Oil retainer ring structure

Abstract

The utility model provides an oil deflector ring structure. The oil deflector ring structure comprises an oil deflector ring support, an oil deflector sealing ring, a compressor shaft end shield and a shield between a compressor and a driver. The oil blocking sealing ring is arranged on the coupler in a sealed mode, and an oil return structure is arranged on the oil blocking sealing ring. One end of the oil deflector ring support is in sealing connection with the oil deflector sealing ring through a spigot, and the other end of the oil deflector ring support is connected with one end of the compressor shaft end shield; the other end of the compressor shaft end shield is connected with a compressor rotating shaft; and the protective cover between the compressor and the driver is connected with the compressor shaft end protective cover. The oil retainer structure provided by the utility model has a function of blocking two-phase oil, and can solve the problem of oil leakage at a connecting sealing surface of a connecting shield between a compressor and a driving machine.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment sealing, in particular to an oil retaining ring structure. Background Art

[0002] Centrifugal compressors are important general-purpose mechanical equipment in the chemical industry. As competition in the large compressor market becomes increasingly fierce, the market not only focuses on traditional mechanical performance indicators such as efficiency and reliability of compressor units, but also on the appearance and cleanliness of compressor units during operation. However, the current centrifugal compressor units are prone to oil leakage due to poor sealing, which leads to problems such as "dripping, running, and leaking" in centrifugal compressor units that affect the appearance and working environment of the equipment.

[0003] At present, during the operation of centrifugal compressor units, a large amount of oil gas and discharged oil generated when the compressor runs at high speed will enter the connecting shield between the compressor and the driver, and it is easy to cause oil leakage at the connecting sealing surface, thus affecting the appearance of the equipment and the working environment.

[0004] Therefore, there is an urgent need to solve the problem of oil leakage on the connection sealing surface caused by a large amount of oil gas and discharged oil liquid generated when the compressor runs at high speed entering the connection shield between the compressor and the driver. Utility Model Content

[0005] The utility model aims to provide an oil retaining ring structure with the function of blocking two-phase oil, so as to solve the oil leakage problem at the connection sealing surface of the connection shield between the compressor and the driving machine.

[0006] In order to solve the above technical problems, the utility model provides an oil baffle ring structure, including an oil baffle ring bracket, an oil baffle sealing ring, a compressor shaft end shield, and a shield between the compressor and the driving machine;

[0007] The oil retaining seal ring is sealingly arranged on the coupling, and an oil return structure is arranged on the oil retaining seal ring;

[0008] One end of the oil retaining ring bracket is connected to the oil retaining sealing ring through a stopper seal, and the other end of the oil retaining ring bracket is connected to one end of the compressor shaft end shield;

[0009] The other end of the compressor shaft end shield is connected to the compressor shaft;

[0010] The compressor and driver shield is connected to the compressor shaft end shield.

[0011] Furthermore, the oil retaining sealing ring is a circular ring structure whose inner diameter matches the outer diameter of the coupling, a plurality of parallel sealing teeth are radially arranged on the inner side of the oil retaining sealing ring, and an annular protrusion is radially arranged on the outer side of the oil retaining sealing ring.

[0012] Furthermore, the oil retaining ring bracket is a trumpet-shaped structure, the inner diameter of the small diameter end of the oil retaining ring bracket matches the outer diameter of the oil retaining sealing ring, and an annular groove matching the annular protrusion of the oil retaining sealing ring is provided on the inner side of the small diameter end of the oil retaining ring bracket, and the oil retaining ring bracket and the oil retaining sealing ring are sealed and connected by the cooperation of the annular protrusion and the annular groove stop.

[0013] Furthermore, a flange is provided at the large diameter end of the oil deflector ring bracket, and the large diameter end of the oil deflector ring bracket is fixedly connected to one end of the compressor shaft end shield through the flange.

