JPS5939978B2 - Motor protection device for motor shaft type equipment - Google Patents
Motor protection device for motor shaft type equipmentInfo
- Publication number
- JPS5939978B2 JPS5939978B2 JP54117589A JP11758979A JPS5939978B2 JP S5939978 B2 JPS5939978 B2 JP S5939978B2 JP 54117589 A JP54117589 A JP 54117589A JP 11758979 A JP11758979 A JP 11758979A JP S5939978 B2 JPS5939978 B2 JP S5939978B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- moldle
- small pump
- leakage
- protection device
- 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.)
- Expired
Links
- 239000007788 liquid Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 235000019198 oils Nutrition 0.000 description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- 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)
Description
【発明の詳細な説明】
本発明はモードル軸無用形機器におけるモードル保護を
より完全ならしめるだめの装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for more completely protecting a mold in a machine that does not require a mold shaft.
従来、モードル軸を延長して兼用とした機器として例え
ば水中ポンプ等があった。Conventionally, there has been a submersible pump, for example, as a device with a dual-purpose model shaft extended.
この場合、モードル室に順次連接して軸封装置室・ポン
プ室が設けられ、通常軸封装置室としてはシール面潤滑
および冷却の目的をもってオイル室を設けて上下２段の
メカニカルシールを備え、ポンプ室からオイル室への浸
水とオイル室からモードル室への漏油・漏水を防止する
ごとく構成されている。In this case, a shaft sealing device chamber and a pump chamber are provided sequentially connected to the mold chamber, and the shaft sealing device chamber is usually provided with an oil chamber for the purpose of seal surface lubrication and cooling, and is equipped with two upper and lower mechanical seals. It is constructed to prevent water from entering the oil chamber from the pump chamber and from oil and water leaking from the oil chamber to the mold chamber.
しかし乍ら、メカニカルシールにはシール面がなじみ状
態に至るまでの間は初期洩れと称する洩れがあシ、さら
に正常状態に至っても分子洩れと称する微少洩れが必ら
ず発生し、完全な閉塞状態とはならないものである。However, with mechanical seals, there is a leak called initial leak until the seal surface becomes accustomed to the state, and even when the seal reaches a normal state, a minute leak called molecular leak inevitably occurs, and complete occlusion occurs. It is not a state.
この他、運転時はシール面摩擦発熱等によジオイル室内
油温の上昇があり、したがって膨張による圧力上昇でモ
ードル室側へ洩れ易く、この状態から停止した場合は冷
却による収縮でオイル室内に負圧が生じてポンプ室側か
ら吸水するという様な呼吸作用が生じ、この様な作用の
反覆の間に僅かづ＼ではあっても水分がオイル中に混入
したのち油水混合状でモードル室側へ洩れ、該室内にお
ける水分蒸発による各部発錆等諸種の悪影響を及ぼし、
勿論浸入量が多く々れば直ちにモードル焼損事故にもつ
ながるものである。In addition, during operation, the temperature of the oil in the oil chamber increases due to heat generation from friction on the seal surface, etc. Therefore, the pressure increases due to expansion, which tends to leak into the mold chamber. A breathing action occurs in which pressure is generated and water is sucked from the pump chamber side, and during the repetition of this action, water gets mixed into the oil, even if only slightly, and then flows into the mold chamber side as a mixture of oil and water. Leaks, moisture evaporation in the room causes various negative effects such as rusting in various parts,
Of course, if the amount of infiltration is too large, it will immediately lead to a mold burnout accident.
本発明は、前述のごとき軸封装置としては最適といわれ
るメカニカルシールを用いても避は難い漏洩に起因する
モードル軸無用形機器におけるモードル保護をよシ完全
ならしめ、もってモードル寿命の延長を図ることを目的
として、モードル室と軸封装置部との間に一体回転する
小ポンプを設けて軸封部よりの洩れ液を適宜処理可能と
したことを特徴とする、モードル軸無用形機器における
モードル保護装置に関するものである。The present invention aims to extend the life of the mold by completely protecting the mold in equipment that does not require a mold shaft, which is caused by leakage that is difficult to avoid even when using a mechanical seal, which is said to be the most suitable shaft seal device as described above. For this purpose, a mold in a mold shaft-less equipment is provided, which is characterized in that a small pump that rotates integrally between the mold chamber and the shaft seal device is provided to appropriately dispose of liquid leaking from the shaft seal. It relates to protective devices.
