CN202126281U - Anti-clogging pressure equalizing air flow measuring device - Google Patents
Anti-clogging pressure equalizing air flow measuring device Download PDFInfo
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- CN202126281U CN202126281U CN2011201841627U CN201120184162U CN202126281U CN 202126281 U CN202126281 U CN 202126281U CN 2011201841627 U CN2011201841627 U CN 2011201841627U CN 201120184162 U CN201120184162 U CN 201120184162U CN 202126281 U CN202126281 U CN 202126281U
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Abstract
The utility model relates to a device which measures air flow through measuring pressure or pressure difference, particularly to an anti-clogging pressure equalizing air flow measuring device. The structural point is that the device comprises a plurality of external members; each external member comprises a total pressure side component and a static pressure side component; each total pressure side component comprises a plurality of total pressure side pressure tapping tubes, a total pressure side primary equalizing tube and a cyclone; and each static pressure side component comprises at least one static pressure side pressure tapping tube and a static pressure side primary pressure equalizing tube. The anti-clogging pressure equalizing air flow measuring device has the advantages that the total pressure side components and the static pressure side components adopt the design of back tube type multi-pressure tapping opening arrays, the pressure equalizing effect of each pressure tapping tube is good, and the representativeness of pressure measuring points are good under different air flow working conditions and different cold and hot state working conditions; and the total pressure side primary pressure equalizing tubes are obliquely installed at large angles, and the cyclones separate soot particles carried by flowing airflow in the pressure tapping tubes, which ensures that soot hardly accumulates in the pressure tapping tubes, the primary pressure equalizing tubes, secondary equalizing tubes and communicating tubes and realizes accurate and stable air flow measurement signals.
Description
Technical field
The utility model relates to a kind ofly measures the device of air quantity, particularly a kind of anti-blocking apparatus for measuring air quantity of all pressing through gaging pressure or pressure reduction.
Background technology
One, two, three wind air quantity of heat power plant boiler control direct relation boiler smooth combustion, economical operation, prevent coking, reduce serial important indicator such as pollutant emission, is the working contents of thermal power plant's safety, economy, environmental protection operation.The apparatus for measuring air quantity total head mouth of routine and static port insert in the air-flow, and the soot particle that carries in the air-flow is owing to the apparatus for measuring air quantity bump, with the effect of air current flow and frictional static, be bonded in pressure tappings and each pressure tappings connecting pipe easily.One, two, three wind of thermal power plant always carries a certain amount of soot particle through rotary regenerative air heater; Apparatus for measuring air quantity uses easy blocking for a long time; This obstruction occurs in apparatus for measuring air quantity inside; Can only solve with the way that pressurized air regularly purges, bring very big maintenance workload for thermal technology's specialty.Add the variation of boiler start/ stop process cold and hot state, soot particle caking in steam and the apparatus for measuring air quantity is difficult to remove in the air-flow.
And the apparatus for measuring air quantity pressure loss that has is also bigger; Adopt mode to increase the differential pressure signal that apparatus for measuring air quantity records like Venturi tube, airfoil type flowmeter to the air channel throttling; But increased the air current flow resistance, increased the blower fan power consumption, the economic attrition of long-term accumulation is more considerable.
In addition; The apparatus for measuring air quantity that thermal power plant is conventional; Like airfoil type, Venturi tube, bourdon's tube, lean against pipe, Annubar pipe, Verabar pipe etc.; The accuracy of measurement little in the occasion Use Limitation of even flow field fruit otherness, but, straight length weak point many for each power plant ubiquitous air channel elbow at present causes Flow Field Distribution inhomogeneous and with the occasion of working conditions change, that just being difficult to of these apparatus for measuring air quantity reaches satisfied.
The utility model content
The purpose of the utility model be the weak point according to existing air measuring technology provide a kind of can automatic ash removing, prevent to stop up, measuring accuracy is high, the anti-blocking apparatus for measuring air quantity of all pressing that resistance loss is little.
