JP2018062974A - Partial update renewal method of end plate part and special jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a partial update renewal method of an end plate part capable of easily updating a part of the end plate part of a container.SOLUTION: A method for partially updating an end plate part comprises the steps of: partially cutting a portion 5 to be updated, which is inside a knuckle part 3 and outside a disk part 4, in the circumferential direction; and mounting a fan-shaped new end plate 10 on the opening 11a generated by the cutting. By repeating the cutting step and the new end plate mounting step, because part of the end plate part 1 is updated, it is possible to partially update the end plate part with a short construction period and at a low construction cost.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a partial update method for a mirror plate part that partially updates a mirror plate part of a container such as a pressure vessel, and a special jig used in this partial update method.

In a pressure vessel such as an atmospheric distillation unit of an oil refinery or a main distillation column of a vacuum distillation unit, if a part of the end plate is corroded or deformed due to long-term use, the part is partially It is necessary to update (replace) a new part or repair it.
The thing of patent document 1 is known as an example of the repair method of the end plate part (For example, the plenum chamber of the regeneration tower for fluid catalytic cracking apparatuses) of a pressure vessel.
The repair method removes the wear-resistant coating layer from the inner wall surface of the plenum chamber, then corrects the deformed portion of the plenum chamber, and then welds a plurality of reinforcing ribs on the inner wall surface of the plenum chamber; Thereafter, the inner wall surface of the plenum chamber including the plurality of reinforcing ribs is coated with a new wear-resistant coating layer.

Japanese Patent No. 5765516

  By the way, if the plate thickness reduction or deformation of the end plate is increased due to aging or corrosion, the repair method for the end plate of the pressure vessel cannot be used, so the entire update including the body and end of the vessel Was necessary. As described above, conventionally, there is no method for partially updating the end plate part, and a great deal of cost is required for the renewal work.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for partially updating the end plate portion that can easily update at least a part of the end plate portion of the container and a special jig used in this method. Yes.

In order to achieve the above object, the method of partially updating the end plate portion according to the present invention is a method of updating at least a part of the end plate portion of the container,
When the outer peripheral side of the end plate part is a knuckle part and the center side is a disk part,
A resection process for partially resecting a portion to be renewed inside the knuckle portion and outside the disk portion in the circumferential direction, and a new end plate member for attaching a fan-shaped end plate member to the opening generated by the resection At least a part of the end plate portion is updated by repeating the mounting step.

In the present invention, a cutting step of partially cutting in the circumferential direction at least a portion to be updated that is inside the knuckle portion and outside the disk portion, and a fan-shaped new end plate member is formed in the opening generated by the cutting. By repeating the attaching new end plate member attaching step, at least a part of the end plate portion is updated, so that the end plate portion can be partially updated in a short construction period and at a low construction cost. That is, since the part to be updated is replaced with a new new end plate member in the circumferential direction one after another, a new end plate unit is obtained, so that the updating operation can be performed without removing the entire container. The construction period can be shortened and the construction cost can be reduced.
In addition, it is possible to perform excision work and welding work using the knuckle part of the end plate part, the disk part, the part to be updated that has not been excised, and the updated new end plate member as the work floor, so it is not necessary to assemble a separate scaffold and can be updated easily Work can be done.

In the configuration of the present invention, in the excision step, the part to be updated is partially excised so as to be a diagonal of the end plate part,
In the new end plate member attaching step, the new end plate member may be attached to each of two openings generated by excision.

  According to such a configuration, in the excision process, the part to be updated is partly excised so as to be opposite to the end plate part, and in the new end plate member attaching process, each of the two openings generated by the excision is provided. Since the new end plate member is attached, the balance of the section modulus in the circumferential direction of the end plate portion is good and the strength is stable in a state where both openings are generated.

  Moreover, in the said structure of this invention, after attaching all the new end plate members which should be updated, you may attach a new disk member to the opening produced by excising the said disk part and excising.

  According to such a configuration, when the deformation of the disk part becomes large and needs to be updated, the disk part can be easily updated by attaching the new disk member to the opening generated by cutting the disk part. It can be carried out.

