CN2906564Y - Push-in type three-orifice flow measurer - Google Patents
Push-in type three-orifice flow measurer Download PDFInfo
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- CN2906564Y CN2906564Y CN 200520079102 CN200520079102U CN2906564Y CN 2906564 Y CN2906564 Y CN 2906564Y CN 200520079102 CN200520079102 CN 200520079102 CN 200520079102 U CN200520079102 U CN 200520079102U CN 2906564 Y CN2906564 Y CN 2906564Y
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- larynx
- interior
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- throat
- flow
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Abstract
The utility model relates to a plug-in type three-throat diameter flow meter, which has the advantages of large output signal, stable output signal, low pressure loss, easy installation and maintenance, and good anti-plugging performance. The utility model comprises a double throat diameter flow measuring member, a single throat diameter flow measuring member is sleeved outside the double throat diameter flow measuring member. The double throat diameter flow measuring member comprises an inner fluid intake throat, the inner turbulence section is connected with an inner fluid intake throat, a high pressure tapping room is positioned on the inner turbulence section, an inner measurement guide section is connected with an inner turbulence section, an inner measuring throat is connected with the inner measurement guide section, a low pressure tapping room is positioned at the inner measuring throat, an inner diffusion section is connected with the inner measuring throat, the high pressure tapping room and the low pressure tapping room are connected through a pressure pipe and a high/low pressure tapping joint, the high/low pressure tapping joints are connected with a differential pressure transmitter.
Description
One, technical field:
The utility model relates to a kind of flow measurement device, especially relates to a kind of plug-in type three throat radius flow measurement device, and it mainly is the measurement that is used for the low flow rates of fluid flow of various medium and small pipelines (pipe or square tube).
Two, background technology:
The particularly present popular Circulating Fluidized Bed Boiler with high environmental protection and high energy efficiency of steam boiler in the fuel-burning power plant need be carried out flow metering to a large amount of (and measuring straight length deficiency) air at present, mainly has following problem in the metering:
1. when medium and small piping erection, measure the measurement requirement that straight length is difficult to satisfy the common discharge meter, and flowmeters such as operable wing are because the volume heaviness is installed very difficulty;
2. the on-the-spot mean velocity tube flowmeter that uses at present, though the pressure loss is little, easy for installation, its malleation pressure port stops up easily, output signal is less in addition, can not be used for low flow velocity metering.
Three, utility model content:
The utility model provides a kind of plug-in type three throat radius flow measurement device in order to solve the weak point in the above-mentioned background technology, and its output signal is big, stable output signal, and the pressure loss is little, and is convenient for installation and maintenance, and has anti-blocking performance preferably.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of plug-in type three throat radius flow measurement device is characterized in that: comprise a double throat diameter flow-metering mechanism, single throat diameter flow-metering mechanism of double throat diameter flow-metering mechanism overcoat.
Above-mentioned double throat diameter flow-metering mechanism comprises that inner fluid imports larynx, interior turbulent flow section imports larynx with inner fluid and joins, high pressure pressure ring casing is positioned at the turbulent flow section, interior measurement guide section and interior turbulent flow section are joined, interior measurement larynx and interior measurement guide section join, and low pressure pressure ring casing is positioned at measures the larynx place, and interior diffuser and interior measurement larynx join, high pressure pressure ring casing is connected with high and low impulse joint by pressure guiding pipe with low pressure pressure ring casing, and high and low impulse joint links to each other with differential pressure transmitter.
Above-mentioned single throat diameter flow-metering mechanism comprises outer turbulent flow section, and the external pelivimetry guide section joins with outer turbulent flow section, and external pelivimetry larynx and external pelivimetry guide section join, and external diffusion section and external pelivimetry larynx join,
End face and outer mold surface that above-mentioned inner fluid imports larynx are solid of revolution, and diameter is 15～40mm.
Interior turbulent flow section is the face of cylinder of length 60～120mm, and diameter is 15～40mm, and outer turbulent section is the face of cylinder of length 50～120mm, and diameter is 30～100mm.
Interior measurement guide section and external pelivimetry guide section are the circular cone table top of cone angle 20～60 degree.
Interior measurement larynx and external pelivimetry larynx are inner cylinder face, and interior measurement larynx diameter is 8～20mm, and external pelivimetry larynx diameter is 30～60mm.
Interior diffuser and external diffusion Duan Weiyu measure the circular cone table top that the gorge circle cylinder joins.
