An orifice type back pressure regulating device

Abstract

The invention relates to a perforated plate type backpressure adjustment device. The perforated plate type backpressure adjustment device comprises a pore plate and a block plate installed together in matching mode, wherein the pore plate is connected with a turbine or gas compressor testbed expansion segment and a turbine or gas compressor testbed gas exhaust pipeline through bolts and flange holes formed in the circumferential direction of the pore plate. The pore plate cannot be rotated, and the block plate is located in the pore plate, and can be rotated. Exhaust ports are formed in both the pore plate and the block plate, and by rotating the block plate, an area opening angle is adjusted, exhaust amount of the perforated plate type backpressure adjustment device is controlled, and then an adjustment for outlet backpressure of a test piece of a turbine or gas compressor testbed is achieved. The perforated plate type backpressure adjustment device can be used for the outlet backpressure adjustment of the test piece of the turbine or gas compressor testbed, and can enable the outlet backpressure of the test piece to rapidly and accurately reach a numerical value needed in a test during the test process by adjusting the area opening angle.

Description

technical field [0001] The invention relates to an orifice plate type back pressure regulating device, which can be used for adjusting the outlet back pressure of a test piece of a turbine or compressor test bench. By adjusting the area opening of the device, the accurate and rapid adjustment of the outlet back pressure of the test piece can be realized. . Background technique [0002] The back pressure regulating device is widely used on test benches such as compressors or turbines to adjust the outlet back pressure of the test piece, and then realize the purpose of performance testing of the test piece under different outlet back pressure conditions. In the past, the back pressure adjustment device used the tail cone back pressure adjustment method to adjust the outlet back pressure of the test piece. The motor drives the tail cone to move axially, thereby controlling the opening of the baffle. Due to the need for the tail cone to travel in the axial direction, the axial...

AI Technical Summary

Problems solved by technology

For the test bench of compressor or turbine, due to the limited volume of experimental gas stored in the gas storage tank of the test bench, when the gas in the gas storage tank completely flows into the test section, the outlet pressure required for the test has not yet been reached in the cavity , causing the experiment to fail

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