Counterweight structure for cathode protection of ocean platform

Abstract

The utility model provides a counter weight structure for ocean platform cathode protection, which comprises a counter weight assembly, the counter weight assembly comprises a plurality of counter weight blocks and connecting pieces, the counter weight blocks and the connecting pieces can be overlapped in sequence, the connecting pieces are used for connecting the plurality of counter weight blocks which are overlapped in sequence into a whole, and each counter weight block comprises a lining frame structure and an exposed steel structure. An embedded sacrificial anode is installed on the lining frame structure, and a sacrificial anode is installed on the outer side of the balance weight assembly. The multiple balancing weights are matched with the connecting pieces, the number of the balancing weights can be adjusted according to requirements so that the weight of the balancing weight assembly can be adjusted, the embedded sacrificial anodes can provide an anti-corrosion effect for the lining frame structure, and the sacrificial anodes can provide an anti-corrosion effect for the exposed steel structure.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-corrosion protection, in particular to a counterweight structure used for cathode protection of an offshore platform. Background Art

[0002] The suspended auxiliary anode used in the offshore platform is an auxiliary anode for the forced current cathodic protection system. A layer of stable precious metal oxide with good flexibility, corrosion resistance and high conductivity, namely MMO / Ti, is thermally sintered on the titanium substrate. Usually, the suspended auxiliary anode includes multiple MMO / Ti tubular anodes, which are fixed in a porous protective casing and connected by a composite cable. The lower end of the anode (the last anode on the string assembly) is connected by a counterweight to prevent the entire string of auxiliary anodes from swinging and causing the auxiliary anode to fail.

[0003] Since the counterweight is located in the full seawater immersion area, the corrosion rate in this area is second only to the seawater splash zone. On the one hand, as the service life of offshore platforms increases, the counterweights used on many offshore platforms are corroded due to the strong corrosiveness of seawater, which causes the exposed steel structure and internal lining structure of the counterweight to corrode, causing the counterweight to fall, causing the suspended cathodic protection product to sway continuously in the seawater, and eventually causing the suspended cathodic protection product to fail, thus bringing greater losses to the company. On the other hand, due to the uncontrollable marine activities, the counterweight is insufficient in strength, which may cause the entire counterweight to break in the later stage, making the suspended cathodic protection product fail, thus causing a series of safety risks. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a counterweight structure for cathodic protection of marine platforms. The embedded anode carried by the counterweight structure can play an excellent anti-corrosion role, and the required weight of the counterweight block assembly can be adjusted on site, and the counterweight structure has the advantage of good anti-corrosion performance in seawater.

[0005] The specific technical solution is as follows: A counterweight structure for cathodic protection of an offshore platform, comprising a counterweight assembly, wherein the counterweight assembly comprises a plurality of counterweight blocks which can be stacked in sequence and a connecting piece, wherein the connecting piece is used to connect the plurality of counterweight blocks which are stacked in sequence into a whole, wherein the counterweight block comprises an inner liner frame structure, and an embedded sacrificial anode is installed on the inner liner frame structure.

[0006] Through the above technical solution, multiple counterweight blocks and connectors can be matched to adjust the number of counterweight blocks according to needs to adjust the weight of the counterweight assembly, and the embedded sacrificial anode can provide anti-corrosion for the liner frame structure.

[0007] Preferably, the connecting member includes a supporting member, the supporting member is fixedly connected to the counterweight block at the bottom, and the supporting member passes through other counterweight blocks in sequence and is fixed by a nut.

[0008] The above technical solution can make the installation of the counterweight assembly more convenient.

[0009] Preferably, the support member is a support tube or a support rod.

[0010] Through the above technical solution, the support member is selected from supports or support rods, which have a simple structure and are easy to cooperate with nuts to realize the assembly of the counterweight assembly.

[0011] Preferably, a lifting structure is installed on the support member.

[0012] Through the above technical solution, the counterweight structure can be installed to a designated position in seawater through the lifting equipment in cooperation with the lifting structure.

[0013] Preferably, arc-shaped handles are respectively provided on both sides of the counterweight.

[0014] The above technical solution makes it easier to carry the counterweight.

[0015] Preferably, a sacrificial anode is installed on the upper surface of the top counterweight.