[0014] Furthermore, the compressor shaft end shield is a cylindrical structure, and one end of the compressor shaft end shield connected to the oil retaining ring bracket extends radially inward to form an inner convex structure whose inner diameter matches the outer diameter of the large diameter end of the oil retaining ring bracket, and the compressor shaft end shield is connected to the large diameter end of the oil retaining ring bracket through the inner convex structure. A shield flange is provided at the other end of the compressor shaft end shield, and the compressor shaft end shield is connected to the end face of the compressor shaft through the shield flange.

[0015] Furthermore, the shield between the compressor and the driver is a cylindrical structure, the inner diameter of the shield between the compressor and the driver is smaller than the inner diameter of the compressor shaft end shield but larger than the inner diameter of the inner convex structure of the compressor shaft end shield, and one end of the shield between the compressor and the driver is fixedly connected to the inner convex structure.

[0016] Furthermore, the oil return structure includes an oil collecting groove arranged on the inner side of the oil retaining sealing ring and parallel to the sealing teeth, and an oil return hole arranged on the oil retaining sealing ring, and the oil return hole connects the oil collecting groove and the space between the compressor shaft end guard and the compressor shaft.

[0017] Furthermore, the oil return hole is inclined from the oil collecting groove toward a direction close to the axial center line of the oil retaining sealing ring.

[0018] The utility model provides an oil baffle ring structure, which reasonably utilizes the limited space of the compressor shaft end shield, seals the oil baffle sealing ring on the coupling, and seals the oil baffle ring bracket with a stopper on the oil baffle sealing ring, the other end of the oil baffle ring bracket is fixedly connected to the compressor shaft end shield, and the oil baffle sealing ring is stably sealed on the coupling, thereby forming a simple and effective sealing structure, which fundamentally solves the oil leakage phenomenon during the operation of the compressor.

[0019] The utility model provides an oil retaining ring structure, which is provided with an oil reflux groove structure, and can guide a small amount of oil to flow back into the compressor shield, thereby further reducing the generation of oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of an oil retaining ring structure provided in an embodiment of the utility model;

[0021] Figure 2 A right side view of an oil retaining seal ring of an oil retaining ring structure provided in an embodiment of the utility model;

[0022] Figure 3 A front view of an oil retaining seal ring of an oil retaining ring structure provided by an embodiment of the utility model;

[0023] Figure 4 A right side view of a half oil deflector ring support of an oil deflector ring structure provided by an embodiment of the utility model;

[0024] Figure 5 A front view of a half oil deflector ring support of an oil deflector ring structure provided by an embodiment of the utility model;

[0025] Figure 6 This is an enlarged view of point A of an oil retaining ring structure provided in an embodiment of the utility model.

[0026] Reference numerals

[0027] 1. Oil retaining ring bracket; 2. Oil retaining sealing ring; 3. Coupling; 4. Compressor shaft end shield; 5. Shield between compressor and driver; 6. Compressor shaft; 11. Annular groove; 12. Flange; 21. Sealing teeth; 22. Annular protrusion; 23. Oil collecting groove; 24. Oil return hole; 41. Inner convex structure; 42. Shield flange. DETAILED DESCRIPTION

[0028] See also Figure 1 The utility model provides an oil retaining ring structure, which includes an oil retaining ring bracket 1, an oil retaining sealing ring 2, a compressor shaft end shield 4 and a shield 5 between the compressor and the driving machine.

[0029] The oil retaining seal ring 2 is sealingly arranged on the coupling 3 , and an oil return structure is arranged on the oil retaining seal ring 2 .

[0030] Among them, one end of the oil retaining ring bracket 1 is connected to the oil retaining sealing ring 2 through a stop seal, and the other end of the oil retaining ring bracket 1 is connected to one end of the compressor shaft end shield 4.

[0031] The other end of the compressor shaft end shield 4 is connected to the compressor shaft 6 .

[0032] The compressor and driver shield 5 is connected to the compressor shaft end shield 4.

[0033] See also Figure 2 and Figure 3As a specific embodiment of the utility model, the oil retaining seal ring 2 is a circular ring structure whose inner diameter matches the outer diameter of the coupling 3. A plurality of parallel sealing teeth 21 are radially arranged on the inner side of the oil retaining seal ring 2, and an annular protrusion 22 is radially arranged on the outer side of the oil retaining seal ring 2.