The special jig according to the present invention is a special jig used in the partial update method of the end plate part,
A partition that is interposed between two end panel members adjacent in the circumferential direction;
A support part provided at the lower end of the partition part to support the lower surfaces of the two new end plate members;
And an insertion member that is inserted into a through-hole formed in the partition and contacts the upper surfaces of the two new end plate members.

In the present invention, when performing the above-described partial updating method of the end plate portion, a partition portion is interposed between two new end plate members adjacent in the circumferential direction, and the lower surfaces of the two new end plate members are supported by the support portion. Further, by inserting the insertion member through the through-hole formed in the partition portion and contacting the upper surfaces of the two new end plate members, the two new end plate members are sandwiched between the insertion member and the support portion. And it can hold | maintain with a predetermined clearance gap by a partition part.
Therefore, by forming the groove surfaces at the weld ends of the two new end plate members, the groove width can be kept uniform, so that welding work between the two new end plate members can be performed stably. Yes.

In addition, the method for partially updating the end plate portion according to the present invention prepares the special jig and forms a groove surface on each of the weld end portions of the two new end plate members,
The partition portion of the special jig is interposed between the groove surfaces, the lower surfaces of the two new end plate members are supported by the support portion of the special jig, and the insertion member of the special jig is further separated from the partition surface. It is characterized by being inserted into a through hole formed in the part and abutting on the upper surfaces of the two new end plate members.

In the present invention, the two new end plate members can be held between the groove surfaces with a predetermined gap so as to be sandwiched between the insertion member and the support portion.
Therefore, since the groove width can be kept uniform, the welding operation of the two new end plate members can be stably performed.

  According to the present invention, a part of the end plate part of the container can be easily updated, and since the knuckle part, the disk part, and the part to be updated that have not been excised can be used as a work floor, the excision work and the welding work can be performed, so the update is easy. Work can be done.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view illustrating a main part of a plenum head according to an embodiment of the present invention. It is a schematic plan view of the plenum chamber (end plate part). The process of the partial update method of a mirror-plate part is shown, (a) is a schematic plan view of the mirror-plate part which shows the state which welded the first new mirror-plate member, (b) is opening the 2nd new mirror-plate member. Schematic plan view of the end plate portion showing the fitted state, (c) is a schematic plan view of the end plate portion showing a state where the second new end plate member is welded, and (d) is a third new end plate member fitted into the opening. (E) is a schematic plan view of the end plate portion showing a state where the third new end plate member is welded, and (f) is an end view of the end plate portion showing the state where the disk portion is welded. It is a schematic plan view. It is a sectional side view which shows a special jig with a new end plate member similarly. It is a front view showing a special jig with a new end plate member. It is a sectional side view of the principal part which shows the state which welded the adjacent new end plate members similarly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In this embodiment, the present invention is applied to a case where the plenum chamber (end plate portion) inside the regenerator plenum head portion of the fluid catalytic cracking apparatus is partially updated.
FIG. 1 is a cross-sectional view showing the main part of the plenum head, and FIG. 2 is a schematic plan view of a plenum chamber (end plate part) 1.
As shown in FIG. 1, a plenum chamber (end plate portion) 1 is provided inside the plenum head. The end plate portion 1 has a substantially spherical shape convex downward and is formed in a circular shape in plan view. As shown in FIG. 2, the end plate portion main body 2 having a circular shape in plan view and the outer side of the end plate portion main body 2 And a knuckle portion 3 having an annular shape in plan view. In addition, the radius of curvature of the knuckle portion 3 is smaller than the radius of curvature of the end plate portion body 2 in a cross-sectional view of the end plate portion 1.
The end plate part main body 2 is composed of a central disk part 4 and an annular part 5 outside the disk part 4. Further, the outer peripheral edge portion of the knuckle portion 3 is welded to the inner peripheral surface of the body portion 6.

