CN221328700U

CN221328700U - Bearing-free generator

Info

Publication number: CN221328700U
Application number: CN202323171355.0U
Authority: CN
Inventors: 董日京; 赵建华; 朱明�; 曾龙伟
Original assignee: Zhenjiang Zhongchuan Xiandai Generating Equipment Co ltd
Current assignee: Zhenjiang Zhongchuan Xiandai Generating Equipment Co ltd
Filing date: 2023-11-23
Publication date: 2024-07-12
Anticipated expiration: 2033-11-23

Abstract

The utility model discloses a bearingless generator, which comprises a rotor, a base sleeved on the outer side of the rotor, end covers connected to the left side and the right side of the base, a sealing ring connected with the outer side wall of the end cover, and a supporting component arranged on the outer side wall of the end cover, wherein the sealing ring is arranged on the outer side wall of the end cover; the support assembly comprises two support frames welded on the end cover and a support ring arranged at the top of the support frames and used for supporting the rotor. According to the utility model, the position of the supporting ring is adjusted by rotating the adjusting bolt, so that the centering of the rotor and the stator in the machine base is completed, and the centering mode is simple, quick and high in accuracy; further, dynamic sealing between the rotor and the end cover is realized through the sealing ring, the rotor and the end cover are fixed by matching with the fixing screw, the left and right movement of the rotor during transportation of the machine base is avoided, the stable transportation of the rotor to an installation site along with the machine base is ensured, the rotor is not required to be centered on site, and the assembly efficiency of the generator body is improved.

Description

Bearing-free generator

Technical Field

The utility model relates to a bearingless generator.

Background

The bearingless generator is a motor without the support of the traditional mechanical bearing, can not independently operate, needs to connect two ends of a rotor to shaft sections of other devices with supports through flanges to operate, is an innovative motor, and has the advantages of long service life, no maintenance, sterility, no pollution and the like;

However, since the bearingless generator has no support bearing, the stator and the rotor cannot be installed and fixed in a factory during assembly and can only be independently sent to site for installation, and site installation conditions are generally poor, so that the position of the rotor is difficult to quickly position, the centering period of the rotor is long, the precision is poor, and the assembly efficiency of the generator is affected.

Therefore, it is necessary to invent a bearingless generator to solve the above problems.

Disclosure of utility model

Object of the utility model

The utility model aims to provide a bearingless generator, the position of a supporting ring is adjusted by rotating an adjusting bolt, so that the centering of a rotor and a stator in a machine base is completed, and the centering mode is simple, quick and high in accuracy; further, through the labyrinth structure of the inner ring of the sealing ring, dynamic sealing between the rotor and the end cover can be realized, and then the rotor and the end cover are fixed by matching with the fixing screw rod, so that left and right movement of the rotor during transportation of the machine base can be avoided, the stable transportation of the rotor to an installation site along with the machine base is ensured, the rotor is not required to be centered on site, and the assembly efficiency of the generator body is improved, so that the defects in the technology are overcome.

(II) technical scheme

In order to achieve the above object, the present utility model provides the following technical solutions: the bearingless generator comprises a rotor, a base sleeved on the outer side of the rotor, end covers connected to the left side and the right side of the base, sealing rings connected with the outer side walls of the end covers, and a supporting component arranged on the outer side walls of the end covers;

The support assembly comprises two support frames welded on the end cover, a support ring arranged at the top of the support frames and used for supporting the rotor, and a plurality of adjusting pieces arranged on the support frames, and the rotor is centered with the stator in the machine base through the adjusting pieces.

Preferably, the two end covers are respectively fixed on the end plates at the left side and the right side of the machine base through spigot matching, and the two sealing rings are respectively clamped on the two end covers through spigot matching.

Preferably, a plurality of connecting bolts are circularly arranged on the sealing ring, and the threaded segments of the connecting bolts extend into the end cover.

Preferably, the sealing ring is made of lead alloy material, and the inner wall of the sealing ring is provided with a labyrinth structure.

Preferably, the labyrinth structure is formed by a plurality of channels formed on the inner wall of the sealing ring and matched with the inner wall of the sealing ring.

Preferably, flanges are further installed at two ends of the rotor, a plurality of fixing screws are installed on one side wall, far away from the base, of the flanges, and thread sections of the fixing screws extend to the inner portion of the side wall of the end cover.

Preferably, the connection parts of each fixing screw and two side walls of the flange are sleeved with check rings, and the connection parts of each fixing screw and the inner wall of the flange are sleeved with fastening nuts.

Preferably, the adjusting piece is set as an adjusting bolt, the rotor is centered with the stator in the machine base through the screwing distance of the adjusting piece, the end cover is composed of an upper semicircular plate and a lower semicircular plate which are symmetrically distributed, and the sealing ring is composed of an upper semicircular ring and a lower semicircular ring which are symmetrically distributed.

Preferably, the support frame is further provided with a plurality of locking bolts for locking the support ring, and the locking bolts and the adjusting piece are distributed in a dislocation mode.

Compared with the prior art, the technical scheme of the utility model has the beneficial effects that:

1. according to the utility model, the screwing distance of the adjusting bolt is changed by screwing the adjusting bolt, so that the position of the supporting ring is adjusted, the uniform gap between the inner circle of the sealing ring and the outer side of the rotor is realized rapidly, and the centering of the rotor and the stator in the machine base is completed, so that the centering mode is simple and rapid, and the accuracy is high;

2. Through the labyrinth structure of the sealing ring inner ring, dynamic sealing between the rotor and the end cover can be realized, and then the rotor and the end cover are fixed by matching with the fixing screw, so that left and right movement of the rotor during transportation of the machine base can be avoided, stable transportation of the rotor to an installation site along with the machine base is ensured, centering of the rotor on the site is not required, and the assembly efficiency of the generator body is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

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

FIG. 2 is a left side view of the present utility model;

FIG. 3 is an enlarged view of the portion A of FIG. 1 in accordance with the present utility model;

Fig. 4 is an enlarged view of the B part structure of fig. 1 according to the present utility model.

Reference numerals illustrate:

1 rotor, 2 frame, 3 end cover, 4 sealing rings, 51 support frame, 52 support ring, 53 adjusting bolt, 6 connecting bolt, 7 labyrinth structure, 8 flange, 9 fixing screw, 10 retaining ring, 11 fastening nut, 12 locking bolt.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The utility model provides a bearingless generator as shown in figures 1-4, which comprises a rotor 1, a base 2 sleeved on the outer side of the rotor 1, end covers 3 connected to the left side and the right side of the base 2, a sealing ring 4 connected with the outer side wall of the end cover 3, and a supporting component arranged on the outer side wall of the end cover 3;

the supporting component comprises two supporting frames 51 welded on the end cover 3, a supporting ring 52 arranged at the top of the supporting frames 51 and used for supporting the rotor 1, and a plurality of adjusting pieces arranged on the supporting frames 51, wherein the rotor 1 is centered with a stator in the machine base 2 through the adjusting pieces.

In one embodiment, two end covers 3 are all fixed respectively on the end plates of the left and right sides of the machine base 2 through the spigot cooperation, just end cover 3 comprises two semicircle boards of symmetric distribution about, and the end cover 3 of being convenient for is fixedly connected with machine base 2, two sealing ring 4 is all block respectively on two end covers 3 through the spigot cooperation, circular exhibition has a plurality of connecting bolts 6 on the sealing ring 4, connecting bolt 6 screw thread section extends to the end cover 3 inside, just sealing ring 4 comprises two semicircle rings of symmetric distribution about, and the installation of sealing ring 4 of being convenient for is fixed.

In one embodiment, the sealing ring 4 is made of lead alloy material, the hardness of the sealing ring 4 made of lead alloy material is lower, scratch damage is not caused to the rotor 1 when the sealing ring is contacted with the rotor 1, the inner wall of the sealing ring 4 is provided with a labyrinth structure 7, the labyrinth structure 7 is formed by a plurality of channels formed in the inner wall of the sealing ring 4 and mutually matched with the inner wall of the sealing ring 4, dynamic sealing of the rotor 1 and the end cover 3 can be realized, and the size of the rotor 1 and the stator when the rotor 1 is centered can be known by measuring the gap between the inner circle of the sealing ring 4 and the rotor 1 by using a clearance gauge, so that the sealing ring is simple and convenient to use;

The labyrinth structure 7 is a common sealing structure, and is widely applied to compressor shaft sealing devices of air, nitrogen, carbon dioxide and other nontoxic and harmful gases, and the labyrinth type sealing structure has various structural forms, and more structures are adopted in the compressor: overall zigzag type, mosaic zigzag type, smooth type, step type and honeycomb type; wherein, the whole zigzag type sealing body is provided with sealing teeth and the shaft is also provided with grooves; the smooth type can be that the shaft is made into an optical axis, or the sealing body is made into a smooth inner surface; the step type is used for the wheel cover; the honeycomb type sealing processing technology is complex, but the sealing effect is good, and the structural rigidity of the sealing sheet is high.

