CN104990771A - Multipoint measurement flue gas sampling device with cooling function - Google Patents
Multipoint measurement flue gas sampling device with cooling function Download PDFInfo
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- CN104990771A CN104990771A CN201510450246.3A CN201510450246A CN104990771A CN 104990771 A CN104990771 A CN 104990771A CN 201510450246 A CN201510450246 A CN 201510450246A CN 104990771 A CN104990771 A CN 104990771A
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Abstract
A multipoint measurement flue gas sampling device with a cooling function is composed of a flue gas premixing box (1), flue gas passages (2), a pre-mixing box internal cylinder (3), a flue gas outlet (4), an air pump (5), an analysis box (6), a sampling hole (7), a float flowmeter (8), a smoke dust filter (9), a regulation valve (10), a cooling water inlet (11), a flue gas sampling gun (12), a cooling water inlet (13), a flexible pipe (14), a sewage draining outlet (15), a flue gas spoiler (16), heat exchange fins (17), a pipe sleeve (18), a flue gas inlet face (19), a flue gas pipe (20), a flue gas outlet face (21), a pipe connector (22), and cooling water diversion plates (23). The multipoint measurement flue gas sampling device can achieve synchronous and equivalent flue gas sampling on multiple measuring points in a flue gas sampling analysis work, also has the flue gas cooling function, finally reaches the purposes that flue gas samples taken from the multiple measuring points are fully mixed and the multipoint measured flue gas composition average value can be obtained accurately through one-time measurement, thereby greatly reducing the workload and the operation time of test staff.
Description
Technical field
The present invention relates to a kind of flue gas sampling device, particularly relate to a kind of multi-spots way flue gas sampling device with refrigerating function.
Background technology
Along with country is to the continuous attention of energy consumption equipment energy-saving and emission-reduction work, each province, the whole nation all moves forward steadily and spreads out the work of boiler efficiency test under policy is guided, wherein GB/T 10184-88 " station boiler performance test code " specifies that station boiler " should adopt gridding method or representative points mensuration " for the analysis of boiler tail flue gas in testing, even if for Industrial Boiler, when boiler back end ductwork sectional area is larger, for ensureing the accuracy of test data, also sample analysis should be carried out according to gridding method or multipoint method to flue gas.Conventional measuring method is: tester is according to back-end ductwork shape and the good measuring point of size cloth, extend predetermined position of layouting successively with opium pipe in test process to carry out sampling and analyzing, last again by the data summarization of each point, indices gets arithmetic mean as a result, when the measuring point quantity needing to arrange is more, the method is very big for workload tester, even causes tester cannot complete smoke sampling analytical work by regulation.
Although there is the flue gas sampling device of several form at present, but all fail to resolve following problem: 1, part Industrial Boiler there will be the situation that exhaust gas temperature reaches 250 DEG C even higher in testing simultaneously, just direct for flue gas suction is easily caused the loss of sampler parts without cooling; 2, fail during multidraw to ensure each sampling spot to get tolerance equal, cause test data error larger; 3, fail during multidraw to ensure that the flue gas that each sampling spot extracts fully mixes before analysis, finally cause test error; 4, sampler design is complicated, is not easy to carry and dismounting, and accessory and motor use too much, reduce the reliability that sampler uses.Therefore, existing flue gas sampling device is not all well positioned to meet the user demand of boiler efficiency test work.
Summary of the invention
For above Problems existing, the object of the present invention is to provide a kind of multi-spots way flue gas sampling device with refrigerating function meeting boiler efficiency test work user demand.
The technical solution used in the present invention is:
With a multi-spots way flue gas sampling device for refrigerating function, it is characterized in that:
Flue gas premix case is drum structure, the side bottom of flue gas premix case is provided with a sewage draining exit, premix case inner core is provided with in flue gas premix case, the end face of premix case inner core upper end and flue gas premix case is welded to connect, premix case inner core and flue gas premix case are formed through in flue gas flow spoiler place, the upper end face center of flue gas premix case is provided with exhanst gas outlet, exhanst gas outlet and premix case inner core through, exhanst gas outlet is connected to air pump by pipe fitting, air pump is connected to analysis case by pipe fitting, analyzes above case and has thief hole.
One end of exhaust gases passes is tangentially inserted near the circumference wall of tip position along flue gas premix case in flue gas premix case side, the other end of exhaust gases passes is connected to the side of giving vent to anger of suspended body flowmeter, the air inlet side of suspended body flowmeter is connected to the side of smoke filter, the opposite side of smoke filter is connected to variable valve side, and the opposite side of variable valve is connected to smoke sampling rifle by flexible pipe.