In the present embodiment, a partial update method of the end plate portion 1 will be described as a portion 5 to be updated with the annular portion 5 inside the knuckle portion 3 and outside the disc portion 4.
In the partial updating method of the end plate portion 1, a cutting step for partially cutting the portion (ring portion) 5 to be updated in the circumferential direction, and a fan-shaped new end plate member 10 is attached to the opening generated by the cutting. By repeating the new end plate member attaching step, a part of the end plate portion 1 (ring portion 5) is updated.

That is, first, as shown in FIG. 3A, cutting lines L1 to L6 that divide the annular portion 5 into six equal parts in the circumferential direction in plan view are determined. The cutting lines L <b> 1 to L <b> 6 are formed, for example, when an operator rides on the annular part 5 of the end plate part 1 and draws a line on the surface of the annular part 5.
Next, a portion between the cutting line L1 and the cutting line L2 and a portion between the cutting line L4 and the cutting line L5 are excised. That is, the part (annular part) 5 to be updated is partially excised so as to be diagonal to the end plate part 1 (excision process).
For excision, the cutting line L1, L2, the inner peripheral edge of the annular part 5 between the outer peripheral side ends of the cutting lines L1, L2, and the annular part 5 between the inner peripheral side ends of the cutting lines L1, L2 The outer peripheral edge of the ring portion 5 is cut by fusing, etc., and the fan-shaped portion remaining after cutting is removed, and the inner peripheral edge of the annular portion 5 between the outer peripheral side ends of the cutting lines L4, L5 and the cutting lines L4, L5 and What is necessary is just to cut | disconnect the outer periphery of the annular part 5 between the inner peripheral side edge parts of the cutting lines L4 and L5 by fusion | melting etc., and remove the fan-shaped part which remained after cut | disconnecting.

Next, the fan-shaped new end plate members 10 (10A1 and 10A2) are respectively attached to the two fan-shaped openings 11a and 11a generated by excision as follows (new end plate member mounting step). The attached new end plate member 10 (10A1, 10A2) is hatched. Similarly, in the following description, the attached new end plate member 10 is hatched.
To attach the new end plate member 10 (10A1, 10A2) to the openings 11a, 11a, the new end plate member 10 (10A1, 10A2) is illustrated from the support portion 7 (see FIG. 1) provided on the top of the plenum head. The inner peripheral edge of the new end plate member 10 (10A1, 10A2) is welded to the outer peripheral edge of the disc portion 4, and the new end plate member 10 (10A1, 10A1, 10A1, 10A2) is welded to the opening 11a, 11a. The outer peripheral edge of 10A2) is welded to the inner peripheral edge of the knuckle part 3. The weld line resulting from this welding is indicated by a bold line. Similarly, also in the following description, the weld line by welding is shown by the thick line.

  The cutting process and the new end plate member mounting process as described above are performed by the knuckle part 3, the disk part 4, and the part to be updated that has not been cut (the part between the cutting line L2 and the cutting line L4 and the cutting line L5. The portion between the line L1) can be used as a work floor.

  Next, a portion between the cutting line L2 and the cutting line L3 and a portion between the cutting line L5 and the cutting line L6 are excised. That is, the part (annular part) 5 to be updated is partially excised so as to be diagonal to the end plate part 1 (excision process). For cutting, since the cutting lines L2 and L5 have already been cut, the inner peripheral edge of the annular portion 5 between the cutting line L3, the outer peripheral side ends of the cutting lines L2 and L3, and the inside of the cutting lines L2 and L3 The outer peripheral edge of the annular portion 5 between the peripheral end portions is cut by fusing, etc., and the fan-shaped portion remaining after the cutting is removed, and between the outer peripheral end portions of the cutting lines L6 and L5, L6. What is necessary is just to cut | disconnect the outer periphery of the annular ring part 5 between the inner peripheral edge of a certain annular part 5 and the inner peripheral side edge part of the cutting lines L5 and L6 by fusion | melting etc., and remove the fan-shaped part which was cut | disconnected. .

Next, as shown in FIG. 3B, the fan-shaped new end plate members 10 (10B1 and 10B2) are respectively attached to the two fan-shaped openings 11a and 11a generated by the excision (new end plate member attaching step). ).
In order to attach the new end plate member 10 (10B1, 10B2) to the openings 11a, 11a, the new end plate member 10 (10B1, 10B2) is suspended from the support portion 7 (see FIG. 1) with a wire (not shown) to open the openings 11a, After fitting into 11a, as shown in FIG.3 (c), while welding the inner peripheral part of the new end plate member 10 (10B1, 10B2) to the outer periphery part of the disc part 4, new end plate member 10 (10B1) , 10B2) is welded to the inner peripheral edge of the knuckle part 3.

Further, the new end plate member 10 (10B1, 10B2) and the new end plate member 10 (10A1, 10A2) previously attached are welded, but before that, as shown in FIG. A groove surface 10a is formed on each of the weld ends of the members 10 and 10, and a special jig 20 is prepared.
The groove surfaces 10a and 10a are formed in a V-shaped cross section in a state in which the new end plate members 10 and 10 are brought into contact with each other, and the angle formed by the groove surfaces 10a and 10a is 60 °. The groove surface 10a may be formed in advance on the new end plate member 10 in a factory or the like, or may be formed on the new end plate member 10 in the field.

As shown in FIGS. 4 and 5, the special jig 20 includes a partition portion 21, a support portion 22, and an insertion member 23.
The partition portion 21 is interposed between two new end plate members 10 and 10 adjacent in the circumferential direction, and is formed in a rectangular plate shape having a thickness of about 3 mm.
The support portion 22 is provided at a lower end portion of the partition portion 21 at a right angle and integrally with the partition portion 21, and is formed in a rectangular plate shape having substantially the same thickness as the partition portion 21, and two new end plate members 10. , 10 is supported.
The insertion member 23 is formed in a truncated cone shape, and is inserted into a through hole 21 a formed in the partition portion 21. In the inserted state, the insertion member 23 is in contact with the upper surfaces of the two new end plate members 10, 10. It comes to touch.

When the two new end plate members 10 and 10 are welded to each other, the partition portion 21 of the special jig 20 is inserted between the groove surfaces 10a and 10a from below, and the special jig 20 is interposed. The lower surfaces of the two new end plate members 10 and 10 are supported by the support portion 22. In this state, since the lower edge portions of the groove surfaces 10a and 10a are in contact with the partition portion 21, the groove width (distance between the groove surfaces 10a and 10a) is kept uniform.
Further, the insertion member 23 is inserted into the through hole 21 a formed in the partition portion 21 and comes into contact with the upper surfaces of the two new end plate members 10 and 10. Accordingly, the abutting portion of the new end plate members 10 and 10 is held so as to be sandwiched from above and below by the insertion member 23 and the support portion 22.

As shown in FIG. 3B, such a special jig 20 has a plurality of locations (FIG. 3B) along the line on the butting line where the two new end plate members 10 and 10 are butted at predetermined intervals. ) In two places). The number of special jigs 20 may be set as appropriate depending on the size (diameter) of the end plate portion 1.
By installing the special jig 20 in this way, the two new end plate members 10 and 10 are arranged substantially flush with each other, and the groove width of the weld end is kept uniform.
Then, as shown in FIGS. 3C and 6, the two new end plate members 10 and 10 are welded to each other by pouring the weld metal M between the groove surfaces 10 a and 10 a.

In addition, although the part in which the special jig 20 is installed cannot be welded, the special jig 20 is removed after pouring the weld metal M between the groove surfaces 10a and 10a other than the area where the special jig 20 is installed. The welding can be performed by pouring the weld metal M between the groove surfaces 10a, 10a of the portion where the special jig 20 has been installed.
The special jig 20 can be easily removed by pulling out the insertion member 23 from the through hole 21a of the partition portion 21.

  The excision process and the new end plate member attaching process as described above include the knuckle part 3, the disk part 4, the part to be updated that has not been excised (the part between the cutting line L3 and the cutting line L4 and the cutting lines L6 and L1). And the updated part (new end plate members 10A1 and 10A2) can be used as a work floor.