In one embodiment, the two ends of the rotor 1 are further provided with flanges 8, a side wall of the flange 8 far away from the machine base 2 is provided with a plurality of fixing screws 9, the thread sections of the fixing screws 9 extend into the side wall of the end cover 3, the connection parts of each fixing screw 9 and the two side walls of the flange 8 are respectively sleeved with a check ring 10, and the connection parts of each fixing screw 9 and the inner wall of the flange 8 are respectively sleeved with a fastening nut 11.

In one embodiment, the adjusting member is configured as an adjusting bolt 53, and the rotor 1 is centered with the stator in the stand 2 through the screwing distance of the adjusting member, so that the adjusting member is convenient for a worker to use.

In one embodiment, the supporting frame 51 is further provided with a plurality of locking bolts 12 for locking the supporting ring 52, the locking bolts 12 and the adjusting member are distributed in a staggered manner, and after the supporting ring 52 is attached to the rotor 1 and the rotor 1 is centered, the supporting ring 52 and the supporting frame 51 can be fixed to ensure that the rotor 1 is always centered with the stator.

A method of installing a bearingless generator comprising the steps of:

S1, penetrating the rotor 1: the staff welds the support frame 51 on the lower semicircle plate of the end cover 3, then transversely penetrates the rotor 1 into the machine base 2, at the moment, lifts or jacks up by using an external crane to keep the rotor 1 horizontal, then the lower semicircle plate of the end cover 3 is fixed on the end plates on two sides of the machine base 2 through the spigot fit, further the support ring 52 is arranged on the support frame 51 in a mode of sleeving the outer side of the rotor 1, at the moment, the crane lifts or jacks up, the weight of the rotor 1 can fall on the support ring 52 completely, at the moment, the upper semicircle plate of the end cover 3 is fixed on the end plates of the machine base 2 in the spigot fit mode;

S2, sealing and centering the rotor 1; two semicircular rings are fixed on the end cover 3 through a spigot fit mode at two ends of the rotor 1 respectively, so that the two semicircular rings form a sealing ring 4 for integral use, the inner ring of the sealing ring 4 with the similar labyrinth structure 7 can realize dynamic sealing between the rotor 1 and the end cover 3, then a clearance between the inner circle of the sealing ring 4 and the rotor 1 is measured by a feeler gauge, the screwing distance of the adjusting bolt 53 is changed by rotating the adjusting bolt 53, and then the position of the supporting ring 52 is adjusted, so that the clearance between the inner circle of the sealing ring 4 and the outer side of the rotor 1 is uniform, namely the rotor 1 and a stator in the machine base 2 are successfully centered, and after adjustment is finished, the supporting ring 52 is locked and fixed by the locking bolt 12;

In the step, as the rotor 1 is a rotating part and the end cover 3 is a static part, in order to realize dynamic sealing of the rotor 1 and the end cover 3, a sealing ring 4 matched with a spigot is added on the end cover 3, so that the rotor 1 is not damaged, and as the clearance between the outer side of the rotor 1 and the periphery of the end cover 3 is equal after the rotor 1 is aligned, whether the rotor 1 and the stator are aligned successfully or not can be known by measuring whether the clearance is equal or not, and meanwhile, in order to ensure normal use of the rotor 1, the clearance is not more than 0.2mm, and the inner circle of the sealing ring 4 adopts a labyrinth structure 7, so that the dynamic sealing of the rotor 1 and the end cover 3 can be realized;

S3, transporting the machine base 2: the fixing screw rod 9 passes through the mounting hole on the flange 8, so that the fixing screw rod 9 is screwed into the outer wall of the end cover 3, and meanwhile, the retainer ring 10 is tightly combined with the flange 8 by the fastening nut 11, so that the rotor 1 cannot move left and right when the machine base 2 is transported, and at the moment, the machine base 2 can be transported by an external transportation device;

S4, field installation: after the machine base 2 is transported to the site, the fixed screw rod 9, the fastening nut 11 and the check ring 10 which are fastened during transportation are removed, the flanges 8 at the two ends of the rotor 1 are in positioning connection with the spigot of the flange 8 of the site prime motor, the locking bolts 12 of the locking support ring 52 are loosened, and the support ring 52 is removed, so that the machine base 2 is assembled into a generator body by matching with the rotor 1 and is in centering connection with the site prime motor for use without additional adjustment.

