New! View global litigation for patent families

CN102426091B - Protective device of dynamic pressure sensor used in wind tunnel air inlet experiment - Google Patents

Protective device of dynamic pressure sensor used in wind tunnel air inlet experiment Download PDF

Info

Publication number
CN102426091B
CN102426091B CN 201110310432 CN201110310432A CN102426091B CN 102426091 B CN102426091 B CN 102426091B CN 201110310432 CN201110310432 CN 201110310432 CN 201110310432 A CN201110310432 A CN 201110310432A CN 102426091 B CN102426091 B CN 102426091B
Authority
CN
Grant status
Grant
Patent type
Prior art keywords
tunnel
device
experiment
dynamic
pressure
Prior art date
Application number
CN 201110310432
Other languages
Chinese (zh)
Other versions
CN102426091A (en )
Inventor
金承信
高正红
高永卫
惠增宏
焦予秦
Original Assignee
西北工业大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Abstract

本发明公开了一种风洞进气道实验动态压力传感器保护装置,压力监测传感器监测进气道内动态压力气流变化率,放大后的压力气流变化率信号超过设置的参数后关断进气道电源,N个动态压力传感器采集进气道的动态压力数据,经放大后由VXI数据采集系统送入工业控制机得到进气道实验所需要的畸变指数,振动监测传感器测量进气道内动态气流振动变化,放大后的动态气流振动信号超过设置的参数后关断进气道电源。 The present invention discloses a wind tunnel experiment inlet protection dynamic pressure sensor means, dynamic pressure changes in the flow rate sensor monitors the inlet pressure monitoring, the rate of change of the parameters gas flow pressure of the amplified signal exceeds the power is turned off port , N dynamic pressure dynamic pressure sensor to collect the data port, the amplified into the VXI data acquisition system to obtain industrial control experiments inlet distortion index required, the vibration sensor measures the vibration monitoring dynamic changes in the inlet gas stream after the dynamic parameters of the air stream vibrating the amplified signal exceeds the power off port. 本发明起到保护动态压力传感器的作用从而减少经济损失,可折叠安装,方便使用的。 The present invention has protective effect of the dynamic pressure sensor so as to reduce economic losses, foldable installation, easy to use.

Description

—种风洞进气道实验动态压力传感器保护装置 - kind of wind tunnel experiments dynamic pressure sensor port protector

技术领域 FIELD

[0001] 本发明涉及测量控制技术领域,尤其是一种压力传感器的保护装置。 [0001] The present invention relates to measurement and control technology, and in particular a protective device for a pressure sensor.

