Air cooling tower

Abstract

The utility model relates to an air cooling tower, which is applied to the technical field of air cooling and solves the problems of large workload of manual adjustment, easiness in misoperation, unstable system operation, flooding of tower plates and liquid leakage in the prior art. Comprising a cooling tower body, an air inlet pipe, a first water supply pipe, a second water supply pipe and an air discharge pipe, and further comprises a temperature detection assembly for detecting the temperature of cooled air and a pressure detection assembly for detecting the pressure in the cooling tower body, the opening degree of the on-off control valve is adjusted according to whether the temperature value detected by the temperature detection assembly is within the target temperature range or not and whether the pressure value detected by the pressure detection assembly is within the target pressure range or not; the air temperature of the tower top can be effectively controlled, and the field automatic control level is improved.

Description

Technical Field

[0001] This invention relates to the field of air cooling technology, and in particular to an air cooling tower. Background Technology

[0002] The primary function of the air cooling tower in the air separation oxygen production process of an energy power plant is to cool the hot air from the raw material air compressor to improve the working condition of the adsorber. The working principle is that the hot air enters from the bottom and flows upwards within the tower, being cooled through direct contact with the cooling water and chilled water in the packing material before being discharged from the top. A wire mesh demister at the top removes free water from the outlet air to prevent the carryover of free moisture from the process air. The hot water at the bottom of the air cooling tower is discharged through a level control valve and returned to the circulating cooling water system (cooling tower). (Please refer to the existing published patent, entitled: "A Circulation System for an Air Cooling Tower," patent publication number "CN113932627B," application date: 2021.09.02).

[0003] The air cooled by the cooling tower is discharged from the air exhaust pipe at the top of the tower to the next process or other equipment. At this point, the temperature requirement after cooling is extremely high, and the air cooled by the cooling tower must be within a set range. However, when existing air cooling towers cool the air entering them, the amount of cooling water or chilled water entering the cooling tower is usually manually adjusted. The manual adjustment is labor-intensive and prone to operational errors, which can lead to unstable system operation and problems such as tray flooding and leakage. Utility Model Content

[0004] The purpose of this utility model is to provide an air cooling tower that solves the problems of large workload and easy operation errors in existing manual adjustment, which leads to unstable system operation and problems such as tray flooding and leakage.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides an air cooling tower, including a cooling tower body. From bottom to top, an air inlet pipe, a first water supply pipe, a second water supply pipe, and an air outlet pipe are sequentially arranged on the exterior of the cooling tower body. Both the first and second water supply pipes are equipped with on / off control valves. The tower also includes a temperature detection component for detecting the temperature of the cooled air and a pressure detection component for detecting the pressure inside the cooling tower body. The opening degree of the on / off control valves is adjusted based on whether the temperature value detected by the temperature detection component falls within a target temperature range and whether the pressure value detected by the pressure detection component falls within a target pressure range.

[0007] Furthermore, the temperature detection component includes a temperature sensor and a temperature controller. The detection end of the temperature sensor is located at the air inlet end of the air exhaust pipe, and the temperature sensor and the on / off control valve are signal-connected to the temperature controller.

[0008] Furthermore, the pressure detection assembly includes pressure sensor I, pressure sensor II, and pressure drop controller. Pressure sensor I is located at the lower part of the cooling tower and above the air inlet, and pressure sensor II is located at the upper part of the cooling tower body. Pressure sensor I, pressure sensor II, and the on / off control valve are all signal connected to the pressure drop controller.

[0009] Furthermore, the temperature controller includes a signal receiving module I, a signal output module I, and a numerical analysis module I. The signal output terminal of the temperature sensor is connected to the signal receiving module I, and the signal receiving terminal of each on / off control valve is connected to the signal output module I.

[0010] Furthermore, the pressure drop controller includes a signal receiving module II, a signal output module II, and a numerical analysis module II. The signal output terminals of the pressure sensor I and the pressure sensor II are connected to the signal receiving module of the pressure drop controller, and the signal receiving terminal of each on / off control valve is connected to the signal output terminal of the pressure drop controller.

