Tensile testing apparatus of tension regulator for mooring offshore structure

Abstract

The present invention relates to a tensile testing apparatus of a tension regulator for mooring an offshore structure, the tensile testing apparatus comprising: a rectangular frame-shaped body that has an open interior; a protruding member that is installed and fixed to the inner surface of one end portion of the body in the longitudinal direction, and has a tip in the shape of an arc with a constant curvature; a connection member that is coupled to a tip portion of the protruding member by fastening with a fastening member, and is connected to the tension regulator for mooring the offshore structure; a movable member that is slidably arranged on the inside of the other end portion of the body in the longitudinal direction, and is connected to a chain extending from the tension regulator for mooring the offshore structure; and a pair of cylinders that are installed and fixed between the connection member and the movable member, and push or pull the movable member via the entry and exit of a rod due to hydraulic action.

Description

Tension testing device for tension regulators used for mooring offshore structures

[0001] The present invention relates to a tensile testing device, and more specifically, to a tensile testing device for a tension regulator for mooring an offshore structure that not only facilitates tensile testing of the tension regulator for mooring an offshore structure but also, in particular, enables tensile testing to be performed while varying the mounting angle of the tension regulator for mooring an offshore structure.

[0002] In the case of offshore structures, such as offshore wind turbines, they are affected by waves and currents due to their location at sea.

[0003] Therefore, as marine structures move due to the influence of waves and currents, if they move excessively, they may not only be lost but also damaged by falling over.

[0004] Accordingly, marine structures are fixed at a specific point on the sea using various mooring devices or mooring systems.

[0005] Meanwhile, a chain extending from the seabed, more specifically a fairlead chain, is connected to the offshore structure where mooring takes place, so the offshore structure can be fixed at one point by the restraint provided by the chain.

[0006] In this case, if the chain extending from the seabed to the offshore structure is loose, the restraint of the offshore structure by the chain may become unstable, and consequently, the mooring of the offshore structure may be unstable.

[0007] For this reason, a tension regulator, such as a ‘fairlead chain stopper’ or ‘submersible mooring pulley’ as disclosed in Korean Patent Publication No. 10-2023-0137721, is connected to the middle of a marine structure or chain.

[0008] Therefore, the tension of the chain can be adjusted by pulling one end of the chain connected to the fairlead chain stopper or submersible mooring pulley, thereby allowing the mooring of the offshore structure to be maintained stably.

[0009] However, since loads of hundreds of tons or more are applied to the chain connection parts of the tension regulators used for mooring offshore structures, if the durability is insufficient, they may be damaged.

[0010] To resolve such problems, it is necessary to apply mooring tension regulators for offshore structures to offshore structures, etc., after verifying their durability through tensile testing of the completed offshore structure mooring tension regulators.

[0011] However, since the tension regulators for mooring offshore structures are extra-large, there was a problem in that tensile testing was difficult using standard tensile testing equipment.

[0012] In particular, since tension regulators for mooring offshore structures can be connected at different mounting angles depending on the size of the offshore structure, tensile tests also need to be conducted at varying mounting angles; however, there was a problem in that general tensile testing devices were unsuitable for tensile testing of offshore structure mooring tension regulators because the mounting angle of the test object is limited.

[0013] For the reasons mentioned above, the relevant field is attempting to develop a tensile testing device for offshore structure mooring tension regulators that not only facilitates tensile testing of the tension regulators but also allows for testing to be performed with varying mounting angles; however, satisfactory results have not been obtained to date.

[0014]

[0015] [Prior Art Literature]

[0016] [Patent Literature]

[0017] (Patent Document 1) Republic of Korea Published Patent No. 10-2023-0137721

[0018] The present invention is proposed to resolve the problems of the prior art as described above, and aims to provide a tensile testing device for a tension regulator for mooring offshore structures that not only allows for easy tensile testing of the tension regulator for mooring offshore structures but also, in particular, enables tensile testing to be performed while varying the mounting angle of the tension regulator for mooring offshore structures.

