KR102323114B1 - Scaffolding device for tube inspection - Google Patents

Abstract

The scaffolding device for checking the tube of the present invention is inserted into the furnace of the boiler to support the user, the first scaffold having a plurality of first connection parts with screw grooves formed on the rear side; and a plurality of second footrests inserted into the furnace of the boiler to support the user and having a front connection part having a screw thread coupled to the first scaffold, and a rear connection part provided in a direction opposite to the front connection part and formed with a screw groove. Including, wherein the front connection part has a cylindrical shape, the screw thread is formed at one end of the outer circumferential surface and gear teeth are formed at the other end of the outer circumferential surface, and the second footrest is toothed-coupled to the gear tooth of the front connection part to the front connection part in a straight direction Further comprising a driving unit for moving forward or backward, the driving unit includes a worm gear.
When inserting the scaffolding device from outside the manhole to the inside, the first scaffolding and the second scaffolding are automatically coupled and connected, so there is no need to manually connect a plurality of scaffolds, thereby improving workability and reducing working time.

Description

Scaffolding device for tube inspection

An embodiment of the present invention relates to a scaffolding device for tube inspection that can be easily installed and used by inserting it into a furnace from the outside of a manhole when inspecting the super heater side of a boiler.

In general, boilers such as power plants preheat the outside air and supply it to the burner where fuel is burned, the super heater that heats the water supplied to the boiler with combustion heat and supplies it to the turbine, and the steam discharged from the turbine is heated once again. Richter, etc.

Since a pre-heater, a super heater, a richer, etc. heat air or water through heat exchange, a large amount of heat exchange tubes are installed in the furnace of the boiler for heat exchange. Among them, the area of the super heater is a dense area with an interval of about 300 mm between the heat exchange tubes.

Therefore, if a leak in the heat exchange tube in the super heater area is suspected and inspection is required, after the boiler is stopped and cooled, a wooden scaffold is installed in the super heater area, and the operator performs the inspection on the wooden scaffold.

However, if you want to arrange it from the entrance of the manhole to the inside of the boiler that requires work, you have to manually place a wooden scaffold about 10mm wide to the inside of a few tens of meters. Because the space in the boiler furnace is narrow, it is very difficult to arrange the wooden scaffolding, and since there is no separate fixing structure, there is a problem that the scaffold shakes during operation and is unstable.

In the case of using a scaffolding scaffold to solve these problems, it is very difficult to install a scaffolding scaffold with a large size or thickness in a narrow area, because it requires a specialized scaffolding manpower to increase the working time and increase the cost. have.

In the case of the above-mentioned wooden scaffolding or scaffolding, there is a problem in that it is difficult to install a wire that can hang the safety belt. Even if a safety block is installed from the outside to ensure safety and enters the manhole, if there are more than two people, interference between wires occurs and they get caught, so it is very inconvenient to move during inspection.

The above-described information disclosed in the background technology of the present invention is only for improving the understanding of the background of the present invention, and thus may include information that does not constitute the prior art.

It is an object of the present invention to provide a scaffolding device for tube inspection that can be easily installed and used by inserting it into the furnace from the outside of the manhole when inspecting the super heater side of the boiler.

The scaffolding device for checking the tube of the present invention is inserted into the furnace of the boiler to support the user, the first scaffold having a plurality of first connection parts with screw grooves formed on the rear side; and a plurality of second footrests inserted into the furnace of the boiler to support the user and having a front connection part having a screw thread coupled to the first scaffold, and a rear connection part provided in a direction opposite to the front connection part and formed with a screw groove. Including, wherein the front connection part has a cylindrical shape, the screw thread is formed at one end of the outer circumferential surface and gear teeth are formed at the other end of the outer circumferential surface, and the second footrest is toothed-coupled to the gear tooth of the front connection part to the front connection part in a straight direction Further comprising a driving unit for moving forward or backward, the driving unit includes a worm gear.

In addition, the scaffolding device for checking the tube of the present invention is inserted into the furnace of the boiler to support the user, the first scaffold having a plurality of first connection parts with screw grooves formed on the rear side; and a plurality of second footrests inserted into the furnace of the boiler to support the user and having a front connection part having a screw thread coupled to the first scaffold, and a rear connection part provided in a direction opposite to the front connection part and formed with a screw groove. Including, wherein the first scaffold further includes a first upper plate and a first lower plate coupled to each other, and an entry part coupled to one side of the first upper plate and the first lower plate and having a front surface formed in a streamlined shape, and the first connection part is the A plurality of safety rings coupled to the first upper plate and the first lower plate are provided in a direction opposite to the entry part, and a plurality of safety rings to which the safety wire is coupled are formed on one side of the entry part.

According to an embodiment of the present invention, when inserting the scaffolding device from outside the manhole to the inside, the first scaffolding and the second scaffolding are automatically coupled and connected, so there is no need to manually connect a plurality of scaffolds, improving workability and reducing working time shortening effect.

In addition, since the plurality of footrests are firmly coupled to each other, the footrest does not shake during operation, thereby improving work stability and work efficiency.

1 is a perspective view showing a first scaffold of the scaffold device for checking the tube according to an embodiment of the present invention.
Figure 2 is a perspective view showing a second scaffold of the scaffolding device for checking the tube according to an embodiment of the present invention.
Figure 3 is a perspective view showing the coupling and installation state of the scaffolding device for checking the tube according to an embodiment of the present invention.

Examples of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art, and the following examples may be modified in various other forms, and the scope of the present invention is as follows It is not limited to an Example. Rather, these examples are provided so that this disclosure will be more thorough and complete, and will fully convey the spirit of the invention to those skilled in the art.

In addition, in the following drawings, the thickness or size of each layer is exaggerated for convenience and clarity of description, and the same reference numerals in the drawings refer to the same elements. As used herein, the term “and/or” includes any one and any combination of one or more of those listed items. In addition, in the present specification, "connected" means not only when member A and member B are directly connected, but also when member A and member B are indirectly connected by interposing member C between member A and member B. do.

The terminology used herein is used to describe specific embodiments, not to limit the present invention. As used herein, the singular forms may include the plural forms unless the context clearly dictates otherwise. Also, as used herein, “comprise, include” and/or “comprising, including” refer to the recited shapes, numbers, steps, actions, members, elements, and/or groups thereof. It specifies the presence and does not exclude the presence or addition of one or more other shapes, numbers, movements, members, elements and/or groups.

Although the terms first, second, etc. are used herein to describe various members, parts, regions, layers and/or parts, these members, parts, regions, layers, and/or parts are limited by these terms so that they It is self-evident that These terms are used only to distinguish one member, component, region, layer or portion from another region, layer or portion. Accordingly, a first member, component, region, layer, or portion discussed below may refer to a second member, component, region, layer or portion without departing from the teachings of the present invention.

Space-related terms such as “beneath”, “below”, “lower”, “above”, and “upper” refer to an element or feature shown in the drawings and It may be used to facilitate understanding of other elements or features. These space-related terms are for easy understanding of the present invention according to various process conditions or usage conditions of the present invention, and are not intended to limit the present invention. For example, if an element or feature in a figure is turned over, an element or feature described as "below" or "below" becomes "above" or "above". Accordingly, "lower" is a concept encompassing "upper" or "below".

Hereinafter, with reference to the accompanying drawings, it will be described in detail the scaffolding device for checking the tube according to the embodiment of the present invention (hereinafter, for convenience, the proceeding direction of FIG. 3 is forward, and the opposite direction to the moving direction is defined as rear. do).

1 is a perspective view showing a first scaffold of the scaffold device for checking the tube according to an embodiment of the present invention. Figure 2 is a perspective view showing a second scaffold of the scaffolding device for checking the tube according to an embodiment of the present invention. Figure 3 is a perspective view showing the coupling and installation state of the scaffolding device for checking the tube according to an embodiment of the present invention.

As shown in FIGS. 1 to 3 , the tube check scaffolding device 10 according to an embodiment of the present invention is inserted into the manhole 3 connected to the furnace of the boiler 1 such as a power plant and interconnected. It may include a first scaffolding 100 and a plurality of second scaffolding 300 .

As shown in FIG. 1 , the first scaffold 100 includes a first upper plate 110 supporting a user, a first lower plate 120 disposed toward a tube (not shown) in the boiler 1 furnace, and a second It may include an entry part 130 installed on the front side of the first scaffold 100 , and a first connection part 140 provided on the rear side of the first scaffold 100 . The first scaffold 100 is a scaffold disposed most forward when entering the furnace, and one scaffold is used.

The first upper plate 110 is a part that supports the weight of the user, and is made of a metal material to reinforce the strength of the footrest device 10 . For example, the first upper plate 110 may be made of an aluminum material. The first upper plate 110 is formed in a square or rectangular shape, and is coupled to the first lower plate 120 , and the entry part 130 and the first connecting part 140 are coupled between the first lower plate 120 and the first lower plate 120 .

The first lower plate 120 is coupled to the lower surface of the first upper plate 110 and is disposed toward a tube such as a super heater in the furnace. The first lower plate 120 may be made of a wood material to prevent damage to the tube. The first lower plate 120 is also formed in a square or rectangular shape and has the same shape as the first upper plate 110 . In a state in which the first upper plate 110 and the first lower plate 120 are coupled, the entry part 130 is coupled to the front side, and the first connection part 140 is formed to the rear side.

The entry part 130 has one side streamlined and convex toward the front, and the other side is inserted and fixed between the first upper plate 110 and the first lower plate 120 . The shape of the entry part 130 is similar to the streamline shape of the bow. The reason that the entry part 130 has this shape is to prevent it from jamming or interfering with the tube in the furnace. At both ends of the upper side of the entry unit 130, a safety ring 132 that can hang the safety wire 5 is formed, respectively. However, in order to prevent twisting or interference of the safety wire 5 during operation, only one safety wire 5 is hung on the safety ring 132 and used.

The first connection part 140 may be provided between the first upper plate 110 and the first lower plate 120 , or may be provided inside the first upper plate 110 or the first lower plate 120 . The first connection part 140 has a structure in which a plurality of screw grooves are formed in a cylindrical hole. The first connection part 140 is provided as a pair, and is a part into which the front connection part 330 of the second footrest 300, which will be described later, is inserted and screwed together.

As shown in FIG. 2 , the second scaffold 300 is coupled to the rear of the first scaffold 100 , and a plurality of them are interconnected and used. The second scaffold 300 includes a second upper plate 310 and a second lower plate 320 , a front connection part 330 installed on the front side, a driving part 340 connected to the front connection part 330 , and a rear side. It includes a rear connection part 350 installed in the.

The second upper plate 310 is a part supporting the user's weight, and is made of a metal material to reinforce the strength of the scaffolding device 10 . For example, the second upper plate 310 may be made of an aluminum material. The second upper plate 310 is formed in a square or rectangular shape, and is coupled to the second lower plate 320 , and the front connecting part 330 and the rear connecting part 350 are coupled between the second lower plate 320 and the second lower plate 320 .

The second lower plate 320 is coupled to the lower surface of the second upper plate 310 and is disposed toward a tube such as a super heater in the furnace. The second lower plate 320 may be made of a wood material to prevent damage to the tube. The second lower plate 320 is also formed in a square or rectangular shape and has the same shape as the second upper plate 310 . In a state in which the second upper plate 310 and the second lower plate 320 are coupled, the front connection part 330 is coupled to the front side, and the rear connection part 350 is formed to the rear side. The driving unit 340 is installed adjacent to the front connection unit 330 .

The front connection part 330 is a cylindrical bar, and is provided as a pair. The front connection part 330 is formed with a plurality of threads coupled to the rear connection part 350 of the first scaffold 100 or the other second scaffold 300 at one end of the outer circumferential surface. At the other end of the outer circumferential surface, a plurality of gear teeth are formed in an oblique shape and are tooth-coupled to the driving unit 340 .

The front connection part 330 moves forward and protrudes from the inside of the second footrest 300 toward the front side by the driving of the driving part 340 . Although not shown in the drawings, a space in which the front connection part 330 is accommodated may be formed between the second upper plate 310 and the second lower plate 320 when the front connection part 330 is retracted.

The driving unit 340 is provided as a pair in the form of a worm gear. When the user manually rotates the worm gear in a state in which the gear teeth of the front connection part 330 are toothed-coupled to the worm gear having a plurality of gear teeth formed on the outer circumferential surface of the driving unit 340, the worm gear rotates and the front connection part 330 advances. At this time, since the front connection part 330 rotates and advances, the front connection part 330 may be screw-coupled to the first connection part 140 of the first scaffold 100 while the screw thread formed at one end rotates.

Alternatively, the driving unit 340 may include a worm gear, and a rotation shaft that is toothed to the worm gear and moves linearly may be coupled to the front connection unit 330 .

