JPS62166486U - - Google Patents

Description

[Brief explanation of the drawing]

The figures relate to this invention; Fig. 1 is a schematic diagram of a cross-flow cooling tower incorporating a blowdown device according to an embodiment of this invention, and Fig. 2 shows a water introduction shortcut in the blowdown device. FIG. 3 is a plan view for explaining the positional relationship between the downward discharge port of the pipe and the upper end of the opening of the overflow pipe, and FIG. 4, 5 and 6 are longitudinal sectional front views showing alternative embodiments of the rotating means, respectively, and FIGS. 7 and 8 are side views of FIGS. 5 and 6, respectively. Explanation of the main symbols in the diagram, A... Cross-flow cooling tower, 18... Overflow pipe, B... Flow down device, 20... Flow down pipe, 30... Water guide short pipe, 40... Rotation means.

Claims (1)

[Claims for Utility Model Registration] (1) A direct flow type that discharges a portion of the cooling water sprayed onto the cooling tower filling material to the outside of the tower to maintain a constant concentration of impurities contained in the circulating cooling water. In a cooling tower blowdown device, an upper water tank is installed near the exhaust pipe located at the top of the cooling tower, and below the bottom of this upper water tank, the filler material is filled into the cooling tower main body facing the outside air intake. A blowdown pipe is installed along the inner edge of the filler near the exhaust pipe, and is installed almost vertically in the space directly below the exhaust pipe within the main body of the cooling tower. The intake port opens and is fixedly connected to the bottom of the upper water tank, and at the lower end of the blowdown pipe, there is a base of a horizontal short pipe for adjusting the blowdown flow rate, which is movable around the axis of the blowdown pipe. , are connected via a rotating means, and the downward discharge port at the tip of this short water guide pipe is located at the upper end of the opening of an overflow pipe provided in the lower water tank of the cooling tower located directly below the exhaust pipe. In a cross-flow cooling tower, the movement range of the water guiding short pipe is such that the discharge port traverses the upper end of the opening of the overflow pipe in the diametrical direction, and the discharge port can be fixed at an arbitrary movement position. Blowdown equipment. (2) The blowdown device for a cross-flow cooling tower according to claim 1, wherein the outside air intake is provided in two directions. (3) The inner diameter of the downward outlet of the short water guide pipe is approximately one third of the inner diameter of the overflow pipe, and the moving and fixed position of this outlet varies from the position where it is completely removed from the overflow pipe to the position where it completely wraps around. A blowdown device for a cross-flow cooling tower as set forth in claim 1 of the utility model registration claim. (4) The rotating means integrally connects a 90-degree bent elbow pipe that can freely swing with respect to the lower end of the blowdown pipe to the water guide short pipe, and bored an elongated hole in the peripheral wall of one end of the elbow pipe. The cross-flow cooling tower is constructed by screwing a set screw which can be slid into this hole into the lower end of the blowdown pipe, and the cross-flow cooling tower according to claim 1, 2, or 3 of the utility model registration claim. blowdown equipment. (5) The blowdown pipe is made of steel, an elongated groove is carved around the lower end of the blowdown pipe, and a set screw that is slidable inside the groove is integrally connected to the base of the water conduit pipe. A blowdown device for a cross-flow cooling tower according to claim 1, 2, or 3, wherein the rotating means is configured to protrude from the inner surface of an elbow pipe bent at 90 degrees. . (6) A ring-shaped groove is carved on the outer periphery of the lower end of the blowdown tube, and a ring-shaped groove opposite to this groove is formed on the inner surface of the 90-degree bent elbow tube integrally connected to the base of the short water guide tube. In the cross-flow type cooling tower according to claim 1, 2 or 3 of the utility model registration claim, the rotating means is constructed by forming grooves and closely fitting an O-ring between the grooves. Blowdown equipment. (7) A ring-shaped groove is formed around the entire lower end of the blowdown tube, and a set screw that is slidable inside the groove is integrally connected to the base of the short water guide tube, and the inner surface of the elbow tube is bent at 90 degrees. A blowdown device for a cross-flow cooling tower according to claim 1 or 3, wherein the rotating means is configured to protrude from the cross-flow cooling tower.