Through the steps S1-S4, the rotor 1 and the machine base 2 are assembled into the generator body, namely, the screwing distance of the adjusting bolt 53 is changed by rotating the adjusting bolt 53, and then the position of the supporting ring 52 is adjusted, so that the inner circle of the sealing ring 4 and the outer side clearance of the rotor 1 are quickly and evenly distributed, the centering of the rotor 1 and the stator in the machine base 2 is completed, the inner circle of the sealing ring 4 with the similar labyrinth structure 7 can realize the dynamic sealing between the rotor 1 and the end cover 3, and then the fixing screw 9 is matched to fix the rotor 1 and the end cover 3, so that the left and right movement of the machine base 2 during transportation of the machine base 2 can be avoided, the centering method is simple and quick, high in accuracy, and the whole machine base 2 can be transported, thereby avoiding the problems of long centering period of the rotor 1, poor centering accuracy and low assembly efficiency of the generator body due to poor centering accuracy, and indirectly guaranteeing the performance and service life of the assembled generator body;

The embodiment specifically solves the problems that in the prior art, as the bearingless generator has no support bearing, the stator and the rotor 1 cannot be installed and fixed in a factory during assembly and can only be independently sent to site for installation, site installation conditions are generally poor, the position of the rotor 1 is difficult to quickly position, the centering period of the rotor 1 is long, the precision is poor, and the assembly efficiency of the generator is affected.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. A bearingless generator, characterized by: the device comprises a rotor (1), a base (2) sleeved on the outer side of the rotor (1), end covers (3) connected to the left side and the right side of the base (2), a sealing ring (4) connected with the outer side wall of the end cover (3), and a supporting component arranged on the outer side wall of the end cover (3);

The support assembly comprises two support frames (51) welded on the end cover (3), a support ring (52) arranged at the top of the support frames (51) and used for supporting the rotor (1), and a plurality of adjusting pieces arranged on the support frames (51), wherein the rotor (1) is centered with a stator in the machine base (2) through the adjusting pieces.

2. A bearingless generator according to claim 1, wherein: the two end covers (3) are respectively fixed on the end plates at the left side and the right side of the machine base (2) through spigot matching, and the two sealing rings (4) are respectively clamped on the two end covers (3) through spigot matching.

3. A bearingless generator according to claim 1, wherein: a plurality of connecting bolts (6) are circularly arranged on the sealing ring (4), and thread segments of the connecting bolts (6) extend into the end cover (3).

4. A bearingless generator according to claim 3, wherein: the sealing ring (4) is made of lead alloy material, and the inner wall of the sealing ring (4) is provided with a labyrinth structure (7).

5. A bearingless generator according to claim 4, wherein: the labyrinth structure (7) is formed by a plurality of channels formed in the inner wall of the sealing ring (4) and matched with the inner wall of the sealing ring (4).

6. A bearingless generator according to claim 1, wherein: the two ends of the rotor (1) are also provided with flanges (8), a plurality of fixing screws (9) are arranged on a side wall of the flange (8) far away from the machine base (2), and thread sections of the fixing screws (9) extend into the side wall of the end cover (3).

7. A bearingless generator according to claim 6, wherein: retaining rings (10) are sleeved at the joints of the two side walls of each fixing screw (9) and the flange (8), and fastening nuts (11) are sleeved at the joints of the inner walls of each fixing screw (9) and the flange (8).

8. A bearingless generator according to claim 1, wherein: the adjusting piece is arranged to be an adjusting bolt (53), the rotor (1) is centered with a stator in the machine base (2) through the screwing distance of the adjusting piece, the end cover (3) is composed of an upper semicircular plate and a lower semicircular plate which are symmetrically distributed, and the sealing ring (4) is composed of an upper semicircular ring and a lower semicircular ring which are symmetrically distributed.

9. A bearingless generator according to claim 1, wherein: the support frame (51) is further provided with a plurality of locking bolts (12) for locking the support ring (52), and the locking bolts (12) and the adjusting piece are distributed in a staggered mode.