Cable accessory semi-conductive rubber decarburization analysis method, device, equipment and medium

Abstract

The invention discloses a cable accessory semi-conductive rubber decarburization analysis method, device and equipment and a medium, and relates to the field of cable detection.The cable accessory semi-conductive rubber decarburization analysis method is characterized in that the inner diameter parameter of an insulating prefabricated part and the outer diameter parameter range of a cable body matched with the insulating prefabricated part are obtained; according to the inner diameter parameter range and the outer diameter parameter range, the interference magnitude range of the insulating prefabricated part is determined; obtaining the decarburization area of the cable body when the cable body is completely pulled out of the insulating prefabricated member under different interference magnitudes; fitting the magnitude of interference and the decarburization area to generate a decarburization area change curve of the insulating prefabricated member under different magnitudes of interference; and analyzing the decarburization condition of the cable accessory semi-conductive rubber based on the decarburization area change curve so as to evaluate the decarburization difficulty of the semi-conductive rubber. The problem that the decarburization condition of the cable accessory is not quantitatively analyzed in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the field of cable detection, and more specifically to a method, device, equipment and medium for analyzing decarbonization of semi-conductive rubber of cable accessories. Background Art

[0002] During the dismantling inspection after the failure of high-voltage cable accessories, it was found that the semi-conductive rubber of some cable joints and cable terminals had obvious carbon black shedding phenomenon. The decarbonization phenomenon will cause obvious internal surface creepage marks on the insulating prefabricated parts after operation, which can easily cause breakdown failure of cable accessories and seriously affect the power supply reliability of the urban power grid.

[0003] The decarbonization of semi-conductive rubber is generally caused by unreasonable formulation of cable accessories and poor production process control. During the installation of cable accessories, the insulating preform needs to be shrunk onto the cable body with a certain amount of interference, so there is inevitable friction under high interface pressure between the cable body (or expansion tube) and the insulating preform. If such decarbonization problems are not discovered before the cable accessories are used, the semi-conductive particles will fall off under the high friction during the installation process and be distributed on the inner surface of the insulating preform and the surface of the cable body in a discrete or partially agglomerated manner, reducing the surface strength of the cable accessories and even causing insulation breakdown after operation. Once decarbonization occurs in cable accessories, it is usually a batch quality defect, which seriously affects the safe operation of the power grid. Summary of the invention

[0004] The purpose of the present invention is to provide a method, device, equipment and medium for analyzing decarbonization of semi-conductive rubber of cable accessories, which solves the problem that the related technology fails to conduct quantitative analysis on the decarbonization of cables.

[0005] A first aspect of the present invention provides a method for analyzing decarbonization of semi-conductive rubber of cable accessories, the method comprising:

[0006] Obtaining the inner diameter parameter of the insulating preform and the outer diameter parameter range of the cable body adapted to the insulating preform;

[0007] Determine the interference range of the insulation preform according to the inner diameter parameter and the outer diameter parameter range;

[0008] Obtain the decarbonization area of ​​the cable body when the cable body is completely pulled out of the insulating preform under different interference amounts;

[0009] Fitting the interference and decarburization area to generate the decarburization area variation curve of the insulation preform under different interference;

[0010] The decarbonization of the semi-conductive rubber of cable accessories is analyzed based on the decarbonization area change curve to evaluate the difficulty of decarbonization of the semi-conductive rubber.

[0011] In one implementation, the interference range of the insulating preform is determined as follows:

[0012] Determine the minimum interference according to the difference between the minimum value of the outer diameter parameter range and the inner diameter parameter;

[0013] Determine the maximum interference according to the difference between the maximum value of the outer diameter parameter range and the inner diameter parameter;

[0014] The interference range of the insulating preform is determined by combining the minimum interference and the maximum interference.

[0015] In one implementation, the method further includes: when the cable body is completely pulled out of the insulating preform, when a plurality of discontinuous local decarburization regions appear, the area of ​​the decarburization region of the cable body is the sum of the areas of the various local decarburization regions.

[0016] In one implementation, the difference between adjacent outer diameter parameters of the cable body used for the decarburization test is any fixed value.

