CN100487394C - Pipeline fluid noise auxiliary measuring device - Google Patents

Pipeline fluid noise auxiliary measuring device Download PDF

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Publication number
CN100487394C
CN100487394C CN 200610019620 CN200610019620A CN100487394C CN 100487394 C CN100487394 C CN 100487394C CN 200610019620 CN200610019620 CN 200610019620 CN 200610019620 A CN200610019620 A CN 200610019620A CN 100487394 C CN100487394 C CN 100487394C
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pipeline
fluid
noise
auxiliary
measuring
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CN 200610019620
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Chinese (zh)
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CN1888832A (en )
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周轶美
孙晓晖
梁向东
王崇珲
华 谢
赵淑琴
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中国舰船研究设计中心
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Abstract

本发明涉及一种管道流体噪声辅助测量装置。 The present invention relates to a fluid conduit auxiliary noise measuring device. 包括有桶形的声传导水箱,声传导水箱的底部开设有衔接槽孔,衔接槽孔与被测管道相吻合并与外管壁密封连接,声传导水箱中吊挂有水听器。 Comprises a barrel tank sound conduction, acoustic conducting bottom of the tank defines a slot convergence, convergence dovetail slot combined with the process piping connected to the outer wall of the seal, there are hanging acoustic conducting tank hydrophone. 本发明的有益效果在于:1.可以排除管道流体中压力脉动对测量水噪声的影响,直接测量管道中的声信号,解决了从管道压力脉动和水噪声信号混合的流体中提取水声信号的问题。 Advantageous effects of the present invention is that: 1 can eliminate the influence of line fluid pressure pulsations on the measurement of water noise, direct measurement of the acoustic signal in the pipeline, to solve the mixing pipe pressure pulsation and water noise signal from the fluid was extracted acoustic signals problem. 这对于研究管道内流体的噪声及其变化传播规律以及船艇的降噪隐身具有重要意义。 This has important implications for the study of noise in the pipeline fluid and change propagation and noise reduction stealth boats. 2.本发明结构简单,测量方式简便,使用灵活,便于在不同的场所实施,可对在建和已建的管道进行管内流体噪声测试。 2. The present invention is simple in structure, easy measurement, flexible, easy to be implemented in different locations, can be tested for the fluid inside the noise has been built in the construction of pipelines. 3.声传导水箱内敷设吸声层减小了水箱内壁对声波的反射作用,保证了测量数据的线性度和准确性。 Laying the inner tank 3. The acoustic conducting layer reduces the reflection sound absorbing tank on the inner wall of the acoustic wave, to ensure the linearity and accuracy of the measurement data.

Description

管道流体噪声辅助测量装置 Auxiliary line fluid noise measuring device

技术领域 FIELD

本发明属于与声学测量技术有关的装置,具体涉及一种管道流体噪声辅助测量装置。 The present invention pertains to devices associated with the acoustic measurement technique, particularly to a fluid conduit auxiliary noise measuring device. 背景技术 Background technique

船艇的管道是船艇产生水下噪声的源头之一。 The pipeline is one of the sources boats boats produce underwater noise. 船艇管路内流体中的水噪声是直接向外辐射噪声的有效成份。 Water craft noise in the pipeline fluid is the active ingredient direct outward radiation noise. 管道内的流体受到来自自身和外部的激励后将产生水噪声,并向外传播。 Fluid in the tube after excitation by itself and from external noise generated water, and spread outward. 同时流体的压力也因流道截面的变化、管壁粗糙度的影响产生压力脉动。 While the pressure of the fluid also generates pressure pulsation due to changes in channel cross-sectional flow impact, the wall roughness. 在管道内,流体的水噪声和压力脉动都以动态压力的形式存在,且都可沿管内的流体传播,很难在管道内分离。 In the pipe, and water pressure pulsation noise are present in the form of a fluid dynamic pressure, and can be propagated in a fluid along the tube, it is difficult to separate in the pipeline. 但两者的变化和传播规律却各不相同。 However, both the propagation of the change and has different. 水(噪)声是一种声波,可以远距离传播,而且能穿 Water (noise) sound is a sound wave can propagate long distances, but can wear

过液体和固体介质的界面从一种介质传播到另一种介质;压力脉动则是一种压力和流速间相互转换的变化过程,压力脉动在离开管道后便很快消失,遇到固体界面时,压力脉动不能穿透固体介质向外界液体传递,因此压力脉动通常又被称为"伪声"。 When the pressure fluctuation is varied during the inter-conversion between pressure and flow rate, pressure pulsation disappeared soon after leaving the conduit, encounter solid interface; through the liquid and solid media interface propagates from one medium to another medium , can not penetrate the solid medium pressure pulsation transferred to the outside the liquid, so that the pressure pulsation also commonly referred to as "pseudo sound."

控制和降低管道的水噪声是船艇设计、制造和运行中的重要技术指标之一,而实现上述目标的前提是要对管道中产生的水噪声进行准确的测量。 Control and reduce water pipe boats noise is an important design, manufacture and operation of the technical specifications, but is provided to achieve these objectives water pipe noise generated accurate measurement. 而检测管道内流体的水噪声是研究管道流体声辐射的基础,研究管道流体噪声时必须对管道内的流体噪声特性有真实的了解。 Detecting a noise within the water conduit is the basic of the fluid conduit in fluid acoustic radiation, research must have knowledge of the real characteristics of the noise in the pipeline fluid conduit when the fluid noise. 直接在管道内设置传感器是以往人们在测试中常用的测量方法,但该方法所测量的信号是管道内水噪声和压力脉动的合成信号,在测量结果中不可避免地存在"伪声"对水噪声信号的干扰,测量的准确性较差,难以判断管道内实际存在的水噪声及其变化传播规律。 Sensor is directly disposed in the conduit is the test commonly used in the past, people measurement method, but the method of the measured signal is a composite signal pipeline water pressure pulsation and noise, there is inevitably a measurement result "pseudo sound" water interference noise signal, poor accuracy of measurement, the water is difficult to determine the actual presence of noise within the conduit and propagation variations. 发明内容 SUMMARY

本发明所要解决的技术问题是针对上述现有技术存在的不足而提供一种能对管道内流体的压力脉动进行有效屏蔽的管道流体噪声辅助测量装置,为有效检测管道中的水噪声信号提供保障。 The present invention solves the technical problem for the shortcomings of the prior art and to provide a conduit for the fluid pressure pulsations within the fluid conduit will be effective noise shielding auxiliary measuring means, a noise signal to provide protection for the effective detection of water in the pipeline .

本发明为解决上述存在的问题所提出的技术方案为:包括有桶形的声传导水箱,声传导水箱的底部开设有衔接槽孔,衔接槽孔与被测管道相吻合并与外管壁密封连接,声传导水箱中吊挂有水听器。 The present invention is to solve the above problems of the proposed solution is: a barrel including acoustic conducting tank, acoustic conducting defines the bottom of the tank adapter slot, and the slot for the pipe adapter and the outer wall of the seal dovetail combined connection, with a hanging acoustic conducting tank hydrophone.

按上述方案,所述的声传导水箱为长方桶形或圆筒形,声传导水箱可由金属材料制作而成,水箱内壁底部和四周设置吸声层。 According to the above embodiment, the acoustic conducting barrel tank is rectangular or cylindrical, acoustic conducting metallic material may be made of the tank, an inner wall and bottom of the tank set around the sound absorbing layer.

按上述方案,所述的声传导水箱的衔接槽孔与被测管道的外管壁固定密封连接或活动密封连接,衔接槽孔与被测管道的圆管外管壁横向截面的连接包容面小于或等于半个圆管横截 The above-described embodiment, the engagement slot of the measured acoustic conductivity of the outer wall of the tank pipe is fixed or movable sealing-tight connection, connecting an outer wall of a transverse cross section of the tube slot and the adapter for the pipe is less than the surface inclusive or equal to half the tube cross-section

面,即连接包容的弧面小于或等于圆管半周(^n)。 Surface, i.e. inclusive connecting arc tube equal to or less than half (^ n).

