KR20230124517A - Lighting detector of fiber-cable module - Google Patents

Abstract

Disclosed is an invention for a diagnostic device for an optical fiber for detecting a flame. The disclosed flame-sensing optical fiber diagnostic device includes: a first side pad provided on one upper side of the base plate and open to both sides through a first main hole and at least one first sub-hole, and a first side pad provided on the other upper side of the base plate and A second side pad passing through a second main hole that coincides with the first main hole and passing through a second sub hole that coincides with the first sub hole, and one side of the reference optical fiber is exposed to the side of the second side pad in the first main hole. and a reference optical cable module having the other side of the reference optical fiber exposed to the first side pad in the second main hole, and having one side of the inspection optical fiber exposed to the second side pad in the first sub hole and having a corresponding second sub hole An inspection optical cable module having the other side of the inspection optical fiber exposed to the first side pad, and a comparison of the output value of the intensity of the light source irradiated to one side of the reference optical fiber and the output value of brightness detected from the other side of the reference optical fiber. It is characterized by including a detection unit that determines the normal value of the inspection optical fiber by comparing the intensity of the light source with the output value of the brightness detected on the other side of the inspection optical fiber.

Description

Optical fiber diagnostic device for flame detection {LIGHTING DETECTOR OF FIBER-CABLE MODULE}

The present invention relates to a diagnostic device for an optical fiber for detecting flames, and more particularly, to a diagnostic device for testing whether an optical fiber of an optical cable applied to a combustor of a gas turbine of a power plant normally transmits light (flame) and whether or not it is in a damaged state. By comparing the light transmission amount of the reference optical fiber and virtually reproducing the actual flame state inside the combustor, the light transmission performance of the inspection optical fiber can be confirmed with the detected information, and the durability of the inspection optical fiber is calculated with accumulated data. It relates to a diagnostic device for an optical fiber for flame detection to determine the replacement cycle.

In general, a combustor is formed in a gas turbine of a power plant, and since fuel must be continuously supplied to the combustor to achieve combustion, a flame detection device is generally installed on one side of the combustor.

According to the detection of the flame detection device, the fuel supply is controlled by the control means by determining the cessation of combustion and the size of the flame.

However, if the flame detection device itself is outdated and cannot detect accurate flame information, or if the optical cable module that transmits the information detected by the flame detection device is deteriorated and accurate information cannot be transmitted, accuracy in combustion control or fuel supply control of the boiler There is a problem with falling.

Therefore, it is necessary to inspect whether the optical cable module is in a normal state through a test flame detector, but conventionally, a separate test flame detector has not been disclosed.

The background art of the present invention is disclosed in Republic of Korea Patent Registration No. 10-1156167 (registered on June 7, 2012, a flame detection sensor used in a gas turbine and a flame detection system using the sensor).

Therefore, there is a need to improve this.

The above technical configuration is a background art for helping understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

The present invention has been made to improve the above problems, and whether or not the optical fiber of the optical cable applied to the combustor of the gas turbine of the power plant normally transmits light (flame) and whether or not it is damaged is determined by a separate test diagnostic device. By virtually reproducing the actual flame state inside the combustor while comparing the light transmission amount of the optical fiber, the light transmission performance of the optical fiber for inspection can be confirmed with the detected information, and the durability of the optical fiber for inspection is calculated with accumulated data to replace the replacement cycle. The purpose is to provide a diagnostic device for optical fiber for detecting flames.

An optical fiber diagnostic device for flame detection according to the present invention includes: a base plate; a first side pad provided on one side of an upper portion of the base plate and passing through a first main hole and at least one first sub hole, which are open to both sides; provided on the other upper side of the base plate to face the first side pad, through a second main hole coincident with the first main hole, and through a second sub hole coincident with the first sub hole; 2 side pads; a reference optical cable module having one side of the reference optical fiber exposed in the first main hole toward the second side pad and having the other side of the reference optical fiber exposed through the second main hole toward the first side pad; an inspection optical cable module having one side of the inspection optical fiber exposed in the first sub hole toward the second side pad and having the other side of the inspection optical fiber exposed in the corresponding second sub hole toward the first side pad; and an output value of the intensity of the same light source irradiated to one side of the inspection optical fiber and an output value of brightness detected from the other side of the inspection optical fiber compared to the intensity of the light source irradiated to one side of the reference optical fiber and the output value of brightness detected from the other side of the reference optical fiber. and a detection unit for determining a normal value of the inspected optical fiber by comparing .

