CN219327664U

CN219327664U - Pump shaft supporting assembly of turbine lubricating oil pump

Info

Publication number: CN219327664U
Application number: CN202320345587.4U
Authority: CN
Inventors: 金萍; 吴文理; 马军; 颜昌明
Original assignee: Sanhe Haishengda Technology Co ltd
Current assignee: Sanhe Haishengda Technology Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-07-11
Anticipated expiration: 2033-02-28

Abstract

The application provides a support assembly, in particular to a turbine lubricating oil pump shaft support assembly, which comprises a lubricating oil pump body, wherein a pump shaft is arranged at the front side of the lubricating oil pump body, and the turbine lubricating oil pump further comprises support components, wherein the support components are arranged at the front end and the rear end of the pump shaft; the heat dissipation piece is arranged on the surface of the pump shaft. According to the utility model, the first support bearing, the second support bearing and the pump shaft are connected by the elastic piece, so that the pump shaft can be supported, however, the elastic piece is made of expanded graphite, and the elastic piece has the advantages of high rebound resilience, high temperature resistance and small friction coefficient, so that the tightness of the connection between the first support bearing and the pump shaft and the connection between the first support bearing and the pump shaft are ensured, meanwhile, the friction on the surface of the pump shaft can be reduced, the running temperature of the pump shaft is reduced, and meanwhile, the surface of the pump shaft is provided with the grooves of a fan blade structure, so that heat dissipation wind flow can be generated when the pump shaft runs, overheating is avoided, and the service life of the pump shaft is prolonged.

Description

Pump shaft supporting assembly of turbine lubricating oil pump

Technical Field

The disclosure relates to the technical field of oil pumps, in particular to a pump shaft support assembly of a turbine lubricating oil pump.

Background

The turbine lubricating oil system provides lubricating and cooling oil for the turbine, and ensures normal start, stop and operation of the unit, wherein the normal operation of the turbine lubricating oil pump is the guarantee of safe and reliable operation of the turbine unit.

The prior authorized common number is CN206191240U, and discloses a pump shaft support assembly of a vertical lubricating oil pump, which comprises a pump shaft, an upper bearing chamber and a lower bearing chamber which are positioned at two ends of the pump shaft, wherein the pump shaft penetrates through the upper bearing chamber and the lower bearing chamber; the cylindrical roller bearing tightly assembled with the upper bearing chamber and the radial ball bearing tightly sleeved on the pump shaft are sequentially packaged in the upper bearing chamber from top to bottom; the balance bin is arranged below the upper bearing chamber and comprises a bin body fixed in the connecting pipe and surrounding the pump shaft for a circle, and a cover plate packaged at an upper port of the bin body, and a balance drum of the dimensionally stable pump shaft is arranged in the bin body; the cylindrical roller bearing which is tightly assembled with the lower bearing chamber and sleeved at the end part of the pump shaft and the oil cavity which is encapsulated with lubricating oil are sequentially arranged in the lower bearing chamber from top to bottom.

In the above-mentioned technique, through being provided with cylindrical roller bearing, radial ball bearing and balanced drum respectively in upper and lower bearing room for whole pump shaft has the noise little, advantages such as long-time operation is steady, but this pump shaft is direct with cylindrical roller bearing, radial ball bearing connects, when rotating, can not guarantee its leakproofness of connection, and under long-time operation, can produce more friction between pump shaft and cylindrical roller bearing, the radial ball bearing, make the temperature of its surface rise, the damage between easy pump shaft 1 and cylindrical roller bearing, radial ball bearing, thereby reduce the length of time of use of whole lubricating oil pump, do not set up any heat radiation structure on it yet simultaneously, generally just need in time to its inside injection lubricating oil reaches refrigerated effect, but if the injection lubricating oil is untimely, lead to the pump shaft overheated easily, consequently also can reduce its life. In view of this, we propose a turbine lube pump shaft support assembly.

Disclosure of Invention

In view of the foregoing deficiencies or inadequacies of the prior art, it is desirable to provide a turbine lube pump shaft support assembly.

In a first aspect, the present application provides a turbine lube pump shaft support assembly comprising:

the lubricating oil pump comprises a lubricating oil pump body, wherein a pump shaft is arranged at the front side of the lubricating oil pump body;

the supporting parts are arranged at the front end and the rear end of the pump shaft, are provided with elastic parts, are rotationally connected with the pump shaft through the elastic parts and are used for supporting the pump shaft during rotation;

the heat dissipation piece is arranged on the surface of the pump shaft and used for dissipating heat during operation of the pump shaft.

