JP4415127B2 - Method and apparatus for maintaining and managing partition walls such as pipes - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a maintenance management method and apparatus for a partition wall such as a pipe, and is simple, appropriate, accurate, efficient, and efficient in each part or in general of a single pipe, such as pipe construction and maintenance / inspection. It is an object of the present invention to provide a method and an apparatus that can be efficiently implemented within a short time.
[0002]
[Prior art]
In the case of carrying out various maintenance work at each site and improving the environment, it is necessary to accurately carry out maintenance management within a partition wall such as a pipe line formed by a series of steel plates over a considerable distance. Various methods have been practiced in the past, but it is quite difficult to close the pipes properly with regard to maintenance and management of such pipes under conditions where the inner diameter exceeds 1 m in recent years. In particular, only specific parts are blocked, and drainage (discharge), flooding, washing, and other operations are performed to form safe working conditions, which are carried out in combination with appropriate pouring and draining operations. In other words, the above-described blockage of the pipe line is performed by setting an elastic bag body as an air pack in the pipe line and pressurizing and sealing with pressurized air.
[0003]
Particularly in related facilities such as nuclear reactors in recent times, the working time is limited depending on the degree of exposure, and there is a high possibility of causing a semi-permanent injury to human body or life. Therefore, in such equipment, it is strongly required to perform maintenance with high precision and careful care.
[0004]
[Problems to be solved by the invention]
However, the conventional maintenance management technique as described above has a disadvantage that it requires considerable man-hours and time for maintenance management in a partition wall such as a pipe line. That is, in the prior art as described above, it is indispensable to form a complete blockage of the pipeline, but in order to make such a blockage, it is generally within a considerable length (thickness) range. It is necessary to block the entire area, which requires a large amount of work and inevitably requires a lot of man-hours and time.
[0005]
In particular, pipes such as those described above have recently formed a generally smooth inner surface using a rolled steel sheet or the like, so a closed portion by an air pack method or the like is generally formed on such a smooth inner surface. It is considerably difficult to properly fix the body, and if stable and accurate fixation cannot be obtained, the body itself cannot basically be achieved if it is blocked. In addition, if roughening is performed to obtain an anti-slip function to facilitate fastening, it is natural that sealing and closing of the roughened wall surface become difficult, and in any case, sealing and closing are difficult. It is clear. In order to obtain an effective seal with the air pack, it is necessary to seal within a considerable length range in a partition wall such as a pipe line, and the filling amount of air and the like is large, and it is natural that a considerable man-hour is required. is there. Moreover, the resulting pressure difference is about 0.2 kg / cm2, and it is difficult to do efficient water injection and drainage work with this level of pressure difference. In addition, it is necessary to continuously supply the pressure fluid and to monitor the working state.
[0006]
Even if the pipe is effectively blocked at the target position, it is not easy to pour and drain the closed section within a short time. In other words, even if it can be closed, it is usually difficult to form a pressure difference of 1 kg / cm 2 or more because an effective seal state is not formed. For example, it is effective by pouring water or draining water. Even if it is known that some blockage in the pipeline can be achieved, gas such as air or gas is used for the pouring and drainage, and rapid, efficient and highly accurate pouring and drainage using high pressure differential conditions is achieved. Not easily done. In other words, in order to maintain and manage the pipes as described above, it is necessary to at least close the pipes in a sealed state and create conditions that block the water flow. Even if it can be blocked and shut off, it is inevitable that some liquid or gas leaks, it cannot be processed in a short time, and it can be closed over a long range. In any case, it is common to treat the entire inside of the partition wall for a considerably long distance section, and to fill the entire partition wall with water, pressurize or wash after completion of construction, and test. Therefore, it must be a long process.
[0007]
That is, according to such a conventional method, a considerable amount of water is required at a time for a considerably long section, which is disadvantageous in terms of water resources, and a considerable amount of water is unavoidable. There are disadvantages. Similarly, drainage must be a long-time operation, as is the case with pouring, and is particularly complicated and cumbersome, especially for drainage and absorption after the water level has dropped. It is clear that the process, man-hours and time are required, and the amount of leaked water increases, so that it is gradually forced to work inefficiently.
