KR-102965282-B1 - ADAPTER DEVICE FOR PRESSURE TEST OF PRESSURE VESSELS

KR102965282B1KR 102965282 B1KR102965282 B1KR 102965282B1KR-102965282-B1

Abstract

An adapter device for testing the internal pressure of a pressure vessel is disclosed. The adapter device includes an adapter body, a water supply unit, and an air discharge unit. The adapter body is coupled to the nozzle boss of the pressure vessel and has a first flow path for water passage and a second flow path for air passage inside. The water supply unit includes a first connector coupled to the adapter body and having a third flow path inside that communicates with the first flow path, and a first quick coupling device that connects the first connector and a water supply hose in a one-touch manner. The air discharge unit includes a second connector coupled to the adapter body and having a fourth flow path inside that communicates with the second flow path, and a second quick coupling device that connects the second connector and an air discharge hose in a one-touch manner.

Inventors

강인보
황의찬
고영관
김대근

Assignees

롯데케미칼 주식회사

Dates

Publication Date: 20260513
Application Date: 20230830

Claims (14)

An adapter body coupled to the nozzle boss of a pressure vessel and having a first passage for water passage and a second passage for air passage inside; A water supply unit comprising: a first connector screw-coupled to the end of the adapter body and having a third fluid path communicating with the first fluid path inside; and a first quick coupling device installed on the first connector and the water supply hose, respectively, to connect the first connector and the water supply hose in a one-touch manner; and It includes an air discharge unit comprising a second connector that is screw-coupled to the circumference of the adapter body at a distance from the first connector and has a fourth passage communicating with the second passage inside, and a second quick coupling device installed on the second connector and the air discharge hose, respectively, to connect the second connector and the air discharge hose in a one-touch manner. An adapter device for testing the internal pressure of a pressure vessel, wherein the first flow path is parallel to the longitudinal direction of the adapter body, and the third flow path is located in a straight line with the first flow path.
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In paragraph 1, The above second Euro is an adapter device for testing the internal pressure of a pressure vessel, comprising a first part parallel to the longitudinal direction of the adapter body and a second part orthogonal to the first part.
In paragraph 3, The above second connector is an adapter device for testing the internal pressure of a pressure vessel, which is coupled to the circumference of the adapter body so that the above fourth Euro is positioned in a straight line with the above second part.
In paragraph 1, The first quick coupling device comprises a female coupler installed on either the first connector or the water supply hose, a male coupler installed on the other, and a coupling unit for connecting the female coupler and the male coupler. The above female coupler and the above male coupler each comprise a cylinder provided with an internal flow path and a valve unit installed inside the cylinder to control the flow path, an adapter device for testing the internal pressure of a pressure vessel.
In paragraph 1, The second quick coupling device comprises a female coupler installed on either the second connector or the air exhaust hose, a male coupler installed on the other, and a coupling unit for connecting the female coupler and the male coupler. The above female coupler and the above male coupler each comprise a cylinder provided with an internal flow path and a valve unit installed inside the cylinder to control the flow path, an adapter device for testing the internal pressure of a pressure vessel.
In paragraph 5 or 6, The above valve unit is an adapter device for internal pressure testing of a pressure vessel comprising a valve pin, a support member fixed inside the cylinder, and a spring installed between the valve pin and the support member to elastically support the valve pin.
An adapter body coupled to the nozzle boss of a pressure vessel and having a first passage for water passage, a second passage for air passage, and a fifth passage branched from the first passage; A pressure gauge that is screw-coupled to the end of the adapter body, has an internal space communicating with the first fluid path, and measures and displays the residual pressure of the pressure vessel after the internal pressure test of the pressure vessel is completed; A water supply unit comprising: a first connector screw-coupled to the end of the pressure gauge and having a third fluid passage communicating with the internal space of the pressure gauge; and a first quick coupling device installed on the first connector and the water supply hose, respectively, to connect the first connector and the water supply hose in a one-touch manner; An air discharge unit comprising: a second connector screw-coupled to the circumference of the adapter body at a distance from the pressure gauge and having a fourth passage communicating with the second passage inside; and a second quick coupling device installed on the second connector and the air discharge hose, respectively, to connect the second connector and the air discharge hose in a one-touch manner; and It includes a residual pressure relief valve having an internal space communicating with the fifth Euro and screw-coupled to the circumferential surface of the adapter body at a distance from the second connector along the circumferential direction of the adapter body, connected to a vent hose, and releasing the residual pressure of the pressure vessel when opened. An adapter device for testing the internal pressure of a pressure vessel, wherein the first flow path is parallel to the longitudinal direction of the adapter body, and the internal space of the pressure gauge and the fourth flow path are located in a straight line with the first flow path.
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In paragraph 8, The first quick coupling device comprises a female coupler installed on either the first connector or the water supply hose, a male coupler installed on the other, and a coupling unit for connecting the female coupler and the male coupler. The above female coupler and the above male coupler each comprise a cylinder provided with an internal flow path and a valve unit installed inside the cylinder to control the flow path, an adapter device for testing the internal pressure of a pressure vessel.
In paragraph 8, The second Euro comprises a first portion parallel to the longitudinal direction of the adapter body and a second portion orthogonal to the first portion, and The above-mentioned fourth Euro is an adapter device for internal pressure testing of a pressure vessel connected to the above-mentioned second part.
In Paragraph 11, The above residual pressure removal valve is an adapter device for testing the internal pressure of a pressure vessel that is coupled to the second connector at 180° opposite side along the circumferential direction of the adapter body.
In paragraph 8, The second quick coupling device comprises a female coupler installed on either the second connector or the air exhaust hose, a male coupler installed on the other, and a coupling unit for connecting the female coupler and the male coupler. The above female coupler and the above male coupler each comprise a cylinder provided with an internal flow path and a valve unit installed inside the cylinder to control the flow path, an adapter device for testing the internal pressure of a pressure vessel.
In Article 10 or Article 13, The above valve unit is an adapter device for internal pressure testing of a pressure vessel comprising a valve pin, a support member fixed inside the cylinder, and a spring installed between the valve pin and the support member to elastically support the valve pin.

Description

Adapter device for pressure test of pressure vessels The present invention relates to a pressure vessel, and more specifically, to an adapter device for testing the internal pressure of a pressure vessel. Generally, a pressure vessel is a container that stores gaseous fuel by compressing it to high pressure, and it can primarily be installed in natural gas or hydrogen vehicles. A pressure vessel may consist of a plastic liner forming the vessel body, a fiber composite surrounding the outer surface of the liner, and a nozzle boss installed at the inlet of the liner. The nozzle boss is the part that connects to the vehicle's valve (or adapter) and is made of high-strength metal. Since pressure vessels store fuel compressed to high pressures of 700 bar or more, an evaluation of their safety is essential. A hydraulic test may be conducted to evaluate the internal pressure performance of the pressure vessel. The hydraulic test may consist of a process to inspect the fatigue of the pressure vessel by injecting water into the vessel at high pressure, measuring the vessel's expansion state, and then measuring the vessel's return to its original state after the water is discharged. For hydrostatic testing of a pressure vessel, a test adapter can be attached to the nozzle boss, and a water supply hose can be connected to the test adapter. The test adapter and the water supply hose typically feature a threaded connection structure that exhibits high pressure resistance. However, threaded connection structures inevitably require the use of tools to ensure high fastening force, which causes inconvenience during operation and results in significant time consumption for fastening and unfastening. FIG. 1 is a perspective view of the combined state of an adapter device for internal pressure testing of a pressure vessel according to one embodiment (hereinafter referred to as the "adapter device" for convenience). Figure 2 is a schematic cross-sectional view of the adapter device illustrated in Figure 1. Figure 3 is a cross-sectional view of the disassembled state of the adapter device shown in Figure 2. FIG. 4 is a drawing showing an example of a first quick coupling device among the adapter devices illustrated in FIG. 2. FIG. 5 is a drawing showing an example of a second quick coupling device among the adapter devices illustrated in FIG. 2. FIG. 6 is a cross-sectional view of an adapter device according to another embodiment. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. FIG. 1 is a perspective view of the assembled state of an adapter device for internal pressure testing of a pressure vessel according to one embodiment (hereinafter referred to as the "adapter device" for convenience), FIG. 2 is a schematic cross-sectional view of the adapter device shown in FIG. 1, and FIG. 3 is a cross-sectional view of the exploded state of the adapter device shown in FIG. 2. Referring to FIGS. 1 to 3, the pressure vessel (10) is used to store fuel (such as hydrogen or natural gas) compressed to a high pressure of 700 bar or more. The pressure vessel (10) may be composed, for example, of a plastic liner forming the body of the vessel, a fiber composite surrounding the outer surface of the liner, and a nozzle boss (20) installed at the inlet of the liner. The nozzle boss (20) may be made of high-strength metal, and a first screw thread (21) which is a female screw may be located on the inner circumference of the nozzle boss (20). An adapter device (100) according to one embodiment is connected to a nozzle boss (20) for an internal pressure test of a pressure vessel (10), and is separated from the nozzle boss (20) after the internal pressure test is completed. The adapter device (100) includes an adapter body (200) connected to the nozzle boss (20), and a water supply unit (300) and an air discharge unit (400) connected to the adapter body (200). Each of the water supply unit (300) and the air discharge unit (400) is equipped with a quick coupling device (500, 600) to facilitate the connection and disconnection of the adapter device (100). The adapter body (200) may have a rough rod shape, and the longitudinal direction of the adapter body (200) may coincide with the longitudinal direction of the pressure vessel (10). A second screw thread (210), which is a male screw, may be provided on one side of the outer surface of the adapter body (200). The adapter body (200) may be fastened to the nozzle boss (20) by the screw connection of the first screw thread (21) and the second screw thread (210). Inside the adapter body (200), a first flow path (P1) and a second flow path (P2) are located that penetrate the adapter body (200). The first flow path (P1) is a water supply flow pat