CN103513053A - Device for synchronously adjusting direction of pitot tube sampling hole and sampling gun in rotating mode - Google Patents
Device for synchronously adjusting direction of pitot tube sampling hole and sampling gun in rotating mode Download PDFInfo
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- CN103513053A CN103513053A CN201210222278.4A CN201210222278A CN103513053A CN 103513053 A CN103513053 A CN 103513053A CN 201210222278 A CN201210222278 A CN 201210222278A CN 103513053 A CN103513053 A CN 103513053A
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Abstract
The invention provides a device for synchronously adjusting the direction of a pitot tube sampling hole and a sampling gun in a rotating mode. The direction of the pitot tube sampling hole and the sampling gun can be adjusted according to the direction of flue airflow, and the relative positions of a sampling gun pipe and a pitot tube are fixed. The device comprises the sampling gun pipe, the pitot tube, an inner barrel and an outer barrel. The outer barrel is arranged on a sampling support platform, and the sampling gun pipe and the pitot tube are fixedly arranged on the inner barrel of the device. Flanges of the inner barrel and the outer barrel are provided with angle scales and arc mounting through holes, so that the radial included angle between the inner barrel and the outer barrel can be changed according to requirements through rotation of the inner barrel, the pitot tube sampling hole and the sampling gun are adjusted in direction to right face the direction of the flue airflow, and after setting is finished, screws are used for fixing. The device has the advantages that the pitot tube sampling hole and the sampling gun are kept to parallel, the relative positions of the pitot tube sampling hole and the sampling gun are fixed, errors due to the fact that the directions of the pitot tube sampling hole and the sampling gun are not consistent in the sampling process can be effectively avoided, and the device is simple in structure, strong in adaptability, and suitable for site quick adjustment.
Description
Technical field
The invention belongs to Analysis on Environment Contamination and monitoring field, relate generally to the sampling analysis of target contaminant in flue, the particularly continuous sampling analysis of dioxin and monitor a kind of sampling apparatus used in flue gas and Dust, specifically flue gas sampling analyze in synchronous rotary regulate pitot tube gaging hole and sampling muzzle towards device.
Background technology
Dioxin is a class hypertoxicity organic contaminant, is mainly derived from present industrial furnace discharge such as burning, danger wastes burning, thermal power plant of municipal refuse etc.In order to control and to reduce air pollution emission, need to these stationary pollution sources be sampled and be monitored.
In the environmental monitoring of the stationary pollution source discharging waste gas such as flue, chimney and aiutage, the sampling of particle and gaseous contaminant and monitoring, mainly contain the on-line monitoring of hand sampling, portable instrument monitoring, flue gas dirt etc.And in these sampling monitorings; in order accurately to trap flue gas and Dust; U.S. EPA 23 methods, the EN1948 of European Union, China national environmental standard GB/T16157-1996 and China environmental protection industry standard HJ/T394-2007 etc. all require isokinetic sampling, therefore require the velocity survey of fluid accurate.Often adopt at present standard pitot tube and S type pitot tube to measure the speed of chimney or pipeline inner fluid both at home and abroad.Because the gaging hole of standard pitot tube is very little, when flue endoparticle substrate concentration is large, easily blocked, be generally applicable to measure more clean exhaust.S type pitot tube is composed in parallel by two identical metal tubes, and measuring junction has two openings of opposite direction, and the pressure that during measurement, the opening of object gas flow records is total head, and the pressure that the opening of air-flow records is dorsad less than static pressure.Its pressure tap opening is larger, and be difficult for being stopped up by particle, and be convenient to use in heavy wall flue, thereby in aspect widespread uses such as continuous monitorings.Yet, during actual use, due to factor impacts such as manufacture craft and practical operation conditions, can not accurately guarantee that pitot tube opening direction is identical with airflow direction, and the drift angle forming on the correction factor impact of pitot tube significantly, therefore cause the measuring error of flue gas stream flow velocity.In addition, general pitot tube and the position relationship of sampling gun are fixed, and be only suitable on vertical flue or chimney, sampling or monitoring, yet in fact, flue are multiple angles greatly, does not meet the platform of sampling request.In order to realize multiple angles sampling and monitoring, sampling and monitorings such as under the operating modes such as horizontal flue, 45 degree flues, need to regulate sampling gun and pitot tube, make they towards consistent with flue gas stream direction.
Summary of the invention
The object of this invention is to provide a kind of for flue gas analysis sampling, have the synchronous adjustment pitot tube gaging hole of simple in structure, easy to operate feature and sampling muzzle towards device.
Pitot tube gaging hole and sampling muzzle, towards the adjustable device of synchronous rotary, comprise pitot tube, sampling gun barrel, outer cylinder body, inner barrel;
Outside, sampling gun barrel middle part coaxial sleeve is provided with inner barrel cylindraceous, on the outer wall of the sampling gun barrel wrapping up in inner barrel, is wound with heating tape, between inner barrel and sampling gun barrel, is provided with thermocouple sensor;
Sampling gun barrel is fixedly connected with inner barrel; In the outside of inner barrel, coaxial sleeve is provided with outer cylinder body, between outer cylinder body and inner barrel, is rotatably connected; Pitot tube is fixed on the outside of inner barrel;
The total head gaging hole place plane of pitot tube arranges with the sampling muzzle place plane parallel of sampling gun barrel;
The residing plane of geometric center of the total head gaging hole of pitot tube, static opening, sampling muzzle and the axis of inner barrel are perpendicular;
Pitot tube static tube end is connected or is connected with two barometrical interfaces respectively with two interfaces of differential pressure pickup through flexible pipe with ram-air pipe end.
In between outer cylinder body and inner barrel, be provided with bearing, outer cylinder body and inner barrel can relatively rotate connection by bearing.
Two ends in inner barrel are radially equipped with ring flange, offer circular arc through hole is installed outside one end ring flange away from sampling muzzle on end face, placed and be with externally threaded forcing screw in through hole;
One end away from sampling muzzle in outer cylinder body is radially provided with ring flange, is provided with tapped screw hole on ring flange;
Forcing screw is screwed together in screw hole, for the fixing relative position of inner barrel and outer cylinder body;
In be provided with accordingly angle index line on end face outside the sampling inner barrel of muzzle and the ring flange of outer cylinder body.
The plane parallel at the plane at sampling gun tube hub axis place and pitot tube central axis place is fixed on inner barrel, initial manufacturing accuracy guaranteed sampling muzzle with pitot tube total head gaging hole towards consistent;
Outer cylinder body is arranged on sampling support platform;
During application, can according to flue gas stream direction rotation regulate sampling muzzle and pitot tube total head gaging hole towards, make it parallel with flue gas stream direction, after adjustment, be screwed.
The invention provides the synchronous circumference of a kind of simple in structure, easy to operate sampling gun and pitot tube and adjust the device of direction, it is fixing that pitot tube and sampling gun relative position keep, and pitot tube gaging hole and sampling muzzle direction consistance are guaranteed by initial manufacturing accuracy; Can also be according to sampling and monitoring actual condition, regulate sampling muzzle and pitot tube gaging hole towards making it consistent with flue gas stream direction, realize different angles flue sampled and monitored.Apparatus structure is simple, is applicable to on-the-spot rapid adjustment, and versatility is very strong.
Major advantage of the present invention is: 1. pitot tube gaging hole and sampling muzzle keeping parallelism, and relative position is fixed, and effectively avoids the inconsistent error causing of direction in sampling process; 2. this apparatus structure is simple, and applicability is strong, is applicable to on-the-spot rapid adjustment.
Accompanying drawing explanation
Fig. 1 is a kind of pitot tube gaging hole and sampling muzzle rotatable sampling apparatus in the same way of keeping of the present invention.Wherein 1 is S type pitot tube; 2 is sampling gun barrel; 3 is outer cylinder body; 4 is that inner barrel and 5 is bearing.
