CN117469291B - Tilting pad sliding bearing with self-adaptive aligning function for centrifugal compressor - Google Patents
Tilting pad sliding bearing with self-adaptive aligning function for centrifugal compressor Download PDFInfo
- Publication number
- CN117469291B CN117469291B CN202311533477.1A CN202311533477A CN117469291B CN 117469291 B CN117469291 B CN 117469291B CN 202311533477 A CN202311533477 A CN 202311533477A CN 117469291 B CN117469291 B CN 117469291B
- Authority
- CN
- China
- Prior art keywords
- bearing
- bearing body
- tilting
- buffer
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 40
- 230000003139 buffering effect Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 14
- 239000010687 lubricating oil Substances 0.000 description 11
- 241000446313 Lamella Species 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 7
- 239000000806 elastomer Substances 0.000 description 7
- 230000008093 supporting effect Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/02—Sliding-contact bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/1065—Grooves on a bearing surface for distributing or collecting the liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sliding-Contact Bearings (AREA)
- Support Of The Bearing (AREA)
Abstract
The invention discloses a tilting pad sliding bearing with self-adaptive aligning function for a centrifugal compressor, belonging to the field of bearings.
Description
Technical Field
The invention relates to the field of bearings, in particular to a tilting pad sliding bearing with a self-adaptive aligning function for a centrifugal compressor.
Background
The tilting pad sliding bearing is a bearing form with best stability, and is generally composed of 4, 5 or more tilting pads with Babbitt alloy poured into inner holes, wherein the tilting pads can swing along with the change of load and speed to adjust the tilt of the pads, multiple oil wedges are formed around a shaft neck, the back arc of each pad is in line contact with the inner holes of a bearing body, and when the tilting pad bearing works, the oil film clearance can be adjusted in a swinging way, so that the tilting pad bearing has good vibration damping property.
The radial tilting pad sliding bearing is generally composed of a bearing body, a cover plate, a tilting pad inside the bearing body and other structures. In centrifugal compressors, radial tiltable bearings are commonly used, the pads of which bear radial loads in the unit, the pads being swingable about respective fulcrums, the fulcrums of the pads being in direct contact with the inner bore surface of the bearing body; when bearing load, the pad automatically forms a wedge-shaped gap with the journal, and the wedge-shaped gap is filled with an oil film to form an oil wedge, so that the radial tilting pad bearing bears load by virtue of the oil film.
In the traditional tilting pad sliding bearing, the pad is directly contacted with the inner hole surface of the bearing body only by virtue of a fulcrum, a gap capable of enabling the pad to swing is reserved between the other end surfaces and the inner hole surface of the bearing body, a buffer structure for supporting the pad is not arranged, most of the pad is directly contacted with the inner hole surface of the bearing body in the swinging process, the pad bears larger load force in the long-time use process, and the pad is easy to be lost to influence the subsequent aligning use.
Therefore, we propose a centrifugal compressor with self-adaptive aligning function, and adopt tilting pad sliding bearings to effectively solve the above problems.
Disclosure of Invention
The invention aims to solve the problems, and now provides an inclined shoe sliding bearing for a centrifugal compressor with a self-adaptive aligning function, which is characterized in that an elastic body which is in sliding contact with the end parts of two adjacent inclined guide shoes and is connected with the inner wall of a bearing body is additionally arranged between the two adjacent inclined guide shoes, the elastic body plays a role in lifting the end parts of the inclined guide shoes in the normal operation state of a shaft neck, and when the shaft neck is slightly misaligned or changed, the elastic body plays a role in buffering and protecting the inclined guide shoes in the self-swinging aligning process, resists the excessive vibration force of the shaft neck on the inclined guide shoes, and plays a role in fine adjustment and guide on the shaft neck by matching with the inclined guide shoes, and lubricating oil injected into two buffer grooves of the elastic body forms an inner oil film and an outer oil film, so that the compression and vibration resistance effects of the inclined guide shoes are further improved.
