Shelter leakage detection system

Abstract

The utility model relates to a shelter leakage detection system which comprises the components of a shelter body which encloses a space to be detected; the air inlet mechanism comprises a positive pressure air source, a first air pipe and a flow adjusting valve, one end of the first air pipe is communicated with the positive pressure air source, the other end of the first air pipe is communicated with the space to be measured, and the flow adjusting valve is communicated with the first air pipe; the brushing mechanism comprises a driving unit, a brushing unit and a foam water supply unit, and the brushing unit and the driving unit are connected to move between the foam water supply unit and the outer wall of the shelter body; and the detection mechanism comprises a second air pipe, a micromanometer, a visual unit, a data processing unit and a display unit. Through the arrangement, on the premise that the structure of the shelter is not damaged or influenced, the hidden danger of water leakage in the production process of the shelter is rapidly detected, the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of leakage detection systems, and in particular to a leakage detection system for a mobile shelter. Background Technology

[0002] As a relatively independent and enclosed spatial structure, a mobile medical unit (MMU) requires excellent airtightness to ensure a clean internal environment and prevent external contaminated air from entering and affecting medical operations and patient safety. The waterproofing and sealing measures for the MMU mainly focus on the following areas: the gaps between the outer edging and the MMU wall panels, the edges of the outer edging, and the rivet holes connecting the outer edging and the MMU wall panels. These areas require the application of sealant. During the manufacturing process, discontinuous application of sealant or misaligned rivet connections may occur; furthermore, over prolonged use, the sealant may crack due to aging, and rivet connections may loosen due to corrosion. These situations can all lead to water leakage problems. Water entering the MMU wall panels will significantly reduce its service life, and if water enters the interior, it will affect the normal operation of internal equipment. Because these tiny sealing failures and cracks are difficult to detect, they often prolong the inspection cycle and reduce production efficiency. Therefore, after the MMU is assembled, an accurate airtightness test is necessary.

[0003] Currently, there are two main methods for detecting water leakage in modular shelters: 1. Rain test: The modular shelter is placed in a rain test laboratory under normal working conditions. The rain test equipment is turned on, with a rain intensity of 6 mm / min and a test time of 1 hour. After the test, the shelter's walls, interior, and rivet heads connecting the walls are visually inspected for any signs of leakage. 2. Kerosene test: This method uses the device described in the patent "CN 207147720 U" ("Device for Detecting Leakage at the Top of Modular Shelter"). When testing for water leakage in the shelter, kerosene is poured into an oil container. The handle is held, the sealing device is opened, and the kerosene leaks into the lower cavity, flowing from the oil outlet to a cylindrical brush. The cylindrical brush is then applied directly to the rivets or welded areas on the top of the shelter. The appearance of bubbles on the surface or the presence of leaking kerosene inside indicates damage. Method 1 for detecting water leakage in modular shelters has drawbacks: it is time-consuming, costly, and inefficient. The combined rain test and inspection time must be at least 1.5 hours. For hidden leaks, the rain test time needs to be extended to detect them. Each rain test consumes a large amount of water and electricity resources, increasing production costs. Method 2 for detecting leaks in the above-mentioned modular shelter has shortcomings: kerosene can enter the shelter's walls and interior through the leak, and once it seeps in, it cannot be completely cleaned; after a long period, kerosene seeping into the walls can cause the adhesive to fail, potentially leading to delamination or bulging of the shelter walls. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problems of excessive cost of rain method and easy damage to container when using kerosene method for container air tightness testing in the prior art, and thus provide a container leakage detection system.

[0005] To solve the above-mentioned technical problems, this utility model provides a container leakage detection system, comprising:

[0006] The modular cabin itself encloses the space to be measured.

[0007] An air intake mechanism includes: a positive pressure air source, a first air pipe, and a flow regulating valve. One end of the first air pipe is connected to the positive pressure air source and the other end is connected to the space to be measured. The flow regulating valve is connected to the first air pipe.

