Cable terminal joint sealing method and device, electronic equipment and storage medium

Abstract

The invention discloses a cable terminal joint sealing method and device, electronic equipment and a storage medium, and the method comprises the steps: determining a sealing performance degree value of cable terminal sealing equipment for a target cable terminal when the target cable terminal and the cable terminal sealing equipment are in a connection state, obtaining a target sealing performance degree value, and determining the sealing performance degree value of the target cable terminal; when the target sealing performance degree value is smaller than a preset sealing performance degree value, first prompt information is generated and used for prompting that the sealing performance between the cable terminal sealing equipment and the target cable terminal is poor, and when the target sealing performance degree value is larger than or equal to the preset sealing performance degree value, second prompt information is generated and used for prompting that the sealing performance between the cable terminal sealing equipment and the target cable terminal is poor. The second prompt information is used for prompting to keep the connection between the target cable terminal and the cable terminal sealing equipment, and allowing the cable terminal sealing equipment to seal the joint of the target cable terminal. According to the embodiment of the invention, the sealing performance of the cable terminal joint can be accurately detected.

Description

Technical Field

[0001] This invention relates to the field of cable terminal joint sealing technology, and in particular to a cable terminal joint sealing method, device, electronic equipment, and storage medium. Background Technology

[0002] Cable termination joints are critical components connecting cables to electrical equipment. The sealing performance of cable termination joints directly affects the safe operation of cable systems. In fields such as power transmission and communication, cable termination joints need to operate in complex environments for extended periods. If the seal is poor, external moisture and impurities can easily penetrate the joint, leading to decreased insulation performance, conductor corrosion, or signal transmission interruption. In severe cases, this can cause safety accidents such as short circuits and equipment burnout. Currently, cable termination sealing mostly relies on mechanical seal structures or sealant potting, making it impossible to accurately test the sealing performance of cable termination joints. Therefore, how to accurately test the sealing performance of cable termination joints is an urgent problem to be solved. Summary of the Invention

[0003] This application provides a cable terminal joint sealing method, apparatus, electronic device, and storage medium, which can accurately detect the sealing performance of the cable terminal joint.

[0004] In a first aspect, embodiments of this application provide a cable terminal joint sealing method, applied to cable terminal sealing equipment, the cable terminal joint sealing method comprising:

[0005] With the target cable terminal and the cable terminal sealing device in a connected state, the sealing performance level of the cable terminal sealing device for the target cable terminal is determined to obtain the target sealing performance level value.

[0006] When the target sealing performance value is less than the preset sealing performance value, a first prompt message is generated. The first prompt message is used to indicate that the sealing performance between the cable terminal sealing device and the target cable terminal is poor.

[0007] When the target sealing performance value is greater than or equal to the preset sealing performance value, a second prompt message is generated. The second prompt message is used to prompt that the connection between the target cable terminal and the cable terminal sealing device be maintained, and that the joint of the target cable terminal be sealed by the cable terminal sealing device.

[0008] Secondly, this application provides a cable terminal joint sealing device, which is applied to cable terminal sealing equipment. The cable terminal joint sealing device includes: a determining unit and a processing unit.

[0009] The determining unit is used to determine the sealing performance level of the cable terminal sealing device to the target cable terminal when the target cable terminal and the cable terminal sealing device are in a connected state, and to obtain the target sealing performance level value.

[0010] The processing unit is configured to generate a first prompt message when the target sealing performance value is less than a preset sealing performance value. The first prompt message is used to indicate that the sealing performance between the cable terminal sealing device and the target cable terminal is poor.

[0011] When the target sealing performance value is greater than or equal to the preset sealing performance value, a second prompt message is generated. The second prompt message is used to prompt that the connection between the target cable terminal and the cable terminal sealing device be maintained, and that the joint of the target cable terminal be sealed by the cable terminal sealing device.

[0012] Thirdly, embodiments of the present invention provide an electronic device, including: a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor to cause the electronic device to perform the method as described in the first aspect.

[0013] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program that is executed by a processor to implement the method as described in the first aspect.

[0014] Fifthly, embodiments of the present invention provide a computer program product including a non-transitory computer-readable storage medium storing a computer program, such that a computer performs the method as described in the first aspect.

[0015] Implementing the embodiments of the present invention has the following beneficial effects:

[0016] As can be seen, the cable terminal joint sealing method described in this embodiment of the invention is applied to a cable terminal sealing device. When the target cable terminal and the cable terminal sealing device are in a connected state, the sealing performance level of the cable terminal sealing device on the target cable terminal is determined, resulting in a target sealing performance level value. When the target sealing performance level value is less than a preset sealing performance level value, a first prompt message is generated. This first prompt message indicates that the sealing performance between the cable terminal sealing device and the target cable terminal is poor. When the target sealing performance level value is greater than or equal to the preset sealing performance level value, a second prompt message is generated. This second prompt message indicates that the connection between the target cable terminal and the cable terminal sealing device should be maintained, and that sealing of the joint of the target cable terminal by the cable terminal sealing device is permitted. This allows for accurate detection of the sealing performance of the cable terminal joint. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0018] Figure 1 This is a flowchart of a cable terminal joint sealing method provided in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the structure of a cable terminal sealing device provided in an embodiment of this application;

[0020] Figure 3 This is a flowchart illustrating how to determine a target sealing performance level value according to an embodiment of this application;

[0021] Figure 4 This is another flowchart for determining the target sealing performance level value provided in the embodiments of this application;

[0022] Figure 5 This is a flowchart illustrating the sealing of a terminal joint of a cross-linked polyethylene cable according to an embodiment of this application;

[0023] Figure 6 This is a flowchart of a method for excluding a preset gas, provided in an embodiment of this application;

[0024] Figure 7 This is a schematic diagram of the structure of a cable terminal joint sealing device provided in the embodiments of this application;

[0025] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present application.

[0027] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0028] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0029] Please see Figure 1 , Figure 1 This is a flowchart of a cable termination joint sealing method provided in the embodiments of this application, including but not limited to the following steps:

[0030] S101: With the target cable terminal and the cable terminal sealing device in a connected state, determine the sealing performance level of the cable terminal sealing device for the target cable terminal, and obtain the target sealing performance level value.

[0031] In this embodiment, the target cable terminal is first connected to the cable terminal sealing device using a preset method. When the target cable terminal is connected to the cable terminal sealing device, that is, when the target cable terminal and the cable terminal sealing device are in a connected state, the sealing performance level of the cable terminal sealing device for the target cable terminal is determined to obtain the target sealing performance level value. Thus, the sealing performance of the cable terminal sealing device for the target cable terminal can be determined based on the target sealing performance level value.

[0032] It should be explained that the cable terminal sealing device is mainly used to seal the joints of the target cable terminal. It can be connected to the cable terminal through the split structure of the cable terminal sealing device, and judge whether the sealing performance meets the standard. When the sealing performance is sufficient, the cable terminal joint can be sealed to ensure the sealing effect. If the sealing performance is insufficient, a prompt will be issued, thereby ensuring that the cable terminal joint is in a good sealing state, preventing problems such as gas leakage, and ensuring the normal operation and sealing reliability of the cable terminal.

