CN201034650Y - Semi-ring voltage equalizing type ring casing pressure sampling stephanoporate shaped hole plate flow rate sensor - Google Patents
Semi-ring voltage equalizing type ring casing pressure sampling stephanoporate shaped hole plate flow rate sensor Download PDFInfo
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- CN201034650Y CN201034650Y CNU2007201240830U CN200720124083U CN201034650Y CN 201034650 Y CN201034650 Y CN 201034650Y CN U2007201240830 U CNU2007201240830 U CN U2007201240830U CN 200720124083 U CN200720124083 U CN 200720124083U CN 201034650 Y CN201034650 Y CN 201034650Y
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Abstract
The utility model discloses a semi-ring balanced pressure type ring casing pressure measuring porous orifice flow sensor, comprising a left flange body, a right flange body, a left ring casing, a right ring casing, a left and a right ring casing gaskets, a left and a right side gaskets of the orifice plate, an orifice plate. The left and the right ring casings are both provided with a ring groove which respectively forms a left pressure cavity and a right pressure cavity through the orifice plate and sealing by the left and the right side gaskets of the orifice plate. The outer-ring walls of the ring groove of the left and the right ring casings are provided with a pressure measuring orifice communicated with a pressure measuring tube. The utility model is characterized in that the center of the orifice plate is provided with a concentric circle standard orifice or a concentric circle conical inlet orifice; one or a plurality of segmental orifices distributed equally are arranged around the concentric circle standard orifice or the concentric circle conical inlet orifice; the inner-ring walls of ring groove of the left and the right ring casings are both provided with pressure measuring orifices. Thus, the utility model has the advantages of high precision, low pressure loss and low energy consuming, which can adapt the requirement of insufficiency of straight pipe, vortex flow, rotating flow, two phase flow, smudgy medium, low Reynolds number, low signal-to-noise ratio, high range ratio etc., and measures exactly.
Description
Technical field
The utility model relates to a kind of flow sensor.Specifically be to integrate the semi-ring even pressure type ring casing pressure porous shape orifice plate flow sensor that porous shape throttling element and semi-ring are all pressed pressure obtaning device.
Background technology
Existing orifice plate flow sensor is because standardization, and simple in structure, is easy to duplicate, and is cheap and obtain widespread use.But because there are problems in the defective of self structure:
1, foul deposition before and after the orifice plate flow sensor causes big or very big measuring error.
2, the orifice plate flow sensor is when horizontal pipe is installed, and clearly in clear gathering that goes out gas or the tested gas in the fluid to be measured goes out accumulating of liquid etc., all brings big or measuring error greatly.
3, very easily wearing and tearing of orifice plate sheet inlet.The orifice edge of orifice plate requires very sharp keen, owing to be subjected to washing away of fluid for a long time, therefore very easily wearing and tearing influence measuring accuracy, cause big measuring error.
4, flow development length requires long before and after the orifice plate flow sensor mounting points.The prerequisite that the orifice plate flow sensor is accurately measured is: the fluid of the orifice plate flow sensor of flowing through must be that fully stream is managed in development.This needs before and after the flow sensor mounting points enough flow development lengths are arranged.Straight length deficiency before and after the flow sensor mounting points, the distortion of fluid generation flow velocity, a fluid stream deflection can cause great measuring error.
5, the ways of measure pressure of orifice plate flow sensor is the single-point pressure, causes measuring error when flow velocity distortion, a fluid stream deflection.Be single-point boring pressure when flange pressure and span pressure; When the ring casing pressure, the pressure ring casing communicates with fluid-transporting tubing everywhere, and the effect of ring casing pressure is only arranged, and does not have the effect of all pressing.
6, the crushing of orifice plate is big, the energy consumption height.Because fluid acutely shrinks before and after orifice plate sheet aperture and enlarges, the build-up of pressure loss.Crushing is a kind of stealthy energy consumption, often easily ignores, and causes instrument operating cost height.