図の実施例につき詳述すれば、１はモードルケーシング
２内において固定子３およびポンプ軸兼用モードル軸４
と一体形成せる回転子５を収容したモードル室、６は前
記モードルケーシング２の下部に連結してモードル室１
を区画するごとくした軸受箱で、モードル軸４との間に
軸受７，８を介在させて該モードル軸を支承している。To explain in detail the embodiment shown in the figure, 1 includes a stator 3 and a modele shaft 4 which also serves as a pump shaft in a modele casing 2.
A mold chamber 6 is connected to the lower part of the mold casing 2 and houses a rotor 5 integrally formed with the mold chamber 1.
It is a bearing box partitioned into sections, and bearings 7 and 8 are interposed between it and the mold shaft 4 to support the mold shaft.
９は前記軸受箱６の下部に連結した軸封装置用オイルケ
ーシングで、軸受箱６との間には小ポンプ用ポンプケー
シング１０を形成するとともに、下部に連結した底板１
１によりオイル室１２を形成している。Reference numeral 9 denotes an oil casing for a shaft sealing device connected to the lower part of the bearing box 6. A pump casing 10 for a small pump is formed between the bearing box 6 and a bottom plate 1 connected to the lower part.
1 forms an oil chamber 12.
１３は小ポンプ用ポンプケーシング１０内に介在させ基
板と軸受箱６の壁面との隙間を微少に保持するごとくモ
ードル軸４に固定した羽根車、１４はモードル軸４とオ
イル室１２との間に介在させた上下２段のシール部をも
つ２段メカニカルシールで、上部シールによジオイル室
１２とポンプケーシング１０間を、また下段シールによ
ジオイル室１２と底板１１下方に形成した水ポンプ室１
５間をそれぞれ遮断するごとくなっている。13 is an impeller interposed in the pump casing 10 for a small pump and fixed to the mold shaft 4 so as to maintain a slight gap between the substrate and the wall surface of the bearing box 6; 14 is an impeller between the mold shaft 4 and the oil chamber 12; The water pump chamber 1 is a two-stage mechanical seal having two intervening upper and lower seal sections, with the upper seal forming a space between the geo-oil chamber 12 and the pump casing 10, and the lower seal forming a space between the geo-oil chamber 12 and the bottom plate 11 below.
It is designed to cut off each of the 5 spaces.
１６はオイルケーシング９に固定した逆止弁で、通孔１
７によシポンプケーシング１０側よりオイル室１２に至
る方向の流れのみ許容するごとく設けである。16 is a check valve fixed to the oil casing 9, and the through hole 1
7 is provided so as to only allow flow in the direction from the pump casing 10 side to the oil chamber 12.
１８は軸受８下面に設けたシール環で、軸受内グリスの
漏出を防止する程度の簡単なものである。A seal ring 18 is provided on the lower surface of the bearing 8, and is simple enough to prevent grease from leaking inside the bearing.
しかして、運転によりオイル室１２内の油または油水混
合物がメカニカルシール１４の上部シールよりポンプケ
ーシング１０に向って漏出した際は、羽根車１３０作用
により軸受８側へ漏出することなく通孔１７、逆止弁１
６を経てオイル室１２内へ循環返送され、したがってモ
ードル室１への油ま・たは油水混合物の浸入は生じない
。Therefore, when the oil or oil/water mixture in the oil chamber 12 leaks from the upper seal of the mechanical seal 14 toward the pump casing 10 during operation, the impeller 130 prevents the oil or oil/water mixture from leaking toward the bearing 8 side. Check valve 1
6 into the oil chamber 12, so that no oil or oil-water mixture can enter the mold chamber 1.
第２図は第２実施例を示すもので、前述第１図に示した
第１実施例におけるポンプケーシング１０よりの排出液
は通孔１１７および逆止弁１１６を経て機外に排出する
ことによシ、モードル室１への漏出を防止するものであ
る。FIG. 2 shows a second embodiment, in which the liquid discharged from the pump casing 10 in the first embodiment shown in FIG. This is to prevent leakage into the mold chamber 1.
