Locking and strengthening device for internal assembly of compressor rotor

Abstract

The utility model discloses a compressor rotor internal assembly locking and strengthening device, which relates to the compressor rotor technology field, and comprises a first rotor shaft, the internal center of the first rotor shaft is rotatably connected with a central shaft, and one end of the internal of the first rotor shaft is fixedly connected with a plurality of auxiliary slide rails. One end of the inner portion of the first rotor shaft is connected with a plurality of connecting pieces in a sliding mode at the same time, one end of the inner wall of the second rotor shaft is provided with a plurality of connecting inserting grooves at the same time, and the outer wall of one end of the center shaft is provided with plane threads. The impeller is fixed on the outer walls of the first rotor shaft and the second rotor shaft, so that the connection between the first rotor shaft and the second rotor shaft and the impeller is further enhanced, and meanwhile, the situation that cracks are generated at welding joints of the first rotor shaft and the second rotor shaft and the impeller due to stress concentration at the welding positions in a traditional connection mode is avoided; and finally, the stability of connection between the first rotor shaft and the second rotor shaft and the impeller is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor rotor technical field, specifically is a kind of compressor rotor internal assembly anti-loose and reinforcing device. BACKGROUND

[0002] Compressor rotor is composed of main shaft, impeller, balance disc and multiple components, these components are tightly assembled on shaft by red cover etc., rotate with shaft at high speed, in addition, rotor also has specific technical requirements, such as the interference of impeller and shaft needs to be moderate, in general, the design and manufacturing precision of compressor rotor has important influence on the performance and life of compressor.

[0003] In the installation process of compressor rotor, the common practice is to directly sleeve impeller on the outer wall of rotor shaft, after adjusting position, fixed using welding etc., however, this welding mode not only has high technical requirements to operator, and when equipment starts and stops, due to the uneven thermal expansion and shrinkage of welding place, impeller and rotor shaft, stress concentration at welding joint, lead to crack at welding joint, this crack gradually expands and spreads with time, eventually lead to the connection between impeller and rotor shaft become more and more unstable, and loose, in view of this, we provide a kind of compressor rotor internal assembly anti-loose and reinforcing device. SUMMARY

[0004] The utility model discloses a kind of compressor rotor internal assembly anti-loose and reinforcing device to make up for the deficiency of prior art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of compressor rotor internal assembly anti-loose and reinforcing device, including first rotor shaft, the outer wall one end of the first rotor shaft is connected with second rotor shaft, and the outer wall of first rotor shaft and second rotor shaft is provided with multiple limit guide rails, the outer wall one end of the first rotor shaft is connected with impeller, and the outer wall of first rotor shaft and second rotor shaft is equipped with multiple positioning pins, the positioning pin is inserted and connected with positioning bolt, the central axis is rotationally connected in the first rotor shaft inside center, and the first rotor shaft inside one end is fixedly connected with multiple auxiliary sliding rails, the first rotor shaft inside one end is simultaneously connected with multiple connecting pieces, the inner wall one end of the second rotor shaft is simultaneously provided with multiple connecting slots, the outer wall one end of the central axis is equipped with plane thread.

[0006] The outer wall one end of the positioning pin is connected with the outer wall one end of impeller, and the outer wall one end of positioning pin is slidably connected with the inner side of impeller, the outer wall one side of the limit guide rail is connected with the inner wall one side of impeller, and the inner side of impeller is slidably connected with the outer wall one side of limit guide rail.

[0007] The positioning bolt outer wall center is connected with the positioning pin inner center and the impeller inner one end at the same time, and the positioning bolt is rotatably connected with the positioning pin inner center and the impeller inner one end through the outer wall thread.

[0008] The first rotor shaft one end outer wall is connected with the second rotor shaft inner center, and the first rotor shaft outer wall one end is slidably connected with the second rotor shaft inner center.

[0009] The auxiliary slide rail one end outer wall is connected with the connecting piece outer wall one side, and the auxiliary slide rail outer wall one side is slidably connected with the connecting piece inner side.

[0010] The plane thread is mainly in the form of annual ring spiral, and the center shaft one end outer wall is rotatably connected with the connecting piece one side outer wall through the plane thread.

[0011] Compared with the prior art, the compressor rotor internal assembly anti-loosening and strengthening device has the following beneficial effects:

[0012] First, the first rotor shaft and the second rotor shaft are respectively inserted into the impeller inner center through the positioning pin and the limiting guide rail, and the first rotor shaft and the second rotor shaft are preliminarily fixed with the impeller through the thread provided on the outer wall of the positioning bolt, so that loosening between the first rotor shaft, the second rotor shaft and the impeller is prevented, and different step rotation is avoided.

[0013] Second, the center shaft is rotated, the connecting piece is moved along the auxiliary slide rail outer wall into the connecting slot inner part through the engagement of the plane thread and the one side outer wall of the connecting piece, and finally the impeller is fixed on the first rotor shaft and the second rotor shaft outer wall through the embedding of the connecting piece into the connecting slot inner part, so that the connection between the first rotor shaft, the second rotor shaft and the impeller is further strengthened, stress concentration in the welding part in the traditional connection mode is avoided, cracks are avoided at the welding joint of the first rotor shaft, the second rotor shaft and the impeller, and the stability of the connection between the first rotor shaft, the second rotor shaft and the impeller is finally affected.

