CN107560790A - Pressure transducer vapour-pressure type field calibration device - Google Patents
Pressure transducer vapour-pressure type field calibration device Download PDFInfo
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Abstract
本发明属于航天发动机试验设备技术领域，具体涉及一种压强传感器气压式现场校准装置。该校准装置包括压力控制器，压力控制器入口处设置供气管路，压力控制器出口处设置用于连接待校准压强传感器的集气管；所述供气管路上由气源入口沿气体输送方向依次设置有过滤器、示值压力表和手动截止阀。本发明以氮气等清洁气体作为增压气源，相比于油压计和水压计等传统测试设备，可以有效控制多余物，显著提高了压强传感器现场校准效率，降低了劳动强度。
The invention belongs to the technical field of aerospace engine test equipment, and in particular relates to an air pressure field calibration device for a pressure sensor. The calibration device includes a pressure controller, a gas supply pipeline is arranged at the inlet of the pressure controller, and a gas collecting pipe for connecting the pressure sensor to be calibrated is arranged at the outlet of the pressure controller; on the gas supply pipeline, the inlet of the gas source is sequentially arranged along the direction of gas delivery There are filters, indicating pressure gauges and manual shut-off valves. The present invention uses clean gas such as nitrogen as a pressurized gas source, and compared with traditional testing equipment such as oil pressure gauges and water pressure gauges, it can effectively control redundant objects, significantly improve the on-site calibration efficiency of pressure sensors, and reduce labor intensity.
Description
技术领域technical field
本发明属于航天发动机试验设备技术领域，具体涉及一种压强传感器气压式现场校准装置。The invention belongs to the technical field of aerospace engine test equipment, and in particular relates to an air pressure field calibration device for a pressure sensor.
背景技术Background technique
在液体火箭发动机试验中，压力测量参数较多，且其测量的准确程度影响对发动性能的评估。压力参数测量是通过压强传感器将被测物理量转换为电信号，通过测量电缆远传回数据采集系统，在此过程中，电信号容易受到试验环境的影响，包括测量电缆的回路电阻、传感器供电电压的线路损耗以及信号转接环节等等。因此，为了保证压力参数测量的准确度，在每次液体火箭发动机试验之前，需要对包括压强传感器和数据采集系统在内的整个测量系统进行现场校准。In the liquid rocket engine test, there are many pressure measurement parameters, and the accuracy of the measurement affects the evaluation of the engine performance. The pressure parameter measurement is to convert the measured physical quantity into an electrical signal through the pressure sensor, and transmit it back to the data acquisition system through the measurement cable. During this process, the electrical signal is easily affected by the test environment, including the loop resistance of the measurement cable and the sensor supply voltage. Line loss and signal transfer link and so on. Therefore, in order to ensure the accuracy of pressure parameter measurement, the entire measurement system including the pressure sensor and data acquisition system needs to be calibrated on site before each liquid rocket engine test.
以往压强传感器的现场校准采用的是油压计的手动方式，操作复杂，传感器不易清洗，人为导致的误差大，校准效率低，油压存在易燃和污染的严重缺点，安全性较差。水压计相比于油压计方式，避免了易燃和污染的缺点，具有环保安全的优点，但是水压方式往往密封性不好且容易锈蚀，产生多余物。In the past, the on-site calibration of the pressure sensor used the manual method of the oil pressure gauge. The operation is complicated, the sensor is not easy to clean, the error caused by human is large, the calibration efficiency is low, the oil pressure has serious shortcomings of flammability and pollution, and the safety is poor. Compared with the oil pressure gauge, the water pressure gauge avoids the disadvantages of flammability and pollution, and has the advantages of environmental protection and safety. However, the water pressure gauge is often not well sealed and easy to rust, resulting in redundant waste.
发明内容Contents of the invention
为了解决现有技术中存在的上述技术问题，本发明提供一种压强传感器气压式现场校准装置。In order to solve the above-mentioned technical problems existing in the prior art, the present invention provides a pneumatic field calibration device for a pressure sensor.
本发明的技术解决方案是：一种压强传感器气压式现场校准装置，其特殊之处在于：包括压力控制器，压力控制器入口处设置供气管路，压力控制器出口处设置用于连接待校准压强传感器的集气管；所述供气管路上由气源入口沿气体输送方向依次设置有过滤器、示值压力表和手动截止阀。The technical solution of the present invention is: a pressure sensor pneumatic on-site calibration device, which is special in that it includes a pressure controller, an air supply pipeline is arranged at the inlet of the pressure controller, and a gas supply pipeline is arranged at the outlet of the pressure controller for connecting The gas collecting pipe of the pressure sensor; on the gas supply pipeline, a filter, an indication pressure gauge and a manual shut-off valve are sequentially arranged along the gas delivery direction from the gas source inlet.
进一步地，上述过滤器与气源入口之间设置有安全阀；所述过滤器与示值压力表之间设置有减压阀。Further, a safety valve is provided between the above-mentioned filter and the gas source inlet; a pressure reducing valve is provided between the filter and the indicating pressure gauge.
进一步地，上述压力控制器上还设置有消音器。Further, the pressure controller is also provided with a muffler.
进一步地，上述压力控制器为PACE6000双通道压力控制器，PACE6000双通道压力控制器的两个压力控制单元分别连接两个校准量程不同的供气管路和两个集气管。Further, the above-mentioned pressure controller is a PACE6000 dual-channel pressure controller, and the two pressure control units of the PACE6000 dual-channel pressure controller are respectively connected to two gas supply lines with different calibration ranges and two gas collectors.
进一步地，上述过滤器为5μm精度过滤器。Further, the above-mentioned filter is a filter with a precision of 5 μm.
进一步地，上述供气管路的通径为DN6-4。Further, the diameter of the above gas supply pipeline is DN6-4.
进一步地，上述压力控制器出口通过出口管路与集气管相连，所述出口管路的规格为φ10×2，出口管路的材质为0Cr18Ni9。Further, the outlet of the above-mentioned pressure controller is connected to the gas collecting pipe through an outlet pipeline, the specification of the outlet pipeline is φ10×2, and the material of the outlet pipeline is 0Cr18Ni9.
进一步地，上述集气管管路规格为φ21×3.5，集气管管路材质为0Cr18Ni9。Further, the specification of the above-mentioned air collecting pipe is φ21×3.5, and the material of the air collecting pipe is 0Cr18Ni9.
进一步地，上述集气管通过分支管路设置多个传感器安装接口。Further, the gas collecting pipe is provided with a plurality of sensor installation interfaces through branch pipelines.
进一步地，上述分支管路的管路规格为φ8×2，分支管路的材质为0Cr18Ni9。Further, the pipeline specification of the branch pipeline is φ8×2, and the material of the branch pipeline is 0Cr18Ni9.
本发明的有益效果在于：本发明以氮气等清洁气体作为增压气源，相比于油压计和水压计等传统测试设备，可以有效控制多余物，显著提高了压强传感器现场校准效率，降低了劳动强度。The beneficial effect of the present invention is that: the present invention uses clean gas such as nitrogen as the pressurized gas source, compared with traditional test equipment such as oil pressure gauge and water pressure gauge, it can effectively control the excess, and significantly improve the on-site calibration efficiency of the pressure sensor. Reduced labor intensity.
附图说明Description of drawings
图1为本发明压强传感器气压式现场校准装置原理示意图。Fig. 1 is a schematic diagram of the principle of the pneumatic field calibration device for the pressure sensor of the present invention.
图2为本发明压强传感器气压式现场校准装置较佳实施例前视图。Fig. 2 is a front view of a preferred embodiment of the pneumatic on-site calibration device for the pressure sensor of the present invention.
图3为本发明压强传感器气压式现场校准装置较佳实施例侧视图。Fig. 3 is a side view of a preferred embodiment of the pneumatic field calibration device for the pressure sensor of the present invention.
图4为本发明压强传感器气压式现场校准装置较佳实施例俯视图。Fig. 4 is a top view of a preferred embodiment of the pneumatic field calibration device for the pressure sensor of the present invention.
图5为本发明压强传感器气压式现场校准装置较佳实施例内部结构图。Fig. 5 is a diagram of the internal structure of a preferred embodiment of the pneumatic field calibration device for the pressure sensor of the present invention.
其中，附图标记如下：1-安全阀，2-过滤器，3-减压阀，4-示值压力表，5-手动截止阀，6-压力控制器，7-消音器，8-集气管，9-气源入口a，10-气源入口b，11-放气口。Among them, the reference signs are as follows: 1-safety valve, 2-filter, 3-pressure reducing valve, 4-indicating pressure gauge, 5-manual stop valve, 6-pressure controller, 7-muffler, 8-set Trachea, 9-air source inlet a, 10-air source inlet b, 11-air release port.
具体实施方式detailed description
参见图1至图5，本发明提供了一种压强传感器气压式现场校准装置，其较佳实施例结构主要包括压力控制器6，压力控制器6入口处设置供气管路，压力控制器6出口处设置用于连接待校准压强传感器的集气管8；供气管路上由气源入口沿气体输送方向依次设置有过滤器2、示值压力表4和手动截止阀5。过滤器2与气源入口之间设置有安全阀1，过滤器2与示值压力表4之间设置有减压阀3。Referring to Fig. 1 to Fig. 5, the present invention provides a pressure sensor pneumatic field calibration device, the structure of its preferred embodiment mainly includes a pressure controller 6, the inlet of the pressure controller 6 is provided with a gas supply pipeline, and the outlet of the pressure controller 6 is Set the gas collecting pipe 8 for connecting the pressure sensor to be calibrated; on the gas supply pipeline, a filter 2, an indicating pressure gauge 4 and a manual shut-off valve 5 are arranged in sequence along the direction of gas delivery from the gas source inlet. A safety valve 1 is set between the filter 2 and the air source inlet, and a pressure reducing valve 3 is set between the filter 2 and the indicating pressure gauge 4 .
压力控制器6上还设置有消音器7。The pressure controller 6 is also provided with a muffler 7 .