第３図は第３実施例を示すもので、前述第２実施例と同
様構成としだ通孔２１７、逆止弁２１６を経た排出液を
導管２１９により陸上の所定位置に導き、腋部において
洩れ量とともに油水混合状態および油のよごれ状態等を
点検し得るごとくしたものである。FIG. 3 shows a third embodiment, which has the same structure as the second embodiment described above, and the drained liquid that has passed through the opening 217 and the check valve 216 is guided to a predetermined position on land through a conduit 219, and leakage occurs in the armpit. It is designed so that it is possible to check not only the amount of oil but also the mixing state of oil and water and the state of oil contamination.
また第４図は第４実施例を示すもので、羽根車３１３は
背面側（モードル側）に裏羽根３１３ａを設けた奥羽根
付としてポンプケーシング１０内の圧力をよシ一層高圧
化可能となし、該ポンプケーシング１０内に圧力検出器
３１９を介在させて、一定圧以上で発信する該検出器３
１９の信号によシ警報を発するか、ポンプ運転を停止せ
しめるか等し得るごとくしたものである。Further, FIG. 4 shows a fourth embodiment, in which the impeller 313 has a back blade 313a provided on the back side (mold side) so that the pressure inside the pump casing 10 can be increased even further. A pressure detector 319 is interposed in the pump casing 10, and the detector 3 emits a signal at a certain pressure or higher.
The signal No. 19 can be used to issue an alarm or stop pump operation.
尚、前述実施例における小ポンプ用羽根車は基板と壁面
との間隙を微少に保持すれば、ある程度の吐出圧に達す
るまではモードル室側への液の漏出は生じないが、液処
理に際し高圧を必要とする際は第４実施例に示したごと
き裏羽根付羽根車の使用によシ目的を達し得るもので、
第１〜第４実施例を通じて裏羽根の採用は適宜選択自由
である。In addition, if the impeller for the small pump in the above-mentioned embodiment maintains a small gap between the substrate and the wall surface, the liquid will not leak to the mold chamber side until a certain discharge pressure is reached. When this is required, the purpose can be achieved by using an impeller with a back blade as shown in the fourth embodiment.
Throughout the first to fourth embodiments, the use of the back blade can be selected as appropriate.
この他、前述実施例では水中ポンプ用として説明したが
勿論これに限られるものではなく、油その他の流体を取
扱う機器および陸上用でも実施効果を奏し得るもので、
また軸封装置としてはメカニカルシールに限定されず、
他の構造のシールであっても同様に効果を奏し得るもの
である。In addition, in the above embodiments, the description has been made for submersible pumps, but the invention is of course not limited to this, and can also be effectively applied to equipment that handles oil and other fluids, and for land use.
In addition, shaft seal devices are not limited to mechanical seals,
Seals with other structures can also produce similar effects.
以上詳述せるごとく本発明装置によるときは、モードル
室と軸封装置部との間に設けた小ポンプによシ軸封装置
部よシモートル室側へ向う洩れ液をもとのオイル室に循
環させたり、外部に排出したり、あるいは小ポンプ室内
における昇圧によシ圧力検知をもって漏洩を検出してポ
ンプ運転を停止せしめる等適宜処理を行なって、モード
ル室側への漏洩を皆無として完全なモードル保護を行な
い得るものである。As described in detail above, when using the device of the present invention, a small pump installed between the mold chamber and the shaft seal device circulates leaked liquid from the shaft seal device toward the remote chamber to the original oil chamber. By taking appropriate measures such as leakage, discharging it to the outside, or increasing the pressure in the small pump chamber and detecting leakage and stopping pump operation, a complete mold is created with no leakage to the mold chamber. It can be protected.
また、小ポンプ室への洩れ液を外部へ排出する場合適宜
配管により陸上部へ導くようにすれば、該陸上部におい
て液状態の点検によりオイル室内油の老化状態や洩れ量
によるシール面摩耗程度を把握することができ、単なる
モードル保護のみに限らず、運転したままでシール交換
時機を予知し得るようにすることも可能である。In addition, when leaking liquid from the small pump chamber to the outside, if it is guided to the land area using appropriate piping, the condition of the liquid can be inspected at the land area to determine the aging state of the oil in the oil chamber and the degree of seal surface wear due to the amount of leakage. In addition to simply protecting the model, it is also possible to predict when it is time to replace the seal while the machine is in operation.
【図面の簡単な説明】
第１図は本発明の第１実施例を示す縦断面図、第２〜４
図は第２〜４実施例を示す要部のみの縦断面図である。
図中、１はモードル室、９は軸封装置用オイルケーシン
グ、１０は小ポンプ用ポンプケーシング、１２はオイル
室、１３は羽根車、１４は２段メカニカルシール、１６
は逆止弁を示す。[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a vertical sectional view showing the first embodiment of the present invention, and FIG.
The figure is a vertical sectional view of only the main parts showing the second to fourth embodiments. In the figure, 1 is a mold chamber, 9 is an oil casing for a shaft sealing device, 10 is a pump casing for a small pump, 12 is an oil chamber, 13 is an impeller, 14 is a two-stage mechanical seal, 16
indicates a check valve.
Claims (1)
軸兼用機器において、モードル室と軸封装置部との間に
一体回転する小ポンプを設けて軸封部よりの洩れ液を処
理可能としたことを特徴とするモードル軸無用形機器に
おけるモードル保護装置。 ２ 前記小ポンプによる洩れ液処理として、軸封部オイ
ル室と小ポンプ吐出側ケーシング内とを逆止弁を介し連
通せしめ、オイル室側へ洩れ液を返送するごとくした特
許請求の範囲第１項記載のモードル軸無用形機器におけ
るモードル保護装置。 ３ 前記小ポンプによる洩れ液処理として、小ポンプ吐
出側ケーシング内と外部間を逆止弁を介し連通せしめ、
外部へ洩れ液を排出するごとくした特許請求の範囲第１
項記載のモードル軸無用形機器におけるモードル保護装
置。 ４ 前記逆止弁より適宜配管をもって所望位置に洩れ液
を移送し得るごとくなし、該位置において洩れ状態確認
を可能とした特許請求の範囲第３項記載のモードル軸無
用形機器におけるモードル保護装置。 ５ 前記小ポンプによる洩れ液処理として、小ポンプケ
ーシング外周部に洩れ液を集合させて加圧状となし、該
圧力部内に圧力検知器を収容して検知信号を発生させる
ごとくした特許請求の範囲第１項記載のモードル軸無用
形機器におけるモードル保護装置。 ６ 前記小ポンプの羽根車は裏羽根材とした特許請求の
範囲第１〜５項記載のうちいずれか１項のモードル軸無
用形機器におけるモードル保護装置。[Scope of Claims] 1. In a molded shaft dual-use device in which a shaft sealing device is interposed between the molding chamber and the shaft sealing device, a small pump that rotates integrally is provided between the molding chamber and the shaft sealing device, and the shaft sealing device A moldle protection device for molded shaft-less equipment, characterized by being capable of handling leaked liquid. 2. In order to treat leakage from the small pump, the oil chamber of the shaft seal part and the inside of the discharge side casing of the small pump are communicated with each other via a check valve, so that the leakage liquid is returned to the oil chamber side, as claimed in claim 1. A molding protection device for the molded shaft-less type equipment described above. 3. To treat leakage from the small pump, the inside of the small pump discharge side casing and the outside are communicated via a check valve,
Claim 1 in which leaked liquid is discharged to the outside
A moldle protection device for the molded shaft-less type equipment described in 2. 4. The moldle protection device for a moldle shaft-less device as set forth in claim 3, wherein the leakage liquid can be transferred from the check valve to a desired position using appropriate piping, and the leakage state can be confirmed at the position. 5. Claims for treating leakage from the small pump include gathering the leakage on the outer periphery of the small pump casing to pressurize it, and housing a pressure detector in the pressure section to generate a detection signal. A moldle protection device for the moldle shaft-less type device according to item 1. 6. A moldle protection device in a moldle shaft-less device according to any one of claims 1 to 5, wherein the impeller of the small pump is made of a back blade material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54117589A JPS5939978B2 (en) | 1979-09-12 | 1979-09-12 | Motor protection device for motor shaft type equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54117589A JPS5939978B2 (en) | 1979-09-12 | 1979-09-12 | Motor protection device for motor shaft type equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5641749A JPS5641749A (en) | 1981-04-18 |
| JPS5939978B2 true JPS5939978B2 (en) | 1984-09-27 |
Family
ID=14715550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54117589A Expired JPS5939978B2 (en) | 1979-09-12 | 1979-09-12 | Motor protection device for motor shaft type equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5939978B2 (en) |
-
1979
- 1979-09-12 JP JP54117589A patent/JPS5939978B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5641749A (en) | 1981-04-18 |
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