JP-2022540381-A5 -

Dates

Publication Date

20230515

Application Date

20200703

Description

This invention relates to a device necessary for piping installation. More specifically, it relates to a device used when closing or connecting the ends of pipes, which facilitates pipe seal testing and piping installation. Generally, devices for sealing or connecting pipes are primarily used as means of maintaining seals and come in various shapes. Installation is done by methods such as screwing or welding, which presents problems due to the need for numerous tools, resulting in high costs and time. Figure 1 is a perspective view of a pipe sealing device according to one embodiment of the present invention.Figure 2 is an exploded perspective view of the first and second parts of the pipe sealing device.Figure 3 shows a cross-sectional view and a front view of the sealing surface of the pipe sealing device.Figure 4 is a cross-sectional view of a pipe sealing device equipped with fluid inlet and outlet sections.Figure 5 is a cross-sectional view of a pipe sealing device with an intermediate section.Figure 6 is a cross-sectional view of a pipe sealing device equipped with an external tightening portion.Figure 7 is a cross-sectional view of a pipe sealing device provided with an elastically deformable section.Figure 8 shows a perspective view and a cross-sectional view of the pipe sealing device according to the sixth embodiment.Figure 9 shows a perspective view and a cross-sectional view of a pipe sealing device provided with a fluid inlet/outlet section according to the seventh embodiment.Figure 10 shows a perspective view and a cross-sectional view of a pipe sealing device with an intermediate section provided in the eighth embodiment.Figure 11 is a cross-sectional view of a pipe sealing device provided with an elastically deformable portion according to the ninth embodiment.Figure 12 is a perspective view of a pipe sealing device according to the tenth embodiment.Figure 13 is an exploded perspective view of the piping sealing device of the 10th embodiment.Figure 14 is a cross-sectional view of a pipe sealing device according to the tenth embodiment.Figure 15 is a cross-sectional view of the 11th embodiment of the pipe sealing device.Figure 16 is a perspective view of a piping sealing device according to the twelfth embodiment.Figure 17 is a cross-sectional view of a piping sealing device according to the twelfth embodiment. Preferred embodiments of the present invention will be described below with reference to the drawings. However, the embodiments of the present invention can be modified into several other forms, and the scope of the invention is not limited to the embodiments described below. Furthermore, the embodiments of the present invention are provided to provide a more complete explanation of the invention to those with average knowledge of the art. Therefore, the shapes and sizes of elements in the drawings may be exaggerated for clarity, and elements indicated by the same reference numerals in the drawings are the same elements. This invention relates to a device necessary during piping installation, and more particularly to a device that facilitates the blocking or connection of pipes. As a first embodiment, as shown in Figures 1 to 3, the pipe sealing device has a first part 11 which is cylindrical and hollow and has an insertion opening 18 into which a pipe 26 is inserted on the inside and an inclined portion 23 on the outside into which the outer diameter on the pipe end 29 side gradually increases, and a second part 15 which is cylindrical and hollow and has an inclined portion 23 on the inside corresponding to the inclined portion 23 of the first part 11, in which the inner diameter on the pipe end 29 side gradually increases, and a closing surface 32 is provided on the end face on the pipe end 29 side. The inclined portion 23 is formed with a small angle such that the frictional force between the first portion 11 and the pipe 26 is greater than the kinetic force generated by the pressure on the closing surface 32 of the second portion 15. The closing surface 32 of the second portion 15 is made to have resilience so that it is possible to tell whether or not pressure is being applied to the pipe, and a safety portion is provided to relieve the pressure if excessive pressure is applied. In addition, the first portion 11 is provided with a cylindrical extension portion 24 parallel to the center of the pipe to facilitate removal of the device. Figure 3 shows that a half-cut safety portion 35 is provided on the closing surface 32. A clamping portion 47 is provided to ensure tight contact between the first portion 11 and the second portion 15. To prevent initial pressure leakage when fluid pressure is applied to the pipe, an elastic portion 41 is provided between the first portion 11 and the pipe end 29 side of the second portion 15 so that the inclined portions 23 of the first portion 11 and the second portion 15 are always in contact. A stop portion 37 is provided on the pipe end 29 side of