RU159517U1 - TURBO MACHINE SUPPORT COOLING SYSTEM - Google Patents

Abstract

The cooling system of the support of a turbomachine, including the main and additional channels for supplying coolant to the support, equipped with shut-off valves, characterized in that the main and additional channels are in communication with the support through a common supply line equipped with a sensor for measuring the pressure of the coolant located in front of the support, while the system the cooling system includes a redundant coolant device, including a compressor, a reservoir, a solenoid valve and a backup channel, while the accumulator ene general manifold through the electromagnetic valve redundant channel.

Description

The utility model relates to the field of compressor engineering, in particular to cooling systems of the supports of a turbomachine.

A known cooling system of the support of a turbomachine, which contains a channel for supplying coolant to the support, in communication with a source of coolant (patent US 6464469, IPC F04D 17/12, publ. 15.10.2002).

The disadvantage of this design is that in case of failure of the coolant supply channel, the support cooling system will not be able to work further.

Also known is a cooling system of the support of a turbomachine, which contains the main and additional channels for supplying coolant to the support. Each of the channels is equipped with a shut-off valve (patent RU 2532080, IPC F04D 29/58, published on October 27, 2014).

Due to the requirements of continuous cooling of magnetic bearings and to guarantee trouble-free operation of the cooling system as a whole, an additional channel for supplying the cooler to the support is made in it. When the main channel fails, the coolant begins to flow to the support through the additional channel, however, the required amount of coolant in the channels appears with a certain delay, since it needs to fill the internal space in the channels with the devices and control and measuring equipment located in them. In addition, the lack of coolant in the supply channels can occur due to pressure drops in non-stationary operating modes. This leads to the fact that the magnetic support remains for some time without the necessary cooling, which reduces the reliability of the system and reduces the working life of the turbomachine as a whole.

The technical result, which is directed to a utility model, is to ensure uninterrupted supply of the support of the turbomachine with the necessary amount of coolant, which will increase the reliability of the system.

The technical result is achieved in that the cooling system of the support of the turbomachine comprises a main supply channel and an additional channel for supplying cooling substance to the support. Each of the channels is equipped with a shut-off valve.

New in the utility model is that the primary and secondary channels are communicated with the support through a common supply line equipped with a coolant pressure measuring sensor located in front of the support. The cooling system includes a device for the reservation of a cooling substance, including a compressor, a reservoir, an electromagnetic valve and a backup channel. The drive is communicated with the common highway through the electromagnetic valve backup channel.

In FIG. 1 presents the inventive cooling system of the compressor support.

The cooling system of the compressor support 1 comprises a main channel 2 and an additional air supply channel 3 communicated with the support through a common supply line 4. Channels 2 and 3 are equipped with shut-off valves 5. In the common line 4, in front of the support 1, a sensor 6 for measuring air pressure is installed. The system is equipped with an air reservation device, which includes a compressor 7, an accumulator 8, an air pressure measuring sensor 9 in the accumulator 8, an electromagnetic valve 10 and a backup channel 11. The accumulator 7 communicates with the common highway 4 through the electromagnetic valve 10 by the backup channel 11.

The cooling system of the support 1 of the compressor operates as follows.

Before starting the operation of the turbomachine, the compressor 7 of the backup device is started, which pumps air into the accumulator 8 and, when the required pressure is reached in the accumulator 8, it is switched off by the signal of the sensor 9.

When the compressor is operating, air under pressure enters through the main channel 2 into a common highway 4 to the support 1.

When the cooling air pressure decreases in the common line 4, the pressure sensor 6 gives a signal, an additional channel 3 opens, through which air begins to flow into the common line 4. At the same time, the signal is supplied to the electromagnetic valve 10, which opens the backup channel 11 and the air under pressure from the accumulator 8 begins to flow into the common line 4. When the required pressure is reached, the sensor 6 gives a signal, the electromagnetic valve 10 closes the backup channel 11. The compressor 7 of the backup device, pumps air into the accumulator 8 and when the required pressure in the accumulator 8 is reached, it is switched off by the signal of the sensor 9.

Providing the cooling system with a backup device will compensate for the lack of cooling air during malfunctions or when the pressure drops in the channels during unsteady operating modes of the cooling air supply to the magnetic bearings of the turbocharger.

Claims (1)

The cooling system of the support of a turbomachine, including the main and additional channels for supplying coolant to the support, equipped with shut-off valves, characterized in that the main and additional channels are in communication with the support through a common supply line equipped with a sensor for measuring the pressure of the coolant located in front of the support, while the system the cooling system includes a redundant coolant device including a compressor, a reservoir, a solenoid valve and a backup channel, wherein the accumulator ene general manifold through the electromagnetic valve redundant channel.

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