Pressure receiving section structure of high pressure-resistant vacuum switch and vacuum switch for vacuum type sprinkler system

摘要

Topic In the vacuum type sprinkler, when the compressed water is supplied to the said pipe arrangement at the time of fire, the fact that the vacuum switch breaks with positive pressure is prevented.SolutionsCenter section 70d of diaphragm 70 of the resin film make from both sides side is inserted with rigid component 66 and 74. These components it stores in the space 62 inside container 44 where 70, 66 and 74 is communicated to the degree of vacuum supervisory target space 36. In container 44 supporting the margin 70c of the diaphragm in airtightness, the space 62the side which is communicated to the degree of vacuum supervisory target space 36 with these components 70, 66 and 74 in the space 62b the side which is communicated to the air it divides the space 62 in airtightness. Both rigid component 66 and 74 inside three-dimensional 62 it makes movement possible with deflecting the surface field 70a which has been exposed with center section 70d of the diaphragm and margin 70c. In each rigid component 66 and 74 operation spring tension respectively from both sides side of diaphragm 70. The degree of vacuum of the degree of vacuum supervisory target space 36 is detected both rigid component depending upon the portable position of 66 and 74. Choice figure Drawing 1