CN102788026B - Anti-leaking sealing method of full-sealing liquid pump of with detachable motor stator during operation - Google Patents
Anti-leaking sealing method of full-sealing liquid pump of with detachable motor stator during operation Download PDFInfo
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- CN102788026B CN102788026B CN201110140688.XA CN201110140688A CN102788026B CN 102788026 B CN102788026 B CN 102788026B CN 201110140688 A CN201110140688 A CN 201110140688A CN 102788026 B CN102788026 B CN 102788026B
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- metal sealing
- isolated shield
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- sealing
- motor
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Abstract
Provided is a sealing method for preventing internal liquid molecule from leaking when a motor stator winding disassemble full-sealing type liquid pump device runs, which is characterized in that a rotor (2) which forms a drag motor and a pump body (9) are surrounded by metal sealing isolating shield (4) by means of three-dimension; the metal sealing isolating shield (4) arranged at a lower part surrounding the rotor (2) applies obconical sealing isolation to other part between the drag motor and the pump body except a motor shaft seal (6) in the structure; part of the metal sealing isolating shield (4) for surrounding the rotor (2) part is made of thin non-magnetic material, all the gaps of the metal sealing isolating shield (4) are achieved through a disassemble welding technology, and the whole machine exterior is provided with a protective coat (5). The sealing method of the invention mostly suits sinking pumps arranged in the water without periodic maintenance for a long time and other land special water pumps (such as precious venom pumps).
Description
Technical field
The present invention relates to liquid pump technology, especially relate to when the detachable full seal type pump mechanism of a kind of motor stator winding is run and can prevent the encapsulating method to external leakage internal liquid molecule (such as: water) (containing: structure) technology.
Background technique
At present, size specification various liquid pumps different from model emerge in an endless stream, and the submersible pump of water pump especially wherein and its top level structure form is all the more so, and therefore, liquid pump becomes current purposes quite extensively a kind of power equipment of maturation.
Its deficiency is: when current liquid pump runs mainly its shaft seal place easily to the liquid of its inside of external leakage, and this leakage for form liquid pump as its main body the pump housing for, inessential, and main problem is: if, what liquid pump leaked is precious liquid, will cause damage economically or huge loss; If allow dragging motor in submersible pump be seeped water the dragging motor of intrusive contact to it, the deceleration of motor even motor damage and damaging will be caused.
Such as: the sealing configuration of prior art submersible pump is dismountable, no matter whether its work, when being placed under water over a long time, being be difficult to accomplish definitely to prevent the dragging motor inside that water penetrates into it, causing its dragging motor to slow down and even burn and damage.
Again such as: in many industrial occasions, the ammonia pump adopted in the large-scale refrigerating system that high-rise freezer uses, the wherein leakage of ammonia is exactly inevitably, and this will improve the operating cost of freezer significantly; If, what adopt in the middle of refrigeration system is efficient and the refrigeration agent of high standard, so, from the inner refrigeration agent such to external leakage of liquid pump, just not allow for, namely due to like this, in the large-scale refrigerating system that high-rise freezer uses, be difficult to adopt the efficiently refrigeration agent of high standard (costliness).
Summary of the invention
The object of the present invention:
Be exactly in order to by improving the one of the sealing configuration of prior art, the leakage problem that the water molecule solved in liquid pump from overall structure is external.
In order to realize the object of the invention, intend adopting following technology:
The present invention includes: conventional structure form by rotor and the pump housing embedding dragging motor that the stator of winding forms and driven by its rotating shaft, and be positioned at outermost protective coat;
It is characterized in that:
Above-mentioned rotor and above-mentioned both pump housings cingens with stereogenic by metal sealing Isolated Shield, and, part for the metal sealing Isolated Shield between this rotor and this stator adopts slim non-magnet material to serve as, and, the part of the metal sealing Isolated Shield that this slim non-magnet material makes is arranged on the inner ring circumferential location of being close to the stator embedding winding, moreover, the seal isolation that implement inverted cone physique structure of metal sealing Isolated Shield structurally simultaneously to dragging motor and the pump housing in the metal sealing Isolated Shield upper part inner chamber therebetween except electric machine shaft gland is sentenced,
The seal isolation of described inverted cone physique structure is specifically performed by the hydrops of taper body wherein;
All gaps that described metal sealing Isolated Shield relates to itself are all by non-removable and can not have the welding procedure of rosin joint character to realize.
---described metal sealing Isolated Shield is by including the upper part Isolated Shield chamber of rotor and being made up of both the lower part Isolated Shield chambeies including the pump housing, and is realized by the way of the last assembled enforcement integral solder assembly of both part.