背景技术 Background technique

[0002] 风洞进气道实验用动态压力传感器完成对畸变指数的测量。 [0002] completion of the measurement of the wind tunnel experiment inlet distortion index dynamic pressure sensor. 由于制造动态压力传感器的技术非常困难且成本高,所以动态压力传感器价格非常昂贵。 Since the technology for producing dynamic pressure sensor is very difficult and costly, so the dynamic pressure sensor is very expensive. 如“动态压力畸变高速数据采集及实时存储处理系统”是进气道/发动机相容性评价的基木关键试验分析装置,被国外认为是一种技术复杂、造价昂贵的系统,美国FAT公司曾报价300万美元,其中动态压力传感器所占比例很大。 The "dynamic pressure distortion high speed data acquisition and real-time storage processing system" is a wooden key base analyzer Compatibility Test Evaluation intake / engine, it is considered a foreign technically complex and expensive systems, FAT U.S. companies have Quote 3 million US dollars, of which a large proportion of the dynamic pressure sensor. 根据动态压力传感器的测量精度、量程、频率响应、质量等指标的不同其单价从数千到数万元不等。 The dynamic pressure sensor measurement accuracy, range, frequency response, which is different quality indicators of unit price from thousands to tens of thousands. 对进气道畸变指数的测量每次实验需用10个以上的动态压力传感器,测量得到的动态压力数据的质量会直接影响实验结果,所以动态压力传感器至关重要。 Measurement of the inlet distortion index than each experiment required 10 dynamic pressure sensor, the quality of the dynamic pressure data measured will directly affect the results, so the dynamic pressure sensor is critical. 一般进气道实验时需要根据要求选择动态压力传感器的量程和精度。 Inlet generally necessary to select the dynamic range and accuracy of the pressure sensor in accordance with the requirements of the experiment. 量程选择太大测量精度达不到要求数据不准确,选用量程适中可以有效的获得测量动态数据但非常容易损坏动态压力传感器,损坏后更换又非常麻烦。 Range selection too inaccurate measurement accuracy meet the requirements, the choice of a moderate range can effectively obtain measurements of dynamic data, but the dynamic pressure sensor is easily damaged, and if damaged replacement is very troublesome. 究其容易损坏的原因是因为风洞进行进气道实验时,进气道内不但有动态压力而且还存在动态振动和动态冲击,气流非常复杂,流场极不稳定,导致了动态压力传感器的损坏,其中振动和冲击引起的因素比较大。 Investigate the reason is easily damaged because the wind tunnel experiment inlet, the inlet not only the presence but also the dynamic pressure and the dynamic vibration dynamic impact, the gas flow is very complex, very unstable flow field, resulting in damage to the dynamic pressure sensor which factors caused by vibration and shock is relatively large. 现在技术没有很好的办法来有效的保护动态压力传感器。 Now technology is no good way to effectively protect the dynamic pressure sensor. 就是凭对进气道的实验经验和实验数据对传感器量程和精度等参数进行选择以避免动态压力传感器的损坏。 It is based on the experimental experience and experimental data of the sensor inlet range and accuracy parameters are selected to avoid damage to the dynamic pressure sensor. 由于动态压力传感器的价格非常昂贵又对测量质量和实验数据起着决定性的作用。 Since the price of the dynamic pressure sensor is very expensive and plays a decisive role in the quality measurement and experimental data. 这样对动态压力传感器的保护就显的非常重要。 This is very important for the protection of significant dynamic pressure sensor. 为此《振动与冲击》2007年4月刊登了“压杆应变式压力传感器在爆炸冲击波载荷测试中的应用”一文涉及使用压杆应变式压力传感器解决了普通传感器在高频压力脉冲下频响低且容易损坏等问题。 For this purpose "of Vibration and Shock," published in April 2007, "Application of lever gauge pressure sensor shock loading test" herein relates to the use of a strain gauge pressure sensor lever solve common sensor frequency response at high frequency pressure pulses low and easy to damage and other problems. 这种方法基本原理不能用于风洞进气道实验,另外,由于保护器体积大无法安装在进气道中。 The basic principle of this method can not be used for wind tunnel experiments inlet, addition, due to the large volume of the protector in the intake passage can not be installed. 《油气储运》1999年01期刊登“梭式管道爆破保护装置的动态特性”,梭式管道爆破保护装置用于当管道泄漏达到设定的保护值时,可迅速截断输送制止泄漏只是对动态特性进行了试验研究。 "Oil and Gas Storage and Transportation" published in 1999, 01 "pipeline shuttle blasting dynamic characteristics of the protection device," shuttle blasting pipeline leakage protection device to protect the pipeline for when the set value can be quickly cut off to stop the leak only on the dynamic delivery experimental study characteristics were. 以上两种方法不能应用在风洞进气道实验中而有效的保护动态压力传感器且防止损坏。 The above two methods can not be applied in a wind tunnel experiment inlet and effective protection of the dynamic pressure sensor and prevent damage.

发明内容 SUMMARY

[0003] 为了克服现有技术在风洞进气道实验中无法保护动态压力传感器且防止损坏的不足,本发明提供一种风洞进气道实验动态压力传感器保护装置,根据动态传感器说明书设置压力监测参数设置器的参数和实验经验设置振动监测参数设置器的参数,当进气道内的压力值或振动值超过压力监测参数设置器或振动监测参数设置器设置的参数值后驱动限位器迅速切断进气道电源,从而有效的保护动态压力传感器。 [0003] In order to overcome the prior art in a wind tunnel experiment inlet dynamic pressure sensor and can not be protected to prevent damage to the shortage, the present invention provides a wind tunnel experiment inlet dynamic pressure sensor protection device is provided according to a dynamic pressure sensor specification setting the parameters monitored parameters and experimental experience a vibration monitor the parameters of the parameter set, the parameter when the pressure value or vibration value exceeds the pressure in the intake monitored parameter set or parameter set vibration monitor driver quickly stop cut off the power inlet, thereby effectively protect the dynamic pressure sensor.

