CN106992625A - A kind of method of immersible pump and control motor for submerged pump external and internal pressure - Google Patents
A kind of method of immersible pump and control motor for submerged pump external and internal pressure Download PDFInfo
- Publication number
- CN106992625A CN106992625A CN201710225641.0A CN201710225641A CN106992625A CN 106992625 A CN106992625 A CN 106992625A CN 201710225641 A CN201710225641 A CN 201710225641A CN 106992625 A CN106992625 A CN 106992625A
- Authority
- CN
- China
- Prior art keywords
- motor
- motor cavity
- pressure
- immersible pump
- water pocket
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
-
- 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
- F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of method of immersible pump and control motor for submerged pump external and internal pressure, including motor, the motor has the passage inside and outside the motor cavity for connecting the motor, and the passage is communicated with pressure compensation mechanism, and the pressure compensation mechanism includes cylinder, water pocket or air bag.It is poor that the present invention can eliminate motor cavity external and internal pressure, prevents seal seepage, improves the safety in utilization and service life of immersible pump.
Description
Technical field
The present invention relates to immersible pump, and in particular to a kind of method of immersible pump and control motor for submerged pump external and internal pressure.
Background technology
Generally at ambient pressure, i.e., 1 normal atmosphere depresses production to motor for submerged pump, needs to use in production installation process
Seal installs motor, and the air pressure inside motor cavity after sealing is also maintained at atmospheric pressure state, and immersible pump is often in deep water
Worked under state.In the presence of hydraulic pressure, the inside and outside of motor for submerged pump there is pressure differential, and as immersible pump is in water
The pressure being subject to outside the depth increase of lower work, immersible pump is also increased as so that the inside and outside pressure differential of motor
Seepage easily occurs for increase, the hermetic unit of motor, and liquid is easily accessible motor internal and damages motor.Therefore, in order to avoid existing
There is shortcoming present in technology, it is necessary to improvement is made to prior art.
The content of the invention
It is an object of the invention to overcome shortcoming and deficiency of the prior art there is provided a kind of to improve the latent of service life
Water pump.
It is another object of the present invention to provide a kind of method for controlling motor for submerged pump external and internal pressure.
The present invention is realized by following technical scheme：
A kind of immersible pump, including motor, the motor have the passage inside and outside the motor cavity for connecting the motor, described logical
Road is communicated with pressure compensation mechanism, and the pressure compensation mechanism includes cylinder, water pocket or air bag.
Further, the air bag is installed on outside the motor cavity.
Further, the water pocket is installed in the motor cavity.
Further, the flexible cyst wall of the water pocket.
Further, the cylinder include cylinder barrel and the up and down piston run in the cylinder barrel, the cylinder barrel it is upper
Lower two ends offer through hole.
Further, in addition to the piston rod with the gas piston linkage.
A kind of method for controlling motor for submerged pump external and internal pressure, comprises the following steps,
Step (1)：Make the motor cavity and ft connection of motor, connection end makes motor cavity by being communicated with pressure compensation mechanism
Inside and outside pressure it is consistent；
Step (2)：The gas in motor cavity, which is compressed, by supply establishment makes the inside and outside pressure of motor cavity consistent.
Further, the pressure compensation mechanism in the step (1) includes cylinder, water pocket or air bag.
Further, the air bag is outside the motor cavity, gassy in the air bag, and the water pocket is located at the electricity
In machine cavity, the flexible cyst wall of water pocket.
Relative to prior art, the present invention improves the pressure in motor cavity by pressure compensation mechanism, balances immersible pump
Motor cavity external and internal pressure, prevent motor seal part seepage, improve the safety in utilization and service life of immersible pump.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the first embodiment structural representation of immersible pump of the present invention；
Fig. 2 is the second embodiment structural representation of immersible pump of the present invention；
Fig. 3 is the 3rd embodiment structural representation of immersible pump of the present invention；
Fig. 4 is the fourth embodiment structural representation of immersible pump of the present invention.
