JP3129061B2 - Oil level switch test equipment for oil tank equipment - Google Patents
Oil level switch test equipment for oil tank equipmentInfo
- Publication number
- JP3129061B2 JP3129061B2 JP05273920A JP27392093A JP3129061B2 JP 3129061 B2 JP3129061 B2 JP 3129061B2 JP 05273920 A JP05273920 A JP 05273920A JP 27392093 A JP27392093 A JP 27392093A JP 3129061 B2 JP3129061 B2 JP 3129061B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- pipe
- tank
- level switch
- oil tank
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、機器に油ポンプにより
潤滑油や操作油として供給する油を貯留する油タンクに
取付けられた油面計に設けられる油タンクの油面レベル
を検出する油面レベルスイッチの作動を確認する油タン
ク装置の油面レベルスイッチの試験装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil level detector for detecting an oil level of an oil tank provided in an oil level gauge attached to an oil tank for storing lubricating oil or operation oil supplied to an apparatus by an oil pump. The present invention relates to a test apparatus for an oil level switch of an oil tank device for checking the operation of the level switch.
【０００２】[0002]
【従来の技術】機器に潤滑油や操作油として供給する油
は油タンクに貯留され、油ポンプにより油タンク内の油
を機器に供給し、その排油は油タンクに戻るようにして
いる。ここで油タンク内の油面は、油の円滑な供給を保
つため、油タンクに設けられた油面計により監視される
とともに、油面レベルの高，低を油面計に設けられた油
面高レベルスイッチ，油面低レベルスイッチで検出して
いる。2. Description of the Related Art Oil supplied as lubricating oil or operation oil to equipment is stored in an oil tank, oil in the oil tank is supplied to the equipment by an oil pump, and the drain oil is returned to the oil tank. Here, the oil level in the oil tank is monitored by an oil level gauge provided in the oil tank in order to maintain a smooth supply of oil, and the level of the oil level is determined by the oil level gauge provided in the oil level gauge. Detected by surface level switch and oil level switch.
【０００３】ところで、機器の供用中、油タンクの油面
高レベルスイッチ及び油面低レベルスイッチの作動の確
認が行なわれる。この場合には、油タンクの底部に設け
られたドレン弁を開にして油タンクの油を外部に排出
し、徐々に油面を下げて油面低レベルスイッチの作動を
確認したり、油タンク内に油を供給して徐々に油面を上
げて油面高レベルスイッチの作動を確認している。[0003] During the operation of the equipment, the operation of the oil level high level switch and the oil level low level switch of the oil tank is checked. In this case, open the drain valve provided at the bottom of the oil tank to drain the oil from the oil tank to the outside, and gradually lower the oil level to check the operation of the oil level low level switch, The oil is supplied inside, and the oil level is gradually raised to confirm the operation of the oil level high level switch.
【０００４】しかし、上記の油面レベルスイッチの確認
方法では油タンク内の油面レベルを変動させるので、油
タンクから油面低レベルスイッチを作動させるために必
要な量の油を排出したり、また油タンクに油面高レベル
スイッチを作動させるために必要な量を供給したりする
必要があるので、その操作は容易でない。このような問
題点を解決するものとして、本出願人は特願平５−１７
４８８８号にて油面検出装置を備えた油タンクを提案し
ている。以下この提案について簡単に説明する。However, in the above-described method of checking the oil level switch, the oil level in the oil tank is fluctuated, so that an amount of oil required to operate the oil level low switch is discharged from the oil tank, Further, since it is necessary to supply the oil tank with an amount necessary to operate the oil level high level switch, the operation is not easy. To solve such a problem, the present applicant has filed a Japanese Patent Application No. 5-17 / 1993.
No. 4888 proposes an oil tank equipped with an oil level detecting device. Hereinafter, this proposal will be briefly described.
【０００５】図４は上記提案による油面レベルスイッチ
の試験装置を備えた油タンク装置の系統図である。図４
において、油タンク１には油面２を形成して油が貯留さ
れ、油タンク１の油面２より上の空間に接する上部には
上部接続口３、油面２より下の油に接する下部には下部
接続口４が設けられている。油面計５は油タンク１の側
壁に沿って立ち、上下端開口が閉鎖された油筒６と、油
筒６の上部と油タンク１の上部接続口３とに接続する上
部管７と、油筒６の下部と油タンク１の下部接続口４と
に接続し、止め弁８を備える下部管９とから構成されて
いる。なお、油筒６には油タンク１の油面低を検出する
油面低レベルスイッチ１１と、油面高を検出する油面高
レベルスイッチ１２とが設けられている。また、油筒６
の底板に接続してドレン弁１３を備えるドレン管１４が
設けられている。FIG. 4 is a system diagram of an oil tank device provided with a test device for an oil level switch according to the above proposal. FIG.
In the oil tank 1, an oil level 2 is formed and oil is stored. The upper part of the oil tank 1 that contacts the space above the oil level 2 has an upper connection port 3, and the lower part that contacts the oil below the oil level 2. Is provided with a lower connection port 4. The oil level gauge 5 stands along the side wall of the oil tank 1, and has an oil cylinder 6 whose upper and lower ends are closed, an upper pipe 7 connected to the upper part of the oil cylinder 6 and the upper connection port 3 of the oil tank 1, The lower pipe 9 is connected to the lower portion of the oil cylinder 6 and the lower connection port 4 of the oil tank 1 and has a stop valve 8. The oil cylinder 6 is provided with a low oil level switch 11 for detecting a low oil level in the oil tank 1 and a high oil level switch 12 for detecting a high oil level. Oil cylinder 6
A drain pipe 14 having a drain valve 13 connected to the bottom plate is provided.