According to the technical scheme that this application embodiment provided, the supporting part includes two supporting bearing one and two supporting bearing two, and two supporting bearing one set up in the pump shaft rear end, and two supporting bearing one fixed mounting are on the lubricating oil pump body, are provided with a plurality of reinforcing bolt one between two supporting bearing one, and connect through reinforcing bolt one between two supporting bearing one.

According to the technical scheme that this application embodiment provided, two support bearing two sets up in the pump shaft front end, and two support bearing two fixed mounting are provided with a plurality of reinforcing bolt two between two support bearing two on the lubricating oil pump body, and connect through reinforcing bolt two between two support bearing two.

According to the technical scheme that this application embodiment provided, the elastic component comprises four rings, four the ring outer wall respectively with two support bearing one and two support bearing two middle part fixed connection, and four the ring inner wall all overlaps and locates on the pump shaft to with pump shaft swivelling joint.

According to the technical scheme provided by the embodiment of the application, the heat dissipation piece is formed by a plurality of grooves, the grooves are uniformly distributed along the surface of the pump shaft, and the grooves are all in a fan blade-shaped structure.

To sum up, this technical scheme specifically discloses turbine lubricating oil pump shaft supporting component, utilize the elastic component to accomplish the connection of supporting bearing one, supporting bearing two and pump shaft, make the pump shaft can obtain the support, and the elastic component adopts expanded graphite to make, have that the resilience is big, high temperature resistant and coefficient of friction are little, not only can guarantee supporting bearing one and supporting bearing two and pump shaft connection's leakproofness, still reducible pump shaft surface's friction simultaneously, reduce its operating temperature, set up the recess of flabellum structure simultaneously at the pump shaft surface, make the pump shaft can produce the heat dissipation wind stream when the operation, avoid overheated, and then improve its life.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:

fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is an exploded view of the pump shaft of the present utility model.

FIG. 3 is a cross-sectional view of a pump shaft of the present utility model.

Fig. 4 is an exploded view of the support bearing of the present utility model.

Reference numerals in the drawings: 1. a lubricating oil pump body; 11. a pump shaft; 111. a groove; 12. a first support bearing; 121. an elastic member; 13. and supporting the second bearing.

Detailed Description

The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

Referring to fig. 1 to 4, the turbine lubricant pump shaft support assembly includes a lubricant pump body 1, and a pump shaft 11 is disposed at a front side of the lubricant pump body 1.

The supporting part, supporting part sets up both ends around pump shaft 11, and is provided with elastic component 121 on the supporting part to through elastic component 121 and pump shaft 11 swivelling joint, be used for the support when pump shaft 11 swivelling, the supporting part includes: the two support bearings I12 and the two support bearings II 13 are arranged at the rear end of the pump shaft 11, the two support bearings I12 are fixedly arranged on the lubricating oil pump body 1, a plurality of first reinforcing bolts are arranged between the two support bearings I12, the two support bearings I12 are connected through the first reinforcing bolts, the two support bearings II 13 are arranged at the front end of the pump shaft 11, the two support bearings II 13 are fixedly arranged on the lubricating oil pump body 1, a plurality of second reinforcing bolts are arranged between the two support bearings II 13, the two support bearings II 13 are connected through the second reinforcing bolts, the elastic piece 121 is composed of four circular rings, the outer walls of the four circular rings are fixedly connected with the middle parts of the two support bearings I12 and the two support bearings II 13 respectively, and the inner walls of the four circular rings are sleeved on the pump shaft 11 and are rotatably connected with the pump shaft 11.

It is worth to supplement that each ring is made of expanded graphite, and has the advantages of high temperature resistance, small friction coefficient and high rebound resilience.

In the prior art, the cylindrical roller bearings, the radial ball bearings and the balance drum are respectively arranged in the upper bearing chamber and the lower bearing chamber, so that the whole pump shaft 11 has the advantages of low noise, stable long-time operation and the like, but the pump shaft 11 is directly connected with the cylindrical roller bearings and the radial ball bearings, the connection tightness cannot be ensured during rotation, and more friction is generated between the pump shaft 11 and the cylindrical roller bearings and between the pump shaft 11 and the radial ball bearings under long-time operation, so that the temperature of the surface of the pump shaft is increased, and the pump shaft 11 and the cylindrical roller bearings and the radial ball bearings are easy to be damaged, so that the service time of the whole lubricating oil pump is reduced; in the device, the middle parts of the two first support bearings 12 and the two second support bearings 13 are respectively provided with a circular ring, and then the circular rings are connected with the pump shaft 11, and the circular rings are made of expanded graphite, so that the device has the advantage of high rebound resilience, can ensure the tightness of the connection of the two first support bearings 12, the two second support bearings 13 and the pump shaft 11, and simultaneously has the advantages of high temperature resistance and small friction coefficient, can reduce the friction of the surface of the pump shaft 11 and the running temperature of the pump shaft 11, thereby reducing the abrasion among the pump shaft 11, the two first support bearings 12 and the two second support bearings 13, and further prolonging the service life of the whole lubricating oil pump; and the two first support bearings 12 and the two second support bearings 13 are respectively connected through the first reinforcing bolt and the second reinforcing bolt, so that the strength of the support connection can be enhanced.

