JPH11141853A - Corrosion-resistant steel plate lining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To regenerate a lining function by leaving the old lining of the inner wall surface or the like of a stack to efficiently line the surface with corrosion-resistant steel plates. SOLUTION: In a corrosion-resistant steel plate lining method, the upper edge part of each unit corrosion-resistant steel plate 101 and 102 in the condition of a horizontal row that goes along the wall surface of a lining 40 is supported by a stud bolt, and then each edge part in the horizontal direction of each unit corrosion-resistant steel plate 101 and 102 is provided with a welded bond mutually. At a position which is located downward at a predetermined interval 14, each of the other unit corrosion-resistant steel plates 104 and 105 is put into the condition of the horizontal row, and then the desired places of the intermediate part of each plate surface are mounted to a base steel plate 50 by a mounting means, in such a manner that the displacement in the direction of the same plate surface is permitted. After that, they are provided with a welded bond mutually, and then each unit corrosion- resistant steel plate 101 and 102 that are supported in the condition of the upper side of horizontal row and each unit corrosion-resistant steel plate 104 and 105 that are mounted in the condition of the lower side of horizontal row are provided with a welded bond mutually through connecting plates 11a and 11b, which are capable of expansion displacement, so that the lining with the corrosion-resistant steel plates is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a method for lining a corrosion-resistant steel sheet on an old inorganic lining surface of a steel chimney, for example, instead of renewing the inorganic lining applied to the wall surface such as the inner wall surface of the chimney. The present invention relates to a method for lining corrosion-resistant steel sheets.

[0002]

2. Description of the Related Art FIG. 11 is a vertical sectional view of a main part showing a conventional work of updating an inorganic lining on a wall surface.
FIG. 4 is a vertical sectional view of a main part showing another example of the conventional work of updating the inorganic lining on the wall surface.

Conventionally, for example, for the inner surface of a steel chimney,
An inorganic lining material is applied to the inner surface by spraying gannite or attaching a brick or an anti-fossil block.

That is, as shown in FIG. 11, for example, stud bolts 51 are fixed to the inner surface of a chimney tube body 50 made of steel with a certain interval between them, and a vertical streak 52, a horizontal streak 53 and The laths 54 are attached, and these are used as reinforcing cores along the inner surface of the
5 is sprayed so as to have a predetermined thickness.

As shown in FIG. 12, for example, a back joint material 56 and a joint material 57 extending in the vertical and horizontal directions are provided on a chimney cylinder body 50.
Is used as an adhesive, and a brick or anti-fossil block 58 of a predetermined thickness is stuck.

[0006] The inorganic lining as described above is 10
After more than a year, the lining material deteriorates, the lining material cracks or peels off, rust occurs on the base steel sheet, and the lining material peels off from the wall with soot and scatters, causing pollution problems Become like For this reason, conventionally, these old linings have been stripped using, for example, a rock drill 59 or the like, and then the lining has been updated by a method of replacing a new lining material in a portion where the old lining has been stripped off. .

[0007]

In the above-described conventional lining replacement, if the lining-stacked chimney is, for example, a boiler chimney, the boiler main body, for example, has a two-month interval of one to two years. It is required to be performed during the period of regular repairs, but the old lining material is removed, the damaged stud bolts 51 and the vertical bars 5
2. It takes time for each process such as replacement of the horizontal metal 53, replacement of the lath 54, and spraying or sticking of the lining material.
Within a regular repair period of about one month, the lining can be renewed only in a very slight range, for example, about 30 to 35 m. For this reason, when replacing and renewing an old lining using the period of regular repair of the boiler body, it takes several years to replace the lining at the full height of the chimney.

In order to reproduce the function of the old lining as described above in a short time, instead of completely replacing the old lining, the lining function is reproduced by lining the corrosion-resistant steel sheet on the surface while leaving the old lining. Although a method for causing the corrosion-resistant steel sheet to be attached, assembled, supported, joined, and the like has been studied, no satisfactory method has been considered yet.

Therefore, the present invention includes the steps of attaching, assembling, supporting, and joining the corrosion-resistant steel plate to the lining surface when regenerating the lining function by lining the surface with a corrosion-resistant steel plate while keeping the old lining. It is an object of the present invention to provide a method for lining a corrosion-resistant steel sheet so that the work of lining the corrosion-resistant steel sheet on the lining surface can be performed efficiently.

