CN105716670A - Multichannel rectangular needle tube flow measurement device - Google Patents
Multichannel rectangular needle tube flow measurement device Download PDFInfo
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- CN105716670A CN105716670A CN201610251451.1A CN201610251451A CN105716670A CN 105716670 A CN105716670 A CN 105716670A CN 201610251451 A CN201610251451 A CN 201610251451A CN 105716670 A CN105716670 A CN 105716670A
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- pipe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
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- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to the technical field of flow measurement equipment and particularly relates to a multichannel rectangular needle tube flow measurement device. The multichannel rectangular needle tube flow measurement device comprises a mounting seat, wherein a measurement module and a processing module are arranged on the mounting seat; the measurement module comprises a plurality of measurement sensors, measurement sensors comprise measurement ends and detection rods, and the lengths of the measurement ends of the measurement sensors are different; high-pressure measuring pipe and low-pressure measuring pipes are arranged in the detection rods, and the cross sections of probes are V-shaped; and the processing module comprises a differential pressure transmitter which is connected with two pressure balancing pipes, and the two pressure balancing pipes are respectively connected with pressure guiding pipes of the high-pressure measuring pipes and low-pressure measuring pipes. According to the multichannel rectangular needle tube flow measurement device, by increasing measurement points, the mean flow rate of the pipeline can be more approximated, so that the measurement accuracy is greatly improved, and the measurement range ratio is increased. Meanwhile, the multichannel rectangular needle tube flow measurement device is excellent in anti-blocking performance and good in reliability and stability.
Description
Technical field
The present invention relates to flow measurement technical field, particularly relate to a kind of multichannel square needle tubing flow measurement device.
Background technology
At present, generally generally using inserting-type flowmeter for large diameter pipeline gas flow, wherein most is differential pressure type inserting-type flowmeter, such as mean velocity tube flowmeter, Pi Tuoba effusion meter etc..The flow in pipeline is measured by differential pressure type inserting-type flowmeter.
But, the effusion meter measurement that the many employings of city head are independent, measuring point is one, it is difficult to perfect, desirably to reflect pipeline medium mean flow rate, so that the accuracy of instrument measurement, range ratio are affected, and, easily there is the phenomenons such as blocking, less stable in common inserting-type flowmeter.Along with the quantifying further of energy conservation, accuracy, market in urgent need one and blockage resisting, simultaneously range ratio, accuracy height, stable and reliable operation, plug-in type gas flowmeter that maintenance is little.
Summary of the invention
It is an object of the invention to propose a kind of multichannel square needle tubing flow measurement device, to solve the range ratio existed in prior art, the technical problem that accuracy is low, operation stability is poor, maintenance is big.
For reaching this purpose, the present invention by the following technical solutions:
A kind of multichannel square needle tubing flow measurement device, including mounting seat, described mounting seat is provided with measurement module and processing module；
The multiple measurement sensor of described measurement module, described measurement sensor includes measuring end, and the length measuring end of each described measurement sensor is different, and described measurement sensor includes detection bar, the bottom of described detection bar is connected to probe, and part described detection bar and described probe are described measurement end；
High pressure pressure pipe and low pressure pressure pipe it is provided with in described detection bar, described probe includes two pipelines, the top of two described pipelines is connected with described high pressure pressure pipe and described low pressure pressure pipe respectively, the bottom of two described pipelines is equipped with angular cutouts, the cross section of described probe is V-shaped, and the end of described high pressure pressure pipe and described low pressure pressure pipe is connected to connecting pipe；
Described processing module includes differential pressure transmitter, and described differential pressure variator is connected to two balance pipes, and two described balance pipes are connected with the described connecting pipe of described high pressure pressure pipe and described low pressure pressure pipe respectively.
Further, multiple described measurement sensors are located along the same line, along top to the increasing lengths measuring end measuring sensor described in tail end direction；
The angular cutouts of the described pipeline that high pressure pressure pipe described in each described measurement sensor connects is towards direction, top.
Further, described measurement sensor also includes pilot block, and the bottom of described pilot block is connected to sleeve pipe, and the bottom of described sleeve pipe is socketed the end of described detection bar；
Being provided with two transmission pipes in described pilot block, one end of two described transmission pipes is connected with described high pressure pressure pipe and described low pressure pressure pipe respectively, and the other end is connected with described connecting pipe respectively.
Further, the pipeline in described high pressure pressure pipe, described low pressure pressure pipe and described probe is pipe, and described high pressure pressure pipe is identical with the diameter of described low pressure pressure pipe, and more than the diameter of the pipeline in described probe.
Further, described processing module also includes valve body, and described differential pressure variator is connected with described balance pipe by valve body.
Further, described measurement module includes 3 measurement sensors.
Further, described mounting seat is provided with jack hole, and described detection bar is through described jack hole, and described detection bar is welded to connect with described jack hole.
A kind of multichannel square needle tubing flow measurement device provided by the invention, permutation and combination by multiple measurement sensors, the different layouts of pressure measurement points, differential pressure transmitter high-pressure side is caused after each measurement sensor pressure point high-side signal (i.e. stagnation pressure signal) is average in the balance pipe of high pressure, differential pressure transmitter low-pressure side is caused after low-side signal (i.e. static pressure signal) is average in the balance pipe of low pressure, the differential pressure square value that differential pressure transmitter is surveyed is directly proportional to pipeline mean flow rate, thus drawing pipeline flow value.
This multichannel square needle tubing flow measurement device is relative to the flow measurement of single effusion meter, owing to measuring the increase of point, being better able to approximate projection pipeline mean flow rate, therefore accuracy of measurement is greatly improved (1.0 grades), range ratio increases (10:1).Simultaneously, the angular cutouts that during use, high pressure pressure pipe connects is towards media flow direction, namely meeting stream side is higher-pressure region, irregular eddy current is formed during media flow, drive impurity flows, stoping impurity particle to enter probe and pressure pipe, multichannel square needle tubing flow measurement device anti-blocking performance is superior, device reliability, has good stability.
Accompanying drawing explanation
Fig. 1 is the use state diagram of the multichannel square needle tubing flow measurement device that the embodiment of the present invention provides；
Fig. 2 is the structural representation measuring sensor of the multichannel square needle tubing flow measurement device that the embodiment of the present invention provides.
In figure:
1, mounting seat；2, sensor is measured；3, differential pressure transmitter；4, balance pipe；5, valve body；6, field pipes；21, detection bar；22, probe；23, high pressure pressure pipe；24, low pressure pressure pipe；25, connecting pipe；26, pilot block；27, sleeve pipe.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with accompanying drawing and by detailed description of the invention.
As depicted in figs. 1 and 2, a kind of multichannel square needle tubing flow measurement device, including mounting seat 1, mounting seat 1 is provided with measurement module and processing module；
Measurement module includes multiple measurement sensor 2, measuring sensor 2 to include measuring end, the length measuring end of each measurement sensor 2 is different, measures sensor 2 and includes detection bar 21, the bottom of detection bar 21 is connected to probe 22, and part detection bar 21 and probe 22 are for measuring end；
It is provided with high pressure pressure pipe 23 and low pressure pressure pipe 24 in detection bar 21, probe 22 includes two pipelines, the top of two pipelines is connected with high pressure pressure pipe 23 and low pressure pressure pipe 24 respectively, the bottom of two pipelines is equipped with angular cutouts, the cross section of probe 22 is V-shaped, and the end of high pressure pressure pipe 23 and low pressure pressure pipe 24 is connected to connecting pipe 25；
Processing module includes differential pressure transmitter 3, and differential pressure transmitter 3 is connected to two balance pipes 4, and two balance pipes 4 are connected with the connecting pipe 25 of high pressure pressure pipe 23 and low pressure pressure pipe 24 respectively.
Measurement device in use, is primarily present two defects, and one is that measurement apparatus clogging easily occurs, and what impact was measured is normally carried out, and another is the precision measured.
