CN206114017U - Multiple spot matrix flow measuring device - Google Patents
Multiple spot matrix flow measuring device Download PDFInfo
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- CN206114017U CN206114017U CN201620614303.7U CN201620614303U CN206114017U CN 206114017 U CN206114017 U CN 206114017U CN 201620614303 U CN201620614303 U CN 201620614303U CN 206114017 U CN206114017 U CN 206114017U
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- pitot tube
- flow
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Abstract
The utility model provides a multiple spot matrix flow measuring device, its include a cavity (1) cavity (1) lateral wall sets up a plurality of measurements mouthful (2), in cavity (1) and every it sets up one pitot tube (3) to measure mouthful (2 a) correspondence, set up a plurality of gas flow rate sensor in pitot tube (3), gas flow rate sensor is connected with blender (4), blender (4) are connected to feed tank (5). The utility model provides a multiple spot matrix flow measuring device adopts independent differential pressure to calculate the velocity of flow and flow, and the back that finishes get into to be mixed total feed tank and is made even and all calculate, compares with ordinary pitot tube current meter, and measured data is even, accurate, stable, reliable, the utility model discloses simple to operate goes on when need not shut down group or overhaul, can install or dismantle any time, can satisfy the straight tube section and not reach the occasion operation requirement that requirement, environmental protection were had relatively high expectations.
Description
Technical field
This utility model is related to gas flow measurement technical field, specifically, is related to many dot matrix flow measurement devices.
Background technology
Gas flow in measurement pipeline, preferable state are that inner-walls of duct is very bright and clean and have longer straight length.But
Be boiler of power plant wind and smoke road it is hardly possible have so preferable condition, gas in pipelines flow field is mostly uneven point
, there is turbulent flow and eddy flow in cloth, affect the accuracy of measurement.
The method of presently preferred solution is to arrange multiple measurement points in air channel, and the mean flow rate for taking each measurement point is reduced
The impact of error, this utility model are based on this and design.
Utility model content
In order to solve to measure the shortcoming of gas flow at present, this utility model provides a kind of many dot matrix flow measurement dresses
Put, its specific technical scheme is as follows：
Many dot matrix flow measurement devices, which includes multiple measuring units are arranged in a cavity 1, the cavity 1, described every
Individual measuring unit includes one group of measurement mouth 2, the interior skin support connected with measurement mouth 2 each described of cavity 1 for being arranged at 1 side wall of cavity
Pipe 3, arranges multiple air flow rate sensors in the pitot tube 3；The air flow rate sensor is connected with blender 4；Mixing
Device 4 is connected to flow case 5.
Further, described each measuring unit includes at least two groups measurement mouths 2, per group of measurement mouth 2 include import and
Outlet.
Preferably, the measurement mouth 2 of 1 side wall of the cavity is distributed with grid array, that is, measure mouth 2 in cavity 1
On some sides from top to bottom/be uniformly distributed from left to right.
Many dot matrix flow measurement devices provided by the utility model, with advantages below：
First：Independent differential pressure carries out calculating flow velocity and flow, and mixing total flow case is entered after finishing to carry out taking average calculating,
Compared with common pitot tube current meter, measurement data is uniform, accurate, stable, reliable；
Second：Multichannel pitot tube road is set, per road pitot tube road independent back flushing, pipeline blockage is prevented, with mechanical type blowback
Compare, source of the gas blowback dust laying dust is few.
3rd：This utility model is easy for installation, carries out, can install any time or tear open when need not shut down group or overhaul
Unload, straight length can be met and do not reach the higher occasion use requirement of requirement, environmental requirement.
Description of the drawings
Cross-sectional views of the Fig. 1 for many dot matrix flow measurement devices of this utility model.
Fig. 2 is measurement point distribution grid schematic diagram in this utility model embodiment 1.
Label in figure：
1：Cavity；2：Measurement mouth；3：Pitot tube；4：Blender；5：Flow case.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment makees further details of to many dot matrix flow measurement devices of the present utility model
Explanation.
Many dot matrix flow measurement devices of the present utility model are based on S type Pitot tube measuring principles, according to ISO3966:
1997《The measurement of fluid flow in closed conduct/using the speed-area-method of Pitot static tube》What international standard manufactured and designed.
Measurement apparatus are arranged on pipeline, when there is air current flow in pipeline, and gas shock is received in pitot tube windward side, in air-flow herein
Kinetic energy is converted into pressure energy, thus windward side overpressure is higher, and its pressure is referred to as " total head ", and leeward side is not due to being rushed by air-flow
Hit, the pressure in its pipe is the static pressure in airduct, its pressure is referred to as the difference of " static pressure ", total head and static pressure and is referred to as differential pressure, and which is big
Little relevant with wind speed in pipeline, wind speed is bigger, and differential pressure is bigger；Wind speed is less, and differential pressure is less,
With reference to Fig. 1, many dot matrix flow measurement devices, if which includes that a cavity 1,1 side wall of the cavity arrange dry measure
Mouth 2, is correspondingly arranged a pitot tube 3 with each described measurement mouth 2 in cavity 1, the setting independent back flushing mechanism per road pitot tube road,
Prevent pipeline blockage.Multiple air flow rate sensors are set in the pitot tube 3；The air flow rate sensor and blender 4
Connection；Blender 4 is connected to flow case 5.
In one preferred scheme, each measuring unit includes at least two groups measurement mouths 2, and per group of measurement mouth 2 includes
Inlet and outlet.
Many dot matrix flow measurement devices of the present utility model arrange one or more measurement pitot tube pipeline, per Zhi Pituo
Pipe includes multiple air flow rate sensors with choke preventing function, and each sensor is to measure rectifier tube and be coaxially mounted to
Throttling element and corresponding pressure tappings composition in measurement rectifier tube, package unit carry out air quantity survey equivalent to the array that tests the speed is constituted
Amount.When air channel is inserted into branched measurement pitot tube, the total head that pitot tube is exported is together in parallel with total head, static pressure and static pressure,
The mean flow rate of each measuring point of duct cross-section can be accurately measured just.This is meant that if as often as possible arranging measurement in air channel
Pitot tube, per measurement a pitot tube as often as possible configure flow sensor, it is possible to avoid in air channel as eddy flow, turbulent flow are caused
Flow field it is uneven to the impact that brings of measurement, reduce measurement error.
Embodiment 1
In the present embodiment, the measurement mouth 2 of 1 side wall of cavity is distributed with grid array, if measuring dry side of the mouth 2 in cavity 1
On face from top to bottom/be uniformly distributed from left to right.Concrete distribution is as shown in Figure 2.By cavity 1 after base circumference expansion, measurement
Mouthfuls 2 distribution form for 5 × 5 matrix, measurement data mixing total flow case enters by the flow sensor in corresponding pitot tube
Row is calculated, and compared with common pitot tube current meter, measurement data is uniform, accurate, stable, reliable.
The foregoing is only better embodiment of the present utility model, it is all to be made according to this utility model claim
Impartial change and modification, should all belong to the covering scope of this utility model patent.
Claims (3)
1. dot matrix flow measurement device more than, it is characterised in that：Which includes a cavity（1）, the cavity（1）It is interior that multiple surveys are set
Amount unit, described each measuring unit include being arranged at cavity（1）One group of measurement mouth of side wall（2）, cavity（1）Interior and each institute
State measurement mouth（2）The pitot tube of connection（3）, the pitot tube（3）It is interior that multiple air flow rate sensors are set；The gas flow rate
Sensor and blender（4）Connection；Blender（4）It is connected to flow case（5）.
2. many dot matrix flow measurement devices according to claim 1, it is characterised in that：Described each measuring unit includes
At least two groups measurement mouths（2）, per group of measurement mouth（2）Including inlet and outlet.
3. many dot matrix flow measurement devices according to claim 1, it is characterised in that：The cavity（1）The survey of side wall
Amount mouth（2）It is distributed with grid array, that is, measures mouth（2）In cavity（1）Some sides on from top to bottom/uniform from left to right point
Cloth.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016201206152 | 2016-02-15 | ||
| CN201620120615 | 2016-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114017U true CN206114017U (en) | 2017-04-19 |
Family
ID=58510596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620614303.7U Expired - Fee Related CN206114017U (en) | 2016-02-15 | 2016-06-22 | Multiple spot matrix flow measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206114017U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631648A (en) * | 2019-11-14 | 2019-12-31 | 上海权宥环保科技有限公司 | Sensor combined Pitotbar flowmeter |
| CN112880759A (en) * | 2021-01-20 | 2021-06-01 | 中国核动力研究设计院 | Ultrasonic wave type gas flow detection device for nuclear power chimney |
| CN113125799A (en) * | 2021-04-19 | 2021-07-16 | 重庆地格科技有限责任公司 | Intelligent anemorumbometer based on pitot tube |
| CN115711632A (en) * | 2022-10-19 | 2023-02-24 | 西安京兆电力科技有限公司 | Method for determining data average wind speed value point position in non-uniform wind field air duct cross section |
-
2016
- 2016-06-22 CN CN201620614303.7U patent/CN206114017U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631648A (en) * | 2019-11-14 | 2019-12-31 | 上海权宥环保科技有限公司 | Sensor combined Pitotbar flowmeter |
| CN112880759A (en) * | 2021-01-20 | 2021-06-01 | 中国核动力研究设计院 | Ultrasonic wave type gas flow detection device for nuclear power chimney |
| CN113125799A (en) * | 2021-04-19 | 2021-07-16 | 重庆地格科技有限责任公司 | Intelligent anemorumbometer based on pitot tube |
| CN113125799B (en) * | 2021-04-19 | 2024-01-26 | 重庆地格科技有限责任公司 | Intelligent anemograph based on pitot tube |
| CN115711632A (en) * | 2022-10-19 | 2023-02-24 | 西安京兆电力科技有限公司 | Method for determining data average wind speed value point position in non-uniform wind field air duct cross section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20210622 |