[0010]

According to the corrosion-resistant steel sheet lining method of the present invention, in order to solve the above-mentioned problems, a corrosion-resistant steel sheet lining is provided on a wall surface of a structure in which a base steel sheet is lined. Corrosion-resistant steel sheet lining method, which has a predetermined dimension in the height direction and has a shape divided into a plurality in the circumferential direction, and is arranged on each unit corrosion-resistant steel sheet arranged in a row along the wall surface. In a state in which the edges are fixed to the base steel plate by welding and supported by stud bolts arranged in a row,
The lateral edges of the unit corrosion-resistant steel plates are welded and joined to each other to unite the unit corrosion-resistant steel plates in a row, and downward from the unit corrosion-resistant steel plates arranged and supported in the same row. At a position separated by a predetermined gap, a plurality of unit corrosion-resistant steel plates are arranged in a row so as to be adjacent to each other, and the lateral edges of the unit corrosion-resistant steel plates are sequentially welded and joined to each other. A required portion of the middle part of the plate surface of each unit corrosion-resistant steel plate is attached to the base steel plate by a mounting means so as to allow displacement in the direction of the plate surface, and each unit corrosion-resistant steel plate is attached to the wall surface. A connection plate that is mutually integrated in a row state and is capable of mutually expanding and contracting each unit corrosion-resistant steel plate supported in the upper row state and each unit corrosion-resistant steel sheet mounted in the lower row state. And then welded to the lower end until the specified number of steps is reached Each unit corrosion-resistant steel plate mounted in a lower row state is welded to each unit corrosion-resistant steel plate mounted in a row state via a connection plate that can expand and contract, and is welded to each unit. The lining is made of corrosion-resistant steel.

According to the corrosion-resistant steel plate lining method of the present invention, the stud bolt supporting the unit corrosion-resistant steel plate and the unit corrosion-resistant steel plate are allowed to displace in the direction of the plate surface with respect to the base steel plate. In fixing the mounting means to the base steel plate on the wall surface, the lining of the wall surface is removed, and the stud bolt and the mounting means are fixed to the base steel plate of the hanging part of the lining. Mortar,
It is backfilled with a filler such as a sealing material.

Further, according to the corrosion-resistant steel plate lining method of the present invention, the stud bolt supporting the unit corrosion-resistant steel plate and the unit corrosion-resistant steel plate are allowed to displace in the direction of the plate surface with respect to the base steel plate. Each head of the mounting means to be mounted is covered with a corrosion-resistant steel plate cap.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a main part showing an outline of a corrosion-resistant steel sheet lining structure by a corrosion-resistant steel sheet lining method according to an embodiment of the present invention, and FIG. 2 is a main part viewed along line II-II in FIG. FIG. 3 is a perspective view of an essential part showing an example of a structure different from that of FIG. 1 in part III of FIG. 1. FIG. 4 is an essential part showing an example of a structure of part IV in FIG. 2 different from FIG. FIG.

1 and 2, a chimney cylinder body 50 made of steel is used.
Is a gunite 55 sprayed by a conventional spraying operation.
And an old lining wall 40 such as a brick or anti-fossil block 58 stuck by a sticking operation.
On the old lining wall 40, predetermined height dimension,
For example, the lining wall 40 is divided into a plurality of pieces at a constant height of about 3 m in the circumferential direction.
Unit corrosion steel 10 ₁ to 10 ₈ of about mm are arranged. In FIG. 1, the divided unit corrosion-resistant steel plates 10 ₁ to 10 ₁
0 ₈ ... are arranged in a plurality of stages in a grid pattern as an example.

When each unit corrosion-resistant steel plate 10 ₁ , 10 ₂ is the upper unit corrosion-resistant steel plate, each unit corrosion-resistant steel plate 10 on the upper side
₁ , 10 ₂ and each unit corrosion-resistant steel plate 10 ₄ , 10 ₅ below it
And the unit corrosion-resistant steel plates 10 ₄ , 10 ₅
When each is the upper unit corrosion-resistant steel plate, each unit corrosion-resistant steel plate 10 ₄ , 10 ₅ on the upper side and each unit corrosion-resistant steel plate 1 on the lower side
0 ₇ , 10 ₈ , a connection plate 11 made of two types of large and small corrosion-resistant steel plates having a mountain-shaped cross-section, straddling the upper unit corrosion-resistant steel plates and the lower unit corrosion-resistant steel plates. _a and 11 _b are
Each is welded and joined.

A plurality of unit corrosion-resistant steel plates 10 ₁ to 10 ₃ , 10 ₄ to ₁ shown in FIGS.
0 _{6, 107 to 109,} respectively circumferential edge portion of ... is being superimposed to each other are continuously welded, assembled in a ring shape as a whole. And the upper edge side of the uppermost each unit corrosion steel 10 ₁ to 10 _3, such as below 10
(1) and the plate material informal Noh play plate 10 _s and the like made of corrosion steel as shown in FIG. 10 (2), is welded.

As shown in FIG. 3, a plurality of unit corrosion-resistant steel plates 10 ₁ to 10 ₃ , 10
_The opposite edges ₄ to 10 ₆ , 10 ₇ to 10 ₉ ,... Are provided with bonding ribs 13 on one side in advance, and are opposed to each other via the ribs 13. The two edges may be indirectly welded and connected to integrate the two.

As shown in FIGS. 1 and 2, each of the unit corrosion-resistant steel plates 101 to ₁ in the upper stage connected in a ring shape for each stage.
0 ₃ and the lower the unit corrosion steel 10 ₄ -10 ₆ or each unit corrosion steel 10 ₄ -10 ₆ and the lower the unit corrosion steel _{107 to 109,} etc. of the upper, the fixed gap in the vertical direction to each other 14
With the stud bolt described later.
And the lining wall 40.

In FIG. 1 and FIG. 2, two types of connection plates 11a and 11b, large and small, are arranged continuously in the lateral direction with their edges alternately overlapped. Then, each connection plate 11a, 1
In a state in which the edge portions of the upper and lower unit corrosion-resistant steel plates 1 ₁ to 10 ₃ and the lower unit of each unit corrosion-resistant steel plate 1
0 ₄ to 10 ₆ , or each unit corrosion-resistant steel plate at the upper stage 10 ₄ to 1
0 of ₆ and each unit corrosion steel _{107 to 109,} etc. in the lower, so cross the gap 14 between the upper and lower each unit corrosion steel 10 ₁ to 10 _9, i.e. the connecting plates 11a, 11b are vertically and astride on each unit corrosion steel 10 ₁ to 10 _9, which is respectively arranged, the connecting plate 11a, 11b and the unit corrosion steel 1
Overlapping portions with O ₁ to 10 ₉ , and connection plates 11 a and 11 b
Are overlapped with each other by continuous welding.

As shown in FIG. 1 and FIG.
0, for example, 25 to 30 m of the chimney body 50
30c in the circumferential direction for each reinforced support node at each height
Stud bolts 15 for supporting the lining corrosion-resistant steel plate are attached by stud welding at intervals of about m pitches.
The stud bolts 15 are each positioned at a height corresponding to the interval in the height direction between the rows of the upper and lower stud bolts 15, and each unit corrosion-resistant steel plate 10 ₁ to 10 ₃ connected in a ring shape by the above-described method.
And is fixedly connected to the uppermost end of the tubular lining unit T, which supports the weight of the tubular lining unit T.

In FIGS. 1 and 2, when the stud bolt 15 is mounted on the base steel plate of the chimney cylinder body 50, a digging hole 15a for mounting the stud bolt 15 is formed in the lining 40. This excavation hole 15a is refilled with a filler 40a such as a mortar or a sealing material after the stud bolt 15 is attached. On the corrosion-resistant steel plate 10,
An opening 10a is formed corresponding to the excavation hole 15a.
On this opening 10a, and polymerizing the polymerizable plate 15b having passed through the stud bolt 15 in the center, the peripheral portion of the polymer plate 15b, continuously welded onto the corresponding corrosion steel sheet 10 ₁ to 10 _3. A nut 15c is screwed to the stud bolt 15 so that the overlapped plate 15b and the corresponding unit corrosion-resistant steel plates 10 ₁ to 10 ₃ are pressed and fixed to the old lining 40 surface side. Then, a cap 15d made of a corrosion-resistant steel plate is covered so as to cover the end of the bolt 15 and the nut 15c, and the cap 15d is fixed to the surface of the superposed plate 15b by continuous welding.

As shown in FIG. 1 and FIG.
0 is an interval of about 2 m pitch in the circumferential direction in accordance with the height at which the intermediate portion of each of the unit corrosion-resistant steel plates 10 ₄ to 10 ₉ of the second stage and below of the cylindrical lining unit body T of a predetermined height is located. in, tap bolts 16 for pressing the unit corrosion steel 10 ₄ -10 ₉
Are fixedly attached by welding. As shown in FIG. 4, when the strength of the old lining 40 is maintained, the holding bolt 16 is embedded in the old lining 40 instead of being welded and fixed to the base steel plate of the chimney cylinder body 50. It may be fixed and provided.