[0004] 本发明的主要思路是:动态压力传感器、PVDF压力传感器和PVDF振动传感器都可以用来测量进气道内动态压力和振动的变化。 [0004] The main idea of ​​the present invention is: a dynamic pressure sensor, PVDF PVDF pressure sensor and the vibration sensor can be used to measure dynamic pressure changes in the inlet and vibration. 表I是动态压力传感器、PVDF压力传感器、PVDF振动传感器的各种性能对比,由此得到结论;1、由于PVDF材料传感器对突变信号反应快,可以提前反映进气道内气流的变化率。 Table I is a dynamic pressure sensor, a pressure sensor of various performance comparison PVDF, PVDF vibration sensor, thereby obtaining the conclusion; 1, since the PVDF material sensor mutation fast signal response reflects the changes in the intake air flow rate of advance. 2、PVDF材料传感器具有灵敏度高、非常轻薄、耐冲击、频响范围宽、成本低、不易损坏的特点。 2, PVDF material sensor has high sensitivity, very thin, impact resistance, wide frequency range, low cost, easy to damage characteristics. 3、因为测量动态量程和频率范围大,PVDF不用更换压力监测传感器和振动传感器的量程。 3, since the measurement dynamic range and a large frequency range, PVDF range without changing the pressure monitoring sensor and a vibration sensor. 4、动态压力传感器测量精准度高,可以用来测量数据,而PVDF压力传感器、PVDF振动传感器测量精准度低,可用来保护压力传感器,根据动态传感器的说明书设置压力监测参数设置器的参数内容(动态压力最大值、动态压力最大值延迟时间、频率响应)作为参数值放入压力监测参数设置器中。 4, the dynamic pressure sensor of high accuracy, the measurement data can be used, and a pressure sensor PVDF, PVDF low vibration sensor measurement accuracy, can be used to protect the pressure sensor, according to the parameters set pressure monitor contents of the specification of the parameter setter of the dynamic sensor ( maximum dynamic pressure, dynamic pressure maximum delay time, frequency response) as the value of the parameter monitored parameters placed in a pressure vessel is provided. 根据实验经验设置振动监测参数设置器的参数得到参数内容(最大振动频率、最大振动频率延迟时间、振动位移)作为参数值放入振动监测参数设置器中。 A vibration monitor parameter setter empirical parameters experimentally obtained parameter content (maximum vibration frequency, the maximum delay time of the vibration frequency, vibration displacement) into the vibration monitor as the parameter value of the parameter setter. 当进气道内的压力超过压力监测参数设置器的参数或动态振动参数超过振动监测参数设置器的参数后,压力限位器或振动限位器迅速切断进气道 When the pressure in the inlet exceeds the parameter or parameters of the dynamic vibration monitor pressure exceeds the parameter setter after vibration parameters monitored parameter setter, pressure or vibration stopper stop quickly cut off a port

[0005] 表I [0005] TABLE I

[0006] [0006]

Figure CN102426091BD00041

[0007] 的电源,对动态压力传感器起到保护作用。 [0007] The power supply, protect the dynamic pressure sensor.

[0008] 本发明解决技术问题所采用的技术方案是:包括压力监测传感器、电荷放大器、压力监测参数设置器、压力限位器、N个动态压力传感器、N个程控放大器、VXI数据采集系统、工业控制机、进气道电源、振动监测传感器、隔离放大器、振动监测参数设置器和振动限位器,1〈=N〈=300。 [0008] The aspect of the present invention solves the technical problem is that: a pressure monitoring sensor comprises a charge amplifier, parameter setting pressure monitor, a pressure limiter, N dynamic pressure sensors, N a programmable amplifier, VXI data acquisition system, industrial control, power inlet, vibration monitoring sensor, isolation amplifiers, vibration monitor parameters and vibration stopper, 1 <= N <= 300. 压力监测传感器监测进气道内动态压力气流变化率,输出压力气流变化率信号至电荷放大器进行放大,当放大后的压力气流变化率信号超过压力监测参数设置器设置的参数后由压力限位器关断进气道电源,N个动态压力传感器采集进气道的动态压力数据,分别经过N个程控放大器进行放大后传输至VXI数据采集系统,VXI数据采集系统采集动态压力数据再送入工业控制机通过计算畸变指数方法得到进气道实验所需要的畸变指数,振动监测传感器测量进气道内动态气流振动变化,输出动态气流振动信号至隔离放大器进行放大,当放大后的动态气流振动信号超过振动监测参数设置器设置的参数后由振动限位器关断进气道电源,工业控制机依据动态压力传感器说明书中的动态压力传感器量程设置压力监测参数设置器的参数,依据实验的实际需求设置振动监测参 Dynamic pressure changes in the flow rate in the inlet pressure monitoring sensor monitoring the output pressure changes in the flow rate signal to the charge amplifier amplifies, when rate of change of the parameters gas flow pressure signal amplified monitored parameter exceeds the pressure setting is set off after the pressure limiter power off the inlet, the dynamic pressure sensor of the N data acquisition dynamic pressure of the intake passage, respectively, through the N programmable amplifier to the VXI amplified transmit data acquisition system, data acquisition system VXI dynamic pressure data by the industrial control and then into the method of calculating the distortion indices obtained distortion index required intake experiments, dynamic vibration monitoring sensor measures vibration in the intake air flow changes, the air stream vibrating signal to the output dynamic isolation amplifier amplifies, when the dynamic vibration signal stream exceeds amplified vibration monitoring parameters after the parameter setting is provided by the vibration stopper off the power inlet, industrial control parameter setting parameter setter pressure monitor according to the dynamic range of the dynamic pressure sensor is a pressure sensor specification, vibration monitoring parameters set based on the actual needs of the experiment 设置器的参数。 Parameter setter.

[0009] 所述的压力监测传感器采用PVDF材料压力传感器。 Pressure monitoring sensors [0009] The pressure sensor made of PVDF material.

