Method and system for checking internal leakage of external pressure stop valve of vulcanizing machine

Abstract

The invention relates to the technical field of condensate water detection, and discloses a method and system applied to internal leakage detection of an external pressure stop valve of a vulcanizing machine, and the method comprises the following steps: installing a small ball valve on a pipeline between the stop valve and a root ball valve in an external pressure condensate water discharge system of the vulcanizing machine; when the stop valve is in a closed state, the root ball valve is closed firstly; then the small ball valve is opened, condensate water is allowed to be discharged through the small ball valve, and whether condensate water is discharged from the small ball valve or not is observed; if the small ball valve discharges the condensate water, it is judged that the stop valve has internal leakage, and if the small ball valve does not discharge the condensate water, it is judged that the stop valve does not have internal leakage; and after judgment is completed, the small ball valve is closed, and the original state of the root ball valve is recovered for normal operation. By introducing the transparent drainage cavity and the visual auxiliary device, real-time observation and accurate judgment of the outflow state of the condensate water are achieved, an operator can clearly and visually see the outflow condition of the condensate water, and the problems of misjudgment and missing report in a traditional measurement method are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of condensate detection, and specifically to a method and system for checking internal leakage of an external pressure cut-off valve of a vulcanizer. Background Art

[0002] In a pipeline system of a vulcanizer, especially in application scenarios involving cut-off valves and ball valves, the discharge condition of condensate is usually an important indicator during system operation. The presence and flow state of condensate directly reflect the sealing performance of the valve and whether there is internal leakage. Therefore, real-time monitoring of condensate has become a key task in pipeline system maintenance. To ensure the long-term stable operation of the system, it is necessary to effectively observe and judge whether the condensate is discharged normally.

[0003] In the prior art, the monitoring of condensate mostly relies on flow sensors, temperature sensors, and pressure sensors to indirectly judge the operating state of the valve. However, these devices are often limited by the accuracy of the sensors, environmental interference, and the maintenance cost of the devices, resulting in the inability to accurately judge the discharge condition of condensate under low flow rates, minor leaks, or complex working conditions. In addition, traditional manual detection methods or simply through metal pipelines cannot effectively and intuitively observe the flow of condensate, increasing the work difficulty and misjudgment risk of operators. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a method and system for checking internal leakage of an external pressure cut-off valve of a vulcanizer, which solves the problem that in the prior art, to check whether the cut-off valve has internal leakage, only by disassembling the cut-off valve for further inspection. This method of disassembling and assembling the cut-off valve is relatively laborious and time-consuming. It takes about 50 minutes to disassemble and assemble a cut-off valve, resulting in a long time-consuming and affecting production and processing.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A method for checking internal leakage of an external pressure cut-off valve of a vulcanizer, comprising the following steps:

[0006] In the external pressure condensate discharge system of the vulcanizer, install a small ball valve on the pipeline between the cut-off valve and the root ball valve;

[0007] When the cut-off valve is in the closed state, first close the root ball valve to form a closed detection section and keep the pipeline pressure stable;

[0008] Then open the small ball valve to allow condensate to be discharged through the small ball valve, and observe whether condensate is discharged from the small ball valve;

[0009] If condensate is discharged from the small ball valve, it is determined that the cut-off valve has internal leakage. If no condensate is discharged from the small ball valve, it is determined that the cut-off valve has no internal leakage;

[0010] After the judgment is completed, close the small ball valve and restore the root ball valve to its original state for normal operation.

[0011] Preferably, the small ball valve is used to assist in internal leakage detection. After installing the small ball valve, check the sealing performance and pressure resistance of the pipe section where the small ball valve is located. The material of the small ball valve is made of stainless steel or copper alloy.

[0012] Preferably, the connection method of the small ball valve includes threaded connection, welding or flange connection. The opening and closing of the small ball valve are manually controlled by the operator or controlled by an electromagnetic valve.

[0013] Preferably, after closing the root ball valve, wait for 10 to 20 seconds to make the residual pressure and temperature changes inside the system tend to balance, so as to stabilize the pressure in the detection section.

[0014] Preferably, the observation step includes observing whether condensate water flows out by the naked eye of a person, or assisting in judgment through a transparent drainage cavity.

