CN-121804218-B - Quick-connection structure of graphite electrode of high-temperature vacuum furnace

CN121804218BCN 121804218 BCN121804218 BCN 121804218BCN-121804218-B

Abstract

The invention relates to the technical field of quick connection of vacuum furnace electrodes, in particular to a quick connection structure of a graphite electrode of a high-temperature vacuum furnace, which comprises a copper bar, a furnace body electrode seat, a copper end connecting piece, a graphite end connecting piece and a graphite lock nut. According to the invention, a set of detachable copper end connecting piece and graphite end connecting piece are adopted to be respectively connected with a water-cooled copper electrode and a graphite special-shaped electrode, and the plane processing precision of the conductive end A of the copper end connecting piece and the plane processing precision of the conductive end B of the graphite end connecting piece are ensured, so that the copper end connecting piece is sufficiently attached and the conductive requirement is met. When the special-shaped electrode loss in the vacuum furnace needs to be replaced, the replacement operation is completed only by quick single-end disassembly in the vacuum furnace.

Inventors

QU SHAOFEN
BU HUAILI
GAO GUANGWEI
XIN YAN
BAO LEI
YANG JIANCHUAN
Duan Wenkuan

Assignees

沈阳恒进真空科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260309

Claims (5)

1. A quick connection structure of graphite electrodes of a high-temperature vacuum furnace is characterized in that the quick connection structure is used for connecting a water-cooled copper electrode (2) in the atmosphere with a graphite special-shaped electrode (10) in the vacuum furnace and conducting current, the quick connection structure comprises a copper bar (1), a furnace body electrode base (4), a copper end connecting piece (5), a graphite end connecting piece (8) and a graphite lock nut (9), the copper bar (1) is communicated with the graphite special-shaped electrode (10) from the inside, the graphite lock nut (9) is connected with the graphite special-shaped electrode (10), the furnace body electrode base (4) is arranged on the outer side of a heat preservation layer (11) of the vacuum furnace, one end of the water-cooled copper electrode (2) is fixed on the furnace body electrode base (4) through a fixing bolt (3), the copper bar (1) is connected with an external power supply, one end of the copper end connecting piece (5) is a closed conductive end A (51), the other end is a threaded end A (52), an internal threaded hole A (54) is formed in the conductive end A (51), a connecting hole A (53) is formed in the conductive end A (51), the other end of the water-cooled copper electrode (2) is connected with the threaded hole A (54) and the other end of the graphite end (8) is provided with a threaded hole B (82), the threaded end is formed in the conductive end (82) and the threaded end is connected with the graphite end (82) through the threaded end (82), the graphite special-shaped electrode (10) is in threaded connection with the internal threaded hole B (83), and the connecting hole B (82) is locked by the CFC bolt (6) and the CFC nut (7) after being aligned with the connecting hole A (53).
2. The quick connection structure of the graphite electrode of the high-temperature vacuum furnace, as set forth in claim 1, wherein the graphite special-shaped electrode (10) is in threaded connection with the graphite lock nut (9) before the graphite special-shaped electrode (10) is in threaded connection with the internal threaded hole B (83).
3. The quick-connection structure of the graphite electrode of the high-temperature vacuum furnace according to claim 1, wherein the conducting end A (51) of the copper end connecting piece (5) and the conducting end B (81) of the graphite end connecting piece (8) are provided with air holes (12).
4. The graphite electrode quick-connection structure of the high-temperature vacuum furnace of claim 1, wherein the furnace body electrode seat (4) is provided with a mounting hole, the connecting structure at one end of the water-cooled copper electrode (2) is provided with a mounting hole, and the furnace body electrode seat (4) is locked with the mounting hole on the connecting structure through a fixing bolt (3) and a nut after being aligned.
5. The quick graphite electrode connection structure of the high-temperature vacuum furnace, as set forth in claim 1, wherein the plane processing precision of the conductive end A (51) of the copper end connecting piece (5) and the plane processing precision of the conductive end B (81) of the graphite end connecting piece (8) are guaranteed, and the bonding and the conduction requirements are met.

