JP3742501B2 - Welding inspection device protection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a protection device for a welding inspection instrument provided in a welding work carriage that performs welding work inside an existing pipe.
[0002]
[Prior art]
Conventionally, existing pipes P such as gas, oil, and water are generally joined by joining single pipe joints to each other, but when the penetration at the initial welding is insufficient, In some cases, a recess that is a poorly welded portion is formed.
Moisture or the like, which is a component such as gas, stays in the concave portion of such a poorly welded portion, and corrosion or rust may occur when a long period of time elapses.
And if such a pipe is buried in a place with a lot of traffic and receives a load from the outside, it may cause a serious accident that the pipe is distorted or damaged. A series of work cart groups A shown in FIG.
[0003]
This series of work carriage groups A is connected to a welding work carriage B for repair welding of a defective weld spot discovered by the inspection shown in FIG.
In this welding work carriage B, not only a welding apparatus for repair welding work, but also a monitoring camera used for monitoring and recording the welding work, an illumination device for illuminating the welding location, and the inner circumference of the existing pipe P A so-called welding inspection instrument such as a laser emitting device for accurately grasping the concave portion of the wall surface and the state after welding is also provided.
[0004]
[Problems to be solved by the invention]
In such repair welding performed inside the existing pipe P, the ambient temperature of the welding torch becomes a high temperature of 2000 degrees or more due to the environment of a sealed space in addition to the welding temperature.
Therefore, welding inspection instruments such as laser light emitting devices and surveillance cameras have suffered problems such as failure due to the influence of radiant heat during welding and further shortening the service life.
[0005]
In addition, spatter and welding fumes generated during welding adhere to the monitoring and detection sites of the welding inspection instrument. For example, in a surveillance camera, the field of view is obstructed by the adhesion of the spatter to the filter unit. Further, there has been a problem that the welding inspection instrument cannot sufficiently perform its function.
[0006]
Therefore, the present invention can prevent welding inspection instruments such as a laser light emitting device and a monitoring camera from radiant heat at the time of welding work. It is an object of the present invention to provide a protection device for a welding inspection instrument that has an effect of preventing fume and the like from being attached and protecting it.
[0007]
[Means for Solving the Problems]
In order to solve these problems, the protection device for a welding inspection instrument according to the present invention is:
Inside the existing piping, in a welding work carriage that arranges a welding inspection instrument to be used for monitoring or inspection of the welding operation of the inner peripheral surface of the piping adjacent to the welding torch,
A bracket member for providing a cooling air flow path for protecting the welding inspection instrument, and a monitoring mechanism for the welding inspection instrument, and a discharge mechanism for disposing the cooling air outlet at a detection site ,
The bracket member is provided with a flow passage for the cooling air in a direction coaxial with or intersecting with the welding inspection instrument to be internally provided ,
The ejection mechanism, to form a discharge port of the cooling air on one end, and means for solving monitor, a mechanism for ejecting directly toward the detection site of the welding inspection tool the cooling air from the discharge port Is.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a protection device for a welding inspection instrument according to the present invention will be described below with reference to the accompanying drawings.
[0011]
FIG. 1 is a cross-sectional view of a working carriage provided with a welding inspection instrument protection device according to the present invention, FIG. 2 is a perspective view showing the main part of the welding inspection instrument protection device, and FIG. It is a front view of the embodiment of a laser bracket member, (a2) of the figure is an arrow sectional view in the AA line of (a1) of the figure, (b1) is an implementation of a camera bracket member. FIG. 4B is a cross-sectional view taken along line BB in FIG. 4B, and FIG. 4 is an arrow of the discharge mechanism taken along line CC in FIG. FIG.
[0012]
The protection device 1 for a welding inspection instrument according to the present invention performs a welding operation on the inner peripheral surface of the pipe inside the existing pipe P, and at this time, a welding inspection instrument used for monitoring or inspection of the welding operation. A welding work carriage B arranged adjacent to the welding torch 43,
The welding inspection instrument is internally provided, and the cooling air flow passages 11, 12, 21, and 22 of the welding inspection instrument are provided in the bracket members 10 and 20, and the part is protected by the monitoring detection part of the welding inspection instrument. And a discharge mechanism 30 having a discharge port 31 through which cooling air is discharged.
[0013]
(1) Description of Bracket Member of Protective Device The bracket member of the protective device described in the present embodiment is a laser bracket member 10 and a camera bracket member 20 that respectively house a laser emission device 40 and a monitoring camera 41 of a welding inspection instrument. (See FIGS. 1 and 2).
