CN114962266B - Unidirectional bearing type ice-breaking hydrogen circulating pump - Google Patents
Unidirectional bearing type ice-breaking hydrogen circulating pump Download PDFInfo
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- CN114962266B CN114962266B CN202210494080.5A CN202210494080A CN114962266B CN 114962266 B CN114962266 B CN 114962266B CN 202210494080 A CN202210494080 A CN 202210494080A CN 114962266 B CN114962266 B CN 114962266B
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000001257 hydrogen Substances 0.000 title claims abstract description 37
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 37
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 13
- 238000003754 machining Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 210000000078 claw Anatomy 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000006223 plastic coating Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 229910001008 7075 aluminium alloy Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/18—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
-
- 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
- F04C2230/00—Manufacture
- F04C2230/90—Improving properties of machine parts
-
- 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
- F04C2230/00—Manufacture
- F04C2230/90—Improving properties of machine parts
- F04C2230/91—Coating
-
- 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
- F04C2240/00—Components
- F04C2240/20—Rotors
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- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The unidirectional bearing type ice-breaking hydrogen circulating pump comprises a rotor core arranged on the outer side of a motor spindle, a magnet is arranged on the outer side of the rotor core, rotor flanges are respectively fixedly arranged on two end faces of the rotor core and the magnet, a unidirectional bearing is respectively arranged between each rotor flange and the motor spindle, an inner ring of the unidirectional bearing is fixedly connected with the motor spindle, and an outer ring of the unidirectional bearing is fixedly connected with the rotor flanges; the male rotor and the female rotor respectively comprise a rotor body, the rotor body is made of LCP engineering plastics, the male rotor shaft and the female rotor shaft are made of metal, and the rotor body is directly injection-molded on the male rotor shaft and the female rotor shaft and is connected with the male rotor shaft and the female rotor shaft into a whole. The rotor of the motor and the motor main shaft can rotate relatively to adjust the angle, the rotor can rotate backwards to find the maximum torque point, the no-load rotation angle of the rotor is formed, and when the rotor is started at low temperature, no-load rotation is firstly carried out to form torque inertia impact force to break ice, so that the motor is protected.
Description
Technical field:
the invention relates to a unidirectional bearing type ice-breaking hydrogen circulating pump.
The background technology is as follows:
the fuel cell generates electric energy through electrochemical reaction between combustible substances (hydrogen) and oxygen in air, wherein the discharged gas contains a large amount of hydrogen after the fuel cell reacts, and if the hydrogen is directly discharged into the atmosphere, on the one hand, the hydrogen is wasted, on the other hand, the environment is polluted, and on the other hand, the hydrogen is inflammable and explosive and dangerous. Therefore, these hydrogen gases need to be recovered and reused. At present, the hydrogen-containing mixed gas is generally recycled back to the fuel cell by a hydrogen circulating pump for recycling. At present, when the hydrogen circulating pump works, because the hydrogen-containing mixed gas exhausted by the fuel cell is provided with some water vapor, a certain amount of water can be accumulated in the pressurizing cavity of the hydrogen circulating pump after the hydrogen circulating pump is used for a period of time, if the water is not discharged in time, the water can be condensed into ice after the hydrogen circulating pump is stopped when the temperature is too low in winter, so that the male rotor and the female rotor are frozen, the motor rotor and the motor spindle are installed in an interference fit mode, the motor spindle rotates when the motor is started, the male rotor and the female rotor are frozen and cannot break ice, so that the motor is locked, and even the motor is damaged when the temperature is severe.
At present, the male rotor and the female rotor are generally made of aluminum alloy, the aluminum alloy is fast in cooling and easy to freeze at low temperature, ice breaking of a hydrogen circulating pump is not facilitated, and the aluminum alloy rotor has the following defects:
(1) In the process of pressurizing the hydrogen-containing mixed gas, the aluminum alloy material is directly contacted with the hydrogen-containing mixed gas and is easily corroded by hydrogen and water vapor, so that the gap error is increased, and the working stability and the service life are affected;
(2) The original rotor is finished by rough milling and finish milling of 7075 aluminum alloy, so that the weight is large, the assembly is carried out after the rotor shaft is assembled, deviation is easy to exist in the assembly process, and the repairing frequency is high, so that the rotor has high cost for not only materials but also manufacturing cost;
(3) In the market, a process of spraying an anti-corrosion coating on an aluminum alloy rotor appears, however, in the first aspect, the film thickness formed by one-time spraying is very thin, the film thickness required by the formation needs to be sprayed for multiple times, the process is complex and the cost is high, in addition, the sprayed coating is usually made of Teflon or polytetrafluoroethylene materials, the thermal expansion coefficient of the material is large, and under the condition of high temperature, the coating is separated from the rotor, so that the gap of a pump is reduced, and the risks of abrasion and clamping are generated; in the second aspect, the uneven error of the spraying thickness of the spraying layer is increased on the basis of the processing precision, and the contour precision of the finished product is reduced, so that the meshing precision of the whole machine is reduced, and the consistency of the product performance is affected; in the third aspect, the spray coating layer has the cost and the working hour waste of secondary processing, in addition, the binding force of the plastic coating layer and the base material is poor, the problem that the plastic coating layer is bulged and separated after use is solved, because the mold ejector rod is needed to eject a workpiece during the processing of the plastic coating rotor, 3 holes are formed in the end face of the plastic coating rotor, on one hand, air can enter between the plastic coating layer and the insert through the 3 holes, the binding force is poor more easily, in addition, the aluminum surface of the 3 holes of the insert is exposed and easy to corrode, the processing qualification rate and the performance are influenced, and hydrogen and water vapor can enter a gap between the plastic coating layer and the base material to corrode.
In summary, in the field of hydrogen circulation pumps, the problem of ice breaking has become a technical problem to be solved in the industry.
The invention comprises the following steps:
the invention provides a unidirectional bearing type ice-breaking hydrogen circulating pump for overcoming the defects of the prior art, solves the problem that a motor is damaged by freezing of a male rotor and a female rotor due to low temperature, solves the problem of poor corrosion resistance of the traditional aluminum alloy rotor, solves the problems of heavy weight, high cost and troublesome assembly of the traditional aluminum alloy rotor, and solves the problems of complex process, high cost, easy falling of a coating, abrasion and seizing of the traditional spraying rotor.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the unidirectional bearing type ice-breaking hydrogen circulating pump comprises a motor shell and a booster shell, wherein a stator, a rotor and a motor spindle are arranged in the motor shell, a gear chamber is formed between the booster shell and the motor shell, a driving gear and a driven gear are arranged in the gear chamber, a booster cavity is formed at the other side of the booster shell, a male rotor and a female rotor are arranged in the booster cavity, the driving gear and the male rotor are arranged on a male rotor shaft, and the driven gear and the female rotor are arranged on a female rotor shaft;
the rotor comprises a rotor iron core arranged on the outer side of a motor main shaft, a magnet is arranged on the outer side of the rotor iron core, rotor flanges are respectively and fixedly arranged at two end faces of the rotor iron core and the magnet, a one-way bearing is respectively arranged between each rotor flange and the motor main shaft, an inner ring of the one-way bearing is fixedly connected with the motor main shaft, an outer ring of the one-way bearing is fixedly connected with the rotor flanges, the one-way bearing forms a rotor idle rotation angle, the rotor is firstly idle-load rotated to form a torque inertia impact force and then drives the motor main shaft to rotate through the one-way bearing, the motor main shaft drives a male rotor shaft to rotate, the male rotor shaft drives a driven gear to rotate through a driving gear, and the female rotor shaft and a male rotor and a female rotor on the male rotor shaft synchronously rotate to break ice;
the male rotor and the female rotor respectively comprise a rotor body, the rotor body is made of LCP engineering plastics, the male rotor shaft and the female rotor shaft are made of metal, the rotor body is directly injection-molded on the male rotor shaft and the female rotor shaft and is connected with the male rotor shaft and the female rotor shaft into a whole, and limit keys are arranged among the male rotor shaft, the female rotor shaft and the rotor body and are used for preventing the rotor body from axial displacement and radial displacement.
