CN103743440A - Combined linear flow velocity and temperature field measurement gun for flue gas in flue - Google Patents
Combined linear flow velocity and temperature field measurement gun for flue gas in flue Download PDFInfo
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- CN103743440A CN103743440A CN201410015539.4A CN201410015539A CN103743440A CN 103743440 A CN103743440 A CN 103743440A CN 201410015539 A CN201410015539 A CN 201410015539A CN 103743440 A CN103743440 A CN 103743440A
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Abstract
The invention relates to a combined linear flow velocity and temperature field measurement gun for flue gas in a flue. The measurement gun is mainly used for synchronously measuring the flow velocity and the temperature of the flue gas at each point in the flue according to different flue sectional areas, and belongs to an environment monitor. The measurement gun is formed by combining more than four pairs of S-shaped pitot tubes and temperature sensors, wherein a distance between measurement holes of measurement heads of every two adjacent S-shaped pitot tubes is 200mm; the part, which is 100mm away from the corresponding measurement head, of each S-shaped pitot tube is bent by a bending angle of 5 to 10 degrees; after the pitot tubes are bent, the centerlines of the measurement heads are parallel to the centerlines of tube bodies of the pitot tubes, and are at perpendicular distances of more than 15mm away from the centerlines of the tube bodies of the pitot tubes; the temperature sensors of which the lengths are the same as those of the S-shaped pitot tubes are arranged on the S-shaped pitot tubes. The measurement gun is simple in structure and convenient to operate; the problems, which cannot be solved by a conventional measurement gun, of synchronous measurement of linear flow velocity and temperature of the flue gas in the flue are solved, and the flow velocity and the temperature of the flue gas at multiple points in a pollution source-fixed flue are simultaneously and synchronously measured at an equal interval on the same section.
Description
Technical field
The present invention relates to stationary pollution source flue gas in flue linear flow speed and flue-gas temperature pick-up unit, relate generally to flue gas linear flow speed and flue-gas temperature field measurement rifle in a kind of combined flue, belong to environment supervision instrument class.
Background technology
?the mensuration of stationary pollution source flue gas in flue flow velocity adopts S type pitot tube single-point and mobile metering system conventionally at present, and two gauge heads on S type pitot tube have both direction Rather, openings, and two opening sections are parallel to each other.During measurement, just the opening of airflow direction is measured to total head, the opening of airflow direction is measured static pressure dorsad.Due to pitot tube reasons in structure, the velocity flow profile of flue gas in flue is dynamic change, is subject to the factor such as trend of reducing, flue internal support column and the flue of production status, flue roughness, flue to cause flue gas flow rate skewness in flue.Therefore measure on section certain any flow velocity, can not reflect section each point velocity flow profile feature.And the pitot tube of existing measurement rifle can only be measured certain some flow velocity on section.
< < ISO 10780-1994 > >, < < ISO 9096-2003 > >, < < EN 13284-1-2001 > >, in < < ASTMD 3154-2006 > > and < < GB/T 16157-1996 > > standard all adopt wait encircle area-method.Its method is that flue is divided into the some above part that area equates, then adopts measurement rifle to measure the flue gas point flow velocity of every part, represents the flue gas flow rate of flue with the mean flow rate of each point flow velocity.But the flow velocity of flue gas in flue is mainly subject to the impact of operating mode, and etc. ring area-method adopt Multipoint movable test, can not measure the flow velocity of each point on same section simultaneously.Therefore the ring area-method such as employing is difficult to guarantee accuracy and the reliability of the flow speed data of measuring.And etc. ring area-method at rectangular flue area at 4.0-9.0/m
2, measuring point sum needs 9-16/, and circular flue diameter 3-5m need to be divided into 5 rings, 10 measuring points, the cycle is long, and workload is large.
Summary of the invention
For the problem of above-mentioned existence, the present invention proposes flue gas linear flow speed and flue-gas temperature field measurement rifle in a kind of combined flue.
To achieve these goals, technical solution of the present invention is: flue gas linear flow speed and flue-gas temperature field measurement rifle in a kind of combined flue, comprise and measure in rifle S type pitot tube and be connected S type pitot tube static tube, the sensor connector of ram-air pipe and be arranged on the temperature sensor on S type pitot tube, described measurement rifle is combined by more than four pairs S type pitot tube, four pairs of above S type pitot tubes are parallel to each other, spacing between the measured hole of every S type pitot tube measuring head is 200mm, every S type pitot tube is being bending apart from measuring head 100mm place, angle of bend is 5 °-10 °, after bending, the center line of measuring head center line and pitot tube body is parallel to each other, and vertical range is more than 15mm, on every S type pitot tube, be provided with the temperature sensor identical with its length.
Between described more than four S type pitot tube and flue-gas temperature sensor, be arranged in parallel or be arranged under the overlay.
Between the S type pitot tube of described arrangement, be provided with stiffener.
Owing to having adopted above technical scheme, measurement rifle of the present invention is arranged in parallel four pairs of above S pitot tube and temperature sensors or be arranged under the overlay combination, on sampling gun, have additional stiffener, guarantee to measure the intensity of rifle, reduce sampling gun and apart from measuring head 100mm place, be bending at every S type pitot tube of the yielding impact of flue internal cause flue gas flow rate great Rong, angle of bend is 5 °-10 °, has reduced the turbulent flow of pitot tube opening part.After bending, the center line of measuring head center line and pitot tube body is parallel to each other, and vertical range is more than 15mm, has guaranteed that sampling gun normally enters in flue thieff hatch to measure.The V-type of utilizing static tube two pipes parallel with ram-air pipe of pitot tube to form, embeds temperature sensor, by data processing, has guaranteed the reliability of flue gas flow rate and smoke temperature measurement data.
Measurement rifle of the present invention can be measured flue gas flow rate and temperature field on synchronous same section in flue simultaneously, solved the problem that routine sampling rifle cann't be solved, the authenticity of the measurement data of same same time of section that guaranteed flue gas flow rate and flue-gas temperature in measuring process.
Measurement rifle of the present invention province simple in structure, easy to operate, laborsaving thing, has improved flue gas flow rate and smoke temperature measurement efficiency, and the accuracy of monitoring result and reliability.Flue gas flow rate and flue-gas temperature equidistant while, synchronous multi-point sampling on same section of institute's monitoring flue have been realized.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in drawings,
Flue gas linear flow speed and flue-gas temperature field measurement rifle in a kind of combined flue, comprise measure in rifle S type pitot tube 2 and be connected S type pitot tube 2 in static tube, the sensor connector of ram-air pipe and be arranged on the temperature sensor 4 on S type pitot tube 2, described measurement rifle is combined by more than four pairs S type pitot tube 2, four pairs of above S type pitot tubes 2 are parallel to each other, spacing between the measured hole 1 of every S type pitot tube 2 measuring heads is 200mm, every S type pitot tube 2 is being bending apart from measuring head 100mm place, angle of bend is 5 °-10 °, after bending, the center line of measuring head center line and pitot tube body is parallel to each other, and vertical range is more than 15mm, on every S type pitot tube 2, be provided with the temperature sensor identical with its length 4.The sensor connector of static tube, ram-air pipe and the external surveying instrument of joint of temperature sensor 4 in every S type pitot tube 2.
Between described more than four S type pitot tube and temperature sensor 2, be arranged in parallel or be arranged under the overlay.
Between the S type pitot tube 2 of described arrangement, be provided with stiffener 3, at its outer setting overcoat.Adopt operation valve control each point measurement, not only can spot measurement but also can multimetering.
Claims (3)
1. flue gas linear flow speed and flue-gas temperature field measurement rifle in a combined flue, comprise and measure in rifle S type pitot tube (2) and be connected S type pitot tube (2) static tube, the sensor connector of ram-air pipe and be arranged on the temperature sensor (4) on S type pitot tube (2), it is characterized in that: described measurement rifle is combined by more than four pairs S type pitot tube (2), four pairs of above S type pitot tubes (2) are parallel to each other, spacing between the measured hole (1) of every S type pitot tube (2) measuring head is 200mm, every S type pitot tube (2) is being bending apart from measuring head 100mm place, angle of bend is 5 °-10 °, after bending, the center line of measuring head center line and pitot tube body is parallel to each other, and vertical range is more than 15mm, on every S type pitot tube (2), be provided with the temperature sensor identical with its length (4).