Exhaust gases passes is arranged symmetrically along the circular outer wall top of flue gas premix case, and the layout quantity of exhaust gases passes is determined according to actual user demand, only illustrates to the situation of employing four exhaust gases passes in this explanation.
Flue gas flow spoiler is wire side, orifice plate, the Turbogrid plates that can play flow-disturbing effect to gas, only to adopting the situation of wire side form to illustrate in this explanation.
The two ends of smoke sampling rifle are divided into gas approach face and exhanst gas outlet face, and smoke sampling rifle is being provided with pipe connector near side, exhanst gas outlet face, and the inside of smoke sampling rifle is provided with pipe box and fume pipe, the outer wall of fume pipe is provided with heat exchange fin.
Pipe box top is provided with cooling water intake near pipe connector side, and pipe box bottom is provided with cooling water intake near pipe connector side.
Pipe connector is arranged to the hollow cylinder being with recuspine structure.
Smoke sampling rifle is provided with chilled water fair water fin in pipe box central horizontal position.
The beneficial effect that the present invention has is:
1, the flue gas that each smoke sampling rifle obtains can fully mix by the present invention, when multimetering being carried out to tail flue gas in the work of boiler efficiency test, only disposable Measurement and analysis be need carry out with flue gas analyzer to the gas analyzed in case, running time and the workload of tester greatly saved.
2, smoke sampling rifle of the present invention has the function of cooled flue gas, and when tested boiler tail flue gas temperature is too high, the mode by water-cooled reduces the temperature of suction flue gas, plays the effect of protection sampler, adds the reliability of sampler.
3, smoke filter of the present invention can intercept the fly ash granule carried in suction flue gas, plays the effect of protection sampler parts, adds the reliability of sampler.
4, sewage draining exit of the present invention can so that the cleaning of flue gas premix case inside and foreign material be discharged.
5, the present invention can by suspended body flowmeter and variable valve accurate measurements and the exhaust gas volumn regulating each exhaust gases passes suction.
6, exhaust gases passes of the present invention tangentially to insert and circular outer wall top along flue gas premix case is arranged symmetrically along the circumference wall of flue gas premix case, namely form rotation after making flue gas enter flue gas premix case by exhaust gases passes to stream, finally reach the well-mixed object of flue gas.
7, flue gas flow spoiler of the present invention can make flue gas, when being entered premix case inner core by flue gas premix case, second-disturbing flow occur, and makes the further Homogeneous phase mixing of flue gas.
8, the present invention only has an air pump to be motor device, and equipment dependability is strong, is easy to investigation and the maintenance of fault.
Accompanying drawing explanation
Fig. 1 is that structural principle of the present invention signal is main depending on partly cuing open figure.
Fig. 2 is that structural principle diagrammatic top of the present invention partly cuts open figure.
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is the structural principle constructed profile of smoke sampling rifle of the present invention.
Fig. 5 is the B-B sectional view of Fig. 4.
Fig. 6 is the C-C sectional view of Fig. 4.
In figure: 1 is flue gas premix case, 2 is exhaust gases passes, 3 is premix case inner core, 4 is exhanst gas outlet, 5 is air pump, 6 for analyzing case, 7 is thief hole, 8 is suspended body flowmeter, 9 is smoke filter, 10 is variable valve, 11 is cooling water intake, 12 is smoke sampling rifle, 13 is cooling water intake, 14 is flexible pipe, 15 is sewage draining exit, 16 is flue gas flow spoiler, 17 is heat exchange fin, 18 is pipe box, 19 is gas approach face, 20 is fume pipe, 21 is exhanst gas outlet face, 22 is pipe connector, 23 is chilled water fair water fin.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1, flue gas premix case 1 of the present invention is drum structure, the side bottom of flue gas premix case 1 is provided with a sewage draining exit 15, premix case inner core 3 is provided with in flue gas premix case 1, the end face of premix case inner core 3 upper end and flue gas premix case 1 is welded to connect, premix case inner core 3 and flue gas premix case 1 are formed through in flue gas flow spoiler 16 place, the upper end face center of flue gas premix case 1 is provided with exhanst gas outlet 4, exhanst gas outlet 4 is through with premix case inner core 3, exhanst gas outlet 4 is connected to air pump 5 by pipe fitting, air pump 5 is connected to by pipe fitting and analyzes case 6, analyze case 6 and have thief hole 7 above.
