CN215058926U

CN215058926U - Steam turbine bearing bush

Info

Publication number: CN215058926U
Application number: CN202121774895.6U
Authority: CN
Inventors: 林祖统; 余礼淳
Original assignee: Huzhou Runbo Environmental Protection Equipment Co ltd
Current assignee: Huzhou Runbo Environmental Protection Equipment Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2021-12-07
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a steam turbine axle bush has two upper shaft shell bodies and two lower bearing shell bodies, the same and symmetrical formula of specification of two upper shaft shell bodies distributes, the same and symmetrical formula of specification of two lower bearing shell bodies distributes, and two upper shaft shell bodies and two lower bearing shell bodies are annular array and distribute, offer the first counter sink that is used for assembling double-deck sphere pad round pin, the third counter sink that is used for assembling the second counter sink of spring and is used for assembling fastening screw on the extrados of upper shaft shell body, the oilhole has all been seted up to the tip of upper shaft shell body and the tip of lower bearing shell body, all is provided with the oil groove on the intrados of upper shaft shell body and the intrados of lower bearing shell body, offer the third counter sink that is used for assembling fastening screw on the extrados of lower bearing shell body. This steam turbine axle bush, structural design is reasonable, can keep the elastic assembly between axle bush and its peripheral casing, and then satisfies the normal use of steam turbine.

Description

Steam turbine bearing bush

Technical Field

The utility model belongs to the technical field of the technique of steam turbine spare part and specifically relates to a steam turbine axle bush.

Background

The bearing bush is a part of the sliding bearing contacted with the journal, is in a tile-shaped semi-cylindrical surface, is very smooth, is generally made of bronze, antifriction alloy and other wear-resistant materials, and can be made of wood, engineering plastics or rubber under special conditions; the bearing bush has an integral type and a split type, and the integral type bearing bush is generally called as a shaft sleeve; the integral bearing bush has two types of oil-free grooves and oil-containing grooves; the bearing bush and the shaft neck adopt clearance fit and generally do not rotate along with the shaft.

However, the existing turbine bearing bush on the market still has some defects in structural design, so that the assembly clearance between the bearing bush and the peripheral shell thereof cannot meet the normal use of the turbine, and the working efficiency of the turbine is seriously reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the defects in the prior art, the steam turbine bearing bush is provided, the structural design is reasonable, the elastic assembly between the bearing bush and the peripheral shell of the bearing bush can be kept, and the normal use of a steam turbine is further met.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a steam turbine axle bush, has two upper shaft shell bodies and two lower bearing shell bodies, the same and symmetrical formula of specification of two upper shaft shell bodies distributes, the same and symmetrical formula of specification of two lower bearing shell bodies distributes, and two upper shaft shell bodies and two lower bearing shell bodies are the annular array and distribute, set up the first counter sink hole that is used for assembling double-deck spherical pad round pin, the second counter sink hole that is used for assembling the spring and the third counter sink hole that is used for assembling fastening screw on the extrados of upper shaft shell body, the oilhole has all been seted up to the tip of upper shaft shell body and the tip of lower bearing shell body, all is provided with the oil groove on the intrados of upper shaft shell body and the intrados of lower bearing shell body, set up the third counter sink hole that is used for assembling fastening screw on the extrados of lower bearing shell body.

Further specifically, in the above technical solution, the supporting leg at the bottom of the spring is fixedly connected to the bottom of the second counterbore.

Further specifically, in the above technical solution, the center of the oil hole at the end of the upper bearing shell body and the center of the oil hole at the end of the lower bearing shell body are located on the same circle.

Further specifically, in the above technical solution, the number of the first counter sink on each upper bearing shell body is one, the number of the second counter sink is four, the number of the third counter sink is two, the first counter sink is located in the middle of the outer arc surface of the upper bearing shell body, the two third counter sinks are located on the front and rear sides of the first counter sink, wherein the two second counter sinks are located on the left side of the first counter sink, and the other two second counter sinks are located on the right side of the first counter sink.

Further specifically, in the above technical solution, the oil groove on the inner arc surface of the upper bearing shell body is located at the middle thereof and is parallel to the axis thereof, and the oil groove on the inner arc surface of the lower bearing shell body is located at the middle thereof and is parallel to the axis thereof.

The utility model has the advantages that: the utility model provides a pair of steam turbine axle bush, structural design is reasonable, can keep the elasticity assembly between axle bush and its peripheral casing, and then satisfies the normal use of steam turbine, can be convenient for extensively promote and use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the upper bushing body;

fig. 3 is a schematic structural view of the lower bearing shell body.

The reference numbers in the figures are: 1. an upper bearing shell body; 2. a lower bearing shell body; 3. a spherical pad pin; 4. a first counterbore; 5. a spring; 6. a second counterbore; 7. a third counterbore; 8. an oil hole; 9. an oil groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "one side", "the other side", "both sides", "between", "middle part", "upper end", "lower end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