7, range ratio is little.Because of the nonlinearity of orifice plate efflux coefficient C value is big, so range ratio is little.The range ratio of orifice plate is generally: 1: 3～1: 4.
8, low side Reynolds number height.Along with the β value increases, the low side Reynolds number increases.In flange pressure orifice plate, the low side Reynolds number increases with the increase of β value and pipe diameter D.In a bigger low side reynolds number range section, can not accurately measure, cause measuring error.
9, signal to noise ratio (S/N ratio) is big.Cause big measuring error.
10, rotating flow can bring great measuring error.The variation of efflux coefficient reaches 25% under serious rotating flow effect.
Summary of the invention
The purpose of this utility model just provides a kind of high precision, low pressure loss, low energy consumption, it is little, the big requirement of range ratio to adapt to straight length deficiency, eddy-currents, rotating flow, two-phase flow, dirty medium, low reynolds number, signal to noise ratio (S/N ratio), and measures the porous of semi-ring even pressure type flange pressure accurately shape orifice plate flow sensor.
The utility model is achieved through the following technical solutions, be a kind of semi-ring even pressure type ring casing pressure porous shape orifice plate flow sensor, comprise left flange body, right flange body, left ring casing, right ring casing, left and right ring casing sealing gasket, orifice plate sheet left and right side sealing gasket, orifice plate sheet; Left side ring casing and right ring casing all have a ring groove, and this ring groove constitutes left pressure chamber, right pressure chamber respectively by orifice plate sheet and the sealing of orifice plate sheet left and right side sealing gasket; A pressure port is arranged on the ring groove external annulus of left ring casing and right ring casing, and it communicates with the pressure pipe; Be evenly equipped with two or more pressure ports on the ring groove internal ring wall of left side ring casing and right ring casing, they communicate with fluid-transporting tubing; It is characterized in that: there are a concentric circles gauge orifice or concentric circles conical entrance hole in the center of described orifice plate sheet, and one or the scarce shape hole of uniform a plurality of circle are arranged around concentric circles gauge orifice or concentric circles conical entrance hole.
Based on the standard orifice plate restriction device, porous shape orifice plate sheet in the utility model, a concentric circles gauge orifice or concentric circles conical entrance hole are arranged at the center of orifice plate sheet, and around the hole, being evenly equipped with the scarce hole of one or more circles, it is the part of the area of a circle of diameter with the internal diameter of the pipeline that the opening portion in the scarce shape hole of this circle can be one.The looping pit effect that the scarce hole group (collection) of described a plurality of circle is closed is: reduce and even eliminated the influence of whirlpool turn of tidal stream convection cell measuring accuracy; When level is installed, the liquid or solid particulate in the tested gas medium can not deposit or the fluid to be measured medium in the clear gas that goes out can not assemble, eliminated the measuring error that causes thus.
Owing to adopted technique scheme, the utlity model has following advantage:
1, the circle of porous shape orifice plate sheet lacks the shape hole, and the foul in the fluid is successfully flowed out, and has eliminated the foul deposition of orifice plate sheet front and back, thereby has eliminated the measuring error that causes therefrom.
2, the speed of wearing and tearing in the aperture can be slowed down in the tapered centre ingate of porous shape orifice plate sheet, reduces the measuring error that the aperture wearing and tearing are brought.
3, porous shape orifice plate sheet is evenly equipped with the scarce hole of two or more circles on same circumference, and a plurality of circles lack the hole and be combined into a looping pit on the orifice plate sheet.The structure of looping pit can be eliminated the influence of rotating flow to greatest extent, and under serious rotating flow effect, the variation of efflux coefficient is lower than 1%.
4, the porous shape structure of porous shape orifice plate sheet makes fluid big contraction and expansion can not take place before and after orifice plate sheet aperture, thereby has reduced the pressure loss to greatest extent.
5, the porous shape structure of porous shape orifice plate sheet has been eliminated the eddy current of orifice plate sheet front and back, thereby has eliminated the obstruction of pressure tappings.
