Temperature probe for reducing support rod plugging effect through air suction of support rod
A blockage effect, temperature probe technology, applied in the direction of temperature measurement of moving fluid, thermometer, application of thermometers, etc., can solve the problems of interfering with the flow characteristics of the measured flow field, blockage of the strut wake, and affecting the measurement of downstream flow field parameters, etc. , to achieve the effect of weakening the blocking effect, reducing the blocking effect, and weakening the interference
Active Publication Date: 2018-06-29
BEIHANG UNIV
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Problems solved by technology
[0004] The technical problem mainly solved by the present invention is: when using the plug-in temperature probe to measure the temperature of the flow field in the turbine, the wake of the strut will produce a blocking effect, which will interfere with the flow characteristics of the measured flow field and affect the measurement of downstream flow field parameters
Method used
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Embodiment
[0023] Such as figure 1 As shown, this embodiment introduces a temperature probe that utilizes the suction of the rod to reduce the blockage effect of the rod, which is characterized in that it includes the probe head (1), the rod (2), the suction pipe ( 5), the mouthpiece (6); the probe head (1) is welded to the pole (2), with a built-in temperature sensor; the cable (3) of the temperature sensor is packaged inside the pole (2), from The top of the pole (2) is drawn out and sealed tightly; the pole (2) is a closed structure, facing the incoming flow, and two rows of round holes (4) are opened on the shoulder, and the holes (4) and the suction pipe (5) connected; the suction pipe (5) is connected to the joint (6) welded on the pole (2); the joint (6) is a cylindrical structure, welded on the surface of the pole (2), and Sealing effect.
[0024] In this example, the cross section of the pole (1) is circular, with a diameter of 7mm; the diameter of the round holes (4) is 0.6mm...
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Abstract
The invention belongs to the technical field of flow field temperature testing, and discloses a temperature probe for reducing the support rod plugging effect through air suction of a support rod. Thetemperature 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 equipped with a built-in temperature sensor. The cable of the temperature sensor is packaged in the support rod and led out of the top end or the side surface of the support rod and closely packaged. The support rod has a closed structure and faces the coming flow, the shoulder part or the back part is provided with multiple 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. The receiving nozzles have a cylindrical structure and are welded on the surface of the support rod for sealing.The interference of the inserting probe on the tested flow field can be reduced by controlling the air suction quantity of the support rod. Compared with the present probes, the plugging effect causedby the wake of the probe support rod can be reduced by air suction of the circular holes on the surface of the support rod.
Description
technical field [0001] The invention belongs to the technical field of flow field temperature testing, and relates to a flow field temperature measuring device, in particular to a temperature 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 the inlet, outlet, and interstage airflow static temperature and total temperature of compressors, turbines, fans, fans, etc., plug-in temperature probes are often used to obtain the above performance parameters and flow field characteristics. . [0003] Since the temperature probe needs to be supported by a pole during measurement, the pole will interfere with the measured flow field to a certain extent, resulting in flow mixing loss, flow blockage, and even affecting the normal operation of the test piece in severe cases. For example, when the probe is inserted into the inlet of a small-sized compressor f...
Claims
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IPC IPC(8): G01K13/02G01K13/024
CPCG01K13/022G01K13/024
Inventor 马宏伟钟亚飞
Owner BEIHANG UNIV