CN203848867U - Rectification type total cross section multi-point self-ash-removing air duct flow measuring device - Google Patents
Rectification type total cross section multi-point self-ash-removing air duct flow measuring device Download PDFInfo
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- CN203848867U CN203848867U CN201420087242.4U CN201420087242U CN203848867U CN 203848867 U CN203848867 U CN 203848867U CN 201420087242 U CN201420087242 U CN 201420087242U CN 203848867 U CN203848867 U CN 203848867U
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- 238000010079 rubber tapping Methods 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 abstract 5
- 230000001788 irregular Effects 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000739 chaotic effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a rectification type total cross section multi-point self-ash-removing air duct flow measuring device comprising a differential pressure transmitter and a number of measuring probes, wherein self-ash-removing rods are arranged in vertical pipe segments of positive pressure side pressure tapping openings and negative pressure side pressure tapping openings of the measuring probes, the self-ash-removing rods can swing in an irregular manner under impact of an air flow in the air duct, positive pressure sides of all measuring probes are interconnected, negative pressure sides of all measuring probes are interconnected, all measuring probes form a fish-net-shaped structure, and a general pressure leading pipe is led out and connected with the differential pressure transmitter after signals of the positive and negative pressure sides are respectively gathered. According to the rectification type total cross section multi-point self-ash-removing air duct flow measuring device, kinetic energy of a flow body is used for a self-ash-removing purpose, signal jamming problems of dust-containing air flow wind speed and air quantity measuring devices are completely solved, an air channel flow body can be greatly reduced in pressure loss, remarkable energy saving effects and convenience of installation are realized, a total cross section multi-point measuring method is adopted, measurement results are accurate and good adjusting linearity is realized.
Description
Technical field
The utility model relates to a kind of flow measurement device, relates in particular to a kind of rectifier type total cross-section multiple spot from deashing airduct flow measurement device.
Background technology
At present, wind speed, apparatus for measuring air quantity of a great variety, mainly contains airfoil type, Venturi type, flute type, Annubar type, Verabar type, nozzle type and plug-in type orifice plate type etc., but the result of use of each wind speed, apparatus for measuring air quantity is very undesirable.Most of measurement mechanism does not all solve the blockage problem of Dual-Phrase Distribution of Gas olid body under complex working condition well, all has to some extent signal blockage, and maintenance workload is large, the problem that wind speed, air quantity cannot Measurement accuracies.And the pressure loss of some measurement mechanism is very large, long-time running blower fan power consumption increases, and energy-saving effect is poor.Moreover, some wind speed, apparatus for measuring air quantity installation requirement are high, and the front and back straight length of its requirement is longer, cannot meet in many occasions.And large for duct cross-section, the place that flow field is inhomogeneous, adopts some wind speed, apparatus for measuring air quantity, cannot measure exactly mean wind speed, air quantity in pipeline.
Summary of the invention
The purpose of this utility model is the deficiency existing for prior art, provide a kind of rectifier type total cross-section multiple spot from deashing airduct flow measurement device, comprise pressure difference transmitter and some measuring sondes, in the vertical pipeline section of the malleation side pressure tappings of described measuring sonde, be provided with from deashing rod with in the vertical pipeline section of suction side pressure tappings, should can be in airduct do random swing under the impact of air-flow from deashing rod, and the malleation of each measuring sonde is surveyed with malleation and is surveyed and be connected, suction side is connected with suction side, entirety is fishing net shaped structure, and just, after the signal that negative pressure is surveyed gathers separately, drawing a total pressure guiding pipe is connected with poor transmitter.
In the utility model, in order to solve the blockage problem of measurement mechanism under Dual-Phrase Distribution of Gas olid body complex working condition, set up from deashing rod at the pressure tappings of measurement mechanism, in the vertical pipeline section of the pressure tappings of measuring sonde, set up from deashing rod, under the impact of this rod air-flow in pipe, do random swing, play from deashing effect.For whole wind trunk, the area that keeps out the wind of fishing net shaped structure is almost negligible, and therefore, its pressure loss to whole air channel fluid does not almost have, and energy-saving effect is very remarkable, and easy for installation.And determine to measure according to factors such as the size of each measuring channel size, straight length length and count, adopt the mode of total cross-section multiple spot to arrange pressure point, multiple pressure point uniform cross sections are organically fitted together, malleation side is connected with malleation side, suction side is connected with suction side, and positive and negative pressure side is respectively drawn a total pressure guiding pipe, is connected respectively with the positive and negative end of differential pressure transmitter, record the average velocity of total cross-section, then calculate air quantity.