[0017] A second aspect of the present invention provides a device for analyzing decarbonization of semi-conductive rubber of cable accessories, the device comprising:

[0018] A first parameter acquisition module is used to acquire an inner diameter parameter of the insulating preform and an outer diameter parameter range of the cable body adapted to the insulating preform;

[0019] An interference determination module is used to determine the interference range of the insulating preform according to the inner diameter parameter and the outer diameter parameter range;

[0020] The second parameter acquisition module is used to obtain the decarbonization area of ​​the cable body when the cable body is completely pulled out of the insulating preform under different interference amounts;

[0021] An area change curve generation module is used to fit the interference amount and the decarburization area to generate a decarburization area change curve of the insulation preform under different interference amounts;

[0022] The decarbonization analysis module is used to analyze the decarbonization of the semi-conductive rubber of the cable accessories based on the decarbonization area change curve to evaluate the difficulty of decarbonization of the semi-conductive rubber.

[0023] In one implementation, the interference determination module is specifically used to:

[0024] Determine the minimum interference according to the difference between the minimum value of the outer diameter parameter range and the inner diameter parameter;

[0025] Determine the maximum interference according to the difference between the maximum value of the outer diameter parameter range and the inner diameter parameter;

[0026] The interference range of the insulating preform is determined by combining the minimum interference and the maximum interference.

[0027] In one implementation, the device further includes:

[0028] The third parameter acquisition module is used for when the cable body is completely pulled out of the insulating preform and multiple discontinuous local decarburization regions appear, the area of ​​the decarburization region of the cable body is the sum of the areas of each local decarburization region.

[0029] In one implementation, the difference between adjacent outer diameter parameters of the cable body used for the decarburization test is any fixed value.

[0030] The third aspect of the present invention provides an electronic device, comprising a processor, a memory, and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor, the steps of a method for analyzing decarbonization of semi-conductive rubber of cable accessories as provided in the first aspect of the present invention are implemented.

[0031] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of a method for analyzing decarbonization of semi-conductive rubber of cable accessories as provided in the first aspect of the present invention are implemented.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] In a method for analyzing decarbonization of semi-conductive rubber of cable accessories provided in an embodiment of the present invention, first, the inner diameter parameter of the insulating preform and the outer diameter parameter range of the cable body matched with the insulating preform are obtained; the interference amount of the insulating preform is determined according to the inner diameter parameter and the outer diameter parameter range; the decarbonization area of ​​the cable body is obtained when the cable body is completely pulled out of the insulating preform under different outer diameter parameters; the interference amount and the decarbonization area are fitted to generate a decarbonization area change curve of the insulating preform under different interference amounts; and the decarbonization condition of the semi-conductive rubber of the cable is analyzed based on the decarbonization area change curve. The present invention determines the interference of the insulating preform based on the range of the inner diameter parameter and the outer diameter parameter, and then obtains the decarbonization area of ​​the cable body when the cable body is completely pulled out of the insulating preform under different outer diameter parameters, and then forms a decarbonization area change curve of the insulating preform under different interferences with the interference as the horizontal coordinate and the decarbonization area as the vertical coordinate. If the slope of the curve is higher, it means that the semi-conductive rubber is more likely to decarbonize, and the threat to the operation of the cable line is higher, thereby realizing the evaluation of the decarbonization phenomenon of the semi-conductive rubber of the cable accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0035] Figure 1 It is a schematic flow chart of a method for analyzing decarbonization of semi-conductive rubber of cable accessories provided by an embodiment of the present invention;

[0036] Figure 2 is a flow chart of a decarbonization test of a semi-conductive rubber of a cable accessory provided by an embodiment of the present invention;

[0037] Figure 3 It is a principle block diagram of a semi-conductive rubber decarbonization analysis device for cable accessories provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0039] It should be noted that the terms "include" or "may include" used in various embodiments of the present application indicate the presence of the function, operation or element applied for, and do not limit the addition of one or more functions, operations or elements. In addition, as used in various embodiments of the present application, the terms "include", "have" and their cognates are only intended to indicate specific features, numbers, steps, operations, elements, components or a combination of the foregoing items, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components or a combination of the foregoing items or the possibility of adding one or more features, numbers, steps, operations, elements, components or a combination of the foregoing items.

[0040] In various embodiments of the present application, the expression "or" or "at least one of B or / and C" includes any combination or all combinations of the words listed at the same time. For example, the expression "B or C" or "at least one of B or / and C" may include B, may include C, or may include both B and C.

[0041] It should be understood that, in the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0042] Please refer to Figure 1 , Figure 1 Schematic diagram of the process of the semi-conductive rubber decarbonization analysis method for cable accessories provided by an embodiment of the present invention, such as Figure 1 As shown, the method includes:

[0043] S101, obtaining an inner diameter parameter of an insulating preform and an outer diameter parameter range of a cable body adapted to the insulating preform.

[0044] In this embodiment, the cable refers to a high-voltage transmission cable used to transmit electricity between 110kV and 500kV, mainly used for power transmission and distribution. The insulating material of the high-voltage cable is cross-linked polyethylene insulation, and the structural form is usually a single-core cable. High-voltage cable accessories refer to cable intermediate joints or cable terminals used to connect the high-voltage cable body. The core structure of the cable accessories is an insulating preform. The insulating preform has a certain electric field improvement effect and is composed of insulating material and semi-conductive material. The insulating material is usually silicone rubber or EPDM rubber. The semi-conductive material is usually based on the insulating material with a certain amount of conductive carbon black and other additives added. This is common knowledge in the field of technology, and no unnecessary description is made in this embodiment.

[0045] When cable accessories are installed on site or tested after molding, they are usually attached to the cable body with a certain amount of interference. For a certain type of insulating prefabricated part with an inner diameter parameter (D), the minimum outer diameter of the cable body to which it is adapted is C min , the maximum is C max , so the outer diameter parameter range is C min ~C max It should be noted that the inner diameter parameters and outer diameter parameters are obtained by measurement.

[0046] S102, determining the interference of the insulating preform according to the inner diameter parameter and the outer diameter parameter range.

[0047] In this embodiment, the interference amount of the insulating preform is determined specifically as follows: the minimum interference amount is determined according to the difference between the minimum value of the outer diameter parameter range and the inner diameter parameter; the maximum interference amount is determined according to the difference between the maximum value of the outer diameter parameter range and the inner diameter parameter; and the interference amount of the insulating preform is determined by combining the minimum interference amount and the maximum interference amount.

[0048] Specifically, the minimum interference of the prefabricated part is I min , the maximum is I max , the relationship between the above parameters is as follows:

[0049] I min =C min -D;I max =C max -D.

[0050] S103, obtaining the decarbonization area of ​​the cable body when the cable body is completely withdrawn from the insulating preform under different outer diameter parameters.

[0051] In this embodiment, the decarburization area is measured by the following method: Figure 2As shown in the figure, the cable body test samples are made of cross-linked polyethylene, and the outer diameter C is C min , C min +1, C min +2……, C max (Unit: mm), the cable body test sample can be replaced by the cable body after stripping the insulation shield. Before testing, the cable body sample should be wiped clean with alcohol cleaning paper and smeared with appropriate amount of silicone oil.

[0052] For the insulation prefabricated part with inner diameter D, in a clean and dust-free environment, use a special expansion tool to shrink the cable accessories to the outer diameter C. min on the cable body. Place the insulating preform shrunk onto the cable body on a fixing fixture. The length of the fixture should be greater than the cable insulating preform after expansion, and clamp the preform on the fixture with the front and rear edges to prevent the preform from displacement during subsequent testing. Apply force to the cable body through fixing tools such as chain hoists and binding tapes, and slowly drag the cable from the inside of the insulating preform at a uniform speed v until the cable body is completely pulled out of the insulating preform. Observe the cross-linked polyethylene outer surface of the cable body, and for local areas where decarbonization occurs, measure and record the decarbonization area S1 according to the minimum enclosing area; for discontinuous semi-conductive decarbonization areas, the sum of the decarbonization areas of each local area should be taken.

[0053] The difference between adjacent outer diameter parameters of the cable body used for decarburization test is any fixed value, for example, the range of diameter C is C min ~C max In this embodiment, the difference between adjacent outer diameter parameters is increased by 1 mm, and currently it can also be 2 mm, so as to obtain the outer diameter C min +1mm~C max The cable body sample is based on the outer diameter C min +1mm~C max The above operations are repeated for the cable body samples, and the corresponding decarbonization area S2, S3, S4, ... SN are measured and recorded. Thus, based on the recorded area data, the decarbonization area of ​​the cable body is obtained when the cable body is completely pulled out of the insulating preform under different outer diameter parameters.

[0054] S104, fitting the interference and the decarburization area to generate a decarburization area variation curve of the insulation preform under different interferences.

[0055] In this embodiment, the interference of the cable accessories is used as the horizontal coordinate and the decarburized area is used as the vertical coordinate to form a decarburized area variation curve of the cable insulation preform under different interferences. Since the points on the two-dimensional coordinate system do not necessarily present a linear relationship, this embodiment generates the decarburized area variation curve of the insulation preform under different interferences in a fitting manner. The fitting method can adopt the interpolation method, polynomial fitting, regression analysis and other methods provided by the prior art. Since these fitting methods are currently mature technologies, they are not described in detail in this embodiment.

[0056] S105, analyzing the decarbonization of the semi-conductive rubber of the cable accessories based on the decarbonization area variation curve to evaluate the difficulty of decarbonization of the semi-conductive rubber.

[0057] In this embodiment, the decarbonization of the semi-conductive rubber is analyzed based on the slope of a certain part of the curve. For example, at a certain point, the higher the slope of the decarbonization area change curve, the easier it is for the semi-conductive rubber to decarbonize, and the higher the threat to the operation of the cable line. Different interference amounts represent different interface pressures between the cable accessories and the cable body. The larger the interference amount, the greater the interface pressure. For cable accessories installed by pre-expansion, after the accessories are shrunk to the cable body, the expansion tube needs to be pulled out by pulling; for cable accessories installed directly by pulling, the cable body is pulled out from the insulating preform, and the effect of the pulling process on the decarbonization of the semi-conductive rubber of the cable accessories under different interface pressures can also be simulated. The greater the interface pressure between the cable accessories and the body, the greater the friction to be overcome during the pulling process, and the easier it is for the carbon black that is not fully bound in the semi-conductive rubber to fall off. Therefore, the amount of carbon black that falls off after the cable body is pulled out from the preform can reflect the degree of decarbonization of the semi-conductive rubber under a certain interface pressure. In engineering applications, the interface pressure cannot be measured non-destructively without damaging the insulating preform or introducing foreign matter, but there is a good positive correlation between the interference and the interface pressure, and a good linear correlation when the interface pressure is small. The growth rate of the decarburization area with the interference can reflect the decarburization phenomenon that is more likely to occur in the semi-conductive rubber as the interface friction increases, and there is a positive correlation. Therefore, the slope of the curve of the decarburization area with the interference can reflect the difficulty of decarburization of the semi-conductive rubber of the cable accessories, and can be used to quantitatively evaluate the quality of the semi-conductive rubber of the high-voltage cable accessories.

[0058] In some embodiments, the method further comprises: when the cable body is completely pulled out of the insulating preform, when a plurality of discontinuous local decarburization regions appear, the area of ​​the decarburization region of the cable body is the sum of the areas of the various local decarburization regions.

[0059] Specifically, since the area where decarbonization occurs on the outer surface of the cross-linked polyethylene of the cable body may be discontinuous during the process of removing the insulating preform from the cable body, this embodiment sums the areas of each local decarbonization area to determine the decarbonization area of ​​the semi-conductive rubber of the cable accessory under a certain interference fit.

[0060] Please refer to Figure 3 , Figure 3 This is the principle of a cable accessory semi-conductive rubber decarbonization analysis device provided by an embodiment of the present invention, such as Figure 3 As shown, the method includes, the device includes:

[0061] A first parameter acquisition module 310 is used to acquire an inner diameter parameter of the insulating preform and an outer diameter parameter range of a cable body adapted to the insulating preform;

[0062] The interference determination module 320 is used to determine the interference range of the insulating preform according to the inner diameter parameter and the outer diameter parameter range;

[0063] The second parameter acquisition module 330 is used to obtain the decarbonization area of ​​the cable body when the cable body is completely pulled out of the insulating preform under different interference amounts;

[0064] An area variation curve generating module 340 is used to fit the interference amount and the decarburization area to generate a decarburization area variation curve of the insulating preform under different interference amounts;

[0065] The decarbonization analysis module 350 is used to analyze the decarbonization of the semi-conductive rubber of the cable accessories based on the decarbonization area variation curve to evaluate the difficulty of decarbonization of the semi-conductive rubber.

[0066] A semi-conductive rubber decarbonization analysis device for cable accessories in the embodiment of the present application is similar to the above Figure 1 The method for analyzing decarbonization of semi-conductive rubber of a cable accessory shown is an invention based on the same concept. Through the above detailed description of the method for analyzing decarbonization of semi-conductive rubber of a cable accessory, those skilled in the art can clearly understand the implementation process of the device for analyzing decarbonization of semi-conductive rubber of a cable accessory in this embodiment. Therefore, for the sake of brevity of the specification, it will not be repeated here.

[0067] Accordingly, a device for analyzing decarbonization of semi-conductive rubber of cable accessories provided by an embodiment of the present invention determines the interference fit of an insulating preform based on an inner diameter parameter and an outer diameter parameter range, and then obtains the decarbonization area of ​​the cable body when the cable body is completely pulled out of the insulating preform under different outer diameter parameters, and then forms a decarbonization area change curve of the insulating preform under different interference fits with the interference fit as the horizontal coordinate and the decarbonization area as the vertical coordinate. If the slope of the curve is higher, it means that the semi-conductive rubber is easier to decarbonize, and the threat to the operation of the cable line is higher, thereby realizing the evaluation of the decarbonization phenomenon of the semi-conductive rubber.

[0068] In some embodiments, the interference determination module 320 is specifically configured to:

[0069] Determine the minimum interference according to the difference between the minimum value of the outer diameter parameter range and the inner diameter parameter;

[0070] Determine the maximum interference according to the difference between the maximum value of the outer diameter parameter range and the inner diameter parameter;

[0071] The interference range of the insulating preform is determined by combining the minimum interference and the maximum interference.

[0072] In some embodiments, the apparatus further comprises:

[0073] The third parameter acquisition module is used for when the cable body is completely pulled out of the insulating preform and multiple discontinuous local decarburization regions appear, the area of ​​the decarburization region of the cable body is the sum of the areas of each local decarburization region.

[0074] In some embodiments, the difference between adjacent outer diameter parameters of the cable body used for the decarburization test is any certain value.

[0075] In another embodiment of the present invention, an electronic device is provided, which includes a processor, a memory, a communication interface and at least one communication bus for connecting the processor, the memory and the communication interface. The memory includes but is not limited to a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (PROM) or a portable CD-ROM, and the memory is used for related instructions and data.

[0076] The communication interface is used to receive and send data. The processor may be one or more CPUs. When the processor is a CPU, the CPU may be a single-core CPU or a multi-core CPU. The processor in the electronic device is used to read one or more programs stored in the memory and perform the following operations: obtaining the inner diameter parameter of the insulating preform and the outer diameter parameter range of the cable body adapted to the insulating preform; determining the interference range of the insulating preform according to the inner diameter parameter and the outer diameter parameter range; obtaining the decarbonization area of ​​the cable body when the cable body is completely pulled out of the insulating preform under different interference amounts; fitting the interference amount and the decarbonization area to generate a decarbonization area change curve of the insulating preform under different interference amounts; analyzing the decarbonization of the semi-conductive rubber of the cable accessories based on the decarbonization area change curve to evaluate the difficulty of decarbonization of the semi-conductive rubber.

[0077] It should be noted that the specific implementation of each operation can be Figure 1 The corresponding description of the method embodiment shown, the electronic device can be used to execute a cable accessory semi-conductive rubber decarbonization analysis method of the above method embodiment of the present application, which will not be described in detail here.

[0078] In another embodiment of the present invention, a computer-readable storage medium is provided, which is a memory device in a computer device for storing programs and data. It is understandable that the computer-readable storage medium here can include both built-in storage media in the computer device and, of course, extended storage media supported by the computer device. The computer-readable storage medium provides a storage space, which stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by the processor are also stored in the storage space, and these instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory (non-volatile memory), such as at least one disk memory. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the corresponding steps of the above-mentioned embodiment of a semi-conductive rubber decarbonization analysis method for cable accessories. It should be understood by those skilled in the art that the embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0079] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for analyzing decarbonization of semi-conductive rubber of cable accessories, characterized in that the method include: Obtaining the inner diameter parameter of the insulating preform and the outer diameter parameter range of the cable body adapted to the insulating preform; Determine the interference range of the insulation preform according to the inner diameter parameter and the outer diameter parameter range; Obtain the decarbonization area of ​​the cable body when the cable body is completely pulled out of the insulating preform under different interference amounts; Fitting the interference and decarburization area to generate the decarburization area variation curve of the insulation preform under different interference; The decarbonization of the semi-conductive rubber of cable accessories is analyzed based on the decarbonization area change curve to evaluate the difficulty of decarbonization of the semi-conductive rubber.

2. The method according to claim 1, characterized in that Determine the interference range of the insulation prefabricated parts, specifically: Determine the minimum interference according to the difference between the minimum value of the outer diameter parameter range and the inner diameter parameter; Determine the maximum interference according to the difference between the maximum value of the outer diameter parameter range and the inner diameter parameter; The interference range of the insulating preform is determined by combining the minimum interference and the maximum interference.

3. The method according to claim 1, characterized in that The method further comprises: when the cable body is completely pulled out of the insulating preform, when a plurality of discontinuous local decarburization regions appear, the area of ​​the decarburization region of the cable body is the sum of the areas of the various local decarburization regions.

4. The method according to claim 1, characterized in that: The difference between adjacent outer diameter parameters of the cable body used for the decarburization test is any fixed value.

5. A cable accessory semi-conductive rubber decarbonization analysis device, characterized in that: The device includes: A first parameter acquisition module is used to acquire an inner diameter parameter of the insulating preform and an outer diameter parameter range of the cable body adapted to the insulating preform; An interference determination module is used to determine the interference range of the insulating preform according to the inner diameter parameter and the outer diameter parameter range; The second parameter acquisition module is used to obtain the decarbonization area of ​​the cable body when the cable body is completely pulled out of the insulating preform under different interference amounts; An area change curve generation module is used to fit the interference amount and the decarburization area to generate a decarburization area change curve of the insulation preform under different interference amounts; The decarbonization analysis module is used to analyze the decarbonization of the semi-conductive rubber of the cable accessories based on the decarbonization area change curve to evaluate the difficulty of decarbonization of the semi-conductive rubber.

6. The device according to claim 5, characterized in that The interference determination module is specifically used for: Determine the minimum interference according to the difference between the minimum value of the outer diameter parameter range and the inner diameter parameter; Determine the maximum interference according to the difference between the maximum value of the outer diameter parameter range and the inner diameter parameter; The interference range of the insulating preform is determined by combining the minimum interference and the maximum interference.

7. The device according to claim 5, characterized in that The device also includes: The third parameter acquisition module is used for when the cable body is completely pulled out of the insulating preform and multiple discontinuous local decarburization regions appear, the area of ​​the decarburization region of the cable body is the sum of the areas of each local decarburization region.

8. The device according to claim 5, characterized in that The difference between adjacent outer diameter parameters of the cable body used for the decarburization test is any fixed value.

9. An electronic device, characterized in that: The electronic device includes a processor, a memory, and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor, the steps of a method for analyzing decarbonization of semi-conductive rubber of cable accessories as described in any one of claims 1 to 4 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the steps of the method for analyzing decarbonization of semi-conductive rubber of cable accessories according to any one of claims 1 to 4 are implemented.

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