KR101523927B1 - Apparatus for insulation for anti-corrosion - Google Patents

Abstract

Disclosed is an insulation device for preventing corrosion of a fastening part.
According to an embodiment of the present invention, there is provided an insulation device for preventing corrosion caused by contact between the structure and a fastening means in a fastening portion of a fastening structure to which fastening means are coupled, A first sleeve unit having a neck portion having a neck portion and having a built-in rim formed therein, the rim being discharged to the outside while being broken when compressed; A second sleeve unit having an inner diameter portion corresponding to the through hole of the coupling portion and having a chamber in which an abatement material is embedded and which is broken when compressed and discharged, And a connecting unit connecting the first sleeve unit and the second sleeve unit so as to be spaced apart from each other and having a stem portion having a hollow portion corresponding to the through hole of the fastening portion.

Description

[0001] APPARATUS FOR INSULATION FOR ANTI-CORROSION [0002]

The present invention relates to an insulation device for preventing corrosion of a fastening part, and more particularly, to an insulation device for preventing corrosion of a fastening part to prevent corrosion occurring when a structure and a fastening part are brought into contact with each other at a fastening part of a fastening part .

In general, offshore plants such as drill ships, FPSO (Floating, Production, Storage and Offloading) are inevitably exposed to corrosion and abrasion problems when they are used for a long time at sea. If the same problem occurs, the offshore structures need to be replaced, repaired, and maintained.

Maintenance of offshore structures can be done by replacing the offshore structure as a whole or by repairing the problem areas. In the former case, however, it is difficult to expect the same stability as in the first installation because the economical efficiency is low and the operation is very difficult. In the latter case, There is a problem that this should be done.

On the other hand, the corrosion of the fastening part, which is the background of the invention, can occur in various offshore structures, such as aluminum H beams. A plurality of fastening means can be coupled to the aluminum H beam, where the fastening portion of the aluminum H beam to which the fastening means is coupled can often be corroded upon contact between the fastening portion and the fastening means.

Since the marine atmospheric environment in which an offshore structure is installed is a high humidity state including chloride, a thin film is formed around a joint portion of a structure (for example, an aluminum H beam) to which a fastening means such as a bolt and a nut is coupled, Corrosion may occur in the fastening portion of the screw.

Since the fastening means to be bonded to the aluminum H beam is mostly steel, the contact between different materials such as aluminum and steel can lead to galvanic corrosion in particular.

For reference, when two dissimilar materials (metals) are brought into contact with each other, a potential difference exists, and thus, electrons can move between them. So the rate of erosion of metal with ear potential is reduced and the rate of erosion of metal with active potential is promoted. Here, the former becomes the cathode and the latter becomes the anode. This type of corrosion is called galvanic corrosion or dissimilar metal contact corrosion.

If galvanic corrosion occurs in the connecting part of the offshore structure, not only the overall strength of the aluminum H beam is lowered but also the bonding strength with other structures fastened to the aluminum H beam is reduced, which may cause serious problems that impede the stability of the structure However, there is no countermeasure against this.

Korea public utility model 20-1998-010555

Embodiments of the present invention provide an insulation device for preventing corrosion of a fastening part that can completely prevent corrosion that may frequently occur in a fastening part of a structure to which fastening means are coupled.

Embodiments of the present invention also provide an insulation device for preventing corrosion of a fastening part that can completely prevent galvanic corrosion that may be caused by contact between dissimilar materials in a structure to which fastening means are coupled.

In addition, embodiments of the present invention provide an insulation device for preventing corrosion of a fastening part to prevent corrosion when a fastening part is fastened to a fastening part of a structure to which fastening means is coupled, do.

According to an aspect of the present invention, there is provided an insulation device for preventing corrosion caused by contact between the structure and a fastening means in a fastening portion of a fastening structure to which the fastening means is coupled, A first sleeve unit having an inner diameter portion, a chamber in which a corrosive material is embedded, a first sleeve unit in which the sanitary material is discharged to the outside while being broken upon compression; A second sleeve unit having an inner diameter portion corresponding to the through hole of the coupling portion and having a chamber in which an abatement material is embedded and which is broken when compressed and discharged, And a connecting unit connecting the first sleeve unit and the second sleeve unit so as to be spaced apart from each other and having a stem portion having a hollow portion corresponding to the through hole of the fastening portion.

At this time, the inner diameter portion of the first sleeve unit and the inner diameter portion of the second sleeve unit have hooking grooves formed along the inner circumferential surface thereof, and both ends of the stem of the connecting unit are formed with hooking jaws .

In addition, the latching grooves are respectively formed in the lower portion of the first sleeve unit and the upper portion of the second sleeve unit, and the engaging jaw may be formed with a beveled surface so as to easily enter the latching groove.

In addition, the chamber may be formed with a closed space along an edge of the inner diameter portion.

The notches may be formed on the outer surfaces of the first sleeve unit and the second sleeve unit such that the surface material is locally reduced in thickness so that the pressure member is easily discharged to the outside when compressed.

Further, the length of the stem portion may be set to correspond to the thickness of the structure.

According to the embodiment of the present invention, when the fastening means is attached to the fastening portion of the structure to which the fastening means is coupled, the caulking material stored therein is discharged to the outside, and the periphery of the fastening portion is coated to form an oil film. This prevents direct contact between the structure and the fastening means at the fastening portion, thereby preventing corrosion from occurring.

According to the embodiment of the present invention, galvanic corrosion which can be caused by contact between different kinds of materials can be completely prevented.

1 is an exploded perspective view showing an insulation device for a fastening part according to an embodiment of the present invention,
FIG. 2 is an exploded cross-sectional view of an insulation device for a fastening part according to an embodiment of the present invention,
FIG. 3 is an exploded perspective view showing an insulation device for a fastening part according to an embodiment of the present invention,
FIG. 4 is an assembled cross-sectional view of an insulator for a fastening part according to an embodiment of the present invention,
FIG. 5 is a state before assembly showing a state before the fastening part is fastened to the fastening part of the structure together with the fastening part, according to an embodiment of the present invention. FIG.
FIG. 6 is a state after assembly showing a state in which a fastening part is fastened to a fastening part together with a fastening part, according to an embodiment of the present invention. FIG.
FIG. 7 is an operational state diagram showing a state where the sealing material built in the insulation device for preventing the corrosion of the fastening part according to the embodiment of the present invention is fully tightened by fastening means in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing the present embodiment, the same reference numerals and symbols are used for the same components, and further description thereof will be omitted.

First, an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.

FIG. 1 is an exploded perspective view showing an insulation device for preventing corrosion of a fastening part according to an embodiment of the present invention, FIG. 2 is an exploded cross-sectional view of an insulation device for fastening part corrosion prevention according to an embodiment of the present invention, FIG. 4 is an assembled cross-sectional view of an insulator for a fastening part according to an embodiment of the present invention. FIG. 4 is an exploded perspective view of an insulation device for a fastening part according to an embodiment of the present invention.

1 to 4, a fastening part corrosion preventing insulation device 100 according to an embodiment of the present invention includes a first sleeve unit 110, a second sleeve unit 120 and a connecting unit 130, . ≪ / RTI >

5, the structure 20 (for example, an aluminum H beam) to which the fastening means 10 (for example, the bolt 11 and the nut 12) To an insulation device (100) for preventing corrosion caused by direct contact between a structure (20) and a fastening means (10).

This embodiment particularly relates to an insulation device for preventing galvanic corrosion which occurs when the structure 20 is made of, for example, an aluminum H beam, and which is formed during the contact between the fastening means 10 made of steel bonded to the aluminum H beam 100).

The first sleeve unit 110 may have an inner diameter portion 111 having a size corresponding to the through hole 21 formed in the coupling portion A so that the coupling means 10 can be coupled thereto. Therefore, the fastening means 10 can pass through the inner diameter portion 111 of the first sleeve unit 110. [

The first sleeve unit 110 may be provided with a chamber 112 in which a corrosion resistant material G is stored. The chamber 112 may be formed in a predetermined closed space along the edge of the inner diameter portion 111, As shown in Fig.

When the first sleeve unit 110 receives external force, the first sleeve unit 110 is automatically broken when the external force is applied to the first sleeve unit 110. As a result, the gauze G embedded in the chamber 112 flows out to the outside, So that the galvanic corrosion can be prevented by preventing the structure 20 made of different materials and the fastening means 10 from coming into contact with each other.

The second sleeve unit 120 has the same structure and configuration as those of the first sleeve unit 110 as described above. The second sleeve unit 120 is also connected to the through hole 21 of the fastening portion A. [ And the abrasive G is broken in the same manner as the first sleeve unit 110 when the abutting member G is pressed against the abutting member G, The first sleeve unit 110 and the second sleeve unit 120 may be disposed on different sides of the structure 20 during installation.

Although the same configuration names are used for the same functions and functions in the first sleeve unit 110 and the second sleeve unit 120, different reference numerals are used for distinguishing between the same names even if they have the same name.

The connecting unit 130 is configured to connect the first sleeve unit 110 and the second sleeve unit 120 such that the first sleeve unit 110 and the second sleeve unit 120 are spaced from each other. The connecting unit 130 is provided with a through hole 21 of the fastening part A, A stem portion 132 having a hollow portion 131 corresponding to the hollow portion 131 may be provided.

The hollow portion 131 corresponds to the shaft diameter of the fastening means 10 so that the fastening means 10 can pass through the hollow portion 131 like the inner diameter portion 111 of the first sleeve unit 110 and the second sleeve unit 120 And the stem 132 may be substantially the same as the first sleeve unit 110 and the second sleeve unit 120. The stem unit 132 may be configured to connect the first sleeve unit 110 and the second sleeve unit 120, The distance between the unit 110 and the second sleeve unit 120 can be adjusted.

The length of the stem portion 132 may be set to correspond to the thickness of the structure 20 in which the first sleeve unit 110 and the second sleeve unit 120 are to be installed.

2, the inner diameter portion 111 of the first sleeve unit 110 and the inner diameter portion 121 of the second sleeve unit 120 are provided with engaging grooves recessed at a predetermined depth along the inner circumferential surface thereof 113, and 123, respectively.

The latching grooves 113 and 123 may be formed at the lower portion of the inner diameter portion 111 of the first sleeve unit 110 and may be formed at the upper portion of the inner diameter portion 121 of the second sleeve unit 120.

1 and 2, a locking protrusion 133 protruding outward by a predetermined amount so as to be elastically coupled to the locking groove 113 is formed at both ends of the stem portion 132 of the connecting unit 130, Can be formed.

The engaging jaw 133 may be provided with an oblique surface 133a for allowing the engaging groove 113 of the first sleeve unit 110 and the engaging groove 113 of the second sleeve unit 120 to easily enter and engage with each other. have.

Here, the connecting unit 130 is formed so that the engaging jaws 133 of the connecting unit 130 can be easily engaged with the engaging grooves 113, 123 of the first sleeve unit 110 and the second sleeve unit 120, respectively For example, the connecting unit 130 may be made of rubber or soft synthetic resin.

Here, the connecting unit 130 may be made of a flexible material, and the stem 132 may be a rigid body, which can be selected as desired by the practitioner. Do.

In addition, the first sleeve unit 110 and the second sleeve unit 120 may be made of rubber or soft synthetic resin as a whole, so that the first sleeve unit 110 and the second sleeve unit 120 can be easily released when pressed from the outside.

At this time, the first sleeve unit 110 and the second sleeve unit 120 may be formed so that the gauze material G stored in each of the chambers 112 of the first sleeve unit 110 and the second sleeve unit 120 can easily flow out to the outside. The notches 114 and 124 may be formed on the outer surface of the unit 120.

The notched portions 114 and 124 are formed by locally reducing the surface thickness of the corresponding structure so that stress concentration occurs in the notched portions 114 and 124 when the first sleeve unit 110 and the second sleeve unit 120 are pressed The notch portions 114 and 124 are broken first so that the gauze G stored therein can be easily discharged to the outside.

Here, the notched portions 114 and 124 have a size that is hardly discernible to the naked eye, and can be finely and precisely processed in units of micrometers.

On the other hand, the gauze material G is applied to the periphery of the fastening part A to prevent the periphery of the fastening part A from being corroded by forming a thin oil film when it flows out, But it may be a liquid or gel-like lubricant so that the first sleeve unit 110 and the second sleeve unit 120 can easily be discharged to the outside when the first sleeve unit 110 and the second sleeve unit 120 are broken. Therefore, grease can be used for the gauze material G. [

Hereinafter, the operation of the insulator 100 for the fastening part corrosion prevention device according to the embodiment of the present invention will be described with reference to FIGS. 5 to 7. FIG.

FIG. 5 is a state before assembly showing a state before the fastening part is fastened to the fastening part together with the fastening part according to the embodiment of the present invention. FIG. 6 is a cross- FIG. 7 is a cross-sectional view illustrating a state where the insulation unit for preventing corrosion is fastened to the fastening unit of the structure together with the fastening unit. FIG. 7 is a cross-sectional view of the insulation unit for fastening corrosion prevention according to an embodiment of the present invention, Which is a functional state diagram showing a state in which a humectant film built in the apparatus forms a film.

The fastening part corrosion preventing insulation device 100 according to an embodiment of the present invention is used in a fastening part A of a structure 20 to which fastening means 10 (for example, a bolt 11 and a nut 12) The structure 20 at this time may be made of any metal material, but it may be excellent for preventing galvanic corrosion especially when it is an aluminum H beam supporting the pancake portion of the helideck.

The fastening means 10 may also be various. In the present embodiment, the bolt 11 and the nut 12 will be described as an example to facilitate the understanding and understanding of the present invention.