2. flue gas linear flow speed and smoke temperature measurement rifle in combined flue as claimed in claim 1, is characterized in that: between described more than four S type pitot tube and flue-gas temperature sensor (2), be arranged in parallel or be arranged under the overlay.
3. flue gas linear flow speed and smoke temperature measurement rifle in combined flue as claimed in claim 1, is characterized in that: between the S type pitot tube (2) of described arrangement, be provided with stiffener (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410015539.4A CN103743440A (en) | 2014-01-14 | 2014-01-14 | Combined linear flow velocity and temperature field measurement gun for flue gas in flue |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410015539.4A CN103743440A (en) | 2014-01-14 | 2014-01-14 | Combined linear flow velocity and temperature field measurement gun for flue gas in flue |
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| CN103743440A true CN103743440A (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410015539.4A Pending CN103743440A (en) | 2014-01-14 | 2014-01-14 | Combined linear flow velocity and temperature field measurement gun for flue gas in flue |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840284A (en) * | 2016-12-22 | 2017-06-13 | 汇众翔环保科技河北有限公司 | Based on multitube Pitot tube matrix form flow system and measuring method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0298012A1 (en) * | 1987-06-29 | 1989-01-04 | United Technologies Corporation | Temperature and pressure probe |
| JPH10132841A (en) * | 1996-10-28 | 1998-05-22 | Central Res Inst Of Electric Power Ind | Simultaneous measuring sensor for instantaneous velocity of flow and temperature |
| CN201757719U (en) * | 2010-06-10 | 2011-03-09 | 青岛崂山电子仪器总厂有限公司 | Multifunctional dust and smoke combined sampling gun |
| CN102103044A (en) * | 2011-01-20 | 2011-06-22 | 马鞍山钢铁股份有限公司 | Isokinetic smoke dust sampling device and sampling method |
| CN103353538A (en) * | 2013-07-18 | 2013-10-16 | 广东电网公司电力科学研究院 | Pitot tube apparatus for multiple-detection-point flue gas flow velocity measuring |
| CN103364580A (en) * | 2013-07-18 | 2013-10-23 | 广东电网公司电力科学研究院 | System and method for multi-point grid on-line flow velocity measurement |
| CN203704976U (en) * | 2014-01-14 | 2014-07-09 | 湖北省环境监测中心站 | Measurement gun for measuring smoke linear flow velocity and smoke temperature field in combined smoke channel |
-
2014
- 2014-01-14 CN CN201410015539.4A patent/CN103743440A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0298012A1 (en) * | 1987-06-29 | 1989-01-04 | United Technologies Corporation | Temperature and pressure probe |
| JPH10132841A (en) * | 1996-10-28 | 1998-05-22 | Central Res Inst Of Electric Power Ind | Simultaneous measuring sensor for instantaneous velocity of flow and temperature |
| CN201757719U (en) * | 2010-06-10 | 2011-03-09 | 青岛崂山电子仪器总厂有限公司 | Multifunctional dust and smoke combined sampling gun |
| CN102103044A (en) * | 2011-01-20 | 2011-06-22 | 马鞍山钢铁股份有限公司 | Isokinetic smoke dust sampling device and sampling method |
| CN103353538A (en) * | 2013-07-18 | 2013-10-16 | 广东电网公司电力科学研究院 | Pitot tube apparatus for multiple-detection-point flue gas flow velocity measuring |
| CN103364580A (en) * | 2013-07-18 | 2013-10-23 | 广东电网公司电力科学研究院 | System and method for multi-point grid on-line flow velocity measurement |
| CN203704976U (en) * | 2014-01-14 | 2014-07-09 | 湖北省环境监测中心站 | Measurement gun for measuring smoke linear flow velocity and smoke temperature field in combined smoke channel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840284A (en) * | 2016-12-22 | 2017-06-13 | 汇众翔环保科技河北有限公司 | Based on multitube Pitot tube matrix form flow system and measuring method |
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Application publication date: 20140423 |