WO2011036917A1 - メカニカルシール - Google Patents
メカニカルシール Download PDFInfo
- Publication number
- WO2011036917A1 WO2011036917A1 PCT/JP2010/058419 JP2010058419W WO2011036917A1 WO 2011036917 A1 WO2011036917 A1 WO 2011036917A1 JP 2010058419 W JP2010058419 W JP 2010058419W WO 2011036917 A1 WO2011036917 A1 WO 2011036917A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal
- sealing element
- housing
- side sealing
- mechanical seal
- Prior art date
Links
Images
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
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/122—Shaft sealings using sealing-rings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
-
- 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
- F16J15/3448—Pressing means the pressing force resulting from fluid pressure
-
- 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
- F16J15/3464—Mounting of the seal
Definitions
- the present invention relates to a shaft seal device in which a liquid to be sealed used in a hot water pump and a hot oil pump such as a boiler feed water pump and a condensate pump in a thermal power plant is at a high temperature.
- a shaft seal device used for a hot water pump such as a boiler feed water pump or a condensate pump of a thermal power plant, a hot oil pump, or the like, for example, the one shown in FIG. 3 has been conventionally used.
- the shaft seal device has an inside type (a type that seals fluid that leaks from the outer periphery of the sliding surface toward the inner periphery) as a contact-type mechanical seal.
- a rotary-side sealing element 52 provided on a rotary shaft 50 side for driving a pump impeller (not shown) on the inside of the machine via a sleeve 51 so as to be rotatable integrally with the rotary shaft 50, and a pump housing 53
- the stationary-side sealing element 55 provided in a non-rotating state and axially movable on the seal cover 54 fixed to each other is opposed to each other by a spring 56 that urges the stationary-side sealing element 55 in the axial direction. They are designed to slide closely together.
- the mechanical seal is configured to be cooled by the circulation of the liquid to be sealed (hereinafter referred to as “prior art 1”, for example, see Patent Document 1).
- the prior art 1 described above has the following problems. (1) In order to cool the mechanical seal, a large amount of cooling water is required for the flushing pipe, the cooler, and the cooler. (2) A pumping ring is required, and the installation space and power consumption increase accordingly. When the pumping ring is attached, the length of the inner periphery of the stuffing box and the throttle part of the shaft cannot be increased, so that the cooling effect of the water cooling jacket built in the stuffing box is insufficient. (3) Since the mechanical seal is an inside / balance type single seal, it is necessary to attach a rotation-side sealing element to the outer periphery of the sleeve, and the mechanical seal size is increased by the thickness of the sleeve.
- the mechanical seal structure is stationary, outside, and balanced, with the mechanical seal mounted outside the stuffing box, the collar is mounted directly on the rotating shaft, and the rotating ring is on the outer periphery of the collar.
- those equipped with a flushing facility are known (hereinafter referred to as “Prior Art 2”, for example, see Patent Document 2).
- the prior art 2 also has a problem that a large amount of cooling water for the flushing pipe, the cooler, and the cooler is required to cool the mechanical seal.
- the present invention is a mechanical seal in which a liquid to be sealed used in a hot water pump and a hot oil pump such as a boiler water pump and a condensate pump in a thermal power plant is a high temperature, and a sealing element is mounted outside the stuffing box. And it aims at providing the mechanical seal of no flushing and a no cooler by employ
- a mechanical seal according to the present invention is firstly attached to a shaft sealing portion formed between a housing and a rotating shaft so as to seal between the housing and the rotating shaft. It is an outside type that seals a sealed fluid that is about to leak from the inner periphery to the outer periphery of the moving surface, and the rotary side sealing element and the stationary side sealing element are provided outside the stuffing box,
- the stationary side sealing element with a built-in spring is attached to the seal cover fixed to the housing, the rotational side sealing element is attached to the collar directly attached to the rotating shaft, and the rotational side consisting of the rotational side sealing element and the collar is the outside of the machine
- a seal arranged so as to rotate in the atmosphere and acting as an axial movement force with respect to the axial projection area A1 of the sliding surface of the stationary side sealing element and the stationary side sealing element
- the balance ratio A2 / A1 of the axis direction of the projection area A2 for receiving the body pressure is set to 1 or less, it is characterized by providing
- the sealed fluid is a high-temperature fluid
- no flushing and no-cooler can be achieved, and the flushing pipe, the cooler, the cooling water piping for the cooler, and the like are not required, so that the initial cost of the mechanical seal itself can be reduced.
- the total initial cost can be significantly reduced by downsizing.
- the cooling water for the cooler is no longer necessary, so that significant water saving can be achieved, and at the same time, maintenance of the cooler and flushing is not necessary.
- the pumping ring and the accompanying parts are not required, the stuffing box can be shortened, and the power of the pumping ring is not required, so that the running cost can be greatly reduced. Furthermore, since the rotating side sealing element and the stationary side sealing element are attached to the outside of the stuffing box, sliding heat generation is likely to be dissipated, and the capacity of the cooling jacket provided in the stuffing box can be increased. Furthermore, since the rotation side is arranged to rotate in the outside atmosphere, forced air cooling can be performed by the atmosphere. Further, since the sleeveless cartridge is an outside / stationary / balanced type, the seal size can be reduced by the thickness of the sleeve, the peripheral speed of the sliding surface can be reduced, and the load on the sliding surface can be reduced.
- the mechanical seal of the present invention is, secondly, in the first feature, the cooling jacket has a cooling water accommodation space communicating with a cooling water supply / drain hole provided in the stuffing box in the central portion, Each of which is hermetically mounted on the inner periphery of the housing via an O-ring, and the clearance ⁇ between the outer periphery of the cooling jacket and the inner periphery of the housing is set larger than the clearance ⁇ between the outer periphery of the rotating shaft and the inner periphery of the cooling jacket. .
- the cooling effect by the cooling jacket can be maximized by narrowing the gap between the outer periphery of the rotating shaft and the inner circumference of the cooling jacket and minimizing the volume of the sealing fluid interposed in the gap. . Even if the rotating shaft swings and the outer periphery of the rotating shaft comes into contact with the inner periphery of the cooling jacket, the shock is absorbed by the cushioning action of the O-ring, so that the contact surface pressure can be reduced and galling caused by contact sliding. In addition, it is possible to prevent wear of the two and to maintain the initial gap over a long period of time and to increase the cooling effect of the cooling jacket.
- the mechanical seal of the present invention is characterized in that, in the second feature, a plurality of fins are provided inside the cooling water storage space near the outer peripheral side of the rotating shaft. According to the third feature, the heat transfer area can be increased, and the axial length of the cooling jacket can be reduced.
- the mechanical seal of the present invention is, fourthly, in any of the first to third features, air or nitrogen gas is not present outside the sliding portion between the rotating side sealing element and the stationary side sealing element.
- a quenching hole for supplying the active gas is provided in the seal cover. According to the fourth feature, the sliding surface can be directly cooled, and the cooling effect can be enhanced.
- a lip seal made of a fluororesin is mounted between the rotary side sealing element and the collar, and a seal portion of the lip seal is provided. Is characterized in that it is slid in contact with the diaphragm surface on the inner periphery of the seal cover. According to the fifth feature, it is possible to prevent a danger due to the scattering of the leaking liquid, and it is possible to prevent damage to the bearing because the leaking liquid does not splash to the bearing box side.
