CN210400481U - 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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- CN210400481U CN210400481U CN201921961077.XU CN201921961077U CN210400481U CN 210400481 U CN210400481 U CN 210400481U CN 201921961077 U CN201921961077 U CN 201921961077U CN 210400481 U CN210400481 U CN 210400481U
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- 238000004092 self-diagnosis Methods 0.000 title claims abstract description 11
- 230000003068 static effect Effects 0.000 claims abstract description 65
- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 abstract description 14
- 238000009825 accumulation Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a self-diagnosis, self-calibration, self-correction Pitot intelligent flowmeter, including Pitot sensor, a plurality of differential pressure transmitter and flow totalizer, Pitot sensor includes a plurality of static pressure connecting pipes and total pressure connecting pipe, still includes the sensor mount pad, and total pressure connecting pipe and static pressure connecting pipe all seal the last flange that passes the sensor mount pad, and a plurality of total pressure connecting pipes pass through respectively with the mouth of pipe at its top the connecting pipe respectively with corresponding differential pressure transmitter's malleation end link to each other, and the total pressure hole of every total pressure connecting pipe all is located the below of installation sleeve and arranges gradually along vertical direction; the static pressure guide pipes are respectively connected with the negative pressure ends of the corresponding differential pressure transmitters through the pressure guide pipes by pipe openings at the tops of the static pressure guide pipes, and the static pressure holes of each static pressure guide pipe are located below the mounting sleeve and are arranged gradually along the vertical direction. 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 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 full pressure and the static pressure of the fluid flowing in the pipeline and the fluid mechanics principle.
When the pitot flowmeter in the prior art measures the fluid flow in a pipeline, the measurement accuracy of the pitot flow sensor determines the measurement accuracy of the fluid flow in the pipeline finally, and if the errors of signals of full pressure and static pressure transmitted by a full pressure and static pressure guide pipe are large, the error of a final measurement result is large. The full pressure or static pressure signal is inaccurate due to a plurality of reasons, for example, when scaling, excessive dust accumulation and crystallization occur on the inner wall of the hole of the full pressure or static pressure hole, the output full pressure or static pressure signal changes greatly, so that the error of the measurement result 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 relates to a self-diagnosis, self-calibration, self-correction Pitot intelligent flowmeter, including Pitot sensor, differential pressure transmitter and flow totalizer, Pitot sensor includes static pressure connecting pipe and full pressure connecting pipe, the bottom of static pressure connecting pipe has the static pressure hole, the bottom of full pressure connecting pipe has the full pressure hole, the mouth of pipe at static pressure connecting pipe top passes through the connecting pipe and links to each other with differential pressure transmitter's negative pressure end, the mouth of pipe at full pressure connecting pipe top 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, Pitot sensor still include the sensor mount pad, this sensor mount pad has fixed continuous upper and lower flange, the bottom of lower flange even has the installation sleeve, full pressure connecting pipe and static pressure connecting pipe all seal and pass upper flange, the number of the full-pressure guide pipes is multiple, correspondingly, the number of the differential pressure transmitters is also multiple, the multiple full-pressure guide pipes are respectively connected with the positive pressure ends of the corresponding differential pressure transmitters through the pressure guide pipes by pipe orifices on the tops of the multiple full-pressure guide pipes, the full-pressure hole of each full-pressure guide pipe is located below the mounting sleeve, the axes of the full-pressure guide pipes are mutually parallel and located 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; correspondingly, the number of the static pressure guide pipes is also multiple, the static pressure guide pipes are respectively connected with the negative pressure ends of the corresponding differential pressure transmitters through the pressure guide pipes by pipe openings at the tops of the static pressure guide pipes, the static pressure holes of each static pressure guide pipe are located below the mounting sleeve, the axes of the static pressure guide pipes are parallel to each other and are located in the same plane with the axis of the full pressure guide pipe, and the static pressure holes at the bottoms of the static pressure guide pipes are arranged gradually along the vertical direction.
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 and the static pressure hole of static pressure connecting pipe bottom all are located the measurand pipeline. Because the full-pressure holes at the bottoms of the full-pressure guide pipes and the static-pressure holes at the bottoms of the static-pressure guide pipes are arranged gradually along the vertical direction, the method is equivalent to measuring the flow of fluid in the same pipeline by using a plurality of different Pitot-bar 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 a corresponding 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 the great a set of total pressure connecting pipe of well output measurement error and static pressure connecting pipe 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 flowmeter of the present invention.
Fig. 2 and 3 are the main schematic sectional structure of the pitot sensor, and reference numerals are made in the whole static pressure guide hole and the whole static pressure guide hole in fig. 2, and reference numerals are made in the sensor mounting seat, the whole pressure guide pipe axis and the static pressure guide pipe axis in fig. 3.