Fig. 2 is the left view of device of the present invention, and machining precision and installation accuracy are guaranteed pitot tube 1 and the central axis place plane of the gun barrel 2 of sampling is parallel to each other (being pitot tube total head gaging hole 12 place planes and sampling muzzle 21 place plane parallel)
Fig. 3 is the right view of device of the present invention, and gun barrel 2 ends of wherein sampling adopt spherical structure 22 to be connected with flue dust and flue gas absorbing device; Pitot tube 1 static tube end 13 is connected with differential pressure pickup interface with flexible pipe respectively with ram-air pipe end 14.
Embodiment
Following examples are for a more detailed description for the present invention, are only the descriptions to preferred forms of the present invention, but scope of the present invention do not had to any restriction.
Flue gas sampling analyze in synchronous rotary regulate pitot tube gaging hole and sampling muzzle towards a device, can according to flue gas stream direction rotation regulate sampling gun barrel and pitot tube towards and remain that sampling gun barrel is relative with pitot tube position fixing.
As shown in Figure 1, this device comprises pitot tube 1, sampling gun barrel 2, outer cylinder body 3, inner barrel 4 and bearing 5 to its chief component.Wherein, pitot tube 1 can be S type pitot tube, standard pitot tube or other structure pitot tubes, and pitot tube 1 total head gaging hole 12 levels are fixed on inner barrel 4; Pitot tube static tube end 13 connects flexible pipe with ram-air pipe end 14 and is connected with differential pressure pickup or barometer; Sampling gun barrel 2 can be that the materials such as titanium alloy, stainless steel or quartz glass are made, sampling gun straight-tube portion and inner barrel are coaxially fixed on inner barrel 4, Fig. 2 installs left view for this reason, and machining precision and assembly precision are guaranteed pitot tube 1 be parallel to each other with the central axis place plane of sampling gun barrel 2 (being that pitot tube total head gaging hole 12 is parallel with the muzzle 21 of sampling).Fig. 3 installs right view for this reason, and the end of sampling gun barrel 2 adopts spherical structure 22 to be connected with flue dust and flue gas absorbing device, and when the rotation of sampling muzzle regulates, absorption plant needn't rotate thereupon, keep sealing reliability and operation simplification.
Control method when embodiment 1. horizontal flue samplings and monitoring
Step:
(1) unclamp forcing screw 6, rotation inner barrel 3 makes the angle index line on flange aim at the scale angle line 90Du position on outer cylinder body 4 flanges, fixed screw 6;
(2) open flue thieff hatch, the sampling muzzle of device of the present invention is put into the sampled point of standard code, start to carry out sampling operation.
Claims (6)
1. pitot tube gaging hole and sampling muzzle, towards the adjustable device of synchronous rotary, is characterized in that:
Comprise pitot tube (1), sampling gun barrel (2), outer cylinder body (3), inner barrel (4);
Outside, sampling gun barrel middle part coaxial sleeve is provided with inner barrel cylindraceous, on the outer wall of the sampling gun barrel wrapping up in inner barrel, is wound with heating tape, between inner barrel and sampling gun barrel, is provided with thermocouple sensor;
Sampling gun barrel is fixedly connected with inner barrel; In the outside of inner barrel, coaxial sleeve is provided with outer cylinder body, between outer cylinder body and inner barrel, is rotatably connected; Pitot tube is fixed on the outside of inner barrel;
Total head gaging hole (12) the place plane of pitot tube arranges with sampling muzzle (21) the place plane parallel of sampling gun barrel;
The total head gaging hole of pitot tube, static opening (11), the sampling residing plane of geometric center of muzzle and the axis of inner barrel are perpendicular;
Pitot tube static tube end (13) is connected or is connected with two barometrical interfaces respectively with two interfaces of differential pressure pickup through flexible pipe with ram-air pipe end (14).
