CN214371838U

CN214371838U - Energy-saving device of cooling tower

Info

Publication number: CN214371838U
Application number: CN202023273888.6U
Authority: CN
Inventors: 崔青青
Original assignee: Shanghai Yao Yao Industrial Technology Service Co ltd
Current assignee: Shanghai Yao Yao Industrial Technology Service Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-08
Anticipated expiration: 2030-12-30

Abstract

A cooling tower economizer installs in the cooling tower top, and it includes: the water turbine is arranged on one side of the top surface of the cooling tower, a main shaft of the water turbine, which is connected with the rotating wheel, is connected with a transmission shaft, and the transmission shaft is connected with a cooling fan arranged on the top of the cooling tower; the outlet end of a draft tube on the water turbine is connected with the inside of the cooling tower; the outlet end of the speed-increasing pipe is connected with the water diversion end of the water turbine through a flange, a spiral impeller is arranged in the speed-increasing pipe, and the inlet end of the speed-increasing pipe is connected with a cooling water pipeline through a flange; an exhaust valve is arranged in the cooling water pipeline close to the inlet end of the speed-raising pipe; a communicating pipe with a pressure release valve and communicated with the cooling tower is arranged in the middle of the cooling water pipeline; the lower part of the cooling water pipeline is provided with a discharge pipe with a safety valve, and the outlet of the discharge pipe corresponds to the cold water pool; the inlet end of the cooling water pipeline is provided with a main valve. The utility model discloses a hydraulic turbine technique converts the surplus energy among the circulating water system into mechanical energy, and the fan acting of redriving is to hot water cooling to can effectively utilize surplus energy, realize energy saving and consumption reduction's purpose.

Description

Energy-saving device of cooling tower

Technical Field

The utility model relates to a cooling tower technical field, in particular to cooling tower economizer.

Background

Various equipment with circulating water return drive fan has appeared in the cooling tower trade now, and the ubiquitous availability factor is low, uses and maintains inconveniently, drawbacks such as installation cycle length, and the water turbine for circulating water cooling tower overhauls in the past, maintains difficultly, and the installation cycle length, the conversion efficiency of system energy is low, makes the cooling tower energy-saving transformation effect unsatisfactory.

Disclosure of Invention

An object of the utility model is to design a cooling tower economizer, adopt the hydraulic turbine technique, convert the surplus energy among the circulating water system into mechanical energy, the fan acting of redriving is to hot water cooling to can effectively utilize surplus energy, realize energy saving and consumption reduction's purpose.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a cooling tower economizer installs in the cooling tower top, and it includes: the water turbine is arranged on one side of the top surface of the cooling tower, a main shaft of the water turbine, which is connected with the rotating wheel, is connected with a transmission shaft, and the transmission shaft is connected with a cooling fan arranged on the top of the cooling tower; the outlet end of a draft tube on the water turbine is connected with the inside of the cooling tower; the outlet end of the speed-increasing pipe is connected with the water diversion end of the water turbine through a flange, a spiral impeller is arranged in the speed-increasing pipe, and the inlet end of the speed-increasing pipe is connected with a cooling water pipeline through a flange; an exhaust valve is arranged in the cooling water pipeline close to the inlet end of the speed-raising pipe; a communicating pipe with a pressure release valve and communicated with the cooling tower is arranged in the middle of the cooling water pipeline; the lower part of the cooling water pipeline is provided with a discharge pipe with a safety valve, and the outlet of the discharge pipe corresponds to the cold water pool; the inlet end of the cooling water pipeline is provided with a main valve.

Preferably, the inlet end of the accelerating tube is connected with the cooling water pipeline through a flexible joint.

Preferably, the diameter of the inlet end of the accelerating tube is larger than that of the outlet end of the accelerating tube and is gradually reduced; correspondingly, the outer diameter of the spiral impeller is gradually reduced from the inlet end to the outlet end of the accelerating tube.

The cooling tower is arranged above the cold water pool, the top of the cooling tower is provided with a fan, the mounting position of the water turbine is arranged at the position of a motor of the traditional cooling tower, the fan is connected with the water turbine through a transmission shaft, and the rotating torque of the water turbine is transmitted to enable the fan to rotate to take away the heat of the cooling tower.

