CN2725882Y - Portable duct gas contstant temp. diluting sampling analyzer - Google Patents
Portable duct gas contstant temp. diluting sampling analyzer Download PDFInfo
- Publication number
- CN2725882Y CN2725882Y CN 200420088973 CN200420088973U CN2725882Y CN 2725882 Y CN2725882 Y CN 2725882Y CN 200420088973 CN200420088973 CN 200420088973 CN 200420088973 U CN200420088973 U CN 200420088973U CN 2725882 Y CN2725882 Y CN 2725882Y
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Abstract
本实用新型是一种便携式烟道气恒温稀释采样分析器，包括将采样器与烟道口法兰盘连接的连接架，烟道稀释管道和停留室。连接架包括前夹板，后夹板，位于前、后夹板之间的U形卡和连接上述三者的螺栓，后夹板上设置有限位顶丝，前夹板上设置有与限位顶丝相对应的螺母；烟道稀释管道为直管，具有三个喷嘴的喷头和主管道。主管道的另一端连接有90度弯头，弯头内设置有收流口，其端部连接有四个采样口，各采样口通过管路分别与一个停留室连接。该分析器固定牢靠，不会因为稀释管道的移动造成采样管的水平和竖直位置发生改变使采样不准确；由于收流口的设计和增加了保温层温控设备、提高了采样精度并由于停留室的小型化，适合各种条件的烟道采样工作。
The utility model is a portable flue gas constant-temperature dilution sampling analyzer, which comprises a connecting frame for connecting the sampler with a flange plate of a flue mouth, a flue dilution pipe and a dwelling chamber. The connecting frame includes a front splint, a rear splint, a U-shaped clip between the front and rear splints, and bolts connecting the three. The rear splint is provided with a limit jack screw, and the front splint is provided with a stop screw corresponding to the limit jack. Nut; flue dilution pipe is straight pipe with three nozzle nozzles and main pipe. The other end of the main pipeline is connected with a 90-degree elbow, and a convection port is arranged in the elbow, and four sampling ports are connected at the end, and each sampling port is connected with a residence chamber through a pipeline. The analyzer is fixed firmly, and the horizontal and vertical positions of the sampling pipe will not be changed due to the movement of the dilution pipe, which will make the sampling inaccurate; due to the design of the collection port and the addition of thermal insulation layer temperature control equipment, the sampling accuracy is improved and due to The miniaturization of the dwelling chamber is suitable for flue sampling work under various conditions.
Description
Technical field
The utility model relates to flue sampling analysis device, specifically, relates to a kind of portable flue gas constant temperature dilution sampling analyzer.
Background technology
General chimney is all reserved the ring flange mouth of and chimney inner straight when design, be used for regular detection, the sampling of chimney, because not fixedly requirement of this ring flange mouth, so different chimneys just has different ring flange mouths, this give the stationary source sampling system sampling pipe fixedly bring very big difficulty.The mode that the tradition dilution tunnel adopts four pin to support when this problem of processing, this fixed form is just played a supporting role to sampling pipe, to such an extent as to the sampling pipe dilution tunnel can not be fixed.
Because the traditional design of fixed source diluting passage often is designed to U type pipe and following U type cast, and sampling and chamber be one, so volume is bigger, and sampling pipe is connected difficult with flue; For the fixed dilution channel body also will design the shelf that is fit to passage, its volume and weight is all bigger.
Traditional flue gas dilution sampling analyzer is not owing to have temperature controlling instruments, collected specimens not to have horizontal comparability, the sampling poor repeatability; Sampling pipe can not correctly be fixed, and often causes the sampling pipe displacement, and sampling precision is descended; Volume is not easy to transportation greatly, is not suitable for field sampling; The tradition chamber can only be gathered and be stopped the back sample, and a plurality of sampling head places same chamber, and the volume of chamber is bigger, is not easy to transportation and field sampling.
Do not have the accurate temperature controlling process in the whole process of sampling, the stationary source pollutant exists with aerocolloidal form in discharge process, and temperature is formed with very big influence to aerocolloidal; When the setting up of the calculating of emission factor and mathematical model should be standard with certain temperature, also only in the consistance that could guarantee under the condition of strict temperature control after each sampling and simulation different fixing source are being discharged into atmosphere.Therefore, do not have precise dose control must cause the precision of sampling not enough, and to later data processing, the calculating of emission factor and the foundation of mathematical model cause difficulty.
The utility model content
The purpose of this utility model provides the portable accurately flue gas constant temperature of a kind of sampling dilution sampling analyzer.
Portable flue gas constant temperature dilution sampling analyzer described in the utility model comprises the link that sampling thief is connected with the floss hole ring flange, flue dilution tunnel and chamber.Described link comprises front plate, rear plate, and U-shaped card between forward and backward clamping plate and the bolt that is connected above-mentioned three, its rear plate is provided with spacing jackscrew; Described flue dilution tunnel is a straight tube, comprise shower nozzle and trunk line with three nozzles, an end of trunk line is connected with one 90 degree elbow, is provided with the receipts head piece in this elbow, its end is connected with four thief hatchs, and each thief hatch is connected with a chamber respectively by pipeline.
Described small end bore of having in one's care mouthful is 1: 2 with the ratio in large port footpath.
Described chamber comprises reduced diameter portion, and end bucket and the stop chamber that is connected with end bucket by clip and reduced diameter portion are equipped with the particle cutting head in the bucket.
Employing device described in the utility model also is provided with air preheater, before the air cleaner that this air preheater is arranged on shower nozzle is connected.
Outside air cleaner, dilution tunnel, chamber and their connecting tube, thermal insulating warm-keeping layer is set.
Employing device described in the utility model also has humidity control system, and this system comprises temperature sensor and the pressure unit that is arranged on the Venturi tube, is controlled by computer supervisory control system.
Employing device described in the utility model also is provided with two bracing frames, and this bracing frame comprises base with roller and the support post that is installed on the base, and described column is provided with the active card ring seat, has the semicircle snap ring of two mutual hinges on the snap ring seat.
The advantage and the good effect of portable flue gas constant temperature dilution sampling analyzer described in the utility model are as follows:
1. fixed, can not change, and make sampling inaccurate because of the mobile level of sampling pipe and the vertical position of causing of dilution tunnel;
2. owing to receive the design of head piece and increased the heat-insulation layer temperature control device, improved sampling precision;
3. because the miniaturization of chamber makes whole instrument become very small and exquisite, be fit to the flue sampling work of various conditions more.
4. this dilution tunnel is designed to straight tube meeting on the basis of rules, and is littler with respect to the dilution tunnel design volume of traditional U type pipe, and big flow blower fan, air cleaner, chamber are separated with trunk line, adopts flange to connect various piece, is easier to transportation.
Description of drawings
Fig. 1 is a portable flue gas constant temperature dilution sampling analyzer structural representation described in the utility model;
Fig. 2 is the structural representation of the chamber of analyzer shown in Figure 1;
Fig. 3 is the another kind of user mode synoptic diagram of the chamber of analyzer shown in Figure 2;
Fig. 4 is an A portion structural representation among Fig. 1;
The structural representation of the link of the analyzer that Fig. 5 chamber is shown in Figure 1;
Fig. 6 is the side view of Fig. 4.
Embodiment
Referring to Fig. 1, portable flue gas constant temperature dilution sampling analyzer described in the utility model comprises the link 16 that sampling thief is connected with the floss hole ring flange, flue gas dilution tunnel 6 and chamber 12.
Described flue gas dilution tunnel 6 is a straight tube, comprises shower nozzle 5 and trunk line 7 with three nozzles.Described three nozzles 5 120 degree of being separated by are arranged, to guarantee can to enter trunk line 7 uniformly with enough flows through the pure air of air cleaner 14.The other end of trunk line 7 is connected with one 90 degree elbow 9, is provided with in this elbow and receives head piece 10, and its end is connected with four thief hatchs 11, and each thief hatch is connected with chamber 12 respectively by pipeline.During use, four thief hatchs can determine to use number according to the species number of being sampled, and when only using two thief hatchs, two other thief hatch can be blocked, and can connect chamber 12.
Described to have mouthfuls 10 in one's care be in order to overcome because trunk line 7 is turned, and the bulky grain thing in the gas is because inertia effect is inevitable assembles to the pipeline outside, and the size distribution of the particle in the gas in the time of causing sampling changes, and makes sampling inaccurate and design.The degree of mixing of gas is by the Reynolds number decision of gas, and the Reynolds number formula is as follows:
Re＝ρdu/μ
u＝4Q/πd
2
Re＝4Qρ/πdμ
In the formula: Re-Reynolds number
ρ-gas density
D-pipe diameter
Gas speed in u-pipeline
μ-gas viscosity coefficient
Gas flow in Q-pipeline
The receipts head piece of the utility model design, the bore of pipeline has been reduced 1/2, so just make the Reynolds number of gas become big one times, particle in the gas is further fully mixed, big particle diameter particle can not caused damage because of the pipeline factor of dilution tunnel, just can make flue gas, the gas collection of dilute sample, analysis rationalize more, and the calculating of assurance emission factor and the foundation of mathematical model are more accurate.Trunk line is very high the Reynolds number design of when design, and gas is in turbulence state in pipeline, can guarantee that mixed flue gas and carrier gas fully mix after diluting trunk line entering; Flue gas is through fully mixing, and the dilution back sucks chamber by sample tap, and unnecessary carrier gas is taken away by big flow blower fan.
Referring to Fig. 2 and Fig. 3, described chamber 12 comprises reduced diameter portion 19, end bucket 22 with by clip 20 with the stop chamber 21 that reduced diameter portion 19 is connected with end bucket 22, particle cutting head 23 is housed in the end bucket 22.Install the particle cutting head 23 of gathering PM10, PM2.5 and TSP additional according to different sampling requests, adopt Wen Qiuli pipe 37 control streams.It is detachable to stop chamber 21, and reduced diameter portion 19 directly is connected with end bucket 22 by clip 20, can gather the aerosol sample without stop, when needs collection during through the aerosol sample of stop, loads onto stop chamber 21 and gets final product.Can only gather the shortcoming that stops the back sample thereby changed traditional chamber, can gather, carry out the analysis of particle nucleation process without the aerosol sample after stopping and stopping.
The chamber volume of tradition dilution tunnel is very big, is not easy to transportation and field sampling, and therefore, the present invention has designed the chamber of miniaturization.
Referring to Fig. 5 and Fig. 6, described link 16 comprises front plate 29, rear plate 34, U-shaped card 30 between forward and backward clamping plate 29,34 and the bolt 33 that is connected above-mentioned three.During installation, the sampling pipe 2 that will have isokinetic sampling 1 is put into the hole of the flue flange dish 36 that is installed on the walling of flue 35, U-shaped card 30 ring flange 36 surfaces that recline are sleeved on the sampling pipe 2, and rear plate 34 reclines the another side of ring flange 36 with nut 28 fastening getting final product.Rear plate 34 is provided with spacing jackscrew 32, and an end of jackscrew is provided with limiting plate 31.This jackscrew can be with the distance adjustment between two clamping plate to the scope that is fit to flange thickness, can avoid forward and backward clamping plate stressed after, the horizontal positioned of sampling pipe is finally guaranteed in sampling pipe 2 issuable inclinations, isokinetic sampling 1 is parallel in the flue gas direction.Because sampling pipe is a stainless steel material, be connected firmly with employing between the dilution tunnel, so She Ji clamping plate not only can guarantee the level of sampling pipe like this, have also fixed the position of dilution tunnel, guarantee can not change because of the mobile level of sampling pipe and the vertical position of causing of dilution tunnel.
Referring to Fig. 1 and Fig. 4, for guaranteeing the accurate position of dilution tunnel in the sampling process, the utility model is provided with two bracing frames 18.Each bracing frame 18 comprises base 24 with roller and the support post 25 that is installed on the base respectively.Described column 25 is provided with the active card ring seat 26 that can move up and down on column, have the semicircle snap ring 27 of two mutual hinges on the snap ring seat.Insert in two semicircle snap rings 27 during installation, with dilution tunnel and use bolt, adjust collar seat 26 then dilution tunnel and sampling pipe 2 are remained on the same horizontal line, with bolt collar seat.
For guaranteeing to be sampled the detected temperatures of gas, analyzer described in the utility model also is provided with air preheater 13, and this air preheater 13 is arranged on before the air cleaner 14 that is connected with shower nozzle 5, with the temperature of assurance clean air in 20 ± 5 ℃ of scopes.When ambient air temperature is higher, reduce the gas temperature that enters air cleaner, when ambient air temperature was low, raising entered the gas temperature of air cleaner, further reaches the purpose of regulating system gas temperature.Outside air cleaner 14, dilution tunnel 6, chamber 12 and their connecting tube thermal insulating warm-keeping layer is set, carries out adiabatic heat-insulation with glass silk floss, the temperature of the mixed gas after guaranteeing to dilute is about 25 ℃.
The stationary source pollutant exists with aerocolloidal form in discharge process, and temperature forms gasoloid and has a significant impact.The tradition dilution tunnel does not have humidity control system in the flue gas dilution process, therefore, can not guarantee the repeatability and the accuracy of sampling, and to later data processing, the calculating of emission factor and the foundation of mathematical model cause difficulty.At this shortcoming, the utility model has increased humidity control system.This system comprises temperature sensor 17 and the pressure unit 4 that is installed on the Venturi tube 3, by computer supervisory control system control 15.Adjustment is by air preheater 13, and the temperature that guarantees clean air is in 20 ± 5 ℃ of scopes, and the effect of temperature sensor is the temperature in the monitoring pipeline.The effect of pressure unit is to measure the flow that the pressure at Venturi tube two ends is determined flue gas.