Detailed Description
Referring to fig. 1-3, the utility model relates to a self-diagnosis, self-calibration, self-correction Pitot intelligent flowmeter, including Pitot sensor 100, differential pressure transmitter 200 and flow totalizer 300, Pitot 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, full pressure connecting pipe 120's bottom has full pressure hole 121, the mouth of pipe at static pressure connecting pipe 110 top links to each other with differential pressure transmitter 200's negative pressure end through connecting pipe 130, the mouth of pipe at full pressure connecting pipe 120 top 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 the signal input part of flow totalizer 300 links to each other, Pitot sensor 100 still including sensor mount 140, this sensor mount has upper and lower flange 141, 142 that fixed link to each other, the bottom of lower flange 142 even has mounting sleeve 143, the full-pressure guide pipe 120 and the static pressure guide pipe 110 both hermetically penetrate through the upper connecting flange 141, the number of the full-pressure guide pipes 120 is multiple, correspondingly, the number of the differential pressure transmitters 200 is multiple, the full-pressure guide pipes are respectively connected with the positive pressure ends of the corresponding differential pressure transmitters 200 through the pressure guide pipes 130 by pipe orifices at the tops of the full-pressure guide pipes, the full-pressure hole 121 of each full-pressure guide pipe 120 is located below the mounting sleeve 143, and the axes h of the full-pressure guide 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; correspondingly, the number of the static pressure guide pipes 110 is also multiple, the number of the static pressure guide pipes 110 is equal to the number of the full pressure guide pipes 120, the static pressure guide pipes are respectively connected with the negative pressure ends of the corresponding differential pressure transmitters 200 through the pressure guide pipes 130 by pipe openings at the tops, the static pressure hole 111 of each static pressure guide pipe 110 is positioned below the mounting sleeve 143, and the static pressure guide pipes 110 are positionedAxis h of the crimp 1102Parallel to each other and to the axis h of the full pressure pipe 1201The static pressure holes 111 at the bottom of the static pressure guide pipes 110 are arranged in the same plane gradually along the vertical direction, that is, the static pressure holes 111 at the bottom of the static pressure guide pipes 110 are arranged along the vertical direction, and the distances between the adjacent static pressure holes are all equal.
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 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, it is different because of inserting the degree of depth in the pipeline that inserts and account for the pipeline proportion, when the medium flows, because of pipeline central velocity of flow and pipeline marginal 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 calculating the flow area of the medium and automatically correcting.
Claims (1)
1. A self-diagnosis, self-calibration and self-correction Pitot intelligent flowmeter comprises a Pitot sensor (100), a differential pressure transmitter (200) and a flow integrating instrument (300), wherein the Pitot 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 bottom of the full pressure pipe (120) is provided with a full pressure hole (121), a pipe orifice at the top of the static pressure pipe (110) is connected with a negative pressure end of the differential pressure transmitter (200) through the pressure pipe (130), a pipe orifice at the top of the full pressure pipe (120) is connected with a positive pressure end of the differential pressure transmitter (200) through the pressure pipe (130), a signal output end of the differential pressure transmitter (200) is connected with a signal input end of the flow integrating instrument (300), the Pitot sensor (100) further comprises a sensor mounting seat (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 flange (142) down, full pressure pipe (120) and static pressure pipe (110) all sealed flange (141) of passing, 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, the multiple full-pressure guide pipes are respectively connected with positive pressure ends of the corresponding differential pressure transmitters (200) through the pressure guide pipes (130) by pipe openings at the tops of the multiple full-pressure guide pipes, full-pressure holes (121) of each full-pressure guide pipe (120) are 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; correspondingly, the number of the static pressure guide pipes (110) is multiple, the static pressure guide pipes are respectively connected with the negative pressure end of the corresponding differential pressure transmitter (200) through the pressure guide pipes (130) by pipe openings at the tops of the static pressure guide pipes, the static pressure hole (111) of each static pressure guide pipe (110) is located below the mounting sleeve (143), the axes of the static pressure guide pipes (110) are parallel to each other and located in the same plane with the axis of the full pressure guide pipe (120), and the static pressure holes (111) at the bottoms of the static pressure guide pipes (110) are arranged gradually along the vertical direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921961077.XU CN210400481U (en) | 2019-11-14 | 2019-11-14 | Self-diagnosis, self-calibration and self-correction Pitotbar intelligent flowmeter |
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| CN201921961077.XU CN210400481U (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 |
|---|---|---|---|---|
| CN110617857A (en) * | 2019-11-14 | 2019-12-27 | 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 |
|---|---|---|---|---|
| CN110617857A (en) * | 2019-11-14 | 2019-12-27 | 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 |
Effective date of registration: 20210111 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. |
|
| TR01 | Transfer of patent right | ||
| 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. |
|
| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A self diagnosis, self calibration, and self correction Bitoba intelligent flowmeter Effective date of registration: 20231228 Granted publication date: 20200424 Pledgee: Tieling Branch of Shengjing Bank Co.,Ltd. Pledgor: Liaoning Bitobar Technology Co.,Ltd. Registration number: Y2023210000358 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |