CN216564854U

CN216564854U - Buttress of hydraulic generator rotor

Info

Publication number: CN216564854U
Application number: CN202122862759.9U
Authority: CN
Inventors: 胡波; 杨峻; 李施荣; 覃万兵; 刘强; 聂君臣
Original assignee: Hubei Changyang Zhaolaihe Hydropower Investment Co ltd
Current assignee: Hubei Changyang Zhaolaihe Hydropower Investment Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-17
Anticipated expiration: 2031-11-22

Abstract

The utility model provides a buttress of a hydraulic generator rotor, which relates to the technical field of hydraulic generator maintenance and comprises an upper disc, a support plate and a lower bottom plate which are sequentially arranged from top to bottom; the upper disc and the lower bottom plate are arranged in parallel to the ground, and the upper end and the lower end of the supporting plate are fixedly connected with the upper disc and the lower bottom plate respectively; the upper disc is provided with a through hole for the lower flange of the generator rotor to pass through and an adjusting piece for adjusting the size of the through hole, and the through hole and the upper disc are coaxially arranged. It has solved the problem that can harm lower flange when carrying out the magnetic pole and dismantling that exists among the prior art.

Description

Buttress of hydraulic generator rotor

Technical Field

The utility model relates to the technical field of maintenance of hydraulic generators, in particular to a buttress of a hydraulic generator rotor.

Background

The hydraulic generator rotor comprises a main shaft, a cylindrical central body is coaxially arranged at the upper end of the main shaft, a magnetic pole is arranged on the outer circumference of the central body, a brake ring is arranged below the central body, a lower flange is coaxially arranged at the lower end of the main shaft, and when a hydropower station unit with the diameter smaller than that of the brake ring carries out unit overhaul each time, the hydraulic generator rotor needs to be lifted out of a machine pit and then lifted to a fixed installation room for overhaul. Like the utility model patent of patent number CN201720229885.1, the rotor is hoisted to the concrete buttress directly over after, aims at the through-hole on the lower flange of rotor shaft below one by one again and passes pre-buried bolt on the buttress, falls on the pre-buried plane steel sheet of rotor buttress again, and every nut of the pre-buried bolt of screwing at last passes through firm the fixing on the rotor buttress of lower flange with the rotor for the generator rotor is in under the fixed stay of rotor buttress and overhauls the position. However, during maintenance, impact force generated when the magnetic poles on the rotor are disassembled or hung can be directly transmitted to the lower flange, irreversible damage can be caused to the plane of the lower flange, and the difficulty in adjusting the generator rotor and the water turbine when the generator rotor and the water turbine are connected is increased.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a buttress of a hydraulic generator rotor, which solves the problem that a lower flange is damaged when a magnetic pole is disassembled in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a buttress of a hydro-generator rotor comprises an upper disc, a support plate and a lower bottom plate which are sequentially arranged from top to bottom;

the upper disc and the lower bottom plate are arranged in parallel to the ground, and the upper end and the lower end of the supporting plate are fixedly connected with the upper disc and the lower bottom plate respectively;

the upper disc is provided with a through hole for the lower flange of the generator rotor to pass through and an adjusting piece for adjusting the size of the through hole, and the through hole and the upper disc are coaxially arranged.

Compared with the prior art, the utility model has the following beneficial effects:

when overhauing, generator rotor's lower flange passes the perforation from last to down, makes brake ring and last disc contact, carries out the bearing through the brake ring, and through the fenestrate size of adjustment, can allow the lower flange of different diameters to pass through, does not come to fix generator rotor through fixed lower flange and then overhauls, has avoided the damage of lower flange.

Preferably, the regulating part includes fixed ring and a plurality of sliding blocks that set up along last disc circumference, the sliding block along the radial sliding connection of last disc on the fixed ring, a plurality of the sliding block encloses into the perforation.

Preferably, every the sliding block includes the supporting part, follow on the fixed ring radially is equipped with the slide rail, the slide rail opening makes progress and the height of slide rail equals with the thickness of supporting part, and supporting part sliding connection is in the slide rail, the bottom of sliding block is equipped with the control block, the vertical rotating electrical machines that is equipped with on the lower plate, the fixed gear that is equipped with on the output shaft of rotating electrical machines, the side of control block is followed fixed ring radially be equipped with gear complex rack.

Preferably, the sliding block is further provided with a sliding part, the sliding part is arranged below the supporting part, an inner groove is formed in the fixed circular ring along the sliding direction parallel to the sliding block, and the sliding part is connected in the inner groove in a sliding mode.

Preferably, a plurality of angle steels are further arranged between the upper disc and the lower bottom plate, and two ends of each angle steel are fixedly connected with the upper disc and the lower bottom plate respectively.

Preferably, the upper disc is formed by splicing two semicircular discs with the same size, the lower bottom plate is formed by two small bottom plates with the same size, the semicircular discs and the small bottom plates are arranged oppositely, the two ends of each semicircular disc are respectively provided with a vertical line, the connecting plates of the semicircular discs are fixedly connected with the small bottom plates opposite to the semicircular discs, and one end of each of the two semicircular discs is fixedly connected with the corresponding connecting plate through bolts.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

Fig. 1 is a schematic structural diagram of a generator rotor.

Fig. 2 is a schematic top view of the overall structure of the embodiment of the present invention.

Fig. 3 is a schematic front view of the overall structure of the embodiment of the present invention.

FIG. 4 is a schematic sectional view of the connection between the fixing ring and the sliding block according to the embodiment of the present invention.

FIG. 5 is a schematic top view of the fixed ring and slider assembly according to an embodiment of the present invention.

FIG. 6 is a top view of a retaining ring according to an embodiment of the present invention.

FIG. 7 is a top view of a retaining ring according to another embodiment of the present invention.

In the above drawings: 1. an upper disc; 11. fixing the circular ring; 111. an inner groove; 112. a slide rail; 12. a slider; 13. a semicircular disc; 121. a support portion; 122. a sliding part; 123. a control block; 2. a lower base plate; 21. a small base plate; 3. a support plate; 4. perforating; 5. a rack; 6. a gear; 7. angle steel; 8. a connecting plate; 9. a lower flange; 10. a brake ring; 20. a notch; 30. a magnetic pole; 40. a central body.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the utility model clearer and easier to understand, the technical scheme of the utility model is further explained in the following with the accompanying drawings and the embodiments.

As shown in fig. 2 and 3, an embodiment of the utility model provides a buttress of a hydro-generator rotor, which comprises an upper disc 1, a support plate 3 and a lower bottom plate 2 which are sequentially arranged from top to bottom; the upper disc 1 and the lower bottom plate 2 are both arranged in parallel to the ground, and the upper end and the lower end of the support plate 3 are respectively fixedly connected with the upper disc 1 and the lower bottom plate 2; the upper disc 1 is provided with a through hole 4 for a lower flange 9 of the generator rotor to pass through and an adjusting piece for adjusting the size of the through hole 4, and the through hole 4 and the upper disc 1 are coaxially arranged.

As shown in figure 1, the generator rotor comprises a lower flange 9 and a brake ring 10, when the generator rotor is overhauled, the generator rotor is hoisted above an upper disc 1, the lower flange 9 is aligned to a through hole 4 of the upper disc 1 and is slowly put down, the lower flange 9 penetrates through the through hole 4, the brake ring 10 is in contact with the upper disc 1, the brake ring 10 bears the weight, the lower flange 9 does not bear the weight, and the damage of the lower flange 9 is avoided. The supporting plate 3 supports the upper disc 1; the contact area of the bottom of the brake ring 10 is larger than the bottom area of the lower flange 9, so that the pressure dispersion is increased, the requirement on the precision of the brake ring 10 is not high, and the adjustment difficulty in the process of connecting the brake ring with a water turbine is reduced; the perforations 4 are adjustable to accommodate the lower flange 9 of rotors of different sizes.

As shown in fig. 2 and 5, in order to change the size of the through hole 4, the adjusting member includes a fixed ring 11 and four sliding blocks 12 arranged along the circumferential direction of the upper disc 1, the sliding blocks 12 are slidably connected to the fixed ring 11 along the radial direction of the upper disc 1, and the sliding blocks 12 surround the through hole 4. Sliding block 12 is equipped with circular arc section and vertical section towards the axial one end of last disc 1, and when the vertical section contact between adjacent sliding block 12, the size of perforation 4 equals the size of the circle that the circular arc section meets and forms this moment, when sliding to the direction of keeping away from the axis of last disc 1, the area increase of perforation 4, the maximum diameter that lower flange 9 can pass through is the internal diameter of fixed ring 11.

As shown in fig. 4 and 6, in the concrete arrangement of the sliding blocks 12, each sliding block 12 includes a supporting portion 121, a sliding rail 112 is arranged on the fixed ring 11 along the radial direction of the fixed ring 11, the opening of the sliding rail 112 is upward, the height of the sliding rail 112 is equal to the thickness of the supporting portion 121, the supporting portion 121 is slidably connected in the sliding rail 112, a control block 123 is arranged at the bottom of the sliding block 12, a rotating motor is vertically arranged on the lower base plate 2, a gear 6 is fixedly arranged on an output shaft of the rotating motor, and a rack 5 matched with the gear 6 is arranged on a side surface of the control block 123 along the radial direction of the fixed ring 11. The height of the slide rail 112 is equal to the thickness of the support part 121, so that the upper surface of the support part 121 and the upper surface of the fixed ring 11 are in the same plane, the surface of the upper disc 1 is smooth, the generator rotor can be conveniently placed, and the contact area between the upper disc and the brake ring 10 is increased; the gear 6 rotates under the drive of rotating electrical machines, tooth and rack 5 cooperation on the gear 6 drive control block 123 along fixed ring 11 radial movement to drive supporting part 121 and slide on slide rail 112, change the size of perforation 4 with this, the maximum area that can pass through this moment is the area of the circular arc section of four sliding blocks 12, the projection of vertical section and fixed ring 11 inner ring formation on vertical direction, the maximum diameter that can pass through can draw the diameter of maximum circle for this reason in the projection area.

Furthermore, sliding block 12 is further provided with sliding portion 122, sliding portion 122 is disposed below supporting portion 121, fixed ring 11 is provided with inner groove 111 along a sliding direction parallel to sliding block 12, and sliding portion 122 is slidably connected in inner groove 111. Inner grooves 111 are shown in FIG. 4 as being disposed below sliding tracks 112 to increase stability during sliding of slider 12.

As shown in fig. 3, a plurality of angle steels 7 are further arranged between the upper disc 1 and the lower bottom plate 2, and two ends of the angle steels 7 are respectively fixedly connected with the upper disc 1 and the lower bottom plate 2. Angle steel 7 is provided to increase the strength of the support of the buttress.

As shown in fig. 3, the upper disc 1 is formed by splicing two half discs 13 with the same size, the lower base plate 2 is formed by two small base plates 21 with the same size, the half discs 13 and the small base plates 21 are arranged oppositely, two ends of the half discs 13 are respectively provided with a connecting plate 8 perpendicular to the half discs 13, the connecting plate 8 is fixedly connected with the small base plates 21 opposite to the half discs 13, and the two connecting plates 8 on one ends opposite to the two half discs 13 are fixedly connected through bolts. The buttress is connected through the bolt on the connecting plate 8 by two parts, conveniently installs.

