CN101251397A - Bypass in-line flowmeter - Google Patents
Bypass in-line flowmeter Download PDFInfo
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- CN101251397A CN101251397A CNA2008100236076A CN200810023607A CN101251397A CN 101251397 A CN101251397 A CN 101251397A CN A2008100236076 A CNA2008100236076 A CN A2008100236076A CN 200810023607 A CN200810023607 A CN 200810023607A CN 101251397 A CN101251397 A CN 101251397A
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Abstract
一种旁通式管路流量计，特别适用于大型管路的流量测量，在待测管路上并联一旁通管路，旁通管路上设有压差式流量计，压差式流量计上设有信号采集处理装置。通过测量不同流动状态下旁通管路的流量，即可实时换算出待测管路中的流量。由于不必直接测量大型管路内的流量，克服了大管径管路流量测量存在的准确性差的问题。其结构简单、测量方便、性能可靠、测量结果准确、具有广泛的实用性。
A bypass pipeline flowmeter is especially suitable for the flow measurement of large pipelines. A bypass pipeline is connected in parallel on the pipeline to be tested. There is a signal acquisition and processing device. By measuring the flow of the bypass pipeline under different flow conditions, the flow in the pipeline to be tested can be converted in real time. Since there is no need to directly measure the flow in a large pipeline, the problem of poor accuracy in flow measurement of a large pipeline is overcome. The utility model has the advantages of simple structure, convenient measurement, reliable performance, accurate measurement result and wide practicability.
Description
技术领域 technical field
本发明涉及测量管路流体流量的仪器仪表，具体地说，是一种测量管路流体流量的旁通式管路流量计。The invention relates to an instrument for measuring pipeline fluid flow, in particular to a bypass pipeline flowmeter for measuring pipeline fluid flow.
背景技术 Background technique
目前，大型管路的流量测量基本是采用流速测量法，即测量管线某个断面上有限个点的速度，通过计算得出该断面的流量。由于管路上流速分布的不均匀性，导致测量结果不够准确。此外，大管径管路的流量测量难度也比较大。At present, the flow measurement of large pipelines basically adopts the flow velocity measurement method, that is, the velocity of a limited number of points on a certain section of the pipeline is measured, and the flow of the section is obtained through calculation. Due to the inhomogeneity of flow velocity distribution on the pipeline, the measurement results are not accurate enough. In addition, the flow measurement of large-diameter pipelines is relatively difficult.
发明内容 Contents of the invention
本发明的目的是针对已有技术存在的问题，提供一种结构简单，测量结果准确，能够对大型管路流量进行测量的旁通式流量计。The object of the present invention is to solve the problems existing in the prior art, and provide a bypass flowmeter with simple structure, accurate measurement results and the ability to measure the flow of large pipelines.
本发明的旁通式管路流量计，在待测管路上并联一旁通管路，旁通管路上设有压差式流量计，压差式流量计上设有信号采集处理装置。In the bypass pipeline flowmeter of the present invention, a bypass pipeline is connected in parallel with the pipeline to be tested, a differential pressure flowmeter is provided on the bypass pipeline, and a signal acquisition and processing device is provided on the differential pressure flowmeter.
所述信号采集处理装置由差压变送器和流量积算仪构成，差压变送器与连接在旁通管路上的压差式流量计连接，流量积算仪与差压变送器相连。The signal acquisition and processing device is composed of a differential pressure transmitter and a flow totalizer, the differential pressure transmitter is connected to a differential pressure flowmeter connected to the bypass pipeline, and the flow totalizer is connected to the differential pressure transmitter .
本发明在待测管路上并联一旁通管路，通过旁通管路上设置的压差式流量计，测量不同流动状态下旁通管路的流量，据此即可实时换算出待测管路中的流量。由于不必直接测量大型管路内的流量，克服了大型管路流量测量存在的准确性差的问题，特别适用于大型管路的流量测量。其结构简单、测量方便、性能可靠、测量结果准确、具有广泛的实用性。In the present invention, a bypass pipeline is connected in parallel on the pipeline to be tested, and the flow rate of the bypass pipeline under different flow conditions is measured through a differential pressure flowmeter set on the bypass pipeline, and the flow rate of the bypass pipeline in the pipeline to be tested can be converted in real time accordingly. traffic. Since there is no need to directly measure the flow in large pipelines, the problem of poor accuracy in flow measurement of large pipelines is overcome, and it is especially suitable for flow measurement of large pipelines. The utility model has the advantages of simple structure, convenient measurement, reliable performance, accurate measurement result and wide practicability.