The utility model is realized through following approach:
The anti-blocking apparatus for measuring air quantity of all pressing; Its structural feature is, includes a plurality of external members, and each external member includes total head side assembly and static pressure side assembly; Total head side assembly includes a plurality of total head side-draws and presses pipe, balance pipe of a total head side and a whirlwind tube; The total head side-draw is pressed the mouth of pipe of managing, and air-flow flows to direction over against the air channel, and these a plurality of total head side-draws press Guan Jun to be connected to balance pipe of total head side, and are communicated with a balance pipe; Balance pipe of total head side connects through a kind of communicating pipe and is communicated to the whirlwind tube, and the whirlwind tube of total head side assembly all connects and is communicated to a kind of total head side secondary balance pipe in each external member; Static pressure side assembly includes at least one static pressure side-draw and presses pipe and balance pipe of static pressure side, and the mouth of pipe that the static pressure side-draw is pressed pipe and total head side-draw press the pipe mouth of pipe to press all connection balance pipes of communication channel static pressure side also of pipe back to, the static pressure side-draw in each external member; Total head side secondary balance pipe is connected to the malleation end of differential pressure transmitter, and balance pipe of static pressure side is connected to the negative pressure end of differential pressure transmitter.
Differential pressure transmitter calculates the air quantity in air channel according to the malleation value and the negative pressure value of sampling, realizes measuring.During use; Because it is that positive draft flows to that the total head side-draw is pressed pipe; So total head side assembly also is the most serious place of dust stratification, when soot particle along with air-flow gets into a balance pipe by the pressure pipe, and get into whirlwind tube and secondary balance pipe by a balance pipe; The rotary centrifugal force that the whirlwind tube produces can be isolated the most of soot particle in the air-flow that balance pipe comes; Soot particle is fallen into balance pipe again No. one time under the self gravitation effect, realize automatic ash removing, has solved air-flow and has carried the problem that soot particle stops up apparatus for measuring air quantity.In addition, the utility model adopts and all presses pressure, has solved the uneven situation in elbow multithread field, air channel, and measuring accuracy is high, and the air current flow resistance of apparatus for measuring air quantity is little, has reduced the blower fan power consumption, and energy-saving benefit is obvious.
The utility model can further be specially:
The setting angle of a balance pipe of total head side is 45 °-80 °.
The angle that axis that balance pipe setting angle of said total head side is a vial and air channel axis form; Because total head side one side balance pipe adopts wide-angle tilt to install; Soot particle in balance pipe will fall into the pressure pipe because of self gravitation, along with flowing of air-flow in air channel vibrations and the balance pipe; Can remove the dust stratification in the part balance pipe automatically, further realize anti-blocking technique effect.
The total head side-draw is pressed in the pipe automatic ash removing chain is installed, and the one of which end is installed in the upper lateral part of pressure pipe, and the other end is a free end.
Air-flow can produce certain flow perturbation when getting into the pressure pipe, drive the automatic ash removing chain vibration, and free end can be removed the dust stratification on pressure pipe and the pressure tappings, and reduces soot particle gets into balance pipe along communicating pipe ratio through flow perturbation.Through evidence, the automatic ash removing chain is worked in air-flow to not influence of pressure pipe pressure measurement.
A plurality of total head side-draws press the pipe pipe range identical, are distributed in the air channel with arrayed.
A plurality of pressure tappings can be more the whole air channel of impression section in Flow Field Distribution; All long total head side-draw presses pipe can provide each pressure tappings to one No. time balance pipe that identical all pressures effect is all arranged, and guarantees that the differential pressure measurement data all have good representativeness in different air quantity operating modes and cold and hot operating mode, realize the accuracy and the stability of air measuring.
A wherein port of the port of a balance pipe of total head side, total head side secondary balance pipe and a balance pipe of static pressure side is equipped with the dismountable purging mouth of nut.
Like this, all pressing apparatus for measuring air quantity under the situation of deashing, auxiliary with hand sweeping: as during unit maintenance, can to pass through the soot particle state in the endoscope sighting tube, and remove the dust stratification in the pipe through pressurized air or mechanical system.
In sum, the utility model provides a kind of anti-blocking apparatus for measuring air quantity of all pressing, and total head side assembly and static pressure side assembly have adopted many pressure tappings of backrest tubular type array design, the Flow Field Distribution in the section of the whole air channel of impression that can be more; All pressures of each pressure pipeline are effective, the pressure-measuring-point that is connected to transmitter representative good under different air quantity operating modes, cold and hot operating mode; Whirlwind tube through installing in installing before deashing chain, a balance pipe adopt wide-angle tilt installation, secondary balance pipe can be isolated the soot particle that air current flow is carried in each pressure pipe; Guarantee pressure pipe, balance pipe, secondary balance pipe and a communicating pipe thereof to lack dust stratification, guarantee that the air measuring signal is accurate, stable.Simultaneously, this apparatus for measuring air quantity pressure loss is also less, and the blower fan loss ratio of long-term accumulation is less, and energy-saving benefit is obvious.