In figure：1- motor cavities；2- passages；3- cylinders；4- water pockets；5- air bags.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
A kind of immersible pump of the invention, including motor as shown in Figures 1 to 4, the motor has the motor cavity 1 of connection motor
Inside and outside passage 2, passage 2 is communicated with pressure compensation mechanism, and the pressure compensation mechanism includes cylinder 3, water pocket 4 or air bag 5.The pressure
Force compensating mechanism adjusts the pressure in motor cavity 1 according to the external pressure of motor cavity 1, and the external and internal pressure for reducing motor cavity 1 is poor, improves latent
The water resistance of water pump, so as to improve service life.
Embodiment 1：
First structure immersible pump as shown in Figure 1, cylinder 3 is mountable in motor cavity 1.Cylinder 3 is including cylinder barrel and up and down
The piston that activity is run in cylinder barrel, the upper and lower ends of cylinder barrel offer through hole.When the pressure in motor cavity 1 is less than motor cavity 1
During outer pressure, the hydraulic pressure outside motor cavity 1, which acts on cylinder 3, makes piston be compressed the gas in motor cavity 1, makes motor cavity
1 external and internal pressure is consistent；When the pressure in motor cavity 1 is more than the pressure outside motor cavity 1, the gas pressure in motor cavity 1 is in gas
Cylinder 3 makes piston discharge the gas in motor cavity 1, makes the external and internal pressure of motor cavity 1 consistent.
Embodiment 2：
Second structure immersible pump as shown in Figure 2, cylinder 3 is mountable to outside motor cavity 1.
Embodiment 3：
3rd structure immersible pump as shown in Figure 3, water pocket 4 is installed in motor cavity 1.The flexible cyst wall of water pocket 4.Work as electricity
When pressure in machine cavity 1 is less than the pressure outside motor cavity 1, water, which enters in water pocket 4, increases the volume of water pocket 4, realizes to motor
Gas in chamber 1 is compressed, and makes the external and internal pressure of motor cavity 1 consistent；When the pressure in motor cavity 1 is more than the pressure outside motor cavity 1
During power, the gas pressure in motor cavity 1 is in water pocket 4, and water, which exits water pocket 4, reduces the volume of water pocket 4, realizes in motor cavity 1
Gas discharged, make the external and internal pressure of motor cavity 1 consistent.
Embodiment 4：
4th structure immersible pump as shown in Figure 4, air bag 5 is installed on outside motor cavity 1.When the pressure in motor cavity 1 is less than
During pressure outside motor cavity 1, the pressure of water acts on the gas in air bag 5, air bag 5 into motor cavity 1, realizes to motor cavity
Gas in 1 is compressed, and makes the external and internal pressure of motor cavity 1 consistent；When the pressure in motor cavity 1 is more than the pressure outside motor cavity 1
When, the gas in motor cavity 1 enters in air bag 5, and realization discharges to the gas in motor cavity 1, makes the external and internal pressure of motor cavity 1
Unanimously.
Certainly, in motor cavity also can liquid filling body oil, then piston can be compressed to the liquid oil in motor cavity 1,
It can increase the volume of water pocket 4, realization is compressed to the liquid oil in motor cavity 1, the gas in air bag 5 is entered electricity
In machine cavity 1, realization is compressed to the liquid oil in motor cavity 1.
A kind of method for controlling motor for submerged pump external and internal pressure, comprises the following steps,
Step (1)：Make the motor cavity 1 and ft connection of motor, connection end makes motor by being communicated with pressure compensation mechanism
The inside and outside pressure of chamber 1 is consistent；
Step (2)：The gas in motor cavity 1, which is compressed, by supply establishment makes the inside and outside pressure of motor cavity 1 consistent.
Wherein, the pressure compensation mechanism in step (1) includes cylinder 3, water pocket 4 or air bag 5.Air bag 5 is located at motor cavity 1
Outside, gassy in air bag 5, water pocket 4 is in motor cavity 1, the flexible cyst wall of water pocket 4.
Similarly, other cavitys of immersible pump can also balance the external and internal pressure of cavity using this method, such as terminal box or have axle
Hold cavity of connection etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (8)
1. a kind of immersible pump, including motor, it is characterised in that：The motor has logical inside and outside the motor cavity for connecting the motor
Road, the passage is communicated with pressure compensation mechanism, and the pressure compensation mechanism includes cylinder, water pocket or air bag.
2. immersible pump according to claim 1, it is characterised in that：The air bag is installed on outside the motor cavity.
3. immersible pump according to claim 1, it is characterised in that：The water pocket is installed in the motor cavity.
4. immersible pump according to claim 3, it is characterised in that：The flexible cyst wall of water pocket.
5. immersible pump according to claim 1, it is characterised in that：The cylinder includes cylinder barrel and up and down runs on institute
The piston in cylinder barrel is stated, the upper and lower ends of the cylinder barrel offer through hole.
6. a kind of method for controlling motor for submerged pump external and internal pressure, it is characterised in that：Comprise the following steps,
Step (1)：Make the motor cavity and ft connection of motor, connection end makes in motor cavity by being communicated with pressure compensation mechanism
External pressure strongly consistent；
Step (2)：Gas, which is pressed into motor cavity, by supply establishment makes the inside and outside pressure of motor cavity consistent.
7. the method for control motor for submerged pump external and internal pressure according to claim 6, it is characterised in that：The step (1)
In pressure compensation mechanism include cylinder, water pocket or air bag.
8. the method for control motor for submerged pump external and internal pressure according to claim 7, it is characterised in that：The air bag is located at
Outside the motor cavity, gassy in the air bag, the water pocket is in the motor cavity, the flexible capsule of water pocket
Wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225641.0A CN106992625A (en) | 2017-04-07 | 2017-04-07 | A kind of method of immersible pump and control motor for submerged pump external and internal pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225641.0A CN106992625A (en) | 2017-04-07 | 2017-04-07 | A kind of method of immersible pump and control motor for submerged pump external and internal pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106992625A true CN106992625A (en) | 2017-07-28 |
Family
ID=59416139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710225641.0A Pending CN106992625A (en) | 2017-04-07 | 2017-04-07 | A kind of method of immersible pump and control motor for submerged pump external and internal pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106992625A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020228313A1 (en) * | 2019-05-16 | 2020-11-19 | 赛格威科技有限公司 | Motor assembly for all-terrain vehicle and all-terrain vehicle having same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2306346Y (en) * | 1997-03-21 | 1999-02-03 | 蔡庆国 | Inflatable water-proof submersible pump for electric machine |
| US20130216409A1 (en) * | 2012-02-22 | 2013-08-22 | Higra Industrial Ltda | Amphibious pump |
| CN104235049A (en) * | 2014-09-15 | 2014-12-24 | 邢宇 | Elastic variable volume-type pressure-adjustable pressurizer for ensuring water not to enter submerged pump motor |
| CN204103644U (en) * | 2014-11-06 | 2015-01-14 | 天津市普友机电设备制造有限公司 | Deep-water motor shaft seal pressure equaliser |
| CN105386982A (en) * | 2015-11-16 | 2016-03-09 | 上海齐耀动力技术有限公司 | Shielded electric pump with pressure synchronizing device and use method |
-
2017
- 2017-04-07 CN CN201710225641.0A patent/CN106992625A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2306346Y (en) * | 1997-03-21 | 1999-02-03 | 蔡庆国 | Inflatable water-proof submersible pump for electric machine |
| US20130216409A1 (en) * | 2012-02-22 | 2013-08-22 | Higra Industrial Ltda | Amphibious pump |
| CN104235049A (en) * | 2014-09-15 | 2014-12-24 | 邢宇 | Elastic variable volume-type pressure-adjustable pressurizer for ensuring water not to enter submerged pump motor |
| CN204103644U (en) * | 2014-11-06 | 2015-01-14 | 天津市普友机电设备制造有限公司 | Deep-water motor shaft seal pressure equaliser |
| CN105386982A (en) * | 2015-11-16 | 2016-03-09 | 上海齐耀动力技术有限公司 | Shielded electric pump with pressure synchronizing device and use method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020228313A1 (en) * | 2019-05-16 | 2020-11-19 | 赛格威科技有限公司 | Motor assembly for all-terrain vehicle and all-terrain vehicle having same |
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| PB01 | Publication | ||
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Application publication date: 20170728 |