The prior art can understand that after the magnetic pole 30 of the generator rotor is articulated, wedge grooves with openings at the upper end and the lower end respectively exist between the magnetic pole 30 and the generator rotor central body 40, a main key and an auxiliary key are required to be combined to wedge two wedge grooves of each magnetic pole 30, under the normal condition, when the main key is down pressed, the auxiliary key can fall down along with the main key, but the upper disc 1 is arranged on the buttress to bear the weight, the auxiliary key is also propped against when bearing the weight, and the falling of the auxiliary key is prevented. When the main key and the auxiliary key are disassembled, the main key and the auxiliary key are generally loosened and then pulled out from the upper part, and in order to prevent the situation that the main key and the auxiliary key cannot be loosened and pulled out smoothly, as shown in fig. 7, a notch 20 is arranged at a position where a slide rail 112 is not arranged on a fixed ring 11, a generator rotor is lifted and rotated, a brake ring 10 is disassembled, the main key and the auxiliary key are adjusted to be positioned above the notch 20, and the auxiliary key is downward hit so as to be taken out smoothly from the lower part.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a buttress of hydraulic generator rotor which characterized in that: comprises an upper disc (1), a supporting plate (3) and a lower bottom plate (2) which are arranged from top to bottom in sequence;

the upper disc (1) and the lower bottom plate (2) are arranged in parallel to the ground, and the upper end and the lower end of the support plate (3) are fixedly connected with the upper disc (1) and the lower bottom plate (2) respectively;

the upper disc (1) is provided with a through hole (4) for a lower flange (9) of a generator rotor to pass through and an adjusting piece for adjusting the size of the through hole (4), and the through hole (4) and the upper disc (1) are coaxially arranged.

2. The buttress of a hydro-generator rotor of claim 1, wherein: the adjusting part comprises a fixed circular ring (11) and a plurality of sliding blocks (12) which are arranged along the circumferential direction of the upper disc (1), the sliding blocks (12) are connected to the fixed circular ring (11) in a sliding mode along the radial direction of the upper disc (1), and the sliding blocks (12) enclose the through holes (4).

3. The buttress of a hydro-generator rotor of claim 2, wherein: every sliding block (12) include supporting part (121), follow on fixed ring (11) radially are equipped with slide rail (112), slide rail (112) opening is upwards and the height of slide rail (112) is equal with the thickness of supporting part (121), and supporting part (121) sliding connection is in slide rail (112), the bottom of sliding block (12) is equipped with control block (123), and the lower plate (2) is gone up and is vertically equipped with the rotating electrical machines, fixed gear (6) that are equipped with on the output shaft of rotating electrical machines, the side of control block (123) is followed fixed ring (11) radially be equipped with gear (6) complex rack (5).

4. The buttress of a hydro-generator rotor of claim 3, wherein: the sliding block (12) is further provided with a sliding part (122), the sliding part (122) is arranged below the supporting part (121), an inner groove (111) is formed in the fixed circular ring (11) along the sliding direction parallel to the sliding block (12), and the sliding part (122) is connected in the inner groove (111) in a sliding mode.

5. The buttress of a hydro-generator rotor of claim 1, wherein: a plurality of angle steels (7) are further arranged between the upper disc (1) and the lower base plate (2), and two ends of each angle steel (7) are fixedly connected with the upper disc (1) and the lower base plate (2) respectively.

6. The buttress of a hydro-generator rotor of claim 1, wherein: go up disc (1) and form by the concatenation of two semicircle dishes (13) that the size equals, lower plate (2) comprise two little bottom plates (21) that the size equals, semicircle dish (13) with little bottom plate (21) set up relatively, and the both ends of semicircle dish (13) are equipped with the perpendicular to respectively connecting plate (8) of semicircle dish (13) just connecting plate (8) and the relative little bottom plate (21) rigid coupling of semicircle dish (13), and two relative one of semicircle dish (13) are served two connecting plates (8) and are carried out the rigid coupling through the bolt.