JP3188935U - Gasket transfer jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gasket transport jig capable of transporting a gasket to a gasket mounting surface without deforming the gasket. SOLUTION: This jig 80 has a ring plate-shaped jig body 82 corresponding to a longitudinal direction of a first gasket 50, and a first gasket 50 can be attached to and detached from a detachable surface 82a of the jig body 82. It has a first attachment 90 to be attached to. With the first gasket 50 attached to the jig body 82, the first gasket 50 is placed on the gasket mounting surface 32, and the first fixture 90 is operated from the operation surface 82b on the side opposite to the attachment / detachment surface 82a of the jig body 82. Then, the gasket transfer jig 80 can be removed from the first gasket 50 with the first gasket 50 placed on the gasket mounting surface 32. [Selection diagram] Fig. 3

Description

  The present invention relates to a gasket conveying jig.

  The gasket is inserted into a pipe joint, a pressure vessel manhole, or a valve bonnet and compressed to close the gap, and at the same time prevent leakage of fluid or entry of foreign matter from the outside. Various types are used in terms of pressure resistance, chemical resistance, workability, workability, price, etc.

  For example, a spiral gasket is used between the flange surfaces of various pipes to prevent leakage of fluid flowing in the pipes. Spiral gaskets have high sealing properties, and are widely used particularly in piping lines in which high-temperature and high-pressure fluid flows in the pipes, such as piping lines in thermal power / nuclear power plants and petroleum refining / petrochemical plants.

  A structure has been proposed in which an annular O-ring is doubled on the contact surface between the flanges, and an inert gas is supplied to the gap between the double O-rings to seal the inside (Patent Document 1). ).

  However, in order to arrange double sealing materials such as O-rings and to supply an inert gas to the gap between them, it is necessary to ensure a gap between the sealing materials. If the positional relationship between the gap between the sealing materials and the inert gas supply port is deviated, the sealing performance is reduced.

  In particular, in the case of a centrifugal thin film evaporator used in the process of producing a polymer containing an alicyclic structure, the inside of the evaporator needs to be depressurized. There is a possibility that defects such as poor transparency occur in the transparent sheet made of the structure-containing polymer.

  In applications other than centrifugal thin film evaporators, even when a high performance seal is required between relatively large joints, a plurality of gaskets are arranged at predetermined intervals to improve the sealing performance. It is also possible. However, it is difficult to arrange a plurality of gaskets at a predetermined interval, particularly between large joints. In addition, a large gasket may be deformed from a circular shape to an elliptical shape in the middle of conveyance, and it is difficult to accurately position and arrange the elliptically deformed gasket at a predetermined position on the gasket mounting surface.

  Furthermore, in order to improve the sealing performance, there is a demand for a single gasket to be accurately positioned and arranged at a predetermined position between the joints. In such a case, especially in the case of a large-diameter gasket, it is easily deformed into an oval shape during its conveyance, and if it is deformed, it is difficult to accurately position and arrange the gasket at a predetermined position between the joint portions. become.

WO2009 / 060756A1

  This invention is made | formed in view of such an actual condition, The objective is to provide the gasket conveyance jig | tool which can be conveyed to a gasket mounting surface, without deform | transforming a gasket.

In order to achieve the above object, the gasket conveying jig according to the present invention is:
A gasket conveying jig for conveying at least one first gasket to a predetermined position on a gasket mounting surface,
A corresponding ring plate-shaped jig body along the longitudinal direction of the first gasket;
A first attachment for detachably attaching the first gasket to the attachment / detachment surface of the jig body,
With the first gasket attached to the jig body, the first gasket is placed on the gasket attachment surface, and the first attachment tool is operated from the operation surface opposite to the attachment / detachment surface of the jig body. The gasket conveying jig can be detached from the first gasket while the first gasket is placed on the gasket mounting surface.

  According to this gasket conveyance jig, since the first gasket is attached to the ring plate-shaped jig main body, the first gasket is effectively deformed into an oval shape during the conveyance. Can be suppressed. In addition, after the transfer, the first gasket is placed on the gasket mounting surface with the first gasket attached to the jig body. Thereafter, the first fixture can be operated from the operation surface opposite to the attachment / detachment surface of the jig body, and the gasket conveying jig can be removed from the first gasket with the first gasket placed on the gasket attachment surface. is there. Therefore, the first gasket can be installed at an accurate position on the gasket mounting surface without being deformed.

  After that, if the gasket mounting surface of the counterpart member is attached to the gasket mounting surface, the gasket is elastically deformed well between them, and the space between them can be sealed. In the present invention, since the first gasket is accurately mounted at a predetermined position on the gasket mounting surface, the sealing characteristics of the first gasket are improved even when the size of the mounting member is large.

Preferably, a space in which a second gasket different from the first gasket is disposed is formed on the outer surface of the first gasket on the attachment / detachment surface of the jig body.
The second gasket is detachably attached to the attachment / detachment surface with a second attachment tool at a predetermined gap interval with respect to the first gasket.

  In this case, not only the first gasket but also the second gasket is positioned and attached to the gasket mounting surface with a predetermined gap width with high accuracy relative to the first gasket. Therefore, it becomes easy to introduce an inert gas or the like into the gap between the first gasket and the second gasket, and the sealing characteristics are further improved.

Preferably, the first gasket is a spiral gasket having a ring,
The first fixture is a bolt that is screwed into a screw hole formed in the ring of the first gasket.

  In a spiral gasket, the ring attached to it does not affect the sealing performance. Therefore, even if a screw hole is drilled in the ring and attached to the gasket conveying jig, there is no problem in the sealing characteristics of the spiral gasket, and good sealing performance is exhibited. Further, the gasket can be easily attached to and detached from the conveying jig from the operation surface side of the jig body by turning the bolt.

FIG. 1 is a schematic cross-sectional view of a centrifugal thin film evaporator to which a gasket is attached using a gasket conveying jig according to the present invention. 2 is an enlarged cross-sectional view of a main part of the II part shown in FIG. FIG. 3 is a cross-sectional view of the main part showing a state in which two gaskets are installed on the gasket mounting surface of the flange together with the conveying jig according to the present invention in order to realize the seal structure shown in FIG. FIG. 4 is a perspective view showing a state in which a gasket conveying jig according to an embodiment of the present invention is housed inside a conveying wooden frame. FIG. 5 is a partial perspective view showing a partially cut section of the gasket conveying jig for holding the gasket shown in FIG. FIG. 6 is an overall perspective view of a gasket conveying jig according to another embodiment of the present invention.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
First, the centrifugal thin film evaporator 2 will be described with reference to FIG. The centrifugal thin film evaporator 2 includes a cylindrical body 4 and a radial stirring blade 8 having a rotating shaft 6 at the center of the body 4. By rotating the stirring blade 8, a thin film solution is formed on the wall of the body. The solvent is evaporated from the solution.

  A heating jacket 10 is attached to the outer periphery of the body 4 so that the inside of the body 4 can be heated to a predetermined temperature. A raw material inlet 12 is formed on the upper side surface of the body 4, from which the raw material is introduced. A drive device such as a motor 14 is mounted on the upper portion of the body 4 where the raw material inlet 12 is formed, and the rotary shaft 6 is driven to rotate. A bottom collection container 16 is connected to the lower part of the trunk. In the evaporator 2, the recovered polymer is discharged from the outlet 18 of the bottom recovery container 16.

  In order to manufacture such a large processing apparatus such as the evaporator 2, it is necessary to detachably join and assemble a plurality of members and to keep the inside airtight from the outside. For example, in the illustrated evaporator 2, it is necessary to join the members in the plurality of flange joint structure portions 20, 22, 24, and 26 so that air or the like does not enter the inside from the joint portions.

  Therefore, in this embodiment, as shown in FIG. 2, the first spiral gasket 50 is provided between the flange 30 of one member and the flange 40 of the other member in the relatively large-diameter flange joint structure portion. And the second spiral gasket 60 are arranged with a predetermined gap 70 in the radial direction R. For example, an inert gas is supplied to the predetermined gap 70 from a gas supply unit 72 provided in one of the flanges 30 and is inert from a gas discharge unit 74 disposed at a 180 ° symmetrical position with respect to the gas supply unit 72. Gas is discharged.

  The first spiral gasket 50 and the second spiral gasket 60 have the same structure except that the outer diameter and the inner diameter are different, and have a ring shape continuous in the circumferential direction C as a whole. The first spiral gasket 50 is arranged so that a predetermined gap 70 is maintained inside the second spiral gasket 60 in the radial direction.

  As shown in FIG. 5, the first spiral gasket 50 includes an inner ring 52 and a hoop material 54 joined to the outside of the inner ring 52. The hoop material 54 has, for example, a cross-sectional shape such as a dogleg shape or a C shape, and a filler material may be interposed between the hoop materials 54 wound in a spiral shape. As shown in FIG. 2, both ends of the hoop material 54 in the thickness direction (Z-axis direction in the figure) are compressed by being in contact with the gasket mounting surface 32 of the flange 30 and the gasket mounting surface 42 of the flange 40, thereby sealing function. Demonstrate.

  The second spiral gasket 60 is also composed of an inner ring 62 and a hoop material 64 joined to the outer side of the inner ring 62, and is similar to the first spiral gasket 50 except that the outer diameter and inner diameter thereof are different. It has a structure.