See fig. 1, fig. 2 and fig. 3, the utility model discloses a steam turbine axle bush has two upper bearing shell bodies 1 and two lower bearing shell bodies 2, two upper bearing shell bodies 1's the same and symmetrical formula of specification distributes, two lower bearing shell bodies 2's the same and symmetrical formula of specification distributes, two upper bearing shell bodies 1 and two lower bearing shell bodies 2 are the annular array and distribute, offer the first counter sink 4 that is used for assembling double-deck sphere pad round pin 3 on the extrados of upper bearing shell body 1, the third counter sink 7 that is used for assembling fastening screw with the second counter sink 6 of spring 5. The double-layer spherical pad pin 3 is composed of an upper layer of spherical pad pin 3 and a lower layer of spherical pad pin 3 with the same specification, the upper part of the shell on the periphery of the bearing bush is also provided with a hole for assembling the double-layer spherical pad pin 3, the depth of the hole of the first countersunk hole 4 is smaller than the height of any spherical pad pin 3, and an operator aligns the hole on the shell and the first countersunk hole 4 on the outer arc surface of the upper bearing bush body 1 and then assembles the double-layer spherical pad pin 3 in the hole, so that the connection between the shell and the upper bearing bush body is realized. The hole that is used for assembling spring 5 is also seted up on the upper portion of the peripheral casing of axle bush, and operating personnel aims at hole on the casing and the second counter sink 6 on the outer cambered surface of upper bearing shell body 1, and the spring 5 of being convenient for corresponds in the via hole, and then realizes the elastic connection between upper bearing shell body 1 and the casing. The hole that is used for assembling fastening screw is also seted up on the outlying casing upper portion of axle bush, and operating personnel aims at the hole on the casing and the third counter sink 7 on the outer cambered surface of upper bearing shell body 1, and the twist of fastening screw is convenient for, and then realizes being connected between upper bearing shell body 1 and the casing. The tip of going up axle bush body 1 and the tip of lower axle bush body 2 has all seted up the oilhole 8, specifically, three oilhole 8 have been seted up to the tip of every upper axle bush body 1, and three oilhole 8 have been seted up to the tip of every lower axle bush body 2. The inner arc surface of the upper bearing shell body 1 and the inner arc surface of the lower bearing shell body 2 are both provided with oil grooves 9, and the outer arc surface of the lower bearing shell body 2 is provided with a third counter sink 7 for assembling fastening screws. In a similar way, the lower part of the shell on the periphery of the bearing bush is also provided with a hole for assembling a fastening screw, an operator aims at the hole on the shell and the third counter sink hole 7 on the outer arc surface of the lower bearing bush body 2, the fastening screw is conveniently screwed in, and then the connection between the lower bearing bush body 2 and the shell is realized.

Wherein, the supporting legs of spring 5 bottom and the bottom fixed connection of second counter sink 6, such structural design effectively avoids droing of spring 5, the operating personnel's of being convenient for operation. The center of the oil hole 8 at the end of the upper bearing shell body 1 and the center of the oil hole 8 at the end of the lower bearing shell body 2 are located on the same circle. The number of the first counter sink holes 4 on each upper bearing shell body 1 is one, the number of the second counter sink holes 6 is four, the number of the third counter sink holes 7 is two, the first counter sink holes 4 are located in the middle of the outer arc surface of the upper bearing shell body 1, the two third counter sink holes 7 are located on the front side and the rear side of the first counter sink holes 4, the two second counter sink holes 6 are located on the left side of the first counter sink holes 4, and the other two second counter sink holes 6 are located on the right side of the first counter sink holes 4. The oil groove 9 on the inner arc surface of the upper bearing shell body 1 is positioned at the middle part and is parallel to the axis thereof, and the oil groove 9 on the inner arc surface of the lower bearing shell body 2 is positioned at the middle part and is parallel to the axis thereof. The number of the third counter sink holes 7 on each lower bearing shell body 2 is two, and the two third counter sink holes 7 are located on the front side and the rear side of the middle position area of the outer arc surface of the lower bearing shell body 2.

This steam turbine axle bush, structural design is reasonable, can keep the elastic assembly between axle bush and its peripheral casing, and then satisfies the normal use of steam turbine, can be convenient for extensively promote and use.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A steam turbine bearing shell is characterized in that: comprises two upper bearing bush bodies (1) and two lower bearing bush bodies (2), the specifications of the two upper bearing bush bodies (1) are the same and are symmetrically distributed, the two lower bearing bush bodies (2) have the same specification and are symmetrically distributed, the two upper bearing bush bodies (1) and the two lower bearing bush bodies (2) are distributed in an annular array, the outer arc surface of the upper bearing shell body (1) is provided with a first counter bore (4) for assembling the double-layer spherical cushion pin (3), a second counter bore (6) for assembling the spring (5) and a third counter bore (7) for assembling the fastening screw, oil holes (8) are formed in the end portion of the upper bearing bush body (1) and the end portion of the lower bearing bush body (2), oil grooves (9) are formed in the inner arc surface of the upper bearing bush body (1) and the inner arc surface of the lower bearing bush body (2), and a third counter sink hole (7) for assembling a fastening screw is formed in the outer arc surface of the lower bearing bush body (2).

2. The steam turbine bearing shell according to claim 1, wherein: and the supporting legs at the bottom of the spring (5) are fixedly connected with the bottom of the second counter sink (6).

3. The steam turbine bearing shell according to claim 1, wherein: the center of the oil hole (8) at the end part of the upper bearing bush body (1) and the center of the oil hole (8) at the end part of the lower bearing bush body (2) are positioned on the same circle.

4. The steam turbine bearing shell according to claim 1, wherein: the quantity of first counter sink (4) is one on every upper bearing shell body (1), and the quantity of second counter sink (6) is four, and the quantity of third counter sink (7) is two, first counter sink (4) are located the intermediate position department of upper bearing shell body (1) extrados, and two third counter sink (7) are located the front and back both sides of first counter sink (4), and wherein two second counter sink (6) are located the left side of first counter sink (4), and two other second counter sink (6) are located the right side of first counter sink (4).

5. The steam turbine bearing shell according to claim 1, wherein: the oil groove (9) on the inner arc surface of the upper bearing shell body (1) is positioned in the middle of the upper bearing shell body and is parallel to the axis of the upper bearing shell body, and the oil groove (9) on the inner arc surface of the lower bearing shell body (2) is positioned in the middle of the lower bearing shell body and is parallel to the axis of the lower bearing shell body.