Twin-screw compressor pressure testing mechanism
A technology for pressure testing and compressors, which is applied in the direction of machines/engines, mechanical equipment, pump control, etc. It can solve the problems of high technical requirements for operation, cumbersome and complicated pressure testing structure of twin-screw compressors, and the inability to guarantee the normal operation of rotor meshing, etc. , to achieve accurate measurement, avoid machine modification design, and avoid the effect of sensor placement problems
Inactive Publication Date: 2018-05-08
JIANGNAN UNIV
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Problems solved by technology
[0006] In order to solve the problems that the pressure test structure of the twin-screw compressor is cumbersome and complicated, the follow-up cannot guarantee the normal operation of the rotor engagement, and the operator has high technical requirements for the operation, the present invention provides a pressure test mechanism for the twin-screw compressor
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[0022] figure 1 Shown is the structural principle block diagram of the existing twin-screw compressor pressure testing mechanism, including the twin-screw compressor host, slip ring device, pressure sensor, signal amplifier, data acquisition card, etc. figure 2 Shown is the schematic diagram of the installation of the pressure sensor, which is installed at the bottom of the tooth groove near the exhaust end of the female rotor. The existing pressure test scheme requires secondary processing of the screw rotor, which requires high-precision machining of the rotor, which is easy to damage the integrity of the rotor tooth profile and reduce the operating strength of the rotor. The local maximum strength of the rotor after processing is reduced by 5%-10%. Moreover, the signal line and the power line need to be differentially connected through a special slip ring device, and the operation of the whole solution is difficult.
[0023] This embodiment discloses a twin-screw compres...
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The invention discloses a twin-screw compressor pressure testing mechanism and relates to the technical field of sensing testing. The twin-screw compressor pressure testing mechanism comprises a twin-screw compressor host, a pressure sensor, a pressure transmitter and a data acquisition card, wherein a circular hole is formed in the main case of the twin-screw compressor host; the pressure sensoris mounted in the circular hole and is arranged right above the axis of a female rotor or a male rotor close to the exhausting end face; the signal line and the power line of the pressure sensor are electrically connected with the pressure transmitter; an analog signal collected by the pressure sensor is subjected to signal amplification treatment by the pressure transmitter and is then transmitted to the data acquisition card; and then the data acquisition card converts the analog signal into a digital signal, and the digital signal is transmitted to a computer for data processing. The twin-screw compressor pressure testing mechanism can test the internal pressure during the running process of the compressor easily and rapidly, avoids the problem in the traditional method that the sensoris placed with complexity, carries out the minimized reformation design, is simple and convenient to execute and can precisely test the internal working pressure of the twin-screw compressor.
Description
Technical field: [0001] The invention relates to a pressure testing mechanism for a twin-screw compressor, which belongs to the technical field of sensor testing. Background technique: [0002] In scientific research and engineering practice, theoretical calculation and simulation as a research method can well predict and explore the performance parameters of the model, but the accuracy and reliability of theoretical calculation and simulation results need to be tested experimentally data to calibrate. [0003] The structure of the twin-screw compressor is complex, and it is difficult to test the pressure change during its working process. When it is working, there are multiple elementary volumes in the working chamber doing the same work cycle, and each elementary volume All go through the process of inhalation, compression, and exhaust. When performing a pressure test, it is necessary to select one of the primitive volumes for measurement. The volume of the element is ma...
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IPC IPC(8): F04C28/28
CPCF04C28/28F04C2270/18F04C2270/86
Inventor 何雪明施国江陈小飞黄海楠吴佳黄涛涛
Owner JIANGNAN UNIV
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