TWI751210B - Liquid leak detection unit - Google Patents
Liquid leak detection unit Download PDFInfo
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Abstract
本發明之液體洩漏檢測單元係組裝於可動式軸(21)之液體洩漏檢測單元者，且具備：第1密封材(23A)，其設置於軸(21)之外周上，用以將液體密封於軸(21)之外周上之液側空間(60)；第2密封材(23B)，其設置於軸(21)之外周上，配置於軸(21)之軸方向上相對於第1密封材(23A)之液側空間(60)之相反側，且在與第1密封材(23A)之間界定密封間空間(65)；第1液體資訊取得裝置(110B)，其獲得位於密封間空間(65)之液體的液體資訊；及控制部(180)，其基於自第1液體資訊取得裝置(110B)獲得之資訊，監視位於密封間空間(65)內之液體狀態之變化。The liquid leakage detection unit of the present invention is assembled to the liquid leakage detection unit of the movable shaft (21), and includes: a first sealing material (23A) disposed on the outer periphery of the shaft (21) for sealing the liquid The liquid side space (60) on the outer circumference of the shaft (21); the second sealing material (23B), which is arranged on the outer circumference of the shaft (21), and is arranged in the axial direction of the shaft (21) relative to the first seal The opposite side of the liquid side space (60) of the material (23A), and the space between the seals (65) is defined between the first sealing material (23A); the first liquid information acquisition device (110B), which is located between the seals liquid information of the liquid in the space (65); and a control unit (180) for monitoring the change of the state of the liquid in the space (65) between the seals based on the information obtained from the first liquid information acquisition device (110B).
Description
本發明一般而言係關於一種液體洩漏檢測單元，更特定而言係關於一種組裝於可動式軸之液體洩漏檢測單元。 The present invention generally relates to a liquid leakage detection unit, and more particularly, to a liquid leakage detection unit assembled on a movable shaft.
關於檢測液體洩漏之先前技術，例如，於日本專利特開2016-45068號公報(專利文獻1)中，揭示有以視覺上一眼確認有無洩漏為目的之液體洩漏檢測單元。 Regarding the prior art for detecting liquid leakage, for example, Japanese Patent Laid-Open No. 2016-45068 (Patent Document 1) discloses a liquid leakage detection unit for visually confirming the presence or absence of leakage.
[專利文獻1]日本專利特開2016-45068號公報 [Patent Document 1] Japanese Patent Laid-Open No. 2016-45068
於上述液體洩漏檢測單元中，雖採用了根據軸之突出量而判別桿密封件與異形防塵密封件之間之壓力上升的機構，但對於用以檢測壓力上升之其他之更具體的構成，並未有任何揭示。 In the above-mentioned liquid leakage detection unit, although the mechanism for determining the pressure rise between the rod seal and the special-shaped dust seal according to the protrusion amount of the shaft is adopted, other more specific structures for detecting the pressure rise are not used. Nothing revealed.
本發明之目的在於解決上述課題，提供一種更確實地把握密封材之維護期，防止產生液體洩漏的液體洩漏檢測單元。 An object of the present invention is to solve the above-mentioned problems, and to provide a liquid leakage detection unit that can more reliably grasp the maintenance period of the sealing material and prevent the occurrence of liquid leakage.
根據本發明之液體洩漏檢測單元係組裝於可動式軸之液體洩漏檢測單元，且具備：第1密封材，其設置於上述軸之外周上，用以將液體密封 於上述軸之外周上之液側空間；第2密封材，其設置於上述軸之外周上，配置於上述軸方向上相對於第1密封材之上述液側空間之相反側，且在與上述第1密封材之間界定密封間空間；第1液體資訊取得裝置，其獲得位於上述密封間空間之液體的液體資訊；及控制部，其基於自上述第1液體資訊取得裝置獲得之資訊，監視位於上述密封間空間內之液體狀態之變化。 The liquid leakage detection unit according to the present invention is a liquid leakage detection unit assembled to a movable shaft, and includes a first sealing member provided on the outer periphery of the shaft to seal the liquid a liquid-side space on the outer periphery of the shaft; and a second sealing material provided on the outer periphery of the shaft, disposed on the opposite side of the liquid-side space with respect to the first sealing material in the axial direction, and on the opposite side of the liquid-side space with respect to the first sealing material. A space between seals is defined between the first sealing members; a first liquid information acquisition device that acquires liquid information of the liquid located in the space between the seals; and a control unit that monitors the information obtained from the first liquid information acquisition device based on the information obtained from the first liquid information acquisition device. Changes in the state of the liquid located in the space between the above-mentioned seals.
