An aircraft conduit flow distribution detection device

Abstract

The utility model provides an aviation pipeline flow distribution detection device, including L type total pressure probe and fixed clamp, the opening of horizontal section of total pressure probe is the entrance for fluid to enter, the horizontal section extends along the axial direction parallel to the pipeline, and the entrance is opposite to the fluid flow direction of the pipeline, the vertical section of total pressure probe has two mutually perpendicular openings, is static pressure interface and total pressure interface respectively, the central axis of static pressure interface is parallel with the central axis of horizontal section, and the central axis of total pressure interface coincides with the central axis of vertical section, can obtain the static pressure and total pressure of the fluid of pipeline simultaneously, relative to prior art only rely on single parameter, improve the accuracy of detection result, vertical section extends to the pipeline in through fixed clamp part, static pressure interface and total pressure interface are connected to corresponding pressure sensor through pressure pipe respectively, and fixed clamp is used for fixing the relative position of total pressure probe and the pipeline, improves the accuracy and stability of measurement data.

Claims

1. An aviation pipeline flow distribution detection device, characterized in that, The device includes an L-shaped total pressure probe and a fixing clamp. The horizontal section of the total pressure probe has an opening for fluid entry, and the horizontal section extends axially parallel to the pipeline. The inlet is positioned opposite to the fluid flow direction in the pipeline. The vertical section of the total pressure probe has two mutually perpendicular openings: a static pressure interface and a total pressure interface. The central axis of the static pressure interface is parallel to the central axis of the horizontal section, and the central axis of the total pressure interface coincides with the central axis of the vertical section. The vertical section extends into the pipeline through the fixing clamp. The static pressure interface and the total pressure interface are respectively connected to corresponding pressure sensors via pressure-sensing pipes. The fixing clamp is used to fix the relative position of the total pressure probe and the pipeline.

2. The aviation pipeline flow distribution detection device according to claim 1, characterized in that, The opening end of the inlet is a gradually expanding section whose inner diameter gradually increases along the direction of fluid flow.

3. The aviation pipeline flow distribution detection device according to claim 2, characterized in that, The central axis of the horizontal section is located above the central axis of the pipeline, and the vertical distance from the central axis of the pipeline is 1 / 3 of the pipeline radius. The vertical distance between the central axis of the horizontal section and the inner top wall of the pipeline is 2 / 3 of the pipeline radius.

4. The aviation pipeline flow distribution detection device according to claim 1, characterized in that, The outer wall of the static pressure interface is provided with a static pressure positioning groove and a static pressure anti-detachment component in sequence along the fluid flow direction. The static pressure tapping tube is sleeved on the static pressure interface, and fasteners press the static pressure tapping tube into the static pressure positioning groove. The outer wall of the total pressure interface is provided with a total pressure positioning groove and a total pressure anti-detachment component in sequence along the fluid flow direction. The total pressure tapping tube is sleeved on the total pressure interface, and fasteners press the total pressure tapping tube into the total pressure positioning groove.

5. The aviation pipeline flow distribution detection device according to claim 4, characterized in that, The static pressure anti-detachment component and the total pressure anti-detachment component have the same structure, including multiple anti-detachment frustum structures arranged sequentially along the fluid flow direction, and the outer diameter of the anti-detachment frustum structure gradually decreases along the fluid flow direction.

6. The aviation pipeline flow distribution detection device according to claim 1, characterized in that, The fixing clamp includes a first clamp and a second clamp with an arc-shaped structure. The two first flanges of the first clamp and the two second flanges of the second clamp are connected by bolts to connect the fixing clamp to the pipeline. The first clamp has a first through hole for the vertical section to pass through. A positioning element is welded above the first clamp. The positioning element has a second through hole that matches the first through hole. The connection between the vertical section and the positioning element and the first clamp is filled with a two-component acrylic adhesive.

7. The aviation pipeline flow distribution detection device according to claim 6, characterized in that, Both the first clamp and the second clamp have limiting grooves on their inner walls to accommodate the sealing gasket.

8. The aviation pipeline flow distribution detection device according to claim 7, characterized in that, The bolted connection includes a bolt and a nut. The nut is welded to the first flange and is concentrically arranged with the first bolt hole of the first flange. A buffer block is provided between the head of the bolt and the second flange, and the buffer block is sleeved on the shank of the bolt.

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