压力控制器6为PACE6000双通道压力控制器，PACE6000双通道压力控制器的两个压力控制单元分别连接两个校准量程不同的供气管路和两个集气管。过滤器2为5μm精度过滤器。供气管路的通径为DN6-4。The pressure controller 6 is a PACE6000 dual-channel pressure controller, and the two pressure control units of the PACE6000 dual-channel pressure controller are respectively connected to two gas supply lines with different calibration ranges and two gas collectors. Filter 2 is a 5 μm precision filter. The diameter of the air supply pipeline is DN6-4.
压力控制器出口通过出口管路与集气管相连，出口管路的规格为φ10×2，出口管路的材质为0Cr18Ni9。The outlet of the pressure controller is connected to the gas collecting pipe through the outlet pipeline, the specification of the outlet pipeline is φ10×2, and the material of the outlet pipeline is 0Cr18Ni9.
集气管管路规格为φ21×3.5，集气管管路材质为0Cr18Ni9。The specification of the gas collecting pipe is φ21×3.5, and the material of the gas collecting pipe is 0Cr18Ni9.
集气管通过分支管路设置多个传感器安装接口。分支管路的管路规格为φ8×2，分支管路的材质为0Cr18Ni9。传感器安装接口为60°球头，通过外套螺母固定待校准的压强传感器。The air collecting pipe is provided with multiple sensor installation interfaces through branch pipelines. The pipeline specification of the branch pipeline is φ8×2, and the material of the branch pipeline is 0Cr18Ni9. The sensor installation interface is a 60° ball head, and the pressure sensor to be calibrated is fixed by the outer nut.
在对压强传感器进行校准时，首先拆掉传感器安装接口处的堵头，通过外套螺母将压强传感器固定在传感器安装接口处，并用扳手拧紧，防止漏气。然后连接氮气供应管路，小于7MPa校准量程连接氮气气源入口a，大于7MPa校准量程小于21MPa校准量程连接氮气气源入口b。最后操作压力控制器按照压强传感器校准档位增泄压。校准完毕后，拆掉压强传感器，并用堵头将传感器安装接口封堵。When calibrating the pressure sensor, first remove the plug at the sensor installation interface, fix the pressure sensor at the sensor installation interface through the outer nut, and tighten it with a wrench to prevent air leakage. Then connect the nitrogen supply pipeline, the calibration range less than 7MPa connects the nitrogen gas source inlet a, the calibration range greater than 7MPa and the calibration range less than 21MPa connects the nitrogen gas source inlet b. Finally, operate the pressure controller to increase and release pressure according to the calibration gear of the pressure sensor. After calibration, remove the pressure sensor and seal the sensor installation interface with a plug.
Claims (10)
- A kind of 1. pressure transducer vapour-pressure type field calibration device, it is characterised in that：Including pressure controller, pressure controller enters Supply air line is set at mouthful, and pressure controller exit is provided for connecting the discharge of pressure transducer to be calibrated；The confession On air pipe filter, indicating value pressure gauge and hand stop valve are disposed with by air source inlet along gas conveying direction.
- 2. pressure transducer vapour-pressure type field calibration device according to claim 1, it is characterised in that：The filter with Safety valve is provided between air source inlet；Pressure-reducing valve is provided between the filter and indicating value pressure gauge.
- 3. pressure transducer vapour-pressure type field calibration device according to claim 2, it is characterised in that：The Stress control Muffler is additionally provided with device.
- 4. according to any described pressure transducer vapour-pressure type field calibration device in claim 1-3, it is characterised in that：It is described Pressure controller is PACE6000 binary channels pressure controllers, two Stress control lists of PACE6000 binary channels pressure controllers Member connects two calibration ranges different supply air lines and two discharges respectively.
- 5. pressure transducer vapour-pressure type field calibration device according to claim 4, it is characterised in that：The filter is 5 μm of precision filters.
- 6. pressure transducer vapour-pressure type field calibration device according to claim 4, it is characterised in that：The supply air line Latus rectum be DN6-4.
- 7. pressure transducer vapour-pressure type field calibration device according to claim 4, it is characterised in that：The Stress control Device outlet is connected by export pipeline with discharge, and the specification of the export pipeline is φ 10 × 2, and the material of export pipeline is 0Cr18Ni9。
- 8. pressure transducer vapour-pressure type field calibration device according to claim 4, it is characterised in that：The discharge pipe Road specification is φ 21 × 3.5, and discharge pipeline material is 0Cr18Ni9.
- 9. pressure transducer vapour-pressure type field calibration device according to claim 8, it is characterised in that：The discharge leads to Cross branch line and multiple sensor mounting interfaces are set.
- 10. pressure transducer vapour-pressure type field calibration device according to claim 9, it is characterised in that：The branched pipe The pipeline specification on road is φ 8 × 2, and the material of branch line is 0Cr18Ni9.
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Cited By (2)
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| CN112113703A (en) * | 2020-09-08 | 2020-12-22 | 安徽江淮汽车集团股份有限公司 | Engine pressure sensor testing device |
| CN112556925A (en) * | 2020-12-03 | 2021-03-26 | 西安近代化学研究所 | Performance testing device and method for pressure sensor for gunpowder vacuum stability test |
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