[0015] Preferably, the judgment step further includes recording the detection results and including the cut-off valve with internal leakage in the subsequent maintenance plan.

[0016] A system applied to the internal leakage inspection of the external pressure cut-off valve of a vulcanizer includes:

[0017] An installation module for installing a small ball valve between the cut-off valve and the root ball valve to detect whether there is internal leakage;

[0018] A control module for controlling the closing of the root ball valve during the detection process to form a detection section in the system;

[0019] A discharge module for opening the small ball valve during internal leakage detection, discharging condensate water and allowing observation and judgment of the drainage situation;

[0020] An observation module for real-time monitoring of the drainage situation and combining with a vision device to judge whether condensate water is discharged;

[0021] A data recording module for recording the data and judgment results of each detection and automatically generating a detection report.

[0022] Preferably, the observation module is provided with a remote monitoring module for remotely operating and observing the detection process, providing real-time alarm and data analysis.

[0023] The present invention provides a method and a system applied to the internal leakage inspection of the external pressure cut-off valve of a vulcanizer. It has the following beneficial effects:

[0024] 1. By introducing a transparent drainage cavity and a visual assistance device, the present invention enables real-time observation and accurate judgment of the outflow state of condensed water, achieving the effects of improving detection accuracy and operation simplicity. The operator can clearly and intuitively see the outflow of condensed water, reducing misjudgment and false alarm problems in traditional measurement methods.

[0025] 2. By setting up a remote monitoring module, the present invention realizes remote operation and real-time monitoring of the detection process, achieving the effects of improving system monitoring efficiency and operation safety. Through remote real-time alarm and data analysis, the workload of personnel on-site is reduced, and potential faults or abnormalities can be responded to in a timely manner.

[0026] 3. By precisely controlling the closing of the root ball valve through the control module, the present invention realizes complete isolation of the detection section after pressure stabilization, achieving the effects of improving detection accuracy and reliability. It can effectively isolate external pressure fluctuations and ensure that the detection results of condensed water are not interfered by the outside world.

[0027] 4. Through the embedded recording and report generation functions of the data recording module, the present invention realizes automatic recording of detection results and archiving of historical data, achieving the effects of enhancing the scientific nature of maintenance decision-making and data traceability, and providing detailed data support for subsequent fault analysis and maintenance plan formulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a flowchart of the method for the present invention applied to the internal leakage inspection of the external pressure cut-off valve of a vulcanizer;

[0029] Figure 2 is a module relationship architecture diagram of the system for the present invention applied to the internal leakage inspection of the external pressure cut-off valve of a vulcanizer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to the attached Figure 1 , the embodiments of the present invention provide a method for the internal leakage inspection of the external pressure cut-off valve of a vulcanizer, including the following steps:

[0032] In the external pressure condensed water discharge system of the vulcanizer, install a small ball valve on the pipeline between the cut-off valve and the root ball valve;

[0033] With the cut-off valve in the closed state, first close the root ball valve to form a closed detection section and keep the pipeline pressure stable;

[0034] Then open the small ball valve to allow the condensate to drain through the small ball valve, and observe whether there is condensate draining from the small ball valve;

[0035] If condensate drains from the small ball valve, it is determined that there is internal leakage in the cut-off valve. If no condensate drains from the small ball valve, it is determined that there is no internal leakage in the cut-off valve;

[0036] After the judgment is completed, close the small ball valve and restore the root ball valve to its original state for normal operation.

[0037] Specifically, in the prior art, the external pressure cut-off valve of the vulcanizer is used to discharge the condensate in the upper hot plate, lower hot plate, and mold sleeve of the vulcanizer. Each 65-inch vulcanizer has three external pressure cut-off valves. The external pressure cut-off valve is generally opened once every about 2 minutes to discharge the condensate in the hot plate and mold sleeve. After the condensate is discharged, the cut-off valve will close. When the cut-off valve is closed, it is necessary to ensure that there is no internal leakage in the cut-off valve. However, the cut-off valve is installed on the pipeline. After the condensate is discharged from the upper and lower hot plates and mold sleeve through the cut-off valve, it is then transported through the pipeline to the power station for recycling. The entire pipeline is airtight, and the medium inside the pipeline cannot be seen. Therefore, it is impossible to confirm whether there is internal leakage in the cut-off valve. To check whether there is internal leakage in the cut-off valve 1, only the cut-off valve 1 can be disassembled for further inspection. This method of disassembling and assembling the cut-off valve is relatively laborious and time-consuming (it takes about 50 minutes to disassemble and assemble one cut-off valve).

[0038] This method aims to detect the internal leakage of the cut-off valve through simple, direct, and efficient means. This internal leakage detection method is applicable to the external pressure cut-off valves commonly found in vulcanizer equipment and has strong adaptability. It can be carried out during the operation of the vulcanizer, reducing the need for shutdown maintenance, thereby improving the production efficiency and reliability of the equipment. First, in the external pressure condensate discharge system of the vulcanizer, a small ball valve is installed on the pipeline between the cut-off valve and the root ball valve. It can form an independent detection section when the cut-off valve is closed. By opening and closing the small ball valve, the condensate inside the detection section can be discharged or kept stationary under controlled conditions, thereby realizing the monitoring of the internal leakage situation of the cut-off valve. Through this setting, it is possible to avoid the complexity of valve disassembly and the operation complexity of other traditional detection methods, improving the convenience and efficiency of detection. When the cut-off valve is in the closed state, first, the root ball valve needs to be closed to ensure that the detection section forms a closed state and the pressure inside the pipeline is stable. Because it ensures that the condensate discharged through the small ball valve completely comes from the connection part between the cut-off valve and the pipeline, without being interfered by external factors. This control method can effectively avoid the influence of external pressure fluctuations or leaks in other parts of the system on the accuracy of the detection results, ensuring the reliability of the internal leakage detection;

[0039] After the pressure in the detection section stabilizes, open the small ball valve to allow the condensate to drain through the small ball valve. At this time, the operator observes whether there is condensate draining from the small ball valve. If condensate drains from the small ball valve, it can be determined that there is internal leakage in the cut-off valve; if no condensate drains from the small ball valve, it can be determined that there is no internal leakage in the cut-off valve. Through this operation, the drainage volume of the condensate and whether there is drainage become the direct basis for judging the sealing performance of the cut-off valve. This judgment mechanism has the advantages of simplicity and intuitiveness, and factors such as the drainage volume and flow rate can be used as references for auxiliary judgment, thus further improving the sensitivity and accuracy of the detection;

[0040] Traditional internal leakage detection methods often require shutting down the machine and disassembling the valve, increasing the equipment downtime and maintenance costs. However, this method can perform internal leakage detection under the normal operating state of the vulcanizer, greatly improving the production efficiency. At the same time, through the control of the root ball valve and the switching management of the small ball valve, the present invention can accurately control the sealing performance of the detection section, avoiding misjudgment caused by leakage or drainage in other parts of the system;

[0041] This detection method has the advantages of simplicity, high efficiency, no need to shut down the machine, and no need for complex disassembly. It can monitor the internal leakage of the cut-off valve of the vulcanizer in real time, not only improving the reliability of equipment operation, but also reducing the production losses caused by shutdown maintenance. Through this innovative method, the maintenance efficiency of the vulcanizer and the stability of the production process have been significantly improved.

[0042] The small ball valve is used to assist in internal leakage detection. After installing the small ball valve, check the sealing performance and pressure resistance of the pipe section where the small ball valve is located. The material of the small ball valve is made of stainless steel or copper alloy.

[0043] Specifically, first, after installing the small ball valve, it is necessary to ensure that the pipe section has sufficient sealing performance to prevent leakage in other parts from affecting the detection results. This is completed by checking the sealing performance at the connection between the small ball valve and the pipeline, ensuring the tight fit of all connection parts, and avoiding air leakage and water leakage. After the cut-off valve and the root ball valve are closed, the detection section should remain closed, and any leakage may affect the judgment of the condensate drainage situation;

[0044] Secondly, when the vulcanizer is working, there is a certain pressure in the system. Therefore, the installed small ball valve and pipeline must be able to withstand the working pressure. After installing the small ball valve, a pressure resistance test helps to confirm that the pipe section will not rupture or leak due to pressure changes or external loads under operating conditions. This test ensures that the pipeline where the small ball valve is located can work stably during actual operation and provide accurate detection data. By selecting stainless steel or copper alloy as the main material of the small ball valve. These two materials have excellent corrosion resistance and high-pressure resistance, and can operate stably for a long time in the working environment of the vulcanizer, avoiding valve failure caused by material corrosion or fatigue. This material selection helps to ensure that the small ball valve can work stably in high-temperature and high-pressure environments and will not affect the accuracy and reliability of internal leakage detection due to material problems;

[0045] During the use process, it not only ensures the sealing performance and pressure resistance of the small ball valve after installation, but also ensures the stability and accuracy of the entire detection system through the inspection of the pipe section. Without affecting the normal operation of the vulcanizer, the internal leakage of the cut-off valve can be effectively detected, providing strong support for equipment maintenance.

[0046] The connection methods of the small ball valve include threaded connection, welding or flange connection. The opening and closing of the small ball valve are manually controlled by the operator or controlled by an electromagnetic valve.

[0047] Specifically, the small ball valve in the present invention adopts a variety of standardized connection methods, including threaded connection, welded connection and flange connection. Threaded connection is suitable for environments with small diameters and limited installation space, facilitating quick disassembly and maintenance; welded connection realizes a higher level of sealing effect by melting the joint surface material and is suitable for application scenarios with strict requirements for leakage control; the flange connection structure shows excellent stability and repeated sealing performance in large-diameter or frequently disassembled occasions. The integration of the above multiple connection forms is not a simple general adaptation, but through stress distribution simulation and material transition strengthening treatment in the structural design, the mechanical balance and fatigue life optimization of the connection part under various load conditions are realized, so that the small ball valve has good structural integrity and usage consistency under different connection methods;

[0048] In terms of the control method, the present invention provides two forms: manual control and electromagnetic control. In the manual control mode, the user can directly control the opening or closing of the ball core by rotating the operating handle. This mechanism adopts a mechanical transmission method and is supplemented by a low-friction composite seal pair, effectively reducing the operating torque and improving the stability of the operating response. The electromagnetic control structure realizes the goal of remote or automatic control through the rigid coupling between the electromagnetic drive unit and the ball core rotation mechanism. It has a fast response speed and high control accuracy, and is especially suitable for control nodes with strict requirements for beat response and system feedback in industrial automation processes;

[0049] A two-way stress buffer zone is introduced into the main structure of the ball valve. This area can effectively disperse the concentrated stress at the connection part under different connection methods, thereby enhancing the structural stability of the connection interface. The control mechanism forms a systematic power transmission path with this structure. By optimizing the clearance between the transmission shaft and the sealing component, it takes into account the dual requirements of different control methods for the response speed and sealing life inside the valve body, thereby achieving a dual improvement in control accuracy and valve life without increasing the structural complexity.

[0050] After closing the root ball valve, it is necessary to wait for 10 to 20 seconds to make the internal residual pressure and temperature change of the system tend to balance, so as to stabilize the pressure in the detection section.

[0051] Specifically, first, during the operation of the system, when the detection task is completed or the pipeline section needs to be switched, the operator or the automatic control system closes the root ball valve to cut off the continuous inflow of the upstream fluid. This action temporarily isolates the detection section from the main flow and forms a relatively closed pressure buffer zone. However, due to the flow inertia and temperature gradient still existing inside the system at the moment of closing, some residual media may continue to release energy in a short time, causing instantaneous disturbances.

[0052] Secondly, to ensure the accuracy and reliability of the pressure measurement data in the detection section, the present invention clearly stipulates that after closing the root ball valve, it is necessary to maintain a static time of about 10 to 20 seconds. This waiting time is set based on the actual test results of thermodynamics and fluid inertia response time, aiming to make the temperature gradient in the detection section tend to be stable and the residual pressure fluctuation gradually decay. During this period, the combined action of internal heat conduction and slow fluid backflow in the system makes the cavity pressure reach a thermodynamic steady state, which helps to avoid measurement errors or component stress accumulation caused by sudden pressure difference changes.

[0053] Finally, when the pressure and temperature reach a short-term stable state, the detection section can enter the next stage of data acquisition or status confirmation operation. Through this delay voltage stabilization mechanism, the present invention effectively avoids the misjudgment or error accumulation problems caused by rapid operation in the traditional system, thereby improving the measurement accuracy and operation safety of the system. This buffer strategy based on the design of the operation time window is a practical improvement in the process control logic of the present invention, with good engineering adaptability and replicability.

[0054] The observation step includes observing whether condensate flows out through the naked eye of a human or assisting in judgment through a transparent drainage cavity.

[0055] Specifically, first, after the root ball valve is closed and the pressure is stabilized and waiting, in order to determine whether there is condensate discharge in the system, the present invention sets up an artificial observation link as the preliminary judgment basis. At this stage, the operator directly observes with the naked eye whether there is condensate flowing out of the discharge port to confirm the actual presence or absence of condensate in the detection section. Although this method is the most basic judgment method, it is still retained as the primary judgment means because of its direct response and no need for additional devices, especially suitable for scenarios where the system's electronic control fails or manual verification is required;

[0056] Secondly, to improve the visibility and accuracy of judgment, the present invention sets up a transparent drainage cavity structure at the condensate discharge port as an auxiliary observation component. The drainage cavity is directly connected to the discharge passage, made of high-strength transparent material, and is provided with a visual observation window or reference scale line, which is convenient for the operator to accurately judge whether it is condensate during the liquid outflow process, as well as the preliminary volume and flow trend of the condensate, avoiding visual misjudgment caused by color, turbidity or liquid-gas interference in the traditional metal passage;

[0057] Most traditional condensate judgments rely on flow sensors or temperature difference induction devices, but there are often false triggers or missed reports in low-pressure / intermittent drainage scenarios. The present invention introduces a visual assistance mechanism, combines the analysis of the initial flow state of condensate by fluid mechanics (such as the formation of fine bubbles and fog-like droplets), and judges through the geometric guidance of the drainage cavity and the fluid interface form, improving the accuracy and system robustness without increasing the burden on the sensor. Finally, after observing and confirming the outflow of condensate, the operator can enter the next operation process of draining water record or closing the drainage channel. This observation step, as a key decision-making node in the process of the present invention, not only ensures the reliable execution of the drainage operation, but also enhances the adaptability and safety fault tolerance of the system under multiple working conditions through the redundant design of the "manual auxiliary device". This systematic and structured processing method of passive observation behavior is an important technical highlight of the present invention in terms of operation safety and process judgment reliability.

[0058] The judgment step also includes recording the detection results and listing the cut-off valve with internal leakage in the subsequent maintenance plan.

[0059] Specifically, first, after completing the preliminary judgment of the condensate outflow through manual observation or a transparent drainage chamber, a step of recording the test results is set as an important part of the judgment process. The recorded content includes not only whether there is condensate outflow, but also key parameters such as outflow volume, duration, observer information and operation time. By manually recording or automatically archiving with the data acquisition system, a complete condensate discharge data chain can be formed, which is convenient for subsequent trend analysis and maintenance decisions. It effectively improves the traceability of operation management. In conventional operating procedures, condensate detection is mostly instantaneous operation, lacking systematic data recording, which makes it difficult to trace back or locate problems after they occur. The present invention uses embedded or additional recording logic to form a closed-loop logic of "judgment-recording-countermeasures", thereby having continuous optimization capabilities. The data can be integrated into the upper control system, or directly formed into paper inspection records to adapt to different management needs;

[0060] Secondly, if the shut-off valve is found to have signs of internal leakage during the judgment process, such as a continuous trace amount of condensed water seeping out after the ball valve is closed or a backflow phenomenon occurs after the pressure is balanced, the present invention sets the judgment node as a fault identification trigger point. This type of judgment is combined with the observation results and recorded information. The system prompts or the operator determines that the sealing performance of the shut-off valve has declined. A delayed leakage identification mechanism is introduced into the judgment process, that is, the condensed water is still discharged during the delay period (for example, after 20 seconds) to identify potential micro-leaks. Compared with the traditional method of relying solely on pressure sensors to identify pressure drops, this method uses the physical phenomenon of liquid discharge for judgment, and has a lower misjudgment rate, especially under low-pressure conditions. It has significant advantages;

[0061] Finally, once the existence of internal leakage in the cut-off valve is confirmed, the system will use this phenomenon as evidence of abnormal equipment operation and automatically or manually include the valve in the subsequent maintenance plan. The relevant maintenance plan can evaluate the fault level based on the recorded information and add a regular inspection, repair or replacement list to ensure that the equipment will not cause unplanned downtime due to known defects in the future operation cycle. By coupling the judgment steps with the maintenance management system, a continuous data chain from observation-identification-recording-maintenance decision-making is constructed. Compared with the traditional isolated judgment method, this mechanism gives the valve detection operation a systematic meaning, making it not only a judgment behavior, but also an input port for operation data.

[0062] Please see attached Figure 2 , a system used for internal leakage inspection of external pressure cut-off valve of vulcanizing machine, including:

[0063] Installation module, used to install a small ball valve between the cut-off valve and the root ball valve to detect whether there is internal leakage;

[0064] A control module is used to control the closing of the root ball valve during the detection process, so that the system forms a detection section;

[0065] The discharge module is used to open the small ball valve during internal leakage detection, discharge the condensed water and allow the observation and judgment of the drainage situation;

[0066] The observation module is used to monitor the drainage situation in real time and judge whether there is condensed water discharge in combination with the vision device;

[0067] The data recording module is used to record the data and judgment results of each detection and automatically generate a detection report.

[0068] Specifically, first, the installation module is used to set a small ball valve between the cut-off valve and the root ball valve. As the starting point of the entire detection process, arranging the small ball valve at this installation position can make it the core component of the detection section and provide a physical path for subsequent discharge and observation. By setting the small ball valve outside the main control pipeline of the system, an independent discharge node is formed, which neither affects the main process nor can respond to the detection requirements in real time;

[0069] On this basis, the control module is used to control the root ball valve to be in the closed state when the detection process starts, so that the cut-off valve, the small ball valve and the intermediate pipe section form a closed detection section cavity. This control action can be manually performed by an operator or triggered regularly or remotely through an automated control system. Through the precise control of the root ball valve, a static fluid environment is formed inside the system, which is conducive to judging the retention of condensed water and pressure decay and becomes the basic working condition for detecting internal leakage;

[0070] Subsequently, the discharge module is activated after the detection section is formed to control the opening of the small ball valve. If there is a slight internal leakage in the cut-off valve, the pressure will drive the condensed water to flow into the branch where the small ball valve is located and be discharged from it. This module is built integrally with the installation module, which simplifies the system layout and ensures the reliability of the channel and the low-resistance discharge characteristics. This discharge behavior not only has the discharge function but also constitutes a key trigger signal for internal leakage detection, providing a clear judgment basis for the observation module;

[0071] The observation module is specifically used for the real-time monitoring of the fluid state during the discharge process. By introducing a transparent drainage cavity or visual auxiliary devices, such as transparent windows, graduated fluid indicators, etc., the operator can directly judge whether there is condensed water flowing out with the naked eye or an auxiliary imaging device, so as to infer whether there is internal leakage in the cut-off valve. The design of this module emphasizes intuitive visibility and interference suppression ability. By optimizing the geometric and optical characteristics of the discharge path, the problems of poor visibility and difficult discrimination in traditional observation are effectively solved.

[0072] Finally, the data recording module is responsible for archiving the operation information of the entire system. It not only records the detection time, observation conclusion, and drainage status each time, but also can structure the recording results to generate a detection report for the reference of subsequent maintenance personnel. This module can be connected to the upper management platform or integrated with local storage functions, supporting data traceability and multi-cycle status comparison. More importantly, once the system detects internal leakage, its judgment result will be automatically or promptingly introduced into the maintenance plan to form a closed-loop response mechanism of "detection - judgment - maintenance";

[0073] Through the modular design concept, the traditionally scattered and highly manual-dependent condensate detection process is systematized and streamlined, and a structure system that can be embedded and maintained is constructed. The core lies in converting the physical judgment signal (condensate outflow) into a system behavior signal (maintenance trigger), achieving the functional transition from simple observation to data-driven, and having extensive engineering application value and technical expansion potential.

[0074] The observation module is provided with a remote monitoring module for remotely operating and observing the detection process, providing real-time alarm and data analysis.

[0075] Specifically, first, on the basis of the basic visual detection function, the observation module adds a remote monitoring module, which can realize remote operation and real-time observation of the detection process. Through this remote monitoring module, the operator can conduct real-time monitoring of the detection process in the remote control center without the need for on-site manual observation or intervention. This remote operation not only improves the safety of the staff, avoids unnecessary on-site exposure, but also greatly improves the monitoring efficiency, especially suitable for large or remote pipeline systems, with significant time and space advantages;

[0076] Secondly, the remote monitoring module provides a real-time alarm function, which can automatically identify abnormal situations and send alarm signals during the detection process. For example, during the detection process, if abnormal condensate outflow, valve leakage exceeding the limit, or discharge channel blockage is observed, the remote monitoring module will immediately capture these abnormal behaviors through the set threshold conditions and feedback them to the remote operator in multiple ways such as sound, image, or digital signal. This function greatly enhances the early warning ability of the system, reduces operation errors caused by human negligence or information lag, and ensures the stability and safety of the system operation.

[0077] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for inspecting internal leakage of an external pressure cut-off valve of a vulcanizer, characterized in that, It includes the following steps: In the external pressure condensate drainage system of the vulcanizer, install a small ball valve on the pipeline between the cut-off valve and the root ball valve; With the cut-off valve in the closed state, first close the root ball valve to form a closed detection section and keep the pipeline pressure stable; Then open the small ball valve to allow the condensate to drain through the small ball valve and observe whether there is condensate draining from the small ball valve; If condensate drains from the small ball valve, it is determined that there is internal leakage in the cut-off valve. If no condensate drains from the small ball valve, it is determined that there is no internal leakage in the cut-off valve; After the judgment is completed, close the small ball valve and restore the root ball valve to its original state for normal operation.

2. The method for checking internal leakage of the external pressure cut-off valve of a vulcanizer according to claim 1, characterized in that: The small ball valve is used to assist in internal leakage detection. After installing the small ball valve, check the sealing performance and pressure resistance of the pipe section where the small ball valve is located. The material of the small ball valve is made of stainless steel or copper alloy.

3. The method for checking internal leakage of the external pressure cut-off valve of a vulcanizer according to claim 1, wherein: The connection method of the small ball valve includes threaded connection, welding or flange connection. The opening and closing of the small ball valve are controlled manually by the operator or by an electromagnetic valve.

4. The method for checking internal leakage of the external pressure cut-off valve of a vulcanizer according to claim 1, characterized in that: After closing the root ball valve, wait for 10 to 20 seconds to make the change of the residual pressure and temperature inside the system tend to balance, so as to stabilize the pressure in the detection section.

5. The method for checking internal leakage of the external pressure cut-off valve of a vulcanizer according to claim 1, characterized in that: The observation step includes observing whether the condensate flows out by the naked eye of an operator or assisting in the judgment through a transparent drainage cavity.

6. The method for checking internal leakage of the external pressure cut-off valve of a vulcanizer according to claim 1, wherein: The judgment step further includes recording the detection result and including it in the subsequent maintenance plan when there is internal leakage in the cut-off valve.

7. A system applied to the internal leakage inspection of the external pressure cut-off valve of a vulcanizer, and a method applied to the internal leakage inspection of the external pressure cut-off valve of a vulcanizer according to any one of claims 1-6, characterized in that, It includes: An installation module, used to install a small ball valve between the cut-off valve and the root ball valve and detect whether there is internal leakage; A control module, used to control the closing of the root ball valve during the detection process to form a detection section in the system; A drainage module, used to open the small ball valve during internal leakage detection, drain the condensate and allow the observation and judgment of the drainage situation; An observation module, used to monitor the drainage situation in real time and judge whether there is condensate drainage in combination with a vision device; A data recording module, used to record the data and judgment results of each detection and automatically generate a detection report.

8. The system for checking internal leakage of the external pressure cut-off valve of a vulcanizer according to claim 7, characterized in that: The observation module is provided with a remote monitoring module, used for remote operation and observation of the detection process, and providing real-time alarm and data analysis.

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