A large unit oil pump sealing device

Abstract

The utility model discloses a large -scale unit oil pump sealing device relates to mechanical part technical field, including movable assembly, including first clamping ring and second clamping ring, first clamping ring outer wall is equipped with first clamping piece, and second clamping ring outer wall is equipped with second clamping piece, first clamping piece and second clamping piece are arranged in opposition to stagger, stable component is located in movable assembly inside, and the hole is opened in the cooperation of mechanical shaft in the center, first clamping piece and second clamping piece are arranged in opposition to stagger through the setting, can combine annular support when extruding, and the stability and sealing property of device are strengthened, at the same time, the central fixed ring of stable component inside, top fixed ring and bottom fixed ring structure design, cooperate sealing washer and threaded connection's connecting ring, have further improved the sealing effect, solved the existing sealing device connection loose, the insufficient strength, and the problem that easily leads to the poor sealing property because of vibration, ensure that still can keep good sealing effect under the high pressure or high -speed operation condition.

Description

Technical Field

[0001] This utility model relates to the field of mechanical parts technology, and in particular to a sealing device for a large unit oil pump. Background Technology

[0002] During operation, the various components of a generator unit undergo relative motion, such as bearings and journals, gears and gears, which generate friction and wear. To reduce friction, minimize wear, extend equipment lifespan, and ensure normal unit operation, effective lubrication of these moving parts is essential. Lubricating oil not only forms an oil film to isolate friction but also provides cooling, cleaning, and rust prevention. The primary task of the oil pump in a large generator unit is to deliver lubricating oil to all lubrication points, ensuring a continuous supply and appropriate oil pressure to meet the lubrication requirements of the generator system.

[0003] During normal operation, the unit requires a stable supply of lubricating oil to the lubrication system. The sealing device effectively prevents lubricating oil from leaking from the high-pressure side of the chamber to the outside, ensuring that the outlet oil pressure meets design requirements and guaranteeing reliable delivery of lubricating oil to critical components such as bearings, achieving good lubrication and cooling effects. Poor sealing can lead to a drop in oil pressure, resulting in insufficient lubricating oil supply, affecting the normal operation of the oil pump unit, and potentially damaging the equipment due to increased friction.

[0004] However, existing sealing devices have loose and insufficient connections, resulting in low space utilization. Furthermore, the strength and stability between structures are inadequate, and even minor offsets or vibrations generated by the machine can lead to poor sealing.

[0005] Based on the above problems, we propose a sealing device for oil pumps in large generating units. Summary of the Invention

[0006] Therefore, the technical problem to be solved by this utility model is: how to overcome the problems of loose connection, insufficient strength, and poor sealing performance caused by vibration in existing sealing devices, so as to ensure that good sealing effect can still be maintained under high pressure or high speed operation conditions and extend the service life of equipment.

[0007] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a sealing device for a large unit oil pump, which includes a movable component, including a first snap ring and a second snap ring; the outer wall of the first snap ring is provided with a first snap piece, and the outer wall of the second snap ring is provided with a second snap piece; the first snap piece and the second snap piece are arranged opposite to each other in an alternating manner; a stabilizing component is provided inside the movable component, and a channel for cooperating with a mechanical shaft is opened in the center.

[0008] In a preferred embodiment of the large unit oil pump sealing device of this utility model: the first snap-fit ​​piece and the second snap-fit ​​piece can be combined to form a ring support.

[0009] In a preferred embodiment of the large unit oil pump sealing device of this utility model: an elastic element is provided between the first snap ring and the second snap ring.

[0010] In a preferred embodiment of the large unit oil pump sealing device of this utility model: the stabilizing component includes a central fixing ring disposed inside the movable component.

[0011] In a preferred embodiment of the large unit oil pump sealing device of this utility model: one end of the central fixing ring is provided with a top fixing ring, and the other end is provided with a bottom fixing ring.

[0012] In a preferred embodiment of the large unit oil pump sealing device of this utility model: the top fixing ring and the bottom fixing ring have the same diameter, and the diameter of the top fixing ring and the bottom fixing ring is larger than that of the central fixing ring.

[0013] In a preferred embodiment of the large unit oil pump sealing device of this utility model: the bottom fixing ring is provided with a ring groove in the direction away from the central fixing ring; a sealing ring is movably provided inside the ring groove; the sealing ring is made of fluororubber.