As shown in Figure 1 and Figure 2, one end of exhaust gases passes 2 is tangentially inserted near the circumference wall of tip position along flue gas premix case 1 in flue gas premix case 1 side, the other end of exhaust gases passes 2 is connected to the side of giving vent to anger of suspended body flowmeter 8, the air inlet side of suspended body flowmeter 8 is connected to the side of smoke filter 9, the opposite side of smoke filter 9 is connected to variable valve 10 side, and the opposite side of variable valve 10 is connected to smoke sampling rifle 12 by flexible pipe 14.
As shown in Figure 2, described exhaust gases passes 2 is arranged symmetrically along the circular outer wall top of flue gas premix case 1, and the layout quantity of exhaust gases passes 2 is determined according to actual user demand, only illustrates to the situation of employing four exhaust gases passes 2 in this explanation.
As shown in Figure 3, described flue gas flow spoiler 16 is wire side, orifice plate, the Turbogrid plates that can play flow-disturbing effect to gas, only to adopting the situation of wire side form to illustrate in this explanation.
As shown in Figure 4, the two ends of described smoke sampling rifle 12 are divided into gas approach face 19 and exhanst gas outlet face 21, smoke sampling rifle 12 is being provided with pipe connector 22 near side, exhanst gas outlet face 21, the inside of smoke sampling rifle 12 is provided with pipe box 18 and fume pipe 20, the outer wall of fume pipe 20 is provided with heat exchange fin 17.
As shown in Figure 4, described pipe box 18 top is provided with cooling water intake 11 near pipe connector 22 side, and pipe box 18 bottom is provided with cooling water intake 13 near pipe connector 22 side.
As shown in Figure 4, Figure 5, described pipe connector 22 is arranged to the hollow cylinder being with recuspine structure.
As shown in Fig. 4, Fig. 5, Fig. 6, described smoke sampling rifle 12 is provided with chilled water fair water fin 23 in pipe box 18 central horizontal position, and the space of pipe box 18 is separated into upper and lower two parts and is not connected with gas approach face 19 to make the upper and lower space in pipe box 18 be formed through by chilled water fair water fin 23.
The course of work of the present invention is as follows:
When test starts, sealing sewage draining exit 15, opens air pump 5, and whether reading is normal to check on each exhaust gases passes 2 suspended body flowmeter 8, and closes by closing variable valve 10 exhaust gases passes 2 do not used, the smoke sampling rifle 12 of the exhaust gases passes 2 of each use is inserted in boiler back end ductwork, and ensure that gas approach face 19 arrives predetermined point position, reexamine the reading of the suspended body flowmeter 8 of each use passage, and by adjustment variable valve 10 aperture, suspended body flowmeter 8 reading of each passage is consistent, now can ensure that the exhaust gas volumn entering flue gas premix case 1 in each exhaust gases passes 2 is equal, flue gas is drawn into fume pipe 20 by gas approach face 19, pass through flexible pipe 14 subsequently successively through variable valve 10, smoke filter 9, suspended body flowmeter 8 enters exhaust gases passes 2, inwall along flue gas premix case 1 is tangentially injected, form rotation with the flue gas being entered flue gas premix case 1 by other exhaust gases passes 2 stream and mix rapidly, be drawn in premix case inner core 3 by flue gas premix case 1 inside through flue gas flow spoiler 16 again, flue gas forms flow-disturbing when through flue gas flow spoiler 16, the flue gas impelling each exhaust gases passes 2 to enter further fully mixes, the flue gas finally mixed enters into analysis case 6 by exhanst gas outlet 4 through air pump 5, the probe of flue gas analyzer can insert in thief hole 7 and test by tester, one group of data when flue gas analyzer stable reading are just the mean value of each representative point smoke components in boiler back end ductwork, when boiler tail exhaust gas temperature is too high, chilled water should be passed into pipe box 18 by cooling water inlet pipe 11, chilled water flows along chilled water fair water fin 23 and proceeds to lower side space by space on the upside of pipe box in pipe box 18, by coming and the high-temperature flue gas heat exchange in fume pipe 20 with the exterior surface of heat exchange fin 17 and fume pipe 20, final chilled water is discharged by cooling water intake 13.
