CN106969875A - A kind of dynamic total pressure probe for carrying real time calibration - Google Patents

A kind of dynamic total pressure probe for carrying real time calibration Download PDF

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Publication number
CN106969875A
CN106969875A CN201710200527.2A CN201710200527A CN106969875A CN 106969875 A CN106969875 A CN 106969875A CN 201710200527 A CN201710200527 A CN 201710200527A CN 106969875 A CN106969875 A CN 106969875A
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CN
China
Prior art keywords
pressure
probe
dynamic
steady state
real time
Prior art date
Application number
CN201710200527.2A
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Chinese (zh)
Other versions
CN106969875B (en
Inventor
马宏伟
钟亚飞
Original Assignee
北京航空航天大学
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Application filed by 北京航空航天大学 filed Critical 北京航空航天大学
Priority to CN201710200527.2A priority Critical patent/CN106969875B/en
Publication of CN106969875A publication Critical patent/CN106969875A/en
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Publication of CN106969875B publication Critical patent/CN106969875B/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L27/00Testing or calibrating of apparatus for measuring fluid pressure
    • G01L27/002Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
    • G01L27/005Apparatus for calibrating pressure sensors

Abstract

The invention belongs to pressure test technical field, a kind of dynamic total pressure probe for carrying real time calibration is disclosed.The probe includes end of probe, pole (1), steady state pressure hole (2) and dynamic pressure hole (3) are provided with the end of probe face of cylinder, steady state pressure hole (2) is connected by pressure guiding pipe (4) with probe external pressure sensor, dynamic pressure transducer is arranged in end of probe at the position in dynamic pressure hole (3), and holes is located at the same circumferential position in the face of cylinder.Compared with existing pressure probe, the present invention is by demarcation, the stable state stagnation pressure that can measure to flow simultaneously, dynamic stagnation pressure parameter, and because steady state pressure sensor distance flow field is affected by temperature smaller farther out, real time calibration can be carried out for dynamic pressure transducer.

Description

A kind of dynamic total pressure probe for carrying real time calibration

Technical field

The invention belongs to pressure test technical field, it is related to a kind of dynamic total pressure probe for carrying real time calibration, the present invention Real time calibration can be carried out to dynamic pressure transducer.

Background technology

Pressure test is the important component of flow field survey in scientific research and practical engineering application.Actual test scene Often bad environments, thus existed using the advanced optical testing technologies such as LDV, PIV and hot-wire anemometer measurement very big tired It is difficult.Advanced high-frequency pressure probe technique, built-in dynamic pressure sensor, with firmer than hot line, durable, compares optical measurement More simply, it is easier to be applied to the features such as engineering test and scientific research and be used widely.During dynamic pressure measurement In order to ensure the frequency response of pressure sensor, the tested flow field of the general distance of sensor is nearer, and the temperature change in flow field can pass pressure Sensor produces temperature drift, influences measurement accuracy.

Therefore, lack in current scientific research and practical engineering application and can carry out real time calibration to dynamic pressure transducer Pressure probe technology.

The content of the invention

The present invention solves the technical problem of:Can be to dynamic for lacking in current scientific research and practical engineering application State pressure sensor carries out the pressure probe technology of real time calibration, dynamic pressure transducer is carried out using combination probe real-time Calibration, improves the accuracy of measurement result.

The present invention technical solution be:

The present invention includes end of probe, pole (1), and end of probe includes steady state pressure hole (2), dynamic pressure hole (3), stable state Pressure sensor pressure guiding pipe (4) and dynamic pressure transducer lead (5) are drawn inside pole (1).

Further, probe pole (1) is cylindrical hollow structure, and pole (1) external diameter is selected in 4 to 10 millimeters, pole (1) Footpath is smaller than external diameter 1 millimeter.

Further, steady state pressure hole (2) and dynamic pressure hole (3) are in the same size, 0.1 to 5 millimeters of aperture, and holes, which is located at, to be visited The same circumferential position in the needle section face of cylinder, holes circle center distance is more than 1.2 times of apertures, and steady state pressure hole (2) can be in dynamic pressure The either above or below in hole (3).

Further, steady state pressure sensor is connected by pressure guiding pipe with steady state pressure hole (2), and dynamic pressure transducer is installed Close to the position in dynamic pressure hole (3) in probe portion.

The beneficial effects of the invention are as follows:Influence not only to being tested flow field is smaller, it is ensured that the reliability of installation, using steady The measurement result of state pressure carries out real time calibration to dynamic pressure measurement to dynamic pressure transducer, improves measurement result Accuracy.

Brief description of the drawings

Fig. 1 is a kind of while measuring the combination probe schematic diagram of fluid stable state stagnation pressure and dynamic stagnation pressure:1- probe poles, 2- Steady state pressure hole, 3- dynamic pressures hole, 4- pressure guiding pipes, 5- dynamic pressure transducer leads.

Embodiment

The present invention will be described in detail with specific embodiment below in conjunction with the accompanying drawings.

As shown in figure 1, the present invention includes end of probe, pole (1), end of probe includes steady state pressure hole (2), dynamic pressure Hole (3), steady state pressure sensor pressure guiding pipe (4) and dynamic pressure transducer lead (5) are drawn inside pole (1).