Description of drawings
Shown in Figure 1 is the said anti-blocking structural representation of all pressing apparatus for measuring air quantity of the utility model background technology;
Below in conjunction with embodiment the utility model is done further elaboration.
Embodiment
Most preferred embodiment:
With reference to accompanying drawing 1, the anti-blocking apparatus for measuring air quantity of all pressing includes a plurality of external members, and each external member includes total head side assembly and static pressure side assembly;
Total head side assembly includes a plurality of total head side-draws and presses pipe balance pipe 2 of 1, total head side and a whirlwind tube 3; Each total head side-draw presses the pipe range of pipe 1 identical; The automatic ash removing chain is installed in the pipe; A plurality of total head side-draws press pipe to be evenly distributed in the air channel with arrayed; Air-flow flows to direction to the pressure mouth of pipe over against the air channel, and these a plurality of total head side-draws press pipe 1 all to be connected to balance pipe 2 of total head side, and are communicated with a balance pipe 2; Balance pipe 2 of total head side is installed with high spud angle, and setting angle is 60 °, and it connects through a kind of communicating pipes 4 and is communicated to whirlwind tube 3, and the whirlwind tube of total head side assembly all connects and is communicated to a kind of total head side secondary balance pipe 5 in each external member;
Static pressure side assembly includes at least one static pressure side-draw and presses pipe 6 and balance pipe 7 of static pressure side, the mouth of pipe that the static pressure side-draw is pressed pipe 6 and total head side-draw press pipe 1 mouth of pipe back to, the static pressure side-draw in each external member presses pipe 6 all to connect also balance pipe 7 of communication channel static pressure side; A wherein port of the port of a balance pipe 2 of total head side, total head side secondary balance pipe 5 and a balance pipe 7 of static pressure side is equipped with the dismountable purging mouth of nut.
Total head side secondary balance pipe 5 is connected to the malleation end of differential pressure transmitter, and balance pipe 7 of static pressure side is connected to the negative pressure end of differential pressure transmitter.
It is identical with prior art that the utility model is not stated part.
Claims (5)
1. the anti-blocking apparatus for measuring air quantity of all pressing; It is characterized in that; Include a plurality of external members; Each external member includes total head side assembly and static pressure side assembly, and total head side assembly includes a plurality of total head side-draws and presses pipe (1), a balance pipe of total head side (2) and a whirlwind tube (3), and the total head side-draw is pressed the mouth of pipe of managing (1), and air-flow flows to direction over against the air channel; These a plurality of total head side-draws press pipe (1) all to be connected to a balance pipe of total head side (2); And be communicated with a balance pipe, a balance pipe of total head side (2) connects through a kind of communicating pipe (4) and is communicated to whirlwind tube (3), and the whirlwind tube (3) of total head side assembly all connects and is communicated to a kind of total head side secondary balance pipe (5) in each external member; Static pressure side assembly includes at least one static pressure side-draw and presses pipe (6) and a balance pipe of static pressure side (7); The mouth of pipe that the static pressure side-draw is pressed pipe (6) and total head side-draw press pipe (1) mouth of pipe back to, the static pressure side-draw in each external member presses pipe (6) all to connect an also balance pipe of communication channel static pressure side (7); Total head side secondary balance pipe (5) is connected to the malleation end of differential pressure transmitter, and a balance pipe of static pressure side (7) is connected to the negative pressure end of differential pressure transmitter.
2. the anti-blocking apparatus for measuring air quantity of all pressing according to claim 1 is characterized in that, the setting angle of a balance pipe of total head side (2) is 45 °-80 °.
3. the anti-blocking apparatus for measuring air quantity of all pressing according to claim 1 is characterized in that, the total head side-draw is pressed in the pipe (1) the automatic ash removing chain is installed, and the one of which end is installed in the upper lateral part of pressure pipe, and the other end is a free end.
4. the anti-blocking apparatus for measuring air quantity of all pressing according to claim 1 is characterized in that, a plurality of total head side-draws press pipe (1) pipe range identical, are distributed in the air channel with arrayed.