Claims (8)
1. the multi-spots way flue gas sampling device with refrigerating function, by flue gas premix case (1), exhaust gases passes (2), premix case inner core (3), exhanst gas outlet (4), air pump (5), analyze case (6), thief hole (7), suspended body flowmeter (8), smoke filter (9), variable valve (10), cooling water intake (11), smoke sampling rifle (12), cooling water intake (13), flexible pipe (14), sewage draining exit (15), flue gas flow spoiler (16), heat exchange fin (17), pipe box (18), gas approach face (19), fume pipe (20), exhanst gas outlet face (21), pipe connector (22), chilled water fair water fin (23) forms, it is characterized in that: flue gas premix case (1) is drum structure, the side bottom of flue gas premix case (1) is provided with a sewage draining exit (15), premix case inner core (3) is provided with in flue gas premix case (1), the end face of premix case inner core (3) upper end and flue gas premix case (1) is welded to connect, premix case inner core (3) and flue gas premix case (1) are formed through in flue gas flow spoiler (16) place, the upper end face center of flue gas premix case (1) is provided with exhanst gas outlet (4), exhanst gas outlet (4) is through with premix case inner core (3), exhanst gas outlet (4) is connected to air pump (5) by pipe fitting, air pump (5) is connected to by pipe fitting and analyzes case (6), analyze case (6) and have thief hole (7) above.
2. a kind of multi-spots way flue gas sampling device with refrigerating function according to claim 1, it is characterized in that: one end of exhaust gases passes (2) is tangentially inserted near the circumference wall of tip position along flue gas premix case (1) in flue gas premix case (1) side, the other end of exhaust gases passes (2) is connected to the side of giving vent to anger of suspended body flowmeter (8), the air inlet side of suspended body flowmeter (8) is connected to the side of smoke filter (9), the opposite side of smoke filter (9) is connected to variable valve (10) side, the opposite side of variable valve (10) is connected to smoke sampling rifle (12) by flexible pipe (14).
3. a kind of multi-spots way flue gas sampling device with refrigerating function according to claim 1,2, it is characterized in that: described exhaust gases passes (2) is arranged symmetrically along the circular outer wall top of flue gas premix case (1), the layout quantity of exhaust gases passes (2) does not limit.
4. a kind of multi-spots way flue gas sampling device with refrigerating function according to claim 1, is characterized in that: described flue gas flow spoiler (16) is wire side, orifice plate, the Turbogrid plates that can play flow-disturbing effect to gas.
5. a kind of multi-spots way flue gas sampling device with refrigerating function according to claim 1, it is characterized in that: the two ends of described smoke sampling rifle (12) are divided into gas approach face (19) and exhanst gas outlet face (21), smoke sampling rifle (12) is being provided with pipe connector (22) near exhanst gas outlet face (21) side, the inside of smoke sampling rifle (12) is provided with pipe box (18) and fume pipe (20), the outer wall of fume pipe (20) is provided with heat exchange fin (17).
6. a kind of multi-spots way flue gas sampling device with refrigerating function according to claim 1,5, it is characterized in that: described pipe box (18) top is provided with cooling water intake (11) near pipe connector (22) side, pipe box (18) bottom is provided with cooling water intake (13) near pipe connector (22) side.
7. a kind of multi-spots way flue gas sampling device with refrigerating function according to claim 1,5,6, is characterized in that: described pipe connector (22) is arranged to the hollow cylinder being with recuspine structure.
8. a kind of multi-spots way flue gas sampling device with refrigerating function according to claim 1,2,5,6, it is characterized in that: described smoke sampling rifle (12) is provided with chilled water fair water fin (23) in pipe box (18) central horizontal position, the space of pipe box (18) is separated into upper and lower two parts and is not connected with gas approach face (19) to make the upper and lower space in pipe box (18) be formed through by chilled water fair water fin (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510450246.3A CN104990771A (en) | 2015-07-29 | 2015-07-29 | Multipoint measurement flue gas sampling device with cooling function |
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| CN201510450246.3A CN104990771A (en) | 2015-07-29 | 2015-07-29 | Multipoint measurement flue gas sampling device with cooling function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107561222A (en) * | 2017-09-30 | 2018-01-09 | 浙江力聚热水机有限公司 | A kind of flue gas analysis device |
| CN108007731A (en) * | 2018-01-16 | 2018-05-08 | 国电环境保护研究院有限公司 | A kind of gas fired-boiler smoke sampling system and smoke sampling method |
| CN110631887A (en) * | 2019-10-31 | 2019-12-31 | 国网河北省电力有限公司电力科学研究院 | Front gas dilution device for precision instrument measurement |
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