6, when the straight length deficiency, during the distortion of a fluid stream generation deflection, flow velocity, all press the pressure point in chamber to be the pressure of same circumference multiple spot, the each point force value is after all pressing in the chamber all pressure, make measured value approach true value, therefore can reduce the influence of a fluid stream deflection or flow velocity distortion measuring accuracy.
7, the equal laminated structure of semi-ring when fluid is flowed through horizontal pipe, has been eliminated that gas is clear in liquid condensation in the tested gas or the fluid to be measured goes out to assemble, thereby has been reduced signal to noise ratio (S/N ratio), has solved the measuring error that signal fluctuation brought.
8, the looping pit structure of porous shape orifice plate when fluid is flowed through horizontal pipe, has eliminated in the tested gas in liquid condensation or the fluid to be measured that gas is clear to be gone out, and can not produce and gather, and has eliminated the measuring error of bringing thus.
9, adopt the equal laminated structure in blind chamber, fluid can only all be pressed the chamber from the turnover of ring groove internal ring wall pressure port, thereby realizes all pressures effect of multiple spot pressure.
10, the porous shape structure of porous shape orifice plate makes its accurate measurement that is applicable to low reynolds number, low flow rates of fluid flow, low side Reynolds number (Red
Min) can reach 200.Can realize the wide-range ratio, range ratio can reach 1: 20.
11, semi-ring even pressure type ring casing pressure porous shape orifice plate flow sensor, its measuring accuracy can reach 0.5 grade.
Description of drawings
Description of drawings of the present utility model is as follows:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a kind of A-A sectional view among Fig. 1;
Fig. 3 is the another kind of A-A sectional view among Fig. 1;
Fig. 4 is the structural representation of a kind of examples of implementation of orifice plate sheet;
Fig. 5 is the B-B sectional view among Fig. 4;
Fig. 6 is the structural representation of the another kind of embodiment of orifice plate sheet;
Fig. 7 is the C-C sectional view among Fig. 6.
Among the figure: 1. left flange body; 2. right flange body; 3. left ring casing; 4. right ring casing; 5. left and right ring casing sealing gasket; 6. orifice plate left and right side sealing gasket; 7. orifice plate sheet; 8. ring groove; 9. pressure port; 10. pressure pipe; 11. pressure port; 12. the blind chamber of left semi-ring; 13. the blind chamber of right semi-ring; 14. circle lacks the shape hole.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Shown in Fig. 1,3～7, the utility model comprises left flange body 1, right flange body 2, left ring casing 3, right ring casing 4, left and right ring casing sealing gasket 5, orifice plate sheet left and right side sealing gasket 6, orifice plate sheet 7; Left side ring casing and right ring casing all have a ring groove 8, and this ring groove constitutes left pressure chamber, right pressure chamber respectively by orifice plate sheet and the sealing of orifice plate sheet left and right side sealing gasket; A pressure port 9 is arranged on the ring groove external annulus of left ring casing and right ring casing, and it communicates with pressure pipe 10; Be evenly equipped with two or more pressure ports 11 on the ring groove internal ring wall of left side ring casing and right ring casing, they communicate with fluid-transporting tubing; It is characterized in that: there are a concentric circles gauge orifice or concentric circles conical entrance hole in the center of described orifice plate sheet 7, and one or the scarce shape hole 14 of uniform a plurality of circle are arranged around concentric circles gauge orifice or concentric circles conical entrance hole.
Shown in Fig. 4 or 6, stop up pressure tappings in order to prevent silt, dust, suspension, fiber etc. in the liquid before and after being deposited on the aperture, it is the part of the area of a circle of diameter with the internal diameter of the pipeline that the opening portion that circle lacks shape hole 14 is one.
As shown in Figure 1, in order to reduce the influence of a fluid stream deflection or flow velocity distortion, make measured value approach the true value of flow, be evenly equipped with two or more pressure ports 11 on the ring groove internal ring wall of left ring casing and right ring casing, they communicate with fluid-transporting tubing, finish the 7 front and back multiple spot pressures of orifice plate sheet.
Shown in Fig. 1 or 2, described ring groove 8 is a semi-ring formula ring groove, and this semi-ring formula ring groove constitutes the blind chamber of left and right semi-ring respectively by orifice plate sheet and 6 sealings of orifice plate sheet left and right side sealing gasket and all presses chamber 12,13.
The utility model is based on the standard orifice plate restriction device, on ring casing, form the blind chamber of semi-ring and all press pressure obtaning device, wherein said semi-ring formula ring groove can form by filling forms, also can form at mould, can also form by other mode, it forms position and size partly and can set as required.As shown in Figure 2, as forming example with semi-ring formula ring groove by filling forms, in the pipeline that level is installed, when measuring liquid or vapor stream, the filling of its semi-ring formula ring groove partly is positioned at the top of installation site; As shown in Figure 3, when when measuring the gas fluid, the filling of semi-ring formula ring groove partly is positioned at the bottom of installation site.
The blind chamber of described semi-ring all presses the effect in chamber to be: eliminate the measuring error that flow velocity inequality or a fluid stream deformity are brought, avoided the clear gas that goes out in the fluid to be measured medium can not assemble with tested gas medium in the clear liquid or solid particles agglomerate that goes out and being blocked in all press in the chamber, also avoided all pressing liquid in the chamber to produce turbulent flow and weaken it and all press.
Claims (4)
1. a semi-ring even pressure type ring casing pressure porous shape orifice plate flow sensor comprises left flange body (1), right flange body (2), left ring casing (3), right ring casing (4), left and right ring casing sealing gasket (5), orifice plate sheet left and right side sealing gasket (6), orifice plate sheet (7); Left side ring casing and right ring casing all have a ring groove (8), and this ring groove constitutes left pressure chamber, right pressure chamber respectively by orifice plate sheet and the sealing of orifice plate sheet left and right side sealing gasket; A pressure port (9) is arranged on the ring groove external annulus of left ring casing and right ring casing, and it communicates with pressure pipe (10); Be evenly equipped with two or more pressure ports (11) on the ring groove internal ring wall of left side ring casing and right ring casing, they communicate with fluid-transporting tubing; It is characterized in that: there are a concentric circles gauge orifice or concentric circles conical entrance hole in the center of described orifice plate sheet (7), and one or the scarce shape hole (14) of uniform a plurality of circle are arranged around concentric circles gauge orifice or concentric circles conical entrance hole.
2. semi-ring even pressure type ring casing pressure porous shape orifice plate flow sensor as claimed in claim 1 is characterized in that: it is the part of the area of a circle of diameter with the internal diameter of the pipeline that the opening portion in the scarce shape hole (14) of circle is one.
3. semi-ring even pressure type ring casing pressure porous shape orifice plate flow sensor as claimed in claim 1, it is characterized in that: be evenly equipped with two or more pressure ports (11) on the ring groove internal ring wall of left ring casing and right ring casing, they communicate with fluid-transporting tubing, finish the multiple spot pressure of orifice plate sheet (7) front and back.
4. semi-ring even pressure type ring casing pressure porous shape orifice plate flow sensor as claimed in claim 1, it is characterized in that: described ring groove (8) is a semi-ring formula ring groove, and this semi-ring formula ring groove constitutes the blind chamber of left and right semi-ring respectively by orifice plate sheet and sealing gasket (6) sealing that is arranged on orifice plate sheet left and right side and all presses chamber (12,13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201240830U CN201034650Y (en) | 2007-04-20 | 2007-04-20 | Semi-ring voltage equalizing type ring casing pressure sampling stephanoporate shaped hole plate flow rate sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201240830U CN201034650Y (en) | 2007-04-20 | 2007-04-20 | Semi-ring voltage equalizing type ring casing pressure sampling stephanoporate shaped hole plate flow rate sensor |
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| CN201034650Y true CN201034650Y (en) | 2008-03-12 |
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|---|---|---|---|
| CNU2007201240830U Expired - Fee Related CN201034650Y (en) | 2007-04-20 | 2007-04-20 | Semi-ring voltage equalizing type ring casing pressure sampling stephanoporate shaped hole plate flow rate sensor |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928029A (en) * | 2012-11-15 | 2013-02-13 | 天津大学 | Moisture two-phase flow measuring device with annular chamber gas-liquid separation pressure measuring device |
| CN102928027A (en) * | 2012-10-27 | 2013-02-13 | 江阴市神州测控设备有限公司 | Adjustable flow meter |
| CN102944267A (en) * | 2012-11-15 | 2013-02-27 | 天津大学 | Double-throttling three-differential-pressure wet-gas two-phase flow measurement system |
| CN103048019A (en) * | 2012-11-15 | 2013-04-17 | 天津大学 | Double differential pressure moisture flow measuring device based on long-throat-neck venturi |
| CN104948911A (en) * | 2014-03-27 | 2015-09-30 | 迪特里奇标准公司 | Adapter for inserting wafer ring between flanges of process piping |
| CN105928571A (en) * | 2016-06-21 | 2016-09-07 | 成都国光电子仪表有限责任公司 | Nozzle type flow meter |
| CN105953849A (en) * | 2016-06-21 | 2016-09-21 | 成都国光电子仪表有限责任公司 | Natural gas flow measurer |
| CN105973320A (en) * | 2016-06-21 | 2016-09-28 | 成都国光电子仪表有限责任公司 | High-precision balancing flowmeter |
| CN106017583A (en) * | 2016-06-21 | 2016-10-12 | 成都国光电子仪表有限责任公司 | Balanced flow meter |
| CN106092224A (en) * | 2016-06-21 | 2016-11-09 | 成都国光电子仪表有限责任公司 | A kind of effusion meter of band nozzle arrangements |
| CN106092220A (en) * | 2016-06-21 | 2016-11-09 | 成都国光电子仪表有限责任公司 | Orifice flowmeter |
| CN106123977A (en) * | 2016-06-21 | 2016-11-16 | 成都国光电子仪表有限责任公司 | A kind of differential pressure type flow meter |
| CN106123978A (en) * | 2016-06-21 | 2016-11-16 | 成都国光电子仪表有限责任公司 | A kind of natural gas orifice flowmeter |
| CN106123974A (en) * | 2016-06-21 | 2016-11-16 | 成都国光电子仪表有限责任公司 | Multiinjector balance flow meter |
| CN108489560A (en) * | 2018-04-26 | 2018-09-04 | 天津大学 | Vertical venturi moisture measuring device based on porous ring casing pressure vessel |
| CN108548575A (en) * | 2018-04-26 | 2018-09-18 | 天津大学 | A kind of throttling set pressure vessel for measuring flux of moisture |
| CN108931272A (en) * | 2017-05-27 | 2018-12-04 | 深圳市美好创亿医疗科技有限公司 | Porous differential pressure flow sensor and lung function instrument |
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2007
- 2007-04-20 CN CNU2007201240830U patent/CN201034650Y/en not_active Expired - Fee Related
Cited By (25)
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| CN102928027A (en) * | 2012-10-27 | 2013-02-13 | 江阴市神州测控设备有限公司 | Adjustable flow meter |
