阅读说明：本技术 一种新型的空悬浮轴承保护系统 (Novel air suspension bearing protection system ) 是由 蔡子嘉 薛晓东 王凤荣 王铁军 啜广毅 于 2020-07-10 设计创作，主要内容包括：本发明涉及一种新型的空悬浮轴承保护系统。该一种新型的空悬浮轴承保护系统包括：空悬浮轴承和压缩空气系统；所述空悬浮轴承上设有多个通气孔,所述通气孔连接压缩空气系统,压缩空气系统上设有的敏感元件能够感知空悬浮轴承内的空气压力,在空气压力减少时,压缩空气系统将空气通过通气孔补充进去。本发明提供的一种新型的空悬浮轴承保护系统,有效延长转子和轴承的寿命的同时,降低转子和轴承之间的摩擦,提高传动效率,降低能耗。(The invention relates to a novel air suspension bearing protection system. This novel empty suspension bearing protection system includes: an air suspension bearing and a compressed air system; the air suspension bearing is provided with a plurality of air holes, the air holes are connected with a compressed air system, a sensing element arranged on the compressed air system can sense the air pressure in the air suspension bearing, and when the air pressure is reduced, the compressed air system supplements air into the air suspension bearing through the air holes. The novel protection system for the air suspension bearing provided by the invention has the advantages that the service life of the rotor and the bearing is effectively prolonged, the friction between the rotor and the bearing is reduced, the transmission efficiency is improved, and the energy consumption is reduced.)

1. A novel air suspension bearing protection system is characterized by comprising: an air suspension bearing (1) and a compressed air system; a plurality of vent holes (2) are formed in the air suspension bearing (1), and the vent holes (2) are connected with a compressed air system.

2. A novel empty suspension bearing protection system according to claim 1, characterized in that a plurality of evenly distributed vent holes (2) are arranged on the empty suspension bearing (1), and the vent holes (2) are arranged on the housing (3) of the empty suspension bearing (1).

3. The new airborne bearing protection system of claim 1, characterized in that said compressed air system comprises: an instrument air tank (5); the device is characterized in that the instrument gas storage tank (5) is respectively connected with the air suspension bearing (1) and the instrument gas pipeline (12), a drain valve (9) and a safety valve (11) are arranged on the instrument gas storage tank (5), and a stop valve (8) is arranged on the pipeline (12) between the instrument gas storage tank (5) and the drain valve (9).

4. A novel protection system for an air suspension bearing according to claim 3, characterized in that the instrument air storage tank (5) is connected with the vent hole (2) on the air suspension bearing (1) through a stop valve (8), a regulating valve (10) and a check valve (7).

5. The novel protection system for the air suspension bearing according to claim 3, characterized in that the instrument air storage tank (5) is connected with the check valve (7) through two pipelines (12), a stop valve (8) and a regulating valve (10) are respectively arranged on the two pipelines (12), and the two pipelines (12) are used and prepared; the air suspension bearing (1) is provided with a pressure sensor (13) and a positive and negative rotation detector (14); the two regulating valves (10) are respectively connected with a pressure sensor (13) and a positive and negative rotation detector (14) through pipelines.

Technical Field

The invention relates to an air suspension bearing, in particular to a novel air suspension bearing protection system, and particularly relates to an air suspension bearing protection system which is involved in starting of the air suspension bearing, power failure of equipment and reverse rotation of a rotor.

Background

Currently, air-air suspension bearings are distinguished from conventional oil lubricated bearings in that the air suspends the shaft by the air pressure formed between the rotor and the bearing as the rotor rotates at high speeds. Before starting, the rotor and the bearing are in physical contact, and when the rotor reaches a certain speed, the air pressure enables the shaft to float, and the lubricating and supporting effects are achieved. The air bearing has the advantages that: when the rotor rotates at high speed, the rotor and the bearing are not in physical contact, and almost no energy is lost, so that the efficiency of the whole machine can be improved.

The existing air suspension bearing has the following defects:

1. when the rotor is started, physical friction exists between the rotor and the bearing, the service life of equipment is influenced, and energy consumption is increased;

2. when the equipment using the air suspension bearing is suddenly powered off and the rotor is reduced to a certain rotating speed, the air interlayer cannot effectively support the bearing, the service life of the bearing is also influenced, and the energy consumption is increased;

3. in the use of the 1-in-1 spare system of the air suspension bearing equipment, if the spare equipment outlet cuts off the valve and can not be cut off effectively (the leakage in the valve is a common engineering problem), when the fluid flows back into the spare equipment, the spare equipment is reversed, the rotor and the bearing can be in a friction state consistently, and the service life of the bearing is seriously influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a novel protection system for an air suspension bearing, which solves the technical problems and is a novel protection system for an air suspension bearing, which is used for protecting a rotor and a bearing when the air suspension bearing is started, the equipment is powered off and a spare equipment outlet partition door leaks by adding a compressed air system.