【０００６】給油管１６は油タンク１の下部と図示しな
い機器とに接続し、給油管１６には油ポンプ１５が設け
られ、油ポンプ１５の吐出側の給油管１６から分岐して
油筒６の下部に接続し、テスト弁１７を備える試験用給
油管１８が設けられている。なお、１９は機器からの排
油を油タンク１に戻す排油管である。このような構成に
より、機器に油を供給するときには止め弁８を開、ドレ
ン弁１３及びテスト弁１７を閉にして油ポンプ１５の駆
動により油を機器に供給し、その排油は排油管１９を経
て油タンク１に戻され、油タンク１に油面２が形成され
る。ここで、この油面２は油面計５の油筒６の油面と同
一レベルとなり、油タンク１の油面レベルは油面計５の
油面レベルとなって示される。The oil supply pipe 16 is connected to a lower part of the oil tank 1 and a device (not shown). The oil supply pipe 16 is provided with an oil pump 15. The oil pump 15 is branched from the oil supply pipe 16 on the discharge side of the oil pump 15. , A test oil supply pipe 18 having a test valve 17 is provided. Reference numeral 19 denotes an oil drain pipe for returning oil from the device to the oil tank 1. With such a configuration, when oil is supplied to the device, the stop valve 8 is opened, the drain valve 13 and the test valve 17 are closed, and the oil pump 15 is driven to supply the oil to the device. Is returned to the oil tank 1, and the oil level 2 is formed on the oil tank 1. Here, the oil level 2 is at the same level as the oil level of the oil cylinder 6 of the oil level gauge 5, and the oil level of the oil tank 1 is shown as the oil level of the oil level gauge 5.
【０００７】ここで、油面低レベルスイッチ１１の作動
を確認するときには、止め弁８及びテスト弁１７を閉、
ドレン弁１３を開にすることにより、油筒６内の油は外
部に排出されて油面が低下し、この油面低下により油面
低レベルスイッチ１１を作動させ、その作動を確認す
る。一方、油面高レベルスイッチ１２の作動を確認する
ときには、止め弁８及びドレン弁１３を閉、テスト弁１
７を開にすることにより、油ポンプ１５により昇圧され
た油タンク１内の油が試験用給油管１８を経て油面計５
の油筒６に流入して油筒６内の油面を上昇させ、この油
面上昇により油面高レベルスイッチ１２を作動させ、そ
の作動を確認する。Here, when confirming the operation of the oil level low level switch 11, the stop valve 8 and the test valve 17 are closed,
When the drain valve 13 is opened, the oil in the oil cylinder 6 is discharged to the outside and the oil level is lowered, and the oil level is lowered to activate the oil level low level switch 11 to confirm the operation. On the other hand, when confirming the operation of the oil level high level switch 12, the stop valve 8 and the drain valve 13 are closed, and the test valve 1
7, the oil in the oil tank 1 pressurized by the oil pump 15 passes through the test oil supply pipe 18 and is
Then, the oil level in the oil cylinder 6 rises, and the oil level high level switch 12 is operated by this oil level rise to confirm the operation.
【０００８】[0008]
【発明が解決しようとする課題】本出願人の提案によれ
ば、油面低レベルスイッチ１１の作動の確認の際、油筒
６内の油をドレン管１４を介して外部に排出するため、
ドレン管１４を油タンク１の据付レベルより低いドレン
回収系統に接続する必要があり、システムが複雑になる
という問題がある。According to the proposal of the present applicant, when the operation of the low oil level switch 11 is confirmed, the oil in the oil cylinder 6 is discharged to the outside through the drain pipe 14.
It is necessary to connect the drain pipe 14 to a drain recovery system lower than the installation level of the oil tank 1, and there is a problem that the system becomes complicated.
【０００９】また、油面レベルスイッチの作動を確認す
る際、弁を操作するが、この操作性を考えて弁の数を減
らすことについても検討を加えた。本発明の目的は、油
面計の油面レベルスイッチの作動の確認時、油面計内の
油を外部に排出する必要がなく、また操作する弁の数が
少なくてすむ油タンク装置の油面レベルスイッチの試験
装置を提供することである。When the operation of the oil level switch is checked, the valve is operated. Considering this operability, the number of valves was reduced. An object of the present invention is to check the operation of an oil level switch of an oil level gauge, so that the oil in the oil level gauge does not need to be discharged to the outside and the number of valves to be operated can be reduced. An object of the present invention is to provide a test device for a surface level switch.
【００１０】[0010]
【課題を解決するための手段】上記課題を解決するため
に、本発明によれば油を貯留する油タンクと、この油タ
ンク内の油を外部に供給する油ポンプと、油タンク内の
油面レベルを検出する油面レベルスイッチとを備える油
タンク装置の前記油面レベルスイッチの作動を確認する
油タンク装置の油面レベルスイッチの試験装置におい
て、油タンクの側壁に沿って立ち、上下端開口が閉鎖さ
れ、前記油面レベルスイッチが設けられる油筒、この油
筒の上部と油タンクの油面より上の空間に接する上部と
に接続する上部管、及び油筒の下部と油タンクの油面よ
り下の油に接する下部とに接続し、第１の弁を設けた下
部管からなる油面計と、油筒に挿入され、下部管の油筒
との接続部の管口に噴出口が面し、噴出口からの噴流に
より油筒内の油を吸引して下部管を経て油タンクに流入
させるエゼクタノズルと、このエゼクタノズルの駆動流
体の入口と油ポンプの吐出管とに接続し、第２の弁を設
けた試験用給油管とを備えるものとする。According to the present invention, there is provided an oil tank for storing oil, an oil pump for supplying the oil in the oil tank to the outside, and an oil pump in the oil tank. An oil level tester for an oil tank device for confirming the operation of the oil level switch of an oil tank device comprising an oil level switch for detecting an oil level, wherein the test device stands along the side wall of the oil tank and has upper and lower ends. An opening is closed and an oil cylinder provided with the oil level switch, an upper pipe connected to an upper part of the oil cylinder and an upper part in contact with a space above the oil level of the oil tank, and a lower part of the oil cylinder and an oil tank. An oil level gauge consisting of a lower pipe provided with a first valve connected to the lower part in contact with oil below the oil level, and an oil level gauge inserted into the oil cylinder and injected into a port of a connection part of the lower pipe with the oil cylinder. The outlet faces and the oil in the cylinder is An ejector nozzle which flows through the lower pipe into the oil tank, and a test oil supply pipe connected to the drive fluid inlet of the ejector nozzle and the discharge pipe of the oil pump and provided with a second valve. I do.
