JPH01156400U

JPH01156400U -

Info

Publication number: JPH01156400U
Application number: JP5275988U
Authority: JP
Priority date: 1988-04-21
Filing date: 1988-04-21
Publication date: 1989-10-27

Description

[Brief explanation of the drawing]

第１図は、ガス漏れ防止装置の縦断面図、第２
図は、ガス漏れ防止装置の水平断面図、第３図は
、球体弁押し棒の作動状態を示す縦断面部分図、
第４図は、ガス配管水封弁に取り付けられたＵ字
型ドレントラツプにガス漏れ防止装置を取り付け
た実施例、第５図は、ガス配管に取り付けられた
Ｕ字型ドレントラツプにガス漏れ防止装置を取り
付けた実施例である。１……外箱、２……水によつて浮力を受ける球
体弁、３……覗き窓、４……弁座、５……蓋、６
……球体弁押し棒、７……ガスケツト、８……外
箱フランジ部、９……外箱くびれ部、１０……突
起部、１１……ガイド、１２……ガス配管、１３
……水封弁、１４……立ち下り管、１５……ドレ
ントラツプ、１６……ガス漏れ防止装置。 Figure 1 is a longitudinal sectional view of the gas leak prevention device, Figure 2 is a longitudinal sectional view of the gas leak prevention device;
The figure is a horizontal sectional view of the gas leak prevention device, and FIG. 3 is a vertical sectional partial view showing the operating state of the spherical valve push rod.
Figure 4 shows an example in which a gas leak prevention device is attached to a U-shaped drain trap attached to a gas piping water seal valve, and Figure 5 shows an example in which a gas leak prevention device is attached to a U-shaped drain trap attached to a gas piping. This is an example of how it was installed. 1... Outer box, 2... Spherical valve that receives buoyancy from water, 3... Peephole, 4... Valve seat, 5... Lid, 6
... Ball valve push rod, 7 ... Gasket, 8 ... Outer box flange, 9 ... Outer box constriction, 10 ... Protrusion, 11 ... Guide, 12 ... Gas piping, 13
... Water seal valve, 14 ... Down pipe, 15 ... Drain trap, 16 ... Gas leak prevention device.

Claims

[Scope of Claim for Utility Model Registration] (1) A spherical valve 2 that floats due to the buoyancy of water is placed inside the outer box 1, and a constriction 9 at the bottom of the outer box 1 is placed inside the outer box 1.
A valve seat 4 having an inner diameter smaller than the outer diameter of the spherical valve 2 is attached to the inner surface of the outer box 1, and a guide 11 for guiding the spherical valve to the valve seat 4 is provided on the inner upper part of the constricted part 9. A gas leak prevention device with projections 10 attached. (2) The gas leak prevention device according to claim 1, wherein a lid 5 for attaching and detaching the spherical valve 2 and the valve seat 4 is attached to the side surface of the outer box 1. (3) The gas leak prevention device according to claim 1, wherein a viewing window 3 is attached to the side surface of the outer box 1 or the lid. (4) A spherical valve 2 is installed on the upper side of the constriction 9 of the outer box 1.
2. A gas leak prevention device according to claim 1, further comprising a spherical valve pusher rod 6 for separating the valve seat 4 from its tight contact with the valve seat 4. (5) A drain trap equipped with the gas leak prevention device according to claim 1.