JPS5823119Y2 - Cooling tower watering system - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water sprinkling device in which a spray header is supported in a manner that allows smooth rotation and prevents water leakage from the spray header portion even when the amount of water supplied in a cooling tower is reduced.

Conventionally, in a cooling tower, a spray header having a nozzle is rotated by the reaction of cooling water jetted from a nozzle above the filler to uniformly spray water from above the filler to cool the filler.

At this time, it is desirable to rotate the spray header as smoothly as possible in order to uniformly spray water onto the filler and improve the cooling effect of the cooling water.

Furthermore, it is desirable to allow the spray nozzle to rotate smoothly and not get wet even if the supply amount is reduced due to the reaction force of the cooling water ejection rather than the nozzle.

The present invention was devised in view of this, and will be described below based on examples.

In the figure, 1 is a water supply pipe led to a position above the filling material of the cooling tower, and a header receiver 2 is fixed to the tip of this water supply pipe 1 by screwing or other means.

The cooling water from the water supply pipe connected to the lower part of the header receiver 2 is made to flow out to the outer circumference of the header receiver through a hole 2a opened on the side of the header receiver. Implant shaft 4.

The fixed shaft 4 is generally made of a non-rusting metal such as stainless steel, and the header receiver 2 is made of the same metal as the fixed shaft or a corrosive synthetic resin such as ABS.

Further, a rotatable spray header 5 is provided on the outer periphery of this header receiver.

This spray header 5 is made of metal such as stainless steel or AB.
It is made of synthetic resin such as PVC and has an inverted cup shape with a short tubular joint on the outer periphery, the diameter of which is set so that it is fitted at the required interval from the outer peripheral surface of the header holder, and the center of the top A boss 6 is integrally provided in the.

This boss 6 is fitted onto a metal fixed shaft 4, and is formed into a cylindrical shape of a required length using a synthetic resin or other material with excellent wear resistance so that it can be rotated smoothly.This boss 6 is rotated as a spray header. and are integrally formed so as to fit together so as not to slide.

Also, a short inner tube 5a is integrally provided inside the spray header 5, but this inner tube 5a is closer to the inner tube 5a than the attachment portion 5b of the spray pipe 3 provided on the lower outer periphery of the spray header.
In addition, there is a gap between the inner tube 5a and the lower outer circumferential surface of the header receiver so that the top end of the inner tube 5a is in an upper position, and the inner tube 5a has a gap to the extent that the two do not come into contact with each other.

In this case, since the top end of the inner tube 5a is located above the attachment section 5b of the spray pipe, and the water head is larger at the attachment section 5b, almost all the cooling water flows to the attachment section 5b, and the inner tube 5a There is little water leakage between the head and the outer peripheral surface of the lower part of the holder.

In addition, the narrower and longer the gap between the two, the greater the resistance to water leakage, so water leakage can be reliably prevented.

Further, in order to more reliably prevent water leakage, protrusions that fit into the spray header and the header receiver may be provided as shown by chain lines in the figure.

The spray pipe 3 having a large number of nozzle holes is connected to the attachment portion 5b of the spray header 5 by threading or other directions.

The cooling water now supplied from the water supply pipe 1 is guided into the spray header through the hole 2a of the header receiver 2, and is jetted out through each nozzle hole of the spray pipe 3 via the joint.

The spray header is rotated smoothly by the reaction force of the jet from the nozzle hole.

In this case, the cooling water discharged from the hole 2a of the header receiver is spouted from the spray pipe located below the upper end surface of the inner pipe of the spray header, so the cooling water is supplied through the water supply pipe. Even if the internal pressure of the spray header decreases as the amount decreases, a certain amount of water pressure is maintained due to the difference between the upper end surface of the inner tube and the spray pipe, and the spray header rotates slowly without stopping.

In addition, a boss is attached to the spray header that fits on the fixed shaft, and the boss supports the spray header rotatably in the header holder and prevents it from wobbling. Therefore, there is little resistance to rotation and vibration, and the spray header rotates smoothly.

Furthermore, since the gap between the spray header and the header receiver is long and the upper opening position of this gap is located above the spray pipe attachment position, there is an advantage that water leakage can be prevented more reliably.

[Brief explanation of the drawing]

FIG. 1 is a front view with the left half sectioned, and FIG. 2 is a plan view. 1... Water supply pipe, 2... Header holder, 2
a...hole, 3...spray pipe, 4
...Fixed axis, 5...Spray header,
5a...Inner pipe, 5b...Mounting part, 6.
·····boss.

Claims (1)

[Scope of utility model registration request] A fixed shaft is installed vertically protruding from the top of the header receiver connected to the tip of the water supply pipe, and a spray pipe is connected horizontally to the outer periphery of the lower part.The top of the spray header has a boss of the required length that is inserted into the fixed shaft. is attached, and the spray header is rotatably supported on the header receiver via the boss, and the lower inner surface of the spray header is opposite to the header receiver, and its top edge is higher than the spray pipe installation position. A cooling tower water sprinkling device characterized in that an inner pipe is integrally attached so that the inner pipe has a length, and the gap between the header receiver and the lower part is made as narrow as possible.