As preferably, all horizontal in pipeline section vertical with suction side pressure tappings in the vertical pipeline section of described malleation side pressure tappings have a fixed bar, is describedly arranged on fixed bar from deashing rod.
As preferably, the utility model also comprises DC rectifier, and described DC rectifier and measuring sonde set gradually along the direction of measuring air-flow in airduct.For short especially for straight length, the situation that pipeline flow field is chaotic especially, sets up DC rectifier, measures after making air-flow become steadily after overcommutation again, has guaranteed the accuracy of measuring.
Beneficial effect: the utility model compared with prior art, there is following beneficial effect: the utility model utilizes the kinetic energy that fluid itself has to carry out from deashing anti-clogging, thoroughly solve the signal blockage problem of dust-contained airflow wind speed, apparatus for measuring air quantity, and can make the pressure loss of air channel fluid greatly less, energy-saving effect is very remarkable, and easy for installation, has adopted in addition the method for total cross-section multimetering, measurement result is accurate, and linear adjustment is good.
Brief description of the drawings
Fig. 1 is the scheme of installation from deashing rod in the utility model;
Fig. 2 is that the utility model entirety in airduct is measured connection diagram;
Fig. 3 is the location drawing of the utility model DC rectifier;
Fig. 4 is the measuring point distribution plan of embodiment 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, the present embodiment is implemented under taking technical solutions of the utility model as prerequisite, should understand these embodiment and only be not used in restriction scope of the present utility model for the utility model is described.
As shown in Figure 1 to Figure 3, a kind of rectifier type total cross-section multiple spot is from deashing airduct flow measurement device, comprise pressure difference transmitter and some measuring sondes 5, in the vertical pipeline section 1 of malleation side pressure tappings of described measuring sonde, in pipeline section 2 vertical with suction side pressure tappings, be provided with from deashing rod 3, should can be in airduct do random swing under the impact of air-flow from deashing rod 3, and the malleation of each measuring sonde 5 is surveyed with malleation and is surveyed and be connected, suction side is connected with suction side, entirety is fishing net shaped structure, and just, after the signal that negative pressure is surveyed gathers separately, drawing a total pressure guiding pipe is connected with poor transmitter.
As preferably, in the vertical pipeline section 1 of described malleation side pressure tappings, pipeline section 2 vertical with suction side pressure tappings is interior all horizontally has a fixed bar 4, is describedly arranged on fixed bar 4 from deashing rod 3.
As preferably, also comprise DC rectifier 6, described DC rectifier 6 and measuring sonde 5 set gradually along the direction of measuring air-flow in airduct.
In the utility model, do random swing from deashing rod in pipe under the impact of air-flow, guarantee pressure tappings free from dust is gathered, and plays from deashing effect.Deadweight and the thickness of rod are to determine through the experiment before dispatching from the factory, and on experiment table, draw according to the design wind speed in each airduct, the experiment of air quantity scope, and rod is too heavy too gently or too slightly too carefully all can not meet the requirements.
Embodiment 1
As shown in Figure 4, be of a size of 1600 × 1600 × 5mm for a duct cross-section, because air channel is large, straight length is short, the easy skewness of cross section wind speed.In order to ensure Measurement accuracy wind speed, air quantity, on the duct cross-section of 1600 × 1600 × 5mm, press 16 wind speed of uniform cross section multimetering principle arrangement, air measuring point, in air channel, the malleation side of 16 measuring sondes and malleation side are interconnected, suction side and suction side interconnect, and draws one group of positive and negative pressure signal to differential pressure transmitter.Then measure wind speed, air quantity.
