Cooling tower fan regulation and control device

Abstract

The utility model relates to the technical field of cooling tower control, and discloses a cooling tower fan regulation and control device which is characterized in that a water-permeable filler layer is fixedly arranged in a shell, a cooling water pipeline is arranged above the water-permeable filler layer, a cooling water nozzle is communicated with the cooling water pipeline, an upper side temperature sensor is arranged above the water-permeable filler layer, and a lower side temperature sensor is arranged above the water-permeable filler layer. And a lower side temperature sensor is arranged below the permeable filler layer. The cooling water pipeline conveys circulating cooling water absorbing heat to the position above the water-permeable filler and sprays the circulating cooling water to the surface of the water-permeable filler layer through the cooling water spray head communicated with the cooling water pipeline, the water-permeable filler layer dissipates heat of the circulating cooling water, and the draught fan enables airflow to enter from the air inlet, penetrate through the water-permeable filler layer and finally be discharged from the top of the cooling tower. The upper side temperature sensor monitors the temperature of the upper portion of the water-permeable filler layer, the lower side temperature sensor monitors the temperature of the middle of the bottom of the water-permeable filler layer, and the implemented temperature drop is fed back to the control system, so that the cooling tower fan is regulated and controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cooling tower control technical field, concretely relates to a cooling tower fan regulation and control device. BACKGROUND

[0002] Cooling tower is a kind of equipment designed to reduce fluid temperature.It is widely used in industrial field, especially in power plant, oil refinery, chemical plant and other places with huge cooling demand.The basic structure of cooling tower includes pool, water-permeable filler, fan, cooling tower shell and cooling water pipeline and multiple components.Its working principle is based on expanding the contact area of water and air to achieve cooling effect.In the working process of cooling tower, water is first pumped to pool, and then flows into cooling tower shell through cooling water pipeline.In the shell, water will pass through water-permeable filler, and the filler is used to increase the contact area of water and air, so as to accelerate heat transfer.

[0003] In the operation process of cooling tower, in order to ensure its efficient operation, necessary temperature monitoring must be carried out on cooling tower.This not only involves real-time monitoring of the temperature of cooling water, but also includes consideration of ambient temperature, and adjustment of wind speed and flow rate inside cooling tower.Through comprehensive analysis of these data, timely adjustment of the working state of cooling tower, optimization of cooling efficiency and ensuring that heat exchange reaches the best effect. CONTENT OF THE UTILITY MODEL

[0004] The utility model intends to provide cooling tower fan regulation and control device, timely adjustment when with the change of working condition to save the energy consumption when using cooling tower.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme: cooling tower fan regulation and control device, including fan and shell, the fan is located at the top of shell, the shell is equipped with air inlet, the shell is fixed above pool, the water-permeable filler layer is fixed in the shell, the cooling water pipeline is equipped above the water-permeable filler layer, the cooling water spray head is connected on the cooling water pipeline, the upper side temperature sensor is equipped above the water-permeable filler layer, the lower side temperature sensor is equipped below the water-permeable filler layer.

[0006] The cooling tower fan control device of the present invention includes an upper temperature sensor and a lower temperature sensor, which can monitor the temperature changes inside the cooling tower in real time. The temperature sensor is connected to the control unit, and the control unit automatically adjusts the speed of the fan according to the data provided by the temperature sensor. When it is detected that the temperature exceeds the preset upper limit, the control unit will instruct the fan to accelerate to enhance the cooling effect; conversely, when the temperature is lower than the lower limit, the control unit will reduce the speed of the fan to reduce energy consumption. In addition, the control device also has a fault self-detection function. Once an abnormality is detected in the fan or sensor, an alarm will be issued immediately, and the fault information will be recorded through the control unit to facilitate timely maintenance by maintenance personnel. Through these designs, the cooling tower fan control device of the present invention can effectively improve the operating efficiency and safety of the cooling tower.

[0007] In actual use, the cooling water pipeline transports the circulating cooling water, which has absorbed heat, to the top of the permeable packing. The cooling water nozzle connected to the pipeline sprays the circulating cooling water onto the surface of the permeable packing layer, which dissipates the heat from the circulating cooling water. Simultaneously, the fan is turned on, allowing air to enter through the air inlet, pass through the permeable packing layer, dissipating the heat from the circulating cooling water, and finally be discharged from the top of the cooling tower. The upper temperature sensor monitors the temperature of the upper part of the permeable packing layer, while the lower temperature sensor monitors the temperature of the middle part of the bottom of the permeable packing layer. The temperature drop is fed back to the control system, which regulates the cooling tower fan and achieves energy conservation.