[0008]
In particular, in nuclear power facilities, the partition walls such as the pipes as described above are often used appropriately according to the respective conditions, thereby preventing leakage of radioactive materials and the like. It is also clear that the above-mentioned facilities have large leaks, have a high inefficiency, and inevitably contaminate the environment due to the dangers associated with radioactive material leaks. It is.
[0009]
[Means for Solving the Problems]
The present invention has repeatedly studied to solve the problems in the prior art as described above, has excellent operability, and has a relatively compact facility to instantaneously obtain an accurate blockage seal in a partition wall such as a pipe, The following is a simple and efficient implementation of maintenance, inspection, construction, and other various operations within the partition walls.
[0010]
According to a first aspect of the present invention, there is provided a method for maintaining and managing a partition wall such as a pipe line, wherein a cross-section C-shaped packing is provided between the circumferentially tapered surfaces of the plate-like tightening portion and at least one side of the plate-like tightening portion. A plug provided with a plurality of casters and having a tightening / relaxing means for the plate-like tightening member at the center is carried into a partition wall such as a pipe , set at a required position, and the packing It is possible to move or unload the plug after releasing the pressure seal of the plug after performing work in the wall such as required maintenance or management under the condition that the fluid in the wall is closed . Further, a stepping pressure body that can be raised and lowered is disposed on the circumferential side of the stopper body that is connected to both end surface members that can be carried into the partition wall, and casters are disposed on the circumferential side of the stopper body. combination set was the stopper with respect to the plug , But also wherein the stabilizing of the plug set position at a pressure difference condition between the plug and out of the compartment walls.
[0011]
The maintenance management method in a partition wall such as a pipeline according to the second invention is connected to a safety management mechanism outside the pipeline via the flexible hose in the first invention, and the safety in the pipeline outside the pipeline. It is characterized by carrying out while managing .
[0012]
In the first or second invention, the maintenance management method for a partition wall such as a pipe line according to the third invention is characterized in that a part of the partition wall in which the plug is tightly sealed by pressure is poured or drained by natural or pressurized pressure. The maintenance management method for a partition wall such as a pipe line according to claim 1 or 2, wherein the maintenance management work is performed without exhausting air.
[0013]
The partition wall maintenance management device such as a pipe line according to the fourth invention is formed so as to be able to be carried into the partition wall, and has a cross-sectional C-type packing provided between the circumferential taper surfaces of the plate-like tightening member and A plurality of casters are disposed on at least one side of the plate-like tightening portion body, and a plug provided with a tightening / relaxation means for the plate-like tightening portion body in the center portion, so that it can be carried into the partition wall. A stepping pressure member that can be raised and lowered is disposed on the peripheral side of the stopper member that is formed and connected to both end surface members, and a stopper having casters disposed on the peripheral side of the stopper member. To do.
[0014]
According to a fifth aspect of the present invention, there is provided a partition wall maintenance management device for a pipe or the like according to the fourth aspect, wherein a plurality of cross-section C-type packings are provided between the circumferential taper surfaces of the plate-like tightening member and It is characterized in that a plate-like tightening portion body having a circumferential tapered surface formed on both sides is interposed between the cross-section C-type packings .
[0015]
The maintenance management device in a partition wall such as a pipeline according to the sixth invention is the fourth or fifth invention , wherein an inlet / branch branched into a passage formed by the partition wall by the pipeline or the like is formed, and a plug and One or both of the stoppers are carried in or out .
[0016]
According to a seventh aspect of the present invention, there is provided the maintenance management device for a partition wall such as a pipe line in any one of the inventions 4 to 6, wherein a safety management mechanism provided outside the pipe line in either one or both of the plug and the stopper is a flexible conductor. It is characterized by having been connected via .
