Annular multilayer high-temperature pressure-bearing electric connector

Abstract

The invention belongs to the technical field of electric connectors, and particularly relates to an annular multilayer high-temperature pressure-bearing electric connector which comprises a shell, a first end face of the shell is provided with a cavity I, an electrode assembly is installed in the cavity I, a second end face of the shell is provided with a cavity II, the first end face and the second end face are oppositely arranged, and the cavity II is used for installing an electrode assembly in the cavity II. A partition plate is arranged between the cavity II and the cavity I, a hole is formed in the partition plate, the cavity I is filled with a sealing insulator, the sealing insulator is used for filling gaps among all parts of the electrode assembly to achieve sealing, the electrode assembly comprises an electrode and a contact pin, the tail end of the contact pin is electrically connected with the electrode, and the tail end of the contact pin is electrically connected with the electrode. A gap between the pin and the hole is sealed through a sealing member. The electrodes are assembled in a layer-by-layer nesting mode, each side electrode is a complete ring, each ring electrode is led out through a contact pin below a product, and the whole structure meets the requirements of sealing, insulation and signal transmission in a high-temperature and high-pressure environment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of connectors, and particularly relates to a ring-shaped multilayer high-temperature pressure-bearing electric connector. BACKGROUND

[0002] In the logging process, data collection needs to be carried out on the stratum under the stratum. Due to the high-temperature and high-pressure characteristics of the stratum, a connector capable of bearing high temperature and high pressure needs to be provided to realize data transmission to the ground.

[0003] In the related prior art, the electrodes of the existing high-temperature pressure-bearing electric connector on the market are mostly small in area and circular, and the different electrodes are linearly arranged independently. With the development of technology, the electrodes of the high-temperature pressure-bearing electric connector need to have a larger area to realize more efficient work, and the different electrodes need to be nested in layers. In addition, the existing high-temperature pressure-bearing connector is mostly a one-layer sealing structure and has no protection measures. When the sealing structure fails, serious consequences will be caused, for example, water entering the equipment will cause short circuit of the equipment. SUMMARY

[0004] The application aims to solve the problems in the prior art and provides a ring-shaped multilayer high-temperature pressure-bearing electric connector. The connector can be used for signal transmission in a high-temperature and high-pressure environment. The electrodes are assembled in a nested manner, each side electrode is a complete ring, and each ring electrode is led out by a pin below the product. The overall structure meets the sealing, insulation and signal transmission requirements in a high-temperature and high-pressure environment.

[0005] The application provides a ring-shaped multilayer high-temperature pressure-bearing electric connector, which comprises a shell. A cavity I is arranged on a first end face of the shell. An electrode assembly is arranged in the cavity I. A cavity II is arranged on a second end face of the shell. The first end face and the second end face are oppositely arranged. A partition plate is arranged between the cavity II and the cavity I. The partition plate is provided with a through hole. A sealing insulator made of a flexible material is filled in the cavity I. The sealing insulator is used to fill the gap between the components of the electrode assembly. The electrode assembly comprises an electrode and a pin. The tail end of the pin is electrically connected with the electrode. The head end of the pin penetrates through the through hole and extends into the cavity II. The gap between the pin and the through hole is sealed by a sealing element.

[0006] As a preferred scheme, the electrode is provided with a plurality of electrodes and is arranged in a nested manner from the outside to the inside.

[0007] As a preferred scheme, the electrode comprises a center electrode and a peripheral electrode arranged outside the center electrode. The center electrode is a solid ring structure, and the peripheral electrode is a hollow ring structure.

[0008] As a preferred solution, the end surface of the peripheral electrode is circular, elliptical or square ring shaped.

[0009] As a preferred solution, the electrode assembly further comprises a fixing plate which is shaped to fit the adjacent electrode, and the electrode is fixed in the cavity I directly or through the fixing plate.

[0010] As a preferred solution, a bottom insulator is further provided, which is installed at the bottom of the cavity I and fixed to the shell, and a recess II is provided on the end surface of the bottom insulator, in which the electrodes are installed respectively.

[0011] As a preferred solution, the partition plate and the bottom insulator are provided with flow channel injection ports for injecting the sealing insulator.

[0012] As a preferred solution, the electrode assembly further comprises a partition insulator, and a plurality of electrodes are provided, and the partition insulator is provided between the shell and the electrode assembly and between the electrodes, and a pressurizing part is provided at one end of the partition insulator towards the inside of the cavity I, and the sealing insulator is filled at one side of the partition insulator, and the pressurizing part of the partition insulator is in contact with the sealing insulator.

[0013] As a preferred solution, the pressurizing part is a protruding structure towards the sealing insulator.

[0014] As a preferred solution, a lug is formed on the side surface of the electrode, and a recess I is provided on the fixing plate to fit the lug.

[0015] As a preferred solution, a flow channel through hole is formed on the side surface of the peripheral electrode.

[0016] As a preferred solution, an exhaust hole is formed on the side wall of the partition insulator along the axial direction.

[0017] As a preferred solution, a protruding rib is formed on the side wall of the partition insulator, and a ring groove step is formed on the side surface of the electrode to cooperate with the protruding rib, and the ring groove step of the electrode limits the partition insulator from being pulled out to the outside.

[0018] Advantages One, the scheme can be applied to the high temperature and high pressure environment under the formation data collection under the formation in the logging process through the structure optimization, the connector has two layers of pressure sealing structure, when one layer of sealing fails, the second layer of sealing will be protected twice to avoid serious consequences, wherein the first layer of pressure sealing structure fills the flexible sealing insulator into all gaps of the electrode assembly in cavity I, so as to form a whole with all parts and realize sealing pressure bearing, meanwhile, the parts of the electrode assembly adopt high temperature resistant material, which can realize overall high temperature resistance, the flexible sealing insulator filling design can realize internal high pressure resistance, when external pressure exists, the flexible sealing insulator will be compressed, and after compression, the sealing insulator will be pressed between the parts to realize primary sealing; secondly, the gap between the pin and the inner wall of the perforated partition plate is sealed twice by the sealing ring on the pin.

[0019] Secondly, the scheme adopts the ring electrode structure with larger contact area, and different electrodes need to be nested layer by layer, and the number of electrodes can be set according to the need, the scheme realizes higher efficiency of work through the new type structure and arrangement mode of the above electrode, so that the electric connector has larger contact area. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the application embodiments or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 It is a perspective view of the electric connector of the application; Figure 2 It is a top view of the electric connector of the application; Figure 3 It is a sectional view of the electric connector of the application Figure 1 ; Figure 4 It is a sectional view of the electric connector of the application Figure 2 ; Figure 5 It is a sectional view of the electric connector of the application Figure 6 It is an explosion schematic view of the related parts of one layer of electrodes of the electric connector of the application; Figure 7 It is an explosion schematic view of the related parts of two layers of electrodes of the electric connector of the application; Figure 8 It is an explosion schematic view of the related parts of three layers of electrodes of the electric connector of the application; Figure 9 The exploded view of the four-layer electrode related parts of the electric connector of the present application; Figure 10 The internal structure of the shell of the present application; Markings in the figure: 1. Shell, 11. Cavity I, 12. Cavity II, 13. Partition, 14. Perforation, 15. Outer shell I, 16. Outer shell II, 17. Sealing groove, 18. Flow passage inlet, 19. Blind hole, 110. Fixing hole II; 2. Electrode assembly; 21. Electrode, 211. Layer I electrode, 212. Layer II electrode, 213. Layer III electrode, 214. Layer IV electrode, 215. Lugs, 216. Ring groove step, 217. Flow passage through hole, 218. Center electrode, 219. Peripheral electrode; 22. Pin, 221. Single-core pressure-bearing pin, 222. Ground pin, 223. Sealing ring; 23. Isolating insulator, 231. Isolating insulating sleeve I, 232. Isolating insulating sleeve II, 233. Isolating insulating sleeve III, 234. Isolating insulating sleeve IV, 235. Pressurizing part, 236. Exhaust hole, 237. Protruding rib; 24. Sealing insulator; 25. Fixed pressing plate, 251. Layer I pressing plate, 253. Layer III pressing plate, 254. Layer IV pressing plate, 255. Groove I, 256. Fixing hole I, 257. Through hole; 26. Bottom insulator, 261. Groove II; 27. Screw I; 28. Screw II. DETAILED DESCRIPTION

[0022] The present application will now be described in greater detail by way of example only with reference to the accompanying drawings. It is to be understood that the elements, structures and features of one embodiment can be beneficially incorporated into other embodiments without further recitation.

[0023] It should be noted that unless otherwise defined, technical and scientific terms used herein have the same meaning as those commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in the description of the application herein and the claims that follow is not intended to be limiting of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It will be further understood that the use of the singular includes the plural unless otherwise clear from the context. It will be further understood that terms such as "including" and / or "comprising," when used herein, mean "including or comprising, but not limited to."

[0024] As shown in the figure, the embodiment provides a ring-shaped multi-layer high-temperature pressure-bearing electric connector, which comprises a shell 1 made of metal material, the shell 1 comprises a cavity Ⅰ 11 located at a first end face and a cavity Ⅱ 12 located at a second end face, the first end face and the second end face are two end faces of the shell 1 arranged oppositely. The shell 1 comprises an outer shell Ⅰ 15 and an outer shell Ⅱ 16 along the axial direction, and an external step is formed at the connection between the outer shell Ⅰ 15 and the outer shell Ⅱ 16, as shown in Figure 3 The first end face is the upper end face shown in the figure, the second end face is the lower end face shown in the figure, the cavity Ⅰ 11 and the cavity Ⅱ 12 are separated by a partition plate 13, and the partition plate 13 is provided with a through hole 14, the cavity Ⅰ 11 is used for mounting an electrode assembly 2, each electrode 21 of the electrode assembly 2 is connected with the tail of a corresponding pin 22, the through hole 14 is used for the head end of the pin 22 to pass through and extend into the cavity Ⅱ 12. The gaps between each part of the electrode assembly 2 in the cavity Ⅰ 11 are filled with a flexible sealing insulator 24; thereby realizing the sealing of the electric connector, the flexible sealing insulator 24 can be a vulcanized rubber body or other materials, the insulation and pressure-bearing sealing between each layer of electrodes are realized through the sealing insulator 24, when there is external pressure, the flexible sealing insulator 24 will be compressed, and after compression, the sealing insulator 24 and each part are further compressed to realize primary sealing and pressure-bearing. In order to further improve the sealing and pressure-bearing performance, the pin 22 is sleeved with a sealing ring 223, by placing the O-shaped sealing ring 223 in the through hole 14, the pin 22 and the inner wall of the through hole 14 can be further sealed and pressure-bearing, thereby achieving the effect of secondary sealing, therefore, the scheme realizes twice sealing through the above structure, when the primary sealing fails, the secondary sealing can provide secondary protection, so as to avoid causing serious consequences such as short circuit of the equipment. In order to realize the high-temperature resistance performance of the electric connector, each part of the electric connector is made of high-temperature resistant parts. The outer shell Ⅱ 16 of the second end of the shell 1 is provided with an O-shaped sealing groove 17 in the ring direction, and the sealing groove 17 can realize the sealing effect with the external structure by cooperating with the O-shaped ring.

[0025] In a typical embodiment of the present application, the structure is described with an electrical connector having four-core electrodes: the electrode assembly 2 includes four layers of metal electrodes 21 in a nested design, and in other embodiments, the number of electrodes is not limited to four layers. The electrodes 21 and the housing 1 are insulated by the isolation insulator 23, which is arranged near the first end of the electrode 21 (the first end refers to the end of the electrode 21 near the first end surface), and the isolation insulator 23 is made of insulating material. The four layers of electrodes 21 include, from outside to inside, layer I electrode 211, layer II electrode 212, layer III electrode 213, and layer IV electrode 214, which are designed in a nested manner from outside to inside. The layer I electrode 211, layer II electrode 212, and layer III electrode 213 are annular hollow peripheral electrodes 219, which can be in the form of hollow square rings, elliptical rings, or circular rings, etc., thereby having a larger contact area. The layer IV electrode 214 is a central electrode 218 in the form of an annular solid structure, which can be in the form of a solid square, an ellipse, or a circle, etc. The electrodes of the present application have a nested feature and a large area, which can achieve more efficient measurement data collection. The isolation insulator 23 includes, from outside to inside, isolation insulating sleeve I 231, isolation insulating sleeve II 232, isolation insulating sleeve III 233, and isolation insulating sleeve IV 234. The isolation insulating sleeve I 231 is located in the gap between the housing 1 and the layer I electrode 211 to achieve insulation and isolation between the housing 1 and the layer I electrode 211. The isolation insulating sleeve II 232 is located in the gap between the layer I electrode 211 and the layer II electrode 212 to achieve insulation and isolation between the layer I electrode 211 and the layer II electrode 212. The isolation insulating sleeve III 233 is located in the gap between the layer II electrode 212 and the layer III electrode 213 to achieve insulation and isolation between the layer II electrode 212 and the layer III electrode 213. The isolation insulating sleeve IV 234 is located in the gap between the layer III electrode 213 and the layer IV electrode 214 to achieve insulation and isolation between the layer III electrode 213 and the layer IV electrode 214. The second end of the electrode 21 (the second end refers to the end of the electrode inside the cavity I 111) is provided with a fixed pressing plate 25, which is made of insulating material. The electrode 21 is fixed inside the cavity I 111 by screws II 28 or through the fixed pressing plate 25 by screws I 27. The fixed pressing plate 25 includes, from outside to inside, layer I pressing plate 251, layer III pressing plate 253, and layer IV pressing plate 254. The layer I pressing plate 251 is located in the gap between the layer I electrode 211 and the layer II electrode 212 to fix the layer I electrode 211. The layer III pressing plate 253 is located in the gap between the layer II electrode 212 and the layer III electrode 213 to fix the layer III electrode 213. The layer IV pressing plate 254 is located in the gap between the layer III electrode 213 and the layer IV electrode 214 to fix the layer IV pressing plate 254. The layer II electrode 212 has a threaded hole at the lower end surface, which is directly fixed by a screw.

[0026] The structure of each component is described below. For ease of description, the following is a simplified explanation. Figure 3 The upper end of the housing 1 is the upper surface of the electrical connector. The housing 1 is designed with two cavities, namely cavity I 11 and cavity II 12. The upper cavity I 11 contains the electrode assembly 2. The electrode assembly 2 includes each layer of insulating material 23, each layer of fixing plate 25, each layer of electrode 21, a bottom insulating material 26, a sealing insulating material 24, and each pin 22. The pin 22 includes a single-core pressure-bearing pin 221 and a grounding pin 222. The tail ends of the single-core pressure-bearing pin 221 and the grounding pin 222 are connected to the lower ends of each layer of electrode 21. The tip of the pin 222 extends through the perforation 14 of the partition 13 and is fixed inside the cavity II 12. The bottom of the cavity I 11 is provided with several threaded blind holes 19 for connecting with the fixing plates 25 of each layer by screws I 27 to fix the electrodes 21 of each layer. The partition 13 is also provided with several flow channel inlets 18 for the flexible material sealing insulator 24 to be injected into the gaps between the components inside the cavity I 11. The outside of the pin 22 is formed with an annular groove for installing the O-ring 223 to seal the gap between the pin 22 and the perforation 14.

[0027] In this design, the insulating sleeve I231 is an annular sleeve structure. Its outer annular surface contacts the inner wall of the cavity I11 of the housing 1, and its inner annular surface contacts the first-layer electrode 211. The insulating sleeve I231 and the first-layer electrode 211 are axially stopped by a boss structure, as shown in the figure. The inner annular surface of the insulating sleeve I231 is provided with a rib 237 protruding inward. The rib 237 can be provided in a full circumference or a non-full circumference manner. The outer annular surface of the first-layer electrode 211 is provided with an annular groove step 216 protruding outward. The rib 237 and the annular groove step 216 are in contact, thereby forming an axial stop and limiting of the insulating sleeve I231 through the first-layer electrode 211, preventing the insulating sleeve I231 from falling out of the housing 1. The insulating sleeve I231 is provided with an vent hole 236 through the axial direction. The lower end face of the insulating sleeve I231 is provided with a pressure part 235; the cross-section of the pressure part 235 is a pointed structure that is wider at the top and narrower at the bottom, an inverted trapezoidal structure, or a downwardly convex arc-shaped surface structure.

[0028] In this embodiment, the first layer plate 251 is a hollow annular structure and is made of insulating material. The outer annular surface of the first layer plate 251 is in contact with the first layer electrode 211, and the inner annular surface of the first layer plate 251 is in contact with the second layer electrode 212. The entire annular structure of the first layer plate 251 has a through-hole I256 formed along the axial direction. The fixing hole I256 is used to pass through the screw I27 and fix the first layer plate 251 to the threaded blind hole 19 of the housing 1. The outer annular surface of the first layer plate 251 is provided with grooves I255 that are spaced apart.

[0029] In this design, the first-layer electrode 211 is an annular hollow structure made of metal. The inner annular surface of the first-layer electrode 211 is provided with a lug 215 corresponding to the groove I 255. After the first-layer pressure plate 251 and the first-layer electrode 211 are assembled, the lug 215 enters the groove I 255 to form an axial position limit. The first-layer pressure plate 251 presses and fixes the first-layer electrode 211 in the housing 1 through the structural cooperation between the groove I 255 and the lug 215. A through flow channel hole 217 is formed on the annular sidewall of the first-layer electrode 211.

[0030] In this embodiment, the insulating sleeve II 232 is a hollow annular structure made of insulating material. Its outer annular surface contacts the inner wall of the first-layer electrode 211, and its inner annular surface contacts the outer wall of the second-layer electrode 212. The inner annular surface of the insulating sleeve II 232 is provided with raised ribs 237. The raised ribs 237 can be provided around the entire circumference or not. The insulating sleeve II 232 is provided with a through vent hole 236 along the axial direction. The lower end face of the insulating sleeve I 231 is provided with a pressure part 235. The cross-section of the pressure part 235 is a pointed structure that is wider at the top and narrower at the bottom, or an inverted trapezoidal structure, or a downwardly convex arc-shaped surface structure.

[0031] In this design, the second-layer electrode 212 is an annular hollow structure made of metal. Annular groove steps 216 are provided on the inner and outer walls of the second-layer electrode 212. These steps engage with the corresponding ribs 237 of the insulating sleeves to axially stop and limit the insulating sleeves II 232 and III 233, preventing them from detaching from the housing 1. A through-hole 217 is provided on the side wall of the second-layer electrode 212. A threaded connection hole is provided on the lower end face of the second-layer electrode 212, and a fixing hole II 110 is provided on the partition plate 13. A countersunk screw II 28 passes through the fixing hole II 110 from bottom to top and is screwed into the threaded connection hole on the lower end face of the second-layer electrode 212 to fix the second-layer electrode 212. The fixing hole II 110 is a through-hole structure.

[0032] In this embodiment, the insulating sleeve Ⅲ233 is a ring structure and made of insulating material. Its outer ring surface is in contact with the inner wall of the second layer electrode 212, and its inner ring surface is in contact with the third layer electrode 213. The outer ring surface of the insulating sleeve Ⅲ233 is provided with a raised rib 237, which can be provided around the entire circumference or not. The insulating sleeve Ⅲ233 is provided with an exhaust hole 236 through the axial direction. The lower end face of the insulating sleeve Ⅲ233 is provided with a pressure part 235. The cross-section of the pressure part 235 is a pointed structure with a wider top and a narrower bottom, or an inverted trapezoidal structure, or a downwardly convex arc-shaped surface structure.

[0033] In this design, the third-layer electrode 213 has an annular structure and is made of metal. The outer wall of the third-layer electrode 213 contacts the inner wall of the insulating sleeve III 233, and the inner wall of the third-layer electrode 213 contacts the outer wall of the insulating sleeve IV 234. An annular groove step 216 is formed on the inner wall of the third-layer electrode 213, which cooperates with the corresponding rib 237 of the insulating sleeve to axially stop and limit the rib 237 of the insulating sleeve IV 234. The insulating sleeve IV 234 has a through vent hole 236 along the axial direction. A lug 215 is provided on the outer wall of the third-layer electrode 213 near the bottom. A through flow channel hole 217 is provided on the side wall of the third-layer electrode 213.

[0034] In this design, the III-layer plate 253 is an annular structure made of insulating material. A groove I255 is formed on the inner annular wall of the III-layer plate 253. The groove I255 is used to form a fixed fit with the lug 215. A fixing hole I256 is provided on the annular surface of the III-layer plate 253. A screw I27 passes through the fixing hole I256 to fix the III-layer plate 253 to the threaded blind hole 19 of the housing 1, thereby fixing the III-layer electrode 213 inside the cavity I11 of the housing 1. A through hole 257 is also provided on the annular surface of the III-layer plate 253. The through hole 257 is designed to coincide with the flow channel inlet 18 on the bottom insulator 26 and the partition 13, allowing the flexible sealing insulator 24 to fill into the cavity I11.

[0035] In this design, the insulating sleeve Ⅳ234 is a ring-shaped structure made of insulating material. Its outer ring surface is in contact with the inner wall of the Ⅲ layer electrode 213, and its inner ring surface is in contact with the Ⅳ layer electrode 214. The outer ring surface of the Ⅳ layer electrode 214 is provided with a rib 237, which can be provided in a full circumference or not. The side wall of the insulating sleeve Ⅳ234 is provided with a through vent hole 236 along the axial direction.

[0036] In this embodiment, the IV layer electrode 214 is a ring-shaped solid structure and is made of metal. Lugs 215 are provided on the outer wall of the IV layer electrode 214.

[0037] In this design, the IV laminate 254 is a hollow ring structure. The inner ring wall of the IV laminate 254 is provided with a groove I 255. The III laminate 253 is provided with a fixing hole I 256 in the circumferential direction. The fixing hole I 256 is used to pass through the screw I 27 and fix the IV laminate 254 to the threaded blind hole 19 of the housing 1. After the IV layer electrode 214 is assembled with the IV laminate 254, the lug 215 enters the groove I 255. The IV laminate 254 is used to fix the IV layer electrode 214 inside the cavity I 11 of the housing 1.

[0038] In this design, the vent holes 236 of the insulating sleeve can be distributed in several directions around the circumference. The vent holes 236 are located on the side wall of the insulating sleeve and are axially continuous. The purpose of the vent holes 236 is to allow the flexible material sealing insulator 24 to release air when injected into the gaps between components inside cavity I11, thereby making the sealing insulator 24 more densely packed. The bottoms of insulating sleeves I231, II232, III233, and IV234 are all configured as pressure-applying parts 235. The cross-section of the pressure-applying part 235 can adopt an inverted pointed corner or trapezoidal structure, or it can adopt an outwardly convex arc-shaped surface structure. When the pressure-applying surface of the pressure-applying part 235 contacts the flexible material sealing insulator 24, it can apply pressure to the sealing insulator 24. Figure 3 Applying pressure in different directions at the lower end, as shown, allows for better sealing under pressure. Compared to a planar structure, when the upper surface of the electrical connector is under pressure, the convex structure of the pressure-applying part 235 compresses the sealing insulator 24, resulting in a tighter seal. The flow channel 217 serves to fill all gaps at once when filling the internal gaps of the housing 1 with the flexible sealing insulator 24, allowing the filling material on the inner and outer sides of the electrodes to flow through the flow channel 217 during the filling process.

[0039] In this design, after the electrode assembly 2 is assembled and installed in the cavity I11 of the housing 1, the upper end face of the electrical connector forms an outwardly convex arc-shaped structure. Since the connector in this design is used in a downhole environment, the arc-shaped structure allows for a tighter fit with the well wall. It should be noted that the end face of the housing 1 is not limited to an arc-shaped structure. During assembly, the housing 1, each electrode 21, each pin 22, each insulating body 23, each fixing plate 25, and the bottom insulating body 26 are assembled first. Then, the flexible sealing insulating body 24 is filled into all the internal gaps to form all the components into a whole. All components are made of high-temperature resistant materials, enabling the whole to withstand high temperatures. Through the internal structural design, it can withstand high pressure.

[0040] In this design, the pin 22 includes a single-core pressure-bearing pin 221 and a grounding pin 222. One end of the single-core pressure-bearing pin 221 is connected to each layer electrode 21, and the other end is designed as a pin. The single-core pressure-bearing pin 221 is installed in the through hole 14 of the partition 13 of the housing 1. One end of the grounding pin 222 is connected to the layer II electrode 212, and the other end is designed as a pin. The grounding pin 222 can be grounded by simultaneously conducting with the housing 1. If grounding is not required, the single-core pressure-bearing pin 221 can be used alone to conduct with the layer II electrode 212 without grounding. The pin 22 can be connected to the electrode 21 by a thread or other connection methods. For example, the lower end face of the electrode 21 is provided with a threaded hole, and the end of the pin 22 is provided with a threaded head that mates with the threaded hole to achieve a threaded connection. The outer circumferential surface of the pin 22 is designed with O-ring grooves and is equipped with O-rings to achieve a seal between it and the metal housing 1. The center of the single-core pressure-bearing pin 221 is a metal pin wrapped with an insulator. The whole piece is injection molded to achieve insulation between it and the metal housing 1.

[0041] This design also includes a bottom insulator 26, used to insulate each layer of electrodes 21 from the bottom of cavity I11. The bottom insulator 26 is adapted to the shape of the bottom of cavity I11 and is installed at the bottom of cavity I11 in the metal housing 1. The upper surface of the bottom insulator 26 is designed with multiple annular grooves II261 for placing each layer of electrodes. The central groove II261 is adapted to the structure of layer IV electrode 214. The bottom insulator 26 is also designed with a flow channel inlet (not shown in the figure), which corresponds to the flow channel inlet 18 of the partition 13, serving as a channel for injecting the flexible material sealing insulator 24 into the interior. The bottom insulator 26 is also provided with through holes. At the same time, the fixing plate 25 and screws press and fix the bottom insulator 26 to the bottom of cavity I11.

[0042] In this embodiment, the flexible sealing insulator 24 is injected through the injection port of the partition 13 of the metal housing 1 after the other components are installed. After injection, the internal cavity is filled with the sealing insulator 24. The sealing insulator 24 can be vulcanized rubber or other materials. The flexible insulator completes the insulation and pressure sealing between the electrodes 21. When there is external pressure, the flexible insulator will be compressed. After compression, it will be pressed between the components to achieve sealing.

[0043] In this solution, the electrical connector with the above structure meets the requirements of sealing, insulation and signal transmission in high temperature and high pressure environments. The shape of the electrode 21 on the top of the product is required to be nested in layers, and each layer of electrode 21 has a complete ring. Each ring of electrode 21 is led out from the bottom of the product using a pin. The electrical connector of this solution can be used for signal transmission in high temperature and high pressure environments.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A ring-shaped multilayer high-temperature pressure-bearing electrical connector, characterized in that: The device includes a housing (1), a cavity I (11) is provided on the first end face of the housing (1), the cavity I (11) is used to install the electrode assembly (2), a cavity II (12) is provided on the second end face of the housing (1), the first end face and the second end face are arranged opposite to each other, a partition (13) is provided between the cavity II (12) and the cavity I (11), the partition (13) is provided with a perforation (14), the cavity I (11) is filled with a flexible sealing insulator (24), the sealing insulator (24) is used to fill the gap between the components of the sealing electrode assembly (2), the electrode assembly (2) includes an electrode (21) and a pin (22), the tail end of the pin (22) is electrically connected to the electrode (21), the head end of the pin (22) passes through the perforation (14) and extends into the cavity II (12), the gap between the pin (22) and the perforation (14) is sealed by a sealing element (3).

2. The annular multilayer high-temperature pressure-bearing electrical connector according to claim 1, characterized in that: The electrodes (21) are arranged in multiple layers nested from the outside to the inside.

3. The annular multilayer high-temperature pressure-bearing electrical connector according to claim 2, characterized in that: The electrode (21) includes a central electrode (218) and an outer electrode (219) disposed outside the central electrode (218). The central electrode (218) is a solid ring structure, and the outer electrode (219) is a hollow ring structure.

4. The annular multilayer high-temperature pressure-bearing electrical connector according to claim 3, characterized in that: The end face of the peripheral electrode (219) is a circular ring, an elliptical ring, or a square ring.

5. A ring-shaped multilayer high-temperature pressure-bearing electrical connector according to claim 2, characterized in that: The electrode assembly (2) further includes a fixing plate (25), which is adapted to the shape of the adjacent electrode (21). The electrode (21) is directly fixed in the cavity I (11) or fixed in the cavity I (11) by the fixing plate (25).

6. A ring-shaped multilayer high-temperature pressure-bearing electrical connector according to claim 2, characterized in that: It also includes a bottom insulator (26), which is installed at the bottom of the cavity I (11) and fixedly connected to the housing (1). A groove II (261) is provided on the end face of the bottom insulator (26), and the groove II (261) is used to install the electrodes (21) of each layer respectively.

7. A ring-shaped multilayer high-temperature pressure-bearing electrical connector according to claim 6, characterized in that: The partition (13) and the bottom insulator (26) are respectively provided with flow channel injection ports (18) for injecting sealing insulator (24).

8. A ring-shaped multilayer high-temperature pressure-bearing electrical connector according to any one of claims 1-7, characterized in that: The electrode assembly (2) further includes an insulating body (23). Several electrodes (21) are provided. An insulating body (23) is provided between the housing (1) and the electrode assembly (2) and between each layer of electrodes (21). An insulating part (231) is provided at one end of the insulating body (23) facing the inside of the cavity I (11). The sealing insulating body (24) fills one side of the insulating body (23). The pressing part (231) of the insulating body (23) is in contact with the sealing insulating body (24).

9. A ring-shaped multilayer high-temperature pressure-bearing electrical connector according to claim 8, characterized in that: The pressurizing part (231) is a protruding structure facing the sealing insulator (24).

10. A ring-shaped multilayer high-temperature pressure-bearing electrical connector according to claim 8, characterized in that: The electrode (21) has a lug (211) on its side, and the fixing plate (25) has a groove I (255) that is adapted to the lug (211).

11. A ring-shaped multilayer high-temperature pressure-bearing electrical connector according to claim 8, characterized in that: The peripheral electrode (219) has a flow channel through hole (212) that penetrates the side wall.

12. A ring-shaped multilayer high-temperature pressure-bearing electrical connector according to claim 8, characterized in that: The insulating material (23) has a through-hole (232) formed on its side wall along its axial direction.

13. A ring-shaped multilayer high-temperature pressure-bearing electrical connector according to claim 8, characterized in that: The insulating material (23) has a raised rib (233) formed on its side wall, and the electrode (21) has an annular groove step (213) that cooperates with the raised rib (233) on its side. The annular groove step (213) of the electrode (21) restricts the insulating material (23) from coming out to the outside.

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