CN115356113B - A device for measuring the outlet temperature and pressure of a compressor in an engine - Google Patents
A device for measuring the outlet temperature and pressure of a compressor in an engine Download PDFInfo
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
本发明公开了一种飞机发动机中压气机出口温度和压力测量装置，包括两端开口的筒状壳体、传感器安装座、固定套设在筒状壳体外壁上端的螺栓限位盘、若干螺栓紧固组件、中部固定套设在筒状壳体内的探测杆。本发明可以在发动机压气机出口截面，采用一个传感器，测量温度和总压力，对于发动机各截面，采用最少的传感器测量发动机温度和压力，可以减少传感器对发动机气动流场的扰流，还可以减少传感器对发动机流道的阻塞。本发明可以实现在发动机运行过程中，在不冷却停车的情况下，完成发动机压气机出口温度传感器的更换，避免了不必要的起动过程，节省发动机冷却停车和再起动加温时间，降低了发动机运转所带来的燃油消耗费用。
The present invention discloses a device for measuring the temperature and pressure of a compressor outlet in an aircraft engine, comprising a cylindrical shell with openings at both ends, a sensor mounting seat, a bolt limit plate fixedly sleeved on the upper end of the outer wall of the cylindrical shell, a plurality of bolt fastening assemblies, and a detection rod fixedly sleeved in the middle of the cylindrical shell. The present invention can use a sensor to measure the temperature and total pressure at the outlet section of the engine compressor, and use the least number of sensors to measure the engine temperature and pressure for each section of the engine, which can reduce the disturbance of the engine aerodynamic flow field by the sensor, and can also reduce the blockage of the engine flow channel by the sensor. The present invention can achieve the replacement of the engine compressor outlet temperature sensor during the operation of the engine without cooling and stopping, avoiding unnecessary starting process, saving the engine cooling and stopping and restarting warm-up time, and reducing the fuel consumption cost caused by engine operation.
Description
技术领域Technical Field
本发明属于发动机流场检测技术领域，涉及一种温度和压力测量装置，具体涉及一种发动机中压气机出口温度和压力测量装置，应用于发动机整机状态下压气机出口截面温度和压力的测量，亦可应用于压气机和涡轮部件的试验测试，特别适用于对发动机或部件试验流通阻力和扰流大的流场测量中。The present invention belongs to the technical field of engine flow field detection, and relates to a temperature and pressure measuring device, and specifically to a compressor outlet temperature and pressure measuring device in an engine. The present invention is applied to the measurement of the compressor outlet cross-section temperature and pressure in the engine as a whole, and can also be applied to the test of compressor and turbine components, and is particularly suitable for the flow field measurement of large flow resistance and turbulence in engine or component tests.
背景技术Background technique
现有一些飞机发动机录取性能试车前，需要拆下发动机机匣上的堵头，然后再安装温度传感器(即安装压气机出口温度热电偶)和总压力传感器(或叫受感部)，以达到飞机发动机开车时，测量压气机后温度和总压力计算发动机性能的目的。发动机录取性能之后，发动机需要停车，拆除温度传感器和压力传感器，然后回装机匣堵头，再起动发动机加温后完成后续试车内容。这样的工作不仅造成温度传感器工作时间长，还在录取性能之外，增加了发动机运转时间。而在发动机运转状态，机匣壳体300多度，温度非常高，操纵人员无法实现从发动机上拆下温度传感器。此外，对应测量用传感器而言，其使用寿命和使用期限都是有限的，发动机试验测试中，尽量减少测量传感器的使用时间，可以降低传感器的损耗。因而亟待发明一种专用于发动机压气机出口温度和压力测量的传感器，仅在发动机录取性能时，可快速安装于高温发动机上，录取性能之后，发动机不停车状态，再拆卸下来。这样就可以解决发动机试车时，在高温环境下无法拆下传感器的技术难题。Before the performance test of some existing aircraft engines, it is necessary to remove the plug on the engine casing, and then install the temperature sensor (i.e., install the compressor outlet temperature thermocouple) and the total pressure sensor (or the sensing part) to achieve the purpose of measuring the temperature and total pressure after the compressor to calculate the engine performance when the aircraft engine is started. After the engine is recorded, the engine needs to be stopped, the temperature sensor and pressure sensor are removed, and then the casing plug is reinstalled, and the engine is started to warm up and complete the subsequent test content. Such work not only causes the temperature sensor to work for a long time, but also increases the engine operation time in addition to recording performance. When the engine is running, the casing shell is more than 300 degrees, and the temperature is very high. The operator cannot remove the temperature sensor from the engine. In addition, for the corresponding measurement sensor, its service life and service life are limited. In the engine test, minimizing the use time of the measurement sensor can reduce the loss of the sensor. Therefore, it is urgent to invent a sensor dedicated to measuring the temperature and pressure of the engine compressor outlet, which can be quickly installed on the high-temperature engine only when the engine is recorded, and after the performance is recorded, the engine is not stopped and then removed. This can solve the technical problem of not being able to remove the sensor in a high temperature environment during engine testing.
发明内容Summary of the invention
(一)发明所要解决的技术问题(1) Technical problem to be solved by the invention
针对现有技术的上述缺陷和不足，本发明旨在提供一种发动机中压气机出口温度和压力测量装置，可以在发动机压气机出口截面，通过一个测量装置测量温度和总压力，降低了传感器对发动机截面的堵塞作用。另外，本发明可使发动机试车中，在不停车冷却的情况下，完成堵头与压气机出口温度传感器更换，避免增加发动机多余的运转时间。减少了发动机起动次数，单台发动机上缩短了传感器的使用时间，延长了传感器的使用期限和使用寿命。In view of the above-mentioned defects and deficiencies of the prior art, the present invention aims to provide a device for measuring the temperature and pressure of the compressor outlet in the engine, which can measure the temperature and total pressure through a measuring device at the compressor outlet section of the engine, thereby reducing the blocking effect of the sensor on the engine section. In addition, the present invention can complete the replacement of the plug and the compressor outlet temperature sensor during the engine test without stopping the engine for cooling, thereby avoiding the increase of unnecessary engine operation time. The number of engine starts is reduced, the use time of the sensor on a single engine is shortened, and the service life and service life of the sensor are extended.
(二)发明为解决技术问题所采用的技术方案(ii) The technical solution adopted by the invention to solve the technical problem
一种发动机中压气机出口温度和压力测量装置，包括一两端开口的筒状壳体、一固定套设在所述筒状壳体外壁下端的传感器安装座、一固定套设在所述筒状壳体外壁上端的螺栓限位盘、若干螺栓紧固组件、一中部固定套设在所述筒状壳体内的探测杆，其特征在于，A device for measuring the temperature and pressure of a compressor outlet in an engine comprises a cylindrical shell with openings at both ends, a sensor mounting seat fixedly sleeved at the lower end of the outer wall of the cylindrical shell, a bolt limiting plate fixedly sleeved at the upper end of the outer wall of the cylindrical shell, a plurality of bolt fastening assemblies, and a detection rod fixedly sleeved in the middle of the cylindrical shell, characterized in that:
所述传感器安装座以与所述筒状壳体的外壁之间在高温高压流体环境下流体不泄露的方式固定套设在所述筒状壳体的外壁上；The sensor mounting seat is fixedly sleeved on the outer wall of the cylindrical shell in a manner that the fluid does not leak between the sensor mounting seat and the outer wall of the cylindrical shell in a high-temperature and high-pressure fluid environment;
所述传感器安装座与螺栓限位盘上均设有若干螺栓安装孔，且所述传感器安装座上的各所述螺栓安装孔在上下方向上一一对应；The sensor mounting seat and the bolt limiting plate are both provided with a plurality of bolt mounting holes, and the bolt mounting holes on the sensor mounting seat correspond one to one in the up and down directions;
每一所述螺栓紧固组件均包括一螺栓和一与螺栓相配合的螺母，每一所述螺栓依次穿过所述螺栓限位盘、传感器安装座上对应的螺栓安装孔后其端部与发动机中压气机排气口处机匣壳体上的传感器固定座上的螺纹孔固定连接，各所述螺栓全部安装后，所述传感器安装座被固定安装在压气机排气口处机匣壳体上的传感器固定座上；Each of the bolt fastening assemblies comprises a bolt and a nut matched with the bolt. After each of the bolts passes through the bolt limiting plate and the corresponding bolt mounting holes on the sensor mounting seat in sequence, the end of the bolt is fixedly connected with the threaded hole on the sensor mounting seat on the casing at the exhaust port of the compressor in the engine. After all the bolts are installed, the sensor mounting seat is fixedly installed on the sensor mounting seat on the casing at the exhaust port of the compressor.
且每一所述螺栓在穿过所述螺栓限位盘上对应的螺栓安装孔后，与之相配合的螺母即安装在所述螺栓上，在需要进行所述温度和压力测量装置的安装时，所述螺栓继续穿过所述传感器安装座上对应的螺栓安装孔，之后其端部与发动机中压气机排气口处机匣壳体上的传感器固定座上的螺纹孔固定连接，所述螺母的安装方式用于防止螺栓在安装过程中脱落至发动机的热环境中；After each of the bolts passes through the corresponding bolt mounting hole on the bolt limiting plate, a nut matching with the bolt is installed on the bolt. When the temperature and pressure measuring device needs to be installed, the bolt continues to pass through the corresponding bolt mounting hole on the sensor mounting seat, and then the end of the bolt is fixedly connected with the threaded hole on the sensor fixing seat on the casing at the exhaust port of the compressor in the engine. The installation method of the nut is used to prevent the bolt from falling off into the hot environment of the engine during the installation process.
所述探测杆中部的外壁以在高温高压流体环境下流体不泄露的方式固定穿设在所述筒状壳体的内壁上；The outer wall of the middle part of the detection rod is fixedly penetrated on the inner wall of the cylindrical shell in a way that the fluid does not leak in a high-temperature and high-pressure fluid environment;
所述探测杆为一顶端开口而底端封闭的空心杆状体，所述探测杆位于所述筒状壳体下方的杆体表面上设有若干沿高度方向分布的管状探测头，每一所述管状探测头均沿水平方向延伸，且其头部开口、尾部与所述探测杆的中空腔体连通；The detection rod is a hollow rod-shaped body with an open top and a closed bottom. The detection rod is provided with a plurality of tubular detection heads distributed along the height direction on the rod surface below the cylindrical shell. Each of the tubular detection heads extends in the horizontal direction, and its head is open and its tail is connected to the hollow cavity of the detection rod.
所述探测杆的中空腔体内设有若干总压引气管和若干感温元件，其中，每一所述总压引气管均对应一所述管状探测头，且每一所述总压引气管和与其对应的管状探测头的尾部之间以流体不泄露的方式相互连接，对应的管状探测头形成为总压受感部；每一所述感温元件均包括一温度受感部和与所述温度受感部相连接的信号传输电缆，每一所述温度受感部均对应固定设置在一所述管状探测头内，其信号传输电缆的主体部分布置在所述探测杆的中空腔体内，所述温度受感部用于探测进入所述管状探测头内的高温流体的温度，其信号传输电缆用以将温度信号传输至外部的温度测量设备上。A plurality of total pressure air ducts and a plurality of temperature sensing elements are provided in the hollow cavity of the detection rod, wherein each of the total pressure air ducts corresponds to a tubular detection head, and each of the total pressure air ducts and the tail of the corresponding tubular detection head are connected to each other in a fluid-tight manner, and the corresponding tubular detection head forms a total pressure sensing part; each of the temperature sensing elements includes a temperature sensing part and a signal transmission cable connected to the temperature sensing part, and each of the temperature sensing parts is fixedly arranged in a corresponding tubular detection head, and the main part of the signal transmission cable is arranged in the hollow cavity of the detection rod, and the temperature sensing part is used to detect the temperature of the high-temperature fluid entering the tubular detection head, and the signal transmission cable is used to transmit the temperature signal to an external temperature measuring device.
优选地，所述筒状壳体、传感器安装座、螺栓限位盘为一体成型部件，其内部开槽形成为两端开口的筒状结构。Preferably, the cylindrical housing, the sensor mounting seat and the bolt limiting plate are integrally formed components, and the internal grooves thereof are formed into a cylindrical structure with openings at both ends.
优选地，所述探测杆中部的外壁以焊接方式与所述筒状壳体的内壁固定连接，二者之间形成在高温高压流体环境下流体不泄露的密封结构。Preferably, the outer wall of the middle portion of the detection rod is fixedly connected to the inner wall of the cylindrical shell by welding, and a sealing structure is formed therebetween to prevent fluid leakage in a high-temperature and high-pressure fluid environment.
优选地，在所述探测杆的中空腔体内，为获得良好绝缘性，各所述感温元件的信号传输电缆与总压引气管之间用高温绝缘材料填充。Preferably, in the hollow cavity of the detection rod, in order to obtain good insulation, the space between the signal transmission cable of each temperature sensing element and the total pressure air duct is filled with high-temperature insulating material.
优选地，各所述总压引气管和感温元件的信号传输电缆使用耐高温硅胶封堵的方式固定设置在所述探测杆的中空腔体内。Preferably, each of the total pressure air ducts and the signal transmission cable of the temperature sensing element is fixedly arranged in the hollow cavity of the detection rod by means of high temperature resistant silicone sealing.
优选地，所述温度受感部为铂电阻受感部，每一所述铂电阻受感部均包括两根信号传输电缆，两根信号传输电缆集束为一根线束固定在所述探测杆的中空腔体内。温度受感部利用铂金属的电阻值随温度的变化而变化并近似成正比的特性。采用分度号为Pt100的铂电阻作为感温元件，当环境温度变化时，感温原件感受到温度变化而发生电阻值变化，通过检测铂电阻的电阻值，即可确定传感器感温元件所在环境的温度。正常条件下，用100DC兆欧表测量每根导线与壳体之间，以及每组铂电阻的2个导线之间的绝缘电阻不小于100MΩ。Preferably, the temperature sensing part is a platinum resistor sensing part, and each of the platinum resistor sensing parts includes two signal transmission cables, and the two signal transmission cables are bundled into a harness and fixed in the hollow cavity of the detection rod. The temperature sensing part utilizes the property that the resistance value of platinum metal changes with the change of temperature and is approximately proportional. A platinum resistor with a graduation number of Pt100 is used as a temperature sensing element. When the ambient temperature changes, the temperature sensing element senses the temperature change and the resistance value changes. By detecting the resistance value of the platinum resistor, the temperature of the environment where the sensor temperature sensing element is located can be determined. Under normal conditions, the insulation resistance between each wire and the shell, and between the two wires of each group of platinum resistors measured with a 100DC megohmmeter is not less than 100MΩ.
优选地，所述探测杆位于所述筒状壳体上方的杆体部分，其顶部进一步设置有用以固定信号传输电缆和总压引气管的支架。Preferably, the detection rod is located at the rod body portion above the cylindrical shell, and a bracket for fixing the signal transmission cable and the total pressure air duct is further provided on the top of the detection rod.
本发明的发动机中压气机出口温度和压力测量装置，其工作原理为：The working principle of the device for measuring the outlet temperature and pressure of the compressor of the engine of the present invention is as follows:
发动机录取性能阶段，发动机正常开车运转，在录取性能前一个低工况状态，用工具拧下固定在发动机压气机机匣壳体的传感器固定座处堵头上的螺钉，拆下堵头，将本发明的发动机中压气机出口温度和压力测量装置的探测杆伸入发动机压气机流通通道内，受感部位迎向进气方向，传感器底座与机匣壁面上的传感器固定座接合，调好位置后，再用工具通过拧紧压气机出口螺栓限位盘上的螺钉紧固在发动机传感器固定座上，配套电缆接到发动机试车台对应的数据采集系统上。总压受感部引气管，对应连接到试车的压力传感器上。提高发动机转速，录取发动机各工况点性能。录取性能结束后，降低发动机到最低工况，按上述相反工作，用工具拆下本发明的温度和压力测量装置，回装发动机传感器固定座上的堵头，之后可以完成后续试车内容。During the performance recording stage of the engine, the engine is started and operated normally. In the low working condition before the performance recording, use a tool to unscrew the screws on the plug fixed on the sensor fixing seat of the engine compressor casing housing, remove the plug, and extend the detection rod of the engine compressor outlet temperature and pressure measuring device of the present invention into the engine compressor flow channel, with the sensing part facing the air intake direction, and the sensor base is engaged with the sensor fixing seat on the casing wall. After adjusting the position, use a tool to tighten the screws on the compressor outlet bolt limit plate to fasten it to the engine sensor fixing seat, and the matching cable is connected to the corresponding data acquisition system of the engine test bench. The total pressure sensing part of the air bleed pipe is connected to the pressure sensor of the test run. Increase the engine speed and record the performance of each operating point of the engine. After the performance recording is completed, reduce the engine to the lowest working condition, and work in the opposite way as above. Use a tool to remove the temperature and pressure measuring device of the present invention, and reinstall the plug on the engine sensor fixing seat, and then the subsequent test run content can be completed.
(三)本发明取得的技术效果和优点(III) Technical effects and advantages achieved by the present invention
本发明的发动机中压气机出口温度和压力测量装置，可以在发动机压气机出口截面，采用一个传感器，测量温度和总压力，对于发动机各截面，采用最少的传感器测量发动机温度和压力，可以减少传感器对发动机气动流场的扰流，还可以减少传感器对发动机流道的阻塞。本发明可以实现在发动机运行过程中，在不冷却停车的情况下，完成发动机压气机出口温度传感器的更换，避免了不必要的起动过程，节省发动机冷却停车和再起动加温时间，降低了发动机运转所带来的燃油消耗费用。The device for measuring the outlet temperature and pressure of the compressor of the engine of the present invention can use a sensor to measure the temperature and total pressure at the outlet section of the compressor of the engine. For each section of the engine, the least sensors are used to measure the temperature and pressure of the engine, which can reduce the disturbance of the sensor to the aerodynamic flow field of the engine and reduce the blockage of the sensor to the flow channel of the engine. The present invention can achieve the replacement of the outlet temperature sensor of the compressor of the engine during the operation of the engine without cooling and stopping, avoiding unnecessary starting process, saving the time of cooling and stopping the engine and restarting and heating, and reducing the fuel consumption cost caused by the operation of the engine.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明的发动机中压气机出口温度和压力测量装置的正视图；FIG1 is a front view of a device for measuring the compressor outlet temperature and pressure in an engine according to the present invention;
图2为本发明的温度和压力测量装置的侧视图；FIG2 is a side view of a temperature and pressure measuring device of the present invention;
图3为本发明的温度和压力测量装置的剖视图；FIG3 is a cross-sectional view of a temperature and pressure measuring device of the present invention;
图4为本发明中探测杆的局部放大示意图。。FIG4 is a partial enlarged schematic diagram of the detection rod in the present invention.
附图标记说明：Description of reference numerals:
筒状壳体1，传感器安装座2，螺栓限位盘3，螺栓紧固组件4，探测杆5，管状探测头51，总压引气管52，信号传输电缆53，温度受感部54，支架6。Cylindrical shell 1, sensor mounting seat 2, bolt limit plate 3, bolt fastening assembly 4, detection rod 5, tubular detection head 51, total pressure air duct 52, signal transmission cable 53, temperature sensing part 54, bracket 6.
具体实施方式Detailed ways
为了更好的理解本发明，下面结合实施例进一步阐明本发明的内容，以使本发明的优点和特征能更易于被本领域技术人员理解。需要说明的是，以下所述仅为本发明的较佳实施例，但本发明的内容不局限于下面的实施例。实际上，在未背离本发明的范围或精神的情况下，可以在本发明中进行各种修改和变化，这对本领域技术人员来说将是显而易见的。例如，作为一个实施例的一部分示出或描述的特征可以与另一个实施例一起使用来产生又一个实施例。因此，意图是本发明将这样的修改和变化包括在所附的权利要求书和它们的等同物的范围内。In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiment, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the following is only a preferred embodiment of the present invention, but the content of the present invention is not limited to the following embodiments. In fact, various modifications and changes can be made in the present invention without departing from the scope or spirit of the present invention, which will be apparent to those skilled in the art. For example, the features shown or described as a part of an embodiment can be used together with another embodiment to produce another embodiment. Therefore, it is intended that the present invention includes such modifications and changes within the scope of the appended claims and their equivalents.
如图1-4所示，本发明的发动机中压气机出口温度和压力测量装置，包括一两端开口的筒状壳体1、一固定套设在筒状壳体1外壁下端的传感器安装座2、一固定套设在筒状壳体1外壁上端的螺栓限位盘3、若干螺栓紧固组件4、一中部固定套设在筒状壳体内的探测杆5。筒状壳体1、传感器安装座2、螺栓限位盘3为一体成型部件，其内部开槽形成为两端开口的筒状结构。探测杆5中部的外壁以焊接方式与筒状壳体1的内壁固定连接，二者之间形成在高温高压流体环境下流体不泄露的密封结构。As shown in Figures 1-4, the engine compressor outlet temperature and pressure measuring device of the present invention includes a cylindrical shell 1 with openings at both ends, a sensor mounting seat 2 fixedly mounted on the lower end of the outer wall of the cylindrical shell 1, a bolt limit plate 3 fixedly mounted on the upper end of the outer wall of the cylindrical shell 1, a plurality of bolt fastening components 4, and a detection rod 5 fixedly mounted in the middle of the cylindrical shell. The cylindrical shell 1, the sensor mounting seat 2, and the bolt limit plate 3 are integrally formed components, and the internal grooves thereof form a cylindrical structure with openings at both ends. The outer wall of the middle part of the detection rod 5 is fixedly connected to the inner wall of the cylindrical shell 1 by welding, and a sealing structure is formed between the two to prevent fluid leakage in a high-temperature and high-pressure fluid environment.
传感器安装座2以与筒状壳体1的外壁之间在高温高压流体环境下流体不泄露的方式固定套设在筒状壳体1的外壁上；传感器安装座2与螺栓限位盘3上均设有若干螺栓安装孔，且传感器安装座2上的各螺栓安装孔在上下方向上一一对应；每一螺栓紧固组件均包括一螺栓和一与螺栓相配合的螺母，每一螺栓依次穿过螺栓限位盘3、传感器安装座2上对应的螺栓安装孔后其端部与发动机中压气机排气口处机匣壳体上的传感器固定座上的螺纹孔固定连接，各螺栓全部安装后，传感器安装座2被固定安装在压气机排气口处机匣壳体上的传感器固定座上；且每一螺栓在穿过螺栓限位盘3上对应的螺栓安装孔后，与之相配合的螺母即安装在螺栓上，在需要进行温度和压力测量装置的安装时，螺栓继续穿过传感器安装座2上对应的螺栓安装孔，之后其端部与发动机中压气机排气口处机匣壳体上的传感器固定座上的螺纹孔固定连接，螺母的安装方式用于防止螺栓在安装过程中脱落至发动机的热环境中。The sensor mounting seat 2 is fixedly sleeved on the outer wall of the cylindrical shell 1 in a way that the fluid does not leak between the sensor mounting seat 2 and the outer wall of the cylindrical shell 1 in a high-temperature and high-pressure fluid environment; a plurality of bolt mounting holes are provided on the sensor mounting seat 2 and the bolt limiting plate 3, and the bolt mounting holes on the sensor mounting seat 2 correspond one to one in the up and down directions; each bolt fastening assembly includes a bolt and a nut matching the bolt, and each bolt passes through the corresponding bolt mounting holes on the bolt limiting plate 3 and the sensor mounting seat 2 in turn, and its end is fixedly connected with the threaded hole on the sensor fixing seat on the casing shell at the exhaust port of the compressor in the engine. Then, after all the bolts are installed, the sensor mounting base 2 is fixedly mounted on the sensor mounting base on the casing at the compressor exhaust port; and after each bolt passes through the corresponding bolt mounting hole on the bolt limit plate 3, the matching nut is installed on the bolt. When the temperature and pressure measuring device needs to be installed, the bolt continues to pass through the corresponding bolt mounting hole on the sensor mounting base 2, and then its end is fixedly connected with the threaded hole on the sensor mounting base on the casing at the compressor exhaust port in the engine. The installation method of the nut is used to prevent the bolt from falling off into the hot environment of the engine during the installation process.
探测杆5中部的外壁以与筒状壳体1的内壁之间在高温高压流体环境下流体不泄露的方式固定穿设在筒状壳体1的内壁上；探测杆5为一顶端开口而底端封闭的空心杆状体，探测杆5位于所述筒状壳体1上方的杆体部分，其顶部进一步设置有用以固定信号传输电缆53和总压引气管52的支架6。探测杆5位于筒状壳体1下方的杆体表面上设有若干沿高度方向分布的管状探测头51，每一管状探测头51均沿水平方向延伸，且其头部开口、尾部与探测杆5的中空腔体连通。The outer wall of the middle part of the detection rod 5 is fixedly penetrated on the inner wall of the cylindrical shell 1 in a way that the fluid does not leak between the inner wall of the cylindrical shell 1 under a high temperature and high pressure fluid environment; the detection rod 5 is a hollow rod-shaped body with an open top and a closed bottom. The detection rod 5 is located at the rod body part above the cylindrical shell 1, and a bracket 6 for fixing the signal transmission cable 53 and the total pressure bleed pipe 52 is further provided on the top. The rod body surface of the detection rod 5 located below the cylindrical shell 1 is provided with a plurality of tubular detection heads 51 distributed in the height direction, and each tubular detection head 51 extends in the horizontal direction, and its head is open and its tail is connected to the hollow cavity of the detection rod 5.
探测杆5的中空腔体内设有若干总压引气管52和若干感温元件，其中，每一总压引气管52均对应一管状探测头51，且每一总压引气管52和与其对应的管状探测头51的尾部之间以流体不泄露的方式相互连接，对应的管状探测头51形成为总压受感部；每一感温元件均包括一温度受感部54和与温度受感部相连接的信号传输电缆53，每一温度受感部54均对应固定设置在一管状探测头51内，其信号传输电缆53的主体部分布置在探测杆5的中空腔体内，温度受感部54用于探测进入管状探测头51内的高温流体的温度，其信号传输电缆53用以将温度信号传输至外部的温度测量设备上。A plurality of total pressure air ducts 52 and a plurality of temperature sensing elements are provided in the hollow cavity of the detection rod 5, wherein each total pressure air duct 52 corresponds to a tubular detection head 51, and each total pressure air duct 52 and the tail of the corresponding tubular detection head 51 are connected to each other in a fluid-tight manner, and the corresponding tubular detection head 51 forms a total pressure sensing part; each temperature sensing element includes a temperature sensing part 54 and a signal transmission cable 53 connected to the temperature sensing part, and each temperature sensing part 54 is fixedly arranged in a corresponding tubular detection head 51, and the main part of the signal transmission cable 53 is arranged in the hollow cavity of the detection rod 5, and the temperature sensing part 54 is used to detect the temperature of the high-temperature fluid entering the tubular detection head 51, and the signal transmission cable 53 is used to transmit the temperature signal to an external temperature measuring device.
在探测杆5的中空腔体内，为获得良好绝缘性，各感温元件的信号传输电缆54与总压引气管53之间用高温绝缘材料填充。温度受感部54为铂电阻受感部，每一铂电阻受感部均包括两根信号传输电缆53，两根信号传输电缆53集束为一根线束固定在探测杆5的中空腔体内。温度受感部利用铂金属的电阻值随温度的变化而变化并近似成正比的特性。采用分度号为Pt100的铂电阻作为感温元件，当环境温度变化时，感温原件感受到温度变化而发生电阻值变化，通过检测铂电阻的电阻值，即可确定传感器感温元件所在环境的温度。正常条件下，用100DC兆欧表测量每根导线与壳体之间，以及每组铂电阻的2个导线之间的绝缘电阻不小于100MΩ。In the hollow cavity of the detection rod 5, in order to obtain good insulation, the signal transmission cable 54 of each temperature sensing element and the total pressure air duct 53 are filled with high-temperature insulating materials. The temperature sensing part 54 is a platinum resistor sensing part, and each platinum resistor sensing part includes two signal transmission cables 53. The two signal transmission cables 53 are bundled into a harness and fixed in the hollow cavity of the detection rod 5. The temperature sensing part uses the characteristic that the resistance value of platinum metal changes with the change of temperature and is approximately proportional. A platinum resistor with a graduation number of Pt100 is used as a temperature sensing element. When the ambient temperature changes, the temperature sensing element senses the temperature change and the resistance value changes. By detecting the resistance value of the platinum resistor, the temperature of the environment where the sensor temperature sensing element is located can be determined. Under normal conditions, the insulation resistance between each wire and the shell, and between the two wires of each group of platinum resistors measured with a 100DC megohmmeter is not less than 100MΩ.
本发明的发动机中压气机出口温度和压力测量装置在使用时，发动机录取性能阶段，发动机正常开车运转，在录取性能前一个低工况状态，用工具拧下固定在发动机压气机机匣壳体的传感器固定座处堵头上的螺钉，拆下堵头，将本发明的发动机中压气机出口温度和压力测量装置的探测杆伸入发动机压气机流通通道内，受感部位迎向进气方向，传感器底座与机匣壁面上的传感器固定座接合，调好位置后，再用工具通过拧紧压气机出口螺栓限位盘上的螺钉紧固在发动机传感器固定座上，配套电缆接到发动机试车台对应的数据采集系统上。总压受感部引气管，对应连接到试车的压力传感器上。提高发动机转速，录取发动机各工况点性能。录取性能结束后，降低发动机到最低工况，按上述相反工作，用工具拆下本发明的温度和压力测量装置，回装发动机传感器固定座上的堵头，之后可以完成后续试车内容。When the temperature and pressure measuring device for the outlet of the compressor of the engine of the present invention is used, the engine is in the performance recording stage, the engine is running normally, and in a low working condition before the performance recording, the screws on the plug fixed on the sensor fixing seat of the engine compressor casing housing are unscrewed with a tool, the plug is removed, and the detection rod of the temperature and pressure measuring device for the outlet of the compressor of the engine of the present invention is extended into the flow channel of the engine compressor, the sensing part faces the air intake direction, the sensor base is engaged with the sensor fixing seat on the casing wall, and after the position is adjusted, the tool is used to tighten the screws on the compressor outlet bolt limit plate to fasten it to the engine sensor fixing seat, and the matching cable is connected to the corresponding data acquisition system of the engine test bench. The air duct of the total pressure sensing part is connected to the pressure sensor of the test run. The engine speed is increased to record the performance of each operating point of the engine. After the performance recording is completed, the engine is reduced to the lowest working condition, and the above reverse work is performed. The temperature and pressure measuring device of the present invention is removed with a tool, and the plug on the engine sensor fixing seat is reinstalled, and the subsequent test run content can be completed.
通过上述实施例，完全有效地实现了本发明的目的。凡依本发明专利构思所述的构造、特征及原理所做的等效或简单变化，均包括于本发明专利的保护范围内。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离本发明的结构或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。Through the above embodiments, the purpose of the present invention is fully and effectively achieved. Any equivalent or simple changes made according to the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. The technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all belong to the protection scope of the present invention.
本发明未详细阐述部分属于本领域技术人员的公知技术。The present invention does not elaborate on some of the well-known technologies that belong to those skilled in the art.
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