In FIG. 2 and FIG.
6 is formed in the lining 40 so that the holding bolt 16 can be formed using the drilling hole 16a.
Is attached to the base steel plate of the chimney cylinder body 50,
Filler 40a such as mortar or sealing material 6a
Refill. Drilled hole 1 per unit corrosion resistant steel plate 10 ₄ -10 ₉
An opening 10b having a size corresponding to the size of the opening 1b is formed.
The overlapped plate 16b having the holding bolt 16 penetrated in the center is overlapped with the 0b portion. And to the holding bolt 16,
A nut 16c that presses the overlapping plate 16b and slidably restrains an intermediate portion of each of the corrosion-resistant steel plates 10 ₄ to 10 ₉ is screwed. Further, by covering the end of the bolt 16 and the nut 16c,
A cap 16d made of a corrosion-resistant steel plate is fixed on the surface of the corrosion-resistant steel plates 10 ₄ to 10 ₉ by continuous welding at an outer peripheral portion outside the overlapped plate 16b.

FIG. 5 is an exploded view of an essential part showing an arrangement example of a corrosion-resistant steel sheet different from FIG. 1 by the corrosion-resistant steel sheet lining method according to one embodiment of the present invention, and FIG. 6 is VI-VI of FIG. FIG. 7 is a plan view showing the circumferential splitting along the line, and FIG. 7 is VII-V of FIG.
FIG. 2 is a plan view showing circumferential plate splitting viewed along line II.

First, in FIG. 5, each unit corrosion-resistant steel plate 10 ₁
〜１０10 _n are lined in a staggered arrangement. Vertical line~
Indicates the azimuth position of the inner surface of the chimney cylinder body 50 at every 90 ° in the circumferential direction. In FIG. 5, each corrosion-resistant steel plate having a height of 10 steps is defined as one tubular lining unit T, and a stud bolt 15 for supporting the tubular lining unit T is provided at the uppermost end of the inner surface of the chimney barrel 50. Install in a row. The nine-stage unit corrosion-resistant steel plates 10 _{4 to} 10 n connected to the lower side of the unit corrosion-resistant steel plates 10 ₁ to 10 _{3 at} the uppermost stage correspond to the chimney tube body corresponding to the middle part of the height of each of the unit corrosion-resistant steel plates 10 _{4 to} 10 n. 50
The position of the inner surface of, and disposed retainer bolt 16 in rows, these holding bolts 16, each unit corrosion steel 10 ₄
-10n are constrained and supported so that they can slide along the surface of the old lining 40.

FIGS. 6 and 7 show the odd-numbered and even-numbered plate split arrangements in the tubular lining unit T of FIG.
Odd-numbered stages of corrosion steel _{107 to 109} along the VI~VI line in FIG. 5,
.., As shown in FIG. 6, the azimuth line is divided into three in the circumferential direction with one division line to obtain three unit corrosion-resistant steel sheets 10 n. As shown in FIG. 7, the even-numbered corrosion-resistant steel plates 10 ₁₆ to 10 ₁₈ along the lines VII to VII in FIG. Three unit corrosion-resistant steel sheets 1 divided into three parts in the circumferential direction as one dividing line
0n, so that the unit corrosion-resistant steel plates 10n are arranged in a zigzag pattern as a whole. Each of the unit corrosion-resistant steel plates 10 ₁ to 10 _n , each of the connection plates 11a and 11b, each of the stud bolts 15, and each of the holding bolts 16 may have the same configuration as that shown in FIGS.

FIG. 8 is a flow chart of the corrosion-resistant steel sheet lining method according to one embodiment of the present invention. 8, at the stage of "Installing the member entrance" in step S _1, the member entrance provided in the chimney tube body 50 to be subjected to the functional recovery of the lining, "cylinder gondola step S _2, materials handling facility At the stage of “installation”, after the work gondola and the cargo handling equipment are arranged in the cylinder, from the upper stage to the lower stage of the designed tubular lining unit T, for each stage, in step S ₃ , the inner cylinder supporting point portion lining fishing "→" stud bolt attachment step S ₄ "→ backfill" lining step S ₅ "
→ and performs repeatedly the steps of "the inner cylinder construction with" in step S _6. After you have completed up to step S _6, "in-cylinder gondola, cargo handling equipment removal" of step S ₇ → step S ₈
Work of "cleaning up" of the "carry-in port closed" → step S ₉ is carried out of.

