CN201096499Y - Insertion type multi-point uniform speed flow measuring device - Google Patents
Insertion type multi-point uniform speed flow measuring device Download PDFInfo
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- CN201096499Y CN201096499Y CNU2007200310662U CN200720031066U CN201096499Y CN 201096499 Y CN201096499 Y CN 201096499Y CN U2007200310662 U CNU2007200310662 U CN U2007200310662U CN 200720031066 U CN200720031066 U CN 200720031066U CN 201096499 Y CN201096499 Y CN 201096499Y
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- flow measurement
- mounting flange
- pressure
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- uniform speed
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- 230000037431 insertion Effects 0.000 title 1
- 238000003780 insertion Methods 0.000 title 1
- 238000005259 measurement Methods 0.000 claims abstract description 63
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000012856 packing Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a plug-in type multipoint uniform velocity flow measurement device, which solves the difficult problem of flow measurement of large and small pipelines, and has rather big differential pressure signals, excellent anti-blocking performance and rather small pressure loss as well as being capable of multipoint pressure obtaining, and the flow measurement device can also output rather stable differential pressure signals. The utility model comprises a plurality of parallel flow measurement units, the flow measurement units are connected with a mounting flange by a connecting arm, high and low pressure obtaining pressure cavities of the flow measurement units are connected in series and output from a pressure guiding pipe, and are fixed with the measured pipelines through the mounting flange, the flow measurement units are two or more than two flow measurement units, each flow measurement unit is a combined body formed by one of throttling elements such as an orifice plate with the appearance being the surface of revolution, a nozzle, a Venturi tube, a Venturi nozzle, a pyramidal throttling device and a dual-Venturi tube or random throttling elements, and the numeric area of the tilt angle Alpha of the connecting arm is 70-90 degrees.
Description
One, technical field:
The utility model relates to a kind of flow measurement device, especially relates to a kind of plug-in type multiple spot uniform speed flow measurement mechanism, and it is mainly used in the measurement of fluid flow in the large and medium-sized pipeline (pipe or square tube).
Two, background technology:
At present, particularly present popular Circulating Fluidized Bed Boiler with high environmental protection and high energy efficiency and the various pulverized coal firing boiler of steam boiler in the fuel-burning power plant, need measure the air mass flow of a large amount of large and medium-sized pipeline (and measuring the straight length deficiency), in metering, have following problem:
1. when large and medium-sized piping erection, measure straight length and be difficult to satisfy the measurement requirement of common discharge meter, and use all kinds of single-point type flow measurement devices just can't guarantee its measuring accuracy; And flowmeters such as operable wing and xsect are because very difficulty is installed, safeguarded to the volume heaviness.
2. on-the-spot crust class flowmeter (as Annubar, Verabar, Delta crust etc.) commonly used at present, though the pressure loss is little, easy for installation, its malleation pressure port stops up easily, in addition output signal less, can not be used for low flow velocity metering.
Three, utility model content:
The utility model is in order to solve the weak point in the above-mentioned background technology, a kind of plug-in type multiple spot uniform speed flow measurement mechanism is provided, it has solved the difficult problem that large and medium-sized pipeline flow is measured, both had bigger differential pressure signal, good anti-blocking performance, the less pressure loss, again can the multiple spot pressure, can also export a more stable differential pressure signal.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of plug-in type multiple spot uniform speed flow measurement mechanism, its special character is: comprise a plurality of flow measurement unit parallel to each other, the flow measurement unit is connected with mounting flange by connecting support arm, the back is connected mutually by pressure guiding pipe output in the high and low pressure pressure chamber of flow measurement unit, and fixes by mounting flange and tested pipeline.
The flow measurement unit is two or more flow measurements unit.
Each flow measurement unit is to be a kind of in the restricting elements such as orifice plate, nozzle, Venturi tube, Venturi nozzle, conical throttling gear, double-venturi tube of the surface of revolution or the assembly that constitutes of restricting element arbitrarily wherein by profile.
The span that connects the inclination alpha of support arm is 70～90 °.
The flow measurement unit welds together by the packing washer that is connected with mounting flange and mounting flange and tested pipeline.
Compared with prior art, the advantage and the effect that the utlity model has are as follows:
1. the utility model utilizes the measuring characteristic of the flow apparatus of various ways, makes whole flow measurement device can produce a bigger differential pressure signal, the sensitivity that has improved system.
2. the utility model is a kind of novel flow measurement device that is combined by a plurality of flow measurement devices, and many covers can be installed in the large scale pipeline.Therefore, it is that the large pipeline flow is accurately measured one of preferred plan.The utility model adopts multiple spot average rate measurement scheme, has solved the inaccurate difficult problem of large scale pipeline spot measurement.
3. the utility model has solved the measurement difficult problem of large and medium-sized pipeline flow, and can adapt to pipe diameter is the above various occasions of 600mm.Compare with the crust class flow measurement device of total pressure type, this device has advantages such as differential pressure output is big, and anti-blocking performance is good.Integral body still adopts plug in construction design, makes it to become one and installs and safeguard very convenient, and straight length is required very low flow metering product, and its series of products can satisfy the flow metering of 600mm～10000mm pipeline.
Four, description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is the structural representation of one of them embodiment of the utility model.