本发明使用时只需在声传导水箱中加入水,使被测管道的外管壁与水箱内的水接触,通 Contacting water used in the present invention, when water is added only in tank acoustic conducting, so that the measured outer wall of the pipe and tank, and

过水听器即可有效地检测出管道中的水噪声信号。 Through the hydrophone water can effectively detect a noise signal in the duct. 本发明的工作机理在于:管道的水噪声是一种声波,可以远距离传播,而且能穿过液体和固体介质的界面从一种介质传播到另一种介质;而管道的压力脉动则是一种压力和流速间相互转换的变化过程,压力脉动在离开管道的后便很快消失,遇到固体界面时,压力脉动几乎不能穿透固体介质向外界液体传递。 Working mechanism of the present invention is that: the pipe is a water-noise acoustic wave can propagate long distances, but also across the interface of liquid and solid medium propagates from one medium to another medium; and the pressure pulsation conduit is a interspecific pressure and flow rate conversion process of change, pressure pulsations disappear soon after leaving in the pipeline, the face of solid interface, pressure pulsation can hardly penetrate solid liquid medium passes to the outside world. 因此, 本发明应用声波具有较强透射能力的特性,在管道外附加辅助测量装置,接受透射的声波信号即可屏蔽压力脉动对水噪声测量的干扰,检测管道内流体的水声信号。 Thus, application of the present invention is an acoustic wave having a characteristic strong transmission capacity, the additional pipe outside the auxiliary measuring means, receiving the transmitted acoustic signal interference can shield the water pressure pulsation noise measurements, fluid in the underwater acoustic signal detection conduit.

本发明的有益效果在于:1、采取声传导水箱,可以排除管道流体中压力脉动对测量水噪声的影响,直接测量管道中的声信号,解决了从管道压力脉动和水噪声信号混合的流体中提取水声信号的问题。 Advantageous effects of the present invention is: 1, taking acoustic conducting tank, can eliminate the influence of line fluid pressure pulsations on the measurement of water noise, direct measurement of the acoustic signal in the pipeline, to solve the mixed fluid line pressure pulsations and water noise signal from the acoustic signal extraction problem. 这对于正确了解管道内的噪声特性,研究管道内流体的噪声及其变化传播规律以及船艇的降噪隐身具有重要意义。 This is a proper understanding of the noise characteristics within the pipe, noise in the research pipeline fluid and change propagation and noise reduction stealth boats of great significance. 2、本发明结构简单,测量方式简便,使用灵活, 便于在不同的场所实施,可对在建和己建的管道进行管内流体噪声测试。 2, the structure of the present invention is simple and convenient measurement, flexible, easy to be implemented in different locations, the fluid inside noise test can be performed on the pipeline under construction and already built. 3、声传导水箱内敷设吸声层减小了水箱内壁对声波的反射作用,保证了测量数据的线性度和准确性。 3, the acoustic conducting layer is laid absorption tank inner wall of the tank is reduced as a reflection of the acoustic waves, to ensure the linearity and accuracy of the measurement data. 附图说明 BRIEF DESCRIPTION

图1为本发明一个实施例的正剖视结构图。 Figure 1 is a front cross-sectional structural view of an embodiment of the present invention. 图2为本发明另一个实施例的正剖视结构图。 Another embodiment of the sectional structure of FIG n 2 of the present invention. 具体实施方式 detailed description

以下结合附图进一步说明本发明的实施例。 Further embodiments described below in conjunction with the accompanying drawings of embodiments of the present invention. 第一个实施例如图1所示,包括有桶形的声传导水箱2,声传导水箱的底部开设有与被测管道直径等宽的衔接槽孔,衔接槽孔两端开设半圆孔与被测管道相吻合,衔接槽孔与圆管外管壁横向截面的连接包容面等于半个圆管横截面,声传导水箱的衔接槽孔与被测管道1的外管壁焊接成一体,构成固定密封连接结构,声传导水箱由金属材料制作而成,水箱内壁底部和四周衬垫吸声层3,吸声层可为吸声橡胶,目的是减小水噪声在声传导水箱内的反射, 减少测量数据的失真。 For example a first embodiment shown in FIG. 1, comprises a sound-conducting barrel tank 2, the sound conduction opening of the bottom of the tank with a slot width of convergence and the measured pipe diameter, etc., both ends of the slot defines a semi circular adapter with test conduit coincide, the engagement slot is connected with the transverse section of the outer tube wall surface of the containment tube is equal to half the cross-section, the tank acoustic conducting engagement with the test slot wall of the outer pipe 1 is welded integrally, constituting the fixed seal connection structure, acoustic conducting tank made of metallic material, the inner wall of the tank bottom and sides liner sound absorbing layer 3, may be a sound-absorbing absorption layer of rubber, the purpose of reducing the conduction noise reflections within the water tank in the sound, to reduce measurement distortion of the data. 在声传导水箱的上端安设有吊线杆4,吊线杆通过吊线将水听器5吊挂在声传导水箱中。 At the upper end of the tank acoustic conducting safety bar 4 is provided with hanging, hanging suspension wire rod by the hanging 5 hydrophone acoustic conducting tank.

