Electrical contact connecting device, bus structure and conductor radial offset detection method

Abstract

The invention provides an electrical contact connecting device, a bus structure and a conductor radial offset detection method, the electrical contact connecting device comprises a contact seat, a conductor and a measuring part, and the contact seat is internally provided with a plugging cavity; the end part of the conductor is suitable for being inserted into the insertion cavity; the measuring parts are arranged on a plurality of longitudinal cross sections of the contact seat, the measuring parts on each cross section are arranged in the circumferential direction, each measuring part comprises a limiting rod piece and a reset spring, the limiting rod piece penetrates through the contact seat and is connected with the contact seat through the reset spring, and a pressure sensor is arranged in the bottom end of the limiting rod piece. The device is suitable for being pressed on a conductor to measure the radial stress of the conductor. According to the embodiment of the invention, the measuring parts are arranged in the circumferential direction of the conductor, the measuring parts are elastically assembled with the contact seat, and the conductor is propped through the limiting rod piece, so that the radial deviation of the conductor can be reduced to a certain extent, and the measuring parts can monitor the stress state of the conductor in real time, so that a worker can find the abnormal state of the conductor as early as possible and can maintain the conductor in time.

Description

Technical Field

[0001] The invention belongs to the field of electrical contacts, and in particular relates to an electrical contact connection device, a busbar structure and a conductor radial offset detection method. Background Art

[0002] As a new type of power transmission equipment, gas insulated transmission line equipment (GIL) is increasingly used at home and abroad due to its large transmission capacity, compact layout, high reliability, and no fire risk. GIL is often used in long-distance, complex terrain and other transmission conditions. The conductor may be offset by a certain angle due to installation errors or thermal expansion and contraction. Conductor offset may cause poor contact and increase loop resistance, which will lead to an increase in contact point temperature, further increase contact resistance, and form a vicious cycle. It may eventually cause the contact conductor to overheat and burn under normal operating current, posing a great safety hazard. Summary of the invention

[0003] The embodiments of the present invention provide an electrical contact connection device, a busbar structure and a conductor radial offset detection method, which aim to avoid accidents caused by conductor offset and eliminate safety hazards in equipment operation.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide an electrical contact connection device, comprising:

[0005] A contact seat, with a plug-in cavity provided inside;

[0006] A conductor, the end of which is suitable for being plugged into the plug-in cavity; and

[0007] A measuring component is arranged on multiple longitudinal sections of the contact base, and the measuring components on each section are arranged along the circumferential direction. The measuring component includes a limit rod and a reset spring. The limit rod passes through the contact base, and the limit rod is connected to the contact base through the reset spring, and is suitable for shrinking toward the inside of the contact base under the action of the reset spring. A pressure sensor is built into the bottom end of the limit rod, which is suitable for pressing on the conductor and measuring the radial force of the conductor.

[0008] In an embodiment of the present application, a measuring component is arranged in the circumferential direction of the conductor, and the measuring component is elastically assembled with the contact seat. The conductor is supported by a limiting rod, which can reduce the radial deviation of the conductor to a certain extent. The measuring component has a built-in pressure sensor, which can monitor the stress state of the conductor in real time, so that the staff can discover the abnormal state of the conductor as early as possible and perform maintenance in time.

[0009] In one embodiment, the measuring component also includes a first positioning cylinder and a second positioning cylinder, the first positioning cylinder is fixed on the outer wall of the contact seat, the top of the first positioning cylinder is stepped, forming a first upper limit surface and a first lower limit surface located below the first upper limit surface; the second positioning cylinder is assembled on the first positioning cylinder, the bottom of the second positioning cylinder is stepped to match the first positioning cylinder, forming a second upper limit surface and a second lower limit surface located below the second upper limit surface; the limiting rod passes through the first positioning cylinder, the second positioning cylinder and the contact seat, the top end of the limiting rod is fixedly connected to the second positioning cylinder, and a pressing plate is provided on the limiting rod; the reset spring is sleeved on the limiting rod, the top end of which is fixedly connected to the contact seat, and the bottom end is fixedly connected to the pressing plate.

