WO2006022378A1 - メカニカルシール装置 - Google Patents
メカニカルシール装置 Download PDFInfo
- Publication number
- WO2006022378A1 WO2006022378A1 PCT/JP2005/015559 JP2005015559W WO2006022378A1 WO 2006022378 A1 WO2006022378 A1 WO 2006022378A1 JP 2005015559 W JP2005015559 W JP 2005015559W WO 2006022378 A1 WO2006022378 A1 WO 2006022378A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal
- sealing ring
- sealing
- ring
- mechanical seal
- 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.)
- Ceased
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
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- 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
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- 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
- F16J15/348—Pre-assembled seals, e.g. cartridge seals
Definitions
- the present invention relates to a mechanical seal device that has a simple structure and enables cooling of a sliding seal surface of a mechanical seal.
- it is suitable for sealing high-viscosity sealed fluid, sealed fluid containing slurry, sealed fluid of chemical liquid, etc., and solids of the sealed fluid adhere to the sliding surface of the sealed ring.
- the present invention relates to the technical field of a cartridge-type mechanical seal device that prevents clogging between seal parts and prevents sliding heat generation.
- Mechanical seal devices must be simple in structure and easy to assemble, disassemble, and inspect in order to be attached to mass production or mass processing equipment such as automobiles and chemical equipment. Furthermore, the mechanical seal device must have a structure that can reduce production costs. In addition, since the mechanical seal device seals the sealed fluid such as oil or chemical liquid, the sliding seal surface of the sealing ring must be prevented from generating heat due to the fluid that is the sealed fluid. . In recent years, based on this technical background, the structure of the mechanical seal device has been simplified, heat generation of the sliding seal surface has been prevented, and seals such as the sliding seal surface, packing, and o-ring have been used. There is a need for improvements that make inspections and repairs easier as capacity increases.
- FIG. 6 is a full sectional view of the mechanical seal device 100 attached to the casing 160.
- This mechanical seal device 100 can be used as a shaft seal device for a pump that operates a chemical liquid or the like.
- the mechanical seal device 100 is attached to the end face 160A of the casing 160 to seal between the rotating shaft 170 passing through the hole of the casing 160 and the casing 160 and to facilitate the installation.
- Cartridge type In this mechanical seal device 100
- the main structure is a mechanical seal 102 provided with a fixed seal ring 103 and a rotary seal ring 110 arranged in the machine A of the casing 160.
- the sleeve 120 for holding to the side is also a major component.
- the rotary seal ring 110 is disposed in a hole provided in the machine A of the casing 160.
- the rotating seal ring 110 is attached to one end of a long sleeve 120 having an inner peripheral surface 120C fitted to the rotating shaft 170 in order to be disposed in the back of the hole of the casing 160. Further, the other end portion of the outer side of the sleeve 120 is fitted to the holding portion 125, and the sleeve 120 is fixed to the rotating shaft 170 via the screw socket 127.
- the connection between the rotary seal ring 110 and the sleeve 120 is connected via a connecting part 129.
- O-rings 105C and 105C for sealing are arranged between the fittings of the rotating shaft 170 and the sleeve 120 and between the sleeve 120 and the connecting component 129.
- the sleeve 120 and the connecting component 129 are rotatably connected together via a drive pin 120P.
- the connecting part 129 and the rotary seal ring 110 are provided with a reference numeral in the fitting, and are connected together via a drive pin so as to be rotatable.
- the fitting between the connecting part 129 and the rotary seal ring 110 is sealed with an O-ring 105B.
- the fixed sealing ring 103 is fitted and held on a stepped annular surface provided at one end of a cylindrical holding body 106.
- the holding body 106 is fitted to the inner peripheral surface of the case main body 130 so as to be movable in the axial direction.
- the holding body 106 is held in a non-rotatable manner by a fixing pin 132 provided on the case main body 130.
- a gap between the holding body 106 and the case main body 130 is sealed with an O-ring 105A.
- a spring receiving portion 107 is fitted and fixed to the other end portion of the holding body 106.
- the case body 130 is joined to the end surface 160A of the casing 160, and the case body 130 is fixed to the casing 160 by screwing the nut 163A to the stud bolt 163 provided on the casing 160! .
- the side surface of the case body 130 is provided with a stepped surface 130A!
- a spring seat 112 is attached to the stepped surface 130A by a set screw 119.
- the spring 109 supported by the spring seat 112 is arranged between the spring receiving portion 107 and the spring 109 pushes the fixed sealing ring 103 through the spring receiving portion 107 and the holding body 106 suddenly. Pressure.
