CN210533449U - Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter - Google Patents
Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter Download PDFInfo
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- CN210533449U CN210533449U CN201921961273.7U CN201921961273U CN210533449U CN 210533449 U CN210533449 U CN 210533449U CN 201921961273 U CN201921961273 U CN 201921961273U CN 210533449 U CN210533449 U CN 210533449U
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- 238000004092 self-diagnosis Methods 0.000 title claims abstract description 11
- 230000003068 static effect Effects 0.000 claims abstract description 63
- 238000009434 installation Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 14
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 2
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Abstract
The utility model discloses a self-diagnosis, self calibration, self-correction Pitot intelligent flowmeter, including Pitot flow sensor, differential pressure transmitter and flow totalizer, Pitot flow sensor includes 1 static pressure connecting pipe and a plurality of total pressure connecting pipe, differential pressure transmitter's quantity is a plurality of, still including the sensor mount pad, every total pressure connecting pipe links to each other with its total pressure interface positive pressure end through connecting pipe and corresponding differential pressure transmitter respectively, the total pressure hole of every total pressure connecting pipe all is located the telescopic below of sensor mount pad bottom installation and arranges gradually along vertical direction, connecting pipe on the static pressure connecting pipe static pressure interface links to each other with a plurality of differential pressure transmitter's negative pressure end respectively through a plurality of branch connecting pipes, a plurality of differential pressure transmitter's signal output part respectively with the corresponding signal input part of flow totalizer links to each other. The utility model discloses use the fluid flow in the same pipeline of Pitotbar flowmeter measurement of a plurality of differences in other words, the measuring result is accurate relatively.
Description
Technical Field
The utility model relates to a Pitotbar flowmeter, specifically speaking relate to a self diagnosis, self calibration, self-correction Pitotbar intelligent flow meter.
Background
At present, the flow measuring devices for measuring the flow of fluid in a pipeline have more types, and the Pitotbar flowmeter has simple structure, convenient installation and relatively high measurement precision and is widely applied to measuring the flow of fluid in the pipeline. When the Pitot-bar flowmeter is used, the Pitot-bar flow sensor is vertically inserted into a pipeline from the side wall of the pipeline, a full pressure hole of a pressure taking head of the Pitot-bar flow sensor faces the incoming flow direction of fluid, a static pressure hole faces the outgoing flow direction of the fluid, when the fluid flows in the pipeline, a full pressure interface and a static pressure interface at the upper end of a pressure guide pipe of the Pitot-bar flow sensor respectively output full pressure and static pressure signals of the fluid flowing in the pipeline, the full pressure and static pressure signals of the fluid in the pipeline transmitted by the Pitot-bar flow sensor are converted into standard current signals of 4-20 mA by the differential pressure transmitter and then transmitted to the flow integrating instrument, and the flow of the fluid in the pipeline can be finally calculated in the flow integrating instrument according to the fluid mechanics principle according to the full pressure and the static pressure of the fluid flowing in the pipeline.
When the pitot flowmeter in the prior art measures the fluid flow in a pipeline, a static pressure signal derived from a static pressure pipe in the pitot flow sensor is usually relatively stable, and the measurement precision is mainly determined by whether a full pressure signal derived from the full pressure pipe is accurate or not. The full-pressure signal is inaccurate due to a plurality of reasons, for example, when the inner wall of the hole is scaled, the dust is accumulated too much and the hole is crystallized, the output full-pressure signal changes greatly, and the measurement precision error is large.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a self-diagnosis, self-calibration, self-correction Pitotbar intelligent flow meter that can obtain relatively accurate measuring result when measuring fluid flow in the pipeline.