第二个实施例如图1所示,它与上一个实施例的不同之处在于声传导水箱的衔接槽孔与被测管道的外管壁为活动密封连接,即在声传导水箱的底部设置活动密封连接的衔接槽孔, 包括衔接槽孔和与衔接槽孔环形周边相配置的密封垫6,对应于衔接槽孔设置有紧固卡箍9, 紧固卡箍通过两侧的连接孔与固联在声传导水箱底面的螺栓7相联,与衔接槽孔成合抱状, 通过旋紧和调节螺母8,将声传导水箱密封连接于被测管道上,且被测管道的外管壁与声传导水箱的内腔相通,此外,在紧固卡箍的内侧可安设橡胶垫10,起保护被测管道的作用。 The second embodiment differs from the example shown in Figure 1, which embodiment is one wherein the outer wall of the acoustic conducting engagement with the slot for the pipe connecting the tank to the movable sealing, i.e., the conductive tank bottom portion of the acoustic activity sealing engagement slot connection, including a seal with the engagement slots and a slot engagement with the periphery of the annular pad 6 arranged corresponding to the engagement slot 9 is provided, on both sides of the fastening clamp connection hole through a solid fastening clip in the bottom of the tank with the sound conduction associated bolt 7, an adapter encircle the slot into shape by tightening and adjusting nuts 8, the acoustic conducting test tank sealingly connected to the conduit, and the outer wall of the acoustic pipe test conductive inner cavity of the tank, in addition, the inside of the fastening clamp may install the rubber pad 10, the protective role for the pipe. 由此构成活动密封连接的衔接槽孔。 Thereby forming a sealed connection adapter slot activity. 本实施例的其它结构与第一个实施例相同。 Other configurations of the first embodiment according to the present embodiment is the same as an embodiment.

Claims (9)

