Fig. 1 is the square wind speed and wind measuring device structural representation based on static pressure principle;
Fig. 2 is the square wind speed and wind measuring device side-looking structural representation based on static pressure principle;
Fig. 3 is the circular wind speed and wind measuring device structural representation based on static pressure principle;
Fig. 4 is the circular wind speed and wind measuring device structural representation based on static pressure principle
Legend: 1. flow straightening grid, 2. pitot tube total head gathering tube, 3. pitot tube, 4. static pressure test pipe, 5. total head gathering tube, 6. total head transfer tube, 7. gas channel.
Embodiment:
The utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Embodiment: as shown in Fig. 1-4, the wind speed and wind measuring device based on static pressure principle comprises the casing of an open at both ends, a port is air inlet, and another port is air outlet, is equiped with flow straightening grid 1 in air inlet, and flow straightening grid 1 covers air inlet completely.The box house space at flow straightening grid 1 rear portion is gas channel 7, at the interior pitot tube 3 that is evenly laid with of gas channel 7, pitot tube 3 only has air inlet and total head port, the total head port of pitot tube 3 is communicated with pitot tube total head gathering tube 2, pitot tube total head gathering tube 2 is communicated with total head gathering tube 5, on total head gathering tube 5, be equiped with total head transfer tube 6, air-flow total head is delivered on differential pressure proving installation and is measured.In gas channel 7, be also laid with static pressure test pipe 4.Flow straightening grid 1 covers air inlet completely.
As shown in Figure 1, 2, every row's pitot tube 3 is connected with a pitot tube total head gathering tube 2, and each pitot tube total head gathering tube 2 is communicated with total head gathering tube 5, and total head gathering tube 5 is installed in outside casing.At the rear wall of casing and the inwall of left and right sides wall middle part, be laid with static pressure test pipe 4, casing is stretched out at static pressure test pipe 4 two ends.
As shown in Figure 3,4, casing is cylindrical shape, and total head gathering tube 5 is fixed on the circle centre position of gas channel 7 round sections, is positioned at casing, ring total head gathering tube 5 circumference equi-spaced apart are laid pitot tube total head gathering tube 2, evenly lay pitot tube 3 on every pitot tube total head gathering tube 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 first by flow straightening grid 1, be subject 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 gas channel 7, realize multimetering, when air-flow arrives pitot tube 3 after by flow straightening grid 1 rectification, airflow direction is parallel with the direction of pitot tube 3, and air-flow is sent on pressure difference transmitter and measured along pitot tube total head gathering tube 2, static pressure test pipe 4 respectively subsequently.
Above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease according to actual needs inessential technical characterictic, meets the needs of different situations.
Claims (5)
1. the wind speed and wind measuring device based on static pressure principle, the casing that comprises an open at both ends, one port is air inlet, another port is air outlet, it is characterized in that: in air inlet, be equiped with flow straightening grid, the box house space at flow straightening grid rear portion is gas channel, in gas channel, be evenly laid with pitot tube, pitot tube only has air inlet and total head port, the total head port of pitot tube is communicated with pitot tube total head gathering tube, pitot tube total head gathering tube is communicated with total head gathering tube, on total head gathering tube, be equiped with total head transfer tube, in gas channel, be also laid with static pressure test pipe.
2. the wind speed and wind measuring device based on static pressure principle as claimed in claim 1, is characterized in that: every row's pitot tube is connected with a pitot tube total head gathering tube, and each pitot tube total head gathering tube is communicated with total head gathering tube, and total head gathering tube is installed in outside casing.
3. the wind speed and wind measuring device based on static pressure principle as claimed in claim 1, is characterized in that: at the rear wall of casing and the inwall of left and right sides wall middle part, be laid with static pressure test pipe, casing is stretched out at static pressure test pipe two ends.
4. the wind speed and wind measuring device based on static pressure principle as claimed in claim 1, it is characterized in that: casing is cylindrical shape, total head gathering tube is fixed on the circle centre position of gas channel round section, be positioned at casing, ring total head gathering tube circumference equi-spaced apart is laid pitot tube total head gathering tube, evenly lays pitot tube on every pitot tube total head gathering tube.
