High-voltage equipment fastener protection device

Abstract

The utility model discloses a high-voltage equipment fastener protection device, which plays a role in simultaneously protecting a main stud thread part and a main nut which are exposed outside, and comprises a protection cover, the height of the protection cover is greater than that of a fastener exposed outside an equipment main body, and the height of the protection cover is greater than that of the fastener exposed outside the equipment main body. The width of the protective cover is larger than the maximum width of the fastener exposed out of the device body, and a threaded ring matched with the fastener is arranged in the middle of the protective cover. Compared with the prior art, damage of the external environment to the threads is reduced, the use performance of the fastener is guaranteed, the requirements for disassembling and pre-tightening the fastener within the service life of equipment are met, the replacement frequency of the fastener is reduced, the production cost is reduced, and the labor efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners for high-voltage equipment, and particularly relates to a fastener protection device for high-voltage equipment. Background Art

[0002] In chemical production, many core equipment are high-temperature and high-pressure working equipment. Such equipment usually adopts high-pressure sealing structure, such as lens pad seal, diaphragm pad seal, double cone seal, etc. High-pressure sealing structure usually adopts fasteners with larger diameters such as M48-M140 to ensure the sealing performance of the sealing structure. In chemical production areas, the atmospheric environment is complex, especially in coastal areas, where environmental corrosion is more serious. If the fasteners are exposed to the air, the threads are easily corroded and damaged, affecting the performance of the fasteners, making it difficult to disassemble the fasteners, and even affecting the sealing performance of the equipment, leading to safety accidents. Therefore, it is necessary to set up protective devices for high-pressure fasteners to prevent the use environment from damaging the fasteners and affecting the performance of the equipment. At present, the commonly used protective device structure is to process a smaller screw hole at the top of the main stud, and use a smaller bolt to tighten the protective cover to support the main nut. This structure only protects part of the thread of the main stud, but cannot protect the main nut, and the bolt preload is small. If the bolt expands and contracts, it is easy to cause a gap between the protective cover and the main nut, and part of the thread of the main stud will still be corroded. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a high-voltage equipment fastener protection device, which protects the exposed main stud threaded portion and the main nut at the same time, reduces the damage to the main nut and the main stud caused by the working environment, and ensures the performance of the fastener.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A fastener protection device for high-voltage equipment includes a protective cover, wherein the height of the protective cover is greater than the height of the fastener exposed outside the equipment body, the width of the protective cover is greater than the maximum width of the fastener exposed outside the equipment body, and a threaded ring matching the fastener is provided in the middle of the protective cover.

[0006] When using, first pre-tighten the main nut and main stud with a special tightening device, and then tighten the protective cover so that the bottom of the protective cover is against the equipment body. In this way, the protective cover can simultaneously protect and seal the exposed main stud thread part and the main nut, protecting the thread from external environmental factors.

[0007] Further preferably, the protective cover also includes a cover plate, a stud circumferential surface, and a nut circumferential surface, the cover plate is fixed on the upper side of the stud circumferential surface in the vertical direction, and the vertical nut circumferential surface is fixed on the lower side, and the threaded ring is arranged inside the stud circumferential surface or inside the nut circumferential surface or between the stud circumferential surface and the nut circumferential surface.

[0008] Further preferably, for the case where the threaded ring is between the circumferential surface of the stud and the circumferential surface of the nut, the diameter of the circumferential surface of the stud is smaller than the circumferential surface of the nut, the diameter of the circumferential surface of the stud is larger than the diameter of the fastener stud, and the circumferential surface of the nut is larger than the diameter of the fastener nut.

[0009] Further preferably, two radial pin holes are symmetrically arranged on the outer edge of the threaded ring. When used, round steel can be inserted into the pin holes to assist in rotating the protective cover to complete the removal or pre-tightening of the protective cover.

[0010] Compared with the existing device, the utility model has the following technical effects: the threaded ring matches the main stud thread, and the bolt preload force is greater than that of the existing device. The device has a simple structure, can effectively protect the main stud and main nut parts of the high-voltage equipment exposed to the outside, reduce the damage to the thread by the external environment, ensure the performance of the fastener, meet the requirements of fastener disassembly and preload within the service life of the equipment, reduce the replacement frequency of the fastener, reduce production costs, and improve labor efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 The utility model is represented by a front section structure schematic diagram.

[0014] Figure 2 An enlarged view of the threaded ring of the utility model is shown.

[0015] Figure 3 Shows a top view of the threaded ring of the utility model.

[0016] Figure 4 The utility model is shown in the schematic diagram.

[0017] In the figure: 1-protective cover, 2-main stud, 3-main nut, 4-cover plate, 5-circumferential surface of stud, 6-thread ring, 7-circumferential surface of nut. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0019] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] The specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0022] A fastener protection device for high-voltage equipment includes a protective cover 1, the height of the protective cover 1 is greater than the height of the fastener exposed outside the equipment body, the width of the protective cover 1 is greater than the maximum width of the fastener exposed outside the equipment body, and a threaded ring 6 matching the fastener is provided in the middle of the protective cover 1.

[0023] The protective cover 1 also includes a cover plate 4, a stud circumferential surface 5, and a nut circumferential surface 7. The cover plate 4 is fixed on the upper side of the stud circumferential surface 5 in the vertical direction, and the vertical nut circumferential surface 7 is fixed on the lower side. The threaded ring 6 is arranged inside the stud circumferential surface 5 or inside the nut circumferential surface 7 or between the stud circumferential surface 5 and the nut circumferential surface 7.

[0024] Preferably, the threaded ring 6 is arranged between the stud circumferential surface 5 and the nut circumferential surface 7, and the outer diameter of the threaded ring 6 is equal to the nut circumferential surface 7. The diameter of the stud circumferential surface 5 is smaller than the nut circumferential surface 7, the diameter of the stud circumferential surface 5 is larger than the fastener stud diameter, and the nut circumferential surface 7 is larger than the fastener nut diameter.

[0025] In this embodiment, the maximum width of the fastener exposed outside the device body is the outer diameter of the main nut 3, the diameter of the stud circumferential surface 5 of the protective cover 1 is 6-10mm larger than the diameter of the threaded part of the main stud 2, and the nut circumferential surface 7 of the protective cover 1 is 6-10mm larger than the outer diameter of the main nut 3.

[0026] Two radial pin holes are symmetrically arranged on the outer edge of the threaded ring 6. In this embodiment, two Φ12 pin holes are arranged on the outer edge of the threaded ring 6.

[0027] When in use, first pre-tighten the main nut 3 and the main stud 2 with a special tightening device, and then tighten the protective cover 1. Round steel can be inserted into the pin hole to assist in rotating the protective cover 1 to complete the pre-tightening of the protective cover 1 so that the bottom of the nut circumferential surface 7 is against the equipment body. In this way, the protective cover 1 protects and seals the exposed threaded part of the main stud 2 and the main nut 3 at the same time, protecting the thread from being affected by external environmental factors.

[0028] The above is only a specific implementation of the utility model, which enables those skilled in the art to understand or implement the utility model. Although detailed descriptions are given with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A fastener protection device for high-voltage equipment, characterized in that: The protective cover (1) comprises a height greater than a height of a fastener exposed outside a device body, a width greater than a maximum width of the fastener exposed outside a device body, and a threaded ring (6) matching the fastener is provided in the middle of the protective cover (1).

2. The fastener protection device for high-voltage equipment according to claim 1, characterized in that: The protective cover further comprises a cover plate (4), a stud circumferential surface (5), and a nut circumferential surface (7); the cover plate (4) is fixed to the upper side of the stud circumferential surface (5) in the vertical direction, and the vertical nut circumferential surface (7) is fixed to the lower side; the threaded ring (6) is arranged inside the stud circumferential surface (5) or inside the nut circumferential surface (7) or between the stud circumferential surface (5) and the nut circumferential surface (7).

3. The fastener protection device for high-voltage equipment according to claim 2, characterized in that: In the case where the threaded ring (6) is between the stud circumferential surface (5) and the nut circumferential surface (7), the diameter of the stud circumferential surface (5) is smaller than the nut circumferential surface (7), the diameter of the stud circumferential surface (5) is larger than the diameter of the fastener stud, and the nut circumferential surface (7) is larger than the diameter of the fastener nut.

4. The fastener protection device for high-voltage equipment according to claim 3, characterized in that: The outer edge of the threaded ring (6) is symmetrically provided with two radial pin holes.

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