FIGS. 9 (1), 9 (2) and 9 (3)
FIGS. 10 (1), 10 (2), and 10 (1) are main part longitudinal sectional views sequentially showing the steps of installing a corrosion-resistant steel sheet in the corrosion-resistant steel sheet lining method according to one embodiment of the present invention.
(3) is a principal part longitudinal cross-sectional view sequentially showing the construction process of the lining corrosion-resistant steel sheet in the corrosion-resistant steel sheet lining method according to one embodiment of the present invention, following FIG. 9.

The above operations will be described below in the order of steps with reference to FIGS. 9 (1), (2) and (3) and FIGS. 10 (1), (2) and (3). (A) As shown in FIG. 9 (1), the lining of the first inner cylinder support point is a suspension,
And drilling holes 15a for mounting the _{1-10 3} of the stud bolt 15, a groove 10g for embedding the informal Noh play plate 10s are suspended and are of interest. The closing plate 10s may have a shape without an embedded portion such as the groove 10g.

A specific example will be described.
When the hole 15a for mounting the 4 mm stud bolt 15 is formed, the lining 4 is formed by a commonly used coring excavator using a bit having a diameter of 100 mm.
After the surface 0 is cored into a cylindrical shape, the periphery is cut into a tapered shape using a pick or the like and spread. Further, when the groove 10g for embedding of the closing plate 10s is formed, a groove of a required depth is formed on the old lining 40 surface by a rotary cutter having a predetermined width provided with a cutting tip on a circumferential surface. Can be performed in the circumferential direction.

(B) As shown in FIG. 9 (2), the chimney tube body 50 in the excavation hole 15a formed in the surface of the lining 40
Stud bolt 15 is attached to the base steel plate surface by stud welding. (C) As shown in FIG. 9 (3), the excavation hole 15a around the stud-welded stud bolt 15 is backfilled with a filler 40a such as mortar or a sealing material.

The (d) The as shown in FIG. 10 (1), fitted with a unit corrosion steel 10 ₁ aperture 10a bonding the informal Noh play plate 10s to the upper edge to the stud bolt 15, and fitted overlapped polymerization plate 15b, Further, the upper end of the L shape of the closing plate 10s is formed with the groove 1
While held in the 0 g, by tightening the nut 15c, on which is fixed a unit corrosion steel sheet 10 ₁ in the linings 40 face, the periphery of the polymerization plate 15b is joined by continuous welding on the upper surface of the unit corrosion steel 10 _1, the grooves 10g The inside is back-filled with a filler 40a such as a mortar or a sealing material. Then, for the other units corrosion steel 10 ₂ and 10 _3, sequentially, and fixed to a surface of the lining 40 in the same manner, respectively, the groove 10
Filler 40a such as mortar or sealing material in g
Backfilled by, joined to each other by continuous welding an edge portion of the unit corrosion steel sheet 10 ₁ and the unit corrosion steel 10 ₂ fixed earlier. The top of corrosion-resistant steel sheet 10 ₁ to the above work
Tubular old lining 40 of the surface with 10 ₃ lining is formed.

(E) Next, as shown in FIG. 10 (2), the lining of the inner cylinder supporting point returns to the hanging state again. The object to be suspended is an excavation hole 16 for mounting the holding bolt 16 at a position at an intermediate height between the unit corrosion-resistant steel plates 10 ₄ to 10 _{6 at} the mounting positions of the unit corrosion-resistant steel plates 10 ₄ to 10 ₆ at this stage.
Excavation of a. For example, a mounting hole 16a for a holding bolt 16 having a diameter of 10 mm is formed by a coring excavator with a diameter of 60 mm.
A cylindrical excavation is performed using a mm bit. The holding bolt 16 is attached by stud welding to the base steel plate surface of the chimney tube body 50 in the formed cylindrical excavation hole 16a, and the excavation hole 16a is backfilled with a filler 40a such as mortar or a sealing material. Further, the lower edges of the two types of connection plates 11a and 11b are welded to the upper edge of the unit corrosion-resistant steel plate 10 _{4, and} the upper edges of the respective connection plates 11a and 11b are raised away from the lining 40 surface. Opening 1 per unit corrosion resistant steel plate 10 ₄
0b is fitted with the holding bolt 16, the overlapping plate 16b is fitted into the bolt 16, the nut 16c is tightened, and the corrosion-resistant steel plate 10
₄ is slidably held and restrained.

(F) As shown in FIG. 10 (3), the upper edges of the two large and small connection plates 11a and 11b in the state of (e) described above are placed below the upper unit corrosion-resistant steel plates 10 ₁ and 10 ₃ . Continuously welded to the edge and joined. By the same operation, the other unit corrosion-resistant steel plates 10 ₅ and 10 ₆ arranged in the circumferential direction are sequentially restrained at predetermined positions, and are joined to the edges of the unit corrosion-resistant steel plates adjacent in the circumferential direction by welding. The unit corrosion-resistant steel plates are joined by welding via the corresponding connection plates 11a and 11b. The steps (e) to (f) are repeated for each of the third and lower unit corrosion-resistant steel sheets to form the cylindrical lining unit T having the designed number of steps up to the ten-step surface. Here, the connection plates 11a and 11b may be separately carried in and attached after the lower corrosion-resistant steel plate is attached. The lower end of the tenth lined corrosion-resistant steel plate is shown in FIG.
As shown by the dashed line at the upper end of (1), the upper and lower tubular lining units T are joined to each other by welding on the uppermost stage plate 10s of the next tubular lining unit T. .

According to this method, the existing old lining 40 is left in a state where it is shielded by the surface-lined corrosion-resistant steel plates 10 ₁ to 10 n, and performs the heat-insulating function as it is, and the surface-lined corrosion-resistant steel plates 10 _{1 to} 10 n However, it comes into contact with exhaust gas as a lining material and resists corrosion and deterioration due to the exhaust gas. The remaining lining 40 is filled with gas after filling of the lining corrosion-resistant steel plates 10 _{1 to} 10 n by backfilling the bolt mounting holes with a filler 40 a such as mortar or sealing material and mounting the bolt head caps 15 d and 16 d. And the lining surface is always dry, and the lining material hardly deteriorates.

The weight of the lining corrosion-resistant steel plates 10 _{1 to} 10 n is supported by stud bolts 15 arranged in a row at the upper end in each of the plurality of tubular lining units T shown in FIG. Further, at the position of the height of the center of each corrosion steel 10 ₁ to 10n of the lower its plate surface, since it is slidably restrained by the pressing bolt 16 at intervals, each corrosion steel 10 ₁ to 10n by the gas stream Over vibration is prevented.

Each lined corrosion-resistant steel sheet 10 ₁ to 10 due to exhaust gas
The thermal expansion in the height direction of n is absorbed by bending deformation of the chevron-shaped cross sections of the connection plates 11a and 11b. In addition, due to the bending deformation of the angled cross sections of the connection plates 11a and 11b, it is possible to absorb installation errors in the circumferential direction and the height direction during lining work. Further, the vertical movement of the lower lining corrosion-resistant steel plates 10 _{4 to} 10 n having the stud bolt 15 as a fixing point is absorbed by the plate sliding action of the holding bolt 16. As the material of the corrosion-resistant steel plates 10 _{1 to} 10 n, a material according to gas conditions is selected.

The mounting portion of the stud bolt 15 for supporting the tubular lining unit T may cause burning of the surface of the chimney tube body due to stud welding. By selecting a position where the platform is located on the outer surface, the repair painting can be easily performed. Further, in the mounting portion of the holding bolt 16, since the holding bolt has a small diameter, the burning of the paint due to the stud welding does not occur.

Further, according to the method of the present invention, since the existing old lining is left, a large amount of lining waste material is not generated when the lining is renewed. In addition, the consumption of construction water used for hanging the old lining is greatly reduced. In addition, the lining eliminates the generation of noise due to the hanging operation.

In addition, the time required for removing and peeling old linings is greatly reduced, which makes it possible to reduce the construction period by about 40% when constructed under the same construction conditions as compared with the conventional lining replacement method. it can. Moreover, lining cleaning, inspection, and repair after the fact, for example, during the canned period can be easily performed.

[0041]

According to the corrosion-resistant steel sheet lining method of the present invention, the following effects can be obtained. (1) A corrosion-resistant steel sheet lining method for applying a corrosion-resistant steel sheet lining on a wall surface of a structure in which a base steel sheet is lined, and having a predetermined dimension in a height direction and a plurality of pieces in a circumferential direction. The upper edge of each unit corrosion-resistant steel plate having a divided shape and arranged in a row along the wall surface is fixed to the base steel plate by welding and supported by stud bolts arranged in a row, respectively. The lateral edges of the unit corrosion-resistant steel plates are welded and joined to each other to unite the unit corrosion-resistant steel plates in a row, and downward from the unit corrosion-resistant steel plates arranged and supported in the same row. At a position separated by a predetermined gap,
A plurality of unit corrosion-resistant steel plates are arranged in a row so as to be adjacent to each other, and the lateral edges of the unit corrosion-resistant steel plates are sequentially welded and joined to each other while the middle of the plate surface of each unit corrosion-resistant steel plate. A required portion of the part is attached to the base steel sheet by an attachment means so as to allow displacement in the direction of the same sheet surface,
The unit corrosion-resistant steel plates are united with each other in a row along the wall surface, and the unit corrosion-resistant steel plates supported in the upper row and the unit corrosion-resistant steel plates mounted in the lower row are interconnected. The unit corrosion-resistant steel plates attached in the lower row are attached to the unit corrosion-resistant steel plates attached in the lowermost row until the predetermined number of steps is reached by welding and joining through the connecting plate that can be expanded and contracted. Welding is performed via a connecting plate that can be extended and contracted, so that the corrosion-resistant steel plate is lined on the wall of the structure with the above lining. The lining function can be reproduced by lining the lining surface, and the lining work of the corrosion-resistant steel plate on the lining surface including the work of mounting, assembling, supporting and joining the corrosion-resistant steel plate on the lining surface can be performed efficiently. The weight of each corrosion-resistant steel plate is securely supported by stud bolts, and each corrosion-resistant steel plate at the lower stage is slidably restrained by mounting means at the height of the center of the plate surface. In addition to preventing over-vibration, it can also absorb installation errors in the circumferential and height directions during lining work, and the thermal expansion of each unit corrosion-resistant steel plate in the height direction is caused by the expansion and contraction of the connecting plate. Absorbed and the existing old lining is left behind, eliminating the generation of a large amount of lining waste material when renewing the lining, greatly reducing the consumption of construction water used for hanging the old lining, and removing the lining Noise is not generated, the construction period is shortened, and the cleaning, inspection, and repair of the lining afterward become easy (claim 1). (2) mounting means for mounting the stud bolt supporting each unit corrosion-resistant steel plate and the unit corrosion-resistant steel plate to the base steel plate so as to allow displacement in the direction of the plate surface with respect to the base steel plate; In fixing, the stud bolts and the mounting means are fixed to the base steel plate of the hanging portion of the lining by removing the lining of the same wall surface, and then the hanging portion of the lining is filled with a filler such as mortar, sealing material or the like. As it is backfilled, it is possible to regenerate the lining function by lining the corrosion-resistant steel plate on the surface while leaving the old lining, and work such as attaching, assembling, supporting and joining the corrosion-resistant steel plate to the lining surface Lining of corrosion-resistant steel plates on the lining surface, including steel, can be performed efficiently. It is left in a state where it is securely shielded by the corrosion-resistant steel sheet, and acts as a heat insulator as it is, and when it comes in contact with exhaust gas as a lining material of the surface lining corrosion-resistant steel sheet, it can sufficiently resist corrosion and deterioration due to exhaust gas, and is left behind The lining is sufficiently shielded from gas after the lining corrosion-resistant steel sheet is applied, the lining surface is always in a dry state, and the lining material hardly deteriorates (claim 2). (3) Each of the heads of the mounting means for mounting the stud bolt for supporting each of the unit corrosion-resistant steel plates and the unit corrosion-resistant steel plate with respect to the base steel plate so as to allow displacement in the direction of the plate surface. As it is covered with a cap made of stainless steel, it is possible to regenerate the lining function by lining the corrosion-resistant steel sheet on the surface while leaving the old lining, and to attach, assemble, support and join the corrosion-resistant steel sheet to the lining surface It is possible to efficiently perform the lining work of the corrosion-resistant steel plate on the lining surface including the work of the existing, the existing old lining is left in a state that it is securely shielded by the surface lining corrosion-resistant steel plate, and plays the heat insulation function as it is, When it comes in contact with exhaust gas as a surface lining corrosion-resistant steel lining material,
It can sufficiently resist corrosion and deterioration due to exhaust gas,
The remaining lining is sufficiently shielded from gas after construction of the lining corrosion-resistant steel sheet, the lining surface is always in a dry state, and the lining material hardly deteriorates (claim 3).

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part schematically showing a lining structure of a corrosion-resistant steel sheet by a corrosion-resistant steel sheet lining method according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of an essential part taken along line II-II of FIG.

3 is a perspective view of an essential part showing an example of a structure different from that of FIG. 1 in a part III in FIG. 1;

FIG. 4 is a vertical sectional view of an essential part showing an example of a structure different from that of FIG. 2 in an IV part of FIG. 2;

FIG. 5 is a main part developed view showing an example of the arrangement of the corrosion-resistant steel sheet different from FIG. 1 by the corrosion-resistant steel sheet lining method according to one embodiment of the present invention.

FIG. 6 is a plan view showing circumferential splitting along a line VI-VI in FIG. 5;

FIG. 7 is a plan view showing circumferential splitting along a line VII-VII in FIG. 5;

FIG. 8 is a flowchart of a corrosion-resistant steel plate lining method according to one embodiment of the present invention.

FIGS. 9 (1), (2) and (3) are longitudinal sectional views respectively showing the steps of installing a corrosion-resistant steel sheet in the corrosion-resistant steel sheet lining method according to one embodiment of the present invention. FIG.

10 (1), FIG. 2 (2) and FIG.
It is a principal part longitudinal cross-sectional view which shows sequentially the installation process of the corrosion-resistant steel plate lining in the corrosion-resistant steel plate lining method which concerns on one Embodiment of this invention, respectively.

FIG. 11 is a vertical cross-sectional view of a main part showing a conventional operation of updating an inorganic lining on a wall surface.

FIG. 12 is a main part longitudinal sectional view showing another example of the conventional work of updating the inorganic lining on the wall surface.

[Explanation of symbols]

10 ₁ to 10 ₉ units Corrosion-resistant steel plate 10a, 10b Open hole 10g Groove 10s End plate 11a, 11b Connection plate 13 Joining rib 14 Gap 15 Stud bolt 15a Drilled hole 15b Overlay plate 15c Nut 15d Cap 16 Holding bolt 16a Drill hole 16b Weight Plywood 16c Nut 16d Cap 40 Old lining wall 50 Chimney tube body 51 Stud bolt 52 Vertical metal 53 Horizontal metal 54 Lath 55 Ganite 56 Back lining material 57 Joint material 58 Brick or anti-fossil block 59 Rock drilling T Tube lining unit

Claims (3)

[Claims] 1. A corrosion-resistant steel sheet lining method for applying a corrosion-resistant steel sheet lining on a wall surface of a structure in which a base steel sheet is lined, and having a predetermined dimension in a height direction and a circumferential direction. A state in which the upper edges of the unit corrosion-resistant steel plates having a plurality of divided shapes and arranged in a row along the wall surface are supported by stud bolts fixed to the base steel plate by welding and arranged in a row. Then, the respective lateral edges of each of the unit corrosion-resistant steel plates are welded and joined to each other, and the unit corrosion-resistant steel plates are united with each other in a row state, and each of the unit corrosion-resistant steel plates is arranged and supported in the same row. At a position separated by a predetermined gap downward, the plurality of unit corrosion-resistant steel sheets are arranged in a row so as to be adjacent to each other, and the lateral edges of the unit corrosion-resistant steel sheets are sequentially welded and joined to each other. , Each unit is required for the middle part of the corrosion-resistant steel plate surface The parts are attached to the base steel plate by a mounting means so as to allow displacement in the direction of the same plate surface, and the respective unit corrosion-resistant steel plates are integrated with each other in a row along the wall surface, and Each unit corrosion-resistant steel plate supported in a row state and each unit corrosion-resistant steel plate mounted in the lower row state are welded to each other via a connecting plate capable of expanding and contracting each other, and until the predetermined number of steps is reached. A structure in which each unit corrosion-resistant steel plate attached in a lower row state is welded to each unit corrosion-resistant steel plate attached in the lowermost row state via a connection plate that can expand and contract, and the above lining is applied. Corrosion-resistant steel sheet lining, characterized in that a corrosion-resistant steel sheet lining is applied on the wall surface of the steel sheet. 2. The corrosion-resistant steel sheet lining method according to claim 1, wherein the stud bolt supporting each of the unit corrosion-resistant steel sheets and the unit corrosion-resistant steel sheet are displaced in the direction of the plate surface with respect to the base steel sheet. In fixing the mounting means to be mounted in a permissive manner to the base steel plate on the wall surface, the lining of the wall surface is removed, and the stud bolt and the mounting means are fixed to the base steel plate of the lining of the lining. A method for lining a corrosion-resistant steel sheet, characterized in that the hanging part of the lining is backfilled with a filler such as mortar, sealing material or the like. 3. The corrosion-resistant steel sheet lining method according to claim 1, wherein the stud bolt supporting the unit corrosion-resistant steel sheet and the unit corrosion-resistant steel sheet are oriented in a direction of the plate surface with respect to the base steel sheet. A corrosion-resistant steel sheet lining method, wherein each head of the mounting means for mounting so as to allow displacement is covered with a corrosion-resistant steel sheet cap.