Among the figure, the 1-mounting flange, the 2-mounting flange, the 3-pressure guiding pipe, the 4-packing washer, first flow measurement unit of 5-, second flow measurement unit of 6-, 7-connects support arm, i flow measurement unit of 8-.
Five, embodiment:
The utility model is mainly used in the flow metering and the test of large and medium-sized pipeline, is based on various types of flow measurement devices, two or more flow measurement unit strings is connected together, thereby constitutes a multiple spot uniform speed flow measurement mechanism.According to the line size size, one or more sets multiple spot uniform speed flow measurement mechanisms can be installed in pipeline, then high and low pressure pressure chamber separately is serially connected respectively, the flow velocity signal of the inner a plurality of diverse location measuring points of measuring channel can be gathered together like this, from an impulse pipeline, draw, reach the average effect of multi-point signal.Use two these devices of cover can satisfy the accurate measurement of the flow of general big-and-middle-sized pipeline; Use many these devices of cover to can be used for the flow measurement occasion that large pipeline does not have straight length.
Referring to Fig. 1 and Fig. 2, the utility model is by the two or more flow measurements unit that is parallel to each other, as first flow measurement unit 5, second flow measurement unit 6, an i flow measurement unit 8, by the inclination angle is that several of α (span is 70 ~ 90 °) connect support arms 7 and organically are connected together with mounting flange 2, and high and low pressure pressure chamber that will be separately connects the back mutually by pressure guiding pipe 3 outputs, welds together by the packing washer 4 that is connected with mounting flange 2 and mounting flange 1 and tested pipeline.Each flow measurement unit is to be a kind of in the restricting elements such as orifice plate, nozzle, Venturi tube, Venturi nozzle, conical throttling gear, double-venturi tube of the surface of revolution or the assembly that constitutes of restricting element arbitrarily wherein by profile.In tested pipeline, because the straight length deficiency is installed, can cause flow distortion, at this moment medium is by being positioned at flowing through simultaneously as a plurality of flow measurements unit such as first flow measurement unit 5, second flow measurement unit 6, i flow measurement unit 8 of diverse location, because the difference of each point flow velocity, can produce a plurality of differential pressure signals, these signals are owing to be chained together mutually, thereby reach the purpose of multi-point average, be the mean value of multiple spot fluid-velocity survey at last by the differential pressure signal of pressure guiding pipe 3 outputs.Can accurately calculate flow value according to velocity-area method.What Figure 3 shows that general big-and-middle-sized pipeline use overlaps the flow system that multiple spot uniform speed flow measurement mechanisms are formed by two.
During actual the use, installation sum i and each flow measurement cell position size Y of flow measurement unit
1, Y
2, Y
iAfter determining according to working condition and flow rate calculation method, each flow measurement unit is connected with mounting flange 2 by the wing connection support arm 7 of several different sizes; And their high pressure pressure chamber and low pressure pressure chamber connected respectively, at last by pressure guiding pipe 3 outputs; During installation, select measuring point by technical requirement at pipeline, size is opened a square hole on request then, and packing washer 4 and mounting flange 1 that whole device utilization is connected with mounting flange 2 get final product with the tested pipeline welding.
Claims (4)
1. plug-in type multiple spot uniform speed flow measurement mechanism, it is characterized in that: comprise a plurality of flow measurement unit parallel to each other, the flow measurement unit is connected with mounting flange (2) by connecting support arm (7), the back is connected mutually by pressure guiding pipe (3) output in the high and low pressure pressure chamber of flow measurement unit, and fixes by mounting flange (1) and tested pipeline.
2. plug-in type multiple spot uniform speed flow measurement mechanism according to claim 1 is characterized in that: the flow measurement unit is two or more flow measurements unit.
3. plug-in type multiple spot uniform speed flow measurement mechanism according to claim 2 is characterized in that: the span that connects the inclination alpha of support arm (7) is 70～90 °.
4. plug-in type multiple spot uniform speed flow measurement mechanism according to claim 3 is characterized in that: the flow measurement unit welds together with tested pipeline by packing washer (4) and the mounting flange (1) that is connected with mounting flange (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200310662U CN201096499Y (en) | 2007-01-17 | 2007-01-17 | Insertion type multi-point uniform speed flow measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200310662U CN201096499Y (en) | 2007-01-17 | 2007-01-17 | Insertion type multi-point uniform speed flow measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096499Y true CN201096499Y (en) | 2008-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200310662U Expired - Fee Related CN201096499Y (en) | 2007-01-17 | 2007-01-17 | Insertion type multi-point uniform speed flow measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096499Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918799A (en) * | 2018-04-04 | 2018-11-30 | 青岛理工大学 | Early warning equipment for regularly and quantitatively monitoring water supply flow velocity |
| CN110987098A (en) * | 2019-11-25 | 2020-04-10 | 威海容信测控技术有限公司 | A plug-in anti-blocking wedge-shaped flowmeter and its non-stop installation and disassembly method |
-
2007
- 2007-01-17 CN CNU2007200310662U patent/CN201096499Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918799A (en) * | 2018-04-04 | 2018-11-30 | 青岛理工大学 | Early warning equipment for regularly and quantitatively monitoring water supply flow velocity |
| CN110987098A (en) * | 2019-11-25 | 2020-04-10 | 威海容信测控技术有限公司 | A plug-in anti-blocking wedge-shaped flowmeter and its non-stop installation and disassembly method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20130117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |