RU2335722C2 - Cooling tower - Google Patents

Abstract

FIELD: heating; motors and pumps.

SUBSTANCE: cooling tower contains housing with open in bottom air inlet openings and watershed, axial blower located in the place of convergent pipe and diffuser coupling and water-distributing facilities. Tower also consists of hydraulic drive connected with axial blower. In addition, axis of hydraulic drive rotation is combined in space with axial blower axis of rotation. Axial blower shaft is connected with hydraulic drive shaft through centrifugal coupling where hollow shaft is fast fixed with hydraulic drive shaft. Hollow shaft is inserted into bushing connected to distribution header pipe. At the same time bushing is a housing of friction bearing. Hydraulic drive is represented in the form of Segner wheel consisting of two parallel lines of pipes arranged crossways. Water distributing facilities in the shape of slotted injectors are located at the ends of pipes. Axial blower is mounted on support fixed to bean and girder floor. Hydraulic drive support is fixed to axial blower support.

EFFECT: invention allows for improving return water cooling effectiveness and reducing energy consumption during cooling tower operation and capital costs during tower construction.

3 cl, 2 dwg

Description

The invention relates to the field of power engineering, in particular to contact heat exchangers, such as cooling towers, and can be used at enterprises of the chemical and energy industries for cooling circulating water.

Known cooling towers with natural draft used for cooling recycled water of industrial production, including a tower building with an open lower belt and a water conduit with water distribution devices located inside the case. In these cooling towers, the reverse cycle water to be cooled from the production room is fed to the cooling tower and flows through the internal casing to the water distribution devices. In this case, the plane of placement of water distribution devices is located at a certain height in the tower body. These devices cut the total flow into many small jets, drops and films, increasing the open contact surface of the stream. The resulting jets, drops, and films are then freely fed into the lower part of the tower on a collecting pan (Handbook of Heat Exchangers in 2 volumes, trans. From English, edited by OG Martynenko, volume 2, pp. 128-129, Sect. . 3.12.3, Fig. 1).

Known cooling tower containing a housing with two tiers of sprinkler, with a Central air supply pipe and with intake windows. A tray for collecting chilled water is located in the lower part of the casing, and a fan and a water-spraying device are placed above the irrigation tiers in the upper part of the casing, supplying cooled water down to the upper tier sprinkler (SU 1332131 A1, published on 08.23.1987).

This cooling tower virtually eliminates the mixing of flows supplied to the cooling and chilled water flowing into the pan, however, it has a rather complicated design, which increases capital costs during construction.

Known cooling tower containing a housing with air intake windows, equipped with a segner wheel and a fan mounted on one shaft (AS USSR No. 1210045, publ. 07.02.86).

Known cooling tower, comprising a housing with open below the free intake openings, a drainage basin located under the housing, located above the housing axial fan, located in the zone of junction of the confuser and diffuser, water distribution devices. The tower contains a droplet eliminator located in the upper part of the housing under the fan confuser shell, a central shell mounted coaxially to the housing between the pool and the droplet eliminator, a nozzle located in the gap between the housing and the central shell above the upper cut of the air inlet windows and below the droplet eliminator, a collector system with nozzles located between the housing and the central shell in the vertical gap between the nozzle and the drip catcher, equipped with an additional device, nnym frustoconical (Patent RU 2107873, publ. 27.03.1998).

This cooling tower has a rather complex and metal-intensive design, has a fairly high energy consumption.

The technical problem solved by this invention is to increase the efficiency of cooling circulating water, reducing power consumption during operation of the cooling tower, reducing capital costs during its construction.

The problem is solved in that the tower comprising a housing with open at the bottom air intake openings and a catchment basin, an axial fan located in the junction of the confuser and diffuser, water distribution devices, contains a hydraulic actuator connected to the axial fan, while the axis of rotation of the hydraulic actuator is aligned in space with the axis of rotation of the axial fan, the shaft of the axial fan is connected through a centrifugal clutch to the hydraulic drive shaft, on which the hollow shaft is fixed, which put into the sleeve, the tube attached to the distribution manifold and provides a housing sliding bearing, is formed as a hydraulic segner wheels, consisting of two parallel rows crosswise arranged tubes which are located at the periphery of the water distribution device, which are slotted nozzles.

In addition, the axial fan is mounted in a support fixed to the beam ceiling.

In addition, the support of the hydraulic drive is fixed to the support of the axial fan.

The invention is illustrated by drawings.

Figure 1 is a longitudinal section of a cooling tower.

Figure 2 is a cross section of the impeller of the hydraulic actuator.

The cooling tower is a casing comprising a cylindrical part 1 with open air intake openings 2 and a drainage basin 3, water traps 4, film sprinkler shields 5, a confuser 6 and a diffuser 7. An axial fan 9 is located in the joint zone 8 of the confuser 6 and the diffuser 7, connected to the hydraulic actuator 10, while the axis of rotation of the hydraulic actuator 10 is aligned in space with the axis of rotation of the fan 9. The axial fan 9 is installed in the support 11, mounted on the beam floor 12. The shaft 13 of the fan 9 through the center the clutch 14 is connected to the shaft 15 of the hydraulic actuator 10. The support 16 of the hydraulic actuator 10 is mounted on the support 11 of the fan 9. The hollow shaft 17 of the hydraulic actuator 10 is fixedly mounted on the shaft 15 of the hydraulic actuator 10, inserted into the sleeve 18, which is a plain bearing housing, which is connected to the pipe of the distribution manifold 19, connected to the inlet pipes 20. The hydraulic actuator 10 is made in the form of a Segner wheel, consisting of two parallel rows of crosswise arranged pipes 21, on the periphery of which water distribution devices are located, pre resents a slotted nozzle 22.

The work of the proposed cooling tower is as follows. The warm water used in the production process under excessive pressure enters the inlet pipes 20 through the distribution manifold 19 into the pipes 21. The kinetic energy of the water flowing out of the slotted nozzles 22 creates enough torque to rotate the hydraulic actuator 10 and, therefore, the fan 9. Thanks to the work fan 9 intensifies the upward flow of cooling air entering through the air intake openings 2, which is in contact with liquid particles flowing from the slotted nozzles 22 and moving down due to gravity. Upon contact with air, the temperature of the liquid particles decreases both due to evaporation and due to convective heat transfer, and they flow in the form of jets through the shields of the film sprinkler 5 into the catchment basin 3. The air heated through the heat exchange passing through the drainage gratings 4, it is collected in the confuser 6 and emitted by the fan 9 into the atmosphere through the diffuser 7. The cooled water collected in the catchment basin 3 is again sent to the production process.

As a result of the proposed solution, energy consumption is completely excluded, since there is no electric motor that previously rotates the fan. Instead, a hydraulic actuator is installed in the form of a Segner wheel, consisting of two parallel rows of crosswise arranged pipes, using the energy of the cooled water.

In addition, capital costs during construction are reduced, since the need for laying a power supply cable to the electric motor is eliminated.

Claims (3)

1. The cooling tower, comprising a housing with open at the bottom air-intake openings and a catchment basin, an axial fan located in the junction of the confuser and diffuser, water distribution devices, characterized in that it contains a hydraulic drive connected to the axial fan, while the axis of rotation of the hydraulic drive is aligned in space with the axis of rotation of the axial fan, the shaft of the axial fan is connected through a centrifugal clutch to the hydraulic drive shaft, on which the hollow shaft is fixedly mounted, which is inserted into the shaft The hydraulic drive, which is connected to the distribution manifold pipe and is the plain bearing housing, is made in the form of a Segner wheel, consisting of two parallel rows of cross-shaped pipes, on the periphery of which are water distribution devices, which are slotted nozzles. 2. The cooling tower according to claim 1, characterized in that the axial fan is mounted in a support fixed to the beam ceiling. 3. The cooling tower according to claim 1, characterized in that the support of the hydraulic actuator is fixed to the support of the axial fan.

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