A Steady-state Pressure Probe Using Strut Suction to Reduce Strut Clogging Effect
A plugging effect and strut technology, applied in the direction of measuring fluid pressure, instruments, measuring devices, etc., can solve the problems of strut wake clogging effect, disturbing the flow characteristics of the measured flow field, and affecting the measurement of downstream flow field parameters, etc., to achieve reduction Small blocking effect, weakening effect of interference
Active Publication Date: 2019-11-12
BEIHANG UNIV
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Problems solved by technology
[0004] The technical problem mainly solved by the present invention is: when measuring flow field parameters such as airflow direction, total pressure, static pressure, and velocity of the impeller by using the plug-in steady-state pressure probe, the wake of the strut will produce a blocking effect, which will interfere with the measured flow field. Flow characteristics, affecting the measurement of downstream flow field parameters
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Embodiment
[0024] Such as figure 1 As shown, in this embodiment, a steady-state pressure probe using air suction to reduce the blockage effect of the pole is introduced, which is characterized in that it includes a probe head (1), a pole (2), an air suction pipe (5), nozzle (6); the probe head (1) is welded to the support rod (2); the probe head (1) is connected to the pressure induction pipe (3), and the pressure induction pipe (3) Encapsulated inside the pole (2), connected with the joint (6) welded on the pole (2); the joint (6) is a cylindrical structure, welded with the pole (2); the pole (2) is a closed structure, facing the incoming flow, with two rows of round holes (4) on the shoulder, which communicate with the suction pipe (5); the suction pipe (5) is double, welded to the support rod (2) on the mouthpiece (6) connected.
[0025] In this example, the probe head (1) is a round platform with five holes; the support rod (1) is a round rod with a diameter of 6 mm; facing the inc...
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Abstract
The invention belongs to the technical field of flow field pressure testing, and discloses a steady state pressure probe for reducing the support rod plugging effect through air suction of a support rod. The steady state pressure probe is characterized by comprising a probe head, the support rod, an air suction pipe and receiving nozzles. The probe head is welded with the support rod and connectedwith a pressure lead pipe. The pressure lead pipe is packaged in the support rod and connected with the receiving nozzles welded on the support rod. The receiving nozzles have a cylindrical structureand are welded on the side surface or the top end of the support rod for sealing. The support rod has a closed structure and faces the coming flow, the shoulder part or the back part is provided withmultiple columns of circular holes, and the holes are connected or communicated with the air suction pipe. The air suction pipe is connected with the receiving nozzles welded on the support rod. Theplugging effect caused by the wake of the probe support rod can be reduced by controlling the air suction quantity of the support rod. Compared with the present probes, the interference of the inserting probe on the tested flow field can be reduced by the circular holes on the surface of the support rod.
Description
technical field [0001] The invention belongs to the technical field of flow field pressure testing, and relates to a measuring device for a steady state pressure of a flow field, in particular to a steady state pressure probe which utilizes air suction of a strut to reduce the clogging effect of a strut. Background technique [0002] At present, in the internal flow test, such as the measurement of flow field parameters such as the inlet and outlet of compressors, turbines, fans, fans, etc., the direction of airflow between stages, total pressure, static pressure, and velocity, plug-in steady-state pressure is often used. The probe captures the above performance parameters and flow field characteristics. [0003] Since these plug-in pressure probes need to be supported by struts, the struts will interfere with the measured flow field, resulting in flow mixing loss, flow blockage, and even affecting the normal operation of the test piece in severe cases. For example, when th...
Claims
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IPC IPC(8): G01L19/06
CPCG01L19/00G01L19/0092G01L19/06G01L2019/0053
Inventor 马宏伟钟亚飞
Owner BEIHANG UNIV