CN102928027A - Adjustable flow meter - Google Patents
Adjustable flow meter Download PDFInfo
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- CN102928027A CN102928027A CN2012104186208A CN201210418620A CN102928027A CN 102928027 A CN102928027 A CN 102928027A CN 2012104186208 A CN2012104186208 A CN 2012104186208A CN 201210418620 A CN201210418620 A CN 201210418620A CN 102928027 A CN102928027 A CN 102928027A
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Abstract
The invention discloses an adjustable flow meter. The flow meter comprises a positive pressure measuring flange and a negative pressure measuring flange, which are arranged in pair, wherein an adjustable throttling body is arranged between the positive pressure measuring flange and the negative pressure measuring flange; a sealing pad is arranged between the adjustable throttling body, and the positive pressure measuring flange and the negative pressure measuring flange; radial through holes are respectively arranged on the lateral wall of the positive pressure measuring flange and the negative pressure measuring flange; one ends of the radial through holes on the lateral wall of the positive pressure measuring flange are connected with a positive pressure measuring pipe; one ends of the radial through holes on the lateral wall of the negative pressure measuring flange are connected with a negative pressure measuring pipe; 4-6 through holes are uniformly distributed on a panel defined by the adjustable throttling body within a connection face of the positive pressure measuring flange and the negative pressure measuring flange; and a bump is arranged on the lateral face of the panel between the 4-6 through holes. The adjustable flow meter has special self-balance rectifying structure design, and four throttling holes are uniformly and symmetrically distributed, so that a flow velocity distribution curve of upstream fluid can be repeatedly rectified; and the requirement on a straight pipe section is greatly reduced.
Description
Technical field
The present invention relates to a kind of flowmeter for measuring fluid parameter, be specifically related to a kind of adjusting type flowmeter.
Background technology
Flowmeter is a kind of admeasuring apparatus that is installed between fluid circuit, comprises liquid and gas at the fluid of this indication.In the internal structure of flowmeter forms, a sensor is arranged, in order to data such as the flow (metering) of sensing (measurement) fluid, flow velocitys (meter speed), and make record (meter reading), then can flowmeter originally with it display box do directly to show (numeral shows or electronic type shows all have), or with record (meter reading) data via long-distance transmission, and does in addition demonstration or storage at a distance.This wherein, flowmeter is because of the difference of its internal sensor binding mode, can divide into vane-wheel type flowmeter, electromagnetic flowmeter, ultrasonic flow and take into account the multiple kenel of eddy-current flowmeter etc.
In fact, flowmeter is a kind of and the dynamic admeasuring apparatus fluid Long contact time.Refer to that it is that " dynamic " is the fluid environment because comprising the flow field that fluid consists of and surrounding sensor in the flowmeter, and the effect situation that flowmeter itself carries out sensing (measurement) all is continuous dynamic action, therefore also operating condition and the residing environmental aspect of flowmeter of flowmeter itself, all may have influence at any time the accuracy of flowmeter, and cause the data such as flow, flow velocity of measured fluid to produce error.This kind affects flowmeter accuracy possibility disappearance because of external factor, is that the oneself knows or prior self-early warning in advance at present known mass flow meter.The known mass flow meter can only loyally be noted down fluid data get off according to itself operating condition and residing environmental aspect at present, even if the operating condition of flowmeter itself oneself when deviation (for example rotate and break down) or the residing environment generation of flowmeter undesirable condition (for example muddy the and impact of water quality is flowed) occur through, the known mass flow meter also can only loyally reflect fluid data, and the early warning that can't go to do any oneself's detection is moved, must wait until that record or monitoring personnel realize when resulting data recording a period of time is undesired, just can carry out service work, but when often this moment, oneself was catastrophic failure, cause the numerous and diverse of maintenance and more cost.This shows, can't the oneself detect the maximum disappearance that early early warning can say present known mass flow meter.
Moreover, the known mass flow meter all can only be made unidirectional (forward) and measure, because flowmeter is to be assembled according to the order with fluid relativity (contact) by some concrete spare parts, therefore all be to flow into relative position and the interactively that removes to arrange each spare part as action direction from forward take fluid in the design, and after completing, the sampled-current body carries out parameter correction from the mode of the actual inflow of forward deduces, and proofreaies and correct according to this and obtains correct measurement.All be to flow into from forward for fluid to be the action direction design and manufacture because of flowmeter namely, therefore the known mass flow meter is used for being bound to produce gross error when oppositely measuring, this is because the fluid self-reversal is when flowing into, the order of each spare part of flowing through is opposite, so it is also fully different that each spare part is subject to the relativity of fluid, cause the result who oppositely measures to differ quite large with the forward measurement.So generally speaking, all can flow in marked effect in appearance after the manufacturing of known mass flow meter is finished, with installation, also can state on the operational manual and only be used as forward and unidirectional measurement, not be suitable for reverse measurement.
Because flowmeter is a kind ofly to be combined by concrete spare part, with with the dynamic admeasuring apparatus of fluid Long contact time, add it often is to be embedded in for a long time under the earth's surface, be subject to the impact of various pressure, earthquake and pipeline inside water pressure, therefore use day long afterwards, can leakage loss occur built on the sand because engaging unavoidably.The known mass flow meter can't be made any caution for leakage loss phenomenon system, so also aobvious for undesirable.
And only has a circulation aperture at the restriction device of existing flowmeter, make fluid lose perfect condition after the throttling, after making fluid pass through throttling bodies, easily form larger and asymmetrically distributed vortex, these larger vortexs easily make signal produce larger fluctuation, and the problem such as signal unstability may occur.
Summary of the invention
The object of the invention is to overcome the defective that exists in the prior art, provide a kind of measuring-signal accurate and stable adjusting type flowmeter.
For achieving the above object, technical scheme of the present invention is a kind of adjusting type flowmeter of design, it is characterized in that, described flowmeter comprises officially enroll pressure flange and the negative pressure flange that pairing arranges, be provided with the adjusting type throttling bodies between pressure flange and the negative pressure flange officiallying enroll, be provided with sealing gasket between the joint face of adjusting type throttling bodies and officially enroll pressure flange and negative pressure flange, sidewall at officially enroll pressure flange and negative pressure flange is respectively equipped with radial direction through hole, radial direction through hole one end at the pressure flange sidewall of officiallying enroll is connected with positive pressure pipe, is connected with negative pressure pipe at radial direction through hole one end of bearing pressure flange sidewall; The adjusting type throttling bodies is evenly equipped with 4 ~ 6 through holes at pressure flange and the negative pressure flange connection surface panel with interior besieged city of officiallying enroll, and the side of described panel between 4 ~ 6 through holes is provided with projection.
For the preferred technical scheme of eddy current that further reduces fluid is, described projection is cone-shaped body or is the convex surface body, described cone-shaped body or for the convex surface body towards the pressure flange of officiallying enroll.
That described pressure flange and the negative pressure flange of officiallying enroll links together by securing member for the ease of the assembling of flowmeter or the further preferred technical scheme of maintenance.
That described pressure flange and the negative pressure flange of officiallying enroll is symmetrical structure for the ease of the further preferred technical scheme of the processing of flowmeter
That described adjusting type throttling bodies is provided be used to the web member of hanging or installing at the outer wall of officiallying enroll between pressure pipe and the negative pressure pipe for the ease of the further preferred technical scheme of the installation of flowmeter.
Processing for the ease of flowmeter is that described joint face of officiallying enroll between pressure flange and the negative pressure flange is planar annular with using further preferred technical scheme.
That described pressure flange and the negative pressure flange connection surface of officiallying enroll is take the panel in interior besieged city as round panel with using further preferred technical scheme for the ease of the processing of flowmeter.
Preferred technical scheme is in order to make the fluid signal that flows through flowmeter more tend towards stability further, is evenly equipped with 4 through holes at described pressure flange and the negative pressure flange connection surface of officiallying enroll with the panel in interior besieged city.
For the further preferred technical scheme of the starting material of saving flowmeter in the situation of proof strength is to be provided with reinforcement at described outer wall of officiallying enroll pressure flange and negative pressure flange.
For the ease of the processing of flowmeter with using further preferred technical scheme be, described positive pressure pipe, negative pressure pipe with the pressure flange of officiallying enroll, bear the pressure flange by being welded to connect or or being threaded.
Advantage of the present invention and beneficial effect are:
1, this flowmeter requires low to straight length;
This adjusting type flowmeter has unique distributing symmetrically from balanced rectifier structure design and four throttle orifices, can be to the again rectification of velocity flow profile curve of upstream fluid, so that at the scene also can the uniform fluid velocity flow profile under the extreme harsh mounting condition, greatly shortage to the requirement of straight length, straight length is generally 1D behind the front 2D before and after it, minimum is 0.5D behind the 1D in the past, thereby saves a large amount of straight lengths, especially the pipeline of special expensive material.
2, high, the good reproducibility of measuring accuracy.
This adjusting type flowmeter uniqueness from balanced adjusting type throttling bodies structural design, after making fluid pass through throttling bodies, form very little and symmetrical vortex, these equivalent equally distributed micro cyclones not only make signal fluctuation little, and can produce high frequency voltage regulation signal by a narrow margin, the signal of output is accurately moved, even in the situation of low discharge, low differential pressure, still can keep higher measuring accuracy and stability, be particularly suitable for the measurement of low-density, low flow rate of gas.
Have symmetrical four pore structure characteristics, can carry out equilibrium by stream field, eddy current, vibration and signal noise have been reduced, flowing field stability improves greatly, make the linearity promote 5 ~ 10 times than orifice plate, repeatability has improved 60%, less than or equal to 0.10%, from its combination property, this adjusting type flowmeter belongs to high-grade flowmeter ranks.3, wear-resistant, long-time stability are good.
This adjusting type flowmeter uniqueness from balanced adjusting type throttling bodies structural design, can guide fluid throttling in flowing, the throttle orifice that simultaneously its four holes equivalence distributes symmetrically has the acute angle water conservancy diversion of accurate processing, and the surface working precision of adjusting type throttling bodies and roughness had be strict with and quality control, this design, overcome the right angle burr porous restriction device that occurs on the existing market, because its machining precision to the hole does not require, do not process acute angle yet, make the easily distortion and wearing and tearing after fluid washes away for a long time of porous section fluid, the β value changes greatly after causing the wearing and tearing of porous accumulative total, can't revise, and measurement is caused inaccurate design defect, eliminate fluid washing away and wear and tear the adjusting type throttling bodies to greatest extent, make its β value stabilization constant, have long-time stability, can satisfy the requirement of device long-term operation.
4, measurement range is wide, and the permanent compression loss is little, can realize energy-saving and emission-reduction.
This adjusting type flowmeter uniqueness from balanced adjusting type throttling bodies structural design, can guide fluid throttling in flowing, overcome the defective that the conventional throttle part forces fluid flip-flop streamline, make signal stabilization, this has guaranteed can select the differential pressure lower than other differential pressure flowmeter when full scale is measured, and the permanent compression loss of adjusting type flowmeter is reduced, and plays energy-conservation effect, with its high-acruracy survey, can satisfy factory to the ERP requirement of water, vapour, the control of wind energy consumption.
Compare with the conventional throttle device, this adjusting type flowmeter has greatly improved the measurement range ratio, result of study shows, Reynolds number was greater than 50000 o'clock, select suitable aperture parameters, this adjusting type flowmeter no maximum is according to the needs of commercial measurement practical application, the routine measurement range ratio is 10:1, selects suitable parameter can arrive 30:1.Reynolds number is between 200 ~ 10
7The β value can be selected between 0.25 ~ 0.9, and the pressure loss is 1/2 ~ 1/5 of conventional throttle device.
5, the energy-conservation while is more safe and reliable.
The evenly distribution throttling bodies design of infinitesimal calculus four holes equivalence of this adjusting type flowmeter uniqueness, both effectively reduced the large crushing that a hole causes, the throttling element bulk strength of having avoided again porous restriction more to cause reduces the potential safety hazard of bringing, and improve its intensity itself by the thickness that increases the porous section fluid, friction area and the duration of contact of fluid and porous restriction surface have just further been prolonged, thereby the pressure loss is increased, be unfavorable for energy-conservation.Four holes equivalence evenly distribution throttling guarantees throttling bodies intensity when reducing crushing, more safe and reliable.
6, the scope of application
This adjusting type flowmeter working temperature, pressure depend on material and the grade of pipeline and flange, and working temperature can reach 850 ℃, pressure 42.0MPa.Be applicable to oil, petrochemical industry, chemical industry, metallurgical (non-ferrous metal and iron and steel), thermoelectric, long-distance transport pipes, heat distribution pipe network, municipal works (thermal treatment and combustion gas), pharmacy, papermaking, the ocean, environmental protection, tobacco, offshore oil platform, measure the gas phase under the various working conditions in the engineering such as nuclear industry and Aero-Space, mix gas phase, liquid phase, multi-phase fluid, gas-liquid two-phase (liquid phase mass ratio≤5% in the moisture), dust, high flow rate, the liquid phase that contains solid suspended particle, solvent, vibration, electromagnetic interference (EMI), the flow of the fluids such as corrosivity.
This adjusting type flowmeter can be designed to left and right sides full symmetric, therefore can measure very easily bidirectional flow.
Description of drawings
Fig. 1 is the structural representation of adjusting type flowmeter of the present invention.
Among the figure: 1, the pressure flange of officiallying enroll; 2, negative pressure flange; 3, adjusting type throttling bodies; 4, sealing gasket; 5, radial direction through hole; 6, positive pressure pipe; 7, negative pressure pipe; 8, through hole; 9, projection; 10, securing member; 11, web member.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
As shown in Figure 1, the present invention is a kind of adjusting type flowmeter, this flowmeter comprises officially enroll pressure flange 1 and the negative pressure flange 2 that pairing arranges, be provided with adjusting type throttling bodies 3 between pressure flange 1 and the negative pressure flange 1 officiallying enroll, be provided with sealing gasket 4 between the joint face of adjusting type throttling bodies 3 and officially enroll pressure flange 1 and negative pressure flange 2, the sidewall of pressure flange 1 with negative pressure flange 2 is respectively equipped with radial direction through hole 5 officiallying enroll, radial direction through hole 5 one ends at pressure flange 1 sidewall of officiallying enroll are connected with positive pressure pipe 6, are connected with negative pressure pipe 7 at radial direction through hole 5 one ends of bearing pressure flange 2 sidewalls; Adjusting type throttling bodies 3 is evenly equipped with 4 ~ 6 through holes 8 at pressure flange 1 and the negative pressure flange 2 joint faces panel with interior besieged city of officiallying enroll, and the side of described panel between 4 ~ 6 through holes 8 is provided with projection 9.
In the present invention for the preferred embodiment of eddy current that further reduces fluid is, described protruding 9 be cone-shaped body or are the convex surface body, described cone-shaped body or be that the convex surface body is towards the pressure flange of officiallying enroll.
Assembling or maintenance further preferred embodiment for the ease of flowmeter is that the described pressure flange 1 of officiallying enroll links together by securing member 10 with negative pressure flange 2 in the present invention.
Processing further preferred embodiment for the ease of flowmeter is in the present invention, and the described pressure flange 1 of officiallying enroll is symmetrical structure with negative pressure flange 2
Installation further preferred embodiment for the ease of flowmeter is in the present invention, and described adjusting type throttling bodies 3 is provided be used to the web member 11 of hanging or installing at the outer wall of officiallying enroll between pressure pipe 7 and the negative pressure pipe 7.
Processing for the ease of flowmeter is that described joint face of officiallying enroll between pressure flange 1 and the negative pressure flange 2 is planar annular with using further preferred embodiment in the present invention.
That described pressure flange 1 and negative pressure flange 2 joint faces of officiallying enroll are take the panel in interior besieged city as round panel in the present invention with using further preferred embodiment for the ease of the processing of flowmeter.
In the present invention in order to make the fluid signal that the flows through flowmeter further preferred embodiment that more tends towards stability be, be evenly equipped with 4 through holes 8 at described pressure flange 1 and negative pressure flange 2 joint faces of officiallying enroll with the panel in interior besieged city.
For the starting material further preferred embodiment of saving flowmeter in the situation of proof strength is, be provided with reinforcement at described outer wall of officiallying enroll pressure flange 1 and negative pressure flange 2 in the present invention.
For the ease of the processing of flowmeter with using further preferred embodiment be in the present invention, described positive pressure pipe 6, negative pressure pipe 7 with the pressure flange 1 of officiallying enroll, bear pressure flange 2 by being welded to connect or or being threaded.
This adjusting type flowmeter has carried out great improvement to the conventional throttle device, and through test of long duration, application and data accumulation, it has been inherited, and traditional differential pressure flowmeter is simple in structure, safe and reliable, the advantage of easy access, has again the notable feature of balanced rectification.The conventional throttle device only has a circulation aperture, makes fluid lose perfect condition after the throttling; And this adjusting type flow is in respect of four function holes and middle double action from balanced rectifier structure-adjusting type throttling bodies, can be rectified into ideal fluid to the flow field equilibrium to greatest extent, can calculate ducted flow with measuring differential pressure value according to Bernoulli equation, fluid is minimized by adjusting type throttling bodies backwash simultaneously, produce by a narrow margin signal of high frequency, make the signal of output accurate and stable.Calculate volumetric flow rate, mass rate according to Bernoulli equation.
Formula:
This is novel from balanced rectification adjusting type flowmeter, can be to the again rectification of velocity flow profile curve of upstream fluid, and the variation of this throttle style has brought the revolutionary innovation of differential pressure type flow measurement technology to break through and has used.This adjusting type flowmeter almost is applicable to all fluid measurements, and this adjusting type flowmeter can be widely applied to the industries such as oil, chemical industry, metallurgy, electric power, rock gas, water treatment.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. adjusting type flowmeter, it is characterized in that, described flowmeter comprises officially enroll pressure flange and the negative pressure flange that pairing arranges, be provided with the adjusting type throttling bodies between pressure flange and the negative pressure flange officiallying enroll, be provided with sealing gasket between the joint face of adjusting type throttling bodies and officially enroll pressure flange and negative pressure flange, sidewall at officially enroll pressure flange and negative pressure flange is respectively equipped with radial direction through hole, radial direction through hole one end at the pressure flange sidewall of officiallying enroll is connected with positive pressure pipe, is connected with negative pressure pipe at radial direction through hole one end of bearing pressure flange sidewall; The adjusting type throttling bodies is evenly equipped with 4 ~ 6 through holes at pressure flange and the negative pressure flange connection surface panel with interior besieged city of officiallying enroll, and the side of described panel between 4 ~ 6 through holes is provided with projection.
2. such as the described adjusting type flowmeter of claim l, it is characterized in that described projection is cone-shaped body or for the convex surface body, described cone-shaped body or for the convex surface body towards the pressure flange of officiallying enroll.
3. adjusting type flowmeter as claimed in claim 2 is characterized in that, described pressure flange and the negative pressure flange of officiallying enroll links together by securing member.
4. adjusting type flowmeter as claimed in claim 3 is characterized in that, described pressure flange and the negative pressure flange of officiallying enroll is symmetrical structure.
5. adjusting type flowmeter as claimed in claim 4 is characterized in that, described adjusting type throttling bodies is provided be used to the web member of hanging or installing at the outer wall of officiallying enroll between pressure pipe and the negative pressure pipe.
6. adjusting type flowmeter as claimed in claim 5 is characterized in that, described joint face of officiallying enroll between pressure flange and the negative pressure flange is planar annular.
7. adjusting type flowmeter as claimed in claim 6 is characterized in that, described pressure flange and the negative pressure flange connection surface of officiallying enroll is take the panel in interior besieged city as round panel.
8. adjusting type flowmeter as claimed in claim 7 is characterized in that, is evenly equipped with 4 through holes at described pressure flange and the negative pressure flange connection surface of officiallying enroll with the panel in interior besieged city.
9. adjusting type flowmeter as claimed in claim 8 is characterized in that, is provided with reinforcement at described outer wall of officiallying enroll pressure flange and negative pressure flange.
10. such as the described adjusting type flowmeter of any one in the claim 1 to 9, it is characterized in that, described positive pressure pipe, negative pressure pipe with the pressure flange of officiallying enroll, bear the pressure flange by being welded to connect or or being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104186208A CN102928027A (en) | 2012-10-27 | 2012-10-27 | Adjustable flow meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104186208A CN102928027A (en) | 2012-10-27 | 2012-10-27 | Adjustable flow meter |
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| CN102928027A true CN102928027A (en) | 2013-02-13 |
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| CN2012104186208A Pending CN102928027A (en) | 2012-10-27 | 2012-10-27 | Adjustable flow meter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019851A (en) * | 2014-05-07 | 2014-09-03 | 合肥江航飞机装备有限公司 | Metering hole switching mechanism for gas orifice plate flowmeter |
| CN104266689A (en) * | 2014-07-22 | 2015-01-07 | 江阴市神州测控设备有限公司 | Adjusting-type symmetric flowmeter |
| CN105814410A (en) * | 2013-12-26 | 2016-07-27 | 株式会社富士金 | Flow passage sealing structure |
| CN108593017A (en) * | 2018-04-08 | 2018-09-28 | 江阴市节流装置厂有限公司 | A kind of Multifunctional blast volume measuring device |
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| CN2821533Y (en) * | 2005-09-23 | 2006-09-27 | 李吉男 | Flow saving stable flow type vortex street flowmeter |
| CN201034650Y (en) * | 2007-04-20 | 2008-03-12 | 项家从 | Semi-ring voltage equalizing type ring casing pressure sampling stephanoporate shaped hole plate flow rate sensor |
| CN201476819U (en) * | 2009-07-29 | 2010-05-19 | 银川融神威自动化仪表厂(有限公司) | Balanced-type V-shaped cone flow meter |
| CN202869557U (en) * | 2012-10-27 | 2013-04-10 | 江阴市神州测控设备有限公司 | Regulating type flowmeter |
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2012
- 2012-10-27 CN CN2012104186208A patent/CN102928027A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2821533Y (en) * | 2005-09-23 | 2006-09-27 | 李吉男 | Flow saving stable flow type vortex street flowmeter |
| CN201034650Y (en) * | 2007-04-20 | 2008-03-12 | 项家从 | Semi-ring voltage equalizing type ring casing pressure sampling stephanoporate shaped hole plate flow rate sensor |
| CN201476819U (en) * | 2009-07-29 | 2010-05-19 | 银川融神威自动化仪表厂(有限公司) | Balanced-type V-shaped cone flow meter |
| CN202869557U (en) * | 2012-10-27 | 2013-04-10 | 江阴市神州测控设备有限公司 | Regulating type flowmeter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105814410A (en) * | 2013-12-26 | 2016-07-27 | 株式会社富士金 | Flow passage sealing structure |
| CN104019851A (en) * | 2014-05-07 | 2014-09-03 | 合肥江航飞机装备有限公司 | Metering hole switching mechanism for gas orifice plate flowmeter |
| CN104266689A (en) * | 2014-07-22 | 2015-01-07 | 江阴市神州测控设备有限公司 | Adjusting-type symmetric flowmeter |
| CN108593017A (en) * | 2018-04-08 | 2018-09-28 | 江阴市节流装置厂有限公司 | A kind of Multifunctional blast volume measuring device |
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Application publication date: 20130213 |