[0010] In the embodiment of the present application, during installation, the second positioning cylinder is pulled up and rotated 180°, and the second positioning cylinder is against the top of the first positioning cylinder. The limiting rod can remain in the pulled-up state, which is convenient for installing the conductor into the contact seat. After the conductor is fixed, the second positioning cylinder is reversed and reset. The limiting rod moves toward the inside of the contact seat under the action of the reset spring and presses against the conductor for limiting. The above structure is conducive to the staff to achieve quick installation, and the operation method is simple and convenient.

[0011] In one embodiment, an annular groove is provided on one side of the plug-in cavity close to the opening;

[0012] An annular stopper is mounted on the conductor, the outer edge of which is inserted into the annular groove and is suitable for radially moving in the annular groove along with the conductor, so as to block metal particles.

[0013] In an embodiment of the present application, the annular baffle can seal the metal particles generated by the relative movement of the conductor and the contact in the contact seat, preventing the metal particles from leaking out and affecting the insulation performance and product life of the GIL product, and the annular baffle can move in the annular groove to adapt to small angle deviations of the conductor.

[0014] In one embodiment, an internal shoulder is formed in the insertion cavity;

[0015] The electrical contact connection device also includes a contact, which is placed between the contact seat and the conductor to form an electrical connection between the two, and the inner shoulder abuts against one side of the contact;

[0016] A contact limiting component is mounted on the inner wall of the plug-in cavity, which is suitable for abutting against the other side of the contact to limit the contact.

[0017] In the embodiment of the present application, the contact is limited by the inner shoulder of the contact seat and the limiting component to prevent the contact from axial displacement, thereby ensuring that the connecting device has good conductivity.

[0018] In one embodiment, the contact limiting component includes a plurality of arc-shaped baffles, and the plurality of arc-shaped baffles are fixed on the inner wall of the plug-in cavity along a circumferential direction.

[0019] In the embodiment of the present application, a plurality of arc-shaped baffles are used to form a limiting component, which has stronger adaptability than an integral circular ring structure, can flexibly adapt to manufacturing errors in the diameter of the contact seat, and is easier to assemble.

[0020] In one embodiment, the contact includes a pair of conductive rings and a plurality of contact pieces, the conductive rings are electrically connected to the contact seat and the conductor, and the two conductive rings are connected via a plurality of contact pieces distributed in an annular direction.

[0021] The present invention provides a busbar structure, comprising:

[0022] a housing, in which an insulator is assembled;

[0023] The electrical contact connection device is mounted on the insulator;

[0024] The sleeve, the interference sleeve is arranged on the periphery of the conductor and is fixedly assembled with the shell through a support. Multiple measuring components are arranged on multiple longitudinal sections of the sleeve. The measuring components on each section are arranged along the circumferential direction. The bottom of the measuring component is elastically pressed on the conductor, and the radial force of the conductor is measured by a pressure sensor.

[0025] The present invention provides a method for detecting radial offset of a conductor, using the busbar structure, comprising the following steps:

[0026] Collect shear force data on multiple cross sections of the conductor through measuring components and construct a data training set;

[0027] Using a neural network to train the data training set, and establishing a cross-section-shear force prediction model;

[0028] The shear force of each cross section of the conductor is calculated using the cross section-shear force prediction model, and the radial offset Δ of the conductor is calculated by substituting it into the following formula:

[0029] Δ=∑∫QdFdS / GA

[0030] Among them, Q is the shear force, dF represents the change of shear force on the differential length dS, G is the shear modulus, and A is the cross-sectional area of ​​the conductor.

[0031] In the embodiment of the present application, the radial offset of the conductor can be monitored in real time, and the staff can promptly discover the abnormality of the conductor state so as to promptly repair the conductor connection position to avoid poor contact and overheating damage caused by excessive conductor offset, thereby ensuring the safety of equipment operation.

[0032] In one embodiment, when measuring the shear force on a conductor cross section, the component forces in each direction of the cross section are obtained by a measuring component, and the total shear force of the cross section is calculated according to the parallelogram rule.

[0033] In one embodiment, the data training set includes shear force data and cross-sectional position data. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the busbar structure of the present invention;

[0035] Figure 2 A perspective view of an electrical contact connection device of the present invention;

[0036] Figure 3 is a cross-sectional view of an electrical contact connection device of the present invention;

[0037] Figure 4 It is a structural schematic diagram of the measurement component state 1 of the present invention;

[0038] Figure 5 This is a structural schematic diagram of the second state of the measuring component of the present invention;

[0039] Figure 6 It is a structural schematic diagram of the second positioning tube of the present invention;

[0040] Figure 7 It is a structural schematic diagram of the first positioning tube of the present invention;

[0041] Figure 8 The figure is a flow chart of the steps of the conductor radial offset detection method of the present invention.

