CN111463967A - Furnace water pump motor sealing structure - Google Patents
Furnace water pump motor sealing structure Download PDFInfo
- Publication number
- CN111463967A CN111463967A CN201911307774.8A CN201911307774A CN111463967A CN 111463967 A CN111463967 A CN 111463967A CN 201911307774 A CN201911307774 A CN 201911307774A CN 111463967 A CN111463967 A CN 111463967A
- Authority
- CN
- China
- Prior art keywords
- shielding sleeve
- rotor
- stator
- motor
- pump
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 230000007797 corrosion Effects 0.000 claims abstract description 8
- 238000005260 corrosion Methods 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 231100000614 poison Toxicity 0.000 abstract description 2
- 230000007096 poisonous effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
- H02K11/028—Suppressors associated with the rotor
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A sealing structure of a furnace water pump motor. The rotor of the motor and the impeller of the pump are fixed together by the same shaft, the rotor is shielded by the shielding sleeve, the stator of the motor surrounds the shielding sleeve, the end part of the shielding sleeve realizes static sealing by a flange or a welded structure, the inner surface of the stator and the outer surface of the rotor are provided with the stator shielding sleeve and the rotor shielding sleeve which are made of corrosion-resistant metal sheets, and the respective end surfaces are welded with the stator shielding sleeve and the rotor shielding sleeve by the corrosion-resistant metal sheets and are separated from the conveyed liquid. The motor and the pump are integrated, and static seals are adopted completely, so that the electric pump has no leakage completely; can transport poisonous and harmful liquid substances; the pump operates in low noise and silence by adopting the shielding type water-cooling motor and canceling the cooling fan, and is suitable for occasions with high requirements on environmental noise.
Description
Technical Field
The invention relates to the technical field of furnace water pumps, in particular to a sealing structure of a furnace water pump motor.
Background
The boiler water circulating pump is a large-flow, low-lift single-stage centrifugal pump which is arranged in a boiler evaporation system and bears high temperature and high pressure to make working media perform forced flow, and structurally comprises a pump shell, pump blades, a bearing and a heat insulator. Boiler water circulation pumps are commonly used in start-up systems for forced circulation drum boilers and once-through boilers. A pump housing and an impeller. The pump casing is a hemispherical structure, and is characterized by that its wall thickness is small, its correspondent thermal stress is small, and the pump blade is a high-specific revolution centrifugal type, close to mixed flow type single-stage centrifugal pump, and the outlet of pump blade is equipped with pump blade to make partial kinetic energy be converted into pressure energy.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a furnace water pump motor sealing structure, wherein a motor and a pump are integrated, and all static seals are adopted, so that the electric pump has no leakage completely.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a furnace water pump motor sealing structure, which adopts the following scheme:
the rotor of the motor and the impeller of the pump are fixed together by the same shaft, the rotor is shielded by the shielding sleeve, the stator of the motor surrounds the shielding sleeve, the end part of the shielding sleeve realizes static sealing by a flange or a welded structure, the inner surface of the stator and the outer surface of the rotor are provided with the stator shielding sleeve and the rotor shielding sleeve which are made of corrosion-resistant metal sheets, and the respective end surfaces are welded with the stator shielding sleeve and the rotor shielding sleeve by the corrosion-resistant metal sheets and are separated from the conveyed liquid.
The motor and the pump are integrated, and static seals are adopted completely, so that the electric pump has no leakage completely; can transport poisonous and harmful liquid substances; the pump operates in low noise and silence by adopting the shielding type water-cooling motor and canceling the cooling fan, and is suitable for occasions with high requirements on environmental noise.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
According to the embodiment of the invention, a sealing structure of a furnace water pump motor is provided, and the scheme is as follows:
the rotor of the motor and the impeller of the pump are fixed together by the same shaft, then the group of rotors are shielded by the shielding sleeve, the stator of the motor surrounds the shielding sleeve, the shielding sleeve is made of metal, power can be transmitted to the rotors through a magnetic force field, the whole rotors run in pumped liquid, the end part of the shielding realizes static sealing by a flange or a welded structure, and the shielding sleeve is actually a pressure container.
Besides the shielding sleeve, a part is a circulating pipe, and the pumped liquid plays an important role in lubricating and cooling the bearing and sometimes cooling the motor.
The inner surface of the stator and the outer surface of the rotor are provided with a stator shield and a rotor shield made of corrosion-resistant metal sheets, and the respective end surfaces are welded with the stator shield and the rotor shield by the corrosion-resistant metal sheets and separated from the transported liquid, so that the stator winding core and the rotor core are not corroded.
The circulating pipe is generally used to introduce a small amount of liquid to be conveyed (about 1-3% of total flow) from the pump discharge port, and after filtering, the liquid passes through the circulating pipe, firstly lubricates and cools the bearing, then passes through the gap between the stator shielding sleeve and the rotor shielding sleeve to cool, then lubricates and cools the front bearing, and finally returns to the impeller inlet eye through the impeller balance hole.
The shield sleeve of the shield pump, namely the stator shield sleeve and the rotor shield sleeve, is used for preventing a conveying medium from immersing into a stator winding and a rotor iron core, but because of the existence of the shield sleeve, a gap between a motor stator and a rotor is enlarged, eddy current is generated in the shield sleeve, the performance of the motor is reduced, and the power loss is increased.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (1)
1. The utility model provides a stove water pump motor seal structure which characterized in that: the rotor of the motor and the impeller of the pump are fixed together by the same shaft, the rotor is shielded by the shielding sleeve, the stator of the motor surrounds the shielding sleeve, the end part of the shielding sleeve realizes static sealing by a flange or a welded structure, the inner surface of the stator and the outer surface of the rotor are provided with the stator shielding sleeve and the rotor shielding sleeve which are made of corrosion-resistant metal sheets, and the respective end surfaces are welded with the stator shielding sleeve and the rotor shielding sleeve by the corrosion-resistant metal sheets and are separated from the conveyed liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911307774.8A CN111463967A (en) | 2019-12-18 | 2019-12-18 | Furnace water pump motor sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911307774.8A CN111463967A (en) | 2019-12-18 | 2019-12-18 | Furnace water pump motor sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111463967A true CN111463967A (en) | 2020-07-28 |
Family
ID=71679930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911307774.8A Pending CN111463967A (en) | 2019-12-18 | 2019-12-18 | Furnace water pump motor sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111463967A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482122A (en) * | 2009-02-05 | 2009-07-15 | 上海成峰泵业制造有限公司 | Vertical shield pump |
| CN205638962U (en) * | 2016-03-30 | 2016-10-12 | 上海东方泵业(集团)有限公司 | Transport is difficult for gasification medium shielding volute pump structure |
| CN205638963U (en) * | 2016-03-30 | 2016-10-12 | 上海东方泵业(集团)有限公司 | From inhaling type canned motor pump |
-
2019
- 2019-12-18 CN CN201911307774.8A patent/CN111463967A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482122A (en) * | 2009-02-05 | 2009-07-15 | 上海成峰泵业制造有限公司 | Vertical shield pump |
| CN205638962U (en) * | 2016-03-30 | 2016-10-12 | 上海东方泵业(集团)有限公司 | Transport is difficult for gasification medium shielding volute pump structure |
| CN205638963U (en) * | 2016-03-30 | 2016-10-12 | 上海东方泵业(集团)有限公司 | From inhaling type canned motor pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200728 |
|
| WD01 | Invention patent application deemed withdrawn after publication |