JPH0240168U

JPH0240168U -

Info

Publication number: JPH0240168U
Application number: JP11809488U
Authority: JP
Priority date: 1988-09-08
Filing date: 1988-09-08
Publication date: 1990-03-19

Description

[Brief explanation of the drawing]

第１図は本考案に係るプラグの断面図、第２図
は圧力逃し中のプラグの状況を示す断面図、第３
図はグリース注入中のプラグ状況を示す断面図、
第４図は圧力計で越ガスを測定中のプラグの状況
を示す断面図、第５図は従来のプラグの断面図、
第６図は特殊な圧力逃し工具を用いて圧力逃し中
の従来のプラグを示す断面図である。１……プラグ本体、４……圧力逃し通路、６…
…ボール弁、９……分岐ポート、１１……ステイ
ンガー、１６……シールリング、１７……グリー
ス注入通路、１８……グリース注入通路入口、２
０……キヤツプ、２１……バルブ、２２……放散
孔。 Fig. 1 is a sectional view of the plug according to the present invention, Fig. 2 is a sectional view showing the state of the plug during pressure relief, and Fig. 3 is a sectional view of the plug according to the present invention.
The figure is a cross-sectional view showing the plug status during grease injection.
Figure 4 is a cross-sectional view showing the state of the plug while measuring excess gas with a pressure gauge, Figure 5 is a cross-sectional view of a conventional plug,
FIG. 6 is a cross-sectional view of a conventional plug during pressure relief using a special pressure relief tool. 1...Plug body, 4...Pressure relief passage, 6...
... Ball valve, 9 ... Branch port, 11 ... Steinger, 16 ... Seal ring, 17 ... Grease injection passage, 18 ... Grease injection passage inlet, 2
0...cap, 21...valve, 22...dissipation hole.

Claims

[Claims for Utility Model Registration] 1. A ball valve chamber is formed on the inlet side of the pressure relief passage, a normally closed ball valve is installed in this ball valve chamber, and the ball valve in this ball valve chamber is pushed in with a stayer. A branch port is formed in the pressure relief passage following the ball valve chamber, a grease injection passage is branched from the branch port, and the entrance of the grease injection passage is configured to be openable and closable with a cap; A pressure relief plug for ball valves featuring: 2. A needle valve seat is formed at the inlet of the branch port, and the fluid entering the branch port can be shut off by bringing the needle valve formed on the steiner into close contact with the needle valve seat after opening the ball valve. A pressure relief plug for a ball valve according to claim 1, configured as follows. 3. The pressure relief plug for a ball valve according to claim 1, wherein a pressure gauge can be attached to the inlet of the grease injection passage.