CN207401379U - A kind of blending bin for the mixing sampling of gaseous pollutant multiple spot matrix - Google Patents

Abstract

The blending bin sampled is mixed for gaseous pollutant multiple spot matrix the utility model discloses a kind of, including：Babinet, multi-path sample gas admission line and aggregate sample gas outlet pipe, wherein, one end of sample gas admission line is arranged at the outside of babinet described in multichannel, it is connected with the port of export of sample gas collection tube by heat traced pipeline, the other end of multi-path sample gas admission line stretches into box house and the mixing chamber with being arranged at box house is connected, the flow-guiding channel mixed to multi-channel flue-gas is equipped in the mixing chamber, the port of export of flow-guiding channel connects aggregate sample gas outlet pipe one end connection, and the other end of aggregate sample gas outlet pipe is connected with analysis cabinet.The utility model blending bin can be excessive to avoid gas production, and sample gas cumulative in blending bin causes follow-up sample gas concentration to pollute and realize multi-path sample gas well-mixed effect in smaller mixer.

Description

A kind of blending bin for the mixing sampling of gaseous pollutant multiple spot matrix

Technical field

The utility model is related to solid particulate matter or gaseous pollutant monitoring technical fields, and gas is used for more particularly to one kind The blending bin of state pollutant multiple spot matrix mixing sampling.

Background technology

Since most domestic flue to be measured is due to technique and space limitation etc., flue arrangement is complicated, space It is narrow and small, straight pipe is shorter, be extremely difficult to the straight pipe measuring condition in uniform flow field or relatively uniform flow field（《Stationary source is arranged Solid particulate matter measures and the gaseous pollutant method of sampling in gas》（GB/T16157-1996）It is required that should have before sampled measurements section The flow development length of 6 times of equivalent diameters should have the flow development lengths of 3 times of equivalent diameters after measuring section）.Current all kinds of power stations, The flue gas emission flue of the industries such as boiler, building materials is almost not up to the sampling condition of above-mentioned national regulations, this single-point sampling Complexity and disorderly actual conditions of the mode compared with big section flue gas duct, the contingency that sampling is layouted is very big, is taken by it The sample gas gone out causes flue gas gaseous pollutant measurement of concetration number it is even more impossible to represent the mean concentration of the flue section gaseous pollutant It is larger according to error, the requirement that environmental protection administration's relevant criterion monitors flue gas gaseous pollutant on-line can not be met, can not also be made To carry out the lawful basis of collection of drainage dues to blowdown enterprise.

Each point oxygen amount is generally all inconsistent in flue cross section, when being sampled using flue gas blending bin, to ensure the accurate of sampling Property, it is desirable that it is identical into the flue gas flow on every probe tube of flue gas blending bin, but due to the static pressure of each point in flue cross section Also it is different, into blending bin before each probe tube flue gas flow it is generally all different.

Utility model content

For above-mentioned technical problem, the utility model proposes a kind of for the mixed of gaseous pollutant multiple spot matrix mixing sampling Mould assembling can obtain reasonable and representative flue cross section and be averaged flue gas concentration.

In order to realize above-mentioned technical purpose, the utility model uses following specific technical solution：

A kind of blending bin for the mixing sampling of gaseous pollutant multiple spot matrix, including：Babinet, multi-path sample gas admission line And aggregate sample gas outlet pipe, wherein, one end of sample gas admission line is arranged at the outside of babinet described in multichannel, is adopted with sample gas The port of export of collector is connected by heat traced pipeline, and the other end of multi-path sample gas admission line stretches into box house and with being arranged at case The mixing chamber connection in internal portion, the interior flow-guiding channel for being equipped with to mix multi-channel flue-gas of the mixing chamber, flow-guiding channel The port of export connect the connection of described aggregate sample gas outlet pipe one end, the other end and the analysis cabinet of aggregate sample gas outlet pipe connect It connects.

The blending bin is mounted on needle-shaped flowmeter and ball valve at the air inlet per road sample gas admission line.

Blending bin is internally provided with heating plant.

The volume of the mixing chamber is less than or equal to scattering pool volume in back-end analysis cabinet.

