Radiator corrosion leakage self-adaptive plugging clamp based on differential pressure induction

Abstract

The invention provides a radiator corrosion leakage self-adaptive plugging clamp based on differential pressure induction, and belongs to the technical field of radiator maintenance. Comprising a clamp main body, a differential pressure sensing module, a self-adaptive driving module and a plugging execution module, the clamp body is used for being detachably and fixedly matched with a to-be-plugged area of the radiator, the pressure difference sensing module is embedded in the clamp body, and the sensing section of the pressure difference sensing module faces the wall face of the radiator and is used for detecting the pressure difference value inside and outside the radiator in real time. The device has the beneficial effects that the internal and external pressure difference of the radiator is monitored in real time through the pressure difference sensing module, the pressure change caused by corrosion leakage can be quickly captured, and the problem of leakage discovery lag caused by manual inspection in a traditional plugging mode is solved; and meanwhile, the self-adaptive driving module can automatically drive the plugging execution module to move according to the pressure difference signal, the arc-shaped end face and the annular sealing protrusion of the elastic plugging head are matched, tight attachment and gap filling of leakage points are achieved, and manual repeated debugging is not needed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of radiator maintenance, and particularly relates to a radiator corrosion leakage self-adaptive plugging clamp based on pressure difference induction. BACKGROUND

[0002] As a core heat exchange component in industrial production and civil heating, the radiator is long-term in complex working conditions of high temperature, high pressure and medium corrosion, and its pipe wall is prone to leakage defects due to problems such as electrochemical corrosion and erosion wear. The current treatment methods for radiator corrosion leakage mainly include two types: one is to stop and disassemble for welding repair or component replacement. Although this method is complete in repair, it needs to interrupt the equipment operation, resulting in production stagnation or heating interruption, and causing significant economic losses. The other is to use temporary plugging means, such as manual fastening type clamp and sealant daubing. The manual clamp needs to rely on the experience of the operator to judge the leakage position and repeatedly adjust the fastening force, which not only has low plugging efficiency, but also is difficult to adapt to radiators of different diameters, and has poor sealing effect on irregular leakage points. The sealant has the problems of long curing time, insufficient temperature and pressure resistance, and easy failure under the action of high temperature medium, which cannot meet the rapid processing demand of emergency leakage.

[0003] The existing temporary plugging device generally lacks real-time monitoring capability for the leakage state, and cannot timely sense the change of plugging effect, often resulting in secondary leakage due to loose sealing or medium pressure fluctuation. At the same time, different specifications of radiators need to be equipped with various types of plugging tools, which increases the equipment maintenance cost and inventory pressure. Therefore, it is a key requirement to develop an emergency treatment device that can realize automatic induction of leakage, self-adaptive plugging and strong adaptability, which is of great significance to improve the stability of equipment operation and reduce the maintenance cost. SUMMARY

[0004] The technical problem to be solved by the application is poor plugging effect and troublesome operation. In view of the deficiencies in the prior art, the application provides a radiator corrosion leakage self-adaptive plugging clamp based on pressure difference induction.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is: a radiator corrosion leakage self-adaptive plugging clamp based on differential pressure sensing, comprising a clamp main body, a differential pressure sensing module, a self-adaptive driving module and a plugging execution module; the clamp main body is used to form a detachable fixed fit with the radiator area to be plugged; the differential pressure sensing module is embedded in the clamp main body and its sensing section faces the radiator wall surface, for real-time detection of the pressure difference between the inside and outside of the radiator; the self-adaptive driving module is electrically connected with the differential pressure sensing module, the plugging execution module is drivingly connected with the self-adaptive driving module, and the self-adaptive driving module can drive the plugging execution module to move towards the radiator leakage point and form a sealed fit according to the pressure difference value signal output by the differential pressure sensing module.

[0006] Further, the clamp main body comprises two symmetrical arc-shaped clamping arms and an adjusting and locking assembly connected to the end portions of the two arc-shaped clamping arms, the inner side walls of the two arc-shaped clamping arms are each provided with an elastic buffer layer, the adjusting and locking assembly comprises two clamping plates, the outer portion of the upper clamping plate is provided with a bidirectional screw rod extending to the outer portion of the lower clamping plate, the surface of the bidirectional screw rod is threadedly connected with a nut, and the end portions of the two arc-shaped clamping arms are rotationally connected with the nut, so that the distance between the two arc-shaped clamping arms can be adjusted by rotating the bidirectional screw rod to adapt to radiators of different diameters.

[0007] Further, the differential pressure sensing module comprises two pressure sensors and a signal processing unit, one of the pressure sensors is an internal pressure sensor for detecting the internal medium pressure of the radiator, and its sensing end extends to the inside of the radiator through a guide hole formed in the clamp main body; the other pressure sensor is an external pressure sensor for detecting the external environmental pressure of the radiator, and its sensing end is exposed outside the clamp main body; the signal processing unit is electrically connected with the two pressure sensors respectively, for calculating the difference between the detection values of the two pressure sensors and outputting a differential pressure signal.

