Corrosion-resistant stainless steel rod

Abstract

The utility model discloses a kind of corrosion-resistant stainless steel rods, including steel bar main body, fastener and compression fastener, steel bar main body surface is equipped with limit slot, fastener includes hoop and ear block, ear block surface is equipped with shaft sleeve slot, compression fastener both ends are equipped with shaft lug, shaft lug is inserted into shaft sleeve slot and forms loose fit, compression fastener surface is embedded with anode block, anode block is equipped with the joint convex for with steel bar main body sticking, joint convex is center offset structure, for stabilizing contact.The utility model realizes the quick installation and replacement of anode assembly by quick-mounting structure, anode block can be used as sacrificial anode and steel bar main body form primary cell structure, realize effective anticorrosion, with compact structure, installation is convenient, protection efficiency higher advantages.

Description

Technical Field

[0001] This utility model relates to the field of steel bar corrosion protection technology, specifically a corrosion-resistant stainless steel bar. Background Technology

[0002] Stainless steel bars are widely used in marine components, petrochemical equipment, electrolytic facilities, and municipal infrastructure due to their excellent mechanical strength and certain corrosion resistance. However, with the increasing complexity of operating environments, such as high salinity and humidity, high chloride ion concentrations, and the effects of corrosive media like prolonged immersion, relying solely on the natural passivation ability of the stainless steel itself is often insufficient to meet long-term service requirements. Therefore, in engineering applications, cathodic protection of stainless steel bars is typically achieved by adding sacrificial anodes, thereby inhibiting the corrosion process and extending their service life.

[0003] In existing technologies, sacrificial anodes are often installed on the surface of metal components using bolts, welding, or binding connections. Existing steel structure anode protection assemblies use metal strips to clamp the anode body and form contact with the component; similarly, existing replaceable magnesium anode assemblies use threaded fasteners to connect to water pipes. While these structures achieve a certain degree of galvanic cell anode connection, they still have the following drawbacks: First, traditional anode installation methods generally suffer from inaccurate positioning and difficulty in installation and removal, especially when used underwater, at high altitudes, or in confined spaces. This makes maintenance and replacement difficult and inefficient, potentially affecting the continuity of corrosion protection. Second, the contact between the anode body and the steel component often relies on manual tightening, lacking elasticity or automatic limiting structures. This results in weak contact or high contact resistance, affecting the efficiency of the galvanic cell reaction and reducing the accuracy and stability of anode corrosion. Third, existing quick-installation structures are mostly not optimized for cylindrical components like stainless steel rods, making it difficult to achieve efficient clamping and replacement of anode components while maintaining a compact structure.

[0004] Therefore, there is an urgent need to provide a new type of corrosion-resistant stainless steel rod structure with self-guiding clamping and quick anode installation and removal functions to solve the above problems, achieve long-term stable cathodic protection effect, and improve the assembly efficiency and maintenance convenience of the anti-corrosion device. Utility Model Content

[0005] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by this utility model is: a corrosion-resistant stainless steel bar, including a steel bar body, fasteners and clamping components.

[0007] The steel bar body has a cylindrical structure with a limiting groove on its surface to provide a positioning and installation reference for the fastener. The limiting groove is arranged along the axial direction of the steel bar body and its depth is adapted to the clamping structure of the fastener, which can realize quick positioning and stable support.

[0008] The fastener includes a clamp and lugs fixedly connected to both ends of the clamp. The clamp consists of two independent annular clamp structures, each located within a limiting groove on the main body of the steel bar, effectively securing the fastener to the surface of the steel bar. The two lugs are connected to both ends of the clamp, and each lug has a bushing groove on its outer side for axial insertion with the lugs of the fastener.

[0009] The clamping component is located on the outer side of the steel bar body, with lugs at both ends. The lugs insert into the bushing grooves of the lug blocks to form a hinged fit. Through a cap structure at the end of the lug, it contacts the guide wedge surface inside the bushing groove. During insertion, the cap slides along the guide wedge surface, causing the two lug blocks to automatically retract inward, thereby driving the clamp to securely hold the steel bar body. This structure achieves self-guiding fit and reliable positioning between the clamping component and the steel bar body, improving assembly efficiency.

[0010] In this embodiment, the clamping fastener has an embedded groove in the middle. The anode block is installed in the groove by press fitting. The anode block is made of zinc-based, aluminum-based or magnesium-based sacrificial anode material, which can preferentially undergo electrochemical reaction in a corrosive environment to achieve electrochemical cathodic protection of the steel rod body.

[0011] As shown in the figure, the outer surface of the anode block is provided with a contact protrusion. The contact protrusion is an arc-shaped protrusion with its arc center offset from the axis of the lug. The purpose is to ensure that the contact protrusion can reliably fit the outer surface of the steel rod body when the clamping fastener is in the clamping state, thereby establishing a stable electrical contact path, forming a local galvanic cell system, and concentrating the current on the anode block.

[0012] Furthermore, an elastic pad is provided in the middle of the clamping component. This elastic pad is located between the anode block and the steel rod body to buffer local stress and enhance the contact fit effect, while avoiding poor contact of the steel rod body under thermal expansion and contraction or vibration conditions.

[0013] When installing and using this utility model, first place two clamps in the limiting groove on the surface of the steel bar body, then connect the lugs to both ends of the clamps to form a preliminary fastener structure; next, insert the shaft lug of the clamp into the bushing groove, and at the same time, slide the shaft cap along the guide wedge surface to drive the lugs closer to achieve automatic clamping; finally, the anode block's connecting protrusion automatically fits onto the surface of the steel bar body, thus completing the installation.

[0014] The beneficial effects achieved by this utility model are as follows: 1. In this utility model, by setting a limiting groove on the surface of the steel rod body and cooperating with detachable structures such as clamps, ear blocks and clamping parts, the sacrificial anode block can be quickly positioned and stably installed, forming a galvanic cell structure that effectively contacts the steel rod body, thereby achieving preferential corrosion of the anode and improving the protection capability and service life of the steel rod in a highly corrosive environment.

[0015] 2. In this utility model, the clamping component and the lug are engaged by the lug and the bushing groove, combined with the guide wedge surface and the shaft cap structure, which can realize the self-guiding clamping and reliable limiting of the anode assembly, avoid manual adjustment errors, improve assembly efficiency and replacement convenience, and is suitable for the protection needs of stainless steel components in complex corrosive environments such as marine engineering, salt spray, and chemical industry. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 This is an exploded structural diagram of one embodiment of the present invention; Figure 3 This is a schematic diagram of the fastener and clamping device structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the clamping device and its surface anode block structure according to an embodiment of the present invention.

[0017] Figure label: 100. Steel bar body; 110. Limiting groove; 200. Fastener; 210. Clamp; 220. Lug; 221. Bushing Groove; 222. Guide Wedge Surface; 300, clamping component; 310, anode block; 320, shaft lug; 311, connecting lug. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0019] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0020] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a corrosion-resistant stainless steel rod.

[0021] Combination Figures 1-4 As shown, the present invention provides a corrosion-resistant stainless steel bar, comprising: a steel bar body 100, fasteners 200 and clamping fasteners 300.

[0022] The main body 100 of the steel rod is a cylindrical structure, and its surface is provided with a number of limiting grooves 110 for installing components along the axial direction. The limiting grooves 110 are annular groove structures, which are used to achieve accurate positioning and axial limiting of the fasteners 200.

[0023] The fastener 200 includes an annular clamp 210 and lugs 220 fixedly disposed at both ends of the clamp 210. The clamp 210 consists of two independent annular clamp structures, each disposed within a limiting groove 110, forming an integral clamping structure by connecting with the lugs 220. The lugs 220 are used to support the hinged connection with the fastener 300. Each lug 220 has a bushing groove 221 on its outer surface, which is used for the insertion and engagement of the lugs 320 on both sides of the fastener 300 to achieve the rotatable installation and detachable connection of the fastener 300.

[0024] The clamping member 300 is a rigid structure with an overall arch shape, and has lugs 320 on both sides that mate with the bushing groove 221. The ends of the lugs 320 are provided with cap structures for axially locking onto the lug blocks 220 after insertion into the bushing groove 221. Preferably, the inner wall of the bushing groove 221 is provided with a guide wedge surface 222. During insertion, the cap slides against the guide wedge surface 222, allowing the lug blocks 220 to gradually approach each other, thereby achieving stable clamping and positioning of the clamping member 300.

[0025] An elastic pad is provided in the middle structure of the clamping member 300. The elastic pad is located below the anode mounting part of the clamping member 300. It can play a buffering and supporting role when the anode block 310 is attached to the surface of the steel rod body 100, so as to ensure that the anode block 310 and the outer surface of the steel rod body 100 are tightly attached, thereby improving contact stability and galvanic cell reaction efficiency.