  In the present embodiment, the joint surface 34 on the outer periphery of the flange 30 is joined to the joint surface 44 on the outer periphery of the flange 40 using a bolt nut or the like, and the distance between the attachment surface 32 and the attachment surface 42 is constant. The hoop materials 54 and 64 are compressed in the Z-axis direction at a predetermined compression rate. In this embodiment, a concave portion is formed on the inner peripheral side of the joint surface 34 in one flange 30 and the gasket mounting surface 32 is formed at a position recessed with respect to the joint surface 34. A recess may be provided in the joint surface 44. Or a recessed part may be formed in both the joint surfaces 34 and 44, and the attachment surfaces 32 and 42 may be formed.

  In order to realize the flange joint structure portion 20 as shown in FIG. 2, the gasket 50 and the gasket 60 are provided with a uniform predetermined gap 70 along the circumferential direction C, as shown in FIG. It is important to position and arrange on the mounting surface 32 of the flange 30. Therefore, in this embodiment, a gasket conveying jig 80 shown in FIGS. 3 to 5 is used.

  As shown in FIGS. 4 and 5, the gasket transport jig 80 has a corresponding ring plate-shaped jig body 82 along the longitudinal direction of the first gasket 50 and the second gasket 60. The material of the jig body 82 is not particularly limited, and may be plastic or metal.

  In addition, the circumferential direction C in the drawing is the longitudinal direction (circumferential direction) of the spiral gaskets 50 and 60, and the Z axis coincides with the central axis of the spiral gaskets 50 and 60, and It is parallel to the thickness direction. Further, the radial direction R is a radial direction from the central axis of the spiral gaskets 50, 60, and in this embodiment, coincides with the width direction of the gaskets 50, 60.

  In this embodiment, the width of the jig body 82 in the radial direction R is set to a width that can hold the second gasket 60 with a predetermined gap 70 on the outer periphery of the first gasket 50 as shown in FIG. is there. That is, the width of the jig body 82 in the radial direction R is greater than the width of the first gasket 50 in the radial direction R plus the radial width of the second gasket R and the width of the gap 70 in the radial direction R. Largely set.

  A plurality of screw holes 56 and 66 are formed in the rings 52 and 62 of the gaskets 50 and 60 along the circumferential direction at equal intervals or unequal intervals, preferably at equal intervals. The number of screw holes 56 and 66 along the circumferential direction is not particularly limited, but is determined according to the outer diameters of the gaskets 50 and 60, and is, for example, 3 to 64. Bolt holes 84 and 86 penetrating from the attaching / detaching surface 82a to the operation surface 82b are formed in the jig main body 82 at positions corresponding to the screw holes 56 and 66.

  The screw portions of the bolts 90 and 92 are inserted into the bolt holes 84 and 86, the heads of the bolts are positioned on the operation surface 82b side, and the tips of the screw portions protrude on the detachable surface 82a side. . Screw holes 56 and 66 formed in the rings 52 and 62 of the spiral gaskets 50 and 60 are screwed to the tips of the screw portions of the bolts 90 and 92, respectively. By rotating the heads of the bolts 90 and 92, the spiral gaskets 50 and 60 can be attached to and detached from the attaching / detaching surface 82 a of the conveying jig 80.

  A washer or the like may be interposed between the rings 52 and 62 and the attaching / detaching surface 82a in order to prevent overtightening of the bolt. Further, in the present embodiment, the attachment / detachment surface 82a and the operation surface 82b are a front surface and a back surface located on opposite sides of the ring plate-shaped jig main body 82, and either of them may be the front surface or the back surface.

  As shown in FIG. 4, the gasket conveyance jig 80 of the present embodiment is accommodated and conveyed in the frame member 100 with the bottom plate 102 in a state where the gaskets 50 and 60 are attached. The material of the bottom plate 102 and the frame member 100 is not particularly limited, and examples thereof include wood, plastic, and metal. On the surface of the bottom plate 102, it is preferable that the transport jig 80 has a detachable surface 82 a on which the gaskets 50 and 60 are mounted in the jig body 82. This is to prevent the weight of the jig body 80 from acting on the gaskets 50 and 60.

  According to this gasket conveying jig 80, since the first gasket 50 and the second gasket 60 are attached to the ring plate-shaped jig main body 82 with a predetermined gap 70, the gasket 50, Inconveniences such as deformation of 60 into an ellipse can be effectively suppressed. For example, in the past, in a spiral gasket having an inner diameter of 1600 mm or more, the distortion of the gasket during transportation was 3 mm or more at the maximum, but when the gasket conveying jig 80 of the present embodiment is used, the maximum distortion of the gasket is increased. It can be 0.2 mm or less.

  Further, after the conveyance, as shown in FIG. 3, the gaskets 50 and 60 are placed on the gasket mounting surface 32 in a state where the gaskets 50 and 60 are attached to the jig main body 82. Thereafter, the bolts 90 and 92 are operated from the operation surface 82b opposite to the attaching / detaching surface 82a of the jig main body 82, and the gasket conveying jig 80 is placed on the gasket 50, with the gaskets 50 and 60 placed on the gasket mounting surface 32. 60 can be removed. Therefore, the gaskets 50 and 60 can be installed at an accurate position on the gasket mounting surface 32 without being deformed.

  Thereafter, as shown in FIG. 2, if the gasket mounting surface 42 of the flange 40 which is the counterpart member is attached to the gasket mounting surface 32, the gaskets 50 and 60 are elastically deformed between them, The gap can be sealed. In the present invention, since the gaskets 50 and 60 are accurately attached at predetermined positions on the gasket attachment surface 32, the sealing characteristics of the gaskets 50 and 60 are improved even when the gaskets 50 and 60 are large.

  In addition, in the present embodiment, as shown in FIG. 3, the gap 70 between the first spiral gasket 50 and the second spiral gasket 60 can be easily secured. It becomes easier to introduce an active gas and the sealing characteristics are further improved.

  In the present embodiment, the screw holes are formed in the rings 52 and 62 of the spiral gaskets 50 and 60. However, since the hoop members 54 and 64 perform the sealing function, There is no problem with the sealing characteristics, and good sealing performance is exhibited. In the present embodiment, the gaskets 50 and 60 can be easily attached to and detached from the conveying jig 80 from the operation surface 82 b side of the jig body 82 by turning the bolts 90 and 92.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention.

  For example, as shown in FIG. 6, a rod-shaped reinforcing material 88 that intersects the cross may be provided integrally with the jig main body 82A inside the jig main body 82A of the gasket conveying jig 80A. By providing the reinforcing material 88, the strength of the jig main body 82a is improved, and the effect of preventing deformation of the gasket is further improved. However, when a rotating shaft or the like is disposed on the shaft core portion of the flange 30 where the gasket mounting surface 32 shown in FIG. 3 is formed, the reinforcing member 88 shown in FIG. Sometimes it is better not to.

  In the above-described embodiment, the spiral gaskets 50 and 60 are obtained by joining the rings 52 and 62 to the inside of the hoop materials 54 and 64. However, the invention is not limited thereto, and the rings are joined to the outside of the hoop material. A spiral gasket may be used, or a ring may be joined to both the inside and the outside. Furthermore, a spiral gasket without a ring may be used. Further, the gasket conveyed by the gasket conveying jig of the present invention is not limited to the spiral gasket, and may be a gasket such as a soft gasket or a metal jacket gasket.

  In the above-described embodiment, the two gaskets 50 and 60 are detachably attached to the attachment / detachment surface 82a of the jig 80. However, by increasing the width of the jig 80 in the radial direction R, two or more are provided. It is also possible to detachably attach the gasket. Alternatively, the single gasket 50 may be detachably attached to the attachment / detachment surface 82 a of the jig 80.

  Further, in the present invention, the spiral gaskets 50, 60 may be detachably attached to the attachment / detachment surface 82a of the jig body 82 by attachment means (attachment tool) other than the bolts 90, 92. Examples of other attachment means include a binding band, a wire, a hook, and a lock nut.

30, 40 ... Flange 32, 42 ... Gasket mounting surface 34, 44 ... Joint surface 50 ... First spiral gasket 60 ... Second spiral gasket 70 ... Gap 80 ... Gasket conveying jig 82 ... Jig body 82a ... Detachable surface 82b ... operation surfaces 84, 86 ... bolt holes 90, 92 ... bolts

Claims (3)

A gasket conveying jig for conveying at least one first gasket to a predetermined position on a gasket mounting surface,
A corresponding ring plate-shaped jig body along the longitudinal direction of the first gasket;
A first attachment for detachably attaching the first gasket to the attachment / detachment surface of the jig body,
With the first gasket attached to the jig body, the first gasket is placed on the gasket attachment surface, and the first attachment tool is operated from the operation surface opposite to the attachment / detachment surface of the jig body. A gasket conveying jig in which the gasket conveying jig can be detached from the first gasket in a state where the first gasket is placed on the gasket mounting surface. On the outer peripheral side of the first gasket, a space in which a second gasket different from the first gasket is arranged is formed on the detachable surface of the jig body,
The gasket conveying jig according to claim 1, wherein the second gasket is detachably attached to the attachment / detachment surface with a second attachment tool at a predetermined gap interval with respect to the first gasket. The first gasket is a spiral gasket having a ring;
The gasket conveying jig according to claim 1 or 2, wherein the first fixture is a bolt that is screw-coupled to a screw hole formed in the ring of the first gasket.

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