[0008] Preferably, as an improvement, the cooling water nozzle is an adjustable cooling water nozzle, comprising a rotary ball valve for adjusting the cooling water flow rate.

[0009] Preferably, as an improvement, the water-permeable filler layer includes a mesh support frame, and the water-permeable filler module is placed on the support frame.

[0010] Preferably, as an improvement, two layers of permeable filler modules, upper and lower, are placed inside the mesh support frame, and the pores of the upper layer of permeable filler modules are smaller than the pores of the lower layer of permeable filler modules.

[0011] Preferably, as an improvement, a filler temperature sensor is provided between the upper water permeable filler module and the lower water permeable filler module.

[0012] Preferably, as an improvement, the edges of the permeable packing modules are formed into a corrugated channel structure, with the corrugated channels of two adjacent permeable packing modules joined together. This structure provides a strict flow diversion effect, allowing the falling film water to spread along the packing surface, reducing the direct free fall of water in the air duct, thereby improving the stability of the liquid film flow.

[0013] Preferably, as an improvement, two layers of permeable filler modules, upper and lower, are placed in the mesh support frame, and the bottom of the upper layer of permeable filler module and the top of the lower layer of permeable filler module are mutually matched corrugated channels.

[0014] Preferably, as an improvement, the mesh support frame is provided with a detachable middle mesh panel, and the middle mesh panel is located between the upper permeable filler module and the lower permeable filler module.

[0015] Preferably, as an improvement, the crossbar of the support frame is a hollow tube, and the end of the crossbar extends out of the shell.

[0016] Preferably, as an improvement, the cross bar is connected to the water pool at the bottom of the shell through a pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The reference numerals in the drawings of the specification include a control panel 1 , a fan 2 , a water collector 3 , a cooling water pipeline 4 , an upper temperature sensor 5 , a water-permeable packing layer 6 , and a lower temperature sensor 7 .

[0020] The embodiment is basically as shown in the attached Figure 1 As shown: A cooling tower fan control device includes a fan 2 and a shell. The fan 2 is located at the top of the shell. The shell is provided with an air inlet. The shell is fixed above the water pool. A permeable packing layer 6 is fixedly provided in the shell. A cooling water pipeline 4 is provided above the permeable packing layer 6. The cooling water pipeline 4 is connected to a cooling water nozzle. An upper temperature sensor 5 is provided above the permeable packing layer, and a lower temperature sensor 7 is provided below the permeable packing layer 6.

[0021] The cooling water pipeline 4 delivers the heat-absorbed circulating cooling water to the top of the water-permeable filler 6, and then sprays the circulating cooling water on the upper surface of the water-permeable filler layer 6 from the cooling water spray head. The circulating cooling water enters the water-permeable filler layer 6, and the water-permeable filler layer 6 dissipates heat from the circulating cooling water. At the same time, the fan 2 is turned on, and the fan 2 makes the air flow into the inlet, then passes through the water-permeable filler layer 6 to dissipate heat from the circulating cooling water, and finally is discharged from the top of the cooling tower. At the same time, the upper temperature sensor 5 is located in the upper middle part of the water-permeable filler layer 6, and monitors the middle temperature at the top of the water-permeable filler layer 6. The preset time interval (1 min in this embodiment) is simultaneously monitored and the data is entered into the cooling tower fan intelligent control system for regulation and control. The upper temperature sensor 5 and the lower temperature sensor 7 monitor multiple temperatures in real time, so as to determine whether the air volume is too large or too small at the moment, and to regulate and control the fan in real time.

[0022] The sensor monitors the working state of the cooling water spray head and the surrounding environmental parameters (such as flow, temperature, etc.). The cooling water spray head is an adjustable cooling water spray head, including a rotating ball valve for adjusting the cooling water flow. The controller receives the feedback signal of the sensor, and analyzes and decides according to the preset control strategy. The controller issues instructions to the electromagnetic valve or electric valve and other execution mechanisms to adjust the spraying parameters (such as flow, spraying angle, etc.) of the cooling water spray head. The cooling water spray head adjusts the spraying mode according to the instructions of the controller to achieve the best cooling effect.

[0023] The water-permeable filler layer 6 includes a net-shaped support frame on which the water-permeable filler modules are placed. The net-shaped support frame has two layers of water-permeable filler modules placed inside, and the upper layer of water-permeable filler modules has smaller voids than the lower layer of water-permeable filler modules. The filler temperature sensor is arranged between the upper layer of water-permeable filler modules and the lower layer of water-permeable filler modules.

[0024] The support frame serves as the backbone of the entire permeable filler layer, playing a key supporting role. The mesh structure allows water to flow smoothly while maintaining sufficient strength to support the permeable filler modules above. This design also helps maintain the stability of the entire permeable filler layer, preventing deformation caused by water flow impact or external pressure. The permeable filler modules are the actual part that filters and allows water to pass through. The modules are divided into upper and lower layers, and the upper layer of permeable filler modules has smaller pores than the lower layer. This layered design helps achieve different levels of filtering effect, with the upper layer blocking larger impurities and the lower layer allowing smaller particles to pass through while keeping the water flow smooth. The upper layer of permeable filler modules has smaller pores and mainly serves as a fine filter, blocking larger suspended solids and impurities. The lower layer of permeable filler modules has larger pores, allowing more water flow while filtering out smaller particles to ensure clean water quality. This design of pore difference improves the filtering efficiency and water permeability of the entire permeable filler layer. The filler temperature sensor placed between the upper and lower layers of permeable filler modules is used to monitor the temperature of the filler layer in real time. Temperature is an important factor affecting the performance and lifespan of the permeable filler layer. Excessive temperature can cause the filler to age, deform or fail, while too low a temperature can affect the permeability and filtering efficiency of the filler. By monitoring the temperature in real time, the water flow speed, filler type or other measures can be adjusted in time to maintain the optimal working state of the permeable filler layer and prolong its service life.

[0025] The edges of the water-permeable filler modules are corrugated channel structures, and the corrugated channels of adjacent two water-permeable filler modules are spliced with each other. This structure can play a strict guiding role, making the falling film water flow along the surface of the filler, reducing the direct free falling of water in the air duct, and thus improving the stability of liquid film flow. The design of the corrugated channel structure enables the edges of the adjacent two water-permeable filler modules to be closely spliced with each other. This splicing method not only enhances the structural stability of the entire filler layer, but also forms a continuous flow guide channel. When the falling film water flows through the water-permeable filler layer, the corrugated channel can guide the water flow to flow orderly along the surface of the filler, avoiding the splashing and turbulence caused by the direct free falling of water in the air duct. Through the flow guide of the corrugated channel, the falling film water can be more evenly distributed on the surface of the filler, forming a stable liquid film. This layer of liquid film flows slowly under the action of gravity, which helps to increase the contact time and contact area between water and filler, thereby enhancing the filtering effect. The stable liquid film flow also reduces the noise caused by water flow impact and splashing, improving the quiet performance of the entire system. The corrugated channel structure also helps to optimize the design of the air duct. By reasonably arranging the direction of the water-permeable filler modules and the corrugated channels, the airflow can be guided to flow orderly in the air duct, reducing airflow resistance and vortex phenomena. In addition, the corrugated channel structure makes it easier for the filler surface to form a continuous liquid film, which helps to flush away dirt and impurities on the surface of the filler, enhancing the self-cleaning ability of the filler. Stable liquid film flow can also reduce the problem of blockage and performance degradation caused by dirt accumulation, improving the reliability and stability of the entire system.

[0026] The net-shaped support frame is placed with two layers of water-permeable filler modules, and the bottom of the upper layer of water-permeable filler modules and the top of the lower layer of water-permeable filler modules are corrugated channels that match each other. Or a detachable middle layer of net plate is arranged in the net-shaped support frame, and the middle layer of net plate is located between the upper layer of water-permeable filler modules and the lower layer of water-permeable filler modules.

[0027] The crossbar of the support frame is a hollow pipe, and the end of the crossbar extends out of the shell. The crossbar is connected with the water pool at the bottom of the shell through a pipeline. The crossbar of the hollow pipe reduces the weight compared to a solid rod, which helps to reduce the weight of the entire support frame, reduces the requirements for the installation foundation, and is convenient for transportation and installation. After the crossbar extends out of the shell, it can be more conveniently connected with other components (such as pipelines, valves, etc.), improving the flexibility and convenience of installation. After the crossbar is connected with the water pool at the bottom of the shell through a pipeline, a water circulation system can be formed. For example, in water treatment or cooling tower applications, this helps to realize water reuse and save water resources. At the same time, since the crossbar is hollow, additional equipment such as sensors can be installed therein to meet more complex monitoring and control requirements.

[0028] The utility model relates to cooling tower fan control device, contain upside and downside temperature sensor, these sensors can carry out real time monitoring to the temperature change in cooling tower inside. Temperature sensor is connected with control unit, and control unit is adjusted the rotational speed of fan according to the data provided by temperature sensor. When temperature exceeds the upper threshold value of prearrangement, control unit will instruct fan to accelerate operation to strengthen cooling effect, on the contrary, when temperature is lower than the lower threshold value, control unit will reduce the rotational speed of fan to save energy. In addition, the control device also has the function of fault self -checking, once monitoring that fan or sensor appears unusual, will immediately send out the alarm, and through control unit records fault information, and the maintenance personnel of being convenient for promptly overhauls. Through these designs, the cooling tower fan control device of the utility model can effectively improve the operation efficiency and safety of cooling tower.

[0029] In practical application, the cooling water pipeline transports the circulating cooling water after absorbing heat to the above of the water-permeable filler, and sprays the circulating cooling water on the surface of the water-permeable filler layer through the cooling water spray head communicated with the water-permeable filler. The water-permeable filler layer radiates heat to the circulating cooling water, and the fan is started, the fan makes the airflow enter from the air inlet, then passes through the water-permeable filler layer to radiate heat to the circulating cooling water, and finally is discharged from the top of the cooling tower. The upside temperature sensor monitors the temperature of the upper part of the water-permeable filler layer, and the downside temperature sensor monitors the middle temperature of the bottom of the water-permeable filler layer. According to the temperature drop feedback, the control system is fed back to the cooling tower fan to realize real-time control, so as to achieve the purpose of energy saving.

[0030] The above is only the embodiment of the utility model, and the specific technical scheme and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical scheme of the utility model, a number of modifications and improvements can be made, in the utility model, unless otherwise specified and limited, the terms "installation", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A cooling tower fan regulating device, comprising a fan and a shell, the fan is located at the top of the shell, and an air inlet is arranged on the shell, characterized in that, The shell is fixed above the water tank, a water-permeable filler layer is fixedly arranged in the shell, a cooling water pipeline is arranged above the water-permeable filler layer, a cooling water spray head is communicated on the cooling water pipeline, an upper temperature sensor is arranged above the water-permeable filler layer, and a lower temperature sensor is arranged below the water-permeable filler layer.

2. The cooling tower fan regulation device of claim 1, wherein: The cooling water spray head is an adjustable cooling water spray head, which comprises a rotary ball valve for adjusting the flow of cooling water.

3. The cooling tower fan regulation device of claim 1, wherein: The water-permeable filler layer comprises a net-shaped support frame, and water-permeable filler modules are placed on the support frame.

4. The cooling tower fan regulation device of claim 3, wherein: The water-permeable filler modules are placed in two layers in the net-shaped support frame, and the upper layer and the lower layer are respectively an upper water-permeable filler module and a lower water-permeable filler module, and the aperture of the upper water-permeable filler module is smaller than the aperture of the lower water-permeable filler module.

5. The cooling tower fan regulation device of claim 4, wherein: A filler temperature sensor is arranged between the upper water-permeable filler module and the lower water-permeable filler module.

6. The cooling tower fan regulation device of claim 3, wherein: The edges of the water-permeable filler modules are corrugated groove structures, and the corrugated grooves of adjacent two water-permeable filler modules are spliced with each other.

7. The cooling tower fan regulation device of claim 3, wherein: The water-permeable filler modules are placed in two layers in the net-shaped support frame, and the upper layer and the lower layer are respectively an upper water-permeable filler module and a lower water-permeable filler module, and the bottom of the upper water-permeable filler module and the top of the lower water-permeable filler module are corrugated grooves matched with each other.

8. The cooling tower fan regulation device of claim 3, wherein: The net-shaped support frame is provided with a detachable middle layer net plate, and the middle layer net plate is located between the upper water-permeable filler module and the lower water-permeable filler module.

9. The cooling tower fan regulation device of claim 3, wherein: The cross bars of the support frame are hollow pipes, and the end portions of the cross bars extend out of the shell.

10. The cooling tower fan regulation device of claim 9, wherein: The cross bars are communicated with the water tank at the bottom of the shell through pipelines.

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