CN1696617A - Even speed tube of flow sensor - Google Patents
Even speed tube of flow sensor Download PDFInfo
- Publication number
- CN1696617A CN1696617A CN 200510018854 CN200510018854A CN1696617A CN 1696617 A CN1696617 A CN 1696617A CN 200510018854 CN200510018854 CN 200510018854 CN 200510018854 A CN200510018854 A CN 200510018854A CN 1696617 A CN1696617 A CN 1696617A
- Authority
- CN
- China
- Prior art keywords
- pressure
- even speed
- speed tube
- tube
- pressure port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
A uniform velocity tube of flow rate transducer consists of high pressure sampling hole at flow receiving surface, low pressure sampling hole at side surface between flow receiving surface and flow departing surface which are built on tube wall of the uniform velocity tube . It features that the said tube section is prepared to be a bullet head form so fluid is splited along two side surfaces of said tube section formed as bullet head to make a flow coefficient relatively stable when fluid flows through the tube.
Description
Technical field
The present invention relates to flow sensor, particularly the even speed tube of flow sensor.
Background technology
In the process of flow measurement, because the complexity of measured medium, measuring method also is varied, has also just occurred various flow sensors based on the different measuring principle thus.Flow sensor can be divided into differential pressure type, float-type, positive displacement, turbine type etc. by measuring method and structure.
For the sensor of measuring fluid flow in the closed conduit, it comprises an even speed tube probe that inserts in the closed conduit, and ducted even speed tube has a face towards fluid (fluoran stream surface) and one face of fluid (lee side) dorsad.Even speed tube has a series of high pressure pressure ports that distribute by rule on fluoran stream surface, at lee side a series of low pressure pressure ports that distribute by rule are arranged; The pressure at high and low pressure pressure port place is sent to the high and low pressure chamber of probe by the high and low pressure passage in the even speed tube with pressure respectively, and flow sensor can be measured the flow of fluid in the closed conduit according to the pressure differential in the high and low pressure chamber.
Existing even speed tube, its xsect is generally circle, and the low pressure pressure port is all opened on the tube wall of the lee side of even speed tube.During even speed tube work, the detected fluid medium can form whirlpool at the rear of even speed tube, and whirlpool can make the particle in the detected fluid medium enter in the low pressure pressure port of even speed tube, very easily causes the low pressure pressure port to stop up, and has a strong impact on the precision of flow sensor.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of even speed tube with flow sensor of choke preventing function, the intensity height.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
A kind of even speed tube of flow sensor has high pressure pressure port and low pressure pressure port on the tube wall of even speed tube, be provided with high-pressure channel and low-pressure channel in the even speed tube, and high pressure pressure port and low pressure pressure port are communicated with high-pressure channel and low-pressure channel respectively; Have fluoran stream surface and lee side on the tube wall of even speed tube, the high pressure pressure port is opened on the fluoran stream surface of even speed tube; The xsect of even speed tube is bullet-headed, and the low pressure pressure port is opened on the side between even speed tube fluoran stream surface and the lee side.
In the such scheme, the low pressure pressure port is opened the close lee side place in the even speed tube side.
In the such scheme, all have the low pressure pressure port on the two sides of even speed tube.
In the such scheme, high pressure pressure port and low pressure pressure port stagger mutually in the even speed tube cross-sectional direction.
The principle of work of even speed tube of the present invention is: when fluid flow through even speed tube, fluid separated along the two sides of sub warhead xsect even speed tube, will occur a metastable fluid coefficient like this.Fluid forms accelerating sections in the both sides of even speed tube, particle in the detected fluid medium washes away fast at this section quilt, can't enter in the low pressure pressure port at this section place, and low pressure pressure port possibility of jamming is reduced greatly, thereby guaranteed the precision of flow sensor, generally do not needed to safeguard.
Even speed tube of the present invention compared with prior art also has the following advantages:
1, because the xsect of even speed tube is bullet-headed, increased the intensity of even speed tube, reduced the impulsive force of fluid, reduced the possibility of pressure port place fracture, thereby improved the measurement upper limit, be suitable for flow, pressure measurement of fluid flow bigger than normal even speed tube.
2, the low pressure pressure port is opened the close lee side place in the even speed tube side, can increase the differential pressure value of flow probe, improves measuring accuracy.
3, high pressure pressure port and low pressure pressure port stagger mutually in the even speed tube cross-sectional direction, can further increase the differential pressure value of flow probe, improve measured value and precision, have reduced measurement lower limit, are suitable for flow velocity, pressure measurement of fluid flow less than normal.
4, all have the low pressure pressure port on the two sides of even speed tube, can improve measuring accuracy and stability.
Description of drawings
Fig. 1 is the front view of the embodiment of the invention 1
Fig. 2 is the left view of the embodiment of the invention 1
Fig. 3 is the right view of the embodiment of the invention 1
Fig. 4 is the upward view of the embodiment of the invention 1
Fig. 5 is the A-A cut-open view of Fig. 1
Fig. 6 is the cross-sectional view of the embodiment of the invention 2
Fig. 7 is the cross-sectional view of the embodiment of the invention 3
Fig. 8 is the structural representation of the embodiment of the invention 4
Fig. 9 is the structural representation of the embodiment of the invention 5
Embodiment
The embodiment of the invention 1 shown in Fig. 1,2,3,4,5, have high pressure pressure port 3 and low pressure pressure port 4 on the tube wall of even speed tube 5, be provided with high-pressure channel 1 and low-pressure channel 2 in the even speed tube 5, high pressure pressure port 3 and low pressure pressure port 4 are communicated with high-pressure channel 1 and low-pressure channel 2 respectively; Have fluoran stream surface and lee side on the tube wall of even speed tube 5, high pressure pressure port 3 is opened on the fluoran stream surface of even speed tube 5.The xsect of even speed tube 5 is bullet-headed; Low pressure pressure port 4 is opened on the two sides between even speed tube 5 fluoran stream surfaces and the lee side, and low pressure pressure port 4 is opened the close lee side place in even speed tube 5 sides.
Fig. 6,7 is even speed tube 5 cross-sectional views of the embodiment of the invention 2,3.
The embodiment of the invention 4,5 shown in Fig. 8,9, high pressure pressure port 3 on the tube wall of even speed tube 5 and low pressure pressure port 4 stagger mutually in even speed tube 5 cross-sectional direction.
Claims (4)
1, a kind of even speed tube of flow sensor, have high pressure pressure port (3) and low pressure pressure port (4) on the tube wall of even speed tube (5), be provided with high-pressure channel (1) and low-pressure channel (2) in the even speed tube (5), high pressure pressure port (3) and low pressure pressure port (4) are communicated with high-pressure channel (1) and low-pressure channel (2) respectively; Have fluoran stream surface and lee side on the tube wall of even speed tube (5), high pressure pressure port (3) is opened on the fluoran stream surface of even speed tube (5); It is characterized in that: the xsect of even speed tube (5) is bullet-headed, and low pressure pressure port (4) is opened on the side between even speed tube (5) fluoran stream surface and the lee side.
2, even speed tube as claimed in claim 1 is characterized in that: low pressure pressure port (4) is opened the close lee side place in even speed tube (5) side.
3, even speed tube as claimed in claim 1 is characterized in that: all have low pressure pressure port (4) on the two sides of even speed tube (5).