5. the anti-blocking apparatus for measuring air quantity of all pressing according to claim 1; It is characterized in that a wherein port of the port of a balance pipe of total head side (2), total head side secondary balance pipe (5) and a balance pipe of static pressure side (7) is equipped with the dismountable purging mouth of nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201841627U CN202126281U (en) | 2011-06-02 | 2011-06-02 | Anti-clogging pressure equalizing air flow measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201841627U CN202126281U (en) | 2011-06-02 | 2011-06-02 | Anti-clogging pressure equalizing air flow measuring device |
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| Publication Number | Publication Date |
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| CN202126281U true CN202126281U (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201841627U Expired - Fee Related CN202126281U (en) | 2011-06-02 | 2011-06-02 | Anti-clogging pressure equalizing air flow measuring device |
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| CN (1) | CN202126281U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444833A (en) * | 2015-12-22 | 2016-03-30 | 南京天臣恒科技有限公司 | Pressure equalizing chamber, mounting method thereof and three-dimension space multi-point pressure measuring and cross section type gas flow measuring device containing pressure equalizing chamber |
| CN105716670A (en) * | 2016-04-21 | 2016-06-29 | 承德菲时博特自动化设备有限公司 | Multichannel rectangular needle tube flow measurement device |
| CN105784020A (en) * | 2016-04-21 | 2016-07-20 | 承德菲时博特自动化设备有限公司 | Rectangular needle tube flowmeter |
| CN106525187A (en) * | 2016-11-07 | 2017-03-22 | 北京雪迪龙科技股份有限公司 | Differential-pressure matrix flow meter, differential-pressure multipoint flow meter and anti-blocking pressure guide device |
| CN106525172A (en) * | 2016-11-16 | 2017-03-22 | 东南大学 | Power station air-gas flue flow measurement device |
| CN106679878A (en) * | 2017-01-11 | 2017-05-17 | 江西清华泰豪三波电机有限公司 | Kick-type static pressure measuring system |
| CN110672165A (en) * | 2019-11-14 | 2020-01-10 | 上海权宥环保科技有限公司 | Multi-point measurement Pitotbar flow sensor |
| CN110686735A (en) * | 2019-11-14 | 2020-01-14 | 上海权宥环保科技有限公司 | Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter |
-
2011
- 2011-06-02 CN CN2011201841627U patent/CN202126281U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444833A (en) * | 2015-12-22 | 2016-03-30 | 南京天臣恒科技有限公司 | Pressure equalizing chamber, mounting method thereof and three-dimension space multi-point pressure measuring and cross section type gas flow measuring device containing pressure equalizing chamber |
| CN105444833B (en) * | 2015-12-22 | 2018-10-19 | 南京铂锐能源科技有限公司 | A kind of equal pressure chamber, its installation method and the section formula gas flow surveying instrument comprising it |
| CN105716670A (en) * | 2016-04-21 | 2016-06-29 | 承德菲时博特自动化设备有限公司 | Multichannel rectangular needle tube flow measurement device |
| CN105784020A (en) * | 2016-04-21 | 2016-07-20 | 承德菲时博特自动化设备有限公司 | Rectangular needle tube flowmeter |
| CN106525187A (en) * | 2016-11-07 | 2017-03-22 | 北京雪迪龙科技股份有限公司 | Differential-pressure matrix flow meter, differential-pressure multipoint flow meter and anti-blocking pressure guide device |
| CN106525187B (en) * | 2016-11-07 | 2023-06-30 | 北京雪迪龙科技股份有限公司 | Differential pressure matrix flowmeter, differential pressure multi-point flowmeter and anti-blocking pressure guiding device |
| CN106525172A (en) * | 2016-11-16 | 2017-03-22 | 东南大学 | Power station air-gas flue flow measurement device |
| CN106525172B (en) * | 2016-11-16 | 2019-04-30 | 东南大学 | A kind of power station wind and smoke road flow measurement device |
| CN106679878A (en) * | 2017-01-11 | 2017-05-17 | 江西清华泰豪三波电机有限公司 | Kick-type static pressure measuring system |
| CN110672165A (en) * | 2019-11-14 | 2020-01-10 | 上海权宥环保科技有限公司 | Multi-point measurement Pitotbar flow sensor |
| CN110686735A (en) * | 2019-11-14 | 2020-01-14 | 上海权宥环保科技有限公司 | Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter |
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| Date | Code | Title | Description |
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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: 20120125 Termination date: 20190602 |
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| CF01 | Termination of patent right due to non-payment of annual fee |