CN218816721U

CN218816721U - Oil throwing prevention device used between thrust head and sealing cover of hydraulic generator

Info

Publication number: CN218816721U
Application number: CN202222546038.1U
Authority: CN
Inventors: 蔡红
Original assignee: Tianjin Tianfa Heavy Hydropower Equipment Manufacturing Co Ltd
Current assignee: Tianjin Tianfa Heavy Hydropower Equipment Manufacturing Co Ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-04-07
Anticipated expiration: 2032-09-26

Abstract

The utility model discloses a prevent getting rid of oily device that is used for between hydraulic generator thrust collar and the sealed lid belongs to hydraulic generator technical field. The oil throwing prevention device comprises a thrust head and a sealing cover sleeved on the thrust head, an oil throwing piece is sleeved on the thrust head, an oil blocking piece is installed on the sealing cover, an oil leakage gap is formed between the oil throwing piece and the oil blocking piece and used for blocking oil mist or oil liquid from diffusing, and a plurality of oil throwing holes are formed in the oil throwing piece. The utility model discloses an oil leak clearance makes oil mist and fluid gather on getting rid of oil spare, the unit during operation, get rid of oil spare and rotate along with the thrust block is high-speed, under the effect of centrifugal force, fluid gets rid of oil spare from getting rid of the oil hole discharge, make fluid and oil mist keep away from thrust block and sealed failure position of covering, the oil phenomenon of getting rid of has effectively been solved, and the preparation cycle who gets rid of oil spare and fender oil spare is short, can restore unit to operating condition fast, be applicable to emergency treatment under the proruption situation, have the characteristics that preparation fast and economic nature are good when guaranteeing unit normal operating.

Description

Oil throwing prevention device used between thrust head and sealing cover of hydraulic generator

Technical Field

The utility model belongs to the technical field of hydraulic generator, especially, a prevent getting rid of oily device that is used for between hydraulic generator thrust collar and the sealed lid.

Background

The hydraulic generator is a generator which takes a hydraulic turbine as a prime mover to convert water energy into electric energy, and is a main power device which is applied to a hydropower station to convert water energy into mechanical energy.

In the practical application of the hydraulic generator, the phenomenon of serious oil throwing occurs when the oil passes through the upper guide bearing, and after on-site investigation, the oil is mainly thrown out from the gap between the comb teeth and the thrust head at the sealing cover of the upper frame, so that the oil throwing amount is large, the operation of the unit is seriously influenced, and the unit needs to be shut down and timely processed. In the case of emergency situations in the field, the general solution is to replace the sealing caps with contact oil stops. The contact part of the contact oil shield and the thrust head is made of wear-resistant materials, and can be in zero-distance contact with the thrust head, and the thrust head and the contact oil shield have no gap during operation, so that oil and oil mist can be effectively prevented from overflowing, and the problem of a fault unit is well solved.

In terms of the prior art, several days are needed from purchasing to installing the contact type oil catch on a fault unit, normal operation of a power station is seriously influenced, loss is serious, if one set of contact type oil catch is purchased for standby, economic cost is high, an oil throwing prevention device capable of being applied to emergency is urgently needed, and the oil throwing prevention device has the advantages of being fast in preparation and good in economical efficiency while ensuring normal operation of the unit.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model provides an oil slinger is prevented that is used for between hydraulic generator thrust collar and sealed lid to solve the above-mentioned problem that prior art exists.

The technical scheme is as follows: the utility model provides an anti-oil slinging device that is used for between hydraulic generator thrust collar and sealed lid, includes thrust collar and the sealed lid of suit on the thrust collar, the cover is equipped with the oil slinging piece on the thrust collar, install on the sealed lid and keep off oil spare, form the oil leak clearance between oil slinging piece and the oil fender spare for block oil mist or fluid diffusion, a plurality of oil slingings have been seted up on the oil slinging piece.

Furthermore, the oil slinger is composed of two groups of semi-cylindrical splicing half bodies, each splicing half body comprises an oil slinger inner cylinder, an oil slinger outer cylinder is arranged on the outer wall of each oil slinger inner cylinder, oil slingers are arranged on the oil slingers, oil slingers are communicated with intersecting line positions of the oil slingers and the oil slingers, and joint plates are respectively installed at the end parts of the oil slingers and used for connecting the two groups of splicing half bodies.

Furthermore, an assembly hole is formed in the oil throwing inner cylinder, an assembly structure is formed in the thrust head, and the oil throwing piece penetrates through the assembly hole through a mounting bolt and extends to the assembly structure to be limited in position.

Furthermore, the oil slinger further comprises rib plates, the rib plates are uniformly arranged at the included angle position between the oil slinger inner cylinder and the oil slinger, and the rib plates are arranged below the oil slinger.

Furthermore, a rubber pad is arranged between the oil throwing piece and the thrust head.

Furthermore, the oil blocking part is composed of two groups of semi-cylindrical oil blocking half bodies, each oil blocking half body comprises an oil blocking side wall and a connecting ring plate installed on the oil blocking side wall, an oil leakage gap is formed between each oil blocking side wall and the oil throwing outer cylinder, and the radial size of the oil leakage gap is not larger than 5mm.

Furthermore, the connecting ring plate is evenly provided with connecting holes.

Furthermore, the connecting ring plate is mounted on the sealing cover through a fastener, the fastener comprises a sealing gasket, a connecting bolt and a connecting nut, the sealing gasket is sleeved on the connecting bolt, the connecting bolt sequentially penetrates through the connecting hole and the sealing cover, and the connecting nut is assembled on the connecting bolt.

Furthermore, the sealing gasket is a JB982-77 combined sealing gasket.

Has the advantages that: the utility model discloses a get rid of oil spare and keep off oil spare and form the oil leak clearance, make oil mist and fluid gather on getting rid of oil spare, the unit during operation, get rid of oil spare and rotate along with the thrust block is high-speed, under the effect of centrifugal force, fluid gets rid of oil spare from getting rid of the oil hole discharge, make fluid and oil mist keep away from the thrust block and the sealed invalid position of sealing up, the oil phenomenon of getting rid of has effectively been solved, and get rid of the simple structure of oil spare and fender oil spare, the preparation cycle is short, can restore unit to operating condition fast, be applicable to the emergency treatment under the proruption situation, have the characteristics that preparation fast and economic nature are good when guaranteeing unit normal operating.

Drawings

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

Fig. 2 is an enlarged view of a portion a in fig. 1 according to the present invention.

Fig. 3 is a schematic structural view of the oil baffle of the present invention.

Fig. 4 is a top view of the oil slinger of the present invention.

Fig. 5 is a schematic structural view of the middle split half body of the present invention.

Fig. 6 is an enlarged view of the present invention at B in fig. 5.

Fig. 7 is a cross-sectional view of the present invention at C in fig. 5.

The reference signs are: 1. a thrust collar; 11. assembling the structure; 2. a sealing cover; 3. an oil blocking member; 31. sealing gaskets; 32. A connecting bolt; 33. an oil retaining sidewall; 34. a connecting nut; 35. connecting holes; 36. a connecting ring plate; 4. a rubber pad; 5. an oil throwing piece; 51. an oil slinger; 52. an oil throwing inner cylinder; 53. an assembly hole; 54. a seaming plate; 55. an oil throwing outer cylinder; 56. an oil throwing hole; 57. a rib plate; 6. installing a bolt; 7. and oil leakage gaps.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

As shown in fig. 1 and 2, an oil slinging prevention device used between a thrust collar and a sealing cover of a hydraulic generator comprises a thrust collar 1 and a sealing cover 2 sleeved on the thrust collar 1, wherein an oil slinging piece 5 is sleeved on the thrust collar 1, an oil blocking piece 3 is installed on the sealing cover 2, an oil leakage gap 7 is formed between the oil slinging piece 5 and the oil blocking piece 3 and is used for blocking oil mist or oil diffusion, and a plurality of oil slinging holes 56 are formed in the oil slinging piece 5; the tiny space of oil leak clearance 7 has accelerated the oil mist and has gathered into oil and drip, after oil mist or fluid process oil leak clearance 7, gather on getting rid of oil piece 5 with liquid oil more, when getting rid of oil piece 5 along with thrust head 1 is high-speed rotatory, under the effect of centrifugal force, fluid is followed and is thrown away oil piece 5 by discharging from getting rid of oil hole 56, avoided fluid and oil mist to thrust head 1 and the clearance diffusion of sealed lid 2, the oil of getting rid of phenomenon that has the clearance to cause because of the broach in sealed lid 2 and thrust head 1's cooperation has effectively been solved, and the simple structure who gets rid of oil piece 5 and fender oil piece 3, the preparation cycle is short, be applicable to emergency treatment under the proruption situation.

As shown in fig. 4-7, the oil slinger 5 is composed of two half-cylindrical split halves, each split half comprises an oil slinger inner cylinder 52, an oil slinger 51 is arranged on the outer wall of the oil slinger inner cylinder 52, an oil slinger outer cylinder 55 is arranged on the oil slinger 51, an oil slinger hole 56 is formed at the intersection line position of the oil slinger outer cylinder 55 and the oil slinger 51 in a penetrating manner, and seam-joining plates 54 are respectively arranged at the end parts of the oil slinger 51 and used for connecting the two half split halves; the two spliced half bodies of the oil slinging piece 5 are connected through bolts, and the two-petal type structural design facilitates the installation of the oil slinging piece 5 on the thrust head 1 and the synchronous rotation along with the thrust head 1.

As shown in fig. 2, 4, 6 and 7, the oil slinger inner cylinder 52 is provided with 12 assembling holes 53, the thrust collar 1 is provided with an assembling structure 11, and the oil slinger 5 passes through the assembling holes 53 through the mounting bolts 6 and extends to the assembling structure 11 for position limitation; because of thrust 1 is the important machined part of unit, not allow deformation and welding, so get rid of oil spare 5 and divide into two sets of concatenation halfbodies and close on thrust 1, because thrust 1 is the rotating member, so get rid of oil spare 5 and also rotate along with thrust 1, thereby give away from 16 oil holes 56 that get into from oil leak clearance 7 from getting rid of 10 × 60mm, and assembly structure 11 punches the eye-splice through manual magnetic drill, because of there is not the fixed magnetic drill in position, so assembly structure 11 can only punch a hole that is more shallow, and can not tap the screw hole, cause construction bolt 6 to set up in a hole that does not have the screw, this leads to getting rid of oil spare 5 and has the rocking in the middle of rotatory.

As shown in fig. 2, in order to solve the problem of the shaking of the oil slinger 5, a rubber pad 4 is arranged between the oil slinger 5 and the thrust collar 1, the rubber pad 4 is also designed in a two-petal shape, and the oil slinger 5 is supported by the elasticity of the rubber pad 4 to prevent the shaking.

As shown in fig. 4 and 7, the oil slinger 5 further comprises rib plates 57, the rib plates 57 are uniformly arranged at the included angle between the oil slinger inner cylinder 52 and the oil slinger 51, the rib plates 57 are arranged below the oil slinger 51, and the plurality of uniformly distributed rib plates 57 are used for enhancing the connection strength between the oil slinger inner cylinder 52 and the oil slinger 51, so that the oil slinger 5 has good structural strength.

As shown in fig. 1-3, the oil blocking member 3 is composed of two half-cylindrical oil blocking half bodies, each oil blocking half body includes an oil blocking side wall 33 and a connecting ring plate 36 mounted on the oil blocking side wall 33, an oil leakage gap 7 is formed between the oil blocking side wall 33 and the oil slinging outer cylinder 55, the radial size of the oil leakage gap 7 is not larger than 5mm (if the radial size is too large, the oil leakage is increased, and the radial size is not matched with the oil slinging amount of the oil slinging hole 56), the effective height of the oil leakage gap 7 is 50-100mm (if the proper height is favorable for liquefying the oil mist), and the specific size can be adjusted according to the size of the unit.

As shown in fig. 2 and 3, preferably, the oil blocking member 3 is made of high-quality carbon structural steel, since the sealing cover 2 is generally made of aluminum, the oil blocking member 3 and the sealing cover 2 are connected by bolts, the connecting ring plate 36 is uniformly provided with the connecting holes 35, the connecting ring plate 36 is mounted on the sealing cover 2 by fasteners, the fasteners include a sealing gasket 31, a connecting bolt 32 and a connecting nut 34, the sealing gasket 31 is sleeved on the connecting bolt 32, the connecting bolt 32 sequentially penetrates through the connecting holes 35 and the sealing cover 2, the connecting nut 34 is assembled on the connecting bolt 32, in order to prevent oil from leaking outwards along the connecting bolt 32, the sealing gasket 31 is made of JB982-77 combined sealing washer, the sealing gasket 31 made of oil-resistant nitrile rubber or fluorine rubber can be better vulcanized to the assembly structure of the sealing cover 2, and can relieve over-limited torque at the connection, thereby ensuring the reliability of sealing system in an oil environment.

When an oil throwing phenomenon appears in a gap between comb teeth of a sealing cover 2 and a thrust head 1 on a machine set site, an oil blocking piece 3 and an oil throwing piece 5 are quickly prepared according to the model of the machine set (the oil blocking piece and the oil throwing piece 5 can also be prepared in advance to prevent loss caused by accidents), firstly, the sealing cover 2 is disassembled, construction teams are divided into two groups, one group carries out installation of the oil blocking piece 3, and the other group carries out installation of the oil throwing piece 5.

When the oil blocking member 3 is installed, the oil blocking member 3 is concentrically placed with the sealing cap 2, the sealing cap 2 is pierced from the position of the coupling hole 35 by a magnetic drill, the sealing cap 2 and the oil blocking member 3 are coupled by a fastening member, and a special sealing gasket 31 is disposed inside the sealing cap 2. When the oil throwing piece 5 is installed, the rubber pad 4 is wound at a proper position of the thrust collar 1 according to the height of the existing oil leakage gap 7, then the two groups of splicing half bodies of the oil throwing piece 5 are combined on the rubber pad 4 wound on the thrust collar 1, the assembling structure 11 is arranged on the thrust collar 1 at the position of the assembling hole 53 by using a magnetic drill, and then the installing bolt 6 is inserted into the assembling structure 11.

Then the sealing cover 2 provided with the oil blocking part 3 is assembled on the thrust head 1, after the unit is started, oil mist and oil enter the oil throwing part 5 from the oil leakage gap 7, the oil throwing part 5 is driven to rotate at a high speed by the rotation of the thrust head 1, and the oil at the position of the oil throwing part 5 is discharged from the oil throwing hole 56 under the action of centrifugal force, so that the oil leakage is greatly alleviated, and the unit can normally work.

After contact oil catch purchase was returned, removable contact oil catch moved sealedly to thrust collar 1, need carry out the shutoff to the mounting hole on the sealed lid 2 after dismantling and keep off oil piece 3.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be modified to perform various equivalent transformations, which all belong to the protection scope of the present invention.

Claims

1. The utility model provides an anti-oil-throwing device for between hydraulic generator thrust collar and sealed lid, includes thrust collar (1) and sealed lid (2) of suit on thrust collar (1), its characterized in that, the cover is equipped with oil-throwing piece (5) on thrust collar (1), install on sealed lid (2) and keep off oil piece (3), form oil leak clearance (7) between oil-throwing piece (5) and oil-keeping piece (3) for block oil mist or fluid diffusion, it has seted up a plurality of oilholes (56) of getting rid of on oil-throwing piece (5).

2. The oil slinger device for the hydraulic generator thrust block and the sealing cover is characterized in that the oil slinger (5) consists of two half-cylindrical spliced half bodies, the spliced half bodies comprise an oil slinger inner cylinder (52), an oil slinger (51) is arranged on the outer wall of the oil slinger inner cylinder (52), an oil slinger outer cylinder (55) is arranged on the oil slinger (51), the oil slinger hole (56) penetrates through the intersection line position of the oil slinger outer cylinder (55) and the oil slinger (51), and joint plates (54) are respectively installed at the end parts of the oil slinger (51) and used for connecting the two half bodies.

3. The oil slinging prevention device used between the thrust head and the sealing cover of the hydraulic generator according to claim 2, wherein an assembly hole (53) is formed in the oil slinging inner cylinder (52), an assembly structure (11) is formed in the thrust head (1), and the oil slinging piece (5) penetrates through the assembly hole (53) through a mounting bolt (6) and extends to the assembly structure (11) for position limitation.

4. The oil slinger device for the hydraulic generator thrust collar and the sealing cover according to claim 3 is characterized in that the oil slinger (5) further comprises rib plates (57), the rib plates (57) are uniformly arranged at the included angle position between the oil slinger inner barrel (52) and the oil slinger (51), and the rib plates (57) are arranged below the oil slinger (51).

5. The oil throwing prevention device for the hydraulic generator between the thrust collar and the sealing cover according to claim 4, wherein a rubber pad (4) is arranged between the oil throwing member (5) and the thrust collar (1).

6. The oil slinger preventing device used between the thrust block and the sealing cover of the hydro-generator according to claim 5, wherein the oil blocking member (3) is composed of two sets of semi-cylindrical oil blocking half bodies, each oil blocking half body comprises an oil blocking side wall (33) and a connecting ring plate (36) installed on the oil blocking side wall (33), a gap between the oil blocking side wall (33) and the oil slinging outer barrel (55) forms an oil leaking gap (7), and the radial size of the oil leaking gap (7) is not more than 5mm.

7. The oil slinger preventing device between the thrust block and the sealing cover of the hydraulic generator as claimed in claim 6, wherein the connecting ring plate (36) is uniformly provided with connecting holes (35).

8. The oil slinger preventing device between the thrust collar and the sealing cover of the hydro-generator according to claim 7, wherein the connecting ring plate (36) is mounted on the sealing cover (2) by a fastening member comprising a sealing gasket (31), a connecting bolt (32) and a connecting nut (34), the sealing gasket (31) is sleeved on the connecting bolt (32), the connecting bolt (32) passes through the connecting hole (35) and the sealing cover (2) in sequence, and the connecting nut (34) is assembled on the connecting bolt (32).

9. The oil slinger preventing device between the thrust block and the sealing cover of the hydraulic generator according to claim 8, wherein the sealing gasket (31) is a JB982-77 combined sealing gasket.