[0010] 所述的振动监测传感器采用PVDF材料振动传感器。 [0010] The vibration sensors monitor the vibration sensor made of PVDF material.

[0011] 所述的压力监测传感器、动态压力传感器和振动监测传感器安装在进气道同一横截面上,并按圆周方向均匀分布,上述三种传感器屏蔽后连接大地。 [0011] said pressure monitoring sensor, the dynamic pressure sensor and a vibration sensor mounted on the same monitor the inlet cross-section, press evenly distributed in the circumferential direction, after the three sensor connected to the ground shield.

[0012] 所述的压力监测参数设置器的参数内容按动态压力传感器说明书遵循以下要求: [0012] The content of the parameter monitored parameter setter pressure dynamic pressure sensor according to the specification of the following requirements:

[0013] 1、动态压力最大值<=动态压力传感器压力量程*1.414。 [0013] 1, the maximum value of dynamic pressure <= dynamic pressure sensor range * 1.414.

[0014] 2、动态压力最大值延迟时间〈=0.IS〜0.5S。 [0014] 2, the maximum delay time of dynamic pressure <= 0.IS~0.5S.

[0015] 3、频率响应〈=1/2〜1/10*动态压力传感器固有频率。 [0015] 3, the frequency response of <= 1 / 2~1 / 10 * the natural frequency of the dynamic pressure sensor.

[0016] 将三个参数值放入压力监测参数设置器中,当在进气道内的参数超过设定值以后关断进气道电源。 [0016] The three parameters monitored parameters placed in a pressure vessel is provided, in the inlet When the parameter exceeds the set value of the power supply is turned off port.

[0017] 所述的振动监测参数设置器的参数内容遵循实验经验按以下要求: [0017] The content of the parameter monitored parameter setter vibration follows experimental experience in the following claims:

[0018] 1、最大振动频率取0.5 Hz〜7Hz。 [0018] 1, the maximum oscillation frequency equals 0.5 Hz~7Hz.

[0019] 2、最大振动频率延迟时间〈=0.3S〜1S。 [0019] 2, the maximum delay time of the vibration frequency <= 0.3S~1S.

[0020] 3、振动位移〈=400 um 〜IOOOum。 [0020] 3, the vibration displacement <= 400 um ~IOOOum.

[0021] 将三个参数值放入振动监测参数设置器中,当在进气道内的参数超过设定值以后关断进气道电源。 [0021] The parameter values ​​into three vibration monitor parameter setter, When the parameter in the inlet exceeds the set value off the power port.

[0022] 本发明的有益效果是:本发明能够提供保护动态压力传感器的装置,当进气道内的压力值或振动值超过压力监测参数设置器或振动监测参数设置器设置的参数值后驱动限位器迅速切断进气道电源,起到保护动态压力传感器的作用从而减少经济损失。 [0022] Advantageous effects of the present invention are: the present invention can provide a protection apparatus of a dynamic pressure sensor, a pressure value when the parameter value or vibration value exceeds the pressure in the intake monitored parameter set or parameter set vibration monitor driving limit bit is quickly cut off the power supply port, serve to protect the dynamic pressure sensor, thereby reducing the economic loss. 利用PVDF材料成本低,可折叠安装、方便使用的特点也可广泛应用各种压力实验或振动实验。 Low cost by using PVDF material, foldable installation, easy to use features can be widely applied test pressures or vibration test.

[0023] 下面结合附图和实施例对本发明进一步说明。 Figures and examples further illustrate the present invention [0023] The following binding.

附图说明 BRIEF DESCRIPTION

[0024] 图1是本发明的装置示意图。 [0024] FIG. 1 is a schematic view of apparatus according to the present invention.

具体实施方式 detailed description

[0025] 图1是本发明的装置示意图,压力监测传感器监测进气道内动态压力气流变化率至型号是M193802的电荷放大器将动态气流压力变化率进行放大,当放大后的信号超过型号是YPK-38的压力监测参数设置器的参数后由型号是LSM 020.2的压力限位器关断进气道电源。 [0025] FIG. 1 is a schematic view of apparatus according to the present invention, the pressure monitoring sensor monitors changes in the flow rate of the dynamic pressure inlet to the Model M193802 charge amplifier is dynamically amplified airflow rate of pressure change, when the amplified signal exceeds the model is YPK- after the pressure parameter monitoring parameter setter 38 is a model LSM 020.2 stopper off pressure supply port. 选取N=15,采用15只型号是XCS-9301-ro的动态压力传感器1、……、动态压力传感器15采集进气道的动态数据分别经过通过型号是TS-2000板的多路程控放大器1、……、程控放大器15将动态数据进行放大后至型号是VXI16015S的VXI数据采集系统并行采集动态数据。 Select N = 15, 15 using the pressure sensor is a dynamic model XCS-9301-ro 1, ......, dynamic data collection dynamic intake pressure sensor 15, respectively, through the multi-channel model is programmable by the amplifier board 1 TS-2000 after, ......, program-controlled amplifier 15 amplifies the data to the dynamic model is VXI16015S VXI data acquisition system of parallel acquisition of dynamic data. VXI数据采集系统将动态数据送入型号是IPC610的工业控制机计算出进气道实验结果所需要的畸变指数。 VXI data acquisition system data into the dynamic model is IPC610 industrial control unit calculates the required intake results distortion index. 振动监测传感器测量进气道内动态气流振动信号通过型号是AD204的隔离放大器将振动信号进行放大,当放大后的信号超过型号是JYHK-HZD-B-5的振动监测参数设置器设置的参数后由型号是G37的振动限位器关断进气道电源。 Vibration monitoring sensors measuring the vibration signal dynamic airflow through the intake model is AD204 vibration isolation amplifier amplifies the signal, when the amplified signal exceeds a model parameter JYHK-HZD-B-5 vibration monitoring parameters set by the post G37 model is a vibration stopper off the power inlet. 用工业控制机工业控制机依据动态压力传感器说明书中的动态压力传感器量程设置压力监测参数设置器的参数,工业控制机依据实验经验设置振动监测参数设置器的参数。 Pressure monitor is provided with a parameter setter of the industrial control industrial control according to the dynamic range of the dynamic pressure sensor is a pressure sensor specification parameters, industrial control parameter monitoring a vibration parameter setter according to the experimental experience.

[0026] 选用压力监测传感器的材料是PVDF材料压力传感器,其尺寸是Φ50πιπι、厚350 μ m0 Materials [0026] Selection pressure monitoring sensor of the PVDF material is a pressure sensor, which are dimensioned Φ50πιπι, a thickness of 350 μ m0

[0027] 选用振动监测传感器的材料是PVDF材料振动传感器,尺寸是:长18_、宽18_、厚170 μ m0 [0027] The choice of material is a vibration sensor monitoring the vibration sensor PVDF material, it is dimensions: length 18_, 18_ width, a thickness of 170 μ m0

[0028] 选用一个压力监测传感器、15个动态压力传感器、一个振动监测传感器安装在Φ350mm的横截面上按圆周方向均勻分布,再将传感器屏蔽后连接大地。 [0028] The selection of a pressure monitoring sensor, the dynamic pressure sensor 15, vibration monitoring sensor mounted on a cross-section of Φ350mm circumferentially uniformly distributed, then the sensor is connected to the ground shield.

[0029] 动态压力传感器量程设置压力监测参数设置器的参数内容: [0029] The dynamic pressure sensor monitoring a pressure range of the parameters of the parameter set contents:

[0030] 当动态压力传感器的量程=5PSI时; [0030] When the dynamic range of the pressure sensor when = 5PSI;

[0031] 1、动态压力最大值=7PSI。 [0031] 1, the maximum value of the dynamic pressure = 7PSI.

[0032] 2、动态压力最大值延迟时间=0.1S。 [0032] 2, the maximum delay in the dynamic pressure = 0.1S.

[0033] 3、频率响应=100KHZ。 [0033] 3, the frequency response = 100KHZ.

[0034] 将三个参数值放入压力监测参数设置器中,当在进气道内的参数超过设定值以后关断进气道电源。 [0034] The three parameters monitored parameters placed in a pressure vessel is provided, in the inlet When the parameter exceeds the set value of the power supply is turned off port.

[0035] 设置振动监测参数设置器的参数内容: [0035] SUMMARY vibration monitor parameter setting parameter setter:

[0036] 1、最大振动频率取0.5HZ。 [0036] 1, the maximum oscillation frequency equals 0.5HZ.

[0037] 2、最大振动频率延迟时间=0.3S。 [0037] 2, the maximum delay time of the vibration frequency = 0.3S.

[0038] 3、振动位移=400um。 [0038] 3, the vibration displacement = 400um.

[0039] 将三个参数值放入振动监测参数设置器中,当在进气道内的参数超过设定值以后关断进气道电源。 [0039] The parameter values ​​into three vibration monitor parameter setter, When the parameter in the inlet exceeds the set value off the power port.

[0040] 说明:当动态压力传感器的量程>=100PSI时可以取设置参数中的上限值。 [0040] Note: When the dynamic pressure sensor range> = 100PSI be taken when setting the upper limit value of the parameters. 当100PSI〉量程>=10PSI可以取设置参数中的中间值,当10PSI〉量程可以取设置参数中的下限值(设置参数包括压力监测参数设置器的三个参数值和振动监测参数设置器的三个参数值)。 When 100PSI> range> = 10PSI may take an intermediate value of parameter, when 10PSI> span parameter set can take the lower limit value (setting parameter comprises a parameter setter pressure monitor three parameters and vibration monitoring parameters setter three parameters).

