CN201221957Y - Insert type multi-point combined supercharging type flow measuring device - Google Patents
Insert type multi-point combined supercharging type flow measuring device Download PDFInfo
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- CN201221957Y CN201221957Y CNU2008200294753U CN200820029475U CN201221957Y CN 201221957 Y CN201221957 Y CN 201221957Y CN U2008200294753 U CNU2008200294753 U CN U2008200294753U CN 200820029475 U CN200820029475 U CN 200820029475U CN 201221957 Y CN201221957 Y CN 201221957Y
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Abstract
The utility model relates to a plug-in multi-point combination pressurized flow measuring device, which resolves the flow measuring difficulties at small straight-tube segments of large and medium sized pipelines, has large differential pressure signals, as well as convenience for installment and maintenance and less pressure loss, can realize multi-point pressure measurement, and further can output a stable differential pressure signal. The plug-in multi-point combination pressurized flow measuring device comprises a high-pressure measuring end and a low-pressure measuring end, wherein a mean-velocity dynamic pressure tube is adopted at the high-pressure measuring end, a low-pressure end of the plug-in multi-point mean-velocity flow measuring device is utilized at the low-pressure measuring end, the mean-velocity dynamic pressure tube and the plug-in multi-point mean-velocity flow measuring device are arranged in a vertical way, the mean-velocity dynamic pressure tube is one or more in number, multiple mean-velocity dynamic pressure tubes are communicated mutually, the plug-in multi-point mean-velocity flow measuring device is one or more in number, and multiple plug-in multi-point mean-velocity flow measuring devices are communicated mutually. A dynamic pressure measuring hole is arranged at the front end of the mean-velocity dynamic pressure tube, and the front end of the dynamic pressure measuring hole is a parabolic face.
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 combination boosting type flow measurement device, and it is mainly used in the measurement of gas flow in the various pipelines (pipe or square tube).
Two, background technology:
In the 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 need measure the air mass flow of a large amount of various pipelines in the fuel-burning power plant, has following problem in metering:
1. when large and medium-sized piping erection, because it is very short and with the adjustment doors distance when very near that straight length is installed, conventional apparatus for measuring air quantity can't normally measure, and causes output linear very poor, can't realize the bringing normally into operation of automatic control system.
2. the on-the-spot flow apparatus that is used for little straight length commonly used at present, because reasons in structure, installation and maintenance are very inconvenient, and output signal is less, are unfavorable for measuring selection and use with transmitter especially, and system sensitivity is little, and range ability is restricted.
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 combination boosting type flow measurement device is provided, it has solved the difficult problem of the little straight length flow measurement of large and medium-sized pipeline, both had the convenience of bigger differential pressure signal, I﹠M, 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 combination boosting type flow measurement device comprises high pressure pressure end and low pressure pressure end, and it is characterized in that: high pressure pressure end adopts the average rate dynamic pressure tube, and low pressure pressure end adopts the low pressure end of plug-in type multiple spot uniform speed flow measurement mechanism.
Above-mentioned average rate dynamic pressure tube and the vertical setting of the general employing of plug-in type multiple spot uniform speed flow measurement mechanism also can be arranged parallel or at interval.
Above-mentioned average rate dynamic pressure tube is one or more, uses when a plurality of to be communicated with between the average rate dynamic pressure tube, and plug-in type multiple spot uniform speed flow measurement mechanism is one or more, uses when a plurality of to be communicated with between the plug-in type multiple spot uniform speed flow measurement mechanism.
Above-mentioned average rate dynamic pressure tube front end is the dynamic pressure pressure port, and dynamic pressure pressure port front end is parabolic.
Compared with prior art, the advantage and the effect that the utlity model has are as follows:
1. the utility model has utilized the measuring characteristic of average rate dynamic pressure tube and multiple spot uniform speed flow measurement mechanism, makes whole flow measurement device realize the supercharging of signal, has bigger differential pressure signal.
2. the utility model is to adopt single measurement scheme of overlapping or overlapping average rate more according to line size, can be adapted to the difficult problem that the little straight length of various sizes pipeline is measured.
3. the utility model has solved near little straight length reaches flow when installing adjustment doors a measurement difficult problem, and has plug-in type multiple spot uniform speed flow measurement mechanism major advantage, is particularly suitable for the measurement and the control of present large-sized boiler secondary air arm flow.
Four, description of drawings:
Fig. 1 is the structural representation of the utility model at circular pipe;
Fig. 2 is the structural representation of the utility model at square pipe;
Fig. 3 is the structural representation that has paraboloidal dynamic pressure pressure port.
Among the figure, 1-tested pipeline, 2-multiple spot uniform speed flow measurement mechanism, 3-average rate dynamic pressure tube, 4-dynamic pressure pressure port, 5-air-flow, 6-parabola.
Five, embodiment:
The utility model is mainly used in the flow metering and the test of various sizes pipeline, be based on mean velocity tube flowmeter and plug-in type multiple spot uniform speed flow measurement mechanism, these devices are less and when being installed in occasion measurement such as adjustment doors front and back at straight length, use flow apparatus such as xsect commonly used at present, wing, installation and maintenance are inconvenient especially, flow measuring system lost efficacy immediately when occurring stopping up, and use the utility model flow apparatus, the result of use highly significant can be installed and safeguard easily.The utility model has utilized special average rate dynamic pressure tube (3) to be output as malleation and plug-in type multiple spot uniform speed flow measurement mechanism (2) is output as the characteristics of negative pressure, can realize the purpose that system signal pressure increases after the combination.