[0014] In a preferred embodiment of the large unit oil pump sealing device of this utility model: the top fixing ring has a threaded groove in the direction away from the central fixing ring; a connecting ring is movably provided inside the threaded groove.

[0015] In a preferred embodiment of the large unit oil pump sealing device of this utility model: the outer wall of the connecting ring is provided with a thread that matches the threaded groove, and the connecting ring is threadedly connected to the top fixing ring.

[0016] The beneficial effects of this utility model are as follows: by setting the first and second snap-fit ​​pieces arranged in opposite and staggered directions, they can be combined to form a ring support during compression, enhancing the stability and sealing of the device; at the same time, the structural design of the central fixing ring, top fixing ring and bottom fixing ring inside the stabilizing component, together with the sealing ring and the threaded connection ring, further improves the sealing effect and overall strength, effectively solving the problems of loose connection, insufficient strength and easy deterioration of sealing performance due to vibration in existing sealing devices, ensuring that a good sealing effect can still be maintained under high pressure or high speed operating conditions, and extending the service life of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:

[0018] Figure 1 A schematic diagram of the overall structure of the sealing device is shown;

[0019] Figure 2 A schematic diagram of the connection structure between the sealing device and the sealing ring is shown;

[0020] Figure 3 A schematic diagram of the connection structure of the active components is shown;

[0021] Figure 4 A schematic diagram of the connection structure of the stable components is shown;

[0022] Figure 5 A schematic diagram of the connecting ring structure is shown;

[0023] Figure 6 A schematic diagram of the connection structure between the first and second contact clips is shown.

[0024] Figure 7 A schematic diagram of the connection structure between the first and second contact clips is shown.

[0025] Figure 8 A schematic diagram of the connection structure between the first and second contact tabs is shown. Detailed Implementation

[0026] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0027] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0028] Reference Figures 1 to 8This embodiment provides a sealing device for a large-scale unit oil pump, including a movable component 1, comprising a first retaining ring 11 and a second retaining ring 12. The first retaining ring 11 and the second retaining ring 12 have the same diameter and are made of silicon carbide. The outer wall of the first retaining ring 11 is provided with a first retaining piece 111, and the first retaining ring 11 and the first retaining piece 111 are fixedly connected and integrally stamped. The outer wall of the second retaining ring 12 is provided with a second retaining piece 121, and the second retaining ring 12 and the second retaining piece 121 are fixedly connected and integrally stamped. Figures 6-8 As shown, the first snap-fit ​​piece 111 and the second snap-fit ​​piece 121 are arranged in an alternating pattern. The first snap-fit ​​piece 111 and the second snap-fit ​​piece 121 can be arranged in different shapes; in this application, a rectangular shape is preferred, allowing the first snap-fit ​​piece 111 and the second snap-fit ​​piece 121 to have a larger contact area, providing stronger support and stability. When arranged in an alternating pattern, the rectangular snap-fit ​​pieces can effectively disperse stress and reduce local stress concentration. The stabilizing component 2 is located inside the movable component 1, and the movable component 1 is movably fitted onto the outer wall of the stabilizing component 2. Both the stabilizing component 2 and the movable component 1 have holes in their centers for cooperating with a mechanical shaft, providing stable support for the mechanical shaft and ensuring the concentricity and stability of the sealing device during operation.

[0029] In one embodiment provided in this application, the first snap ring 11 moves toward the second snap ring 12, and at the same time, the second snap ring 12 also moves toward the first snap ring 11. During the relative movement of the first snap ring 11 and the second snap ring 12, the first snap piece 111 and the second snap piece 121 gradually approach each other and eventually merge to form a ring support structure, which enhances the overall stability of the device and reduces the risk of poor sealing due to vibration or displacement.

[0030] In one embodiment provided in this application, such as Figure 3 As shown, an elastic element 13 is provided between the first snap ring 11 and the second snap ring 12. The elastic element 13 is sleeved on the outer wall of the first snap ring 11 and the second snap ring 12. When the first snap piece 111 and the second snap piece 121 are combined, the elastic element 13 is in a compressed state. When the first snap piece 111 and the second snap piece 121 are completely separated, the elastic element 13 is in a released state.