[0008] Further, the self-adaptive driving module comprises a micro hydraulic pump, an electromagnetic reversing valve and a hydraulic telescopic cylinder, the micro hydraulic pump is electrically connected with the signal processing unit, the electromagnetic reversing valve is in communication with the micro hydraulic pump and the hydraulic telescopic cylinder respectively, the cylinder body of the hydraulic telescopic cylinder is fixed in the middle portion of the arc-shaped clamping arm, and the piston rod end portion is fixedly connected with the plugging execution module; the signal processing unit can control the start and stop of the micro hydraulic pump and the spool reversing of the electromagnetic reversing valve according to the differential pressure signal, so as to drive the hydraulic telescopic cylinder to move the plugging execution module.

[0009] Further, the plugging execution module comprises a plugging seat, an elastic plugging head and a pressure feedback submodule, the plugging seat is fixedly connected with the piston of the hydraulic telescopic cylinder, the elastic plugging head is integrally formed with the side of the plugging seat away from the piston rod, and the end face of the elastic plugging head is arc-shaped and adapted to the wall surface of the radiator; the pressure feedback submodule is embedded in the elastic plugging head, used for detecting the fitting pressure of the elastic plugging head and the wall surface of the radiator and feeding back the pressure signal to the signal processing unit.

[0010] Further, a pre-warning module is further included, the pre-warning module is electrically connected with the pressure difference sensing module, when the pressure value detected by the pressure difference sensing module is greater than a preset threshold value, the pre-warning module sends an audible and light pre-warning signal; the pre-warning module further comprises an LED warning lamp and a buzzer, and the LED warning lamp and the buzzer are embedded in the outer side wall of the clamp main body.

[0011] Further, the inner side wall of the arc-shaped clamp arm is further provided with a positioning sensor, the positioning sensor is electrically connected with the signal processing unit, used for detecting the fitting degree of the arc-shaped clamp arm and the wall surface of the radiator, when the fitting degree is lower than a preset value, the signal processing unit can control the pre-warning module to send a positioning abnormal signal.

[0012] Further, the outer side of the hydraulic telescopic cylinder is provided with a dustproof protective sleeve, the dustproof protective sleeve adopts an extendable bellows structure, one end of the dustproof protective sleeve is sealingly connected with the inner side wall of the arc-shaped clamp arm, and the other end of the dustproof protective sleeve is sealingly connected with the outer side wall of the plugging seat, used for preventing dust and medium from entering the inside of the hydraulic telescopic cylinder.

[0013] Further, the end face of the elastic plugging head is provided with an annular sealing protrusion, the annular sealing protrusion is arranged along the edge of the end face of the elastic plugging head, and the interface of the annular sealing protrusion is triangular; when the elastic plugging head is fitted with the wall surface of the radiator, the annular sealing protrusion can be elastically deformed and embedded in the corrosion gap of the wall surface of the radiator.

[0014] Further, the outer side wall of the clamp main body is further provided with a charging interface and an electric quantity display lamp, a lithium battery is embedded in the inside of the clamp main body, the lithium battery is electrically connected with the pressure difference sensing module, the self-adaptive driving module, the plugging execution module and the pre-warning module respectively, used for providing working power supply for the modules; the charging interface is electrically connected with the lithium battery, used for charging the lithium battery, and the electric quantity display lamp is used for displaying the residual electric quantity of the lithium battery.

[0015] Compared with the prior art, the present application has the following advantages: 1. This invention uses a differential pressure sensing module to monitor the pressure difference between the inside and outside of the radiator in real time, which can quickly capture pressure changes caused by corrosion leakage, avoiding the problem of delayed leakage detection caused by manual inspection in traditional sealing methods; at the same time, the adaptive drive module can automatically drive the sealing execution module to move according to the differential pressure signal, and with the arc-shaped end face and annular sealing protrusion of the elastic sealing head, it can achieve a tight fit and gap filling of the leakage point, without the need for repeated manual adjustments. It is especially suitable for emergency handling of sudden radiator leakage in industrial scenarios, effectively shortening the sealing time, reducing media waste and environmental risks, and further realizing rapid and accurate response and adaptive sealing of leakage, which greatly improves the efficiency of emergency handling.

[0016] 2. The clamp body of this invention adopts a symmetrical arc-shaped clamping arm structure with bidirectional screw adjustment. The clamping arm spacing can be flexibly adjusted by rotating the screw to adapt to radiator pipes of different diameters. There is no need to equip a separate sealing device for different specifications of radiators, which improves the versatility of the device. The elastic buffer layer on the inner side of the arc-shaped clamping arm works in conjunction with the positioning sensor to ensure stable contact between the clamping arm and the radiator wall, and can promptly report positioning abnormalities and issue warnings to avoid sealing failure due to unstable clamp fixation. In addition, the temperature-resistant and corrosion-resistant elastic sealing head, the dustproof protective cover of the hydraulic telescopic cylinder, and the independent lithium battery power supply design extend the service life of the device under complex working conditions, reduce maintenance frequency, and reduce long-term use costs. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Figure 1 : Schematic diagram of the overall structure of the present invention; Figure 2 : A schematic diagram showing the connections between the various modules of the fixture body of this invention; Figure 3 : Connection diagram of each structure of the differential pressure sensing module of this invention; Figure 4 : Connection diagram of each structure of the adaptive driving module of this invention; Figure 5 : Connection diagram of each structure of the blocking execution module of this invention; Figure 6 : Schematic diagram of the connection of each structure of the early warning module of the present invention.

