CN203719701U - High-precision vortex flow meter - Google Patents

High-precision vortex flow meter Download PDF

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Publication number
CN203719701U
CN203719701U CN201420049803.1U CN201420049803U CN203719701U CN 203719701 U CN203719701 U CN 203719701U CN 201420049803 U CN201420049803 U CN 201420049803U CN 203719701 U CN203719701 U CN 203719701U
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China
Prior art keywords
vortex
pipe
pressure
measuring tube
flow
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Active
Application number
CN201420049803.1U
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Chinese (zh)
Inventor
金雪梅
李�东
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SHANGHAI KENT INTELLIGENCE METER CO Ltd
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SHANGHAI KENT INTELLIGENCE METER CO Ltd
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Priority to CN201420049803.1U priority Critical patent/CN203719701U/en
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Abstract

The utility model provides a high-precision vortex flow meter and relates to the technical field of measuring equipment. The high-precision vortex flow meter solves the technical problem that the existing flow meter cannot satisfy the precise measurement when pressure and temperature change. The high-precision vortex flow meter comprises a measuring pipe, a vortex signal converter and a flow and temperature compound sensor, wherein a vortex generating body is fixed inside the measuring pipe, the vortex signal converter is installed on the measuring pipe through a connecting rod, the flow and temperature compound sensor is installed on the measuring pipe, the signal output end of the flow and temperature compound sensor is electrically connected with the signal input end of the vortex signal converter, the connecting rod is provided with a pressure sensor, a pressure taking pipe is arranged on the measuring pipe, the signal output end of the pressure sensor is electrically connected with the signal input end of the vortex signal converter, the pipe mouth of one end of the pressure taking pipe stretches into the pipe cavity of the measuring pipe, and the pipe mouth of the other end of the pressure taking pipe is connected to a pressure taking head of the pressure sensor through a sampling controlling valve. The high-precision vortex flow meter is suitable for the flow, temperature and pressure measurement of high temperature fluid.

Description

High-precision vortex flowmeter
Technical field
The utility model relates to surveying instrument technology, particularly relates to a kind of technology of high-precision vortex flowmeter.
Background technology
The principle of work of swirl flowmeter is: insertion-individual cylindricality restraining mass (vortex generation post) in the tube chamber of measuring tube, when fluid flows through cylindricality restraining mass in the tube chamber of measuring tube, both sides, the rear portion of cylindricality restraining mass (with respect to direction of flow) will alternately produce vortex, due to the cross frequence of vortex and the flow velocity of fluid linear, as long as utilize flow sensor and vortex signal converter to detect the frequency of vortex separation, can calculate flow velocity or the flow of measuring tube inner fluid.
Advantages such as swirl flowmeter is because measuring accurately, simple in structure, convenient for installation and maintenance and being widely used.But existing swirl flowmeter can only be guaranteed to measure accurately under normal temperature and pressure conditions, once the working conditions such as temperature, pressure change, will bring error to measurement result.Therefore, existing swirl flowmeter needs plug-in tensimeter and thermometer conventionally, during measurement by plug-in tensimeter and the measured temperature and pressure data importing flowmeter integrating instrument of thermometer, flowmeter integrating instrument is according to the temperature and pressure data that import and measured data on flows, calculate final flow rate measurement result, to guarantee that swirl flowmeter can be realized accurately under various working conditions, measure, but this flow measurement mode need to be purchased three kinds of instrument (swirl flowmeters simultaneously, tensimeter, thermometer), it is higher that it measures cost, and install also very inconvenient, to surveying work, brought trouble.
Utility model content
For the defect existing in above-mentioned prior art, technical problem to be solved in the utility model is to provide and a kind ofly can reduces flow measurement cost, simplifies the high-precision vortex flowmeter of flow measurement operation.
In order to solve the problems of the technologies described above, a kind of high-precision vortex flowmeter provided by the utility model, comprises measuring tube, vortex signal converter, flow temperature complex sensor;
In described measuring tube, be fixed with swirl generating body, described vortex signal converter is arranged on measuring tube by a connecting rod;
Described flow temperature complex sensor is arranged on measuring tube, and the inductive head of flow temperature complex sensor stretches into the tube chamber of measuring tube, the signal input part of the signal output part electrical connection vortex signal converter of flow temperature complex sensor;
It is characterized in that: on described connecting rod, pressure transducer is housed, on described measuring tube, pressure pipe is housed;
The signal input part of the signal output part electrical connection vortex signal converter of described pressure transducer;
One end mouth of pipe of described pressure pipe stretches in the tube chamber of measuring tube, and the other end mouth of pipe is received the pressure head of pressure transducer by a controlling of sampling valve.
Further, on the outer wall of described connecting rod, be fixed with radiating fin.
The high-precision vortex flowmeter that the utility model provides, utilize flow temperature complex sensor and pressure transducer, can measure the flow of fluid, temperature, can measure hydrodynamic pressure again, can reduce flow measurement cost, simplify flow measurement operation, and pressure pipe can reduce the fluid temperature (F.T.) that flows to pressure transducer, thereby pressure survey is separated with temperature survey, can be in the situation that not affecting fluid temperature (F.T.) measurement, guarantee that the fluid temperature (F.T.) that arrives pressure transducer pressure head reaches the temperature range that pressure transducer adapts to, guarantee the normal pressure measurement of pressure transducer, be specially adapted to the flow of high temperature fluid, temperature, press force measurement.
Accompanying drawing explanation
Fig. 1 is the front view of the high-precision vortex flowmeter of the utility model the first embodiment;
Fig. 2 is the left view of the high-precision vortex flowmeter of the utility model the first embodiment;
Fig. 3 is the front view of the high-precision vortex flowmeter of the utility model the second embodiment;
Fig. 4 is the left view of the high-precision vortex flowmeter of the utility model the second embodiment.
Embodiment
Below in conjunction with accompanying drawing explanation, embodiment of the present utility model is described in further detail, but the present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof, all should list protection domain of the present utility model in.
As Figure 1-Figure 2, a kind of high-precision vortex flowmeter that the utility model the first embodiment provides, comprises measuring tube 11, vortex signal converter 12, flow temperature complex sensor 13;
In described measuring tube 11, be fixed with swirl generating body 18, described vortex signal converter 12 is arranged on measuring tube 11 by a connecting rod 14;
Described flow temperature complex sensor 13 is arranged on measuring tube 11, and the inductive head of flow temperature complex sensor 13 stretches into the tube chamber of measuring tube 11, the signal input part of the signal output part electrical connection vortex signal converter 12 of flow temperature complex sensor 13;
It is characterized in that: on described connecting rod 14, pressure transducer 15 is housed, on described measuring tube 11, pressure pipe 16 is housed;
The signal input part of the signal output part electrical connection vortex signal converter 12 of described pressure transducer 15;
One end mouth of pipe of described pressure pipe 16 stretches in the tube chamber of measuring tube 11, and the other end mouth of pipe is received the pressure head of pressure transducer 15 by a controlling of sampling valve 17.
As Figure 3-Figure 4, a kind of high-precision vortex flowmeter that the utility model the second embodiment provides, comprises measuring tube 21, vortex signal converter 22, flow temperature complex sensor 23;
In described measuring tube 21, be fixed with swirl generating body 28, described vortex signal converter 22 is arranged on measuring tube 21 by a connecting rod 24;
Described flow temperature complex sensor 23 is arranged on measuring tube 21, and the inductive head of flow temperature complex sensor 23 stretches into the tube chamber of measuring tube 21, the signal input part of the signal output part electrical connection vortex signal converter 22 of flow temperature complex sensor 23;
It is characterized in that: on described connecting rod 24, pressure transducer 25 is housed, on the outer wall of connecting rod, is fixed with radiating fin 29, on described measuring tube 21, pressure pipe 26 is housed;
The signal input part of the signal output part electrical connection vortex signal converter 22 of described pressure transducer 25;
One end mouth of pipe of described pressure pipe 26 stretches in the tube chamber of measuring tube 21, and the other end mouth of pipe is received the pressure head of pressure transducer 25 by a controlling of sampling valve 27.
The using method of first, second embodiment of the utility model is as follows:
Measuring tube is serially connected on fluid line, when fluid is flowed through measuring tube, the both sides, rear portion (with respect to direction of flow) of vortex generation post will alternately produce vortex, flow temperature complex sensor is passed to vortex signal converter after detecting the temperature of fluid and the frequency of vortex separation, pressure pipe will be directed to the pressure head of pressure transducer after segment fluid flow cooling, pressure transducer is passed to vortex signal converter after detecting the pressure of fluid, vortex signal converter is again by fluid temperature (F.T.), vortex shedding frequency and hydrodynamic pressure convert electric signal that can supplied for electronic device analysis to, by controlling the switching of controlling of sampling valve 27, can realize pressure survey controls.

Claims (2)

1. a high-precision vortex flowmeter, comprises measuring tube, vortex signal converter, flow temperature complex sensor;
In described measuring tube, be fixed with swirl generating body, described vortex signal converter is arranged on measuring tube by a connecting rod;
Described flow temperature complex sensor is arranged on measuring tube, and the inductive head of flow temperature complex sensor stretches into the tube chamber of measuring tube, the signal input part of the signal output part electrical connection vortex signal converter of flow temperature complex sensor;
It is characterized in that: on described connecting rod, pressure transducer is housed, on described measuring tube, pressure pipe is housed;
The signal input part of the signal output part electrical connection vortex signal converter of described pressure transducer;
One end mouth of pipe of described pressure pipe stretches in the tube chamber of measuring tube, and the other end mouth of pipe is received the pressure head of pressure transducer by a controlling of sampling valve.
2. high-precision vortex flowmeter according to claim 1, is characterized in that: on the outer wall of described connecting rod, be fixed with radiating fin.
CN201420049803.1U 2014-01-26 2014-01-26 High-precision vortex flow meter Active CN203719701U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420049803.1U CN203719701U (en) 2014-01-26 2014-01-26 High-precision vortex flow meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420049803.1U CN203719701U (en) 2014-01-26 2014-01-26 High-precision vortex flow meter

Publications (1)

Publication Number Publication Date
CN203719701U true CN203719701U (en) 2014-07-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420049803.1U Active CN203719701U (en) 2014-01-26 2014-01-26 High-precision vortex flow meter

Country Status (1)

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CN (1) CN203719701U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103808373A (en) * 2014-01-26 2014-05-21 上海肯特仪表股份有限公司 High-precision vortex flowmeter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103808373A (en) * 2014-01-26 2014-05-21 上海肯特仪表股份有限公司 High-precision vortex flowmeter

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