[0008] A coating mechanism, comprising: a drive unit, a coating unit, and a foam water supply unit, wherein the coating unit and the drive unit are connected to move between the foam water supply unit and the outer wall of the container body.

[0009] The testing mechanism includes: a second trachea, a micro-pressure gauge, a vision unit, a data processing unit, and a display unit. The two ends of the second trachea are respectively connected to the micro-pressure gauge and the space to be tested. The vision unit is located on the periphery of the container body. The data processing unit is connected to the vision unit and the micro-pressure gauge. The display unit is connected to the data processing unit.

[0010] In one embodiment of this utility model, a one-way valve is provided between the positive pressure air source and the container body.

[0011] In one embodiment of this utility model, the driving unit is a three-axis servo drive mechanism or a robot, and the brushing unit includes a bracket and a roller brush. The roller brush is rotatably connected to the bracket, and the bracket is connected to the output end of the three-axis servo drive mechanism or the robot.

[0012] In one embodiment of this utility model, a controller unit is also included, which is connected to the data processing unit, the display unit, the drive unit, the micro pressure gauge, the flow regulating valve, and the vision unit.

[0013] In one embodiment of this utility model, an alarm unit is also included, which is connected to the controller unit.

[0014] In one embodiment of this utility model, the alarm unit includes an alarm light and a buzzer.

[0015] In one embodiment of this utility model, the number of alarm lights is at least two, and each has at least two colors. The alarm lights are connected to the controller unit.

[0016] In one embodiment of this utility model, the vision unit is a vision camera, and there are multiple vision cameras, which are respectively arranged on the periphery of the container body.

[0017] In one embodiment of this utility model, a communication unit and a cloud server are also included. The communication unit is connected to the controller unit and the cloud server.

[0018] In one embodiment of the present invention, the positive pressure gas source is used to provide tracer gas, and the drive unit is also connected to a gas sensor.

[0019] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0020] This utility model discloses a container leakage detection system. A foam water supply unit supplies foam water to a coating unit, which then evenly coats the outer wall of the container body during its movement. A second air pipe transmits the air pressure within the test space to a micro-pressure gauge, which measures and displays the air pressure in real time to confirm a positive pressure inside the container. A vision unit continuously captures images of the foam water on the outer wall of the container body, including the presence, size, number, and location of bubbles, as well as their dynamic changes. This image information is transmitted to a data processing unit, which analyzes and processes the airtightness test results and transmits them to a display unit for intuitive visualization. Through the coordinated operation of the air intake, coating, and detection processes, the system monitors and analyzes the bubble formation on the container wall surface, achieving effective detection and evaluation of the container's airtightness. The test results are clearly and intuitively displayed. This system enables rapid detection of potential water leakage during container production without damaging or affecting the container structure, reducing production costs and improving efficiency. It is also suitable for users to detect and troubleshoot water leakage in their containers at the point of use. Attached Figure Description

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the detection system of this utility model;

[0023] Figure 2 This is a flowchart illustrating the detection system of this utility model.

[0024] Explanation of the markings on the attached diagrams in the instruction manual: 1. Positive pressure air source; 2. First air pipe; 3. Flow regulating valve; 4. Micro pressure gauge; 5. Painting unit; 6. Container body; 7. Second air pipe. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention. Example

[0026] Reference Figure 1 As shown, the present invention provides a container leakage detection system, comprising:

[0027] The main body of the modular cabin is 6, which encloses the space to be measured;

[0028] An air intake mechanism includes: a positive pressure air source 1, a first air pipe 2, and a flow regulating valve 3. One end of the first air pipe 2 is connected to the positive pressure air source 1 and the other end is connected to the space to be measured. The flow regulating valve 3 is connected to the first air pipe 2.

[0029] The coating mechanism includes: a drive unit, a coating unit 5, and a foam water supply unit, wherein the coating unit 5 and the drive unit are connected to move between the foam water supply unit and the outer wall of the container body 6.

[0030] The testing mechanism includes: a second trachea 7, a micro-pressure gauge 4, a vision unit, a data processing unit, and a display unit. The two ends of the second trachea 7 are respectively connected to the micro-pressure gauge 4 and the space to be tested. The vision unit is located on the periphery of the container body 6. The data processing unit is connected to the vision unit and the micro-pressure gauge 4 respectively. The display unit is connected to the data processing unit.

[0031] The modular shelter leakage detection system of this invention generates pressurized gas through a positive pressure gas source 1. The gas is delivered to the test space of the modular shelter body 6 through a first gas pipe 2. The amount of gas entering the test space per unit time can be controlled by adjusting the opening of the flow regulating valve 3. A drive unit drives the connected coating unit 5 to move. Foam water is supplied to the coating unit 5 through a foam water supply unit. During the movement, the coating unit 5 evenly applies foam water to the outer wall of the modular shelter body 6. A second gas pipe 7 transmits the gas pressure in the test space to a micro pressure gauge 4, which measures and displays the pressure in real time. The air pressure value inside the test space is displayed to confirm that the cabin is under positive pressure. The vision unit continuously captures images of the foam water state on the outer wall of the cabin body 6, including whether bubbles are generated, the size, number, location, and dynamic changes of the bubbles, and transmits the image information to the data processing unit. The data processing unit transmits the airtightness test results obtained from the analysis to the display unit for intuitive display. Through the coordinated work of the above air intake, coating, and testing processes, the generation of bubbles on the surface of the cabin wall is monitored and analyzed, so as to achieve effective detection and evaluation of the airtightness performance of the cabin body 6, and the test results can be displayed intuitively and clearly.

[0032] The positive pressure airtightness testing method is employed. First, the tested container is inflated to establish and maintain a stable positive pressure inside. Then, a foam-water-soaked felt roller brush, capable of generating bubbles, is used to repeatedly brush against suspected leakage points (such as sealant seams, rivet heads, bolt heads, etc.). If bubbles appear at the test point, it indicates an air leak, thus identifying a potential water leakage hazard.

[0033] The flow rate of the positive pressure air source 1 must be large enough to offset the air leakage of the tested cabin 6 and establish positive pressure inside the cabin. Generally, the flow rate of air source 1 should be greater than 1.2 m³ / min. Air source 1 can be a pre-installed fixed air source in the production workshop or a mobile air compressor or blower. The flow regulating valve 33 can adjust the air flow rate entering the tested cabin 6 to establish a stable pressure inside. During the testing process, the internal air pressure of the tested cabin 6 is generally 500 Pa to 1000 Pa. The range of the micro-pressure gauge 44 is generally 0 Pa to 2000 Pa; a U-shaped pressure gauge can also be used instead. The foam water can be soapy water or diluted detergent, enabling a short testing time; the testing of one cabin can be completed within 20 minutes, greatly improving production efficiency.

[0034] This rapid detection device for leaking prefabricated houses features a simple structure, low cost, and short detection time. It can complete the detection of a prefabricated house within 20 minutes, greatly improving production efficiency.

[0035] A one-way valve is installed between the positive pressure gas source 1 and the container body 6 to control the direction of gas flow. The one-way valve allows gas to flow only from the positive pressure gas source 1 to the space to be measured in the container body 6, while preventing gas from flowing in the opposite direction. In particular, when the gas source is used to provide tracer gas, it can prevent tracer gas backflow.

[0036] The drive unit is a three-axis servo drive mechanism or a robotic arm. The painting unit 5 includes a bracket and a roller brush. The roller brush is rotatably connected to the bracket, and the bracket is connected to the output end of the three-axis servo drive mechanism or the robotic arm. The three-axis servo drive mechanism can precisely control the position and movement in three mutually perpendicular directions, enabling complex spatial trajectory movements. It consists of three mutually perpendicular and sequentially connected linear motors. The robotic arm adopts a multi-joint structure with 4-6 degrees of freedom, adapting to the painting needs of the outer wall of the container body 6 of various shapes and sizes. The roller brush can evenly apply foam water to the outer wall of the container body 6 through its own rotation. The bracket, as the support structure for the roller brush, is connected to the output end of the three-axis servo drive mechanism or the robotic arm, thus moving between the foam water supply unit and the outer wall of the container body 6 under the drive of the drive unit.

[0037] It also includes a controller unit, which is connected to the data processing unit, display unit, drive unit, micro-pressure gauge 4, flow regulating valve 3, and vision unit. The controller unit can be a high-performance industrial control computer (IPC) or programmable logic controller (PLC) to centrally control and coordinate the various units, ensuring that the entire airtightness testing process can be carried out in an orderly and accurate manner. By receiving data information from each unit and sending corresponding control commands to each unit according to preset programs and algorithms, it achieves precise control and management of air intake, coating, and testing. In the air intake stage, the controller unit sends control commands to the flow regulating valve 3 according to preset air intake parameters, such as air intake pressure and flow rate, to control the gas flow rate entering the test space of the container body 6 by adjusting the opening of the flow regulating valve 3. At the same time, the controller unit receives air pressure data from the micro-pressure gauge 4 in real time. When the air pressure reaches the preset air intake pressure value, the controller unit sends a closing command to the flow regulating valve 3 to stop the air intake operation. The controller unit sends control commands to the drive unit based on the shape and size of the container body 6, as well as preset brushing paths and speeds. This drives the brushing unit 5 to move along the outer wall of the container body 6 according to a predetermined trajectory and speed. During the brushing process, the controller unit also interacts with the foam water supply unit to control the timing and flow rate of the foam water supply, ensuring that the roller brush can evenly pick up and apply the foam water. During the airtightness testing phase, the controller unit continuously receives air pressure data from the micro-pressure gauge 4 and image data from the vision unit, transmitting this data in real time to the data processing unit for analysis. Simultaneously, based on the analysis results from the data processing unit, such as whether the airtightness performance is qualified or whether further testing is needed, the controller unit decides whether to continue the current testing operation or make corresponding adjustments.

[0038] It also includes an alarm unit, which is connected to the controller unit, receives various signals from the controller unit, and performs corresponding alarm actions based on these signals, so as to promptly remind operators of problems such as substandard test results.

[0039] The alarm unit includes an alarm light and a buzzer, which alert the operator to abnormalities in the airtightness detection system through different sensory stimuli, namely visual and auditory stimuli, to ensure that the operator can detect and take appropriate action in a timely manner.

[0040] The number of alarm lights is at least two, and each has at least two colors. The alarm lights are connected to the controller unit. By setting at least two alarm lights with at least two colors and connecting them to the controller unit, a more distinctive and information-rich alarm system can be constructed. This system can more effectively convey various operating statuses and abnormal information of the airtightness detection system to the operators, at least distinguishing between normal and abnormal states, which helps to improve the maintainability of the system.

[0041] The vision unit is a vision camera. There are multiple vision cameras, which are respectively arranged around the periphery of the container body 6 to ensure effective stitching and complementarity during image analysis and processing. The camera is equipped with a zoom lens. The focal length of the lens is selected according to the size of the container body 6 and the distance between the camera and the container body 6 to ensure that it can cover a sufficiently large field of view without image distortion. The aperture size is adjustable to adapt to different lighting conditions and ensure that clear images can be obtained in various lighting environments.

[0042] It also includes a communication unit and a cloud server. The communication unit is connected to the controller unit and the cloud server. The communication unit can adopt modules based on various communication technologies, such as 4G / 5G wireless communication modules, Ethernet communication modules, etc. It can transmit various data in the airtightness detection process, such as detection parameters, detection results, equipment operating status, etc., to the cloud server in real time for storage and further analysis. It also allows authorized remote users to access the cloud server through the network to obtain this data and perform remote monitoring and management of the system.

[0043] When the container can be completely sealed, the positive pressure gas source 1 is used to provide tracer gas. The drive unit is also connected to a gas sensor. The tracer gas is a mixture of halogen gas (CFC, HCFC, and HFC refrigerants), helium, nitrogen, and 95% hydrogen. Hydrogen is the lightest element, with a high molecular velocity and lower viscosity than any other gas, making it easy to fill, vent, and dissipate. It passes through a leak hole faster. When it passes through a potentially leaking area, if helium leaks out, the surrounding helium concentration will change. The gas sensor detects the concentration change and transmits the corresponding electrical signal to the data processing unit, improving the quality and efficiency of airtightness detection.

[0044] The testing method is as follows: 1. Connect the testing system to the container being tested;

[0045] 2. Close all doors, windows and openings of the modular shelter. Seal the gaps in the door, window and opening covers with masking tape to ensure that these gaps are well sealed and reduce air leakage.

[0046] 3. Turn on the positive pressure gas source 1 and supply gas into the cabin through the first gas pipe 2 to establish positive pressure inside the cabin. Adjust the flow regulating valve 3 to keep the pressure difference between the inside and outside of the cabin between 500Pa and 1000Pa and maintain it stable.

[0047] 4. Use a felt roller brush dipped in foam water to brush back and forth on all the sealant joints, rivet heads, bolt heads and other test points on the outer surface of the test container, and check while brushing.

[0048] 5. If bubbles or splashes appear in a certain place, it indicates that there is an air leak at that test point and there is a potential risk of water leakage.

[0049] 6. Mark any areas where bubbles or splashes appear and repair them according to the relevant process specifications.

[0050] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A container cabin leakage detection system, characterized in that, include: The modular cabin itself encloses the space to be measured. An air intake mechanism includes: a positive pressure air source, a first air pipe, and a flow regulating valve. One end of the first air pipe is connected to the positive pressure air source and the other end is connected to the space to be measured. The flow regulating valve is connected to the first air pipe. A coating mechanism, comprising: a drive unit, a coating unit, and a foam water supply unit, wherein the coating unit and the drive unit are connected to move between the foam water supply unit and the outer wall of the container body. The testing mechanism includes: a second trachea, a micro-pressure gauge, a vision unit, a data processing unit, and a display unit. The two ends of the second trachea are connected to the micro-pressure gauge and the space to be tested, respectively. The vision unit is located around the perimeter of the main body of the container. The data processing unit is connected to both the vision unit and the micro-pressure gauge. The display unit is connected to the data processing unit. The driving unit is a robotic arm. The coating unit includes a support and a roller brush. The roller brush is rotatably connected to the support, and the support is connected to the output end of the robotic arm. A controller unit is also included, connected to the data processing unit, display unit, driving unit, micro-pressure gauge, flow regulating valve, and vision unit.

2. The container leakage detection system according to claim 1, characterized in that: A one-way valve is installed between the positive pressure air source and the container body.

3. The container leakage detection system according to claim 1, characterized in that: It also includes an alarm unit, which is connected to the controller unit.

4. The container leakage detection system according to claim 3, characterized in that: The alarm unit includes an alarm light and a buzzer.

5. The container leakage detection system according to claim 4, characterized in that: The number of alarm lights is at least two, and each has at least two colors. The alarm lights are connected to the controller unit.

6. The container leakage detection system according to claim 1, characterized in that: The vision unit is a vision camera, and there are multiple vision cameras, which are respectively arranged around the perimeter of the container body.

7. The container leakage detection system according to claim 1, characterized in that: It also includes a communication unit and a cloud server, wherein the communication unit is connected to the controller unit and the cloud server.

8. The container leakage detection system according to claim 1, characterized in that: The positive pressure gas source is used to provide tracer gas, and the drive unit is also connected to a gas sensor.

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