JPH01242876A - Method for controlling pressure of mechanical seal and control device thereof - Google Patents
Method for controlling pressure of mechanical seal and control device thereofInfo
- Publication number
- JPH01242876A JPH01242876A JP63067424A JP6742488A JPH01242876A JP H01242876 A JPH01242876 A JP H01242876A JP 63067424 A JP63067424 A JP 63067424A JP 6742488 A JP6742488 A JP 6742488A JP H01242876 A JPH01242876 A JP H01242876A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- temperature
- mechanical seal
- electromagnet
- sliding part
- 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/346—Pressing means the pressing force varying during operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3492—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member with monitoring or measuring means associated with the seal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はメカニカルシールの面圧を制御する方法、及び
制御装置に係り、メカニカルシール部の作動条件に応じ
て最適な面圧を与え得るように改良した制御方法及び制
御装置に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method and a control device for controlling the surface pressure of a mechanical seal, and a method and a control device for controlling the surface pressure of a mechanical seal. The present invention relates to a control method and control device that have been improved.
第２図は従来例のメカニカルシール装置を示す。 FIG. 2 shows a conventional mechanical seal device.
ケーシング７内に回転軸１が配置されている。A rotating shaft 1 is arranged within a casing 7.
図示の空間Ａは圧力流体封入部、Ｂは低圧部である。上
記の圧力流体を封止するため、１対の環状部材２、同３
が設けられている。The space A shown in the figure is a pressure fluid enclosure, and the space B is a low pressure part. In order to seal the above pressure fluid, a pair of annular members 2 and 3 are provided.
is provided.
上記の環状部材２は固定環であって、ホルダ６を介して
ケーシング７に固定され、シールカバー８で覆われてい
る。The annular member 2 is a fixed ring, which is fixed to the casing 7 via a holder 6 and covered with a seal cover 8.
前記の環状部材３は回転環であって１回転軸１に外嵌さ
れたスリーブ４に固着されている６前記１対の環状部材
２，３を密着せしめる封止効果を発揮させるため、面圧
付与用のバネ５が設けられている。The annular member 3 is a rotating ring, and is fixed to a sleeve 4 fitted onto the rotating shaft 1. In order to exert a sealing effect of bringing the pair of annular members 2 and 3 into close contact with each other, surface pressure is applied. A spring 5 for application is provided.
前記従来例における１対の環状部材２，３の面圧は、バ
ネ５の取付荷重によって定まり、自由に調節することは
出来なかった。The surface pressure of the pair of annular members 2 and 3 in the conventional example was determined by the mounting load of the spring 5 and could not be freely adjusted.
上記バネ５の取付荷重は設計的に定められ、その大小は
、主として許容漏洩量と期待寿命との兼ね合いによって
定められる。The mounting load of the spring 5 is determined by design, and its magnitude is determined mainly by the balance between allowable leakage amount and expected life.
即ち、完全な封止性能を発揮せしめて漏洩の絶無を期そ
うとすると、バネ５の取付荷重を大きくして面圧を上げ
なければならないが、面圧を上げることは摩耗の進行を
促進する。In other words, in order to achieve perfect sealing performance and eliminate leakage, it is necessary to increase the mounting load of the spring 5 to increase the surface pressure, but increasing the surface pressure accelerates the progress of wear. .
ところが、実際問題においては、封入流体の温度変化、
圧力変化１回転軸の回転速度、封入流体の粘度など、多
くの条件の影響を受けるので、最適面圧は絶えず変動す
る。However, in actual problems, the temperature change of the enclosed fluid,
Pressure Change: The optimum surface pressure constantly changes because it is affected by many conditions such as the rotational speed of the rotating shaft and the viscosity of the enclosed fluid.
しかし、従来のメカニカルシールにおいては、作動条件
の変化に応じて面圧を調整するという技術的思想は無か
った。However, in conventional mechanical seals, there was no technical idea to adjust the surface pressure according to changes in operating conditions.
本発明は上述の事情に鑑みて為されたもので、作動条件
に応じたメカニカルシールの面圧を制御する方法、及び
、上記の制御方法を実施するに好適な制御装置を提供す
ることを目的とする。The present invention has been made in view of the above-mentioned circumstances, and aims to provide a method of controlling the surface pressure of a mechanical seal according to operating conditions, and a control device suitable for carrying out the above-mentioned control method. shall be.
上記の目的を達成する為に創作した本発明は、面圧を可
変ならしめるため、押圧力の付与手段として電磁石を用
い、その通電を調節して面圧を制御する。The present invention, which was created to achieve the above object, uses an electromagnet as a pressing force applying means to make the surface pressure variable, and controls the surface pressure by adjusting the energization of the electromagnet.
上記の通電調節は、温度、圧力など、メカニカルシール
の性能に影響を与える作動条件を検出し、これに基づい
て適正圧力となるように行う。The above-mentioned energization adjustment is performed by detecting operating conditions such as temperature and pressure that affect the performance of the mechanical seal, and adjusting the pressure to an appropriate level based on the detected operating conditions.
前記の手段によれば、適正面圧に影響を与える諸条件に
基づいて電磁石の通電を制御するので。According to the above means, the energization of the electromagnet is controlled based on various conditions that affect the appropriate surface pressure.
電磁石の吸引力によって付与されているシール部面圧が
適正に保たれる。The surface pressure applied to the seal portion by the attraction force of the electromagnet is maintained appropriately.
第１図は本発明装置の１実施例を示す。この実施例は従
来例の装置（第２図）に本発明装置を適用して改良した
ものであって、第２図と同一の図面参照番号を付したも
のは前記従来例におけると同様乃至は類似の構成部材で
ある。FIG. 1 shows one embodiment of the device of the present invention. This embodiment is an improvement by applying the device of the present invention to the conventional device (FIG. 2), and the same drawing reference numbers as in FIG. Similar components.
なお、第１図においては読図の便宜上、ケーシング７の
ハツチングを省略しである。Note that, in FIG. 1, hatching on the casing 7 is omitted for convenience of reading.
スリーブ４は、回転軸１からの回転を回転環３に伝える
と共に、該回転環３を保持する役目を果たしている。バ
ネ５は固定環２を回転環３に押しつけるためのものでホ
ルダ６はそのバネ５と固定環２を保持している。検出器
１０，１１，１２゜１３はそれぞれ密封流体温度、密封
流体圧力、摺動部または摺動部付近の温度、漏洩量を測
定、検出するためのもので、それらからの出力信号１４
゜１５．１６，１７はそれぞれ制御装置９に入力されて
いる。制御装置９はこれらの信号をフィードバック量と
して制御量を算出し、その制御信号１９を電磁石１８に
送る。制御信号１９を受は取つた電磁石１８は電磁吸引
力によって荷重を発生し、荷重伝達軸２０を介して固定
環２に伝えて密封圧力を制御している。以上のシステム
における動作の一例をあげると摺動部属度検出器１２か
ら検出された温度が規定の温度よりも高い場合、あるい
は密封流体との温度差が大きすぎる場合には制御装置９
は密封面圧を低くなるように、すなわち荷重伝達軸２０
が押す力を低くして固定環２の押しつけ力を小さくし摺
動面の温度を下げるように制御する。また漏洩検出器１
３から検出された漏洩量が許容値よりも多い場合には、
密封面圧力を上げるように、すなわち荷重伝達軸２０が
押す力を高くして固定環２の押しつけ力を大きくし漏洩
量が低くなるように制御する４本発明では原理的にはバ
ネ５は必要で無いが電磁石などの不具合等が生じた時の
バックアップとして設けたものである。The sleeve 4 serves to transmit the rotation from the rotating shaft 1 to the rotating ring 3 and also to hold the rotating ring 3. The spring 5 is for pressing the fixed ring 2 against the rotating ring 3, and the holder 6 holds the spring 5 and the fixed ring 2. The detectors 10, 11, 12 and 13 are for measuring and detecting the sealed fluid temperature, sealed fluid pressure, temperature at or near the sliding part, and leakage amount, and output signals 14 from them are used.
15, 16, and 17 are input to the control device 9, respectively. The control device 9 calculates a control amount using these signals as feedback amounts, and sends the control signal 19 to the electromagnet 18 . The electromagnet 18 receiving the control signal 19 generates a load by electromagnetic attraction force, and transmits it to the fixed ring 2 via the load transmission shaft 20 to control the sealing pressure. To give an example of the operation of the above system, if the temperature detected by the sliding part attribute detector 12 is higher than the specified temperature, or if the temperature difference with the sealed fluid is too large, the control device 9
is designed to reduce the sealing surface pressure, that is, the load transmission shaft 20
Control is performed to reduce the pressing force of the fixed ring 2 and lower the temperature of the sliding surface. Also leak detector 1
If the leakage amount detected from 3 is greater than the allowable value,
In principle, the spring 5 is necessary in the present invention to increase the sealing surface pressure, that is, to increase the pushing force of the load transmission shaft 20, to increase the pushing force of the fixed ring 2, and to reduce the amount of leakage. Although this is not the case, it is provided as a backup in case something goes wrong with the electromagnet.
本発明を実施する際、前記のバネ５と荷重伝達軸２０と
の配列関係は、直列に配置してもよく、また並列に配置
してもよい。When carrying out the present invention, the spring 5 and the load transmission shaft 20 may be arranged in series or in parallel.
直列に配置した場合、即ち、電磁石１８の電磁出力を、
バネ５を介して固定環２に伝える構造を用いると、電磁
力の最大値が押圧力の最大値を決定し、電磁力が消失し
ても押圧力のｉ＆／ＪＸ限度を保持できる。When arranged in series, that is, the electromagnetic output of the electromagnet 18 is
If a structure is used in which the force is transmitted to the fixed ring 2 via the spring 5, the maximum value of the electromagnetic force determines the maximum value of the pressing force, and even if the electromagnetic force disappears, the i&/JX limit of the pressing force can be maintained.
並列に配置した場合、電磁吸引力とバネ力との合力が押
圧力を決定し、電磁吸引力が消失してもバネ力による最
小限の押圧力は保持される。When arranged in parallel, the resultant force of the electromagnetic attraction force and the spring force determines the pressing force, and even if the electromagnetic attraction force disappears, the minimum pressing force due to the spring force is maintained.
本発明装置を用いて本発明方法を実施すると。 When the method of the present invention is carried out using the apparatus of the present invention.
メカニカルシールの性能や寿命に影響を及ぼす作動条件
の変化に応じて、常に適正なシール部面圧が保持され、
シール性能の保持と耐久性の向上とに著しい効果を奏す
る。Appropriate seal surface pressure is always maintained in response to changes in operating conditions that affect the performance and lifespan of mechanical seals.
It has a remarkable effect on maintaining sealing performance and improving durability.
第１図は本発明に係るメカニカルシールの面圧制御装置
の１実施例を示し、断面図に制御系統図を付記した図で
ある。第２図は従来例のメカニカルシールの断面図であ
る。
１・・・回転軸、２・・・固定環、３・・・回転環、４
・・・スリーブ、５・・・バネ、６・・・ホルダ、７・
・・ケーシング、８・・・メカニカルシールカバー、９
・・・制御装置、１０・・・密封流体温度センサ、１１
・・・密封流体圧力センサ、１２・・・摺動部温度セン
サ、１３・・・漏洩量センサ、１４・・・密封流体温度
信号、１５・・・密封流体圧力信号、１６・・・摺動部
温度信号、１７・・・漏洩量信号、１８・・・電磁石、
１９・・・制御信号、２０・・・荷重伝達軸、２１・・
・電磁石ホルダ、Ａ・・・圧力密封流体部、Ｂ・・・低
圧部。FIG. 1 shows one embodiment of a surface pressure control device for a mechanical seal according to the present invention, and is a cross-sectional view with a control system diagram added thereto. FIG. 2 is a sectional view of a conventional mechanical seal. 1... Rotating shaft, 2... Fixed ring, 3... Rotating ring, 4
... Sleeve, 5... Spring, 6... Holder, 7.
...Casing, 8...Mechanical seal cover, 9
...Control device, 10...Sealed fluid temperature sensor, 11
...Sealed fluid pressure sensor, 12...Sliding part temperature sensor, 13...Leakage amount sensor, 14...Sealed fluid temperature signal, 15...Sealed fluid pressure signal, 16...Sliding temperature signal, 17...leakage amount signal, 18...electromagnet,
19... Control signal, 20... Load transmission shaft, 21...
・Electromagnet holder, A...Pressure sealing fluid part, B...Low pressure part.
Claims (1)
せしめる圧力を制御する方法において、 （ａ）面圧を与える駆動手段に電磁石を用い、 （ｂ）摺動部の温度、摺動部近傍の温度、封止流体の温
度、封止流体の圧力、及び摺動部からの漏洩量の内の少
なくとも何れか一つを検出し、 （ｃ）上記の検出値に基づいて、前記電磁石の通電を調
節することを特徴とする、メカニカルシールの面圧制御
方法。 ２、メカニカルシールを構成する１対の環状部材を密着
せしめる圧力を制御する装置において、 （ａ）上記環状部材に押圧力を与える電磁石と、 （ｂ）摺動部の温度、摺動部近傍の温度、封止流体の温
度、封止流体の圧力、及び摺動部からの漏洩量の内の少
なくとも何れか一つを検出するセンサと、 （ｃ）上記センサの出力信号を入力されて、前記電磁石
の通電を調節する自動制御装置とを設けたことを特徴と
するメカニカルシールの面圧制御装置。[Claims] 1. In a method of controlling the pressure that brings a pair of annular members constituting a mechanical seal into close contact, (a) using an electromagnet as a driving means for applying surface pressure; (b) controlling the temperature of the sliding part; , detecting at least one of the temperature near the sliding part, the temperature of the sealing fluid, the pressure of the sealing fluid, and the amount of leakage from the sliding part, (c) based on the above detected values; , A method for controlling surface pressure of a mechanical seal, comprising adjusting energization of the electromagnet. 2. In a device that controls the pressure that brings a pair of annular members that make up a mechanical seal into close contact, (a) an electromagnet that applies a pressing force to the annular members, and (b) the temperature of the sliding part and the temperature near the sliding part. a sensor that detects at least one of temperature, temperature of the sealing fluid, pressure of the sealing fluid, and leakage amount from the sliding part; (c) an output signal of the sensor is input; A surface pressure control device for a mechanical seal, comprising an automatic control device for adjusting energization of an electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63067424A JPH01242876A (en) | 1988-03-23 | 1988-03-23 | Method for controlling pressure of mechanical seal and control device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63067424A JPH01242876A (en) | 1988-03-23 | 1988-03-23 | Method for controlling pressure of mechanical seal and control device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01242876A true JPH01242876A (en) | 1989-09-27 |
Family
ID=13344519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63067424A Pending JPH01242876A (en) | 1988-03-23 | 1988-03-23 | Method for controlling pressure of mechanical seal and control device thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01242876A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5762342A (en) * | 1996-05-03 | 1998-06-09 | Durametallic Corporation | Mechanical seal with controller for regulating face contact pressure |
| EP1290367A4 (en) * | 1999-12-06 | 2003-09-03 | Crane John Inc | Monitoring seal system |
| DE102007026743A1 (en) * | 2007-06-06 | 2008-12-11 | Burgmann Industries Gmbh & Co. Kg | Method and device for determining the current operating state of a mechanical seal |
| EP3457008A1 (en) * | 2017-09-18 | 2019-03-20 | Hamilton Sundstrand Corporation | Electromagnetic cartridge seal |
| CN111473114A (en) * | 2016-02-23 | 2020-07-31 | 约翰起重机英国有限公司 | System and method for predictive diagnostics of mechanical systems |
-
1988
- 1988-03-23 JP JP63067424A patent/JPH01242876A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5762342A (en) * | 1996-05-03 | 1998-06-09 | Durametallic Corporation | Mechanical seal with controller for regulating face contact pressure |
| EP1290367A4 (en) * | 1999-12-06 | 2003-09-03 | Crane John Inc | Monitoring seal system |
| DE102007026743A1 (en) * | 2007-06-06 | 2008-12-11 | Burgmann Industries Gmbh & Co. Kg | Method and device for determining the current operating state of a mechanical seal |
| CN111473114A (en) * | 2016-02-23 | 2020-07-31 | 约翰起重机英国有限公司 | System and method for predictive diagnostics of mechanical systems |
| CN111473114B (en) * | 2016-02-23 | 2022-06-17 | 约翰起重机英国有限公司 | System and method for predictive diagnostics of a mechanical system |
| EP3457008A1 (en) * | 2017-09-18 | 2019-03-20 | Hamilton Sundstrand Corporation | Electromagnetic cartridge seal |
| US10794493B2 (en) | 2017-09-18 | 2020-10-06 | Hamilton Sunstrand Corporation | Electromagnetic cartridge seal |
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