[0017]
According to the present invention as described above, a ring-shaped packing can be tightened or loosened by tightening means in a partition wall such as a pipe line, and a plug that can be moved and operated in the partition wall is carried into the partition wall. By setting the position, simple and quick setting such as manual operation using a packing material shaped on a smooth and orderly wall surface such as a pipeline, and setting to an appropriate position such as in the partition wall by fixing operation. Alternatively, the setting can be changed by moving it at any time, and stable and accurate application is possible even for a metal wall such as a pipe line.
[0018]
The packing is tightly sealed and the fluid in the compartment wall is closed, and then the necessary maintenance and management work is performed. Then, the tight seal of the plug is released and moved or carried out to the compartment wall such as a pipe line. On the other hand, a rapid construction work can be performed, and there is no deformation damage to a partition wall such as a pipeline, and a preferred construction can be carried out easily and rationally.
[0019]
As described above for the smooth wall surface of the steel pipe or other rolled metal material by using a stopper together with the plug and stabilizing the plug setting position even under the pressure difference condition inside and outside the plug in the partition wall. It is possible to reasonably obtain the above-described characteristics of the present invention by simply and accurately setting an appropriate seal with a sealing means such as packing that can be set by manual operation.
[0020]
A plurality of casters are arranged on both the plug and the stopper , and the caster is carried in and out of the partition wall by the caster and moved to tightly seal the plug packing or release the tight seal. As described above, the large plug or caster can be moved easily and smoothly by the manual operation of the operator, so that the maintenance management work with a considerably large plug and stopper can be performed reasonably and accurately.
[0021]
It is connected to a safety management mechanism provided outside the partition wall such as a pipe line via a flexible hose, and it is carried out while managing the safety level inside the partition wall outside the partition wall. Therefore, proper maintenance management can be appropriately performed under such safety management conditions, and necessary and appropriate operations can be performed under such maintenance management conditions.
[0022]
Maintaining and managing the part of the partition wall that has been tightly sealed with a set of the above-mentioned plugs as described above without any natural or pressurized water injection or exhaust. The target compartment wall is safe and appropriate under the management conditions of natural force utilization using fluids such as air or water. Let the work be done.
[0023]
A cross-section C-shaped packing is provided between the peripheral taper surfaces of the plate-like tightening portion, and a plurality of casters are disposed on at least one side of the plate-like tightening portion, and the plate-like tightening portion is provided at the center. By providing the tightening / relaxing means for the body, the tightening / relaxing operation to the inside of the partition wall such as the pipe line can be performed smoothly and simply by operating the tightening / relaxing means for the tightening portion body.
[0024]
A plurality of cross-section C-type packings are provided between the circumferential taper surfaces of the plate-like tightening portion, and a plate-like fastening portion body having circumferential taper surfaces on both sides is provided between the plurality of cross-section C-type packings. As a result, a partition wall maintenance management device having a plurality of cross-section C-shaped packings and plate-like tightening members is provided, and a compact mechanism is used for stable management and effective management with an effective seal. I will try.
[0025]
By forming an inlet / outlet branched into a passage formed by the partition wall by a pipe line and the like, and either or both of the plug and the stopper are carried in or out of the inlet / outlet, the above-mentioned inside the partition wall such as the pipe line Either or both of the plug and the stopper as described above can be carried in or out in a simple manner within a short time, so that the desired maintenance management and various operations can be easily performed.
[0026]
A plurality of cross-section C-type packings are interposed between the plate-like tightening parts, and casters are disposed on the outer surfaces of the plate-like tightening parts. It is possible to set it in a partition wall such as a road, thereby achieving an effective seal setting easily and accurately, and performing an appropriate effective maintenance management and a desired work in the partition wall.
[0027]
A stopper in which a stepping pressure body that can be raised and lowered is disposed on the circumferential side of a stopper body that is connected to both end surface members that can be carried into the partition wall, and a caster is disposed on the circumferential side of the stopper body. The stopper body that can be easily moved into and out of a smooth partition wall such as a pipe line by a stopper that can be easily carried into the partition wall by connecting, and the stopper body that can be freely moved by a caster is raised and lowered Thus, the stopper is effectively fixed at an appropriate position in the partition wall to effectively obtain a stopper action.
[0028]
Maintenance inside the partition wall in the safety management mechanism provided outside the partition wall by connecting a safety management mechanism provided outside the partition wall such as a pipe line to one or both of the plug and stopper via a flexible conductor Management conditions can be properly displayed and monitored, and maintenance management or work is performed under conditions that ensure accurate safety management.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Specific embodiments of the present invention as described above will be described with reference to the accompanying drawings. Specific examples of the plug 1 in the present invention are as shown in FIGS. 1, 2, 3 and 4, and An example of the stopper 2 preferably used in combination with such a plug is as shown in FIG. That is, both the plug 1 and the stopper 2 are adapted to the inner diameter of the partition wall such as a pipe line to be applied, and when inserted into the pipe line or the like, a small clearance is allowed between the inner wall and the inner surface of the partition wall. It has an outer diameter that can be moved and operated.
[0030]
1 and 2 employ a single plug 1 and have a side plate 21 provided with casters 23 on the front and rear sides and a ring plate 11 attached to one side of the side plate 21, The central shaft cylinder 30 provided on the side plate 21 is integrated and assembled, and the tightening protrusion 12 with respect to the packing material 10 can be appropriately adjusted by the tightening means 12 screwed into the central shaft cylinder 30. In the plug 1 using a single packing material 10, an elastic ring 32 is provided on one side of a side plate 21 attached to one end portion of a central shaft cylinder 30, and the packing material 10 is a fastening means 12. When the taper ring 31 is tightened by the narrowing operation by, and the distance between the both side taper surfaces 19 and 19 is changed, the taper ring 31 is pushed outward in the radial direction to seal the inner surface of the partition wall 3 or to retract to eliminate the seal. Like You have me. The casters 23 before and after the packing material 10 slightly protrude in the radial direction, but are basically formed thin and can be obtained with excellent handling and moving operability.
[0031]
The taper ring 31 receives the pressing force of the pressing portion 34 of the slide member 33 mounted on the central shaft cylinder 30 with the shaft ring 35, and the tightening action by the tightening means 12 is applied to the slide member 33. As shown in FIGS. 1 and 2, a side plate 21 is fixed to the central shaft cylinder 30, and a corner rubber material which is an elastic material having different hardness is provided at the corner portions of the side plate 21 and the ring plate 11. 32 is attached, and the corner rubber material 32 and the taper ring 31 described above are opposed to each other and joined to tapered surfaces 19 formed on both sides of the packing material 10.
[0032]
However, the plug 1 is preferably used in order to form a stable sealing state of the ring-shaped packing material 10 such as rubber having a C-shaped cross section whose cross section is clearly shown in FIGS. Adopted as two sets, that is, by attaching or interposing a taper ring 31 such as a steel plate to the side surfaces and the middle of the packing materials 10 and 10, and tightening these taper rings 31 by the tightening means 12, The intermediate portion of the packing material 10 is bulged in the outer peripheral direction to tightly seal the inner surface of the partition wall.
[0033]
As described above, a plurality of the packing materials 10 and the taper ring 31 disposed are set in a cross-sectional shape with respect to the axial direction of the partition wall such as a pipe line by being carried into the partition wall. However, as described above, a plurality of casters 13 are arranged on the bottom of such an end face pressing plate 11 to facilitate the moving operation in the partition wall such as a pipe line, and so on. It can be moved to an appropriate position in the partition wall by pushing by hand. The packing material 10 may be closed and sealed with air pressure or the like using a tube together. However, if the packing material 10 is bulged by the tightening operation with the presser plates 11 and 11 as described above, high-pressure air or the like is not required, and relatively thick A thick seal material is used, and it can be easily expanded without requiring special piping such as high-pressure air, so that an appropriate seal joint state can be formed.
[0034]
The stopper 2 used in combination with the plug 1 as shown above is as shown in FIG. 5, and side plates 21 and 21 having the same diameter as the plug 1 are integrally assembled by connecting members 22 and 22 to form a circular frame type. In addition, a caster 23 is disposed at the bottom to ensure mobility in a partition wall such as a tube. Further, a plurality of treading pressure portions 24 are arranged on the peripheral side portion of the circular frame mold body as described above, that is, the treading pressure portions 24 rotate around an attachment shaft 25 provided on one side thereof. The treading pressure portion 24 protrudes to the outside of the circular frame 20 by rotating around the mounting shaft 25 and is treaded on the inner surface of the partition wall such as a tube body to be fixed. It is a thing. It should be noted that such a stepping pressure fixing may be performed manually by an operator using a tool, but by adopting a hydraulic or mechanical jack mechanism, smooth operation can be performed. It is clear.
[0035]
In addition, in order to ensure safety against the set pressure in the pipe when the pipe according to the present invention is adopted in a partition wall such as a pipe, a gauge 18 and a rupture disk 19 as shown in FIG. 9 are provided. A safety monitoring mechanism 6 is provided outside the partition wall, and a flexible tube 16 as shown in FIG. 8 together with FIG. 6 is led out from the management device portion of the present invention. The monitoring mechanism 6 is partitioned as shown in FIG. The abnormal pressure or the like is monitored by the monitoring mechanism 6 provided in the outside air region of the entrance / exit 5 through the entrance / exit 5 of the wall 3, and the abnormal pressure or the like is displayed on the gauge 18 and the safety valve can be operated. it can.
[0036]
As shown in FIG. 3, the plug 1 is adjusted by a tightening socket 14 and a ratchet 15 tightening handle 17 and the like, and is lifted by an eyebolt 18 to be attached to and detached from the entrance 5 and the like. Further, the stopper 2 is adjusted by a tightening handle 26, a torque wrench 27, a jack handle 28, and the like, and is lifted by an eyebolt 29 in the same manner as the plug 1.
[0037]
A specific embodiment of the above-described method according to the present invention will be described. The plug 1 and the stopper 2 as shown in FIG. 1 are used to connect the plug 1 from the entrance / exit 5 into a pipe line (compartment wall) having an inner diameter of 650 mm. The time required for inserting the stopper 2 and fixing it at a predetermined position is generally within a few minutes. By setting a large number of balloon-like inflating bodies, which is a preferred technique in the prior art, It was confirmed that the time required for the blockage was greatly reduced as compared with the method in which air was injected into each inflated body and inflated to close the block, and the blockage in the partition wall was always achieved accurately.
[0038]
Further, in the case of the conventional blockage method such as the air pack method, the blockage area is a considerably long range of at least 1 m in the length direction of the pipeline, and the resulting pressure difference is at most 0.2 kg / In any case, the number of man-hours and the construction period must be large. However, according to the present invention, the width of the blockage area may be 20 cm or less. Smooth movement operation, the pressure difference obtained exceeds 2kg / cm2 and reaches 2.5kg / cm2, enabling efficient water injection and exhaust, and in any case efficient, simple and quick processing. Let me work.
[0039]
【The invention's effect】
According to the present invention as described above, it is possible to set the target construction position accurately with a simple and short-time operation, and efficiently perform injection / drainage or injection / exhaust and other operations with a sufficiently large pressure difference between the inside and outside of the plug. In addition, the present invention has an effect of facilitating and facilitating the handling by making the configuration of the apparatus sufficiently simple and small, and is an industrially significant invention.
[Brief description of the drawings]
FIG. 1 is a partial front view of one of the plugs according to the present invention.
FIG. 2 is a cross-sectional view taken along the line A ... A in FIG.
FIG. 3 is a perspective view of an example of a plug according to the present invention, and is an explanatory view showing an operation unit and the like together;
4 is a cross-sectional view of the one shown in FIG. 3 at the same cross-sectional position as that in FIG.
FIG. 5 is a perspective view of an example of a stopper according to the present invention, and is an explanatory view showing an operation unit and the like together;
FIG. 6 is a cross-sectional explanatory view showing an operation state in which an object according to the present invention is carried into a partition wall such as a pipeline and set.
FIG. 7 is a perspective view showing an operation state of the plug of the present invention.
FIG. 8 is a perspective view of the plug and stopper according to the present invention set in a partition wall.
FIG. 9 is a perspective view showing an example of a safety device employed in the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Plug 2 Stopper 3 Compartment wall 5 Entrance / exit 6 Safety monitoring mechanism 7 Seat part 10 Packing material 11 Ring board 12 Tightening means 13 Caster 14 Tightening socket 15 Ratchet 16 Flexible pipe 17 Tightening handle 18 Eye bolt 19 Tapered surface 20 Circular Frame 21 Side plate 22 Connecting member 23 Caster 24 Stepping pressure portion 25 Mounting shaft 26 Tightening handle 27 Torque wrench 28 Jack handle 29 Eye bolt 30 Center shaft cylinder 31 Tapered ring 32 Elastic ring 33 Slide member 34 Pressing portion 35 Shaft ring

Claims (7)

A cross-section C-shaped packing is provided between the peripheral taper surfaces of the plate-like tightening portion, and a plurality of casters are disposed on at least one side of the plate-like tightening portion, and the plate-like tightening portion is provided at the center. A plug provided with tightening / relaxing means for the body is carried into a partition wall such as a pipe line and set at a required position, and under the condition that the packing is tightly sealed and the fluid in the partition wall is closed. It can be moved or carried out after releasing the tension seal of the plug after working in the partition wall such as maintenance or management ,
A stepping pressure unit that can be raised and lowered is disposed on the circumferential side of the stopper unit that is connected to both end surface members that can be carried into the partition wall, and a caster is disposed on the circumferential side of the stopper unit. a combination of the stopper relative to the plug, the partition wall in the maintenance process such as tube channel, characterized in that stabilizing of the plug set position even pressure difference condition between the plug and out of the compartment walls. The maintenance inside a partition wall such as a pipeline according to claim 1 , wherein the maintenance is carried out while managing the safety inside the pipeline outside the pipeline by being connected to a safety management mechanism outside the pipeline via a flexible hose. Management method. 3. The inside of a partition wall such as a pipe line according to claim 1 or 2, wherein a part of the partition wall in which the plug is tightly sealed is subjected to natural or pressurized pouring or exhausting and maintenance work. Maintenance management method. It is formed so that it can be carried into the partition wall, and a cross-sectional C-shaped packing is provided between the peripheral taper surfaces of the plate-like tightening portion, and a plurality of casters are arranged on at least one side of the plate-like tightening portion. And a plug provided with tightening / relaxing means for the plate-shaped tightening member at the center ,
A stepping pressure member that can be raised and lowered is provided on the peripheral side of the stopper member that is formed so that it can be carried into the partition wall, and both end face members are connected, and a caster is provided on the peripheral side of the stopper member. A maintenance management device in a partition wall, such as a pipeline, characterized by comprising a stopper . A plurality of cross-section C-type packings are provided between the circumferential taper surfaces of the plate-like tightening portion, and a plate-like fastening portion body having circumferential taper surfaces on both sides is provided between the plurality of cross-section C-type packings. The maintenance management apparatus in a partition wall such as a pipe line according to claim 4 . Due conduit forming a doorway branched into passages formed by partition walls, according to claim 4 or 5, wherein it has to be carried in or out of either or both of the plug and stopper from said output inlet Maintenance management device in the partition wall such as a pipe line. 7. The pipeline maintenance management device according to claim 4, wherein a safety management mechanism provided outside the pipeline is connected to one or both of the plug and the stopper via a flexible conductor.

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