The detection unit is movably provided on the base plate, passes a first opening hole on a first side surface to match the first main hole and the first sub hole according to a position, and has a second hole on a second side surface. a body passing through the two opening holes to match the second main hole and the second sub hole according to positions; a light source irradiation unit provided inside the body corresponding to the first opening hole and irradiating a light source having the same brightness to one side of the reference optical fiber or one side of the inspection optical fiber through the first opening hole; and a brightness measurement unit provided inside the body corresponding to the second aperture hole and measuring the brightness of the light source transmitted to the other side of the reference optical fiber or the other side of the inspection optical fiber through the second aperture hole. .

The light source irradiation unit includes a control switch provided on the body to adjust the illuminance of the light source.

The detection unit includes an output unit configured to output an illuminance of the light source irradiated by the light source irradiation unit and a brightness value of the light source measured by the brightness measurement unit.

The output unit is characterized in that it is provided in the body or a separate display device connected to the body.

The first side pad has a first joint port on an outer surface corresponding to the first main hole and the first sub hole, and the second side pad corresponds to the second main hole and the second sub hole. It is characterized by having a second joint port on the outer surface as much as possible.

The body is positioned so that the first opening hole coincides with the first main hole or the first sub-hole and the second opening hole coincides with the second main hole or the second sub-hole by the positioning unit. It is characterized by location.

The positioning unit may include a holding member provided on at least one of the first side pad and the second side pad; and formed on at least one of the first side surface and the second side surface of the body to correspond to the catching member, and by receiving the catching member, the first opening hole is the first main hole or the first sub-hole. Includes an engaging groove for guiding to match.

As described above, the diagnosis of the optical fiber for detecting flame according to the present invention, unlike the prior art, determines whether the optical fiber of the optical cable applied to the combustor of the gas turbine of the power plant normally transmits light (flame) and whether or not it is damaged. By virtually reproducing the actual flame state inside the combustor while comparing the light transmission amount of the reference optical fiber in the diagnostic tester for testing, the light transmission performance of the optical fiber for inspection can be confirmed with the detected information, and the durability of the optical fiber for inspection has been accumulated. It can be calculated as data to determine the replacement cycle.

1 is a perspective view of a diagnostic device for an optical fiber for detecting a flame according to an embodiment of the present invention.
2 is an exploded perspective view of an optical fiber diagnosing device for flame detection according to an embodiment of the present invention.
3 is a plan view of a diagnostic device for an optical fiber for detecting a flame according to an embodiment of the present invention.
4 is a schematic configuration diagram of a detection unit of an optical fiber diagnostic device for flame detection according to an embodiment of the present invention.
5 is a front view of a diagnostic device for an optical fiber for detecting a flame according to an embodiment of the present invention.
6 is a cross-sectional view of main parts showing a configuration for positioning a detection unit of an optical fiber diagnosing device for flame detection according to an embodiment of the present invention.

Hereinafter, an embodiment of a diagnostic device for an optical fiber for detecting a flame according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, definitions of these terms will have to be made based on the content throughout this specification.

1 is a perspective view of an optical fiber diagnostic device for flame detection according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of an optical fiber diagnostic device for flame detection according to an embodiment of the present invention.

3 is a plan view of an optical fiber diagnostic device for flame detection according to an embodiment of the present invention, and FIG. 4 is a schematic configuration diagram of a detection unit of an optical fiber diagnostic device for flame detection according to an embodiment of the present invention. This is a front view of a diagnostic device for an optical fiber for flame detection according to an embodiment of the present invention.

6 is a cross-sectional view of main parts showing a configuration for positioning a detection unit of an optical fiber diagnosing device for flame detection according to an embodiment of the present invention.

Referring to FIGS. 1 to 6, a flame detection optical fiber diagnostic device 10 according to an embodiment of the present invention includes a base plate 20, a first side pad 30, a second side pad 40, a reference It includes an optical cable module 50, an inspection optical cable module 60, a detection unit 70 and a positioning unit 80.

The base plate 20 has at least a flat upper surface, and supports the first side pad 30, the second side pad 40, and the detection unit 70.

The base plate 20 can be applied in various shapes and materials.

The first side pad 30 is provided on one side of the upper portion of the base plate 20 and passes through a first main hole 32 and at least one first sub hole 34 open to both sides. At this time, the first side pad 30 may be manufactured integrally with the base plate 20 or may be detachably coupled to the base plate 20 .

In addition, the first side pad 30 is formed such that one first main hole 32 and one first sub hole 34 are open to both sides.

And, the second side pad 40 is provided on the other upper side of the base plate 20 to face the first side pad 30 . At this time, the second side pad 40 is disposed parallel to the first side pad 30 and is provided integrally with or detachably from the base plate 20 .

In addition, the second side pad 40 has a through hole so that the second main hole 42 coincides with the first main hole 32 is open to both sides, and the second sub hole (corresponding to the first sub hole 34) 44) to be open on both sides.

At this time, the first main hole 32 and the second main hole 42 are arranged in a straight line in a direction perpendicular to the axial direction of the first side pad 30, and the first sub hole 34 and the second The sub holes 44 are arranged on a straight line.

In addition, the reference optical cable module 50 includes a reference optical fiber 52, a reference one-side connector 54, and a reference other-side connector 56.

In particular, the reference optical cable module 50 is a cable to which the reference optical fiber 52 is applied, and one side of the reference optical fiber 52 is exposed in the first main hole 32 toward the second side pad 40, The other side of the reference optical fiber 52 is exposed to the side of the first side pad 30 in the second main hole 42 .

In addition, the inspection optical cable module 60 is a cable to which the optical fiber 62 to be inspected is applied, and includes the inspection optical fiber 62, the inspection one-side connection port 64, and the inspection other-side connection port 66.

At this time, the detection unit 70 connects a plurality of inspection optical cable modules 60 while replacing them in a state where the reference optical cable module 50 is installed and maintained, and transmits the amount of light (illuminance) detected by the reference optical cable module 50 , output value) and the transmission amount of light detected by the inspection optical cable module 60 (illuminance, output value) are compared.

In particular, the inspection optical cable module 60 has one side of the inspection optical fiber 62 exposed in the first subhole 34 toward the second side pad 40, and the inspection optical fiber 62 in the corresponding second subhole 44. The other side of 62 is provided to be exposed toward the first side pad 30 side.

In detail, the reference optical fiber 52 has the reference one-side connector 54 on one side along the axial direction and the reference other-side connector 56 on the other side.

At this time, the reference optical fiber 52 is exposed to the front side of the reference one-side connection port 54 and is exposed to the front side of the reference other side connection port 56 .

The standard one-side connector 54 is inserted into the first main hole 32 from the outside of the first side pad 30 on the front side. Thus, one end of the reference optical fiber 52 is exposed toward the second side pad 40.

Also, the standard other connector 56 is inserted into the second main hole 42 from the outside of the second side pad 40 on the front side. Thus, the other end of the reference optical fiber 52 is exposed toward the first side pad 30.

At this time, the standard one side connector 54 is fixed to the first joint port 36 provided on the outside corresponding to the first main hole 32 of the first side pad 30, and the standard other side connector 56 is It is fixed to the second joint port 46 provided on the outside corresponding to the second main hole 42 of the second side pad 40.

In addition, the inspection optical fiber 62 has the inspection one-side connection port 64 on one side along the axial direction and the inspection other-side connection port 66 on the other side. At this time, the inspection optical fiber 62 is exposed to the front side of the inspection one-side connection port 64 and is exposed to the front side of the inspection other-side connection port 66 .

The inspection side connector 64 is inserted into the first sub hole 34 from the outside of the first side pad 30 on the front side. Thus, one end of the inspection optical fiber 62 is exposed toward the second side pad 40.

And, the test other side connector 66 is inserted into the second sub hole 44 from the outside of the second side pad 40 on the front side. Thus, the other end of the inspection optical fiber 62 is exposed toward the first side pad 30.

At this time, the test one side connector 64 is fixed to the first joint port 36 provided on the outside corresponding to the first sub hole 34 of the first side pad 30, and the test other side connector 66 is It is fixed to the second joint port 46 provided on the outside corresponding to the second sub hole 44 of the second side pad 40.

The first joint port 36 and the second joint port 46 can be applied in various shapes.

On the other hand, the detection unit 70 compares the intensity of the light source irradiated to one side of the reference optical fiber 52 with the output value of brightness detected from the other side of the reference optical fiber 52, and compares the intensity of the same light source irradiated to one side of the inspection optical fiber 62. It serves to determine the normal value of the inspection optical fiber 62 by comparing the intensity and the output value of the brightness detected on the other side of the inspection optical fiber 62.

To this end, the detection unit 70 includes a body 71, a light source irradiation unit 72, a brightness measurement unit 73, and an output unit 74.

The body 71 is movably provided on the base plate 20 . At this time, the body 71 has its first side surface 75 interviewed or approached the first side pad 30, and its second side surface 76 interviewed or approached the second side pad 40. Thus, the body 71 is guided by the first side pad 30 and the second side pad 40 and is reciprocally moved in a straight line.

