A stress ring specimen conversion sub

Abstract

The utility model discloses a kind of conversion joints of stress ring sample, comprising: joint body, the one end of joint body outside is provided with first outer thread, the other end of joint body outside is provided with outer plane;The one end of joint body inside at first outer thread is provided with internal thread, the one end of joint body inside at outer plane is provided with inner plane;The one end of joint body away from internal thread is provided with hole;Sample, sample one end is provided with second outer thread, sample is connected by second outer thread with the internal thread of joint body.The conversion joint can connect different sizes of sample with stress ring container through conversion joint, so that the same stress ring container can be compatible with various sizes of sample, reducing the procurement cost of experimental equipment;And avoid the problem of assembling cumbersome caused by inconsistent container size, ensure that NACE TM0177 standard A method test container is uniform, meet the experimental requirements of stress ring sample.

Description

Technical Field

[0001] This invention belongs to the field of stress ring specimen testing technology, specifically a conversion joint for stress ring specimens. Background Technology

[0002] The NACE TM0177 standard method A is a stress ring test. There are usually two sample sizes: a small sample with a diameter of 3.81 mm and a full-size sample with a diameter of 6.35 mm. Its main purpose is to evaluate the stress corrosion cracking susceptibility of metallic materials under specific corrosive environments, providing key evidence for practical engineering applications.

[0003] Chinese patent CN120177269A discloses a constant load stress corrosion testing device for small-sized specimens, including a loading base, a stress ring, a corrosion test container, a first fastening assembly, a second fastener, and two adaptive centering mechanisms. The adaptive centering mechanisms can adaptively adjust the concentricity of the stress ring loading, significantly reducing loading errors and avoiding the generation of additional bending stress. The loading force is evenly distributed on the specimen through a ring-shaped force sensor and a balance pad, effectively reducing uncertainties during the loading process and ensuring more precise stress on the specimen, suitable for stress corrosion testing of small-sized specimens. However, this corrosion test container is not applicable to all sizes of specimens, requiring a dedicated corrosion test container for each specimen size, increasing the number of stress ring containers needed and raising the procurement cost of the experimental equipment. Furthermore, the cumbersome assembly caused by inconsistent container sizes makes it impossible to ensure uniformity of the test containers for the NACE TM0177 standard A method, thus failing to meet the experimental requirements for stress ring specimens.

[0004] Therefore, there is an urgent need for a conversion connector for stress ring specimens that can connect specimens of different sizes to the stress ring container, so that the same stress ring container can be compatible with specimens of multiple sizes, reducing the procurement cost of experimental equipment; and avoiding the cumbersome assembly problems caused by inconsistent container sizes, ensuring the uniformity of the test container for the NACE TM0177 standard A method, and meeting the experimental requirements of stress ring specimens. Utility Model Content

[0005] The purpose of this invention is to provide a transition joint for stress ring specimens to solve at least one aspect of the problems and defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A transition joint for a stress ring specimen, comprising: The connector body has a first external thread at one end and an external plane at the other end. The connector body has an internal thread at one end of the first external thread and an inner plane at one end of the outer plane. A hole is provided at the end of the connector body away from the internal thread; The sample has a second external thread at one end, and the sample is connected to the internal thread of the connector body through the second external thread.

[0007] The transition joint for the stress ring specimen according to this utility model has at least the following technical effects: The adapter joint for this stress ring specimen allows specimens of different sizes to be connected to the stress ring container in the NACE TM0177 Standard A method test. This enables the same stress ring container to be compatible with multiple specimen sizes, eliminating the need for a dedicated stress ring container for each specimen size. This significantly reduces the number of stress ring containers required, thereby lowering the procurement cost of experimental equipment. Furthermore, it avoids the cumbersome assembly problems caused by inconsistent container sizes, ensuring the uniformity of the NACE TM0177 Standard A method test containers. This guarantees the feasibility and accuracy of the experiment, meeting the experimental requirements for stress ring specimens.

[0008] As a further embodiment of this utility model: the other end of the sample is a flat surface, which is located at the inner plane of the connector body.

[0009] As a further embodiment of this invention: a gap is provided between the flat surface of the sample and the inner plane of the connector body.

[0010] Because the other end of the sample is a flat surface located on the inner plane of the connector body, and a gap is provided between the flat surface of the sample and the inner plane of the connector body, a certain distance can be maintained between the sample and the hole, leaving sufficient space. This avoids the sample being unable to fit into the connector body due to dimensional tolerances, greatly improving the assembly success rate of the sample and the connector body, reducing assembly failures and part scrap due to dimensional deviations. Furthermore, it eliminates the need for operators to spend a lot of time and effort adjusting the position and angle of the sample to overcome the obstacles caused by dimensional deviations, reducing the difficulty and complexity of assembly and improving assembly efficiency.

[0011] As a further embodiment of this invention: the sample includes a sample with a 5mm second external thread and a sample with a 6mm second external thread.

[0012] Since the test specimens include samples with 5mm second external threads and samples with 6mm second external threads, the joint body can be compatible with specimens of various sizes. There is no need to equip each specimen size with a special stress ring container, so that the same stress ring container can be adapted to different specimens, which greatly reduces the number of stress ring containers to purchase, thereby reducing the procurement cost of experimental equipment. Moreover, compared with traditional stress ring containers, it effectively reduces assembly steps during cleaning, reduces assembly difficulty, and ensures work efficiency.

[0013] As a further improvement of this utility model, the diameter of the connector body is 10mm.

[0014] As a further embodiment of this utility model: the length of the first external thread is 15.8mm-17.8mm.

[0015] As a further embodiment of this utility model, the length of the outer plane is 9mm-11mm.

[0016] The 10mm diameter of the connector body provides sufficient structural strength and stability, ensuring that it will not deform or be damaged under stress. The length of the first external thread is 15.8mm-17.8mm, preferably 16.8mm, which increases the contact area with the internal thread of the stress ring container, providing greater friction and engagement force. This effectively prevents the connector body from loosening or falling off during the experiment, ensuring the tightness and reliability of the connection. Simultaneously, the length of the outer plane is 9mm-11mm, preferably 10mm. This allows the outer plane to provide positioning and support when the connector body is connected to the stress ring container, preventing the connector body from tilting or shaking under stress. This ensures that stress is evenly transmitted to the entire connection area, enhancing the stability of the connection.

[0017] As a further improvement of this utility model, the connector body and the sample are each independently made of stainless steel.

[0018] As a further improvement of this utility model, the yield strength of both the joint body and the sample is ≥205MPa.

[0019] Since the joint body and the sample are each made of stainless steel, it can effectively prevent the material surface from rusting and corroding, extend its service life, and ensure the performance stability of the experimental equipment during long-term use. In addition, the yield strength of both the joint body and the sample is ≥205MPa. In the stress ring test, the sample and the joint body need to withstand a certain stress. A yield strength of ≥205MPa means that before reaching this stress value, the material will only undergo elastic deformation and can return to its original shape after the stress is removed. This ensures that the sample and the joint body will not undergo plastic deformation prematurely during the experiment, thereby ensuring that the experiment can accurately measure the relevant mechanical property parameters within the elastic range of the material.

[0020] As a further improvement of this utility model, the tensile strength of both the joint body and the sample is ≥485MPa.

[0021] Since the tensile strength of both the joint body and the specimen is ≥485MPa, the joint body and the specimen can withstand large tensile forces, ensuring that they will not easily break during the experiment. This prevents the components from failing due to breakage during the experiment, thus avoiding the interruption or failure of the experiment and ensuring the integrity and reliability of the experimental process. Attached Figure Description

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of a transition joint structure for a stress ring specimen; Figure 2 This is a schematic diagram of the structure of a transition joint specimen for a stress ring specimen.

[0024] Figure label: 1. Connector body; 101. First external thread; 102. Outer plane; 103. Internal thread; 104. Inner plane; 105. Hole; 2. Sample; 201. Second external thread; 202. Flat surface. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] like Figure 1 and Figure 2The present invention, as shown in this embodiment, provides a conversion connector for a stress ring specimen, comprising: a connector body 1, one end of which is provided with a first external thread 101, and the other end of which is provided with an outer plane 102; an internal thread 103 is provided at one end of the connector body 1 located at the first external thread 101, and an inner plane 104 is provided at one end of the connector body 1 located at the outer plane 102; a hole 105 is provided at one end of the connector body 1 away from the internal thread 103; and a specimen 2, one end of which is provided with a second external thread 201, and the specimen 2 is connected to the internal thread 103 of the connector body 1 through the second external thread 201.

[0032] Specifically, the adapter joint for the stress ring specimen allows specimens of different sizes to be connected to the stress ring container in the NACE TM0177 Standard A method test. This enables the same stress ring container to be compatible with multiple specimen sizes, eliminating the need for a dedicated stress ring container for each specimen size. This significantly reduces the number of stress ring containers required, thereby lowering the procurement cost of experimental equipment. Furthermore, it avoids the cumbersome assembly problems caused by inconsistent container sizes, ensuring the uniformity of the NACE TM0177 Standard A method test containers. This guarantees the feasibility and accuracy of the experiment, meeting the experimental requirements for stress ring specimens.

[0033] Furthermore, such as Figure 2 As shown, the other end of the sample 2 is a flat surface 202, which is located at the inner plane 104 of the connector body 1; a gap is provided between the flat surface 202 and the inner plane 104 of the sample 2.

[0034] Specifically, since the other end of the sample 2 is a flat surface 202, which is located at the inner plane 104 of the connector body 1, a gap is provided between the flat surface 202 of the sample 2 and the inner plane 104 of the connector body 1. This allows the sample 2 to maintain a certain distance from the hole 105, leaving a certain space, thereby avoiding the inability to fit the sample into the connector body 1 due to the size tolerance of the sample. This greatly improves the assembly success rate of the sample 2 and the connector body 1, reduces assembly failures and part scrap due to size deviations, and eliminates the need for operators to spend a lot of time and effort adjusting the position and angle of the sample 2 to overcome the obstacles caused by size deviations. This reduces the difficulty and complexity of assembly and improves assembly efficiency.

[0035] According to an embodiment of the present invention, the sample 2 includes a sample with a 5mm second external thread 201 and a sample with a 6mm second external thread 201.

[0036] Specifically, since the sample 2 includes samples with a 5mm second external thread 201 and samples with a 6mm second external thread 201, the connector body 1 can be compatible with samples 2 of various sizes. It is not necessary to equip each size of sample 2 with a special stress ring container, so that the same stress ring container can be adapted to different samples 2, which greatly reduces the number of stress ring containers to be purchased, thereby reducing the procurement cost of experimental equipment. Moreover, compared with traditional stress ring containers, it effectively reduces the assembly steps during cleaning, reduces the assembly difficulty, and ensures work efficiency.

[0037] Furthermore, the diameter of the connector body 1 is 10mm; the length of the first external thread 101 is 15.8mm-17.8mm; and the length of the outer plane 102 is 9mm-11mm.

[0038] Specifically, since the diameter of the connector body 1 is 10mm, the connector body 1 has sufficient structural strength and stability, ensuring that the connector body 1 will not be excessively deformed or damaged under stress. The length of the first external thread 101 is 15.8mm-17.8mm, preferably 16.8mm, which increases the contact area with the internal thread of the stress ring container, providing greater friction and engagement force, effectively preventing the connector body 1 from loosening or falling off during the experiment, and ensuring the tightness and reliability of the connection. At the same time, the length of the outer plane 102 is 9mm-11mm, preferably 10mm. This allows the outer plane 102 to play a positioning and supporting role when the connector body 1 is connected to the stress ring container, preventing the connector body 1 from tilting or shaking under stress, ensuring that the stress can be evenly transmitted to the entire connection part, and enhancing the stability of the connection.

[0039] Furthermore, the joint body 1 and the sample 2 are each independently selected from stainless steel materials, and the yield strength of both the joint body 1 and the sample 2 is ≥205MPa.

[0040] Specifically, since the joint body 1 and the sample 2 are each made of stainless steel, it can effectively prevent the material surface from rusting and corroding, extend its service life, and ensure the performance stability of the experimental equipment during long-term use. In addition, the yield strength of both the joint body 1 and the sample 2 is ≥205MPa. In the stress ring test, the sample 2 and the joint body 1 need to withstand a certain stress. A yield strength ≥205MPa means that before reaching this stress value, the material will only undergo elastic deformation and can return to its original shape after the stress is removed. This ensures that the sample 2 and the joint body 1 will not undergo plastic deformation prematurely during the experiment, thereby ensuring that the experiment can accurately measure the relevant mechanical property parameters within the elastic range of the material.

[0041] Furthermore, the tensile strength of both the joint body 1 and the sample 2 is ≥485MPa.

[0042] Specifically, since the tensile strength of both the joint body 1 and the sample 2 is ≥485MPa, the joint body 1 and the sample 2 can withstand large tensile forces, ensuring that they will not easily break during the experiment. This prevents the components from failing due to breakage during the experiment, thus avoiding the interruption or failure of the experiment and ensuring the integrity and reliability of the experimental process.

[0043] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A transition joint for a stress ring specimen, characterized in that, include: The connector body has a first external thread at one end and an external plane at the other end. The connector body has an internal thread at one end of the first external thread and an inner plane at one end of the outer plane. A hole is provided at the end of the connector body away from the internal thread; The sample has a second external thread at one end, and the sample is connected to the internal thread of the connector body through the second external thread.

2. The transition joint for the stress ring specimen according to claim 1, characterized in that, The other end of the sample is a flat surface, which is located on the inner plane of the connector body.

3. The transition joint for the stress ring specimen according to claim 2, characterized in that, A gap is provided between the flat surface of the sample and the inner plane of the connector body.

4. The transition joint for the stress ring specimen according to claim 3, characterized in that, The test specimens include a 5mm second external thread specimen and a 6mm second external thread specimen.

5. The transition joint for the stress ring specimen according to claim 4, characterized in that, The diameter of the connector body is 10mm.

6. The transition joint for the stress ring specimen according to claim 5, characterized in that, The length of the first external thread is 15.8mm-17.8mm.

7. The transition joint for the stress ring specimen according to claim 6, characterized in that, The length of the outer plane is 9mm-11mm.

8. The adapter joint for the stress ring specimen according to any one of claims 1 to 7, characterized in that, Both the connector body and the sample are made of stainless steel.

9. The transition joint for the stress ring specimen according to claim 8, characterized in that, The yield strength of both the joint body and the sample is ≥205MPa.

10. The transition joint for the stress ring specimen according to claim 9, characterized in that, The tensile strength of both the joint body and the sample is ≥485MPa.

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