The present invention's feature compared with the prior art:
Due to above-mentioned rotor of the present invention and above-mentioned both pump housings cingens with stereogenic by metal sealing Isolated Shield, and all gaps that this metal sealing Isolated Shield relates to itself are all realized by non-removable welding procedure, this just creates condition for: structural type of the present invention can stop the fluid molecule in liquid pump to leak into the external world.
Accompanying drawing explanation
Figure illustrates a kind of constructive embodiment of the present invention being provided with metal sealing Isolated Shield.
1: the motor stator embedding winding; 2: rotor; 3: motor bearings; 4: metal sealing Isolated Shield; 5: protective coat; 6: machine shaft; 7: electric machine shaft gland or the position of this shaft seal is set; 8: liquid-discharging tube interface; 9: the pump housing (such as: belong to conventional blade type); 10: liquid inlet pipe interface.
Embodiment
Key of the present invention is, between motor stator 1 and rotor 2, be provided with by slim (desirable 0.1 millimeter of its thickness) that (have drawn from non-magnet material stainless steel or brass, etc.) the metal sealing Isolated Shield 4 made, and other positions of metal sealing Isolated Shield 4 can adopt abundant material to produce (its thickness is the magnitude of 2 to 4 millimeters), and the gap formed between metal sealing Isolated Shield 4 different parts must adopt welding procedure to realize (comprise liquid inlet pipe interface 10 and be Type of Welding with both liquid-discharging tube interfaces 8 with the connection of metal sealing Isolated Shield 4), and should forbid to occur the phenomenon of rosin joint or dry joint, the final molding of this Isolated Shield 4 entirety can adopt and allow after the Isolated Shield 4 of top dragging motor part and each self-forming of Isolated Shield 4 of the bottom pump housing 9 part, carry out the assembled of both part again and the way implementing the last assembly of integral solder realizes.---object is: the metal sealing Isolated Shield 4 after allowing by welding assembly defines upper part cavity (including rotor 2 structure) and lower part cavity (including the entire infrastructure of the pump housing 9), and being somebody's turn to do unique passage that can penetrate (leakage) liquid or gas molecule between the two cavity is exactly electric machine shaft gland 7 place; If the liquid in the pump housing 9, for entering upper part cavity by electric machine shaft gland 7 place, will be subject to the backwater effect of this upper part inside cavity existing air (air) and be difficult to enter.
Because (motor intensification) when the present invention works and gas (air) temperature in this Isolated Shield 4 upper part cavity when not working are different, the principle according to expanding with heat and contract with cold:
When motor quits work, namely when metal sealing Isolated Shield 4 cavity temperature is relatively low, the pump housing 9 inside upwards infilters in the chamber of metal sealing Isolated Shield 4 upper part by having a small amount of liquid (water) from electric machine shaft gland 7, due to the infiltration of liquid (water), also can improve gas (air) in this upper part chamber to the jacking dynamics of this infiltration simultaneously, make the jacking dynamics of this water percolating capacity and this gas (air) reach balance; Finally, above-mentioned a small amount of infiltrated into liquid (water) is allowed to be deposited on the bottom position of the inverted cone body in metal sealing Isolated Shield 4 upper part chamber; The deposition quantity of this minute quantity infiltrated into liquid (water) is probably little.
When machine operation, namely when metal sealing Isolated Shield 4 cavity temperature is relatively high, this upper part intracavity gas (air) will increase for the jacking dynamics infiltering next liquid (water) downward, forces the liquid of above-mentioned infiltration (water) to exit this Isolated Shield 4 of this upper part from electric machine shaft gland 7 Chu Youyuan road.
In addition, if the present invention is arranged under water whether (no matter its work) always, then the change of the underwater environment temperature in summer and winter also can affect the quantity on average normally stockpiling liquid (water) of the bottom position of inverted cone body in metal sealing Isolated Shield 4 upper part inner chamber.---" hydrops " of this inverted cone body, this will play important upper and lower between " fluid-tight " buffer action.
Obviously, the key that the present invention can set up is: allow metal sealing Isolated Shield 4 finally be spliced into overall structure form by welding, and, also do not allow the piece position that there is rosin joint or dry joint.---allow the upper part cavity of metal sealing Isolated Shield 4 except position, electric machine shaft gland 7 place form gas (air) storage entities of " hermetically sealed " type, reach the degree allowing air molecule or water molecule definitely therefrom cannot penetrate (leakage).
If, certain position of metal sealing Isolated Shield 4 adopts the sealing material of dismountable nonmetal rubber one class and sealed by fastening enforcement of screw, so, the air on this Isolated Shield 4 cavity top still can penetrate away from above-mentioned flexible non-metallic sealing material, and just its transmission rate may slowly (it is not all right that bicycle and air tube a period of time do not inflate---itself cannot stop penetrating of gas molecule).
If, certain position of metal sealing Isolated Shield 4 adopts the metal flat of dismountable two unusual light to be sealed by fastening enforcement of screw, so, air in this Isolated Shield 4 cavity still can from (all there is roughness in any plane smooth again---its smooth gap of pressing cannot stop penetrating of gas molecule) of passing between the metal flat of above-mentioned two unusual light, just its transmission rate may slowly some.
Above two example sufficient proof why prior art submersible pump also exist problem that " be difficult to accomplish " described in " background technique " arrange for a long time under water.---this is because: the dismountable sealing configuration adopted at its key position in prior art cannot resist the cause that gas molecule or fluid molecule penetrate from its sealing defence line.
As everyone knows, what the dragging motor of the pump housing 9 was abstained from most is exactly allow rotor 2 touch water and in water rotary work.Because the stickiness of water is very large, will the rotating speed of limiting motor rotor 2 and the output of moment to a great extent.---the spin down of rotor 2 can increase considerably the electric current embedding and pass through in stator 1 winding, finally burns out or damages the winding embedded in motor stator 1, cause motor corrupted.
Thin as far as possible and non-magnetic metal sealing Isolated Shield 4 is allowed to implement drive fit with the inner circumference of motor stator 1 in the present invention, and allow when there is gap between rotor 2 and this Isolated Shield 4, allow rotor 2 rotary work in gas (air) all the time by the effect of rotating magnetic field.---because the external world to be subject to the jacking of the air in the present invention in " hermetically sealed " type metal sealing Isolated Shield 4 inner chamber for the water entering inside of the present invention, under any circumstance, have no chance to enter in a large number in the middle of this Isolated Shield 4 inner chamber and allow rotor 2 touch water, and allow the infiltration being deposited on this Isolated Shield 4 intracavity bottom of minute quantity, be the not normal rotary work of entail dangers to rotor 2.
And independent motor stator 1 prevents the structure of soaking from easily accomplishing, belong to prior art scope, such as, the simplest way is: dry after being soaked in insulated paint by the stator 1 embedding winding again and just can achieve.Obviously, this motor stator 1 that embedded in winding belongs to dismountable character (it is not surrounded by metal sealing Isolated Shield 4) in a structure of the in-vention, by contrast, winding coil in dismountable motor stator 1 is easy to damage in a structure of the in-vention, structure so, the maintenance for motor stator 1 is favourable.
Explanation about the sealing configuration that middle pump body 9 of the present invention relates to:
Metal sealing Isolated Shield 4 described in the present invention surrounds above-mentioned rotor 2 and the above-mentioned pump housing 9 (five-star structural type) with stereogenic.
But, as long as under the end face being maintained the pump housing 9 belongs to the prerequisite of metal sealing Isolated Shield 4 structural type (minimum rate of accumulation of structure), allow remaining bottom surface and face, five, front, rear, left and right in the present invention to leak (prerequisite allows to leak on using), then can give in the manufacture of complete machine of the present invention and cause some convenient.---such structural type being inferior to the technology of the present invention, for making the submersible pump that can be arranged at over a long time under water, its overall performance still can considerably beyond the requirement of prior art.
In general, motor is a very ripe product, as long as the rotor 2 guaranteeing wherein is rotary work in atmosphere all the time, so, motor is just not easy to damage very much.Therefore, the rotor 2 in the present invention is arranged in metal sealing Isolated Shield 4 does not also just worry easily having occurred from the problem of damaging after running over a long time.---generally by the long-life machine of motor drag, such as: household electric refrigerator or family expenses sky wither the full seal type compressor adopted in device, it is exactly the durable apparatus of full seal type be made up of both compressed pneumatic pump and dragging motor thereof, wherein be somebody's turn to do the common working life of the disposable adapted of the two durable components mostly more than 10 years, and the common working life of the disposable adapted of World Famous Brand product is mostly more than 15 years or 20 years.
Claims (2)
1. the encapsulating method of Leakage prevention internal liquid molecule when the detachable full seal type pump mechanism of motor stator winding is run, comprise: the pump housing (9) driven by its rotating shaft (6) with the two dragging motor formed of stator (1) embedding winding by rotor (2) of conventional structure form, and be positioned at outermost protective coat (5);
It is characterized in that:
The two is cingens with stereogenic by metal sealing Isolated Shield (4) for above-mentioned rotor (2) and the above-mentioned pump housing (9), and, adopt slim non-magnet material to serve as the part of this rotor (2) with this stator (1) metal sealing Isolated Shield (4) therebetween, and, the part of the metal sealing Isolated Shield (4) that this slim non-magnet material makes is arranged on the inner ring circumferential location of being close to the stator (1) embedding winding, and, the bottom position of metal sealing Isolated Shield (4) structurally simultaneously to dragging motor and the pump housing (9) in metal sealing Isolated Shield (4) the upper part inner chamber therebetween except electric machine shaft gland (7) is sentenced implements the seal isolation of inverted cone physique structure,
The seal isolation of described inverted cone physique structure is specifically performed by the hydrops of taper body wherein;
All gaps that described metal sealing Isolated Shield (4) relates to itself are all by non-removable and can not have the welding procedure of rosin joint character to realize.
2. an encapsulating method according to claim 1, it is characterized in that: described metal sealing Isolated Shield (4) is made up of with both the lower part Isolated Shield chambeies including the pump housing (9) the upper part Isolated Shield chamber including rotor (2), and be realized by the way of the last assembled enforcement integral solder assembly of both part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110140688.XA CN102788026B (en) | 2011-05-16 | 2011-05-16 | Anti-leaking sealing method of full-sealing liquid pump of with detachable motor stator during operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110140688.XA CN102788026B (en) | 2011-05-16 | 2011-05-16 | Anti-leaking sealing method of full-sealing liquid pump of with detachable motor stator during operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102788026A CN102788026A (en) | 2012-11-21 |
| CN102788026B true CN102788026B (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110140688.XA Expired - Fee Related CN102788026B (en) | 2011-05-16 | 2011-05-16 | Anti-leaking sealing method of full-sealing liquid pump of with detachable motor stator during operation |
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| CN (1) | CN102788026B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015117562A1 (en) * | 2014-10-16 | 2016-04-21 | Johnson Electric S.A. | gear pump |
| CN108953169A (en) * | 2016-12-22 | 2018-12-07 | 李峰 | A kind of immersible pump for exploiting combustible ice for depressurizing method |
| CN109340137A (en) * | 2016-12-22 | 2019-02-15 | 李峰 | For depressurizing the immersible pump of method exploitation combustible ice |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1372248A2 (en) * | 2002-06-13 | 2003-12-17 | Wilo Ag | Assembling method of air-gap sleeve motor |
| EP1967288A2 (en) * | 2007-03-08 | 2008-09-10 | General Electric Company | Rotor and stator assemblies that utilize magnetic bearings for use in corrosive environments |
| CN101315080A (en) * | 2008-05-13 | 2008-12-03 | 梁嘉麟 | Full sealing type refrigerant fluid pump and its application in high-rise storied house refrigerating system |
| CN101821512A (en) * | 2007-10-09 | 2010-09-01 | 阿克海底公司 | Protection system for subsea seawater injection pumps |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10152497A1 (en) * | 2001-10-24 | 2003-05-15 | Pierburg Gmbh | Wet rotor |
| JP2005299617A (en) * | 2004-04-16 | 2005-10-27 | Mitsuba Corp | Motor pump |
-
2011
- 2011-05-16 CN CN201110140688.XA patent/CN102788026B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1372248A2 (en) * | 2002-06-13 | 2003-12-17 | Wilo Ag | Assembling method of air-gap sleeve motor |
| EP1967288A2 (en) * | 2007-03-08 | 2008-09-10 | General Electric Company | Rotor and stator assemblies that utilize magnetic bearings for use in corrosive environments |
| CN101821512A (en) * | 2007-10-09 | 2010-09-01 | 阿克海底公司 | Protection system for subsea seawater injection pumps |
| CN101315080A (en) * | 2008-05-13 | 2008-12-03 | 梁嘉麟 | Full sealing type refrigerant fluid pump and its application in high-rise storied house refrigerating system |
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| CN102788026A (en) | 2012-11-21 |
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Address after: 317523 Zhejiang city of Wenling Province town industrial zone Zeguo Danya Applicant after: Liang Jialin Address before: Hangzhou City, Zhejiang province 310018 Xiasha College of mechanical and electrical engineering China Jiliang University Applicant before: Liang Jialin |
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Free format text: CORRECT: ADDRESS; FROM: 310018 HANGZHOU, ZHEJIANG PROVINCE TO: 317523 TAIZHOU, ZHEJIANG PROVINCE |
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Granted publication date: 20150708 Termination date: 20160516 |