All-welded corrugated pipe type pressurizing oil tank adopting non-contact sensor

Abstract

The invention relates to an all-welded corrugated pipe type pressurizing oil tank adopting a non-contact sensor. The all-welded corrugated pipe type pressurizing oil tank adopting the non-contact sensor comprises an oil tank shell, a rear end cover, a corrugated pipe, a guide sleeve, a magnet, a non-contact displacement sensor and an inflation valve, wherein the corrugated pipe is connected with the rear end cover and the guide sleeve provided with the magnet in a welding manner so as to be arranged in the shell, so that a gas-liquid separation structure is formed jointly; the non-contact displacement sensor is installed on the outer side face of the oil tank shell; and the inflation valve and an oil inlet and outlet are located at the front end of the rear end cover and the front end of the shell respectively. According to the all-welded corrugated pipe type pressurizing oil tank adopting the non-contact sensor provided by the invention, due to the fact that the non-contact displacement sensor is adopted, on the basis that cost is reduced, a sealing device needed by a traditional contact displacement sensor is omitted, the structure of the oil tank is reduced, the weight of the oil tank is reduced, meanwhile, the leakage problem caused by long-time use of the sealing device is avoided, and the service life is prolonged, so that the all-welded corrugated pipe type pressurizing oil tank adopting the non-contact sensor is more economical and efficient; and the guide sleeve is in contact and clearance fit with the inner wall of the shell, so that friction damping generated when the corrugated pipe stretches out and draws back is reduced, and pressure compensation response is rapid.

Description

technical field [0001] The invention belongs to the technical field of aviation hydraulic servo actuation systems, and relates to a fully welded bellows type pressurized fuel tank using a non-contact sensor, in particular to a non-contact sensor arrangement for a bellows type pressurized fuel tank. Background technique [0002] In the field of aviation servo actuation, electric hydrostatic actuator is an emerging energy source for driving the rudder surface of the aircraft. In order to reduce the volume of hydraulic energy, the working speed of the plunger pump as the power component is increased, and in order to prevent the cavitation phenomenon of the plunger pump , Usually a pressurized oil tank is used as the pump inlet pressure compensation device. The existing pressurized oil tank sensors used to sense the oil level mostly use inductive displacement sensors and magnetostrictive displacement sensors, which are set by contact. One of the disadvantages is that due to the ...

AI Technical Summary

Problems solved by technology

The existing pressurized fuel tank sensors for sensing the oil level mostly use inductive displacement sensors and magnetostrictive displacement sensors, which are set in contact mode. The displacement sensor needs to set the necessary sealing device during installation, so the overall volume of the fuel tank becomes larger and the weight also increases

Second, long-term use will cause leakage at the seal installation, resulting in a decrease in the service life of the fuel tank

Third, inductive displacement sensors and magnetostrictive displacement sensors are more expensive than non-contact magnetic induction sensors, which increases the cost of the fuel tank

In addition, the existing bellows type pressurized oil tank mostly adopts the guiding method of the inner support guide rod, which also requires the necessary dynamic sealing device to be installed here, which brings problems of weight gain and leakage

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