JPS6159090A - Tubular joint to which flange is welded - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is a joint for connecting one pipe to another pipe adjacent thereto, wherein the outer periphery of the one pipe is coated with iron lI!
It relates to a type of welded iron flange joint in which a J annular flange is welded and this flange is held at one end of the other pipe, and more specifically, two pipes are used, and the flange is held at one end of the other pipe. Provided at a position adjacent to the insertion part of one tube,
This insertion part is in a position where it can be inserted overlappingly into the axial socket of the other tube (usually, an annular sealing member is inserted between this insertion part and the socket), and the flange is held by a retaining member. By being coupled to the socket flange on the back or top of the socket, the second
This invention relates to a joint with a structure for connecting and fixing main pipes.

As used herein, "tube" is intended to include all tubular members, such as vibrators, tubes, hoses, etc., and hollow tubular members used in elbows and single-shaped fittings.

In addition, the structure of the insertion part flange (insertion part flange) is as follows.
It shall include a radially inner portion extending towards the end of the tube. With a structure like this.

The flange is welded to the tube. That is, the flange is welded to the end of the tube so as to extend in the radial direction of the tube, or to the side of the tube facing the end of the tube.

(Prior Art and Problems) The above-described joint has the disadvantage that the inner diameter of the socket flange must be smaller than the outer diameter of the socket of the other pipe. This is because the holding member must be placed over the insertion portion of one of the tubes and held firmly to connect the socket flange and the insertion portion flange.

A socket flange is typically attached to a tube by being threaded from the tube's insertion portion to the socket end of the tube.

However, with such a structure, in some cases, for example, when the joint member of a pipe is T-shaped and the receptacle of a socket is to be connected to it, connection cannot be made.

[Purpose of the invention]

The object of the present invention is to overcome the above-mentioned problems and to provide a simple and effective clamping bar joint.

[Summary of the invention]

According to one aspect of the invention, the object is to weld an insert flange to the insert of one tube, insert the insert flange into a socket of the other tube, and attach a socket flange around the socket. an assembly is provided, the insert flange and socket flange assembly being joined by a retaining member connected thereto, the socket flange assembly rounding the end of the tube socket in use; A composite construction flange capable of engaging and supporting the socket is achieved by a welded tubular joint.

According to another aspect of the present invention, the object is to provide an insertion section flange welded around an insertion section of one tube and a socket flange provided around a second tube adjacent to the tube. The insertion part flange and the socket flange assembly are connected by a holding member connected between them.

and wherein the socket flange assembly is capable of assembling the socket into a circular shape and engages with and supports the socket when used as a joint. Ru.

The socket flange assembly comprises a plurality of connectable members that engage around the socket and are coupled to the groin flange by a retaining member.

Alternatively, the socket flange assembly is larger in diameter than the socket, is in the form of a continuous ring, and has a plurality of shoes, each shoe being capable of mating with an insert flange; spaced around the annulus;
It is also possible that when coupled to the insertion part flange, it is located between the ring and the socket and supported by the socket.

The shoe has a III elongated portion that is attached directly to engage the insert flange to at least partially retain the retaining member between the insert flange and the socket flange assembly. It can be configured as follows.

Further, the socket flange assembly has a flange portion, which is divided into two parts, and the flange portion is arranged around the socket, for example, by tightening a shoulder portion of the flange portion, and screwing the bolt thereto. It can also be held by a nut.

The tube and flange assembly may be made of malleable cast iron or steel, for example.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In Figures 1 and 2, the joints are two malleable cast iron pipes 1.
．． 2, the malleable cast iron pipes 1 and 2 include an insertion portion 3 or sockets 1 to 4, and the insertion portion 3 and the socket 4 are fitted together with a resilient seal member 5 interposed therebetween. prevents leakage of the fitting tube.

A malleable cast iron pipe 6 is attached to the pipe 1, and the insertion part 3 of this pipe 1 has a V4
mounted so that they touch each other. As shown in the figure, the radially inner extension 7 of the flange of this tube 6 is connected to the insertion
, the top of the end 9 of this flange extension is welded to the tube at position 8 . A plurality of straight webs 10 are placed around the sides of the flange 6 and into the insert.

The socket flange 11 is mounted so as to form a fixed annular member around the tube socket in use.

This socket flange 11 is an iron ring 12 with a rectangular cross section (Fig. 2), and its inner diameter is larger than the outer diameter of the socket.
Z+! I can do that. Possible cvjn shoe 13.1
3. ... is aligned between the sockets 4 of the ring 12 of the socket flange and each vertex of the helical shape of the ring 12 of the socket flange. This shoe 13 has a rear shoulder portion 18 facing radially outward and a convex portion 30 facing radially inward.