Probe pole (1) is cylindrical hollow structure, and pole (1) external diameter selects 4 millimeters, and pole (1) internal diameter is smaller than external diameter by 1 Millimeter.

Steady state pressure hole (2) and dynamic pressure hole (3) are in the same size, 0.4 millimeter of aperture, and holes is located at end of probe cylinder The same circumferential position in face.

Steady state pressure sensor is connected by pressure guiding pipe with steady state pressure hole (2), and dynamic pressure transducer is arranged on probe Close to the position in dynamic pressure hole (3) in portion.

A kind of dynamic total pressure probe for carrying real time calibration introduced in the embodiment of the present invention, is demarcated by calibration, can be with Obtain nominal data.When practical flow field is measured, pressure sensor voltage signal can be obtained by the lead of pressure sensor, profit With the nominal data of acquisition, data processing is carried out, the dynamic stagnation pressure and stable state stagnation pressure information in flow field can be obtained, by further Processing, moreover it is possible to using steady state pressure measurement result to dynamic pressure carry out real time calibration, improve measurement result accuracy.

Claims (4)

1. a kind of dynamic total pressure probe for carrying real time calibration, it is characterised in that:Include end of probe, pole (1), end of probe Include steady state pressure hole (2), dynamic pressure hole (3), steady state pressure sensor pressure guiding pipe (4) and dynamic pressure transducer lead (5) Drawn inside pole (1).
2. according to claim 1, a kind of dynamic total pressure probe for carrying real time calibration, it is characterised in that:Probe pole (1) is circle Columnar hollow structure, pole (1) external diameter selects 4 to 10 millimeters, and pole (1) internal diameter is smaller than external diameter 1 millimeter.
3. according to claim 1, a kind of dynamic total pressure probe for carrying real time calibration, it is characterised in that:Steady state pressure hole (2) and Dynamic pressure hole (3) is in the same size, 0.1 to 5 millimeters of aperture, and holes is located at the same circumferential position in the end of probe face of cylinder, holes Circle center distance is more than 1.2 times of apertures, steady state pressure hole (2) can dynamic pressure hole (3) either above or below.
4. according to claim 1, a kind of dynamic total pressure probe for carrying real time calibration, it is characterised in that:Steady state pressure sensor It is connected by pressure guiding pipe with steady state pressure hole (2), dynamic pressure transducer is arranged in probe portion close to dynamic pressure hole (3) Position.
CN201710200527.2A 2017-03-29 2017-03-29 Dynamic total pressure probe with real-time calibration function CN106969875B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710200527.2A CN106969875B (en) 2017-03-29 2017-03-29 Dynamic total pressure probe with real-time calibration function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710200527.2A CN106969875B (en) 2017-03-29 2017-03-29 Dynamic total pressure probe with real-time calibration function

Publications (2)

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CN106969875A true CN106969875A (en) 2017-07-21
CN106969875B CN106969875B (en) 2020-02-21

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CN201710200527.2A CN106969875B (en) 2017-03-29 2017-03-29 Dynamic total pressure probe with real-time calibration function

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110060141A (en) * 2009-11-30 2011-06-08 한국전력공사 Device of measuring the temperature and pressure probe
CN102141447A (en) * 2010-12-31 2011-08-03 中国航天科技集团公司第六研究院第十一研究所 Total temperature/total pressure and static probe
US20140090457A1 (en) * 2012-10-01 2014-04-03 General Electric Company Metalized ceramic leading edge nozzle kiels for high-temperature turbine applications
CN104048808A (en) * 2013-03-14 2014-09-17 中国科学院工程热物理研究所 Dynamic entropy probe
CN104101457A (en) * 2013-04-02 2014-10-15 中国科学院工程热物理研究所 Dynamic total pressure probe
CN105716788A (en) * 2015-11-02 2016-06-29 北京航空航天大学 Three-hole transonic speed pressure probe
CN106404409A (en) * 2016-11-16 2017-02-15 中国科学院工程热物理研究所 Probe assembly suitable for strong-shearing unsteady flow test of aeroengine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110060141A (en) * 2009-11-30 2011-06-08 한국전력공사 Device of measuring the temperature and pressure probe
CN102141447A (en) * 2010-12-31 2011-08-03 中国航天科技集团公司第六研究院第十一研究所 Total temperature/total pressure and static probe
US20140090457A1 (en) * 2012-10-01 2014-04-03 General Electric Company Metalized ceramic leading edge nozzle kiels for high-temperature turbine applications
CN104048808A (en) * 2013-03-14 2014-09-17 中国科学院工程热物理研究所 Dynamic entropy probe
CN104101457A (en) * 2013-04-02 2014-10-15 中国科学院工程热物理研究所 Dynamic total pressure probe
CN105716788A (en) * 2015-11-02 2016-06-29 北京航空航天大学 Three-hole transonic speed pressure probe
CN106404409A (en) * 2016-11-16 2017-02-15 中国科学院工程热物理研究所 Probe assembly suitable for strong-shearing unsteady flow test of aeroengine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨林 等: "基于半无限引压管效应的动态压力测量方法", 《航空动力学报》 *

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