CN205643383U - Monitoring of flue gas section average flowing speed improves device - Google Patents
Monitoring of flue gas section average flowing speed improves device Download PDFInfo
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- CN205643383U CN205643383U CN201620429551.4U CN201620429551U CN205643383U CN 205643383 U CN205643383 U CN 205643383U CN 201620429551 U CN201620429551 U CN 201620429551U CN 205643383 U CN205643383 U CN 205643383U
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- static pressure
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- stagnation pressure
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Abstract
The utility model discloses a monitoring of flue gas section average flowing speed improves device, it is low to aim at solving current flue gas single -point method cross -section velocity of flow monitoring devices survey precision, and the error is big not enough. The utility model discloses an including the average section of thick bamboo of static pressure, an equal section of thick bamboo always flattens, the apparatus, a plurality of pitot tube, the average section of thick bamboo front end equipartition of static pressure is equipped with a plurality of static pressure input tube, the average section of thick bamboo rear end intermediate position of static pressure is equipped with the static pressure output tube, the equal section of thick bamboo front end equipartition that always flattens is equipped with a plurality of and always presses the input tube, the equal section of thick bamboo rear end intermediate position that always flattens is equipped with total pressure output tube, the pitot tube, the static pressure input tube, always press input tube three quantity to equal, the static pressure input tube is connected respectively to the static pressure output of pitot tube, total pressure input tube is connected respectively to total pressure output of pitot tube, static pressure output tube and always press the output tube all to connect on the apparatus. Monitoring of flue gas section average flowing speed improves device has improved the survey precision of the flue gas cross -section velocity of flow greatly, and the evaluated error is little, and equipment drops into for a short time.
Description
Technical field
This utility model relates to a kind of flue gas flow rate and measures system, more specifically, it relates to a kind of flue gas mean velocity in section monitoring improves device.
Background technology
At present, tradition flue gas continuous automatic sampling system middle section measurement of rate of flow great majority use S type pitot tube flue gas flow rate analyzer, owing to analyzer input cost is limited, conventional method is to use separate unit flow meters to measure a certain flow velocity representing point on cross section, then surveyed by on-the-spot multiple spot, obtain the average speed in cross section, the ratio of average speed and this spot speed, it is velocity field coefficient, is multiplied by velocity field coefficient with this some actual measurement flow velocity and obtains the mean flow rate in cross section.Due to measured section velocity flow profile except with cross section before and after outside the Pass flue shape and change mutually, also relevant to capacity change, so velocity field coefficient is only used for keep the correctness of measurement result when live capacity is close with the capacity during coefficient of finding speed field, but in practical measurement, the capacity of flue gas changes the most greatly, because of the adjustment of operating mode, capacity occurs the fluctuation of 50% to be ordinary affair, and the evaluated error thus caused can be the biggest.
Utility model content
It is low that this utility model overcomes existing flue gas single-point method cross sectional flow rate monitoring device measurement accuracy, the deficiency that error is big, it is provided that a kind of flue gas mean velocity in section monitoring improves device, and it substantially increases the measurement accuracy of flue gas cross sectional flow rate, evaluated error is little, and equipment investment is little.
In order to solve above-mentioned technical problem, this utility model is by the following technical solutions: a kind of flue gas mean velocity in section monitoring improves device, including the average cylinder of static pressure, the average cylinder of stagnation pressure, analyzer, several pitot tubes, static pressure average cylinder front end is laid with several static pressure input pipes, static pressure average tube rear end centre position is provided with static pressure outlet tube, stagnation pressure average cylinder front end is laid with several stagnation pressure input pipes, stagnation pressure average tube rear end centre position is provided with stagnation pressure outlet tube, pitot tube, static pressure input pipe, stagnation pressure input pipe three's quantity is equal, the static pressure outfan of pitot tube connects static pressure input pipe respectively, the stagnation pressure outfan of pitot tube connects stagnation pressure input pipe respectively, static pressure outlet tube and stagnation pressure outlet tube are both connected on analyzer.
During flue gas monitoring, by flue gas flow rate monitoring code requirement, the test side of multiple different pitot tubes is arranged on the diverse location of flue, the static pressure outfan of all pitot tubes is connected on the static pressure input pipe on the average cylinder of static pressure, by the detection static pressure set of diverse location pitot tube in the average cylinder of static pressure averagely after export analyzer from the static pressure outlet tube of the average cylinder of static pressure and detect；The stagnation pressure outfan of all pitot tubes is connected on the stagnation pressure input pipe on the average cylinder of stagnation pressure, by the detection stagnation pressure set of diverse location pitot tube in the average cylinder of stagnation pressure averagely after export analyzer from the stagnation pressure outlet tube of the average cylinder of stagnation pressure and detect.The result that analyzer records is the flue gas mean flow rate that all pitot tubes record, and measurement accuracy is high, and evaluated error is little, and equipment investment is little.
As preferably, it is respectively equipped with some pieces of static pressure division boards and stagnation pressure division board in the average cylinder of static pressure and the average cylinder of stagnation pressure, cylinder average with static pressure front end, static pressure division board front end is connected, static pressure division board rear end is near the average tube rear end of static pressure, cylinder average with stagnation pressure front end, stagnation pressure division board front end is connected, stagnation pressure division board rear end is near the average tube rear end of stagnation pressure, average for static pressure cylinder is separated into several and static pressure input pipe static pressure chamber one to one by static pressure division board, average for stagnation pressure cylinder is separated into several and stagnation pressure input pipe stagnation pressure chamber one to one by stagnation pressure division board, static pressure outlet tube extends close to static pressure division board position to static pressure division board direction, stagnation pressure outlet tube extends close to stagnation pressure division board position to stagnation pressure division board direction.Static pressure division board and stagnation pressure division board serve the effect of drain, pressure is avoided to cancel out each other decay, static pressure division board and centre position, stagnation pressure division board rear end are air-flow convergent point, static pressure outlet tube and stagnation pressure outlet tube extend inward into air-flow convergent point position, effect is all pressed in strengthening, and value is more accurate.
As preferably, pitot tube is S-shaped pitot tube.S-shaped pitot tube is measured precisely.
As preferably, static pressure input pipe and stagnation pressure input pipe are provided with 2-8 root.Pitot tube quantity arranges rationally, it is ensured that certainty of measurement.
As preferably, connect between the average cylinder of static pressure and the average cylinder of stagnation pressure and have connection seat, connect seat and average for static pressure cylinder and the average cylinder of stagnation pressure are linked together.Connecting seat makes the average cylinder of static pressure and the average cylinder of stagnation pressure connect into an entirety, it is simple to arranges and installs.
Compared with prior art, the beneficial effects of the utility model are: the monitoring of flue gas mean velocity in section improves device and substantially increases the measurement accuracy of flue gas cross section mean flow rate, evaluated error is little, and an analyzer just can complete the average detection of flue diverse location, and equipment investment is little.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is close-up schematic view of the present utility model；
Fig. 3 is partial side view of the present utility model；
In figure: 1, the average cylinder of static pressure, 2, the average cylinder of stagnation pressure, 3, analyzer, 4, pitot tube, 5, static pressure input pipe, 6, static pressure outlet tube, 7, stagnation pressure input pipe, 8, stagnation pressure outlet tube, 9, static pressure division board, 10, stagnation pressure division board, 11, static pressure chamber, 12, stagnation pressure chamber, 13, connect seat, 14, flue.
Detailed description of the invention
Below by specific embodiment, and combine accompanying drawing, the technical solution of the utility model be further described specifically:
Embodiment: a kind of flue gas mean velocity in section monitoring improves device (seeing accompanying drawing 1 to 3), including the average cylinder of static pressure 1, the average cylinder of stagnation pressure 2, analyzer 3, several pitot tubes 4, the average cylinder of static pressure and the average cylinder of stagnation pressure all tubular constructions in closed at both ends, pitot tube is S-shaped pitot tube.Static pressure average cylinder front end is laid with several static pressure input pipes 5, static pressure average tube rear end centre position is provided with static pressure outlet tube 6, stagnation pressure average cylinder front end is laid with several stagnation pressure input pipes 7, stagnation pressure average tube rear end centre position is provided with stagnation pressure outlet tube 8, pitot tube, static pressure input pipe, stagnation pressure input pipe three's quantity are equal, static pressure input pipe and stagnation pressure input pipe are provided with 2-8 root, and in the present embodiment, pitot tube, static pressure input pipe, stagnation pressure input pipe are equipped with four.The static pressure outfan of pitot tube connects static pressure input pipe respectively, and the stagnation pressure outfan of pitot tube connects stagnation pressure input pipe, static pressure outlet tube and stagnation pressure outlet tube respectively and is both connected on analyzer.It is respectively equipped with four pieces of static pressure division boards 9 and stagnation pressure division board 10 in the average cylinder of static pressure and the average cylinder of stagnation pressure, cylinder average with static pressure front end, static pressure division board front end is connected, static pressure division board rear end is near the average tube rear end of static pressure, cylinder average with stagnation pressure front end, stagnation pressure division board front end is connected, stagnation pressure division board rear end is near the average tube rear end of stagnation pressure, average for static pressure cylinder is separated into four and static pressure input pipe static pressure chamber 11 one to one by static pressure division board, average for stagnation pressure cylinder is separated into four and stagnation pressure input pipe stagnation pressure chamber 12 one to one by stagnation pressure division board, static pressure outlet tube extends close to static pressure division board position to static pressure division board direction, stagnation pressure outlet tube extends close to stagnation pressure division board position to stagnation pressure division board direction.Connect between the average cylinder of static pressure and the average cylinder of stagnation pressure and have connection seat 13, connect seat and average for static pressure cylinder and the average cylinder of stagnation pressure are linked together.