[0042] Description of reference numerals:

[0043] 10-Insulator;

[0044] 20-contact seat; 21-annular groove;

[0045] 30-measuring component; 31-second positioning cylinder; 311-second upper limit surface; 312-second lower limit surface; 32-first positioning cylinder; 321-first upper limit surface; 322-first lower limit surface; 33-limiting rod; 34-reset spring; 35-pressing plate;

[0046] 40-conductor;

[0047] 50-housing;

[0048] 60-support member;

[0049] 70- casing;

[0050] 80-contact; 81-conductive ring; 82-contact piece;

[0051] 90-contact limiting component; 91-arc baffle;

[0052] 100- Ring stopper. DETAILED DESCRIPTION

[0053] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0054] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0055] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0057] Gas-insulated transmission line equipment (GIL for short) is a high-voltage, high-current, long-distance power transmission equipment that uses SF6 and other gas insulation, and the shell and conductor are coaxially arranged. The gas insulation system of GIL is mainly composed of insulating parts, conductors, aluminum alloy pipe shells and insulating gas. The insulating parts are used to fix the conductors in the center of the pipeline system to ensure the uniform distribution of the electric field. The insulating parts are usually made of epoxy resin and fillers. The shell material is usually aluminum plate or extruded profile, with a molecular structure with airtight characteristics, and strict welding conditions are used to ensure the airtightness of the transmission line. The conductor tube is a key component in GIL. It is responsible for transmitting current. The design and structure of the conductor tube need to meet the operating requirements of high voltage and high current, and factors such as heat dissipation and mechanical strength need to be considered. The conductor tube is located in the center of the GIL and is surrounded by insulating gas and insulating parts. The conductor in the GIL is usually made of high-purity aluminum, especially electrical aluminum with an aluminum content greater than 99.5%. This material has excellent electrical conductivity and can effectively reduce the resistance loss during transmission, thereby improving the transmission efficiency.

[0058] In GIL equipment, conductors are connected through contact seats. Affected by temperature, thermal expansion and contraction of the conductors will cause a certain amount of offset of the conductor ends in the contact seats. When the offset angle of the conductor is too large, poor contact with the contact seat may occur, causing the contact temperature to rise, aggravating the increase in resistance, and ultimately causing the conductor to overheat and be damaged, posing a huge safety hazard.

[0059] The electrical contact connection device, busbar structure and conductor radial offset detection method provided by the present invention can utilize measuring components to monitor the stress state of the conductor in real time, and analyze the radial displacement of the conductor by collecting the shear force data of the conductor, thereby ensuring that when the conductor offset is too large, the staff can promptly discover the conductor abnormality and perform maintenance, thereby eliminating the safety hazards caused by the conductor offset.

[0060] Please also refer to the attached Figure 2 To Attachment Figure 7, the electrical contact connection device provided by the present invention is now described. The electrical contact connection device comprises a contact seat 20, a conductor 40 and a measuring component 30. The measuring component 30 is arranged along the circumferential direction of the conductor 40 to form an elastic limit for the conductor 40, thereby reducing the radial displacement of the conductor 40. At the same time, the measuring component 30 monitors the stress state of the conductor 40 in real time through a built-in pressure sensor. Specifically, a plug-in cavity is provided inside the contact seat 20. The end of the conductor 40 is suitable for being plugged into the plug-in cavity. The measuring components 30 are arranged on multiple longitudinal sections of the contact base 20. The measuring components 30 on each section are arranged along the circumferential direction. The measuring components 30 include a limiting rod 33 and a reset spring 34. The limiting rod 33 penetrates the contact base 20 and is connected to the contact base 20 through the reset spring 34. The limiting rod 33 is suitable for shrinking into the contact base 20 under the action of the reset spring 34. The inner wall of the contact base 20 is provided with a receiving groove suitable for accommodating the reset spring 34. A pressing plate 35 is formed on the limiting rod 33. The top end of the reset spring 34 is fixedly connected to the top wall of the receiving groove, and the bottom end is fixedly connected to the pressing plate 35. A pressure sensor is built into the bottom end of the limiting rod 33, which is suitable for pressing on the conductor 40 to measure the radial force of the conductor 40.

[0061] In the embodiment of the present application, the measuring component 30 can form a radial limit for the conductor 40, reducing the angular deviation of the conductor 40 to a certain extent, and the measuring component 30 is distributed in the circumferential direction of the conductor 40, and can measure the component forces in multiple directions of the cross section of the conductor 40, calculate the shear force of the conductor 40 according to the parallelogram rule, and monitor the stress state of the conductor 40 in real time.

[0062] In a specific embodiment, see the attached Figure 4 To Attachment Figure 7, a specific structure of a measuring component 30 is provided: the measuring component 30 also includes a first positioning cylinder 32 and a second positioning cylinder 31, the first positioning cylinder 32 is fixed on the outer wall of the contact seat 20, the top of the first positioning cylinder 32 is stepped, forming a first upper limit surface 321 and a first lower limit surface 322 located below the first upper limit surface 321. The second positioning cylinder 31 is assembled on the first positioning cylinder 32, the bottom of the second positioning cylinder 31 is stepped to match the first positioning cylinder 32, forming a second upper limit surface 311 and a second lower limit surface 312 located below the second upper limit surface 311. The limiting rod 33 passes through the first positioning cylinder 32, the second positioning cylinder 31 and the contact seat 20, the top end of the limiting rod 33 is fixedly connected to the second positioning cylinder 31, and a pressing plate 35 is arranged on the limiting rod 33. The reset spring 34 is sleeved on the limiting rod 33, the top end of which is fixedly connected to the contact seat 20, and the bottom end is fixedly connected to the pressing plate 35. When installing the conductor 40, pull the second positioning cylinder 31 outward and rotate it 180°. The second lower limit surface 312 of the second positioning cylinder 31 abuts against the first upper limit surface 321 of the first positioning cylinder 32, so that the limiting rod 33 remains in an upward pulled state, which facilitates the connection of the conductor 40 to the contact seat 20. After the conductor 40 is fixed, the second positioning cylinder 31 is rotated 180° in the opposite direction so that it is reset under the action of the reset spring 34, and the bottom end of the limiting rod 33 abuts against the conductor 40.

[0063] The structure of the measuring component 30 provided in the embodiment of the present application is conducive to rapid assembly and has a simple and convenient operation method.

[0064] In a specific embodiment, an annular groove 21 is provided on one side of the plug-in cavity of the contact seat 20 near the opening. An annular stopper 100 is mounted on the conductor 40, and the outer edge of the annular stopper 100 is plugged into the annular groove 21. The diameter of the annular groove 21 is slightly larger than the annular stopper 100. When the conductor 40 deviates radially, the annular stopper 100 can move radially in the annular groove 21 with the conductor 40, ensuring that even if the conductor 40 deviates, the annular stopper 100 will not completely escape from the annular groove 21, and the metal particles can be sealed in the contact seat 20. Specifically, the annular stopper 100 can be made of polytetrafluoroethylene-filled graphite material.

[0065] In the embodiment of the present application, a sealing annular stopper 100 is provided to prevent metal particles generated by the deviation of the conductor 40 and the friction with the contact 80 from falling out of the contact seat 20 and affecting the insulation performance and service life of the product.

[0066] In a specific embodiment, an inner shoulder is formed in the plug-in cavity of the contact holder 20. The electrical contact connection device further includes a contact 80, which is placed between the contact holder 20 and the conductor 40 to form an electrical connection between the two, and the inner shoulder abuts against one side of the contact 80. A contact limiting component 90 is mounted on the inner wall of the plug-in cavity, which is suitable for abutting against the other side of the contact 80 to limit the contact 80.

[0067] In the embodiment of the present application, a contact limiting component 90 is provided to cooperate with the inner shoulder of the contact seat 20 to limit the contact 80, so as to prevent the conductor 40 from expanding or contracting due to thermal expansion and contraction and causing axial displacement, thereby driving the contact 80 to move axially and affecting the conductive performance of the connecting device.

[0068] In a specific embodiment, a specific structure of a contact limiting component 90 is provided: the contact limiting component 90 includes a plurality of arc-shaped baffles 91, and the plurality of arc-shaped baffles 91 are assembled on the inner wall of the plug-in cavity along the circumferential direction by bolts.

[0069] In the embodiment of the present application, each arc-shaped baffle 91 is assembled separately with the contact seat 20 during assembly. Since the diameter of the contact seat 20 may have a certain manufacturing error, the above structure can flexibly adapt to the size error of the contact seat 20 compared to the integral circular ring structure.

[0070] In a specific embodiment, a specific contact 80 structure is provided: the contact 80 includes a pair of conductive rings 81 and a plurality of contact pieces 82, the conductive rings 81 are electrically connected to the contact seat 20 and the conductor 40, and the two conductive rings 81 are connected via a plurality of contact pieces 82 distributed in an annular direction.

[0071] The present invention provides a busbar structure, please refer to the attached Figure 1 , which includes a housing 50, an electrical contact connection device and a sleeve 70. The conductor 40 is installed inside the housing 50, and its end is fixed to the insulator 10 in the housing 50 through the electrical contact connection device. The measuring component 30 is installed on the outer periphery of the conductor 40 through the sleeve 70. The measuring component 30 is used to monitor the stress state of the conductor 40 in real time. Specifically, the insulator 10 is assembled inside the housing 50. The electrical contact connection device is assembled on the insulator 10. Specifically, the contact seat 20 is fixedly assembled on the insulator 10 by bolts. The sleeve 70 is interference-fitted around the outer periphery of the conductor 40 and fixedly assembled with the housing 50 through the support 60. Multiple measuring components 30 are arranged on multiple longitudinal sections of the sleeve 70. The measuring components 30 on each section are arranged in the circumferential direction. The bottom of the measuring component 30 is elastically pressed on the conductor 40, and the radial stress of the conductor 40 is measured by the pressure sensor.

[0072] Specifically, the cable of the pressure sensor needs to be routed through the housing 50 , and a cable gland is provided between the cable and the housing 50 to ensure the sealing of the housing 50 .

[0073] In a specific embodiment, the support member 60 includes a first assembly ring, a second assembly ring and a connecting beam. The first assembly ring is fixed to the inner wall of the shell 50, and the second assembly ring is fixed to the periphery of the sleeve 70. A plurality of radially arranged connecting beams are connected between the first assembly ring and the second assembly ring to support the sleeve 70.

[0074] The present invention provides a method for detecting the radial offset of a conductor 40 using the busbar structure in the above-mentioned embodiment, comprising the following steps:

[0075] The shear force data on multiple cross sections of the conductor 40 are collected by the measuring component 30 to construct a data training set. When the shear force on a cross section of the conductor 40 is measured, the component forces in each direction of the cross section are obtained by the measuring component 30, and the total shear force of the cross section is calculated according to the parallelogram rule. The data training set includes at least the shear force data and the cross section position data.

[0076] Using a neural network to train the data training set, and establishing a cross-section-shear force prediction model;

[0077] The cross-section-shear force prediction model is used to infer the shear force of each cross section of the conductor 40, and the radial offset Δ of the conductor 40 is calculated by substituting the formula into the following formula:

[0078] Δ=∑∫QdFdS / GA

[0079] Wherein, Q is the shear force, dF represents the change of the shear force on the differential length dS, G is the shear modulus, and A is the cross-sectional area of ​​the conductor 40.

[0080] By adopting the above method, the measuring component 30 is used to detect the shear force data on a specific cross section of the conductor 40, the shear force of each cross section of the conductor 40 is calculated by training the neural network model, and the radial offset of the conductor 40 is calculated by integration, thereby realizing real-time monitoring of the position state of the conductor 40, ensuring that the staff can promptly discover the abnormality of the state of the conductor 40, so as to promptly repair the connection position of the conductor 40, avoid poor contact and overheating damage caused by excessive offset of the conductor 40, and ensure the safety of equipment operation.

[0081] Those of ordinary skill in the art will appreciate that the units and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0082] In the several embodiments provided in the present application, it should be understood that the disclosed methods and systems can be implemented in other ways. For example, the division of the units described above is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. The above-mentioned units may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present invention.

[0083] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the scope of the claims and specification of the present invention.

[0084] Those skilled in the art will appreciate that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined.

[0085] For the method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical contact connection device, characterized in that: include: A contact seat, with a plug-in cavity provided inside; A conductor, the end of which is suitable for being plugged into the plug-in cavity; as well as A measuring component is arranged on multiple longitudinal sections of the contact base, and the measuring components on each section are arranged along the circumferential direction. The measuring component includes a limit rod and a reset spring. The limit rod passes through the contact base, and the limit rod is connected to the contact base through the reset spring, and is suitable for shrinking toward the inside of the contact base under the action of the reset spring. A pressure sensor is built into the bottom end of the limit rod, which is suitable for pressing on the conductor and measuring the radial force of the conductor.

2. The electrical contact connection device according to claim 1, characterized in that: The measuring component also includes a first positioning cylinder and a second positioning cylinder, the first positioning cylinder is fixed on the outer wall of the contact seat, the top of the first positioning cylinder is stepped to form a first upper limit surface and a first lower limit surface below the first upper limit surface; the second positioning cylinder is assembled on the first positioning cylinder, the bottom of the second positioning cylinder is stepped to match the first positioning cylinder to form a second upper limit surface and a second lower limit surface below the second upper limit surface; the limiting rod passes through the first positioning cylinder, the second positioning cylinder and the contact seat, the top end of the limiting rod is fixedly connected to the second positioning cylinder, and a pressing plate is provided on the limiting rod; the reset spring is sleeved on the limiting rod, the top end of which is fixedly connected to the contact seat, and the bottom end is fixedly connected to the pressing plate.

3. The electrical contact connection device according to claim 1, characterized in that: The plug-in cavity is provided with an annular groove on one side close to the opening; An annular stopper is mounted on the conductor, the outer edge of which is inserted into the annular groove and is suitable for radially moving in the annular groove along with the conductor, so as to block metal particles.

4. The electrical contact connection device according to claim 1, characterized in that: An inner shoulder is formed in the insertion cavity; The electrical contact connection device also includes a contact, which is placed between the contact seat and the conductor to form an electrical connection between the two, and the inner shoulder abuts against one side of the contact; A contact limiting component is mounted on the inner wall of the plug-in cavity, which is suitable for abutting against the other side of the contact to limit the contact.

5. The electrical contact connection device according to claim 4, characterized in that: The contact limiting component includes a plurality of arc-shaped baffles, and the plurality of arc-shaped baffles are fixed on the inner wall of the plug-in cavity along the circumferential direction.

6. The electrical contact connection device according to claim 4, characterized in that: The contact comprises a pair of conductive rings and a plurality of contact pieces. The conductive rings are electrically connected to the contact seat and the conductor. The two conductive rings are connected via a plurality of contact pieces distributed in an annular direction.

7. Busbar structure, characterized in that: include: a housing, in which an insulator is assembled; The electrical contact connection device according to any one of claims 1 to 6, mounted on the insulator; The sleeve, the interference sleeve is arranged on the periphery of the conductor and is fixedly assembled with the shell through a support. Multiple measuring components are arranged on multiple longitudinal sections of the sleeve. The measuring components on each section are arranged along the circumferential direction. The bottom of the measuring component is elastically pressed on the conductor, and the radial force of the conductor is measured by a pressure sensor.

8. A method for detecting radial offset of a conductor, characterized in that: Using the busbar structure as claimed in claim 7 comprises the following steps: Collect shear force data on multiple cross sections of the conductor through measuring components and construct a data training set; Using a neural network to train the data training set, and establishing a cross-section-shear force prediction model; The shear force of each cross section of the conductor is calculated using the cross section-shear force prediction model, and the radial offset Δ of the conductor is calculated by substituting it into the following formula: Δ=∑∫QdFdS / GA Among them, Q is the shear force, dF represents the change of shear force on the differential length dS, G is the shear modulus, and A is the cross-sectional area of ​​the conductor.

9. The conductor radial offset monitoring method according to claim 8, characterized in that: When measuring the shear force on a conductor cross section, the component forces in each direction of the cross section are obtained through the measuring component, and the total shear force of the cross section is calculated according to the parallelogram rule.

10. The conductor radial offset monitoring method according to claim 8, characterized in that: The data training set includes shear force data and cross-section position data.

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