A closed cooling tower coil performance detection device

Abstract

The utility model discloses a closed cooling tower coil performance detection device belongs to the cooling tower performance detection technical field. Including abutting main body mechanism and leading mechanism, the main body mechanism includes from top to bottom setting water distribution unit, coil containing detection unit, filler containing unit and water collecting tank, and the water supply line is connected with water distribution unit. The utility model has the advantages of can carry out the coil performance test in the laboratory, avoids the influence of outside temperature and humidity to test result, reduces test error.

Description

Technical Field

[0001] This utility model relates to a closed-loop cooling tower coil performance testing device, belonging to the field of cooling tower performance testing technology. Background Technology

[0002] A cooling tower is a device that uses the direct or indirect contact between air and water to release waste heat generated in industrial production or air conditioning systems into the atmosphere through physical processes such as evaporative cooling, convection cooling, and radiation cooling. The operation of a cooling tower is based on the principle of heat transfer in thermodynamics, and it maintains the normal operating temperature of the system by lowering the water temperature.

[0003] The coil in a closed-circuit cooling tower is a crucial component for heat exchange. The coil's structural design and the corresponding adjustment of airflow and water volume directly affect the cooling effect of the closed-circuit cooling tower. Closed-circuit counter-flow cooling towers exchange heat through the circulating water within the coil, the cooling tower's own circulating water, and the air. Specifically, the heat exchange consists of three parts: heat dissipation through evaporation on the coil surface via the cooling tower's own circulating water, heat exchange between the circulating water within the coil and the cooling tower's own circulating water, and heat exchange between the circulating water within the coil and the air. Due to the complexity of the heat exchange process, it is difficult to calculate the coil's performance accurately, leading to coils that fail to meet requirements or have design redundancy, resulting in wasted energy. Furthermore, significant fluctuations in external temperature and humidity greatly affect the test results, introducing substantial errors and hindering accurate evaluation of the coil's performance. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a closed-loop cooling tower coil performance testing device that replaces existing theoretical calculations with laboratory experimental testing, resulting in more accurate coil performance data.

[0005] The technical solution of this utility model is: a closed cooling tower coil performance testing device, including an adjacent main body and an exhaust fan; the main body includes a water distribution unit, a coil housing testing unit, a packing housing unit and a water collection tank arranged from top to bottom, and a water supply pipeline connected to the water distribution unit.

[0006] The water distribution unit includes several water distribution pipes evenly distributed on the frame, the water distribution pipes are connected to the water tank, and several nozzles are evenly distributed at the bottom of the water distribution pipes.

[0007] The water distribution unit includes a water supply pipe connected to the water tank, and the bottom of the water supply pipe is connected to a water collection tank via a water pump.

[0008] The coil housing detection unit includes a coil housing cavity for housing the coil, a support frame for supporting the coil to be tested is provided at the bottom of the coil housing cavity, and a temperature sensor for testing the temperature of the coil to be tested. The controller is communicatively connected to the temperature sensor, and the display screen is communicatively connected to the controller. Acrylic outer plates are provided on both closed sides of the coil housing cavity, and a water collector is provided at the air outlet of the coil housing cavity. The water collector is connected to the air duct mechanism.

[0009] The coil containment detection unit also includes a flow meter for detecting the flow rate at the coil inlet and outlet.

[0010] The temperature sensor includes a temperature sensor a for detecting the temperature at the inlet and outlet of the coil, a temperature sensor b for detecting the temperature of each layer of coil, and a temperature sensor c installed in the water collection tank to detect the temperature of the water collection tank.

[0011] The detection points for each layer of the coil are located in the upstream, middle, and downstream sections through which the fluid flows.

[0012] The packing housing unit includes a packing housing cavity for placing packing material. The top of the packing housing cavity is connected to the coil housing cavity through a perforated plate. The bottom of the packing housing cavity is connected to a water collection tank. The air outlet of the packing housing cavity is connected to an air induced draft mechanism. The air inlet of the packing housing cavity is opposite to the air outlet of the packing housing cavity.

[0013] The air-expelling mechanism includes an air-expelling box connected to the main body. A guide plate is provided inside the air-expelling box. By setting the guide plate, a curved air-expelling channel is formed inside the air-expelling box. The outlet of the air-expelling channel is opposite to the bottom of the guide plate, and the outlet of the air-expelling channel is connected to the air-expelling fan.

[0014] An air volume meter is installed on the top of the frame and at the air inlet of the packing cavity.

[0015] The beneficial effects of this invention are: it allows for coil performance testing in a laboratory, avoiding the influence of external temperature and humidity fluctuations on test results and reducing test errors. Attached Figure Description

[0016] Figure 1 A perspective view of this utility model;

[0017] Figure 2 This is the front view of the present invention;

[0018] Figure 3 This is a side view of the present invention;

[0019] Figure 4 This is a top view of the present invention.

[0020] The attached diagram is labeled as follows: 1. Water collection tank, 2. Frame, 3. Water distribution pipe, 4. Water supply pipe, 5. Water pump, 6. Water collector, 7. Acrylic outer panel, 8. Packing cavity, 9. Air duct, 10. Baffle plate, 11. Water tank. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4 Further explanation of this utility model:

[0022] A closed-loop cooling tower coil performance testing device includes an adjacent main body and an exhaust fan. The main body includes a water distribution unit, a coil placement testing unit, a packing placement unit, and a water collection tank 1 arranged from top to bottom. A water supply pipeline is connected to the water distribution unit. The water distribution unit includes several water distribution pipes 3 evenly distributed on a frame 2. The water distribution pipes 3 are connected to a water tank 11. Several nozzles are evenly distributed at the bottom of the water distribution pipes 3. A water supply pipe 4 is connected to the water tank 11. The bottom of the water supply pipe 4 is connected to the water collection tank 1 via a water pump 5. The bottom of the water collection tank 1 has an openable drain outlet for drainage. The water pump 5 pumps water from the water collection tank 1 to the water tank 11 through the water supply pipe 4, supplying water to each water distribution pipe 3. The water distribution pipes 3 spray water onto the coil located in the coil placement testing unit through the nozzles. The nozzles are evenly distributed above the coil, resulting in more uniform water spraying.

[0023] The coil housing detection unit includes a coil housing cavity for housing the coil, a support frame for supporting the coil to be tested is provided at the bottom of the coil housing cavity, and a temperature sensor for testing the temperature of the coil to be tested. The controller is communicatively connected to the temperature sensor, and the display screen is communicatively connected to the controller. Acrylic outer plates 7 are provided on both closed sides of the coil housing cavity. A water collector 6 is provided at the air outlet of the coil housing cavity. The water collector 6 is connected to the air exhaust mechanism. The water collector 6 can prevent the water in the coil housing cavity from being sucked out by the air exhaust mechanism, thereby avoiding water waste.

[0024] The coil containment detection unit also includes a flow meter for detecting the flow rate at the coil inlet and outlet, thereby detecting changes in the flow rate at the coil inlet and outlet.

[0025] The temperature sensors include temperature sensor a for detecting the temperature at the inlet and outlet of the coil, thereby calculating the temperature drop at the inlet and outlet. The temperature sensors also include temperature sensor b for detecting the temperature of the fluid flowing through the upstream, middle, and downstream sections of each coil layer, thus calculating the temperature drop of each coil layer. Temperature sensor c is installed in the water collection tank 1, measuring the temperature of the cooling tower's self-circulating water after passing through the packing.

[0026] The packing housing unit includes a packing housing cavity 8 for placing the packing material. The top of the packing housing cavity 8 is connected to the coil housing cavity via a perforated plate. A temperature sensor d is installed on the perforated plate to detect the circulating water temperature at the perforated plate. The perforated plate can ensure uniform water distribution to the packing material. The bottom of the packing housing cavity 8 is connected to a water collection tank 1. The air outlet of the packing housing cavity 8 is connected to an exhaust fan mechanism. The air inlet and outlet of the packing housing cavity 8 are opposite to each other. The exhaust fan mechanism includes an exhaust box 9 connected to the main body mechanism. A guide plate 10 is installed inside the exhaust box 9. By setting the guide plate 10, a curved airflow channel is formed inside the exhaust box 9. The outlet of the airflow channel is opposite to the bottom of the guide plate 10. The outlet of the airflow channel is connected to an exhaust fan. The induced draft fan draws air at the outlet of the guide duct. The guide plate 10 prevents the induced draft fan from directly drawing air onto the outlet of the coil housing and the packing housing, thus avoiding the water being drawn out by strong suction. The guide plate 10 acts to slow and guide the flow, forming a 180-degree curved guide duct within the induced draft box 9 (e.g., Figure 2 (As shown).

[0027] The top of the frame 2 is equipped with an air volume meter, which measures the air volume entering the coil accommodating cavity to determine the most suitable air volume for the coil under test.

[0028] This invention features a temperature sensor and a flow meter installed at the inlet and outlet of the tested coil, respectively, to measure the temperature drop and flow rate of water passing through the cooling tower, allowing for the calculation of the coil's heat exchange capacity. Temperature sensors are also installed on both sides and in the middle of the upper and lower layers of the coil. By comparing the temperature distribution, it can be determined whether the actual capacity of the coil meets the design requirements, thus enabling adjustments to the coil. A fan is connected to a pre-reserved fan location in the induced draft box, and an airflow meter is used to measure the airflow passing through the monitoring device at the upper air inlet of the coil and the air inlet of the packing cavity 8, to determine the most suitable airflow for this coil. A temperature sensor c is installed in the water tank to measure the temperature of the cooling tower's self-circulating water after passing through the packing. A temperature sensor d is installed on the perforated plate to measure the temperature drop of the cooling tower's self-circulating water passing through the packing, which is also the temperature rise of the cooling tower's self-circulating water passing through the tested coil. Based on these data, it is easy to determine whether the coil meets the design requirements.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A closed-loop cooling tower coil performance testing device, characterized in that, It includes an adjacent main structure and an exhaust system; the main structure includes a water distribution unit, a coil holding detection unit, a packing holding unit and a water collection tank (1) arranged from top to bottom, and the water supply pipeline is connected to the water distribution unit; The coil housing detection unit includes a coil housing cavity for housing the coil, a support frame for supporting the coil to be tested is provided at the bottom of the coil housing cavity, and a temperature sensor for testing the temperature of the coil to be tested. The controller is connected to the temperature sensor, and the display screen is connected to the controller. Acrylic outer plates (7) are provided on both closed sides of the coil housing cavity. A water collector (6) is provided at the air outlet of the coil housing cavity. The water collector (6) is connected to the air duct mechanism.

2. The closed-loop cooling tower coil performance testing device according to claim 1, characterized in that, The water distribution unit includes several water distribution pipes (3) evenly distributed on the frame (2), the water distribution pipes (3) are connected to the water tank (11), and several nozzles are evenly distributed at the bottom of the water distribution pipes (3).

3. The closed-loop cooling tower coil performance testing device according to claim 2, characterized in that, The water distribution unit includes a water supply pipe (4) connected to the water tank (11), and the bottom of the water supply pipe (4) is connected to the water collection tank (1) via a water pump (5).

4. The closed-loop cooling tower coil performance testing device according to claim 1, characterized in that, The coil containment detection unit also includes a flow meter for detecting the flow rate at the coil inlet and outlet.

5. The closed-loop cooling tower coil performance testing device according to claim 1, characterized in that, The temperature sensor includes a temperature sensor a for detecting the temperature at the inlet and outlet of the coil, a temperature sensor b for detecting the temperature of each layer of coil, and a temperature sensor c set in the water collection tank (1) to detect the temperature of the water collection tank (1).

6. The closed-loop cooling tower coil performance testing device according to claim 5, characterized in that, The detection points for each layer of the coil are located in the upstream, middle, and downstream sections through which the fluid flows.

7. The closed-loop cooling tower coil performance testing device according to claim 2, characterized in that, The packing housing unit includes a packing housing cavity (8) for placing packing. The top of the packing housing cavity (8) is connected to the coil housing cavity through a perforated plate. A temperature sensor d is provided on the perforated plate. The bottom of the packing housing cavity (8) is connected to a water collection tank (1). The air outlet of the packing housing cavity (8) is connected to an air induced draft mechanism. The air inlet of the packing housing cavity (8) is opposite to the air outlet of the packing housing cavity (8).

8. The closed-loop cooling tower coil performance testing device according to claim 1, characterized in that, The air-guiding mechanism includes an air-guiding box (9) connected to the main body. A guide plate (10) is provided inside the air-guiding box (9). By setting the guide plate (10), a curved guide air duct is formed inside the air-guiding box (9). The outlet of the guide air duct is opposite to the bottom of the guide plate (10). The outlet of the guide air duct is connected to the air-guiding fan.

9. The closed-loop cooling tower coil performance testing device according to claim 7, characterized in that, An air volume meter is provided at the top of the frame (2) and at the air inlet of the filling cavity (8).

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