Further, before welding the two new end plate members 10, 10, the second new end plate member 10 (10B1, 10B2) was welded to the disk portion 4 and the knuckle portion 3, but instead of this, A plurality of special jigs 20 are installed at predetermined intervals along the circumferential direction at the abutting portion between the inner peripheral edge portion of the first new end plate member 10 (10B1, 10B2) and the outer peripheral edge portion of the disk portion 4, and the new end plate By installing a plurality of special jigs 20 at predetermined intervals along the circumferential direction at the abutting portion between the outer peripheral edge portion of the member 10 (10B1, 10B2) and the inner peripheral edge portion of the knuckle portion 3, the new end plate member 10 (10B1) is provided. 10B2), the new end plate member 10 (10B1, 10B2) may be welded to the disk portion 4 and the knuckle portion 3, and the two new end plate members 10, 10 may be welded to each other.
Further, the special jig 20 is replaced with the new end plate member 10 (10B1, 10B2) and the existing part to be updated adjacent to the cutting lines L3, L6 (as will be described later, the existing part is the new end plate member 10C1, 10C2). The special jig 20 may be installed at the abutting portion with the new jig plate member 10 (10B1, 10B2). In this way, the new end plate member 10 (10B1, 10B2) may be supported (temporarily supported) by the special jig 20, and then welded.
Also in such welding work, a groove surface is formed at the weld end portion of the new end plate member 10 and the knuckle portion 3 and the disc portion 4 in the same manner as the groove surface 10a.

  Next, as shown in FIG. 3C, a portion between the cutting line L3 and the cutting line L4 and a portion between the cutting line L6 and the cutting line L1 are excised. That is, the part (annular part) 5 to be updated is partially excised so as to be diagonal to the end plate part 1 (excision process). For cutting, since the cutting lines L3 and L4 and the cutting lines L6 and L1 have already been cut, the inner peripheral edge of the annular portion 5 and the cutting lines L3 and L4 between the outer peripheral ends of the cutting lines L3 and L4. The outer peripheral edge of the annular portion 5 between the inner peripheral side ends of the ring is cut by fusing, etc., and the fan-shaped portion remaining after the cutting is removed, and the circle between the outer peripheral side ends of the cutting lines L6, L1 What is necessary is just to cut | disconnect the outer periphery of the annular ring part 5 between the inner periphery of the ring part 5 and the inner peripheral side edge part of the cutting lines L6 and L1 by fusing etc., and remove the fan-shaped part which remained after cut | disconnecting.

Next, as shown in FIG. 3D, the fan-shaped new end plate members 10 (10C1 and 10C2) are respectively attached to the two fan-shaped openings 11a and 11a generated by the excision (new end plate member mounting step). ).
In order to attach the new end plate member 10 (10C1, 10C2) to the openings 11a, 11a, the new end plate member 10 (10C1, 10C2) is suspended from the support portion 7 (see FIG. 1) with a wire (not shown) to the opening 11a. After the fitting, as shown in FIG. 3E, the inner peripheral edge of the new end plate member 10 (10C1, 10C2) is welded to the outer peripheral edge of the disk portion 4, and the new end plate member 10 (10C1, 10C2) ) Is welded to the inner peripheral edge of the knuckle portion 3.

  Further, the new end plate member 10 (10C1) and the previously attached new end plate member 10 (10B1, 10A2) are welded, and the new end plate member 10 (10C2) and the new end plate member 10 (10B2, 10A1) previously attached are welded. ) And weld. In this welding, a special jig 20 is prepared in the same manner as described above, and the special jig 20 is placed on the butt line where the new end plate members 10 and 10 are butted as shown in FIG. A plurality of places (two places in FIG. 3D) are installed along the line at predetermined intervals.

By installing the special jig 20 in this way, the three new end plate members 10B1, 10C1, and 10A2 are arranged substantially flush with each other, and the groove width of the weld end is kept uniform. Similarly, the three new end plate members 10B2, 10C2, and 10A1 are arranged substantially flush with each other, and the groove width of the weld end is kept uniform.
And as shown in FIG.3 (e) and FIG. 6, the new end plate members 10 and 10 are welded by pouring the welding metal M between groove face 10a, 10a.
In addition, although the part in which the special jig 20 is installed cannot be welded, the special jig 20 is removed after pouring the weld metal M between the groove surfaces 10a and 10a other than the area where the special jig 20 is installed. The welding can be performed by pouring the weld metal M between the groove surfaces 10a, 10a of the portion where the special jig 20 has been installed.

  In the cutting process and the new end plate member attaching step as described above, the knuckle portion 3, the disc portion 4, and the updated portions (new end plate members 10A1, 10A2, 10B1, and 10B2) can be performed as work floors.

  Before welding the new end plate members 10 and 10, the third new end plate member 10 (10C1 and 10C2) was welded to the disk portion 4 and the knuckle portion 3, but instead, the third end plate member 10 and 10 is welded to the knuckle portion 3. A plurality of special jigs 20 are installed at predetermined intervals along the circumferential direction at the abutting portion between the inner peripheral edge portion of the new end plate member 10 (10C1, 10C2) and the outer peripheral edge portion of the disk portion 4, and the new end plate member 10 By installing a plurality of special jigs 20 at predetermined intervals along the circumferential direction at the abutting portion between the outer peripheral edge portion of (10C1, 10C2) and the inner peripheral edge portion of the knuckle portion 3, the new end plate member 10 (10C1, 10C2) is provided. ), The new end plate member 10 (10C1, 10C2) is welded to the disk portion 4 and the knuckle portion 3, and the new end plate members 10, 10 (the new end plate member 10C1 and the new end plate member 10B1). 10A2 What happened, and new end plate and if members 10C2 and the new end plate member 10B2,10A1) may be welded.

When it is necessary to update the disc part 4 after attaching all the new end plate members 10 to be updated, the disc part 4 is excised and excised as shown in FIGS. 3 (e) and 3 (f). The new disk member 14 is attached to the opening 4a generated by this.
In order to attach the new disk member 14 to the opening 4a, the new disk member 14 is suspended from the support portion 7 (see FIG. 1) with a wire (not shown) and fitted into the opening 4a. The peripheral edge is welded to the inner peripheral edge of the opening 4a.
In this way, when the deformation of the disk part 4 becomes large and needs to be updated, the disk part 4 can be easily updated by attaching the new disk member 14 to the opening 4a generated by cutting the disk part 4 Can be done.

  The cutting process of the disk part 4 and the attaching process of the new disk member 14 are performed on the knuckle part 3, the disk part 4, and the updated part (new end plate members 10A1, 10A2, 10B1, 10B2, 10C1, 10C2). Can be used as a floor.

As described above, according to the present embodiment, the excision step of partially excising the portion to be updated (annular portion 5) inside the knuckle portion 3 and outside the disc portion 4 in the circumferential direction; Since a part of the end plate part 1 is renewed by repeating the new end plate member attaching step for attaching the fan-shaped new end plate member 10 to the opening 11a generated by the excision, the end plate is reduced in a short construction period and at a low construction cost. Part 1 can be partially updated. That is, since the part to be updated is replaced with a new new end plate member 10 in the circumferential direction one after another, a new end plate unit 1 is obtained, so that the updating operation can be performed without removing the entire container. Therefore, the construction period can be shortened and the construction cost can be reduced.
Further, since the knuckle part 3, the disk part 4, the part to be updated that has not been excised, and the updated new end plate member 10 can be excised and welded using the work floor, there is no need to separately assemble a scaffold. Can be easily updated.

  In the excision process, the part to be updated is partially excised so as to be opposite to the end of the end plate part 1, and in the new end plate member mounting step, the two end plates 11a and 11a generated by the excision are respectively provided with the new end plate. Since the member 10 is attached, the balance of the section modulus in the circumferential direction of the end plate part 1 is good and the strength is stable in a state where both the openings 11a and 11a are generated.

Further, the special jig 20 includes a partition portion 21, a support portion 22, and an insertion member 23, and when performing a partial update method for the end plate portion 1, between the two new end plate members 10, 10 adjacent in the circumferential direction. In addition to interposing the partition portion 21, the support portion 22 supports the lower surfaces of the two new end plate members 10, 10, and further, the insertion member 23 is inserted into the through hole 21 a formed in the partition portion 21, thereby By abutting on the upper surfaces of the new end plate members 10, 10, the two new end plate members 10, 10 can be held by the partition portion 21 with a predetermined gap so as to be sandwiched between the insertion member 23 and the support portion 22.
Therefore, by forming the groove surfaces 10a and 10a at the weld end portions of the two new end plate members 10 and 10, respectively, the groove width can be kept uniform. 10 welding operations can be stably performed.

In the present embodiment, in the excision step, the two openings 11a generated by partly excising and excising the part to be updated (the annular part 5) so as to be diagonal to the end plate part 1, Although the new end plate member 10 is attached to each 11a, the present invention is not limited to this.
For example, the part to be updated (annular part 5) may be partially excised sequentially in the circumferential direction, and the new end plate member 10 may be attached to the excised opening, or the part to be updated (annular part 5). ) May be partially excised at a predetermined interval in the circumferential direction, and the new end plate member 10 may be attached to the excised opening. In short, the knuckle part 3, the disk part 4, the part to be updated that has not been excised, and the part to be updated (annular part 5) so that the updated new panel member 10 can be used as a work floor. And a new end plate member may be attached to the opening produced by the excision.
Moreover, in this Embodiment, although the whole ring part 5 inside the knuckle part 3 and the outer side from the disk part 4 was updated, this invention is not limited to this. For example, when a part of the annular part 5 is corroded or deformed, it is only necessary to update a part thereof, and the disk part 4 may also be updated as described in the present embodiment. Although not described in the present embodiment, the knuckle unit 3 may also be updated.

  In the present embodiment, the case where the plenum chamber (end plate part) inside the regenerator plenum head part of the heavy oil fluid catalytic cracking apparatus is partially updated has been described as an example. The present invention can also be applied to a case where the upper end plate portion and the upper end portion of the other container are partially updated.

DESCRIPTION OF SYMBOLS 1 End plate part 2 End plate body 3 Knuckle part 4 Disk part 4a Opening 5 Ring part (part which should be updated)
10 (10A1, 10A2, 10B1, 10B2, 10C1, 10C2) New end plate member 11a Opening 14 New disc member 20 Special jig 21 Partition part 22 Support part 23 Insertion member

Claims (5)

A method of renewing at least a part of an end plate part of a container,
When the outer peripheral side of the end plate part is a knuckle part and the center side is a disk part,
A resection process for partially resecting a portion to be renewed inside the knuckle portion and outside the disk portion in the circumferential direction, and a new end plate member for attaching a fan-shaped end plate member to the opening generated by the resection A method for partially updating a mirror plate portion, wherein at least a part of the mirror plate portion is updated by repeating the mounting step. In the excision step, the part to be updated is partially excised so as to be a diagonal of the end plate part,
2. The method for partially updating an end plate part according to claim 1, wherein, in the new end plate member attaching step, the new end plate member is attached to each of two openings generated by excision.   The part of the end plate part according to claim 1 or 2, wherein after attaching all the new end plate members to be updated, the disc part is excised, and the new disc member is attached to the opening generated by the excision. Update method. A special jig used in the partial updating method of the end plate part according to any one of claims 1 to 3,
A partition that is interposed between two end panel members adjacent in the circumferential direction;
A support part provided at the lower end of the partition part to support the lower surfaces of the two new end plate members;
A special jig comprising: an insertion member that is inserted into a through-hole formed in the partition portion and contacts the upper surfaces of the two new end plate members. A special jig according to claim 4 is prepared, and a groove surface is formed on each of the weld end portions of the two new end plate members,
The partition portion of the special jig is interposed between the groove surfaces, the lower surfaces of the two new end plate members are supported by the support portion of the special jig, and the insertion member of the special jig is further separated from the partition surface. 4. The method of partially updating the end plate portion according to claim 1, wherein the end plate portion is inserted into a through-hole formed in the portion and contacts the upper surfaces of the two new end plate members. 5.

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