[0031] In one embodiment provided in this application, such as Figure 4 As shown, the stabilizing component 2 includes a central fixing ring 21 disposed inside the movable component 1. The stabilizing component 2 is made of graphite impregnated with furan resin. When the first snap-fit ​​piece 111 and the second snap-fit ​​piece 121 are combined, the central fixing ring 21 will undergo elastic deformation. When the first snap-fit ​​piece 111 and the second snap-fit ​​piece 121 are completely separated, the central fixing ring 21 will return to its original shape.

[0032] In one embodiment provided in this application, such as Figure 1 and Figure 2 As shown, the central fixing ring 21 has a top fixing ring 22 at one end and a bottom fixing ring 23 at the other end. Both the top fixing ring 22 and the bottom fixing ring 23 are fixedly connected to the central fixing ring 21. The first snap-fit ​​ring 11 is movably sleeved on the outer wall of the top fixing ring 22. There is friction between the first snap-fit ​​ring 11 and the top fixing ring 22. When the first snap-fit ​​piece 111 and the second snap-fit ​​piece 121 are combined, the top fixing ring 22 is still wrapped around the inner wall of the first snap-fit ​​ring 11. The second snap-fit ​​ring 12 is movably sleeved on the outer wall of the bottom fixing ring 23. There is friction between the second snap-fit ​​ring 11 and the bottom fixing ring 23. When the first snap-fit ​​piece 111 and the second snap-fit ​​piece 121 are combined, the bottom fixing ring 23 is still wrapped around the inner wall of the second snap-fit ​​ring 12.

[0033] In one embodiment provided in this application, such as Figure 4 As shown, the top fixing ring 22 and the bottom fixing ring 23 have the same diameter, which ensures the symmetry and balance of the overall structure of the device. This allows the sealing device to be subjected to uniform force during installation and operation, avoiding offset or deformation caused by uneven force. Furthermore, under high pressure or high speed operating conditions, the symmetrical design can effectively reduce the impact of vibration on sealing performance, thereby improving the stability and reliability of the equipment operation. The top fixing ring 22 is used to install the connecting ring 222, providing additional support and fixation to ensure the stability of the sealing device during operation. The bottom fixing ring 23 provides bottom support to ensure the stability of the sealing device during operation and can also be used to install the sealing ring 232.

[0034] In one embodiment provided in this application, such as Figure 4 As shown, the diameters of the top fixing ring 22 and the bottom fixing ring 23 are larger than those of the central fixing ring 21. The larger top fixing ring 22 and the bottom fixing ring 23 can provide a wider support surface, enhancing the stability and vibration resistance of the entire device. Under high pressure or high speed operating conditions, it can effectively reduce the problem of reduced sealing performance caused by equipment displacement or vibration, ensuring that the sealing device maintains a good working condition for a long time. The design that the diameters of the top fixing ring 22 and the bottom fixing ring 23 are larger than those of the central fixing ring 21 optimizes the overall structural strength of the device. When the first snap-fit ​​piece 111 and the second snap-fit ​​piece 121 are combined to form a ring support, the top fixing ring 22 and the bottom fixing ring 23 can better wrap around the first snap-fit ​​piece 11 and the second snap-fit ​​piece 12, thereby dispersing stress and reducing local stress concentration.

[0035] In one embodiment provided in this application, such as Figures 1-4As shown, the bottom fixing ring 23 has an annular groove 231 in the direction away from the central fixing ring 21. The design of the annular groove 231 provides a clear installation position and limiting function for the sealing ring 232. The sealing ring 232 is movably installed inside the annular groove 231, which can effectively prevent lubricating oil from leaking from the high-pressure side of the sealing device to the outside. The sealing ring 232 is made of fluororubber. Since the diameter of the bottom fixing ring 23 is larger than that of the central fixing ring 21, the space of the annular groove 231 is more ample, which facilitates the installation and replacement of the sealing ring 232 and enhances the sealing effect of the sealing ring 232. The bottom fixing ring 23 forms a stable sealing structure through the cooperation of the annular groove 231 and the sealing ring 232. During the operation of the equipment, especially under high pressure or high speed conditions, the sealing ring 232 can absorb some vibration energy and reduce the risk of seal failure caused by vibration.