[0033] In this embodiment, a preset gas can be injected into the gap space after the two are connected by a pressurizing device. When the pressure reaches the first pressure value, the vent is closed. After a first preset time period, a second pressure value is obtained, the pressure difference is calculated, and the gas leakage rate is determined in combination with the time period. Then, the first optimization factor is obtained by referring to the average temperature of the target cable terminal, and the target sealing performance value is optimized. Alternatively, a preset volume of preset gas can be injected into the gap space, the pressure change data within a second preset time period is obtained, and a linear fit is performed to obtain the pressure change slope, which determines the corresponding second sealing performance value. At the same time, the insulation resistance change data of the target cable terminal within the time period is combined to obtain the insulation resistance change slope, and a second optimization factor is determined to optimize the second sealing performance value, and finally the target sealing performance value is obtained.

[0034] S102: When the target sealing performance value is less than the preset sealing performance value, a first prompt message is generated.

[0035] In this embodiment, the first prompt information is used to indicate that the sealing performance between the cable terminal sealing device and the target cable terminal is poor.

[0036] If the target sealing performance value is less than the preset sealing performance value, it indicates that the sealing effect of the cable terminal sealing device on the target cable terminal has not met the requirements. Therefore, the user should be reminded to replace the cable terminal sealing device. Thus, a first prompt message needs to be generated to indicate that the sealing performance between the cable terminal sealing device and the target cable terminal is poor.

[0037] Specifically, when the target sealing performance value is less than the preset sealing performance value, it means that the sealing effect between the cable terminal sealing device and the target cable terminal has not met the preset qualified standard, indicating a problem with a loose seal. At this point, a first warning message is generated. Its core function is to clearly convey to the operator that the current sealing condition is unqualified. The first warning message, as a specific warning, must contain sufficiently detailed information to guide subsequent operations. It should not only clearly state the conclusion that the sealing performance between the cable terminal sealing device and the target cable terminal is poor, but also supplement possible causes of the poor seal (such as suspected insufficient deformation of the inner metal sealing ring, loose threaded connections, etc., which can be deduced based on pressure drop characteristics or leak point location results in the test data), and provide preliminary handling suggestions (such as retightening the metal sleeve to the standard torque, checking for seal ring damage and replacing it). Such a warning message helps operators quickly locate the problem and take targeted measures to prevent external moisture and impurities from entering the cable terminal due to seal failure, thereby ensuring cable insulation performance and operational safety.

[0038] It should be explained that the first warning message, as a warning signal indicating poor sealing performance, needs to be delivered to the operator in a conspicuous and timely manner. This can be achieved through the local audible and visual alarms of the cable terminal sealing equipment (such as a high-frequency flashing red warning light accompanied by a continuous buzzer or voice announcement "Sealing performance is substandard, please check"); the control terminal connected to the equipment (such as a red pop-up window on the operation panel displaying "Poor sealing performance, possible leakage" and a hint of the suspected leakage location); or through a remote management system (such as an operation and maintenance platform pushing alarm information to the operator's mobile phone software, along with test data such as pressure change curves). In addition, it can also be linked to a printing device to output a paper warning sheet (marking the test time, key parameters, and preliminary troubleshooting suggestions) to ensure that operators can quickly perceive and respond to sealing abnormalities and promptly carry out maintenance and adjustments in different operating scenarios.

[0039] S103: When the target sealing performance level value is greater than or equal to the preset sealing performance level value, a second prompt message is generated.

[0040] In this embodiment, the second prompt information is used to prompt that the target cable terminal be kept connected to the cable terminal sealing device, and to allow the joint of the target cable terminal to be sealed by the cable terminal sealing device.

[0041] If the target sealing performance value reaches or exceeds the preset sealing performance value, it means that the sealing effect meets the standard. At this time, the operator should be prompted to maintain the current connection between the cable terminal and the sealing device. No disassembly or adjustment is required. It is permissible to continue to seal the cable terminal joint and put it into use through the sealing device.

[0042] When the target sealing performance value is greater than or equal to the preset sealing performance value, it indicates that the sealing effect between the cable terminal sealing device and the target cable terminal has reached the preset qualified standard through pressure testing (such as quantitative indicators such as pressure difference, leakage rate or pressure change slope). It can effectively block the exchange of substances between the external environment (such as moisture, impurities, and gases) and the inside of the joint. At this time, a second prompt message is generated. Its core function is to convey the signal that the current sealing status meets the standard to the operator or system, and provide clear guidance for subsequent operations.

[0043] The second prompt message must include two key elements. First, it clearly indicates that the target cable terminal should remain connected to the cable terminal sealing device. This means that there is no need to disassemble or adjust the completed connection structure (such as the thread engagement of the female and female metal sleeves, the position of the sealing ring, etc.) to avoid damaging the existing seal due to misoperation. Second, it indicates that the joint of the target cable terminal can be sealed through the cable terminal sealing device. This means that the current device status meets the conditions for formal sealing, and it can be confirmed that the sealing device has entered the working state. Relying on its structure (the cooperation of the female and female metal sleeves, sealing rings, etc.), it can achieve a long-term effective seal for the cable terminal joint, ensuring that the joint maintains stable insulation performance and is protected from external corrosion in the operating environment. The second prompt message not only ensures the continuity of operation but also provides the final confirmation of the sealing layer for the safe operation of the cable terminal.

[0044] It should be explained that the second prompt message, as a confirmation signal that the sealing performance meets the standards, can be sent to the operator in a variety of intuitive and non-intrusive ways. For example, the local status indicator light on the cable terminal sealing device can display a stable green color, while the operation panel display shows a blue or black text prompt: "Sealing performance is qualified. Please maintain the current connection status and allow the joint sealing operation." Alternatively, the control system connected to the cable terminal sealing device (such as a computer client or dedicated operation software) can generate a compliance record pop-up window, along with key parameters such as the sealing performance level. If remote monitoring is involved, the maintenance platform will push a notification message to the operator's mobile terminal, clearly including the instruction: "No connection adjustment is required; the sealing process can be started." In some scenarios, the device's built-in voice module can also issue a short prompt tone accompanied by a voice broadcast: "Sealing is qualified. Maintain the connection and complete the sealing." This ensures that the operator can clearly understand the current status whether on-site or remotely, and proceed with the subsequent sealing operation safely and orderly.

[0045] It should be noted that when the target sealing performance level value fails to reach the preset sealing performance level value, the first prompt message warns of poor sealing performance between the cable terminal sealing device and the target cable terminal, indicating a sealing problem. Conversely, when the target sealing performance level value is greater than or equal to the preset sealing performance level value, the second prompt message informs that the connection can be maintained and allows sealing of the cable terminal joint through the sealing device, confirming a satisfactory sealing condition. The advantage of generating these two prompt messages is that they provide clear and targeted guidance based on the actual assessment results of the sealing performance. This includes timely warnings when the sealing is poor, reminding relevant personnel to investigate the problem and avoid subsequent operational failures due to poor sealing; and explicit permission to continue operation when the sealing meets the standard, ensuring the standardized progress of the sealing process, guaranteeing the reliability and safety of the cable terminal sealing, and achieving effective control over the sealing process.