- the fixed sealing ring 103 pressed by the spring 109 is in close contact with the rotary sealing ring 110 to seal the sealed fluid.
- a mounting groove 112G is provided on the inner periphery of the spring seat 112.
- a gasket 115 wound in a spiral shape is disposed in the mounting groove 112G.
- the sealing surface 115B of the gasket 115 is in close contact with the outer peripheral surface 120B of the sleeve 120.
- the mechanical seal device 100 configured in this manner is provided with a flushing passage 140 and a quenching passage 141 in the case body 130 to supply the flushing fluid VI to the outer peripheral side of the mechanical seal 102.
- the quenching fluid VI is supplied to the inner peripheral side of the Cull Seal 102.
- the quenching liquid is an oil or chemical liquid existing on the outer peripheral side due to the centrifugal force acting on the fluid interposed between the sliding surfaces.
- a mechanical seal 102 provided with a quenching passage 140, a flushing passage 141, a rotary seal ring 110, and a fixed seal ring 103 must be arranged between the outer end portion and the inner end portion of the sleeve 120. Therefore, the sleeve 120 is long.
- the gasket 115 is provided at the outer end portion of the sleeve 120 and the O-rings 105C and 105C are provided at the inner end portion, the mechanical seal device 100 is further elongated, and the gasket 115 and The seal structure for mounting O-rings 105A, 105C, and 105C is complicated.
- O-rings 105C and 105C are provided inward of the machine A from the mechanical seal 102.
- the O-rings 105C and 105C allow the quenching fluid V2 from the quenching passage 141 to pass through the machine.
- Each of the O-rings 105A, 105B, 105C, and A must be configured so that the intrusion into A is sealed, and the sealed fluid force existing in the hole of the casing 160 is sealed into the S quenching passage 141.
- the 105C seal structure is complicated and large.
- the gasket 115 since the gasket 115 has to be mounted with the spring seat 112 protruding from the end face of the case body 130, the structure of the gasket 115 and the structure of the spring seat 112 for providing a sealing capability are complicated. Become. In addition, because of the structure in which the spring seat 112 and the fixed sealing ring 103 protrude from both side forces of the case main body 130, it becomes difficult to store and manage the mechanical seal device 100. Furthermore, the fixed sealing ring 103 is pushed into the hole of the casing 160 by the spring 109, and conversely, the rotary sealing ring 110 is adjusted and attached to the outside of the case body 130. It becomes difficult to attach and adjust the ring 110 and the stationary seal ring 103.
- the present invention has been made in view of the above-described problems, and the technical problem to be solved by the invention is that the mechanical seal slides on the side of the seal surface on which the mechanical seal slides with a quenching fluid. It is to make cooling, cleaning and lubrication effective. At the same time, it is to simplify the structure of the mechanical seal device and reduce the size. It is also intended to facilitate assembly, disassembly, and inspection of the mechanical seal device.
- the mechanical seal device of the present invention is a mechanical seal device that is attached to a device main body fitted with a shaft and seals the peripheral surface of the shaft, and is attached to the outer surface of the device main body so that the shaft can be inserted.
- a seal cover having a fitting surface and forming a space chamber outside the fitting surface, a turning passage that penetrates the space chamber and supplies a quenching fluid into the space chamber, and a space chamber provided in the seal cover.
- a first sealing ring having a sealing surface in the space chamber and a moving surface that is slidably fitted between an annular throttle surface on the outer side of the machine and a fitting surface of the seal cover;
- a second sealing ring that has a relative sliding sealing surface that can be in close contact with the sealing surface of the sealing ring, and that has a sealing surface facing the throttle surface on the outer periphery, and holds the second sealing ring in a sealed state and seals the shaft
- Adhering seal collar The ingredients And a packing for sealing the ententing fluid in the space chamber in close contact with the contact surface of the second sealing ring and the throttle surface of the seal cover.
- the quenching passage communicates with the space chamber covering the outer periphery of the mechanical force seal, and the quenching passage force is supplied to the quenching fluid (hereinafter referred to as a quenching fluid in the embodiments).
- a quenching fluid in the embodiments.
- the liquid can be circulated through the space chamber to effectively cool the outer peripheral surface of the mechanical seal.
- the cooling effect can be exhibited by cooling the outer surface side force, which has a larger area than the inner surface of the mechanical seal.
- the peripheral surface of the mechanical seal can be effectively cleaned by the quenching fluid supplied by the quenching passage force.