The number of rings and therefore the number of shoes used depends on the outer diameter of the tube.

The shoe 13 and ring 12 of the flange 11 are shaped to allow the joint to be bent appropriately.

The elongated portion 31 of each shoe 13 extends beyond the flange 6 of the insert and radially outwardly of this flange 6 when the shoe is installed.

The elongated portion 31 of each shoe has a radially inwardly extending shoe flange 32.
extends behind the insert flange, this shoe flange 32 having an inwardly directed tongue 33 which, in use, fits into an annular groove 34 around the insert flange 6. Engage. Each shoe flange 32 is accurately positioned relative to the insert flange 6 by bolts 35 and nuts 34. This bolt 35 passes through appropriate holes 37, 38 in the shoe flange and insert flange.

After the fitting is installed and the insert and socket are engaged, the ring 12 is fitted over the socket h4. Next, the eight shoes are attached to each apex portion 22 of the one foot 12 by lFt.
the shoe 13, the bolt 36, and the tube 2.
An assembly comprising the above-mentioned shoe.

-13 engages with the outer inclined surface of the socket 4, and the tongue-like part 33 of the shoe flange 32 is pulled to a position where it engages with the flange 34 of the insertion part 6, and the flange of the IΦ entry part and the socket flange assembly The action of the ring 12 holds the protrusion 30 of the shoe behind the socket, and the protrusion 30 firmly holds the joint. Thereafter, the bolt 35 and nut 36 are screwed together to firmly fix the shoe to the insertion flange. The shoe ring is secured by the rear shoulder 18.

Next, the joint shown in FIGS. 3 to 5 has two malleable cast iron pipes 41 and 42, and the malleable VI iron pipes 41 and 42 include an insertion part 43 and a socket 44, and this insertion part 43 A resilient sealing member 4 is disposed within the annular space between the socket 44 and the socket 44.
5, and this sealing member 44 prevents leakage from the joint portion of the pipe.

A malleable cast iron insert flange 46 is attached to tube 41 adjacent insert 43 . As shown in the figure, the radially inner portion 47 of the insertion portion flange is connected to the insertion portion 4.
3, and the side of the end 49 of the portion bent toward this insertion portion 43 is welded in position 1, indicated by reference numeral 48. A plurality of straight webs 50 are attached around the side of the flange 6 facing the insert.

In use, the socket flange assembly 51 is attached around the tube socket to provide a fixed annular member. As shown in FIG. 4, the socket flange assembly is a malleable cast iron ring 52 having a polygonal shape (t-shaped in the figure), this ring 52 has a circular cross section, and the inner diameter of this ring 52 is Larger than the outer diameter of the socket 1~, this ring 52 is aligned with the outside of said socket 1~ before use. A shoe 53 of malleable cast iron connects the ring 52 and the socket 44. and are aligned with each side of this ring 52. Each shoe has a hole 54, and the hole 5
The head 55 of a bolt 56 is inserted into 4, and this bolt 55 is screwed into the nuts 1 to 57 through the insertion part flange 46.

The shoe 53 and ring 52 of the flange assembly 51 are shaped to move axially to receive the joint, and the receiver is configured to appropriately bend the received joint.

When installing this joint, the nt ring 52 is placed over the socket 54. Next, one of the eight shoes is placed inside each vertex angle 62 of the ring 52 by 8IS. A bolt 56 is previously attached to this ring 52 and extends from this point 52. Next, shoe 53
, bolt 56, and ring 52, the shoe 5
3 engages the sloped outer surface of socket 1-44. Next, the bolt is passed through the hole 59 of the insertion portion flange, and the nut 57 is screwed onto the bolt to connect the insertion portion flange 46 and the shoe 53.

Said ring 52 is fixed to said shoe 53 by a shoulder 58.

The structure, which is not shown in FIG. 6, is almost the same as the structure shown in FIGS. 3 to 5, except that the ring 60 is circular, and correspondingly, an arcuate shoe 61 is provided inside the ring 60. This is the point where it can be attached. Even with this structure (not shown)
, the bolt is in the shoe and projects from the shoe to engage the insert.

The structure shown in FIGS. 7 to 9 is almost the same as the structure shown in each of the previous figures, and the difference is that the socket flange is composed of a plurality of connecting members 65, and the bolt 56 engages with the insertion part 46 to form a link. This is the point where the action of the pivot axis is changed. Figures 7 and 8
As shown in the figure, the socket flange may have a circular shape with uniform inner and outer diameters, or as shown in FIG. It is also possible to provide a hole 64 for the bolt 56 in the portion 63 to particularly increase the strength. In a joint with a welded insertion flange as shown in this figure, the socket flange can be easily attached around the socket pipe without compromising the strength of the completed joint.