Hereinafter, an embodiment (see (a1) and (a2) of FIG. 3) of the laser bracket member 10 in which the laser light emitting device 40 is installed, and an embodiment of the camera bracket member 20 in which the surveillance camera 41 is installed (see FIG. 3). (See (b1) and (b2)).
[0014]
[Description of Embodiment of Laser Bracket Member]
A laser bracket member 10 shown in (a1) and (a2) of FIG. 3 that has a box-like appearance is provided with a through hole 45 for interiorizing the laser light emitting device 40 described above. An inlet 13 and an outlet 14 for supplying and discharging cooling air to and from the flow passage 11 are formed in the surface of the through hole 45 on one opening side.
In the present embodiment, the cooling air flow passage 11 from the inlet 13 is formed in parallel with the through hole 45 of the laser light emitting device 40 and has a bent portion 11a having an angle of 90 degrees with respect to a predetermined portion. Is formed. The flow passage 12 extending from the bent portion 11a passes through one side surface of the box-shaped laser bracket member 10, and the through-hole is closed by a plug 15 screwed thereto.
Further, another bent portion 11b is formed at a predetermined position of the flow passage 12 extending from the bent portion 11a, and the flow passage has an outlet 14 that is parallel to the flow passage 11 at an angle of 90 degrees from the bent portion 11b. 11 is formed.
In addition, the arrow displayed in the flow paths 11 and 12 shown to (a1) of FIG. 3 and (a2) shows the flow of the fluid.
[0015]
With such a configuration, the flow passage 11 on the inlet 13 side and the flow passage 12 are formed in a connected state inside the laser bracket member 10, and the cooling air flowing in from the inlet 13 circulates the laser bracket member 10 as a whole. As a result, the laser light emitting device 40 that is cooled over the laser bracket member 10 is also cooled.
Of course, the arrangement positions of the inlet 13 and the outlet 14 can be freely set depending on the shape of the laser light emitting device 40 and the arrangement position of the cooling air supply source.
[0016]
[Embodiment of Camera Bracket Member]
The camera bracket member 20 shown in (b 1) and (b 2) of FIG. 3 whose outer shape is a box shape, as in the case of the laser bracket member 10, is a through-hole for interiorizing the aforementioned monitoring camera 41. 46 is formed, and an inlet 23 and an outlet 24 for supplying cooling air to the flow passage 21 are formed on the surface of the through hole 46 on one opening side. In the present embodiment, the cooling air flow passage 21 from the inlet 23 is formed in parallel with the through hole 46 of the monitoring camera 41 and has a bent portion at an angle of 90 degrees with respect to a predetermined portion. Is formed. The flow path 22 extending from the bent portion is closed by a plug 25 on the side surface of the box-shaped camera bracket member 20.
As with the laser bracket member 10, the arrows displayed in the flow passages 21 and 22 shown in (b1) and (b2) of FIG. 3 indicate the flow of the fluid.
[0017]
Also in this embodiment, similarly to the laser bracket member 10 described above, two inflow ports 23 and 24, that is, two flow passages 21 are formed, and one flow passage 21 has an angle of 90 degrees. In the above description, the flow path 22 is bent and another flow path 21 is connected to the bent flow path 22 to reach the outlet 24.
Of course, the arrangement positions of the inflow port 23 and the outflow port 24 can be freely set as in the case of the laser bracket member 10 depending on the shape of the monitoring camera 41, the supply source of cooling air, and the like.
Thus, since the flow path 21 and the flow path 22 on the inlet 23 side are formed in a connected state inside the camera bracket member 20, the same effect as the laser bracket member 10 can be obtained. The surveillance camera 41 built in 20 is cooled by the cooling air.
[0018]
(2) Description of Protective Device Discharge Mechanism The protective device discharge mechanism 30 shown in the present embodiment is attached to a box-shaped camera bracket member 20 in which a monitoring camera 41 as a welding inspection instrument is provided by a stopper 47. Installed (see FIGS. 2 and 4).
[Configuration of discharge mechanism]
2 and 4 includes a main body 33 that forms a cylindrical cooling air flow passage 32 and a nozzle member 34 that discharges cooling air from the flow passage 32 to one end of the main body 33. In addition, a supply port 35 for receiving the supply of cooling air is formed at the other end of the main body 33.
The discharge mechanism 30 is a mechanism that discharges from the nozzle member 34 through the flow passage 32 when supplied with cooling air from the supply port 35. The discharge port 31 is a monitoring camera that is a welding inspection instrument. 41 is preliminarily installed on the camera bracket member 20 by a stopper 47 so that the cooling air can be directly discharged to the filter 44 of the monitoring camera 41 which is the monitoring and detection part 41.
In this way, by configuring so that the cooling air can be directly discharged to the filter 44 of the monitoring camera, it is possible to prevent spatter and welding fumes that occur during the welding operation from adhering to the filter 44 of the monitoring camera. .
In addition, the arrow displayed on the inlet 35, the flow path 32, and the discharge port 31 shown in FIG. 4 shows the flow of the fluid.
[0019]
In the present embodiment, the stopper 47 is used to describe the cylindrical discharge mechanism 30 attached to the camera bracket member 20, but the shape of the discharge mechanism 30 is the same as that of the present embodiment. Of course, the shape is not limited to the cylindrical shape shown, and may be any shape.
Further, for the installation method and the installation position, if the cooling air can be directly discharged to the detection site, monitoring of the welding inspection instrument, other methods such as a method of inserting into the bracket member can be used, Further, it can be freely installed on a member other than the camera bracket member 20.
Further, in the present embodiment, the function of the ejection mechanism 30 is applied only to the filter 44 of the monitoring camera 41, but the laser light emitting device 40, the illumination device 42 (see FIGS. 1 and 2), and the other One or more welding inspection instruments may be installed as necessary.
Furthermore, when the discharge port 31 is movable, the cooling air discharge position can be easily set to a more effective position, which is convenient. It is also possible to adjust the discharge amount.
In the above description, the cooling medium has been described as cooling air, but it goes without saying that other cooling media such as water and gas can be used depending on the environment.
[0020]
【The invention's effect】
According to the welding inspection instrument protecting apparatus according to the present invention described above, the following effects can be obtained.
[0021]
(1) The temperature of the welding inspection instrument is excessively raised during the welding operation by providing a cooling air flow passage in the bracket member with the welding inspection instrument installed therein and circulating the cooling air during the welding operation. Therefore, it is possible to prevent a failure due to this.
(2) Further, by discharging the cooling air directly to the monitoring and detecting part of the welding inspection instrument, the part can be protected from spatter and welding fume generated during welding work.
(3) Due to the effects of (1) and (2), the service life of the welding inspection instrument can be extended.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a work carriage provided with a welding inspection instrument protection device according to the present invention.
FIG. 2 is a perspective view showing a main part of a protection device for a welding inspection instrument.
FIG. 3A is a front view of an embodiment of a laser bracket member, and FIG. 3A is a cross-sectional view taken along line AA in FIG. ) Is a front view of an embodiment of the camera bracket member, and (b2) in the figure is a cross-sectional view taken along line BB in (b1) of the figure.
4 is a cross-sectional view of the discharge mechanism taken along the line CC in FIG.
FIG. 5 is a side view showing a general arrangement of a carriage group including a welding work carriage.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Protection apparatus 10 ... Laser bracket member 20 ... Camera bracket member 11, 12, 21, 22 ... Flow path 13, 23 ... Inlet 14, 24 ... Outlet 15, 25 ... plug 30 ... discharge mechanism 31 ... discharge port 32 ... flow passage 33 ... main body 34 ... nozzle member 35 ... inlet 40 ... laser light emitting device 41 ... Monitoring camera 42 ... Illumination 43 ... Welding torch 44 ... Filter 45 ... Laser light emitting device fitting hole 46 ... Monitoring camera fitting hole 47 ... Stopper A ... Work carriage group B ... Welding work carriage S ... Command room P ... Existing piping

Claims (1)

Inside the existing piping, in a welding work carriage that arranges a welding inspection instrument to be used for monitoring or inspection of the welding operation of the inner peripheral surface of the piping adjacent to the welding torch,
A bracket member for providing a cooling air flow path for protecting the welding inspection instrument, and a monitoring mechanism for the welding inspection instrument, and a discharge mechanism for disposing the cooling air outlet at a detection site ,
The bracket member is provided with a flow passage for the cooling air in a direction coaxial with or intersecting with the welding inspection instrument to be internally provided ,
The ejection mechanism, to form a discharge port of the cooling air on one end, the monitoring of the welding inspection tool the cooling air from the discharge opening, to a mechanism that discharges directly toward the detection site, and wherein Protection equipment for welding inspection equipment.

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