Safety device for stop valve of turbine pump

Abstract

The invention provides a safety device for a stop valve of a turbine pump. The safety device comprises a travel switch, a contact block and a stop valve driving device, wherein the travel switch is interlocked with a control circuit of the turbine pump; only when the travel switch is turned on, can the control circuit make a motor drive the turbine pump to rotate; the contact block is arranged at the top end of a valve rod of the stop valve, a contact of the tail end of the travel switch is matched with the contact block, and when the contact of the tail end of the travel switch is in contact with the contact block, the travel switch is turned on; the stop valve driving device is connected with the contact block and drives the contact block to move upwards or downward, and the contact block is made to make contact with or be separated from the contact of the tail end of the travel switch. By introducing the travel switch interlocked with the control circuit of the turbine pump, the effect that the turbine pump can start operating and supply oil only when the stop valve is opened is guaranteed, and idling of the turbine pump is effectively prevented.

Description

technical field [0001] The invention relates to a safety protection technology of a hydraulic circuit of a turbo pump, in particular to a safety device for a shut-off valve of a turbo pump. Background technique [0002] A turbo pump is a dynamic pump that generates a higher pressure by driving the pump with a turbine. The turbo pump generally adopts the direct connection mode, and the turbo driving agent is generally high-pressure gas. After the high-pressure gas accumulates, if the turbine shut-off valve is not opened in time, it will easily cause the turbine to be unloaded, which will cause the gas to expand and damage the turbo pump, and even cause a safety accident. [0003] The turbo pump is a high-speed rotating component in aerospace instruments. The high-temperature and high-pressure gas enters the turbine, and the low-temperature propellant is boosted by the pump. The pressure in the turbo pump is very high, so the safety performance of the turbo pump is very impor...

AI Technical Summary

Problems solved by technology

[0004] In the turbo pump design of the prior art, the safety performance of the turbo pump is even ignored, and the linkage between the shut-off valve and the turbo pump is not realized, and only the staff manually operates the shut-off valve, so when the staff neglects to open the shut-off valve , safety accidents are very likely to occur, and safety cannot be guaranteed. There have been many safety accidents about turbo pumps in the past

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