It should be noted here that the embodiments shown in Figures 1 and 2 omit the assembly of the insertion part flange and socket flange, which is normally required for a steel clamping bar with a large bearing capacity. can do.

Therefore, it is possible to reduce the price of this type of fitting and prevent corrosion, especially for pipes that can be used underground. Furthermore, by using a shoe as shown in FIGS. 1 and 2 instead of the tightening bar, the flange of the insertion portion can be made smaller, and the axial direction of the hole in the tube of the insertion portion can be made smaller. Bending strain can be significantly reduced.

The structures shown in Figs. 3 to 6 are extremely easy to adjust in the @ line direction, whereas the structures shown in Figs. This is especially useful when using

[Brief explanation of drawings]

FIG. 1 is a partial elevational view of one shape of the two-pipe connection clamp according to the present invention, FIG. 2 is an end view of the socket flange of the joint shown in FIG. 1, and FIG. Figures 4 and 5 are partial views of the joint in Figure 3, Figure 6 is a partial sectional view of a modified part of the joint in Figure 3, Figure 7 is a partial elevational view of a joint with the shape of The figure is a partial elevational view of the third shape of the two-pipe connection group according to the present invention, and FIGS. 8 and 9 are partial perspective views showing modifications of the joint shown in FIG. 7. 1.2, 6.41.42... Pipe, 3.43... Insertion part, 4.44.54... Socket, 5, 45... Seal member, 6.46... Insertion part Flange, 10.50
... Web, 11 ... Socket flange, 12.5
2゜60... ring, 13.53.61... shoe, 1
8... Shoulder part, 30... Convex part, 32... Shoe flange, 33... Tongue part, 34... Full, 35.36.
...Bolt, 36°57...Nut, 37,38.5
4... Hole, 51... Flange assembly.

Claims (1)

[Claims] 1. An insertion part flange is welded to the insertion part of one pipe, this insertion part flange is in a position where it can be inserted into the socket of the other pipe, and a socket flange assembly is arranged around this socket. the insertion portion flange and the socket flange assembly are coupled by a retaining member connected thereto, and the socket flange assembly aligns the ends of the socket of the tube in a circular manner during use, and the socket flange A tubular joint with a welded flange characterized by a composite structure for engaging and supporting the socket. 2. The socket flange assembly has a larger diameter than the socket, is in the form of a continuous ring, and has a plurality of shoes, each of which can be coupled with an insert flange, The flange-welded tubular joint according to claim 1, which is spaced apart around the periphery and is located between the ring and the socket and supported by the socket when coupled to the insertion part flange. . 3. The shoe has an elongated portion that is attached directly to engage the insert flange to at least retain the retaining member between the insert flange and the socket flange assembly. A tubular joint with a welded flange according to claim 2, characterized in that it is of partial construction. 4. The tubular shape with a welded flange as set forth in claim 2, wherein the holding member has a bolt and a nut, and the bolt is inserted into a suitable hole in the shoe and the insertion part flange. Fittings. 5. Each shoe has a shoulder portion facing outward in the radial direction and a convex portion facing inward in the radial direction at a position closest to the ring side of the end farthest from the insertion portion flange, and this shoulder A tubular joint with a welded flange according to any one of claims 2 to 4, wherein the socket and the convex part support the socket. 6. The flange-welded tubular joint according to any one of claims 2 to 5, wherein a shoe is assembled to each vertex of the continuous octagonal ring. 7. The socket flange assembly comprises a plurality of connectable members, the connectable members being engaged around the socket and being engaged with the insert flange by a retaining member. A tubular joint with a welded flange according to scope 1. 8. The flange according to claim 7, wherein the holding member includes a bolt and a nut, and the bolt is inserted into a suitable hole in the socket flange assembly and the insertion part flange. Welded tubular fittings. 9. An insertion section flange welded around an insertion section of one tube, and a socket flange assembly provided around a second tube adjacent to the tube, the insertion section flange and the socket flange The assembly is joined by a retaining member connected therebetween, the socket flange assembly capable of assembling the socket into a circular shape and engaging the socket when used as a coupling. A connecting part assembly for a joint characterized in that it supports. 10. The socket flange assembly has a diameter larger than that of the socket to be matched, is in the form of a continuous ring, and has a plurality of shoes, each of which can be coupled with an insert flange. , spaced apart around the ring, and located between the ring and the socket when coupled to the insertion part flange and supported by the socket, according to claim 9. assembly. 11. The socket flange assembly comprises a plurality of connectable members that engage around the socket and are coupled to the insert flange by a retaining member. 10. A joint assembly according to claim 9.