[0036] In one embodiment provided in this application, such as Figure 4 and Figure 5 As shown, the top retaining ring 22 has a threaded groove 221 in the direction away from the central retaining ring 21. The design of the threaded groove 221 allows the connecting ring 222 to be easily installed and removed. When it is necessary to repair or replace the sealing device, the connecting ring 222 can be rotated to complete the disassembly without complicated tools or operating procedures. The connecting ring 222 is movably installed inside the threaded groove 221. The connecting ring 222 can form an additional sealing barrier between the top retaining ring 22 and the mechanical shaft, reducing the risk of lubricating oil leakage.

[0037] In one embodiment provided in this application, such as Figure 4 and Figure 5 As shown, the outer wall of the connecting ring 222 is provided with a thread 223 that matches the threaded groove 221. The connecting ring 222 is threadedly connected to the top fixing ring 22. Through the threaded connection, the connecting ring 222 can be firmly installed on the top fixing ring 22 to form an integral structure, which enhances the overall strength of the sealing device and can effectively resist the loosening problem caused by equipment vibration or pressure changes, thereby ensuring the stability of the device under high pressure or high speed operating conditions.

[0038] In use, the movable component 1 is fitted onto the outer wall of the stabilizing component 2, ensuring that the holes of the central fixing ring 21, the top fixing ring 22, and the bottom fixing ring 23 are precisely aligned with the mechanical shaft of the large unit's oil pump. Under the action of external force, the first locking ring 11 and the second locking ring 12 of the movable component 1 move relative to each other, causing the first locking piece 111 and the second locking piece 121 to gradually approach and merge to form a ring support structure. During this process, the elastic element 13 provides compressive force to ensure that the first locking piece 111 and the second locking piece 121 are in close contact, thereby enhancing the overall stability and sealing of the device. At the same time, the stabilizing component 2 provides stable concentricity support for the mechanical shaft. The sealing ring 232 set in the bottom fixing ring 23 effectively prevents lubricating oil leakage, while the top fixing ring 22, through the threaded connection between the threaded groove 221 and the connecting ring 222, further enhances the structural strength and vibration resistance of the device, ensuring that the sealing device can still maintain a good sealing effect under high pressure or high speed operating conditions, and extending the service life of the equipment.

[0039] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A large unit oil pump sealing device characterized by: include, The active component (1) includes a first snap ring (11) and a second snap ring (12); The outer wall of the first snap ring (11) is provided with a first snap piece (111), and the outer wall of the second snap ring (12) is provided with a second snap piece (121); The first snap-fit ​​piece (111) and the second snap-fit ​​piece (121) are arranged opposite each other in an alternating manner; The stabilizing component (2) is located inside the active component (1) and has a channel in the center that cooperates with the mechanical shaft.

2. The sealing device for a large-scale unit oil pump according to claim 1, characterized in that: The first snap-fit ​​piece (111) and the second snap-fit ​​piece (121) can be combined to form a ring support.

3. The sealing device for a large-scale unit oil pump according to claim 1 or 2, characterized in that: An elastic element (13) is provided between the first snap ring (11) and the second snap ring (12).

4. The sealing device for a large-scale unit oil pump according to claim 1, characterized in that: The stabilizing component (2) includes a central fixing ring (21) disposed inside the movable component (1).

5. The sealing device for a large-scale unit oil pump according to claim 4, characterized in that: The central fixing ring (21) has a top fixing ring (22) at one end and a bottom fixing ring (23) at the other end.

6. The sealing device for a large-scale unit oil pump according to claim 5, characterized in that: The top fixing ring (22) and the bottom fixing ring (23) have the same diameter, and the diameter of the top fixing ring (22) and the bottom fixing ring (23) is larger than that of the central fixing ring (21).

7. The sealing device for a large-scale unit oil pump according to claim 5 or 6, characterized in that: The bottom fixing ring (23) has a ring groove (231) in the direction away from the central fixing ring (21); A sealing ring (232) is movably provided inside the annular groove (231); The sealing ring (232) is made of fluororubber.

8. The sealing device for a large-scale unit oil pump according to claim 7, characterized in that: The top fixing ring (22) has a threaded groove (221) in a direction away from the central fixing ring (21); A connecting ring (222) is movably provided inside the threaded groove (221).

9. The sealing device for a large-scale unit oil pump according to claim 8, characterized in that: The outer wall of the connecting ring (222) is provided with a thread (223) that matches the threaded groove (221). The connecting ring (222) is threadedly connected to the top fixing ring (22).

Images