[0019] The components include: 1. Fixture body; 11. Arc-shaped clamping arm; 12. Elastic buffer layer; 13. Clamping plate; 14. Two-way lead screw; 15. Nut; 16. Positioning sensor; 2. Differential pressure sensing module; 21. Pressure sensor; 22. Signal processing unit; 3. Adaptive drive module; 31. Miniature hydraulic pump; 32. Electromagnetic directional valve; 33. Hydraulic telescopic cylinder; 4. Sealing execution module; 41. Sealing seat; 42. Elastic sealing head; 43. Pressure feedback submodule; 5. Early warning module; 51. LED warning light; 52. Buzzer. Detailed Implementation

[0020] To better understand the present invention, the content of the invention is further clearly illustrated below with reference to embodiments and accompanying drawings. However, the scope of protection of the present invention is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details.

[0021] Example 1, see Figure 1 An adaptive sealing fixture for radiator corrosion leakage based on differential pressure sensing includes a fixture body 1, a differential pressure sensing module 2, an adaptive drive module 3, and a sealing execution module 4. The fixture body 1 is used to form a detachable fixed fit with the area of ​​the radiator to be sealed. The differential pressure sensing module 2 is embedded in the fixture body 1 with its sensing section facing the radiator wall, and is used to detect the pressure difference between the inside and outside of the radiator in real time. The adaptive drive module 3 is electrically connected to the differential pressure sensing module 2, and the sealing execution module 4 is drively connected to the adaptive drive module 3. The adaptive drive module 3 can drive the sealing execution module 4 to move towards the radiator leakage point and form a sealing fit according to the pressure difference signal output by the differential pressure sensing module 2.

[0022] It should be noted that the differential pressure sensing module 2 is the core of leakage detection, used to capture pressure changes in real time; the adaptive drive module 3 is the power source for sealing, using hydraulic drive to ensure stable output force; and the sealing execution module 4 acts directly on the leakage point, using elastic fit + pressure feedback design to improve the sealing effect.

[0023] Technical benefits: By adopting differential pressure sensing module 2, automatic leakage detection can be achieved, shortening the response time. Adaptive drive module 3 can quickly complete the sealing, shortening the overall emergency handling time and improving efficiency. At the same time, the device can complete the sealing without stopping the machine, avoiding production interruption losses caused by traditional welding repair.

[0024] In embodiment 2, the clamp body 1 includes two symmetrically arranged arc-shaped clamping arms 11 and an adjusting locking assembly connected to the ends of the two arc-shaped clamping arms 11. The inner sidewalls of the two arc-shaped clamping arms 11 are provided with elastic buffer layers 12. The adjusting locking assembly includes two clamping plates 13. The outer side of the upper clamping plate 13 is provided with a bidirectional screw 14 extending to the outer side of the lower clamping plate 13. The surface of the bidirectional screw 14 is threaded with a nut 15. The ends of the two arc-shaped clamping arms 11 are rotatably connected to the nut 15. By rotating the bidirectional screw 14, the distance between the two arc-shaped clamping arms 11 can be adjusted to adapt to radiator pipes of different diameters.

[0025] It should be noted that the arc-shaped clamping arm 11 is made of 304 stainless steel with a thickness of 8mm and an arc range of 120°-180°, which can be used to fit circular radiator pipes with a diameter of 50mm-200mm; the bidirectional lead screw 14 is 150mm long and has reverse threads on its surface. The nut 15 is connected to the end of the arc-shaped clamping arm 11 by a pin. By rotating the bidirectional lead screw 14 clockwise, the distance between the two arc-shaped clamping arms 11 can be reduced, and by rotating it counterclockwise, the distance can be increased, with an adjustment accuracy of 1mm; the elastic buffer layer 12 is made of fluororubber with a thickness of 5mm and is bonded to the inner wall of the arc-shaped clamping arm 11 with a high-temperature resistant adhesive. Its surface has anti-slip texture and a friction coefficient ≥0.8, which can not only prevent damage to the outer wall of the radiator during clamping, but also enhance the fit and sealing between the clamp and the wall.

[0026] Technical Benefits: The adjusting locking assembly, with its double clamping plates 13 and bidirectional lead screw 14, provides stronger support stability for the bidirectional lead screw 14, reducing the likelihood of misalignment during rotation. Combined with the threaded nut 15, it drives the arc-shaped clamping arm 11 to open and close, eliminating the need for custom-made clamps for different pipe diameters and reducing user procurement and inventory costs. Enhanced clamping stability ensures more reliable sealing. The two clamping plates 13 provide bidirectional support to the bidirectional lead screw 14, effectively limiting its radial movement under stress. This results in more even force distribution on the arc-shaped clamping arm 11 during clamping, preventing misalignment between the clamping arm and the radiator wall due to lead screw wobbling. It also extends the service life of the assembly.

[0027] Optionally, the differential pressure sensing module 2 includes two pressure sensors 21 and a signal processing unit 22. One pressure sensor 21 is an internal pressure sensor used to detect the pressure of the medium inside the radiator, and its sensing end extends into the radiator through a guide hole opened on the fixture body 1. The other pressure sensor 21 is an external pressure sensor used to detect the external environmental pressure of the radiator, and its sensing end is exposed on the outside of the fixture body 1. The signal processing unit 22 is electrically connected to the two pressure sensors 21 respectively, and is used to calculate the difference between the detected values ​​of the two pressure sensors 21 and output the differential pressure signal.

[0028] In addition, the differential pressure sensing module 2 is the core of the leakage detection, used to capture pressure changes in real time. The internal pressure sensor 21 is a diffused silicon pressure sensor 21 with a range of 0-2.5MPa and an accuracy class of 0.1. Its sensing end extends into the heat sink through a guide hole with a diameter of 8mm opened on the fixture body 1. The guide hole and the heat sink are sealed with a sealing ring. The external pressure sensor 21 is a pressure sensor of the same model with a range of 0-0.1MPa. Its sensing end is exposed on the outside of the arc-shaped clamp arm 11 and is covered with a dust cover. The signal processing unit 22 uses an STM32F103 microcontroller as the core controller, integrating a signal amplification circuit and an A / D conversion module. It is installed in a waterproof box on the outside of the arc-shaped clamp arm 11 and is electrically connected to the internal pressure sensor 21 and the external pressure sensor 21 through shielded wires. The sampling frequency is set to 10Hz. It can calculate the pressure values ​​of the two sensors in real time and output a 4-20mA standard signal.

[0029] Technical Benefits: By employing the differential pressure sensing module 2, the accuracy of leak detection is improved, avoiding false positives and false negatives. Two pressure sensors 21, one internal and one external, collect the pressure of the medium inside the radiator and the other external environmental pressure, directly eliminating the interference of environmental pressure fluctuations on the detection results. Compared to a single pressure detection method, this improves the accuracy of leak detection. The pressure acquisition is comprehensive and highly targeted, adapting to complex operating conditions. The sensing end of the internal pressure sensor 21 extends deep into the radiator, directly contacting the medium and avoiding pressure attenuation issues caused by indirect detection through the outer wall. This is particularly suitable for high-temperature and high-viscosity media scenarios. The external pressure sensor 21 is exposed on the outside of the fixture body 1, enabling rapid response to changes in environmental pressure. Together, these two sensors allow the module to adapt to a wide range of operating conditions from -20℃ to 180℃ and 0 to 3MPa, expanding the application scenarios of the device. The signal processing is efficient and reliable, providing accurate data for sealing. The modular design facilitates maintenance and upgrades, reducing operating costs.

[0030] Optionally, the adaptive drive module 3 includes a micro hydraulic pump 31, an electromagnetic directional valve 32, and a hydraulic telescopic cylinder 33. The micro hydraulic pump 31 is electrically connected to the signal processing unit 22. The electromagnetic directional valve 32 is connected to both the micro hydraulic pump 31 and the hydraulic telescopic cylinder 33. The cylinder body of the hydraulic telescopic cylinder 33 is fixed in the middle of the arc-shaped clamping arm 11, and the end of its piston rod is fixedly connected to the sealing execution module 4. The signal processing unit 22 can control the start and stop of the micro hydraulic pump 31 and the valve core switching of the electromagnetic directional valve 32 according to the differential pressure signal, so as to drive the hydraulic telescopic cylinder 33 to move the sealing execution module 4.

[0031] It should be added that the miniature hydraulic pump 31 is a DC 12V gear hydraulic pump with a rated working pressure of 3MPa, a maximum flow rate of 1.2L / min, and a size of only 80mm×50mm×40mm. It is fixed to the reserved mounting position on the outside of the arc-shaped clamping arm 11 by an L-shaped metal bracket. The bracket and clamping arm are fastened with M4 hex bolts to ensure that the vibration amplitude of the pump body is ≤0.5mm during operation. The solenoid directional valve 32 is a two-position four-way solenoid directional valve with a working voltage of 12V and a response time of ≤10ms. The valve body is equipped with a P port (oil inlet), a T port (oil return port), an A port, and a B port (working oil port). The P port is connected to the miniature hydraulic pump 31 through a φ6mm high-pressure hydraulic oil pipe. The oil outlet is connected, and the T port is connected to a 150mL miniature hydraulic oil tank via a standard oil pipe. The A port and the B port are connected to the rodless chamber and rod chamber interfaces of the hydraulic telescopic cylinder 33, respectively. The hydraulic telescopic cylinder 33 adopts a single-rod piston structure with a cylinder diameter of 20mm, a piston rod diameter of 10mm, an effective stroke of 40mm, and a rated output force of ≥942N. The cylinder body is fixed to the circular mounting seat on the inner side of the arc-shaped clamping arm 11 by welding. The mounting seat is perpendicular to the axis of the clamping arm at 90° to ensure that the extension and retraction direction of the piston rod is facing the radiator wall. The piston rod end is machined with an M8 external thread, which mates with the central threaded hole of the sealing seat 41 of the sealing execution module 4. The connection is wrapped with polytetrafluoroethylene sealing tape to enhance the sealing performance.