[0046] It can be seen that by evaluating the sealing performance and generating corresponding prompts when the target cable terminal is connected to the sealing device, precise control of the sealing process can be achieved. When the sealing performance fails to meet the standard, the first prompt can promptly warn of the sealing problem, prompting relevant personnel to investigate and make adjustments, such as reinstalling the sealing components, to prevent moisture and impurities from entering during subsequent operation due to sealing defects, thus ensuring cable safety. When the sealing performance meets the standard, the second prompt clearly permits the connection to be maintained and the sealing operation to be completed, ensuring that the sealing process is carried out in a standardized manner. This not only reduces ineffective operations and improves the reliability and efficiency of cable terminal joint sealing, but also provides an important guarantee for the long-term stable operation of the cable.

[0047] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of a cable terminal sealing device provided in an embodiment of this application. The cable terminal sealing device 200 includes a female metal sleeve 201, an inner metal sealing ring 202, a female metal sleeve 203, a vent 204, and a rubber vent tube 205.

[0048] In this embodiment, the inner metal sealing ring 202 is placed on the unthreaded end of the female metal sleeve 201. The female metal sleeve 201 includes an unthreaded end and a threaded end, with the unthreaded end being smaller than the threaded end. The target cable 100 terminal is nested from the unthreaded end of the female metal sleeve 201 to the threaded end of the female metal sleeve 201. One end of the daughter metal sleeve 203 is threadedly connected to the threaded end of the female metal sleeve 201. The other end of the daughter metal sleeve 203 is connected to the vent 204, which is either open or closed. The rubber vent tube 205 is connected to the vent 204.

[0049] The mother metal sleeve 201, as the core load-bearing component of the equipment, is divided into a threadless end and a threaded end. The threadless end is smaller than the threaded end. The threadless end is the entrance for the target cable 100 terminal, which allows the cable terminal to be nested into and extended to the threaded end, providing initial installation positioning and structural support for the cable terminal. The threaded end is connected to the daughter metal sleeve 203 through threads, realizing the stable assembly of the two components and forming the main frame of the sealing equipment.

[0050] The inner metal sealing ring 202 is placed on the unthreaded end of the female metal sleeve 201. When the target cable 100 terminal is nested into the female metal sleeve 201, the inner metal sealing ring 202 will fit tightly against the outer wall of the cable terminal. Utilizing the rigidity and sealing properties of the metal material, the first sealing barrier is formed between the female metal sleeve 201 and the cable terminal, reducing gaps and preventing external gases, liquids, etc. from entering or internal media from leaking.

[0051] One end of the sub-metal sleeve 203 is connected to the threaded end of the female metal sleeve 201 via a thread, which serves to extend the overall structure of the sealing device and connect subsequent components. The other end is connected to the vent 204. The metal material of the sub-metal sleeve 203 ensures the strength and stability of the structure, allowing the vent 204 to be installed securely. At the same time, it cooperates with the female metal sleeve 201 to form a relatively closed space, providing a structural basis for ensuring sealing performance.

[0052] The vent 204 is connected to the end of the sub-metal sleeve 203 away from the mother metal sleeve 201, and can be in an open or closed state. When open, it can be connected to an external pressurization device through the rubber vent tube 205, which facilitates gas injection, discharge or pressure detection operations. When closed, it can cooperate with other components to form a closed space to ensure the maintenance of the sealing state.

[0053] The rubber vent tube 205 is connected to the vent 204. Because rubber has good elasticity and sealing properties, it can achieve a tight connection with the vent 204 and can also be flexibly connected to external equipment. When the vent 204 is open, it acts as a channel for gas transmission, while preventing gas leakage at the connection point, thus ensuring the functionality and sealing of the entire sealing device.

[0054] As can be seen, the cable terminal sealing device 200 forms a main frame through the threaded connection between the female metal sleeve 201 and the female metal sleeve 203. Combined with the inner metal sealing ring 202, the initial seal is achieved by the tight fit between the unthreaded end of the female metal sleeve 201 and the terminal of the target cable 100. At the same time, the vent 204 and the rubber vent tube 205 can be used to flexibly open or close the device to meet the needs of air pressure regulation and testing. The overall structure ensures the stability and strength of the connection through metal components, and enhances the sealing performance with the help of the sealing ring and rubber tube. It can effectively seal and protect the cable terminal joint, reduce the impact of external gases and liquids on the cable terminal, and facilitate the monitoring and protection of the sealing status through the venting structure, ultimately improving the sealing reliability and safety of the cable terminal joint.

[0055] Please see Figure 3 , Figure 3 This is a flowchart of a method for determining a target sealing performance level, provided in an embodiment of this application, including but not limited to the following steps:

[0056] S301: Control the pressurization device to inject preset gas into the gap space between the target cable terminal and the cable terminal sealing device through the vent.

[0057] In this embodiment, after the pressurizing device is connected to the rubber vent of the cable terminal sealing device, the working state of the vent is adjusted to the open state, and the pressurizing device is controlled to inject a preset gas into the gap space between the target cable terminal and the cable terminal sealing device through the vent. The pressurizing device in this embodiment is a device capable of generating gas pressure and injecting a preset gas into the gap space between the cable terminal sealing devices; it can be a small air pump, a pressure control device, a manual air pump, etc. The preset gas in this embodiment is a chemically stable gas that does not react with the cable terminal and sealing device components and does not interfere with the sealing performance test; it can be dry air, nitrogen, or an inert gas, etc.

[0058] After the rubber vent pipes of the pressurizing device and the cable terminal sealing device are connected, the vent is first switched to the open state to ensure unobstructed gas flow. Then, the pressurizing device is operated to start working, so that the preset gas is transmitted along the rubber vent pipe, passes through the open vent, and is finally injected into the gap space between the target cable terminal and the cable terminal sealing device. This operation can fill the gap space between the cable terminal sealing devices with preset gas to establish an initial pressure environment. The tight connection of the rubber vent pipe prevents gas leakage during transmission, and the open state of the vent provides the necessary path for the gas to enter the gap space, providing a basis for subsequent judgment of sealing performance by monitoring pressure changes.

[0059] S302: When the pressure between the target cable terminal and the cable terminal sealing device is the first pressure value, the working state of the vent is adjusted to the closed state.

[0060] In this embodiment, when the pressure formed by filling the gap space between the target cable terminal and the cable terminal sealing device with preset gas reaches a preset first pressure value, the vent that was originally open is switched to a closed state. This facilitates the subsequent determination of the sealing performance between the cable terminal sealing device and the target cable terminal based on the change in the pressure value between the target cable terminal and the cable terminal sealing device.

[0061] S303: After a first preset time period, obtain the pressure value between the target cable terminal and the cable terminal sealing device to obtain a second pressure value.

