JPH0933728A - Cooled bore scope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bore scope which enables high-temperature inside inspection, for example, in a machine in high-temperature environment. SOLUTION: A cooling fiber part which constitutes the bore scope consists of a light source fiber 7 which guides light from a light source, a scope fiber 6, a cooling gas hole jacket 8 which forms a cooling gas flow passage outside those fibers 7 and 6, and a fiber porous jacket material which covers them. Many cooling gas holes 9 are formed in the cooling gas hole jacket 8. Cooling gas which flows in the cooling gas flow passage and cools the light source fiber 7 and scope fiber 6 flows in the fiber porous jacket material through the cooling gas holes 9 of the cooling gas hole jacket 8 and is discharged after passing through the fiber porous jacket material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a borescope applied to a high temperature internal inspection of an engine, a mechanical device, a boiler and the like after the operation is completed.

[0002]

2. Description of the Related Art For visually inspecting the inside of a narrow machine,
A borescope composed of an illumination fiber that guides light and a scope fiber that guides an internal image is used.
FIG. 5 is a sectional view of the tip of a conventional borescope. Reference numeral 6 is a fiber for a scope, 7 is a fiber for illumination, and these fibers 6, 7 are covered with a covering material 13.
The conventional covering material 13 is a material having no heat resistance.

[0003]

In the conventional borescope technology having the above-mentioned structure, the machine which is at high temperature,
When the internal inspection of the boiler etc. was carried out, the coating of the borescope might be melted or burned due to heat.

An object of the present invention is to provide a borescope capable of inspecting the inside of a machine in a high temperature environment at a high temperature, excluding the disadvantages found in the conventional borescope.

[0005]

SUMMARY OF THE INVENTION In order to provide a borescope having excellent heat resistance capable of solving the above-mentioned problems, except for the drawbacks found in the conventional borescope, the present invention provides a cooling gas passage inside the scope. And a coating for covering the outer surface of the scope is made of a porous material, and the cooling gas flowing through the cooling gas flow path is discharged through the coating made of the porous material.

The cooling gas used in the borescope of the present invention is not particularly limited, and a gas from an appropriate cooling gas source may be used depending on the high temperature environment in which the borescope is used. Further, the porous material used for the borescope of the present invention is not particularly limited, and an appropriate material may be adopted depending on the high temperature environment in which the borescope is used.

The borescope according to the present invention has the above-mentioned structure, and the cooling gas generated by an appropriate cooling gas source is caused to flow in the cooling gas flow path of the borescope, so that the cooling gas is distributed over the entire borescope. Send in. The cooling gas thus fed is discharged from the porous material coating covering the outer surface of the scope to cool the entire borescope.

Therefore, according to the cooling borescope of the present invention, it is possible to inspect at high temperature inside the machine in a high temperature environment.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The cooling borescope according to the present invention will be specifically described below based on the illustrated embodiments. FIG. 1 shows the overall configuration of a borescope device using a cooling borescope according to an embodiment of the present invention.
In FIG. 1, a cooling gas source 4 generates a cooling gas for scope cooling, and a fiber light source generator 3 generates a light for illumination.

While cooling the cooling fiber portion 1 with the cooling gas generated from the cooling gas source 4, the borescope is guided into the high temperature machine, and the scope portion 2 is observed while being illuminated by the illumination from the tip of the borescope. The structure of the cooling fiber part 1 is shown in FIGS.

First, FIG. 2 is an enlarged view of the outer appearance of the tip portion of the cooling fiber portion 1. The cooling fiber unit 1 uses the light source fiber 7 to generate the light generated by the fiber light source generator 3.
The observation object is observed with the fiber 6 for a scope according to the light. The cooling gas hole coating 8 is a tube for guiding the cooling gas to the tip.

FIG. 3 shows the internal structure of the fiber part 1. The cooling gas hole coating 8 is provided with a large number of cooling gas holes 9, and the cooling gas flowing in the cooling fiber part 1 is cooled by this cooling gas hole 9. It flows out through the cooling gas holes 9 of the gas hole coating 8 into the inside of the fiber porous coating material 5.

The fiber porous coating material 5 is a coating made of a porous material, and as described above, it flows while cooling the scope fiber 6 and the light source fiber 7 and the cooling gas holes 9 of the cooling gas hole coating 8. The cooling gas introduced into the inside of the fiber porous coating material 5 is discharged from the surface.

FIG. 4 is a sectional view of the fiber tip 10 shown in FIG. As shown in FIG. 4, a cooling gas passage 11 is formed between the outside of the scope fiber 6 and the light source fiber 7 and the inside of the cooling gas hole coating 8, and the cooling gas passes through this cooling gas passage 11. The fibers 6 and 7 pass through and flow while cooling.

The cooling gas flowing through the cooling gas passage 11 while cooling the fibers 6 and 7 flows out from the cooling gas holes 9 of the cooling gas hole coating 8 to the inside of the fiber porous coating material 5 as described above. Then, it is discharged to the outside of the fiber through the fiber porous coating material 5. 12 is
The release state of the cooling gas from the fiber porous coating material 5 is shown.

[0016]

As described above, in the cooling borescope of the present invention, the cooling gas flowing through the cooling gas passage provided inside the scope is passed from the inside of the borescope through the porous material covering the outer surface of the scope. Since it is released over the entire scope, it is possible to perform an internal inspection of the high temperature environment of machines, boilers, etc. that have become hot by using this borescope.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a borescope device using a cooling borescope according to an embodiment of the present invention.

FIG. 2 is a partial perspective view showing an enlarged outer appearance of a tip portion of a cooling borescope used in the apparatus of FIG.

FIG. 3 is a perspective view showing an internal structure of the cooling borescope shown in FIG. 2 with a part thereof cut away.

4 is a vertical cross-sectional view of the tip portion of the cooling borescope shown in FIG.

FIG. 5 is a vertical cross-sectional view of a tip portion of a conventional borescope.

[Explanation of Codes] 1 cooling fiber part 2 scope part 3 fiber light source generator 4 cooling gas source 5 fiber porous coating material 6 fiber for scope 7 fiber for light source 8 cooling gas hole coating 9 cooling gas hole 10 fiber tip 11 cooling gas Flow path 12 Cooling gas release state

Claims (1)

[Claims] 1. A cooling gas passage is provided inside the scope, and a coating for covering the outer surface of the scope is made of a porous material so that the cooling gas flowing through the cooling gas passage is discharged through the coating made of the porous material. A cooling borescope characterized by being configured in.