Sealing structure of wiring terminal of high-voltage electrical equipment

Abstract

The utility model discloses a sealing structure of a wiring terminal of high-voltage electrical equipment, which is characterized in that sealing corrugated pipes cover the outer sides of the wire inlet end and the wire outlet end of the high-voltage electrical equipment, and the wiring terminal of the high-voltage electrical equipment is completely sealed in the corrugated pipes, so that abnormal operation of a circuit caused by environmental influence on a conductor is avoided; the sealing corrugated pipe comprises a horizontal part matched with the cable in an attached mode and a corrugated telescopic part used for sealing, fixing parts used for fixing the corrugated telescopic part are further arranged at the wiring terminals of the wire inlet end and the wire outlet end, and circular limiting protrusions are further arranged on the fixing parts, so that the corrugated pipe is convenient to fix, and sealing is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a sealing structure of a high-voltage electrical equipment terminal. Background Art

[0002] In the field of motors, it is often encountered that the wiring terminals are led out from the inside of the motor. However, when the wiring terminals need to be led out from a high-voltage sealed container, the existing wiring terminal structure cannot ensure the high-voltage sealing and insulation effects.

[0003] The existing high-voltage electrical equipment terminals are not sealed but only covered with sheaths, which cannot block the entry of rainwater and dust, thus causing corrosion of the conductors and poor contact.

[0004] The utility model with announcement number CN215680997U discloses a novel high-voltage sealed terminal structure, and the key points of its technical solution include a high-pressure container wall, an insulating bushing, a terminal, an internal cable, and an external cable; the insulating bushing cooperates with the mounting hole along the high-pressure container from the inside to the outside; the terminal is isolated from the wall of the high-pressure container; the tail of the terminal extends to the outside of the high-pressure container, and the head of the terminal cooperates with the insulating bushing in the direction from the inside to the outside of the high-pressure container; the insulating bushing is filled with sealant at the connection between the internal cable and the terminal; the external cable is insulated and isolated from the wall of the high-pressure container by a sealant; the part of the terminal extending out of the sealant is threadedly connected to a first nut, and the first nut is tightened to press the insulating bushing into the mounting hole through the head of the terminal. Although its sealing effect and insulation effect are reliable, the overall sealing can be further improved. Summary of the invention

[0005] The object of the present invention is to provide a sealing structure for a high-voltage electrical equipment terminal in view of the above-mentioned deficiencies in the prior art, so as to ensure the high-voltage sealing of the terminal when the high-voltage electrical equipment leads the terminal outward.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A sealing structure for a high-voltage electrical equipment terminal comprises a sealing bellows which is arranged outside the inlet and outlet terminals of the high-voltage electrical equipment;

[0008] The sealing bellows comprises a horizontal part which is fitted with the cable and a bellows expansion part for sealing, and the wiring terminals at the inlet and outlet ends are also provided with a fixing part for fixing the bellows expansion part, and the bellows expansion part is sealed and connected to the fixing part;

[0009] One end of the cable lug is connected to the cable, and the other end is detachably connected to the wiring terminal and both are arranged in the corrugated expansion part.

[0010] The corrugated expansion part and the fixing part adopt interference fit.

[0011] The corrugated expansion part is an elastic member.

[0012] The fixing portion is configured as a circular structure, and a limiting protrusion is disposed on the outer end surface thereof.

[0013] The corrugated expansion parts are arranged with unequal diameters along the axial direction.

[0014] The fixing part is an insulating member.

[0015] The limiting protrusion is set as a circular limiting protrusion.

[0016] The beneficial effects of the present invention are:

[0017] (1) The sealing structure of the high-voltage electrical equipment terminal is to seal all the high-voltage electrical equipment terminal connections in the bellows by covering the outside of the high-voltage electrical equipment inlet and outlet terminals with sealing bellows, thereby preventing the conductor from being affected by the environment and causing abnormal operation of the circuit. The sealing bellows includes a horizontal portion that fits the cable and a bellows expansion portion for sealing. The inlet and outlet terminals are also provided with a fixing portion for fixing the bellows expansion portion. The fixing portion is also provided with a circular limiting protrusion, which is convenient for fixing the bellows and sealing.

[0018] (2) The bellows expansion part of the sealing bellows is an elastic part, which is tightly wrapped around the cable and the fixed part through elastic deformation. The bellows adopts an unequal diameter design in the axial direction to increase the accommodation space while taking into account practicality and aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is the overall assembly diagram of the present invention;

[0021] Figure 3 yes Figure 2 A partial cross-sectional view of . DETAILED DESCRIPTION

[0022] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0023] The present invention provides a sealing structure for a high voltage electrical equipment terminal, such as Figures 1 to 3 shown.

[0024] A sealing structure for a high-voltage electrical equipment terminal includes a sealing bellows 3 that is covered on the outside of the inlet and outlet ends of the high-voltage electrical equipment 6; the sealing bellows 3 includes a horizontal portion that fits the cable 1 and a bellows expansion portion for sealing, and the inlet and outlet terminals 4 are also provided with a fixing portion 5 for fixing the bellows expansion portion, and the bellows expansion portion is sealed and connected to the fixing portion 5; and one end of the cable nose 2 is connected to the cable 1, and the other end is detachably connected to the terminal 4 and both are arranged in the bellows expansion portion. In this embodiment, the fixing portion 5 is an insulating part, and the fixing portion 5 is set as a circular structure, and a limiting protrusion is also provided on its outer end surface. Preferably, the limiting protrusion is set as a circular limiting protrusion, which is convenient for fixing the bellows and sealing.

[0025] Preferably, the bellows expansion part and the fixed part 5 adopt an interference fit, and the bellows expansion part is an elastic part, which is tightly sleeved on the cable 1 and the fixed part 5 through elastic deformation, and the circular limiting protrusion on the fixed part 5 can prevent the sealing bellows from falling off, thereby improving the limiting effect. In addition, the bellows expansion part is arranged with unequal diameters along the axial direction, which increases the accommodation space and takes into account both practicality and aesthetics.

[0026] The sealing structure, by covering the outside of the high-voltage electrical equipment 6 with a sealing bellows 3 at the inlet terminal 61 and the outlet terminal 62, seals all the high-voltage electrical equipment terminals in the bellows to avoid abnormal circuit operation caused by the conductor being affected by the environment.

[0027] If the words "first", "second" and the like are used in this patent to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description, and the above words have no special meaning.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the invention claimed for protection. The scope of protection claimed for the present invention is defined by the attached claims and their equivalents.

[0029] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "left", "right", "center", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

Claims

1. A sealing structure for a high-voltage electrical equipment terminal, characterized in that: It includes a sealing bellows which is arranged outside the inlet and outlet terminals of the high-voltage electrical equipment; The sealing bellows comprises a horizontal part which is fitted with the cable and a bellows expansion part for sealing, and the wiring terminals at the inlet and outlet ends are also provided with a fixing part for fixing the bellows expansion part, and the bellows expansion part is sealed and connected to the fixing part; One end of the cable lug is connected to the cable, and the other end is detachably connected to the wiring terminal and both are arranged in the corrugated expansion part.

2. The sealing structure of a high-voltage electrical equipment terminal according to claim 1, characterized in that: The corrugated expansion part and the fixing part adopt interference fit.

3. The sealing structure of a high-voltage electrical equipment terminal according to claim 1, characterized in that: The corrugated expansion part is an elastic member.

4. A sealing structure for a high-voltage electrical equipment terminal according to any one of claims 1 to 3, characterized in that: The fixing portion is configured as a circular structure, and a limiting protrusion is disposed on the outer end surface thereof.

5. The sealing structure of a high-voltage electrical equipment terminal according to claim 4, characterized in that: The corrugated expansion parts are arranged with unequal diameters along the axial direction.

6. The sealing structure of a high-voltage electrical equipment terminal according to claim 4, characterized in that: The fixing part is an insulating member.

7. The sealing structure of a high-voltage electrical equipment terminal according to claim 4, characterized in that: The limiting protrusion is set as a circular limiting protrusion.

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