[0034] See also Figure 4 and Figure 5 The two halves of the oil retaining ring bracket 1 are matched together to form a trumpet-shaped oil retaining ring bracket 1, the inner diameter of the small diameter end of the oil retaining ring bracket 1 matches the outer diameter of the oil retaining sealing ring 2, and the inner side of the small diameter end of the oil retaining ring bracket 1 is provided with an annular groove 11 matching the annular protrusion 22 of the oil retaining sealing ring 2, and the oil retaining ring bracket 1 and the oil retaining sealing ring 2 are sealed and connected by the cooperation of the annular protrusion 22 and the stopper of the annular groove 11.

[0035] The large diameter end of the oil retaining ring bracket 1 is provided with a flange 12, and the large diameter end of the oil retaining ring bracket 1 is fixedly connected to one end of the compressor shaft end shield 4 through the flange 12 by screws.

[0036] The compressor shaft end shield 4 is a cylindrical structure. One end of the compressor shaft end shield 4 connected to the oil retaining ring bracket 1 extends radially inward to form an inner convex structure 41 whose inner diameter matches the outer diameter of the large diameter end of the oil retaining ring bracket 1. The compressor shaft end shield 4 is fixedly connected to the flange 12 of the large diameter end of the oil retaining ring bracket 1 through the inner convex structure 41. A shield flange 42 is set at the other end of the compressor shaft end shield 4. The compressor shaft end shield 4 is fixedly connected to the shaft end surface of the compressor rotating shaft 6 through the shield flange 42 by screws.

[0037] The shield 5 between the compressor and the driver is a cylindrical structure. The inner diameter of the shield 5 between the compressor and the driver is smaller than the inner diameter of the compressor shaft end shield 4 but larger than the inner diameter of the inner convex structure 41 of the compressor shaft end shield 4. One end of the shield 5 between the compressor and the driver is fixedly connected to the inner convex structure 41, thereby being fixedly connected to the compressor shaft end shield 4.

[0038] See also Figure 6 The oil return structure includes an oil collecting groove 23 arranged on the inner side of the oil retaining sealing ring 2 and parallel to the sealing teeth 21, and an oil return hole 24 arranged on the oil retaining sealing ring 2. Among them, the oil return hole 24 connects the oil collecting groove 23 and the space between the compressor shaft end shield 4 and the compressor shaft 6. In addition, the oil return hole 24 is inclined from the oil collecting groove 23 toward the direction close to the axis of the oil retaining sealing ring 2. When enough liquefied oil and gas are gathered in the oil collecting groove 23, the oil return hole 24 will guide the liquefied oil and gas to the area where the space between the compressor shaft end shield 4 and the compressor shaft 6 is located.

[0039] When the centrifugal compressor is running, in the area where the compressor shaft end shield 4 is located, a large amount of lubricating oil smoke and reflux liquid lubricating oil will be generated due to the hydrodynamic oil film bearing under forced oil lubrication. Under the traditional oil retaining ring structure, oil gas and oil will enter the area where the shield 5 between the compressor and the driver is located, so that the lubricating oil will drip at the connecting surface between the compressor shaft end shield 4 and the shield 5 between the compressor and the driver.

[0040] The utility model provides an oil retaining ring structure, which utilizes the limited space of the compressor shaft end shield 4, seals and sets the oil retaining sealing ring 2 on the coupling 3, seals and connects the oil retaining ring bracket 1 on the stopper of the oil retaining sealing ring 2, and fixes the other end of the oil retaining ring bracket 1 on the compressor shaft end shield 4, and stably seals and fixes the oil retaining sealing ring 2 on the coupling 3, thereby forming a simple and effective sealing structure. Due to the sealed connection between the oil retaining sealing ring 2 and the coupling 3, specifically due to the sealed connection between the multiple rows of sealing teeth 21 arranged in parallel on the inner side of the oil retaining sealing ring 2 and the coupling 3, oil and gas are prevented from entering the area where the compressor shaft end shield 4 is located. Even if a small amount of oil and gas enters the area where the compressor shaft end shield 4 is located, due to the oil collection and reflux structure set on the oil retaining sealing ring 2, the liquefied oil and gas can be diverted to the area where the compressor shaft end shield 4 is located, thereby solving the oil leakage phenomenon during the operation of the compressor from the root.

[0041] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An oil retaining ring structure, characterized in that: It comprises an oil retaining ring bracket (1), an oil retaining sealing ring (2), a compressor shaft end shield (4), and a shield between the compressor and the driving machine (5); The oil retaining seal ring (2) is sealingly arranged on the coupling (3), and an oil return structure is arranged on the oil retaining seal ring (2); One end of the oil retaining ring bracket (1) is connected to the oil retaining sealing ring (2) through a stopper seal, and the other end of the oil retaining ring bracket (1) is connected to one end of the compressor shaft end shield (4); The other end of the compressor shaft end shield (4) is connected to the compressor rotating shaft (6); The compressor and driver shield (5) is connected to the compressor shaft end shield (4).

2. The oil slinger ring structure according to claim 1, characterized in that: The oil retaining seal ring (2) is a circular ring structure whose inner diameter matches the outer diameter of the coupling (3); a plurality of parallel sealing teeth (21) are radially arranged on the inner side of the oil retaining seal ring (2); and an annular protrusion (22) is radially arranged on the outer side of the oil retaining seal ring (2).

3. The oil slinger ring structure according to claim 2, characterized in that: The oil retaining ring bracket (1) is a trumpet-shaped structure, the inner diameter of the small diameter end of the oil retaining ring bracket (1) matches the outer diameter of the oil retaining sealing ring (2), and an annular groove (11) matching the annular protrusion (22) of the oil retaining sealing ring (2) is provided on the inner side of the small diameter end of the oil retaining ring bracket (1), and the oil retaining ring bracket (1) and the oil retaining sealing ring (2) are sealed and connected by the stopper cooperation of the annular protrusion (22) and the annular groove (11).

4. The oil slinger ring structure according to claim 3 is characterized in that: A flange (12) is provided at the large diameter end of the oil retaining ring bracket (1), and the large diameter end of the oil retaining ring bracket (1) is fixedly connected to one end of the compressor shaft end shield (4) via the flange (12).

5. The oil slinger ring structure according to claim 4, characterized in that: The compressor shaft end shield (4) is a cylindrical structure. One end of the compressor shaft end shield (4) connected to the oil retaining ring bracket (1) extends radially inward to form an inner convex structure (41) whose inner diameter matches the outer diameter of the large diameter end of the oil retaining ring bracket (1). The compressor shaft end shield (4) is connected to the large diameter end of the oil retaining ring bracket (1) through the inner convex structure (41). A shield flange (42) is provided at the other end of the compressor shaft end shield (4). The compressor shaft end shield (4) is connected to the shaft end face of the compressor shaft (6) through the shield flange (42).

6. The oil slinger ring structure according to claim 5, characterized in that: The compressor and driver shield (5) is a cylindrical structure, the inner diameter of which is smaller than the inner diameter of the compressor shaft end shield (4) but larger than the inner diameter of the inner convex structure (41) of the compressor shaft end shield (4), and one end of the compressor and driver shield (5) is fixedly connected to the inner convex structure (41).

7. The oil slinger ring structure according to claim 2, characterized in that: The oil return structure comprises an oil collection groove (23) arranged on the inner side of the oil retaining seal ring (2) and parallel to the sealing tooth (21), and an oil return hole (24) arranged on the oil retaining seal ring (2), wherein the oil return hole (24) communicates with the oil collection groove (23) and the space between the compressor shaft end shield (4) and the compressor shaft (6).

8. The oil slinger ring structure according to claim 7, characterized in that: The oil return hole (24) is inclined from the oil collection groove (23) toward a direction close to the axis of the oil retaining seal ring (2).

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