Rotary diode enamel pipe cap

Abstract

The utility model discloses a rotary diode enamel pipe cap which comprises a cap wall, a conductive pipe is coaxially arranged on the cap wall and extends into the pipe cap, a transition copper sleeve is fixedly connected to the periphery of the lower portion of the conductive pipe, an annular step is arranged on the periphery of the bottom end of the transition copper sleeve, and an enamel cap top is arranged between the transition copper sleeve and the cap wall. The outer wall of the enamel cap top is fixedly connected with the inner side of the cap wall, the inner wall of the enamel cap top is fixedly connected with the peripheral face of the transition copper sleeve, and an inner ring at the bottom end of the enamel cap top is fixedly connected with the step face of the annular step. By using the pipe cap, the structural strength of the pipe cap is further enhanced, the enamel cap top is prevented from being damaged by stress, and the use reliability of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor devices, in particular to a rotating diode enamel tube cap. Background Art

[0002] Rotating diodes are suitable for excitation of generator rotors. The biggest difference from static diodes is that rotating diodes are used in high-speed rotation, and the maximum speed can reach 3000 rpm, so higher structural strength requirements are placed on the diodes.

[0003] The conductive tube used for diode conduction is generally made of copper. In the production process of diode, the conductive tube must be connected to the copper lead of the diode chip. The conductive tube and the copper lead of the diode chip are cold pressed in a mold to form a low resistance to complete a reliable connection. During the cold pressing process, the stress generated will act on the porcelain insulator, which is easy to crack. During the cold pressing process, the porcelain insulator will have the risk of breaking. Once the porcelain insulator is damaged, there is a risk of the porcelain insulator being thrown out during the subsequent high-speed rotation of the generator.

[0004] Therefore, it is necessary to provide a rotating diode enamel tube cap to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a rotating diode enamel tube cap to address the deficiencies in the prior art, thereby ensuring that stress is not transmitted to the enamel cap top during cold pressing, so that the enamel cap top will not be damaged.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A rotating diode enamel tube cap, the tube cap comprises a cap wall, a conductive tube is coaxially arranged on the cap wall, the conductive tube extends to the inside of the tube cap, a transition copper sleeve is fixedly connected to the outer periphery of the lower part of the conductive tube, an annular step is provided on the outer periphery of the bottom end of the transition copper sleeve, an enamel cap top is provided between the transition copper sleeve and the cap wall, the outer wall of the enamel cap top is fixedly connected to the inner side of the cap wall, the inner wall of the enamel cap top is fixedly connected to the outer peripheral surface of the transition copper sleeve, and the inner ring of the bottom end of the enamel cap top is fixedly connected to the step surface of the annular step.

[0008] Preferably, a burr is provided at the bottom end of the cap wall.

[0009] Preferably, the cap wall is a calenderable shell of an iron-cobalt-nickel alloy.

[0010] Preferably, the conductive tube and the transition copper sleeve are fixed by welding.

[0011] Preferably, the enamel cap top is sintered and fixed to the cap wall and the transition copper sleeve respectively.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] A transition copper sleeve is fixed by welding on the outer periphery of the bottom end of the conductive tube to avoid direct contact between the conductive tube and the top of the enamel cap. When the conductive tube and the copper leads of the diode chip are cold pressed, the stress generated acts on the transition copper sleeve. An annular step is provided at the bottom end of the transition copper sleeve, which not only enhances the protection effect on the top of the enamel cap, but also supports the top of the enamel cap, thereby further strengthening the structural strength of the tube cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0015] Among them, 1-cap wall, 2-conductive tube, 3-transition copper sleeve, 4-enamel cap top DETAILED DESCRIPTION

[0016] The present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0017] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixed connection" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0018] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", "top", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0019] like Figure 1As shown, a rotating diode enamel tube cap comprises a cap wall 1, the cap wall is a varable shell of an iron-cobalt-nickel alloy, a conductive tube 2 is coaxially arranged on the cap wall, the conductive tube extends to the inside of the cap, a transition copper sleeve 3 is fixed to the outer periphery of the lower part of the conductive tube by high-temperature solder welding, an annular step is provided on the outer periphery of the bottom end of the transition copper sleeve, an enamel cap top 4 is sintered between the transition copper sleeve and the cap wall, the outer wall of the enamel cap top is sintered and fixed to the inner side of the cap wall, the inner wall of the enamel cap top is sintered and fixed to the outer peripheral surface of the transition copper sleeve, the inner ring of the bottom end of the enamel cap top is sintered and fixed to the step surface of the annular step, and the bottom end of the cap wall is provided with a flash edge bent outward.

[0020] The principle and use method of a rotating diode enamel tube cap: a transition copper sleeve is welded and fixed on the outer periphery of the bottom end of a conductive tube to avoid direct contact between the conductive tube and the top of the enamel cap. When the conductive tube and the copper leads of the diode chip are cold pressed, the stress generated acts on the transition copper sleeve. An annular step is provided at the bottom end of the transition copper sleeve. The annular step wraps the inner circle of the bottom end of the enamel cap top, which not only enhances the protection effect on the enamel cap top, but also supports the enamel cap top, further strengthening the structural strength of the tube cap.

[0021] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A rotating diode enamel cap, characterized in that: The pipe cap includes a cap wall, on which a conductive tube is coaxially arranged, the conductive tube extends to the inside of the pipe cap, a transition copper sleeve is fixedly connected to the outer periphery of the lower part of the conductive tube, an annular step is provided on the outer periphery of the bottom end of the transition copper sleeve, an enamel cap top is provided between the transition copper sleeve and the cap wall, the outer wall of the enamel cap top is fixedly connected to the inner side of the cap wall, the inner wall of the enamel cap top is fixedly connected to the outer peripheral surface of the transition copper sleeve, and the inner ring of the bottom end of the enamel cap top is fixedly connected to the step surface of the annular step.

2. The rotating diode enamel cap according to claim 1, characterized in that: The bottom end of the cap wall is provided with a flash edge.

3. The rotating diode enamel cap according to claim 1, characterized in that: The cap wall is a calenderable shell of an iron-cobalt-nickel alloy.

4. The rotating diode enamel cap according to claim 1, characterized in that: The conductive tube and the transition copper sleeve are fixed by welding.

5. The rotating diode enamel cap according to claim 1, characterized in that: The enamel cap top is sintered and fixed to the cap wall and the transition copper sleeve respectively.

Images