Novel pressure stabilization device for double-end surface sealing of turbine pump

Abstract

The invention relates to a novel pressure stabilization device for double-end surface sealing of a turbine pump. The novel pressure stabilization device comprises an oil cylinder, an oil inlet guiding pipe, a balance piston, a cylinder cover and a balance loop circuit, wherein the oil cylinder is fixedly arranged on a turbine pump body and is divided into an isoflurane oil cavity and a propellant cavity by the balance piston, one end of the oil inlet guiding pipe is fixedly arranged at one end of the oil cylinder and is communicated with the isoflurane oil cavity, the other end of the oil inlet guiding pipe is fixedly arranged on a turbine pump shell and is connected with a closed oil cavity, the cylinder cover is fixedly arranged at the other end of the oil cylinder, one end of the balance loop circuit is fixedly arranged on the cylinder cover and is communicated with the propellant cavity through the cylinder cover, and the other end of the balance loop circuit is fixedly arranged on the turbine pump body and is communicated with an oxidant pump inlet pipeline. The novel pressure stabilization device for the double-end surface sealing of the turbine pump, disclosed by the invention, has the advantages that the phenomenon that the end surface sealing is damaged due to abnormal high pressure of the isoflurane oil cavity during the work of a double-end surface sealing structure of an engine turbine pump is overcome, the volume is small, the weight is light, high temperature resistance and corrosion resistance are realized, the novel pressure stabilization device is beneficial for long-time storage and does not need to be subjected to secondary maintenance, and meanwhile, the high pressure of the isoflurane oil cavity can be eliminated.

Description

technical field [0001] The invention relates to a pressure stabilizing device, in particular to a novel pressure stabilizing device suitable for double-end seals of engine turbo pumps, which can be used for lubricating, stabilizing, releasing and maintaining pressure of the double-end seal structures of engine turbo pumps. Background technique [0002] As the heart of the engine, the turbo pump has the characteristics of high temperature, high pressure, high speed and corrosive medium. Turbo pumps include pumps, turbines, and various sealing components. A double seal structure is adopted between the oxidizer pump and the turbine of the engine turbo pump in a finalized state. The spring type face seal 2 is the main seal, which is close to the oxidant pump, and the bellows type face seal 1 is the auxiliary seal, which is close to the turbine side. Between the seals is a closed oil chamber 12, which is filled with fluoroether oil to cool and lubricate. In recent years, double...

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Problems solved by technology

[0005] In order to overcome the abnormal high pressure of the fluoroether oil cavity in the double-end seal structure of the engine turbo pump, which leads to the damage of the end seal, solve the problem that the existing voltage stabilizing device requires secondary maintenance (replenishment gas is required, which is not conducive to long-term storage), low reliability, Due to the shortcomings of limited pressure stabilization ability, the present invention provides a new type of pressure stabilization device with double-end seals for turbo pumps. At the same time, it can eliminate the pressure stabilizing device of the high pressure in the oil chamber

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