CN101738228A - Gas-liquid two-phase flow Pitotbar flow sensor - Google Patents
Gas-liquid two-phase flow Pitotbar flow sensor Download PDFInfo
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- CN101738228A CN101738228A CN200910248519A CN200910248519A CN101738228A CN 101738228 A CN101738228 A CN 101738228A CN 200910248519 A CN200910248519 A CN 200910248519A CN 200910248519 A CN200910248519 A CN 200910248519A CN 101738228 A CN101738228 A CN 101738228A
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Abstract
The invention discloses a gas-liquid two-phase flow Pitotba flow sensor provided with a horizontal short circular tube; the upper part of the tube wall of the short circular tube is provided with a front circular hole and a rear circular hole; the lower part of the tube wall of the short circular tube is provided with a lower circular hole; a Pitotba flow sensor is inserted into the front circular hole; the distance among a total pressure hole, a static pressure hole and the inner wall of an inserting point is less than or equal to the radius of an inner circle of the short circular tube; and an electronic liquid level meter is connected between the rear circular hole arranged above the tube wall of the short circular tube and the lower circular hole arranged below the tube wall of the short circular tube. In the invention, the Pitotba flow sensor and the electronic liquid level meter are arranged and can output a difference pressure signal and a liquid level standard signal when in use; gas flow of gas-liquid two-phase flow in a delivery pipeline is measured, the electronic liquid level meter can be used for measuring the level of liquid in the gas-liquid two-phase flow of the delivery pipeline; the actual flow-through area of gas in the gas-liquid two-phase flow can be calculated according to the liquid level and the inner diameter of the delivery pipeline; and the gas flow of the gas-liquid two-phase flow can be accurately obtained according to the actual flow-through area of the gas. The invention can be used for measuring the gas flow of the gas-liquid two-phase flow in the delivery pipeline.
Description
Technical field
The present invention relates to the liquid level gauge of the interior liquid of pipeline of a kind of bi toba flow sensor, particularly a kind of bi toba flow sensor.
Background technology
The bi toba flow meter is to adopt the pitot tube principle to extract the total head and the static pressure signal at fluid-transporting tubing axis place, total head and static pressure signal are introduced differential pressure transmitter, in differential pressure transmitter, difference by total head and static pressure obtains dynamic pressure, dynamic pressure input integrating instrument, calculate rate of flow of fluid in conjunction with the density of fluid by dynamic pressure at flow integrator,, calculate the fluid flow in the fluid-transporting tubing and show again in conjunction with the internal diameter of fluid-transporting tubing, the temperature and pressure of fluid.Pitot crust fluid flow is in respect of bi toba flow sensor and differential pressure transmitter.Bi toba flow sensor has intubate, the lower end of intubate has at opposite radially pitot hole of sustained height upper shed direction and baroport radially, total head passage that communicates with pitot hole and the static pressure passage that communicates with baroport are arranged in the intubate, and there are total head outlet that communicates with the total head passage and the static pressure outlet that communicates with the static pressure passage in the upper end of intubate.During use, the tube wall of bi toba flow sensor intubate from the detected fluid pipeline vertically inserted in the fluid-transporting tubing of level, allow pitot hole and baroport on the axis of fluid-transporting tubing, the stream that pitot hole faces fluid comes direction, baroport is facing to the diffluence direction of fluid, when fluid flows in fluid-transporting tubing, the total head and the static pressure signal of fluid in total head outlet and the static pressure outlet difference output channel, outlet links to each other with the input end of differential pressure transmitter with static pressure the total head outlet with connecting pipe, differential pressure transmitter can draw flow rate of fluid according to the total head and the static pressure of fluid, multiply by the sectional area of pipeline again with flow rate of fluid, can calculate and export the flow of fluid.Bi toba flow sensor is the gas flow that is used in the pipeline of measuring the two-phase fluid medium of carrying gas, liquid mixing sometimes, as be used in the flow of measuring water vapor in the stream-liquid two-phase flow body medium conveyance conduit of water vapor and saturation water, owing in the conveyance conduit stream-liquid two-phase flow is arranged, flow of liquid will occupy certain pipeline section, and the method that multiply by the sectional area of pipeline with above-mentioned flow velocity is measured in the conveyance conduit has the gas flow of biphase gas and liquid flow inaccurate.In the prior art, there is not to have in the energy measurement conveyance conduit bi toba flow sensor of the gas flow of biphase gas and liquid flow.
Summary of the invention
The objective of the invention is to propose to have in a kind of energy measurement conveyance conduit the gas-liquid two-phase flow Pitotbar flow sensor of the gas flow of biphase gas and liquid flow in order to overcome above-mentioned deficiency.
The present invention is achieved using the following method.
Gas-liquid two-phase flow Pitotbar flow sensor has the short pipe of level, the front end of short pipe is a fluid intake, the rear end of short pipe is a fluid egress point, before the top of short tube wall has, back circular hole, there is the following circular hole of back round hole axial on same straight line of axis and short tube wall top the below of short tube wall, be inserted with bi toba flow sensor on the preceding circular hole with the axis normal of lacking pipe, the pitot hole of bi toba flow sensor and baroport are in pipe, the aperture of the pitot hole of bi toba flow sensor is towards the fluid intake of short pipe, the aperture of the baroport of bi toba flow sensor is towards the fluid egress point of short pipe, distance between pitot hole and baroport and the insertion point inner tubal wall is connected with the electronic level meter smaller or equal to radius of a circle in the short pipe between the following circular hole of the back circular hole of short tube wall top and short tube wall below.
During installation, the internal diameter of the short pipe of the present invention is identical with the internal diameter of tested gas-liquid two-phase fluid conveyance conduit.The present invention will be connected on the horizontal segment of tested gas-liquid two-phase fluid conveyance conduit, the total head outlet of bi toba flow sensor output is linked to each other with the static pressure inlet with the total head inlet of differential pressure transmitter respectively with the static pressure outlet, the standard electric signal output part of differential pressure transmitter is linked to each other with flow integrator, the standard electric signal output part of electronic level meter is linked to each other with flow integrator.
During use, differential pressure transmitter according to bi toba flow sensor input total head and the standard electric signal of static pressure output differential pressure to flow integrator, the electronic level meter is exported the standard electric signal of the liquid level in the tested gas-liquid two-phase fluid conveyance conduit to flow integrator, flow integrator is according to the differential pressure standard electric signal from the differential pressure transmitter input, calculate the gas flow rate of gas-liquid two-phase fluid, according to the liquid level standard electric signal in the gas-liquid two-phase fluid conveyance conduit of electronic level meter input, the liquid that the certain altitude liquid level is arranged in the pipeline, be equivalent to have in this circular pipe cross section highly is that the bow-shaped cross-section of liquid level is occupied by liquid, cutting bow-shaped cross-section with the sectional area of conveyance conduit is gas actual circulation area, multiply by gas actual circulation area with above-mentioned gas flow rate then, can obtain the gas flow in the gas-liquid two-phase fluid conveyance conduit.
When detected fluid is a kind of fluid in the conveyance conduit, inserting the pitot hole of the bi toba flow sensor in the conveyance conduit and the axis of baroport is on the axis of conveyance conduit, and promptly the distance between pitot hole and baroport and the conveyance conduit insertion point inner tubal wall equals cross section radius of a circle in the conveyance conduit.
Because tested fluid is a gas-liquid two-phase fluid, in different gas-liquid two-phase fluids, the amount of liquid is different, so the distance between the pitot hole of the bi toba flow sensor in the short pipe of insertion and baroport and the short pipe insertion point inner tubal wall can be selected in the radius of a circle in smaller or equal to short pipe by the size of amount of liquid in the gas-liquid two-phase fluid.
The present invention has bi toba flow sensor and electronic level meter, can export gas differential pressure signal and liquid level standard electric signal in the fluid-transporting tubing in use, when in measuring conveyance conduit, the gas flow of biphase gas and liquid flow being arranged, the electronic level instrumentation measures the liquid level of liquid in the interior biphase gas and liquid flow of conveyance conduit, the gas actual flow that can calculate biphase gas and liquid flow with liquid level and conveyance conduit internal diameter draws the comparatively accurately gas flow of biphase gas and liquid flow with the gas actual flow through area through area.The gas flow that biphase gas and liquid flow is arranged in the energy measurement conveyance conduit of the present invention.
Below in conjunction with accompanying drawing, the present invention is further described.
Description of drawings
Fig. 1 cuts open synoptic diagram according to the master office of looking of a kind of gas-liquid two-phase flow Pitotbar flow sensor of invention scheme proposition of the present invention;
Fig. 2 is the schematic side view of Fig. 1.
Embodiment
Fig. 1, among Fig. 2, gas-liquid two-phase flow Pitotbar flow sensor has the short pipe 1 of level, the front end of short pipe is a fluid intake 2, the rear end of short pipe is a fluid egress point 3, before the top of short tube wall has, back circular hole 4,5, there is the following circular hole 6 of back round hole axial on same straight line of axis and short tube wall top the below of short tube wall, be inserted with bi toba flow sensor 7 on the preceding circular hole with the axis normal of lacking pipe, the pitot hole 8 of bi toba flow sensor and baroport 9 are in pipe, the aperture of the pitot hole of bi toba flow sensor is towards the fluid intake of short pipe, the aperture of the baroport of bi toba flow sensor is towards the fluid egress point of short pipe, distance D between pitot hole and baroport and the above-mentioned short pipe insertion point inner tubal wall is connected with electronic level meter 10 smaller or equal to radius of a circle in the short pipe between the following circular hole of the back circular hole of short tube wall top and short tube wall below.
Claims (1)
1. gas-liquid two-phase flow Pitotbar flow sensor, it is characterized in that: the short pipe that level is arranged, the front end of short pipe is a fluid intake, the rear end of short pipe is a fluid egress point, before the top of short tube wall has, back circular hole, there is the following circular hole of back round hole axial on same straight line of axis and short tube wall top the below of short tube wall, be inserted with bi toba flow sensor on the preceding circular hole with the axis normal of lacking pipe, the pitot hole of bi toba flow sensor and baroport are in pipe, the aperture of the pitot hole of bi toba flow sensor is towards the fluid intake of short pipe, the aperture of the baroport of bi toba flow sensor is towards the fluid egress point of short pipe, distance between pitot hole and baroport and the insertion point inner tubal wall is connected with the electronic level meter smaller or equal to radius of a circle in the short pipe between the following circular hole of the back circular hole of short tube wall top and short tube wall below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910248519A CN101738228A (en) | 2009-12-18 | 2009-12-18 | Gas-liquid two-phase flow Pitotbar flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910248519A CN101738228A (en) | 2009-12-18 | 2009-12-18 | Gas-liquid two-phase flow Pitotbar flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101738228A true CN101738228A (en) | 2010-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910248519A Pending CN101738228A (en) | 2009-12-18 | 2009-12-18 | Gas-liquid two-phase flow Pitotbar flow sensor |
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| Country | Link |
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| CN (1) | CN101738228A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636223A (en) * | 2012-05-04 | 2012-08-15 | 宁波威瑞泰默赛多相流仪器设备有限公司 | Gas-liquid measurement method with super-small flow |
| CN105845380A (en) * | 2016-06-02 | 2016-08-10 | 天津市祥源安高中频电源变压器有限公司 | Oil storage cabinet capable of accurately monitoring liquid level |
-
2009
- 2009-12-18 CN CN200910248519A patent/CN101738228A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636223A (en) * | 2012-05-04 | 2012-08-15 | 宁波威瑞泰默赛多相流仪器设备有限公司 | Gas-liquid measurement method with super-small flow |
| CN105845380A (en) * | 2016-06-02 | 2016-08-10 | 天津市祥源安高中频电源变压器有限公司 | Oil storage cabinet capable of accurately monitoring liquid level |
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| 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 |
Open date: 20100616 |