During flue gas monitoring, by flue gas flow rate monitoring code requirement, the test side of multiple different pitot tubes is arranged on the diverse location of flue 14, the static pressure outfan of all pitot tubes is connected on the static pressure input pipe on the average cylinder of static pressure, by the detection static pressure set of diverse location pitot tube in the average cylinder of static pressure averagely after export analyzer from the static pressure outlet tube of the average cylinder of static pressure and detect；The stagnation pressure outfan of all pitot tubes is connected on the stagnation pressure input pipe on the average cylinder of stagnation pressure, by the detection stagnation pressure set of diverse location pitot tube in the average cylinder of stagnation pressure averagely after export analyzer from the stagnation pressure outlet tube of the average cylinder of stagnation pressure and detect.The result that analyzer records is the flue gas cross section mean flow rate that all pitot tubes record, and measurement accuracy is high, and evaluated error is little, and equipment investment is little.
Embodiment described above is one of the present utility model preferably scheme, and this utility model is not made any pro forma restriction, also has other variant and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (5)
1. a flue gas mean velocity in section monitoring improves device, it is characterized in that, including the average cylinder of static pressure, the average cylinder of stagnation pressure, analyzer, several pitot tubes, static pressure average cylinder front end is laid with several static pressure input pipes, static pressure average tube rear end centre position is provided with static pressure outlet tube, stagnation pressure average cylinder front end is laid with several stagnation pressure input pipes, stagnation pressure average tube rear end centre position is provided with stagnation pressure outlet tube, pitot tube, static pressure input pipe, stagnation pressure input pipe three's quantity is equal, the static pressure outfan of pitot tube connects static pressure input pipe respectively, the stagnation pressure outfan of pitot tube connects stagnation pressure input pipe respectively, static pressure outlet tube and stagnation pressure outlet tube are both connected on analyzer.
Flue gas mean velocity in section the most according to claim 1 monitoring improves device, it is characterized in that, it is respectively equipped with some pieces of static pressure division boards and stagnation pressure division board in the average cylinder of static pressure and the average cylinder of stagnation pressure, cylinder average with static pressure front end, static pressure division board front end is connected, static pressure division board rear end is near the average tube rear end of static pressure, cylinder average with stagnation pressure front end, stagnation pressure division board front end is connected, stagnation pressure division board rear end is near the average tube rear end of stagnation pressure, average for static pressure cylinder is separated into several and static pressure input pipe static pressure chamber one to one by static pressure division board, average for stagnation pressure cylinder is separated into several and stagnation pressure input pipe stagnation pressure chamber one to one by stagnation pressure division board, static pressure outlet tube extends close to static pressure division board position to static pressure division board direction, stagnation pressure outlet tube extends close to stagnation pressure division board position to stagnation pressure division board direction.
Flue gas mean velocity in section the most according to claim 1 monitoring improves device, it is characterized in that, pitot tube is S-shaped pitot tube.
4. monitoring according to the flue gas mean velocity in section described in claim 1 or 2 or 3 and improve device, it is characterized in that, static pressure input pipe and stagnation pressure input pipe are provided with 2-8 root.
5. monitoring according to the flue gas mean velocity in section described in claim 1 or 2 or 3 and improve device, it is characterized in that, connecting between the average cylinder of static pressure and the average cylinder of stagnation pressure has connection seat, connects seat and average for static pressure cylinder and the average cylinder of stagnation pressure is linked together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620429551.4U CN205643383U (en) | 2016-05-12 | 2016-05-12 | Monitoring of flue gas section average flowing speed improves device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620429551.4U CN205643383U (en) | 2016-05-12 | 2016-05-12 | Monitoring of flue gas section average flowing speed improves device |
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| Publication Number | Publication Date |
|---|---|
| CN205643383U true CN205643383U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620429551.4U Expired - Fee Related CN205643383U (en) | 2016-05-12 | 2016-05-12 | Monitoring of flue gas section average flowing speed improves device |
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| CN (1) | CN205643383U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871725A (en) * | 2018-06-11 | 2018-11-23 | 广州大学 | A kind of modification method referring to static pressure for wind tunnel experiment |
-
2016
- 2016-05-12 CN CN201620429551.4U patent/CN205643383U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871725A (en) * | 2018-06-11 | 2018-11-23 | 广州大学 | A kind of modification method referring to static pressure for wind tunnel experiment |
| CN108871725B (en) * | 2018-06-11 | 2023-07-07 | 广州大学 | Correction method for wind tunnel experiment reference static pressure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 |
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| CF01 | Termination of patent right due to non-payment of annual fee |