於其他形態中，上述第1液體資訊取得裝置為壓力開關，上述控制部係比較預設之特定壓力、與上述壓力開關所獲得之上述液側空間之液體之壓力，而監視上述密封間空間之液體狀態之變化。 In other forms, the first liquid information acquisition device is a pressure switch, and the control unit compares a preset specific pressure with the pressure of the liquid in the liquid side space obtained by the pressure switch, and monitors the space between the seals. Changes in liquid state.
於其他形態中，進而具備：第2液體資訊取得裝置，其獲得位於上述液側空間之液體的液體資訊；上述控制部係比較自上述第1液體資訊取得裝置獲得之上述密封間空間之液體資訊、與自上述第2液體資訊取得裝置獲得之上述液側空間之液體資訊，而監視上述密封間空間之液體狀態之變化。 In another aspect, it is further provided with: a second liquid information acquisition device that acquires liquid information of the liquid located in the liquid side space; the control part compares the liquid information of the space between the seals obtained from the first liquid information acquisition device , and the liquid information of the liquid side space obtained from the second liquid information acquisition device to monitor the change of the liquid state of the space between the seals.
於其他形態中，上述第1液體資訊取得裝置為第1壓力感測器，上述第2液體資訊取得裝置為第2壓力感測器，上述控制部係比較自上述第1液體資訊取得裝置獲得之上述密封間空間之壓力、與自上述第2液體資訊取得裝置獲得之上述液側空間之壓力，而監視上述密封間空間之液體壓力之變化。 In another form, the first liquid information acquisition device is a first pressure sensor, the second liquid information acquisition device is a second pressure sensor, and the control unit compares the information obtained from the first liquid information acquisition device. The pressure in the space between the seals and the pressure in the liquid-side space obtained from the second liquid information acquisition device are monitored for changes in the liquid pressure in the space between the seals.
於其他形態中，上述第1液體資訊取得裝置係第1流量感測器，上述第2液體資訊取得裝置係第2流量感測器，上述控制部係比較自上述第1液體資訊取得裝置獲得之上述密封間空間之流量、與自上述第2液體資訊取得裝置獲得之上述液側空間之流量，而監視上述密封間空間之液體流量之變化。 In another form, the first liquid information acquisition device is a first flow sensor, the second liquid information acquisition device is a second flow sensor, and the control unit compares the data obtained from the first liquid information acquisition device. The flow rate of the space between the seals and the flow rate of the liquid side space obtained from the second liquid information acquisition device are monitored for changes in the flow rate of the liquid in the space between the seals.
根據該液體洩漏檢測單元，可提供一種更確實地把握密封材之維護期，防止產生液體洩漏之液體洩漏檢測單元。 According to this liquid leakage detection unit, it is possible to provide a liquid leakage detection unit that can more reliably grasp the maintenance period of the sealing material and prevent the occurrence of liquid leakage.
