Ventilation device for civil air defense engineering

Abstract

The utility model relates to the technical field of civil air defense engineering equipment, in particular to an air interchanger for civil air defense engineering, which comprises a water bath cooling tank, a hot air pipe, a radiation cooling piece, a temperature sensor, a water injection pump, a drainage pump and a controller, the hot air pipe is arranged in the water bath cooling tank; the radiation cooling piece is arranged above the water bath cooling tank and is connected with the hot air pipe; the temperature sensor is mounted on the inner bottom wall of the water bath cooling tank; the output end of the water injection pump and the input end of the drainage pump communicate with the water bath cooling tank; the input end of the controller is electrically connected with the temperature sensor, and the output end of the controller is electrically connected with the water injection pump and the drainage pump. According to the utility model, the problem of poor cooling effect on exhausted hot air can be solved.

Description

Technical Field

[0001] This utility model relates to the field of civil defense engineering equipment technology, specifically to a ventilation device for civil defense engineering. Background Technology

[0002] Civil defense projects refer to underground protective buildings constructed separately to ensure the shelter of personnel and materials, command of civil air defense, and medical rescue during wartime, as well as basements built in conjunction with above-ground buildings that can be used for air defense during wartime; and generally, civil defense projects need to be equipped with ventilation and air exchange equipment to facilitate the flow of air in the space.

[0003] Patent application number CN202220212311.4 discloses a ventilation structure for civil defense projects. It addresses the problem that hot air discharged from ventilation equipment in civil defense projects is easily detected by external infrared detectors by guiding the high-heat-content exhaust air into a water tank for cooling. While this patent can cool the discharged hot air, the cooling water used to lower the air temperature remains stationary within the tank. As the cooling water continuously absorbs heat from the hot air, its temperature rises, and the cooling effect diminishes. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a ventilation device for civil defense projects to solve the problem of poor cooling effect on exhaust hot air.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A ventilation device for civil defense engineering includes a water bath cooling tank, a hot air pipe, a radiant cooling component, a temperature sensor, a water injection pump, a drainage pump, and a controller. The hot air pipe is disposed inside the water bath cooling tank. The radiant cooling component is disposed above the water bath cooling tank and connected to the hot air pipe. The temperature sensor is installed on the bottom wall of the water bath cooling tank. The output end of the water injection pump and the input end of the drainage pump are connected to the interior of the water bath cooling tank. The input end of the controller is electrically connected to the temperature sensor, and the output end of the controller is electrically connected to the water injection pump and the drainage pump.

[0007] As a further improvement of this utility model, the hot air pipe is in the form of a vertical spiral.

[0008] As a further embodiment of this utility model: the radiative cooling component includes a substrate and a heat dissipation pipe; the heat dissipation pipe is fixedly disposed on the substrate; both ends of the heat dissipation pipe extend from both sides of the substrate, and one end is connected to the hot air pipe; a high emissivity material layer is coated on the surface of the heat dissipation pipe.

[0009] As a further embodiment of this utility model, the heat dissipation pipes are distributed on the substrate in a meandering manner.

[0010] As a further improvement of this utility model, valves are respectively installed on the pipes connecting the water injection pump and the drainage pump to the water bath cooling tank.

[0011] As a further improvement of this utility model, a filter is installed on the pipe connecting the water pump to the water bath cooling tank.

[0012] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0013] This invention provides a ventilation device for civil defense projects. By placing a hot air pipe inside a water bath cooling tank, the hot air exhausted from the civil defense project flows along the hot air pipe and undergoes initial cooling within the water bath cooling tank. Simultaneously, by installing a radiant cooling component connected to the hot air pipe above the water bath cooling tank, the hot air can undergo radiant cooling, achieving further cooling. Compared with existing technologies that only use water bath cooling, this invention's water bath cooling can rapidly absorb a large amount of heat, while radiant cooling can further dissipate heat at a lower temperature. The combination of the two achieves a more efficient cooling effect.

