A wind tunnel cloud uniformity detection device

Abstract

The application provides a wind tunnel cloud mist uniformity detection device, and belongs to the technical field of wind tunnel tests. Specifically, the device comprises a support, which is arranged in a wind tunnel test section. The support is provided with a plurality of water collection pipelines, and the length direction of the water collection pipelines is parallel to the length direction of the wind tunnel test section. A plurality of water collectors are arranged on the leeward side of the support. The water collectors and the water collection pipelines are in one-to-one correspondence. The inlet of the water collector is communicated with the leeward end of the water collection pipeline. Liquid droplets in the wind tunnel test section enter the water collector through the water collection pipeline. A detection assembly is arranged in the water collector to detect the water quantity in the water collector. The processing scheme improves the accuracy of the wind tunnel cloud mist uniformity detection and saves the required electric energy.

Description

Technical Field

[0001] This application relates to the field of wind tunnel testing, and in particular to a wind tunnel cloud uniformity testing device. Background Technology

[0002] In ideal conditions, water droplets in the icing wind tunnel and rain wind tunnel should be evenly distributed in the transverse and longitudinal directions of the wind tunnel test section. However, due to factors such as airflow and nozzle installation position, the droplet distribution in the test section cross section may change.

[0003] The assessment of cloud uniformity allows for timely adjustment of nozzle configuration and determination of nozzle quantity, thereby improving the uniformity of cloud in the experiment, reducing the difference in droplet distribution across the test section, and enhancing the validity of the experimental conclusions.

[0004] Existing methods for detecting the uniformity of ice in wind tunnels use a grid device to spray air at low temperatures, assessing cloud uniformity by measuring the thickness of ice accumulated on the grid surface. The main problems with this method are:

[0005] 1. The test must be conducted in a wind tunnel under cooling conditions. For a rain-exposed wind tunnel, the operating temperature is above 0℃, so this method cannot be used to evaluate the uniformity of clouds and fog.

[0006] 2. During the measurement process, uneven ice density caused by melting ice accumulation and open ice / frost can also lead to measurement errors.

[0007] 3. The refrigeration process is time-consuming and energy-intensive, and the measurement costs are high in terms of electricity and labor. Summary of the Invention

[0008] In view of this, this application provides a wind tunnel cloud uniformity detection device, which solves the problems in the prior art and improves the accuracy of wind tunnel cloud uniformity detection.

[0009] The wind tunnel cloud uniformity detection device provided in this application adopts the following technical solution:

[0010] A wind tunnel cloud uniformity detection device includes:

[0011] A bracket is used for installation in the wind tunnel test section. The bracket is equipped with several water collection pipes, the length direction of which is parallel to the length direction of the wind tunnel test section.

[0012] Multiple water collectors are installed on the leeward side of the bracket. Each water collector corresponds to a water collection pipeline. The inlet of each water collector is connected to the leeward end of the water collection pipeline. In the wind tunnel test section, droplets enter the water collector after passing through the water collection pipeline.

[0013] A detection component, installed inside the water collector, is used to detect the amount of water in the water collector.

[0014] Optionally, the inner wall of the windward end of the water collection pipe is a conical structure, and the large-diameter end of the conical structure is the windward end.

[0015] Optionally, the support is a grid support, and the grid intersections of the grid support are provided with water collection channels. The length direction of the water collection channels is parallel to the length direction of the wind tunnel test section, and the water collection channels pass through the windward and leeward sides of the grid support. The water collection channels serve as the water collection pipeline.

[0016] Optionally, a water collection channel is provided at each grid intersection of the grid support.

[0017] Optionally, the outer edge profile of the grid support is the same as the cross section of the wind tunnel test section.

[0018] Optionally, the detection component is a liquid level sensor, which is used to detect the liquid level height in the water collector.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] The device described in this application can measure cloud uniformity at room temperature and can be used in uncooled rain tunnels; no cooling is required during measurement, saving energy and testing time.

[0021] The data logger provides real-time, intuitive feedback on measurement results, allowing for real-time adjustment of nozzle configuration and water flow rate during the measurement process. Measurement results are directly output digitally, saving the need for manual input of ice accumulation values ​​and calculations. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the grid support structure of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the water collection pipeline, water collector, level sensor and cable of this application.

[0025] Explanation of reference numerals in the attached diagram: 1. Grille support; 2. Water collection pipe; 3. Water collector; 4. Liquid level sensor; 5. Cable. Detailed Implementation

[0026] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0027] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0029] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0030] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0031] This application provides a wind tunnel cloud uniformity detection device.

[0032] like Figure 1 and Figure 2As shown, a wind tunnel cloud uniformity testing device includes: a support frame for installation in a wind tunnel test section, the support frame having several water collection pipes 2, the length direction of the water collection pipes 2 being parallel to the length direction of the wind tunnel test section; multiple water collectors 3 installed on the leeward side of the support frame, the water collectors 3 corresponding one-to-one with the water collection pipes 2, the inlet of the water collector 3 being connected to the leeward end of the water collection pipe 2, and droplets in the wind tunnel test section entering the water collector 3 after passing through the water collection pipes 2; and a detection component installed inside the water collector 3 for detecting the amount of water inside the water collector 3.

[0033] During measurement, liquid enters water collector 3 through water collection pipe 2. The detection component outputs the water volume in water collector 3. By comparing the water volume data output by the detection component, the uniformity of cloud and fog can be evaluated, and the water content of the test section can be estimated.

[0034] The inner wall of the windward end of the water collection pipe 2 has a conical structure, with the larger diameter end of the conical structure being the windward end. Increasing the number of droplets collected by the water collection pipe 2 can reduce detection errors.

[0035] The support is a grid support 1, which includes several intersecting horizontal and vertical bars. The grid intersections of the grid support 1 are provided with water collection channels. The length direction of the water collection channels is parallel to the length direction of the wind tunnel test section, and the water collection channels pass through the windward and leeward sides of the grid support 1. The water collection channels serve as the water collection pipe 2.

[0036] A water collection channel is provided at each grid intersection of the grid support 1. As many water collection channels as possible are arranged to reduce detection errors.

[0037] The outer contour of the grid support 1 is the same as the cross-section of the wind tunnel test section. The grid support 1 should cover the entire cross-section of the wind tunnel test section as much as possible to ensure that water handpiece channels can be arranged at all locations in the wind tunnel test section.

[0038] The detection component is a liquid level sensor 4, which is used to detect the liquid level in the water collector 3. The data from the liquid level sensor 4 is connected to a data logger via a cable 5. The liquid level in the water collector 3 reflects the amount of water in the water collector 3. The liquid level signal is processed into a digital signal using the liquid level sensor 4 and the data logger.

[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wind tunnel cloud uniformity detection device, characterized in that, include: A bracket is used for installation in the wind tunnel test section. The bracket is provided with several water collection pipes (2), the length direction of which is parallel to the length direction of the wind tunnel test section. Multiple water collectors (3) are installed on the leeward side of the bracket. The water collectors (3) and the water collection pipes (2) correspond one-to-one. The inlet of the water collector (3) is connected to the leeward end of the water collection pipe (2). In the wind tunnel test section, droplets enter the water collectors (3) after passing through the water collection pipes (2). A detection component is installed inside the water collector (3) to detect the amount of water inside the water collector (3); The support is a grid support (1). The grid intersection of the grid support (1) is provided with a water collection channel. The length direction of the water collection channel is parallel to the length direction of the wind tunnel test section. The water collection channel runs through the windward side and the leeward side of the grid support (1). The water collection channel serves as the water collection pipeline (2).

2. The wind tunnel cloud uniformity detection device according to claim 1, characterized in that, The inner wall of the windward end of the water collection pipe (2) is a conical structure, and the large-diameter end of the conical structure is the windward end.

3. The wind tunnel cloud uniformity detection device according to claim 1, characterized in that, A water collection channel is provided at each grid intersection of the grid support (1).

4. The wind tunnel cloud uniformity detection device according to claim 1, characterized in that, The outer contour of the grid support (1) is the same as the cross section of the wind tunnel test section.

5. The wind tunnel cloud uniformity detection device according to claim 1, characterized in that, The detection component is a liquid level sensor (4), which is used to detect the liquid level in the water collector (3).

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