The inner ring of the unidirectional bearing is connected with the motor spindle in an interference press fit manner.
The middle part of rotor flange inwards buckles and forms the draw-in groove, the outer loop interference pressure equipment of one-way bearing is in the draw-in groove.
The motor main shaft is made of aluminum alloy or stainless steel or 45 steel.
The motor main shaft and the male rotor shaft are integrally manufactured.
The male and female rotors comprise screw or Roots or claw or gear type structures.
The number of blades of the male rotor and the female rotor is 2-6.
The limit key is integrally formed with the male rotor shaft and the female rotor shaft, and comprises a spline.
The processing steps of the rotor body, the male rotor shaft and the female rotor shaft are as follows: firstly, rough machining is carried out on a male rotor shaft and a female rotor shaft, splines are machined on the male rotor shaft and the female rotor shaft, then positions of the corresponding splines of a rotor body are directly injection-molded on the male rotor shaft and the female rotor shaft, after the rotor body is cooled and shaped, finish machining is carried out on the male rotor shaft and the female rotor shaft, and finally finish machining is carried out on the rotor body.
The number of the limit keys is two, and the two limit keys are arranged on the male rotor shaft and the female rotor shaft at intervals.
And lightening holes are formed in the blades of the rotor body.
The invention adopts the scheme and has the following advantages:
through installing the unidirectional bearing respectively between each rotor flange and the motor main shaft, the inner ring of the unidirectional bearing is fixedly connected with the motor main shaft, the outer ring of the unidirectional bearing is fixedly connected with the rotor flange, the rotor of the motor and the motor main shaft can rotate relatively to perform angle adjustment, the rotor can rotate backwards to find the maximum torque point to form the no-load rotation angle of the rotor, the rotor rotates firstly in no-load to form torque inertial impact force to break ice when started at low temperature, the phenomenon of motor stalling is avoided, the motor is protected, the two unidirectional bearings can also play a certain bearing role, the rotor is protected, the rotor is prevented from being damaged, and the service life of the rotor is ensured;
the rotor body is made of LCP engineering plastics, the rotor body is directly injection-molded on the male rotor shaft and the female rotor shaft and is connected with the male rotor shaft and the female rotor shaft into a whole, the LCP engineering plastics are low in temperature reduction and not easy to freeze at low temperature, the LCP engineering plastics are high in fluidity, the injection temperature and the mold temperature are low, the LCP engineering plastics are more suitable for injection molding, the spline is added on the male rotor shaft and the female rotor shaft, the rotor body is directly injection-molded on the male rotor shaft and the female rotor shaft, and finally the rotor body is subjected to finish machining, so that the position degree of the male rotor shaft, the female rotor shaft and the rotor body is ensured, the product percent of pass is higher, the processing technology is simpler compared with that of the traditional aluminum alloy rotor, and the manufacturing cost is lower; on the other hand, LCP engineering plastics have lower density and lower material cost than aluminum alloy materials, have lower thermal expansion coefficient than aluminum alloy, are more suitable for the operation of a hydrogen circulating pump at low temperature and high temperature, and improve the service life of products.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic cross-sectional view of the motor rotor of the present invention.
Fig. 3 is a schematic perspective view of a male rotor according to the present invention.
Fig. 4 is a schematic cross-sectional view of the male rotor of the present invention.
Fig. 5 is a schematic perspective view of a male rotor shaft according to the present invention.
In the figure, 1, a motor housing, 2, a supercharger housing, 3, a driving gear, 4, a driven gear, 5, a male rotor, 6, a female rotor, 7, a male rotor shaft, 8, a female rotor shaft, 9, a stator, 10, a rotor, 11, a motor main shaft, 12, a rotor core, 13, a magnet, 14, a rotor flange, 15, a one-way bearing, 16, a clamping groove, 17, a rotor body, 18, a limit key, 19 and a lightening hole.
The specific embodiment is as follows:
in order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1-5, a unidirectional bearing type ice-breaking hydrogen circulating pump comprises a motor shell 1 and a booster shell 2, wherein a stator 9, a rotor 10 and a motor main shaft 11 are arranged in the motor shell 1, a gear chamber is formed between the booster shell 2 and the motor shell 1, a driving gear 3 and a driven gear 4 are arranged in the gear chamber, a booster cavity is arranged at the other side of the booster shell 2, a male rotor 5 and a female rotor 6 are arranged in the booster cavity, the driving gear 3 and the male rotor 5 are arranged on a male rotor shaft 7, and the driven gear 4 and the female rotor 6 are arranged on a female rotor shaft 8;
the rotor 10 comprises a rotor core 12 arranged on the outer side of a motor main shaft 11, a magnet 13 is arranged on the outer side of the rotor core 12, rotor flanges 14 are fixedly arranged on two end faces of the rotor core 12 and the magnet 13 respectively, a one-way bearing 15 is arranged between each rotor flange 14 and the motor main shaft 11 respectively, an inner ring of each one-way bearing 15 is fixedly connected with the motor main shaft 11, an outer ring of each one-way bearing 15 is fixedly connected with the rotor flange 14, each one-way bearing 15 forms a rotor idle rotation angle, when the rotor is started at low temperature, idle rotation firstly forms torque inertia impact force and then drives the motor main shaft 11 to rotate through the one-way bearing 15, the motor main shaft 11 drives a male rotor shaft 7 to rotate again, the male rotor shaft 7 drives a driven gear 4 to rotate through a driving gear 3, and the driven gear 4 drives a female rotor shaft 8 to rotate, and a male rotor 5 and a female rotor 6 on the male rotor shaft 7 and the female rotor shaft 8 synchronously rotate to break ice;
the male rotor 5 and the female rotor 6 respectively comprise a rotor body 17, the rotor body 17 is made of LCP engineering plastics, the male rotor shaft 7 and the female rotor shaft 8 are made of metals, the rotor body 17 is directly injection-molded on the male rotor shaft 7 and the female rotor shaft 8 and is connected with the male rotor shaft and the female rotor shaft into a whole, a limit key 19 is arranged among the male rotor shaft, the female rotor shaft and the rotor body, and the limit key 19 is used for preventing the rotor body from axial and radial displacement.
The one-way bearing 15 is a bearing which can freely rotate in one direction and is locked in the other direction, and the metal shell of the one-way bearing 15 comprises a plurality of rolling shafts, rolling pins or rolling balls, and the rolling seat is shaped so that the one-way bearing can only roll in one direction and can generate great resistance in the other direction. The unidirectional bearing 15 is arranged, so that the rotor 10 of the motor and the motor main shaft 11 can relatively rotate to perform angle adjustment, the rotor 10 can rotate backwards to find the maximum torque point, torque inertia impact force is formed to break ice during starting, the phenomenon of motor locked rotor is avoided, and the motor is protected. The two unidirectional bearings 15 can play a certain bearing role between the motor main shaft 11 and the rotor flange 14, protect the rotor 10, prevent the rotor 10 from being damaged, and ensure the service life of the rotor 10.
The inner ring of the one-way bearing 15 is connected with the motor main shaft 11 through interference press fit, so that the inner ring of the one-way bearing 15 is fixedly connected with the motor main shaft 11.
The middle part of the rotor flange 14 is inwards bent to form a clamping groove 16, and the outer ring of the one-way bearing 15 is pressed in the clamping groove 16 in an interference manner, so that the outer ring of the one-way bearing 15 is fixedly connected with the rotor flange 14.
The motor main shaft 11 is made of aluminum alloy or stainless steel or 45 steel.
The motor spindle 11 is integrally formed with the male rotor shaft 7.
The male rotor 5 and the female rotor 6 comprise screw-type or roots-type or claw-type or gear-type structures.
The number of blades of the male rotor 5 and the female rotor 6 is 2-6.
The processing steps of the rotor body 17, the male rotor shaft 7 and the female rotor shaft 8 are as follows: firstly, rough machining is carried out on a male rotor shaft and a female rotor shaft, splines are machined on the male rotor shaft and the female rotor shaft, then positions of the corresponding splines of a rotor body are directly injection-molded on the male rotor shaft and the female rotor shaft, after the rotor body is cooled and shaped, finish machining is carried out on the male rotor shaft and the female rotor shaft, and finally finish machining is carried out on the rotor body, so that the required precision requirement is met.
The limit key 18 is integrally formed with the male rotor shaft 7 and the female rotor shaft 8, the limit key can be directly machined on the male rotor shaft and the female rotor shaft through a machine tool, the limit key 18 comprises a spline, the multi-tooth shape of the spline can enhance the radial binding force between the male rotor shaft, the female rotor shaft and the rotor body, and radial displacement of the rotor body is effectively avoided.
The number of the limit keys 18 is two, and the two limit keys are arranged on the male rotor shaft and the female rotor shaft at intervals, so that the axial limit effect on the rotor body can be enhanced, and the axial displacement of the rotor body is avoided.
The rotor body 17 has weight reducing holes 19 in the blades.
During operation, the rotor 10 drives the motor main shaft 11 to rotate through the one-way bearing 15, the motor main shaft 11 drives the male rotor shaft 7 to rotate, the male rotor shaft 7 drives the male rotor 5 to rotate on one hand, the driving gear 3 drives the driven gear 4 to rotate on the other hand, and the driven gear 4 drives the female rotor 8 on the female rotor shaft 8 to synchronously rotate, so that the supercharging function of the hydrogen circulating pump is realized.
The above embodiments are not to be taken as limiting the scope of the invention, and any alternatives or modifications to the embodiments of the invention will be apparent to those skilled in the art and fall within the scope of the invention.
The present invention is not described in detail in the present application, and is well known to those skilled in the art.
Claims (9)
1. A unidirectional bearing type icebreaking hydrogen circulating pump is characterized in that: the motor comprises a motor shell and a supercharger shell, wherein a stator, a rotor and a motor spindle are arranged in the motor shell, a gear chamber is formed between the supercharger shell and the motor shell, a driving gear and a driven gear are arranged in the gear chamber, a supercharging cavity is formed at the other side of the supercharger shell, a male rotor and a female rotor are arranged in the supercharging cavity, the driving gear and the male rotor are arranged on a male rotor shaft, and the driven gear and the female rotor are arranged on a female rotor shaft;
the rotor comprises a rotor iron core arranged on the outer side of a motor main shaft, a magnet is arranged on the outer side of the rotor iron core, rotor flanges are respectively and fixedly arranged at two end faces of the rotor iron core and the magnet, a one-way bearing is respectively arranged between each rotor flange and the motor main shaft, an inner ring of the one-way bearing is fixedly connected with the motor main shaft, the middle part of each rotor flange is inwards bent to form a clamping groove, an outer ring of the one-way bearing is pressed in the clamping groove in an interference manner, the outer ring of the one-way bearing is fixedly connected with the rotor flange, the one-way bearing forms a no-load rotation angle of the rotor, torque inertia impact force is formed by no-load rotation firstly when the rotor is started at low temperature, then the motor main shaft is driven to rotate through the one-way bearing, the motor main shaft drives a male rotor shaft to rotate, the male rotor shaft drives a driven gear to rotate through a driving gear, and the female rotor shaft and the male rotor and the female rotor on the male rotor shaft and the female rotor shaft synchronously rotate to break ice;
the male rotor and the female rotor respectively comprise a rotor body, the rotor body is made of LCP engineering plastics, the male rotor shaft and the female rotor shaft are made of metal, the rotor body is directly injection-molded on the male rotor shaft and the female rotor shaft and is connected with the male rotor shaft and the female rotor shaft into a whole, and limit keys are arranged among the male rotor shaft, the female rotor shaft and the rotor body and are used for preventing the rotor body from axial displacement and radial displacement.
2. The unidirectional bearing type ice-breaking hydrogen circulating pump of claim 1, wherein: the inner ring of the unidirectional bearing is connected with the motor spindle in an interference press fit manner.
3. The unidirectional bearing type ice-breaking hydrogen circulating pump of claim 1, wherein: the motor main shaft is made of aluminum alloy or stainless steel or 45 steel.
4. The unidirectional bearing type ice-breaking hydrogen circulating pump of claim 1, wherein: the motor main shaft and the male rotor shaft are integrally manufactured.
5. The unidirectional bearing type ice-breaking hydrogen circulating pump of claim 1, wherein: the male rotor and the female rotor comprise screw type or Roots type or claw type or gear type structures, and the number of blades of the male rotor and the female rotor is 2-6.
6. The unidirectional bearing type ice-breaking hydrogen circulating pump of claim 1, wherein: the processing steps of the rotor body, the male rotor shaft and the female rotor shaft are as follows: firstly, rough machining is carried out on a male rotor shaft and a female rotor shaft, splines are machined on the male rotor shaft and the female rotor shaft, then positions of the corresponding splines of a rotor body are directly injection-molded on the male rotor shaft and the female rotor shaft, after the rotor body is cooled and shaped, finish machining is carried out on the male rotor shaft and the female rotor shaft, and finally finish machining is carried out on the rotor body.
7. The unidirectional bearing type ice-breaking hydrogen circulating pump of claim 1, wherein: the limit key is integrally formed with the male rotor shaft and the female rotor shaft, and comprises a spline.
8. The unidirectional bearing type ice-breaking hydrogen circulating pump of claim 1, wherein: the number of the limit keys is two, and the two limit keys are arranged on the male rotor shaft and the female rotor shaft at intervals.
9. The unidirectional bearing type ice-breaking hydrogen circulating pump of claim 1, wherein: and lightening holes are formed in the blades of the rotor body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210494080.5A CN114962266B (en) | 2022-05-08 | 2022-05-08 | Unidirectional bearing type ice-breaking hydrogen circulating pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210494080.5A CN114962266B (en) | 2022-05-08 | 2022-05-08 | Unidirectional bearing type ice-breaking hydrogen circulating pump |
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| CN114962266B true CN114962266B (en) | 2023-07-11 |
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| CN116480579A (en) * | 2023-04-23 | 2023-07-25 | 烟台东德实业有限公司 | Method for hollowing and breaking ice by hydrogen circulating pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2721914Y (en) * | 2004-08-18 | 2005-08-31 | 王于祥 | Corrosion-proof rotor of Roots pump |
| JP4640190B2 (en) * | 2006-01-20 | 2011-03-02 | 株式会社豊田自動織機 | Electric pump for hydrogen circulation |
| CN203175858U (en) * | 2013-04-27 | 2013-09-04 | 宁波爱发科真空技术有限公司 | Roots pump with anti-corrosion layers on pump body and rotor |
| CN106026576B (en) * | 2016-06-29 | 2018-06-22 | 清华大学 | A kind of smooth self-running line-start permanent magnetic synchronous motor of energy |
| CN109763981B (en) * | 2019-02-22 | 2023-11-24 | 威固乐真空设备(浙江)有限公司 | Composite rotor, injection mold for producing rotor and rotor production process |
| CN111173743A (en) * | 2020-02-03 | 2020-05-19 | 烟台东德实业有限公司 | Put formula hydrogen circulating pump in bearing |
| CN214660829U (en) * | 2021-03-24 | 2021-11-09 | 烟台东德实业有限公司 | Icebreaking hydrogen circulating pump |
| CN216241287U (en) * | 2021-11-16 | 2022-04-08 | 重庆凯瑞动力科技有限公司 | Hydrogen circulating pump of fuel cell |
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