Oil injection tilting pad bearing for chlorine gas compressor

Abstract

The utility model discloses an oil injection tilting pad bearing for a chlorine gas compressor, which comprises an annular bearing seat, a plurality of arc-shaped bearing bushes are arranged in the annular bearing seat, and the arc-shaped bearing bushes are obliquely arranged in the annular bearing seat and are mutually spaced in the circumferential direction. A plurality of oil spraying holes are formed in the face, close to the center of the annular bearing seat, of the arc-shaped bearing bush, a tile oil way communicated with the oil spraying holes is arranged in the arc-shaped bearing bush, and an oil inlet way communicated with the tile oil way is arranged in the annular bearing seat. Active oil feeding can be achieved, effective lubrication is kept in the whole process of starting, operating and stopping of equipment, bearing abrasion is reduced, and the vibration amplitude of a shaft is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tilting pad bearings, in particular to an oil-sprayed tilting pad bearing for a chlorine compressor. Background Art

[0002] The tilting pad bearing is mainly composed of a bearing seat, a tilting pad, a bearing cover, an oil inlet hole, etc. The existing tilting pad bearings used in turbine chlorine compressors mainly rely on the relative movement of the shaft and the bearing to bring in lubricating oil. When the bearing is working, the shaft diameter and the tilting pad on the tilting pad bearing move relative to each other, bringing the lubricating oil between the two friction surfaces, and the fluid dynamic pressure of the lubricating oil film forms a load-bearing oil wedge between the tilting pad surface and the journal surface, which completely separates the two surfaces from contact.

[0003] The existing tilting pad bearings mainly rely on the relative movement of the shaft and the bearing to bring in lubricating oil, and cannot be effectively lubricated during startup, shutdown, and low-speed stages. Because the bearings have no active oil supply method, the lubricating oil is passively brought in by the high-speed relative movement of the shaft and the bearing. During the entire process of equipment startup, operation, and shutdown, effective lubrication cannot be maintained, resulting in bearing wear and increased vibration amplitude of the shaft. Utility Model Content

[0004] The utility model aims to provide an oil-injected tilting pad bearing for a chlorine compressor, which can realize active oil feeding, maintain effective lubrication during the whole process of equipment startup, operation and shutdown, reduce bearing wear and reduce the vibration amplitude of the shaft.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an oil-injected tilting pad bearing for a chlorine compressor, comprising an annular bearing seat, wherein a plurality of arc-shaped bearing pads are arranged in the annular bearing seat, wherein the arc-shaped bearing pads can be tiltably installed in the annular bearing seat and are circumferentially spaced from each other, wherein a plurality of oil injection holes are arranged on the surface of the arc-shaped bearing pad close to the center of the annular bearing seat, wherein a pad oil path connected to the oil injection holes is arranged in the arc-shaped bearing pad, and wherein an oil inlet path connected to the pad oil path is arranged in the annular bearing seat.

[0006] A further improvement of the utility model is that the annular bearing seat includes two semi-annular seat bodies, the two semi-annular seat bodies are connected by bolts, the upper and lower ends of the two seat bodies are respectively connected to bearing covers, and the arc-shaped bearing shell can be tiltedly installed on the opposite side of the two bearing covers.

[0007] A further improvement of the utility model is that the upper and lower ends of the arc-shaped bearing shell are respectively provided with connecting shafts, and the bearing cover is provided with a rotating groove matched with the connecting shaft, and the connecting shaft is rotatably connected in the rotating groove.

[0008] A further improvement of the utility model is that the oil inlet passage is connected to the rotation groove of the bearing cover located below, and the connecting shaft at the lower end of the arc-shaped bearing shell is a hollow shaft and is connected to the oil inlet passage.

[0009] A further improvement of the utility model is that the number of the oil inlet passages corresponds to the number of the arc-shaped bearing shells, and the oil inlet passage of each arc-shaped bearing shell is independently arranged.

[0010] A further improvement of the utility model is that an annular groove is provided on the outer peripheral surface of the annular bearing seat, and an oil inlet of the oil inlet circuit is provided in the annular groove.

[0011] A further improvement of the utility model is that the bearing cover is formed by docking with semi-annular sub-cover bodies corresponding to the two seat bodies.

[0012] A further improvement of the present invention is that the sub-cover body located at the bottom is integrally formed with the base body, and the sub-cover body located at the top is connected with the base body by bolts.

[0013] A further improved solution of the utility model is that the arc-shaped bearing bushes are provided with five pieces, and each arc-shaped bearing bush is provided with five oil injection holes which are arranged at intervals in the vertical direction.