Claims (2)
1. a rectifier type total cross-section multiple spot is from deashing airduct flow measurement device, comprise pressure difference transmitter and some measuring sondes (5), it is characterized in that: in the vertical pipeline section of malleation side pressure tappings (1) of described measuring sonde (5), in pipeline section vertical with suction side pressure tappings (2), be provided with from deashing rod (3), should can be in airduct do random swing under the impact of air-flow from deashing rod (3), and the malleation of each measuring sonde (5) is surveyed with malleation and is surveyed and be connected, suction side is connected with suction side, entirety is fishing net shaped structure, and just, after the signal that negative pressure is surveyed gathers separately, drawing a total pressure guiding pipe is connected with poor transmitter,
Measurement mechanism also comprises DC rectifier (6), and described DC rectifier (6) and measuring sonde (5) set gradually along the direction of measuring air-flow in airduct.
2. a kind of rectifier type total cross-section multiple spot according to claim 1 is from deashing airduct flow measurement device, it is characterized in that: all horizontal in pipeline section vertical with suction side pressure tappings (2) in the vertical pipeline section of described malleation side pressure tappings (1) have a fixed bar (4), be describedly arranged on fixed bar (4) from deashing rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087242.4U CN203848867U (en) | 2014-02-28 | 2014-02-28 | Rectification type total cross section multi-point self-ash-removing air duct flow measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087242.4U CN203848867U (en) | 2014-02-28 | 2014-02-28 | Rectification type total cross section multi-point self-ash-removing air duct flow measuring device |
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| Publication Number | Publication Date |
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| CN203848867U true CN203848867U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420087242.4U Expired - Lifetime CN203848867U (en) | 2014-02-28 | 2014-02-28 | Rectification type total cross section multi-point self-ash-removing air duct flow measuring device |
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| CN (1) | CN203848867U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949717A (en) * | 2015-06-29 | 2015-09-30 | 南京博沃科技发展有限公司 | Primary air flow measuring system for entrance of coal mill |
| CN106814133A (en) * | 2015-12-01 | 2017-06-09 | 中国科学院大连化学物理研究所 | A kind of acoustic array method of embedded type chimneying homogeneity of fault plane detection |
| CN107884551A (en) * | 2017-12-15 | 2018-04-06 | 贵州大学 | A kind of flux box for being used to measure Mercury in Soil |
| CN110404884A (en) * | 2019-08-01 | 2019-11-05 | 华润电力唐山丰润有限公司 | Clean method, equipment and the computer readable storage medium of apparatus for measuring air quantity |
| CN113156161A (en) * | 2021-03-15 | 2021-07-23 | 华能(广东)能源开发有限公司海门电厂 | Boiler pipeline overgrate air on-line monitoring system |
-
2014
- 2014-02-28 CN CN201420087242.4U patent/CN203848867U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949717A (en) * | 2015-06-29 | 2015-09-30 | 南京博沃科技发展有限公司 | Primary air flow measuring system for entrance of coal mill |
| CN106814133A (en) * | 2015-12-01 | 2017-06-09 | 中国科学院大连化学物理研究所 | A kind of acoustic array method of embedded type chimneying homogeneity of fault plane detection |
| CN106814133B (en) * | 2015-12-01 | 2020-01-03 | 中国科学院大连化学物理研究所 | Audio array method for detecting uniformity of airflow section of embedded pipeline |
| CN107884551A (en) * | 2017-12-15 | 2018-04-06 | 贵州大学 | A kind of flux box for being used to measure Mercury in Soil |
| CN110404884A (en) * | 2019-08-01 | 2019-11-05 | 华润电力唐山丰润有限公司 | Clean method, equipment and the computer readable storage medium of apparatus for measuring air quantity |
| CN113156161A (en) * | 2021-03-15 | 2021-07-23 | 华能(广东)能源开发有限公司海门电厂 | Boiler pipeline overgrate air on-line monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210000 Lishui Jiangsu Economic Development Zone Environmental Protection Industrial Park Patentee after: NANJING EASE ENVIRONMENT SCIENCE AND TECHNOLOGY CO.,LTD. Address before: 210000 Lishui Jiangsu Economic Development Zone Environmental Protection Industrial Park Patentee before: NANJING EASE ENVIRONMENT SUPPLY CO.,LTD. |
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| CX01 | Expiry of patent term |
Granted publication date: 20140924 |
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| CX01 | Expiry of patent term |