Compared with prior art, the advantage and the effect that the utlity model has are as follows:
1. the organic assembling in single, double larynx footpath, whole flow measurement device can produce a bigger differential pressure signal, the sensitivity that has improved system.
2. flow velocity was accelerated when fluid was through externally measured diversion section, at the terminal negative pressuren zone that forms of interior diffuser, made the pressure of the low pressure measuring point of measuring larynx in being in lower, had realized the further amplification to signal.Be used in the fluid measurement of flow velocity less than 5m/s.
3. integral body still adopts plug in construction design, two turbulent flow sections make it to become one install and safeguard very convenient, to the very low flow metering product of straight length requirement.Its series of products can satisfy the flow metering of 200mm ~ 6000mm pipeline.
Four, description of drawings:
Accompanying drawing is a structural representation of the present utility model.
Among the figure, [1]-external diffusion section [2]-external pelivimetry larynx [3]-external pelivimetry guide section
[4]-interior diffuser [5]-low pressure pressure ring casing [6]-outer turbulent flow section
[7]-interior measurement larynx [8]-interior measurement guide section [9]-high pressure pressure ring casing
[10]-interior turbulent flow section [11]-inner fluid importing larynx [12]-wing sway brace
[13]-mounting flange [14]-high pressure impulse joint [15]-low pressure impulse joint
[16]-packing washer [17]-mounting flange [18]-pressure guiding pipe
Five, embodiment:
The utility model is a measurement difficult problem that solves medium and small pipeline, low flow rate.This flow measurement device, minimum pipe diameter can reach 200mm.Compare with total pressure type flow measurement device such as little layman, this device has advantages such as differential pressure output is big, and anti-blocking performance is good.
Referring to accompanying drawing, the utility model is on a double throat diameter flow measurement device basis, and one in overcoat is by turbulent flow section and one group of single throat diameter flow measurement device that the measurement larynx is formed, thereby constitutes a three throat radius flow measurement device.Flow measurement device is by little double throat diameter flow measurement device and a kind of new flow measurement device that bigger single throat diameter flow measurement device combines, it imports larynx by inner fluid, inside and outside turbulent flow section, inside and outside measurement guide section, inside and outside measurement throat and inside and outside diffuser are formed.The double throat diameter flow-metering mechanism comprises that inner fluid imports larynx 11, interior turbulent flow section 10 imports larynx 11 with inner fluid and joins, high pressure pressure ring casing 9 is positioned at turbulent flow section 10, the interior guide section 8 of measuring joins with interior turbulent flow section 10, the interior larynx 7 of measuring joins with interior measurement guide section 8, low pressure pressure ring casing 5 is positioned at measures larynx 7 places, interior diffuser 4 joins with interior measurement larynx 7, high pressure pressure ring casing 9 is connected with high and low impulse joint by pressure guiding pipe 18 with low pressure pressure ring casing 5, and high and low impulse joint links to each other with differential pressure transmitter.The single throat diameter flow-metering mechanism comprises outer turbulent flow section 6, and external pelivimetry guide section 3 joins with outer turbulent flow section 6, and external pelivimetry larynx 2 joins with external pelivimetry guide section 3, and external diffusion section 1 is joined with external pelivimetry larynx 2.End face and outer mold surface that inner fluid imports larynx 11 are solid of revolution, and diameter is 15～40mm.Interior turbulent flow section 10 is the face of cylinder of length 60～120mm, and diameter is 15～40mm, and outer turbulent section is the face of cylinder of length 50～120mm, and diameter is 30～100mm.Interior measurement guide section 8 and external pelivimetry guide section 3 are the circular cone table top of cone angle 20～60 degree.Interior measurement larynx 7 and external pelivimetry larynx 2 are inner cylinder face, and interior measurement larynx diameter is 8～20mm, and external pelivimetry larynx 2 diameters are 30～60mm.Interior diffuser 4 and external diffusion section 1 are and measure the circular cone table top that the gorge circle cylinder joins.
During real work, measured medium by inner fluid import larynx 11 flow into, through interior turbulent flow section 10 turbulent flows, and take out high pressure at this, through interior measurement guide section enters in, measure larynx 7 then, and take out low pressure at this, flow to external pelivimetry larynx 2 places behind the interior diffuser 4 of process at last; And peripheral fluid has entered outer turbulent flow section 6, flow to external pelivimetry larynx 2 and forms negative pressuren zone at this after 3 speed-raisings of external pelivimetry guide section then, makes that the pressure that is positioned at the low pressure pressure ring casing 5 of measuring larynx 7 places is lower, thereby reaches the purpose that differential pressure signal amplifies; At last, interior outer fluid is measured larynx 2 places outside and is joined, and flows back in the pipeline through external diffusion section 1.The differential pressure signal of the acquisition of this device of process is sent to high pressure impulse joint 14 and 15 outputs of low pressure impulse joint by pressure guiding pipe 18.
