Compressor damping bearing

Abstract

The utility model discloses a compressor damping bearing which comprises an annular bearing seat, the bearing seat is formed by splicing two semi-annular bearing seat bodies, the outer sides of the two bearing seat bodies are connected and fixed through locking bolts, three evenly-distributed bearing pads are arranged on the inner wall of the bearing seat along the circumference, and the inner wall of the bearing seat is connected with the bearing pads through bolts. Each bearing pad is in a circular arc shape, a groove is formed in the top of each bearing pad, a cavity is formed between each groove and the inner wall of the bearing seat and forms an oil film static pressure area after being filled with lubricating oil, an oil inlet a penetrating in the radial direction is formed in the middle of each groove, a long-strip-shaped oil groove is formed in one end of the inner side of each bearing pad, and two oil inlets b extending to the outer side of each bearing pad are formed in each oil groove. The oil film static pressure areas are formed by the backs of the bearing pads and the inner space of the bearing seat, lubricating oil in the oil film static pressure areas can effectively relieve or completely avoid impact, vibration and noise, and meanwhile the damping bearing is simple in structure and convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a compressor damping bearing. Background Art

[0002] The main components of the compressor rotor include the casing, impeller assembly, oil and gas seal, sliding bearing, main shaft and sliding bearing. As an important core component, the sliding bearing bears dynamic loads in the compressor. In the prior art, the sliding bearing is mainly composed of a bearing shell and a bearing seat. Since there is a certain size of fitting clearance between the bearing shell and the bearing seat, it is easily affected by the reciprocating force when used in the compressor, and vibration, shock and noise are likely to occur. Utility Model Content

[0003] The purpose of the utility model is to provide a compressor damping bearing to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a compressor damping bearing, comprising a circular ring-shaped bearing seat, the bearing seat is formed by splicing two semi-circular ring-shaped bearing seat bodies, the two bearing seat bodies are connected and fixed on the outside by locking bolts, the inner wall of the bearing seat is provided with three evenly distributed bearing pads along the circumference, the bearing pad is arc-shaped and has a groove on the top, a cavity is formed between the groove and the inner wall of the bearing seat, and the cavity is filled with lubricating oil to form an oil film static pressure area, a radially penetrating oil inlet hole a is provided in the middle of the groove, a long strip oil groove is provided at one end of the inner side of the bearing pad, two oil inlet holes b extending to the outside of the bearing pad are provided in the oil groove, and a pad gap is formed between the end faces of two adjacent bearing pads.

[0005] Preferably, a positioning hole is provided on the outer side of the end of the bearing pad, and a radial positioning pin is installed on the bearing seat, and the front end of the positioning pin is against the positioning hole.

[0006] Preferably, an annular groove is provided on the outer side of the bearing seat and a radially penetrating oil inlet hole c is provided in the middle, the inner end of the oil inlet hole c is connected to the oil inlet hole b, and a plurality of radial stop pins are fixedly installed on the outer side of the bearing seat.

[0007] Compared with the prior art, the beneficial effects of the utility model are: the oil film static pressure zone formed by the back of the bearing pad and the internal space of the bearing seat, the lubricating oil in the oil film static pressure zone can effectively reduce the impact vibration and noise generation, and at the same time the damping bearing has a simple structure and is easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0009] Figure 2 It is a schematic diagram of the three-dimensional structure of the bearing pad;

[0010] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0011] Figure 4 It is a cross-sectional structural schematic diagram of the utility model.

[0012] In the figure: 1. bearing seat body; 2. bearing pad; 3. oil inlet hole b; 4. oil inlet hole a; 5. positioning hole; 6. positioning pin; 7. oil film static pressure area; 8. pad gap; 9. locking bolt; 10. stop pin; 11. oil inlet hole c. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0014] See also Figure 1-4 The utility model provides a technical solution: a compressor damping bearing, comprising a circular ring-shaped bearing seat, the bearing seat is formed by splicing two semi-circular ring-shaped bearing seat bodies 1, the two bearing seat bodies 1 are connected and fixed on the outside by locking bolts 9, and are convenient for installation and disassembly, the inner wall of the bearing seat is provided with three evenly distributed bearing pads 2 along the circumference, the outer side of the end of the bearing pad 2 is provided with a positioning hole 5, the positioning hole 5 is a blind hole, a radial positioning pin 6 is installed on the bearing seat, the front end of the positioning pin 6 is against the positioning hole 5, the bearing pad 2 is arc-shaped and has a groove on the top, a cavity is formed between the groove and the inner wall of the bearing seat, and the cavity is filled with lubricating oil to form an oil film static pressure zone 7, a radially penetrating oil inlet hole a4 is provided in the middle of the groove, the oil in the oil film static pressure zone 7 can effectively reduce the impact caused by the unbalanced load, reduce the excessive vibration or noise generated during the operation of the compressor equipment, and is conducive to improving the stability of the compressor operation.

[0015] An elongated oil groove is provided at one end of the inner side of the bearing pad 2. Two oil inlet holes b3 extending to the outer side of the bearing pad 2 are provided in the oil groove. The oil groove is used to collect lubricating oil to lubricate the shaft and the bearing pad. A pad gap 8 is formed between the end faces of two adjacent bearing pads 2. An annular groove is provided on the outer side of the bearing seat and a radially penetrating oil inlet hole c11 is provided in the middle. The inner end of the oil inlet hole c11 is connected to the oil inlet hole b3. The oil inlet hole c11 is used to supply oil from the outside to the inside. A plurality of radial stop pins 10 are fixedly installed on the outer side of the bearing seat. The stop pins 10 are used to position and constrain the bearing seat.

[0016] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compressor damping bearing, comprising a circular annular bearing seat, wherein the bearing seat is formed by splicing two semicircular annular bearing seat bodies (1), and the two bearing seat bodies (1) are connected and fixed on the outside by locking bolts (9), characterized in that: The inner wall of the bearing seat is provided with three evenly distributed bearing pads (2) along the circumference. The bearing pad (2) is arc-shaped and has a groove on the top. A cavity is formed between the groove and the inner wall of the bearing seat. The cavity is filled with lubricating oil to form an oil film static pressure area (7). A radially penetrating oil inlet hole a (4) is provided in the middle of the groove. An elongated oil groove is provided at one end of the inner side of the bearing pad (2). Two oil inlet holes b (3) extending to the outside of the bearing pad (2) are provided in the oil groove. A pad gap (8) is formed between the end faces of two adjacent bearing pads (2).

2. A compressor damping bearing according to claim 1, characterized in that: A positioning hole (5) is provided on the outer side of the end of the bearing pad (2), and a radial positioning pin (6) is installed on the bearing seat, and the front end of the positioning pin (6) is against the positioning hole (5).

3. A compressor damping bearing according to claim 1, characterized in that: The outer side of the bearing seat is provided with an annular groove and a radially penetrating oil inlet hole c (11) in the middle, the inner end of the oil inlet hole c (11) is connected to the oil inlet hole b (3), and a plurality of radial stop pins (10) are fixedly installed on the outer side of the bearing seat.

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