Referring to Fig. 1 and Fig. 2, the utility model as high pressure pressure end, is exported with plug-in type multiple spot uniform speed flow measurement mechanism 2 average rate dynamic pressure tube 3 on the basis of average rate dynamic pressure tube 3 and plug-in type multiple spot uniform speed flow measurement mechanism 2 as low pressure pressure end.The output high pressure of flow apparatus is from average rate dynamic pressure tube 3, and low pressure is taken from the low pressure output of plug-in type multiple spot uniform speed flow measurement mechanism 2.The average rate dynamic pressure tube 3 that is used for high pressure output is traditionally arranged to be vertical direction with the plug-in type multiple spot uniform speed flow measurement mechanism 2 that is used for low pressure output when mounted, also can arrange parallel or at interval.Overlap when using is communicated with the back as high pressure output with all average rate dynamic pressure tubes 3 more, and the low pressure connection back of all plug-in type multiple spot uniform speed flow measurement mechanisms 2 is exported as low pressure.Referring to Fig. 3, average rate dynamic pressure tube 3 is a custom-designed dynamic pressure measurement pipe on the basis of mean velocity tube flowmeter, and average rate dynamic pressure tube 3 front ends are dynamic pressure pressure port 4, and dynamic pressure pressure port 4 front ends are parabolic 6.
During real work, use one or many custom-designed average rate dynamic pressure measurement pipes, with the malleation output terminal of the average back of all dynamic pressures in the tested pipeline 1 as flow apparatus, then another (vertically) direction use one or many plug-in type multiple spot uniform speed flow measurement mechanisms are communicated with its low pressure output and average back as the negative pressure output terminal of flow apparatus, thereby realized average measurement, reached purpose the metering of whole cross section to whole pipe both direction multiple spot flow velocity.
Claims (5)
1, a kind of plug-in type multiple spot combination boosting type flow measurement device, comprise high pressure pressure end and low pressure pressure end, it is characterized in that: high pressure pressure end adopts average rate dynamic pressure tube (3), and low pressure pressure end adopts the low pressure end of plug-in type multiple spot uniform speed flow measurement mechanism (2).
2, plug-in type multiple spot combination boosting type flow measurement device according to claim 1 is characterized in that: average rate dynamic pressure tube (3) adopts vertical setting or parallel or setting at interval with plug-in type multiple spot uniform speed flow measurement mechanism (2).
3, plug-in type multiple spot combination boosting type flow measurement device according to claim 2, it is characterized in that: average rate dynamic pressure tube (3) is one, plug-in type multiple spot uniform speed flow measurement mechanism (2) is one.
4, plug-in type multiple spot combination boosting type flow measurement device according to claim 2, it is characterized in that: average rate dynamic pressure tube (3) is for a plurality of, be communicated with between a plurality of average rate dynamic pressure tubes (3), plug-in type multiple spot uniform speed flow measurement mechanism (2) is a plurality of, is communicated with between a plurality of plug-in type multiple spot uniform speed flow measurement mechanisms (2).
5, according to claim 3 or 4 described plug-in type multiple spot combination boosting type flow measurement devices, it is characterized in that: average rate dynamic pressure tube (3) front end is dynamic pressure pressure port (4), and dynamic pressure pressure port (4) front end is parabolic (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200294753U CN201221957Y (en) | 2008-06-27 | 2008-06-27 | Insert type multi-point combined supercharging type flow measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200294753U CN201221957Y (en) | 2008-06-27 | 2008-06-27 | Insert type multi-point combined supercharging type flow measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221957Y true CN201221957Y (en) | 2009-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200294753U Expired - Lifetime CN201221957Y (en) | 2008-06-27 | 2008-06-27 | Insert type multi-point combined supercharging type flow measuring device |
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| CN (1) | CN201221957Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323060A (en) * | 2013-06-11 | 2013-09-25 | 鞍钢股份有限公司 | Method for testing gas flow and flow velocity of pipeline |
| CN108332232A (en) * | 2018-01-18 | 2018-07-27 | 北京源深节能技术有限责任公司 | Turbulent burner Secondary Air on-line measurement system |
| CN108386867A (en) * | 2018-01-18 | 2018-08-10 | 北京源深节能技术有限责任公司 | Turbulent burner Secondary Air On-line Measuring Method |
| CN117490791A (en) * | 2023-10-31 | 2024-02-02 | 大唐环境产业集团股份有限公司 | Method for improving variable working condition measurement response characteristic of 5X 7 standard grid method flowmeter |
-
2008
- 2008-06-27 CN CNU2008200294753U patent/CN201221957Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323060A (en) * | 2013-06-11 | 2013-09-25 | 鞍钢股份有限公司 | Method for testing gas flow and flow velocity of pipeline |
| CN108332232A (en) * | 2018-01-18 | 2018-07-27 | 北京源深节能技术有限责任公司 | Turbulent burner Secondary Air on-line measurement system |
| CN108386867A (en) * | 2018-01-18 | 2018-08-10 | 北京源深节能技术有限责任公司 | Turbulent burner Secondary Air On-line Measuring Method |
| CN117490791A (en) * | 2023-10-31 | 2024-02-02 | 大唐环境产业集团股份有限公司 | Method for improving variable working condition measurement response characteristic of 5X 7 standard grid method flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090415 |
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| CX01 | Expiry of patent term |