[0014] Other advantages, objects and features of the present application will be set forth in part in the following specification taken in conjunction with the accompanying drawings, and in part will become apparent to those skilled in the art upon examination of the following specification or can be learned from practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the present application;

[0016] Figure 2The utility model discloses a partial section of impeller and the partial and the three -dimensional structure schematic diagram of the first rotor shaft and the second rotor shaft,

[0017] Figure 3 The utility model discloses a partial section of impeller and the partial and the three -dimensional structure schematic diagram of the first rotor shaft and the second rotor shaft,

[0018] Figure 4 The utility model discloses a partial section of impeller and the partial and the three -dimensional structure schematic diagram of the first rotor shaft and the second rotor shaft,

[0019] Figure 5 The utility model discloses a partial section of impeller and the partial and the three -dimensional structure schematic diagram of the first rotor shaft and the second rotor shaft,

[0020] Figure 6 The utility model discloses a partial section of impeller and the partial and the three -dimensional structure schematic diagram of the first rotor shaft and the second rotor shaft.

[0021] Figure: 1, the first rotor shaft, 2, the second rotor shaft, 201, the limit guide rail, 202, the impeller, 203, the positioning pin, 204, the positioning bolt, 3, the center axle, 301, the auxiliary slide rail, 302, the connecting piece, 303, the connecting slot, 304, the plane thread. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the range of protection of the utility model.

[0023] As Figures 1-6 The utility model provides a kind of technical scheme: a kind of compressor rotor internal assembly anti-loose and reinforcing device, including first rotor shaft 1, first rotor shaft 1 outer wall one end is connected with second rotor shaft 2, and first rotor shaft 1 and second rotor shaft 2 outer wall are all provided with multiple limit guide rails 201, first rotor shaft 1 outer wall one end is connected with impeller 202, and first rotor shaft 1 and second rotor shaft 2 outer wall are all provided with multiple positioning pins 203, positioning pin 203 is inserted with the positioning bolt 204 inside, first rotor shaft 1 inside center rotation is connected with center axle 3, and first rotor shaft 1 inside one end is fixedly connected with multiple auxiliary slide rails 301, first rotor shaft 1 inside one end is simultaneously connected with multiple connecting pieces 302, second rotor shaft 2 inner wall one end is simultaneously provided with multiple connecting slots 303, and center axle 3 one end outer wall is provided with plane thread 304.

[0024] The first rotor shaft 1 and the second rotor shaft 2 are inserted into the inner center of the impeller 202 by the positioning pin 203 and the limiting guide rail 201 respectively, and the first rotor shaft 1 and the second rotor shaft 2 are preliminarily fixed with the impeller 202 by the threads provided on the outer wall of the positioning bolt 204, the center shaft 3 is rotated, the connection piece 302 is moved along the outer wall of the auxiliary slide rail 301 to the inside of the connection slot 303 by the engagement of the plane thread 304 and the outer wall of one side of the connection piece 302, and finally the impeller 202 is fixed on the outer wall of the first rotor shaft 1 and the second rotor shaft 2 by embedding the connection piece 302 into the inside of the connection slot 303, which further strengthens the connection between the first rotor shaft 1 and the second rotor shaft 2 and the impeller 202, and at the same time avoids the cracks on the welded joints of the first rotor shaft 1 and the second rotor shaft 2 and the impeller 202 caused by stress concentration in the traditional connection mode, and finally affects the stability of the connection between the first rotor shaft 1 and the second rotor shaft 2 and the impeller 202.

[0025] As shown in Figures 1-4 , one end of the outer wall of the positioning pin 203 is connected with one end of the outer wall of the impeller 202, and the outer wall of the positioning pin 203 is slidably connected with the inner side of the impeller 202, one side of the outer wall of the limiting guide rail 201 is connected with one side of the inner wall of the impeller 202, and the inner side of the impeller 202 is slidably connected with one side of the outer wall of the limiting guide rail 201, the rotation between the first rotor shaft 1 and the second rotor shaft 2 and the impeller 202 is synchronously limited by the positioning pin 203 and the limiting guide rail 201, so as to avoid the out-of-sync rotation between the first rotor shaft 1 and the second rotor shaft 2 and the impeller 202.

[0026] As shown in , the outer wall center of the positioning bolt 204 is connected with the inner center of the positioning pin 203 and one end of the inner wall of the impeller 202, and the outer wall thread of the positioning bolt 204 is rotatably connected with the inner center of the positioning pin 203 and one end of the inner wall of the impeller 202, so that the impeller 202 can be preliminarily fixed on the outer wall of the first rotor shaft 1 and the second rotor shaft 2 by the positioning bolt 204.

[0027] Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown in , one end of the outer wall of the first rotor shaft 1 is connected with the inner center of the second rotor shaft 2, and the outer wall of the first rotor shaft 1 is slidably connected with the inner center of the second rotor shaft 2, so that the first rotor shaft 1 can be smoothly inserted into the inner center of the second rotor shaft 2.

[0028] As shown in

[0029] The outer wall of one side of the connecting piece 302 extends to the inside of the connecting slot 303, and the connecting piece 302 and the connecting slot 303 correspond to each other, so that the first rotor shaft 1 and the second rotor shaft 2 can be fixedly connected by embedding the connecting piece 302 into the connecting slot 303.

[0030] The plane thread 304 is mainly in the form of annual ring spiral, and the outer wall of one end of the central shaft 3 is rotationally connected with the outer wall of one side of the connecting piece 302 through the plane thread 304, so that when the central shaft 3 is rotated, the plane thread 304 provided on the outer wall of one end of the central shaft 3 can be used to push the connecting piece 302 to move along the outer wall of the auxiliary slide rail 301, and finally embedded into the inside of the connecting slot 303.

[0031] Working principle: the positioning pin 203 and the limiting guide rail 201 are used to limit the rotation between the first rotor shaft 1, the second rotor shaft 2 and the impeller 202 synchronously, so that the rotation between the first rotor shaft 1, the second rotor shaft 2 and the impeller 202 is not out of sync, the impeller 202 can be preliminarily fixed on the outer wall of the first rotor shaft 1 and the second rotor shaft 2 by the positioning bolt 204, the first rotor shaft 1 can be smoothly inserted into the inside of the second rotor shaft 2, the movement track of the connecting piece 302 in the first rotor shaft 1 can be limited by the outer wall of the auxiliary slide rail 301, the first rotor shaft 1 and the second rotor shaft 2 can be fixedly connected by embedding the connecting piece 302 into the connecting slot 303, and when the central shaft 3 is rotated, the plane thread 304 provided on the outer wall of one end of the central shaft 3 can be used to push the connecting piece 302 to move along the outer wall of the auxiliary slide rail 301, and finally embedded into the inside of the connecting slot 303.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A compressor rotor internal assembly anti-loosening and strengthening device, comprising a first rotor shaft (1), characterized in that: The outer wall of the first rotor shaft (1) is connected with the second rotor shaft (2) at one end, and the outer walls of the first rotor shaft (1) and the second rotor shaft (2) are provided with a plurality of limiting guide rails (201), the outer wall of the first rotor shaft (1) is connected with the impeller (202) at one end, and the outer walls of the first rotor shaft (1) and the second rotor shaft (2) are provided with a plurality of positioning pins (203), the positioning pin (203) is connected with the positioning bolt (204) inside, the central shaft (3) is rotatably connected in the first rotor shaft (1), and a plurality of auxiliary sliding rails (301) are fixedly connected to one end of the first rotor shaft (1), a plurality of connecting pieces (302) are slidably connected to one end of the first rotor shaft (1), a plurality of connecting slots (303) are formed in the inner wall of the second rotor shaft (2), and the outer wall of one end of the central shaft (3) is provided with a plane thread (304).

2. A compressor rotor anti-looseness and reinforcement device inside assembly according to claim 1, characterized in that: The outer wall of one end of the positioning pin (203) is connected with the outer wall of one end of the impeller (202), and the outer wall of one end of the positioning pin (203) is slidably connected with the inner side of the impeller (202).

3. A compressor rotor anti-looseness and reinforcement device inside assembly according to claim 2, characterized in that: The outer wall of one side of the limiting guide rail (201) is connected with the inner wall of one side of the impeller (202), and the inner side of the impeller (202) is slidably connected with the outer wall of one side of the limiting guide rail (201).

4. A compressor rotor anti-looseness and reinforcement device inside assembly according to claim 1, characterized in that: The outer wall of the positioning bolt (204) is connected with the inner center of the positioning pin (203) and the inner end of the impeller (202), and the positioning bolt (204) is rotatably connected with the inner center of the positioning pin (203) and the inner end of the impeller (202) through the threads on the outer wall.

5. A compressor rotor anti-looseness and reinforcement device inside assembly according to claim 1, characterized in that: The outer wall of one end of the first rotor shaft (1) is connected with the inner center of the second rotor shaft (2), and the outer wall of one end of the first rotor shaft (1) is slidably connected with the inner center of the second rotor shaft (2).

6. A compressor rotor anti-looseness and reinforcement device inside assembly according to claim 1, characterized in that: The outer wall of one end of the auxiliary sliding rail (301) is connected with the outer wall of one side of the connecting piece (302), and the outer wall of one side of the auxiliary sliding rail (301) is slidably connected with the inner side of the connecting piece (302).

7. A compressor rotor anti-looseness and reinforcement device inside assembly according to claim 6, characterized in that: The outer wall of one side of the connecting piece (302) extends into the connecting slot (303), and the connecting piece (302) corresponds to the connecting slot (303).

8. A compressor rotor anti-looseness and reinforcement device inside assembly according to claim 1, characterized in that: The plane thread (304) is mainly in the form of annual ring spiral, and the outer wall of one end of the central shaft (3) is rotatably connected with the outer wall of one side of the connecting piece (302) through the plane thread (304).

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