[0026] The surface of the clamping member 300 is provided with a recessed groove for mounting the anode block 310. The anode block 310 is firmly embedded into the recessed groove of the clamping member 300 by press fitting. The anode block 310 can be made of zinc, aluminum, or magnesium-based sacrificial anode material. A receiving protrusion 311 is provided on the side of the anode block 310 facing the steel rod body 100. The receiving protrusion 311 is an arc-shaped protrusion with its center offset from the axis of the lug 320, forming a surface-contact with the outer surface of the steel rod body 100. This creates a micro-galvanic cell system through the contact potential difference, achieving active anodic corrosion protection, i.e., preferential anodic corrosion while protecting the steel rod body. The center of the arc-shaped profile of the receiving protrusion 311 is offset relative to the axis of the lug 320, thereby achieving automatic alignment and enhancing the pressing and fitting effect during clamping.

[0027] Working principle and usage process of this utility model: During use, the operator first nests the fastener 200 into the limiting groove 110 on the steel rod body 100, and then aligns the two side lugs 220 with the shaft lugs 320 of the clamping fastener 300 for a snap-fit ​​engagement. The shaft lugs 320 have a shaft cap structure at their ends. As the shaft cap slides in contact with the guide wedge surface 222 on the lugs 220, it gradually drives the two side lugs to tighten inward, thereby completing the clamping and fixing of the clamping fastener 300 to the steel rod body 100.

[0028] An anode block 310 is mounted on the clamping member 300. By deflecting the structure of the clamping member 300, the anode block 310 is fixed in the preset groove of the clamping member 300 by press fitting or insertion. The surface of the anode block 310 is provided with a contact protrusion 311, which has an eccentric arc structure. Its protrusion can be in close contact with the surface of the steel rod body 100 to form a reliable potential connection path.

[0029] When this invention is used in marine or high-salt corrosive environments, the anode block 310 (such as those made of zinc, aluminum, or magnesium-based materials) acts as a sacrificial anode, forming a galvanic cell structure with the steel rod body 100. In an electrolytic environment, the anode block 310 preferentially corrodes, thereby effectively protecting the steel rod body 100 from corrosion damage and achieving active electrochemical protection.

[0030] If the anode block 310 is completely corroded or reaches the end of its service life, the user can loosen the connection at the lug 320 and unscrew the clamp 300 to quickly replace the anode assembly. The entire operation does not require removing the clamp 210, which improves maintenance efficiency and operational safety.

[0031] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A corrosion-resistant stainless steel bar, characterized in that, include: The steel bar body (100), fasteners (200) and clamping members (300) are provided. The surface of the steel bar body (100) is provided with a limiting groove (110) for positioning the fasteners (200). The fasteners (200) include a clamp (210) and ear blocks (220) fixed at both ends of the clamp (210). The surfaces of the two ear blocks (220) are provided with bushing grooves (221). The clamping members (300) are provided with shaft ears (320) on both sides for engaging with the bushing grooves (221). An anode block (310) is embedded in the surface of the clamping members (300), and the surface of the anode block (310) is provided with a contact protrusion (311) for abutting against the surface of the steel bar body (100). The surface of the contact protrusion (311) is arc-shaped, and the center of the circle is offset from the axis of the shaft ear (320).

2. The corrosion-resistant stainless steel bar according to claim 1, characterized in that, The bushing groove (221) is provided with a guide wedge surface (222) on the inner side, and the end of the shaft lug (320) is provided with a shaft cap structure. The shaft cap slides and guides the two side lugs (220) by contacting the surface of the guide wedge surface (222), so as to achieve relative closeness and fastening of the two side lugs (220).

3. The corrosion-resistant stainless steel bar according to claim 1, characterized in that, The anode block (310) is installed in the groove provided on the surface of the clamping device (300) by press fitting, and the anode block (310) is made of zinc, aluminum or magnesium sacrificial anode material.

4. The corrosion-resistant stainless steel bar according to claim 1, characterized in that, The protrusion (311) forms a surface-to-surface contact with the outer surface of the steel rod body (100) and forms a local galvanic cell structure through the potential difference to achieve active anodic corrosion protection.

5. The corrosion-resistant stainless steel bar according to claim 1, characterized in that, The clamp (210) consists of two independent ring clamp structures, which are respectively located in the limiting groove (110) and are connected with the ear block (220) to form an integral clamping structure.

6. The corrosion-resistant stainless steel bar according to claim 1, characterized in that, An elastic pad is provided in the middle of the clamping component (300), which is used to support the contact effect between the surface of the anode block (310) and the surface of the steel rod body (100).

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