Pressure vessel leakage detection device

Abstract

The utility model discloses a pressure vessel leakage detection device comprising a plurality of groups of positioning ring frames which are connected through supporting telescopic connecting rods, and the bottom ends of the positioning ring frames are connected with a bearing ring base; an indicating lamp and an ultrasonic sensor are arranged outside the positioning ring frame; a supporting telescopic positioning rod is arranged inside the positioning ring frame; the bearing ring base is connected with a control box through a supporting rod, a PLC and the like are arranged in the bearing ring base, and the sealing door is provided with a touch screen. The device has the beneficial effects that the ultrasonic sensor realizes high-sensitivity detection; leakage points are accurately positioned by indicator lights; the mobile power supply and the switching power supply provide various power supply modes; the remote monitoring and alarming functions are realized; the supporting telescopic positioning rod and the connecting rod are convenient to position and adjust, and are suitable for cylindrical pressure containers of different specifications.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel testing technology, specifically to a pressure vessel leakage detection device. Background Technology

[0002] In many fields such as petrochemicals, energy storage and transportation, and aerospace, pressure vessels serve as core equipment, undertaking the crucial task of storing and transporting high-temperature, high-pressure, or corrosive media. However, due to their long-term exposure to harsh working environments and the complexity of their structure, pressure vessels are susceptible to leakage. Once a leak occurs, it can lead not only to energy waste and equipment damage, but in severe cases, it can also cause explosions, environmental pollution, and even major safety accidents resulting in casualties.

[0003] Currently, traditional pressure vessel leak detection methods, such as the common hydrostatic testing and bubble observation methods, while relatively low-cost, have many significant drawbacks. Hydrostatic testing consumes large amounts of water, and the subsequent drying process is cumbersome and inefficient. Bubble observation methods are insensitive to minute leaks, especially those in micron-sized pores. Furthermore, neither method can precisely pinpoint the leak location, greatly hindering subsequent maintenance. In emerging fields, such as hydrogen storage tanks and LNG cryogenic containers, where safety standards are more stringent, traditional detection methods are insufficient. Therefore, developing an efficient, accurate, and convenient pressure vessel leak detection device is of significant practical importance. Utility Model Content

[0004] The purpose of this invention is to provide a pressure vessel leakage detection device to solve the problems of low sensitivity, low efficiency, and difficulty in locating leaks in traditional detection methods mentioned in the background art, which cannot meet the stringent safety standards of emerging fields.

[0005] To achieve the above objectives, the present invention employs the following technical means:

[0006] A pressure vessel leak detection device, comprising:

[0007] Multiple sets of positioning ring frames are distributed vertically. Two adjacent sets of positioning ring frames are connected by a support telescopic connecting rod. The positioning ring frame at the bottom is connected to a bearing ring base by a support telescopic connecting rod.

[0008] The outer wall of the positioning ring frame is connected to multiple sets of circumferentially distributed indicator lights and ultrasonic sensors that correspond one-to-one with the multiple sets of indicator lights.

[0009] The inner wall of the positioning ring frame is connected to multiple sets of circumferentially distributed support telescopic positioning rods.

[0010] The support ring base is connected to a control box via a support rod. The opening of the control box is sealed with a control sealing door, and the top of the control box is connected to an audible and visual alarm.

[0011] The control box is equipped with a PLC controller, a wireless transmitter, a power bank, and a switching power supply. The control sealed door is inlaid with a touch screen input device.

[0012] The indicator lights and ultrasonic sensors are connected to the PLC controller via a junction box. The wireless transmitter and touch screen input device are electrically connected to the PLC controller. The portable power supply is connected to the PLC controller via a first circuit breaker. The switching power supply is connected to the PLC controller via a second circuit breaker. The switching power supply is connected to an external power source via a connector.

[0013] Preferably, the indicator light and the corresponding ultrasonic sensor are connected to the positioning ring frame via a mounting box assembly. The mounting box assembly includes a sensing mounting box connected to the positioning ring frame. A sensing mounting support plate is detachably connected to the bottom of the sensing mounting box. The light-emitting end of the indicator light is embedded in the side wall of the sensing mounting box, and the sensing end of the ultrasonic sensor is embedded in the side wall of the sensing mounting support plate.

[0014] Preferably, the supporting telescopic positioning rod includes a supporting positioning fixing rod connected to the positioning ring frame, and a supporting positioning moving rod is threadedly inserted into the end of the supporting positioning fixing rod away from the inner wall of the positioning ring frame. A buffer pressing pad is connected to the end of the supporting positioning moving rod away from the supporting positioning fixing rod.

[0015] Preferably, the junction box includes a junction box body connected to the positioning ring frame, a terminal block connected inside the junction box body, and a wire positioning sleeve connected to the inner wall of the junction box body at the interface of the terminal block body.

[0016] Preferably, the supporting telescopic connecting rod includes a connecting rod body, one end of which is threaded with a supporting connecting hollow rod, the end of the supporting connecting hollow rod away from the connecting rod body is connected to a first connecting end, the other end of the connecting rod body is fixedly connected to a supporting connecting solid rod, and the end of the supporting connecting solid rod away from the connecting rod body is connected to a second connecting end.

[0017] Preferably, the audible and visual alarm is an LTE-1101J audible and visual alarm, the PLC controller is a Siemens S7-200SMART series controller, the wireless transmitter is an XY-MD02 model wireless transmitter, the power bank is a Newman N800 model power bank, the switching power supply is a Mean Well LRS-50-24 switching power supply, the first circuit breaker and the second circuit breaker are both Chint NB1-63 series circuit breakers, and the touch screen input device is a Weintek TK6051IP touch screen input screen.

[0018] Preferably, one side of the control sealing door is hinged to the control box, the other side of the control sealing door is fixed to the control box via a lock body, and a handle is connected to the outer wall of the control sealing door.

[0019] Preferably, the support rod is rotatably connected to the bearing ring base.

[0020] Preferably, the bearing ring base has multiple sets of circumferentially distributed positioning holes.

[0021] This utility model has the following beneficial effects:

[0022] 1. High-sensitivity detection: By capturing the high-frequency sound wave signal generated when a pressure vessel leaks using an ultrasonic sensor, it can detect minute leaks. Compared with traditional detection methods, the sensitivity is greatly improved, and it can effectively detect leaks in micron-sized pores.

[0023] 2. Precisely locate the leak point: Multiple sets of circumferentially distributed ultrasonic sensors work together with corresponding indicator lights. When an ultrasonic sensor in a certain area detects a leak signal, the corresponding indicator light will light up, which can intuitively determine the approximate range of the pressure vessel leak, making it easier to accurately locate the leak point and greatly reducing the difficulty of maintenance.

[0024] 3. Multiple Power Supply Options: The device is equipped with both a portable power supply and a switching power supply. The portable power supply allows for flexible use in environments without external power, facilitating on-site testing; the switching power supply connects to an external power source, meeting the needs of long-term continuous operation and ensuring stable device operation.

[0025] 4. Remote Monitoring and Alarm Functions: The PLC controller determines whether a leak has occurred through threshold comparison or machine learning algorithms. Once a leak is detected, it controls an audible and visual alarm to alert personnel. Simultaneously, a wireless transmitter can send alarm information to a remote monitoring terminal, enabling remote monitoring and facilitating timely intervention to prevent the accident from escalating.

[0026] 5. Convenient positioning and adjustment functions: The telescopic positioning rod facilitates quick positioning and connection between the positioning ring frame and the cylindrical pressure vessel, ensuring the accuracy of the test. The telescopic connecting rod allows operators to easily adjust the distribution position of adjacent sets of positioning ring frames according to the height of the pressure vessel, making it suitable for pressure vessels of different specifications and improving the versatility of the device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the positioning ring frame of this utility model;

[0029] Figure 3 This is a cross-sectional view of the mounting box assembly of this utility model;

[0030] Figure 4 This is a schematic diagram of the control box and the control sealing door of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the telescopic positioning rod of this utility model;

[0032] Figure 6 This is a cross-sectional view of the junction box of this utility model;

[0033] Figure 7 This is a structural schematic diagram of the telescopic connecting rod of this utility model;

[0034] In the attached figures, the following labels are used:

[0035] 1. Positioning ring frame; 2. Induction mounting box; 3. Induction mounting support plate; 4. Ultrasonic sensor; 5. Support telescopic positioning rod; 6. Wiring adapter box; 7. Support telescopic connecting rod; 8. Audible and visual alarm; 9. Control box; 10. PLC controller; 11. Wireless transmitter; 12. Power bank; 13. Wiring plug; 14. Switching power supply; 15. First circuit breaker; 16. Second circuit breaker; 17. Control sealing door; 18. Touch screen input device; 19. Handle; 20. Support rod; 21. Positioning hole; 22. Support ring base; 23. Support positioning fixing rod; 601. Support positioning moving rod; 602. Buffer pressing pad; 603. Junction box body; 701. Wire positioning sleeve; 702. Terminal block; 703. Support connecting hollow rod; 801. First connecting end; 802. Connecting rod body; 803. Support connecting solid rod; 804. Second connecting end; 805. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] Example 1

[0038] like Figure 1-7 As shown, a pressure vessel leakage detection device includes: multiple sets of vertically distributed positioning ring frames 1, two adjacent sets of positioning ring frames 1 are connected by a support telescopic connecting rod 8, and the positioning ring frame 1 at the bottom is connected to a bearing ring base 23 by the support telescopic connecting rod 8.

[0039] The outer wall of the positioning ring frame 1 is connected to multiple sets of circumferentially distributed indicator lights 3 and ultrasonic sensors 5 that correspond one-to-one with the multiple sets of indicator lights 3;

[0040] The inner wall of the positioning ring frame 1 is connected to multiple sets of circumferentially distributed support telescopic positioning rods 6;

[0041] The support ring base 23 is connected to the control box 10 via the support rod 21. The opening of the control box 10 is sealed with a control sealing door 18. The top of the control box 10 is connected to an audible and visual alarm 9.