- the space force of the quenching fluid can be blocked from flowing out of the machine by the knocking, and the space can be formed in the space chamber that largely covers both sealing rings by the packing.
- the quenching fluid exists on the outer peripheral side of the first seal ring and the second seal ring, the quenching fluid enters the sealed fluid side due to the centrifugal force acting between the relative sliding surfaces and enters the sealed fluid. Can also be effectively prevented.
- the pressure in the quenching fluid can be increased by sealing the interior of the space with a knock, so the impurities that enter between the sliding seal surfaces and between the O-ring joint surfaces are pushed back to the low pressure side (partner side) by this pressure. Therefore, it is possible to exhibit the response capability that the seal surface of the first seal ring is in close contact with the relative sliding seal surface. For this reason, the sealing ability of the opposing sealing surface can be improved.
- the mechanical seal device is characterized in that the second seal ring has a joint surface on the opposite side in the axial direction with respect to the relative sliding seal surface and is joined to the seal collar.
- the packing mounting portion is sandwiched between the joint surface of the second seal ring and the holding surface of the seal collar, and the close contact surface opposite to the mounting portion is in close contact with the throttle surface. This seals the quenching solution in the space.
- the mechanical seal device of the first embodiment the packing held by being held outside the second sealing ring is tightly sealed with the throttle surface, so that the inside of the annular groove is sealed.
- the circulating quenching fluid can cool and clean the outer peripheral surface of the second sealing ring.
- the mechanical seal device is miniaturized by eliminating the need for knockin mounting parts. .
- the knocking effectively seals the quenching liquid in cooperation with the blocking effect due to the gap between the throttle surface and the sealing surface.
- the first seal ring is built in the seal cover, and the second seal ring is held in a unit with a seal force.
- the assembly and disassembly of the Cull Seal device is extremely easy.
- the first seal ring, the second seal ring, and the packing can be easily removed by removing the seal collar, facilitating replacement of parts.
- the mechanical seal device is unitized and the parts that hold the packing are not required, the mechanical seal device is arranged in large quantities by product management, including parts that protrude in the axial direction. Management becomes easier.
- the mechanical seal device includes a sealing surface in which the second sealing ring is disposed on the inner peripheral side of the throttle surface to form a minute gap with the throttle surface. It is what you have.
- the second sealing ring is disposed on the inner peripheral side of the throttle surface and has a sealing surface that forms a minute gap with the throttle surface.
- the second sealing ring rotates with a small gap from the surface, the fluid in the minute gap is pushed back to the inside of the machine to block it. This blockage is effectively exerted by the seal by the packing and the minute gap between the sealing surface and the throttle surface.
- the mechanical seal device has a mounting hole in the mounting portion of the knockin, and the mounting hole engages with a drive pin provided in the seal collar and rotates. It is attached impossible.
- the packing has the mounting hole in the mounting portion, and the mounting hole engages with the drive pin provided in the seal collar so as not to rotate. Therefore, even if the 2nd sealing ring rotates, the sealing performance of the close contact surface is demonstrated without the kinematic rotation.
- the knocking is held by the drive pin, the axial thickness can be reduced and the radial length can also be reduced. For this reason, the packing can be reduced in size, and the sliding resistance during rotation can be reduced.
- the mechanical seal device of the invention of the fourth embodiment according to the present invention is such that the first sealing ring is movably fitted to the fitting surface of the seal cover and is pushed outward by the resilient means. And the second seal ring is fitted into the seal collar, and the machine-side force relative sliding seal surface is closely fixed to the sliding seal surface of the first seal ring.
- the first seal ring is movably fitted to the fitting surface of the seal cover, and the second seal ring is fitted to the seal collar.
- Outer force The relative sliding seal surface is fixed to the sliding seal surface of the first seal ring so as to be intimately contacted.
- the first sealing ring is fitted and held with the seal cover, and can be easily assembled to the first sealing ring simply by attaching the second sealing ring to the outside force.
- the mechanical seal device can be disassembled and parts can be easily replaced.
- FIG. 1 is a full sectional view of a mechanical seal device according to a first embodiment of the present invention.
- FIG. 2 is a front view of the packing shown in FIG.
- FIG. 3 is a partial cross-sectional view of a packing according to a second embodiment of the present invention.
- FIG. 4 is a partial cross-sectional view of a packing according to a third embodiment of the present invention.
- FIG. 5 is a front view of the mechanical seal device shown in FIG. 1.
- FIG. 6 is a full sectional view of a mechanical seal device prior to the present invention.
- FIG. 1 shows a device main body (casing) to which a mechanical seal device 1 according to the present invention is attached.
- FIG. 2 is a cross-sectional view in which a mechanical seal device 1 is mounted in a cartridge type between both parts in order to seal between 60 and a rotary shaft (also referred to as a shaft) 70 fitted in a hole of the apparatus main body 60.
- FIG. 2 is a plan view of the packing provided in the mechanical seal device 1 of FIG.
- FIG. 5 is a front view of the mechanical seal device 1 of FIG. The mechanical seal device 1 will be described below with reference to these drawings.
- FIG. 1 shows a mechanical seal device 1 according to a first embodiment of the present invention.
- the rotating shaft 70 passes through the shaft hole of the apparatus main body (casing) 60.
- the mechanical seal device 1 has a seal cover 30 on the outer surface 61 provided around the shaft hole of the device body 60. Install through.
- four studs 63 are provided at four locations on the circumference on the outer surface 61 side.
- the rotating shaft 70 is mounted in a shaft hole and is rotatably supported by a bearing (not shown).
- the inside of the hole of the device main body 60 is the inside A, and the opposite side (outside) of the device main body 60 from the mechanical seal device 1 is the outside B.
- the seal cover 30 attached to the apparatus main body 60 is formed in a square shape.
- the seal cover 30 is provided with a fixing groove (chip hole) 45 that protrudes outward in each square direction of the central force.
- the fixing groove 45 of the seal cover 30 is passed through the planting bolt 63, and then the nut 63A is fastened to the planting bolt 63 to fix the seal cover 30 to the outer surface 61 of the apparatus main body 60.
- a hole is formed in the seal cover 30 in the axial direction.
- a positioning portion 30T is provided on the front surface of the fixed seal cover 30 so as to surround the hole.
- This positioning portion 30T is formed as a convex portion in the axial direction in order to provide a positioning groove 30B on the outer periphery.
- the inner peripheral surface forming the hole of the seal cover 30 forms a fitting surface 30C, a space (hereinafter referred to as an annular groove) 30G, and a throttle surface 30F in order from the inside A to the outside B of the machine.
- the annular groove 30G is formed with a larger diameter than the outer diameter of the fitting surface 30C between the fitting surface 30C and the throttle surface 30F (the annular groove 30G is not formed with a larger diameter than the fitting surface 30C.
- the outer diameter of the sealing ring 3 for fixing and the sealing ring 10 for rotation is smaller than the inner diameter of the mating surface 30C so that the outer diameter of the sealing ring 3 for rotation and the sealing ring for rotation 3 in the annular groove 30G
- the space (gap) with ring 10 may be increased.
- the axial width of the annular groove 30G is made large so that most of the sealing ring 3 for fixing and the sealing ring 10 for rotation are in the inner periphery of the annular groove 30G.
- the diaphragm surface 30F is formed on the inner periphery of the positioning portion 30T in order to increase the axial width of the annular groove 30G.
- the seal cover 30 is provided with a quenching passage 40 penetrating from the outer peripheral surface 30A into the annular groove 30G, and the drain hole 40A through which the annular groove 30G force also penetrates the outer peripheral surface 30A (see FIG. 5). See).
- a quenching passage 40 penetrating from the outer peripheral surface 30A into the annular groove 30G, and the drain hole 40A through which the annular groove 30G force also penetrates the outer peripheral surface 30A (see FIG. 5). See).
- the quenching fluid (hereinafter also referred to as quenching fluid) VI that has flowed through the piping is directly relative to the mechanical seal 2 (hereinafter also referred to as the sliding seal surface) 3A directly from the quenching passage 40. Sliding seal It is injected on the outer peripheral side with surface 10A.
- the supplied quenching liquid VI is circulated through the annular groove 30G and then discharged through the drain hole 40A.
- the heat generated during sliding between the sliding seal surface 3A and the relative sliding seal surface 10A is cooled, and impurities adhering to the mechanical seal 2 are cleaned.
- the mechanical seal 2 is a combination of the sealing ring 3 for fixing and the sealing ring 10 for rotation.
- the apparatus main body 60 is provided with a flushing passage 41 penetrating from the outer peripheral surface 30A to the fitting surface 30C. Further, if necessary, the second flushing passage 41A or the second quenching passage 41A or ⁇ penetrating from the outer peripheral surface 30A of the seal cover 30 into the inner peripheral surface 30C or into the annular groove 30G is a second drain hole.