[0062] In this embodiment, the first preset time period can be determined according to the detection requirements, and can be several hours, one day, or one month, etc., without limitation. After filling the gap space between the target cable terminal and the cable terminal sealing device with preset gas and closing the vent, so that the pressure in the space reaches the first pressure value, wait for the first preset time period. After this period ends, the current pressure in the gap space is measured by a pressure detection device, and the measurement result is the second pressure value. If the sealing performance between the cable terminal sealing device and the target cable terminal is good, then there will not be a large difference between the second pressure value and the first pressure value. If the second pressure value differs too much from the first pressure value, it indicates that the sealing performance between the cable terminal sealing device and the target cable terminal is not ideal.

[0063] S304: Determine the pressure difference between the first pressure value and the second pressure value.

[0064] In this embodiment, the first pressure value is the initial pressure value reached in the gap space between the target cable terminal and the cable terminal sealing device when a preset gas is filled and the vent is closed. The second pressure value is the pressure measurement value in the gap space between the target cable terminal and the cable terminal sealing device after a first preset time period. Subtracting the smaller pressure value from the larger pressure value yields the pressure difference between the first pressure value and the second pressure value. This pressure difference is a key indicator for judging the sealing performance. If the difference is small and within the allowable error range, it indicates that the sealing performance of the gap space is good and the gas leakage is minimal. If the difference exceeds the set threshold, it indicates that there is a significant gas leakage and the sealing performance does not meet the requirements.

[0065] S305: Determine the target sealing performance level value based on the pressure difference.

[0066] In this embodiment, the gas leakage rate can be determined based on the pressure difference, and then the sealing performance of the cable terminal sealing device on the target cable terminal can be determined to obtain the target sealing performance value.

[0067] For example, the gas leakage rate is determined based on the pressure difference and the first preset time period. Specifically, the pressure drop per unit time, i.e., the gas leakage rate, can be obtained by dividing the calculated pressure difference by the duration of the first preset time period. For instance, if the pressure difference is 0.2 MPa and the first preset time period is 2 hours, the calculated gas leakage rate is 0.1 MPa / hour. The gas leakage rate directly reflects the speed at which gas leaks within the gap space; a higher rate indicates poorer sealing performance.

[0068] For example, a first sealing performance value corresponding to the gas leakage rate is determined. Specifically, it can be a preset mapping relationship between the gas leakage rate and the sealing performance value. Based on this mapping relationship, the first sealing performance value corresponding to the gas leakage rate can be determined.

[0069] For example, the average temperature of the target cable terminal during the first preset time period is obtained. Specifically, when the temperature rises, even without gas leakage, the gas in the gap space will expand due to heat, causing the pressure to rise. When the temperature drops, the gas contracts, causing the pressure to drop. Even if the actual leakage is small, it may appear as a large pressure difference. If the influence of temperature is ignored and the leakage rate is directly calculated using the pressure difference to determine the sealing performance value, misjudgment may occur. In high-temperature environments, gas expansion may mask the pressure drop caused by actual leakage, making the pressure difference smaller and thus underestimating the leakage, resulting in an overestimation of the sealing performance value. In low-temperature environments, gas contraction may amplify the pressure difference, making the calculated leakage rate larger and leading to an underestimation of the sealing performance value. Therefore, it is necessary to first obtain the average temperature of the target cable terminal during the first preset time period.

[0070] For example, a first optimization factor corresponding to the average temperature is determined. Specifically, it can be a preset mapping relationship between a stable temperature and an optimization factor. Based on this mapping relationship, the first optimization factor corresponding to the average temperature can be determined.

[0071] For example, the reference sealing performance value is optimized based on the first optimization factor to obtain the target sealing performance value. Specifically, the target sealing performance value can be calculated according to the following formula:

[0072] Target sealing performance value = Reference sealing performance value × (1 + First optimization factor);

[0073] The reference sealing performance value can be optimized based on the first optimization factor according to the above formula to obtain the target sealing performance value.

[0074] As can be seen, by calculating the gas leakage rate using the pressure difference and the first preset time period, the quality of the sealing performance is transformed into a quantifiable dynamic indicator, avoiding the one-sidedness of judging solely by the static pressure difference. Then, based on the leakage rate, the first sealing performance level value is determined, achieving a preliminary quantitative classification of sealing performance. On this basis, considering the significant impact of temperature on gas pressure, temperature changes can cause gas expansion or contraction, interfering with the accuracy of the leakage rate. By obtaining the average temperature and matching the corresponding first optimization factor, the initially obtained reference sealing performance level value is corrected. The final target sealing performance level value can eliminate temperature interference and better reflect the actual sealing state. This not only achieves a quantitative assessment of sealing performance but also improves the accuracy of the results through the optimization of environmental factors. First, a preset gas is injected into the gap space through a pressurization device to reach the first pressure value, ensuring the consistency of the detection starting point. After closing the vent, the pressure is maintained for a first preset time period, allowing any potential leaks to be fully reflected in the pressure changes. Then, the second pressure value is obtained and the pressure difference is calculated, directly quantifying the pressure loss caused by the leak. Finally, the target sealing performance value is determined based on this difference. This method not only eliminates the interference of subjective judgment but also achieves a quantifiable assessment of sealing performance through the intuitive indicator of pressure change. It provides a scientific basis for judging whether the seal meets the standards and whether maintenance is required, effectively avoiding problems such as gas leakage, intrusion of external moisture or impurities due to poor sealing, and ensuring the safe and stable operation of the cable terminal.

[0075] Please see Figure 4 , Figure 4 This is another flowchart for determining the target sealing performance level value provided by the embodiments of this application, including but not limited to the following steps:

[0076] S401: Control the pressurizing device to fill the gap space between the target cable terminal and the cable terminal sealing device with a preset volume of gas through the vent.

[0077] In this embodiment, after the pressurizing device is connected to the rubber vent tube of the cable terminal sealing device, the working state of the vent is adjusted to the open state, and the pressurizing device is controlled to fill the gap space between the target cable terminal and the cable terminal sealing device with a preset volume of gas through the vent.

[0078] First, connect and fix the pressurizing device to the rubber vent of the cable terminal sealing device to ensure that there is no additional leakage in the connection seal. Then, open the vent, start the pressurizing device, and fill the gap space between the cable terminal and the sealing device with a specific volume of preset gas. By quantitatively filling the gas, a stable initial condition is provided for subsequent pressure change monitoring.

[0079] S402: Obtain pressure change data between the target cable terminal and the cable terminal sealing device within a second preset time period.

[0080] In this embodiment, the second preset time period can be a preset time period, such as an hour, a day, or a month, and is not limited here.

[0081] The pressure detection device continuously monitors and records the pressure value of the gap space between the target cable terminal and the cable terminal sealing device during the second preset time period, and collects the pressure data that changes over time during the second preset time period.

[0082] The pressure change data between the target cable terminal and the cable terminal sealing device within the second preset time period can reflect the dynamic changes in pressure within the gap space due to factors such as gas filling, possible leakage, and environmental factors during that time period. This data forms the basis for subsequent analysis of pressure change trends and calculation of pressure change slope to evaluate sealing performance.

[0083] S403: Perform linear fitting based on the pressure change data to obtain a pressure change line.