In order to achieve the purpose, the invention provides the following technical scheme:

a novel air suspension bearing protection system comprises: an air suspension bearing and a compressed air system; and a plurality of vent holes are arranged on the air suspension bearing and are connected with a compressed air system.

The air suspension bearing is provided with a plurality of uniformly distributed vent holes, and the vent holes are arranged on a shell of the air suspension bearing.

Wherein the compressed air system comprises: an instrument gas storage tank; the instrument gas storage tank is respectively connected with the air suspension bearing and the instrument gas pipeline, a drain valve and a safety valve are arranged on the instrument gas storage tank, and a stop valve is arranged on the pipeline between the instrument gas storage tank and the drain valve.

Wherein, the air storage tank for the instrument is connected with the vent hole on the air suspension bearing through a stop valve, a regulating valve and a check valve.

The instrument gas storage tank is connected with the check valve through two pipelines, the two pipelines are respectively provided with a stop valve and an adjusting valve, and the adjusting valves of the two pipelines are connected with an air suspension bearing provided with a pressure sensor and a forward and reverse rotation detector through pipelines.

Wherein, the pressure sensor is arranged on a pipeline which can measure the air pressure in the air suspension bearing.

Wherein the instrument gas stored in the instrument gas storage tank is conveyed through a pipeline provided with a stop valve and a check valve.

The invention has the beneficial effects that: according to the novel protection system for the air suspension bearing, the rotor and the bearing are protected when the air suspension bearing is started, the equipment is powered off, and a spare equipment outlet partition door leaks. The service life of the rotor and the bearing is effectively prolonged, meanwhile, the friction between the rotor and the bearing is reduced, the transmission efficiency is improved, and the energy consumption is reduced.

For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.

Drawings

The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.

FIG. 1 is a cross-sectional view of an air bearing of the novel air bearing protection system of the present invention;

fig. 2 is a schematic view of a compressed air system of the novel air suspension bearing protection system of the present invention.

Reference numerals:

1: an air suspension bearing; 2: a vent hole; 3: a housing; 4: an air inlet; 5: an instrument gas storage tank; 6: an inner ring of metal foil; 7: a check valve; 8: a stop valve; 9: a drain valve; 10: adjusting a valve; 11: a safety valve; 12: a pipeline; 13: a pressure sensor; 14: positive and negative rotation detector.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Referring to fig. 1 to 2, a novel protection system for an air suspension bearing includes: an air suspension bearing 1 and a compressed air system; a plurality of vent holes 2 are formed in the air suspension bearing 1, and the vent holes 2 are connected with a compressed air system.

Further, a plurality of vent holes 2 which are uniformly distributed are formed in the air suspension bearing 1, and the vent holes 2 are formed in a shell 3 of the air suspension bearing 1.

The vent holes 2 are uniformly distributed on the shell 3 of the air suspension bearing 1, and the structure of the vent holes 2 is the same as that of the air inlet 4 arranged on the air suspension bearing 1.

Empty suspension bearing 1 is current empty suspension bearing 1 structure, has changed the shell 3 structure of empty suspension bearing 1 on the basis of current empty suspension bearing 1 structure, is equipped with a plurality of evenly distributed's air vent 2 on the shell 3. The vent hole 2 is connected with a compressed air system.

Further, the compressed air system includes: an instrument gas storage tank 5; the instrument gas storage tank 5 is respectively connected with the air suspension bearing 1 and the instrument gas pipeline 12, a drain valve 9 and a safety valve 11 are arranged on the instrument gas storage tank 5, and a stop valve 8 is arranged on the pipeline 12 between the instrument gas storage tank 5 and the drain valve 9.

The instrument gas is transmitted to the instrument gas storage tank 5 through a pipeline 12, and a stop valve 8 and a check valve 7 are provided on the pipeline 12.

The instrument gas is first passed through the check valve 8 through the check valve 7 to the instrument gas storage tank 5 through the line 12.

The safety valve 11 can prevent overpressure of the instrument gas in the instrument gas storage tank 5, and the instrument gas in the storage tank 5 is decompressed through the safety valve 11 after overpressure.

The drain valve 9 is used for discharging condensed water generated when the instrument air in the instrument air storage tank 5 is cooled out of the instrument air storage tank 5.

