JPH0630595U - Pipe fitting - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a pipe joint for use in a flange joint portion of a steel pipe for transferring a fluid, which does not require the production of a mate pipe by actual size measurement. [Structure] A laminated piece body 3 in which a flange 3a is welded to one end of a short pipe, and a flange 3b with an adjusting hole is welded to the other end, and the flange 3b with an adjusting hole is connected to the flange 3b with a bolt and a nut 9. A flanged centering ring 4 having a threaded portion 4b on the outer peripheral wall of the short cylinder at the other end, an O-ring 6, and a holding ring 5 for holding the O-ring 6 having a female threaded portion 5b on the inner peripheral wall. A pipe joint for connecting steel pipes.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pipe joint used for a flange joint portion of a steel pipe for transferring a fluid.

[0002]

[Prior art]

 Conventionally, there is no special pipe fitting of this type.The actual dimensions are measured, the joint members are cut, and the actual fitting is performed in a temporary welded state to produce a fitted pipe, and the fine fitting is performed while making fine adjustments. It is known that a flange is fixed by welding and the pipe is connected by fastening the flange with a bolt and a nut.

[0003]

[Problems to be solved by the device]

 In the conventional technology, the actual size is measured, the parts are cut, temporary welded, and the actual product is combined to produce a combined pipe, and the flange is fixed by fine adjustment and main welding. In addition, it requires an extremely large amount of labor and time, and there is a problem that the process extension and the processing cost are high.

The present invention has been made in view of the above problems of the prior art, and its object is to connect pipes in a short time and with a great reduction in labor. It is intended to provide a pipe joint that can

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the pipe joint according to the present invention has a fitting pipe body in which a flange is welded to one end of a short pipe, and a flange with an adjusting hole is welded to the other end. Consists of a centering ring with a flange that is connected and has a threaded portion on the outer peripheral wall of the short tubular portion, an O-ring, and a retaining ring for retaining an O-ring that has a female threaded portion on the inner peripheral wall. The flange of the pipe body is fastened to the flange of the pipe end with bolts and nuts, and the pipe to be connected is inserted into the holding ring, O-ring, and centering ring with flange, and the gasket and washer are inserted. The centering ring with flange and the centering ring with flange are fastened with bolts and nuts, and the holding ring is screwed to the ring with flange.

[0006]

[Action]

 The hole of the flange with the adjusting hole at one end of the mating piece body absorbs the misalignment of the pipes to be connected and functions to adjust the eccentricity.

The length of the mating piece body serves to adjust the length of the connecting pipe.

[0008]

【Example】

 Examples will be described with reference to the drawings. In FIG. 1, the pipe joints are inserted through the connecting pipe 1 from the side of the holding ring 5, the O-ring 6, the aligning ring 4 with the flange, and the flange 3b with the adjusting hole of the mating piece body 3, respectively.

The flange 3a at the end of the mating piece main body 3 is fastened with a bolt and a nut 2c by sandwiching a gasket 2b between the flange 3a and the flange 2a at the end of the connecting pipe.

Next, the flange 4a of the aligning ring 4 with a flange is fitted to the flange 3b with an adjusting hole at the end of the mating piece body 3, and the gasket 7 is sandwiched between the flange 4a and the flange 3b with an adjusting hole to form a washer. 8 is mounted and temporarily fastened with bolts and nuts 9.

Then, an O-ring 6 is attached to the end portion of the flanged aligning ring 4, and the female screw portion 5b of the retaining ring 5 is screwed onto the male screw portion 4b of the flanged aligning ring 4.

The flange 3b with the adjusting hole at the end of the mating piece body 3 and the bolt 4 and the flange 4a at the end of the aligning ring with the flange 4 are fastened tightly with bolts and nuts 9 which are temporarily fastened.

[0013]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

If a pipe joint as in the present invention is manufactured for each outer diameter of the connecting pipe, it is possible to easily connect the pipes without the need for on-site matching. It is possible to significantly reduce the connection time.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

[Explanation of reference signs] 1, 2 Connection pipes 2a, 3a, 4a Flange 2b, 7 Gasket 2c, 9 Bolt and nut 3 Alignment body 3b Adjusting hole flange 4 Flange aligning ring 4b Male thread 5 Presser ring 5b Female thread 6 O-ring 8 Washer

Claims (1)

[Scope of utility model registration request] 1. A pipe joint used for a flange joint portion of a steel pipe for transferring a fluid, wherein a flange is welded to one end of the short pipe and a flange with an adjusting hole is welded to the other end.
Main body, a flanged alignment ring having a threaded portion on the outer peripheral wall of the short cylinder connected to the flange with the adjusting hole with a bolt and a nut, and an internal thread on the O-ring and the inner peripheral wall. And a holding ring for holding the O-ring having a pipe joint for connecting steel pipes.