CN1207570C - Medium flow speed measurement sensor - Google Patents
Medium flow speed measurement sensor Download PDFInfo
- Publication number
- CN1207570C CN1207570C CN 01108076 CN01108076A CN1207570C CN 1207570 C CN1207570 C CN 1207570C CN 01108076 CN01108076 CN 01108076 CN 01108076 A CN01108076 A CN 01108076A CN 1207570 C CN1207570 C CN 1207570C
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- Prior art keywords
- pipeline
- measurement sensor
- low pressure
- medium flow
- flow speed
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- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention relates to a media flow velocity measurement sensor which comprises a pipeline passing media, high and low pressure voltage guiding bores and high and low pressure voltage guiding pipes. The media flow velocity measurement sensor is used for making a pressure difference eduction pipe for reflect media flow velocity connected with a pressure difference transmitter. The central line of the pipeline has at least one fold to alter media flow direction. The high or low pressure voltage guiding bores are all arranged at any fold angle on the pipeline wall, and the high or low pressure voltage guiding pipes are fixedly connected with the pipeline. The media flow velocity measurement sensor has the advantages of generating great pressure difference without adding any resistance element in the pipeline, high measurement precision, simple structure and convenient machining and shaping.
Description
Technical field
The present invention relates to a kind of survey sensor that is used for velocity of medium in the measuring channel.
Background technology
At present, medium flow speed measurement sensor mainly contains orifice plate shape, wedge shape, and well-known, this class sensor is the variation that utilizes the pipeline circulation area, produces pressure reduction and measures.For simplified structure, also adopt the bend survey sensor now, and the bend sensor is to utilize to flow to gradually change, produce pressure reduction and measure.The common shortcoming of the sensor is, when flow velocity is less, signal a little less than; If will obtain strong signal, resistance element must be set in pipeline, thereby resistance is increased; In the medium impurity more, when flowing velocity is low, orifice plate, wedge shape survey sensor also stop up easily.Therefore, the measuring accuracy of the sensor when hanging down flow velocity is lower.The measuring accuracy of sensor when hanging down flow velocity for increasing, people all increase corresponding component in sensor, for example Chinese patent 00202137.4 discloses a kind of " bend sensor " its bend pipe and forms the two halves bend pipe by two halves bend pipe up and down and locate by pin, and is screwed; Connecting pipe is equipped with in the interior outside of bend pipe.It only improves measuring accuracy from external factor, and does not improve measuring accuracy from promptly increasing the pressure reduction that produces in the pipeline in essence, and complex structure, and for guaranteeing the ovality of bend pipe, machine-shaping has big difficulty.
Summary of the invention
The purpose of this invention is to provide and a kind ofly need not in pipeline to increase that any resistance element can produce big pressure reduction, measuring accuracy is higher and simple in structure, machine-shaping medium flow speed measurement sensor easily.
The technical scheme that realizes the object of the invention is: a kind of medium flow speed measurement sensor, include pipeline by medium, and high and low pressure tracting pressuring hole and high and low pressure pressure guiding pipe are used for the pressure reduction fairlead of reaction medium flow velocity is connected with pressure difference transmitter; Wherein pipe centerline has a folding at least, can change MEDIA FLOW to; Described high and low pressure tracting pressuring hole all is arranged on the arbitrary knuckle of duct wall place, and described high and low pressure pressure guiding pipe is fixedlyed connected with pipeline.
Adopt the present invention of technique scheme to have positive effect: because pipe design is become polyline shaped, and any resistance element is not set in the pipeline, when medium flows through in pipeline, because the medium streamline is swerved, thereby produce bigger pressure reduction at the knuckle place, behind the pressure difference transmitter that connects therewith, can obtain extremely strong output signal, improved the measuring accuracy and the sensitivity of sensor.The easy machine-shaping of pipeline of band knuckle, so the present invention is simple in structure, cost is lower.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and Examples.
Fig. 1 is the embodiment of the invention 1 structural representation.
Fig. 2 is an A knuckle section enlarged diagram among Fig. 1.
Fig. 3 is a B knuckle section enlarged diagram among Fig. 1
Fig. 4 is the embodiment of the invention 2 structural representations.
Fig. 5 is the embodiment of the invention 3 structural representations.
Fig. 6 is the embodiment of the invention 4 structural representations.
Fig. 7 is the embodiment of the invention 5 structural representations.
