Efficient channel type bearing component
By designing efficient channel-type bearing components and adopting structures such as oil collectors and heat sinks, the temperature rise problem of single-stage cantilever centrifugal pump bearings under high-temperature conditions has been solved, achieving uniform lubrication and temperature control of the bearings and extending their service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-03-10
AI Technical Summary
In single-stage cantilever centrifugal pumps, excessive temperature rise in the bearings under high-temperature conditions leads to uneven temperature distribution and insufficient lubrication, affecting bearing life.
Design a high-efficiency channel-type bearing component, including a bearing housing, an oil collector, heat sinks, and lubricating oil channels. Through an oil slinger ring and a lubricating oil circuit system, it achieves effective cooling and uniform distribution of lubricating oil, and combined with pure oil mist lubrication, it reduces the bearing temperature.
Effectively control bearing temperature rise and improve bearing life, especially significantly reduce temperature under high-temperature conditions, ensuring adequate lubrication and service life of the bearing.
Smart Images
Figure CN223984603U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fluid machinery equipment technology, and in particular to a high-efficiency channel bearing component used in a single-stage cantilever pump. Background Technology
[0002] Single-stage cantilever centrifugal pumps account for a significant proportion of applications in the petrochemical industry. Excessive temperature rise in the bearings of large-scale single-stage cantilever centrifugal pumps is a major technical challenge, especially under high-temperature conditions. Excessive temperature rise shortens the bearing's lifespan and consequently affects the lifespan of bearing components. Currently, there are two main methods to address the bearing temperature rise problem.
[0003] One method is to use an oil slinger ring and a fan for cooling. This method mainly cools the outside of the bearing. However, the temperature field is uneven, and the bearing far from the fan still has a high temperature rise. The oil slinger ring throws lubricating oil into the bearing housing cavity, which may result in insufficient lubrication of the bearing and reduce its service life.
[0004] Secondly, adding a finned tube cooling system to the lubricating oil sump can reduce the temperature of the lubricating oil. Due to the poor thermal conductivity of lubricating oil, the continuously running bearing will cause the lubricating oil around it to generate excessively high local temperatures, which in turn will lead to excessively high bearing temperatures and affect the bearing's service life.
[0005] In view of the problems existing in the above-mentioned prior art, it is necessary to research and design a new type of high-efficiency channel bearing component to overcome the problems existing in the prior art. Summary of the Invention
[0006] To address the technical problems mentioned above, such as uneven temperature field distribution, high temperature rise of bearings far from the fan, insufficient bearing lubrication, excessive local temperature rise of lubricating oil around the bearing, excessive bearing temperature, and impact on bearing life, a high-efficiency channel bearing component is provided.
[0007] The technical means adopted in this utility model are as follows:
[0008] A high-efficiency channel bearing component includes: a bearing housing, a bearing gland, a pump shaft, an oil slinger ring, an oil slinger ring sleeve, and an oil collection rack;
[0009] Furthermore, an oil slinger ring is installed in the middle of the pump shaft, and an oil slinger ring is installed in the groove of the oil slinger ring.
[0010] Furthermore, the pump shaft is externally fitted with a bearing housing and a bearing pump cover;
[0011] Furthermore, an oil collection rack is installed inside the bearing housing;
[0012] Furthermore, the oil collection rack is a reverse cone with a certain slope to facilitate the flow of lubricating oil;
[0013] Furthermore, oil channels A and B are drilled at both ends of the oil collection frame.
[0014] Furthermore, a pair of angular contact bearings are installed on the drive end of the bearing housing and locked in place by lock nuts and washers;
[0015] Furthermore, a deep groove ball bearing is installed at the non-drive end of the bearing housing to withstand the radial force generated by the impeller.
[0016] Furthermore, after the pump shaft is fitted with the drive end and non-drive end bearings, it is transferred into the bearing housing, and then the bearing cover is assembled.
[0017] Furthermore, a non-drive side mechanical seal is installed on the non-drive side of the bearing housing;
[0018] Furthermore, a drive-side mechanical seal is fitted onto the bearing pump cover.