Further, the air storage tank 5 for the instrument is connected with the vent hole 2 on the air suspension bearing 1 through a stop valve 8, a regulating valve 10 and a check valve 7.

The instrument gas in the instrument gas storage tank 5 enters the air suspension bearing 1 from the vent hole 2 through a pipeline 12 with a stop valve 8, a regulating valve 10 and a check valve 7 in sequence.

Further, the instrument air storage tank 5 is connected with a check valve 7 through two pipelines 12, a stop valve 8 and an adjusting valve 10 are respectively arranged on the two pipelines 12, and the two pipelines 12 are used one by one (one is used, and the other is used); the air suspension bearing 1 is provided with a pressure sensor 13 and a positive and negative rotation detector 14, and positive and negative rotation is judged through a motor phase sequence.

Pressure sensor 13 perception empty suspension bearing 1's intracavity pressure, when the pressure in empty suspension bearing 1 intracavity was less than the threshold value of setting for, pressure sensor 13 linked governing valve 10 opened, and the instrument gas in the instrument gas storage tank 5 is used to the intracavity transport instrument gas of empty suspension bearing 1, guarantees that the air in the empty suspension bearing 1 can not step down suddenly or disappear, makes the slow stall of empty suspension bearing 1 under compressed air's protection.

The positive and negative rotation detector 14 detects the bearing rotation direction of the air suspension bearing 1 (or detects through the phase sequence of the motor), when the bearing rotation is reversed, the regulating valve 10 linked with the positive and negative rotation detector 14 is opened, instrument air in the instrument air storage tank 5 is conveyed to the cavity of the air suspension bearing 1, the friction between the rotor and the bearing is reduced, and the service life of the rotor and the bearing is effectively prolonged.

Further, the pressure sensor 13 is provided on the pipe 12 capable of measuring the air pressure in the air bearing 1.

The pressure sensor 13 is arranged on the pipeline 12 which can sense the pressure in the cavity of the air suspension bearing 1. The position of the pressure sensor 13 is not fixed, and the position of the pressure sensor 13 is selected according to the actual situation.

Further, the instrument air stored in the instrument air storage tank 5 is supplied through a pipe 12 provided with a stop valve 8 and a check valve 7.

The working principle is as follows:

the instrument air is introduced into the instrument air reservoir 5 through a pipe 12 provided with a check valve 8 and a check valve 7. The condensed water after the instrument air stored in the instrument air storage tank 5 is cooled is discharged out of the instrument air storage tank 5 through the stop valve 8 and the drain valve 9.

The safety valve 11 arranged on the instrument gas storage tank 5 can display the pressure of the instrument gas in the instrument gas storage tank 5 to the instrument gas storage tank 5, and after the pressure is greater than the set value of the instrument gas storage tank 5, the safety valve 11 is used for relieving the pressure of the instrument gas storage tank 5.

The two devices with the empty suspension bearings 1 are used for one another for standby, the empty suspension bearings 1 on the two devices are separated through the separation valve, and if the separation valve cannot be effectively separated, fluid flows backwards into the standby devices, or the empty suspension bearings 1 are started or powered off. The rotor and the bearing in the air suspension bearing 1 are low in rotating speed, friction can be generated between the rotor and the bearing, and at the moment, compressed air is introduced between the rotor and the bearing of the air suspension bearing 1 through the air vent 2 through the compressed air system, so that the friction between the rotor and the bearing is reduced. When the air suspension bearing 1 reaches a certain rotating speed and air suspension can be formed between the bearing and the rotor, the work of the compressed air system is stopped.

The condition that the rotor and the bearing rotational speed in the empty suspension bearing 1 are low can be perceived through the pressure sensor 13 that empty suspension bearing 1 department was equipped with, and when pressure sensor 13 perceived empty suspension bearing 1 pressure low, pressure sensor 13 worked through the chain governing valve 10 of circuit for the interior appearance of appearance air storage tank 5 among the compressed air system is used the appearance and is gone into between the rotor and the bearing in the empty suspension bearing 1 through the pipeline 12 that has stop valve 8, governing valve 10, check valve 7.

When the bearing in the air suspension bearing 1 rotates reversely, the forward and reverse rotation detector 14 detects the rotation condition of the bearing, and the regulating valve 10 interlocked with the forward and reverse rotation detector 14 is opened, so that the instrument air in the instrument air storage tank 5 in the compressed air system enters between the rotor and the bearing in the air suspension bearing 1 through the pipeline 12 with the stop valve 8, the regulating valve 10 and the check valve 7 to adjust the rotating speed between the rotor and the bearing and reduce the abrasion between the rotor and the bearing.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.