[0032] Technical effects: The driving force is stable and controllable, the sealing reliability is significantly improved, the output force fluctuation range is controlled within ±5%, and within the working pressure range of 1MPa-2.5MPa of the radiator, it can provide sufficient fitting pressure to make the elastic sealing head 42 fit tightly against the leakage point. Compared with the traditional manually driven sealing clamp, the sealing success rate is improved. For different leakage levels, the signal processing unit 22 can achieve graded thrust control by adjusting the working time of the micro hydraulic pump 31.

[0033] Optionally, the sealing execution module 4 includes a sealing seat 41, an elastic sealing head 42, and a pressure feedback submodule 43. The sealing seat 41 is fixedly connected to the piston of the hydraulic telescopic cylinder 33. The elastic sealing head 42 is integrally formed with the side of the sealing seat 41 away from the piston rod, and the end face of the elastic sealing head 42 is arc-shaped to fit the radiator wall. The pressure feedback submodule 43 is embedded inside the elastic sealing head 42 and is used to detect the contact pressure between the elastic sealing head 42 and the radiator wall, and to feed back the pressure signal to the signal processing unit 22.

[0034] In addition, the support base of the sealing seat 41 module is made of 45# steel and has a cylindrical structure with a diameter of 45mm and a thickness of 12mm. It has an M10 internal thread hole in its center, which precisely matches the external thread at the end of the piston rod of the hydraulic telescopic cylinder 33. After connection, it is locked with double nuts 15 to prevent loosening, ensuring no relative displacement during transmission. The sealing seat 41 has an annular positioning groove on the side facing the elastic sealing head 42, with a depth of 2mm and a width of 3mm, to improve the connection stability with the elastic sealing head 42. The elastic sealing head 42 is made of fluorosilicone rubber. The material is integrally vulcanized and molded, with a temperature resistance range of -40℃ to 200℃. It has excellent resistance to oil, acid and alkali corrosion, and can be used with various radiator media such as water, steam, and heat transfer oil. The core of the pressure feedback submodule 43 is a miniature piezoresistive pressure sensor with a range of 0-5MPa, an accuracy class of 0.2, and a response time of ≤1ms. The sensor is encapsulated in a stainless steel shell with a diameter of 7.8mm. It is inserted into the reserved hole of the elastic sealing head 42 through an interference fit. Its sensing surface is flush with the arc-shaped end face of the elastic sealing head 42 to ensure accurate pressure detection.

[0035] Technical benefits: This module boasts a high degree of sealing and fit, significantly improving the reliability of leak sealing, providing real-time and accurate pressure feedback, optimizing closed-loop control, exhibiting strong structural stability, significantly extending service life, broad adaptability, reducing the cost of use in various scenarios, and offering convenient operation and lower maintenance threshold.

[0036] Optionally, it also includes an early warning module 5, which is electrically connected to the differential pressure sensing module 2. When the pressure value detected by the differential pressure sensing module 2 is greater than a preset threshold, the early warning module 5 issues an audible and visual early warning signal. The early warning module 5 also includes an LED warning light 51 and a buzzer 52, both of which are embedded in the outer wall of the fixture body 1.

[0037] Technical benefits: The early warning module 5 is directly electrically connected to the differential pressure sensing module 2. When the differential pressure signal exceeds a preset threshold such as 0.1MPa, the LED warning light 51 and the buzzer 52 can be triggered synchronously within 50ms. The flashing red light at a frequency of 2 times / second and the buzzer sound at a frequency of over 85dB form a dual warning. Compared with a single visual or auditory warning, the operator's efficiency in identifying leakage signals is improved, the warning information is accurately correlated, and the cost of troubleshooting is reduced. At the same time, the warning signal is linked with the sealing system, and the operator can locate the leak point through the warning without having to inspect the heat sink one by one, thus shortening the troubleshooting time.

[0038] Optionally, the inner sidewall of the arc-shaped clamping arm 11 is also provided with a positioning sensor 16. The positioning sensor 16 is electrically connected to the signal processing unit 22 and is used to detect the fit between the arc-shaped clamping arm 11 and the heat sink wall. When the fit is lower than a preset value, the signal processing unit 22 can control the warning module 5 to send a positioning abnormality signal.

[0039] Technical benefits: The use of positioning sensor 16 and signal processing unit 22 in combination can avoid the risk of fixture fixation in advance, consolidate the sealing foundation, prevent fixture displacement when the sealing execution module 4 applies force, and reduce the risk of sealing failure; simplify the operation and debugging process, lower the threshold of use, adapt to complex pipeline conditions, and improve the versatility of the device; reduce maintenance costs and extend equipment life.

[0040] Optionally, a dustproof protective sleeve is provided on the outer side of the hydraulic telescopic cylinder 33. The dustproof protective sleeve adopts a telescopic bellows structure, with one end sealed to the inner wall of the arc-shaped clamp arm 11 and the other end sealed to the outer wall of the sealing seat 41, in order to prevent dust and media from entering the interior of the hydraulic telescopic cylinder 33.

[0041] Technical Benefits: The dustproof protective sleeve effectively isolates contaminants, ensuring the reliable operation of the hydraulic telescopic cylinder 33. The telescopic bellows structure of the dustproof protective sleeve deforms synchronously with the extension and retraction of the piston rod of the hydraulic telescopic cylinder 33, fully enclosing the connection between the cylinder body and the piston rod. This effectively prevents dust, welding slag, coolant, and radiator leakage media in industrial settings from entering the cylinder, reducing the contaminant intrusion rate of the hydraulic telescopic cylinder 33. Enhanced sealing protection makes it suitable for complex and harsh working conditions. Both ends of the dustproof protective sleeve are connected to the inner wall of the arc-shaped clamping arm 11 and the outer wall of the sealing seat 41 using a double sealing connection of sealing rings and hose clamps, achieving an IP68 sealing performance. It can operate for extended periods in humid, dusty, and slightly immersed environments, making it suitable for industrial scenarios with high dust concentrations and strong corrosive media, such as metallurgy and chemical industries.

[0042] Optionally, the end face of the elastic sealing head 42 is provided with an annular sealing protrusion, which is provided along the edge of the end face of the elastic sealing head 42, and the interface of the annular sealing protrusion is triangular; when the elastic sealing head 42 is in contact with the radiator wall, the annular sealing protrusion can undergo elastic deformation and embed itself into the corrosion gap of the radiator wall.

[0043] Technical Benefits: The ring-shaped sealing protrusion enables precise sealing at the gap level, significantly improving sealing reliability. The triangular interface of the ring-shaped sealing protrusion has stress concentration characteristics. Under the action of contact pressure, its sharp edges can form concentrated pressure (3-5 times higher than the planar structure), which can easily embed into the 0.1-2mm wide corrosion gaps on the radiator wall, forming a dual sealing structure of "physical embedding + elastic wrapping". Compared with the planar sealing head without protrusion, the media leakage rate is reduced; the adaptive fitting ability is enhanced, adapting to complex leakage surface morphology; the resistance to media erosion is excellent, extending the sealing effectiveness; the sealing pressure requirement is reduced, protecting the fragile radiator wall.

[0044] Optionally, the outer wall of the fixture body 1 is also provided with a charging interface and a power indicator light. A lithium battery is embedded inside the fixture body 1. The lithium battery is electrically connected to the differential pressure sensing module 2, the adaptive drive module 3, the sealing execution module 4, and the early warning module 5, respectively, to provide working power for each module. The charging interface is electrically connected to the lithium battery to charge the lithium battery, and the power indicator light is used to display the remaining power of the lithium battery.

[0045] Technical benefits: The charging port eliminates the need for an external power source, increasing usability. Working Principle: When a potential corrosion leak is detected in the radiator or a leak has already occurred, the two arc-shaped clamping arms 11 of the clamp body 1 are first placed on both sides of the leak point. The clamping is then tightened by rotating the bidirectional screw 14 of the locking assembly. During this process, the positioning sensor 16 on the inner wall of the arc-shaped clamping arms 11 continuously monitors the fit between the clamping arms and the wall. If the fit is lower than a preset value, a signal is immediately transmitted to the signal processing unit 22. The signal processing unit 22 then controls the warning module 5 to issue an audible and visual signal indicating a positioning abnormality, prompting the operator to readjust the clamping arm position to ensure the clamp is securely fixed, providing a stable foundation for subsequent sealing actions. Simultaneously, the lithium battery embedded inside the clamp body 1 powers various functional modules, such as the differential pressure sensing module 2 and the adaptive drive module 3, through an independent power supply circuit. The battery level indicator provides real-time feedback on the remaining battery power, ensuring stable power supply to the device. After the clamp is fixed, the differential pressure sensing module 2 automatically enters the working state. The internal pressure sensor 21 in the module extends its sensing end into the radiator through the guide hole on the clamp body 1, collecting media data in real time. Pressure data; the external pressure sensor 21 is exposed on the outside of the fixture body 1, and synchronously detects the external environmental pressure of the radiator. The two pressure signals are transmitted to the signal processing unit 22, which calculates the difference between the two sets of detected values ​​to obtain the real-time pressure difference between the inside and outside of the radiator. When the radiator is corroded and leaks, the internal medium overflows outward, causing the internal and external pressure balance to be broken. The pressure difference will quickly exceed the preset threshold. At this time, the signal processing unit 22 immediately determines that there is a leak and triggers two actions simultaneously: first, it sends a signal to the early warning module 5 to control the LED warning light 51 to flash (red, frequency 2 times / second) and the buzzer 52 to sound (volume ≥85dB) to issue a leak warning; second, it outputs a drive signal to the adaptive drive module 3 to start the sealing process. After receiving the drive command from the signal processing unit 22, the micro hydraulic pump 31 starts immediately and controls the flow of hydraulic oil through the valve core switching of the electromagnetic reversing valve 32. The electromagnetic reversing valve 32 guides the high-pressure oil output by the hydraulic pump to the rodless chamber of the hydraulic telescopic cylinder 33, pushing the piston rod to extend. The hydraulic telescopic cylinder 33 is fixed to the inner side of the middle of the arc-shaped clamping arm 11. The end of its piston rod is fixedly connected to the sealing seat 41 of the sealing execution module 4. Therefore, when the piston rod extends, it will synchronously drive the sealing execution module 4 to move towards the radiator leakage point. The telescopic bellows dustproof protective sleeve on the outside of the hydraulic telescopic cylinder 33 deforms synchronously with the extension and retraction of the piston rod, covering the connection between the cylinder body and the piston rod throughout the entire process, preventing dust and leaked media from entering the cylinder body and affecting its operation.

