Ceramic type high-temperature-resistant electrical penetration joint

Abstract

The utility model relates to the technical field of electrical connectors, in particular to a ceramic type high-temperature-resistant electrical penetration connector, which is characterized in that the stack outer side of a shell is connected with the stack outer side of a ceramic component through a U-shaped ring I in a brazing manner, and the stack inner side of the ceramic component is connected with the stack inner side of a copper conductor through a U-shaped ring II in a brazing manner; the inner side of a pile of the copper conductor is matched and tightly attached to the stepped structure of the portion, with the wide inside and the narrow outside, of the ceramic component through the shaft shoulder structure, and the stepped structure of the ceramic component is matched and tightly attached to the stepped structure of the shell. The problems of material deformation caused by high temperature, unstable connection caused by reactor inner side pressure and the like are effectively avoided, and the whole structure is high in insulating performance and sealing performance under the high-temperature working condition, high in pressure bearing capacity, simple and stable in structure and easy to wire, install and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical joint technical field, concretely is a kind of ceramic type high-temperature-resistant electrical penetration joint. BACKGROUND

[0002] The main function of electrical penetration joint is to ensure the electrical continuity and sealing of electrical conductor, and the main function is to ensure the electrical continuity and sealing of electrical conductor penetrating the containment vessel.

[0003] In some specific applications, for example, in the process of directly converting heat energy into electricity by nuclear reaction using thermionic fuel elements, the electrical penetration joint serves as a connecting component, on the one hand, it needs to conduct the current generated by the thermionic fuel element to the outside of the reactor and connect it with the cable, on the other hand, as a part of the helium chamber pressure boundary of the reactor core system, it needs to ensure the sealing function of the helium chamber, at this time, the maximum working temperature of the electrical penetration joint can reach 600℃, and under such high temperature conditions of the reactor, the conventional electrical penetration joint will have performance instability, easy leakage and other use limitations.

[0004] Based on the above reasons, the utility model designs a ceramic type high-temperature-resistant electrical penetration joint, which fully considers the deformation caused by the expansion of the material in high temperature environment, and improves the structure of the connecting component, which has excellent insulation performance, good sealing performance, high pressure resistance and stable structure. SUMMARY

[0005] The utility model discloses a ceramic type high-temperature-resistant electrical penetration joint, which fully considers the deformation caused by the expansion of the material in high temperature environment, and improves the structure of the connecting component, which has excellent insulation performance, good sealing performance, high pressure resistance and stable structure.

[0006] In order to achieve the above purpose, the utility model provides a ceramic type high-temperature-resistant electrical penetration joint, the outside of the shell is connected with the outside of the ceramic component through the brazing of U-shaped ring one, the inside of the ceramic component is connected with the inside of the copper conductor through the brazing of U-shaped ring two, the inside of the copper conductor is tightly fitted with the stepped structure of the inside wide and outside narrow part of the ceramic component through the shaft shoulder structure, and the stepped structure of the ceramic component is tightly fitted with the stepped structure of the shell.

[0007] In addition to the brazing connection part of U-shaped ring one, a gap is reserved between the shell and the ceramic component.

[0008] In addition to the brazing connection part of U-shaped ring two, a gap is reserved between the ceramic component and the copper conductor.

[0009] U-shaped ring one and U-shaped ring two are Kovar rings.

[0010] The ceramic part is an integrated structure of special shape.

[0011] The outer side of the shell is an L-shaped structure.

[0012] The in-pile side terminal of the copper conductor is connected with the in-pile cable through a single bolt.

[0013] The out-pile side terminal of the copper conductor is connected with the out-pile cable through double bolts.

[0014] The out-pile side terminal of the copper conductor is connected with two out-pile cables.

[0015] The outer side of the shell is provided with a stainless steel matching part for field matching connection.

[0016] Compared with the prior art, the U-shaped Kovar ring structure is used on the in-pile and out-pile sides to connect the ceramic part and the shell and the copper conductor, so that the axial and radial deformation problems caused by the inconsistent expansion coefficients of different materials under high temperature environment can be effectively resisted. Meanwhile, the axial shoulder structure of the copper conductor and the stepped structure of the ceramic part are matched, so that the pressure on the in-pile side can be effectively resisted. The ceramic part is integrally formed, so that the insulation performance is greatly improved compared with the segmented structure in the prior art. In addition, since the shell adopts an L-shaped structure, the influence of welding heat is reduced, and the copper conductor is a continuous structure, so that the direct resistance of the conductor is reduced, and the stable passing of the current is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic view of the utility model.

[0018] Fig. 2 It is a sectional view of the utility model.

[0019] Mark explanation:

[0020] 1 is a matching part, 2 is a shell, 3 is a ceramic part, 4 is a copper conductor, 5 is a U-shaped ring one, 6 is a U-shaped ring two, and 7 is an axial shoulder structure. DETAILED DESCRIPTION

[0021] The utility model will be further described in combination with the drawings.

[0022] Reference Figs. 1-2 The utility model provides a kind of ceramic type high temperature resistant electrical penetration joint, the out-pile side of shell 2 is connected with the out-pile side of ceramic part 3 by U-shaped ring one 5 brazing, the in-pile side of ceramic part 3 is connected with the in-pile side of copper conductor 4 by U-shaped ring two 6 brazing, the in-pile side of copper conductor 4 is cooperated with the stepped structure of the inner wide outer narrow place of ceramic part 3 by axial shoulder structure 7 and is tightly attached, and the stepped structure of ceramic part 3 and the stepped structure of shell 2 are mutually cooperated and are tightly attached.

[0023] A gap is kept between the shell 2 and the ceramic part 3 except for the brazing connection part of the U-shaped ring one 5.

[0024] A gap is kept between the ceramic part 3 and the copper conductor 4 except for the brazing connection part of the U-shaped ring two 6.

[0025] The U-shaped ring one 5 and the U-shaped ring two 6 are Kovar rings.

[0026] The ceramic part 3 is an irregularly shaped integrally formed structure.

[0027] The shell 2 is of an L-shaped structure at the out-of-pile side.

[0028] The in-pile side terminal of the copper conductor 4 is connected to the in-pile cable through a single bolt.

[0029] The out-of-pile side terminal of the copper conductor 4 is connected to the out-of-pile cable through double bolts.

[0030] The out-of-pile side terminal of the copper conductor 4 is connected to two out-of-pile cables.

[0031] A stainless steel fitting part 1 is arranged on the outside of the shell 2 for field matching connection.

[0032] Working principle:

[0033] The utility model does not need too much debugging in use, wherein the electrical penetration joints are divided into in-pile and out-of-pile sides (the left side in the drawing is the in-pile side, and the right side is the out-of-pile side), the in-pile side is a high-temperature helium environment, and the out-of-pile side is a vacuum.

[0034] The in-pile cable is connected to the terminal of the copper conductor 4 in-pile side, and a single bolt is used for connection, and the out-of-pile cable is connected to the terminal of the copper conductor 4 out-of-pile side, and double bolts are used for connection, wherein the out-of-pile side terminal can be connected to two cables.

[0035] The copper conductor 4 is designed with a shoulder structure 7 close to the in-pile side, which is matched with the ceramic part 3 and the stainless steel shell 2 and is used for bearing the outward pressure of the in-pile side. Fig. 2 As shown in the drawing, the copper conductor 4 and the ceramic part 3 are connected through the U-shaped Kovar ring 6, and a moderate gap is kept between the copper conductor 4 and the ceramic part 3 except for the brazing part. The ceramic part 3 and the stainless steel shell 2 are connected through the U-shaped Kovar ring 5, and a moderate gap is kept between the ceramic part 3 and the stainless steel shell 2 except for the brazing part.

[0036] The above are only preferred embodiments of the present application, and are used to help understand the method and its core idea of the present application.

[0037] In the description of the present application, it should be pointed out that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] The present application solves the problems of high temperature resistance and sealing of the electrical penetration joint in the process of directly converting heat energy into electric energy by the thermal ion fuel element through nuclear reaction, adopts high temperature resistant ceramic parts, cooperates with U-shaped Kovar ring and shaft shoulder design, effectively avoids material deformation caused by high temperature, unstable connection caused by in-core side pressure and other problems, and has high insulation performance, sealing performance and pressure bearing capacity under high temperature working condition, simple and stable structure, and easy wiring installation and maintenance.

Claims

1. A ceramic type high temperature resistant electrical feedthrough, characterized in that, The outer side of the shell (2) is connected with the outer side of the ceramic component (3) by brazing connection of U-shaped ring one (5), the inner side of the ceramic component (3) is connected with the inner side of the copper conductor (4) by brazing connection of U-shaped ring two (6), the inner side of the copper conductor (4) is tightly attached with the step structure of the inner wide and outer narrow of the ceramic component (3) by the shaft shoulder structure (7), and the step structure of the ceramic component (3) is tightly attached with the step structure of the shell (2).

2. The ceramic type high temperature resistant electrical feedthrough according to claim 1, characterized in that, A gap is reserved between the shell (2) and the ceramic component (3) except the brazing connection part of U-shaped ring one (5).

3. The ceramic type high temperature resistant electrical feedthrough according to claim 1, wherein, A gap is reserved between the ceramic component (3) and the copper conductor (4) except the brazing connection part of U-shaped ring two (6).

4. The ceramic type high temperature resistant electrical feedthrough according to claim 1, wherein, The U-shaped ring one (5) and the U-shaped ring two (6) are Kovar rings.

5. The ceramic type high temperature resistant electrical feedthrough according to claim 1, wherein, The ceramic component (3) is a special-shaped integrally formed structure.

6. The ceramic type high temperature resistant electrical feedthrough according to claim 1, wherein, The outer side of the shell (2) is an L-shaped structure.

7. The ceramic type high temperature resistant electrical feedthrough according to claim 1, wherein, The wiring terminal of the inner side of the copper conductor (4) is connected with the inner cable by a single bolt.

8. The ceramic type high temperature resistant electrical feedthrough according to claim 1, wherein, The wiring terminal of the outer side of the copper conductor (4) is connected with the outer cable by double bolts.

9. The ceramic type high temperature resistant electrical feedthrough according to claim 8, characterized in that, The wiring terminal of the outer side of the copper conductor (4) is connected with two outer cables.

10. The ceramic type high temperature resistant electrical feedthrough according to claim 1, wherein, A stainless steel matching component (1) is arranged on the outer side of the shell (2) for on-site matching connection.

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