5. the wind speed and wind measuring device based on static pressure principle as claimed in claim 1, is characterized in that: ring casing circumference is laid with two static pressure test pipes that are right-angled intersection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320355647.7U CN203535068U (en) | 2013-06-20 | 2013-06-20 | Measuring device for wind speed and wind volume based on static pressure principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320355647.7U CN203535068U (en) | 2013-06-20 | 2013-06-20 | Measuring device for wind speed and wind volume based on static pressure principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203535068U true CN203535068U (en) | 2014-04-09 |
Family
ID=50421262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320355647.7U Expired - Fee Related CN203535068U (en) | 2013-06-20 | 2013-06-20 | Measuring device for wind speed and wind volume based on static pressure principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203535068U (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 |
| CN106352930A (en) * | 2016-08-31 | 2017-01-25 | 神华集团有限责任公司 | Gas flow testing device and coal mill capacity air measuring instrument |
| CN106841672A (en) * | 2017-01-20 | 2017-06-13 | 北京博希格动力技术有限公司 | The apparatus and method of the small wing detection boiler secondary point duct velocity of array |
| CN113281532A (en) * | 2021-06-16 | 2021-08-20 | 中国船舶工业集团公司第七0八研究所 | Pitot tube convenient for angle adjustment in pipeline and flow velocity measuring method thereof |
-
2013
- 2013-06-20 CN CN201320355647.7U patent/CN203535068U/en not_active Expired - Fee Related
Cited By (6)
| 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 |
| CN106352930A (en) * | 2016-08-31 | 2017-01-25 | 神华集团有限责任公司 | Gas flow testing device and coal mill capacity air measuring instrument |
| CN106352930B (en) * | 2016-08-31 | 2024-01-26 | 国家能源投资集团有限责任公司 | Gas flow testing device and coal mill capacity wind measuring instrument |
| CN106841672A (en) * | 2017-01-20 | 2017-06-13 | 北京博希格动力技术有限公司 | The apparatus and method of the small wing detection boiler secondary point duct velocity of array |
| CN106841672B (en) * | 2017-01-20 | 2023-12-29 | 北京博希格动力技术有限公司 | Array winglet detection boiler secondary device and method for dividing wind speed of wind channel |
| CN113281532A (en) * | 2021-06-16 | 2021-08-20 | 中国船舶工业集团公司第七0八研究所 | Pitot tube convenient for angle adjustment in pipeline and flow velocity measuring method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201555612U (en) | Self-deashing rectifier type cross section air quantity and air speed measuring device | |
| CN206583495U (en) | A kind of built-in rectifier for Ultrasonic Wave Flowmeter | |
| CN203535068U (en) | Measuring device for wind speed and wind volume based on static pressure principle | |
| CN104457863A (en) | Method and wire pipe air speed flow meter for measuring air speeds on wire feeding pipelines | |
| CN113607227A (en) | Non-uniform flow field gas flow measurement method and system | |
| CN103336141A (en) | Wind speed and wind volume measuring device based on static pressure principle | |
| CN202631014U (en) | Three-curve-airfoil rectifying type air flow device | |
| CN201434698Y (en) | Reducing measuring tube flowmeter | |
| CN202869562U (en) | Machining-type Venturi tube | |
| CN203535067U (en) | Measuring device for wind speed and wind volume | |
| CN204594509U (en) | Differential pressure type apparatus for measuring air quantity | |
| CN204944561U (en) | A kind of low pressure loss surpasses accelerometer measuring device | |
| CN104101387B (en) | The adaptive flute type manage-style flowmeter of adjustable type | |
| CN204115782U (en) | Oil recovery winding pipe flow rate metering device | |
| CN211401315U (en) | Differential pressure flow sensor for backrest pipe | |
| CN203116778U (en) | Adjustable self-adapting flute-type pipe air quantity measurement meter | |
| CN204142475U (en) | A kind of flame arrester for petroleum tank pressure loss and throughput pick-up unit | |
| CN102495232A (en) | Portable air speed measuring apparatus of pipeline | |
| CN212082473U (en) | Matrix flowmeter | |
| CN214502553U (en) | Orifice flowmeter | |
| CN103336142A (en) | Measuring device for wind speed and wind volume | |
| CN204313893U (en) | Fiber tube wind speed flowmeter | |
| CN107806913A (en) | Gas pipeline plurality of nozzle-type flow measuring probe | |
| CN201795815U (en) | Anti-blocking type low-speed pipe flow meter | |
| CN104568027A (en) | Pitotbar gas flow measuring device |
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 |
Granted publication date: 20140409 Termination date: 20180620 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |