Measuring device and method for local pressure loss of multi-directional special-shaped pipeline based on slm forming
A technology of local pressure and measurement method, which is applied in the direction of pressure difference measurement between multiple valves, measurement device, and measurement of fluid pressure. It can solve the problem of no local resistance of multi-directional special-shaped pipelines, and achieve the effect of improving accuracy.
Active Publication Date: 2021-08-27
YANSHAN UNIV
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Problems solved by technology
[0003] The main pressure loss of multi-directional special-shaped pipes depends on the local pressure loss, and changing the shape of special-shaped pipes will also affect the change of local pressure loss, so the measurement of local pressure loss can provide guidance for the design of multi-directional special-shaped pipes. An experimental method for exploring the local resistance of multi-directional special-shaped pipes, especially the mechanism of local pressure loss of multi-directional special-shaped pipes formed by SLM
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[0039] In order to detailed the technical content, structural features of the present invention, the integration of the specification will be described in detail below.
[0040] Partial pressure loss measuring device based on SLM-shaped multi-shaped pipelines, such as figure 1 As shown, including the aluminum alloy tube 1, the joint 2, the shaped conduit 3, the pressure measuring assembly 4, the O-type seal 6, the variable frequency motor 12, the hydraulic pump 13, the oil tank 21, the relief valve 14, the reverse valve 15, the throttle Valve 19, lower machine 20, and aluminum alloy tubular threads 5 and shaped pipe external threads 11 in combination with joint 2.
[0041] like figure 2 with 3As shown, the aluminum alloy tube 1 manufactured by the conventional processing process is formed as a fluid to form a stable turbulent development area, and both ends are respectively provided with a trapezoidal groove 7; the joint 2 is manufactured by conventional processing, the joint 2 en...
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Abstract
The invention provides a device and method for measuring local pressure loss of a multi-directional special-shaped pipeline based on SLM forming, which includes an aluminum alloy tube, a joint, a special-shaped pipeline, a pressure measurement component and an O-ring. The two ends of the aluminum alloy tube are respectively provided with trapezoidal grooves, and the O-ring is located inside the trapezoidal groove. The external thread of the special-shaped pipe at the first end of the pipe is fixed, and the outer surface of the special-shaped pipe is provided with a pressure measuring hole, and a mounting hole is provided directly above the pressure measuring hole. The pressure sensor is fixed through the internal thread of the mounting hole and the mounting hole. The aluminum alloy tube The inner diameter of the pipe is equal to the inner diameter of the special-shaped pipe. This measurement method measures the local pressure loss of the special-shaped pipeline through the pressure measurement component located in the special-shaped pipeline, and transmits the measured signal to the lower computer. The invention ensures that the fluid is in a turbulent state when it enters the multi-directional special-shaped pipeline formed by the SLM, and improves the accuracy of local pressure loss measurement.
Description
Technical field [0001] The present invention relates to the field of hydraulic transmission control, and more particularly to a partial pressure loss measuring apparatus and method of a multi-directional shaped pipe based on SLM. Background technique [0002] In the context of the growing materials, various metal 3D printing technologies are increasingly mature. Under the technique based on selective laser melting (SLM), it can realize the designs of conventional processing processes, which is complex pipe for hydraulic systems. And the formation, lightweight, reducing pressure loss of the hydraulic integrated block is very important. Multi-directional pipes, hydraulic integrated blocks, such as hydraulic integrated blocks, etc., and the existence of the right angle bend and process holes, which exist, the fluid flows through partial pressure loss of these places, and therefore uses SLM technology to design. Manufacturing multi-directional pipelines to reduce the problem of exces...
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IPC IPC(8): G01L13/00G01M10/00
CPCG01L13/00G01M10/00
Inventor 姚静张昊宋英哲张建启
Owner YANSHAN UNIV