The aim of the invention can be achieved by the following technical scheme: the tilting pad sliding bearing for the centrifugal compressor with the self-adaptive aligning function comprises a bearing body, wherein a bearing sleeve is sleeved outside the bearing body, an inner mounting groove for embedding and mounting the bearing body is formed in the inner end wall of the bearing sleeve, a plurality of tilting guide pads are annularly distributed on the inner hole end surface of the bearing body, the inner ends of the tilting guide pads are fixedly connected with swinging raised heads which are movably embedded on the inner hole end surface of the bearing body, an elastic body which is fixedly connected to the inner hole end wall of the bearing body is arranged between two adjacent tilting guide pads, and the end parts of the two adjacent tilting guide pads are respectively movably attached to two end surfaces on the upper side of the elastic body;
The bearing sleeve is characterized in that the outer end wall of the bearing sleeve is annularly provided with oil inlet holes extending to the inner hole end wall of the bearing body, a plurality of oil inlet holes correspond to a plurality of elastic bodies in a one-to-one mode, oil injection pipe columns extending to the elastic bodies are inserted into the oil inlet holes, the elastic bodies are provided with a plurality of oil drain holes which are communicated with the oil injection pipe columns and extend to the outer end wall of the elastic bodies, and the front end wall and the rear end wall of the bearing sleeve are fixedly embedded with cover plates which are propped against the outer wall of the bearing body.
Furthermore, the bearing body and the bearing sleeve are arranged into semi-annular structures which are mutually butted up and down, and the upper bearing sleeve and the lower bearing sleeve are fixedly connected through a locking structure.
Further, the tilting pad and the front and back end surfaces of the elastomer matching structure are arranged in a flush manner and positioned on the inner side of the bearing body, the front and back end walls of the bearing sleeve are provided with outer mounting grooves for sealing and mounting the cover plate, the inner end surface of the cover plate is provided with annular grooves in a stepped structure, and the inner end surface of the cover plate is respectively propped against the outer mounting grooves, the bearing body and the tilting pad from outside to inside.
Further, a movable groove for swinging the raised head to rotate is formed in the end face of the inner hole of the bearing body, rotating grooves are formed in the front end and the rear end of the swinging raised head, a rotating shaft which penetrates through the outer side of the bearing body movably is sleeved in the rotating grooves, and a swinging space is reserved between the tilting guide shoe and the inner wall of the bearing body, so that the tilting guide shoe can swing left and right along the rotating shaft.
Further, a rotating groove matched with the position of the rotating shaft is formed in the annular groove in the middle of the cover plate, the outer end of the rotating shaft penetrates into the rotating groove, sealing, butt joint and installation of the bearing body, the plurality of tilting guide shoes and the elastic body are achieved, the diameter of an inner hole of the cover plate is slightly larger than that of an inner hole formed by the plurality of tilting guide shoes, and installation of the shaft neck on the inner side of the plurality of tilting guide shoes is not affected.
Further, the elastic body comprises a bearing valve, an inner buffer valve and an outer buffer valve which are sequentially distributed from inside to outside, and the arc-shaped lengths of the bearing valve, the inner buffer valve and the outer buffer valve are gradually increased and are fixedly connected to the end wall of the inner hole of the bearing body.
Further, outer buffering lamella and interior buffering lamella are the arc structure that adopts elastic material to make and keep away from outside salient in bearing body inner wall one side, all form the buffer tank between bearing lamella, interior buffering lamella and the outer buffering lamella two by two, outer buffering lamella keep away from the outer terminal surface both sides of interior buffering lamella one side all offered with tilting guide shoe tip assorted inclination spout, and tilting guide shoe tip be with the chamfer structure of inclination spout slip inlay establish the contact, the middle part outer end wall that outer buffering lamella kept away from bearing body one side is in same periphery with tilting guide shoe inner wall, outer buffering lamella set up between adjacent two tilting guide shoe tip and with its sliding contact.
Furthermore, the inner end of the oil injection pipe column penetrates through the bearing valve and extends into the buffer groove positioned on the inner side, the oil drain holes are uniformly formed in the middle end walls of the inner buffer valve and the outer buffer valve, the inner and outer penetrating arrangement of the oil drain holes are utilized to inject lubricating oil into the buffer groove, the lubricating oil is filled into the two buffer grooves and then is led into the outer side of the outer buffer valve through the oil drain holes, and an oil film is formed between the outer end face of the shaft neck and the tilting guide shoe.
Compared with the prior art, the invention has the advantages that:
(1) According to the scheme, elastic bodies which are in sliding contact with the end parts and are connected with the inner wall of the bearing body are additionally arranged between two adjacent tilting guide shoes, the elastic bodies are distributed in an annular and equal mode, the elastic bodies play a role in lifting the end parts of the tilting guide shoes under the normal operation state of the shaft neck, when the shaft neck is slightly out of centering or is changed, the tilting guide shoes swing along with the load and speed change of the shaft neck to adjust the inclination of the tilting guide shoes to realize the aligning function, at the moment, the elastic bodies play a role in buffering and protecting the tilting guide shoes in the swinging process, the excessive vibration force caused by the shaft neck to the tilting guide shoes is resisted, the buffering and supporting effect is achieved on the tilting guide shoes in the aligning process, and the tilting guide shoes are matched to play a role in fine-tuning and guiding the shaft neck.
(2) According to the scheme, the elastic body is further optimized, the elastic body comprises the bearing petals, the inner buffer petals and the outer buffer petals which are sequentially distributed from inside to outside, the bearing petals are made of hard materials, a mechanical supporting effect is achieved on an elastic matching structure of the inner buffer petals and the outer buffer petals, buffer grooves are formed between the bearing petals, the inner buffer petals and the outer buffer petals, the elastic body is communicated with an oil injection pipe column inserted in an oil inlet hole, lubricating oil is conveniently led to a position between a shaft neck and an end wall of an inclinable guide shoe to form a first oil film, lubricating oil injected into the buffer grooves also forms an inner oil film and an outer oil film, and the elastic buffering effect of the elastic matching structure of the outer buffer petals and the inner buffer petals on the elastic body is further improved.
Drawings
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a second exploded view of the present invention;
FIG. 4 is a schematic view of the structure of the bearing body and the bearing housing of the present invention when they are separated;
FIG. 5 is a schematic diagram of the structure shown at A in FIG. 4;
FIG. 6 is a schematic view of the joint between the bearing body and the plurality of groups of tilting guide shoes and between the bearing body and the plurality of groups of elastic bodies;
FIG. 7 is a side cross-sectional view of the present invention;
Fig. 8 is a schematic diagram of the structure at B in fig. 7.
The reference numerals in the figures illustrate:
1. A bearing body; 2. a tilting pad; 3. bearing bush, 301, inner mounting groove; 302. an outer mounting groove; 4. swinging the raised head; 401. a rotating shaft; 5. an outer buffer flap; 501. slope chute; 6. an inner buffer flap; 7. supporting the petals; 8. a tubing string; 9. a cover plate; 901. the groove is rotated.
Detailed Description
The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only a few embodiments of the present invention; but not all embodiments, are based on embodiments in the present invention; all other embodiments obtained by those skilled in the art without undue burden; all falling within the scope of the present invention.
Example 1
The invention discloses an inclinable tile sliding bearing with a self-adaptive aligning function for a centrifugal compressor, referring to fig. 1-4, which comprises a bearing body 1, wherein a bearing sleeve 3 is sleeved outside the bearing body 1, an inner mounting groove 301 for embedding and mounting the bearing body 1 is formed in the inner end wall of the bearing sleeve 3, the bearing body 1 is of an annular structure matched with the inner mounting groove 301, the inner end part of the bearing body 1 is exposed out of the inner end part of the bearing sleeve 3, the bearing body 1 and the bearing sleeve 3 are both arranged into a semi-annular structure which is mutually butted up and down, and the upper bearing sleeve 3 and the lower bearing sleeve 3 are fixedly connected through a locking structure, so that the installation is convenient.
Referring to fig. 6, a plurality of tilting guide shoes 2 are annularly distributed on the inner hole end surface of the bearing body 1, the inner ends of the tilting guide shoes 2 are fixedly connected with swing bosses 4 movably embedded on the inner hole end surface of the bearing body 1, movable grooves for the swing bosses 4 to rotate are formed on the inner hole end surface of the bearing body 1, rotating grooves are formed in the front end and the rear end of the swing bosses 4, rotating shafts 401 which movably penetrate through the outer sides of the bearing body 1 are sleeved in the rotating grooves, and a swing space is reserved between the tilting guide shoes 2 and the inner wall of the bearing body 1, so that the tilting guide shoes 2 can swing left and right along the rotating shafts 401.
Referring to fig. 3-4, an elastic body fixedly connected to the inner hole end wall of the bearing body 1 is arranged between two adjacent tilting guide shoes 2, the end parts of the two adjacent tilting guide shoes 2 are respectively movably attached to two end surfaces on the upper side of the elastic body, oil inlet holes extending to the inner hole end wall of the bearing body 1 are annularly formed in the outer end wall of the bearing sleeve 3, a plurality of oil inlet holes are in one-to-one correspondence with a plurality of elastic bodies, an oil injection pipe column 8 extending to the elastic body is inserted in the oil inlet holes, a plurality of oil drain holes communicated with the oil injection pipe column 8 and extending to the outer end wall of the oil injection pipe column are formed in the elastic body, and a cover plate 9 which is arranged against the outer wall of the bearing body 1 is fixedly embedded in the front end wall and the rear end wall of the bearing sleeve 3.
The tilting pad 2 and the front end face and the rear end face of the elastomer matching structure are arranged in a flush manner and positioned on the inner side of the bearing body 1, the front end wall and the rear end wall of the bearing sleeve 3 are provided with outer mounting grooves 302 for sealing and mounting the cover plate 9, the inner end face of the cover plate 9 is provided with annular grooves which are of a ladder-shaped structure, the inner end face of the cover plate 9 is respectively propped against the outer mounting grooves 302, the bearing body 1 and the tilting pad 2 from outside to inside, the annular grooves in the middle of the cover plate 9 are provided with rotating grooves 901 matched with the positions of the rotating shafts 401, the outer ends of the rotating shafts 401 penetrate into the rotating grooves 901, sealing and butt joint mounting of the bearing body 1 and the matching structures of the tilting pads 2 and the elastomer is realized, and the diameter of the inner holes of the cover plate 9 is slightly larger than that of the inner holes formed by the tilting pads 2, so that the installation of the inner side journals of the tilting pads 2 is not influenced.
When the bearing is in operation, a plurality of tilting guide shoes 2 and elastic bodies are firstly arranged on the inner wall of a bearing body 1, then the bearing body 1 is embedded and arranged in the inner mounting grooves 301 of the upper bearing sleeve 3 and the lower bearing sleeve 3 step by step, a rotating shaft 401 penetrates through the bearing body 1 and extends into the rotating grooves of the swinging raised heads 4, the upper bearing sleeve 3 and the lower bearing sleeve 3 are in butt joint and are then subjected to limit on the bearing body 1, at the moment, two cover plates 9 are in butt joint and are arranged at the front end and the rear end of the bearing sleeve 3, a plurality of rotating shafts 401 are in one-to-one inserting connection with a plurality of rotating grooves 901 on the cover plates 9, the inner end faces of the cover plates 9 are respectively propped against the outer mounting grooves 302, the bearing body 1 and the tilting guide shoes 2 from outside to inside, and the cover plates 9 are also fixedly connected with the inner wall of the outer mounting grooves 302 through locking structures such as mounting bolts, so that the assembly of the whole bearing is realized.
By additionally arranging an elastic body which is in sliding contact with the end parts and is connected with the inner wall of the bearing body 1 between two adjacent tilting guide shoes 2, a plurality of elastic bodies are distributed in an annular and equal manner, the elastic bodies are in sliding contact with the end parts of the tilting guide shoes 2 all the time, the elastic bodies do not occupy the reserved swinging space between the tilting guide shoes 2 and the bearing body 1, and the swinging of the end parts of the tilting guide shoes 2 is guided and buffered on the premise of not influencing the normal swinging and aligning of the tilting guide shoes 2;
Under the normal operation state of the journal, the elastic body plays a role in lifting the end part of the tilting guide shoe 2, so that larger load force borne by the tilting guide shoe 2 is shared, when the journal is slightly misaligned or changed, the tilting guide shoe 2 swings along with the load and speed change of the journal to adjust the inclination of the journal to realize the aligning function, at the moment, the elastic body plays a role in buffering and protecting the tilting guide shoe 2 in the swinging process, resists excessive vibration force of the journal on the tilting guide shoe 2, plays a role in buffering and supporting the tilting guide shoe 2 in the aligning process, and plays a role in fine-tuning and guiding the journal by matching with the tilting guide shoe 2.
Example 2
This example further optimizes the elastomer based on example 1, as follows:
Referring to fig. 4-5 and fig. 7-8, the elastic body comprises a bearing lobe 7, an inner buffer lobe 6 and an outer buffer lobe 5 which are sequentially distributed from inside to outside, the arc lengths of the bearing lobe 7, the inner buffer lobe 6 and the outer buffer lobe 5 are gradually increased and are fixedly connected to the end wall of the inner hole of the bearing body 1, the outer buffer lobe 5 and the inner buffer lobe 6 are arc structures which are made of elastic materials and are outwards protruded away from one side of the inner wall of the bearing body 1, buffer grooves are formed between the bearing lobe 7, the inner buffer lobe 6 and the outer buffer lobe 5, inclined slide grooves 501 matched with the end parts of the tilting guide tiles 2 are formed in two sides of the outer end surface of the outer buffer lobe 5, which is far away from one side of the inner buffer lobe 6, of the tilting guide tiles 2 are of a tilting structure which is in sliding embedded contact with the inclined slide grooves 501, the middle outer end wall of one side of the outer buffer lobe 5 is located on the same circumference surface of the bearing body 1, the outer buffer lobe 5 is arranged between the end parts of two adjacent tilting guide tiles 2 and is in sliding contact with the tilting guide tiles 2, the tilting guide tiles are slightly arranged between the end parts of the adjacent tilting guide tiles 2, the tilting guide tiles are in a state, the tilting guide tiles 2 are not in a proper motion, and the tilting guide tile structure can realize a function, and the tilting effect of the tilting guide tile 2 is slightly has a function, and a function of adjusting the tilting effect can be realized, and the tilting effect can realize when the tilting effect is different along with the tilting effect of the tilting pad structure and has a normal, and the tilting effect can realize when the tilting effect and has a function and a function.
The inner end of the oil injection pipe column 8 penetrates through the bearing valve 7 and extends into the buffer groove positioned on the inner side, the oil drain holes are uniformly formed in the middle end walls of the inner buffer valve 6 and the outer buffer valve 5, the oil drain holes are internally and externally penetrated, lubricating oil is injected into the buffer grooves by the oil injection pipe column 8, the lubricating oil is filled into the two buffer grooves and is led into the outer side of the outer buffer valve 5 through the oil drain holes, a first oil film is formed between the outer end face of the shaft neck and the tilting guide bush 2, and the multipoint lead-in of the lubricating oil is realized.
The bearing valve 7 is made of hard materials, plays a mechanical supporting role on the matching structure of the inner buffer valve 6 and the outer buffer valve 5, and lubricating oil injected into the buffer groove also forms an inner second oil film and an outer second oil film, and the elastic buffer effect of the matching structure of the outer buffer valve 5 and the inner buffer valve 6 on the elastic body is further improved, so that the compression resistance and vibration reduction effect of the bearing valve are further improved, the tilting pad 2 is buffered and supported in the aligning process, the tilting pad 2 is matched, the trimming guide effect is also played on the journal, and the double aligning effect is achieved.
In summary, the elastic bodies which are in sliding contact with the end parts of the adjacent two tilting guide shoes 2 and are connected with the inner wall of the bearing body 1 are additionally arranged between the two tilting guide shoes 2, the elastic bodies are distributed annularly and uniformly, the elastic bodies play a role in lifting the end parts of the tilting guide shoes 2 in the normal operation state of the shaft neck, when the shaft neck is slightly out of centering or changing, the tilting guide shoes 2 play a role in buffering and protecting the tilting guide shoes 2 in the self-swinging and aligning process, the excessive vibration force caused by the shaft neck to the tilting guide shoes 2 is resisted, and the tilting guide shoes 2 are matched to play a role in fine-tuning and guiding the shaft neck;
The first oil film is formed by the lubricating oil led in from the elastomer to the journal and the end wall of the tilting pad 2, and the second oil film is formed by the lubricating oil injected into the two buffer grooves of the elastomer, and the compression and vibration reduction effects are further improved by matching the elastic buffer effect of the outer buffer valve 5 and the inner buffer valve 6 on the elastomer and the self structure.
The above; is only a preferred embodiment of the present invention; the scope of the invention is not limited in this respect; any person skilled in the art is within the technical scope of the present disclosure; equivalent substitutions or changes are made according to the technical proposal of the invention and the improved conception thereof; are intended to be encompassed within the scope of the present invention.
Claims (5)
1. Tilting pad sliding bearing for centrifugal compressor with self-adaptation aligning function, including bearing body (1), bearing body (1) outside cover is equipped with bearing housing (3), its characterized in that: an inner mounting groove (301) for embedding and mounting the bearing body (1) is formed in the inner end wall of the bearing sleeve (3), a plurality of tilting guide shoes (2) are annularly distributed on the inner hole end surface of the bearing body (1), the inner ends of the tilting guide shoes (2) are fixedly connected with swing raised heads (4) which are movably embedded on the inner hole end surface of the bearing body (1), an elastic body which is fixedly connected on the inner hole end wall of the bearing body (1) is arranged between every two adjacent tilting guide shoes (2), and the end parts of every two adjacent tilting guide shoes (2) are respectively movably attached to two end surfaces on the upper side of the elastic body;
The bearing sleeve (3) is characterized in that the outer end wall of the bearing sleeve (3) is annularly provided with oil inlet holes extending to the inner hole end wall of the bearing body (1), a plurality of oil inlet holes are in one-to-one correspondence with a plurality of elastic bodies, oil injection pipe columns (8) extending into the elastic bodies are inserted in the oil inlet holes, a plurality of oil drain holes which are communicated with the oil injection pipe columns (8) and extend to the outer end wall of the oil injection pipe columns are formed in the elastic bodies, and cover plates (9) which are propped against the outer wall of the bearing body (1) are fixedly embedded in the front end wall and the rear end wall of the bearing sleeve (3);
The elastic body comprises a bearing valve (7), an inner buffer valve (6) and an outer buffer valve (5) which are sequentially distributed from inside to outside, wherein the arc-shaped length of the bearing valve (7), the inner buffer valve (6) and the arc-shaped length of the outer buffer valve (5) are gradually increased and are fixedly connected to the end wall of an inner hole of a bearing body (1), the outer buffer valve (5) and the inner buffer valve (6) are of arc-shaped structures which are made of elastic materials and are far away from the inner wall of the bearing body (1) and are outwards protruded from one side, buffer grooves are formed between the bearing valve (7), the inner buffer valve (6) and the outer buffer valve (5) respectively, inclined sliding grooves (501) which are matched with the end parts of the inclined guide shoes (2) are respectively formed in the two sides of the outer end faces of the outer buffer valve (5), the end parts of the inclined guide shoes (2) are of round angle structures which are in sliding embedding contact with the inclined sliding grooves (501), the inner ends of the oil filling pipe columns (8) penetrate through the bearing valve (7) and extend into the buffer grooves which are located inside, and the middle parts of the oil drain holes are evenly formed in the inner end walls (6) and the inner end walls of the buffer valve (5) respectively.
2. The tilting pad sliding bearing for centrifugal compressor with self-adaptive centering function according to claim 1, wherein: the bearing body (1) and the bearing sleeve (3) are arranged into semi-annular structures which are mutually butted up and down, and the upper bearing sleeve and the lower bearing sleeve (3) are fixedly connected through a locking structure.
3. The tilting pad sliding bearing for centrifugal compressor with self-adaptive centering function according to claim 1, wherein: the tilting pad (2) and the elastic body fit structure are arranged in a flush manner and located on the inner side of the bearing body (1), an outer mounting groove (302) for sealing and mounting the cover plate (9) is formed in the front end wall and the rear end wall of the bearing sleeve (3), an annular groove with a stepped structure is formed in the inner end surface of the cover plate (9), and the inner end surface of the cover plate (9) is respectively arranged against the outer mounting groove (302), the bearing body (1) and the tilting pad (2) from outside to inside.
4. The tilting pad sliding bearing for centrifugal compressor with self-adaptive centering function according to claim 3, wherein: the bearing is characterized in that a movable groove for the rotation of the swing raised head (4) is formed in the end face of the inner hole of the bearing body (1), rotating grooves are formed in the front end and the rear end of the swing raised head (4), and a rotating shaft (401) which movably penetrates to the outer side of the bearing body (1) is sleeved in the rotating grooves.
5. The tilting pad sliding bearing for centrifugal compressor with self-adaptive centering function according to claim 4, wherein: a rotating groove (901) matched with the rotating shaft (401) in position is formed in the annular groove in the middle of the cover plate (9), and the outer end of the rotating shaft (401) penetrates into the rotating groove (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311533477.1A CN117469291B (en) | 2023-11-17 | 2023-11-17 | Tilting pad sliding bearing with self-adaptive aligning function for centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311533477.1A CN117469291B (en) | 2023-11-17 | 2023-11-17 | Tilting pad sliding bearing with self-adaptive aligning function for centrifugal compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117469291A CN117469291A (en) | 2024-01-30 |
| CN117469291B true CN117469291B (en) | 2024-04-30 |
Family
ID=89631131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311533477.1A Active CN117469291B (en) | 2023-11-17 | 2023-11-17 | Tilting pad sliding bearing with self-adaptive aligning function for centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117469291B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4337985A (en) * | 1979-05-19 | 1982-07-06 | Glyco-Maschinenbau Gmbh | Pivoted shoe bearing |
| CN207470604U (en) * | 2017-11-22 | 2018-06-08 | 中车集团台州第七八一六工厂 | A kind of bush(ing) bearing |
| KR102009110B1 (en) * | 2018-04-16 | 2019-08-08 | 국민대학교산학협력단 | Journal bearing |
| CN111120506A (en) * | 2020-01-21 | 2020-05-08 | 河北工程大学 | Double-pivot sliding bearing |
| CN111365364A (en) * | 2020-04-21 | 2020-07-03 | 东莞台一盈拓科技股份有限公司 | Tilting pad dynamic pressure bearing |
| CN111927874A (en) * | 2020-06-29 | 2020-11-13 | 东方电气集团东方汽轮机有限公司 | Sliding thrust bearing for realizing load uniform distribution among tiles through cam linkage |
| CN114321157A (en) * | 2021-12-31 | 2022-04-12 | 湖南崇德科技股份有限公司 | Bearing assembly for wind driven generator |
| JP2022075371A (en) * | 2020-11-06 | 2022-05-18 | 株式会社日立インダストリアルプロダクツ | Tilting pad type journal bearing and rotary machine comprising the same |
| CN218882787U (en) * | 2023-02-07 | 2023-04-18 | 陕西科技大学 | Tilting pad radial sliding bearing with oil injection mechanism |
-
2023
- 2023-11-17 CN CN202311533477.1A patent/CN117469291B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4337985A (en) * | 1979-05-19 | 1982-07-06 | Glyco-Maschinenbau Gmbh | Pivoted shoe bearing |
| CN207470604U (en) * | 2017-11-22 | 2018-06-08 | 中车集团台州第七八一六工厂 | A kind of bush(ing) bearing |
| KR102009110B1 (en) * | 2018-04-16 | 2019-08-08 | 국민대학교산학협력단 | Journal bearing |
| CN111120506A (en) * | 2020-01-21 | 2020-05-08 | 河北工程大学 | Double-pivot sliding bearing |
| CN111365364A (en) * | 2020-04-21 | 2020-07-03 | 东莞台一盈拓科技股份有限公司 | Tilting pad dynamic pressure bearing |
| CN111927874A (en) * | 2020-06-29 | 2020-11-13 | 东方电气集团东方汽轮机有限公司 | Sliding thrust bearing for realizing load uniform distribution among tiles through cam linkage |
| JP2022075371A (en) * | 2020-11-06 | 2022-05-18 | 株式会社日立インダストリアルプロダクツ | Tilting pad type journal bearing and rotary machine comprising the same |
| CN114321157A (en) * | 2021-12-31 | 2022-04-12 | 湖南崇德科技股份有限公司 | Bearing assembly for wind driven generator |
| CN218882787U (en) * | 2023-02-07 | 2023-04-18 | 陕西科技大学 | Tilting pad radial sliding bearing with oil injection mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117469291A (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3682044A (en) | Balanced hydraulic device | |
| US20080190669A1 (en) | Bearing assembly for downhole mud motor | |
| KR101318554B1 (en) | Thrust bearing lubrication nozzle | |
| CN117469291B (en) | Tilting pad sliding bearing with self-adaptive aligning function for centrifugal compressor | |
| CA2556804A1 (en) | Hydrodynamic pump passages for rolling cone drill bit | |
| CN105003528A (en) | Linkage type self-balancing water-lubricated thrust bearing | |
| CN109594672B (en) | Friction pendulum shock insulation system | |
| US3747476A (en) | Balanced hydraulic device | |
| CN208089766U (en) | A kind of bearing arrangement based on sinking support | |
| JPS6147328B2 (en) | ||
| EP1149224B1 (en) | Thrust bearing for downhole tool | |
| CN217081117U (en) | Tilting pad bearing with adjustable fulcrum | |
| CN110388380A (en) | A kind of compound thrust bearing of adaptive skid of turbodrill | |
| CN210508771U (en) | Super-load-bearing type door body ground shaft | |
| US2063570A (en) | Bearing | |
| CN209179703U (en) | A kind of aperture centralizer | |
| US4417773A (en) | Ball swivel joint for an excavator or the like | |
| CN209704529U (en) | One kind can bore sizing collar | |
| RU2136836C1 (en) | Bearing support | |
| RU2011776C1 (en) | Spindle of face motor | |
| CN217594669U (en) | Piston shaking prevention type splitting machine | |
| US1268906A (en) | Bearing. | |
| CN215806816U (en) | Construction pipeline installation mechanism for drinking water safety | |
| CA1157463A (en) | Floating seal for earth boring bit | |
| CN219510012U (en) | High-strength bearing bush forging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |