Transformer for ocean platform

Abstract

The utility model discloses a transformer for an ocean platform, which comprises a framework, a transformer core, a transformer core and a transformer core, the coil winding is wound on the outer side surface of the framework; the number of the magnetic cores is two, any magnetic core comprises an inserting part and a main body frame, the inserting parts of the two magnetic cores are inserted along the two ends of the inserting hole respectively, and the main body frames of the two magnetic cores are in butt joint with each other to form a rectangular frame; the NOMEX paper is wound on the outer side of the coil winding, the position between the coil winding and the main body frame is filled with the NOMEX paper, and the NOMEX paper abuts against the inner side face of the main body frame; the fixing clamp is installed on the outer sides of the two magnetic cores, and the fixing clamp is used for clamping the two magnetic cores. The transformer for the ocean platform solves the problems that an existing transformer for the ocean platform is damaged and has potential safety hazards due to dissolution of adhesive tape and epoxy resin.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer used for an offshore platform. Background Art

[0002] Offshore platform transformers are designed specifically to provide power to electrical equipment on offshore platforms. Their operating principle is similar to that of conventional transformers, converting voltage from one voltage level to another. Due to the harsh operating environment of offshore platforms, the impact of factors such as seawater erosion, climate change, and vibration and shock caused by platform movement on the equipment must be considered.

[0003] Existing offshore platform transformers often use polyimide tape for inter-winding insulation, with epoxy resin applied at the junctions between the core and the iron shell. However, polyimide tape and epoxy resin can dissolve in marine transformer oil, leading to insulation failure between windings. Dissolving polyimide tape and epoxy resin in transformer oil can also lead to oil contamination, posing a safety hazard under long-term operating conditions. Utility Model Content

[0004] The main purpose of the utility model is to provide a transformer for an offshore platform, aiming to solve the problem that the existing offshore platform transformers are damaged and have potential safety hazards due to the dissolution of tape and epoxy resin.

[0005] To achieve the above objectives, the present invention provides a transformer for an offshore platform, comprising:

[0006] A frame, wherein the frame is provided with a through hole along its axial direction;

[0007] A coil winding, the coil winding being wound around the outer side of the frame;

[0008] There are two magnetic cores, each of which includes a plug-in portion and a main frame. The plug-in portions of the two magnetic cores are respectively inserted along the two ends of the jack, and the main frames of the two magnetic cores are connected to each other to form a rectangular frame.

[0009] NOMEX paper is wound around the outside of the coil winding, the NOMEX paper is filled between the coil winding and the main frame, and the NOMEX paper abuts against the inner side of the main frame;

[0010] The fixing clamp is installed on the outside of the two magnetic cores, and the fixing frame is used to clamp the two magnetic cores.

[0011] Optionally, the fixing clamp includes a main body plate and clamping plates symmetrically arranged on both sides of the main body plate, and the two clamping plates respectively clamp the outer sides of the two magnetic cores.

[0012] Optionally, the two clamping plates are arranged to be tilted toward the inner side of the fixing clamp, and the magnetic core is used to fit the outer side of the clamping plates to form a groove that abuts against the end of the clamping plates.

[0013] Optionally, the main body plate is attached to one side of the rectangular frame, and the main body plate covers the opening on one side of the rectangular frame.

[0014] Optionally, two annular baffles are symmetrically provided at both ends of the skeleton, and a winding space for winding the coil winding is formed between the two annular baffles.

[0015] Optionally, a plurality of terminals are symmetrically arranged at both ends of the skeleton, and the terminals are integrally formed with the skeleton.

[0016] Optionally, an insulating paper is further provided between the magnetic core and the terminal, the insulating paper is provided in a meander-shaped structure, and the two annular baffles are plugged into the insulating paper.

[0017] Optionally, the magnetic core is configured as an integrally formed ferrite structure.

[0018] Optionally, the skeleton is configured as a bakelite integrally formed structure.

[0019] Optionally, the fixing clip is configured as an integrally formed structure made of SUS-301 material.

[0020] The beneficial effects of the utility model are as follows: the transformer structure of the existing offshore platform is improved, the conventional method of fixing the winding by wrapping polyimide tape is eliminated, NOMEX paper is wound around the winding, and the NOMEX paper is clamped by the inner side of the magnetic core, thereby ensuring the stable installation of the NOMEX paper and avoiding the problem of insulation failure caused by dissolution of the conventional polyimide tape due to long-term contact with the transformer oil; at the same time, the conventional point epoxy resin adhesive structure between the magnetic cores is eliminated, and the magnetic cores are directly clamped by a fixing clamp, thereby ensuring structural stability and avoiding the problem of insulation failure caused by dissolution of the epoxy resin adhesive in the transformer oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Fig. 1 This is a schematic diagram of the overall structure of the transformer of the utility model;

[0023] Fig. 2This is a schematic diagram of the structure of the transformer of the utility model when the fixing clip is not installed;

[0024] Fig. 3 This is a schematic diagram of the explosion structure of the transformer of the utility model;

[0025] Description of labels:

[0026] 1. Frame; 11. Jack; 12. Ring baffle; 13. Terminal;

[0027] 2. Coil winding;

[0028] 3. Magnetic core; 31. Connecting portion; 32. Main frame; 33. Groove;

[0029] 4. NOMEX paper;

[0030] 5. Fixing clip; 51. Main plate; 52. Clamp;

[0031] 6. Insulation paper.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0036] In the prior art, the insulation structure of the coil winding of the transformer is usually wound outside the coil winding by polyimide tape, and the fixing of the iron core usually needs to bond epoxy resin glue between the iron cores to fix it. For the transformer used on the offshore platform, due to the influence of the use environment, the polyimide tape and the epoxy resin have the risk of dissolution in the environment of the transformer oil for a long time. Once the dissolution of the two materials occurs, it will cause the insulation failure between the windings. At the same time, the dissolution of the two materials in the transformer oil will cause the pollution of the transformer oil, affecting the normal use of the transformer.