In order to realize anticlogging situation, the form of probe 22 employing angular cutouts, the angular cutouts that its mesohigh pressure pipe 23 connects is arranged with media flow convection current, in flow process, media impingement inclined plane forms irregular eddy current, thus driving impurity to flow, impurity particle is stoped to enter probe 22 and pressure pipe.Wherein, further, the pipeline in high pressure pressure pipe 23, low pressure pressure pipe 24 and probe 22 is pipe, and high pressure pressure pipe 23 is identical with the diameter of low pressure pressure pipe 24, and more than the diameter of the pipeline in probe 22.Pressure tubing internal diameter increases design (being generally not less than Φ 8), it is prevented that large granular impurity enters or even blocks, and further increases anti-blocking performance, and pressure is stable.
Improving certainty of measurement by arranging multiple measurement sensor 2, multiple measurement sensors 2 are located along the same line, along top to the increasing lengths measuring end of tail end orientation measurement sensor 2；
The angular cutouts of the pipeline that each measurement sensor 2 mesohigh pressure pipe 23 connects is towards direction, top.
During installation, mounting seat 1 is arranged on field pipes 6, along media flow direction, the two ends measuring sensor 2 are gradually increased, wherein, the length of concrete the inserted field pipes 6 of each measurement end is determined according to according to Chebyshev method, and then the mean flow rate of more satisfactory reflection pipeline medium.During execute-in-place, mounting seat 1 and field pipes 6 can be welded to connect.
Measuring sensor 2 and also include pilot block 26, the bottom of pilot block 26 is connected to sleeve pipe 27, the end of the bottom socket detection bar 21 of sleeve pipe 27；
Being provided with two transmission pipes in pilot block 26, one end of two transmission pipes is connected with high pressure pressure pipe 23 and low pressure pressure pipe 24 respectively, and the other end is connected with connecting pipe 25 respectively.
Whole measurement sensor 2 is set to Split type structure by pilot block 26, is namely connected detection bar 21 and connecting pipe 25 by pilot block 26 respectively, adopts Split type structure to be convenient for measuring the manufacturing of sensor 2, be beneficial to and the assembly of mounting seat 1, it is provided that work efficiency meanwhile.
Processing module also includes valve body 5, and differential pressure transmitter 3 is connected with balance pipe 4 by valve body 5.Adopt valve body 5 to control simple and fast, and precision is higher.
Preferably, measurement module includes 3 measurement sensors 2.
Mounting seat 1 is provided with jack hole, and detection bar 21 is through jack hole, and detection bar 21 is welded to connect with jack hole.During use, probe 22 and detection bar 21 are had certain impulsive force by media flow, therefore, adopt the mode being welded to connect, and connect more firm, and stability is higher.
The know-why of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explanation principles of the invention, and can not be construed to limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art need not pay performing creative labour can associate other detailed description of the invention of the present invention, and these modes fall within protection scope of the present invention.
Claims (7)
1. a multichannel square needle tubing flow measurement device, it is characterised in that including mounting seat (1), described mounting seat (1) is provided with measurement module and processing module；
Described measurement module includes multiple measurement sensor (2), described measurement sensor (2) includes measuring end, the length measuring end of each described measurement sensor (2) is different, described measurement sensor (2) includes detection bar (21), the bottom of described detection bar (21) is connected to probe (22), part described detection bar (21) and described probe (22) for described measurement end；
High pressure pressure pipe (23) and low pressure pressure pipe (24) it is provided with in described detection bar (21), described probe (22) includes two pipelines, the top of two described pipelines is connected with described high pressure pressure pipe (23) and described low pressure pressure pipe (24) respectively, the bottom of two described pipelines is equipped with angular cutouts, the cross section of described probe (22) is V-shaped, and the end of described high pressure pressure pipe (23) and described low pressure pressure pipe (24) is connected to connecting pipe (25)；
Described processing module includes differential pressure transmitter (3), described differential pressure variator (3) is connected to two balance pipes (4), and two described balance pipes (4) are connected with the described connecting pipe (25) of described high pressure pressure pipe (23) and described low pressure pressure pipe (24) respectively.