Embodiment
The embodiment of the invention 1 shown in Figure 1 includes the rounded pipeline of section 1, high and low pressure tracting pressuring hole 2-1,2-2 and high and low pressure pressure guiding pipe 3-1,3-2, pipeline 1 two ends also are connected to pipe adapter 4, wherein pipeline 1 axis has three foldings to be in the shape of the letter V, low pressure tracting pressuring hole 2-2 is arranged on the duct wall first knuckle inboard, low pressure pressure guiding pipe 3-2 is fixedlyed connected with pipeline 1, and high pressure tracting pressuring hole 2-1 is arranged on duct wall second knuckle outside, and high pressure pressure guiding pipe 3-1 is fixedlyed connected with pipeline 1.Medium low pressure and high pressure arrive existing differential pressure transmitter input end by low pressure pressure guiding pipe 3-2 and high pressure pressure guiding pipe 3-1 after passing low pressure tracting pressuring hole 2-2 and high pressure tracting pressuring hole 2-1 respectively, thereby the pressure reduction that will reflect flow velocity converts electric signal to, sees Fig. 2 and Fig. 3.Enlarge behind the knuckle place and gradually in the middle of present embodiment pipeline 1 cross section is contracted to gradually, promptly before folding be contracted to the knuckle place gradually, the back folding enlarges gradually from knuckle, from and further improved pressure reduction.
The embodiment of the invention 2 structures shown in Figure 4 are similar to embodiment 1, and different is: low pressure tracting pressuring hole 2-1 is arranged on the inboard of second knuckle, and promptly high and low pressure pressure guiding pipe 3-1,3-2 are arranged on the same pipeline section.The first and the 3rd folding of V-shape conduit axis is smooth camber line transition, thereby can make channel flow field rule and even.Certainly, the also available circular arc smooth, that curvature is bigger of second folding connects to replace knuckle.
The conduit axis of the embodiment of the invention 3 shown in Figure 5 has two foldings, and high and low pressure tracting pressuring hole 2-1,2-1 are separately positioned on the outside and the inboard of first knuckle.
The conduit axis of the embodiment of the invention 4 shown in Figure 6 has a folding, and high and low pressure tracting pressuring hole 2-1,2-1 are separately positioned on the outside and the inboard of this knuckle.
Sometimes, be the measuring media temperature, an existing thermometer bulb 5 can be installed before the pipe adapter of pipeline, be used to draw the temperature survey parameter, see Fig. 7.
Pipeline transversal section among above-mentioned all embodiment of the present invention also can be rectangle or other shapes.The material that pipeline 1 adopts is carbon steel, copper, stainless steel or engineering plastics.
Claims (7)
1, a kind of medium flow speed measurement sensor, include pipeline (1), high and low pressure tracting pressuring hole (2-1,2-2) and high and low pressure pressure guiding pipe (3-1,3-2), it is characterized in that: pipeline (1) center line has a folding at least, described high and low pressure tracting pressuring hole (2-1,2-2) all is arranged on the arbitrary knuckle of duct wall place, and described high and low pressure pressure guiding pipe (3-1,3-2) is fixedlyed connected with pipeline (1).
2, medium flow speed measurement sensor according to claim 1 is characterized in that: pipeline (1) center line the best is two foldings.
3, medium flow speed measurement sensor according to claim 1 is characterized in that: pipeline (1) center line the best is the V-shape polyline shaped.
4, medium flow speed measurement sensor according to claim 3 is characterized in that: the first and the 3rd folding of V-shape pipe centerline is smooth camber line transition.
5, medium flow speed measurement sensor according to claim 1 is characterized in that: the material that pipeline (1) adopts is carbon steel, copper, stainless steel or engineering plastics.
6, medium flow speed measurement sensor according to claim 1 is characterized in that: high and low pressure tracting pressuring hole (2-1,2-2) is arranged on the same cross section of duct wall knuckle or on the different cross section.
7, medium flow speed measurement sensor according to claim 3 is characterized in that: enlarge behind the knuckle place and gradually in the middle of pipeline (1) cross section is contracted to gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01108076 CN1207570C (en) | 2001-01-22 | 2001-01-22 | Medium flow speed measurement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01108076 CN1207570C (en) | 2001-01-22 | 2001-01-22 | Medium flow speed measurement sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1367389A CN1367389A (en) | 2002-09-04 |
| CN1207570C true CN1207570C (en) | 2005-06-22 |
Family
ID=4656964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01108076 Expired - Fee Related CN1207570C (en) | 2001-01-22 | 2001-01-22 | Medium flow speed measurement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1207570C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100487460C (en) * | 2005-04-13 | 2009-05-13 | 江苏三恒科技集团有限公司 | Wind speed measuring device and mine wind speed detecting method |
| GB201503149D0 (en) | 2015-02-25 | 2015-04-08 | Dublin Inst Of Technology | A multi-directional fluid velocity measurement device (FVMD) |
| CN108362907B (en) * | 2018-05-04 | 2024-03-22 | 刘冠宏 | Fluid velocity measuring device |
-
2001
- 2001-01-22 CN CN 01108076 patent/CN1207570C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1367389A (en) | 2002-09-04 |
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| CF01 | Termination of patent right due to non-payment of annual fee |