SU590509A1 - Plain bearing - Google Patents

Description

In addition, a significant loss of gas produced by the gas-forming substance due to its leakage occurs in the device. The substance used in the device after gas production requires a complete replacement.

The aim of the invention is to increase the efficiency of the device by eliminating gas losses and gas-generating substances.

This goal is achieved by the fact that the sliding bearing is connected to a reversible gas storage device built into it based on rare-earth cobalt or nickel hydrides, which can release and absorb large amounts of hydrogen gas.

These hydrides release hydrogen gas when heated and absorb it when cooled.

The high gas-generating capacity of these hydrides allows the bearing to be performed directly with gas lubrication (aerostatic), which makes it possible to reduce the moment of friction on the bearing shaft.

For this purpose, it is proposed to connect the sliding bearing with the porous liner to the gas accumulator in such a way that the gas from the storage device escapes through the pores of the insert into the working gap of the bearing, in which the lifting force arises as a result of gas pressure, i.e., carrying capacity.

In order to maintain the pressure of the gas, it is necessary to produce heating of the gas-forming substance.

In order to prevent gas losses, the gas storage device should be made sectional, part of the sections of which should be included in the mode of absorption of exhaust gas in the bearing. For this section, those in regeneration mode (gas accumulation) should be cooled.

Heating and cooling of the gas storage cells are expediently carried out using semiconductor thermoelectric converters, which allow heating and cooling the storage material at the same time due to the fact that when electric current passes through these thermocouples, one end of them is heated when the other is cooled.

The imp is shown a sectional slider bearing proposed by the example of an angular contact bearing with five sections of a gas accumulator.

The bearing has a stud (pin) 1, installed with a gap of 2 relative to the liner 3. The liner 3 is made of a porous material capable of passing gas in the radial direction.

The bearing housing 4 has partitions 5, forming chambers 6, filled, for example, with lanthanum-nickel hydride, which is capable of intensively accumulating and releasing hydrogen when heated.

Each chamber is sealed and has

gas outlet only through porous liner 3.

In the partitions separating the chambers — sections of the gas accumulator — thermoelectric converters 7 are installed, allowing either HaqjeB or cooling of the gas-forming substance to be produced, filling these chambers, and if one of the sections is heated by this thermoforming agent,

friend, prnmykayup 1, and, to him a section, it is cooled.

Thermoelectric converters are included in pairs to meet each other so that the two converters produce heat or

cooling of the gas accumulator sections, between them.

When the lanthanum-nickel hydride is heated, the latter begins to release hydrogen, which through the porous liner enters the

The working gap of the bearing is where the gas pressure arises, which in turn forms the bearing lifting force and its bearing capacity. The exhaust gas moves in the direction of the adjacent section of the gas storage device, which at this moment is cooled and is able to accumulate the waste hydrogen in the bearing, which flows through the porous liner into the corresponding chamber from the working gap.

bearing.

After the carrier gas has been consumed in the operating sections, the latter are switched to the regeneration mode, and the bearing bearing capacity is maintained

due to the sections that accumulate hydrogen in the previous work cycle.

Switching the mode of operation of the storage device} / is realized by changing the direction of the electric current through the semiconductor

thermoelectric converters.

Naturally, part of the hydrogen gas will come out through the gap between the bearing housing and the spike. This natural hydrogen loss should be periodically replenished with a recharge gas storage tank from an external source of hydrogen gas when it is blown through a cooled bearing. Due to the fact that chemically pure hydrogen is generated in the gas accumulator, the device does not pollute and close the pores of the porous liner, which increases reliability and increases the service life of the bearing.

Claims (5)

Invention Formula . A sliding bearing containing porous liners located in the housing and sources of gas overpressure, having gas-forming elements, located in chambers formed by a wall of corulus, transverse partitions and porous liners installed in it, and also heaters characterized in that to increase eco-commerce equipped with gas scavengers and coolers. 2. A bearing according to Claim 1, characterized in that the heaters and coolers are mounted in the bulkheads of the housing. 3. A bearing according to Claim 1, characterized in that the heaters and coolers are mounted between the body partitions in their middle part, the body having an additional closed chamber communicating with said chambers. 4. Bearing according to claim 1, about tl and h and hI, p and the fact that the gas-forming element contains a gas absorption substance and is made, for example, of rare-earth - cobalt pl nickel hydride. 5. The sliding liner according to claim 1, characterized in that the heaters and coolers are made in the form of thermal converters. Sources of information taken into account in the examination 1. Kopstaptinesku VN Gazov lubrication M., “Mechanical Engineering, 1968, p. 199-275. 2. USSR author's certificate No. 388141, cl. F 16C 17/12, 28.12.70.