21:軸 21: Shaft
21a:外周面 21a: Peripheral surface
23A:第1桿密封件 23A: 1st Rod Seal
23B:第2桿密封件 23B: 2nd rod seal
26:異形防塵密封件 26: Special-shaped dust seals
27:唇緣部 27: Lips
28:唇緣部 28: Lips
29:基部 29: Base
31:殼體 31: Shell
31b:內周面 31b: inner peripheral surface
32:凹部 32: Recess
33:貫通孔 33: Through hole
33P:感測孔 33P: Sensing hole
38A:第1密封槽 38A: 1st seal groove
38B:第2密封槽 38B: 2nd seal groove
39:第3密封槽 39: 3rd seal groove
60:液側空間 60: Liquid side space
65:密封間空間 65: Space between seals
70:外部空間 70: External Space
100:液體洩漏檢測單元 100: Liquid leak detection unit
100A:液體洩漏檢測單元 100A: Liquid leak detection unit
100B:液體洩漏檢測單元 100B: Liquid Leak Detection Unit
101:中心軸 101: Center shaft
110:第1壓力感測器 110: 1st pressure sensor
110A:第1流量感測器 110A: 1st flow sensor
110B:壓力開關 110B: Pressure switch
120:第1區塊 120: Block 1
120P:孔 120P: hole
150:第2壓力感測器 150: 2nd pressure sensor
150A:第2流量感測器 150A: 2nd flow sensor
160:油壓施加裝置 160: Oil pressure application device
170:第2區塊 170: Block 2
170P:施加孔 170P: Application hole
180:控制部 180: Control Department
L1:線 L1: Line
L2:線 L2: Line
圖1係顯示將實施形態1中之使用了壓力感測器之情形之液體洩漏檢測單元組裝於軸之狀態的剖視圖。 FIG. 1 is a cross-sectional view showing a state in which the liquid leak detection unit in the first embodiment using a pressure sensor is assembled to a shaft.
圖2係顯示實施形態1中之一次密封件為健全狀態之情形之壓力資訊之圖。 FIG. 2 is a graph showing the pressure information of the case where the primary seal in Embodiment 1 is in a healthy state.
圖3係顯示實施形態1中之一次密封件為更換時期之壓力資訊之圖。 FIG. 3 is a diagram showing the pressure information during the replacement period of the primary seal in Embodiment 1. FIG.
圖4係顯示實施形態1中之一次密封件未發揮功能之壓力資訊之圖。 FIG. 4 is a graph showing the pressure information of the non-functioning primary seal in Embodiment 1. FIG.
圖5係顯示將實施形態2中之使用了流量感測器之情形之液體洩漏檢測單元組裝於軸之狀態的剖視圖。 FIG. 5 is a cross-sectional view showing a state in which the liquid leak detection unit in the case of using the flow sensor in Embodiment 2 is assembled to a shaft.
圖6係顯示實施形態2中之一次密封件為健全狀態之情形之壓力資訊之圖。 FIG. 6 is a diagram showing the pressure information of the case where the primary seal in Embodiment 2 is in a healthy state.
圖7係顯示實施形態2中之一次密封件為更換時期之壓力資訊之圖。 FIG. 7 is a diagram showing pressure information at the time of replacement of the primary seal in Embodiment 2. FIG.
圖8係顯示實施形態2中之一次密封件未發揮功能之壓力資訊之圖。 FIG. 8 is a graph showing the pressure information of the non-functioning primary seal in Embodiment 2. FIG.
圖9係顯示將實施形態3中之使用了壓力開關之情形之液體洩漏檢測單元組裝於軸之狀態之剖視圖。 FIG. 9 is a cross-sectional view showing a state in which the liquid leak detection unit in the case where the pressure switch is used in Embodiment 3 is assembled to a shaft.
圖10係顯示實施形態3中之一次密封件為健全狀態之情形之壓力資訊之第1圖。 FIG. 10 is a first diagram showing pressure information when the primary seal in Embodiment 3 is in a healthy state.
圖11係顯示實施形態3中之一次密封件為健全狀態之情形之壓力資訊之第2圖。 FIG. 11 is a second diagram showing pressure information when the primary seal in Embodiment 3 is in a healthy state.
圖12係顯示實施形態3中之一次密封件為更換時期之壓力資訊之圖。 FIG. 12 is a diagram showing pressure information at the time of replacement of the primary seal in Embodiment 3. FIG.
圖13係顯示實施形態3中之一次密封件未發揮功能之壓力資訊之圖。 FIG. 13 is a graph showing the pressure information of the non-functioning primary seal in Embodiment 3. FIG.
對於基於本發明之各實施形態中之液體洩漏檢測單元，以下，參照圖式進行說明。另，於以下說明之各實施形態中，言及個數、量等時，除特別記述之情形外，本發明之範圍未必限定為該個數、量等。又，對於同一零件、相當之零件，有標註同一參照編號，不進行重複說明之情形。 The liquid leakage detection unit in each embodiment according to the present invention will be described below with reference to the drawings. In addition, in each embodiment described below, when referring to the number, amount, etc., the scope of the present invention is not necessarily limited to the number, amount, etc., unless otherwise specified. In addition, the same reference number is attached to the same part or equivalent part, and the description is not repeated.
(實施之形態1：液體洩漏檢測單元100) (Embodiment 1: Liquid leak detection unit 100 )
參照圖1，對於液體洩漏檢測單元100之構成進行說明。圖1係顯示將實施形態1中之使用了壓力感測器之情形之液體洩漏檢測單元100組裝於軸之狀態的剖視圖。
1 , the configuration of the liquid
參照圖1，本實施形態中之液體洩漏檢測單元100係組裝於軸21之組裝單元。軸21具有沿中心軸101而軸狀延伸之形狀。軸21係可動式之軸。於本實施形態中，設想有軸21為油壓缸之軸之情形。軸21沿中心軸101之軸方向往復運動。
Referring to FIG. 1 , the liquid
於軸21之外周上，設置有殼體31。殼體31具有沿中心軸101之軸方向而圓筒狀延伸之形狀。
On the outer periphery of the
於軸21之外周上，界定有液側空間60。於液側空間60內配置有油。液側空間60設置為用以使軸21動作之油被供給的油壓室。液側空間60係設置於中心軸101之軸方向中之殼體31之一側。於中心軸101之軸方向中之殼體31之另一側，界定有外部空間70。
On the outer periphery of the
本實施形態中之液體洩漏檢測單元100具有作為一次密封件之第1桿密封件23A、作為二次密封件之第2桿密封件23B、及作為三次密封件之異形防塵密封件26。
The liquid
第1桿密封件23A、第2桿密封件23B、及異形防塵密封件26係閉環狀之密封材。第1桿密封件23A、第2桿密封件23B、及異形防塵密封件26由橡膠等之彈性材料形成。第1桿密封件23A、第2桿密封件23B、及異形防塵密封件26設置於軸21之外周面21a上。
The
第1桿密封件23A、第2桿密封件23B、及異形防塵密封件26於中心軸101之軸方向隔開距離而設置。於中心軸101之軸方向上，第1桿密封件23A設置於液側空間60側，異形防塵密封件26設置於外部空間70側。第2桿密封件23B配置於第1桿密封件23A與異形防塵密封件26之間。
The
於殼體31，形成有第1密封槽38A、第2密封槽38B、及第3密封槽39。第1密封槽38A、第2密封槽38B、及第3密封槽39係具有自殼體31之內周面31b凹陷且以中心軸101為中心環繞之槽形狀。第1密封槽38A及第2密封槽38B具有矩形形狀之剖面。第3密封槽39具有於中心軸101之軸方向上朝外部空間70側開放之矩形形狀之剖面。
A
第1桿密封件23A收容於第1密封槽38A，第2桿密封件23B收容於第2密封槽38B，異形防塵密封件26收容於第3密封槽39。於軸21之外周上，於第1桿密封件23A與第2桿密封件23B之間，界定有密封間空間65。
The
第1桿密封件23A具有將配置於液側空間60之油密封之密封功能。
The
異形防塵密封件26具有唇緣部27(第1唇緣部)、唇緣部28(第2唇緣部)及基部29作為其構成部位。基部29設置於第3密封槽39。唇緣部27及唇緣部28自基部29向軸21伸出，與軸21之外周面21a接觸。於中心軸101之軸方向中，唇緣部27設置於密封間空間65側，唇緣部28設置於外部空間70側。
The special-shaped
第2桿密封件23B具有於自第1桿密封件23A洩漏油時，將自液側空間
60進入至密封間空間65側之油密封於密封間空間65內的功能。異形防塵密封件26藉由唇緣部28而具有防止塵埃自外部空間70向密封間空間65側侵入的功能。
The
於本實施形態中，採用了分為具有密封油之功能之第2桿密封件23B、與具有防止塵埃侵入之功能之異形防塵密封件26的密封材構成，亦可採用以一種密封構件兼用作第2桿密封件23B、與異形防塵密封件26的構成。
In the present embodiment, a sealing material composed of a
於殼體31形成有凹部32及貫通孔33。凹部32及貫通孔33係界定於中心軸101之軸方向中，第1桿密封件23A及第2桿密封件23B之間。凹部32具有自殼體31之內周面31b凹陷且以中心軸101為中心環繞的形狀。貫通孔33作為感測孔33P發揮功能。
A recessed
於殼體31連結有第1區塊120。於第1區塊120，設置有與殼體31之貫通孔33連通之孔120P。於該孔120P之出口區域，設置有作為通過感測孔33P獲得位於密封間空間65之液體之液體資訊之第1液體資訊取得裝置的第1壓力感測器110。由第1壓力感測器110計測之位於密封間空間65之液體的壓力係發送至控制部180。
The
於殼體31之液側空間60，連結有第2區塊170。於第2區塊170，設置有與液側空間60連通之施加孔170P。於施加孔170P，連結有油壓施加裝置160、及作為獲得位於液側空間60之液體之液體資訊之第2液體資訊取得裝置的第2壓力感測器150。藉由第2壓力感測器150計測之位於液側空間60之液體壓力係發送至控制部180。
The
其次，參照圖2至圖4，對控制部180中之位於密封間空間65之液體狀態即壓力之變化之監視進行說明。圖2係顯示一次密封件即第1桿密封件
23A為健全狀態之情形之壓力資訊之圖，圖3係顯示第1桿密封件23A為更換時期之壓力資訊之圖，圖4係顯示第1桿密封件23A未發揮功能之壓力資訊之圖。
Next, with reference to FIGS. 2 to 4 , the monitoring of the change in the pressure of the liquid state in the
於圖中，「推步驟」及「拉步驟」表示軸21之往復移動，於將軸21沿軸方向之一方向之移動稱為「推步驟」時，將與一方向相反之方向之移動稱為「拉步驟」。於以下所示之圖中亦同樣。
In the figure, the "push step" and the "pull step" represent the reciprocating movement of the
參照圖2，線L2係表示藉由第2壓力感測器150對位於液側空間60之液體之壓力之計測結果。於軸21之「拉步驟」中，可知液側空間60之壓力上升。
Referring to FIG. 2 , the line L2 represents the measurement result of the pressure of the liquid in the
另一方面，線L1係表示藉由第1壓力感測器110對位於密封間空間65之液體之壓力計測結果。於軸21之「拉步驟」中，密封間空間65之壓力亦未變化。
On the other hand, the line L1 represents the pressure measurement result of the liquid in the
根據該圖2之監視結果，一次密封件即第1桿密封件23A係將液側空間60與密封間空間65完全分離，未產生自液側空間60向密封間空間65之液體洩漏，可判別第1桿密封件23A為健全狀態。
According to the monitoring results of FIG. 2 , it can be determined that the
於圖3所示之狀態中，於軸21之「拉步驟」中，伴隨液側空間60之壓力上升，密封間空間65之壓力亦上升。其結果，產生了自液側空間60向密封間空間65之液體洩漏。然而，密封間空間65之壓力之上升值較液側空間60之壓力之上升值低，因而可判別為第1桿密封件23A之更換時期。
In the state shown in FIG. 3 , in the “pulling step” of the
於圖4所示之狀態中，於軸21之「拉步驟」中，伴隨液側空間60之壓力上升，密封間空間65之壓力亦上升。進而，密封間空間65之壓力之上升值與液側空間60之壓力之上升值大致相同。其結果，可判別第1桿密封件23A為不具有作為密封材之功能的狀態。可知為需要立即更換第1桿密
封件23A的時期。
In the state shown in FIG. 4, in the "pulling step" of the
根據如此之本實施形態中之液體洩漏檢測單元100，可提供更確實地把握第1桿密封件23A之維護時期，而防止液體洩漏之產生的液體洩漏檢測單元100。
According to the liquid
(實施之形態2：液體洩漏檢測單元100A)
(Embodiment 2: Liquid
參照圖5，對於液體洩漏檢測單元100A之構成進行說明。圖5係顯示將實施之形態2中之使用了流量感測器時之液體洩漏檢測單元100A組裝於軸21之狀態的剖視圖。
5 , the configuration of the liquid
本實施形態中之液體洩漏檢測單元100A之基本構成係與上述實施形態1中顯示之液體洩漏檢測單元100相同，不同點在於，作為獲得位於密封間空間65之液體之液體資訊的第1液體資訊取得裝置，於實施形態1中使用了第1壓力感測器110，與此相對，於本實施形態中使用了第1流量感測器110A之點。同樣，不同點還在於，作為獲得位於液側空間60之液體之液體資訊之第2液體資訊取得裝置，於實施形態1中使用了第2壓力感測器150，與此相對，於本實施形態中使用了第2流量感測器150A之點。
The basic configuration of the liquid
其次，參照圖6至圖8，對控制部180中之位於密封間空間65之液體狀態即流量之變化之監視進行說明。圖6係顯示一次密封件即第1桿密封件23A為健全狀態時之壓力資訊之圖，圖7係顯示第1桿密封件23A為更換時期之壓力資訊之圖，圖8係顯示第1桿密封件23A未發揮功能之壓力資訊之圖。
Next, with reference to FIGS. 6-8, the monitoring of the change of the flow rate of the liquid state in the
參照圖6，線L2係表示藉由第2流量感測器150A對位於液側空間60之液體之計測結果。於軸21之「推步驟」及「拉步驟」中，可知液側空間60之流量變化為正流及逆流。
Referring to FIG. 6 , the line L2 represents the measurement result of the liquid located in the
另一方面，線L1係表示藉由第1流量感測器110A對位於密封間空間65之液體之計測結果。於軸21之「拉步驟」中，密封間空間65之流量亦無變化。
On the other hand, the line L1 represents the measurement result of the liquid in the
根據該圖6之監視結果，一次密封件即第1桿密封件23A係將液側空間60與密封間空間65完全分離，未產生自液側空間60向密封間空間65之液體洩漏，可判別第1桿密封件23A為健全狀態。
According to the monitoring results of FIG. 6 , it can be determined that the
於圖7顯示之狀態中，於軸21之「推步驟」及「拉步驟」中，伴隨液側空間60之流量變化為正流及逆流，密封間空間65之流量亦變化為正流及逆流。其結果，可知產生了自液側空間60向密封間空間65之液體洩漏。然而，密封間空間65之流量之變化量低於液側空間60之流量之變化量，因而可判別為第1桿密封件23A之更換時期。
In the state shown in FIG. 7 , in the “push step” and the “pull step” of the
於圖8所示之狀態中，於軸21之「推步驟」及「拉步驟」中，伴隨液側空間60之流量變化為正流及逆流，密封間空間65之流量亦變化為正流及逆流。尤其，於「拉步驟」之後半部分中，密封間空間65之流量之正流值與液側空間60之流量之正流值近似。其結果，可判別第1桿密封件23A為不具有作為密封材之功能的狀態。可知為需要立即更換第1桿密封件23A的時期。
In the state shown in FIG. 8 , in the “push step” and “pull step” of the
根據如此之本實施形態中液體洩漏檢測單元100，可提供更確實地把握第1桿密封件23A之維護時期，並防止液體洩漏之產生的液體洩漏檢測單元100。
According to the liquid
(實施之形態3：液體洩漏檢測單元100B)
(Embodiment 3: Liquid
參照圖9，對於液體洩漏檢測單元100B之構成進行說明。圖9係顯示將實施形態3中之使用了壓力開關時之液體洩漏檢測單元100B組裝於軸21
之狀態的剖視圖。
9 , the configuration of the liquid
本實施形態中之液體洩漏檢測單元100B之基本構成係與上述實施形態1中顯示之液體洩漏檢測單元100相同，不同點在於，作為獲得位於密封間空間65之液體之液體資訊的第1液體資訊取得裝置，於實施形態1中使用了第1壓力感測器100，與此相對，於本實施形態中使用了壓力開關110B之點。於施加孔170P側，未設置液體資訊取得裝置。
The basic configuration of the liquid
其次，參照圖10至圖13，對控制部180中之位於密封間空間65之液體狀態即壓力之變化之監視進行說明。圖10及圖11係顯示一次密封件為健全狀態時之壓力資訊之第1圖及第2圖，圖12係顯示一次密封件為更換時期之壓力資訊之圖，圖13係顯示一次密封件未發揮功能之壓力資訊之圖。
Next, with reference to FIGS. 10-13, the monitoring of the change of the pressure of the liquid state in the
參照圖10，L2係顯示預設之特定壓力。線L1係表示藉由壓力開關110A對位於密封間空間65之液體之計測結果。於軸21之「推步驟」及「拉步驟」中，位於密封間空間65之液體之壓力亦未變化。
Referring to FIG. 10, L2 shows the preset specific pressure. Line L1 represents the measurement result of the liquid in the
根據該圖10之監視結果，一次密封件即第1桿密封件23A係將液側空間60與密封間空間65完全分離，未產生自液側空間60向密封間空間65之液體洩漏，可判別第1桿密封件23A為健全狀態。
According to the monitoring results of FIG. 10 , it can be determined that the
於圖11所示之狀態中，於軸21之「拉步驟」中，以線L1觀測密封間空間65之壓力上升。其結果，可知發生了自液側空間60向密封間空間65之液體洩漏。然而，因較設定為L2之特定壓力未滿50%，故可判別第1桿密封23A為健全狀態。
In the state shown in FIG. 11, in the "pulling step" of the
於圖12所示之狀態中，於軸21之「拉步驟」中，以線L1觀測密封間空間65之壓力上升。其結果，可知產生了自液側空間60向密封間空間65之液體洩漏。又，與圖11所示之壓力狀態比較，因超過了設定為L2之特
定壓力之50%以上，故可判別為第1桿密封件23A之更換時期。
In the state shown in FIG. 12, in the "pulling step" of the
於圖13所示之狀態中，於軸21之「拉步驟」中，可以線L1觀測密封間空間65之壓力，到達了預設之特定壓力之線L2。其結果，可判別第1桿密封件23A為不具有作為密封材之功能的狀態。可知為需要立即更換第1桿密封件23A的時期。
In the state shown in FIG. 13, in the "pulling step" of the
根據如此之本實施形態中之液體洩漏檢測單元100B，可提供更確實地把握第1桿密封件23A之維護時期，並防止液體洩漏之產生的液體洩漏檢測單元100B。
According to the liquid
本次所揭示之各實施形態之全部要點應視為例示而非限定者。本發明之範圍係藉由申請專利範圍顯示而非上述之說明，且意欲涵蓋與申請專利範圍均等之意味及範圍內之全部變更。 All the main points of each embodiment disclosed this time should be regarded as an example and not a limitation. The scope of the present invention is shown by the scope of the patent application rather than the description above, and is intended to cover the meaning equivalent to the scope of the patent application and all changes within the scope.
本發明係例如利用於油壓缸或流體泵等。 The present invention is applied to, for example, a hydraulic cylinder, a fluid pump, or the like.
21‧‧‧軸 21‧‧‧axis
21a‧‧‧外周面 21a‧‧‧Outer surface
23A‧‧‧第1桿密封件 23A‧‧‧1st rod seal
23B‧‧‧第2桿密封件 23B‧‧‧Second rod seal
26‧‧‧異形防塵密封件 26‧‧‧Special-shaped dust seals
27‧‧‧唇緣部 27‧‧‧Lip
28‧‧‧唇緣部 28‧‧‧Lip
29‧‧‧基部 29‧‧‧Base
31‧‧‧殼體 31‧‧‧Shell
31b‧‧‧內周面 31b‧‧‧Inner peripheral surface
32‧‧‧凹部 32‧‧‧Recess
33‧‧‧貫通孔 33‧‧‧Through hole
33P‧‧‧感測孔 33P‧‧‧Sensing hole
38A‧‧‧第1密封槽 38A‧‧‧1st sealing groove
38B‧‧‧第2密封槽 38B‧‧‧Second seal groove
39‧‧‧第3密封槽 39‧‧‧The third seal groove
60‧‧‧液側空間 60‧‧‧Liquid side space
65‧‧‧密封間空間 65‧‧‧Sealed space
70‧‧‧外部空間 70‧‧‧Exterior space
100‧‧‧液體洩漏檢測單元 100‧‧‧Liquid leak detection unit
101‧‧‧中心軸 101‧‧‧Central axis
110‧‧‧第1壓力感測器 110‧‧‧First Pressure Sensor
120‧‧‧第1區塊 120‧‧‧Block 1
120P‧‧‧孔 120P‧‧‧hole
150‧‧‧第2壓力感測器 150‧‧‧Second pressure sensor
160‧‧‧油壓施加裝置 160‧‧‧Hydraulic pressure application device
170‧‧‧第2區塊 170‧‧‧Block 2
170P‧‧‧施加孔 170P‧‧‧Application hole
180‧‧‧控制部 180‧‧‧Control Department
Claims (4)
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| TW106136464A TWI751210B (en) | 2017-10-24 | 2017-10-24 | Liquid leak detection unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106136464A TWI751210B (en) | 2017-10-24 | 2017-10-24 | Liquid leak detection unit |
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| Publication Number | Publication Date |
|---|---|
| TW201917369A TW201917369A (en) | 2019-05-01 |
| TWI751210B true TWI751210B (en) | 2022-01-01 |
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| Country | Link |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI804108B (en) * | 2021-12-16 | 2023-06-01 | 上銀科技股份有限公司 | Rotary table with liquid leakage detection function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4836460B1 (en) * | 1970-06-19 | 1973-11-05 | ||
| JPS6459030A (en) * | 1987-08-28 | 1989-03-06 | Nippon Spindle Mfg Co Ltd | Method and device for detecting cracking in liquid transportation pipe |
| US20040083818A1 (en) * | 2002-10-28 | 2004-05-06 | Dean Foote | Seal assembly with means for detecting seal failure |
| TW201608223A (en) * | 2014-08-22 | 2016-03-01 | Nihon Valqua Kogyo Kk | Liquid leak detection unit |
| TW201643398A (en) * | 2015-04-13 | 2016-12-16 | Wittenstein Ag | Sensor, driving member with sensor, driving apparatus with driving member, and evaluation method |
| WO2017077786A1 (en) * | 2015-11-04 | 2017-05-11 | Ｋｙｂ株式会社 | Liquid leak detection device |
-
2017
- 2017-10-24 TW TW106136464A patent/TWI751210B/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4836460B1 (en) * | 1970-06-19 | 1973-11-05 | ||
| JPS6459030A (en) * | 1987-08-28 | 1989-03-06 | Nippon Spindle Mfg Co Ltd | Method and device for detecting cracking in liquid transportation pipe |
| US20040083818A1 (en) * | 2002-10-28 | 2004-05-06 | Dean Foote | Seal assembly with means for detecting seal failure |
| TW201608223A (en) * | 2014-08-22 | 2016-03-01 | Nihon Valqua Kogyo Kk | Liquid leak detection unit |
| TW201643398A (en) * | 2015-04-13 | 2016-12-16 | Wittenstein Ag | Sensor, driving member with sensor, driving apparatus with driving member, and evaluation method |
| WO2017077786A1 (en) * | 2015-11-04 | 2017-05-11 | Ｋｙｂ株式会社 | Liquid leak detection device |
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