In order to solve the technical problem, the utility model discloses a self-diagnosis, self-calibration, self-correction Pitot intelligent flowmeter, including Pitot flow sensor, differential pressure transmitter and flow totalizer, Pitot flow sensor includes static pressure connecting pipe and full pressure connecting pipe, the bottom of static pressure connecting pipe has the static pressure hole, the top has the static pressure interface, the bottom of full pressure connecting pipe has the full pressure hole, the top has the full pressure interface, the static pressure interface of static pressure connecting pipe passes through the connecting pipe and links to each other with differential pressure transmitter's negative pressure end, the full pressure interface of full pressure connecting pipe passes through the connecting pipe and links to each other with differential pressure transmitter's positive pressure end, differential pressure transmitter's signal output part with the signal input part of flow totalizer links to each other, still including the sensor mount pad, this sensor mount pad has upper and lower flange that fixed links to each other, lower flange's bottom even has the installation sleeve, the full-pressure guide pipes and the static pressure guide pipes hermetically penetrate through the upper connecting flange, the number of the full-pressure guide pipes is multiple, correspondingly, the number of the differential pressure transmitters is also multiple, each full-pressure guide pipe is connected with the positive pressure end of the corresponding differential pressure transmitter through the pressure guide pipe by virtue of a full-pressure interface of the full-pressure guide pipe, the full-pressure holes of each full-pressure guide pipe are positioned below the mounting sleeve, the axes of the full-pressure guide pipes are parallel to each other and positioned in the same plane, and the full-pressure holes at the bottoms of the full-pressure guide pipes are arranged gradually along the vertical direction; the number of the static pressure guide pipes is 1, and the pressure guide pipes on the static pressure interface of the static pressure guide pipes are respectively connected with the negative pressure ends of the differential pressure transmitters through a plurality of branch pressure guide pipes; and the signal output ends of the differential pressure transmitters are respectively connected with the corresponding signal input ends of the flow integrating instrument.
As the improvement of the utility model, the static pressure hole of static pressure pipe bottom is located the installation sleeve.
As a further improvement of the utility model, the static pressure hole of static pressure pipe bottom is located flange's bottom.
Adopt self diagnosis, self calibration, the self-correction Pitot intelligent flow meter of above-mentioned structure, the installation sleeve through sensor mount pad bottom during the use cooperatees with the measurand pipeline the utility model provides a Pitot flow sensor adorns on the measurand pipeline, and the total pressure hole of total pressure connecting pipe bottom is whole to be located the measurand pipeline. Because the full-pressure holes at the bottoms of the full-pressure guide pipes are arranged gradually along the vertical direction, the method is equivalent to measuring the fluid flow in the same pipeline by using a plurality of different Pitotbar flow meters, the measurement result is the average value of all the measurement results, the measurement result is relatively accurate, and the measurement precision is higher; when a group of differential pressure signals output by a certain full-pressure guide pipe and the static pressure guide pipe are transmitted to the flow integrating instrument through the corresponding differential pressure transmitter, and the difference value between the integrated flow value of the flow integrating instrument and the average value of all measurement results exceeds a certain range, the integrating instrument can output the average value of other measurement results, and still can obtain relatively accurate measurement results. The utility model discloses in the static pressure hole of static pressure pipe bottom is located the installation sleeve, and static pressure output signal is comparatively stable, and the static pressure hole of preferred static pressure pipe bottom is located flange's bottom. The utility model discloses the great total pressure connecting pipe of well output measurement error can be maintained or changed during the flowmeter maintenance.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is the main sectional structure schematic diagram of the self-diagnosis, self-calibration, self-correction Pitotbar intelligent flow meter of the present invention.
Fig. 2 is the main sectional structure schematic diagram of the pitot-bar flow sensor of an embodiment of the present invention, and the static pressure hole at the bottom of the static pressure pipe is located at the bottom of the upper connecting flange.
Fig. 3 is a schematic main sectional structure view of a pitot-bar flow sensor according to another embodiment of the present invention, in which a static pressure hole at the bottom of a static pressure impulse pipe is located in a mounting sleeve.