[0014] A further improved solution of the utility model is that a labyrinth seal matching with the connecting shaft is arranged in the rotation groove of the bearing cover located at the bottom.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a connected oil path in the annular bearing seat and the arc-shaped bearing shell, and an oil injection hole is provided on the arc-shaped bearing shell. The shaft is directly lubricated by oil injection through the oil injection hole, and active oil supply can be achieved. Effective lubrication is maintained during the entire process of equipment startup, operation, and shutdown, thereby reducing bearing wear and reducing the vibration amplitude of the shaft.

[0017] The number of oil inlet circuits of the utility model corresponds to the number of the arc-shaped bearings, and the oil inlet circuit of each arc-shaped bearing is independently arranged, so that precise oil supply can be achieved. Each oil circuit can independently control the flow rate and pressure, and flexibly control the oil inlet position. Even if one oil circuit fails, the other oil circuits can still be lubricated, thereby effectively improving the lubrication effect of the shaft.

[0018] In the utility model, the sub-cover body located below is formed integrally with the seat body, which reduces the possibility of oil leakage compared to separate bodies and improves assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] Figure 2It is a schematic diagram of the main cross-section of the structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the main structure of the utility model.

[0022] Figure 4 It is a schematic structural stereoscopic diagram of the arc-shaped bearing bush of the utility model.

[0023] Figure 5 It is a schematic diagram of a top view cross section of the structure of the arc-shaped bearing bush of the present utility model.

[0024] In the figure, 1-annular bearing seat, 2-arc bearing, 3-oil injection hole, 4-bearing block oil circuit, 5-oil inlet circuit, 6-seat body, 7-connecting shaft, 8-rotating groove, 9-ring groove, 10-oil inlet, 11-sub-cover body, 12-labyrinth seal, 13-locating pin, 14-seat body connecting bolt, 16-return oil ring groove. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Example

[0026] Combination Figures 1 to 5 It can be seen that an oil-injected tilting pad bearing for a chlorine compressor includes an annular bearing seat 1, in which a plurality of arc-shaped bearing pads 2 are arranged. The arc-shaped bearing pads 2 can be tiltably installed in the annular bearing seat 1 and are circumferentially spaced from each other. A plurality of oil injection holes 3 are arranged on the surface of the arc-shaped bearing pad 2 close to the center of the annular bearing seat 1, a pad oil passage 4 connected to the oil injection holes 3 is arranged in the arc-shaped bearing pad 2, and an oil inlet passage 5 connected to the pad oil passage 4 is arranged in the annular bearing seat 1.

[0027] The annular bearing seat 1 includes two semi-annular seat bodies 6, which are connected by bolts. The upper and lower ends of the two seat bodies 6 are respectively connected with bearing covers, and the arc-shaped bearing shells 2 can be tiltedly installed on the opposite sides of the two bearing covers.

[0028] The upper and lower ends of the arc-shaped bearing bush 2 are respectively provided with a connecting shaft 7, and the bearing cover is provided with a rotating groove 8 that matches the connecting shaft 7. The connecting shaft 7 is rotatably connected in the rotating groove 8. The rotating groove 8 of the bearing cover located at the bottom is provided with a labyrinth seal 12 that matches the connecting shaft 7, so that the arc-shaped bearing bush 2 can rotate without oil leakage.

[0029] The oil inlet passage 5 is connected to the rotating groove 8 of the bearing cover located below, and the connecting shaft 7 at the lower end of the arc-shaped bearing shell 2 is a hollow shaft and is connected to the oil inlet passage 5. The number of oil inlet passages 5 corresponds to the number of arc-shaped bearing shells 2, and the oil inlet passage 5 of each arc-shaped bearing shell 2 is independently set.

[0030] An annular groove 9 is provided on the outer peripheral surface of the annular bearing seat 1 , and an oil inlet 10 of the oil inlet passage 5 is provided in the annular groove 9 .

[0031] The bearing cap is formed by docking the semi-circular sub-cover bodies 11 corresponding to the two seat bodies 6. The sub-cover body 11 located at the bottom is integrally formed with the seat body 6, and the sub-cover body 11 located at the top is connected to the seat body 6 by bolts. Preferably, a positioning groove is provided on the upper end surface of the seat body 6, and a positioning pin matching the positioning groove is provided at the lower end of the sub-cover body 11 located at the top, and the sub-cover body 11 is fixed by bolts after being positioned.

[0032] There are five arc-shaped bearing bushes 2, and each arc-shaped bearing bush 2 has five oil injection holes 3 arranged vertically at intervals. Preferably, a 1 mm thick Babbitt alloy is provided on the surface of the arc-shaped bearing bush 2 close to the center of the annular bearing seat 1. Figure 5 The path of the oil injection hole 3 is a curved path, and the angle of the path enables the oil to enter the gap between the shaft and the bearing more efficiently.

[0033] An oil return ring groove 16 is provided on the inner wall of the bearing cover. Preferably, an oil discharge hole is provided in the oil return ring groove 16, and the oil return ring groove 16 is connected to the outside through the oil discharge hole.

[0034] The working principle of the oil-injected tilting pad bearing for a chlorine compressor provided by the utility model is as follows: when working, the lubricating oil is injected into the oil inlet hole 10, the oil enters the arc-shaped bearing 2 through the oil inlet oil passage 5, and is sprayed out from the oil injection hole 3 through the oil passage 5 of the arc-shaped bearing 2, forming an oil film between the shaft diameter and the tilting pad, ensuring the lubrication effect, reducing the bearing wear, and reducing the vibration amplitude of the shaft

[0035] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. Any equivalent structure or equivalent process transformation made using the contents of the utility model specification and the accompanying drawings, or directly or indirectly used in other related technical fields, are similarly included in the patent protection scope of the present utility model.

Claims

1. An oil-injected tilting pad bearing for a chlorine compressor, comprising an annular bearing seat (1), wherein a plurality of arc-shaped bearing pads (2) are arranged in the annular bearing seat (1), wherein the arc-shaped bearing pads (2) are tiltably mounted in the annular bearing seat (1) and are circumferentially spaced from each other, and characterized in that: The arc-shaped bearing shell (2) is provided with a plurality of oil injection holes (3) on its surface close to the center of the annular bearing seat (1); a bearing block oil path (4) communicating with the oil injection holes (3) is provided in the arc-shaped bearing shell (2); and an oil inlet path (5) communicating with the bearing block oil path (4) is provided in the annular bearing seat (1).

2. The oil-injected tilting pad bearing for a chlorine gas compressor according to claim 1, characterized in that: The annular bearing seat (1) comprises two semi-annular seat bodies (6), the two semi-annular seat bodies (6) are connected by bolts, the upper and lower ends of the two seat bodies (6) are respectively connected to bearing covers, and the arc-shaped bearing shell (2) can be tiltedly mounted on the opposite side of the two bearing covers.

3. The oil-injected tilting pad bearing for a chlorine gas compressor according to claim 2, characterized in that: The upper and lower ends of the arc-shaped bearing bush (2) are respectively provided with a connecting shaft (7), and the bearing cover is provided with a rotating groove (8) matching with the connecting shaft (7), and the connecting shaft (7) is rotatably connected in the rotating groove (8).

4. The oil-injected tilting pad bearing for a chlorine gas compressor according to claim 3, characterized in that: The oil inlet passage (5) is in communication with a rotation groove (8) of a bearing cover located below, and the connecting shaft (7) at the lower end of the arc-shaped bearing shell (2) is a hollow shaft and is in communication with the oil inlet passage (5).

5. The oil-injected tilting pad bearing for a chlorine gas compressor according to claim 1, characterized in that: The number of the oil inlet passages (5) corresponds to the number of the arc-shaped bearing shells (2), and the oil inlet passage (5) of each arc-shaped bearing shell (2) is independently arranged.

6. The oil-injected tilting pad bearing for a chlorine gas compressor according to claim 1, characterized in that: An annular groove (9) is provided on the outer peripheral surface of the annular bearing seat (1), and an oil inlet (10) of the oil inlet passage (5) is provided in the annular groove (9).

7. The oil-injected tilting pad bearing for a chlorine gas compressor according to claim 2, characterized in that: The bearing cover is formed by butting together semi-annular sub-cover bodies (11) corresponding to the two seat bodies (6).

8. The oil-injected tilting pad bearing for a chlorine gas compressor according to claim 7, characterized in that: The sub-cover body (11) located at the bottom is integrally formed with the base body (6), and the sub-cover body (11) located at the top is connected to the base body (6) via bolts.

9. The oil-injected tilting pad bearing for a chlorine gas compressor according to claim 1, characterized in that: The arc-shaped bearing bushes (2) are provided with five pieces, and each arc-shaped bearing bush (2) is provided with five oil injection holes (3) which are arranged at intervals in the vertical direction.

10. The oil-injected tilting pad bearing for a chlorine gas compressor according to claim 3, characterized in that: A labyrinth seal (12) matching the connecting shaft (7) is provided in the rotation groove (8) of the bearing cover located below.

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