[0019] Furthermore, the bearing housing is machined with an oil return channel, which is a certain distance from the bottom of the bearing. This facilitates oil storage, ensures bearing lubrication, further reduces bearing temperature, and extends bearing service life.
[0020] Furthermore, an oil passage is provided on the bearing cap at the position corresponding to the oil return channel of the bearing housing to guide the lubricating oil to flow back to the oil sump.
[0021] Furthermore, a vent plug is provided on the bearing housing to balance the pressure difference between the inside and outside of the bearing components.
[0022] Furthermore, several heat sinks are provided on the bearing housing, and a fan is installed near the drive end bearing to accelerate the airflow around the bearing components and reduce the temperature rise of the bearing components.
[0023] Furthermore, a pure oil mist interface A is provided on the bearing housing, and a pure oil mist interface B is provided on the bearing cover, so that when the bearing components adopt the pure oil mist lubrication scheme, the lubricating oil is collected into the inner cavity of the bearing housing through the channel-type oil passage.
[0024] Furthermore, the bearing housing is equipped with vibration test mounting interfaces, integrated oil cup interfaces, cooling / heating winding tube interfaces, and temperature sensor mounting interfaces on both sides.
[0025] Furthermore, the bearing components can employ two lubrication methods: pure oil mist lubrication or oil slinger ring lubrication, which more effectively reduces the bearing housing temperature and extends the bearing's service life.
[0026] The working principle of this utility model is as follows:
[0027] As the shaft rotates, the lubricating oil is drawn from the bottom of the oil tank by the oil slinger ring. At the same time, the oil is thrown out as the oil slinger ring rotates. Several heat dissipation fins are provided on the outside of the bearing housing. Most of the lubricating oil is thrown onto the inner wall of the housing, which helps to cool the lubricating oil. Another part of the lubricating oil falls onto the oil collector of the bearing housing and enters the lubricating oil passage through the oil passage hole on the oil collector, and enters the rear of the bearing. The lubricating oil delivered to the bearing in this way can return to the oil sump by flowing through the bearing.
[0028] Compared with the prior art, the present invention has the following advantages:
[0029] 1. The high-efficiency channel bearing component provided by this utility model effectively reduces the temperature rise of the bearing component and significantly improves the bearing life. Especially in high-temperature conditions, the temperature rise of the bearing component is effectively controlled.
[0030] 2. The high-efficiency channel bearing component provided by this utility model allows the bearing to be better lubricated, thus extending the bearing's service life.
[0031] In summary, the technical solution of this utility model solves the problems in the prior art such as uneven temperature field distribution, high temperature rise of bearings far from the fan, insufficient bearing lubrication, excessive local temperature rise of lubricating oil around the bearing, excessive bearing temperature, and impact on bearing life. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0033] Figure 1 This is a schematic diagram of the structure of this utility model;
[0034] Figure 2 This is a side sectional view of the present invention;
[0035] Figure 3 This is a schematic diagram of the lubricating oil flow in the bearing cap of this utility model.
[0036] In the diagram: 1. Bearing housing; 2. Pure oil mist interface A; 3. Vent plug; 4. Heat sink; 5. Bearing cap; 6. Pure oil mist interface B; 7. Pump shaft; 8. Non-drive side mechanical seal; 9. Oil collector oil passage A; 10. Oil slinger ring; 11. Oil slinger ring sleeve; 12. Oil collector; 13. Oil collector oil passage B; 14. Drive side mechanical seal. Detailed Implementation
[0037] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0039] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0040] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
[0041] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0042] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0043] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0044] like Figure 1-3 As shown, this utility model provides a high-efficiency channel-type bearing component including: bearing housing 1, pure oil mist interface A2, vent plug 3, heat sink 4, bearing cover 5, pure oil mist interface B6, pump shaft 7, non-drive side mechanical seal 8, oil collector oil passage A9, oil slinger ring 10, oil slinger ring sleeve 11, oil collector 12, oil collector oil passage B13, and drive side mechanical seal 14.
