High-pressure helium flow detection device

Abstract

The utility model relates to the technical field of helium flow detection, and discloses a high-pressure helium flow detection device which comprises a cabinet body, a display is fixedly connected to the outer wall of the cabinet body, an alarm device is fixedly connected to the top of the cabinet body, a mouse keyboard is fixedly connected to the top of the cabinet body, and a maintenance assembly is arranged in the cabinet body. An electric control system is arranged in the cabinet body, a moving assembly is arranged at the bottom of the cabinet body, a heat dissipation device is arranged in the cabinet body, the overhaul assembly comprises a first overhaul door, a second overhaul door and a third overhaul door, one side of the first overhaul door is rotationally connected to the outer wall of the cabinet body, and the other side of the first overhaul door is rotationally connected to the outer wall of the cabinet body. One side of the second access door and one side of the third access door are rotationally connected to the other side of the cabinet body. In the utility model, the hardware is customized and developed according to the helium filling flow detection of the air conditioner indoor unit evaporator, and the hardware is integrated with a computer, a PLC, a display, an alarm system, a flowmeter and the like and can be flexibly configured and expanded.

Description

Technical Field

[0001] This utility model relates to the field of helium flow detection technology, and in particular to a high-pressure helium flow detection device. Background Technology

[0002] Air conditioning is widely used in homes, offices, commercial spaces, and industrial settings. In homes, air conditioning provides comfortable indoor temperatures, alleviating the heat of summer and the cold of winter. Offices rely on air conditioning to maintain a constant temperature, improving employee productivity. Shopping malls, cinemas, and other public places use central air conditioning to ensure a comfortable customer experience. In the industrial sector, precision instrument workshops and data centers require constant temperature and humidity environments, and air conditioning ensures the stable operation of equipment. Furthermore, hospitals, laboratories, and other special locations rely on air conditioning to control air cleanliness and meet professional requirements. Air conditioning has become an indispensable environmental control device in modern life. However, the performance of the indoor unit's evaporator is closely related to the air conditioning's effectiveness, making evaporator testing crucial.

[0003] During the manufacturing (welding) process of indoor unit evaporators, blockages or leaks may occur in the copper tubes due to welding techniques and improper operation by employees. This necessitates the development of helium leak detection equipment. However, during the helium leak detection process, it is essential to ensure that helium has been properly charged into the evaporator. This requires that the workpiece be fully helium charged before the helium detection equipment is installed. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a high-pressure helium flow detection device, which aims to improve the situation where the copper tubes of the indoor unit evaporator are blocked or leaking due to welding process and improper operation by employees during the manufacturing (welding) process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-pressure helium flow detection device, comprising a cabinet, a display fixedly connected to the outer wall of the cabinet, an alarm device fixedly connected to the top of the cabinet, a mouse and keyboard fixedly connected to the top of the cabinet, a maintenance component installed inside the cabinet, an electrical control system installed inside the cabinet, a moving component installed at the bottom of the cabinet, and a heat dissipation device installed inside the cabinet.

[0006] As a further description of the above technical solution:

[0007] The maintenance assembly includes maintenance door one, maintenance door two, and maintenance door three. Maintenance door one is rotatably connected to the outer wall of the cabinet on one side, and maintenance door two and maintenance door three are rotatably connected to the other side of the cabinet on one side.

[0008] As a further description of the above technical solution:

[0009] The movable component includes a movable device, the top of which is rotatably connected to the bottom of the cabinet.

[0010] As a further description of the above technical solution:

[0011] The electrical control system includes a helium filling signal acquisition system, a PLC, a serial server, a flow acquisition system, a network system, an industrial computer, and a software control system.

[0012] As a further description of the above technical solution:

[0013] The helium filling signal acquisition system is a customized helium filling signal acquisition system for helium detection systems.

[0014] As a further description of the above technical solution:

[0015] The serial port server is used to facilitate the connection of flow meters with different output interfaces, enabling one-to-one sampling and improving communication efficiency and speed.

[0016] As a further description of the above technical solution:

[0017] The flow acquisition system is a sensor that can withstand high pressure (>4Mpa), and the network system is a PC with dual gigabit Ethernet ports and Cat6 network cable.

[0018] As a further description of the above technical solution:

[0019] The software control system was custom-developed, and an accumulated traffic integration algorithm was designed to achieve rapid response to traffic monitoring needs.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the hardware is custom-developed based on the helium charging flow detection of the evaporator of the air conditioner indoor unit. The hardware integrates a computer, PLC, monitor, alarm system, flow meter, etc., and can be flexibly configured and expanded.

[0022] 2. In this utility model, the hardware can withstand high pressure (typical value 4Mpa), and is customized according to the project application scenario. It is suitable for high-pressure nitrogen, helium filling or recovery and other occasions.

[0023] 3. In this utility model, a special soft protective cover is designed to address installation and protection issues, which provides good protection while facilitating observation of the flow meter. Attached Figure Description

[0024] Figure 1 This is a front view of a high-pressure helium flow detection device proposed in this utility model;

[0025] Figure 2This is a right view of a high-pressure helium flow detection device proposed in this utility model;

[0026] Figure 3 This is a left view of a high-pressure helium flow detection device proposed in this utility model;

[0027] Figure 4 This is a diagram of the electrical control system of a high-pressure helium flow detection device proposed in this utility model.

[0028] Legend:

[0029] 1. Heat dissipation device; 2. Electrical control system; 3. Mobility device; 4. Alarm device; 5. Monitor; 6. Mouse and keyboard; 7. Inspection door one; 8. Inspection door two; 9. Inspection door three; 10. Cabinet. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-4This utility model provides an embodiment of a high-pressure helium flow detection device, including a cabinet 10. The cabinet 10 serves as the main load-bearing structure of the device, housing various functional modules and providing overall protection. A display 5 is fixedly connected to the outer wall of the cabinet 10, displaying flow detection data, alarm information, and device operating status in real time for convenient monitoring and operation by operators. An alarm device 4 is fixedly connected to the top of the cabinet 10, issuing audible and visual alarm signals promptly when the system detects an abnormality, improving system safety and response speed. A mouse and keyboard 6 are fixedly connected to the top of the cabinet 10, allowing operators to set parameters, control, and interact with data in the system software, enhancing operational convenience. Cabinet 10 contains maintenance components for routine maintenance and troubleshooting of internal components, improving maintenance efficiency. Cabinet 10 also houses an electrical control system 2, the core of the entire device, coordinating data communication and control logic between systems to achieve comprehensive management of the flow detection process. A mobility component at the bottom of cabinet 10 provides excellent mobility for flexible deployment in different workstations or application scenarios. Cabinet 10 also includes a heat dissipation device 1 to effectively dissipate heat generated inside, ensuring stable operation of the electrical control system and sensors. The maintenance components include inspection doors 1 (7), 8 (8), and 9 (9), used to separate the internal structure of the equipment. The domain-specific maintenance passage features a rotatable access door 7 on one side, easily opened and closed, primarily for the maintenance of front-facing electrical components. Access doors 8 and 9 are rotatably connected to the other side of cabinet 10, facilitating the maintenance and replacement of rear-facing critical components such as flow sensors and terminal blocks. The mobile assembly includes a mobile device 3, enhancing the device's mobility at the testing site, facilitating temporary deployment and adjustment of testing points. The top of the mobile device 3 is rotatably connected to the bottom of cabinet 10, improving steering flexibility and enhancing the controllability and stability of mobile operations. The electrical control system 2 includes a helium charging signal acquisition system, a PLC, a serial server, a flow acquisition system, a network system, an industrial computer, and a software control system. The system works collaboratively to acquire, convert, transmit, and analyze high-pressure helium flow signals. The helium filling signal acquisition system is customized for helium detection systems, allowing for targeted acquisition of signals during the filling process to ensure timely and specific data collection. A serial port server facilitates connection to flow meters with different output interfaces, enabling compatibility and rapid connection of multiple flow meter models, simplifying wiring complexity. One-to-one sampling improves communication efficiency and speed, effectively enhancing data transmission accuracy and response speed, and avoiding signal congestion or packet loss. The flow acquisition system uses a high-pressure sensor (>4 MPa), suitable for high-pressure helium environments, ensuring data acquisition accuracy and long-term stability. The network system features dual gigabit Ethernet ports on the PC.Category 6 network cables are used to ensure high-speed and stable data transmission links, meeting the requirements for high-speed uploading of large amounts of data and remote control. The software control system is custom-developed, with a customized interface and operating logic tailored to the industry characteristics of helium detection. A cumulative flow integration algorithm is designed to achieve rapid response to flow monitoring needs. This algorithm enables dynamic and accurate monitoring of instantaneous and cumulative flow, meeting the real-time control requirements of high-pressure helium flow.

[0032] Working Principle: When using this high-pressure helium flow detection device, a computer is used as the central control unit, VS2022 as the software platform, and C# as the programming language. The computer communicates with a serial server via a network port, setting the server as a UDP server and each flow meter as a client. A thread sends flow reading commands, listens for return values, and parses the returned data through a protocol, converting it into instantaneous or cumulative flow. The PLC input is used to extract the helium filling signal. This signal was initially obtained by interfacing with the helium detection system manufacturer to extract the control signal of the helium solenoid valve in its control transfer box. This extracted signal serves as the cumulative flow reset signal and is matched with the helium detection system. A green light alternately displays every 300ms to indicate the helium filling process. When the helium filling process ends, the filling time is recorded, and the extracted final flow result is compared with the set cumulative flow. If it is within the range, the PLC outputs a green light control signal, indicating successful helium filling; otherwise, a red light control signal is output, indicating unsuccessful helium filling.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-pressure helium flow detection device, comprising a cabinet (10), characterized in that: A monitor (5) is fixedly connected to the outer wall of the cabinet (10), an alarm device (4) is fixedly connected to the top of the cabinet (10), a mouse and keyboard (6) are fixedly connected to the top of the cabinet (10), a maintenance component is installed inside the cabinet (10), an electrical control system (2) is installed inside the cabinet (10), a moving component is installed at the bottom of the cabinet (10), and a heat dissipation device (1) is installed inside the cabinet (10).

2. The high-pressure helium flow detection device according to claim 1, characterized in that: The maintenance assembly includes maintenance door one (7), maintenance door two (8) and maintenance door three (9). Maintenance door one (7) is rotatably connected to the outer wall of the cabinet (10) on one side, and maintenance door two (8) and maintenance door three (9) are rotatably connected to the other side of the cabinet (10) on one side.

3. The high-pressure helium flow detection device according to claim 1, characterized in that: The moving component includes a moving device (3), the top of which is rotatably connected to the bottom of the cabinet (10).

4. The high-pressure helium flow detection device according to claim 1, characterized in that: The electrical control system (2) includes a helium filling signal acquisition system, a PLC, a serial port server, a flow acquisition system, a network system, an industrial computer, and a software control system.

5. The high-pressure helium flow detection device according to claim 4, characterized in that: The helium filling signal acquisition system is a customized helium filling signal acquisition system for helium detection systems.

6. The high-pressure helium flow detection device according to claim 4, characterized in that: The serial port server is used to facilitate the connection of flow meters with different output interfaces, enabling one-to-one sampling and improving communication efficiency and speed.

7. The high-pressure helium flow detection device according to claim 4, characterized in that: The flow acquisition system is a sensor that can withstand high pressure (>4Mpa), and the network system is a PC with dual gigabit Ethernet ports and Cat6 network cable.

8. The high-pressure helium flow detection device according to claim 4, characterized in that: The software control system was custom-developed, and an accumulated traffic integration algorithm was designed to achieve rapid response to traffic monitoring needs.

Images