And, the body 71 passes through the first opening hole 77 on the first side surface 75 and through the second opening hole 78 on the second side surface 76 . So, according to the position where the body 71 is fixed, the first opening hole 77 coincides with the first main hole 32 or the first sub hole 34, and the second opening hole 78 corresponds to the second opening hole 78. It matches the main hole 42 or the second sub hole 44.

The body 71 can be deformed into various shapes.

The light source irradiation unit 72 is provided inside the body 71 corresponding to the first opening hole 77, and passes through the first opening hole 77 to one side of the reference optical fiber 52 or one side of the inspection optical fiber 62. It plays the role of irradiating a light source of the same brightness to At this time, the body 71 may have a dark room therein, and the dark room may be connected to the first opening hole 77 .

Accordingly, the light source irradiation unit 72 may be provided in the corresponding dark room to irradiate light having an intensity set toward the first opening hole 77 . The light passing through the first aperture hole 77 flows into the corresponding first main hole 32 or first sub hole 34 and is irradiated to one end of the reference optical fiber 52 or one end of the inspection optical fiber 62. .

Thus, the reference optical fiber 52 or the inspection optical fiber 62 transmits and guides the light (flame) introduced into one end to the other.

At this time, the light source irradiation unit 72 includes a control switch 79. The control switch 79 is provided on the body 71 to adjust the illuminance of the light source. The control switch 79 can be applied in various ways such as a rotary knob.

And, the brightness measurement unit 73 is provided inside the body 71 corresponding to the second aperture hole 78, and through the second aperture hole 78, the other side of the reference optical fiber 52 or the inspection optical fiber 62 ) serves to measure the brightness of the light source transmitted to the other side.

In particular, the body 71 may have another dark room therein, and the dark room may be connected to the second opening hole 78 .

Accordingly, the light introduced into one end of the reference optical fiber 52 is transferred to the brightness measuring unit 73 through the second opening hole 78 corresponding to the other end of the reference optical fiber 52 .

Alternatively, the light introduced into one end of the inspection optical fiber 62 is transferred to the brightness measurement unit 73 through the second opening hole 78 corresponding to the other end of the inspection optical fiber 62 .

At this time, the brightness measurement unit 73 is provided in the dark room and detects the intensity of light transmitted through the second opening hole 78 and emitted.

Therefore, under the condition that the intensity of the light source irradiated to one side of the reference optical fiber 52 and the intensity of the same light source irradiated to one side of the inspection optical fiber 62 are the same, the brightness measurement unit 73 measures the brightness at the other side of the reference optical fiber 52. It serves to compare the output value of brightness detected from the other side of the inspection optical fiber 62 with the output value of brightness detected.

When the absolute value of the comparison value is within the set range, the corresponding inspection optical fiber 62 is determined to be in a normal state. At this time, even if the inspection optical fiber 62 is in a normal state, the replacement time of the corresponding inspection optical fiber 62 is predicted by the difference between the illumination intensity of light transmitted to one end of the inspection optical fiber 62 and the illumination intensity of light detected from the other end of the inspection optical fiber 62. It can be.

Conversely, if the absolute value of the comparison value is out of the set range, the corresponding inspection optical fiber 62 is determined to be in an abnormal state. Thus, the operator can perform an operation of replacing the inspection optical fiber 62 and the optical fiber installed at the same time as the inspection optical fiber 62 .

In addition, the output unit 74 serves to output the illuminance of the light source irradiated by the light source irradiation unit 72 and the brightness value of the light source measured by the brightness measuring unit 73 .

At this time, the output unit 74 may display a difference between the output value of brightness detected on the other side of the reference optical fiber 52 and the output value of brightness detected on the other side of the inspection optical fiber 62 .

In particular, the output unit 74 may be provided in the body 71 or a separate display device connected to the body 71 . For convenience, the output unit 74 is illustrated as being a liquid crystal panel provided to be exposed on the upper side of the body 71 .

On the other hand, the body 71 is positioned so that the first opening hole 77 coincides with the first main hole 32 or the first sub hole 34 by the positioning unit 80, and the second opening hole 78 It is positioned to match the second main hole 42 or the second sub hole 44.

For example, the positioning unit 80 includes a locking member 82 and a locking groove 84 .

The holding member 82 is provided on at least one of the first side pad 30 and the second side pad 40 . For convenience, it is assumed that one holding member 82 is provided on the inner lower part of the first side pad 30 . At this time, the locking member 82 can be applied in various ways such as a pin or a ball plunger.