[0014] In addition, when the cooling water temperature detected by the temperature sensor exceeds the preset high temperature threshold, the controller can first start the drain pump to drain the old cooling water, and then start the water injection pump to inject fresh cooling water into the water bath cooling tank to complete the replacement of the cooling water. Compared with the prior art that does not replace the cooling water, this utility model can prevent the cooling water temperature from being too high and affecting the cooling effect by replacing the cooling water in the water bath cooling tank. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the ventilation device for civil defense engineering described in an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 Top view of the radiative cooling component described in the embodiment.

[0018] The correspondence between the labels and component names in the attached figures is as follows:

[0019] 1. Water bath cooling tank; 2. Hot air pipe; 3. Radiant cooling component; 31. Base plate; 32. Heat dissipation pipe; 4. Temperature sensor; 51. Water injection pump; 52. Drain pump; 6. Controller; 7. Valve; 8. Filter. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the following description is to be considered exemplary in nature and not restrictive.

[0021] Please refer to Figure 1 In one embodiment of the ventilation device for civil defense engineering of this utility model, the ventilation device for civil defense engineering includes a water bath cooling tank 1, a hot air pipe 2, a radiant cooling component 3, a temperature sensor 4, a water injection pump 51, a drainage pump 52, and a controller 6.

[0022] The water bath cooling tank 1 is filled with cooling water. The hot air pipe 2 is vertically fixed in the water bath cooling tank 1 and submerged in the cooling water. The lower end of the hot air pipe 2 is used to introduce hot air discharged from the civil defense project. The radiant cooling component 3 is set above the water bath cooling tank 1 and connected to the upper end of the hot air pipe 2. The hot air in the hot air pipe 2 is cooled by the cooling water and then input into the radiant cooling component 3. The heat is dissipated into the environment in the form of infrared radiation through the high emissivity surface of the radiant cooling component 3, further reducing the temperature.

[0023] Temperature sensor 4 is installed on the bottom wall of the water bath cooling tank 1 to monitor the temperature of the cooling water in real time. The input of water injection pump 51 is used to introduce cooling water, and the output of water injection pump 51 is connected to the top of the water bath cooling tank 1 to inject cooling water into the water bath cooling tank 1. The input of drain pump 52 is connected to the bottom of the water bath cooling tank 1, and the output of drain pump 52 is used to drain the cooling water in the water bath cooling tank 1. The input of controller 6 is electrically connected to temperature sensor 4, and the output of controller 6 is electrically connected to water injection pump 51 and drain pump 52. Controller 6 can be a PLC controller with the brand and model "Siemens S7-1200". Temperature sensor 4 continuously monitors the temperature of the cooling water and converts the temperature signal into an electrical signal, which is transmitted to PLC controller 6. PLC controller 6 performs logic processing. When the cooling water temperature exceeds the preset high temperature threshold, the system triggers the replacement process, that is, PLC controller 6 outputs a control signal to start drain pump 52 to drain the old cooling water. After complete drainage, drain pump 52 is turned off and water injection pump 51 is started to inject fresh cooling water into water bath cooling tank 1.

[0024] Specifically, the hot air pipe 2 can be set in a vertical spiral shape, with its outer diameter slightly smaller than the inner diameter of the water bath cooling tank 1. The spiral design makes the hot air flow through the pipe longer, which helps the heat to be transferred to the cooling water for more time, further improving the cooling effect.

[0025] like Figure 2 As shown, the radiative cooling component 3 in this embodiment includes a substrate 31 and a heat dissipation pipe 32. The substrate 31 is laid flat. The heat dissipation pipe 32 is fixedly connected to the substrate 31, with both ends extending from both sides of the substrate 31. One end is connected to a hot air pipe 2 to allow hot air cooled by a water bath to pass through. The surface of the heat dissipation pipe 32 is coated with a high emissivity material layer (such as a ceramic coating or a metal oxide coating). When hot air flows inside the heat dissipation pipe 32, the high emissivity material layer on the surface of the heat dissipation pipe 32 can effectively dissipate the heat transferred by the hot air into the surrounding environment in the form of infrared radiation. In addition, the surface of the high emissivity material layer can be textured or have nanostructures added to enhance its radiation performance and heat exchange efficiency.

[0026] More specifically, the heat dissipation pipes 32 can be arranged in a meandering pattern on the substrate 31. Compared with straight pipes, this can provide a larger heat exchange area and improve cooling efficiency. Moreover, by increasing the heat dissipation area of ​​the heat source, the heat can be dispersed and balanced, making it easier for external infrared detectors or infrared sensors to detect and prevent the location of the underground shelter from being exposed.

[0027] Specifically, valves 7 are installed on the pipes connecting the water injection pump 51 and the drainage pump 52 to the water bath cooling tank 1 to control the flow rate and velocity of water injection and drainage, ensuring the stable operation and safety of the water injection system; furthermore, the valve 7 is preferably a solenoid valve, which is connected to the controller 6 mentioned above for convenient control.

[0028] Specifically, a filter 8 is installed on the pipe connecting the water pump 51 to the water bath cooling tank 1 to filter out impurities in the cooling water before water bath cooling, so as to prevent the surface of the hot air pipe 2 from being covered by impurities during the cooling process and thus reducing the heat exchange efficiency.

[0029] The method of use or working principle of this utility model is as follows:

[0030] The exhaust fan of the civil defense project is connected to the hot air pipe 2. The exhaust hot air flows in the hot air pipe 2 and transfers heat to the cooling water in the water bath cooling tank 1 for initial cooling. After being cooled by the water bath, the hot air enters the heat dissipation pipe 32 of the radiant cooling component 3. When it flows in the heat dissipation pipe 32, the high emissivity material layer on the surface of the heat dissipation pipe 32 can effectively dissipate the heat transferred by the hot air into the surrounding environment in the form of infrared radiation, thereby further dissipating heat.

[0031] During the water bath cooling process, temperature sensor 4 continuously monitors the temperature of the cooling water and converts the temperature signal into an electrical signal, which is then transmitted to PLC controller 6 for logic processing. When the cooling water temperature exceeds the preset high temperature threshold, the system triggers the replacement process, i.e., PLC controller 6 outputs a control signal to start drain pump 52 to drain the old cooling water. After complete drainage, drain pump 52 is turned off and water injection pump 51 is started to inject fresh cooling water into the water bath cooling tank 1.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ventilation device for civil defense engineering, characterized in that, The utility model provides a water bath cooling tank, hot gas pipe, radiation cooling part, temperature sensor, water injection pump, drainage pump and controller, the hot gas pipe is arranged in the water bath cooling tank, the radiation cooling part is arranged above the water bath cooling tank and is connected with the hot gas pipe, the temperature sensor is installed on the bottom wall in the water bath cooling tank, the output of water injection pump and the input of drainage pump are communicated with the inside of water bath cooling tank, the input of controller is electrically connected with temperature sensor, and the output of controller is electrically connected with water injection pump and drainage pump.

2. The air change device for a civil defense shelter according to claim 1, wherein The hot gas pipe is in vertical spiral shape.

3. The air change device for a civil defense shelter according to claim 1, wherein The radiation cooling part includes a substrate and a heat pipe, the heat pipe is fixedly arranged on the substrate, two ends of the heat pipe respectively extend from two sides of the substrate, and one end of the heat pipe is connected with the hot gas pipe, and a high-emissivity material layer is coated on the surface of the heat pipe.

4. The air change device for a civil defense shelter according to claim 3, wherein The heat pipe is in meandering shape and is distributed on the substrate.

5. The air change device for a civil defense shelter according to claim 1, wherein Valves are respectively installed on the pipelines connected with the water bath cooling tank.

6. The air change device for a civil defense shelter of claim 1, wherein A filter is installed on the pipeline connected with the water bath cooling tank.

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