4, even speed tube as claimed in claim 1 is characterized in that: high pressure pressure port (3) and low pressure pressure port (4) stagger mutually in even speed tube (5) cross-sectional direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510018854 CN1696617A (en) | 2005-06-06 | 2005-06-06 | Even speed tube of flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510018854 CN1696617A (en) | 2005-06-06 | 2005-06-06 | Even speed tube of flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1696617A true CN1696617A (en) | 2005-11-16 |
Family
ID=35349442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510018854 Pending CN1696617A (en) | 2005-06-06 | 2005-06-06 | Even speed tube of flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1696617A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252715A (en) * | 2011-04-15 | 2011-11-23 | 王荣虎 | Europa sensor and flow measurement control system |
| CN102721443A (en) * | 2012-05-31 | 2012-10-10 | 上海博卡实业有限公司 | Water drop type constant speed pipe flow measuring device and utilized constant speed pipe flow measuring probe |
| CN105546603A (en) * | 2015-09-17 | 2016-05-04 | 宁波方太厨具有限公司 | Range hood and wind speed and wind pressure sensor for range hood |
| WO2018120747A1 (en) * | 2016-12-30 | 2018-07-05 | 北京金风科创风电设备有限公司 | Electrical connector, fluid state test device, and fluid heat exchange system |
| US10641786B2 (en) | 2016-12-30 | 2020-05-05 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Fluid test device with electrical connector having electric heating tube for heat exchange process |
| CN113324601A (en) * | 2021-04-23 | 2021-08-31 | 中国北方车辆研究所 | Vehicle-mounted embedded liquid flowmeter |
-
2005
- 2005-06-06 CN CN 200510018854 patent/CN1696617A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252715A (en) * | 2011-04-15 | 2011-11-23 | 王荣虎 | Europa sensor and flow measurement control system |
| CN102721443A (en) * | 2012-05-31 | 2012-10-10 | 上海博卡实业有限公司 | Water drop type constant speed pipe flow measuring device and utilized constant speed pipe flow measuring probe |
| CN102721443B (en) * | 2012-05-31 | 2014-01-01 | 上海博卡实业有限公司 | Water drop type constant speed pipe flow measuring device and utilized constant speed pipe flow measuring probe |
| CN105546603A (en) * | 2015-09-17 | 2016-05-04 | 宁波方太厨具有限公司 | Range hood and wind speed and wind pressure sensor for range hood |
| CN105546603B (en) * | 2015-09-17 | 2018-08-07 | 宁波方太厨具有限公司 | Wind speed and pressure sensor and range hood for range hood |
| WO2018120747A1 (en) * | 2016-12-30 | 2018-07-05 | 北京金风科创风电设备有限公司 | Electrical connector, fluid state test device, and fluid heat exchange system |
| US10641786B2 (en) | 2016-12-30 | 2020-05-05 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Fluid test device with electrical connector having electric heating tube for heat exchange process |
| CN113324601A (en) * | 2021-04-23 | 2021-08-31 | 中国北方车辆研究所 | Vehicle-mounted embedded liquid flowmeter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1696617A (en) | Even speed tube of flow sensor | |
| JP3621490B2 (en) | Mass air flow sensor housing | |
| CN2852062Y (en) | Apparatus for real-time online measurement of water velocity and depth | |
| CN105716788A (en) | Three-hole transonic speed pressure probe | |
| CN108868615B (en) | Hydraulic oscillator pulse pressure generating device | |
| CN102650566A (en) | Experimental device of interaction of horizontal supercavity and free surface | |
| CN2795820Y (en) | Speed equalizing tube of flow sensor | |
| CN202370463U (en) | Pressure control throttling pipe manifold | |
| CN109163101A (en) | A kind of implementation method for the exhaust capacity improving air inlet and exhaust valve | |
| CN106404340A (en) | Wind tunnel collecting port | |
| CN1321244A (en) | Noise reducig differential pressure measurement probe | |
| CN1217159C (en) | Device for measuring at least one parameter of flowing medium | |
| CN2697420Y (en) | Pre-guiding type water pressure overflow valve | |
| CN1696510A (en) | Combined type valve with double fluid channels in use for reciprocating pump | |
| CN101050973A (en) | (MTC) Flow sensor with flow signal amplifying function | |
| CN1959130A (en) | Hydraulic pressure servo valve | |
| DE102008042153A1 (en) | Sensor arrangement for determining a parameter of a fluid medium | |
| CN2821533Y (en) | Flow saving stable flow type vortex street flowmeter | |
| CN102858499B (en) | For rock drill and the use thereof of the generation and diffusion that hinder cavitation bubble | |
| CN201508202U (en) | Enhanced velocity-averaging tube flow sensor | |
| CN2878822Y (en) | Intelligent self-control valve | |
| CN2777507Y (en) | Wilba flow-meter | |
| CN2791301Y (en) | Dual-flow-way combined valve for reciprocating pump | |
| CN1908432A (en) | Two-way valve free pump | |
| CN210321841U (en) | Floating ball vortex street correlation type optical fiber flow sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |