KR-20260067176-A - NOZZLE APPARATUS FOR SEA WATER DISTRIBUTION

KR20260067176AKR 20260067176 AKR20260067176 AKR 20260067176AKR-20260067176-A

Abstract

A seawater distribution nozzle device is provided. The seawater distribution nozzle device comprises a first plate, a second plate positioned at a predetermined distance from the first plate in a direction facing the heat exchange tube, a first sleeve extending from the first plate to the heat exchange tube, and a fastening bolt screwed into the first sleeve, wherein the fastening bolt may be formed of the same material as the first sleeve.

Inventors

이건섭
양희승

Assignees

한국가스공사

Dates

Publication Date: 20260512
Application Date: 20241105

Claims (7)

In a seawater distribution nozzle device coupled to a heat exchange tube, First plate; A second plate positioned at a predetermined distance from the first plate in a direction opposite to the heat exchange tube; A first sleeve extending from the first plate to the heat exchange tube; and A fastening bolt screwed into the first sleeve; comprising The above fastening bolt is characterized by being formed of the same material as the above first sleeve. Seawater distribution nozzle device.
In claim 1, The first plate above is, It includes a first through hole formed at a position spaced apart from the outer surface by a predetermined distance in the direction of the center; The second plate above is, A second through hole formed at a position spaced apart from the outer surface by a predetermined distance in the direction of the center; comprising Seawater distribution nozzle device.
In claim 2, The radial distance from the outer surface of the first plate to the center of the first through hole is formed in a range of 20 millimeters or more, and Characterized by the radial distance from the outer surface of the second plate to the center of the second through hole being formed in a range of 20 millimeters or more. Seawater distribution nozzle device.
In claim 1, The first plate above is, It further includes a first pitching hole formed in the center, The second plate above is, It further includes a second pitching hole formed in the center, Characterized that the outer diameter of the first pitch hole is larger than the outer diameter of the second pitch hole. Seawater distribution nozzle device.
In claim 1, The first plate and the second plate are, Characterized by each thickness being formed to be 8t or close to 8t, Seawater distribution nozzle device.
In claim 1, The first plate, the second plate, the first sleeve, and the fastening bolt are, Characterized by each being formed from aluminum material, Seawater distribution nozzle device.
In claim 1, The first plate, the second plate, and the first sleeve are, Characterized by each surface being anodized Seawater distribution nozzle device.

Description

NOZZLE APPARATUS FOR SEA WATER DISTRIBUTION The present invention relates to a seawater distribution nozzle device, and more specifically, to a nozzle device that distributes and introduces seawater into a plurality of heat exchange tubes of a liquefied natural gas vaporizer. Natural gas is typically liquefied and transported over long distances in the form of Liquefied Natural Gas (LNG). In this process, LNG carriers are used to transport the LNG from the location where it is converted into LNG to the location where it is vaporized and distributed to various end-users. LNG transported by LNG carriers is primarily vaporized at the destination and distributed to various uses, and LNG vaporizers are used for this vaporization process. While there are various types of LNG vaporizers, the Open Rack Vaporizer (ORV) is the most commonly used. This type of vaporizer utilizes seawater as a heat source to vaporize LNG by exchanging heat between the LNG flowing inside the heat conduction tubes and the seawater flowing outside. Since the Open Rack Vaporizer uses seawater as a heat source, it primarily requires only pump power costs, resulting in low operating costs, and it has the advantage of a high external heat transfer rate. However, since the seawater vaporizer uses seawater for heat exchange, frequent damage to the equipment occurs due to impact from the seawater and the corrosive environment. In particular, wear caused by corrosion of the seawater distribution nozzle device, which evenly distributes seawater to multiple heat-exchanging tubes, accounts for a large proportion of failure cases. Accordingly, there is a need to introduce a seawater distribution nozzle device with improved seawater resistance and wear resistance. FIG. 1 is a perspective view showing the usage state of a conventional seawater distribution nozzle device. FIG. 2 is a perspective view showing the installation state of a seawater distribution nozzle device according to the present embodiment. FIG. 3 is a perspective view showing a seawater distribution nozzle device according to the present embodiment. FIG. 4 is a front perspective view showing a seawater distribution nozzle device according to the present embodiment. FIG. 5 is a plan view showing a first plate according to the present embodiment. FIG. 6 is a plan view showing a second plate according to the present embodiment. In order to fully understand the present invention, the operational advantages of the present invention, and the objectives achieved by the implementation of the present invention, reference must be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings. The present invention will be described in detail below by explaining preferred embodiments of the invention with reference to the attached drawings. Identical reference numerals in each drawing indicate identical components. In this specification, singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the longitudinal direction refers to a direction parallel to the direction in which the heat exchange tube extends. In this specification, the circumferential direction refers to a direction parallel to an imaginary line extending along the circumference of the heat exchange tube while being orthogonal to the longitudinal direction. In this specification, the radial direction refers to a direction that is orthogonal to the longitudinal direction and parallel to an imaginary line extending from the center inside the heat exchange tube to the outside of the tube. FIG. 2 is a perspective view showing the installation state of a seawater distribution nozzle device according to the present embodiment, FIG. 3 is a perspective view showing a seawater distribution nozzle device according to the present embodiment, and FIG. 4 is a front perspective view showing a seawater distribution nozzle device according to the present embodiment. Referring to FIGS. 2 to 4, the seawater distribution nozzle device (10) according to the present embodiment may include a first plate (100, Plate), a second plate (200), a first sleeve (300, Sleeve), a second sleeve (400), a fastening bolt (500), and a fastening nut (600). The first plate (100) and the second plate (200) may be joined through the second sleeve (400). The first plate (100) may be joined to a heat exchange tube (20) through the first sleeve (300). Accordingly, the seawater distribution nozzle device (10) may be joined to the heat exchange tube (20). FIG. 5 is a plan view showing the first plate according to the present embodiment. Referring to FIGS. 2 to 5, the first plate (100) according to the present embodiment may be positioned at a predetermined distance in the longitudinal direction from the heat exchange tube (20). The first plate (100) may be formed in a doughnut shape in which a pair of flat sections (not shown) ext