  1. 1、一种管道流体噪声辅助测量装置,其特征在于包括有桶形的声传导水箱,声传导水箱的底部开设有衔接槽孔,衔接槽孔与被测管道相吻合并与外管壁密封连接,声传导水箱中吊挂有水听器。 A fluid conduit auxiliary noise measuring device, characterized by comprising a sound-conducting barrel tank, acoustic conducting bottom of the tank defines a slot convergence, convergence dovetail slot for the pipe combined with the outer wall of a sealed connection , hanging there acoustic conducting tank hydrophone.
  2. 2、 按权利要求1所述的管道流体噪声辅助测量装置,其特征在于所述的声传导水箱为长方桶形或圆筒形。 2, according to claim fluid conduit means of said auxiliary measuring noise 1, wherein said acoustic conducting barrel tank is rectangular or cylindrical.
  3. 3、 按权利要求l或2所述的管道流体噪声辅助测量装置,其特征在于声传导水箱可由金属材料制作而成,水箱内壁底部和四周设置吸声层。 3, according to claim l auxiliary noise measuring fluid conduit means or 2, wherein the acoustic conducting tank may be made of a metal material, an inner wall and bottom of the tank set around the sound absorbing layer.
  4. 4、 按权利要求1或2所述的管道流体噪声辅助测量装置,其特征在于所述的声传导水箱的衔接槽孔与被测管道的外管壁固定密封连接。 4. A process according to claim auxiliary noise measuring fluid conduit means to claim 1 or 2, characterized in that the outer wall of said acoustic conducting stationary seal tank adapter for the pipe connecting the slot.
  5. 5、 按权利要求1或2所述的管道流体噪声辅助测量装置,其特征在于所述的声传导水箱的衔接槽孔与被测管道的外管壁活动密封连接。 5. A process as claimed in claim auxiliary noise measuring fluid conduit means to claim 1 or 2, characterized in that the outer wall of said acoustic conducting activities tank adapter slot for the pipe and sealed connection.
  6. 6、 按权利要求5所述的管道流体噪声辅助测量装置,其特征在于衔接槽孔与被测管道的圆管外管壁横向截面的连接包容面小于或等于半个圆管横截面。 6. The fluid as claimed in claim auxiliary measuring noise in said conduit means 5, characterized in that the transverse cross section of the connection tube and the outer wall of the slot for the pipe adapter containment tube surface than or equal to half the cross-section.
  7. 7、 按权利要求1或2所述的管道流体噪声辅助测量装置,其特征在于在声传导水箱的上端安设有吊线杆,吊线杆通过吊线将水听器吊挂在声传导水箱中。 7. The fluid as claimed in claim conduit means or auxiliary measuring noise according to 1 or 2, characterized in that the upper end of the safety tank is provided with acoustic conducting mast crane, hanging suspension wire rod by hanging the hydrophone acoustic conducting tank.
  8. 8、 按权利要求5所述的管道流体噪声辅助测量装置,其特征在于所述的活动密封连接的衔接槽孔包括衔接槽孔和与衔接槽孔环形周边相配置的密封垫,对应于衔接槽孔设置有紧固卡箍,紧固卡箍通过两侧的连接孔与固联在声传导水箱底面的螺栓相联,与衔接槽孔成合抱状,通过旋紧和调节螺母,将声传导水箱密封连接于被测管道上。 8. The fluid as claimed in claim auxiliary measuring noise in said conduit means 5, characterized in that the active adapter comprises a sealed connection adapter slot and a slot engagement with slots disposed annular peripheral gasket, corresponding to the engagement groove a fastening hole is provided with a clamp, a fastening clip fixedly connected through the connection holes on both sides of the sound conduction in the bottom of the tank bolt associated with the adapter encircle the slot into shape by tightening and adjustment nut, the acoustic conducting tank connected to the pipe seal test.
  9. 9、 按权利要求4所述的管道流体噪声辅助测量装置,其特征在于声传导水箱的衔接槽孔与被测管道的外管壁焊接成一体,构成固定密封连接结构。 9. The fluid as claimed in claim auxiliary measuring noise in said conduit means 4, characterized in that the outer wall of the tank acoustic conducting engagement with the test slot integrally welded pipe, constituting the fixed sealed connection structure.
CN 200610019620 2006-07-13 2006-07-13 Pipeline fluid noise auxiliary measuring device CN100487394C (en)

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CN102322935B (en) * 2011-08-22 2013-05-08 江苏大学 Flowing noise measuring device
CN102754593B (en) * 2012-07-24 2014-10-22 陕西师范大学 Breeding ultrasound device
CN103278234A (en) * 2013-05-31 2013-09-04 江苏大学 Hydraulic machinery operation monitoring device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2089112U (en) 1991-02-07 1991-11-20 宋振华 Noise and wave absorbers for hydraulic system
CN2328012Y (en) 1998-02-24 1999-07-07 宝山钢铁(集团)公司 Water tank for ultrasonic flow detection
US5987990A (en) 1997-05-13 1999-11-23 Pipeline Technologies, Inc. System of autonomous sensors for pipeline inspection
WO2004025290A1 (en) 2002-09-10 2004-03-25 The University Of Bristol Coupling element with a varying wall thickness for an ultrasound probe
CN2793713Y (en) 2005-02-21 2006-07-05 天津大学 Kinetic waveguiding pipeline monitoring sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2089112U (en) 1991-02-07 1991-11-20 宋振华 Noise and wave absorbers for hydraulic system
US5987990A (en) 1997-05-13 1999-11-23 Pipeline Technologies, Inc. System of autonomous sensors for pipeline inspection
CN2328012Y (en) 1998-02-24 1999-07-07 宝山钢铁(集团)公司 Water tank for ultrasonic flow detection
WO2004025290A1 (en) 2002-09-10 2004-03-25 The University Of Bristol Coupling element with a varying wall thickness for an ultrasound probe
CN2793713Y (en) 2005-02-21 2006-07-05 天津大学 Kinetic waveguiding pipeline monitoring sensor

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