Description

Quick-connection structure of graphite electrode of high-temperature vacuum furnace Technical Field The invention relates to the technical field of quick connection of vacuum furnace electrodes, in particular to a quick connection structure of a graphite electrode of a high-temperature vacuum furnace. Background The temperature of the traditional high-temperature vacuum furnace equipment can reach 2000 ℃, and the graphite special-shaped electrode is directly connected with the water-cooled copper electrode on the furnace body through threads. When the graphite special-shaped electrode is used for a period of time, loss or fault conditions can occur, and the graphite special-shaped electrode needs to be disassembled, assembled and replaced. However, because the graphite special-shaped electrode cannot rotate due to special shape, the flange and the copper bar of the external water-cooled electrode have to be disassembled and then rotated, and the operation is needed to be carried out outside the vacuum furnace simultaneously, so that the difficulty and the labor intensity are high. Disclosure of Invention In order to solve the technical problems, the invention provides a quick graphite electrode connecting structure of a high-temperature vacuum furnace. The specific technical scheme is as follows: A quick connection structure of graphite electrodes of a high-temperature vacuum furnace is used for connecting a water-cooled copper electrode in the atmosphere with a graphite special-shaped electrode in the vacuum furnace and conducting current, the quick connection structure comprises a copper bar, a furnace body electrode seat, a copper end connecting piece, a graphite end connecting piece and a graphite lock nut, the copper bar is communicated with the graphite special-shaped electrode from the inside, the furnace body electrode seat is arranged on the outer side of an insulating layer of the vacuum furnace, one end of the water-cooled copper electrode is fixed on the furnace body electrode seat through a fixing bolt and connected with an external power supply, one end of the copper end connecting piece is a closed conductive end A, the other end of the copper end connecting piece is a threaded end A, an internal threaded hole A is formed in the threaded end A, a connecting hole A is formed in the conductive end A, the other end of the water-cooled copper electrode is in threaded connection with the internal threaded hole A, a thread is formed in the other end of the graphite end connecting piece, the graphite special-shaped electrode is in threaded connection with the internal threaded hole B, and the connecting hole B is aligned with the connecting hole A, and the CFC bolt and the CFC lock nut are used. Before the graphite special-shaped electrode is in threaded connection with the internal threaded hole B, the graphite special-shaped electrode is in threaded connection with the graphite lock nut. And the conducting end A of the copper end connecting piece and the conducting end B of the graphite end connecting piece are provided with air holes. The furnace body electrode holder is provided with a mounting hole, a connecting structure at one end of the water-cooled copper electrode is provided with a mounting hole, and the furnace body electrode holder is locked with the mounting hole on the connecting structure through a fixing bolt and a nut after being aligned. The plane processing of the conductive end A of the copper end connecting piece and the plane processing of the conductive end B of the graphite end connecting piece are precise, so that the copper end connecting piece is guaranteed to be sufficiently attached and the conductive requirement is met. Compared with the prior art, the invention has the following beneficial technical effects: According to the invention, a set of detachable copper end connecting piece and graphite end connecting piece are adopted to be respectively connected with a water-cooled copper electrode and a graphite special-shaped electrode, and the plane processing precision of the conductive end A of the copper end connecting piece and the plane processing precision of the conductive end B of the graphite end connecting piece are ensured, so that the copper end connecting piece is sufficiently attached and the conductive requirement is met. When the special-shaped electrode loss in the vacuum furnace needs to be replaced, the special-shaped electrode can be quickly disassembled to complete replacement. When the graphite special-shaped electrode is required to be disassembled, assembled and replaced, the copper bar and the water-cooled copper electrode at the atmosphere end are not required to be changed, and the copper bar and the water-cooled copper electrode are only required to be operated in a single end in the vacuum furnace, so that the structure is reliable, the operation is convenient, and the copper bar and the water-cooled copper electrode are successfully applied