It is arranged in parallel in same level in babinet to put in sample gas admission line described in the multichannel of box house, and And every sample gas admission line S-shaped arrangement in same level.

The flow-guiding channel is spiral stream guidance passage.

The flow-guiding channel is orifice plate flow-guiding channel.

The flow-guiding channel is netted flow-guiding channel.

The flow-guiding channel is spiral stream guidance passage, and the spiral stream guidance passage is equipped with through hole.

The beneficial effects of the utility model are：

Flue gas is solved in mixed process the phenomenon that undercompounding, due to blending bin be collected to by multichannel gas circuit it is mixed By collecting all the way after mould assembling, since air pressure problem can cause that gas is not yet uniformly mixed or air inflow is inconsistent in blending bin Caused by sample gas concentration pollute；The utility model provides in the design of blending bin therefore, blending bin mixing chamber cavity volume Rear end CEMS analysis cabinet scattering light pool volumes need to be less than, while needle-shaped stream is installed in the air inlet pipeline that every road enters before blending bin Gauge and high temperature flow throttling ball valves are identical per road air inflow with high temperature throttle valve control by needle-shaped flowmeter；Simultaneously in blending bin Interior, blending bin mixing chamber volume is less than back-end analysis cabinet volume, avoids gas production excessive, and sample gas is after cumulative causes in blending bin Continuous sample gas concentration pollution；And indoor placement device water conservancy diversion axis is being mixed, multi-path sample gas can be sufficiently mixed in smaller mixing chamber.

Description of the drawings

Fig. 1 is the utility model blending bin internal structure schematic diagram；

Fig. 2 is each gas circuit top view inside the utility model blending bin；

Fig. 3 is netted flow-guiding channel structure diagram inside the utility model blending bin；

Fig. 4 is the A-A sectional views of Fig. 3；

Fig. 5 is the utility model blending bin internal whorl flow-guiding channel structure diagram；

Fig. 6 is the B-B sectional views of Fig. 4；

Fig. 7 is orifice plate flow-guiding channel structure diagram inside the utility model blending bin；

Fig. 8 is the C-C sectional views of Fig. 7；

Fig. 9 is screw channel structure diagram with holes inside the utility model blending bin；

Figure 10 is the D-D sectional views of Fig. 9.

Wherein, 3-1 is multi-path sample gas admission line；3-2 is babinet；3-3 is mixing chamber；3-4 is aggregate sample gas air outlet pipe Road；3-5 is heating plant.

Specific embodiment

The utility model is mixed for gaseous pollutant multiple spot matrix with reference to Figure of description and specific embodiment The technical solution for closing the blending bin of sampling is described in further detail.

As shown in Fig. 1 ~ Fig. 2, a kind of blending bin for the mixing sampling of gaseous pollutant multiple spot matrix, including babinet, more Road sample gas admission line and aggregate sample gas outlet pipe, wherein, one end of sample gas admission line is arranged at babinet described in multichannel Outside, be connected with the port of export of sample gas collection tube by heat traced pipeline, the other end of multi-path sample gas admission line stretches into babinet The internal and mixing chamber with being arranged at box house is connected, and is equipped in the mixing chamber and is led for what is mixed to multi-channel flue-gas Circulation road, the port of export of flow-guiding channel connect aggregate sample gas outlet pipe one end connection, aggregate sample gas outlet pipe it is another One end is connected with analysis cabinet.

As the utility model for preferred, the institute of the blending bin technical solution of gaseous pollutant multiple spot matrix mixing sampling It states and is mounted on needle-shaped flowmeter and ball valve at air inlet of the blending bin per road sample gas admission line.

As the utility model for the preferred of the blending bin technical solution of gaseous pollutant multiple spot matrix mixing sampling, mix Mould assembling is internally provided with heating plant.

As the utility model for preferred, the institute of the blending bin technical solution of gaseous pollutant multiple spot matrix mixing sampling The volume for stating mixing chamber is less than or equal to scattering pool volume in back-end analysis cabinet.