| CN102928029A (en) * | 2012-11-15 | 2013-02-13 | 天津大学 | Moisture two-phase flow measuring device with annular chamber gas-liquid separation pressure measuring device |
| CN102944267A (en) * | 2012-11-15 | 2013-02-27 | 天津大学 | Double-throttling three-differential-pressure wet-gas two-phase flow measurement system |
| CN103048019A (en) * | 2012-11-15 | 2013-04-17 | 天津大学 | Double differential pressure moisture flow measuring device based on long-throat-neck venturi |
| CN102944267B (en) * | 2012-11-15 | 2015-07-15 | 天津大学 | Double-throttling three-differential-pressure wet-gas two-phase flow measurement system |
| CN103048019B (en) * | 2012-11-15 | 2016-05-04 | 天津大学 | Based on two differential pressure flux of moisture measurement mechanisms of long throat venturi |
| CN102928029B (en) * | 2012-11-15 | 2016-05-04 | 天津大学 | With the moisture two-phase flowmeter device of ring casing gas-liquid isolation pressure vessel |
| CN104948911A (en) * | 2014-03-27 | 2015-09-30 | 迪特里奇标准公司 | Adapter for inserting wafer ring between flanges of process piping |
| US10345124B2 (en) | 2014-03-27 | 2019-07-09 | Dieterich Standard, Inc. | Adapter for inserting wafer ring between flanges of process piping |
| CN104948911B (en) * | 2014-03-27 | 2019-05-14 | 迪特里奇标准公司 | For being inserted into the adapter of intermediate plate ring between the flange of process piping |
| EP3123124A1 (en) * | 2014-03-27 | 2017-02-01 | Dieterich Standard, Inc. | Adapter for inserting wafer ring between flanges of process piping |
| CN106092224A (en) * | 2016-06-21 | 2016-11-09 | 成都国光电子仪表有限责任公司 | A kind of effusion meter of band nozzle arrangements |
| CN105953849A (en) * | 2016-06-21 | 2016-09-21 | 成都国光电子仪表有限责任公司 | Natural gas flow measurer |
| CN106092220A (en) * | 2016-06-21 | 2016-11-09 | 成都国光电子仪表有限责任公司 | Orifice flowmeter |
| CN106123977A (en) * | 2016-06-21 | 2016-11-16 | 成都国光电子仪表有限责任公司 | A kind of differential pressure type flow meter |
| CN106123978A (en) * | 2016-06-21 | 2016-11-16 | 成都国光电子仪表有限责任公司 | A kind of natural gas orifice flowmeter |
| CN106123974A (en) * | 2016-06-21 | 2016-11-16 | 成都国光电子仪表有限责任公司 | Multiinjector balance flow meter |
| CN105973320A (en) * | 2016-06-21 | 2016-09-28 | 成都国光电子仪表有限责任公司 | High-precision balancing flowmeter |
| CN105928571A (en) * | 2016-06-21 | 2016-09-07 | 成都国光电子仪表有限责任公司 | Nozzle type flow meter |
| CN106017583A (en) * | 2016-06-21 | 2016-10-12 | 成都国光电子仪表有限责任公司 | Balanced flow meter |
| CN108931272A (en) * | 2017-05-27 | 2018-12-04 | 深圳市美好创亿医疗科技有限公司 | Porous differential pressure flow sensor and lung function instrument |
| CN108548575A (en) * | 2018-04-26 | 2018-09-18 | 天津大学 | A kind of throttling set pressure vessel for measuring flux of moisture |
| CN108489560A (en) * | 2018-04-26 | 2018-09-04 | 天津大学 | Vertical venturi moisture measuring device based on porous ring casing pressure vessel |
| CN108548575B (en) * | 2018-04-26 | 2020-03-06 | 天津大学 | Throttling device pressure sampler for measuring wet gas flow |
| CN108489560B (en) * | 2018-04-26 | 2020-03-06 | 天津大学 | Vertical venturi moisture measuring device based on porous ring chamber pressure sampler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CHONGQING TUOZHAN AUTOMATION INSTRUMENT CO., LTD. Assignor: Xiang Jiacong Contract record no.: 2011500000058 Denomination of utility model: Semi-ring voltage equalizing type ring casing pressure sampling stephanoporate shaped hole plate flow rate sensor Granted publication date: 20080312 License type: Exclusive License Record date: 20110914 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20150420 |
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| EXPY | Termination of patent right or utility model |