[0019] To achieve the above objective, the present invention,

[0020] A tensile testing device for a tension regulator for mooring an offshore structure is proposed, characterized by comprising: a body in the form of a square frame with an open inner side; a protruding member fixedly installed on the inner surface of one end in the longitudinal direction of the body, the tip of which forms an arc shape with a constant curvature; a connecting member coupled to the tip of the protruding member by fastening a fastening member and connected to a tension regulator for mooring an offshore structure; a movable member slidably disposed on the inner surface of the other end in the longitudinal direction of the body and connected to a chain extending from the tension regulator for mooring an offshore structure; and a pair of cylinders fixedly installed between the connecting member and the movable member, which push or pull the movable member through the movement of a rod according to hydraulic action.

[0021] The tensile testing device for a tension regulator for mooring an offshore structure according to the present invention has one end of the tension regulator for mooring an offshore structure connected to a connecting member, and a chain extending from the tension regulator for mooring an offshore structure connected to a movable member, wherein the movable member moves back and forth within a body by the operation of a pair of cylinders, and as the movable member moves forward by the operation of the cylinders, the chain extending from the tension regulator for mooring an offshore structure can be pulled, thereby allowing the tensile testing of the tension regulator for mooring an offshore structure to be performed simply.

[0022] The tensile testing device for a tension regulator for mooring a marine structure according to the present invention allows each opening of a connecting member to selectively align with one of the through holes formed at the tip of a protruding member and the other. Since the mounting angle of the tension regulator for mooring a marine structure connected to the connecting member can be varied by changing the position where the opening of the connecting member and the through hole of the protruding member align, a tensile test can be performed while varying the mounting angle of the tension regulator for mooring a marine structure.

[0023] FIG. 1 is a perspective view showing the external appearance of a tensile testing device for a tension regulator for mooring offshore structures according to the present invention.

[0024] FIG. 2 is an exemplary diagram showing a form in which a tension regulator for mooring an offshore structure is combined with a tension regulator for mooring an offshore structure according to the present invention.

[0025] FIG. 3 is an example diagram showing different angle mountings of a tension regulator for mooring offshore structures in a tensile testing device for a tension regulator for mooring offshore structures according to the present invention.

[0026] FIG. 4 is an example diagram showing the forward and backward movement of a movable member in a tension test device for mooring a marine structure according to the present invention.

[0027] FIG. 5 is an exemplary diagram showing the connection between a connecting member and a tension regulator for mooring an offshore structure in a tensile testing device for a tension regulator for mooring an offshore structure according to the present invention.

[0028] FIG. 6 is an exemplary diagram showing a chain connection to a movable member in a tensile testing device for a tension regulator for mooring a marine structure according to the present invention.

[0029] FIG. 7 is an exemplary diagram showing a form in which another tension regulator for mooring a marine structure is combined with a tension regulator for mooring a marine structure according to the present invention.

[0030] The present invention will be described in detail below with reference to the attached drawings.

[0031]

[0032] As illustrated in FIG. 1, the tensile testing device (A) for a tension regulator for mooring a marine structure according to the present invention comprises a body (10); a protruding member (20); a connecting member (30); a movable member (40); and a cylinder (50).

[0033] The body (10) of the present invention forms a square frame shape with an open inner side.

[0034] Accordingly, a protruding member (20), a connecting member (30), a movable member (40), and a cylinder (50) can be arranged inside the body (10).

[0035] At this time, the body (10) includes a transverse section (11) that crosses one end in the longitudinal direction, so that the cylinder (50) can be supported by the transverse section (11).

[0036] Here, the transverse section (11) includes an opening (11a) that extends between one side facing the protruding member (20) and one side facing the movable member (40), so that when the connecting member (30) is coupled to the protruding member (20) and the tension regulator (100) for mooring the marine structure is connected to the connecting member (30), the chain (110) extending from the tension regulator (100) for mooring the marine structure can be connected to the movable member (40) through the opening (11a).

[0037] And the body (10) includes a support (12) placed at multiple points on the bottom surface, so that the body (10) and the ground can be spaced apart by the support of the support (12), making it easy to connect the connecting member (30) to the protruding member (20) and to connect the tension regulator (100) for mooring the marine structure to the connecting member (30).

[0038] And the body (10) includes a pair of guide grooves (13) arranged facing each other on one inner surface and the other inner surface, so that as one end and the other end of the movable member (40) are fitted into each guide groove (13), the movable member (40) can slide stably while preventing sagging.

[0039] The protruding member (20) of the present invention is fixedly installed on the inner surface of one end in the longitudinal direction of the body (10), and the tip forms an arc shape with a constant curvature.

[0040] Therefore, the connection of the connecting member (30) can be achieved by the protruding member (20).

[0041] At this time, the protruding member (20) includes a first through hole (21), a second through hole (22), a third through hole (23), and a fourth through hole (24) formed at a spaced interval at the tip, so that each of the openings (31) of the connecting member (30) described below aligns with one of the first through hole (21), the second through hole (22), the third through hole (23), and the fourth through hole (24) and inserts a fastening member (33), thereby enabling the connection between the protruding member (20) and the connecting member (30).

[0042] Here, the distance from the center of the first through hole (21) to the center of the third through hole (23) and the distance from the center of the second through hole (22) to the center of the fourth through hole (24) are the same, so that the opening (31) of the connecting member (30) that corresponds to the first through hole (21) and the third through hole (23) can also correspond to the second through hole (22) and the fourth through hole (24).

[0043] And the protruding member (20) includes a connecting shaft (25) that extends between the upper surface and the lower surface, so that a tension regulator (100) for mooring a marine structure, more specifically a chain (110) extending from one end of a submersible mooring pulley is connected to the connecting shaft (25), thereby allowing the submersible mooring pulley to be connected to the protruding member (20).

[0044] At this time, the connecting shaft (25) is separable from the protruding member (20), so that the separated connecting shaft (25) is fitted into the protruding member (20) and passes through the chain (110), thereby enabling connection with the chain (110).

[0045] The connecting member (30) of the present invention is coupled to the tip of the protruding member (20) by fastening the fastening member (33).

[0046] Therefore, the tension regulator (100) for mooring a marine structure can be connected by the connecting member (30).

[0047] At this time, the connecting member (30) includes a pair of openings (31) formed at a distance from each other at a longitudinal end located closer to the protruding member (20), so that each of the openings (31) aligns with one of the first through hole (21), second through hole (22), third through hole (23), and fourth through hole (24) formed in the protruding member (20), and then the connecting member (30) can be coupled to the protruding member (20) by inserting the fastening member (33).

[0048] Here, each of the openings (31) may correspond to the first through hole (21) and the third through hole (23), but is not limited thereto.

[0049] That is, each of the openings (31) may correspond to the second through hole (22) and the fourth through hole (24).

[0050] In this way, as each of the openings (31) selectively matches one of the first through hole (21), the second through hole (22), the third through hole (23), and the fourth through hole (24) with the other, the mounting angle of the tension regulator (100) for mooring a marine structure connected to the connecting member (30), more specifically the fairlead chain stopper, can be changed.

[0051] Meanwhile, the distance between the center of one of the openings (31) and the center of the other is the same as the distance between the center of the first through hole (21) and the center of the third through hole (23) of the protruding member (20), so that when one of the openings (31) coincides with the first through hole (21), the other of the openings (31) can coincide with the third through hole (23).

[0052] And the connecting member (30) includes a connecting shaft (32) that is coupled to another end in the longitudinal direction located further away from the protruding member (20), so that the connecting shaft (32) penetrates a part of the tension regulator (100) for mooring offshore structures, more specifically, the fairlead chain stopper, thereby allowing the connection of the fairlead chain stopper to be made.

[0053] At this time, a hole (not shown in the drawing) is formed in a part of the tension regulator (100) for mooring a marine structure through which the connecting shaft (32) passes, so that the connecting shaft (32) can pass through the hole.

[0054] Here, the connecting shaft (32) is separable from the connecting member (30), so that it can be smoothly inserted into the hole of the tension regulator (100) for mooring an offshore structure.

[0055] The movable member (40) of the present invention is slidably disposed on the inner side of the other end portion in the longitudinal direction of the body (10) and is connected to a chain (110) extending from a tension regulator (100) for mooring a marine structure.

[0056] Accordingly, a tensile test of the tension regulator (100) for mooring an offshore structure can be performed by the movable member (40) sliding in one direction, more specifically by advancing and pulling the chain (110).

[0057] At this time, the movable member (40) includes a holder (41) disposed on one side facing the connecting member (30), so that the holder (41) grips and fixes the chain (110) extending from the tension regulator (100) for mooring the marine structure, thereby enabling the connection of the chain (110) extending from the tension regulator (100) for mooring the marine structure.

[0058] Here, the holder (41) may be of any ordinary structure and type as long as it can grip and secure the chain (110), and an example thereof may be a shackle.

[0059] The cylinder (50) of the present invention is provided in pairs and fixedly installed between the connecting member (30) and the movable member (40), and pushes or pulls the movable member (40) through the movement of the rod (51) according to hydraulic action.

[0060] Therefore, the forward and backward sliding of the movable member (40) can be achieved by operating the cylinder (50).

[0061] Meanwhile, the cylinder (50) can be positioned between the connecting member (30) and the movable member (40) by being fixedly installed on the transverse portion (11) of the body (10).

[0062] And since the entry and exit width of the rod (51) is the same for one cylinder (50) and the other, tilting of the movable member (40) can be prevented when the rod (51) of each cylinder (50) enters and exits, so that the sliding of the movable member (40) can be smooth.

[0063]

[0064] The tensile test of the tension regulator (100) for mooring a marine structure through the tensile test device (A) for the tension regulator for mooring a marine structure according to the present invention is described in detail as follows.

[0065] In the present invention, a connecting member (30) is coupled to a protruding member (20) located on the inner side of one end portion in the longitudinal direction of the body (10).

[0066] At this time, the connecting member (30) includes a connecting shaft (32) that is connected to another end in the longitudinal direction located further away from the protruding member (20), and as shown in FIG. 5, the connecting shaft (32) passes through a hole formed in a part of the tension regulator (100) for mooring a marine structure, more specifically, the fairlead chain stopper, so that the fairlead chain stopper can be connected to the connecting member (30) as shown in FIG. 2.

[0067] Here, the connecting member (30) is separable from the protruding member (20), and the protruding member (20) includes a connecting shaft (25) that extends between the upper surface and the lower surface. When the connecting member (30) is separated, a tension regulator (100) for mooring an offshore structure, more specifically a chain (110) extending from one end of a submersible mooring pulley, is connected to the connecting shaft (25), thereby allowing the submersible mooring pulley to be connected to the protruding member (20) as shown in FIG. 7.

[0068] And in the present invention, a movable member (40) is located on the inner side of the other end portion in the longitudinal direction of the body (10).

[0069] At this time, the movable member (40) includes a holder (41) disposed on one side facing the connecting member (30), and as shown in FIG. 6, the holder (41) can be connected to the movable member (40) by gripping and fixing the chain (110) extending from the tension regulator (100) for mooring a marine structure connected to the connecting member (30) or the protruding member (20).

[0070] In addition, in the present invention, a cylinder (50) is fixedly installed between the connecting member (30) and the movable member (40). As shown in FIG. 4, the rod (51) of each cylinder (50) protrudes due to hydraulic action, and as the movable member (40) advances, the chain (110) connected from the tension regulator (100) for mooring a marine structure is pulled, thereby allowing a tensile test of the tension regulator (100) for mooring a marine structure to be performed.

[0071] Here, since the entry and exit width of the rod (51) is the same for one cylinder (50) and the other, tilting of the movable member (40) can be prevented when the rod (51) of each cylinder (50) enters and exits, so that the sliding of the movable member (40) can be smooth.

[0072] In addition, one end and the other end of the movable member (40) are fitted into each of a pair of guide grooves (13) that are positioned facing each other on the inner surface of one body (10) and the inner surface of the other body (10), so that the movable member (40) is prevented from sagging by the guide grooves (13) and sliding can be performed stably.

[0073] Meanwhile, the tensile testing device (A) for a tension regulator for mooring a marine structure according to the present invention can perform a tensile test by varying the mounting angle of the tension regulator (100) for mooring a marine structure, more specifically, the fairlead chain stopper.

[0074] That is, the protruding member (20) of the present invention has a first through hole (21), a second through hole (22), a third through hole (23), and a fourth through hole (24) formed at intervals at a leading end forming an arc shape of a certain curvature, and the connecting member (30) of the present invention includes a pair of openings (31) formed at intervals at a longitudinal end located closer to the protruding member (20), and each of the openings (31) of the connecting member (30) selectively corresponds to one of the first through hole (21), the second through hole (22), the third through hole (23), and the fourth through hole (24) and the other, so that the fastening member (33) is inserted by aligning each of the openings (31) of the connecting member (30) with the first through hole (21) and the third through hole (23), or each of the openings (31) of the connecting member (30) with the second through hole (22) and By inserting the fastening member (33) into the fourth through hole (24), the coupling angle of the connecting member (30) that is coupled with the protruding member (20) can be varied, and thus the mounting angle of the fairlead chain stopper connected to the connecting member (30) can be varied as shown in FIG. 3.

[0075] Therefore, by varying the mounting angle of the fairlead chain stopper and performing a tensile test, the evaluation of durability and other properties through the tensile test can be performed more accurately.

[0076] At this time, since the distance between the center of one of the openings (31) of the connecting member (30) and the center of the other is the same as the distance between the center of the first through hole (21) and the center of the third through hole (23) of the protruding member (20), when one of the openings (31) coincides with the first through hole (21), the other of the openings (31) can coincide with the third through hole (23).

[0077] And since the distance from the center of the first through hole (21) of the protruding member (20) to the center of the third through hole (23) and the distance from the center of the second through hole (22) to the center of the fourth through hole (24) are the same, each opening (31) of the connecting member (30) that corresponds to the first through hole (21) and the third through hole (23) can also correspond to the second through hole (22) and the fourth through hole (24).

[0078]

[0079] The present invention, as described above, is not limited to the embodiments described above and may be modified within the scope that does not deviate from the essence of the invention claimed in the claims, and such modifications fall within the scope of protection of the present invention as defined by the claims below.

[0080]

[0081] [Explanation of the symbol]

[0082] 10 : Body 11 : Transverse section

[0083] 11a : Opening 12 : Base

[0084] 13 : Guide groove 20 : Protruding member

[0085] 21: First Communion 22: Second Communion

[0086] 23: Third Communion 24: Fourth Communion

[0087] 25 : Coupling shaft 30 : Connecting member

[0088] 31 : Opening 32 : Connecting shaft

[0089] 33 : Fastening member 40 : Movable member

[0090] 41 : Holder 50 : Cylinder

[0091] 51 : Load 100 : Tension adjuster

[0092] 110 : Chain A : Tensile testing device

[0093] The present invention not only allows for easy tensile testing of a tension regulator for mooring offshore structures, but also enables tensile testing to be performed with different mounting angles of the tension regulator for mooring offshore structures, thereby having industrial applicability related to the production of a tensile testing device for a tension regulator for mooring offshore structures.

Claims

1. A body in the shape of a square frame with an open interior; A protruding member fixedly installed on the inner surface of one end in the longitudinal direction of the above body, wherein the tip forms an arc shape of a constant curvature; A connecting member that is coupled to the tip of the protruding member by fastening a fastening member and connected to a tension regulator for mooring a marine structure; A movable member slidably disposed on the inner side of the other end portion in the longitudinal direction of the above body and connected to a chain extending from the tension regulator for mooring the marine structure; and A tensile testing device for a tension regulator for mooring an offshore structure, characterized by including a pair of cylinders fixedly installed between the connecting member and the movable member, which push or pull the movable member through the movement of a rod according to hydraulic action.

2. In Paragraph 1, A tensile testing device for a tension regulator for mooring offshore structures, characterized in that the above-described body includes a pair of guide grooves arranged facing each other on one inner surface and the other inner surface.

3. In Paragraph 1, A tensile testing device for a tension regulator for mooring an offshore structure, characterized in that the above-mentioned protruding member includes a first through hole, a second through hole, a third through hole, and a fourth through hole formed at a spaced interval at the tip.

4. In Paragraph 3, A tensile testing device for a tension regulator for mooring an offshore structure, characterized in that the distance from the center of the first through hole to the center of the third through hole and the distance from the center of the second through hole to the center of the fourth through hole are the same.

5. In Paragraph 1, A tensile testing device for a tension regulator for mooring offshore structures, characterized in that the above-mentioned protruding member includes a connecting shaft connecting the upper surface and the lower surface.

6. In Paragraph 1, A tensile testing device for a tension regulator for mooring an offshore structure, characterized in that the above connecting member includes a pair of openings formed at a distance from each other at a longitudinal end located closer to the above protruding member.

7. In Paragraph 1, A tensile testing device for a tension regulator for mooring offshore structures, characterized in that the above-mentioned movable member includes a holder that grips and fixes the chain.

8. In Paragraph 1, A tensile testing device for a tension regulator for mooring an offshore structure, characterized in that the above-mentioned tension regulator for mooring an offshore structure is one of a fairlead chain stopper and a submersible mooring pulley.

Images