[0016] Through the above technical solution, the sacrificial anode can be used to protect the exposed steel structure in the counterweight assembly.

[0017] Preferably, the sacrificial anode is an aluminum alloy sacrificial anode.

[0018] Through the above technical solution, an aluminum alloy sacrificial anode is used, which has the characteristics of excellent electrochemical performance, low anode consumption rate, easy processing and installation, and environmental friendliness.

[0019] The beneficial effects of the utility model are:

[0020] 1. Installing embedded sacrificial anodes on the liner frame structure and installing sacrificial anodes on the outside of the counterweight assembly can play an excellent anti-corrosion role, and the required weight of the counterweight assembly can be adjusted on site.

[0021] 2. The stackable design of the counterweight assembly can reduce transportation costs. It also has a reasonable structure, reliable performance, and reduces safety risks.

[0022] 3. An inner liner frame structure is set inside the counterweight block to improve its structural strength and extend its service life in seawater environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 This is a schematic diagram of the structure of this application;

[0025] Figure 2 for Figure 1 Enlarged view of part A;

[0026] Figure 3 This is a top view of this application;

[0027] 1. Counterweight, 11. Liner frame structure, 12. Arc handle, 13. Embedded sacrificial anode, 14. Sacrificial anode, 2. Support, 3. Nut, 4. Lifting structure, DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1

[0031] like Figure 1-3 As shown, a counterweight structure for cathodic protection of an offshore platform includes a counterweight assembly, wherein the counterweight assembly includes a plurality of counterweight blocks 1 that can be stacked in sequence and a connector. The connector is used to connect the plurality of counterweight blocks 1 stacked in sequence into a whole. The counterweight block 1 includes an inner liner frame structure 11, on which an embedded sacrificial anode 13 is installed.

[0032] The connecting member includes a support member 2, which can be a support rod or a support tube, and the support member 2 is fixedly connected to the bottom counterweight block 1. The support member 2 passes through other counterweight blocks 1 in sequence and is fixed by a nut 3. The support tube can be a steel tube.

[0033] A hoisting structure 4 is installed on the support member 2 to facilitate the hoisting of the counterweight structure.

[0034] Arc handles 12 are respectively arranged on both sides of the counterweight 1. The arc handles 12 can be made of steel bars to facilitate the transportation of the counterweight.

[0035] A sacrificial anode 14 is mounted on the upper surface of the top counterweight 1 to protect the exposed steel structure (such as the exposed part of the support pipe or support rod, the nut and the handle).

[0036] The sacrificial anode 14 is an aluminum alloy sacrificial anode.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A counterweight structure for cathodic protection of an offshore platform, characterized in that: The invention comprises a counterweight assembly, wherein the counterweight assembly comprises a plurality of counterweight blocks (1) which can be stacked in sequence and a connecting piece, wherein the connecting piece is used to connect the plurality of counterweight blocks (1) which are stacked in sequence into a whole, wherein the counterweight block (1) comprises an inner liner frame structure (11) and an exposed steel structure, wherein an embedded sacrificial anode (13) is installed on the inner liner frame structure (11).

2. A counterweight structure for cathodic protection of an offshore platform according to claim 1, characterized in that: The connecting member comprises a support member (2), wherein the support member (2) is fixedly connected to the counterweight block (1) at the bottom, and the support member (2) passes through other counterweight blocks (1) in sequence and is fixed by a nut (3).

3. A counterweight structure for cathodic protection of an offshore platform according to claim 2, characterized in that: The support member (2) is a support tube or a support rod.

4. The counterweight structure for cathodic protection of an offshore platform according to claim 2, characterized in that: A lifting structure (4) is installed on the support member (2).

5. The counterweight structure for cathodic protection of an offshore platform according to claim 1, characterized in that: Arc-shaped handles (12) are respectively arranged on both sides of the counterweight (1).

6. The counterweight structure for cathodic protection of an offshore platform according to claim 1, characterized in that: A sacrificial anode (14) is installed on the upper surface of the top counterweight block (1).

7. A counterweight structure for cathodic protection of an offshore platform according to claim 6, characterized in that: The sacrificial anode is an aluminum alloy sacrificial anode.

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