CN206470284U - The measurement apparatus of gas in pipelines flow velocity - Google Patents

The measurement apparatus of gas in pipelines flow velocity Download PDF

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Publication number
CN206470284U
CN206470284U CN201720104743.2U CN201720104743U CN206470284U CN 206470284 U CN206470284 U CN 206470284U CN 201720104743 U CN201720104743 U CN 201720104743U CN 206470284 U CN206470284 U CN 206470284U
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gas
temperature
pipeline
release
source
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CN201720104743.2U
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Chinese (zh)
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方毅芳
刘刚
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Mechanical Industry Instrument And Meter Complex Art Institute For Economic Research
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Mechanical Industry Instrument And Meter Complex Art Institute For Economic Research
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Abstract

The utility model discloses a kind of measurement apparatus of gas in pipelines flow velocity, including the first temperature sensor, second temperature sensor, temperature acquisition analysis system and source of the gas release system, first temperature sensor and second temperature sensor are arranged on pipeline, and be connected with temperature acquisition analysis system, temperature acquisition analysis system is connected with power supply, source of the gas release system is arranged on pipeline, source of the gas release system includes gas source supply device, high pressure release pipe and release buffer head, gas source supply device discharges pipe by high pressure and is connected with release buffer head, the temperature for the search gas that gas source supply device discharges into pipeline is higher or lower than the temperature of fluids within pipes.The utility model is quickly and accurately measured to the gas flow in pipeline.

