JPS63128385U

JPS63128385U -

Info

Publication number: JPS63128385U
Application number: JP17131486U
Authority: JP
Priority date: 1986-09-17
Filing date: 1986-11-10
Publication date: 1988-08-22

Description

[Brief explanation of drawings]

第１図は本考案のフランジを用いた管接続部の
第一実施例を示す半部縦断面図、第２図はこの管
接続部に組み込むシール材を形成する状態を示す
部分拡大断面図、第３図は第二実施例を示す第１
図同様の図、第４図は第三実施例を示す部分拡大
縦断面図、第５図は互いに捻れた位置関係にある
管同士を接続する状態を示す略側面図、第６図は
従来構造の第１例を示す第１図同様の図、第７図
は同第２例を示す縦断面図、第８図は使用するシ
ール材の１例を示す部分拡大縦断面図、第９図は
ボルトとナツトとを不均等に緊締した状態を示す
第７図同様の図、第１０図は第一、第二の両フラ
ンジの間でシール材の一部が強く挾持された状態
を示す第９図の左半部に相当する図、第１１図は
強く挾持される事によつて変形したシール材を示
す第１０図のＡ部拡大断面図である。１：固定側排気管、２：接続側排気管、３，４
：フランジ、５：受面、６：嵌合面、７：シール
材、８ａ，８ｂ：円孔、９：第一の管、１０：第
一のフランジ、１１：シール材、１３：第二の管
、１３ａ：端部、１４：第二のフランジ、１５：
耐火剤、１６：金属薄板、１７：第一のフランジ
、１８：第二のフランジ、１９：基部、２０：段
部、２１，２１ａ：傾斜面、２２：上型、２３：
下型。 FIG. 1 is a half longitudinal sectional view showing a first embodiment of a pipe connection using a flange of the present invention, and FIG. 2 is a partially enlarged sectional view showing a state in which a sealing material is formed to be incorporated into this pipe connection. FIG. 3 shows the first embodiment showing the second embodiment.
Figure 4 is a partially enlarged longitudinal sectional view showing the third embodiment, Figure 5 is a schematic side view showing a state in which pipes are connected in a twisted positional relationship, and Figure 6 is a conventional structure. FIG. 7 is a longitudinal cross-sectional view showing the second example, FIG. 8 is a partially enlarged longitudinal cross-sectional view showing an example of the sealing material used, and FIG. 9 is a similar view to FIG. FIG. 7 is a similar view showing a state in which the bolt and nut are tightened unevenly, and FIG. 10 is a similar view to FIG. FIG. 11, which corresponds to the left half of the figure, is an enlarged sectional view of section A in FIG. 10, showing the sealing material deformed by being strongly clamped. 1: Fixed side exhaust pipe, 2: Connection side exhaust pipe, 3, 4
: flange, 5: receiving surface, 6: fitting surface, 7: sealing material, 8a, 8b: circular hole, 9: first pipe, 10: first flange, 11: sealing material, 13: second Pipe, 13a: End, 14: Second flange, 15:
fire retardant, 16: thin metal plate, 17: first flange, 18: second flange, 19: base, 20: step, 21, 21a: inclined surface, 22: upper mold, 23:
Lower mold.

Claims

[Scope of utility model registration request]

A first flange is fixed to the outer circumferential surface of the end of the first pipe with a part protruding beyond the edge of the first pipe, and the first flange is fixed to the outer circumferential surface of the end of the first pipe, and the opposite side of the first flange to the first pipe is A mortar-like inclined receiving surface is formed on the inner peripheral edge of the opening, a second flange is fixed to the outer peripheral surface of the end of the second pipe, and a second pipe protrudes from the second flange. The first flange and the second flange are connected in a state in which a closed annular sealing material fitted onto the outer peripheral surface of the end or the outer peripheral surface of the short cylindrical base formed on the second flange is aligned with the receiving surface. In a pipe connection using a flange, the first and second pipes are joined in an airtight state by aligning them with each other and joining both flanges with bolts and nuts. At least one of the sealing material that is aligned with the receiving surface formed on the first flange and the tip of the base of the second flange is provided with a conical inclined surface that is in close contact with the receiving surface. A pipe connection using flanges, characterized in that the flanges are formed in advance prior to joining the flanges.