CN207423445U - A kind of device to differential pressure pick-up correction - Google Patents
A kind of device to differential pressure pick-up correction Download PDFInfo
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- CN207423445U CN207423445U CN201721637452.6U CN201721637452U CN207423445U CN 207423445 U CN207423445 U CN 207423445U CN 201721637452 U CN201721637452 U CN 201721637452U CN 207423445 U CN207423445 U CN 207423445U
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- differential pressure
- pressure pick
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Abstract
The utility model is related to surface weather observation fields, are specifically a kind of device to differential pressure pick-up correction.Solving the wind detection sensor based on pressure vector survey wind principle cannot overcome low measuring wind speed inaccurate,The problem of sensor calibration is not convenient,Including by sense body component and base assemblies,By sense body component and base assemblies component devices housing,Eight groups of compression holes are evenly arranged on 8 directions in the range of 360 ° by sense body component,Every group of compression hole rear end connects acceptance sense pipeline,It is connected by sense pipeline by gas circuit transfer block with differential pressure pick-up,Differential pressure pick-up connection is arranged in gas circuit transfer block,Gas circuit transfer block is equipped with the connector being connected with by sense pipeline,Air in differential pressure pick-up is pooled to chamber by gas circuit transfer block and presses concentrate tube,Chamber pressure concentrate tube passes through hose and pressure correction orifice,Pressure correction interface is equipped with air inlet A and air inlet B,Air inlet A is connected with hose,Air inlet B is connected with the tracheae of calibration equipment.
Description
Technical field
The utility model is related to surface weather observation fields, are specifically a kind of device to differential pressure pick-up correction.
Background technology
Pressure vector wind detection method is World Meteorological Organization（WMO）The update wind detection method of recommendation, based on this method
Instrument for wind measurement have the precedent of application in meteorological observation field, but, differential pressure pick-up correction side inaccurate there are low measuring wind speed
The problems such as method is complicated.Previous design is connected to using cylindrical structure, front and rear compression hole on differential pressure pick-up, passes through sense
Wind speed and direction is calculated by the pressure differential on 180 ° of directions.
It is limited by Reynolds number, there are upper limit values for cylinder diameter（Body diameter maximum when measuring 0~60m/s of wind speed
For 26mm）, more than the limit value cylinder back side flow-disturbing will be caused to significantly increase, and make differential pressure on cylinder front-rear direction unstable, it can not
Realize that differential pressure surveys wind.Previous design is the perforate on cylindrical surface, sensor is installed inside cylinder, since column diameter is limited
Cause inside it can not design and installation sand prevention waterproof, the components such as anti-freeze, the environmental suitability for causing wind detection sensor is not strong, nothing
Method uses in harsh environments.
The content of the invention
The utility model cannot overcome low measuring wind speed to solve to survey the wind detection sensor of wind principle based on pressure vector
The problem of inaccuracy, sensor calibration is not convenient, provides a kind of device to differential pressure pick-up correction.
The utility model takes following technical scheme：A kind of device to differential pressure pick-up correction, including by sense body component
And base assemblies, by sense body component and base assemblies component devices housing, by sense body component in the range of 360 ° on 8 directions
Eight groups of compression holes of even arrangement, every group of compression hole rear end connect acceptance sense pipeline, are sensed by sense pipeline by gas circuit transfer block and differential pressure
Device connects, and differential pressure pick-up connection is arranged in gas circuit transfer block, and gas circuit transfer block is connected equipped with what is be connected with by sense pipeline
Mouthful, the air in differential pressure pick-up is pooled to chamber by gas circuit transfer block and presses concentrate tube, and chamber pressure concentrate tube passes through hose and pressure
Correction interface connects, and pressure correction interface is equipped with air inlet A and air inlet B, and air inlet A is connected with hose, air inlet B and calibration
The tracheae of equipment is connected.
Further, differential pressure pick-up includes wide range differential pressure pick-up and small-range differential pressure pick-up, wide range differential pressure
The air inlet of both sensor and small-range differential pressure pick-up communicates.
Further, wide range differential pressure pick-up range is -4000Pa~+4000Pa, and precision 0.25% corresponds to wind speed model
It encloses for 20~75m/s；The small-range differential pressure pick-up range is -249Pa~+249Pa, and precision 0.25% corresponds to wind speed model
It encloses for 0~20m/s.
Compared with prior art, the utility model measures wind pressure using the differential pressure pick-up of two amounts journey, can exist respectively
High wind speed, low wind speed section ensure pressure measurement precision, realize low wind speed high-acruracy survey, while take into account raising and survey wind range limit.It is logical
Internal pressure correction circuit design is crossed, is connected to pressure correction interface, only needs to split out in correction mouth in calibration, connection is special
Mark compared with equipment, you can easily realize differential pressure pick-up mark compared with.