[0011] Furthermore, both the first water supply pipe and the second water supply pipe are equipped with flow indicator controllers for detecting water flow.

[0012] Furthermore, it also includes alarm warning light I and alarm warning light II, wherein the signal receiving end of alarm warning light I is connected to the signal output module I, and the signal receiving end of alarm warning light II is connected to the signal output module II.

[0013] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0014] This utility model provides an air cooling tower, including a cooling tower body. From bottom to top, an air inlet pipe, a first water supply pipe, a second water supply pipe, and an air outlet pipe are sequentially arranged on the exterior of the cooling tower body. Both the first and second water supply pipes are equipped with on / off control valves. The tower also includes a temperature detection component for detecting the temperature of the cooled air and a pressure detection component for detecting the pressure inside the cooling tower body. The opening of the on / off control valves is adjusted based on whether the temperature value detected by the temperature detection component falls within a target temperature range and whether the pressure value detected by the pressure detection component falls within a target pressure range. By adjusting the opening of the on / off control valves based on whether the temperature value detected by the temperature detection component and the pressure value detected by the pressure detection component fall within a target temperature range and target pressure range, the air temperature at the top of the tower is effectively controlled, improving the level of on-site automation control. Furthermore, the air cooling tower can maintain a reasonable tower pressure drop, preventing flooding and leakage of the tower plates. Attached Figure Description

[0015] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure in a preferred embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the circuit connection structure in a preferred embodiment of the present invention;

[0018] Figure 3 This is a coordinate graph showing the relationship between the temperature detected by the temperature detection component and the opening degree of the control valve in a preferred embodiment of this utility model.

[0019] Figure 4 This is a coordinate graph showing the relationship between the pressure detected by the pressure detection component and the opening degree of the control valve in a preferred embodiment of this utility model.

[0020] The reference numerals in the attached figures are explained as follows:

[0021] 1. Cooling tower body; 2. Air inlet pipe; 3. First water supply pipe; 4. Second water supply pipe; 5. Air exhaust pipe; 6. On / off control valve; 7. Temperature detection component; 71. Temperature sensor; 72. Temperature controller; 721. Signal receiving module I; 722. Signal output module I; 723. Numerical analysis module I; 8. Pressure detection component; 81. Pressure sensor I; 82. Pressure sensor II; 83. Pressure drop controller; 831. Signal receiving module II; 832. Signal output module II; 833. Numerical analysis module II; 9. Flow indicator controller; 10. Alarm warning light I; 11. Alarm warning light II. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] refer to Figure 1 and Figure 2 This embodiment provides an air cooling tower, including a cooling tower body 1. From bottom to top, the exterior of the cooling tower body 1 is provided with an air inlet pipe 2, a first water supply pipe 3, a second water supply pipe 4, and an air exhaust pipe 5. The first water supply pipe 3 supplies cooling water to the cooling tower body 1, thereby performing a first cooling of the air entering the cooling tower body 1. The second water supply pipe 4 supplies chilled water to the cooling tower body 1, thereby performing a second cooling of the air after the first cooling, thus cooling the air to a suitable temperature. Both the first water supply pipe 3 and the second water supply pipe 4 are equipped with on / off control valves 6, which are electrically adjustable valves.

[0026] refer to Figure 1 and Figure 2 It also includes a temperature detection component 7 for detecting the temperature of the cooled air and a pressure detection component 8 for detecting the pressure inside the cooling tower body 1. The opening degree of the on / off control valve 6 is adjusted according to whether the temperature value detected by the temperature detection component 7 falls within the target temperature range and whether the pressure value detected by the pressure detection component 8 falls within the target pressure range.

[0027] refer to Figure 1 and Figure 2 The temperature detection component 7 includes a temperature sensor 71 and a temperature controller 72. The detection end of the temperature sensor 71 is located at the air inlet end of the air exhaust pipe 5. The temperature sensor 71 and the on / off control valve 6 are connected to the temperature controller 72 via signal connection. The temperature controller 72 includes a signal receiving module I 721, a signal output module I 722, and a numerical analysis module I 723. The signal output end of the temperature sensor 71 is connected to the signal receiving module I 721, and the signal receiving end of each on / off control valve 6 is connected to the signal output module I 722.

[0028] refer to Figure 1 and Figure 2 The pressure detection assembly 8 includes pressure sensor I 82, pressure sensor II 82, and pressure drop controller 83. Pressure sensor I 81 is located at the lower part of the cooling tower body 1 and above the air inlet, while pressure sensor II 82 is located at the upper part of the cooling tower body 1. Pressure sensors I 81, II 82, and on / off control valves 6 are all connected to the pressure drop controller 83. The pressure drop controller 83 includes a signal receiving module II 831, a signal output module II 832, and a numerical analysis module II 833. The signal output terminals of pressure sensors I 81 and II 82 are connected to the signal receiving module of the pressure drop controller 83, and the signal receiving terminal of each on / off control valve 6 is connected to the signal output terminal of the pressure drop controller 83.

[0029] refer to Figure 1 and Figure 2During operation, temperature sensor 71 detects the air temperature at the inlet of air exhaust pipe 5 (the inlet temperature of air exhaust pipe is the same as the air temperature at the top of the cooling tower body) and transmits it to temperature controller 71. Temperature controller 72 receives the signal and performs data analysis and calculation through its internal numerical analysis module I 723. If the cooled air temperature is not within the set range (6℃~10℃), temperature controller 72 controls the opening of on / off control valve 6, thereby adjusting the flow rate of cooling water supplied from the first water supply pipe 3 to the cooling tower body 1 (350m³ / h~450 m³ / h) and adjusting the flow rate of cooling water supplied from the second water supply pipe 4 to the cooling tower body 1 (60m³ / h~80m³ / h). (m³ / h) By adjusting the opening of the on / off control valve 6, the water flow rate from the nozzles inside the cooling tower body can be increased or decreased, thereby cooling the air temperature inside the cooling tower body 1 to the required temperature range. For example, when the air temperature at the top of the tower is detected to be higher than the set temperature range, the opening of the on / off control valve 6 is increased. At this time, the water flow rate from the nozzles inside the cooling tower body 1 is larger, resulting in greater resistance to the air entering the cooling tower body 1. This hinders the upward flow of air along the height of the cooling tower body 1, prolonging the time the air spends inside the cooling tower body 1, thus achieving cooling of the air to the set temperature range. Conversely, when the air temperature at the top of the tower is lower than the set temperature value, the opening of the on / off control valve 6 is decreased. At this time, the water flow rate from the nozzles inside the cooling tower body 1 is smaller, resulting in less resistance to the air entering the cooling tower body 1, reducing the time the air spends inside the cooling tower body 1, thus achieving cooling of the air to the set temperature range.

[0030] refer to Figure 1 and Figure 2 When the air temperature at the top of the tower is cooled to the set temperature range, and the resistance inside the cooling tower body 1 remains high or low, the internal pressure of the cooling tower body 1 will fluctuate greatly, causing the tower plate to overflow and leak. Therefore, the pressure detection component 8 is used to detect the change in pressure inside the tower, which in turn acts on the on / off control valve to adjust the flow rate of water supplied to the cooling tower by the first water supply pipe 3 and the second water supply pipe 4.

[0031] refer to Figure 1 and Figure 2Pressure sensor I81 detects the pressure at the air intake pipe 2, and pressure sensor II82 detects the pressure at the top of the cooling tower body 1. Both sensors transmit the detected signals to the pressure drop controller 83. The numerical analysis module II833 in the pressure drop controller 83 analyzes and calculates whether the pressure difference between the top and bottom of the cooling tower is within the set range (1.0 kPa ~ 2.5 kPa). If it is not within the set range, the pressure drop controller 83 acts in reverse on the on / off control valve 6, thereby adjusting the flow rate of cooling water or chilled water sprayed out of the tower, thus regulating the pressure inside the tower and restoring pressure balance to ensure the normal operation of the cooling tower body 1. Under normal operating conditions, the opening degree of the on / off valve 6 when the cooled air temperature is within the set temperature target range coincides with the opening degree of the on / off valve 6 when the internal pressure of the cooling tower is within the set pressure target range (see reference). Figure 3 and Figure 4 The changes in temperature and pressure in the figure are shown as linear examples, but curves can also be used.

[0032] refer to Figure 1 and Figure 2 Both the first water supply pipe 3 and the second water supply pipe 4 are equipped with flow indicator controllers 9 for detecting water flow. These controllers allow for convenient detection of the liquid flow rate within the pipes. The system also includes alarm lights I10 and II11. The signal receiver of alarm light I10 is connected to signal output module I722, and the signal receiver of alarm light II11 is connected to signal output module II832. Alarm lights I10 alert staff to whether the temperature at the top of the tower is within the set range, and alarm lights II11 alert staff to whether the pressure inside the tower is within the set range.

[0033] In summary, by adjusting the opening of the on / off control valve 6 based on whether the temperature value detected by the temperature detection component 7 falls within the target temperature range and whether the pressure value detected by the pressure detection component 8 falls within the target pressure range, the air temperature at the top of the tower can be effectively controlled, improving the level of on-site automation control. Furthermore, the air cooling tower can maintain a reasonable tower pressure drop, preventing flooding and leakage of the tower plates.

[0034] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. An air cooling tower, comprising a cooling tower body (1), wherein an air inlet pipe (2), a first water supply pipe (3), a second water supply pipe (4), and an air outlet pipe (5) are sequentially arranged from bottom to top on the exterior of the cooling tower body (1), wherein an on / off control valve (6) is provided on both the first water supply pipe (3) and the second water supply pipe (4), characterized in that, It also includes a temperature detection component (7) for detecting the temperature of the cooled air and a pressure detection component (8) for detecting the pressure inside the cooling tower body (1). The opening degree of the on / off control valve (6) is adjusted according to whether the temperature value detected by the temperature detection component (7) falls within the target temperature range and whether the pressure value detected by the pressure detection component (8) falls within the target pressure range.

2. The air cooling tower according to claim 1, characterized in that, The temperature detection component (7) includes a temperature sensor (71) and a temperature controller (72). The detection end of the temperature sensor (71) is located at the air inlet end of the air exhaust pipe (5). The temperature sensor (71) and the on / off control valve (6) are connected to the temperature controller (72) via signal connection.

3. The air cooling tower according to claim 2, characterized in that, The pressure detection assembly (8) includes pressure sensor I (81), pressure sensor II (82) and pressure drop controller (83). Pressure sensor I (81) is located at the lower part of the cooling tower and above the air inlet pipe (2). Pressure sensor II (82) is located at the upper part of the cooling tower body (1). Pressure sensor I (81), pressure sensor II (82) and on / off control valve (6) are all connected to pressure drop controller (83).

4. The air cooling tower according to claim 3, characterized in that, The temperature controller (72) includes a signal receiving module I (721), a signal output module I (722), and a numerical analysis module I (723). The signal output terminal of the temperature sensor (71) is connected to the signal receiving module I (721), and the signal receiving terminal of each on / off control valve (6) is connected to the signal output module I (722).

5. The air cooling tower according to claim 4, characterized in that, The pressure drop controller (83) includes a signal receiving module II (831), a signal output module II (832), and a numerical analysis module II (833). The signal output terminals of the pressure sensor I (81) and the pressure sensor II (82) are connected to the signal receiving module of the pressure drop controller (83), and the signal receiving terminal of each on / off control valve (6) is connected to the signal output terminal of the pressure drop controller (83).

6. The air cooling tower according to claim 5, characterized in that, Both the first water supply pipe (3) and the second water supply pipe (4) are equipped with flow indicator controllers (9) for detecting water flow.

7. The air cooling tower according to claim 6, characterized in that, It also includes alarm warning light I (10) and alarm warning light II (11), wherein the signal receiving end of the alarm warning light I (10) is connected to the signal output module I (722), and the signal receiving end of the alarm warning light II (11) is connected to the signal output module II (832).

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