【００１１】また、上記の油タンク，油ポンプ及び油面
レベルスイッチを備える油タンク装置の前記油面レベル
スイッチの作動を確認する油タンク装置の油面レベルス
イッチの試験装置において、油タンクの側壁に沿って立
ち、上下端開口が閉鎖され、前記油面レベルスイッチが
設けられる油筒、この油筒の上部と油タンクの油面より
上の空間に接する上部とに接続する上部管、及び油筒の
下部と油タンクの油面より下の油に接する下部とに接続
し、絞りを設けた下部管からなる油面計と、油筒に挿入
され、下部管の油筒との接続部の管口に噴出口が面し、
噴出口からの噴流により油筒内の油を吸引して下部管を
経て油タンクに流入させるエゼクタノズルと、下部管の
前記管口と絞りとの間の下部管から分岐して油筒に接続
し、逆止め弁が設けられ、下部管内の油を油筒に送油す
る送油管と、エゼクタノズルの駆動流体の入口と油ポン
プの吐出管とに接続し、弁を設けた試験用給油管とを備
えるものとする。In the above-described test apparatus for checking the operation of the oil level switch of the oil tank apparatus having the oil tank, the oil pump and the oil level switch, the side wall of the oil tank may be provided. , The upper and lower openings are closed, the oil level switch is provided, an oil pipe connected to an upper part of the oil cylinder and an upper part in contact with a space above the oil level of the oil tank, and an oil pipe. An oil level gauge consisting of a lower pipe with a throttle connected to the lower part of the cylinder and the lower part of the oil tank that is in contact with the oil below the oil level, and a connecting part between the oil cylinder of the lower pipe and the oil pipe inserted into the oil cylinder. The spout faces the mouth of the pipe,
An ejector nozzle that sucks oil in the oil cylinder by the jet from the jet port and flows into the oil tank through the lower pipe, and branches from the lower pipe between the port and the throttle of the lower pipe to connect to the oil cylinder. A check valve, provided with an oil feed pipe for feeding oil in the lower pipe to the oil cylinder, a test oil supply pipe connected to the drive fluid inlet of the ejector nozzle and the discharge pipe of the oil pump, and provided with a valve. Are provided.
【００１２】また、油を貯留する油タンクと、この油タ
ンク内の油を外部に供給する油ポンプと、油タンク内の
油面レベルを検出する油面レベルスイッチとを備える油
タンク装置の前記油面レベルスイッチの作動を確認する
油タンク装置の油面レベルスイッチの試験装置におい
て、油タンク内の油に浸されて油タンクの側壁に沿って
立ち、上端開口は油タンクの油面より上の空間に連通
し、下端開口は閉鎖され、前記油面レベルスイッチが設
けられる油筒及びこの油筒の下部に接続して油中に開口
し、絞りを設けた下部管からなる油面計と、油筒に挿入
され、下部管の油筒との接続部の管口に噴出口が面し、
噴出口からの噴流により油筒内の油を吸引して下部管を
経て油タンクに流入させるエゼクタノズルと、下部管の
前記管口と絞りとの間の下部管から分岐して油筒に接続
し、逆止め弁が設けられ、下部管内の油を油筒に送油す
る送油管と、エゼクタノズルの駆動流体の入口と油ポン
プの吐出管とに接続し、弁を設けた試験用給油管とを備
えるものとする。Further, the oil tank device comprises an oil tank for storing oil, an oil pump for supplying the oil in the oil tank to the outside, and an oil level switch for detecting an oil level in the oil tank. In the test equipment of the oil level switch of the oil tank device that checks the operation of the oil level switch, the oil level switch is immersed in the oil in the oil tank and stands along the side wall of the oil tank. And an oil level gauge comprising an oil cylinder provided with the oil level switch and a lower pipe connected to the lower part of the oil cylinder and opened in oil and provided with a throttle. , Is inserted into the oil cylinder, the spout faces the mouth of the connection part of the lower pipe with the oil cylinder,
An ejector nozzle that sucks oil in the oil cylinder by the jet from the jet port and flows into the oil tank through the lower pipe, and branches from the lower pipe between the port and the throttle of the lower pipe to connect to the oil cylinder. A check valve, provided with an oil feed pipe for feeding oil in the lower pipe to the oil cylinder, a test oil supply pipe connected to the drive fluid inlet of the ejector nozzle and the discharge pipe of the oil pump, and provided with a valve. Are provided.
【００１３】[0013]
【作用】油面計の油筒に設けられた油タンクの油面レベ
ルを検出する油面レベルスイッチの作動の確認は、請求
項１による手段によれば下記のようにして行なわれる。
油タンクの油面レベルスイッチが油面低を検出するもの
であれば、油面計の下部管の第１の弁を開、試験用給油
管の第２の弁を開にすれば、油ポンプにより昇圧された
油タンクからの油が試験用給油管を経て噴出口が下部管
の油筒との接続部の管口に面するエゼクタノズルに流入
し、噴出口から油は噴流となって下部管に向って噴出さ
れる。したがって、この噴流により油筒内の油は吸引さ
れて下部管を経て油タンク内に流入し、油筒内の油面は
低下する。この油面低下により油面低の油面レベルスイ
ッチを作動させ、その作動を確認する。The operation of the oil level switch for detecting the oil level of the oil tank provided in the oil cylinder of the oil level gauge is confirmed as follows according to the means according to claim 1.
If the oil level switch of the oil tank detects a low oil level, the first valve of the lower pipe of the oil level gauge is opened, and if the second valve of the test oil supply pipe is opened, the oil pump is opened. The oil from the oil tank, which has been pressurized, flows through the test oil supply pipe into the ejector nozzle facing the port at the connection with the oil cylinder of the lower pipe, and the oil forms a jet from the jet port into the lower part. It is squirted toward a pipe. Therefore, the oil in the oil cylinder is sucked by this jet and flows into the oil tank through the lower pipe, and the oil level in the oil cylinder decreases. The low oil level is activated by the low oil level, and the operation is confirmed.
【００１４】一方、油面レベルスイッチが油タンクの油
面高を検出するものであれば、下部管の第１の弁を閉、
試験用給油管の第２の弁を開にすれば、油ポンプにより
昇圧された油タンクからの油は試験用給油管及び第１の
弁の閉によりエゼクタ作用が停止されたエゼクタノズル
を経て油筒内に流入し、油筒内の油面は上昇する。この
油面の上昇により油面高の油面レベルスイッチを作動さ
せ、その作動を確認する。On the other hand, if the oil level switch detects the oil level of the oil tank, the first valve of the lower pipe is closed,
When the second valve of the test oil supply pipe is opened, the oil from the oil tank pressurized by the oil pump passes through the test oil supply pipe and the ejector nozzle whose ejector action has been stopped by closing the first valve. The oil flows into the cylinder, and the oil level in the oil cylinder rises. When the oil level rises, the oil level switch having a high oil level is operated, and the operation is confirmed.
【００１５】また、油レベルスイッチの作動の確認は、
請求項２の手段によれば下記のようにして行なわれる。
油面レベルスイッチが油タンクの油面低を検出するもの
であれば、試験用給油管の弁を開にすれば、油ポンプに
より昇圧された油タンクからの油は試験用給油管を経て
前述のように配設されたエゼクタノズルに流入し、噴出
口から噴流となって下部管に向って噴出される。この噴
流により油筒内の油は絞りを有する下部管を経て油タン
クに流入し、油筒内の油面は低下する。この油面低下に
より油面低の油面レベルスイッチは作動し、その作動を
確認する。なお、この場合、下部管を流れる油の絞り前
の圧力は、油タンクの油のヘッド（最大でも逆止め弁の
クラッキング圧）より小さく、逆止め弁は閉状態とな
り、下部管を流れる油は送油管を経て油筒内には流入し
ない。The operation of the oil level switch is checked by
According to the means of the second aspect, the operation is performed as follows.
If the oil level switch detects a low oil level in the oil tank, open the valve of the test oil supply pipe, and the oil from the oil tank pressurized by the oil pump passes through the test oil supply pipe as described above. Flows into the ejector nozzle arranged as described above, and is ejected from the ejection port as a jet toward the lower pipe. By this jet, the oil in the oil cylinder flows into the oil tank via the lower pipe having the throttle, and the oil level in the oil cylinder decreases. This low oil level activates the low oil level switch and confirms its operation. In this case, the pressure of the oil flowing through the lower pipe before the throttle is smaller than the oil head of the oil tank (at most, the cracking pressure of the check valve), the check valve is closed, and the oil flowing through the lower pipe is It does not flow into the oil cylinder via the oil supply pipe.
【００１６】一方、油面レベルスイッチが油タンクの油
面高を検出するものであれば、試験用給油管の弁を上記
よりさらに開けることにより、エゼクタノズルに供給す
る油量を増加させ、下部管の絞り前の圧力を逆止め弁の
クラッキング圧より大きくすれば、下部管を流れる油が
逆止め弁を開にして送油管を経て油筒内に流入し、油筒
内の油面は上昇する。この油面の上昇により油面高の油
面レベルスイッチを作動させ、その作動を確認する。On the other hand, if the oil level switch detects the oil level of the oil tank, the valve of the test oil supply pipe is further opened to increase the amount of oil supplied to the ejector nozzle. If the pressure before throttling the pipe is greater than the cracking pressure of the check valve, the oil flowing through the lower pipe opens the check valve, flows into the oil cylinder through the oil feed pipe, and the oil level in the oil cylinder rises I do. When the oil level rises, the oil level switch having a high oil level is operated, and the operation is confirmed.
【００１７】また、油面レベルスイッチの作動の確認
は、請求項３の手段によれば下記のようにして行なわれ
る。この場合、油面計が油タンク内に配設される他は請
求項２の手段と同じ手段となっているので、油面レベル
スイッチが油タンクの油面低を検出するもの、また油面
高を検出するものの場合とも、請求項２の油面レベルス
イッチの確認方法と同じである。The operation of the oil level switch is confirmed in the following manner. In this case, except that the oil level gauge is disposed in the oil tank, it is the same means as the means of claim 2, so that the oil level switch detects whether the oil level of the oil tank is low. The method for detecting the height is the same as the method for confirming the oil level switch of the second aspect.
【００１８】[0018]
【実施例】以下図面に基づいて本発明の実施例について
説明する。図１は本発明の請求項１の実施例による油面
レベルスイッチの試験装置を備えた油タンク装置の系統
図である。なお、図１及び後述する図２，図３におい
て、図４に示す部品と同一部品には同じ符号を付し、そ
の説明を省略する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram of an oil tank device provided with a test device for an oil level switch according to a first embodiment of the present invention. 1 and FIGS. 2 and 3 described later, the same components as those shown in FIG. 4 are denoted by the same reference numerals, and the description thereof will be omitted.
【００１９】図１において図４と異なるのは、エゼクタ
ノズル２１を油面計５の油筒６に、その噴出口が下部管
９の油筒６との接続部の管口に面するように挿入して取
付け、エゼクタノズル２１の駆動流体の入口をテスト弁
１７を設けた試験用給油管１８に接続したことである。
このような構成により、機器の通常運転時には試験用給
油管１８のテスト弁１７を閉、下部管９の止め弁８を開
にし、油面計５と油タンク１とを連通させて油面計５の
作用を得る。FIG. 1 differs from FIG. 4 in that the ejector nozzle 21 faces the oil cylinder 6 of the oil level gauge 5 and the ejection port faces the port of the lower pipe 9 at the connection with the oil cylinder 6. That is, the inlet of the drive fluid of the ejector nozzle 21 was connected to the test oil supply pipe 18 provided with the test valve 17.
With such a configuration, during normal operation of the equipment, the test valve 17 of the test oil supply pipe 18 is closed, the stop valve 8 of the lower pipe 9 is opened, and the oil level gauge 5 and the oil tank 1 are communicated to make the oil level gauge 5 is obtained.
【００２０】ここで、油面低を検出する油面低レベルス
イッチ１１の作動を確認するときには、下部管９の止め
弁８を開、試験用給油管１８のテスト弁１７を開にすれ
ば、油ポンプ１５により昇圧された油タンク１からの油
は試験用給油管１８を経てエゼクタノズル２１に流入
し、その噴出口から噴流となって下部管９に向って噴出
される。この噴流により油筒６内の油は吸引されて下部
管９を経て油タンク１内に流入するので、油筒６内の油
面は低下する。この油面低下により油面低レベルスイッ
チ１１は作動し、その作動を確認できる。Here, when confirming the operation of the low oil level switch 11 for detecting the low oil level, the stop valve 8 of the lower pipe 9 is opened and the test valve 17 of the test oil supply pipe 18 is opened. The oil from the oil tank 1 pressurized by the oil pump 15 flows into the ejector nozzle 21 via the test oil supply pipe 18, and is jetted from the jet port toward the lower pipe 9. The oil in the oil cylinder 6 is sucked by this jet and flows into the oil tank 1 through the lower pipe 9, so that the oil level in the oil cylinder 6 decreases. This low oil level causes the low oil level switch 11 to operate, and its operation can be confirmed.
【００２１】一方、油タンク１の油面高を検出する油面
高レベルスイッチ１２の作動を確認するときには、下部
管９の止め弁８を閉、試験用給油管１８のテスト弁１７
を開にすれば、油ポンプ１５により昇圧された油タンク
１からの油は試験用給油管１８を流れ、止め弁８の閉に
よりエゼクタ作用が停止されたエゼクタノズル２１を経
由して油筒６内に流入するので、油筒６の油面は上昇す
る。この油面上昇により油面高レベルスイッチ１２は作
動し、その作動を確認できる。On the other hand, when confirming the operation of the oil level high level switch 12 for detecting the oil level of the oil tank 1, the stop valve 8 of the lower pipe 9 is closed and the test valve 17 of the test oil supply pipe 18 is closed.
Is opened, the oil from the oil tank 1 pressurized by the oil pump 15 flows through the test oil supply pipe 18, passes through the ejector nozzle 21 whose ejector action is stopped by closing the stop valve 8, and the oil cylinder 6 The oil level of the oil cylinder 6 rises. The oil level rise causes the oil level high level switch 12 to operate, and the operation can be confirmed.
【００２２】なお、油面低，高レベルスイッチ１１，１
２の作動確認時に操作する弁は止め弁８，テスト弁１７
だけでよく、図４における操作する弁の数より少ない。
図２は本発明の請求項２の実施例による油面レベルスイ
ッチの試験装置を備える油タンク装置の系統図である。
図２において、下部管９に図１に示す止め弁８の代りに
絞り２３と、下部管９の油筒６との接続部の管口と絞り
２３との間の下部管９から分岐し、逆止め弁２４を備え
て油筒６に接続する送油管２５とを設けた他は図１と同
じである。なお、逆止め弁２４のクラッキング圧力は
０．３kg／cm2 程度に調整しておくのがよい。The oil level low and high level switches 11, 1
The valves operated when confirming the operation of 2 are the stop valve 8 and the test valve 17
Only less than the number of valves to operate in FIG.
FIG. 2 is a system diagram of an oil tank device provided with an oil level switch testing device according to a second embodiment of the present invention.
In FIG. 2, the lower pipe 9 branches from the throttle 23 in place of the stop valve 8 shown in FIG. 1, and the lower pipe 9 between the throttle port 23 of the connection part of the lower pipe 9 with the oil cylinder 6 and the throttle 23, It is the same as FIG. 1 except that an oil feed pipe 25 connected to the oil cylinder 6 with a check valve 24 is provided. The cracking pressure of the check valve 24 is preferably adjusted to about 0.3 kg / cm 2 .
【００２３】このような構成により、機器の通常運転時
には試験用給油管１８のテスト弁１７を閉にして油面計
５の作用を得る。ここで、油タンク１の油面低を検出す
る油面低レベルスイッチ１１の作動を確認するときに
は、試験用給油管１８のテスト弁１７を開にすれば、油
ポンプ１５により昇圧された油タンク１からの油は試験
用給油管１８を経てエゼクタノズル２１に流入し、その
噴出口から噴流となって下部管９に向って噴出される。
この噴流により油筒６内の油は吸引されて下部管９内を
流れ、絞り２３を経て油タンク１内に流入するので、油
筒６内の油面は低下する。この油面低下により油面低レ
ベルスイッチ１１は作動し、その作動を確認できる。な
お、この場合、下部管９を流れる油の絞り２３前の圧力
は、油タンク１の油のヘッド（最大でも逆止め弁２４の
クラッキング圧の０．３kg／cm2 程度）より小さく、逆
止め弁２４は閉状態となり、下部管９内の油は送油管２
５を経て油筒６内に流入しない。With such a configuration, the test valve 17 of the test oil supply pipe 18 is closed at the time of normal operation of the equipment to obtain the effect of the oil level gauge 5. Here, when confirming the operation of the low oil level switch 11 for detecting the low oil level of the oil tank 1, if the test valve 17 of the test oil supply pipe 18 is opened, the oil tank pressurized by the oil pump 15 is opened. The oil from 1 flows into the ejector nozzle 21 via the test oil supply pipe 18, and is jetted from the jet port toward the lower pipe 9.
The oil in the oil cylinder 6 is sucked by the jet and flows through the lower pipe 9 and flows into the oil tank 1 through the throttle 23, so that the oil level in the oil cylinder 6 decreases. This low oil level causes the low oil level switch 11 to operate, and its operation can be confirmed. In this case, the pressure of the oil flowing through the lower pipe 9 before the throttle 23 is smaller than the oil head of the oil tank 1 (at most, about 0.3 kg / cm 2 of the cracking pressure of the check valve 24). The valve 24 is closed, and the oil in the lower pipe 9 is
5 does not flow into the oil cylinder 6.
【００２４】一方、油タンク１の油面高を検出する油面
高レベルスイッチ１２の作動を確認するときには、テス
ト弁１７を前述の開度よりさらに大きく開け、エゼクタ
ノズル２１に流れる油量を増加して、絞り２３前の油の
圧力を逆止め弁２４のクラッキング圧より大きくして逆
止め弁２４を開にすることにより、下部管９を流れる油
は送油管２５を経て油筒６内に流入するので、油筒６の
油面は上昇する。この油面上昇により油面高レベルスイ
ッチ１２を作動させ、その作動を確認できる。On the other hand, when confirming the operation of the oil level high level switch 12 for detecting the oil level of the oil tank 1, the test valve 17 is opened more than the above-mentioned opening to increase the amount of oil flowing to the ejector nozzle 21. Then, by making the pressure of the oil before the throttle 23 greater than the cracking pressure of the check valve 24 and opening the check valve 24, the oil flowing through the lower pipe 9 flows into the oil cylinder 6 through the oil feed pipe 25. Since the oil flows, the oil level of the oil cylinder 6 rises. The oil level high level switch 12 is operated by this oil level rise, and the operation can be confirmed.
【００２５】なお、油面低，高レベルスイッチ１１，１
２の作動確認時、操作する弁はテスト弁１７だけでよ
く、図４における操作する弁の数より少ない。図３は請
求項３の実施例による油面レベルスイッチの試験装置を
備える油タンク装置の系統図である。図３において、上
端開口を油タンク１内の油面より上の空間に連通させ、
一方下端開口を閉鎖した油筒２６と、油筒２６の下部に
絞り２３を備えて接続し、管口が開放された下部管９と
を備えた油面計２７を、下部管９を有する油筒２６の下
部を油に浸して油タンク１の側壁に沿って油タンク１内
に設置し、エゼクタノズル２１の駆動流体の入口にテス
ト弁１７を設けた試験用給油管１８を油タンク１の側壁
を貫通して接続した他は図２に示すものと同じである。The oil level low and high level switches 11, 1
At the time of confirming the operation of 2, only the test valve 17 needs to be operated, which is smaller than the number of operated valves in FIG. FIG. 3 is a system diagram of an oil tank device provided with a test device for an oil level switch according to the third embodiment. In FIG. 3, the upper end opening communicates with the space above the oil level in the oil tank 1,
On the other hand, an oil level gauge 27 having an oil cylinder 26 having a closed lower end opening and a lower pipe 9 connected to the lower part of the oil cylinder 26 with a throttle 23 and having an opened port is provided. The lower part of the cylinder 26 is immersed in oil and installed in the oil tank 1 along the side wall of the oil tank 1, and the test oil supply pipe 18 provided with the test valve 17 at the inlet of the drive fluid of the ejector nozzle 21 is connected to the oil tank 1. It is the same as that shown in FIG. 2 except that it is connected through the side wall.
【００２６】このような構成により、機器の通常運転時
には、図２と同様にテスト弁１７を閉にして油面計２７
の作用を得、また油面低レベルスイッチ１１及び油面高
レベルスイッチ１２の作動を確認するときには、図２と
同様にテスト弁１７を開くことにより、油筒２６内の油
面を低下及び上昇させ、油面低，高レベルスイッチ１
１，１２の作動を確認できる。With this configuration, during normal operation of the equipment, the test valve 17 is closed and the oil level gauge 27 is
When the operation of the oil level low level switch 11 and the oil level high level switch 12 are confirmed, the test valve 17 is opened as in FIG. 2 to lower and raise the oil level in the oil cylinder 26. , Low oil level, high level switch 1
The operation of 1, 12 can be confirmed.
【００２７】なお、油面低，高レベルスイッチ１１，１
２の作動確認時、操作する弁は図２と同様にテスト弁１
７だけでよく、図４における操作する弁の数より少な
い。前記図１，図２，図３における止め弁８，テスト弁
１７を電動弁又は電磁弁にすることにより、遠隔自動試
験を行なうことができる。The oil level low and high level switches 11, 1
When the operation of No. 2 is confirmed, the valve to be operated is the test valve 1 as in FIG.
7, which is less than the number of valves to operate in FIG. Remote automatic tests can be performed by using a motor-operated valve or a solenoid valve for the stop valve 8 and the test valve 17 in FIGS. 1, 2 and 3.
【００２８】[0028]
【発明の効果】以上の説明から明らかなように、本発明
によれば請求項１，２，３において前述の構成により、
油タンクの油面低を検出する油面低レベルスイッチの作
動の確認は、エゼクタノズルの作用により、油面計の油
筒内の油面を低下させ、また油タンクの油面高を検出す
る油面高レベルスイッチの作動の確認は、請求項１にお
いてはエゼクタノズルのエゼタク作用を停止させたエゼ
クタノズルを経て、また請求項２，３では逆止め弁を有
する送油管により、油面計の油筒内の油面を上昇させて
行なうので、油筒レベルスイッチの作動を確認する際、
油タンク内の油を外部に排出する必要がなくなり、この
ため油タンク内の油を外部に排出するためのドレン回収
系統に接続するドレン管が不要となり、システムが簡素
化される。また、油面レベルスイッチの作動確認の際に
操作する弁の数も従来より減少し、作動確認の操作性が
向上する。As is apparent from the above description, according to the present invention, according to the first, second, and third aspects,
The operation of the oil level low level switch that detects the oil level of the oil tank is checked by lowering the oil level in the oil cylinder of the oil level gauge and detecting the oil level of the oil tank by the action of the ejector nozzle. The operation of the oil level high level switch is confirmed through the ejector nozzle in which the ejector function of the ejector nozzle is stopped in claim 1, and in the claims 2 and 3 by an oil feed pipe having a check valve. Since the operation is performed by raising the oil level in the oil cylinder, when checking the operation of the oil cylinder level switch,
There is no need to discharge the oil in the oil tank to the outside, so that a drain pipe connected to a drain recovery system for discharging the oil in the oil tank to the outside is not required, and the system is simplified. Further, the number of valves to be operated at the time of confirming the operation of the oil level switch is reduced as compared with the conventional case, and the operability of the operation confirmation is improved.
【図１】本発明の請求項１の実施例による油面レベルス
イッチの試験装置を備える油タンク装置の系統図FIG. 1 is a system diagram of an oil tank device equipped with an oil level switch test device according to an embodiment of the present invention.
【図２】本発明の請求項２の実施例による油面レベルス
イッチの試験装置を備える油タンク装置の系統図FIG. 2 is a system diagram of an oil tank device provided with a test device for an oil level switch according to a second embodiment of the present invention.
【図３】本発明の請求項３の実施例による油面レベルス
イッチの試験装置を備える油タンク装置の系統図FIG. 3 is a system diagram of an oil tank device provided with an oil level switch test device according to a third embodiment of the present invention.
【図４】本出願人の先願による油面レベルスイッチの試
験装置を備えた油タンク装置の系統図FIG. 4 is a system diagram of an oil tank device provided with a test device for an oil level switch according to the prior application of the present applicant.
１ 油タンク ５ 油面計 ６ 油筒 ７ 上部管 ８ 止め弁 ９ 下部管 １１ 油面低レベルスイッチ １２ 油面高レベルスイッチ １５ 油ポンプ １７ テスト弁 １８ 試験用給油管 ２１ エゼクタノズル ２３ 絞り ２４ 逆止め弁 ２５ 送油管 ２６ 油筒 ２７ 油面計 REFERENCE SIGNS LIST 1 oil tank 5 oil level gauge 6 oil cylinder 7 upper pipe 8 stop valve 9 lower pipe 11 oil level low level switch 12 oil level high level switch 15 oil pump 17 test valve 18 test oil supply pipe 21 ejector nozzle 23 throttle 24 check Valve 25 Oil pipe 26 Oil cylinder 27 Oil level gauge
Claims (3)
の油を外部に供給する油ポンプと、油タンク内の油面レ
ベルを検出する油面レベルスイッチとを備える油タンク
装置の前記油面レベルスイッチの作動を確認する油タン
ク装置の油面レベルスイッチの試験装置において、油タ
ンクの側壁に沿って立ち、上下端開口が閉鎖され、前記
油面レベルスイッチが設けられる油筒、この油筒の上部
と油タンクの油面より上の空間に接する上部とに接続す
る上部管、及び油筒の下部と油タンクの油面より下の油
に接する下部とに接続し、第１の弁を設けた下部管から
なる油面計と、油筒に挿入され、下部管の油筒との接続
部の管口に噴出口が面し、噴出口からの噴流により油筒
内の油を吸引して下部管を経て油タンクに流入させるエ
ゼクタノズルと、このエゼクタノズルの駆動流体の入口
と油ポンプの吐出管とに接続し、第２の弁を設けた試験
用給油管とを備えたことを特徴とする油タンク装置の油
面レベルスイッチの試験装置。1. An oil tank device comprising: an oil tank for storing oil; an oil pump for supplying the oil in the oil tank to the outside; and an oil level switch for detecting an oil level in the oil tank. In a test apparatus for an oil level switch of an oil tank device for confirming operation of an oil level switch, an oil cylinder which stands along a side wall of the oil tank, has upper and lower openings closed, and is provided with the oil level switch, An upper pipe connected to an upper part of the oil cylinder and an upper part of the oil tank in contact with a space above the oil level, and a first pipe connected to a lower part of the oil cylinder and a lower part of the oil tank in contact with the oil below the oil level; An oil level gauge consisting of a lower pipe provided with a valve and an oil outlet inserted into the oil cylinder, and a spout facing the port of the lower pipe connected to the oil cylinder. The oil in the oil cylinder is jetted by the jet from the spout. An ejector nozzle that sucks and flows into the oil tank through the lower pipe, A test oil supply pipe having a second valve connected to the drive fluid inlet of the ejector nozzle and the discharge pipe of the oil pump, and a test apparatus for an oil level switch of an oil tank device. .
の油を外部に供給する油ポンプと、油タンク内の油面レ
ベルを検出する油面レベルスイッチとを備える油タンク
装置の前記油面レベルスイッチの作動を確認する油タン
ク装置の油面レベルスイッチの試験装置において、油タ
ンクの側壁に沿って立ち、上下端開口が閉鎖され、前記
油面レベルスイッチが設けられる油筒、この油筒の上部
と油タンクの油面より上の空間に接する上部とに接続す
る上部管、及び油筒の下部と油タンクの油面より下の油
に接する下部とに接続し、絞りを設けた下部管からなる
油面計と、油筒に挿入され、下部管の油筒との接続部の
管口に噴出口が面し、噴出口からの噴流により油筒内の
油を吸引して下部管を経て油タンクに流入させるエゼク
タノズルと、下部管の前記管口と絞りとの間の下部管か
ら分岐して油筒に接続し、逆止め弁が設けられ、下部管
内の油を油筒に送油する送油管と、エゼクタノズルの駆
動流体の入口と油ポンプの吐出管とに接続し、弁を設け
た試験用給油管とを備えたことを特徴とする油タンク装
置の油面レベルスイッチの試験装置。2. An oil tank device comprising: an oil tank for storing oil; an oil pump for supplying oil in the oil tank to the outside; and an oil level switch for detecting an oil level in the oil tank. In a test apparatus for an oil level switch of an oil tank device for confirming operation of an oil level switch, an oil cylinder which stands along a side wall of the oil tank, has upper and lower openings closed, and is provided with the oil level switch, An upper pipe connected to the upper part of the oil cylinder and the upper part of the oil tank in contact with the space above the oil level, and a throttle connected to the lower part of the oil cylinder and the lower part of the oil tank in contact with the oil below the oil level An oil level gauge consisting of a lower pipe, which is inserted into an oil cylinder, and a jet port facing a pipe port at a connection portion of the lower pipe with the oil pipe, sucking oil in the oil cylinder by a jet from the jet port. An ejector nozzle that flows into the oil tank through the lower pipe, An oil feed pipe that branches from the lower pipe between the pipe port and the throttle and connects to the oil cylinder, is provided with a check valve, and feeds oil in the lower pipe to the oil cylinder; and a drive fluid for the ejector nozzle. A test apparatus for an oil level switch of an oil tank device, comprising: a test oil supply pipe connected to an inlet and a discharge pipe of an oil pump and provided with a valve.
の油を外部に供給する油ポンプと、油タンク内の油面レ
ベルを検出する油面レベルスイッチとを備える油タンク
装置の前記油面レベルスイッチの作動を確認する油タン
ク装置の油面レベルスイッチの試験装置において、油タ
ンク内の油に浸されて油タンクの側壁に沿って立ち、上
端開口は油面より上の空間に連通し、下端開口は閉鎖さ
れ、前記油面レベルスイッチが設けられる油筒及びこの
油筒の下部に接続して油中に開口し、絞りを設けた下部
管からなる油面計と、油筒に挿入され、下部管の油筒と
の接続部の管口に噴出口が面し、噴出口からの噴流によ
り油筒内の油を吸引して下部管を経て油タンクに流入さ
せるエゼクタノズルと、下部管の前記管口と絞りとの間
の下部管から分岐して油筒に接続し、逆止め弁が設けら
れ、下部管内の油を油筒に送油する送油管と、エゼクタ
ノズルの駆動流体の入口と油ポンプの吐出管とに接続
し、弁を設けた試験用給油管とを備えたことを特徴とす
る油タンク装置の油面レベルスイッチの試験装置。3. An oil tank device comprising an oil tank for storing oil, an oil pump for supplying oil in the oil tank to the outside, and an oil level switch for detecting an oil level in the oil tank. In the test equipment of the oil level switch of the oil tank device that checks the operation of the oil level switch, the oil level switch is immersed in the oil in the oil tank and stands along the side wall of the oil tank. An oil level gauge comprising a lower pipe, which is connected to the lower end opening, is provided with the oil level switch, is connected to a lower part of the oil cylinder, is opened in oil, and has a throttle provided with a throttle; The ejector nozzle faces the mouth of the lower pipe connecting to the oil cylinder, and the ejector nozzle sucks oil in the oil cylinder by the jet from the outlet and flows into the oil tank through the lower pipe. Branch from the lower pipe between the port of the lower pipe and the throttle A check valve is provided, and a valve is connected to the oil feed pipe that feeds the oil in the lower pipe to the oil pipe, the drive fluid inlet of the ejector nozzle, and the discharge pipe of the oil pump. A test device for an oil level switch of an oil tank device, comprising a test oil supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05273920A JP3129061B2 (en) | 1993-11-02 | 1993-11-02 | Oil level switch test equipment for oil tank equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05273920A JP3129061B2 (en) | 1993-11-02 | 1993-11-02 | Oil level switch test equipment for oil tank equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07127423A JPH07127423A (en) | 1995-05-16 |
| JP3129061B2 true JP3129061B2 (en) | 2001-01-29 |
Family
ID=17534417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05273920A Expired - Fee Related JP3129061B2 (en) | 1993-11-02 | 1993-11-02 | Oil level switch test equipment for oil tank equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3129061B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136234B (en) * | 2015-05-05 | 2018-03-16 | 中国能源建设集团广东省电力设计研究院有限公司 | The failure detector of heater water level detector |
-
1993
- 1993-11-02 JP JP05273920A patent/JP3129061B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07127423A (en) | 1995-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7584766B2 (en) | Overfill prevention valve for shallow tanks | |
| KR101254133B1 (en) | Apparatus for supplying water having buoyancy aspirator | |
| WO1996041956A1 (en) | Magnetically controlled liquid transfer system | |
| JP3129061B2 (en) | Oil level switch test equipment for oil tank equipment | |
| JP2007247282A (en) | Toilet bowl washing device | |
| CN113574230B (en) | Flush water tank device and flush toilet device provided with same | |
| JPH074488B2 (en) | Backwash device for jet pump and backwash method thereof | |
| JP3681675B2 (en) | Scum removal device for sewage tank | |
| JPH05238473A (en) | Ballast water stripping device | |
| JP3970472B2 (en) | Scum removal device for sewage tank | |
| JP3696350B2 (en) | Air pump device | |
| JP3349035B2 (en) | Defoaming device for horizontal drain pipe | |
| KR200259205Y1 (en) | A liquid fixed quantity pour into device | |
| JP3434954B2 (en) | Hydraulic tester for different diameter pipe | |
| JP3943803B2 (en) | Liquid injection device | |
| JPH08197531A (en) | Method for removing residual concrete from concrete conveying pipe | |
| KR100868069B1 (en) | Apprautus for auto-supplying replenishing water to Priming tank | |
| JP3315307B2 (en) | Defoaming device for horizontal drain pipe | |
| JPH0315673Y2 (en) | ||
| JP2522210Y2 (en) | Wave making equipment | |
| JP2557169Y2 (en) | Bathtub with bubble jet nozzle | |
| JP2905396B2 (en) | Terminal test equipment for sprinkler fire extinguishing equipment | |
| JP3640131B2 (en) | Bathtub with bubble jet nozzle | |
| JP2008074280A (en) | Bilge block supporting device for marine vessel | |
| KR20030018348A (en) | A liquid fixed quantity pour into device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071117 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081117 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091117 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |