阅读说明：本技术 用于海水管路的防腐蚀装置和盲板法兰组件 (Corrosion protection device for seawater pipeline and blind flange assembly ) 是由 张晓军 马宁 于 2019-09-18 设计创作，主要内容包括：本发明公开了一种用于海水管路的防腐蚀装置,所述防腐蚀装置包括：短管法兰,所述短管法兰连接在海水管路靠近需要防腐蚀保护设备进口的一端；盲板法兰,所述盲板法兰通过紧固螺栓安装在所述短管法兰上,所述盲板法兰靠近所述短管法兰的一侧固定连接有面板,所述面板上连接有锌块；以及防落筒,所述防落筒的筒沿夹设固定在所述短管法兰和所述盲板法兰之间,所述面板和锌块容置在所述防落筒的筒体内。本发明解决了防腐蚀锌块在海水管路上不易安装、更换困难、易脱落的问题,提高了防腐蚀锌块安装与更换的效率,可有效预防防腐蚀锌块因局部脱落造成的设备损坏,该装置制作简单、安装方便,可广泛适用于各种通径海水管路的防腐蚀锌块的安装。(The invention discloses an anti-corrosion device for a seawater pipeline, which comprises: the short pipe flange is connected to one end, close to the inlet of equipment needing anti-corrosion protection, of the seawater pipeline; the blind flange is mounted on the short pipe flange through a fastening bolt, one side, close to the short pipe flange, of the blind flange is fixedly connected with a panel, and a zinc block is connected onto the panel; and the cylinder edge of the anti-falling cylinder is clamped and fixed between the short pipe flange and the blind flange, and the panel and the zinc block are accommodated in the cylinder body of the anti-falling cylinder. The device solves the problems that the anti-corrosion zinc block is not easy to install, replace and fall off on the seawater pipeline, improves the installation and replacement efficiency of the anti-corrosion zinc block, can effectively prevent equipment damage caused by local falling of the anti-corrosion zinc block, is simple to manufacture and convenient to install, and can be widely applied to installation of the anti-corrosion zinc block of the seawater pipeline with various drift diameters.)

1. An anti corrosion device for sea water pipelines, characterized in that it comprises: the short pipe flange (8) is connected to one end, close to the inlet of equipment needing anti-corrosion protection, of the seawater pipeline (9);

the blind flange (1) is mounted on the short pipe flange (8) through fastening bolts, a panel (2) is fixedly connected to one side, close to the short pipe flange (8), of the blind flange (1), and a zinc block (4) is connected to the panel (2); and

the anti-falling device comprises an anti-falling cylinder (5), wherein the cylinder edge of the anti-falling cylinder (5) is clamped and fixed between the short pipe flange (8) and the blind flange (1), the panel (2) and the zinc block (4) are accommodated in the cylinder body of the anti-falling cylinder (5), and a hole for seawater circulation is formed in the cylinder wall of the anti-falling cylinder (5).

2. Anti corrosion device for sea water pipelines according to claim 1, characterized in that a connecting cable (11) is connected between the stub flange (8) and the blind flange (1).

3. Anti corrosion device for sea water pipelines according to claim 1, characterized in that a handle (7) is fixedly connected to the side of the blind flange (1) remote from the stub flange (8).

4. The corrosion protection device for sea water pipelines according to claim 1, characterized in that the side of the blind flange (1) remote from the stub flange (8) is provided with a vent valve (6), the vent valve (6) being capable of communicating air on both sides of the blind flange (1).

5. The anti-corrosion device for the seawater pipeline as claimed in claim 1, wherein studs (3) are welded on both sides of the panel (2), through holes for the studs (3) to pass through are arranged on the zinc blocks (4), and the studs (3) are matched with gaskets and nuts to fixedly connect the two zinc blocks (4) on both sides of the panel (2) respectively.

6. Anti corrosion device for sea water pipelines according to claim 1, characterized in that the blind flange (1) can be mounted to a horizontal and/or vertical sea water pipeline (9) if the equipment inlet is a positive head; if the equipment inlet is a negative pressure head, the blind flange (1) can only be arranged on a horizontal seawater pipeline (9).

7. An anti corrosion device for sea water pipelines, characterized in that it comprises: a flange (10) at the seawater inlet requiring corrosion protection equipment;

the blind flange (1) is mounted on the inlet flange (10) through fastening bolts, a panel (2) is fixedly connected to one side, close to the inlet flange (10), of the blind flange (1), and a zinc block (4) is connected to the panel (2); and

the anti-falling device comprises an anti-falling cylinder (5), wherein the cylinder edge of the anti-falling cylinder (5) is clamped and fixed between the inlet flange (10) and the blind flange (1), the panel (2) and the zinc block (4) are accommodated in the cylinder body of the anti-falling cylinder (5), and the cylinder wall of the anti-falling cylinder (5) is provided with a hole for seawater circulation.

8. A blind flange assembly, comprising:

the blind flange (1), one side of the blind flange (1) is fixedly connected with a panel (2), and the panel (2) is connected with a zinc block (4); and

the anti-falling device comprises an anti-falling cylinder (5), wherein the cylinder edge of the anti-falling cylinder (5) is clamped and fixed between the blind flange (1) and a flange butted with the blind flange, the panel (2) and the zinc block (4) are accommodated in a cylinder body of the anti-falling cylinder (5), and a hole for seawater circulation is formed in the cylinder wall of the anti-falling cylinder (5).

Technical Field

The invention belongs to the field of design and manufacture of ship seawater systems, and particularly relates to an anti-corrosion device and a blind flange assembly for a seawater pipeline.

Background

In a seawater system, because seawater has strong corrosivity, important equipment installed on a seawater pipeline, such as a seawater pump, a plate cooler and the like, cannot be completely made of an anti-corrosion material in consideration of actual conditions such as manufacturing cost and purchasing cost, so that the anti-corrosion requirement needs to be considered in later installation, the service life of the system is prolonged, and the stability of the system operation is ensured.

In general, the marine equipment is protected from corrosion by a sacrificial anode method, and the material is generally zinc or zinc alloy. The zinc block or the zinc alloy is arranged as close to the inlet of the equipment as possible, and when corrosion occurs in a system formed by the zinc block and the equipment, because the activity of metal zinc is high, electrons are easy to lose, and the zinc block or the zinc alloy can be corroded preferentially, so that the equipment is protected. Its advantages are low cost and need to be periodically replaced according to the designed service life of zinc block or zinc alloy.

For anticorrosive areas without installation space limitation, such as ship hulls, submarine doors, ballast tanks and the like, standard zinc-aluminum-cadmium alloy sacrificial anodes can be adopted, and the installation mode is simpler. However, for some seawater pipelines, because of their small size, they cannot be installed with standard sacrificial zinc alloy anodes, and only can be made into non-standard zinc blocks or zinc alloys by manufacturers according to the actual size of the seawater pipeline, and then corresponding installation devices are designed.

In addition, when a zinc block installation device is designed, the problem of corrosion speed of the zinc block is also considered, and the problem that partial zinc block falls into equipment due to inconsistent corrosion speed to cause failure or damage to the equipment is prevented.

Therefore, for seawater pipelines imported by partial equipment, the anti-corrosion zinc block is difficult to install, replace and fall off, and the problem to be solved is urgently needed.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an anti-corrosion device and a blind flange assembly for a seawater pipeline.

In order to achieve the purpose, the invention adopts the following technical scheme:

an anti-corrosion arrangement for a sea water pipeline, the anti-corrosion arrangement comprising: the short pipe flange is connected to one end, close to the inlet of equipment needing anti-corrosion protection, of the seawater pipeline; the blind flange is mounted on the short pipe flange through a fastening bolt, one side, close to the short pipe flange, of the blind flange is fixedly connected with a panel, and a zinc block is connected onto the panel; and

the anti-falling cylinder is fixedly arranged between the short pipe flange and the blind flange along a clamp, the panel and the zinc block are accommodated in the cylinder body of the anti-falling cylinder, and a hole for seawater circulation is formed in the cylinder wall of the anti-falling cylinder.

Preferably, a connecting cable is connected between the short pipe flange and the blind flange.

Preferably, a handle is fixedly connected to one side, away from the short pipe flange, of the blind flange.

Preferably, one side of the blind flange, which is far away from the short pipe flange, is provided with a vent valve, and the vent valve can be communicated with air on two sides of the blind flange.

Preferably, the double-screw bolt has all been welded on the two sides of panel, be provided with the confession on the zinc block the through-hole that the double-screw bolt passed, double-screw bolt cooperation gasket, nut will two zinc block fixed connection respectively is in the two sides of panel.

Preferably, if the equipment inlet is a positive pressure head, the blind flange can be installed on a horizontal and/or vertical seawater pipeline; if the equipment inlet is a negative pressure head, the blind flange can only be arranged on a horizontal seawater pipeline.

An anti-corrosion arrangement for a sea water pipeline, the anti-corrosion arrangement comprising: a flange at the seawater inlet of the equipment needing anti-corrosion protection; the blind flange is mounted on the flange at the inlet through a fastening bolt, one side, close to the flange at the inlet, of the blind flange is fixedly connected with a panel, and a zinc block is connected onto the panel; and

the anti-falling cylinder is fixedly arranged between the flange at the inlet and the blind flange along the clamp, the panel and the zinc block are accommodated in the cylinder body of the anti-falling cylinder, and a hole for seawater circulation is formed in the cylinder wall of the anti-falling cylinder.

A blind flange assembly, comprising: the device comprises a blind flange, a panel and a zinc block, wherein one side of the blind flange is fixedly connected with the panel; and

the anti-falling cylinder is fixedly arranged between the blind flange and the flange butted with the blind flange along a clamp, the panel and the zinc block are accommodated in the cylinder body of the anti-falling cylinder, and a hole for seawater circulation is formed in the cylinder wall of the anti-falling cylinder.

Compared with the prior art, the invention has the beneficial effects that:

1. the installation and the replacement are convenient, the panel is installed on the standard blind flange, and the anti-corrosion zinc block is installed on the panel through the welding stud assembly, so that when a system consisting of the zinc block and equipment is corroded, the zinc block is corroded preferentially due to high activity of metal zinc, and the equipment is protected;

2. the anti-falling cylinder can effectively prevent the zinc block from locally falling off and entering a seawater pipeline system to cause equipment damage;

3. the blind flange for installing the zinc block can be adjusted according to the actual size of the zinc block, and the blind flange with the proper drift diameter is selected according to the requirement so as to adapt to different scenes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a blind flange assembly.

FIG. 2 is a schematic top view of a blind flange assembly.

Fig. 3 is a schematic sectional view showing an anticorrosive device for seawater pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1 to 3, the present embodiment provides an apparatus for preventing corrosion of a sea water pipeline, comprising: the short pipe flange 8 and the short pipe flange 8 are connected to one end, close to the inlet of equipment needing anti-corrosion protection, of the seawater pipeline 9; the blind flange 1 is installed on the short pipe flange 8 through fastening bolts, one side, close to the short pipe flange 8, of the blind flange 1 is fixedly connected with a panel 2, and the panel 2 is connected with a zinc block 4; and

the anti-falling cylinder 5 is characterized in that the cylinder edge of the anti-falling cylinder 5 is clamped and fixed between the short pipe flange 8 and the blind flange 1, the panel 2 and the zinc block 4 are accommodated in the cylinder body of the anti-falling cylinder 5, and a hole for seawater circulation is formed in the cylinder wall of the anti-falling cylinder 5.

And a connecting cable 11 is connected between the short pipe flange 8 and the blind flange 1.

One side of the blind flange 1 far away from the short pipe flange 8 is fixedly connected with a handle 7.

One side of the blind flange 1, which is far away from the short pipe flange 8, is provided with a vent valve 6, and the vent valve 6 can be communicated with air on two sides of the blind flange 1.

The double-screw bolt 3 has all been welded on the both sides of panel 2, is provided with the through-hole that supplies double-screw bolt 3 to pass on zinc piece 4, and double-screw bolt 3 cooperation gasket, nut are with two zinc pieces 4 fixed connection respectively on the both sides of panel 2.

If the inlet of the device is a positive pressure head, the blind flange 1 can be arranged on a horizontal and/or vertical seawater pipeline 9; if the inlet of the device is a negative pressure head, the blind flange 1 can only be mounted on the horizontal seawater pipeline 9.

The present example also provides another corrosion protection apparatus for use in a sea water pipeline, the corrosion protection apparatus comprising: a flange 10 at the seawater inlet where corrosion protection equipment is required; the blind flange 1 is arranged on the flange 10 at the inlet through fastening bolts, one side of the blind flange 1 close to the flange 10 at the inlet is fixedly connected with a panel 2, and the panel 2 is connected with a zinc block 4; and

the anti-falling cylinder 5 is characterized in that the cylinder edge of the anti-falling cylinder 5 is clamped and fixed between the inlet flange 10 and the blind flange 1, the panel 2 and the zinc block 4 are accommodated in the cylinder body of the anti-falling cylinder 5, and the cylinder wall of the anti-falling cylinder 5 is provided with holes for seawater circulation.

The panel 2 is welded on the blind flange 1, the stud 3 is welded on two sides of the panel 2, and the zinc block 4 is fixed on two sides of the panel through a nut, an elastic gasket and a flat gasket. The anti-falling cylinder 5 is arranged below the blind flange 1, small holes are uniformly distributed around the cylinder body, and the smoothness of seawater flow is ensured while equipment damage caused by local falling of the zinc blocks is prevented. The vent valve 6 is arranged on the upper surface of the blind flange 1 and used for discharging gas in the branch pipe and preventing the corrosion prevention effect of the zinc block from being blocked due to the existence of air. The handle 7 is arranged on the upper surface of the flange, so that the blind flange can be conveniently disassembled and assembled.

The use process is specifically described with reference to fig. 3, a short pipe flange 8, a sea water pipeline 9, an inlet flange 10, and a connecting cable 11. The blind flange 1 is arranged on the short pipe flange 8, the anti-falling cylinder 5 is fixed by using the pressing force between the blind flange and the short pipe flange, and the zinc blocks which possibly fall off can be effectively prevented from entering a seawater system. The pipe spool flange 8 is mounted on the sea water pipeline 9 in a position as close as possible to the inlet flange 10. Since the flanges of the ship piping are provided with a gasket for sealing, which may block the transfer of electrons from the corrosion-proof zinc block, the connection cable 11 is usually used to connect the two flanges, including the blind flange 1 and the short pipe flange 8, and the seawater piping flange and the inlet flange 10, thereby ensuring the normal operation of the corrosion-proof system. In addition to this, the blind flange 1 for mounting the zinc block can be directly connected to the inlet flange 10. Further, when the connection cable 11 is installed, care is taken to clean the paint on the flange surface at the contact position with the connection cable.

This embodiment still provides a blind flange subassembly, and blind flange subassembly includes: the blind flange comprises a blind flange 1, wherein a panel 2 is fixedly connected to one side of the blind flange 1, and a zinc block 4 is connected to the panel 2; and

the anti-falling cylinder 5 is characterized in that the cylinder edge of the anti-falling cylinder 5 is clamped and fixed between the blind flange 1 and a flange butted with the blind flange, the panel 2 and the zinc block 4 are accommodated in the cylinder body of the anti-falling cylinder 5, and a hole for seawater circulation is formed in the cylinder wall of the anti-falling cylinder 5.

Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.