In addition, the front connection part 330 may be coupled to the second scaffold 300 other than the first scaffold 100 . Since each second scaffold 300 is provided with a rear connection part 350 on the rear side, one second scaffold 300 has a front connection part 330 coupled to the rear connection part 350 of the other second scaffold 300 . can be

The rear connection part 350 is provided as a pair, and may be formed between the second upper plate 310 and the second lower plate 320 or formed inside the second upper plate 310 or the second lower plate 320 . . The rear connection part 350 is a part to which another second front connection part 330 is screwed when the plurality of second footrests 300 are connected. Accordingly, the rear connection part 350 has a shape in which a plurality of screw grooves are formed on the inner circumferential surface of the cylindrical hole.

A method of installing and using the scaffolding device 10 for checking the tube of the present invention having the above-described configuration will be described in detail.

As shown in FIG. 3 , a plurality of manholes 3 communicating with the furnace 1 are formed in the boiler 1 . The scaffolding device 10 for tube inspection is assembled through the manhole 3 and inserted into the furnace. The insertion direction is directed downward in the manhole 3, and the movement direction after insertion of the inserted tube inspection scaffolding device 10 is the forward direction of FIG.

First, the safety wire 5 is installed on the safety hook 132 provided in the front entry part 130 of the first scaffold 100 from the outside of the boiler 1, and is fixed to the outside of the boiler 1 ( For convenience, only part of the safety wire is shown in FIG. 3).

Thereafter, the front connection part 330 formed on the front side of the second scaffold 300 is coupled to the first connection part 140 formed on the rear side of the first scaffold 100 . At this time, when the user operates the driving unit 340 , the worm gear rotates and the front connecting unit 330 is rotated and advanced, so that the first scaffold 100 and the second scaffold 300 can be easily and firmly connected.

While inserting the connected first scaffolding 100 and the second scaffolding 300 into the furnace of the boiler 1 through the manhole 3, the second scaffolding 300 continues to be additionally connected as needed.

That is, the front connecting portion 330 of the other second footrest 300 is coupled to the rear connecting portion 350 of the second footrest 300 that is already connected. Also at this time, the two second scaffolding 300 may be connected to each other by driving the driving unit 340 of the second second scaffolding 300 .

As if connecting Lego blocks in this way, by pushing into the manhole 3 while coupling the plurality of second scaffolding 300 to each other, the scaffolding device 10 for checking the tube of the required length can be made.

Since each footrest is firmly coupled to each other, the footrest does not shake, allowing the operator to perform in-furnace inspection work stably.

What has been described above is only one embodiment for carrying out the present invention, and the present invention is not limited to the above-described embodiment, and the present invention is not limited to the above-described embodiment, without departing from the gist of the present invention as claimed in the claims below. Anyone with ordinary skill in the field to which this belongs will say that the technical spirit of the present invention exists to the extent that various modifications can be made.

10: scaffold device for checking tube 100: first scaffold
110: first upper plate 120: first lower plate
130: entry 132: safety hook
140: first connection part 300: second footrest
310: second upper plate 320: second lower plate
330: front connection 340: driving unit
350: rear connection

Claims (2)

a first footrest inserted into the furnace of the boiler to support the user, and having a plurality of first connection parts having screw grooves formed on the rear side; and
It is inserted into the furnace of the boiler to support the user and includes a plurality of second footrests having a screw threaded front connecting portion coupled to the first footrest, and a rear connecting portion provided in a direction opposite to the front connecting portion and formed with a screw groove. do,
The front connection portion has a cylindrical shape, the screw thread is formed at one end of the outer circumferential surface, and gear teeth are formed at the other end of the outer circumferential surface,
The second footrest further includes a driving unit that is tooth-likely coupled to the gear teeth of the front connection part to advance or reverse the front connection part in a linear direction,
The driving unit is a scaffolding device for checking a tube including a worm gear. a first footrest inserted into the furnace of the boiler to support the user, and having a plurality of first connection parts having screw grooves formed on the rear side; and
It is inserted into the furnace of the boiler to support the user and includes a plurality of second footrests having a screw threaded front connecting portion coupled to the first footrest, and a rear connecting portion provided in a direction opposite to the front connecting portion and formed with a screw groove. do,
The first scaffold is
A first upper plate and a first lower plate coupled to each other, and an entry part coupled to one side of the first upper plate and the first lower plate and having a streamlined front surface,
The first connection part is coupled to the first upper plate and the first lower plate and is provided in a direction opposite to the entry part,
A scaffolding device for tube inspection in which a plurality of safety rings to which a safety wire is coupled are formed on one side of the entry part.

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