JPS58122395A - Non-leakage pump - Google Patents
Non-leakage pumpInfo
- Publication number
- JPS58122395A JPS58122395A JP451782A JP451782A JPS58122395A JP S58122395 A JPS58122395 A JP S58122395A JP 451782 A JP451782 A JP 451782A JP 451782 A JP451782 A JP 451782A JP S58122395 A JPS58122395 A JP S58122395A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- pressure
- pump
- working fluid
- motor
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
- F04D29/108—Shaft sealings especially adapted for liquid pumps the sealing fluid being other than the working liquid or being the working liquid treated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
近年すべての分野で、漏れの無いポンプの要請が高かま
っている。従来この種のポンプとしては、電動機のロー
タ部分を、ステンレスの薄板のキャンで、電動機のステ
ータ部分から、気密に分離したキャンドポンプが使用さ
れている。この型めポンプの欠点としては、電動機ロー
タがポンプの作動流体中で回転するため、作動流体中の
固形物、腐蝕性液体などが、電動機ロータに作用するこ
とである。また軸受は潤滑油なしに、このような液体の
中で回転することが必要である。このため軸受にはセラ
ミックなどの特殊な材料を使用する。しかし短期間で軸
受が摩耗して、ガタの発生するトラブルがある。また、
ふつうキャンは、オーステナイト、ステンレス調のよう
な、非磁性ではあるが、電導性材料で構成するので、磁
力線のロスがあり、電動機の効率が低下する。DETAILED DESCRIPTION OF THE INVENTION In recent years, there has been an increasing demand for leak-free pumps in all fields. Conventionally, as this type of pump, a canned pump has been used in which the rotor portion of the electric motor is airtightly separated from the stator portion of the electric motor by a can made of a thin stainless steel plate. A disadvantage of this type of pump is that since the motor rotor rotates in the working fluid of the pump, solids, corrosive liquids, etc. in the working fluid can act on the motor rotor. It is also necessary for bearings to rotate in such liquids without lubricating oil. For this reason, special materials such as ceramics are used for bearings. However, the bearings wear out in a short period of time, causing problems such as play. Also,
Normally, the can is made of a non-magnetic but conductive material such as austenite or stainless steel, so there is a loss of magnetic lines of force, which reduces the efficiency of the motor.
本発明は、これらの8題を解決するものであって、電動
機の内部に′、電気絶縁性と潤滑性のある油を封入し、
この油の圧力を、ポンプの作動流体の圧力と平衡せしめ
て、貫通軸のシール部(61!性流体シールなどを使用
)における差圧を無くして、漏れを防止し、普通の軸受
の使用も司能とした、無漏えいポンプを得ようとするも
のである。The present invention solves these eight problems by sealing oil with electrical insulation and lubricating properties inside the electric motor.
The pressure of this oil is balanced with the pressure of the working fluid of the pump, eliminating the differential pressure at the seal part of the penetrating shaft (using a 61! type fluid seal, etc.), preventing leakage, and allowing the use of ordinary bearings. This is an attempt to obtain a highly efficient and leak-free pump.
これを図面によって説明すると、第1図において、これ
は本発明の縦断面図であるが、1はポンプ本体、2はイ
ンペラー、3はボン禮
ブ駆動軸である。4はS動機本体であって、ポンプ作動
流体の圧力に平衡する、討入油圧に耐える圧力容器とな
っている。5は電動機(ふつう交流誘導電動機)の固定
子鉄心、6は固定子巻線である。7は回転子である。To explain this with reference to the drawings, in FIG. 1, which is a longitudinal cross-sectional view of the present invention, 1 is a pump body, 2 is an impeller, and 3 is a pump drive shaft. Reference numeral 4 denotes the S-motor main body, which is a pressure vessel that is balanced with the pressure of the pump working fluid and that can withstand the injection hydraulic pressure. 5 is a stator core of an electric motor (usually an AC induction motor), and 6 is a stator winding. 7 is a rotor.
この回転子7は、潤滑性のある油の中で回転するので、
通常の軸受でよく、問題がない。This rotor 7 rotates in lubricating oil, so
Ordinary bearings will suffice and there will be no problem.
また絶縁性のある油であるため、固定子巻線6に対して
も悪影響がなく、冷却も空冷より良好である。8.9は
軸受であって、密封用の油によってH?Iされるので、
通常の軸受が使用され、キャンドポンプのようなVj殊
なものを必要とせず、したがってトラブルもない。10
は固定子巻線6の取り出し端子であって、油圧に対して
気密に、導線を貫通する部分である。11は圧力平衡器
であって、油圧とポンプの作動流体圧を平衡せしめるつ
12は圧力平衡ベローズであって、場合によっては、ピ
ストン、ダイヤフラムなとでもよい。Furthermore, since the oil has insulating properties, it has no adverse effect on the stator windings 6, and cooling is better than air cooling. 8.9 is a bearing, and H? due to sealing oil. Because I will be
Ordinary bearings are used, no special Vj such as a canned pump is required, and therefore there are no troubles. 10
is a terminal for taking out the stator winding 6, and is a portion that penetrates the conductor in an airtight manner against hydraulic pressure. Reference numeral 11 is a pressure balancer which balances the hydraulic pressure and the working fluid pressure of the pump. Reference numeral 12 is a pressure balance bellows, which may be a piston or a diaphragm depending on the case.
13は管台であって、軸封部の油圧を導くものである。Reference numeral 13 is a nozzle holder that guides the hydraulic pressure of the shaft seal.
14はポンプの作動流体圧の配管である。15は作動流
体と密封用の油を分離するシールである。これは、高温
高圧のときは磁性流体シール、低温低圧のときは通常の
オイルシールなどを使用する。16はポンプの作動流体
が高温のときに、軸部を冷却する冷却水通路である。Reference numeral 14 indicates piping for the working fluid pressure of the pump. 15 is a seal that separates the working fluid and sealing oil. This uses a magnetic fluid seal for high temperature and high pressure, and a regular oil seal for low temperature and low pressure. Reference numeral 16 denotes a cooling water passage that cools the shaft portion when the working fluid of the pump is at a high temperature.
第1図は本発明の縦断面図を示す。 FIG. 1 shows a longitudinal cross-sectional view of the invention.
Claims (1)
けて、貫通軸部の差圧を無くして、漏れを防1h シた
無漏えいポンプA leak-free pump that prevents leaks for 1 hour by immersing the inside of the motor in oil with the same pressure as the pump working fluid to eliminate differential pressure at the penetrating shaft.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP451782A JPS58122395A (en) | 1982-01-13 | 1982-01-13 | Non-leakage pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP451782A JPS58122395A (en) | 1982-01-13 | 1982-01-13 | Non-leakage pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58122395A true JPS58122395A (en) | 1983-07-21 |
Family
ID=11586239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP451782A Pending JPS58122395A (en) | 1982-01-13 | 1982-01-13 | Non-leakage pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58122395A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018137814A1 (en) * | 2017-01-27 | 2018-08-02 | Mtu Friedrichshafen Gmbh | Device for supplying a seal with a lubricant |
CN109162937A (en) * | 2018-08-21 | 2019-01-08 | 田园 | A kind of household fan swivel head |
-
1982
- 1982-01-13 JP JP451782A patent/JPS58122395A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018137814A1 (en) * | 2017-01-27 | 2018-08-02 | Mtu Friedrichshafen Gmbh | Device for supplying a seal with a lubricant |
CN109162937A (en) * | 2018-08-21 | 2019-01-08 | 田园 | A kind of household fan swivel head |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3138105A (en) | Motor driven pumps | |
US2782721A (en) | Motor driven pumps | |
US3220349A (en) | Motor driven pump | |
EP2134969B1 (en) | Fluid pump system | |
US3192861A (en) | High temperature canned motor pump | |
US20140363319A1 (en) | Rotary vane vacuum pump | |
CN214998262U (en) | High-temperature shielding molten salt pump supported by magnetic suspension bearing | |
CN103629118A (en) | Vertical pipeline permanent magnet canned motor pump | |
US1973070A (en) | Pump | |
US2875694A (en) | Motor driven pumps | |
US3767330A (en) | Electric hot water circulating pump with motor having an axial air gap | |
US3291056A (en) | Electric motor pump | |
EP0156096A2 (en) | Shaft seal | |
CA2393243C (en) | A pump | |
US1780338A (en) | Combination motor and pump | |
US2931307A (en) | Enclosed rotor construction for motor pump unit | |
US20200408212A1 (en) | Vacuum Pumping System Comprising A Vacuum Pump And Its Motor | |
US1881344A (en) | Motor compressor | |
JPS58122395A (en) | Non-leakage pump | |
US3132595A (en) | Axial flow pump | |
ATE49630T1 (en) | MOTOR PUMP UNIT WITH NO EXTERNAL OIL LEAKAGE. | |
US1433037A (en) | Motor | |
US2976808A (en) | Rotary thrust pump | |
CN216343036U (en) | Magnetic suspension hydrogen circulating pump | |
JP2022536225A (en) | Unlubricated centrifugal compressor |