DE1628198C - Device for supplying liquid-blocked glands - Google Patents

Description

the drain valve 25, which is open in normal operation, closes properly. The pressure gauges 31 to 33 can the control process can be tracked.

This device ensures that the auxiliary oil pump, because it is running unloaded, does not Is subject to wear and tear and thus in the event of a failure of the main oil pump - because it is full Revolving speed - available at any time, instantaneously and reliably to take over the oil supply is. Either the main pump that is defective as a result of the continuous load can then be replaced immediately or the power supply can be ensured again in the event of a power failure. In the event of a complete failure of the system If the dimensions are good, the directly driven auxiliary pump takes over almost to the outlet of the Machine the oil supply and thus prevents a dry run or an unpleasant, premature Pressurized gas escapes from the machine.

1 sheet of drawings

Claims (2)

1 2 high oil tank or gas-powered via elastic membranes. provide pressure-buffered auxiliary tanks; in the emergency patent claims: agile high pressures and the necessary static height for high tanks, this solution is expensive and 1. Device for supplying liquid 5 cumbersome. locked stuffing boxes, in particular from high The invention is the. Task is based on pressure machines, each with at least one main one device for supplying liquid barrier and emergency shut-off pump, thereby giving stuffing boxes of the type mentioned at the beginning the identification number, that the emergency shut-off device drive power should be kept small and, if the pump (21) of which the stuffing box (5) fails, the main shut-off device pump will send a full transmission immediately Machine (1) is driven and that would take the supply of the stuffing box with locking means (25, 26, 28) are provided in order to guarantee the emergency resources. . blocking agent pump (21) in normal operation to run along. , 'triggers the emergency shut-off pump from which the tamping 2. Device according to claim 1 ,. marked machine is driven with 15 bushings and net by means (27, 29, 34) for checking that means are provided in order to let the emergency locking means of the emergency locking means system (21, 23, 24, 25, pump run unloaded in normal operation), 28) during normal operation. sen. The invention is then based on a 20 circuit diagrams explained for example. The high • pressure synthesis gas compressor 1 - it can also a high-pressure compressor for chemical me- act dien - is provided with the labyrinths 3. From the one with a barrier liquid, for example 25 oil, filled container 7 lead suction lines from the suction filters 9 to the main oil pump 11 or to the emergency oil pump 21. The main oil pump 11 is The present invention relates to a device driven by the electric motor 13. She delivers . device for supplying liquid-blocked stuffing box sealing oil in the main sealing oil line 17, whereby the sen, especially on high-pressure machines, with 30 non-return valve 15 a backflow of the oil at least one main and one emergency locking device each. The main barrier oil line 17 leads to the pump. Oil stuffing boxes 5. The oil pressure in the sealing oil system 17 The sealing oil pumps for the supply of oil are blocked by the gas pressure in the chamber 14 High pressure stuffing boxes through which a controlled drain valve 12 via the drain lines 22 100% gas-tightness of the shaft design of a 35 and 30 machine with a predetermined overpressure must be guaranteed, are in the th. From the chambers 14, the barrier oil flows over the existing extreme pressures of e.g. 200 to return line 35 and the separator 36 in the 300 at very heavy loads, especially container 7 back. subject to the camp. A failure of the oil pressure regulator The direct from the shaft of the fan 1 supply, even if the 4 ° driven emergency oil pump 21 is switched off immediately, is via the auxiliary line 23 Plant, inevitably an immediate leak from and the check valve 24 also with the Working gas into the open and an associated main barrier oil line 17 connected. From the line Dry running with an accident which is normally carried out with oil 23, analogous to the main sealing oil system, via the lubricated stuffing boxes result. The safety discharge line 28, the second controlled by the gas pressure against failure of this sealing oil pump is accordingly 45 erte drain valve 25 and over the line 30 oil from of utmost importance. ' calmly. . A common safeguard is that the drain valve 25 is set so that it Main sealing oil pump directly with the machine shaft in normal operation, as long as the supply from the to drive and in the event of its failure, a pump 11 is automatically guaranteed correctly, remains open also the auxiliary oil pump required for starting up 50 and there is no in the line 23 after the pump 21 switch. Can develop pressure, so this pump is practical It can also run an e.g. electrically driven idle. The safety valve 20 allows a Pump can be used for normal supply, with backflow of the barrier oil from the pressure system during then in the event of a power failure or a pump breakdown, an emergency exceeding a predetermined pressure in the pre-seal oil pump, driven from a reserve barrel. Direct current network, from a diesel emergency power supply - Only when the overpressure in the main supply or from an auxiliary steam turbine, the oil barrier oil line 17, d. H. in the event of failure of the normal Ensures supply. __ supply, valve 25 begins to close, where- In such systems, the necessary drive line is then the emergency oil pump 21 to supply the performance even with a small amount of oil due to the high 60 main barrier oil system via the check valve 24 The delivery pressure is very high, e.g. over 30kW, so that it can take over, but with one - corresponding Start-up, both with electrical and with Türchend, is the one-line drive staggered with respect to valve 12 for an immediate full takeover of the position of valve 25 - slightly lower excess oil supply is too slow. As a result, the pressure would have to. The pressure after orifice 29 in the branch emergency oil pump with its associated drive continuously 65 line 26 can by means of the test valve 27, which is in the run along empty. Connecting line 34 is arranged to be lowered Another possibility for immediate over- take, in order to reduce the pressure in the main drawer the oil pressure supply consists in simulating a blocking oil line 17 and checking whether