2. multichannel square needle tubing flow measurement device according to claim 1, it is characterized in that, multiple described measurement sensors (2) are located along the same line, along top to the increasing lengths measuring end measuring sensor (2) described in tail end direction；
The angular cutouts of the described pipeline that high pressure pressure pipe (23) described in each described measurement sensor (2) connects is towards direction, top.
3. multichannel square needle tubing flow measurement device according to claim 1, it is characterized in that, described measurement sensor (2) also includes pilot block (26), the bottom of described pilot block (26) is connected to sleeve pipe (27), and the bottom of described sleeve pipe (27) is socketed the end of described detection bar (21)；
Two transmission pipes it are provided with in described pilot block (26), one end of two described transmission pipes is connected with described high pressure pressure pipe (23) and described low pressure pressure pipe (24) respectively, and the other end is connected with described connecting pipe (25) respectively.
4. multichannel square needle tubing flow measurement device according to claim 1, it is characterized in that, pipeline in described high pressure pressure pipe (23), described low pressure pressure pipe (24) and described probe (22) is pipe, described high pressure pressure pipe (23) is identical with the diameter of described low pressure pressure pipe (24), and more than the diameter of the pipeline in described probe (22).
5. multichannel square needle tubing flow measurement device according to claim 1, it is characterized in that, described processing module also includes valve body (5), and described differential pressure variator (3) is connected with described balance pipe (4) by valve body (5).
6. multichannel square needle tubing flow measurement device according to claim 1, it is characterised in that described measurement module includes 3 described measurement sensors (2).
7. multichannel square needle tubing flow measurement device according to claim 1, it is characterized in that, described mounting seat (1) is provided with jack hole, and described detection bar (21) is through described jack hole, and described detection bar (21) is welded to connect with described jack hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610251451.1A CN105716670A (en) | 2016-04-21 | 2016-04-21 | Multichannel rectangular needle tube flow measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610251451.1A CN105716670A (en) | 2016-04-21 | 2016-04-21 | Multichannel rectangular needle tube flow measurement device |
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| CN105716670A true CN105716670A (en) | 2016-06-29 |
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| CN201610251451.1A Pending CN105716670A (en) | 2016-04-21 | 2016-04-21 | Multichannel rectangular needle tube flow measurement device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289420A (en) * | 2016-07-22 | 2017-01-04 | 蚌埠大洋传感系统工程有限公司 | A kind of liquid flow sensor intelligence control system |
| CN106289421A (en) * | 2016-07-22 | 2017-01-04 | 蚌埠大洋传感系统工程有限公司 | A kind of flow transducer control system |
| CN110631648A (en) * | 2019-11-14 | 2019-12-31 | 上海权宥环保科技有限公司 | A Sensor Combined Bitobah Flowmeter |
| CN110686735A (en) * | 2019-11-14 | 2020-01-14 | 上海权宥环保科技有限公司 | Self-diagnosis, self-calibration, self-correction Bitoba smart flowmeter |
| CN113156161A (en) * | 2021-03-15 | 2021-07-23 | 华能(广东)能源开发有限公司海门电厂 | Boiler pipeline overgrate air on-line monitoring system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289420A (en) * | 2016-07-22 | 2017-01-04 | 蚌埠大洋传感系统工程有限公司 | A kind of liquid flow sensor intelligence control system |
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| CN110631648A (en) * | 2019-11-14 | 2019-12-31 | 上海权宥环保科技有限公司 | A Sensor Combined Bitobah Flowmeter |
| CN110686735A (en) * | 2019-11-14 | 2020-01-14 | 上海权宥环保科技有限公司 | Self-diagnosis, self-calibration, self-correction Bitoba smart flowmeter |
| CN113156161A (en) * | 2021-03-15 | 2021-07-23 | 华能(广东)能源开发有限公司海门电厂 | Boiler pipeline overgrate air on-line monitoring system |
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Application publication date: 20160629 |
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