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KR-102962631-B1 - JOINT APPARATUS FOR PIPE

KR102962631B1KR 102962631 B1KR102962631 B1KR 102962631B1KR-102962631-B1

Abstract

The present invention relates to a seismic pipe connection device, and more specifically, to a seismic pipe connection device that improves the seismic resistance of seismic pipes installed in important structures such as general buildings or nuclear power plants, thereby minimizing the time and extent of water supply interruption during an earthquake disaster through the redundancy of critical facilities, inter-system interconnection, and block formation of pipe networks. The seismic pipe connection device according to the present invention comprises: a pair of flanges each provided at the end of a seismic pipe or a valve; a gasket in close contact with the outer surface of the pair of flanges; a pair of gasket covers having a semicircular cross-section in close contact with the outer surface of the gaskets; and a pair of joints surrounding the gasket covers.

Inventors

  • 김수근

Dates

Publication Date
20260511
Application Date
20240131

Claims (15)

  1. A pair of flanges, each provided at the end of a seismic pipe or valve; A gasket that is in close contact with the outer surface of a pair of the above flanges; A pair of gasket covers having a semicircular cross-section that are in close contact with the outer surface of the above gasket; and A pair of joints surrounding the above gasket cover; including, A pair of gasket adjustment covers having a semicircular cross-section and provided between the above joint and the gasket cover, and It further includes a first adjustment screw that penetrates the joint in the direction of the center of the seismic pipe and presses the gasket adjustment cover, and A seismic pipe connection device characterized in that the above gasket adjustment cover is thicker than the above gasket cover and wraps around the outer surface of the above gasket cover, and is arranged so as to intersect the installation direction with the above gasket cover.
  2. In paragraph 1, A seismic pipe connecting device characterized in that the above flange is integrally formed at the end of the seismic pipe or valve, or is formed separately and then joined.
  3. In paragraph 1, A seismic pipe connection device characterized in that the above flange has a first contact groove formed on its outer surface, and both ends of the gasket have a first protrusion formed on their inner surface that protrudes inwardly to be seated in the first contact groove.
  4. In paragraph 1, A seismic pipe connection device characterized by the above gasket cover wrapping the outer surface of the above gasket.
  5. In paragraph 1, A seismic pipe connection device characterized in that the above gasket cover is harder than the above gasket.
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  10. In paragraph 1, The above first adjustment screws are provided in multiple numbers to penetrate the joint at equal intervals, and A seismic pipe connecting device characterized by the first adjusting screw being provided in one row or two rows.
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Description

Seismic pipe connection device {JOINT APPARATUS FOR PIPE} The present invention relates to a seismic pipe connection device, and more specifically, to a seismic pipe connection device that improves the seismic resistance of seismic pipes installed in important structures such as general buildings or nuclear power plants, thereby minimizing the time and extent of water supply interruption during an earthquake disaster through the redundancy of critical facilities, inter-system interconnection, and block formation of pipe networks. The connection of seismic pipes requires both robustness and ease of installation. Generally, seismic pipes are manufactured in lengths that are easy to handle, arranged in the required configuration at the site, and connected by welding them using reducers, tees, or elbows according to their orientation. As illustrated in FIG. 1, a conventional pipe connecting device is composed of a gasket (30) into which the connecting portion of a pipe (10) is inserted, and a joint (20) which has a gasket receiving portion on the inside and is formed in two sections to surround the gasket (30) and is joined by a fastener (22). The connecting part of the pipe (10) to be connected is inserted into the gasket (30), and the outside of the gasket (30) is surrounded by a joint (20), and then the pipe (10) is connected by fastening a bolt and a nut (22). In addition, valves are installed when the supply or shut-off of fluid needs to be selective. To explain the connection structure between the valve and the pipe, the seismic pipe and seismic valve are connected by a flange, a gasket placed between the two flanges, and then fastening with bolts and nuts. However, conventional pipe connection devices have the disadvantage of being prone to cracking at the welded joints, leading to various problems such as leakage. Furthermore, if this problem occurs in water pipes through which drinking water passes, the pipe length contracts and expands due to temperature variations caused by climate change, and there is a problem in that the pipe cannot adapt at all to the flow caused by external impacts or earthquakes. This problem causes pipe rupture, and if a pipe ruptures, it poses a great danger as it can lead to leakage and contamination of drinking water, explosions caused by gas leaks, and, in the case of nuclear power plant piping facilities, casualties. In addition to the method described above, a method using rubber packing and clamps to connect pipes is also widely used, but there is a problem that the connected pipe detaches from the rubber packing when an external force is applied in the horizontal or vertical direction. Figure 1 shows a conventional seismic pipe connection device. FIGS. 2 and FIGS. 3 illustrate a first embodiment according to the present invention. FIGS. 4 and FIGS. 5 illustrate a second embodiment according to the present invention. FIGS. 6 and FIGS. 7 illustrate a third embodiment according to the present invention. Hereinafter, the configuration and operation of an embodiment according to the present invention will be specifically described with reference to the attached drawings. FIGS. 2 and FIGS. 3 illustrate a first embodiment (100) according to the present invention. As described above, the first embodiment (100) according to the present invention is provided with a flange (111) at the end of the connection portion of the seismic pipe (110) or valve. Specifically, the flange (111) may be formed integrally on the outer surface of the end of the seismic pipe (110) or valve, or formed separately in a cylindrical shape and then joined to the outer surface of the end of the seismic pipe by means such as welding. The above flange (111) has a first contact groove (111a) formed on its outer surface (upper surface based on FIG. 3). In this embodiment, the first contact groove (111a) is formed in a groove shape at the center, but alternatively, it is also possible to form it on one side of the outer surface of the flange (111) so that the cross-section is stepped. The first embodiment (100) above is provided with a gasket (120) fitted onto the outer surface of a pair of connected flanges (111). The gasket (120) can be formed from rubber or various other elastic materials. The gasket (120) has a first protrusion (121) formed thereon to be in contact with the first contact groove (111a), specifically formed at both ends of the gasket (120). That is, the first protrusion (121) protrudes inwardly from the inner circumference of both ends of the gasket (120) and is seated in the first contact groove (111a) formed on the outer circumference of each of the pair of flanges (111). In addition, the first embodiment (100) according to the present invention comprises a gasket cover (130) that surrounds the outer surface of the gasket (120). The gasket cover (130) may be formed such that both sides (131) are bent to surround not only the outer surface of the gasket (120) but also the sides. The above g