[0041] 上述的参数N设置为1、90、300等个数时,仅对分布的密度等进行改变即可,均能够实现同样的功能,个数越多,测量的越精确。 When [0041] The parameter N is set to 1,90,300 like number, only the density distribution can be changed, we are able to achieve the same function, the greater the number, the more accurate the measurement.

[0042] 本发明与现有技术相比具有以下显著的优点: [0042] The present invention and the prior art has the following significant advantages:

[0043] I)由于压力监测传感器对动态压力气流变化率反应快,当进气道内出现超动态动态压力最大值、动态压力最大值延迟时间、频率响应和最大振动频率、最大振动频率延迟时间、振动位移时及时切断电源对动态压力传感器进行有效保护。 [0043] I) the pressure monitoring sensor for quick change of dynamic pressure of the reaction gas stream, the dynamic-dynamic pressure maximum occurs, the maximum delay time of the dynamic pressure, vibration frequency and the maximum frequency response, the maximum time delay when the vibration frequency port, disconnects power to the vibration displacement of the dynamic pressure sensor for effective protection.

[0044] 2)由于PVDF测量动态压力量程和振动频率范围大、价格相当便宜而且不会损坏,所以不用更换压力监测传感器和振动传感器。 [0044] 2) Because of the dynamic pressure measurement PVDF vibration frequency range and a wide range, and will not damage a cheaper price, so we do not replace the pressure monitoring sensor and a vibration sensor.

[0045] 3)在实验中可以尽量选用接近最大数据量程的动态压力传感器进行畸变指数的高精度测量,使测量数据更接近实际情况。 [0045] 3) In the experiment may try to use a pressure sensor proximate to a dynamic range maximum data distortion index of high precision measurement, the measurement data is more realistic.

[0046] 4 ) PVDF材料成本低,可折叠安装使用。 [0046] 4) PVDF material having a low cost, foldable installation.

[0047] 工作程序是:1、安装:将压力监测传感器、动态压力传感器1、……动态压力传感器N、振动监测传感器安装在横截面上按圆周方向均匀分布,再将传感器屏蔽后连接大地。 [0047] The procedures are: 1, the installation: a pressure monitoring sensor, a dynamic pressure sensor, the dynamic pressure sensor ...... N, vibration monitoring sensor is mounted in a cross section circumferentially uniformly distributed, then the sensor is connected to the ground shield.

2、用工业控制机分别设置压力监测参数设置器的参数和设置振动监测参数设置器的参数,根据动态传感器的说明书设置压力监测参数设置器的参数(动态压力最大值、动态压力最大值延迟时间、频率响应),根据实验经验设置振动监测参数设置器的参数(最大振动频率、最大振动频率延迟时间、振动位移)。 2, a pressure monitoring parameters and settings set the parameters vibration monitor the parameters of the parameter set controlling an industrial machine, respectively, according to the parameter specification setting parameter setter pressure monitor dynamic sensor (maximum value of dynamic pressure, dynamic pressure maximum delay time , frequency response), a vibration monitor parameter setting parameters based on the experimental experience setter (maximum vibration frequency, the maximum delay time of the vibration frequency, vibration displacement). 3、实验:将进气道的动态压力气流增加,压力监测传感器监测进气道内动态压力气流变化率至电荷放大器将动态气流压力变化率进行放大,当放大后的压力变化率信号超过压力监测参数设置器设置的参数后由压力限位器自动关断进气道电源。 3, the experiment: the inlet gas stream dynamic pressure is increased, the rate of change of dynamic pressure gas flow monitoring sensor monitors the inlet pressure to the charge amplifier dynamic airflow rate of pressure change is amplified, when the pressure change rate signal amplified monitored parameter exceeds the pressure after the parameter setting is set automatically turn off the power supply by the intake pressure limiter. 振动监测传感器测量进气道内动态气流振动信号变化通过隔离放大器将振动信号进行放大,当放大后的动态气流振动信号超过振动监测参数设置器设置的参数后由振动限位器关断进气道电源。 The air stream vibrating the dynamic vibration monitoring sensor signal variation measured intake vibration signal is amplified by an isolation amplifier, when the dynamic vibration signal amplified airflow parameter exceeds the parameter setter vibration monitor set off by the vibration after the stop off power inlet . 4、工作过程:启动进气道电源,动态压力传感器测量得到风洞进气道内动态压力信号通过程控放大器、VXI数据采集系统得到有效的动态测量数据。 4, the working process: start power inlet, the dynamic pressure sensor measures the dynamic pressure signal obtained by wind tunnel inlet programmable amplifier, VXI data acquisition system has been effective dynamic measurements. 压力监测传感器监测进气道内的动态压力得到的动态压力信号经通过电荷放大器将信号放大,当放大后的信号超过压力监测参数设置器设置的参数后由压力限位器自动关断进气道电源。 Dynamic pressure signal within the dynamic pressure sensor monitors the inlet pressure monitoring obtained by the charge amplifier by amplifying the signal, when the amplified signal exceeds the parameter monitored parameter setting pressure set off automatically by a pressure supply port stopper . 振动监测传感器测量进气道内动态气流振动信号变化通过隔离放大器将振动信号进行放大,当放大后的信号超过振动监测参数设置器设置的参数后由振动限位器关断进气道电源。 Vibration monitoring sensors measuring the vibration signal within the dynamic intake airflow change signal is amplified by the vibration isolation amplifier, the amplified signal when the parameter exceeds the parameter setter vibration monitor set off by the vibration after the stop off power inlet. 对动态压力传感器起到保护作用。 Protect the dynamic pressure sensor.

Claims (4)

1.一种风洞进气道实验动态压力传感器保护装置,包括压力监测传感器、电荷放大器、压力监测参数设置器、压力限位器、N个动态压力传感器、N个程控放大器、VXI数据采集系统、工业控制机、进气道电源、振动监测传感器、隔离放大器、振动监测参数设置器和振动限位器,其特征在于:1〈=N〈=300 ;压力监测传感器监测进气道内动态压力气流变化率,输出压力气流变化率信号至电荷放大器进行放大,当放大后的压力气流变化率信号超过压力监测参数设置器设置的参数后由压力限位器关断进气道电源,N个动态压力传感器采集进气道的动态压力数据,分别经过N个程控放大器进行放大后传输至VXI数据采集系统,VXI数据采集系统采集动态压力数据再送入工业控制机通过计算畸变指数方法得到进气道实验所需要的畸变指数,振动监测传感器测量进气道内动态气 A wind tunnel experiment inlet dynamic pressure sensor protection means includes a pressure monitoring sensor, the charge amplifier, the parameter setter pressure monitor, a pressure limiter, N dynamic pressure sensors, N a programmable amplifier, VXI data acquisition system , industrial control, power inlet, vibration monitoring sensor, isolation amplifiers, vibration monitor parameters and vibration limit, characterized in that: 1 <= N <= 300; pressure monitoring sensor monitors the inlet gas stream dynamic pressure rate of change of output pressure changes in the flow rate signal to the charge amplifier amplifies the parameter when the pressure changes in the flow rate of the amplified signal exceeds the pressure monitor parameters set by the pressure limiter off power inlet, N dynamic pressure dynamic pressure sensors collect data port respectively through the N programmable amplifier amplifies the VXI transmitted to a data acquisition system, data acquisition system VXI dynamic pressure and then into industrial control data obtained by calculating the distortion for the inlet experiment index method required distortion index, vibration monitoring sensor measures the inlet gas dynamic 流振动变化,输出动态气流振动信号至隔离放大器进行放大,当放大后的动态气流振动信号超过振动监测参数设置器设置的参数后由振动限位器关断进气道电源,工业控制机设置压力监测参数设置器和振动监测参数设置器的参数。 Vibration change stream, the air stream vibrating signal to the output dynamic isolation amplifier amplifies the airflow when the dynamic vibration signal amplified vibration monitor parameters than the parameters set by the vibration of the stopper off the power supply port, a pressure industrial control parameter monitoring and vibration monitoring parameter setting parameter setter.
2.根据权利要求1所述的风洞进气道实验动态压力传感器保护装置,其特征在于:所述的压力监测传感器采用PVDF材料压力传感器。 The wind tunnel experiment according to a dynamic intake pressure sensor protection device as claimed in claim, wherein: said pressure sensor monitoring a pressure sensor made of PVDF material.
3.根据权利要求1所述的风洞进气道实验动态压力传感器保护装置,其特征在于:所述的振动监测传感器采用PVDF材料振动传感器。 3. The wind tunnel experiment inlet dynamic pressure sensor protection device according to claim 1, wherein: said sensor is a vibration monitoring vibration sensor PVDF material.
4.根据权利要求1所述的风洞进气道实验动态压力传感器保护装置,其特征在于:所述的压力监测传感器、动态压力传感器和振动监测传感器安装在进气道同一横截面上,并按圆周方向均匀分布,上述三种传感器屏蔽后连接大地。 The wind tunnel experiment according to a dynamic intake pressure sensor protection device as claimed in claim, wherein: said pressure monitoring sensor, a pressure sensor, and the dynamic vibration monitoring sensor mounted on the same cross-section inlet, and circumferentially uniformly distributed, the above three sensors connected to the ground shield.
CN 201110310432 2011-10-13 2011-10-13 Protective device of dynamic pressure sensor used in wind tunnel air inlet experiment CN102426091B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110310432 CN102426091B (en) 2011-10-13 2011-10-13 Protective device of dynamic pressure sensor used in wind tunnel air inlet experiment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110310432 CN102426091B (en) 2011-10-13 2011-10-13 Protective device of dynamic pressure sensor used in wind tunnel air inlet experiment