The fastening portion A means a portion where the bolts 11 and the nuts 12 are coupled to each other in the structure 20. The single fastening portion A may exist in one structure 20 There may be a plurality of fastening portions A. In FIGS. 5 to 7, only one fastening portion A is shown as an area for the sake of convenience.

5, the fastening part A of the structure 20 to which the bolts 11 and the nuts 12 are to be coupled is provided with the fastening part corrosion preventing device 100 according to the present embodiment Are arranged as shown in Fig.

That is, the first sleeve unit 110 and the second sleeve unit 120 are disposed so as to be in contact with different surfaces of the structure 20, (The second sleeve unit 120 in the drawing) may be previously coupled to the connecting unit 130. [

6, the stem portion 132 of the connecting unit 130 is inserted into the through hole 21 of the structure 20, and the first sleeve unit 110 is inserted into the through- So that the connecting unit 130 and the first sleeve unit 110 are coupled to each other by engaging the hook 133 at one end of the stem unit 132.

When the installation of the first sleeve unit 110, the second sleeve unit 120 and the connecting unit 130 is completed in the vicinity of the through hole 21 of the structure 20, that is, the fastening portion A of the structure 20 The bolts 11 are inserted so as to penetrate the inner diameter portions 111 and 121 of the first and second sleeve units 120 and the hollow portion 131 of the connecting unit 130 and the nuts 12 are inserted into the ends of the bolts 11 So that a state as shown in Fig. 6 is obtained.

6, when the bolts 11 and the nuts 12 are tightened, the bolts 11 and the nuts 12 press the first sleeve unit 110 and the second sleeve unit 120, respectively, When the compression force applied to the first sleeve unit 110 and the second sleeve unit 120 is increased, the first sleeve unit 110 and the second sleeve unit 120 are destroyed, and the gauze G stored in the first sleeve unit 110 and the second sleeve unit 120, And is applied around the fastening portion A of the structure 20 to form an oil film H as shown in FIG. In FIG. 7, the thickness of the oil film H is greatly enlarged for the sake of understanding, but in reality, a very thin film is formed. Therefore, a minute gap exists in the fastening means 10 and the structure 20.

The oil film H formed on the fastening portion A of the structure 20 is formed in a minute gap generated between the fastening means 10 and the structure 20 so that the fastening means 10 and the structure 20 are in direct contact with each other And prevents corrosion even if the structure 20 and the fastening means 10 are made of different materials. Therefore, it is possible to prevent galvanic corrosion, which is often caused by contact between dissimilar materials, .

While the present invention has been described with reference to the exemplary embodiments, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. Those skilled in the art will appreciate that various modifications, Elements can be substituted and changed, which also belongs to the present invention.

10: fastening means 20: structure
100: Insulation device for corrosion prevention of fastening part
110: first sleeve unit 111: inner sleeve
112: chamber 113:
114: notch 120: second sleeve unit
121: inner neck 122: chamber
123: latching groove 124: notch portion
130: connecting unit 131: hollow
132: stem portion 133:

Claims (6)

An insulation device for preventing corrosion of a fastening part to prevent corrosion occurring when the structure and a fastening device come into contact with each other in a fastening part of a structure to which fastening means is coupled,
A first sleeve unit having an inner diameter portion having a dimension smaller than the through hole of the coupling portion and having a chamber in which an abatement material is embedded and which is broken when compressed and discharged,
A second sleeve unit having an inner diameter portion having a dimension smaller than a through hole of the coupling portion and having a chamber in which a corrosive material is embedded and which is broken when compressed and discharged, And
A connecting unit connecting the first sleeve unit and the second sleeve unit so as to be spaced apart and having a hollow portion and a stem portion having a dimension smaller than a through hole of the coupling portion;
And an insulating member for preventing corrosion of the fastening portion. The method according to claim 1,
Wherein an inner diameter portion of the first sleeve unit and an inner diameter portion of the second sleeve unit have hooking grooves formed along the inner circumferential surface thereof and both ends of the stem of the connecting unit are provided with engaging jaws Insulation device for corrosion prevention. 3. The method of claim 2,
Wherein the engaging grooves are respectively formed in a lower portion of the first sleeve unit and an upper portion of the second sleeve unit, and the engaging jaw is provided with a beveled surface so as to easily enter the engaging groove. The method according to claim 1,
Wherein the chamber is formed along an edge of the inner diameter portion. The method according to claim 1 or 4,
Wherein the outer surface of the first sleeve unit and the outer surface of the second sleeve unit include a notch portion whose surface thickness is locally reduced so that the stopper can be easily discharged to the outside when compressed. 3. The method of claim 2,
Wherein a length of the stem portion is set to have a thickness including the thickness of the through hole and the thickness of the lower portion of the engaging groove of the first sleeve unit and the thickness of the engaging groove of the second sleeve unit.

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