[0042] The control box 10 is connected to a PLC controller 11, a wireless transmitter 12, a mobile power supply 13, and a switching power supply 15. The control sealing door 18 is embedded with a touch screen input device 19.

[0043] Indicator light 3 and ultrasonic sensor 5 are both connected to PLC controller 11 through junction box 7. Wireless transmitter 12 and touch screen input device 19 are both electrically connected to PLC controller 11. Mobile power supply 13 is connected to PLC controller 11 through first circuit breaker 16. Switching power supply 15 is connected to PLC controller 11 through second circuit breaker 17. Switching power supply 15 is connected to external power supply through connector 14.

[0044] Working principle

[0045] When using this device, first adjust the spacing between two adjacent sets of positioning ring frames 1 by rotating the support telescopic connecting rod 8 according to the height of the pressure vessel. Then, place the positioning ring frame 1 onto the cylindrical pressure vessel and rotate the support telescopic positioning rod 6 to complete the positioning connection between the positioning ring frame 1 and the pressure vessel.

[0046] Choose a suitable power supply method. If there is an external power source on site, plug the connector 14 into the external power source and control the switching power supply 15 to supply power to the PLC controller 11 and other electrical components through the second circuit breaker 17. If there is no external power source on site, control the mobile power supply 13 to supply power to the device through the first circuit breaker 16.

[0047] The PLC controller 11 is configured with parameters such as leakage detection thresholds via the touchscreen input device 19. The ultrasonic sensor 5 captures sound wave signals around the pressure vessel in real time. When a leak occurs, high-frequency sound waves are generated at the leak point. The corresponding ultrasonic sensor 5 transmits the detected signal to the junction box 7, and then to the PLC controller 11. The PLC controller 11 analyzes and judges the received signal using a preset threshold comparison or machine learning algorithm. If a leak signal is detected, the corresponding indicator light 3 illuminates, indicating the approximate location of the leak, and simultaneously triggers the audible and visual alarm 9. Furthermore, the PLC controller 11 also transmits alarm information to a remote monitoring terminal via the wireless transmitter 12 for remote monitoring. Personnel can quickly repair the leak based on the indicator light 3 and the alarm information.

[0048] Example 2

[0049] like Figure 1-7 As shown, a pressure vessel leakage detection device includes: multiple sets of vertically distributed positioning ring frames 1, two adjacent sets of positioning ring frames 1 are connected by a support telescopic connecting rod 8, and the positioning ring frame 1 at the bottom is connected to a bearing ring base 23 by the support telescopic connecting rod 8.

[0050] The outer wall of the positioning ring frame 1 is connected to multiple sets of circumferentially distributed indicator lights 3 and ultrasonic sensors 5 that correspond one-to-one with the multiple sets of indicator lights 3;

[0051] The inner wall of the positioning ring frame 1 is connected to multiple sets of circumferentially distributed support telescopic positioning rods 6;

[0052] The support ring base 23 is connected to the control box 10 via the support rod 21. The opening of the control box 10 is sealed with a control sealing door 18. The top of the control box 10 is connected to an audible and visual alarm 9.

[0053] The control box 10 is connected to a PLC controller 11, a wireless transmitter 12, a mobile power supply 13, and a switching power supply 15. The control sealing door 18 is embedded with a touch screen input device 19.

[0054] Indicator light 3 and ultrasonic sensor 5 are both connected to PLC controller 11 through junction box 7. Wireless transmitter 12 and touch screen input device 19 are both electrically connected to PLC controller 11. Mobile power supply 13 is connected to PLC controller 11 through first circuit breaker 16. Switching power supply 15 is connected to PLC controller 11 through second circuit breaker 17. Switching power supply 15 is connected to external power supply through connector 14.

[0055] Indicator light 3 and its corresponding ultrasonic sensor 5 are connected to positioning ring frame 1 through mounting box assembly. Mounting box assembly includes induction mounting box 2 connected to positioning ring frame 1. Induction mounting support plate 4 is detachably connected to the bottom of induction mounting box 2. The light-emitting end of indicator light 3 is embedded and connected to the side wall of induction mounting box 2. The sensing end of ultrasonic sensor 5 is embedded and connected to the side wall of induction mounting support plate 4.

[0056] The beneficial effects of the above settings are:

[0057] Facilitates independent maintenance of components and reduces repair costs: The sensor mounting support plate 4 and the bottom of the sensor mounting box 2 are detachably connected. When the ultrasonic sensor 5 malfunctions, the sensor mounting support plate 4 can be directly removed for repair or replacement without disassembling the entire sensor mounting box 2 and other components on the positioning ring frame 1. Similarly, the indicator light 3 is embedded in the side wall of the sensor mounting box 2. If repair is required, only the indicator light 3 needs to be operated, avoiding the impact of a single component failure on the overall structure, greatly shortening maintenance time and reducing labor costs.

[0058] To ensure detection and indication accuracy and improve equipment reliability: The light-emitting end of indicator light 3 is embedded and connected to the side wall of the induction mounting box 2. This fixing method ensures that the light-emitting direction of indicator light 3 is always stable, avoiding deviation of the indication range due to loosening, allowing staff to accurately determine the leakage area through indicator light 3; The sensing end of ultrasonic sensor 5 is embedded and connected to the side wall of induction mounting support plate 4, which ensures that its sensing angle and position are fixed, reduces signal capture deviation caused by vibration or displacement, and ensures that ultrasonic sensor 5 efficiently captures high-frequency sound waves during leakage, improving the accuracy of detection results.