Also, the locking groove 84 is recessed in the lower portion of the first side surface 75 of the body 71 to correspond to the locking member 82 . At this time, the locking groove 84 is located at a position where the first main hole 32 and the first opening hole 77 coincide, and at a position where the first sub hole 34 and the first opening hole 77 coincide, respectively. is formed

Thus, the first opening hole 77 coincides with the first main hole 32 or the first sub hole 34 according to the position where the engaging member 82 is accommodated among the pair of engaging grooves 84 .

Accordingly, the second opening hole 78 coincides with the second main hole 42 or the second sub hole 44 .

The present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and those skilled in the art can make various modifications and equivalent other embodiments. will understand Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: diagnostic device 20: base plate
30: first side pad 32: first main hole
34: 1st sub hole 36: 1st joint port
40: second side pad 42: second main hole
44: second sub hole 46: second joint port
50: reference optical cable module 52: reference optical fiber
54: reference one side connection port 56: reference other side connection port
60: inspection optical cable module 62: inspection optical fiber
64: inspection one side connection port 66: inspection other side connection port
70: detection unit 71: body
72: light source irradiation unit 73: brightness measurement unit
74: output unit 77: first opening hole
78: second opening hole 80: positioning unit
82: engaging member 84: engaging groove

Claims (8)

base plate;
a first side pad provided on one side of an upper portion of the base plate and passing through a first main hole and at least one first sub hole, which are open to both sides;
provided on the other upper side of the base plate to face the first side pad, through a second main hole coincident with the first main hole, and through a second sub hole coincident with the first sub hole; 2 side pads;
a reference optical cable module having one side of the reference optical fiber exposed in the first main hole toward the second side pad and having the other side of the reference optical fiber exposed through the second main hole toward the first side pad;
an inspection optical cable module having one side of the inspection optical fiber exposed in the first sub hole toward the second side pad and having the other side of the inspection optical fiber exposed in the corresponding second sub hole toward the first side pad; and
The intensity of the light source irradiated to one side of the reference optical fiber and the output value of brightness detected from the other side of the reference optical fiber are compared to the intensity of the same light source irradiated to one side of the inspection optical fiber and the output value of brightness detected from the other side of the inspection optical fiber a detection unit for comparing and determining a normal value of the inspection optical fiber;
The reference optical cable module may include a reference one-side connector having one side inserted into the first main hole from the outside of the first side pad; and
A diagnostic device for an optical fiber for detecting flames, characterized in that one side includes a reference other side connector inserted into the second main hole from the outside of the second side pad.
The method of claim 1, wherein the detection unit,
It is provided to be movable on the base plate, through a first opening hole on a first side surface to match the first main hole and the first sub hole according to a position, and through a second opening hole on a second side surface. a body to match the second main hole and the second sub hole according to positions;
a light source irradiation unit provided inside the body corresponding to the first opening hole and irradiating a light source having the same brightness to one side of the reference optical fiber or one side of the inspection optical fiber through the first opening hole; and
A brightness measurement unit provided inside the body corresponding to the second aperture hole and measuring the brightness of the light source transmitted to the other side of the reference optical fiber or the other side of the inspection optical fiber through the second aperture hole. Diagnosis of optical fiber for flame detection.
According to claim 2,
The light source irradiation unit includes a control switch provided on the body to adjust the illuminance of the light source.
According to claim 2 or 3,
The detection unit comprises an output unit to output the illuminance of the light source irradiated by the light source irradiation unit and the brightness value of the light source measured by the brightness measurement unit.
According to claim 4,
The output unit is provided in the body or a separate display device connected to the body.
According to claim 1 or 2,
The first side pad has a first joint port on an outer surface corresponding to the first main hole and the first sub hole,
The second side pad has a second joint port on an outer surface corresponding to the second main hole and the second sub hole.
According to claim 2 or 3,
The body is positioned so that the first opening hole coincides with the first main hole or the first sub-hole and the second opening hole coincides with the second main hole or the second sub-hole by the positioning unit. Diagnosis of optical fiber for flame detection, characterized in that located.
The method of claim 7, wherein the position setting unit,
a holding member provided on at least one of the first side pad and the second side pad; and
It is formed on at least one of the first side surface and the second side surface of the body to correspond to the holding member, and by receiving the holding member, the first opening hole is connected to the first main hole or the first sub-hole. Diagnosis of an optical fiber for detecting a flame, characterized in that it comprises a hooking groove for guiding to match.

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