CN113982911B - Redundancy electric pump and engine - Google Patents
Redundancy electric pump and engine Download PDFInfo
- Publication number
- CN113982911B CN113982911B CN202111307483.6A CN202111307483A CN113982911B CN 113982911 B CN113982911 B CN 113982911B CN 202111307483 A CN202111307483 A CN 202111307483A CN 113982911 B CN113982911 B CN 113982911B
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- China
- Prior art keywords
- motor
- gear pump
- pump
- housing
- gear
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- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/008—Enclosed motor pump units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/041—Arrangements for driving gear-type pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to a redundancy electric pump and an engine, wherein the redundancy electric pump comprises a first motor, a second motor, a gear pump and a sealing device, wherein the first motor and the second motor are symmetrically arranged at two sides of the gear pump, the output end of the first motor and the output end of the second motor are respectively in transmission connection with a driving gear of the gear pump, and the sealing device is respectively arranged between the first motor and the gear pump and between the second motor and the gear pump; the electric pump can be driven to normally operate by controlling the first motor or the second motor to operate, and when the first motor or the second motor fails, the other motor is used for driving the electric pump to operate, so that the design of the redundancy of the electric pump is realized, and the purposes of reducing the occurrence probability of the failure and improving the reliability are achieved.
Description
Technical Field
The invention relates to the technical field of engine power transmission, in particular to a redundant electric pump and an engine.
Background
The electric pump is used as a core component of the engine, plays a role of a heart in the running process of the engine, has particularly critical performance, and gradually replaces the traditional oil pump along with the high-quality rapid development of aerospace industry in China, so that the electric pump becomes an emerging engine power source core product. Therefore, demands are increasingly stringent for redundancy, efficiency, compactness, miniaturization, modularization, and weight reduction of the electric pump, which requires the electric pump to have higher reliability and the ability to accommodate future lightweight engines.
However, the existing electric pump adopts a redundancy-free design, and the design structure can increase the probability of failure of the engine, so that the reliability is poor.
Disclosure of Invention
A first object of the present invention is to provide a redundancy electric pump, which has a redundancy structure design, reduces the probability of failure occurrence, and improves reliability.
A second object of the present invention is to provide an engine based on the above-described redundancy electric pump.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a redundancy electric pump, includes first motor, second motor, gear pump and sealing device, first motor with the second motor set up symmetrically in the both sides of gear pump, the output of first motor with the output of second motor respectively with the driving gear transmission of gear pump is connected, first motor with between the gear pump and the second motor with be provided with respectively between the gear pump sealing device.
Preferably, the motor driving device further comprises a third motor and a fourth motor, wherein the third motor and the fourth motor are symmetrically arranged on two sides of the gear pump, the output end of the third motor and the output end of the fourth motor are respectively connected with driven gears of the gear pump in a transmission manner, and sealing devices are respectively arranged between the third motor and the gear pump and between the fourth motor and the gear pump.
Preferably, a driving gear of the gear pump and a driving shaft of the gear pump are of an integrated structure, and two ends of the driving shaft of the gear pump respectively penetrate through the two sealing devices to be connected with an output shaft of the first motor and an output shaft of the second motor into a whole; the driven shaft of the gear pump is integrally connected with the output shaft of the third motor and the output shaft of the fourth motor through two sealing devices respectively.
Preferably, the first motor and the third motor are assembled in a first motor housing, and the third motor and the fourth motor are assembled in a second motor housing.
Preferably, the first motor, the second motor, the third motor and the fourth motor are all permanent magnet synchronous motors, each permanent magnet synchronous motor comprises a motor armature, rolling bearings, a permanent magnet and an output shaft, the permanent magnets are sleeved on the output shafts, the motor armatures are rotatably arranged on the output shafts through the two rolling bearings at two ends of the permanent magnets, and the motor armatures encircle the outside of the permanent magnets.
Preferably, the sealing device between the first motor and the gear pump and the sealing device between the third motor and the gear pump share a first sealing shell, a sealing element of the sealing device between the first motor and the gear pump is sleeved at a connection part of an output shaft of the first motor and a driving shaft of the gear pump, and a sealing element of the sealing device between the third motor and the gear pump is sleeved at a connection part of an output shaft of the third motor and a driven shaft of the gear pump;
the sealing device between the second motor and the gear pump and the sealing device between the fourth motor and the gear pump share a second sealing shell, sealing elements of the sealing device between the second motor and the gear pump are sleeved at the joint of an output shaft of the second motor and a driving shaft of the gear pump, and sealing elements of the sealing device between the fourth motor and the gear pump are sleeved at the joint of an output shaft of the fourth motor and a driven shaft of the gear pump.
Preferably, the fastener penetrates through the first motor housing, the first seal housing, the pump housing of the gear pump, the second seal housing and the second motor housing in sequence to connect the first motor housing, the first seal housing, the pump housing of the gear pump, the second seal housing and the second motor housing.
Preferably, the motor armature of the first motor, the motor armature of the second motor, the motor armature of the third motor and the motor armature of the fourth motor are respectively connected with the controller.
An engine comprising the electric redundancy pump according to any one of the above.
As can be seen from the above technical scheme, the invention discloses an excessive electric pump, which comprises a first motor, a second motor, a gear pump and a sealing device, wherein the first motor and the second motor are symmetrically arranged at two sides of the gear pump, the output end of the first motor and the output end of the second motor are respectively in transmission connection with a driving gear of the gear pump, and the sealing device is respectively arranged between the first motor and the gear pump and between the second motor and the gear pump; the electric pump can be driven to normally operate by controlling the first motor or the second motor to operate, and when the first motor or the second motor fails, the other motor is used for driving the electric pump to operate, so that the design of the redundancy of the electric pump is realized, and the purposes of reducing the occurrence probability of the failure and improving the reliability are achieved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an external structure of a redundancy electric pump according to an embodiment of the present invention;
FIG. 2 is a side view of a redundant electric pump provided by an embodiment of the present invention;
FIG. 3 is an internal cross-sectional view of a redundant electric pump provided by an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a gear pump of the redundant electric pump provided by an embodiment of the present invention;
fig. 5 is a control schematic diagram of the redundancy electric pump according to the embodiment of the present invention.
In fig. 1-5:
1 is a first motor housing; 2 is a first sealed housing; 3 is a pump shell; 4 is a second sealed housing; 5 is a second motor housing; 6 is a fastener; 7 is a first motor; 8 is a second motor; 9 is a driving gear; 10 is a third motor; 11 is a fourth motor; 12 is a driven gear; 13 is a rolling bearing; 14 is the motor armature; 15 is a permanent magnet; 16 is an output shaft; 17 is a sealing element; 18 is a controller.
Detailed Description
One of the cores of the invention is to provide a redundancy electric pump, which adopts a redundancy structure design, so that the purposes of reducing the occurrence probability of faults and improving the reliability can be achieved.
Another core of the present invention is to provide an engine based on the above-described redundancy electric pump.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 4, fig. 1 is a schematic diagram of an external structure of a redundancy electric pump according to an embodiment of the present invention, fig. 2 is a side view of the redundancy electric pump according to the embodiment of the present invention, fig. 3 is an internal cross-sectional view of the redundancy electric pump according to the embodiment of the present invention, and fig. 4 is a cross-sectional view of a gear pump of the redundancy electric pump according to the embodiment of the present invention.
The embodiment of the invention discloses a redundancy electric pump, which comprises a first motor 7, a second motor 8, a gear pump and a sealing device, wherein the first motor 7 and the second motor 8 are symmetrically arranged on two sides of the gear pump, the output end of the first motor 7 and the output end of the second motor 8 are respectively in transmission connection with a driving gear 9 of the gear pump, and the sealing device is respectively arranged between the first motor 7 and the gear pump and between the second motor 8 and the gear pump.
It can be seen that, compared with the prior art, the redundancy electric pump disclosed in the above embodiment can drive the electric pump to operate normally by controlling the first motor 7 or the second motor 8 to operate, and when the first motor 7 or the second motor 8 fails, the other motor is used to drive the electric pump to operate instead, thereby realizing redundancy design of the electric pump, and achieving the purposes of reducing the failure occurrence probability and improving the reliability.
Preferably, the redundant electric pump further includes a third motor 10 and a fourth motor 11, the third motor 10 and the fourth motor 11 are symmetrically disposed at two sides of the gear pump, an output end of the third motor 10 and an output end of the fourth motor 11 are respectively connected with a driven gear 12 of the gear pump in a transmission manner, sealing devices are respectively disposed between the third motor 10 and the gear pump and between the fourth motor 11 and the gear pump, and by disposing the third motor 10 and the fourth motor 11, when the first motor 7 and the second motor 8 are failed, the third motor 10 or the fourth motor 11 can be operated to change a driven shaft of the gear pump into a driving shaft, thereby further increasing redundancy of the electric pump.
Preferably, the driving gear 9 of the gear pump and the driving shaft of the gear pump are of an integrated structure, and two ends of the driving shaft of the gear pump respectively penetrate through two sealing devices to be connected with the output shaft 16 of the first motor 7 and the output shaft 16 of the second motor 8 into a whole; the driven shaft of the gear pump and the driven shaft of the gear pump are of an integrated structure, two ends of the driven shaft of the gear pump respectively penetrate through two sealing devices to be connected with the output shaft 16 of the third motor 10 and the output shaft 16 of the fourth motor 11 into a whole, and the design structure combines the motor output shaft 16 and the gear pump into a whole, so that intermediate connecting pieces such as a coupler are omitted in form, the efficiency of the whole pump is improved to a certain extent, the volume and the weight of the electric pump are reduced, and the miniaturization and the light weight of the electric pump are facilitated.
Further, in the embodiment of the present invention, the first motor 7 and the third motor 10 are assembled in the first motor housing 1, and the third motor 10 and the fourth motor 11 are assembled in the second motor housing 5.
Specifically, in the embodiment of the present invention, the first motor 7, the second motor 8, the third motor 10 and the fourth motor 11 are all permanent magnet synchronous motors, the permanent magnet synchronous motors include a motor armature 14, rolling bearings 13, permanent magnets 15 and an output shaft 16, the permanent magnets 15 are sleeved on the output shaft 16, the motor armature 14 is rotatably arranged on the output shaft 16 through two rolling bearings 13 positioned at two ends of the permanent magnets 15, and the motor armature 14 is surrounded outside the permanent magnets 15.
Further optimizing the technical scheme, the sealing device between the first motor 7 and the gear pump and the sealing device between the third motor 10 and the gear pump share the first sealing shell 2, the sealing element 17 of the sealing device between the first motor 7 and the gear pump is sleeved at the joint of the output shaft 16 of the first motor 7 and the driving shaft of the gear pump, and the sealing element 17 of the sealing device between the third motor 10 and the gear pump is sleeved at the joint of the output shaft 16 of the third motor 10 and the driven shaft of the gear pump;
the sealing device between the second motor 8 and the gear pump and the sealing device between the fourth motor 11 and the gear pump share the second sealing shell 4, a sealing element 17 of the sealing device between the second motor 8 and the gear pump is sleeved at the joint of an output shaft 16 of the second motor 8 and a driving shaft of the gear pump, and a sealing element 17 of the sealing device between the fourth motor 11 and the gear pump is sleeved at the joint of an output shaft 16 of the fourth motor 11 and a driven shaft of the gear pump.
The redundant electric pump provided by the embodiment of the invention has a 5-section modularized structure through the structural design, so that on one hand, the processing difficulty can be reduced, and the precision of parts can be improved; on the other hand, the modular installation can be realized, and the future standardization can be realized.
Further, the fastener 6 sequentially penetrates the first motor housing 1, the first sealed housing 2, the pump housing 3 of the gear pump, the second sealed housing 4 and the second motor housing 5 to connect the first motor housing 1, the first sealed housing 2, the pump housing 3 of the gear pump, the second sealed housing 4 and the second motor housing 5, the fastener 6 may include a plurality of connecting screws, and each connecting screw is uniformly distributed around the circumference of the redundant electric pump.
Referring to fig. 5, the redundant electric pump further includes a controller 18, and the motor armatures 14, 14 of the first, second, third and fourth motors 7, 8, 10 and 11 are respectively connected to the controller 18.
An engine comprising the redundancy electric pump according to the above embodiment, and the technical effects of the engine are as described in the above embodiment, because the engine comprises the redundancy electric pump according to the above embodiment.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a redundancy electric pump, its characterized in that includes first motor, second motor, third motor, fourth motor, gear pump and sealing device, first motor with the second motor set up symmetrically in the both sides of gear pump, the output of first motor with the output of second motor respectively with the driving gear transmission of gear pump is connected, first motor with between the gear pump and the second motor with be provided with respectively between the gear pump sealing device, third motor with fourth motor set up symmetrically in the both sides of gear pump, the output of third motor with the output of fourth motor respectively with the driven gear transmission of gear pump is connected, third motor with between the gear pump and be provided with respectively between the fourth motor with sealing device.
2. The redundancy electric pump according to claim 1, wherein a driving gear of the gear pump and a driving shaft of the gear pump are of an integral structure, and two ends of the driving shaft of the gear pump respectively penetrate through the two sealing devices to be connected with an output shaft of the first motor and an output shaft of the second motor into a whole; the driven shaft of the gear pump is integrally connected with the output shaft of the third motor and the output shaft of the fourth motor through two sealing devices respectively.
3. The excess motor pump of claim 1 or 2, wherein the first motor and the third motor are mounted within a first motor housing and the third motor and the fourth motor are mounted within a second motor housing.
4. The redundancy electric pump of claim 3, wherein the first motor, the second motor, the third motor, and the fourth motor are all permanent magnet synchronous motors, the permanent magnet synchronous motors comprise motor armatures, rolling bearings, permanent magnets, and an output shaft, the permanent magnets are sleeved on the output shaft, the motor armatures are rotatably arranged on the output shaft through two rolling bearings positioned at two ends of the permanent magnets, and the motor armatures are surrounded outside the permanent magnets.
5. The excess electric pump of claim 3 wherein the sealing means between the first motor and the gear pump and the sealing means between the third motor and the gear pump share a first seal housing, a sealing element of the sealing means between the first motor and the gear pump being nested at a junction of an output shaft of the first motor and a drive shaft of the gear pump, a sealing element of the sealing means between the third motor and the gear pump being nested at a junction of an output shaft of the third motor and a driven shaft of the gear pump;
the sealing device between the second motor and the gear pump and the sealing device between the fourth motor and the gear pump share a second sealing shell, sealing elements of the sealing device between the second motor and the gear pump are sleeved at the joint of an output shaft of the second motor and a driving shaft of the gear pump, and sealing elements of the sealing device between the fourth motor and the gear pump are sleeved at the joint of an output shaft of the fourth motor and a driven shaft of the gear pump.
6. The electric redundancy pump of claim 5, wherein fasteners sequentially penetrate the first motor housing, the first sealed housing, the pump housing of the gear pump, the second sealed housing, and the second motor housing to connect the first motor housing, the first sealed housing, the pump housing of the gear pump, the second sealed housing, and the second motor housing.
7. The excess electric pump of any of claims 1-2 and 4-6, further comprising a controller, wherein the motor armature of the first motor, the motor armature of the second motor, the motor armature of the third motor, and the motor armature of the fourth motor are each coupled to the controller.
8. An engine comprising the electric redundancy pump according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111307483.6A CN113982911B (en) | 2021-11-05 | 2021-11-05 | Redundancy electric pump and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111307483.6A CN113982911B (en) | 2021-11-05 | 2021-11-05 | Redundancy electric pump and engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113982911A CN113982911A (en) | 2022-01-28 |
| CN113982911B true CN113982911B (en) | 2023-08-25 |
Family
ID=79746840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111307483.6A Active CN113982911B (en) | 2021-11-05 | 2021-11-05 | Redundancy electric pump and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113982911B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09140107A (en) * | 1995-11-16 | 1997-05-27 | Matsushita Electric Ind Co Ltd | Motor |
| JPH09154250A (en) * | 1995-11-28 | 1997-06-10 | Matsushita Electric Ind Co Ltd | Vibration generating motor |
| JPH09154269A (en) * | 1995-11-28 | 1997-06-10 | Matsushita Electric Ind Co Ltd | Brushless motor |
| CN101005227A (en) * | 2007-01-16 | 2007-07-25 | 北京航空航天大学 | Coaxial two section four margin brushless DC torque motor |
| CN101030717A (en) * | 2007-01-16 | 2007-09-05 | 北京航空航天大学 | DC brushless torque motor of coaxial triple-segment and redundancy |
| CN101237206A (en) * | 2007-12-29 | 2008-08-06 | 浙江工业大学 | Multi-motor coordination control system |
| CN102868266A (en) * | 2012-09-17 | 2013-01-09 | 北京航空航天大学 | High-reliability permanent-magnet synchronous motor based on redundancy and fault-tolerant technology |
| CN106224234A (en) * | 2016-09-12 | 2016-12-14 | 西安航天动力研究所 | A kind of microminiature double elements electric gear wheel pump |
-
2021
- 2021-11-05 CN CN202111307483.6A patent/CN113982911B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09140107A (en) * | 1995-11-16 | 1997-05-27 | Matsushita Electric Ind Co Ltd | Motor |
| JPH09154250A (en) * | 1995-11-28 | 1997-06-10 | Matsushita Electric Ind Co Ltd | Vibration generating motor |
| JPH09154269A (en) * | 1995-11-28 | 1997-06-10 | Matsushita Electric Ind Co Ltd | Brushless motor |
| CN101005227A (en) * | 2007-01-16 | 2007-07-25 | 北京航空航天大学 | Coaxial two section four margin brushless DC torque motor |
| CN101030717A (en) * | 2007-01-16 | 2007-09-05 | 北京航空航天大学 | DC brushless torque motor of coaxial triple-segment and redundancy |
| CN101237206A (en) * | 2007-12-29 | 2008-08-06 | 浙江工业大学 | Multi-motor coordination control system |
| CN102868266A (en) * | 2012-09-17 | 2013-01-09 | 北京航空航天大学 | High-reliability permanent-magnet synchronous motor based on redundancy and fault-tolerant technology |
| CN106224234A (en) * | 2016-09-12 | 2016-12-14 | 西安航天动力研究所 | A kind of microminiature double elements electric gear wheel pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113982911A (en) | 2022-01-28 |
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