[0046] When the elastic sealing head 42 of the sealing execution module 4 contacts the radiator wall, as the piston rod continues to extend, the fluorosilicone rubber elastic sealing head 42 undergoes elastic deformation under pressure, and its arc-shaped end face fits tightly against the radiator wall. Under the pressure concentration effect, the triangular cross-section annular sealing protrusion at the edge of the end face of the elastic sealing head 42 embeds into the corrosion gaps of the radiator wall, forming a dual guarantee of physical fitting and elastic sealing. At the same time, the pressure feedback submodule 43 embedded inside the elastic sealing head 42 detects the fitting pressure in real time and transmits the data to the signal processing unit 22. When the pressure reaches the preset optimal sealing pressure (e.g., 2MPa), the signal processing unit 22 controls the micro hydraulic pump 31 to stop, the valve core of the electromagnetic reversing valve 32 resets to the neutral position to maintain pressure, the piston rod stops moving, and the adaptive sealing action is completed.

[0047] After sealing is completed, the device enters the continuous monitoring phase. The differential pressure sensing module 2 continuously collects and calculates the pressure difference between the inside and outside of the radiator in real time. If the seal becomes loose due to medium pressure fluctuations, slight wear of the sealing surface, or other reasons, the pressure difference will exceed the threshold again. The signal processing unit 22 will repeatedly trigger the adaptive drive module 3 to control the hydraulic telescopic cylinder 33 to replenish pressure, ensuring that the elastic sealing head 42 maintains sufficient contact pressure. If the pressure feedback submodule 43 detects that the contact pressure is lower than the safe range (e.g., 1.5MPa), it will also directly feed back a signal to the signal processing unit 22 to initiate the pressure replenishment process. Throughout the monitoring process, the early warning module 5 is only triggered when there is a leak or abnormal positioning. If the sealing status is stable, it remains silent, and the power indicator light continuously reflects the power supply status, ensuring that the device can be in emergency standby mode for a long time. When it is necessary to remove the clamp, the signal processing unit 22 controls the solenoid reversing valve 32 to switch direction by manually operating the reset switch. Hydraulic oil enters the rod chamber of the hydraulic telescopic cylinder 33, and the piston rod retracts, causing the sealing execution module 4 to reset. Then, the bidirectional screw 14 is rotated in the opposite direction to release the clamp arm, thus completing the disassembly.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. The built-in lithium battery provides independent power to each functional module, so that the sealing clamp does not need to rely on the on-site mains power or temporary wiring. It can be used freely in scenarios such as outdoor radiators and high-altitude pipelines where there is no power supply. Compared with external power supply technology, it has a wider range of applicable scenarios.

[0049] Any other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of this invention, as long as they do not depart from the spirit and scope of the technical solutions of this invention, should be covered within the scope of the claims of this invention.

Claims

1. A differential pressure sensing based adaptive plugging fixture for corrosion leakage of a heat sink, characterized by: The device comprises a clamp body (1), a differential pressure sensing module (2), a self-adaptive driving module (3) and a plugging execution module (4). The clamp body (1) is used to form a detachable fixed cooperation with the area to be plugged of the radiator. The differential pressure sensing module (2) is embedded in the clamp body (1) and its sensing section faces the wall of the radiator, which is used to detect the pressure difference between the inside and outside of the radiator in real time. The self-adaptive driving module (3) is electrically connected with the differential pressure sensing module (2). The plugging execution module (4) is drivingly connected with the self-adaptive driving module (3). The self-adaptive driving module (3) can drive the plugging execution module (4) to move to the leakage point of the radiator and form a sealed fit according to the pressure difference signal output by the differential pressure sensing module (2).

2. The differential pressure induced heat sink corrosion leak adaptive plugging fixture of claim 1, wherein: The clamp body (1) comprises two symmetrical arc-shaped clamping arms (11) and an adjusting and locking assembly connected to the end portions of the two arc-shaped clamping arms (11). The inner side walls of the two arc-shaped clamping arms (11) are each provided with an elastic buffer layer (12). The adjusting and locking assembly comprises two clamping plates (13). The outer portion of the upper clamping plate (13) is provided with a bidirectional screw rod (14) extending to the outer portion of the lower clamping plate (13). The surface of the bidirectional screw rod (14) is threadedly connected with a nut (15). The end portions of the two arc-shaped clamping arms (11) are rotatably connected with the nut (15). The distance between the two arc-shaped clamping arms (11) can be adjusted by rotating the bidirectional screw rod (14) to adapt to radiators with different diameters.

3. The differential pressure induced heat sink corrosion leak adaptive plugging fixture of claim 1, wherein: The differential pressure sensing module (2) comprises two pressure sensors (21) and a signal processing unit (22). One of the pressure sensors (21) is an internal pressure sensor for detecting the internal medium pressure of the radiator. Its sensing end extends to the inside of the radiator through a guide hole formed in the clamp body (1). The other pressure sensor (21) is an external pressure sensor for detecting the external environmental pressure of the radiator. Its sensing end is exposed outside the clamp body (1). The signal processing unit (22) is electrically connected with the two pressure sensors (21) respectively. It is used to calculate the difference between the detection values of the two pressure sensors (21) and output a differential pressure signal.

4. The differential pressure induced heat sink corrosion leak adaptive plugging fixture of claim 3, wherein: The self-adaptive driving module (3) comprises a micro hydraulic pump (31), an electromagnetic reversing valve (32) and a hydraulic telescopic cylinder (33). The micro hydraulic pump (31) is electrically connected with the signal processing unit (22). The electromagnetic reversing valve (32) is in communication with the micro hydraulic pump (31) and the hydraulic telescopic cylinder (33) respectively. The cylinder body of the hydraulic telescopic cylinder (33) is fixed in the inner portion of the middle of the arc-shaped clamping arm (11). The piston rod end thereof is fixedly connected with the plugging execution module (4). The signal processing unit (22) can control the start and stop of the micro hydraulic pump (31) and the spool reversing of the electromagnetic reversing valve (32) according to the differential pressure signal, so as to drive the hydraulic telescopic cylinder (33) to move the plugging execution module (4).

5. The differential pressure induced heat sink corrosion leak adaptive plugging fixture of claim 4, wherein: The plugging execution module (4) comprises a plugging seat (41), an elastic plugging head (42) and a pressure feedback submodule (43), the plugging seat (41) is fixedly connected with the piston of the hydraulic telescopic cylinder (33), the elastic plugging head (42) is integrally formed with the side of the plugging seat (41) away from the piston rod, and the end face of the elastic plugging head (42) is arc-shaped and adapted to the wall surface of the radiator; the pressure feedback submodule (43) is embedded in the elastic plugging head (42), is used for detecting the fitting pressure of the elastic plugging head (42) and the wall surface of the radiator, and feeds back the pressure signal to the signal processing unit (22).

6. The differential pressure induced heat sink corrosion leak adaptive plugging fixture of claim 1, wherein: Further comprising a pre-warning module (5), the pre-warning module (5) is electrically connected with the pressure difference sensing module (2), when the pressure value detected by the pressure difference sensing module (2) is greater than a preset threshold value, the pre-warning module (5) sends out an audible and light pre-warning signal; the pre-warning module (5) further comprises an LED warning light (51) and a buzzer (52), the LED warning light (51) and the buzzer (52) are both embedded in the outer side wall of the clamp main body (1).

7. The differential pressure induced heat sink corrosion leak adaptive plugging fixture of claim 6, wherein: The inner side wall of the arc-shaped clamp arm (11) is further provided with a positioning sensor (16), the positioning sensor (16) is electrically connected with the signal processing unit (22), is used for detecting the fitting degree of the arc-shaped clamp arm (11) and the wall surface of the radiator, when the fitting degree is lower than a preset value, the signal processing unit (22) can control the pre-warning module (5) to send out a positioning abnormal signal.

8. The differential pressure induced heat sink corrosion leak adaptive plugging fixture of claim 5, wherein: The outer side of the hydraulic telescopic cylinder (33) is provided with a dustproof protective sleeve, the dustproof protective sleeve adopts a telescopic bellows structure, one end of the dustproof protective sleeve is sealingly connected with the inner side wall of the arc-shaped clamp arm (11), the other end of the dustproof protective sleeve is sealingly connected with the outer side wall of the plugging seat (41), and the dustproof protective sleeve is used for preventing dust and medium from entering the inside of the hydraulic telescopic cylinder (33).

9. The differential pressure induced heat sink corrosion leak adaptive plugging fixture of claim 6, wherein: The end face of the elastic plugging head (42) is provided with an annular sealing protrusion, the annular sealing protrusion is arranged along the edge of the end face of the elastic plugging head (42), and the interface of the annular sealing protrusion is triangular; when the elastic plugging head (42) is fitted with the wall surface of the radiator, the annular sealing protrusion can be elastically deformed and embedded in the corrosion gap of the wall surface of the radiator.

10. The differential pressure induced heat sink corrosion leak adaptive plugging fixture of any one of claims 1-9, wherein: The outer side wall of the clamp main body (1) is further provided with a charging interface and an electric quantity display lamp, a lithium battery is embedded in the inside of the clamp main body (1), the lithium battery is electrically connected with the pressure difference sensing module (2), the self-adaptive driving module (3), the plugging execution module (4) and the pre-warning module (5) respectively, is used for providing working power supply for each module, the charging interface is electrically connected with the lithium battery, is used for charging the lithium battery, and the electric quantity display lamp is used for displaying the residual electric quantity of the lithium battery.

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