After the position of measurement component is determined as required, measurement component is connected with mounting flange 13 by the wing sway brace 12 of fixed length size; The pressure guiding pipe 18 that passes through of high pressure pressure ring casing 9 and low pressure pressure ring casing 5 is sent to high and low pressure impulse joint 14 and 15; During installation, select measuring point by technical requirement at pipeline, size is opened a square hole on request then, utilizes mounting flange 17 and tested pipeline welding to get final product in whole device.
Claims (8)
1, a kind of plug-in type three throat radius flow measurement device is characterized in that: comprise a double throat diameter flow-metering mechanism, single throat diameter flow-metering mechanism of double throat diameter flow-metering mechanism overcoat.
2, plug-in type three throat radius flow measurement device according to claim 1, it is characterized in that: described double throat diameter flow-metering mechanism comprises that inner fluid imports larynx (11), interior turbulent flow section (10) imports larynx (11) with inner fluid and joins, high pressure pressure ring casing (9) is positioned at turbulent flow section (10), the interior guide section (8) of measuring joins with interior turbulent flow section (10), the interior larynx (7) of measuring joins with interior measurement guide section (8), low pressure pressure ring casing (5) is positioned at measurement larynx (7) and locates, interior diffuser (4) joins with interior measurement larynx (7), high pressure pressure ring casing (9) is connected with low pressure impulse joint (15) with high pressure impulse joint (14) by pressure guiding pipe (18) with low pressure pressure ring casing (5), and high pressure impulse joint (14) links to each other with differential pressure transmitter with low pressure impulse joint (15).
3, plug-in type three throat radius flow measurement device according to claim 2, it is characterized in that: described single throat diameter flow-metering mechanism comprises outer turbulent flow section (6), external pelivimetry guide section (3) joins with outer turbulent flow section (6), external pelivimetry larynx (2) joins with external pelivimetry guide section (3), and external diffusion section (1) is joined with external pelivimetry larynx (2).
4, plug-in type three throat radius flow measurement device according to claim 3 is characterized in that: end face and outer mold surface that described inner fluid imports larynx (11) are solid of revolution, and diameter is 15～40mm.
5, plug-in type three throat radius flow measurement device according to claim 4, it is characterized in that: interior turbulent flow section (10) is the face of cylinder of length 60～120mm, diameter is 15～40mm, and outer turbulent flow section (6) is the face of cylinder of length 50～120mm, and diameter is 30～100mm.
6, plug-in type three throat radius flow measurement device according to claim 5 is characterized in that: interior measurement guide section (8) and external pelivimetry guide section (3) are the circular cone table top of cone angle 20～60 degree.
7, plug-in type three throat radius flow measurement device according to claim 5 is characterized in that: interior measurement larynx (7) and external pelivimetry larynx (2) are inner cylinder face, and interior measurement larynx (7) diameter is 8～20mm, and external pelivimetry larynx (2) diameter is 30～60mm.
8, plug-in type three throat radius flow measurement device according to claim 5 is characterized in that: interior diffuser (4) and external diffusion section (1) are and measure the circular cone table top that the gorge circle cylinder joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079102 CN2906564Y (en) | 2005-07-20 | 2005-07-20 | Push-in type three-orifice flow measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079102 CN2906564Y (en) | 2005-07-20 | 2005-07-20 | Push-in type three-orifice flow measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2906564Y true CN2906564Y (en) | 2007-05-30 |
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ID=38115205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520079102 Expired - Fee Related CN2906564Y (en) | 2005-07-20 | 2005-07-20 | Push-in type three-orifice flow measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2906564Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151815A (en) * | 2017-12-27 | 2018-06-12 | 中核四0四有限公司 | A kind of device for pressure measurement and measuring method suitable for denitration fluid bed |
-
2005
- 2005-07-20 CN CN 200520079102 patent/CN2906564Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151815A (en) * | 2017-12-27 | 2018-06-12 | 中核四0四有限公司 | A kind of device for pressure measurement and measuring method suitable for denitration fluid bed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070530 Termination date: 20120720 |