By regulating the temperature of the whole carrier gas of pure air adjustment that air cleaner flows out, the carrier gas temperature is remained on about 25 ℃, unified sample temperature, guaranteed the repeatability of sampling precision, sampling, the emission factor that calculates like this has more comparability.
Claims (10)
1, portable flue gas constant temperature dilution sampling analyzer, comprise the link (16) that sampling thief is connected with the floss hole ring flange, flue dilution tunnel (6) and chamber (12), it is characterized in that described link (16) comprises front plate (29), rear plate (34), U-shaped card (30) between forward and backward clamping plate and the bolt that is connected above-mentioned three (31), its rear plate (34) is provided with spacing jackscrew (32); Described flue dilution tunnel (6) is a straight tube, comprise shower nozzle (5) and trunk line 7 with three nozzles, one end of trunk line (7) is connected with one 90 degree elbow 9, be provided with in this elbow and receive head piece (10), its end is connected with four thief hatchs (11), and each thief hatch is connected with a chamber (12) respectively by pipeline.
2, analyzer according to claim 1 is characterized in that the described small end bore of having mouthful (10) in one's care and the ratio in large port footpath are 1: 2.
3, analyzer according to claim 1 and 2, it is characterized in that described chamber (12) comprises reduced diameter portion (19), end bucket (22) and the stop chamber (21) that is connected with end bucket (22) by clip (20) and reduced diameter portion (19) are equipped with particle cutting head (23) in the bucket.
4, analyzer according to claim 3 is characterized in that also being provided with air preheater (13), and this air preheater is arranged on the air cleaner (14) that is connected with shower nozzle (5) before.
5, analyzer according to claim 3 is characterized in that outside air cleaner (14), dilution tunnel (6), chamber (12) and their connecting tube thermal insulating warm-keeping layer being set.
6, analyzer according to claim 4 is characterized in that outside air cleaner (14), dilution tunnel (6), chamber (12) and their connecting tube thermal insulating warm-keeping layer being set.
7, analyzer according to claim 5 is characterized in that also having humidity control system, and this system comprises temperature sensor (17) and the pressure unit (4) that is arranged on the Venturi tube (3), is controlled by computer supervisory control system.
8, analyzer according to claim 6 is characterized in that also having humidity control system, and this system comprises temperature sensor (17) and the pressure unit (4) that is arranged on the Venturi tube (3), is controlled by computer supervisory control system.
9, analyzer according to claim 7, it is characterized in that also being provided with two bracing frames (18), this bracing frame (18) comprises the base (24) with roller and is installed in support post (25) on the base, described column (25) is provided with active card ring seat (26), has the semicircle snap ring (27) of two mutual hinges on the snap ring seat.
10, analyzer according to claim 8, it is characterized in that also being provided with two bracing frames (18), this bracing frame (18) comprises the base (24) with roller and is installed in support post (25) on the base, described column (25) is provided with active card ring seat (26), has the semicircle snap ring (27) of two mutual hinges on the snap ring seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088973 CN2725882Y (en) | 2004-08-27 | 2004-08-27 | Portable duct gas contstant temp. diluting sampling analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088973 CN2725882Y (en) | 2004-08-27 | 2004-08-27 | Portable duct gas contstant temp. diluting sampling analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2725882Y true CN2725882Y (en) | 2005-09-14 |
Family
ID=35040597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420088973 Expired - Lifetime CN2725882Y (en) | 2004-08-27 | 2004-08-27 | Portable duct gas contstant temp. diluting sampling analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2725882Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320345C (en) * | 2004-08-27 | 2007-06-06 | 中国环境科学研究院 | Portable flue gas constant temperature dilution sampling analyzer |
| CN104034571A (en) * | 2014-05-23 | 2014-09-10 | 上海大学 | Automatic diluting system for fed samples of single-particle aerosol mass spectrometer |
| CN103471876B (en) * | 2013-09-12 | 2016-04-06 | 北京华泰泽瑞环境技术有限公司 | Dilution sampling probe |
-
2004
- 2004-08-27 CN CN 200420088973 patent/CN2725882Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320345C (en) * | 2004-08-27 | 2007-06-06 | 中国环境科学研究院 | Portable flue gas constant temperature dilution sampling analyzer |
| CN103471876B (en) * | 2013-09-12 | 2016-04-06 | 北京华泰泽瑞环境技术有限公司 | Dilution sampling probe |
| CN104034571A (en) * | 2014-05-23 | 2014-09-10 | 上海大学 | Automatic diluting system for fed samples of single-particle aerosol mass spectrometer |
| CN104034571B (en) * | 2014-05-23 | 2017-01-04 | 上海大学 | A kind of individual particle aerosol mass spectrometer sample introduction automatic dilution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040827 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |