Seven-core measurement and control electrical penetration assembly

Abstract

The utility model discloses a seven-core measurement and control electrical penetration assembly, which belongs to the field of nuclear reactors, solves the problem that the existing electrical penetration assembly is lack of monitoring pressure and temperature parameters, and adopts the technical scheme that the seven-core measurement and control electrical penetration assembly mainly comprises an inner sleeve and an outer sleeve, the two ends of the inner sleeve are exposed out of the two end faces of the outer sleeve, detachable junction boxes are installed at the two ends of the inner sleeve, seven connectors are evenly distributed on each junction box, a temperature sensor and a pressure sensor are pre-buried in the inner sleeve, seven threading pipes corresponding to the seven connectors penetrate through the inner sleeve, and the temperature sensor and the pressure sensor are arranged in the inner sleeve. A man-machine interaction interface is arranged on the outer sleeve, and the temperature sensor and the pressure sensor are electrically connected with the man-machine interaction interface after penetrating through the threading pipe through leads. The system is mainly used for measuring and controlling the pressure and temperature parameters in the electrical penetration assembly, and the reliability of the system is improved.

Description

Technical Field

[0001] The utility model relates to the field of nuclear reactors, in particular to a seven-core measurement and control electrical penetration piece. Background Art

[0002] In the prior art, such as the invention patent CN117198568A, an electrical penetration is disclosed as a bridge for signal transmission inside and outside the nuclear reactor, which is installed on the containment or pressure vessel of the reactor to seal the radioactive materials inside the reactor under the premise of ensuring electrical continuity. However, in actual use, the electrical penetration has the most important indicators of sealing and radiation protection, and if any of the above fails, it will lead to nuclear leakage in the reactor; and high temperature will cause the sealing rubber ring to have a potential failure risk, which will greatly reduce the safety of the nuclear reactor system.

[0003] Therefore, in order to meet the requirements of the above working conditions and similar occasions, there is an urgent need for an electrical penetration component that can monitor pressure and temperature parameters throughout the entire process. Utility Model Content

[0004] The purpose to be achieved by the utility model is to provide a seven-core measuring and controlling electrical penetration component, which can measure and control the pressure and temperature parameters inside the electrical penetration component and improve the reliability of the system.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a seven-core measurement and control electrical penetration component, including an inner sleeve and an outer sleeve, the inner sleeve is inserted into the outer sleeve, the two ends of the inner sleeve expose the two end surfaces of the outer sleeve, the two ends of the inner sleeve are equipped with a detachable junction box, seven connectors are evenly arranged on the junction box, a temperature sensor and a pressure sensor are pre-embedded in the inner sleeve, and seven threading tubes corresponding to the seven connectors are penetrated, the outer sleeve is provided with a human-computer interaction interface, and the temperature sensor and the pressure sensor are electrically connected to the human-computer interaction interface after the leads pass through the threading tubes.

[0006] After adopting the above technical scheme, the utility model has the following advantages: first, by setting the temperature sensor and the pressure sensor, the tail end and pressure parameters inside the penetration piece can be monitored simultaneously. The temperature sensor and the pressure sensor are electrically connected to the human-machine interface after the lead wires pass through the threading tube respectively. The threading tube can make the lead wire routing more reasonable and intuitively display through the human-machine interaction interface. The operator can obtain important parameters immediately and respond or adjust quickly, thereby improving the response speed and work efficiency of the system, thereby improving the safety of the nuclear reactor system. Secondly, the junction boxes at both ends of the inner sleeve adopt a detachable design, which is convenient for rapid replacement or maintenance of sensors and connectors, reducing maintenance costs and time. At the same time, the modular layout of each sensor and connector is conducive to the location and processing of faults. Finally, the configuration of seven connectors allows flexible docking with different equipment or systems, improving the breadth and adaptability of application. Each connector corresponds to an independent threading tube to ensure the stability and safety of signal transmission.

[0007] Furthermore, the inner sleeve includes a barrel, a first connecting cover plate located at the head end of the barrel, and a second connecting cover plate located at the tail end of the barrel. The barrel is inserted into the outer sleeve from the head end. The first connecting cover plate, the second connecting cover plate and the barrel together form a closed cavity. The closed cavity is filled with filler. The seven wire threading tubes are inserted into the closed cavity from the second connecting cover plate and pass out of the closed cavity from the first connecting cover plate.

[0008] By adopting the above technical scheme, a closed cavity is formed by the first connecting cover plate, the second connecting cover plate and the barrel body, and the cavity is filled with filler, so as to improve the radiation shielding ability of the penetration piece and increase the safety of the system. Secondly, seven wire threading tubes are inserted from the second connecting cover plate, pass through the filler area, and then pass out from the first connecting cover plate. Such a layout facilitates the arrangement and management of the leads, makes the path of each wire threading tube clear, and facilitates future maintenance and replacement work. At the same time, it also ensures the isolation between the leads and reduces signal interference.

[0009] Furthermore, a filling hole is provided on the second connection cover plate, and the filling material is injected into the closed cavity through the filling hole.

[0010] By adopting the above technical solution, the filling material is injected through a special filling hole, so that the filling process can be controlled more accurately, avoiding the problem of uneven filling or difficulty in achieving the expected filling effect without guidance. Different application environments may require different types of fillers. By injecting through the filling hole, the filler can be flexibly selected and replaced according to actual needs, thereby improving the adaptability and customizability of the product.

[0011] Furthermore, one end of the outer sleeve through which the inner sleeve passes is provided with a stop ring surrounding the outer sleeve, the stop ring protrudes from the outer circumferential surface of the outer sleeve, the diameter of the second connecting cover plate is larger than that of the inner sleeve so as to protrude from the outer circumferential surface of the inner sleeve, the stop ring cooperates with the second connecting cover plate stopper to position the installation of the inner sleeve and the outer sleeve, and the stop ring and the second connecting cover plate are detachably connected by screws.

[0012] By adopting the above technical solution, through the cooperation between the stop ring and the second connecting cover plate, the installer can quickly and accurately complete the assembly of the inner sleeve and the outer sleeve without complicated alignment or measurement steps, which greatly simplifies the on-site installation work. Secondly, the diameter of the second connecting cover plate is larger than the inner sleeve and protrudes, forming a stable support structure with the stop ring on the outer sleeve, thereby increasing the lateral rigidity and vibration resistance of the entire electrical penetration part, especially in application environments with large vibration or impact, and can effectively protect internal components from damage. Finally, since the stop ring and the second connecting cover plate are detachably connected by screws, this means that when maintenance or adjustment of the position of the inner sleeve is required, the two components can be easily separated, necessary inspection or replacement can be carried out, and then re-fixed, which improves the convenience and flexibility of maintenance.

[0013] Furthermore, a first sealing ring is provided on the outer surface of the stop ring, and the first sealing ring is clamped between the stop ring and the second connecting cover plate.

[0014] By adopting the above technical solution, the addition of the first sealing ring not only strengthens the seal between the stop ring and the second connecting cover plate, ensuring the pressure inside the electrical penetration component, but also strengthens the connection between the stop ring and the second connecting cover plate.

[0015] Furthermore, a second sealing ring is provided on the outer surface of the second connection cover plate, and the second sealing ring is clamped between the junction box and the second connection cover plate.

[0016] By adopting the above technical solution, the addition of the second sealing ring not only strengthens the seal between the junction box and the second connection cover plate, further ensuring the pressure inside the electrical penetration piece, but also strengthens the connection between the junction box and the second connection cover plate.

[0017] Furthermore, the outer circumferential surface of the inner sleeve is circumferentially provided with an outer step, the inner circumferential surface of the outer sleeve is circumferentially provided with an inner step that engages with the outer step, and the inner sleeve and the outer sleeve are welded and connected at the inner step and the outer step.

[0018] By adopting the above technical solution, the welding point between the inner sleeve and the outer sleeve is designed to be stepped, and the buckling design of the outer step and the inner step increases the contact area between the two components, avoids direct penetration, and weakens the radiation leakage intensity.

[0019] Furthermore, the inner sleeve can be inserted into the outer sleeve, and the outer circumferential surface of one end of the outer sleeve is circumferentially provided with a first annular groove, and a third sealing ring is matched and installed in the first annular groove. After the inner sleeve is inserted into the outer sleeve, the third sealing ring is tightly attached to the inner circumferential surface of the outer sleeve.

[0020] By adopting the above technical solution, the third sealing ring is installed in the first annular groove of the inner sleeve. After the inner sleeve is inserted into the outer sleeve, the sealing ring is tightly attached to the inner circumferential surface of the outer sleeve, forming a reliable sealing barrier to further ensure the pressure inside the electrical penetration component.

[0021] Further, the threading tube includes a planar bend tube bent relative to the same plane; or, the threading tube includes a spatial bend bent relative to multiple planes.

[0022] By adopting the above technical solution, whether it is a flat bent tube or a space bent wire threading tube, the line can be turned within a limited space, avoiding the space occupation problem caused by right-angle turns. It is particularly suitable for installation environments with limited space. Secondly, the curved design can smoothly transition the direction of the lead and reduce the sharp change from straight line to bend, thereby reducing the stress concentration of the lead at the turn, reducing the damage or breakage of the lead caused by mechanical stress, and extending the service life of the lead. In addition, the curved wire threading tube is particularly suitable for situations where it is necessary to bypass obstacles or follow complex wiring paths, providing greater design freedom, so that electrical penetrations can adapt to more diverse installation environments.

[0023] Furthermore, the inner sleeve includes, from the head end to the tail end, a first sleeve, a first connecting cover plate, a first head pipe, a first connecting pipe, a first tail pipe and a second connecting cover plate in sequence, and the first connecting cover plate, the first sleeve, the first head pipe, the first connecting pipe, the first tail pipe and the second connecting cover plate are welded together as a whole, and the outer sleeve includes, from the head end to the tail end, a second head pipe, a second connecting pipe, a second tail pipe and a stop ring in sequence, and the second head pipe, the second connecting pipe, the second tail pipe and the stop ring are welded together as a whole.

[0024] By adopting the above technical solution, the segmented structural design allows each part of the inner sleeve and the outer sleeve to be designed and produced as an independent module, which is not only conducive to improving production efficiency, but also can flexibly adjust the size and material of each part according to different application scenarios, thereby improving the versatility and adaptability of the product. Secondly, each section is connected by welding to form a continuous and solid integrated structure. This design can effectively improve the overall mechanical strength and deformation resistance of the electrical penetration parts, especially when subjected to harsh working conditions such as high pressure and high temperature. It can maintain the stability of the structure and the reliability of the electrical connection. The welding points of each section can also be used as the key parts to strengthen the sealing treatment. Through precise welding technology and sealing measures, the sealing of the electrical penetration parts at each interface is ensured, and the internal pressure of the electrical penetration parts is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] Figure 1 It is a structural schematic diagram of the seven-core measurement and control electrical penetration component in the utility model;

[0027] Figure 2 For the utility model Figure 1 A magnified view of the structure at center A;

[0028] Figure 3 It is a structural schematic diagram of the seven-core measurement and control electrical penetration component in the utility model from another perspective;

[0029] Figure 4 This is a schematic diagram of the structure of the middle and outer sleeves of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the inner sleeve in the utility model;

[0031] Figure 6 This is the wiring diagram of the seven-core measurement and control electrical penetration in the utility model;

[0032] Figure 7 It is a structural schematic diagram of the junction box in the utility model;

[0033] Figure 8 For the utility model Figure 7 A magnified view of the structure at B in the middle;

[0034] Fig. 9 This is a schematic diagram of the structure of the plane elbow in the utility model;

[0035] Fig.10 This is a structural schematic diagram of another perspective of the plane elbow in the utility model;

[0036] Fig.11 This is a schematic diagram of the structure of the space elbow in the utility model;

[0037] Fig.12 This is a structural schematic diagram of the space elbow in the utility model from another perspective;

[0038] In the figure, 110, inner sleeve; 111, first connecting cover plate; 112, first sleeve; 113, first header pipe; 114, first connecting pipe; 115, first tail pipe; 116, second connecting cover plate; 117, closed cavity; 118, first annular groove; 119, outer step; 120, outer sleeve; 121, second header pipe; 122, second connecting pipe; 123, second tail pipe; 124, stop ring; 125, inner step; 13 0. Junction box; 131. Connector; 140. Lead wire; 151. Temperature sensor; 152. Pressure sensor; 153. First flange; 154. Junction box sleeve; 155. Mounting plate; 156. Second flange; 157. Sealing bolt; 158. O-ring; 160. Threading tube; 170. Human-machine interface; 180. Filling material; 191. First sealing ring; 192. Second sealing ring; 193. Third sealing ring. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0040] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0041] It should be understood that in various embodiments of the present invention, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0042] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0043] It should be understood that in the present utility model, "plurality" refers to two or more than two. "And / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or any three of X, Y, and Z are included.

[0044] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0045] like Figures 1 to 12 As shown, the utility model provides a seven-core measurement and control electrical penetration component, which is suitable for a bridge for signal transmission inside and outside a nuclear reactor. The seven-core measurement and control electrical penetration component includes an inner sleeve 110 and an outer sleeve 120. The outer sleeve 120 is pre-installed on the containment vessel or pressure vessel of the reactor. The inner sleeve 110 is inserted into the outer sleeve 120. The two ends of the inner sleeve 110 expose the two end surfaces of the outer sleeve 120. Removable junction boxes 130 are installed at both ends of the inner sleeve 110. Seven connectors 131 are evenly arranged on the junction box 130. A temperature sensor 151 and a pressure sensor 152 are pre-buried in the inner sleeve 110, and seven threading tubes 160 are respectively arranged corresponding to the seven connectors 131. A human-machine interaction interface 170 is provided on the outer sleeve 120. The temperature sensor 151 and the pressure sensor 152 are electrically connected to the human-machine interaction interface 170 after passing through the threading tube 160 through the lead 140.

[0046] First, by setting the temperature sensor 151 and the pressure sensor 152, the tail end and pressure parameters inside the penetration piece can be monitored simultaneously. The temperature sensor 151 and the pressure sensor 152 are respectively connected to the human-machine interface 170 after passing through the threading tube 160 through the lead 140. The threading tube 160 can make the lead 140 routing more reasonable and display it intuitively through the human-machine interface 170. The operator can obtain important parameters immediately and respond or adjust quickly, thereby improving the response speed and work efficiency of the system, thereby improving the safety of the nuclear reactor system. Secondly, the junction box 130 at both ends of the inner sleeve 110 adopts a detachable design, which is convenient for rapid replacement or maintenance of sensors and connectors 131, reducing maintenance costs and time. At the same time, the modular layout of each sensor and connector 131 is conducive to the location and processing of faults. Finally, the configuration of seven connectors 131 allows flexible docking with different devices or systems, improving the breadth and adaptability of application. Each connector 131 corresponds to an independent threading tube 160 to ensure the stability and safety of signal transmission.

[0047] It should be noted that the human-machine interaction interface 170 can be an intelligent computer display screen, which has the function of displaying and analyzing the data monitored by the pressure sensor 152 and the temperature sensor 151. When the data exceeds the set safety range, an alarm can be issued to prompt the staff.

[0048] Specifically, the inner sleeve 110 includes a barrel, a first connecting cover plate 111 located at the head end of the barrel, and a second connecting cover plate 116 located at the tail end of the barrel. The barrel passes through the outer sleeve 120 from the head end. The first connecting cover plate 111, the second connecting cover plate 116 and the barrel body together form a closed cavity 117. The closed cavity 117 is filled with a filler 180 to improve the radiation shielding capability of the penetration piece and increase the safety of the system. Secondly, seven threading tubes 160 pass through the closed cavity 117 from the second connecting cover plate 116 and pass through the closed cavity 117 from the first connecting cover plate 111, which facilitates the arrangement and management of the lead wires 140, makes the path of each threading tube 160 clear and definite, and facilitates future maintenance and replacement work. At the same time, it also ensures the isolation between the leads 140 and reduces signal interference.

[0049] To facilitate filling, a filling hole is provided on the second connecting cover plate 116, and the filler 180 is injected into the closed cavity 117 through the filling hole. The filling process can be controlled more accurately, avoiding the problem of uneven filling or difficulty in achieving the expected filling effect without guidance. Different application environments may require different types of fillers 180. By injecting through the filling hole, the filler 180 can be flexibly selected and replaced according to actual needs, thereby improving the adaptability and customizability of the product.

[0050] It should be noted that when the radiation source is only gamma rays, the filler 180 is cast iron sand which can meet the shielding function. When filling, the cast iron sand is compacted by vibration with an amplitude of not less than 10 mm and a frequency of not less than 60 times / min. After vibrating for 6 minutes, fill the iron sand 3 times until it is full. When neutron rays still exist in the radiation source, the filler 180 includes polyethylene material and cast iron sand. When in use, the polyethylene material is first filled into the closed cavity 117, and then the cast iron sand is filled to meet the shielding function, thereby realizing the composite shielding of the penetration piece.

[0051] The inner sleeve 110 includes a first sleeve 112, a first connection cover plate 111, a first header pipe 113, a first connection pipe 114, a first tail pipe 115, and a second connection cover plate 116 from the head end to the tail end. The first sleeve 112, the first connection cover plate 111, the first header pipe 113, the first connection pipe 114, the first tail pipe 115, and the second connection cover plate 116 are welded together. The first sleeve 112, the first header pipe 113, the first connection pipe 114, the first tail pipe 115, and the second connection cover plate 116 constitute the barrel. The segmented structural design allows each part of the inner sleeve 110 and the outer sleeve 120 to be designed and produced as an independent module. This is not only conducive to improving production efficiency, but also can flexibly adjust the size and material of each part according to different application scenarios, improving the versatility and adaptability of the product. Secondly, each section is connected by welding to form a continuous and solid integrated structure. This design can effectively improve the overall mechanical strength and deformation resistance of the electrical penetration, especially when subjected to harsh working conditions such as high pressure and high temperature. It can maintain the stability of the structure and the reliability of the electrical connection. The welding points of each section can also be used as the key parts to strengthen the sealing treatment. Through precise welding technology and sealing measures, the sealing of the electrical penetration at each interface is ensured, and the internal pressure of the electrical penetration is guaranteed.

[0052] In order to facilitate the installation of the inner sleeve 110, the end of the outer sleeve 120 for the inner sleeve 110 to penetrate is provided with a stop ring 124 surrounding the outer sleeve 120, and the stop ring 124 protrudes from the outer circumferential surface of the outer sleeve 120. The diameter of the second connecting cover plate 116 is larger than that of the inner sleeve 110 so as to protrude from the outer circumferential surface of the inner sleeve 110, thereby increasing the lateral rigidity and vibration resistance of the entire electrical penetration component, especially in an application environment with large vibration or impact, which can effectively protect the internal components from damage. The stop ring 124 and the second connecting cover plate 116 stop Cooperating with the installation of positioning the inner sleeve 110 and the outer sleeve 120, the installer can quickly and accurately complete the assembly of the inner sleeve 110 and the outer sleeve 120 without complicated alignment or measurement steps, which greatly simplifies the on-site installation work. Finally, the stop ring 124 and the second connecting cover plate 116 are detachably connected by screws, which means that when maintenance or adjustment of the position of the inner sleeve 110 is required, the two components can be easily separated, necessary inspection or replacement can be carried out, and then re-fixed, which improves the convenience and flexibility of maintenance.

[0053] In order to improve the sealing effect between the inner sleeve 110 and the outer sleeve 120, a first sealing ring 191 is provided on the outer surface of the stop ring 124, and the first sealing ring 191 is clamped between the stop ring 124 and the second connecting cover plate 116. The addition of the first sealing ring 191 not only strengthens the sealing between the stop ring 124 and the second connecting cover plate 116, and ensures the pressure inside the electrical through-hole component, but also reinforces the connection between the stop ring 124 and the second connecting cover plate 116.

[0054] In order to further enhance the sealing effect between the inner sleeve 110 and the outer sleeve 120, an outer step 119 is circumferentially provided on the outer circumferential surface of the inner sleeve 110, and an inner step 125 which is snapped with the outer step 119 is circumferentially provided on the inner circumferential surface of the outer sleeve 120. The inner sleeve 110 and the outer sleeve 120 are welded together at the inner step 125 and the outer step 119. The snap-fit ​​design of the outer step 119 and the inner step 125 increases the contact area between the two components, avoids straight-through, and weakens the intensity of radiation leakage.

[0055] It should be noted that both ends of the inner sleeve 110 are provided with outer steps 119 , and both ends of the outer sleeve 120 are provided with inner steps 125 , thereby forming a sealing effect on both ends.

[0056] In addition, the inner sleeve 110 can be inserted into the outer sleeve 120, and the outer circumferential surface of one end is circumferentially provided with a first annular groove 118, and the third sealing ring 193 is matched and installed in the first annular groove 118. After the inner sleeve 110 is inserted into the outer sleeve 120, the third sealing ring 193 is tightly attached to the inner circumferential surface of the outer sleeve 120, forming a reliable sealing barrier to further ensure the pressure inside the electrical penetration component.

[0057] In order to improve the sealing effect between the inner sleeve 110 and the junction box 130, a second sealing ring 192 is provided on the outer surface of the second connecting cover plate 116, and the second sealing ring 192 is clamped between the junction box 130 and the second connecting cover plate 116. The addition of the second sealing ring 192 not only strengthens the sealing between the junction box 130 and the second connecting cover plate 116, further ensuring the pressure inside the electrical penetration component, but also reinforces the connection between the junction box 130 and the second connecting cover plate 116.

[0058] In this embodiment, the outer sleeve 120 includes a second first pipe 121, a second connecting pipe 122, a second tail pipe 123 and a stop ring 124 from the head end to the tail end, and the second first pipe 121, the second connecting pipe 122, the second tail pipe 123 and the stop ring 124 are welded together. The segmented structural design allows the various parts of the inner sleeve 110 and the outer sleeve 120 to be designed and produced as independent modules, which is not only conducive to improving production efficiency, but also can flexibly adjust the size and material of each part according to different application scenarios, thereby improving the versatility and adaptability of the product. Secondly, each section is connected by welding to form a continuous and solid integrated structure. This design can effectively improve the overall mechanical strength and deformation resistance of the electrical penetration, especially when subjected to harsh working conditions such as high pressure and high temperature, it can maintain the stability of the structure and the reliability of the electrical connection. The welding points of each section can also be used as key parts to strengthen the sealing treatment. Through precise welding technology and sealing measures, the sealing of the electrical penetration at each interface is ensured, and the internal pressure of the electrical penetration is guaranteed.

[0059] It should be noted that the stop ring 124 can be a flange.

[0060] In order to facilitate the passage of the lead 140, the wire threading tube 160 usually adopts a curved wire threading tube 160, which can realize the turning of the line in a limited space, avoiding the space occupation problem caused by right-angle turns, and is particularly suitable for installation environments with limited space. Secondly, the curved design can smoothly transition the direction of the lead 140 and reduce the sharp change from straight line to bend, thereby reducing the stress concentration of the lead 140 at the turn, reducing the damage or breakage of the lead 140 caused by mechanical stress, and extending the service life of the lead 140. In addition, the curved wire threading tube 160 is particularly suitable for situations where it is necessary to bypass obstacles or follow complex wiring paths, providing greater design freedom, so that electrical penetrations can adapt to more diverse installation environments.

[0061] Specifically, according to the type of lead 140 and the radiation resistance requirement, when the radiation resistance requirement is low, such as Fig. 9 and Fig.10 As shown, the threading tube 160 includes a flat elbow tube bent relative to the same plane; Fig.11 and Fig.12As shown, when the radiation resistance requirement is higher, the threading tube 160 includes a spatial bend relative to a plurality of plane bends.

[0062] In addition, the junction box 130 is composed of a first flange 153, a junction box sleeve 154, a mounting plate 155, a second flange 156, a sealing bolt 157, and an O-ring 158, which are connected to each other by welding. The junction box 130 is designed as a modular assembly to facilitate wiring without damaging the cable shielding sheath.

[0063] It should be noted that the welding connection mentioned in the present invention specifically adopts argon arc welding.

[0064] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A seven-core measurement and control electrical penetration, characterized in that: It includes an inner sleeve and an outer sleeve, the inner sleeve is inserted into the outer sleeve, the two ends of the inner sleeve expose the two end surfaces of the outer sleeve, the two ends of the inner sleeve are equipped with detachable junction boxes, seven connectors are evenly arranged on the junction box, a temperature sensor and a pressure sensor are pre-buried in the inner sleeve, and seven threading tubes corresponding to the seven connectors are passed through the inner sleeve, a human-computer interaction interface is provided on the outer sleeve, and the temperature sensor and the pressure sensor are electrically connected to the human-computer interaction interface after the leads pass through the threading tubes.

2. The seven-core measurement and control electrical penetration piece according to claim 1 is characterized in that: The inner sleeve includes a barrel, a first connecting cover plate located at the head end of the barrel, and a second connecting cover plate located at the tail end of the barrel. The barrel is inserted into the outer sleeve from the head end. The first connecting cover plate, the second connecting cover plate and the barrel are combined to form a closed cavity. The closed cavity is filled with filler. The seven threading tubes are inserted into the closed cavity through the second connecting cover plate and pass out of the closed cavity through the first connecting cover plate.

3. The seven-core measurement and control electrical penetration piece according to claim 2 is characterized in that: The second connecting cover plate is provided with a filling hole, and the filling material is injected into the closed cavity through the filling hole.

4. The seven-core measurement and control electrical penetration piece according to claim 2 is characterized in that: The end of the outer sleeve through which the inner sleeve passes is provided with a stop ring surrounding the outer sleeve, and the stop ring protrudes from the outer circumferential surface of the outer sleeve. The diameter of the second connecting cover plate is larger than that of the inner sleeve so as to protrude from the outer circumferential surface of the inner sleeve. The stop ring cooperates with the second connecting cover plate stopper to position the installation of the inner sleeve and the outer sleeve, and the stop ring and the second connecting cover plate are detachably connected by screws.

5. The seven-core measurement and control electrical penetration piece according to claim 4 is characterized in that: A first sealing ring is provided on the outer surface of the stop ring, and the first sealing ring is clamped between the stop ring and the second connecting cover plate.

6. The seven-core measurement and control electrical penetration piece according to claim 4 is characterized in that: A second sealing ring is disposed on the outer surface of the second connection cover plate, and the second sealing ring is clamped between the junction box and the second connection cover plate.

7. The seven-core measurement and control electrical penetration piece according to claim 1 is characterized in that: The outer circumferential surface of the inner sleeve is circumferentially provided with an outer step, the inner circumferential surface of the outer sleeve is circumferentially provided with an inner step that is engaged with the outer step, and the inner sleeve and the outer sleeve are welded and connected at the inner step and the outer step.

8. The seven-core measurement and control electrical penetration piece according to claim 1, characterized in that: The inner sleeve can be inserted into the outer sleeve, and the outer circumferential surface of one end of the outer sleeve is circumferentially provided with a first annular groove, and a third sealing ring is matched and installed in the first annular groove. After the inner sleeve is inserted into the outer sleeve, the third sealing ring is tightly attached to the inner circumferential surface of the outer sleeve.

9. The seven-core measurement and control electrical penetration piece according to claim 1, characterized in that: The threading tube includes a plane bend tube bent relative to the same plane; or, the threading tube includes a spatial bend tube bent relative to multiple planes.

10. The seven-core measurement and control electrical penetration piece according to claim 1, characterized in that: The inner sleeve includes, from the head end to the tail end, a first sleeve, a first connecting cover plate, a first head pipe, a first connecting pipe, a first tail pipe and a second connecting cover plate in sequence, and the first connecting cover plate, the first sleeve, the first head pipe, the first connecting pipe, the first tail pipe and the second connecting cover plate are welded together as a whole, and the outer sleeve includes, from the head end to the tail end, a second head pipe, a second connecting pipe, a second tail pipe and a stop ring in sequence, and the second head pipe, the second connecting pipe, the second tail pipe and the stop ring are welded together as a whole.

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