Building fire sprinkler water pressure control system

摘要

The present invention provides a branch pipe (50) such that water in the water tank or water directly from the water pipe is supplied at a constant pressure to the sprinkler head (60) installed at the end of the branch pipe (50) through the pipe pipe (80) and the joint (70) when a fire occurs. In the water pressure control device for building fire-fighting that is pipe-joined, it is a rectangular box body that is bisected up and down and fastened and fixed by a fastening bolt (18), and a joint-side branch pipe (51) is pipe-coupled to one end and connected to one side pipe hole (11a) ) is formed, and at the other end, the other joint pipe 12 having the other side pipe hole 12a to which the sprinkler head side branch pipe 52 is pipe-coupled and connected is formed, respectively, the body In the center, a circular working recess 13 communicating on an extension line of the one side pipe hole 11a and the other side pipe hole 12a and forming a circular shape in a plane is formed as a recess, respectively, and the circular working recess 13 protrudes from the center side directly up and down. Flow guide bars 14 for guiding the flow of fire extinguishing water from which the wedge 14a protrudes toward the side pipe hole 11a into which the fire water is introduced into the circular column shape to be flowed to the outside of the circular operation recess 13 are formed, respectively, and the circular operation A pipe projecting upward and downward in the recess 13, having left and right communication holes 15c and 16c communicating on an extension line of one side pipe hole 11a and the other side pipe hole 12a, respectively, and an insertion hole 15a formed through the upper and lower sides in the center of the upper surface. , 16a) and each having insertion grooves 15b and 16b that are recessed in the left and right vertical directions in the insertion holes 15a, 16a, respectively, the left and right semi-circular pipe projections 15 and 16 are formed, and one joint pipe ( 11) the upper and lower water pressure control body (10, 10a) in which the left and right end packing grooves (17, 17a) respectively formed in recesses from the left and right ends to the left and right ends of the other joint pipe (12) through the front end of the body are formed; An arc-shaped ring body 21, an arc-shaped ring chain positioned between the inner surface of the circular operating recess 13 of the upper and lower water pressure control bodies 10 and 10a and the left and right semi-circular protrusions 15 and 16, respectively, is formed, and the arc-shaped Insertion extension grooves 22 are respectively formed on the inner surface of the ring body 21 in an extension line of the insertion grooves 15b and 16b, and the left and right semi-circular tube protrusions 15 and 16 according to the pressure strength of the fire water flowing into the one tube hole 11a. ) of the left and right water pressure control rings (20, 20a) that protrude or sink in the left and right sides of the space between the rear Yeongtong hole (16c) and the other tube hole (12a) to keep the pressure of the fire water flowing into the other tube hole (12a) constant; One side of the upper and lower water pressure control body (10, 10a) and the left and right semi-circular tube protrusions (15, 16) vertically erected insertion rods 32 inserted into the insertion holes (15a, 16a) are respectively formed, the insertion rod (32) Left and right elastic support plates 30 and 30a extending from one side through the insertion grooves 15b and 16b and having an elastic plate spring 31 that is inserted into the insertion extension groove 22 of the left and right hydraulic pressure control rings 20 and 20a ); And it relates to a building fire sprinkler water pressure control device having left and right end packings (40, 40a) which are respectively inserted and fixed into the left and right end packing grooves (17, 17a) of the upper and lower water pressure control bodies (10, 10a) with rubber packings. According to the present invention, the fire water flowing into one side tube of the upper and lower water pressure control body is spread to the entire circular operation key by the flow guide bar, and the left and right water pressure control rings are automatically installed between the rear communication hole and the other side tube according to the water pressure of the fire water flowing into the one side tube hole. It has the effect of automatically maintaining the water pressure of the fire water discharged to the sprinkler head through the branch pipe on the sprinkler head side regardless of the strength or weakness of the water pressure of the fire water flowing in through the branch pipe on the joint side.