High-low pressure cavity cable connection seal box for low-temperature immersed centrifugal turbine generator power transmission

Abstract

The invention discloses a high-low pressure cavity cable connection seal box for low-temperature immersed centrifugal turbine generator power transmission. The high-low pressure cavity cable connection seal box is characterized in that the high-low pressure cavity cable connection seal box comprises a junction box and a conductor rod, the conductor rod is arranged in the junction box, conical surface sealing is adopted between the conductor rod and the junction box, one end of the conductor rod is used for being connected with a wire of a motor arranged in a low-temperature immersed centrifugal turbine, and the other end of the conductor rod is used for being connected with a low-temperature power cable in the low-temperature immersed centrifugal turbine. According to the cable connection seal box, the power supplying of the generator can be ensured, and when the electronic transmission is conducted, due to the fact that the conical surface sealing is adopted between the conductor rod in the seal box and the junction box in the seal box, the sealing performance is good, the phenomenon that the performance of a unit is degraded due to the fact that media in a high-pressure cavity leaks into a low-pressure cavity can be avoided, and the efficiency of the whole machine is improved.

Description

Technical field [0001] The invention relates to a high-low-voltage cavity cable connection sealing box used for power transmission of a low-temperature submersible centrifugal turbine generator, and belongs to the field of cable connection sealing between high and low-voltage cavities in a low-temperature submersible hydraulic turbine. Background technique [0002] At present, the JT valve is used in the LNG plant to depressurize the high-pressure LNG from the cold box and then store it. Since the LNG is saturated and easy to vaporize, the valve is used to throttle and reduce pressure, resulting in a large amount of flash steam of the LNG It reduces the output of liquefaction. Therefore, the use of low-temperature submersible centrifugal hydraulic turbines for pressure reduction can increase the production of LNG by 5%. At present, imported turbine equipment is under a technological monopoly and is expensive. All domestic natural gas liquefaction plants use J-T valves for pressu...

AI Technical Summary

Problems solved by technology

At present, the imported turbine equipment is in a technological monopoly and is expensive. All domestic natural gas liquefaction plants use J-T valves to reduce pressure. Therefore, a large amount of liquefied natural gas is vaporized and the liquefaction output is reduced.

Images