As the utility model for the preferred of the blending bin technical solution of gaseous pollutant multiple spot matrix mixing sampling, mix It is act as inside mould assembling mixing chamber equipped with guiding device, guiding device：The sample gas of acquisition is uniformly mixed；It prevents because of air inlet pipe The problem of the problem of far and near, caused rate of air sucked in required are uneven；Sample gas caused by preventing mixing chamber internal cause pressure reduction problem pollutes；It is convenient fixed When phase safeguards, disassembly, cleaning.

Mixing chamber internal diversion device type is as follows：

As shown in Fig. 3 ~ Fig. 4, flow-guiding channel is netted flow-guiding channel.

As shown in Fig. 5 ~ Fig. 6, flow-guiding channel is screw thread to circulation road.

As shown in Fig. 7 ~ Fig. 8, flow-guiding channel is orifice plate flow-guiding channel.

As shown in Fig. 9 ~ Figure 10, flow-guiding channel is screw thread diversion passage, and through hole is equipped in the screw thread diversion passage.

The flue gas sample gas gathered in each road heat traced pipeline is collected to blending bin sample inlet, passes through needle-shaped flowmeter and ball Valve is adjusted to identical flow velocity, is heated into blending bin internal duct；Flue gas sample gas mixes in blending bin into flue gas Room after mixing chamber internal diversion device uniformly mixing, exports into blending bin, summarizes to a heat traced pipeline, immediately into Enter and analyzed in back-end analysis cabinet.Blending bin is equipped with needle-shaped flowmeter and ball valve per road air inlet, and every road can be controlled to adopt Sample constant speed equivalent gathers sample gas, and high-temperature heating is used inside blending bin, and mixing chamber volume is less than or equal to scattering in back-end analysis cabinet Pool volume deposits to prevent sample gas and pollutes, while is equipped with diversion column inside mixing chamber and dredges drift net device so that flue gas mixes more Add fully.

Claims (9)

1. a kind of blending bin for the mixing sampling of gaseous pollutant multiple spot matrix, which is characterized in that including：Babinet, multi-path sample Gas admission line and aggregate sample gas outlet pipe, wherein, one end of sample gas admission line described in multichannel is arranged at the outer of babinet Portion is connected with the port of export of sample gas collection tube by heat traced pipeline, and the other end of multi-path sample gas admission line stretches into box house And the mixing chamber with being arranged at box house is connected, the water conservancy diversion for being equipped with to mix multi-channel flue-gas in the mixing chamber leads to Road, the port of export of flow-guiding channel connect aggregate sample gas outlet pipe one end connection, the other end of aggregate sample gas outlet pipe It is connected with analysis cabinet.

2. the blending bin according to claim 1 for the mixing sampling of gaseous pollutant multiple spot matrix, which is characterized in that institute It states and is mounted on needle-shaped flowmeter and ball valve at air inlet of the blending bin per road sample gas admission line.

3. the blending bin according to claim 1 for the mixing sampling of gaseous pollutant multiple spot matrix, which is characterized in that mixed Mould assembling is internally provided with heating plant.

4. the blending bin according to claim 1 for the mixing sampling of gaseous pollutant multiple spot matrix, which is characterized in that institute The volume for stating mixing chamber is less than or equal to scattering pool volume in back-end analysis cabinet.

5. the blending bin according to claim 1 for the mixing sampling of gaseous pollutant multiple spot matrix, which is characterized in that stretch Into sample gas admission line described in the multichannel of box house in babinet arranged in parallel, and every sample gas in same level Admission line S-shaped arrangement in same level.

6. the blending bin according to claim 1 for the mixing sampling of gaseous pollutant multiple spot matrix, which is characterized in that institute Flow-guiding channel is stated as spiral stream guidance passage.

7. the blending bin according to claim 1 for the mixing sampling of gaseous pollutant multiple spot matrix, which is characterized in that institute Flow-guiding channel is stated as orifice plate flow-guiding channel.

8. the blending bin according to claim 1 for the mixing sampling of gaseous pollutant multiple spot matrix, which is characterized in that institute Flow-guiding channel is stated as netted flow-guiding channel.

9. the blending bin according to claim 1 for the mixing sampling of gaseous pollutant multiple spot matrix, which is characterized in that institute Flow-guiding channel is stated as spiral stream guidance passage, the spiral stream guidance passage is equipped with through hole.