Description of the drawings
Fig. 1 is the utility model outline drawing；
Fig. 2 is the new cut-away view of this practicality；
Fig. 3 is gas circuit transfer block structure diagram；
Fig. 4 is pressure correction interface structure schematic diagram；
1- is by sense body component, 2- base assemblies, 3- compressions hole, 4- gas circuit transfer blocks, 5- chambers pressure concentrate tube, 6- air inlets in figure
Mouth A, 7- air inlets B, 8- pressure correction interface, 9- connectors.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
As shown in Figure 1, 2, a kind of device to differential pressure pick-up correction, including by sense body component 1 and base assemblies 2, by
Feel body component 1 and 2 component devices housing of base assemblies, eight groups are evenly arranged on 8 directions in the range of 360 ° by sense body component 1
Compression hole 3,3 rear end of every group of compression hole connect acceptance sense pipeline, are connected by sense pipeline by gas circuit transfer block 4 with differential pressure pick-up,
Differential pressure pick-up connection is arranged in gas circuit transfer block 4, and gas circuit transfer block 4 is equipped with the connector 9 being connected with by sense pipeline, poor
Air in pressure sensor is pooled to chamber by gas circuit transfer block 4 and presses concentrate tube 5, and chamber pressure concentrate tube 5 passes through hose and pressure school
Positive interface 8 connects, and pressure correction interface 8 is equipped with air inlet A6 and air inlet B7（See figure）, air inlet A6 is connected with hose, air inlet
Mouth B7 is connected with the tracheae of calibration equipment.When device is in normal operating conditions, pressure correction interface air inlet B is hanging, with
Device inner cavity communicates；When device is in calibration state, pressure correction interface trip bolt is removed, air inlet B and calibration equipment
Tracheae be connected, fixed value air pressure is given by calibration equipment, mark compared with equipment acquisition set-point with by mark sensor output value,
The two matched curve is obtained by analysis, which is exported by serial ports to being marked compared with sensor, realizes differential pressure sensing
Device calibration function.
Differential pressure pick-up includes wide range differential pressure pick-up and small-range differential pressure pick-up, wide range differential pressure pick-up and small
The air inlet of both range differential pressure pick-ups communicates.By gas circuit transfer block, an air inlet of each group of differential pressure pick-up with
Device is interlinked to the outside, another air inlet is communicated with the inner cavity of device, and P is denoted as pressure difference outside measuring device intracavitaryDifference, 1 mouthful
Large and small range differential pressure pick-up surveys differential pressure value and is denoted as P respectivelyDifference is big by 1And PDifference is small by 1, and so on.
Wide range differential pressure pick-up range is -4000Pa~+4000Pa, precision 0.25%, corresponding wind speed range for 20~
75m/s；The small-range differential pressure pick-up range is -249Pa~+249Pa, precision 0.25%, corresponding wind speed range for 0~
20m/s。
Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art
Say, can still modify to the technical solution recorded in foregoing embodiments or to which part technical characteristic into
Row equivalent substitution, within the spirit and principle of the utility model, any modifications, equivalent replacements and improvements are made should all
It is included within the scope of protection of this utility model.
Claims (3)
1. a kind of device to differential pressure pick-up correction, it is characterised in that：Including by sense body component（1）And base assemblies（2）, by
Feel body component（1）With base assemblies（2）Component devices housing, by sense body component（1）The uniform cloth on 8 directions in the range of 360 °
Put eight groups of compression holes（3）, every group of compression hole（3）Rear end connects acceptance sense pipeline, is passed through gas circuit transfer block by sense pipeline（4）With differential pressure
Sensor connects, and differential pressure pick-up connection is arranged on gas circuit transfer block（4）It is interior, gas circuit transfer block（4）Be equipped with by sense pipeline
The connector of connection（9）, the air in differential pressure pick-up passes through gas circuit transfer block（4）It is pooled to chamber pressure concentrate tube（5）, chamber pressure collection
Middle pipe（5）Pass through hose and pressure correction interface（8）Connection, pressure correction interface（8）Equipped with air inlet A（6）With air inlet B
（7）, air inlet A（6）It is connected with hose, air inlet B（7）It is connected with the tracheae of calibration equipment.
2. the device according to claim 1 to differential pressure pick-up correction, it is characterised in that：Differential pressure pick-up includes a large amount of
The air inlet of both path difference pressure sensor and small-range differential pressure pick-up, wide range differential pressure pick-up and small-range differential pressure pick-up
It communicates.
3. the device according to claim 2 to differential pressure pick-up correction, it is characterised in that：The wide range differential pressure passes
Sensor range is -4000Pa~+4000Pa, and precision 0.25%, corresponding wind speed range is 20~75m/s；The small-range differential pressure
Transducer range is -249Pa~+249Pa, and precision 0.25%, corresponding wind speed range is 0~20m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721637452.6U CN207423445U (en) | 2017-11-30 | 2017-11-30 | A kind of device to differential pressure pick-up correction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721637452.6U CN207423445U (en) | 2017-11-30 | 2017-11-30 | A kind of device to differential pressure pick-up correction |
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| Publication Number | Publication Date |
|---|---|
| CN207423445U true CN207423445U (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721637452.6U Active CN207423445U (en) | 2017-11-30 | 2017-11-30 | A kind of device to differential pressure pick-up correction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617915A (en) * | 2019-09-29 | 2019-12-27 | 重庆大学 | Calibration system and method for coal and gas outburst dynamic pressure sensor |
-
2017
- 2017-11-30 CN CN201721637452.6U patent/CN207423445U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617915A (en) * | 2019-09-29 | 2019-12-27 | 重庆大学 | Calibration system and method for coal and gas outburst dynamic pressure sensor |
| CN110617915B (en) * | 2019-09-29 | 2021-11-02 | 重庆大学 | Calibration system and method for coal and gas outburst dynamic pressure sensor |
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