Description

The measurement apparatus of gas in pipelines flow velocity
Technical field
The utility model is related to the technical field of gas flow rate measurement, more particularly to one kind regard temperature as tracer, profit The device measured with high temperature or cryogenic gas as search gas to chimneying flow velocity.
Background technology
Gas flow rate or flow measurement are an importances of gage work, and the measuring instrument of current gas flow is very Many, such as orifice flowmeter, vortex-shedding meter, turbine flowmeter, though these measuring instruments are widely used, there is respective lack Point and application limitation, when especially being measured in impure more gas piping, precision is low, abrasion weight, short life.And use Tracer gas technique is measured, then not by pipe shape, the velocity flow profile influence of gaseous impurity and gas in pipeline, conversely Ground, for the pipeline that bend pipe and valve etc. are complicated, can just promote the mixing of gas, improve the degree of accuracy of flow measurement.
Chinese patent 201120220959.8 discloses the device that a kind of utilization search gas measures air channel volume, and China Patent 201120264047.0 discloses a kind of device of on-line calibration gas flow meter in pipeline, and it is required to search gas Gas concentration after well mixed is analyzed.And in reality, by underground coal mine spacial influence, gas ventilation pipeline is short, Gas flow is small, and search gas is not easy to be well mixed.Therefore, pipeline stream is measured to short distance using tracer gas technique merely Speed has certain limitation.Because temperature sensor is compared to gas sensor fast response time, measurement error is small, therefore, it can Using high temperature or cryogenic gas as search gas, change the measurement for carrying out flow velocity using the temperature fluctuation of pipeline interior air-flow.
Chinese patent 201010103917.6 discloses a kind of groundwater velocity and direction detection side using temperature as tracer Method and device, it only by mode of heating, is designed for flow rate of water flow measurement, due to being that temperature is all placed around heating source Sensor is spent, its air current flow can be influenceed so putting it into pipeline and carrying out flow measurement.
Accordingly, it would be desirable to research and develop a kind of new gas in pipelines flow rate measuring device, both it is adapted to short distance pipeline, is adapted to again Gas flow is small, does not influence pipeline interior air-flow to flow.
Utility model content
The purpose of this utility model is there is provided a kind of measurement apparatus of gas in pipelines flow velocity, the device can quickly, it is accurate Really the gas flow in pipeline is measured.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that:A kind of gas in pipelines flow velocity Measurement apparatus, including the first temperature sensor, second temperature sensor, temperature acquisition analysis system and source of the gas release system, the One temperature sensor and second temperature sensor are arranged on pipeline, and are connected with temperature acquisition analysis system, and temperature is adopted Set analysis system is connected with power supply, and source of the gas release system is arranged on pipeline, and source of the gas release system includes gas source supply device, high Pressure release pipe and release buffer head, gas source supply device discharge pipe by high pressure and are connected with release buffer head, gas source supply device The temperature of the search gas discharged into pipeline is higher or lower than the temperature of fluids within pipes.The fluid is gaseous fluid.
First temperature sensor and second temperature sensor are used for the temperature for monitoring gas in pipelines fluid, temperature acquisition point Analysis system is used for the temperature data for gathering the first temperature sensor and second temperature sensor detection, and data point are carried out to it Analysis.
A kind of measurement apparatus of foregoing gas in pipelines flow velocity, is set between the temperature acquisition analysis system and power supply There is power switch.
A kind of measurement apparatus of foregoing gas in pipelines flow velocity, the setting height(from bottom) and second of first temperature sensor The setting height(from bottom) of temperature sensor is identical.First temperature sensor and second temperature sensor are arranged on same absolute altitude, can be protected Demonstrate,prove the accuracy of temperature survey.
A kind of measurement apparatus of foregoing gas in pipelines flow velocity, one end of the high pressure release pipe is arranged in pipeline, The other end is arranged on outside pipeline.
A kind of measurement apparatus of foregoing gas in pipelines flow velocity, the release buffer head is arranged in pipeline.
Compared with prior art, the utility model in air-flow upstream by setting source of the gas to discharge system, and moment discharges on a small quantity High-temperature gas or cryogenic gas, swim set two temperature sensors to carry out temperature survey at same absolute altitude under a gas flow, pass through temperature The temperature change waveform that sensor measures measurement point is spent, relevant treatment is carried out to temperature measuring data through temperature acquisition analysis system After can effectively measure flow velocity, and then flow can be calculated.Selection of the utility model to source of the gas has stronger flexibility, operation Simply, have a wide range of application.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Reference:1- gas source supply devices, 2- high pressures release pipe, 3- release buffer heads, the temperature sensors of 4- first, 5- Second temperature sensor, 6- temperature acquisition analysis systems, 7- power switches, 8- power supplys, 9- pipelines.
The utility model is further described with reference to the accompanying drawings and detailed description.
Embodiment
Embodiment 1 of the present utility model:A kind of measurement apparatus of gas in pipelines flow velocity, including the first temperature sensor 4, Second temperature sensor 5, temperature acquisition analysis system 6 and source of the gas release system, the first temperature sensor 4 and second temperature sensing Device 5 is arranged on pipeline 9, and is connected with temperature acquisition analysis system 6, and temperature acquisition analysis system 6 is connected with power supply 8, Source of the gas release system is arranged on pipeline 9, and source of the gas release system includes gas source supply device 1, and high pressure release pipe 2 and release are buffered First 3, gas source supply device 1 discharges pipe 2 by high pressure and is connected with release buffer head 3, and gas source supply device 1 discharges into pipeline 9 Search gas temperature of the temperature higher or lower than fluid in pipeline 9.Set between temperature acquisition analysis system 6 and power supply 8 It is equipped with power switch 7.
Embodiment 2 of the present utility model:A kind of measurement apparatus of gas in pipelines flow velocity, including the first temperature sensor 4, Second temperature sensor 5, temperature acquisition analysis system 6 and source of the gas release system, the first temperature sensor 4 and second temperature sensing Device 5 is arranged on pipeline 9, and is connected with temperature acquisition analysis system 6, and temperature acquisition analysis system 6 is connected with power supply 8, Power switch 7 is provided between temperature acquisition analysis system 6 and power supply 8.Source of the gas release system is arranged on pipeline 9, and source of the gas is released Place system includes gas source supply device 1, high pressure release pipe 2 and release buffer head 3, and gas source supply device 1 discharges pipe 2 by high pressure It is connected with release buffer head 3, the temperature for the search gas that gas source supply device 1 discharges into pipeline 9 is higher or lower than pipeline 9 The temperature of interior fluid, one end of high pressure release pipe 2 is arranged in pipeline 9, and the other end is arranged on outside pipeline 9, and release buffer head 3 is set It is placed in pipeline 9.The setting height(from bottom) of first temperature sensor 4 is identical with the setting height(from bottom) of second temperature sensor 5.
Operation principle of the present utility model:First to needing measurement gas property to judge that selection uses high temperature source of the gas Or low temperature source of the gas and source of the gas type.
During work, power switch 7 is first turned on to the first temperature sensor 4, second temperature sensor 5, temperature acquisition point Analysis system 6 is powered, and it is normally run;Then system moment is discharged using the source of the gas for being arranged on the interior air-flow upstream of pipeline 9 A small amount of release high-temperature gas or cryogenic gas, 6 pair of first temperature sensor 4 of temperature acquisition analysis system, second temperature sensor 5 The gas temperature monitored is acquired;Relevant treatment is carried out to temperature fluctuation change by temperature acquisition analysis system 6, with reference to The distance between two sensors calculate flow velocity.