A main valve is arranged on a communicating pipe beside the cooling tower, a spiral accelerating pipe and a flexible joint are further arranged between the main valve and the water turbine, the spiral accelerating pipe is composed of a small-end flange, a reducing pipe, a central shaft, a spiral blade, a large-end flange and the like, and the components are connected together to form a whole in a welding mode. The large-end flange is connected to the flexible joint, the small-end flange is connected to the water turbines, and the models of the small-end flanges are designed with the water turbines in a matched mode according to different models of each water turbine. The effect of spiral accelerating tube is that rivers advance according to the direction of rotation that the hydraulic turbine needs in advance to carry out the spiral before the intercommunication intraductal entering hydraulic turbine, can make rivers get into the hydraulic turbine like this and improve the velocity of flow, is favorable to the hydraulic turbine to the conversion of energy, and flexible joint's effect reduces the impact between communicating pipe and the hydraulic turbine, makes the hydraulic turbine operation more steady, and the vibration is littleer.

The top end of the cooling water pipeline is provided with an exhaust valve, when a certain amount of gas is collected in water flow due to temperature change or the gas is carried in the pipeline when the water turbine is started, the gas formed in the water flow can be automatically and timely discharged by the exhaust valve, the pressure of the water flow is prevented from fluctuating due to the compressibility of the gas, and therefore the rotating speed of the water turbine is prevented from being unstable.

A pressure release valve is arranged between the communicating pipe and the cooling tower, the opening degree of the pressure release valve can be adjusted to control the rotating speed of the water turbine and control the start and stop of the water turbine so as to overhaul the water turbine.

Be equipped with the relief valve between drain pipe and the cold water pond, the relief valve can be opened according to the pressure automation of rivers in communicating pipe, when the hydraulic turbine breaks down and the relief valve fails under the condition of in time opening, surpasss the relief valve and predetermine automatic relief valve of opening behind the pressure, with the rivers direct leading to in the cold water pond in communicating pipe to the installation of guarantee system.

The hydraulic turbine is installed on traditional cooling tower motor base for replace the motor drive fan, through communicating pipe on the water pipe that gets into the cooling tower, pass through flexible joint, spiral acceleration pipe with the rivers that traditional form got into the cooling tower, the hydraulic turbine is introduced to the horizontal axial, and the drive hydraulic turbine acting is in introducing the cooling tower with rivers again, and the inside water distribution effect of cooling tower is the same with traditional cooling tower. The hydraulic turbine is installed in the motor department of traditional cooling tower, and the hydraulic turbine passes through the transmission shaft and directly is connected with the fan of traditional cooling tower, and the rotation through the fan makes cooling tower discharge steam to rivers cooling.

The utility model cancels the motor of the traditional cooling tower, thereby achieving the effect of saving electric energy; simultaneously still be equipped with discharge valve and relief valve on communicating pipe, can collect certain quantity gas in rivers because of the change of temperature, perhaps carrying gas in the pipeline when the start, gaseous compressibility can make the pressure of rivers produce undulantly to cause the hydraulic turbine rotational speed unstable, the discharge valve effect that sets up at communicating pipe top is the gas that forms in the automatic timely discharge rivers, thereby eliminates hydraulic fluctuation, makes the hydraulic turbine even running. The effect of relief valve is when the hydraulic turbine breaks down, and under the condition that the relief valve failed to open in time again, for the guarantee hydraulic turbine can in time shut down and open the relief valve according to the pressure of rivers in the communicating pipe automatically, guarantee system safety.

The utility model has the advantages that:

the utility model discloses a hydraulic turbine technique converts the surplus energy among the circulating water system into mechanical energy, and the fan doing work of redriving is to hot water cooling to can effectively utilize surplus energy, realize energy saving and consumption reduction's purpose, the system process flow before the circulating water got into the cooling tower can not change, only will advance the tower water piping connection to the hydraulic turbine, to the hydraulic turbine do work after again advance in the tower, be connected with water distribution system and make the cooling tower normal operating.

The utility model discloses simple structure, it is convenient to maintain, and conversion efficiency is high, and before the spiral accelerating tube made rivers get into the hydraulic turbine in communicating pipe, rotatory flow was carried out according to the inside rivers direction of the hydraulic turbine in advance, and the rivers of avoiding traditional form openly strike the hydraulic turbine and consumed some kinetic energy, and the kinetic energy make full use of that will avoid consuming is to the hydraulic turbine rotation on doing work. The pressure release valve can be adjusted according to different working conditions of the cooling tower, so that the energy recovery of the whole set of system reaches the highest efficiency, and the cooling efficiency of the cooling tower is fully guaranteed.

The utility model can not change the structure form and the installation frame of the traditional cooling tower basically, and can meet the interchangeability requirement of the cooling tower parts and is convenient to install and maintain; meanwhile, the exhaust valve and the safety valve are arranged in the system, so that the water turbine can stably operate and the safety of the system is guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of the speed increasing tube in the embodiment of the present invention.

Detailed Description

Referring to fig. 1 and 2, the energy saving device of the cooling tower of the present invention is installed on the top of the cooling tower 100, and comprises:

the water turbine 1 is arranged on one side of the top surface of the cooling tower 100, a main shaft connected with the rotating wheel is connected with a transmission shaft 2, and the transmission shaft 2 is connected with a cooling fan 200 arranged on the top of the cooling tower 100; the outlet end of a draft tube on the water turbine 1 is connected with the inside of the cooling tower 100;

the outlet end of the accelerating tube 3 is connected with the water diversion end of the water turbine 1 through a flange, a spiral impeller 31 is arranged in the accelerating tube 3, and the inlet end of the accelerating tube 3 is connected with the cooling water pipeline 4 through a flange; an exhaust valve 5 is arranged in the cooling water pipeline 4 close to the inlet end of the speed-increasing pipe 3; a communicating pipe 7 with a pressure release valve 6 communicated with the cooling tower 100 is arranged in the middle of the cooling water pipeline 4; a discharge pipe 9 with a safety valve 8 is arranged at the lower part of the cooling water pipeline 4, and the outlet of the discharge pipe 9 corresponds to the cold water pool 300; the inlet end of the cooling water pipeline 4 is provided with a main valve 10.

Preferably, the inlet end of the accelerating tube 3 is connected with the cooling water pipeline 4 through a flexible joint 11.

The utility model discloses an adopt hydraulic turbine drive fan to give the economizer system of circulating water cooling, utilize circulating water system's surplus energy, replace the circulating water system with motor drive fan in the former technology.

Claims

1. The utility model provides a cooling tower economizer installs in the cooling tower top, its characterized in that includes:

the cooling tower, the fan, the transmission shaft, the water turbine, the spiral accelerating tube, the flexible joint, the exhaust valve, the relief valve, the communicating tube, the cold water tank, the safety valve and the main valve;

the water turbine is arranged on one side of the top surface of the cooling tower, a main shaft of the water turbine, which is connected with the rotating wheel, is connected with a transmission shaft, and the transmission shaft is connected with a cooling fan arranged on the top of the cooling tower; the outlet end of a draft tube on the water turbine is connected with the inside of the cooling tower;

the outlet end of the speed-increasing pipe is connected with the water diversion end of the water turbine through a flange, a spiral impeller is arranged in the speed-increasing pipe, and the inlet end of the speed-increasing pipe is connected with a cooling water pipeline through a flange; an exhaust valve is arranged in the cooling water pipeline close to the inlet end of the speed-raising pipe; a communicating pipe with a pressure release valve and communicated with the cooling tower is arranged in the middle of the cooling water pipeline; the lower part of the cooling water pipeline is provided with a discharge pipe with a safety valve, and the outlet of the discharge pipe corresponds to the cold water pool; the inlet end of the cooling water pipeline is provided with a main valve.

2. The cooling tower economizer of claim 1 wherein the booster inlet end is connected to the cooling water line by a flexible joint.

3. The cooling tower energy saving device of claim 1 or 2, wherein the inlet end diameter of the accelerating tube is larger than the outlet end diameter and is gradually reduced; correspondingly, the outer diameter of the spiral impeller is gradually reduced from the inlet end to the outlet end of the accelerating tube.