- the flushing liquid (fresh water) V2 intermittently supplied from the flushing passage 41 is sealed by a sealing ring for fixing (for example, a first sealing ring) 3 and a sealing ring for rotation (for example, a second sealing ring) 10. Clean the inner peripheral surfaces 3C and 10C in contact with the fluid.
- the sealed fluid is a chemical liquid or high-viscosity liquid used in the apparatus main body 60 or a fluid containing impurities.
- the moving surface 3D of the fixing seal ring 3 is fitted so as to be movable in the axial direction.
- a first seal groove 3B for an O-ring that seals between the fitting surface 30C is formed on the moving surface 3D of the sealing ring 3 for fixing.
- the first seal groove 3B is formed with a large space on the side A of the machine with respect to the fitting surface 30C in order to clean the deposits.
- the configuration in which the diameter of the moving surface 3D on the in-machine A side of the first seal groove 3B is made smaller than the diameter of the fitting surface 30C to increase the interval is an example.
- an O-ring (seal ring) 5A is attached to the first seal groove 3B.
- the material of this O-ring 5A is fluorine rubber, -tolyl rubber, H-NBR, EPDM, perfloated elastomer, and so on.
- the sealing ring 3 for fixation forms a sliding seal surface 3A on the end surface opposite to the first seal groove 3B.
- the outer peripheral side of the fixing seal ring 3 is formed on the flange 3F.
- a guide groove 3G is formed in the flange 3F.
- a fixing pin 35 is press-fitted and attached to a fitting hole provided in a side surface of the annular groove 30G of the seal cover 30.
- the guide groove 3G is movably fitted to the fixing pin 35 so that the fixing seal ring 3 is moved in the axial direction by the fixing pin 35. Although it moves, it is locked in the direction of rotation.
- the seal cover 30 facing the flange 3F is provided with a plurality of hole-shaped spring seats 30H arranged in the circumferential direction.
- the seal collar 50 is provided with a fitting peripheral surface 50C and a second seal groove 50B on the inner periphery.
- the fitting peripheral surface 50C is fitted to the outer circumferential surface 70A of the rotary shaft 70, and the gap between the fitting surfaces of both parts is sealed by the O-ring 5C fitted to the second seal groove 50B.
- the end of the set screw 51 screwed to the seal collar 50 is fixed to the outer peripheral surface 70A of the rotary shaft 70, and the seal collar 50 is fixed to the rotary shaft 70.
- the outer periphery inside the sealing ring 10 for rotation in the seal collar 50 is formed on the coupling surface 50D.
- a holding surface 50S is provided on the annular stepped surface provided on the outer peripheral side from the coupling surface 50D.
- the drive pin 52 is press-fitted into a fitting hole provided in the holding surface 50S of the seal collar 50 and attached.
- a relative sliding seal surface 10 A is formed at one end of the rotary seal ring 10.
- the relative sliding seal surface 10A is formed so that it can slide in close contact with the sliding seal surface 3A of the fixing seal ring 3.
- a sealing surface 10D is provided on the outer periphery of the rotation sealing ring 10. This sealing surface 10D is fitted with a gap C close to the diaphragm surface 30F of the positioning portion 30T.
- the sealing surface 10D and the throttle surface 30F are closely fitted to block the quenching liquid VI supplied from the quenching passage 40 by the effect of the gap C.
- a stepped surface 10B for sealing is formed on the inner peripheral surface 10C of the sealing ring 10 for rotation.
- An O-ring 5B is attached to the stepped surface 10B, and the space between the inner peripheral surface 10C of the rotary seal ring 10 and the coupling surface 50D of the seal collar 50 is sealed.
- a pin recess 10G is formed on the joint surface 10E at the end of the rotary seal ring 10 on the outside B side.
- a pin press-fitted into the insertion hole of the seal collar 50 into the recess 10G for the pin The live pin 52 is inserted and locked together so that both the rotating seal ring 10 and the seal collar 50 do not move in the circumferential direction. Then, the drive pin 52 transmits the rotational force of the seal collar 50 to the rotation seal ring 10.
- This rotating seal ring 10 is also made of material strength such as silicon carbide, force bonbon, and other ceramics.
- the packing 4 that blocks the gap C between the throttle surface 30F and the sealing surface 10D is formed as shown in FIG.
- a front view of the packing 4 is shown in FIG.
- the packing 4 is formed in a ring shape to form a mounting portion 4B on the inner periphery and a seal portion 4A on the outer periphery.
- the outer periphery of the knockin 4 is formed on the close contact surface 4S, and the inner periphery is formed on the fitting surface 4C.
- the mounting part 4B is provided with a mounting hole 4H that fits tightly with the drive pin 52.
- the mounting hole 4H is fitted to the drive pin 52, and the mounting portion 4B is crimped between each surface of the joint surface 10E of the fixing seal ring 10 and the holding surface 50S of the seal collar 50. Further, the close contact surface 4S of the packing 4 is brought into close contact with the throttle surface 30F. The close contact surface 4S of the packing 4 is joined on the outside B side of the throttle surface 30F.
- the pressure of the quenching liquid VI in the annular groove 30G can be increased.
- the sliding seal surface 3A of the fixing seal ring 3 improves the operation of responding to the relative sliding seal surface 10A in the axial direction.
- the seal cover 30 is sealed by providing a gasket 34 between the device body 60 and the seal cover 30.
- the gasket 34 may have the shape shown in Fig. 1 when sealing between the seal cover 30 and the device main body 60, but the flushing liquid (fresh water) V2 from the flushing passage 41 is passed through the inner peripheral surface of the mechanical seal 2
- the inner peripheral surface of the ring-shaped gasket 34 is preferably smaller in diameter than the shape shown in FIG.
- This gasket is also made of material such as rubber, resin, or metal coated with rubber. Then, the flushing liquid V2 supplied from the flushing passage 41 comes into contact with the gasket 34 and flows through the flow passage between the mechanical seal 2 and the rotary shaft 70, and the inner peripheral surfaces 3C and 10C of the mechanical seal 2 and the slide. Wash the solid material adhering to the inner diameter surface of the dynamic seal surface 3A and the relative sliding seal surface 10A, and lubricate the sliding surface.
- the annular groove 3G of the seal cover 30 includes a fixing seal ring 3 and a rotation seal ring 10A. It is good to have a large dimension in the axial direction to cover most.
- the side surface of the annular groove 3G on the in-machine A side is formed to be close to the vicinity of the first seal groove 3B of the sealing ring 3 for fixing.
- the side surface of the annular groove 30G on the rotating seal ring 10 side reaches the middle of the rotating seal ring 10.
- the diameter of the outer peripheral surface of the annular groove 30G is preferably formed large.
- the quenching liquid VI supplied from the quenching passage 40 can be directly injected onto the inner diameter surfaces of the sliding seal surface 3A and the relative sliding seal surface 10A.
- the width of the annular groove 30G is formed so as to cover the outer periphery of the sealing ring 3 for fixing and the sealing ring 10 for rotation! Therefore, even if the sliding seal surface 3A of the fixing seal ring 3 and the relative sliding seal surface 10A of the rotation seal ring 10 slide on each other and generate heat due to friction, this cooling or washing It is cooled by the flow rate of the quenching liquid VI flowing through the annular groove 30G, and it is washed to exert its effect.
- the cooling and cleaning effects of this mechanical seal 2 include the structure close to the mechanical seal 2 of the annular groove 30G through which the quenching fluid VI flows and the quenching fluid VI when the packing 4 that seals the quenching fluid VI is rotated. This is achieved with a push-back structure.
- the seal cover 30 and the seal collar 50 configured as described above are attached to the seal collar 50 via the bolt 59, and the convex portion of the set plate 55 is fitted into the positioning groove 30B of the seal cover 30. Assemble at the same time as positioning.
- the socket screw 51 is screwed onto the rotary shaft 70 and the seal collar 50 is fixed to the rotary shaft 70.
- the set plate 55 is formed in a shape as indicated by an imaginary line.
- the set plate 55 is mounted on the circumferential surface of the seal collar 50 in a three-dimensional arrangement. This set plate 55 should be removed after assembly.
- FIG. 3 is a partial sectional view of the packing 4 showing a second embodiment according to the present invention.
- the packing 4 is configured as a discharge means 4T by providing uneven tooth shapes radially along the circumferential direction on a ring-shaped side surface.
- the discharge means 4T is formed of a convex portion 4T1 and a concave portion 4T2.
- Other names are the same as those shown in FIG. 2, and are composed of a seal portion 4A, a mounting portion 4B, a fitting surface 4C, and a close contact surface 4S.
- This packing 4 is made of fluorine resin, H-NBR, etc., or a rubber material.
- FIG. 4 is a partial sectional view of the packing 4 showing a third embodiment according to the present invention.
- This packing 4 has substantially the same shape as indicated by the same reference numeral as the packing 4 shown in FIG. The difference is that the spiral groove discharge means 4S1 is provided only on the quenching fluid VI (see Fig. 1) side of the close contact surface 4S, and the quenching fluid V1 is pushed back into the annular groove 30G to demonstrate the sealing ability of knock 4 It is something to be made.
- the packing 4 is made of a fluorine resin material.
- the sliding heat generation of the mechanical seal 1 is effectively cooled by the ententing liquid VI in the annular groove 30G, and the relative sealing surfaces 3A, 10A Damage and squealing phenomenon due to heat can be prevented.
- the sealing effect of the relative sealing surfaces 3A and 10A can be exerted by the cooling effect of the quenching liquid VI in the annular groove 30G.
- the sleeve as in the prior art is not required, the parts can be stored easily by managing the parts without protruding from the seal cover 30 in the axial direction.
- the packing 4 is sandwiched between the sealing ring 10 for rotation and the seal collar 50, it is easy to mount for assembly and disassemble for repair.
- the mechanical seal device 1 has a structure in which the seal cover 30 that holds the rotary seal ring 3 and the seal collar 50 that holds the rotary seal ring 10 are coupled to each other, so that the assembly becomes extremely easy. The effect can be expected.
- the combined structure of the annular groove 30G and the packing 4 allows the quenching liquid VI to efficiently circulate around the outer periphery of the mechanical seal 2 for cooling and cooling. Further, when the seal collar 50 is taken out from the rotary shaft 70, the fixed sealing ring 3, the rotary sealing ring 10 and the packing 4 which are fitted to each other can be easily disassembled, and parts can be easily replaced.
- the mechanical seal device prevents problems associated with the sliding heat of the seal surface, enables downsizing, and enables the mechanical seal device to be lighter. It is also useful to attach to the same. Also, the mechanical seal device is easy to assemble and disassemble, so it is useful for mass production devices. In addition, it is excellent in cooling and cleaning of mechanical seal devices, lubrication of sliding seal surfaces, and exerts durability, so it is useful for sealing chemical liquids.
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Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005800329357A CN101031745B (zh) | 2004-08-26 | 2005-08-26 | 机械密封装置 |
| JP2006532632A JP5001654B2 (ja) | 2004-08-26 | 2005-08-26 | メカニカルシール装置 |
| KR1020077004600A KR101233673B1 (ko) | 2004-08-26 | 2005-08-26 | 메카니컬 실링장치 |
| EP05774550A EP1788290B1 (en) | 2004-08-26 | 2005-08-26 | Mechanical seal device |
| US11/660,745 US7878509B2 (en) | 2004-08-26 | 2005-08-26 | Mechanical seal device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-247313 | 2004-08-26 | ||
| JP2004247313 | 2004-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006022378A1 true WO2006022378A1 (ja) | 2006-03-02 |
Family
ID=35967580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/015559 Ceased WO2006022378A1 (ja) | 2004-08-26 | 2005-08-26 | メカニカルシール装置 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7878509B2 (ja) |
| EP (1) | EP1788290B1 (ja) |
| JP (1) | JP5001654B2 (ja) |
| KR (1) | KR101233673B1 (ja) |
| CN (1) | CN101031745B (ja) |
| WO (1) | WO2006022378A1 (ja) |
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| WO2011007765A1 (ja) | 2009-07-16 | 2011-01-20 | イーグル工業株式会社 | メカニカルシール装置 |
| WO2011036917A1 (ja) * | 2009-09-24 | 2011-03-31 | イーグル工業株式会社 | メカニカルシール |
| JPWO2010123025A1 (ja) * | 2009-04-23 | 2012-10-25 | イーグル工業株式会社 | メカニカルシール装置 |
| WO2013038792A1 (ja) | 2011-09-12 | 2013-03-21 | イーグル工業株式会社 | メカニカルシール |
| CN103835863A (zh) * | 2014-03-07 | 2014-06-04 | 国电联合动力技术有限公司 | 一种水下密封系统、应用其的潮汐能发电机组及应用方法 |
| CN103835862A (zh) * | 2014-03-07 | 2014-06-04 | 国电联合动力技术有限公司 | 一种水下密封系统、应用其的潮汐能发电机组及应用方法 |
| WO2015064463A1 (ja) * | 2013-10-29 | 2015-05-07 | 株式会社タンケンシールセーコウ | メカニカルシール |
| JP2018189090A (ja) * | 2017-05-05 | 2018-11-29 | マン・エナジー・ソリューションズ・エスイー | シールシステム、シールシステムを有するターボ機械及びその清掃方法 |
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- 2005-08-26 US US11/660,745 patent/US7878509B2/en active Active
- 2005-08-26 JP JP2006532632A patent/JP5001654B2/ja not_active Expired - Fee Related
- 2005-08-26 EP EP05774550A patent/EP1788290B1/en not_active Ceased
- 2005-08-26 KR KR1020077004600A patent/KR101233673B1/ko not_active Expired - Fee Related
- 2005-08-26 WO PCT/JP2005/015559 patent/WO2006022378A1/ja not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8210541B2 (en) * | 2007-04-12 | 2012-07-03 | Eagle Industry Co., Ltd. | Mechanical seal device |
| US20100117303A1 (en) * | 2007-04-12 | 2010-05-13 | Hidekazu Takahashi | Mechanical seal device |
| WO2008132958A1 (ja) | 2007-04-12 | 2008-11-06 | Eagle Industry Co., Ltd. | メカニカルシール装置 |
| JP5271260B2 (ja) * | 2007-04-12 | 2013-08-21 | イーグル工業株式会社 | メカニカルシール装置 |
| EP2146120A4 (en) * | 2007-04-12 | 2011-11-16 | Eagle Ind Co Ltd | MECHANICAL SEALING DEVICE |
| JPWO2010123025A1 (ja) * | 2009-04-23 | 2012-10-25 | イーグル工業株式会社 | メカニカルシール装置 |
| WO2011007765A1 (ja) | 2009-07-16 | 2011-01-20 | イーグル工業株式会社 | メカニカルシール装置 |
| US8757631B2 (en) | 2009-07-16 | 2014-06-24 | Eagle Industry Co., Ltd. | Mechanical seal device |
| JPWO2011036917A1 (ja) * | 2009-09-24 | 2013-02-14 | イーグル工業株式会社 | メカニカルシール |
| WO2011036917A1 (ja) * | 2009-09-24 | 2011-03-31 | イーグル工業株式会社 | メカニカルシール |
| US9388905B2 (en) | 2009-09-24 | 2016-07-12 | Eagle Industry Co., Ltd. | Mechanical seal |
| JPWO2013038792A1 (ja) * | 2011-09-12 | 2015-03-23 | イーグル工業株式会社 | メカニカルシール |
| WO2013038792A1 (ja) | 2011-09-12 | 2013-03-21 | イーグル工業株式会社 | メカニカルシール |
| US8857819B2 (en) | 2011-09-12 | 2014-10-14 | Eagle Industry Co., Ltd. | Mechanical seal |
| WO2015064463A1 (ja) * | 2013-10-29 | 2015-05-07 | 株式会社タンケンシールセーコウ | メカニカルシール |
| CN103835862A (zh) * | 2014-03-07 | 2014-06-04 | 国电联合动力技术有限公司 | 一种水下密封系统、应用其的潮汐能发电机组及应用方法 |
| CN103835863A (zh) * | 2014-03-07 | 2014-06-04 | 国电联合动力技术有限公司 | 一种水下密封系统、应用其的潮汐能发电机组及应用方法 |
| JP2018189090A (ja) * | 2017-05-05 | 2018-11-29 | マン・エナジー・ソリューションズ・エスイー | シールシステム、シールシステムを有するターボ機械及びその清掃方法 |
| JP7053365B2 (ja) | 2017-05-05 | 2022-04-12 | マン・エナジー・ソリューションズ・エスイー | シールシステム、シールシステムを有するターボ機械及びその清掃方法 |
| US11434930B2 (en) | 2017-05-05 | 2022-09-06 | Man Energy Solutions Se | Sealing system, turbomachine with a sealing system and method for cleaning the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2006022378A1 (ja) | 2008-05-08 |
| CN101031745A (zh) | 2007-09-05 |
| EP1788290A1 (en) | 2007-05-23 |
| US20080093806A1 (en) | 2008-04-24 |
| EP1788290B1 (en) | 2011-11-02 |
| KR101233673B1 (ko) | 2013-02-15 |
| EP1788290A4 (en) | 2010-04-14 |
| JP5001654B2 (ja) | 2012-08-15 |
| US7878509B2 (en) | 2011-02-01 |
| CN101031745B (zh) | 2010-05-26 |
| KR20070058462A (ko) | 2007-06-08 |
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