Detailed Description
Referring to fig. 1-3, the utility model discloses a self-diagnosis, self-calibration, self-correction Pitot bar intelligent flowmeter, including Pitot bar flow sensor 100, differential pressure transmitter 200 and flow totalizer 300, Pitot bar flow sensor 100 includes static pressure connecting pipe 110 and full pressure connecting pipe 120, static pressure connecting pipe 110's bottom has static pressure hole 111, the top has static pressure interface 112, full pressure connecting pipe 120's bottom has full pressure hole 121, the top has full pressure interface 122, static pressure connecting pipe 110 static pressure interface 112 links to each other with differential pressure transmitter 200's negative pressure end through connecting pipe 130, full pressure interface 122 of full pressure connecting pipe 120 links to each other with differential pressure transmitter 200's positive pressure end through connecting pipe 130, differential pressure transmitter 200's signal output part with flow totalizer 300's signal input part links to each other, still include sensor mount 140, this sensor mount has the last of fixed linking to each other, Lower flange 141, 142, even have installation sleeve 143 at the bottom of lower flange 142, full pressure pipe 120 and static pressure pipe 110 all sealed pass upper flange 141, its characterized in that: the total-pressure guiding pipes 120 are multiple in number, correspondingly, the differential pressure transmitters 200 are also multiple in number, each total-pressure guiding pipe is connected with the positive pressure end of the corresponding differential pressure transmitter 200 through the pressure guiding pipe 130 by the total-pressure interface 122 of the total-pressure guiding pipe, the total-pressure hole 121 of each total-pressure guiding pipe 120 is located below the mounting sleeve 143, and the axes h of the total-pressure guiding pipes 120 are1The full-pressure holes 121 at the bottoms of the full-pressure guide pipes 120 are arranged in a gradual manner along the vertical direction, that is, the full-pressure holes 121 at the bottoms of the full-pressure guide pipes 120 are arranged along the vertical direction, and the distances between the adjacent full-pressure holes are equal; the number of the static pressure guide pipes 110 is 1, and the static pressure guide pipes are staticThe pressure guide pipe 130 on the static pressure interface 112 of the pressure guide pipe 110 is respectively connected with the negative pressure ends of the differential pressure transmitters through a plurality of branch pressure guide pipes 131; the signal output ends of the differential pressure transmitters 200 are respectively connected with the corresponding signal input ends of the flow totalizer 300. The static pressure hole 111 at the bottom of the static pressure pipe 110 is located in the mounting sleeve 143, and preferably, the static pressure hole 111 at the bottom of the static pressure pipe 110 is located at the bottom of the upper connecting flange 141.
The utility model discloses a structural condition when self-diagnosis, self calibration, self-correction Pitot intelligent flow meter adorn on measurand pipeline 1 is shown simultaneously in FIG. 1, and FIG. 1 is the installation sleeve 143 of connecting flange bottom under the Pitot flow sensor with its mount pad and is adorned on measurand pipeline 1 with the pipeline cooperation.
The utility model discloses in differential pressure between each malleation route and the negative pressure route, because of inserting the pipeline in the depth of penetration account for the pipeline proportion different, when the medium flows, because of pipeline central velocity of flow and pipeline edge velocity of flow are different, there is certain proportion in the differential pressure between each malleation route and the negative pressure route, the scale deposit is that the pipeline internal diameter reduces in the pipeline, insert the change of sensor proportion in the pipeline this moment, there is certain proportion in the differential pressure between each malleation route and the negative pressure route to change, the integrating instrument is through the relation of record differential pressure proportional relation and the pipeline scale deposit condition, calculate the pipeline scale deposit, thereby calculate the flow area of medium, automatic correction.
Claims (3)
1. A self-diagnosis, self-calibration and self-correction Pitot intelligent flowmeter comprises a Pitot flow sensor (100), a differential pressure transmitter (200) and a flow integrating instrument (300), wherein the Pitot flow sensor (100) comprises a static pressure pipe (110) and a full pressure pipe (120), the bottom of the static pressure pipe (110) is provided with a static pressure hole (111), the top end of the static pressure pipe is provided with a static pressure interface (112), the bottom of the full pressure pipe (120) is provided with a full pressure hole (121), the top end of the full pressure pipe is provided with a full pressure interface (122), the static pressure interface (112) of the static pressure pipe (110) is connected with the negative pressure end of the differential pressure transmitter (200) through the pressure pipe (130), the full pressure interface (122) of the full pressure pipe (120) is connected with the positive pressure end of the differential pressure transmitter (200) through the pressure pipe (130), the signal output end of the differential pressure transmitter (200) is connected with the signal input end of the flow integrating, still including sensor mount pad (140), this sensor mount pad has fixed upper and lower flange (141, 142) that link to each other, and even there is installation sleeve (143) bottom of lower flange (142), full pressure pipe (120) and static pressure pipe (110) all sealed pass upper flange (141), its characterized in that: the number of the full-pressure guide pipes (120) is multiple, correspondingly, the number of the differential pressure transmitters (200) is also multiple, each full-pressure guide pipe is connected with the positive pressure end of the corresponding differential pressure transmitter (200) through the pressure guide pipe (130) by a full-pressure interface (122), the full-pressure hole (121) of each full-pressure guide pipe (120) is located below the mounting sleeve (143), the axes of the full-pressure guide pipes (120) are parallel to each other and located in the same plane, and the full-pressure holes (121) at the bottoms of the full-pressure guide pipes (120) are gradually arranged along the vertical direction; the number of the static pressure guide pipes (110) is 1, and the pressure guide pipes (130) on the static pressure interface (112) of the static pressure guide pipes (110) are respectively connected with the negative pressure ends of the differential pressure transmitters through a plurality of branch pressure guide pipes (131); and the signal output ends of the differential pressure transmitters (200) are respectively connected with the corresponding signal input ends of the flow integrating instrument (300).
2. The self-diagnostic, self-calibrating, self-correcting Pitotbar intelligent flow meter of claim 1, wherein: the static pressure hole (111) at the bottom of the static pressure guide pipe (110) is positioned in the mounting sleeve (143).
3. The self-diagnostic, self-calibrating, self-correcting Pitotbar intelligent flow meter of claim 2, wherein: and the static pressure hole (111) at the bottom of the static pressure guide pipe (110) is positioned at the bottom of the upper connecting flange (141).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921961273.7U CN210533449U (en) | 2019-11-14 | 2019-11-14 | Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter |
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| CN201921961273.7U CN210533449U (en) | 2019-11-14 | 2019-11-14 | Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686735A (en) * | 2019-11-14 | 2020-01-14 | 上海权宥环保科技有限公司 | Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686735A (en) * | 2019-11-14 | 2020-01-14 | 上海权宥环保科技有限公司 | Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210118 Address after: 112600 No. 265, Ling Dong Street, Tieling Economic Development Zone, Tieling, Liaoning Patentee after: Liaoning pitotbar Polytron Technologies Inc. Address before: 201600 building 24, 506 South Ring Road, Songjiang District, Shanghai Patentee before: SHANGHAI QUANYOU ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 265 Lingdong Street, Tieling Economic Development Zone, Tieling City, Liaoning Province, 112366 Patentee after: Liaoning Bitobar Technology Co.,Ltd. Address before: 112600 No. 265, Ling Dong Street, Tieling Economic Development Zone, Tieling, Liaoning Patentee before: Liaoning pitotbar Polytron Technologies Inc. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Self diagnosis, self calibration, and self correction of Bitoba intelligent flow meters Effective date of registration: 20231228 Granted publication date: 20200515 Pledgee: Tieling Branch of Shengjing Bank Co.,Ltd. Pledgor: Liaoning Bitobar Technology Co.,Ltd. Registration number: Y2023210000358 |