The heat dissipation piece is arranged on the surface of the pump shaft 11 and used for dissipating heat during operation of the pump shaft 11, the heat dissipation piece is composed of a plurality of grooves 111, the plurality of grooves 111 are uniformly distributed along the surface of the pump shaft 11, and the plurality of grooves 111 are of a fan blade-shaped structure.

In the prior art, more friction is generated between the pump shaft 11 and the cylindrical roller bearing and between the pump shaft 11 and the radial ball bearing, and when certain heat is generated, no heat dissipation structure is arranged on the pump shaft, and lubricating oil is usually required to be timely injected into the pump shaft to achieve the cooling effect, but if the lubricating oil is not timely injected, the pump shaft 11 is easy to overheat, and the service life of the pump shaft is reduced; in this device, through being provided with a plurality of recess 111 on pump shaft 11 surface, and a plurality of recess 111 all is flabellum shape structure, when pump shaft 11 is rotating, can make the space formation heat dissipation wind stream of lubricating oil pump to can prevent pump shaft 11 overheat, improve its life.

When the lubricating pump is specifically used, firstly, the middle parts of the first support bearings 12 and the second support bearings 13 are respectively provided with a circular ring, the circular rings are connected with the pump shaft 11 and can be used for supporting the pump shaft 11, and the circular rings are made of expanded graphite and have the advantages of high rebound resilience, high temperature resistance and small friction coefficient, so that the tightness of the connection of the first support bearings 12, the second support bearings 13 and the pump shaft 11 is ensured, the friction of the surface of the pump shaft 11 is reduced, the running temperature of the pump shaft is reduced, a plurality of grooves 111 are formed in the surface of the pump shaft 11, and the grooves 111 are all in a fan-shaped structure, so that gaps of the lubricating oil pump can form heat dissipation air flow when the pump shaft 11 rotates, and the service life of the pump shaft 11 is prolonged.

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the utility model. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims

1. Turbine lubrication pump shaft support assembly, its characterized in that includes:

the lubricating oil pump comprises a lubricating oil pump body (1), wherein a pump shaft (11) is arranged at the front side of the lubricating oil pump body (1);

the support component is arranged at the front end and the rear end of the pump shaft (11), is provided with an elastic piece (121), and is rotationally connected with the pump shaft (11) through the elastic piece (121) and used for supporting the pump shaft (11) during rotation;

the heat dissipation piece is arranged on the surface of the pump shaft (11) and is used for dissipating heat during operation of the pump shaft (11).

2. The turbine lubrication pump shaft support assembly according to claim 1, wherein the support component comprises two support bearings one (12) and two support bearings two (13), the two support bearings one (12) are arranged at the rear end of the pump shaft (11), the two support bearings one (12) are fixedly arranged on the lubrication pump body (1), a plurality of first reinforcing bolts are arranged between the two support bearings one (12), and the two support bearings one (12) are connected through the first reinforcing bolts.

3. The turbine lubrication pump shaft support assembly according to claim 2, wherein two support bearing two (13) are arranged at the front end of the pump shaft (11), the two support bearing two (13) are fixedly mounted on the lubrication pump body (1), a plurality of reinforcing bolts two are arranged between the two support bearing two (13), and the two support bearing two (13) are connected through the reinforcing bolts two.

4. The turbine lubrication pump shaft support assembly according to claim 1, wherein the elastic piece (121) is formed by four circular rings, the outer walls of the four circular rings are respectively and fixedly connected with the middle parts of the two first support bearings (12) and the two second support bearings (13), and the inner walls of the four circular rings are respectively sleeved on the pump shaft (11) and are rotatably connected with the pump shaft (11).

5. The turbine lubrication pump shaft support assembly of claim 1, wherein the heat dissipation member is formed by a plurality of grooves (111), the plurality of grooves (111) are equally distributed along the surface of the pump shaft (11), and the plurality of grooves (111) are all in a fan-blade structure.