[0045] The oil slinger sleeve 11 is heat-fitted onto the pump shaft 7, and the oil slinger ring 10 is fitted onto the oil slinger sleeve 11; then a pair of angular contact bearings are installed on the drive end, and after installation, the drive end bearings are locked with lock nuts and washers. After completion, a deep groove ball bearing is installed on the non-drive end.
[0046] Next, install the non-drive side mechanical seal 8, the drive side mechanical seal 14, and the oil seal of the bearing cap 5 in the bearing housing 1. The bearing housing 1 is equipped with an oil collector 12, which has a certain slope and is a reverse cone shape. The oil collector 12 has oil channels A9 and B13 drilled at both ends. The oil return channel of the bearing housing 1 is machined at a certain distance from the bottom of the bearing, which is conducive to oil storage and ensures bearing lubrication. The bearing housing 1 is equipped with a vibration test installation interface, an integrated oil cup interface, a cooling / heating winding tube interface, a temperature sensor installation interface, a pure oil mist interface A2, and a pure oil mist interface B6 on both sides. The corresponding bearing cap 5 is equipped with an oil passage to guide the lubricating oil to flow back to the oil sump.
[0047] Install the pump shaft 7, which has been fitted with the oil slinger 11, oil slinger 10, and bearing, into the bearing housing 1, install the bearing cover 5, and tighten it with bolts.
[0048] Install the vent plug 3, integrated oil cup, pure oil mist interface A2, pure oil mist interface B6 (if oil mist lubrication is not used, set the oil mist interface screw plug), lifting ring, drain plug and related accessories on the bearing housing 1.
[0049] The bearing components are bolted to the pump cover of the single-stage cantilever pump.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A high-efficiency channel type bearing component, characterized in that: the high-efficiency channel type bearing component comprises a bearing housing (1), a bearing gland (5), a pump shaft (7), a slinger (10), a slinger sleeve (11), and an oil collecting rack (12); the middle part of the pump shaft (7) is provided with the slinger sleeve (11), and the slinger (10) is arranged in the groove of the slinger sleeve (11); the outer part of the pump shaft (7) is assembled with the bearing housing (1) and the bearing gland (5); the inside of the bearing housing (1) is provided with the oil collecting rack (12); the oil collecting rack (12) is a reverse tapered shape with a certain slope; both ends of the oil collecting rack (12) are drilled with an oil collecting rack oil channel A (9) and an oil collecting rack oil channel B (13).
2. The high-efficiency channel type bearing component according to claim 1, characterized in that: a pair of angular contact bearings are installed on the driving end of the bearing housing (1), and are locked by a lock nut and a gasket; a deep groove ball bearing is installed on the non-driving end of the bearing housing (1).
3. The high-efficiency channel type bearing component according to claim 1, characterized in that: a driving side mechanical seal (14) is assembled on the non-driving side of the bearing housing (1); a non-driving side mechanical seal (8) is assembled on the bearing gland (5).
4. The high-efficiency channel type bearing component according to claim 1, characterized in that: the bearing housing (1) is processed with an oil return channel, which is a certain distance from the bottom of the bearing, which is beneficial to oil storage and ensures bearing lubrication; the bearing gland (5) is provided with an oil channel corresponding to the position of the oil return channel of the bearing housing (1), which guides the flow of lubricating oil back to the oil pool.
5. The high-efficiency channel type bearing component according to claim 1, characterized in that: an air release plug is arranged on the bearing housing (1) to balance the pressure difference between the inside and outside of the bearing component.
6. The high-efficiency channel type bearing component according to claim 1, characterized in that: a plurality of cooling fins (4) are arranged on the bearing housing (1).
7. The high-efficiency channel type bearing component according to claim 1, characterized in that: a pure oil mist interface A (2) is arranged on the bearing housing (1), and a pure oil mist interface B (6) is arranged on the bearing gland (5), which is convenient for the bearing component to adopt a pure oil mist lubrication scheme, and the lubricating oil is collected into the inner cavity of the bearing housing through the channel type oil channel.
8. The high-efficiency channel type bearing component according to claim 1, characterized in that: vibration test installation interfaces, integrated oil cup interfaces, cooling / heating winding pipe interface temperature sensor installation interfaces are arranged on both sides of the bearing housing (1).