US-12618532-B2 - Protective cover for shoulder part of pressure vessel

Abstract

The present invention relates to a protective cover for a shoulder part of a pressure vessel, and more particularly, to a protective cover coupled to a shoulder part of a pressure vessel to protect the shoulder part from friction or impact.

Inventors

• Seok-Bong HEO
• Sang-Jin Jeon
• Jae-Sung Park
• Kyoung-Hun Kim
• Chang-Uk Lee
• Jihee JUNG
• Ae-Rin Heo
• Ho-Sun WEE

Assignees

• DUKSAN AETHERCT CO., LTD.

Dates

Publication Date

20260505

Application Date

20240412

Priority Date

20231101

Claims (4)

1. 1 . A protective cover for a shoulder part of a pressure vessel, which is coupled to the shoulder part disposed on one or both sides of the pressure vessel to protect the shoulder part, the protective cover comprising: an impact resistance member made of impact-absorbing foam; an outer shell coupled to the impact resistance member and wrapping around the impact resistance member; and a detachable means for detachably coupling the impact resistance member and the outer shell to each other, wherein the detachable means comprises: a holding part, which has a fixing groove formed at a position spaced apart from an edge of the outer shell toward the center of the outer shell, and a push bar rotatably mounted on the outer shell to elastically press an outer surface of the impact resistance member or return the impact resistance member to an original position thereof; and a fitting part, which protrudes outward from the outer surface of the impact resistance member and includes a coupling protrusion seated on the fixing groove.
2. 2 . The protective cover according to claim 1 , further comprising a slit formed between the outer surface of the outer shell, wherein the push bar comprises a bridge connecting the push bar and the outer shell, and wherein the push bar is configured such that when one side of the push bar with respect to the bridge in a longitudinal direction of the push bar is pressed, the other side of the push bar with respect to the bridge in the longitudinal direction moves upward, and when pressure is released, the push bar is returned to an original position thereof.
3. 3 . The protective cover according to claim 1 , wherein the coupling protrusion protrudes to have a curvature gradually lowering toward the center of the impact resistance member, and wherein a retaining surface protruding perpendicularly outward is formed on one side end of the coupling protrusion which gets contact with one end of the push bar.
4. 4 . The protective cover according to claim 1 , wherein a loop surface is further included on the holding part to minimize an exposed area of the seated coupling protrusion by covering an upper portion of the fixing groove.

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a protective cover for a shoulder part of a pressure vessel, and more particularly, to a protective cover coupled to a shoulder part of a pressure vessel to protect the shoulder part from friction or impact. Background Art A pressure vessel is used to store various fluids such as oxygen, natural gas, and nitrogen, and recently, is also used as a vessel for storing hydrogen which is the fuel for an eco-friendly hydrogen fuel cell vehicle. A conventional plastic liner formed of a plastic material has a cylindrical shape with a hollow interior, and includes a dome-shaped shoulder part of which one or both sides have a curved cross-section. The shoulder part is vulnerable to internal pressure of the vessel or external impact. PATENT LITERATURE Patent Documents Patent Document 1: Korean Patent No. 10-2250341Patent Document 2: Korean Patent No. 10-1856323 SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior arts, and it is an object of the present invention to provide a cover for reinforcing a shoulder part of a pressure vessel. To accomplish the above object, according to the present invention, there is provided a protective cover for a shoulder part of a pressure vessel, which is coupled to a dome-shaped shoulder part on one or both sides of the pressure vessel to protect the shoulder part, including: an impact resistance member made of impact-absorbing foam; an outer shell coupled to the impact resistance member while wrapping around the impact resistance member; and a detachable means for detachably coupling the impact resistance member and the outer shell to each other. Moreover, the detachable means includes: a fixing part provided on either the impact resistance member or the outer shell; and an insertion part provided on the other of the impact resistance member or the outer shell. In addition, the detachable means includes: a holding part, which has a fixing groove formed at a position spaced apart from the edge of the outer shell toward the center, and a push bar rotatably mounted on the outer shell to elastically press the outer surface of the impact resistance member or return the impact resistance member to the original position; and a fitting part, which protrudes outward from the outer surface of the impact resistance member and includes a coupling protrusion seated on the fixing groove. The cover for reinforcing the shoulder part of the pressure vessel according to the present invention can reinforce the shoulder part of the pressure vessel, thereby preventing damage to the shoulder part from external impact. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention in conjunction with the accompanying drawings, in which: FIGS. 1 to 5 illustrate a protective cover for the shoulder part of a pressure vessel according to a first embodiment of the present invention. FIGS. 6 to 10 illustrate a protective cover for the shoulder part of a pressure vessel according to a second embodiment of the present invention. FIGS. 11 to 15 illustrate a protective cover for the shoulder part of a pressure vessel according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, preferred embodiments of a protective cover for a shoulder part of a pressure vessel according to the present invention will be described in detail with reference to the accompanying drawings. First, as illustrated in FIGS. 1 to 5, the protective cover 1 for the shoulder part of the pressure vessel according to the first embodiment of the present invention, which is coupled to a dome-shaped shoulder part on one or both sides of the pressure vessel to protect the shoulder part, includes: an impact resistance member 10 made of impact-absorbing foam; an outer shell 20 coupled to the impact resistance member 10 while wrapping around the impact resistance member 10; and a detachable means 30 for detachably coupling the impact resistance member 10 and the outer shell 20 to each other. The protective cover 1 according to the first embodiment is coupled to the shoulder part of a plastic liner made of synthetic resin material, and in this instance, is configured to be separably coupled to a fixing flange 40 described later, thereby allowing only the protective cover to be replaced in case of wear or damage. The detailed structure will be described later. The impact resistance member 10 compensates for vibration and impact transmitted from the outside to protect the shoulder part, and can be manufactured, for example, by foaming and molding a non-combustible rigid urethane material in a mold. The impact resistance member 10 is arranged to cover a portion of the shoulder part to protec