| 摘要 |
The invention has applications especially in expansion turbines used for gas cooling, in which gas-lubricated bearings are used. It serves to prevent losses in the gland (15) with simultaneous control of the gas excess pressure acting on the axial bearing load in the bearing part of the turbine housing. The essence of the invention lies in the fact that the device is formed by a control element, which comprises a capsule (1) in which there is an elastic or movable dividing wall (4) which divides the hollow space of the capsule (1) into two chambers (2, 3). A gas pipe (11), which emerges from the space (12), in which the gland (15) is located, opens into one of the chambers (3). The gas pipe (6), which is provided with a branch pipe (6a) with valve (7) opens into the other chamber (2) of the capsule (1). At the same time a gas excess pressure outlet pipe (5), which is closed and opened by means of the deflection or movement of the dividing wall (4), leads off from the chamber (2). If the pressure in the bearing part of the housing (10) is lower than or equal to the pressure in front of the gland (15), the dividing wall (4) closes the gas outlet pipe (5), and opens it when the pressure rises. <IMAGE>
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