SU885572A1 - Device for detecting unpermissible displacement of turbomachine rotor relative to stator - Google Patents

Description

(5) DEVICE FOR DETECTION INADMISSIBLE

OF THE MOVEMENTS OF THE ROTOR

I

The invention relates to turbomachinery and can be used in turbines and centrifugal compressors.

The closest in technical essence to the present invention is a device for detecting unacceptable movements of the rotor of a turbomachine, comprising a contact sensor installed in the stator of the turbomachine, and a recording device l.

The disadvantage of this device is the need to supply electrical or other energy, such as mechanical energy.

In addition, in the event of a power failure, which often occurs under conditions of autonomous functioning of pipe machines, for example, at compressor stations for pumping natural gas, the known system does not protect the turbomachine or requires the installation of a cumbersome backup power source.

In addition, the use of electrical power to protect machines that reduce explosive atmospheres causes serious difficulties due to fire considerations. robustness, thereby reducing the operational reliability of the device.

The aim of the invention is to simplify the design of the device.

ten

The goal is achieved by the fact that the contact sensor is made in the form of an ampoule made of a material that is destructive upon contact with the rotor

15 is connected to the recording device.

The drawing shows the structure of the device.

Claims (2)

A housing 2 is attached to the stator 1. A nip20 pel 3 with a gasket A is pressed against the sensor 5 with a spacer nut 6, positioned | enclosed in the housing 2. The flange 7 is attached to the stator 1. The tube 8, connected to the nipple 3, connects the recording device 9 (in this case, the pressure gauge) to the internal cavity 10 of the sensor 5. The rubber ring 11 is installed on the housing 2 and together with the gasket 4 prevents the working environment into the environment. Sensor 5 is in contact with the rotor 12. The device operates as follows. Sensors 5 are installed in the stator part of the turbomachine in one or several probable places where rotor 12 is caught in the stator 1 with the minimum allowable clearance relative to the rotor. When operating a turbomachine in some cases (thermal warping, poor centering, rotor imbalance, axial shift, etc., the rotor may touch the stator, i.e. the contact of moving and stationary parts of the flow part of the turbomachine. When the displacement the rotor will exceed the gap, the sensor 5 will be destroyed, and the working medium under the effect of the pressure differential will affect the recording device 9, which will fix the poor performance of the turbomachine. This includes the working environment of the turbomachine. Moreover, it improves the reliability of the protection of machines compressing explosive mixtures, where, due to fire safety considerations, the use of power sources is undesirable. a rotor of the turbomachine relative to the stator, comprising a contact sensor mounted in the stator of the turbomachine and a recording device, characterized in that, in order to simplify the console The contact sensor is made in the form of an ampoule made of a material destroying the contact with the rotor, the internal cavity of which is connected to the recording device. Sources of information taken into account during the examination 1. USSR Author's Certificate No., cl. F 01 D 21/06, 1971.