Claims (5)

1. a kind of measurement apparatus of gas in pipelines flow velocity, it is characterised in that including the first temperature sensor (4), second temperature Sensor (5), temperature acquisition analysis system (6) and source of the gas release system, first temperature sensor (4) and second temperature are passed Sensor (5) is arranged on pipeline (9), and is connected with temperature acquisition analysis system (6), the temperature acquisition analysis system (6) it is connected with power supply (8), the source of the gas release system is arranged on pipeline (9), the source of the gas release system is supplied including source of the gas Device (1), high pressure release pipe (2) and release buffer head (3), the gas source supply device (1) is by high pressure release pipe (2) with releasing Slow down drift (3) connection, the gas source supply device (1) temperature of the search gas of release into pipeline (9) is higher than or low In the temperature of pipeline (9) interior fluid.
2. a kind of measurement apparatus of gas in pipelines flow velocity according to claim 1, it is characterised in that the temperature acquisition Power switch (7) is provided between analysis system (6) and power supply (8).
3. a kind of measurement apparatus of gas in pipelines flow velocity according to claim 2, it is characterised in that first temperature The setting height(from bottom) of sensor (4) is identical with the setting height(from bottom) of second temperature sensor (5).
4. a kind of measurement apparatus of gas in pipelines flow velocity according to claim 3, it is characterised in that the high pressure release One end of pipe (2) is arranged in pipeline (9), and the other end is arranged on pipeline (9) outside.
5. a kind of measurement apparatus of gas in pipelines flow velocity according to claim 4, it is characterised in that the release buffering Head (3) is arranged in pipeline (9).
CN201720104743.2U 2017-01-23 2017-01-23 The measurement apparatus of gas in pipelines flow velocity Active CN206470284U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720104743.2U CN206470284U (en) 2017-01-23 2017-01-23 The measurement apparatus of gas in pipelines flow velocity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720104743.2U CN206470284U (en) 2017-01-23 2017-01-23 The measurement apparatus of gas in pipelines flow velocity

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CN206470284U true CN206470284U (en) 2017-09-05

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CN201720104743.2U Active CN206470284U (en) 2017-01-23 2017-01-23 The measurement apparatus of gas in pipelines flow velocity

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109550906A (en) * 2019-01-22 2019-04-02 东北大学 The measuring device and its measurement method of molten steel flow velocity in a kind of continuous cast mold

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109550906A (en) * 2019-01-22 2019-04-02 东北大学 The measuring device and its measurement method of molten steel flow velocity in a kind of continuous cast mold
CN109550906B (en) * 2019-01-22 2021-01-29 东北大学 Method for measuring molten steel flow velocity in continuous casting crystallizer

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