Marine pump pre-corrosion pipeline
By installing precorrosion pipelines, including precorrosion flanges and connection pipelines at the inlet of marine pumps, the problem of difficult to observe corrosion of marine pipelines in seawater is solved, and better corrosion resistance and low-cost replacement are achieved. .
Patent Information
- Application Number
- CN202420209919.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-01-29
AI Technical Summary
The corrosion of existing marine pipelines in seawater is difficult to observe, resulting in high leakage and replacement costs.
Design a marine pump precorrosion pipeline, including connecting pipelines and precorrosion flanges, the precorrosion flange has a through hole in the center, and a drain hole is opened in the radial direction to form a corrosion reserved wall, and the drainage is observed. Whether there is sea water flowing out of the hole determines the corrosion condition.
Through the design of the precorrosion flange, seawater corrosion can be better prevented, and the seawater outflow in the discharge hole can be easily monitored and judged, thereby reducing replacement costs.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ships, and in particular relates to a pre-corrosion pipeline of a marine pump. Background Art
[0002] Seawater pipelines play a vital role in the technical field of ships and other ships. In seawater pipelines for ships, seawater flows in the pipelines, which seriously corrodes the pipelines. It is difficult to prevent the corrosion of the internal pipelines and the connecting flanges between pipelines, which often causes the seawater pipelines to leak due to corrosion by seawater. In the prior art, anti-corrosion materials such as polyethylene and epoxy paint are often applied to the inner surface of the pipeline to isolate the contact between seawater and the seawater pipeline to prevent the seawater pipeline from being corroded. However, this method is not easy to observe the corrosion of the pipeline, and after the corrosion breaks through the anti-corrosion material, the pipeline is further corroded and eventually leaks, and the pipeline needs to be replaced, which is costly and time-consuming.
[0003] Therefore, developing a pre-corrosion pipeline for a marine pump, whose corrosion condition is easy to observe and whose replacement cost is low, is a technical problem that needs to be solved urgently. Utility Model Content
[0004] The utility model aims to provide a pre-corrosion pipeline for a marine pump, so as to solve the problems existing in the prior art that the corrosion of the marine pipeline is difficult to observe, and the replacement is time-consuming and labor-intensive.
[0005] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:
[0006] The utility model proposes a pre-corrosion pipeline for a marine pump, which is used to be connected at the inlet of the marine pump, and comprises a connecting pipeline and a pre-corrosion flange; the connecting pipeline, whose inlet end is communicated with seawater, and whose outlet end is used to be communicated with the marine pump; the pre-corrosion flange comprises a pre-corrosion flange body, and the pre-corrosion flange body is used for electrochemical corrosion protection of the marine pump and the pipeline connected to the marine pump; a through hole is opened at the center of the pre-corrosion flange body, and a discharge hole is opened along its radial direction, a corrosion reserved wall is formed between the discharge hole and the through hole, and the discharge hole is used to observe the corrosion state of the corrosion reserved wall.
[0007] In some embodiments of the present application, there are multiple discharge holes, and the multiple discharge holes are opened symmetrically with respect to the radial direction of the corrosion flange.
[0008] In some embodiments of the present application, a grounding stud connection hole is provided on the pre-corrosion flange body, and the grounding stud connection hole is used to connect to a grounding wire.
[0009] In some embodiments of the present application, a valve is further included, which is connected to the connecting pipeline through a flange connection assembly, and the pre-corrosion flange is connected to the pipeline on a side of the valve close to the marine pump.
[0010] In some embodiments of the present application, the flange connection assembly includes a first connecting flange and a second connecting flange, and the first connecting flange, the valve, the pre-corrosion flange body and the second connecting flange are sequentially connected in the connecting pipeline from a direction away from the marine pump to a direction close to the marine pump.
[0011] In some embodiments of the present application, a cross-section of the connecting pipeline decreases from the pre-corrosion flange body to the inlet end of the marine pump.
[0012] In some embodiments of the present application, the connecting pipeline is extended from low to high in a direction away from the marine pump to close to the marine pump.
[0013] In some embodiments of the present application, the pre-corrosion flange is a galvanized flange.
[0014] In some embodiments of the present application, the valve is a butterfly valve.
[0015] In some embodiments of the present application, the connecting pipeline is a seamless steel pipe, and the inner surface of the seamless steel pipe is coated with a polyethylene plastic coating layer.
[0016] Compared with the prior art, the advantages and positive effects of the utility model are:
[0017] By connecting the marine pump pre-corrosion pipeline at the inlet of the marine pump, the seawater flowing into the pipeline of the marine pump after the marine pump flows through the marine pump pre-corrosion pipeline first, thereby achieving a better anti-corrosion effect;
[0018] Electrochemical corrosion protection of the marine pump and the pipeline connected to the marine pump is provided by arranging a pre-corroded flange body;
[0019] A discharge hole is provided on the pre-corrosion flange body, and a corrosion reserved wall is formed between the discharge hole and a through hole formed at the axis of the pre-corrosion flange body. In the process of seawater corroding the pre-corrosion flange body, the thickness of the corrosion reserved wall gradually decreases. After the corrosion reserved wall is completely corroded, the user can determine the corrosion condition of the pre-corrosion flange by observing the seawater overflowing from the discharge hole.