2. device as claimed in claim 1, is characterized in that:
In outer cylinder body 3 and 4 of inner barrels, be provided with bearing 5, outer cylinder body 3 and inner barrel 4 can relatively rotate connection by bearing 5.
3. device as claimed in claim 1 or 2, is characterized in that:
Two ends in inner barrel 4 are radially equipped with ring flange, offer circular arc through hole 44 is installed on end face outside the ring flange of sampling muzzle 21 one end, placed and be with externally threaded forcing screw 6 in through hole 44;
In outer cylinder body 3 away from sampling muzzle 21 one end be radially provided with ring flange, on ring flange, be provided with tapped screw hole;
Forcing screw 6 is screwed together in screw hole, for the fixing relative position of inner barrel 4 and outer cylinder body 3.
4. device as claimed in claim 3, is characterized in that:
In be provided with accordingly angle index line on end face outside the sampling inner barrel 4 of muzzle 21 and the ring flange of outer cylinder body 3.
5. device as claimed in claim 1, is characterized in that:
The plane parallel at the plane at sampling gun tube hub axis place and pitot tube central axis place is fixed on inner barrel, initial manufacturing accuracy guaranteed sampling muzzle with pitot tube total head gaging hole towards consistent.
6. device as claimed in claim 1, is characterized in that:
Outer cylinder body is arranged on sampling support platform;
During application, can according to flue gas stream direction rotation regulate sampling muzzle and pitot tube total head gaging hole towards, make pitot tube total head gaging hole and sampling muzzle over against flue gas stream direction, after adjustment, be screwed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210222278.4A CN103513053A (en) | 2012-06-29 | 2012-06-29 | Device for synchronously adjusting direction of pitot tube sampling hole and sampling gun in rotating mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210222278.4A CN103513053A (en) | 2012-06-29 | 2012-06-29 | Device for synchronously adjusting direction of pitot tube sampling hole and sampling gun in rotating mode |
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| CN103513053A true CN103513053A (en) | 2014-01-15 |
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| CN201210222278.4A Pending CN103513053A (en) | 2012-06-29 | 2012-06-29 | Device for synchronously adjusting direction of pitot tube sampling hole and sampling gun in rotating mode |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122120A (en) * | 2014-07-31 | 2014-10-29 | 中国环境科学研究院 | Adjustable isokinetic particulate matter sampling device |
| CN107037234A (en) * | 2016-01-29 | 2017-08-11 | 古德里奇航天服务私人有限公司 | Hybrid material pitot tube |
| CN107238366A (en) * | 2017-05-26 | 2017-10-10 | 成都凯天电子股份有限公司 | Weather vane type angle of attack airspeed sensor protection device |
| CN107525622A (en) * | 2017-09-19 | 2017-12-29 | 中国水利水电科学研究院 | L-type Pitot tube stationary positioned device |
| CN107727456A (en) * | 2017-11-08 | 2018-02-23 | 上海北分科技股份有限公司 | A kind of novel flange |
| CN108287069A (en) * | 2018-03-19 | 2018-07-17 | 华电电力科学研究院有限公司 | One kind surveying the fixed attachment device of mouth and connection method for backing tube and experiment |
| CN108318090A (en) * | 2018-01-22 | 2018-07-24 | 重庆市环境科学研究院 | Flowmeter suitable for large diameter pipeline flow measurement |
| CN109540612A (en) * | 2019-01-28 | 2019-03-29 | 河北工业大学 | A kind of multichannel constant speed flue gas sampler |
| WO2019174351A1 (en) * | 2018-03-13 | 2019-09-19 | 山东科技大学 | Carbon dioxide measuring device for aeration zone |
| CN110308022A (en) * | 2019-08-02 | 2019-10-08 | 中国原子能科学研究院 | Oxygen analyzer water conservancy diversion probe assembly |
| CN111693727A (en) * | 2020-06-18 | 2020-09-22 | 蔡舒晨 | Water conservancy informatization detection device |
| 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 |
| CN114383987A (en) * | 2022-03-25 | 2022-04-22 | 江苏德尔瑞环保机械有限公司 | Device for detecting discharge pressure and concentration after boiler incineration flue gas purification treatment |
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| CN2401891Y (en) * | 1999-11-30 | 2000-10-18 | 深圳市北南环保技术有限公司 | Cooking fume, smoke dust sampler |
| CN2656983Y (en) * | 2003-11-21 | 2004-11-17 | 中国石油天然气股份有限公司 | Solid dust sampler for pipeline |
| CN101464232A (en) * | 2007-12-19 | 2009-06-24 | 王丕征 | Semi-volatile organic matter sampling technique in exhaust emission pipe |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122120A (en) * | 2014-07-31 | 2014-10-29 | 中国环境科学研究院 | Adjustable isokinetic particulate matter sampling device |
| CN104122120B (en) * | 2014-07-31 | 2016-08-24 | 中国环境科学研究院 | Adjustable particulate matter isokinetic sampling's device |
| CN107037234A (en) * | 2016-01-29 | 2017-08-11 | 古德里奇航天服务私人有限公司 | Hybrid material pitot tube |
| CN107037234B (en) * | 2016-01-29 | 2021-02-09 | 古德里奇航天服务私人有限公司 | Pitot tube made of hybrid material |
| CN107238366A (en) * | 2017-05-26 | 2017-10-10 | 成都凯天电子股份有限公司 | Weather vane type angle of attack airspeed sensor protection device |
| CN107238366B (en) * | 2017-05-26 | 2023-02-28 | 成都凯天电子股份有限公司 | Wind vane type angle of attack airspeed sensor protection device |
| CN107525622A (en) * | 2017-09-19 | 2017-12-29 | 中国水利水电科学研究院 | L-type Pitot tube stationary positioned device |
| CN107727456A (en) * | 2017-11-08 | 2018-02-23 | 上海北分科技股份有限公司 | A kind of novel flange |
| CN108318090B (en) * | 2018-01-22 | 2023-11-07 | 重庆市生态环境科学研究院 | Flowmeter suitable for large-caliber pipeline flow measurement |
| CN108318090A (en) * | 2018-01-22 | 2018-07-24 | 重庆市环境科学研究院 | Flowmeter suitable for large diameter pipeline flow measurement |
| WO2019174351A1 (en) * | 2018-03-13 | 2019-09-19 | 山东科技大学 | Carbon dioxide measuring device for aeration zone |
| CN108287069A (en) * | 2018-03-19 | 2018-07-17 | 华电电力科学研究院有限公司 | One kind surveying the fixed attachment device of mouth and connection method for backing tube and experiment |
| CN108287069B (en) * | 2018-03-19 | 2023-06-20 | 华电电力科学研究院有限公司 | Connecting device and connecting method for fixing backrest tube and test port |
| CN109540612B (en) * | 2019-01-28 | 2024-03-29 | 河北工业大学 | Multichannel constant-speed flue gas sampling device |
| CN109540612A (en) * | 2019-01-28 | 2019-03-29 | 河北工业大学 | A kind of multichannel constant speed flue gas sampler |
| CN110308022A (en) * | 2019-08-02 | 2019-10-08 | 中国原子能科学研究院 | Oxygen analyzer water conservancy diversion probe assembly |
| CN110308022B (en) * | 2019-08-02 | 2021-08-20 | 中国原子能科学研究院 | Flow guiding probe assembly of oxygen analyzer |
| CN111693727B (en) * | 2020-06-18 | 2022-03-29 | 蔡舒晨 | Water conservancy informatization detection device |
| CN111693727A (en) * | 2020-06-18 | 2020-09-22 | 蔡舒晨 | Water conservancy informatization detection device |
| 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 |
| CN114383987A (en) * | 2022-03-25 | 2022-04-22 | 江苏德尔瑞环保机械有限公司 | Device for detecting discharge pressure and concentration after boiler incineration flue gas purification treatment |
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Application publication date: 20140115 |