CN109654035B - Multi-disc uniform load carrier - Google Patents
Multi-disc uniform load carrier Download PDFInfo
- Publication number
- CN109654035B CN109654035B CN201910116057.0A CN201910116057A CN109654035B CN 109654035 B CN109654035 B CN 109654035B CN 201910116057 A CN201910116057 A CN 201910116057A CN 109654035 B CN109654035 B CN 109654035B
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- Prior art keywords
- bearing
- disc
- sleeve
- thrust
- shaft
- 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.)
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- 230000007704 transition Effects 0.000 claims description 12
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
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- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
- F04D29/044—Arrangements for joining or assembling shafts
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
Abstract
The invention relates to a multi-disc uniform load carrier for a medium-sized and small-sized submerged electric pump, which comprises a shell, a bearing shaft arranged in the shell, a first bearing device arranged at the shaft shoulder of the bearing shaft and a second bearing device arranged below the first bearing device; the first bearing device comprises a thrust disc I fixed on a bearing shaft, a sleeve I arranged below the thrust disc I, a thrust bearing I, a bearing disc I and a disc spring I which are sequentially sleeved on the outer side of the sleeve I from top to bottom, wherein the upper end of the disc spring I is contacted with the bearing disc I, and the lower end of the disc spring I is contacted with the shell; the bearing shaft of the multi-disc uniform load bearing is connected with a plurality of thrust bearings in series, each bearing seat is provided with an elastic support formed by a disc spring, so that a plurality of thrust bearings can bear simultaneously, the uniform load of a plurality of thrust bearings is realized, the load of a single bearing is relatively reduced, and the service life of the bearing can be effectively prolonged.
Description
Technical Field
The invention relates to a multi-disc uniform load carrier for a small and medium-sized submersible electric pump, which is used for bearing axial force generated during the operation of a water pump and is particularly suitable for a high-lift submersible electric pump.
Background
The submerged motor pump mainly comprises a water pump, a motor and a carrier, wherein the carrier mainly comprises a bearing shaft, a thrust disc and a thrust bearing, and is generally arranged between the water pump and the motor or below the motor and used for bearing axial force generated when the water pump works. With the increasing of water consumption and the increasing of arid weather, the groundwater level of some regions is continuously reduced, and particularly, the demand of the high-lift submersible pump is obviously increased in mountain construction with difficult water consumption. The increase of the lift tends to cause the increase of motor power and axial force of the water pump, the bearing capacity and service life of the original thrust bearing can not meet the requirements, and analysis and research on bearing materials and structures are needed. Some pump manufacturers start from materials, try to improve the service life of the bearing by improving the material performance of the bearing, and the material performance is improved, but the bearing specific pressure is overlarge because the size of the bearing cannot be enlarged, the bearing abrasion is still serious, and the effect is not ideal. Some want to connect two or three thrust bearings in series on the bearing shaft, in order to reduce the load of each thrust bearing, reduce the specific pressure, to improve the life-span of the bearing, but because all are rigid couplings between each thrust disc and between each thrust bearing, belong to the hyperstatic structure, it is difficult to realize several bearings bear at the same time, has just not realized the purpose that reduces the specific pressure of single bearing and improves the life-span.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the multi-disc uniform load carrier which adopts the elastic support to realize the simultaneous load bearing of a plurality of thrust bearings connected in series, reduce the load of a single bearing and prolong the service life of the bearing.
The technical scheme adopted by the invention is as follows: a multi-disc uniform load carrier comprises a shell, a bearing shaft arranged in the shell, a first bearing device arranged at a shaft shoulder of the bearing shaft and a second bearing device arranged below the first bearing device; the first bearing device comprises a thrust disc I fixed on a bearing shaft, a sleeve I arranged below the thrust disc I, and a thrust bearing I, a bearing disc I and a disc spring I which are sequentially sleeved on the outer side of the sleeve I from top to bottom, wherein the upper end of the disc spring I is in contact with the bearing disc I, and the lower end of the disc spring I is in contact with the shell.
The second bearing device is arranged at the lower end of the sleeve I and comprises a thrust disc II fixed on a bearing shaft, a sleeve II arranged below the thrust disc II, a thrust bearing II, a bearing disc II and a belleville spring II which are sleeved on the outer side of the sleeve II in sequence from top to bottom, the upper end of the belleville spring II is in contact with the bearing disc II, the lower end of the belleville spring II is in contact with the shell, and the thrust disc II is fixedly arranged at the lower end of the sleeve I through a connecting key II; the lower end of the sleeve II is sequentially provided with a retainer ring, an elastic washer and a fixing nut.
A guide flat key I is arranged between the bearing plate I and the shell, and a guide flat key II is arranged between the bearing plate II and the shell; the bearing plate I is fixedly connected with the guide flat key I through a small fastening screw I, and the bearing plate II is fixedly connected with the guide flat key II through a small fastening screw II.
The thrust bearing I is fixedly connected with the supporting tray I through a fastening screw I; the thrust bearing II is fixedly connected with the supporting tray II through a fastening screw II.
The shell comprises an upper connecting sleeve, an upper transition sleeve, a supporting sleeve I, a supporting sleeve II, a lower transition sleeve and a lower connecting sleeve which are sequentially arranged from top to bottom, wherein the first bearing device is arranged in the supporting sleeve I, and the second bearing device is arranged in the supporting sleeve II.
The invention has the positive effects that: the invention is provided with the thrust bearing and the disc spring on the bearing shaft, when the bearing shaft is in operation, the bearing shaft is subjected to axial force and can drive the thrust disc and the bearing disc to move in a downward serial manner, the disc spring is in compression deformation and can provide reaction force to resist the serial movement of the bearing shaft, so that an elastic bearing is formed, and the larger the axial force of the bearing shaft is, the larger the deformation of the disc spring is, the larger the reaction force of the disc spring is, and the downward axial force of the disc spring is resisted when the water pump is in operation. When the bearing shaft is stressed, the thrust disc and the bearing disc of each bearing device are simultaneously and downwards strung, the belleville springs are pressed and deformed, and simultaneously provide a reaction force, and each belleville spring can generate a deformation reaction force, and the deformation reaction force is applied to the bearing shaft through the thrust disc, so that the bearing problem of a single bearing can not occur, the load of the single bearing is relatively reduced, and the service life of the bearing can be greatly prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the bearing shaft of the present invention.
In the figure, the upper connecting sleeve 2, the bearing shaft 3, the sealing sleeve 4, the screw rod 5, the first nut 6, the first connecting elastic washer 7, the upper transition sleeve 8, the sliding bearing I, 9, the connecting key I, the push disk I, 11, the fastening screw I, 12, the thrust bearing I, 13, the small fastening screw I, 14, the bearing disk I, 15, the guide flat key I, 16, the disc spring I, 17, the supporting sleeve I, 18, the sleeve I, 19, the lower transition sleeve 20, the sliding bearing II, 21, the second connecting elastic washer 22, the second nut 23, the lower connecting sleeve 24, the fixing nut 25, the elastic washer 26, the retainer ring 27, the sleeve 28, the supporting sleeve II, 29, the spring II, 30, the disk II, 31, the guide flat key II, 32, the small fastening screw II, 33, 34, the thrust disk II, 35, 36, the connecting key II, 2-1, the first shaft shoulder 2-2, the key groove 2-2, 3, the key groove 2-4, the key groove 2-key groove 6, the second key groove 5 and the screw groove 2-5.
Detailed Description
As shown in fig. 1 and 2, the invention comprises a shell, a bearing shaft 2 arranged in the shell, a first bearing device arranged at a shaft shoulder 2-2 of the bearing shaft 2 and a second bearing device arranged below the first bearing device; the first bearing device comprises a thrust disc I10, a thrust bearing I12, a bearing disc I14 and a disc spring I16 which are sequentially sleeved on the bearing shaft 2 from top to bottom, the upper end of the disc spring I16 is in contact with the bearing disc I14, the lower end of the disc spring I16 is in contact with the shell, and the thrust disc I10 is fixedly arranged at a shaft shoulder 2-2 of the bearing shaft 2 through a connecting key I9. A guide flat key I15 is arranged between the bearing plate I14 and the shell, and the thrust bearing I12 is fixedly connected with the bearing plate I14 through a fastening screw I11.
The bearing shaft 2 is further provided with a sleeve I18, the upper end of the sleeve I18 is in contact with the thrust disc I10, and the second bearing device is located at the lower end of the sleeve I18. The thrust bearing I12, the supporting disk I14 and the disc spring I16 are all sleeved on the outer side of the sleeve I18.
The second bearing device comprises a thrust disc II 34, a thrust bearing II 33, a bearing disc II 30 and a disc spring II 29 which are sleeved on the bearing shaft 2 in sequence from top to bottom, the upper end of the disc spring II 29 is contacted with the bearing disc II 30, the lower end of the disc spring II is contacted with the shell, and the thrust disc II 34 is fixedly arranged at the lower end of the sleeve I18 through a connecting key II 36. The sleeve II 27 is arranged below the thrust disc II 34, the thrust bearing II 33, the bearing disc II 30 and the belleville spring II 29 are all sleeved outside the sleeve II 27, and the retainer ring 26, the elastic washer 25 and the fixing nut 24 are sequentially arranged at the lower end of the sleeve II 27. The thrust bearing II 33 is fixedly connected with the bearing plate II 30 through a fastening screw II 35.
A guide flat key II 31 is arranged between the bearing plate II 30 and the shell.
The shell comprises an upper connecting sleeve 1, an upper transition sleeve 7, a supporting sleeve I17, a supporting sleeve II 28, a lower transition sleeve 19 and a lower connecting sleeve 23 which are sequentially arranged from top to bottom, wherein a first bearing device is arranged in the supporting sleeve I17, and a second bearing device is arranged in the supporting sleeve II 28. The upper connecting sleeve 1, the upper transition sleeve 7, the supporting sleeve I17, the supporting sleeve II 28, the lower transition sleeve 19 and the lower connecting sleeve 23 are fixed together by a screw 4, a first nut 5, a first connecting elastic washer 6, a second connecting elastic washer 21 and a second nut 22.
Besides, a sealing sleeve 3 is arranged between the bearing shaft 2 and the housing, a sliding bearing I8 is arranged between the bearing shaft 2 and the upper transition sleeve 7, a sliding bearing II 20 is arranged between the bearing shaft 2 and the lower transition sleeve 19, a small fastening screw I13 is arranged on the outer side of the bearing plate I14, and a small fastening screw II 32 is arranged on the outer side of the bearing plate II 30.
The two ends of the bearing shaft 2 are respectively provided with a first key groove 2-1 and a second key groove 2-6, the middle part of the bearing shaft 2 is provided with a key groove I2-3 and a key groove II 2-4 for installing a thrust disc I10 and a thrust disc II 34, and the bearing shaft 2 is also provided with a thread 2-5 for installing a fixing nut 24. The key grooves I2-3 and the key grooves II 2-4 form circumferential positioning of the thrust disc I10 and the thrust disc II 34; the sleeve I18 is arranged between the thrust disc I10 and the thrust disc II 34, the sleeve II 27 is arranged between the thrust disc II 34 and the retainer ring 26, and forms reliable and accurate axial positioning with the upper shaft shoulder 2-2, the lower retainer ring 26, the elastic washer 25 and the fixing nut 24 in a matched manner to the thrust disc I10 and the thrust disc II 34; the bearing plate I14 and the bearing plate II 30 are made of steel materials, a thrust bearing I12 and a thrust bearing II 33 are respectively fixed on the bearing plate I and the bearing plate II, the strength of the thrust bearing is improved, and guide key grooves and threaded holes are formed in the outer side edges of the bearing plate I14 and the bearing plate II 30 and used for placing and fixing guide flat keys; the inner sides of the supporting sleeve I17 and the supporting sleeve II 28 are provided with guide grooves which are matched with the guide flat keys to guide the supporting plate I14 and the supporting plate II; the disc springs I16 and II 29 are respectively arranged in the supporting sleeves I17 and II 28 and below the thrust discs I10 and II 34, and the disc springs I16 and II 29 can be singly used, or a plurality of the disc springs I and II 29 can be overlapped or oppositely or back-mounted according to the requirement of the product on the elasticity coefficient.
When the water pump works, downward axial force is applied to the upper end of the bearing shaft 2, the bearing shaft 2 drives the thrust disc I10 and the thrust disc II 34 to simultaneously and downwards move in a series under the action of the force, so that the bearing disc I14 and the bearing disc II 30 are triggered to simultaneously and downwards move in series, the belleville springs I16 and II 29 are pressed and deformed, the belleville springs I16 and II 29 simultaneously apply counter force to the thrust disc I10 and the thrust disc II 34 to resist the series movement of the bearing shaft 2, and the larger the downward axial force of the bearing shaft 2 is, the larger the deformation of the belleville springs I16 and II 29 is, and the counter force is larger, so that the combined action resists the downward axial force of the water pump during work. Because the deformation of the disc springs I16 and II 29 is generated simultaneously, each disc spring can generate deformation counter force and is applied to the bearing shaft 2 through the thrust disc, the bearing problem of a single bearing can not occur, the load of the single bearing is relatively reduced, and the service life of the bearing can be greatly prolonged.
In order to improve the working effect, the elastic bearing of the bearing can be preloaded through the connection and assembly of the water pump and the bearing carrier, so that the influence on the mechanical efficiency of the water pump caused by the overlarge axial serial movement of the impeller of the water pump during the full-load working of the water pump is avoided.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The multi-disc uniform load carrier is characterized by comprising a shell, a bearing shaft (2) arranged in the shell, a first bearing device arranged at a shaft shoulder (2-2) of the bearing shaft (2) and a second bearing device arranged below the first bearing device; the first bearing device comprises a thrust disc I (10) fixed on a bearing shaft (2), a sleeve I (18) arranged below the thrust disc I (10), a thrust bearing I (12), a bearing disc I (14) and a belleville spring I (16) which are sleeved outside the sleeve I (18) in sequence from top to bottom, wherein the upper end of the belleville spring I (16) is contacted with the bearing disc I (14) and the lower end of the belleville spring I is contacted with the shell;
the second bearing device is arranged at the lower end of the sleeve I and comprises a thrust disc II (34) fixed on the bearing shaft (2), a sleeve II (27) arranged below the thrust disc II (34), a thrust bearing II (33), a bearing disc II (30) and a belleville spring II (29) which are sequentially sleeved outside the sleeve II (27) from top to bottom, the upper end of the belleville spring II (29) is in contact with the bearing disc II (30) and the lower end of the belleville spring II is in contact with the shell, and the thrust disc II (34) is fixedly arranged at the lower end of the sleeve I (18) through a connecting key II (36); the lower end of the sleeve II (27) is sequentially provided with a retainer ring (26), an elastic washer (25) and a fixing nut (24).
2. A multi-tray load balancing carrier according to claim 1, characterized in that a guiding flat key i (15) is arranged between the supporting tray i (14) and the housing, and a guiding flat key ii (31) is arranged between the supporting tray ii (30) and the housing; the bearing plate I (14) is fixedly connected with the guide flat key I (15) through a small fastening screw I (13), and the bearing plate II (30) is fixedly connected with the guide flat key II (31) through a small fastening screw II (32).
3. A multiple-disc load carrier according to claim 1, characterized in that the thrust bearing i (12) is fixedly connected to the support disc i (14) by means of a fastening screw i (11); the thrust bearing II (33) is fixedly connected with the supporting plate II (30) through a fastening screw II (35).
4. A multi-tray load balancing carrier according to claim 1, characterized in that the housing comprises an upper connecting sleeve (1), an upper transition sleeve (7), a bearing sleeve i (17), a bearing sleeve ii (28), a lower transition sleeve (19) and a lower connecting sleeve (23) which are arranged in sequence from top to bottom, the first bearing means being arranged in the bearing sleeve i (17) and the second bearing means being arranged in the bearing sleeve ii (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910116057.0A CN109654035B (en) | 2019-02-15 | 2019-02-15 | Multi-disc uniform load carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910116057.0A CN109654035B (en) | 2019-02-15 | 2019-02-15 | Multi-disc uniform load carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109654035A CN109654035A (en) | 2019-04-19 |
| CN109654035B true CN109654035B (en) | 2024-02-13 |
Family
ID=66122463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910116057.0A Active CN109654035B (en) | 2019-02-15 | 2019-02-15 | Multi-disc uniform load carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109654035B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3916255B1 (en) * | 2020-05-26 | 2022-10-05 | Siemens Energy Global GmbH & Co. KG | Multi-stage axial bearings for turbines |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07103188A (en) * | 1993-10-08 | 1995-04-18 | Ebara Corp | Thrust bearing unit |
| CN2527748Y (en) * | 2001-11-21 | 2002-12-25 | 山西天海泵业有限公司 | Adjustable multistage thrust axial force bearing device |
| CN102588323A (en) * | 2012-03-16 | 2012-07-18 | 邱思婕 | Locking and transmission device of rotor components of vertical multi-stage pump |
| WO2015031544A1 (en) * | 2013-08-27 | 2015-03-05 | Schlumberger Canada Limited | Self-compliant bearing system for electric submersible pumps |
| CN105156340A (en) * | 2015-08-20 | 2015-12-16 | 天津市百成油田采油设备制造有限公司 | Inverse water-injection electric submersible pump system |
| CN209654262U (en) * | 2019-02-15 | 2019-11-19 | 河北工程大学 | A kind of polydisc carries carrier |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2969722B1 (en) * | 2010-12-22 | 2013-01-04 | Thermodyn | TORSIBLE COUPLING MOTORCOMPRESSOR UNIT LOCATED IN A HOLLOW COMPRESSOR SHAFT |
-
2019
- 2019-02-15 CN CN201910116057.0A patent/CN109654035B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07103188A (en) * | 1993-10-08 | 1995-04-18 | Ebara Corp | Thrust bearing unit |
| CN2527748Y (en) * | 2001-11-21 | 2002-12-25 | 山西天海泵业有限公司 | Adjustable multistage thrust axial force bearing device |
| CN102588323A (en) * | 2012-03-16 | 2012-07-18 | 邱思婕 | Locking and transmission device of rotor components of vertical multi-stage pump |
| WO2015031544A1 (en) * | 2013-08-27 | 2015-03-05 | Schlumberger Canada Limited | Self-compliant bearing system for electric submersible pumps |
| CN105156340A (en) * | 2015-08-20 | 2015-12-16 | 天津市百成油田采油设备制造有限公司 | Inverse water-injection electric submersible pump system |
| CN209654262U (en) * | 2019-02-15 | 2019-11-19 | 河北工程大学 | A kind of polydisc carries carrier |
Non-Patent Citations (1)
| Title |
|---|
| 大型立式泵机组碟簧支撑圆形瓦推力滑动轴承研究;王毅等;中国农村水利水电(第03期);全文 * |
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| CN109654035A (en) | 2019-04-19 |
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