- the present invention has the following excellent effects. (1) It is an outside type that seals a sealed fluid that is about to leak from the inner periphery to the outer periphery of the sliding surface, and the rotary side sealing element and the stationary side sealing element are located outside the stuffing box.
- the stationary side sealing element with a built-in spring is attached to a seal cover fixed to the housing, the rotary side sealing element is attached to a collar directly attached to the rotary shaft, and the rotary side sealing element and the collar are formed.
- a shaft that is arranged so that the rotating side rotates in the atmosphere outside the machine, and that receives the projected fluid area A1 in the axial direction of the sliding surface of the stationary sealing element and the sealing fluid pressure that acts as a moving force in the axial direction with respect to the stationary sealing element
- the mechanical seal itself can be reduced, but also the total initial cost due to downsizing. Significant reduction is possible. In addition, it is possible to prevent a decrease in the thermal efficiency of the entire system due to the cooled liquid entering the piping system. In addition, the cooling water for the cooler is no longer necessary, so that significant water saving can be achieved, and at the same time, maintenance of the cooler and flushing is not necessary. Furthermore, the pumping ring and the accompanying parts are not required, the stuffing box can be shortened, and the power of the pumping ring is not required, so that the running cost can be greatly reduced. Furthermore, sliding heat generation is likely to be dissipated, and the rotating side is forcibly air-cooled by the atmosphere. Further, the seal size can be reduced by the thickness of the sleeve, the peripheral speed of the sliding surface is reduced, and the load on the sliding surface can be reduced.
- the cooling jacket has a cooling water storage space communicating with the cooling water supply / drain hole provided in the stuffing box in the center, and is fitted to the inner periphery of the housing through O-rings on both outer circumferences.
- the clearance between the outer periphery of the cooling jacket and the inner periphery of the housing is set to be larger than the clearance between the outer periphery of the rotating shaft and the inner periphery of the cooling jacket, thereby narrowing the clearance between the outer periphery of the rotating shaft and the inner periphery of the cooling jacket to a minimum.
- the sliding surface is provided. It can be cooled directly and the cooling effect can be enhanced.
- a lip seal made of fluororesin is installed between the rotary side sealing element and the collar, and the seal part of the lip seal is slid in contact with the throttle surface on the inner periphery of the seal cover, thereby The risk of splashing can be prevented, and since the leaked liquid does not splash on the bearing box side, bearing damage can be prevented.
- FIG. 1 It is a front sectional view showing the whole mechanical seal concerning an embodiment of the invention. It is a principal part enlarged view which expands and shows the principal part of FIG. It is front sectional drawing which shows the prior art 1.
- FIG. 1 It is a front sectional view showing the whole mechanical seal concerning an embodiment of the invention. It is a principal part enlarged view which expands and shows the principal part of FIG. It is front sectional drawing which shows the prior art 1.
- FIG. 1 is a front cross-sectional view showing an entire mechanical seal according to an embodiment of the present invention
- FIG. 2 is an enlarged view of a main part obtained by enlarging the main part of FIG.
- the mechanical seal 1 includes a housing 2 for a shaft seal in a hot water pump and a hot oil pump such as a boiler feed water pump and a condensate pump of a thermal power plant, and a pump for handling a high temperature liquid exceeding 200 ° C.
- the mechanical seal 1 is mounted in a cartridge type between the housing 2 and the rotary shaft 3 for sealing between the rotary shafts 3 fitted in the shaft fitting holes 10.
- the left side is the aircraft inner side
- the right side is the aircraft outer side (atmosphere side).
- a rotation shaft 3 is provided through the shaft fitting hole 10 of the housing 2.
- a seal cover 5 is attached to the side surface 4 on the outside of the machine 2 around the shaft fitting hole 10 by means of fixing means such as bolts 6, and the space inside the seal cover 5 and outside the rotary shaft 3 is mechanically attached.
- a stationary side sealing element (hereinafter referred to as “seal ring”) 7 and a rotary side sealing element (hereinafter referred to as “mating ring”) 8 constituting the seal 1 are arranged.
- a stuffing box 9 having an enlarged diameter is formed near the outside of the shaft fitting hole 10 of the housing 2, and a cooling jacket 11 described later is disposed in the stuffing box 9.
- the mating ring 8 and the seal ring 7 are provided outside the stuffing box 9, that is, outside the machine. For this reason, the capacity
- the mechanical seal 1 is formed in an outside shape that seals the sealed fluid 12 that is about to leak from the inner periphery to the outer periphery of the sliding surface S between the seal ring 7 and the mating ring 8.
- the seal cover 5 has an annular shape so as to surround the rotary shaft 3, and an axial hole is formed in the seal cover 5.
- the inner peripheral surface forming the hole of the seal cover 5 has a fitting surface 5C, a space (hereinafter referred to as “annular groove”) 5G, and an aperture in order from the inner side to the outer side.
- Surface 5F is formed.
- the annular groove 5G is formed between the fitting surface 5C and the diaphragm surface 5F so as to have a larger diameter than the outer diameter of the fitting surface 5C. Further, the axial width of the annular groove 5G is made large so that most of the seal ring 7 and the mating ring 8 are present in the inner periphery of the annular groove 5G. Further, the diaphragm surface 5F is formed on the inner periphery of the front surface (near the machine exterior) of the seal cover 5 in order to increase the axial width of the annular groove 5G. Further, a positioning portion 5T is provided on the front surface of the seal cover 5 so as to surround the hole. This positioning portion 5T is formed with a convex end in the axial direction in order to provide a positioning groove 5B on the outer periphery.
- the moving surface 7D of the seal ring 7 is fitted to the fitting surface 5C of the seal cover 5 so as to be movable in the axial direction.
- the moving surface 7D of the seal ring 7 is formed with a first seal groove 7B for O-ring that seals between the fitting surface 5C.
- this 1st seal groove 7B in order to make an adhesion
- an O-ring 13A is attached to the first seal groove 7B.
- the material of the O-ring 13A is fluorine rubber, nitrile rubber, H-NBR, EPDM, perfluoroelastomer, or the like.
- the seal ring 7 forms a sliding seal surface 7A on the end surface opposite to the first seal groove 7B. Further, the outer peripheral side of the seal ring 7 forms a flange 7F. A guide groove 7G is formed in the flange 7F. Further, a fixing pin 14 is press-fitted and attached to a fitting hole provided in a side surface of the annular groove 5G of the seal cover 5. The guide groove 7G is movably fitted to the fixed pin 14, and the seal ring 7 is moved in the axial direction by the fixed pin 14, but is locked in the rotational direction. Further, as shown in FIG. 1, the seal cover 5 facing the flange 7F is provided with a plurality of hole-shaped spring seats 5H arranged in the circumferential direction. Coil springs 15 provided at equal intervals along the peripheral surface are seated on the spring seat 5H and elastically press the seal ring 7.
- the seal ring 7 is an axial projection that receives an axial projection area A1 of the sliding seal surface 7A of the seal ring 7 and a seal fluid pressure (sealed fluid pressure) that acts as an axial moving force on the seal ring 7.
- a balance ratio A2 / A1 with the area A2 is formed in a balance type set to 1 or less, and the load on the sliding surface S due to the seal fluid pressure is reduced.
- the seal ring 7 is made of SiC by a special conversion method (partially converting the carbon surface to SiC, reinforcing the surface strength, and combining both the wear resistance of SiC and the self-lubricating property of carbon). Yes. It may also be made of diamond-coated SiC.
- the seal cover 5 is provided with a plurality of quenching holes 16 extending in the circumferential direction from the outer peripheral surface 5A into the annular groove 5G.
- a quenching fluid V made of an inert gas such as a gas is supplied, and the drain is discharged from the quenching hole 16 located immediately below.
- FIG. 1 shows a state in which the quenching fluid V is supplied from the quenching hole 16 located directly below, but in actuality, the quenching fluid V is supplied from the horizontal quenching hole 16. Then, the supplied quenching fluid V is directly injected into the outer peripheral side of the sliding surface S between the seal ring 7 and the mating ring 8 from the quenching hole 16.
- the supplied quenching fluid V is circulated in the annular groove 5G and then discharged through the quenching hole 16 directly below. At that time, the heat generated when the sliding surface S slides is cooled, and impurities adhering to the seal ring 7 and the mating ring 8 are cleaned.
- an air vent 18 for removing a gas component of the sealed fluid 12 is provided directly above the circumferential direction of the seal cover 5. The air vent 18 communicates with the sealed fluid 12 through a communication hole (not shown) provided in the seal cover 5.
- the collar 20 is provided with a fitting peripheral surface 20C and a second seal groove 20B on the inner periphery.
- the fitting peripheral surface 20C is fitted to the outer peripheral surface 3A of the rotating shaft 3, and the fitting surfaces of both components are sealed by the O-ring 13C fitted to the second seal groove 20B.
- the tip end portion of the set screw 21 screwed into the collar 20 is fixed to the outer peripheral surface 3 ⁇ / b> A of the rotating shaft 3 to fix the collar 20 to the rotating shaft 3.
- an outer periphery inside the mating ring 8 in the collar 20 is formed on the coupling surface 20D.
- a holding surface 20S is provided on the annular stepped surface provided on the outer peripheral side from the coupling surface 20D.
- the drive pin 22 is press-fitted into the fitting hole provided in the holding surface 20S of the collar 20 and attached.
- the seal size can be reduced by the thickness of the sleeve, the sliding surface peripheral speed can be reduced, and the sliding surface load can be reduced.
- a sliding seal surface 8A is formed at one end of the mating ring 8 as shown in FIG.
- the sliding seal surface 8A is formed so as to be able to slide in close contact with the sliding seal surface 7A of the seal ring 7.
- a sealing surface 8D is provided on the outer periphery of the mating ring 8.
- the sealing surface 8D is fitted with a gap C close to the diaphragm surface 5F of the positioning portion 5T.
- the sealing surface 8D and the throttle surface 5F are closely fitted to block the quenching fluid V supplied from the quenching hole 16 by the effect of the gap C.
- a stepped surface 8B for sealing is formed on the inner peripheral surface 8C of the mating ring 8.
- An O-ring 13B is attached to the stepped surface 8B to seal between the fitting surfaces of the inner peripheral surface 8C of the mating ring 8 and the coupling surface 20D of the collar 20. Further, a pin recess 8G is formed on the joining surface 8E at the end of the mating ring 8 on the outside of the machine. The drive pin 22 screwed into the fitting hole of the collar 20 is inserted into the pin recess 8G, and the parts of the mating ring 8 and the collar 20 are locked to each other so as not to move in the circumferential direction. Then, the rotational force of the collar 20 is transmitted to the mating ring 8 by the drive pin 22.
- the rotating side including the mating ring 8 and the collar 20 is arranged so as to rotate in the outside atmosphere. For this reason, the rotating side is forcibly air-cooled by the atmosphere. Further, since the rotation side portion in contact with the sealing fluid is only the sealing fluid side end surface of the mating ring 8 and the collar 20, the contact area with the sealing fluid is small, and heat generation due to rotational friction in high speed rotation is small.
- the mating ring 8 is manufactured from a material such as SiC by a special conversion method, or ceramics such as SiC or a cemented carbide by another manufacturing method. It may also be made of diamond-coated SiC. At least one member of the seal ring 7 or mating ring 8 is made of SiC by special conversion method so as to have lubricity and wear resistance, thereby preventing the change of the sliding surface state during long-term operation. Yes.
- the width of the sliding surface S between the mating ring 8 and the seal ring 7 is set to 1.5 mm or less, and the balance ratio A2 / A1 is set to 0.7 or less. Is good. In the range where the diameter of the rotating shaft 3 exceeds 100 mm and is 200 mm or less, the width of the sliding surface S between the mating ring 8 and the seal ring 7 is 2.0 mm or less, and the balance ratio A2 / A1 is 0.7. The following should be set. For this reason, the hydraulic pressure working area is minimized, and the pressing force due to the fluid pressure is minimized, so the heat generation is designed to be minimized.
- the gap between the inner periphery of the seal ring 7 and the outer periphery of the rotating shaft 3A is 2.5 mm or more regardless of the diameter of the rotating shaft 3 described above. In this way, the clearance between the inner periphery of the seal ring 7 and the outer periphery of the rotary shaft 3A is made large so that the seal fluid flows, thereby preventing heat accumulation near the sliding surface due to sliding heat generation and increasing the temperature. Can be minimized.
- the lip seal 23 that blocks the gap C between the throttle surface 5F and the sealing surface 8D is formed of PTFE material as shown in FIG. That is, the lip seal 23 is formed in a ring shape and forms a mounting portion 23B in a vertical portion on the inner peripheral side having a substantially L-shaped cross section, and a seal portion 23A in a substantially horizontal portion on the outer peripheral side.
- the attachment portion 23B is pressure-bonded between each surface of the joining surface 8E of the mating ring 8 and the holding surface 20S of the collar 20.
- the horizontal portion 23A is opened 90 degrees or more with respect to the vertical portion 23B, and the seal portion 23A is in close contact with the diaphragm surface 5F due to its elasticity when mounted.
- the pressure of the quenching fluid V in the annular groove 5G can be increased.
- the pressure of the quenching fluid V increases, impurities that are to adhere to the sliding surface of the O-ring 13A can be pushed back to exert a cleaning effect.
- the sliding seal surface 7A of the seal ring 7 makes an excellent response to the sliding seal surface 8A of the mating ring 8 in the axial direction. Further, since the leaked liquid does not scatter to the bearing box side, it is possible to prevent the bearing from being damaged and to prevent the danger caused by the leaked liquid.
- the gasket 24 is provided between the seal cover 5 and the housing 2 to seal between the housing 2 and the seal cover 5.
- the gasket 24 is made of a material such as rubber, resin, or metal coated with rubber.
- the annular groove 5G of the seal cover 5 is preferably formed in a large dimension in the axial direction so as to cover most of the seal ring 7 and the mating ring 8.
- the side surface on the machine inner side of the annular groove 5G is formed so as to be close to the first seal groove 7B of the seal ring 7.
- the side surface of the mating ring 8 of the annular groove 5G reaches the middle of the mating ring 8.
- the quenching fluid V supplied from the quenching passage 16 can be directly supplied to the outer diameter surface of the sliding surface S.
- the width of the annular groove 5G is large so as to cover the outer periphery of the seal ring 7 and the mating ring 8, the sliding surface S between the seal ring 7 and the mating ring 8 generates heat due to friction. However, it is cooled by the quenching fluid V flowing through the annular groove 5G, and is purified to exhibit its effect.
- the seal cover 5 and the collar 20 are assembled at the same time as positioning by fitting the convex portion 27 of the set plate 25 attached to the collar 20 via a bolt 26 into the positioning groove 5 ⁇ / b> B of the seal cover 5. . Then, when the mating ring 8 is positioned, the set screw 21 is screwed onto the rotary shaft 3 and stopped, and the collar 20 is fixed to the rotary shaft 3.
- the set plate 25 is formed in a cross-sectional shape as shown in FIG. 1, and is mounted on the peripheral surface of the collar 20 in a three-dimensional arrangement. The set plate 25 may be removed after assembly.
- a ring-shaped cooling jacket 11 is provided between the inner periphery of the housing 2 and the outer periphery of the rotary shaft 3 in the stuffing box 9 formed near the outside of the shaft fitting hole 10 of the housing 2.
- the cooling jacket 11 has a cooling water accommodation space 30 that communicates with a cooling water supply hole 28 provided immediately below the circumferential position of the stuffing box 9 and a cooling water drain hole 29 provided immediately above the central portion.
- O-ring grooves 32 and 32 for mounting O-rings 31 and 31 respectively are provided on both outer circumferences. The thickness of the O-ring 31 is set larger than the depth of the O-ring groove 32.
- a plurality of fins 33 are provided inside the cooling water storage space 30 of the cooling jacket 11 near the outer periphery of the rotating shaft.
- the cooling jacket 11 is hermetically mounted on the inner periphery of the housing 2 via an O-ring 31, but is mounted with a gap ⁇ between the outer periphery of the cooling jacket 11 and the inner periphery of the housing 2.
- the clearance ⁇ between the outer periphery of the cooling jacket 11 and the inner periphery of the housing 2 is set larger than the clearance ⁇ between the outer periphery of the rotary shaft 3 and the inner periphery of the cooling jacket 11.
- the gap ⁇ between the outer periphery of the rotating shaft 3 and the inner periphery of the cooling jacket 11 is set to 0.1 to 0.2 mm.
- the cooling jacket 11 is provided in the stuffing box 9, the gap between the outer periphery of the rotary shaft 3 and the inner circumference of the cooling jacket 11 is minimized, and the volume of the sealing fluid interposed in the gap is minimized.
- the cooling effect by the cooling jacket 11 can be maximized.
- the water-cooling jacket conventionally provided in the housing 2 can be made unnecessary and can be made compact.
- the clearance ⁇ between the outer periphery of the cooling jacket 11 and the inner periphery of the housing 2 is set to be larger than the clearance ⁇ between the outer periphery of the rotation shaft 3 and the inner periphery of the cooling jacket 11, so that the rotation shaft 3 is swung and rotated by any chance.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Sealing (AREA)
Abstract
Description
(1)メカニカルシールを冷却するために、フラッシング配管、クーラーおよびクーラー用の多量の冷却水が必要である。
(2)ポンピングリングが必要であり、それに伴い取付けスペースおよび消費動力が増大する。ポンピングリングを装着すると、スタフィングボックス内周と軸の絞り部の長さが長くとれないので、スタフィングボックスに内蔵されている水冷ジャケットの冷却効果が不十分であった。
(3)メカニカルシールがインサイド・バランス形のシングルシールであるため、スリーブ外周に回転側密封要素を装着する必要があり、スリーブの肉厚分、メカニカルシールのサイズが大きくなる。メカニカルシールのサイズが大きくなると、摺動面の周速が速くなり、摺動面の負荷が高くなる。また、発熱部分である摺動面がスタフィングボックス内にあり、大気による空冷効果が期待できない。
(4)メカニカルシールのシール端面幅が2.5mmを越え、摺動発熱が大きいため、発熱除去のため、フラッシングが不可欠であり、フラッシング流量も多く必要なため、ポンピングリングの高い流量(Q)-揚程(H)性能が必要であった。
(5)メカニカルシールの冷却のため、水を摺動部Sの大気側(図3の場合、摺動部Sの内側)に供給してクエンチを行う場合があるが、高温によりクエンチ水が蒸発して水中のカルキが析出し、メカニカルシールが固着して漏洩することがあった。
しかし、従来技術2においても、メカニカルシールを冷却するために、フラッシング配管、クーラーおよびクーラー用の多量の冷却水が必要であるという問題があった。
さらにまた、回転側密封要素および静止側密封要素をスタフィングボックスの外に装着されるため摺動発熱が発散されやすく、また、スタフィングボックス内に設ける冷却ジャケットの容量を大きくすることができる。さらに、回転側が機外側雰囲気中で回転するように配置されるので、大気により強制空冷できる。
また、アウトサイド・静止・バランス形のスリーブレスカートリッジであるので、スリーブの肉厚分だけシールサイズを小さくすることができ、摺動面周速が小さくなり、摺動面負荷を小さくできる。
第3の特徴により、伝熱面積を大きくすることができ、冷却ジャケットの軸方向長さを小さくすることができる。
第4の特徴により、摺動面を直接冷却することができ、冷却効果を高めることができる。
第5の特徴により、漏洩液の飛散による危険を防止でき、また、漏洩液がベアリングボックス側に飛散しないので、ベアリングの損傷を防止できる。
(1)摺動面の内周から外周方向へ向かって漏れようとする被密封流体をシールするアウトサイド形であって、回転側密封要素および静止側密封要素をスタフィングボックスの外に位置するように設け、スプリングを内蔵する静止側密封要素をハウジングに固定されたシールカバーに装着し、回転側密封要素を回転軸に直接装着されたカラーに装着し、回転側密封要素およびカラー等からなる回転側が機外側雰囲気中で回転するように配置し、静止側密封要素の摺動面の軸方向の投影面積A1と静止側密封要素に対して軸方向の移動力として働くシール流体圧力を受ける軸方向の投影面積A2とのバランス比A2/A1を1以下に設定し、ハウジング内周と回転軸外周との間にリング状の冷却ジャケットを設けることにより、被密封流体が高温流体でも、ノーフラッシング、ノークーラー化が図れ、フラッシング配管、クーラー、クーラー用冷却水配管等が不要となるため、メカニカルシール自体のイニシャルコストの削減が図れるのみならず、小型化によるトータルイニシャルコストの大幅な削減が可能となる。併せて、冷却した液体が配管系内に入ることによる系全体の熱効率の低下を防止できる。また、クーラーの冷却水が不要となり、大幅な節水が図れ、同時に、クーラーやフラッシングのメンテナンスが不要となる。さらに、ポンピングリングおよび付帯部品が不要となり、スタフィングボックスを短くすることができ、また、ポンピングリングの動力が不要となるので、ランニングコストも大幅に削減することができる。さらにまた、摺動発熱が発散されやすく、また、回転側が大気により強制空冷される。また、スリーブの肉厚分だけシールサイズを小さくすることができ、摺動面周速が小さくなり、摺動面負荷を小さくできる。
(3)また、冷却水収容空間の回転軸外周側寄りの内部に複数のフィンを設けることにより、伝熱面積を大きくすることができ、冷却ジャケットの軸方向長さを小さくすることができる。
メカニカルシール1は、火力発電所のボイラー給水ポンプやコンデンセートポンプなどの熱水ポンプおよび熱油ポンプ等の200℃を越えるような高温液を扱うポンプ等における軸封部のハウジング2と該ハウジング2の軸嵌装孔10に嵌装される回転軸3の間をシールするためのものであり、メカニカルシール1はハウジング2と回転軸3間にカートリッジ型に装着される。
図1において、左側が機内側、右側が機外側(大気側)である。
また、ハウジング2の軸嵌装孔10の機外側寄りには拡径された形状のスタフイングボックス9が形成されており、該スタフイングボックス9内に後記する冷却ジャケット11が配置される。このように、メイティングリング8およびシールリング7はスタフィングボックス9の外、すなわち、機外側に位置して設けられる。このため、冷却ジャケット11の容量を十分に大きくすることができ、また、メイティングリング8とシールリング7との摺動面が大気側に位置するすることになり、摺動発熱がこもることがない。
シールカバー5は回転軸3を包囲するように環状をしており、その内部には軸方向の孔が形成される。このシールカバー5の孔を形成する内周面は、図2に示すように、機内側から機外側に向かって順に嵌合面5Cと空間部(以下、「環状溝」という。)5Gと絞り面5Fとを形成する。このうち、環状溝5Gは嵌合面5Cと絞り面5Fとの間で嵌合面5Cの外径より大径に形成する。また、環状溝5Gの内周にシールリング7とメイティングリング8の大部分が内在するように環状溝5Gの軸方向の幅寸法を大きく形成する。さらに、絞り面5Fは、環状溝5Gの軸方向の幅を大きくするために、シールカバー5の前面(機外側寄り)の内周に形成される。
また、シールカバー5の前面には、孔を囲んで位置決め部5Tを設ける。この位置決め部5Tは外周に位置決め溝5Bを設けるために軸方向端部を凸に形成する。
シールリング7は、特殊転換法(カーボン表面を部分的にSiC化し、表面強度を補強し、SiCの耐摩耗性とカーボンの自己潤滑性の両方を兼ね備えるようにすること)によるSiCから製作されている。また、ダイヤモンドコーティングしたSiCにより製作されてもよい。
なお、図1では、真下に位置するクエンチング孔16からクエンチング流体Vを供給している状態を示しているが、実際は水平に位置するクエンチング孔16から供給される。
そして、供給されたクエンチング流体Vは、クエンチング孔16から直接にシールリング7とメイティングリング8との摺動面Sの外周側に注入される。そして、この供給されたクエンチング流体Vは、環状溝5G内を循環してから真下のクエンチング孔16を介して排出される。その際、摺動面Sの摺動時の発熱を冷却すると共に、シールリング7およびメイティングリング8に付着している不純物を清浄にする。
また、シールカバ-5の円周方向真上に位置して被密封流体12の気体成分を抜くためのエアベント18が設けられている。このエアベント18は、シールカバー5に設けられる図示しない連通孔を介して被密封流体12と連通される。
また、メイティングリング8は、特殊転換法によるSiC、または他の製法によるSiCや超硬合金などのセラミックスなどの材質から製作される。また、ダイヤモンドコーティングしたSiCにより製作されてもよい。
シールリング7あるいはメイティングリング8の少なくとも一方の部材を特殊転換法によるSiCとして潤滑性と耐摩耗性を持たせておくことにより、長期間の運転での摺動面状態の変化を防止している。
また、回転軸3の直径が100mmを越え200mm以下の範囲においては、メイティングリング8とシールリング7との摺動面Sの幅を2.0mm以下とし、バランス比A2/A1を0.7以下に設定するのがよい。このため、液圧作用面積が最小限に抑えられ、流体圧力による押付力が最小限となるので発熱も最小限に抑えられた低発熱設計となっている。
さらに、回転軸3の直径が上記の何れの場合でも、シールリング7の内周と回転軸外周3Aとの隙間を2.5mm以上とするのが望ましい。このように、シールリング7の内周と回転軸外周3Aとの隙間を大きくとり、シール流体が流動するようにすることで、摺動発熱による摺動面近傍の蓄熱を防止し、温度上昇を最小限に抑えることができる。
2 ハウジング
3 回転軸
4 ハウジングの機外側の側面
5 シールカバー
6 ボルト
7 静止側密封要素(シールリング)
8 回転側密封要素(メイティングリング)
9 スタフイングボックス
10 軸嵌装孔
11 冷却ジャケット
12 被密封流体
13 Oリング
14 固定ピン
15 コイルスプリング
16 クエンチング孔
18 エアベント
20 カラー
21 セットスクリュー
22 ドライブピン
23 リップシール
24 ガスケット
25 セットプレート
26 ボルト
27 凸部
28 冷却水給水孔
29 冷却水排水孔
30 冷却水収容空間
31 Oリング
32 Oリング溝
33 フィン
Claims (5)
- ハウジングと回転軸との間に形成した軸封部に装着されて、ハウジングと回転軸との間をシールするメカニカルシールにおいて、摺動面の内周から外周方向へ向かって漏れようとする被密封流体をシールするアウトサイド形であって、回転側密封要素および静止側密封要素をスタフィングボックスの外に位置するように設け、スプリングを内蔵する静止側密封要素をハウジングに固定されたシールカバーに装着し、回転側密封要素を回転軸に直接装着されたカラーに装着し、回転側密封要素およびカラー等からなる回転側が機外側雰囲気中で回転するように配置し、静止側密封要素の摺動面の軸方向の投影面積A1と静止側密封要素に対して軸方向の移動力として働くシール流体圧力を受ける軸方向の投影面積A2とのバランス比A2/A1を1以下に設定し、ハウジング内周と回転軸外周との間にリング状の冷却ジャケットを設けることを特徴とするメカニカルシール。
- 冷却ジャケットは、スタフィングボックスに設けられた冷却水給排水孔と連通する冷却水収容空間を中央部に有し、両側外周にそれぞれOリングを介してハウジング内周に密封的に装着され、冷却ジャケット外周とハウジング内周との隙間αを回転軸外周と冷却ジャケット内周との隙間βより大きく設定することを特徴とする請求項1記載のメカニカルシール。
- 冷却水収容空間の回転軸外周側寄りの内部に複数のフィンを設けることを特徴とする請求項2記載のメカニカルシール。
- 回転側密封要素と静止側密封要素との摺動部の機外側に空気あるいは窒素ガスなどの不活性ガスを供給するためのクエンチング孔をシールカバーに設けることを特徴とする請求項1ないし3のいずれか1項に記載のメカニカルシール。
- フッ素樹脂からなるリップシールを回転側密封要素とカラーとの間に装着し、リップシールのシール部をシールカバー内周の絞り面に接触摺動させるようにしたことを特徴とする請求項1ないし4のいずれか1項に記載のメカニカルシール。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010546757A JP5557752B2 (ja) | 2009-09-24 | 2010-05-19 | メカニカルシール |
CN201080002226.5A CN102112785B (zh) | 2009-09-24 | 2010-05-19 | 机械密封件 |
EP10818594.3A EP2481960B1 (en) | 2009-09-24 | 2010-05-19 | Mechanical seal |
US13/124,106 US9388905B2 (en) | 2009-09-24 | 2010-05-19 | Mechanical seal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009218361 | 2009-09-24 | ||
JP2009-218361 | 2009-09-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011036917A1 true WO2011036917A1 (ja) | 2011-03-31 |
Family
ID=43795681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/058419 WO2011036917A1 (ja) | 2009-09-24 | 2010-05-19 | メカニカルシール |
Country Status (5)
Country | Link |
---|---|
US (1) | US9388905B2 (ja) |
EP (1) | EP2481960B1 (ja) |
JP (1) | JP5557752B2 (ja) |
CN (1) | CN102112785B (ja) |
WO (1) | WO2011036917A1 (ja) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102678932A (zh) * | 2012-04-27 | 2012-09-19 | 大连华阳光大密封有限公司 | 一种不带辅助系统的双端面机械密封 |
JP2013249888A (ja) * | 2012-05-31 | 2013-12-12 | Torishima Pump Mfg Co Ltd | メカニカルシール |
WO2013187322A1 (ja) * | 2012-06-13 | 2013-12-19 | イーグル工業株式会社 | 高温密封流体をシールする故障予知型メカニカルシールシステム |
JP2016166616A (ja) * | 2015-03-09 | 2016-09-15 | 日本ピラー工業株式会社 | ロータリジョイント |
JP2016166645A (ja) * | 2015-03-09 | 2016-09-15 | 日本ピラー工業株式会社 | 多流路形ロータリジョイント |
WO2016143480A1 (ja) * | 2015-03-09 | 2016-09-15 | 日本ピラー工業株式会社 | 多流路形ロータリジョイント |
JP2016166619A (ja) * | 2015-03-09 | 2016-09-15 | 日本ピラー工業株式会社 | 多流路形ロータリジョイント |
JP2016217256A (ja) * | 2015-05-20 | 2016-12-22 | 株式会社浪速ポンプ製作所 | ポンプ、及びポンプ用メカニカルシール装置 |
JPWO2014123233A1 (ja) * | 2013-02-07 | 2017-02-02 | 株式会社タンケンシールセーコウ | メカニカルシールおよびその製造方法 |
WO2018003258A1 (ja) * | 2016-07-01 | 2018-01-04 | 日本ピラー工業株式会社 | メカニカルシール |
JP2018009631A (ja) * | 2016-07-13 | 2018-01-18 | 日本ピラー工業株式会社 | メカニカルシール |
JP2018063009A (ja) * | 2016-10-13 | 2018-04-19 | イーグル工業株式会社 | メカニカルシール |
JP2018071702A (ja) * | 2016-10-31 | 2018-05-10 | イーグル工業株式会社 | 冷凍機コンプレッサの軸封装置 |
WO2018123617A1 (ja) * | 2016-12-27 | 2018-07-05 | イーグル工業株式会社 | メカニカルシール |
JP2018194148A (ja) * | 2017-05-22 | 2018-12-06 | 日本ピラー工業株式会社 | 軸封装置 |
JP2018200059A (ja) * | 2017-05-25 | 2018-12-20 | イーグルブルグマンジャパン株式会社 | 固定機構及びメカニカルシール |
JP2021188527A (ja) * | 2020-05-26 | 2021-12-13 | 株式会社荏原製作所 | ポンプ装置 |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013015835A1 (en) | 2011-07-22 | 2013-01-31 | Seven Networks, Inc. | Mobile application traffic optimization |
CN102734250A (zh) * | 2011-04-11 | 2012-10-17 | 上海宝钢化工有限公司 | 一种液压油缸 |
DE102011122477A1 (de) * | 2011-12-21 | 2013-06-27 | Kaco Gmbh + Co. Kg | Gleitringdichtung |
FR2991736A1 (fr) | 2012-06-06 | 2013-12-13 | Alstom Technology Ltd | Dispositif d'etancheite d'une pompe |
TWI494509B (zh) * | 2013-02-08 | 2015-08-01 | Sunny King Machinery Co Ltd | Mechanical shaft seal |
US10253886B2 (en) * | 2013-02-12 | 2019-04-09 | Framo Engineering As | High temperature subsea dynamic seals |
CN103206413B (zh) * | 2013-04-12 | 2015-09-16 | 上海阿波罗机械股份有限公司 | 一种用于主给水泵的机械密封 |
EP3070379B1 (en) * | 2013-11-12 | 2019-07-31 | Eagle Industry Co., Ltd. | Mechanical seal |
US9709172B2 (en) | 2013-12-02 | 2017-07-18 | Farrel Corporation | Rotor shaft seal assembly |
DE102013227208A1 (de) * | 2013-12-30 | 2015-07-02 | Siemens Aktiengesellschaft | Dichtsystem für eine Dampfturbine sowie Dampfturbine |
CN105940225B (zh) * | 2014-02-19 | 2019-02-22 | 苏尔寿管理有限公司 | 回转机械和用于回转机械中的热交换的方法 |
US9395000B2 (en) * | 2014-08-19 | 2016-07-19 | Flowserve Management Company | Apparatus for excluding particle contaminants from a gas lift off mechanical seal |
US10352454B2 (en) * | 2014-11-04 | 2019-07-16 | Eagle Industry Co., Ltd. | Mechanical seal device |
CN107076307B (zh) | 2014-11-04 | 2019-06-21 | 伊格尔工业股份有限公司 | 机械密封装置 |
JP6422378B2 (ja) * | 2015-03-09 | 2018-11-14 | 日本ピラー工業株式会社 | 端面接触形メカニカルシール |
CN105179300A (zh) * | 2015-09-10 | 2015-12-23 | 临涣中利发电有限公司 | 一种凝泵轴封装置 |
US10612665B2 (en) * | 2015-11-09 | 2020-04-07 | Eagle Industry Co., Ltd. | Mechanical seal |
US10274085B2 (en) * | 2016-06-28 | 2019-04-30 | Flowserve Management Company | Dry running end face mechanical seal |
JP6356752B2 (ja) * | 2016-09-08 | 2018-07-11 | 日本ピラー工業株式会社 | メカニカルシール |
DE102017202038B4 (de) * | 2017-02-09 | 2022-05-05 | Eagleburgmann Germany Gmbh & Co. Kg | Gleitringdichtungsanordnung mit Sicherheitsdichtung |
DE102017109663A1 (de) * | 2017-05-05 | 2018-11-08 | Man Diesel & Turbo Se | Dichtungssystem, Strömungsmaschine mit einem Dichtungssystem und Verfahren zum Reinigen desselben |
CN107289134B (zh) * | 2017-07-18 | 2018-08-31 | 北京航空航天大学 | 一种机械密封预紧力调整装置 |
CN107701501A (zh) * | 2017-09-25 | 2018-02-16 | 襄阳五二五泵业有限公司 | 一种具有磨损间隙补偿的泵轴密封结构 |
JP6404521B1 (ja) * | 2018-06-13 | 2018-10-10 | 日本ピラー工業株式会社 | メカニカルシール |
JP6427295B1 (ja) * | 2018-09-12 | 2018-11-21 | 日本ピラー工業株式会社 | メカニカルシール |
DE102019203454B3 (de) * | 2019-03-14 | 2020-07-09 | Eagleburgmann Germany Gmbh & Co. Kg | Marine-Gleitringdichtungsanordnung |
CN110043477B (zh) * | 2019-05-23 | 2023-11-07 | 高邮环流泵业有限公司 | 轴流泵 |
JP7565690B2 (ja) * | 2020-02-07 | 2024-10-11 | 三菱重工コンプレッサ株式会社 | 圧縮機の製造方法及び圧縮機 |
CN111250452A (zh) * | 2020-03-24 | 2020-06-09 | 青岛航保机电设备有限公司 | 一种多场所适用机械密封装置 |
JP2022060818A (ja) * | 2020-10-05 | 2022-04-15 | 株式会社東芝 | 水力機械の主軸封水装置および水力機械 |
US11459956B2 (en) * | 2020-11-25 | 2022-10-04 | Raytheon Technologies Corporation | Face seal arrangement with reduced balance ratio |
US11746908B2 (en) * | 2021-09-20 | 2023-09-05 | Flowserve Pte. Ltd. | Rotating shaft seal having an easily installed and easily removed internal cooling channel |
CN114542327B (zh) * | 2022-01-25 | 2023-06-30 | 大连双龙泵业集团有限公司 | 一种液氧泵用机械密封装置 |
CN114718902B (zh) * | 2022-04-26 | 2024-01-12 | 昆明理工大学 | 一种轴密封腔内轴流压气增压的叶轮组件及干气密封结构 |
KR102604915B1 (ko) * | 2022-12-23 | 2023-11-23 | 주식회사 멀티스하이드로 | 교반기용 더블 메카니칼 씰 유니트 |
US12031631B1 (en) | 2023-02-01 | 2024-07-09 | Caterpillar Inc. | Dynamically vented crankshaft seal and systems and methods thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002098237A (ja) | 2000-09-21 | 2002-04-05 | Eagle Ind Co Ltd | 軸封装置 |
JP2006022378A (ja) | 2004-07-08 | 2006-01-26 | Hitachi Zosen Corp | 水電解装置 |
WO2006022378A1 (ja) * | 2004-08-26 | 2006-03-02 | Eagle Industry Co., Ltd. | メカニカルシール装置 |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2252526A (en) * | 1939-05-06 | 1941-08-12 | Frick Co | Outside type seal |
US3026112A (en) * | 1958-11-10 | 1962-03-20 | Garlock Inc | Slide ring seal |
US3155393A (en) * | 1962-12-19 | 1964-11-03 | Durametallic Corp | Sealed quench collar |
US3467396A (en) * | 1967-05-10 | 1969-09-16 | Durametallic Corp | Internally cooled seal assembly |
US3477729A (en) * | 1967-05-19 | 1969-11-11 | Durametallic Corp | Cooling system for a stuffing box seal |
US3447809A (en) * | 1967-06-07 | 1969-06-03 | Borg Warner | Mechanical seal assembly |
US3951417A (en) * | 1973-10-03 | 1976-04-20 | Vitaly Petrovich Chernykh | Rotary shaft end seal for apparatus operating under pressure |
US3970320A (en) * | 1975-04-28 | 1976-07-20 | Borg-Warner Corporation | Mechanical seal with thermo-cooling |
US4109920A (en) * | 1977-09-06 | 1978-08-29 | Borg-Warner Corporation | Heat exchanger for shaft seal cartridge |
US4332391A (en) * | 1980-04-16 | 1982-06-01 | Arnold William A | Universal mechanical seal gland |
US4377290A (en) * | 1982-03-22 | 1983-03-22 | John Crane-Houdaille, Inc. | Symmetrical seal package for multiple face seals |
GB2123098B (en) * | 1982-07-01 | 1985-12-18 | Aes Eng Ltd | Mechanical shaft seals |
EP0131286B1 (en) * | 1983-07-08 | 1988-11-30 | Tanken Seiko Corporation | Mechanical seal for sealing slurry liquid |
US5188377A (en) * | 1989-12-05 | 1993-02-23 | Nuraseal Company, Limited | Externally-mounted, stationary-design, self-aligning rotary face seal |
US5199720A (en) * | 1990-05-25 | 1993-04-06 | John Crane, Inc. | Split mechanical face seal |
US5125792A (en) * | 1990-09-14 | 1992-06-30 | Itt Corporation | Pump stuffing box with heat exchange device |
US5213340A (en) * | 1990-11-28 | 1993-05-25 | Aw Chesterton Company | Balanced mechanical seal |
GB9121565D0 (en) * | 1991-10-10 | 1991-11-27 | Aes Eng Ltd | Mechanical seals |
CN2141488Y (zh) * | 1992-09-22 | 1993-09-01 | 杭州碱泵厂 | 一种内装式强制冷却机械密封 |
US5577738A (en) * | 1994-04-29 | 1996-11-26 | Fukuda; Michihito | Outside type mechanical seal device |
CN2229579Y (zh) * | 1995-06-11 | 1996-06-19 | 陈晓云 | 内装式强制快速冷却机械密封 |
US6485024B1 (en) * | 2000-09-06 | 2002-11-26 | Utex Industries, Inc. | Split mechanical face seal |
US6379127B1 (en) * | 2000-09-29 | 2002-04-30 | Lawrence Pumps, Inc. | Submersible motor with shaft seals |
FR2827919B1 (fr) * | 2001-07-26 | 2004-03-05 | Thermodyn | Garniture d'etancheite pour compresseur et compresseur centrifuge pourvu d'une telle garniture |
JP4111698B2 (ja) * | 2001-08-31 | 2008-07-02 | イーグル工業株式会社 | メカニカルシール装置 |
JP2003074714A (ja) * | 2001-08-31 | 2003-03-12 | Eagle Ind Co Ltd | メカニカルシール装置 |
US6779965B2 (en) * | 2002-04-26 | 2004-08-24 | Schlumberger Technology Corporation | Integrated axial flow pump |
SE524513C2 (sv) * | 2002-12-20 | 2004-08-17 | Metso Paper Inc | Tätningsanordning för tätning mellan en axeltapp och ett lagerhus samt anordning för avvattning och/eller tvättning av materialsuspensioner |
US6935632B2 (en) * | 2003-02-28 | 2005-08-30 | A. W. Chesterton Company | Automatically disengaging spacing mechanism for a mechanical seal |
FI117108B (fi) * | 2004-02-10 | 2006-06-15 | Crane John Safematic Oy | Sovitelma mekaanisen akselitiivisteen yhteydessä |
US7857319B2 (en) * | 2006-06-08 | 2010-12-28 | John Crane Inc. | Mechanical seal with banded ring |
US20090194949A1 (en) * | 2008-02-04 | 2009-08-06 | Tamar Technological Development Ltd. | Shaft for viscous sealant systems |
-
2010
- 2010-05-19 WO PCT/JP2010/058419 patent/WO2011036917A1/ja active Application Filing
- 2010-05-19 EP EP10818594.3A patent/EP2481960B1/en active Active
- 2010-05-19 CN CN201080002226.5A patent/CN102112785B/zh active Active
- 2010-05-19 US US13/124,106 patent/US9388905B2/en active Active
- 2010-05-19 JP JP2010546757A patent/JP5557752B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002098237A (ja) | 2000-09-21 | 2002-04-05 | Eagle Ind Co Ltd | 軸封装置 |
JP2006022378A (ja) | 2004-07-08 | 2006-01-26 | Hitachi Zosen Corp | 水電解装置 |
WO2006022378A1 (ja) * | 2004-08-26 | 2006-03-02 | Eagle Industry Co., Ltd. | メカニカルシール装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2481960A4 * |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102678932B (zh) * | 2012-04-27 | 2014-09-24 | 大连华阳密封股份有限公司 | 一种不带辅助系统的双端面机械密封 |
CN102678932A (zh) * | 2012-04-27 | 2012-09-19 | 大连华阳光大密封有限公司 | 一种不带辅助系统的双端面机械密封 |
JP2013249888A (ja) * | 2012-05-31 | 2013-12-12 | Torishima Pump Mfg Co Ltd | メカニカルシール |
WO2013187322A1 (ja) * | 2012-06-13 | 2013-12-19 | イーグル工業株式会社 | 高温密封流体をシールする故障予知型メカニカルシールシステム |
JPWO2013187322A1 (ja) * | 2012-06-13 | 2016-02-04 | イーグル工業株式会社 | 高温密封流体をシールする故障予知型メカニカルシールシステム |
JPWO2014123233A1 (ja) * | 2013-02-07 | 2017-02-02 | 株式会社タンケンシールセーコウ | メカニカルシールおよびその製造方法 |
JP2016166645A (ja) * | 2015-03-09 | 2016-09-15 | 日本ピラー工業株式会社 | 多流路形ロータリジョイント |
WO2016143480A1 (ja) * | 2015-03-09 | 2016-09-15 | 日本ピラー工業株式会社 | 多流路形ロータリジョイント |
JP2016166619A (ja) * | 2015-03-09 | 2016-09-15 | 日本ピラー工業株式会社 | 多流路形ロータリジョイント |
US20170051857A1 (en) * | 2015-03-09 | 2017-02-23 | Nippon Pillar Packing Co., Ltd. | Multi-channel rotary joint |
JP2016166616A (ja) * | 2015-03-09 | 2016-09-15 | 日本ピラー工業株式会社 | ロータリジョイント |
JP2016217256A (ja) * | 2015-05-20 | 2016-12-22 | 株式会社浪速ポンプ製作所 | ポンプ、及びポンプ用メカニカルシール装置 |
US10876633B2 (en) | 2016-07-01 | 2020-12-29 | Nippon Pillar Co., Ltd. | Mechanical seal |
WO2018003258A1 (ja) * | 2016-07-01 | 2018-01-04 | 日本ピラー工業株式会社 | メカニカルシール |
JP2018003965A (ja) * | 2016-07-01 | 2018-01-11 | 日本ピラー工業株式会社 | メカニカルシール |
JP2018009631A (ja) * | 2016-07-13 | 2018-01-18 | 日本ピラー工業株式会社 | メカニカルシール |
JP2018063009A (ja) * | 2016-10-13 | 2018-04-19 | イーグル工業株式会社 | メカニカルシール |
JP2018071702A (ja) * | 2016-10-31 | 2018-05-10 | イーグル工業株式会社 | 冷凍機コンプレッサの軸封装置 |
CN110088515B (zh) * | 2016-12-27 | 2022-01-14 | 伊格尔工业股份有限公司 | 机械密封件 |
WO2018123617A1 (ja) * | 2016-12-27 | 2018-07-05 | イーグル工業株式会社 | メカニカルシール |
KR20190089055A (ko) * | 2016-12-27 | 2019-07-29 | 이구루코교 가부시기가이샤 | 메커니컬 시일 |
CN110088515A (zh) * | 2016-12-27 | 2019-08-02 | 伊格尔工业股份有限公司 | 机械密封件 |
JPWO2018123617A1 (ja) * | 2016-12-27 | 2019-10-31 | イーグル工業株式会社 | メカニカルシール |
KR102279664B1 (ko) * | 2016-12-27 | 2021-07-20 | 이구루코교 가부시기가이샤 | 메커니컬 시일 |
JP7055574B2 (ja) | 2016-12-27 | 2022-04-18 | イーグル工業株式会社 | メカニカルシール |
JP2018194148A (ja) * | 2017-05-22 | 2018-12-06 | 日本ピラー工業株式会社 | 軸封装置 |
JP2018200059A (ja) * | 2017-05-25 | 2018-12-20 | イーグルブルグマンジャパン株式会社 | 固定機構及びメカニカルシール |
JP2021188527A (ja) * | 2020-05-26 | 2021-12-13 | 株式会社荏原製作所 | ポンプ装置 |
JP7499070B2 (ja) | 2020-05-26 | 2024-06-13 | 株式会社荏原製作所 | ポンプ装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2481960B1 (en) | 2016-09-21 |
US20110198813A1 (en) | 2011-08-18 |
US9388905B2 (en) | 2016-07-12 |
EP2481960A1 (en) | 2012-08-01 |
CN102112785B (zh) | 2014-12-03 |
EP2481960A4 (en) | 2014-06-11 |
JP5557752B2 (ja) | 2014-07-23 |
JPWO2011036917A1 (ja) | 2013-02-14 |
CN102112785A (zh) | 2011-06-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5557752B2 (ja) | メカニカルシール | |
US7878509B2 (en) | Mechanical seal device | |
JP6104820B2 (ja) | 高温密封流体をシールする故障予知型メカニカルシールシステム | |
JP5087396B2 (ja) | メカニカルシール装置 | |
JP5580532B2 (ja) | メカニカルシール装置 | |
EP1288541A2 (en) | Mechanical sealing device | |
JP5271260B2 (ja) | メカニカルシール装置 | |
JP5259463B2 (ja) | 高温用デッドエンドシール | |
US20110139132A1 (en) | Exhaust gas recirculation valve thrust collar | |
US7210687B2 (en) | Shaft seal assembly | |
JP6140179B2 (ja) | メカニカルシール装置 | |
JP5124784B2 (ja) | メカニカルシール装置 | |
JP3782690B2 (ja) | メカニカルシール装置 | |
US8011668B2 (en) | Close coupled mechanical seal | |
US6811155B2 (en) | Shaft seal device | |
JP6685876B2 (ja) | メカニカルシール | |
JP2005140258A (ja) | メカニカルシール装置 | |
CN109973657B (zh) | 唇式机械密封装置 | |
JP6713901B2 (ja) | メカニカルシール | |
EP4027029A1 (en) | Bearing seat assembly | |
CN116378994A (zh) | 一种双端面机械密封结构及耐腐蚀泵 | |
CN113757265A (zh) | 一种适用于滚动轴承的轴承室 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080002226.5 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010546757 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13124106 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10818594 Country of ref document: EP Kind code of ref document: A1 |
|
REEP | Request for entry into the european phase |
Ref document number: 2010818594 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010818594 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |