A throttle device and its test platform

Abstract

The invention discloses a throttle device and a test platform having the same. The throttle device includes: a valve body (1), which is arranged in a pipe, and the inside is hollow, and the gas in the pipe can pass through the hollow inside of the valve body (1); a valve core (2), which is at least partially arranged Inside the valve body (1), the valve core (2) is provided with a gas channel (21) on the part inside the valve body (1); the transmission assembly (3), which is connected with the valve core (2 ) partly connected outside the valve body (1); wherein, the transmission assembly (3) is used to transmit rotational force for the valve core (2), so that the valve core (2) is relatively (1) Rotate, thereby changing the position of the gas channel (21) relative to the valve body (1). The throttle device in the invention has the advantages of high exhaust pressure, small leakage, small high-temperature deformation and no stagnation, good adjustment characteristics and high reliability.

Description

technical field [0001] The invention relates to the technical field of pipeline throttling, in particular to a throttle device and a test platform having the same. Background technique [0002] The vane compressor (hereinafter referred to as the vane machine) test bench is mainly used to obtain the aerodynamic performance of the vane machine. At the exhaust outlet of the vane machine, through the opening and closing action of the throttle valve, the flow channel area of ​​the compressed air is changed, and the working state of the vane machine at a certain speed within the working range is adjusted. [0003] In order to reflect the real-time working status of the vane machine, the throttle valve at the exhaust outlet end is required to be as close as possible to the outlet of the vane machine, and the outlet channel of the vane machine is an annular channel centered on the rotation axis of the vane machine, so the throttle valve here is usually annular. structure. Common s...

AI Technical Summary

Problems solved by technology

Since the gap between the fixed disc and the rotating disc is small, the adjustment is easy, so this form of throttle valve has good sealing performance. However, under high-pressure working conditions, the moving disc is large in size; it is subjected to large pneumatic pressure; and it is also hot when working at high temperature. Large deformation; easy to get stuck or even stuck; can't work normally

It is very dangerous to get stuck when the vane engine surges and the throttle needs to be opened quickly

Images