JPS6118440Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to variable flange joints for pipes.
In particular, it relates to variable flange joints used for water pressure testing of valves and pipes.

When repairing valves and pipes on a repair ship, one of the things to check is a water pressure test. As a conventional water pressure testing device used for this water pressure test, there is one shown in FIG. This water pressure testing device is designed to watertightly close the end of a valve or the like using two blind flanges 1 and 2, and to perform a water pressure test by tightening both flanges 1 and 2 with a fastening member 3.

However, in such conventional devices, the diameter of the valve, etc. and the pressure applied to the valve, etc. vary widely, so blind flanges 1 and 2 must be manufactured each time according to the diameter of the valve, etc. There were flaws. Furthermore, such a device has the disadvantage that the length of the fastening member 3 limits the height of the valve, etc. that can be inserted therein.

This invention was devised to eliminate the above-mentioned drawbacks of the conventional art, and its purpose is to provide a flange joint that can be used for water pressure testing of valves of various diameters.

The variable flange joint of this invention has a plurality of fastening member grooves cut toward the center at intervals on the flange, and has a base plate that is attached to the object to be connected via the fastening member, and a base plate that is attached to the object to be connected via the fastening member. between the base plate and the disk, and the base plate and the disk and the disk and the disk are removably fitted through the fitting holes. A water sealing member is provided on the connection surface of the disk, and by attaching and removing the disk, it can be used for connected objects such as various valves with different diameters.

This invention will be explained below with reference to an illustrative embodiment. As shown in Figures 2 and 3, this shows the pressure water supply side of a variable flange joint used for water pressure tests. 4 is a connected object such as a valve or pipe, and has a flange 4a. are doing.

The flange joint 5 of this invention is equipped with a base plate 6 and multistage discs 7 whose diameters become larger in sequence. Base plate 6
The flange 6a has a plurality of fastening member grooves 8 cut toward the center at intervals. This fastening member groove 8 is designed to allow fastening members 9 to be attached in accordance with the diameters of the flanges 4a of various objects 4 to be connected. Although the shape of the base plate 6 is square in the figure, it may be circular.

The disc 7 has a fitting hole 7a on its lower surface, and is removably fitted into the convex portion of the base plate 6 or the lower disc. A supply hole 1 is provided in the center of the base plate 6 and the disc 7.
0 is drilled and the pipe 11 is attached to the base plate 6.
As a result, pressurized water is supplied into the connected object 4. Therefore, a water sealing member 12 such as an O-ring is provided on the joint surfaces of the base plate 6 and the disc 7.

In such a configuration, the open end of the object to be connected 4 can be closed by attaching or removing the discs 7 in multiple stages according to the diameter of the object to be connected 4. Next, by tightening the fastening member 9, a water pressure test can be performed.

Since it is not necessary to supply pressure to the reflective end of the object 4 to be connected, a blind plate in which the supply hole 10 is not provided in the base plate 7 may be used.

In addition, although the flange joint used for the water pressure test has been described above, the variable flange joint according to the present invention can be effectively applied not only to this but also to the connection of pipes of different diameters.

As mentioned above, according to this invention, the flange of the base plate is provided with a groove for the fastening member cut toward the center, and the base plate is provided with multiple discs that can be attached and detached in multiple stages, so that it can be used to connect objects of various diameters. can be easily connected in a short time.

Furthermore, since the flange of the connected object is used for installation, and each side of the connected object is used as a unit,
The device itself can be configured to be lightweight and compact.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a conventional hydraulic test instrument, FIG. 2 is a sectional view showing an embodiment of this invention, and FIG. 3 is a similar bottom view. 1, 2... Blind flange, 3... Fastening member, 4...
... object to be connected, 4a... flange, 5... flange joint, 6... base plate, 6a... flange, 7... disc, 7a... fitting hole, 8... groove for fastening member, 9
... Fastening member, 10 ... Supply hole, 11 ... Pipe, 12 ... Water sealing member.

Claims (1)

[Scope of utility model registration request] The flange has a plurality of fastening member grooves cut toward the center at intervals, and a groove is provided between the base plate, which is attached to the object to be connected via the fastening member, and the object to be connected. Discs with diameters increasing in size are provided in multiple stages, and the base plate and the disc, and the disc and the disc are removably fitted through the fitting holes, and an enclosing member is attached to the connecting surface of the base plate and the disc. A variable type flange joint characterized by the provision of.