|Publication number||CN100487394 C|
|Application number||CN 200610019620|
|Publication date||13 May 2009|
|Filing date||13 Jul 2006|
|Priority date||13 Jul 2006|
|Also published as||CN1888832A|
|Publication number||200610019620.5, CN 100487394 C, CN 100487394C, CN 200610019620, CN-C-100487394, CN100487394 C, CN100487394C, CN200610019620, CN200610019620.5|
|Inventors||周轶美, 孙晓晖, 梁向东, 王崇珲, 华 谢, 赵淑琴|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Classifications (1), Legal Events (4)|
|External Links: SIPO, Espacenet|
管道流体噪声辅助测量装置 Auxiliary line fluid noise measuring device
技术领域 Technical 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 invention belongs to the acoustic measurement technology-related equipment, in particular to a fluid conduit auxiliary noise measuring device. 背景技术 Background
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。 Boats in the fluid in the water line is directly outside noise radiated noise of the active ingredient. 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。 The fluid inside the pipe will receive incentives from the water itself and the external noise generated 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 is also due to changes in the flow channel cross section, the wall roughness of the pressure pulsation. 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, the water flow noise and pressure pulsation in the form of dynamic pressure exists, and can be spread along the tube within the fluid, is difficult to separate in the pipeline. 但两者的变化和传播规律却各不相同。 But change and propagation of both but 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 also 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 pulsation is a process of change between pressure and flow rate conversion, the pressure pulsation in the pipeline after leaving soon disappear, met solid interface; through the liquid and solid media interface propagates from one medium to another medium , pressure pulsation can not penetrate solid liquid transfer medium to the outside world, so that the pressure pulsation is usually also called "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 noise is one boat design, manufacture and operation of the important technical indicators, and the premise to achieve these goals is to pipe water generated noise accurate measurements. 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。 The water noise in the detection of fluid in the pipeline is the basic research pipeline fluid acoustic radiation, the study must be fluid noise characteristics within the pipe when the pipe has a real understanding of 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。 Set the sensor directly in the pipeline is the past, people used in the test measurement methods, but the method of the measured signal is a synthesized signal noise and pipe water pressure pulsation inevitably exist "pseudo sound" of water in the measurement results interference noise signal measurement accuracy is poor, it is difficult to determine the actual presence of water in the pipe and change propagation of noise. 发明内容 DISCLOSURE
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 technical problem to be solved is for the deficiencies of the prior art described above and to provide a fluid pressure within the pipeline pulsation effective shielding pipe flow measurement device noise assist, to provide protection for the effective detection of water in the pipes of the noise signal .
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 solves the above problems of the proposed technical solutions are: including tank barrel of sound conduction, sound conduction bottom of the tank opened a link Slots, Slots and cohesion for the pipe and the outer wall of the sealing kiss merger connection, sound conduction tank hanging there hydrophones.
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 program, the sound conduction water tank is rectangular or cylindrical barrel, sound conduction water tank may be made of a metallic material, arranged around the bottom of the tank wall and the sound absorption 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 According to the above scheme, the convergence of sound conduction pipe slot with the measured outer tank wall fixed or movable sealing tight connection, the connection pipe outer wall adapter slots and the measured transverse cross-section of the pipe surface tolerance of less than or equal to half the pipe cross-section
面，即连接包容的弧面小于或等于圆管半周（^n)。 Face, namely arc connection inclusive than or equal to half the pipe (^ 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 The present invention when used only in the sound conduction tank water was added so that the measured outer wall of the pipe and the tank water contact, through
过水听器即可有效地检测出管道中的水噪声信号。 Over the hydrophone can effectively detect water in the pipes of the noise signal. 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。 The working mechanism of the present invention comprising: a water pipe noise sound waves, can propagate long distances, but also across the interface of liquid and solid media propagation from one medium to another medium; and the pressure pulsation conduit is a Changes of interspecies conversion between pressure and flow rate, pressure pulsation in the pipeline after leaving soon disappear, the face of solid interface, pressure pulsation can hardly penetrate solid medium liquid to pass 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, the application of the present invention has the characteristics of a strong sound wave transmission capability of the outer pipe additional auxiliary measuring apparatus for receiving the transmitted acoustic signal interference can be shielded pressure pulsation noise measurements on the water, in the detection of underwater acoustic signal line fluid.
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。 The beneficial effects of the present invention is: 1, take the sound conduction water tank, you can eliminate the influence of the fluid conduit to measure water pressure pulsation noise, direct measurement of acoustic signals in the pipeline, to solve the water pipeline pressure pulsation and noise signal from the mixing of the fluid underwater 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, the noise study in the fluid conduit and change propagation and stealth boat noise reduction is significant. 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, easy measurement, flexible, easy to implement in different places, may have been built in the construction of the pipeline fluid noise test tube. 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 water tank laying sound conduction absorption layer reduces the reflection of sound waves in the inner wall of the tank, to ensure the linearity and accuracy of 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 of the present invention a front sectional structural view of the embodiment. 图2为本发明另一个实施例的正剖视结构图。 Figure 2 is another embodiment of the invention are cross-sectional structural view. 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 explained below in conjunction with the accompanying drawings 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。 The first embodiment, as shown in Figure 1, including the barrel of sound conduction water tank 2, the sound conduction bottom of the tank opened a pipe diameter of equal width and measured convergence Slots, Slots link ends open and measured semi-circular hole pipeline coincides with the barrel adapter connection slot transverse section of the outer wall surface equal to half of inclusive cross-section of the pipe, the pipe adapter slots and the measured acoustic conductivity of the outer wall of the tank 1 is welded into one, forming a fixed seal connecting structure, sound conduction water tank made from a metal material from the bottom of the tank wall and the sound absorption layer around the liner 3, acoustic sound-absorbing rubber layer may be, the purpose is to reduce the noise in the acoustic reflex water tank conduction, 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 sound conduction water tank with a crane mast 4 Ann, hanging by hanging line mast hydrophones 5 hanging in the sound conduction 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。 Differs from the second embodiment, as shown, it is the previous embodiment of FIG. 1 embodiment is that the outer wall of sound conduction pipe adapter slots and tested for activity sealed tank connection, ie sound conduction in the bottom of the tank set up activities Seal adapter slot connections, including convergence and cohesion Slots Slots and sealing ring surrounding the pad configuration phase 6, which corresponds to the convergence slot with a fastening clamp 9, the fastening clamp connection hole through both sides of the solid United in the sound conduction bottom of the tank bolts 7 associated with convergence to encircle the slot-like, by tightening and adjusting nut 8, the sound conduction tank seal attached to the test pipe and the outer wall of sound for the pipe conduction tank interior chamber, in addition, on the inside of the fastening clamp can install the rubber pad 10, serves as protection for the pipe. 由此构成活动密封连接的衔接槽孔。 Thereby forming a sealed connection of the adapter slot activity. 本实施例的其它结构与第一个实施例相同。 Other structures of a first embodiment of the present embodiment.
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|13 May 2009||C14||Grant of patent or utility model|
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