[0020] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a pre-corrosion pipeline for a marine pump proposed by the utility model;
[0023] Figure 2 yes Figure 1 The local schematic diagram of point B in the middle;
[0024] Figure 3 It is a partial top view of a pre-corrosion flange of a pre-corrosion pipeline of a marine pump proposed by the utility model;
[0025] Figure 4 yes Figure 3 Sectional view of AA in the middle;
[0026] Figure 5 It is a top view of a pre-corrosion flange of a pre-corrosion pipeline of a marine pump proposed by the utility model;
[0027] In the figure,
[0028] 100, marine pump;
[0029] 200, connecting pipeline;
[0030] 210, import end;
[0031] 220, exit end;
[0032] 300, pre-corroded flange;
[0033] 310, corrosion of flange body;
[0034] 311, through hole;
[0035] 312, bleed hole;
[0036] 313, corrosion reserved wall;
[0037] 314, grounding stud connection hole;
[0038] 400, valve;
[0039] 410, first connecting flange;
[0040] 420, second connecting flange. DETAILED DESCRIPTION
[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0042] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.
[0044] In the description of this application, 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, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0045] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0046] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.
[0047] In some embodiments of the present application, Figures 1 to 5 As shown, a pre-corrosion pipeline for a marine pump is used to be connected to the inlet of a marine pump 100. The inlet of the marine pump is directly connected to the sea. The pre-corrosion pipeline for the marine pump is arranged on the inlet side of the marine pump 100, which can better prevent corrosion of the marine pump 100 and the pipelines connected to the marine pump 100.
[0048] When the marine pump 100 is in use, it is generally placed in a vertical direction.
[0049] In some embodiments of the present application, a pre-corrosion pipeline for a marine pump includes a connecting pipeline 200 and a pre-corrosion flange 300 .
[0050] The inlet end 210 of the connecting pipe 200 is in communication with seawater. The outlet end 220 of the connecting pipe 200 is in communication with the marine pump 100 .
[0051] In some embodiments of the present application, the pre-corrosion flange 300 includes a pre-corrosion flange body 310. A through hole 311 is formed at the center of the pre-corrosion flange body 310.
[0052] A discharge hole 312 is provided along the radial direction of the pre-corrosion flange body 310 . A corrosion reserve wall 313 is formed between the discharge hole 312 and the through hole 311 .
[0053] When the seawater flows through the pre-corrosion flange body 310, the seawater contacts the through hole 311, and the seawater continuously corrodes the corrosion reserved wall 313. When the corrosion reserved wall 313 is continuously corroded until the through hole 311 and the discharge hole 312 are connected, the seawater will flow through the through hole 311 through the discharge hole 312 and flow out from the discharge hole 312. The user can judge the corrosion condition of the pre-corrosion flange body 310 by observing whether there is seawater flowing out of the discharge hole 312. Therefore, the user can judge the corrosion condition of the pre-corrosion flange body 310 by observing the corrosion condition of the discharge hole 312.
[0054] In some embodiments of the present application, since the pre-corrosion flange 300 is often installed in the connecting pipeline 200 extending horizontally, the axis of the pre-corrosion flange 300 is extended in the horizontal direction.
[0055] In some embodiments of the present application, there are multiple discharge holes 312 , and the multiple discharge holes 312 are symmetrically arranged with respect to the radial direction of the pre-corrosion flange body 310 .
[0056] During the installation of the pre-corrosion flange 300 on the pre-corrosion pipeline of the marine pump, since there are multiple discharge holes 312 and the discharge holes 312 are arranged symmetrically with respect to the radial direction of the pre-corrosion flange 300, the pre-corrosion flange 300 can be adjusted relatively easily, so that one of the discharge holes 312 is rotated to the lower side of the axis of the pre-corrosion flange body 310, and the discharge hole 312 is rotated to extend in the vertical direction. Therefore, after the corrosion reserved wall 313 is completely corroded, since the discharge hole 312 is connected to the through hole 311 from below, seawater can flow out from the discharge hole 312 due to gravity, which is convenient for observers to observe.
[0057] In some embodiments of the present application, the pre-corrosion flange body 310 is used for electrochemical corrosion protection of the marine pump 100 and the pipelines connected to the marine pump 100 .
[0058] In order to realize electrochemical corrosion protection of the pre-corrosion flange body 310 on the marine pump 100 and the pipeline connected to the marine pump 100, since the material of the pipeline connected to the marine pump 100 is generally a seamless steel pipe, the corrosion flange body 310 is a galvanized flange. According to the principle of electrochemical corrosion protection, the galvanized flange will be corroded by seawater and is used to protect the seamless steel pipe.
[0059] In some embodiments of the present application, the connecting pipeline 200 may also be made of a seamless steel pipe. In order to improve the anti-corrosion performance of the connecting pipeline 200 , the inner surface of the connecting pipeline 200 may be coated with a polyethylene coating layer.
[0060] In some embodiments of the present application, a grounding stud connection hole 314 is provided on the pre-corrosion flange body 310, and the grounding stud connection hole 314 is used to connect to a grounding wire. The grounding wire plays an insulating role.
[0061] In some embodiments of the present application, a valve 400 is further included. The pre-corrosion flange body 310 is connected to a side of the valve 400 in the connecting pipeline 200 close to the marine pump 100 .
[0062] The seawater first flows through the valve 400 and then flows through the pre-corrosion flange body 310. When the pre-corrosion flange 300 needs to be replaced, the valve 400 is closed and the operation can be carried out.
[0063] Seawater will first corrode the pre-corrosion flange 300 , thereby achieving corrosion protection for the hull pump 100 and the pipeline of the marine pump.
[0064] Specifically, in a marine pipeline, the valve 400 may be a butterfly valve.
[0065] In some embodiments of the present application, the valve 400 is connected to the connecting pipeline 200 via a flange connection assembly.
[0066] Specifically, the flange assembly includes a first connecting flange 410 and a second connecting flange 420 .
[0067] The first connecting flange 410 , the valve 400 , the pre-corrosion flange body 310 and the second connecting flange 420 are sequentially connected in the connecting pipeline 200 from a direction away from the marine pump 100 to a direction close to the marine pump 100 .
[0068] In some embodiments of the present application, the cross-sectional area of the connecting pipe 200 extending from the pre-corrosion flange body 310 to the marine pump 200 is reduced.
[0069] Specifically, the diameter of the connecting pipe 200 decreases in a direction from the pre-corroded flange body 310 to the marine pump 200 .
[0070] The connecting pipe 200 adopts a variable diameter type to change the flow rate of the liquid, so that more seawater contacts the pre-corrosion flange 300 with a larger contact area, which can corrode the pre-corrosion flange 300 to a greater extent and better protect the marine pump 100 and the pipeline of the marine pump 100 from corrosion.
[0071] In some embodiments of the present application, seawater adopts a bottom-in-and-top-out liquid level flow pattern relative to the pre-corrosion pipeline of the marine pump. Due to gravity, the flow rate of seawater in the connecting pipeline 200 will slow down, thereby extending the time it takes to flow through the pre-corrosion flange body 310, so that the seawater can effectively contact the pre-corrosion flange 300 with a larger contact area.
[0072] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.
[0073] The above is only a specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A pre-corrosion pipeline for a marine pump, characterized in that: It is used to be connected to the inlet of the marine pump and comprises: A connecting pipeline, the inlet end of which is connected to the seawater, and the outlet end of which is used to communicate with the marine pump; A pre-corrosion flange comprises a pre-corrosion flange body, wherein the pre-corrosion flange body is used for electrochemical corrosion protection of the marine pump and the pipeline connected to the marine pump; a through hole is opened at the center of the pre-corrosion flange body, and a discharge hole is opened along its radial direction, a corrosion reserved wall is formed between the discharge hole and the through hole, and the discharge hole is used to observe the corrosion state of the corrosion reserved wall.
2. The marine pump pre-corrosion pipeline according to claim 1, characterized in that: There are multiple discharge holes, and the multiple discharge holes are symmetrically opened relative to the radial direction of the corrosion flange.
3. The marine pump pre-corrosion pipeline according to claim 1, characterized in that: A grounding stud connection hole is provided on the pre-corrosion flange body, and the grounding stud connection hole is used to be connected to a grounding wire.
4. The marine pump pre-corrosion pipeline according to claim 1, characterized in that: The invention also comprises a valve which is connected to the connecting pipeline through a flange connection assembly, and the pre-corrosion flange is connected to the pipeline on one side of the valve close to the marine pump.
5. The marine pump pre-corrosion pipeline according to claim 4, characterized in that: The flange connection assembly includes a first connection flange and a second connection flange. The first connection flange, the valve, the pre-corrosion flange body and the second connection flange are sequentially connected in the connection pipeline from a direction away from the marine pump to a direction close to the marine pump.
6. The marine pump pre-corrosion pipeline according to claim 1, characterized in that: The cross section of the connecting pipeline decreases from the pre-corrosion flange body to the inlet end of the marine pump.
7. The marine pump pre-corrosion pipeline according to claim 1, characterized in that: The connecting pipeline is extended from low to high in a direction away from the marine pump to close to the marine pump.
8. The marine pump pre-corrosion pipeline according to claim 1, characterized in that: The pre-corrosion flange is a galvanized flange.
9. The marine pump pre-corrosion pipeline according to claim 4, characterized in that: The valve is a butterfly valve.
10. The marine pump pre-corrosion pipeline according to claim 1, characterized in that: The connecting pipeline is a seamless steel pipe, and the inner surface of the seamless steel pipe is coated with a polyethylene plastic coating layer.