Automatic monitoring blowdown device for cooling tower

Abstract

The utility model discloses an automatic monitoring blowdown device for a cooling tower, and relates to the field of cooling devices. The device comprises a control box, an electric two-way valve installed on a blow-off pipe of the cooling tower and a water quality detection sensor installed in a cooling water outlet pipe of the cooling tower, a main circuit is installed in the control box, the electric two-way valve and the water quality detection sensor are installed in the main circuit in parallel, and a rotary switch is installed on the surface of the control box. A manual pollution discharge line and an automatic pollution discharge monitoring line are arranged in the rotary switch, and the manual pollution discharge line and the automatic pollution discharge monitoring line are mounted in the main circuit in parallel. A traditional manual blow-down valve is replaced by the electric two-way valve, the control box is arranged, and the high-precision hardness detector, the high-sensitivity turbidity detector and the accurate and reliable conductivity detector are integrated in the control box, so that more accurate and comprehensive monitoring and analysis on the quality of the discharged water of the cooling tower are realized, and the quality of the discharged water is improved. And the device is matched with an electric two-way valve to accurately discharge sewage.

Description

Technical Field

[0001] This utility model belongs to the field of cooling devices, and more specifically, it relates to an automatic monitoring and sewage discharge device for cooling towers. Background Technology

[0002] Cooling towers play a crucial role in industrial production. They use water as a circulating cooling medium and rely on the heat exchange that occurs when water comes into contact with air. Whether open or closed, cooling towers absorb and release the heat generated during system operation into the atmosphere through different heat transfer pathways, thereby lowering the water temperature. They are indispensable evaporative cooling devices for ensuring the normal operation of the system and are also a type of water-saving and energy-efficient recycling device.

[0003] However, the sewage discharge technology of commonly used cooling towers on the market is relatively outdated. It mainly relies on manual observation of the turbidity of the cooling water and manual opening of the drain valve based on subjective judgment. Considering that cooling towers are mostly installed in special locations such as rooftops, this manual sewage discharge method is prone to situations where no one observes or discharges the sewage for extended periods during long-term operation, leading to the following potential hazards:

[0004] As water evaporates, the concentration of calcium and magnesium ions in the water increases, resulting in a large amount of dirt buildup. This dirt not only adheres to the cooling tower packing (or the coils in a closed tower) but also to the channels through which the system flows, reducing the system's heat exchange efficiency.

[0005] Dust in the air is adsorbed or deposited into the cooling tower, and sludge will adhere to the inside of the cooling tower, pipes, water pumps and heat exchange equipment as the system operates, reducing the heat exchange efficiency of the equipment.

[0006] Under-deposit corrosion, electrochemical corrosion by C and Fe ions, occurs in the corrosion of pipes and metal components through which water flows, reducing the overall service life of the system.

[0007] Cooling towers are located in well-ventilated areas with plenty of sunlight, where temperatures are suitable for the growth of bacteria and algae. Legionella and other microorganisms not only bring a large number of microbial hazards, but the slime, scale, and rust that grows form complex scale, making water treatment more difficult and costly, yet the scale / rust problem remains unresolved.

[0008] The aforementioned hazards will not only significantly reduce the cooling efficiency of the cooling tower, but also cause a large amount of dirt to adhere to the equipment, pipe walls and cooling tower packing surface, reducing the heat exchange efficiency of the equipment and system, increasing energy consumption, increasing management costs, reducing the lifespan of the equipment system and other negative impacts on production efficiency, and even causing serious problems such as equipment damage, frequent failures or even production stoppage. Utility Model Content

[0009] In view of the problems in the related technologies, this utility model proposes an automatic monitoring and sewage discharge device for cooling towers to overcome the above-mentioned technical problems existing in the existing related technologies.

[0010] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0011] This utility model relates to an automatic monitoring and sewage discharge device for cooling towers, comprising a control box, an electric two-way valve installed on the sewage discharge pipe of the cooling tower, and a water quality detection sensor installed in the cooling water outlet pipe of the cooling tower. The control box contains a main circuit, and the electric two-way valve and the water quality detection sensor are installed in parallel within the main circuit. A rotary switch is installed on the surface of the control box, and the rotary switch contains a manual sewage discharge line and an automatic monitoring sewage discharge line, which are installed in parallel within the main circuit.

[0012] Furthermore, the water quality detection sensor includes a hardness detector, a turbidity detector, and a conductivity detector, and the hardness detector, turbidity detector, and conductivity detector are connected in parallel in the main circuit.

[0013] Furthermore, a circuit breaker connected in series with the main circuit is installed inside the control box.

[0014] Furthermore, a fuse connected in series with the main circuit is installed inside the control box.

[0015] Furthermore, intermediate relays are installed at both ends of the electric two-way valve.

[0016] Furthermore, an intermediate relay is connected in series on both the manual sewage discharge line and the automatic monitoring sewage discharge line of the rotary switch.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this utility model, the traditional manual drain valve is replaced with an electric two-way valve. Through this improvement, the drain operation is transformed from manual to electric, which facilitates automated drain operation.

[0019] 2. This utility model includes a sewage discharge control box, which integrates a high-precision hardness detector, a high-sensitivity turbidity detector, and a precise and reliable conductivity detector. This enables more accurate and comprehensive monitoring and analysis of the sewage quality discharged from the cooling tower. In conjunction with an electric two-way valve, it ensures precise sewage discharge, further improving the overall operating efficiency and stability of the cooling tower. This effectively reduces the risk of cooling efficiency decline and equipment damage caused by water quality issues, ensuring the reliable operation and long-term stable operation of the entire system.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, the drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the connection structure between the sewage discharge device and the cooling tower of this utility model;

[0023] Figure 2 This is a schematic diagram of the automatic sewage discharge control principle of the sewage discharge device of this utility model. Detailed Implementation

[0024] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0025] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0026] Please see Figure 1 , Figure 2 As shown, this utility model is an automatic monitoring and sewage discharge device for cooling towers, including a control box, an electric two-way valve M installed on the sewage discharge pipe of the cooling tower, and a water quality detection sensor installed in the cooling water outlet pipe of the cooling tower. The control box is equipped with a main circuit, and the electric two-way valve M and the water quality detection sensor are installed in parallel in the main circuit. A rotary switch 1SA1 is installed on the surface of the control box. The rotary switch 1SA1 is equipped with a manual sewage discharge line and an automatic monitoring sewage discharge line. The manual sewage discharge line and the automatic monitoring sewage discharge line are installed in parallel in the main circuit.

[0027] When the rotary switch 1SA1 is adjusted to the manual sewage discharge line, the electric two-way valve M is energized and opened to discharge sewage from the cooling tower. When the rotary switch 1SA1 is adjusted to the automatic monitoring sewage discharge line, the water quality detection sensor monitors the water quality in the cooling water outlet pipe of the cooling tower in real time. When the water quality is detected to be polluted and does not meet the water demand, the controller in the control box controls the electric two-way valve M to be energized and opened to discharge sewage from the cooling tower.

[0028] Specifically, the water quality testing sensors include a hardness meter YD, a turbidity meter ZD, and a conductivity meter DD, and the hardness meter YD, turbidity meter ZD, and conductivity meter DD are connected in parallel in the main circuit;

[0029] Among them, the hardness detector YD uses a spectral analysis detector, which can accurately detect the changes in the concentration of trace amounts of calcium and magnesium ions in the water, thereby detecting the water hardness. The turbidity detector ZD uses a laser scattering detector, which can effectively eliminate the interference of factors such as bubbles and color in the water on the turbidity measurement, improving the accuracy and stability of the measurement. The conductivity detector DD uses a high-precision four-electrode measuring instrument, which can accurately measure the conductivity of water over a wide temperature range and can reflect the changes in the electrolyte content in the water in a timely manner. The three detectors are connected in parallel in the circuit. When any detector detects that the water quality is unqualified, the controller in the control box controls the electric two-way valve M to open and discharge sewage from the cooling tower.

[0030] Specifically, the control box is equipped with a circuit breaker QF connected in series with the main circuit. The circuit breaker QF protects against overload and short circuit, ensuring the safe and stable operation of the entire circuit system.

[0031] Specifically, the control box is equipped with a fuse FU connected in series with the main circuit. The fuse FU plays a protective role in the circuit. When an abnormally large current occurs in the circuit, it can melt in time, cut off the circuit, and prevent damage to other components due to excessive current.

[0032] Specifically, intermediate relays KA1 and KA2 are installed at both ends of the electric two-way valve M. Intermediate relay KA1 is connected in series on the manual sewage discharge line of rotary switch 1SA1, and intermediate relay KA2 is connected in series on the automatic monitoring sewage discharge line of rotary switch 1SA1. Intermediate relays KA1 and KA2 play the role of signal transmission and amplification in the circuit, which can enhance the stability and driving capability of the control signal and ensure the reliable operation of each control link.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize the utility model.

Claims

1. An automatic monitoring and sewage discharge device for cooling towers, comprising a control box, an electrically operated two-way valve (M) installed on the sewage discharge pipe of the cooling tower, and a water quality detection sensor installed in the cooling water outlet pipe of the cooling tower, characterized in that: The control box contains a main circuit. The electric two-way valve (M) and the water quality sensor are installed in parallel within the main circuit. A rotary switch (1SA1) is installed on the surface of the control box. The rotary switch (1SA1) contains a manual sewage discharge line and an automatic sewage monitoring line. The manual sewage discharge line and the automatic sewage monitoring line are installed in parallel within the main circuit.

2. The automatic monitoring and sewage discharge device for cooling towers according to claim 1, characterized in that: The water quality detection sensor includes a hardness detector (YD), a turbidity detector (ZD), and a conductivity detector (DD), and the hardness detector (YD), turbidity detector (ZD), and conductivity detector (DD) are connected in parallel in the main circuit.

3. The automatic monitoring and sewage discharge device for cooling towers according to claim 1, characterized in that: The control box contains a circuit breaker (QF) connected in series with the main circuit.

4. The automatic monitoring and sewage discharge device for cooling towers according to claim 1, characterized in that: The control box contains a fuse (FU) connected in series with the main circuit.

5. The automatic monitoring and sewage discharge device for cooling towers according to claim 1, characterized in that: The electric two-way valve (M) is equipped with an intermediate relay (KA1) and an intermediate relay (KA2) at both ends.

6. The automatic monitoring and sewage discharge device for cooling towers according to claim 1, characterized in that: An intermediate relay (KA1) is connected in series on the manual sewage discharge line of the rotary switch (1SA1), and an intermediate relay (KA2) is connected in series on the automatic monitoring sewage discharge line of the rotary switch (1SA1).

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