[0059] Strengthening the overall structure and adapting to industrial environments: The sensor mounting box 2 is directly connected to the positioning ring frame 1, integrating the indicator light 3, ultrasonic sensor 5, and sensor mounting support plate 4 into an independent mounting unit, making the connection between each component and the positioning ring frame 1 more stable. This modular structure can resist interference such as vibration and impact in industrial environments, prevent components from loosening due to external forces, and ensure the long-term stable operation of the equipment in complex environments.

[0060] The support telescopic positioning rod 6 includes a support positioning fixing rod 601 connected to the positioning ring frame 1. The end of the support positioning fixing rod 601 away from the inner wall of the positioning ring frame 1 is threaded with a support positioning moving rod 602. The end of the support positioning moving rod 602 away from the support positioning fixing rod 601 is connected with a buffer pressing pad 603.

[0061] The beneficial effects of the above settings are:

[0062] Adaptable to different pressure vessels, enhancing the device's versatility: The support positioning moving rod 602 and the support positioning fixed rod 601 are connected by a threaded connection. The overall length of the support telescopic positioning rod 6 can be flexibly adjusted by rotating the support positioning moving rod 602. This allows the positioning ring frame 1 to adapt to cylindrical pressure vessels of different diameters, eliminating the need to design separate positioning structures for different vessel specifications, significantly improving the device's applicability and reducing equipment procurement costs.

[0063] To ensure stable positioning and accurate testing: After the support positioning moving rod 602 is adjusted to the appropriate length, the self-locking characteristic of the threaded connection keeps it relatively fixed with the support positioning fixed rod 601, preventing loosening due to vibration or other factors during testing. Simultaneously, the buffer pressing pad 603 at the end of the support positioning moving rod 602 tightly adheres to the surface of the pressure vessel, increasing contact friction and further enhancing the connection stability between the positioning ring frame 1 and the container. This prevents displacement of the device during testing, ensuring that the ultrasonic sensor 5 and other testing components remain in the preset testing position, thus guaranteeing the reliability of the testing data.

[0064] Protecting the pressure vessel surface and reducing equipment wear: The cushioning pressure pad 603 is typically made of elastic materials such as rubber. When the supporting positioning moving rod 602 presses against the pressure vessel, it effectively cushions the force between the two, preventing scratches, indentations, and other damage to the vessel surface caused by rigid contact. Especially for pressure vessels with specially treated surfaces or softer materials, this protective effect can reduce equipment maintenance costs and extend the service life of the pressure vessel.

[0065] The junction box 7 includes a junction box body 701 connected to the positioning ring frame 1. A terminal block 703 is connected inside the junction box body 701. A wire positioning sleeve 702 connected to the inner wall of the junction box body 701 is provided at the interface of the terminal block 703.

[0066] The beneficial effects of the above settings are:

[0067] Standardized wiring connections and improved cabling neatness: The junction box 701 provides a closed space for wiring connections. The internal terminal block 703 centrally manages the wiring between the indicator light 3, ultrasonic sensor 5, and PLC controller 11, avoiding multiple sets of wires being directly exposed and tangled. The wire positioning sleeve 702 can fix the wires connected to the terminal block 703 interface, preventing the wires from shifting due to external pulling, making the wiring layout in the entire wiring area more orderly and facilitating later inspection and organization of the wiring.

[0068] To ensure stable signal transmission and reduce potential faults: The interface design of terminal block 703 ensures a secure wiring connection, reducing the risk of signal transmission interruption or distortion due to poor contact, and guaranteeing stable transmission of leakage signals collected by ultrasonic sensor 5 and control signals from indicator light 3. Line positioning sleeve 702 provides excellent protection, preventing damage to line joints due to shaking or friction, further reducing the occurrence of wiring faults and improving the overall operational stability of the device.

[0069] Facilitating circuit maintenance and expansion, and improving operational efficiency: When it is necessary to inspect the circuit of indicator light 3 or ultrasonic sensor 5, the operator can directly operate at the terminal block 703 inside the junction box 701 without having to disassemble the circuit of the entire positioning ring frame 1, thus simplifying the maintenance process. Furthermore, if additional detection components are needed later, the terminal block 703 provides additional interface positions. With the auxiliary fixation of the line positioning sleeve 702, circuit expansion can be quickly completed, improving the adaptability and operational efficiency of the device.

[0070] Enhanced protection for complex environments: The junction box 701 provides protection for the internal terminal blocks 703, wire positioning sleeves 702, and wire connectors, preventing the intrusion of dust, moisture, and other impurities in the industrial environment, and reducing the corrosive effects of these factors on the wiring and connecting components. This protection effectively extends the service life of the junction box 7, ensuring its normal operation in humid, dusty, and other complex environments, and guaranteeing the long-term reliable operation of the device.

[0071] The telescopic support rod 8 includes a connecting rod body 803. One end of the connecting rod body 803 is threaded with a supporting connecting hollow rod 801. The end of the supporting connecting hollow rod 801 away from the connecting rod body 803 is connected to a first connecting end 802. The other end of the connecting rod body 803 is fixedly connected to a supporting connecting solid rod 804. The end of the supporting connecting solid rod 804 away from the connecting rod body 803 is connected to a second connecting end 805.

[0072] The beneficial effects of the above settings are:

[0073] Flexible length adjustment to adapt to pressure vessels of different heights: The hollow support rod 801 and the connecting rod body 803 are connected by a threaded sleeve. By rotating the hollow support rod 801, the sleeve length between it and the connecting rod body 803 can be changed, thereby adjusting the overall length of the telescopic support rod 8. This allows the spacing between adjacent sets of positioning ring frames 1 to be flexibly adjusted according to the height of the pressure vessel. It also adapts to the distance between the bottommost positioning ring frame 1 and the bearing ring base 23, meeting the testing requirements of cylindrical pressure vessels of different specifications and improving the versatility of the device.

[0074] To ensure a stable connection and structural integrity: the first connecting end 802 and the second connecting end 805 are respectively used to connect to the positioning ring frame 1 or the bearing ring base 23, increasing the contact area between the supporting telescopic connecting rod 8 and other components, making the connection more secure. The supporting connecting solid rod 804 fixed to the other end of the connecting rod body 803 enhances the structural strength of the rod end. Combined with the self-locking characteristics of the threaded connection, it can effectively resist external impacts and prevent the positioning ring frame 1 from shifting due to loosening during testing, thus ensuring the structural stability of the entire device.

[0075] The installation and disassembly process is simplified, improving operational convenience: the threaded connection eliminates the need for complex tools to adjust and fix the length of the supporting hollow rod 801 and the connecting rod body 803. The first connecting end 802 and the second connecting end 805 also facilitate quick docking or separation with the positioning ring frame 1 and the bearing ring base 23. This simplifies the installation, disassembly, and transportation of the device, reduces operator time and physical exertion, and improves on-site deployment efficiency.

[0076] Optimized stress structure and extended service life: The solid support rod 804 has higher bending and shear resistance than the hollow structure. Fixing this structure to one end of the connecting rod 803 balances the forces on both ends of the telescopic connecting rod 8, preventing deformation due to long-term load. Simultaneously, the threaded connection provides uniform stress distribution, reducing localized wear and extending the service life of the telescopic connecting rod 8, ensuring long-term stable operation of the device.

[0077] Example 3

[0078] like Figure 1-7 As shown, a pressure vessel leakage detection device includes: multiple sets of vertically distributed positioning ring frames 1, two adjacent sets of positioning ring frames 1 are connected by a support telescopic connecting rod 8, and the positioning ring frame 1 at the bottom is connected to a bearing ring base 23 by the support telescopic connecting rod 8.

[0079] The outer wall of the positioning ring frame 1 is connected to multiple sets of circumferentially distributed indicator lights 3 and ultrasonic sensors 5 that correspond one-to-one with the multiple sets of indicator lights 3;

[0080] The inner wall of the positioning ring frame 1 is connected to multiple sets of circumferentially distributed support telescopic positioning rods 6;

[0081] The support ring base 23 is connected to the control box 10 via the support rod 21. The opening of the control box 10 is sealed with a control sealing door 18. The top of the control box 10 is connected to an audible and visual alarm 9.

[0082] The control box 10 is connected to a PLC controller 11, a wireless transmitter 12, a mobile power supply 13, and a switching power supply 15. The control sealing door 18 is embedded with a touch screen input device 19.

[0083] Indicator light 3 and ultrasonic sensor 5 are both connected to PLC controller 11 through junction box 7. Wireless transmitter 12 and touch screen input device 19 are both electrically connected to PLC controller 11. Mobile power supply 13 is connected to PLC controller 11 through first circuit breaker 16. Switching power supply 15 is connected to PLC controller 11 through second circuit breaker 17. Switching power supply 15 is connected to external power supply through connector 14.

[0084] The sound and light alarm 9 is an LTE-1101J sound and light alarm; the PLC controller 11 is a Siemens S7-200SMART series controller; the wireless transmitter 12 is an XY-MD02 model wireless transmitter; the power bank 13 is a Newman N800 model power bank; the switching power supply 15 is a Mean Well LRS-50-24 switching power supply; the first circuit breaker 16 and the second circuit breaker 17 are both Chint NB1-63 series circuit breakers; and the touch screen input device 19 is a Weintek TK6051IP touch screen input screen.

[0085] The beneficial effects of the above settings are:

[0086] Audible and visual alarm 9: LTE-1101J model is selected. This model of audible and visual alarm adopts an integrated design, with a sound intensity of up to 110dB. The alarm light is a red LED flashing light. It is small in size, easy to install, and can clearly transmit alarm signals over long distances, making it suitable for safety warnings in industrial sites.

[0087] PLC Controller 11: Siemens S7-200SMART series is selected. This model of PLC controller has multiple inputs and outputs, supports various expansion modules, has fast operation speed, and flexible programming. It can meet the various functional requirements of the device, such as processing ultrasonic sensor signals, controlling indicator lights and alarms, and wireless transmission. It is widely used in the field of industrial automation and has high stability.

[0088] Wireless Transmitter 12: Model XY-MD02 is selected. This wireless transmitter is based on the 433MHz wireless frequency band, with a transmission distance of up to 1000 meters. It adopts FSK modulation, has strong anti-interference capabilities, supports TTL level interface, and can be directly connected to PLC controller to realize wireless transmission of alarm information and other data. It is suitable for short-range wireless communication in industrial sites.

[0089] Power Bank 13: The Newman N800 model is selected. This power bank has a capacity of 8000mAh, an output voltage of 5V / 2A, and features overcharge, over-discharge, and short-circuit protection. It is of moderate size, making it easy to install in the control box, and can provide stable power support for the device in the absence of an external power source, meeting the power supply needs of short-term on-site testing.

[0090] Switching power supply 15: Select Mean Well LRS-50-24 model. This switching power supply has an input voltage of 100-240V AC, an output voltage of 24V DC, an output current of 2.1A, and a power of 50W. It features high efficiency, low power consumption, overcurrent, overvoltage, and short-circuit protection, and can stably provide DC power to components such as PLC controllers. It is suitable for long-term use in industrial environments.

[0091] The first circuit breaker 16 and the second circuit breaker 17 are selected from the Chint NB1-63 series 1P 10A model. These circuit breakers have overload and short-circuit protection functions, high breaking capacity, reliable operation, and can effectively control the circuit connection and disconnection between the mobile power supply and the PLC controller, ensuring circuit safety.

[0092] Touchscreen Input Device 19: Weintek TK6051IP model is selected. This touchscreen is a 5.6-inch true-color LCD display with a resolution of 320×240. It supports RS485 communication interface and can communicate directly with Siemens S7-200SMART series PLC. The user interface is user-friendly, making it easy for operators to set parameters and monitor equipment status.

[0093] One side of the control sealing door 18 is hinged to the control box 10, and the other side of the control sealing door 18 is fixed to the control box 10 via a lock body. A handle 20 is connected to the outer wall of the control sealing door 18.

[0094] The beneficial effects of the above settings are:

[0095] Facilitating operation and maintenance, and enhancing convenience: One side of the control sealing door 18 is hinged to the control box 10, allowing the door to rotate flexibly around the hinge axis. Combined with the handle 20 on the outer wall, operators can easily open or close the control sealing door 18. This facilitates the inspection, debugging, or replacement of components such as the PLC controller 11 and wireless transmitter 12 inside the control box 10, eliminating the need for complex disassembly steps and reducing operation time and labor costs.

[0096] To ensure sealing and protection performance and protect internal components: The other side of the control sealing door 18 is fixedly connected to the control box 10 through a lock body. When locked, it can ensure that the door body and the control box 10 fit tightly, forming a good sealing effect. This effectively prevents external dust, moisture, oil and other impurities from entering the control box 10, avoiding corrosion or short circuit damage to the internal precision electronic components, extending the service life of the components, and ensuring the stable operation of the device.

[0097] Enhanced security and prevention of misoperation: The lock body can lock the control sealing door 18 to prevent unauthorized personnel from opening the control box 10 at will, avoid accidental contact with internal circuits or adjustment of key parameters, reduce the risk of device failure or abnormal test data caused by human error, and ensure the safety of equipment operation and the reliability of test results.

[0098] The robust structure is adapted to industrial environments: the hinged connection ensures the stability of the control door 18's rotation, while the fixed lock body enhances the strength of the connection between the door and the control box 10. Even in industrial environments with vibrations or collisions, it can prevent the door from opening accidentally or becoming loose. The handle 20 not only facilitates operation but also strengthens the structural strength of the door edges to a certain extent, making the overall structure more adaptable to complex industrial environments.

[0099] The support rod 21 is rotatably connected to the bearing ring base 23.

[0100] The beneficial effects of the above settings are:

[0101] Enhancing operational flexibility and facilitating human-machine interaction: The support rod 21 is rotatably connected to the bearing ring base 23, allowing the control box 10 to rotate flexibly around the connection point between the support rod 21 and the bearing ring base 23. When operating the touch screen input device 19 on the control sealing door 18, operators can adjust the angle of the control box 10 according to their own position and operating habits, avoiding inconvenience caused by a fixed position. This is especially beneficial in scenarios where the installation position of the bearing ring base 23 is limited or the surrounding space is narrow, significantly improving the convenience of human-machine interaction.

[0102] Adapting to different installation environments and enhancing deployment adaptability: In industrial sites, the spatial layout around pressure vessels may be complex and diverse. After the bearing ring base 23 is fixed through the positioning hole 22, if the position of the control box 10 conflicts with surrounding equipment or obstacles, the orientation of the control box 10 can be adjusted by rotating the support rod 21 to avoid obstacles. There is no need to disassemble and adjust the installation position of the bearing ring base 23 again, which improves the deployment flexibility and adaptability of the device in complex environments.

[0103] The bearing ring base 23 has multiple sets of circumferentially distributed positioning holes 22.

[0104] The beneficial effects of the above settings are:

[0105] To ensure stable installation and overall device stability, multiple sets of circumferentially distributed positioning holes 22 on the bearing ring base 23 can be tightly connected to the ground, operating platform, or other fixed foundations via bolts, positioning pins, or other connecting components. This circumferential design ensures that the bearing ring base 23 is subjected to uniform force, effectively resisting the weight of the device itself and external forces such as vibration and impact that may occur during the detection process. This prevents the device from tilting or shifting, ensuring that components such as the positioning ring frame 1 and control box 10 are always in their preset working positions, providing a fundamental guarantee for the accuracy of leak detection.

[0106] Adaptable to various installation scenarios, enhancing deployment flexibility: The circumferential distribution of multiple positioning holes 22 allows staff to select appropriate connection points based on on-site installation conditions. Whether on a flat ground, equipment bracket, or other irregular support surface, the load-bearing ring base 23 can be stably fixed by adjusting the position of the positioning holes 22 through which the connectors pass, without requiring significant modifications to the device due to installation location limitations, thus enhancing the device's deployment adaptability in different industrial scenarios.

[0107] Example 4

[0108] I. Device Assembly

[0109] Positioning ring frame assembly installation: Connect the five sets of positioning ring frames 1 via supporting telescopic connecting rods 8. The supporting telescopic connecting rods 8 are composed of connecting rod bodies 803, supporting connecting hollow rods 801, etc. By rotating the supporting connecting hollow rods 801, adjust the spacing between adjacent positioning ring frames 1 to 50cm, and set the distance between the bottommost positioning ring frame 1 and the bearing ring base 23 to 80cm.

[0110] Installation of detection components: On the outer wall of each positioning ring frame 1, the indicator light 3 and ultrasonic sensor 5 corresponding to the LTE-1101J model audible and visual alarm 9 are installed through the mounting box assembly consisting of the induction mounting box 2 and the induction mounting support plate 4. Twelve sets are evenly distributed on each positioning ring frame 1, and the indicator light 3 corresponds one-to-one with the ultrasonic sensor 5.

[0111] Control box connection: The bearing ring base 23 is connected to the control box 10 through a rotatable support rod 21. The control box 10 is equipped with a Siemens S7-200 SMART PLC controller 11, an XY-MD02 wireless transmitter 12, a Newman N800 power bank 13, and a Mean Well LRS-50-24 switching power supply 15. The control box 10 has a control sealing door 18 with a Weintek TK6051IP touch screen input device 19 installed at the opening. The control sealing door 18 is hinged on one side and fixed to the control box 10 on the other side by a lock body. A handle 20 is installed on the outer wall.

[0112] Wiring Connections: Indicator light 3 and ultrasonic sensor 5 are connected to PLC controller 11 via junction box 7. The terminal block 703 and wire positioning sleeve 702 inside junction box 7 are designed to conform to wiring specifications. Power supply 13 is connected to PLC controller 11 via Chint NB1-631P 10A first circuit breaker 16. Switching power supply 15 is connected to PLC controller 11 via second circuit breaker 17 of the same series. Switching power supply 15 is also connected to an external 220V power supply via connector 14.

[0113] II. On-site deployment

[0114] Device fixing: Place the bearing ring base 23 next to a cylindrical pressure vessel with a diameter of 1.2m, and fix it to the ground with expansion bolts through the positioning holes 22 on the bearing ring base 23.

[0115] Positioning adjustment: Rotate the support positioning moving rod 602 of the support telescopic positioning rod 6 to make the buffer pressing pad 603 fit tightly against the surface of the pressure vessel, ensuring that the positioning ring frame 1 is coaxial with the pressure vessel, and adjust the extension length of each set of support telescopic positioning rods 6 to 15cm.

[0116] III. Debugging and Operation

[0117] Parameter settings: Open the control sealing door 18, input parameters to the PLC controller 11 through the Weintek TK6051IP touch screen input device 19, set the leakage judgment threshold of the ultrasonic sensor 5 to 0.8V, and set the alarm delay time of the audible and visual alarm 9 to 3s.

[0118] Power supply selection: There is an external power supply on site. Insert the wiring plug 14 of the switching power supply 15 into the external power supply, close the second circuit breaker 17, and the switching power supply 15 will supply power to the device. The mobile power supply 13 will serve as a backup power supply, and the first circuit breaker 16 will be in the open state.

[0119] Detection and Operation: Ultrasonic sensor 5 captures sound wave signals around the pressure vessel in real time. When a leak occurs at a certain part of the pressure vessel, the corresponding ultrasonic sensor 5 detects high-frequency sound waves and transmits the signal to the PLC controller 11. The Siemens S7-200SMART PLC controller 11 analyzes and determines the leak, controlling the corresponding indicator light 3 to illuminate, and simultaneously triggering the LTE-1101J audible and visual alarm 9 to emit a 110dB sound and a red flashing light. The XY-MD02 wireless transmitter 12 sends the alarm information to the remote monitoring terminal. Based on the indicator light 3 and the alarm information, personnel quickly locate the leak point and take appropriate action.

[0120] IV. Response to Special Scenarios

[0121] When there is no external power supply on site, disconnect the second circuit breaker 17 and close the first circuit breaker 16. Power is supplied by the Newman N800 mobile power supply 13, which can support the device to work continuously for about 8 hours to meet temporary testing needs. If the operating position of the control box 10 is restricted, the support rod 21 can be rotated to adjust the angle of the control box 10, making it convenient to operate via the touch screen input device 19.

[0122] The examples provided in this utility model are not intended to limit the implementation methods. Those skilled in the art will recognize that various variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A pressure vessel leakage detection device, characterized in that, include: Multiple sets of positioning ring frames (1) are distributed vertically. Two adjacent sets of positioning ring frames (1) are connected by a support telescopic connecting rod (8). The positioning ring frame (1) at the bottom is connected to a bearing ring base (23) by the support telescopic connecting rod (8). The outer wall of the positioning ring frame (1) is connected to multiple sets of circumferentially distributed indicator lights (3) and ultrasonic sensors (5) that correspond one-to-one with the multiple sets of indicator lights (3). The inner wall of the positioning ring frame (1) is connected to multiple sets of circumferentially distributed support telescopic positioning rods (6); The bearing ring base (23) is connected to the control box (10) via the support rod (21). The opening of the control box (10) is sealed with a control sealing door (18). The top of the control box (10) is connected to an audible and visual alarm (9). The control box (10) is connected to a PLC controller (11), a wireless transmitter (12), a mobile power supply (13), and a switching power supply (15). The control sealing door (18) is inlaid with a touch screen input device (19). The indicator light (3) and ultrasonic sensor (5) are connected to the PLC controller (11) through the junction box (7). The wireless transmitter (12) and touch screen input device (19) are electrically connected to the PLC controller (11). The mobile power supply (13) is connected to the PLC controller (11) through the first circuit breaker (16). The switching power supply (15) is connected to the PLC controller (11) through the second circuit breaker (17). The switching power supply (15) is connected to an external power source through the connector (14).

2. The pressure vessel leakage detection device according to claim 1, characterized in that, The indicator light (3) and the corresponding ultrasonic sensor (5) are connected to the positioning ring frame (1) through the mounting box assembly. The mounting box assembly includes a sensing mounting box (2) connected to the positioning ring frame (1). The bottom of the sensing mounting box (2) is detachably connected to a sensing mounting support plate (4). The light-emitting end of the indicator light (3) is embedded in the side wall of the sensing mounting box (2), and the sensing end of the ultrasonic sensor (5) is embedded in the side wall of the sensing mounting support plate (4).

3. The pressure vessel leakage detection device according to claim 1, characterized in that, The support telescopic positioning rod (6) includes a support positioning fixing rod (601) connected to the positioning ring frame (1). The end of the support positioning fixing rod (601) away from the inner wall of the positioning ring frame (1) is threaded with a support positioning moving rod (602). The end of the support positioning moving rod (602) away from the support positioning fixing rod (601) is connected with a buffer pressing pad (603).

4. The pressure vessel leakage detection device according to claim 1, characterized in that, The junction box (7) includes a junction box body (701) connected to the positioning ring frame (1), a terminal block (703) is connected inside the junction box body (701), and a wire positioning sleeve (702) connected to the inner wall of the junction box body (701) is provided at the interface of the terminal block (703).

5. The pressure vessel leakage detection device according to claim 1, characterized in that, The supporting telescopic connecting rod (8) includes a connecting rod body (803), one end of which is threaded with a supporting connecting hollow rod (801), the end of the supporting connecting hollow rod (801) away from the connecting rod body (803) is connected to a first connecting end (802), the other end of the connecting rod body (803) is fixedly connected to a supporting connecting solid rod (804), and the end of the supporting connecting solid rod (804) away from the connecting rod body (803) is connected to a second connecting end (805).

6. The pressure vessel leakage detection device according to claim 1, characterized in that, The sound and light alarm (9) is an LTE-1101J sound and light alarm, the PLC controller (11) is a Siemens S7-200SMART series controller, the wireless transmitter (12) is an XY-MD02 model wireless transmitter, the mobile power supply (13) is a Newman N800 model mobile power supply, the switching power supply (15) is a Mean Well LRS-50-24 switching power supply, the first circuit breaker (16) and the second circuit breaker (17) are both Chint NB1-63 series circuit breakers, and the touch screen input device (19) is a Weintek TK6051IP touch screen input screen.

7. The pressure vessel leakage detection device according to claim 1, characterized in that, One side of the control sealing door (18) is hinged to the control box (10), and the other side of the control sealing door (18) is fixed to the control box (10) by a lock body. A handle (20) is connected to the outer wall of the control sealing door (18).

8. A pressure vessel leakage detection device according to claim 1, characterized in that, The support rod (21) is rotatably connected to the bearing ring base (23).

9. A pressure vessel leakage detection device according to claim 1, characterized in that, The bearing ring base (23) has multiple sets of circumferentially distributed positioning holes (22).

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