附图说明 Description of drawings
附图是本发明结构主视图。Accompanying drawing is the structure front view of the present invention.
图中：待测管路1，旁通管路2，压差式流量计3，差压变送器4，流量积算仪5。In the figure: the pipeline to be tested 1, the bypass pipeline 2, the
具体实施方式 Detailed ways
下面结合附图对本发明的一个实施例作进一步的描述：An embodiment of the present invention will be further described below in conjunction with accompanying drawing:
附图所示，在待测流量的一段平直大型管路上，即待测管路1上并联一直径约为100mm的旁通管路2，旁通管路2的直径一般为待测管路直径的十分之一。在旁通管路2上装有一压差式流量计3，通过压差式流量计3可以测量旁通管路2中的过流量。压差式流量计3上装有差压变送器4，差压变送器4信号输出端上连有流量积算仪5，压差式流量计3的压差信号通过差压变送器4，送入流量积算仪5，得到旁通管路2中的过流量，由此即可换算出待测管路1中的流量。As shown in the attached figure, on a section of the straight large pipeline of the flow rate to be measured, that is, a bypass pipeline 2 with a diameter of about 100 mm is connected in parallel to the pipeline to be tested. The diameter of the bypass pipeline 2 is generally the diameter of the pipeline to be tested. one tenth of the diameter. A
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100236076A CN101251397A (en) | 2008-04-09 | 2008-04-09 | Bypass in-line flowmeter |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100236076A CN101251397A (en) | 2008-04-09 | 2008-04-09 | Bypass in-line flowmeter |
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| CN101251397A true CN101251397A (en) | 2008-08-27 |
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| CNA2008100236076A Pending CN101251397A (en) | 2008-04-09 | 2008-04-09 | Bypass in-line flowmeter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829829A (en) * | 2012-08-23 | 2012-12-19 | 郑州光力科技股份有限公司 | Method and device for detecting ultrasonic flow by time-difference method |
| CN103017844A (en) * | 2012-11-26 | 2013-04-03 | 昆山北极光电子科技有限公司 | Low cost air flow measuring method |
| CN105953848A (en) * | 2016-05-23 | 2016-09-21 | 西北工业大学 | Differential-pressure linear flowmeter |
| CN109210828A (en) * | 2018-09-13 | 2019-01-15 | 广东芬尼克兹节能设备有限公司 | Heat pump unit and heat pump unit with pulse flowmeter |
| WO2022038402A1 (en) * | 2020-08-19 | 2022-02-24 | Krishnaswamy Kumar | A bypass flowmeter and a method for flowrate measurement through sloped pipelines and penstocks |
| CN115219169A (en) * | 2022-06-13 | 2022-10-21 | 中国电子科技集团公司第三十研究所 | A method for testing uniformity of liquid-cooled channel distribution network design of liquid-cooled cold plate |
-
2008
- 2008-04-09 CN CNA2008100236076A patent/CN101251397A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829829A (en) * | 2012-08-23 | 2012-12-19 | 郑州光力科技股份有限公司 | Method and device for detecting ultrasonic flow by time-difference method |
| CN103017844A (en) * | 2012-11-26 | 2013-04-03 | 昆山北极光电子科技有限公司 | Low cost air flow measuring method |
| CN105953848A (en) * | 2016-05-23 | 2016-09-21 | 西北工业大学 | Differential-pressure linear flowmeter |
| CN105953848B (en) * | 2016-05-23 | 2019-07-05 | 西北工业大学 | A kind of linear flowmeter of differential pressure |
| CN109210828A (en) * | 2018-09-13 | 2019-01-15 | 广东芬尼克兹节能设备有限公司 | Heat pump unit and heat pump unit with pulse flowmeter |
| WO2022038402A1 (en) * | 2020-08-19 | 2022-02-24 | Krishnaswamy Kumar | A bypass flowmeter and a method for flowrate measurement through sloped pipelines and penstocks |
| CN115219169A (en) * | 2022-06-13 | 2022-10-21 | 中国电子科技集团公司第三十研究所 | A method for testing uniformity of liquid-cooled channel distribution network design of liquid-cooled cold plate |
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Open date: 20080827 |