Publications (2)

Publication Number Publication Date
CN102426091A true CN102426091A (en) 2012-04-25
CN102426091B true CN102426091B (en) 2013-11-06

Family

ID=45960096

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110310432 CN102426091B (en) 2011-10-13 2011-10-13 Protective device of dynamic pressure sensor used in wind tunnel air inlet experiment

Country Status (1)

Country Link
CN (1) CN102426091B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103234756B (en) * 2013-04-16 2015-09-30 中国航空工业集团公司沈阳发动机设计研究所 One kind of a high bypass ratio engine with a mesh distortion means

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1251899A (en) 1998-10-15 2000-05-03 Tlv股份有限公司 Monitor system with internal power supply
CN1722036A (en) 2003-12-02 2006-01-18 中华研升科技股份有限公司 Control system and monitoring apparatus for reaction plant
DE102004039169A1 (en) 2004-08-12 2006-02-23 Kaden, Günther Differential pressure measurement device for use during e.g. natural gas extraction, has pressure sensor for pressure measurement at pressure connections, so that valve unit remains in end position in overload case due to one-sided pressure
CN201060083Y (en) 2007-07-16 2008-05-14 阿尔法仪器(天津)有限公司 Overload protection device of gas pressure sensor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7010459B2 (en) * 1999-06-25 2006-03-07 Rosemount Inc. Process device diagnostics using process variable sensor signal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1251899A (en) 1998-10-15 2000-05-03 Tlv股份有限公司 Monitor system with internal power supply
CN1722036A (en) 2003-12-02 2006-01-18 中华研升科技股份有限公司 Control system and monitoring apparatus for reaction plant
DE102004039169A1 (en) 2004-08-12 2006-02-23 Kaden, Günther Differential pressure measurement device for use during e.g. natural gas extraction, has pressure sensor for pressure measurement at pressure connections, so that valve unit remains in end position in overload case due to one-sided pressure
CN201060083Y (en) 2007-07-16 2008-05-14 阿尔法仪器(天津)有限公司 Overload protection device of gas pressure sensor

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
惠增宏等.进气道实验中动态数据采集及处理方法研究.《实验力学》.2002,第17卷(第1期),第48-54页.
曾祥炜等.梭式管道爆破保护装置的动态特性.《油气储运》.1999,第18卷(第1期),全文.
石培杰等.压杆应变式压力传感器在爆炸冲击波载荷测试中的应用.《振动与冲击》.2007,第26卷(第4期),全文.
韩红彪等.无线存储式爆炸冲击波压阻压力传感器研制.《第五届全国爆炸力学实验技术学术会议论文集》.2010,全文.

Also Published As

Publication number Publication date Type
CN102426091A (en) 2012-04-25 application

Similar Documents

Publication Publication Date Title
CN101915724A (en) Device and method for measuring permeability coefficient of rock material under action of seepage-stress coupling
CN101187589A (en) Method for regulating magnetic levitation vacuum molecular pump rotor dynamic balance
CN202255848U (en) System for detecting high-pressure safety valve
CN101761780A (en) Gas pipeline leakage detecting and positioning device and method thereof
CN101699284A (en) Frozen-soil experiment system capable of applying dynamic load
CN103063557A (en) Device and method for detecting gas permeability of rock
CN201355339Y (en) Calibration device of automatic atmospheric particulate matter monitoring system
CN102183622A (en) Novel unsaturated soil high-pressure consolidation test device
CN201496247U (en) Automatic test system of water pump test bench
CN201421387Y (en) Calibration device for high-range dynamic pressure sensor
CN2751296Y (en) Formation injury tester
CN201228626Y (en) Process real time monitoring and data collecting device for lubricating oil pump test stand
CN200958991Y (en) Rock air permeability examiner
CN101441197A (en) Detection system and detection method of large-scale storage tank bottom corrosion
CN201502410U (en) Static debugging device of steam turbine speed control system
CN201137543Y (en) Oil jetting pump oil spout rule test stand
CN203658217U (en) Seepage starting pressure gradient test device
CN101787715A (en) Method used for testing stability of foundation of fan suspended in road tunnel and system therefor
CN102152173A (en) System for testing relative dynamic stiffness of complete machine in processing center
CN202854036U (en) Carbon monoxide concentration on-line detection device
CN102538929A (en) Measuring device for weight and gravity center of aircraft
CN202614465U (en) Full automatic pressure checking table of high hydrostatic pressure differential pressure transmitter
CN201803838U (en) Multifunctional valve testing system
CN201488746U (en) four-parameter grouting recorder
CN103016958A (en) Method and system for temperature and humidity monitoring of high-energy pipeline subject to medium leakage in nuclear power plant

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C14 Grant of patent or utility model
EXPY Termination of patent right or utility model