[0084] In this embodiment, the pressure change data within the second preset time period can be processed using methods such as the least squares method. A coordinate system is established with time as the horizontal axis and pressure as the vertical axis. The pressure value corresponding to each time point is marked as a coordinate point in the coordinate system. Then, an algorithm is used to find a straight line that best fits these data points. This straight line is the pressure change line. It can filter out interference factors such as instantaneous fluctuations and measurement errors that may exist in the data, and present the overall trend of pressure change over time in a simple linear form. This makes the originally scattered pressure data show a clear regularity, providing an intuitive basis for subsequent calculation of the pressure change slope.

[0085] S404: Determine the slope of the pressure change line to obtain the pressure change slope.

[0086] In this embodiment, by selecting any two points on the pressure change line, the slope of the pressure change line can be calculated, thus obtaining the pressure change slope.

[0087] S405: Determine the target sealing performance level value based on the pressure change slope.

[0088] In this embodiment, a preliminary sealing performance value can be determined by a preset mapping relationship between the pressure change slope and the sealing performance value. Then, the influence of the insulation resistance change data of the target cable terminal during the second preset time period on the sealing performance value is considered to obtain the target sealing performance value.

[0089] It can be seen that by pressurizing the device to fill the gas with a preset volume of specific gas, controllable and stable initial conditions are provided for the sealing performance test, ensuring the consistency of the test environment. Secondly, by continuously acquiring pressure change data and performing linear fitting within a second preset time period, instantaneous fluctuations and measurement errors can be effectively filtered out. The slope of the pressure change line accurately reflects the overall trend of pressure change over time, and the magnitude of the slope reflects the tightness of the cable terminal sealing device's seal on the target cable terminal. Finally, the target sealing performance value is determined based on this slope, realizing a quantitative evaluation of sealing performance. This avoids the bias of subjective judgment and provides reliable data analysis basis for the maintenance of the cable terminal sealing status and troubleshooting, ensuring the safety and stability of equipment operation.

[0090] For example, a second sealing performance value corresponding to the pressure change slope is determined. Specifically, it can be a preset mapping relationship between the pressure change slope and the sealing performance value. Based on this mapping relationship, the second sealing performance value corresponding to the pressure change slope can be determined.

[0091] For example, the insulation resistance change data of the target cable terminal during the second preset time period can be obtained. Specifically, the insulation resistance value of the target cable terminal can be continuously monitored by an insulation resistance tester, and the resistance data corresponding to multiple time points can be recorded. Insulation resistance is a key indicator reflecting the performance of the cable insulation layer. Poor sealing may lead to the intrusion of water vapor and impurities, affecting the insulation resistance. Therefore, these data can help determine the actual impact of the sealing status on the cable performance. Thus, it is necessary to obtain the insulation resistance change data of the target cable terminal during the second preset time period.

[0092] For example, a straight line is fitted based on the insulation resistance change data to obtain a straight line of insulation resistance change. Specifically, a coordinate system is established with time as the horizontal axis and insulation resistance as the vertical axis. Data points are marked in the coordinate system, and then a straight line that best fits these points is generated by fitting methods such as the least squares method, thereby obtaining the straight line of insulation resistance change.

[0093] For example, the slope of the insulation resistance change line is determined to obtain the insulation resistance change slope. Specifically, two points can be arbitrarily selected on the insulation resistance change line to calculate the slope of the insulation resistance change line and obtain the insulation resistance change slope.

[0094] For example, a second optimization factor corresponding to the slope of the change in insulation resistance is determined. Specifically, it can be a preset mapping relationship between the slope of the change in insulation resistance and the optimization factor. Based on this mapping relationship, the second optimization factor corresponding to the slope of the change in insulation resistance can be determined.

[0095] For example, the second sealing performance level value is optimized based on the second optimization factor to obtain the target sealing performance level value. Specifically, the target sealing performance level value can be calculated according to the following formula:

[0096] Target sealing performance level value = Second sealing performance level value × (1 + Second optimization factor);

[0097] Based on the above formula, the second sealing performance value can be optimized using the second optimization factor to obtain the target sealing performance value.

[0098] It can be seen that by combining the dual indicators of pressure change and insulation resistance change, a more comprehensive and accurate assessment of the sealing performance of cable terminals is achieved. First, the slope of pressure change is used to determine the second sealing performance level value, which intuitively reflects the physical integrity of the seal from the perspective of gas leakage. On this basis, insulation resistance change data is introduced, and its change slope is obtained through linear fitting to determine the corresponding second optimization factor. This can correct the initial assessment results from the perspective of the impact on electrical performance, because poor sealing may lead to the intrusion of water vapor and impurities, thereby affecting the insulation resistance. This correction can make up for the limitations of a single pressure indicator. The final target sealing performance level value takes into account both the physical sealing state and the actual electrical performance impact, so that the assessment results of the sealing performance of the target cable terminal by the cable terminal sealing equipment can better reflect the actual operating state of the equipment.

[0099] Please see Figure 5 , Figure 5 This is a flowchart illustrating the sealing of a terminal joint of a cross-linked polyethylene cable according to an embodiment of this application, including but not limited to the following steps:

[0100] S501: Select a cross-linked polyethylene cable of a preset length and strip the outer portion of the cross-linked polyethylene cable terminal joint.

[0101] In this embodiment, stripping the outer portion of the cross-linked polyethylene cable terminal joint mainly includes the outermost protective structure and auxiliary functional layers. Specifically, this includes an outer sheath made of polyethylene or polyvinyl chloride, which provides corrosion and wear resistance; a metal shielding layer (mostly copper strip, copper wire, or aluminum strip) for uniform electric field and electromagnetic interference prevention; a semi-conductive resistive water layer located between the metal shielding layer and the insulation layer, which eliminates air gaps and improves electric field distribution; and a buffer layer or filling layer used in multi-core cables to fix the core wires and fill gaps. Stripping the outer portion of the cross-linked polyethylene cable terminal joint exposes the cross-linked polyethylene insulation layer and conductor of the cable core, allowing the subsequent sealing assembly to fit tightly against them and ensure a sealing effect.

[0102] S502: Place the inner metal seal ring on the unthreaded side of the female metal sleeve.

[0103] In this embodiment, the inner metal sealing ring (the annular metal component that performs the sealing function) is installed on the inside of the unthreaded end of the female metal sleeve (the fixed component in the sealing structure), so that it fits against the inner wall of the female metal sleeve, in preparation for subsequent tight bonding with the cable.

[0104] S503: Fit the unthreaded side of the female metal sheath onto the outside of the cross-linked polyethylene cable.

[0105] In this embodiment, the threaded side of the female metal sheath faces the outside of the cross-linked polyethylene cable.

[0106] Place the inner metal sealing ring-fitted female metal sleeve (with the unthreaded side facing forward) onto the portion of the cable terminal after the outer layer has been stripped, so that the unthreaded side is in contact with the cable surface, while the threaded side faces the outside of the cable terminal (to facilitate the subsequent connection of the sub-metal sleeve).

[0107] S504: Screw the female metal sleeve onto the threaded side of the female metal sleeve.

[0108] In this embodiment, the sub-metal sleeve is screwed onto the threaded side of the mother metal sleeve, and the pressure of the threaded connection causes the inner metal sealing ring to press against the cable surface, thereby enhancing the sealing effect.

[0109] S505: Connect the rubber vent tube to the vent and the metal sleeve.

[0110] In this embodiment, the vent can be opened or closed by pressurizing or depressurizing. The two ends of the rubber vent tube (flexible pipe) are respectively connected to a preset vent (an interface for gas entry and exit) and a sub-metal sleeve (allowing gas to enter the sealed space), forming a gas flow channel.

[0111] As can be seen, firstly, accurately removing the non-core structures (outer sheath, metal shielding layer, etc.) on the outside of the terminal clearly exposes the core insulation layer and conductor, providing a flat and clean foundation for the subsequent bonding of sealing components. Secondly, the pre-installation of the inner metal sealing ring and the female metal sleeve, the insertion of the female metal sleeve into the cable, and the threaded tightening of the female metal sleeve and the female metal sleeve, through mechanical pressure, make the sealing ring tightly adhere to the cable surface, forming the first physical sealing barrier, effectively preventing the intrusion of external moisture and impurities. Finally, the connection between the rubber vent tube and the vent, and the female metal sleeve, not only provides a pathway for subsequent gas pressure testing of sealing performance, but also allows for control of the vent state by pressurizing or depressurizing, ensuring the operability of the sealing test and the continuous stability of the sealing performance. The overall process takes into account structural fit, sealing reliability, and testing convenience, ultimately ensuring that the cable terminal joint is protected from external environmental influences during long-term operation, and constructing a tight and reliable sealing structure for the cross-linked polyethylene cable terminal joint.

[0112] It should be explained that when the target sealing performance value is greater than or equal to the preset sealing performance value, the preset gas in the gap space between the target cable terminal and the cable terminal sealing device is discharged through the vent. Please refer to [link / reference]. Figure 6 , Figure 6 This application provides a flowchart for excluding a preset gas, including but not limited to the following steps:

[0113] S601: Determine that the target sealing performance level value is greater than or equal to the preset sealing performance level value.

[0114] In this embodiment, when the target sealing performance value is greater than or equal to the preset sealing performance value, it indicates that the cable terminal joint can be sealed by the cable terminal sealing device. However, when testing the sealing performance of the cable terminal sealing device on the target cable terminal, a preset gas is injected into the gap space between the target cable terminal and the cable terminal sealing device. If it is necessary to maintain the connection between the target cable terminal and the cable terminal sealing device, and to seal the joint of the target cable terminal by the cable terminal sealing device, it is necessary to discharge the preset gas in the gap space between the target cable terminal and the cable terminal sealing device.

[0115] S602: Connect a negative pressure device to draw air from the vent.

[0116] In this embodiment, the negative pressure device is a device that can generate a pressure lower than the internal air pressure (negative pressure) of the gap space. It can be a rotary vane vacuum pump, a diaphragm vacuum pump, a Roots vacuum pump, as well as miniaturized negative pressure pumps and vacuum generators. These devices generate negative pressure to create a pressure difference and extract the preset gas from the gap space.

[0117] S603: The pressure change in the gap space between the target cable terminal and the cable terminal sealing device is monitored by a pressure detection device. When the pressure drops to a preset pressure value, the preset gas in the gap space is determined to be discharged.

[0118] In this embodiment, by installing pressure sensors, pressure gauges, and other pressure detection devices on the gap space or the connected ventilation pipe, the internal pressure changes are monitored in real time. As the preset gas is continuously drawn out, the pressure in the gap space will gradually decrease until it matches the preset pressure value. When the pressure reaches the preset pressure value, it indicates that the preset gas in the gap space has been basically discharged. At this time, the negative pressure equipment can be stopped and the vent can be closed to avoid excessive air extraction from causing additional stress on the sealing structure.

[0119] As can be seen, by first confirming that the target sealing performance meets the standards, the cable terminal sealing equipment has a reliable sealing foundation. Then, by using a negative pressure device to extract air through the vent, combined with a pressure detection device to monitor pressure changes, until the preset pressure value is reached, the preset gas in the gap space between the target cable terminal and the sealing equipment can be accurately discharged. This avoids residual gas from affecting the stability and tightness of the sealing structure, and also prevents excessive air extraction from causing additional stress damage to the sealing components. Ultimately, this ensures the long-term effectiveness of the cable terminal joint seal, reduces the risk of seal failure due to gas residue, and ensures the safe operation of the cable.

[0120] In summary, implementing the embodiments of the present invention has the following beneficial effects:

[0121] As can be seen, the cable terminal joint sealing method described in this embodiment of the invention is applied to a cable terminal sealing device. When the target cable terminal and the cable terminal sealing device are in a connected state, the sealing performance level of the cable terminal sealing device on the target cable terminal is determined, resulting in a target sealing performance level value. When the target sealing performance level value is less than a preset sealing performance level value, a first prompt message is generated. This first prompt message indicates that the sealing performance between the cable terminal sealing device and the target cable terminal is poor. When the target sealing performance level value is greater than or equal to the preset sealing performance level value, a second prompt message is generated. This second prompt message indicates that the connection between the target cable terminal and the cable terminal sealing device should be maintained, and that sealing of the joint of the target cable terminal by the cable terminal sealing device is permitted. This allows for accurate detection of the sealing performance of the cable terminal joint.

[0122] Please see Figure 7 , Figure 7This is a schematic diagram of the structure of a cable terminal joint sealing device provided in an embodiment of this application. It is applied to cable terminal sealing equipment. The cable terminal joint sealing device 700 includes: a determining unit 701 and a processing unit 702.

[0123] The determining unit 701 is used to determine the sealing performance level value of the cable terminal sealing device to the target cable terminal when the target cable terminal and the cable terminal sealing device are in a connected state, and to obtain the target sealing performance level value.

[0124] The processing unit 702 is used to generate a first prompt message when the target sealing performance value is less than the preset sealing performance value. The first prompt message is used to indicate that the sealing performance between the cable terminal sealing device and the target cable terminal is poor.

[0125] When the target sealing performance value is greater than or equal to the preset sealing performance value, a second prompt message is generated. The second prompt message is used to prompt that the connection between the target cable terminal and the cable terminal sealing device be maintained, and that the joint of the target cable terminal be sealed by the cable terminal sealing device.

[0126] In some possible implementations, the processing unit 702 is specifically used for:

[0127] The cable terminal sealing device includes a female metal sleeve, an inner metal sealing ring, a female metal sleeve, a vent, and a rubber vent tube;

[0128] The inner metal sealing ring is placed at the unthreaded end of the female metal sleeve; the female metal sleeve includes an unthreaded end and a threaded end, and the unthreaded end is smaller than the threaded end.

[0129] The target cable terminal is nested from the unthreaded end of the female metal sleeve to the threaded end of the female metal sleeve;

[0130] One end of the sub-metal sleeve is threaded to the threaded end of the mother metal sleeve; the other end of the sub-metal sleeve is connected to the vent; the vent is either open or closed.

[0131] The rubber vent tube is connected to the vent.

[0132] In some possible implementations, in determining the sealing performance level of the cable terminal sealing device for the target cable terminal and obtaining the target sealing performance level value, the processing unit 702 is specifically used for:

[0133] After the pressurizing device is connected to the rubber vent tube of the cable terminal sealing device, the working state of the vent is adjusted to the open state, and the pressurizing device is controlled to inject a preset gas into the gap space between the target cable terminal and the cable terminal sealing device through the vent.

[0134] When the pressure between the target cable terminal and the cable terminal sealing device is the first pressure value, the working state of the vent is adjusted to the closed state;

[0135] After a first preset time period, the pressure value between the target cable terminal and the cable terminal sealing device is obtained to obtain a second pressure value;

[0136] Determine the pressure difference between the first pressure value and the second pressure value;

[0137] The target sealing performance level is determined based on the pressure difference.

[0138] In some possible implementations, in determining the target sealing performance level value based on the pressure difference, the processing unit 702 is specifically configured to:

[0139] The gas leakage rate is determined based on the pressure difference and the first preset time period.

[0140] Determine a first sealing performance value corresponding to the gas leakage rate;

[0141] Obtain the average temperature of the target cable terminal during the first preset time period;

[0142] Determine the first optimization factor corresponding to the average temperature;

[0143] The reference sealing performance value is optimized based on the first optimization factor to obtain the target sealing performance value.

[0144] In some possible implementations, in determining the sealing performance level of the cable terminal sealing device for the target cable terminal and obtaining the target sealing performance level value, the processing unit 702 is specifically used for:

[0145] After the pressurizing device is connected to the rubber vent tube of the cable terminal sealing device, the working state of the vent is adjusted to the open state, and the pressurizing device is controlled to fill the gap space between the target cable terminal and the cable terminal sealing device with a preset volume of gas through the vent.

[0146] Acquire pressure change data between the target cable terminal and the cable terminal sealing device within a second preset time period;

[0147] A straight line is obtained by fitting the pressure change data;

[0148] Determine the slope of the pressure change line to obtain the pressure change slope;

[0149] The target sealing performance level is determined based on the slope of the pressure change.

[0150] In some possible implementations, in determining the target sealing performance level value based on the slope of the pressure change, the processing unit 702 is specifically used for:

[0151] Determine the second sealing performance value corresponding to the slope of the pressure change;

[0152] Obtain the insulation resistance change data of the target cable terminal during the second preset time period;

[0153] Based on the insulation resistance change data, a straight line is fitted to obtain the insulation resistance change line;

[0154] Determine the slope of the linear curve representing the change in insulation resistance to obtain the slope of the change in insulation resistance;

[0155] Determine the second optimization factor corresponding to the slope of the change in insulation resistance;

[0156] The second sealing performance level value is optimized based on the second optimization factor to obtain the target sealing performance level value.

[0157] In some possible implementations, the processing unit 702 is further specifically used for:

[0158] When the target sealing performance value is greater than or equal to the preset sealing performance value, the preset gas in the gap space between the target cable terminal and the cable terminal sealing device is discharged through the vent.

[0159] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. For example... Figure 8 As shown, the electronic device 800 includes a transceiver 801, a processor 802, and a memory 803. These are connected via a bus 804. The memory 803 stores computer programs and data, and the transceiver 801 can transmit data stored in the memory 803 to the processor 802. The program includes instructions for performing the following steps:

[0160] With the target cable terminal and the cable terminal sealing device in a connected state, the sealing performance level of the cable terminal sealing device for the target cable terminal is determined to obtain the target sealing performance level value.

[0161] When the target sealing performance value is less than the preset sealing performance value, a first prompt message is generated. The first prompt message is used to indicate that the sealing performance between the cable terminal sealing device and the target cable terminal is poor.

[0162] When the target sealing performance value is greater than or equal to the preset sealing performance value, a second prompt message is generated. The second prompt message is used to prompt that the connection between the target cable terminal and the cable terminal sealing device be maintained, and that the joint of the target cable terminal be sealed by the cable terminal sealing device.

[0163] In some possible implementations, the above procedure includes instructions for performing the following steps:

[0164] The cable terminal sealing device includes a female metal sleeve, an inner metal sealing ring, a female metal sleeve, a vent, and a rubber vent tube;

[0165] The inner metal sealing ring is placed at the unthreaded end of the female metal sleeve; the female metal sleeve includes an unthreaded end and a threaded end, and the unthreaded end is smaller than the threaded end.

[0166] The target cable terminal is nested from the unthreaded end of the female metal sleeve to the threaded end of the female metal sleeve;

[0167] One end of the sub-metal sleeve is threaded to the threaded end of the mother metal sleeve; the other end of the sub-metal sleeve is connected to the vent; the vent is either open or closed.

[0168] The rubber vent tube is connected to the vent.

[0169] In some possible implementations, the above procedure includes instructions for performing the following steps in determining the sealing performance level of the cable termination sealing device for the target cable termination and obtaining the target sealing performance level value:

[0170] After the pressurizing device is connected to the rubber vent tube of the cable terminal sealing device, the working state of the vent is adjusted to the open state, and the pressurizing device is controlled to inject a preset gas into the gap space between the target cable terminal and the cable terminal sealing device through the vent.

[0171] When the pressure between the target cable terminal and the cable terminal sealing device is the first pressure value, the working state of the vent is adjusted to the closed state;

[0172] After a first preset time period, the pressure value between the target cable terminal and the cable terminal sealing device is obtained to obtain a second pressure value;

[0173] Determine the pressure difference between the first pressure value and the second pressure value;

[0174] The target sealing performance level is determined based on the pressure difference.

[0175] In some possible implementations, the above procedure includes instructions for performing the following steps in determining the target sealing performance level based on the pressure difference:

[0176] The gas leakage rate is determined based on the pressure difference and the first preset time period.

[0177] Determine a first sealing performance value corresponding to the gas leakage rate;

[0178] Obtain the average temperature of the target cable terminal during the first preset time period;

[0179] Determine the first optimization factor corresponding to the average temperature;

[0180] The reference sealing performance value is optimized based on the first optimization factor to obtain the target sealing performance value.

[0181] In some possible implementations, the above procedure includes instructions for performing the following steps in determining the sealing performance level of the cable termination sealing device for the target cable termination and obtaining the target sealing performance level value:

[0182] After the pressurizing device is connected to the rubber vent tube of the cable terminal sealing device, the working state of the vent is adjusted to the open state, and the pressurizing device is controlled to fill the gap space between the target cable terminal and the cable terminal sealing device with a preset volume of gas through the vent.

[0183] Acquire pressure change data between the target cable terminal and the cable terminal sealing device within a second preset time period;

[0184] A straight line is obtained by fitting the pressure change data;

[0185] Determine the slope of the pressure change line to obtain the pressure change slope;

[0186] The target sealing performance level is determined based on the slope of the pressure change.

[0187] In some possible implementations, the above procedure includes instructions for performing the following steps in determining the target sealing performance level based on the slope of the pressure change:

[0188] Determine the second sealing performance value corresponding to the slope of the pressure change;

[0189] Obtain the insulation resistance change data of the target cable terminal during the second preset time period;

[0190] Based on the insulation resistance change data, a straight line is fitted to obtain the insulation resistance change line;

[0191] Determine the slope of the linear curve representing the change in insulation resistance to obtain the slope of the change in insulation resistance;

[0192] Determine the second optimization factor corresponding to the slope of the change in insulation resistance;

[0193] The second sealing performance level value is optimized based on the second optimization factor to obtain the target sealing performance level value.

[0194] In some possible implementations, the above procedure includes instructions for performing the following steps:

[0195] When the target sealing performance value is greater than or equal to the preset sealing performance value, the preset gas in the gap space between the target cable terminal and the cable terminal sealing device is discharged through the vent.

[0196] It should be understood that the electronic devices in this application may include smartphones (such as Android phones, iOS phones, Windows Phones, etc.), tablet computers, PDAs, laptops, mobile internet devices (MIDs) or wearable devices, servers, edge computing nodes, cable termination sealing devices, etc. The above-mentioned electronic devices are merely examples and not exhaustive, and include, but are not limited to, the electronic devices described above.

[0197] This application also provides a computer-readable storage medium storing a computer program that is executed by a processor to implement some or all of the steps of any of the methods described in the above method embodiments.

[0198] This application also provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods described in the above method embodiments.

[0199] It should be noted that, for the sake of simplicity, the aforementioned methods are described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are optional, and the actions and modules involved are not necessarily essential to this application.

[0200] In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0201] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0202] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0203] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software program module.

[0204] If the integrated unit is implemented as a software program module and sold or used as an independent product, it can be stored in a computer-readable storage device (CMD). Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned memory includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0205] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage device, which may include: flash drive, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0206] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for sealing a cable terminal joint, characterized in that, The cable terminal joint sealing method, applied to cable termination sealing equipment, includes: With the target cable terminal and the cable terminal sealing device in a connected state, the sealing performance level of the cable terminal sealing device for the target cable terminal is determined to obtain the target sealing performance level value. When the target sealing performance value is less than the preset sealing performance value, a first prompt message is generated. The first prompt message is used to indicate that the sealing performance between the cable terminal sealing device and the target cable terminal is poor. When the target sealing performance value is greater than or equal to the preset sealing performance value, a second prompt message is generated. The second prompt message is used to prompt that the connection between the target cable terminal and the cable terminal sealing device be maintained, and that the joint of the target cable terminal be sealed by the cable terminal sealing device.

2. The method as described in claim 1, characterized in that, The cable terminal sealing device includes a female metal sleeve, an inner metal sealing ring, a female metal sleeve, a vent, and a rubber vent tube; The inner metal sealing ring is placed at the unthreaded end of the female metal sleeve; the female metal sleeve includes an unthreaded end and a threaded end, and the unthreaded end is smaller than the threaded end. The target cable terminal is nested from the unthreaded end of the female metal sleeve to the threaded end of the female metal sleeve; One end of the sub-metal sleeve is threaded to the threaded end of the mother metal sleeve; the other end of the sub-metal sleeve is connected to the vent; the vent is either open or closed. The rubber vent tube is connected to the vent.

3. The method as described in claim 2, characterized in that, Determining the sealing performance level of the cable terminal sealing device for the target cable terminal, and obtaining the target sealing performance level value, includes: After the pressurizing device is connected to the rubber vent tube of the cable terminal sealing device, the working state of the vent is adjusted to the open state, and the pressurizing device is controlled to inject a preset gas into the gap space between the target cable terminal and the cable terminal sealing device through the vent. When the pressure between the target cable terminal and the cable terminal sealing device is the first pressure value, the working state of the vent is adjusted to the closed state; After a first preset time period, the pressure value between the target cable terminal and the cable terminal sealing device is obtained to obtain a second pressure value; Determine the pressure difference between the first pressure value and the second pressure value; The target sealing performance level is determined based on the pressure difference.

4. The method as described in claim 3, characterized in that, Determining the target sealing performance level based on the pressure difference includes: The gas leakage rate is determined based on the pressure difference and the first preset time period. Determine a first sealing performance value corresponding to the gas leakage rate; Obtain the average temperature of the target cable terminal during the first preset time period; Determine the first optimization factor corresponding to the average temperature; The reference sealing performance value is optimized based on the first optimization factor to obtain the target sealing performance value.

5. The method as described in claim 2, characterized in that, Determining the sealing performance level of the cable terminal sealing device for the target cable terminal, and obtaining the target sealing performance level value, includes: After the pressurizing device is connected to the rubber vent tube of the cable terminal sealing device, the working state of the vent is adjusted to the open state, and the pressurizing device is controlled to fill the gap space between the target cable terminal and the cable terminal sealing device with a preset volume of gas through the vent. Acquire pressure change data between the target cable terminal and the cable terminal sealing device within a second preset time period; A straight line is obtained by fitting the pressure change data; Determine the slope of the pressure change line to obtain the pressure change slope; The target sealing performance level is determined based on the slope of the pressure change.

6. The method as described in claim 5, characterized in that, Determining the target sealing performance level based on the slope of the pressure change includes: Determine the second sealing performance value corresponding to the slope of the pressure change; Obtain the insulation resistance change data of the target cable terminal during the second preset time period; Based on the insulation resistance change data, a straight line is fitted to obtain the insulation resistance change line; Determine the slope of the linear curve representing the change in insulation resistance to obtain the slope of the change in insulation resistance; Determine the second optimization factor corresponding to the slope of the change in insulation resistance; The second sealing performance level value is optimized based on the second optimization factor to obtain the target sealing performance level value.

7. The method according to any one of claims 3-6, characterized in that, The method further includes: When the target sealing performance value is greater than or equal to the preset sealing performance value, the preset gas in the gap space between the target cable terminal and the cable terminal sealing device is discharged through the vent.

8. A cable termination joint sealing device, characterized in that, Applied to cable terminal sealing equipment, the cable terminal joint sealing device includes: a determining unit and a processing unit; The determining unit is used to determine the sealing performance level of the cable terminal sealing device to the target cable terminal when the target cable terminal and the cable terminal sealing device are in a connected state, and to obtain the target sealing performance level value. The processing unit is configured to generate a first prompt message when the target sealing performance value is less than a preset sealing performance value. The first prompt message is used to indicate that the sealing performance between the cable terminal sealing device and the target cable terminal is poor. When the target sealing performance value is greater than or equal to the preset sealing performance value, a second prompt message is generated. The second prompt message is used to prompt that the connection between the target cable terminal and the cable terminal sealing device be maintained, and that the joint of the target cable terminal be sealed by the cable terminal sealing device.

9. An electronic device, characterized in that, The method includes a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the one or more programs include instructions for performing the steps of the method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that is executed by a processor to implement the method as described in any one of claims 1-7.

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