[0037] In summary, an embodiment of the present application proposes a transformer for an offshore platform, referring to Figs. 1 to 3 , comprising:

[0038] A skeleton 1, a through hole 11 is opened along the axial direction of the skeleton 1;

[0039] A coil winding 2, the coil winding 2 is wound outside the skeleton 1;

[0040] A magnetic core 3, provided as two, any magnetic core 3 includes a plug-in part 31 and a main body frame 32, the plug-in parts 31 of the two magnetic cores 3 are respectively inserted along the two ends of the through hole 11, and the main body frames 32 of the two magnetic cores 3 are mutually butted to form a rectangular frame;

[0041] NOMEX paper 4, wound outside the coil winding 2, the NOMEX paper 4 is filled between the coil winding 2 and the main body frame 32, and the NOMEX paper 4 and the inner side of the main body frame 32 abut;

[0042] A fixing clamp 5 is installed outside the two magnetic cores 3, and the fixing frame is used for clamping the two magnetic cores 3.

[0043] In this embodiment, the assembly structure of the existing transformer is improved. Specifically, the wire winding is first wound on the bobbin 1, and then MOMEX paper is wound around the outside of the coil winding 2 to insulate and fix the coil winding 2. After the MOMEX paper is wound, the plug-in portions 31 of the two magnetic cores 3 are respectively inserted into the two ends of the insertion hole 11 of the bobbin 1. At this time, the main frames 32 of the two magnetic cores 3 are connected to each other to form a rectangular frame structure. It should be noted that the coil winding 2 and the MOMEX paper are located inside the rectangular frame. Therefore, in this embodiment, with the help of this rectangular frame structure, the number of winding turns of the MOMEX paper is controlled when the MOMEX paper is wound. After the magnetic core 3 is inserted into the bobbin 1, the MOMEX paper is tightly abutted against the inner side surface of the main frame 32 of the magnetic core 3. That is, the MOMEX paper is clamped to the outside of the coil winding 2 by the structure of the main frame 32 of the magnetic core 3, ensuring the stability of the structure. There is no need to use adhesive to fix the MOMEX paper, avoiding the risk of the adhesive dissolving in the transformer oil. At the same time, in this embodiment, the MOMEX paper adopts DuPont's NOMEX paper 4 in the prior art, which is a high-performance synthetic material with high mechanical properties, flexibility and good electrical properties. It will not dissolve in transformer oil even under long-term operation, and can effectively improve the safety and service life of the transformer.

[0044] Furthermore, in this embodiment, the fixation between the two magnetic cores 3 eliminates the traditional method of fixing by epoxy resin glue, avoiding the dissolution of epoxy resin glue in the transformer oil, and the fixation between the magnetic cores 3 is achieved by improving the structure. Specifically, in this embodiment, a fixing clip 5 is provided. After the two magnetic cores 3 are respectively inserted into the two ends of the socket 11 of the skeleton 1, the two magnetic cores 3 are clamped with the fixing clip 5, so that the joints of the two magnetic cores 3 can fit tightly to ensure the stability of the structure.

[0045] Furthermore, the fixing clamp 5 includes a main plate 51 and clamping plates 52 symmetrically arranged on both sides of the main plate 51. The two clamping plates 52 respectively clamp the outer sides of the two magnetic cores 3. In this embodiment, the fixing clamp 5 is configured as a U-shaped integrated structure. During installation, the two clamping plates 52 of the fixing clamp 5 only need to be inserted from the ends of the two magnetic cores 3 to clamp the two magnetic cores 3. This facilitates installation and removal and improves assembly efficiency.

[0046] Furthermore, in order to enhance the clamping force between the two clamps 52, the two clamps 52 are tilted toward the inner side of the fixing clamp 5 so that the clamps 52 can be tightly clamped on the outer sides of the two magnetic cores 3 to ensure the stability of the structure. In addition, the outer sides of the magnetic cores 3 for fitting the clamps 52 are provided with grooves 33 that abut against the ends of the clamps 52. It should be noted that although the tilting of the two clamps 52 can enhance the clamping force, the outer sides of the existing magnetic cores 3 for fitting the clamps 52 are flat. When the clamps 52 are tilted, the contact surface between the clamps 52 and the outer sides of the magnetic cores 3 is reduced. Therefore, in this embodiment, the grooves 33 are provided on the outer sides of the magnetic cores 3. This provides a tilting margin for the clamps 52, allowing most of the surface of the clamps 52 to fit with the magnetic cores 3, thereby increasing the contact area between the two, thereby further enhancing the clamping force and ensuring the stability of the structure.

[0047] Furthermore, the main plate 51 is attached to one side of the rectangular frame and covers the opening on one side of the rectangular frame. In this embodiment, the area of ​​the main plate 51 is larger than the opening of the rectangular frame. When the fixing clamp 5 is in place, the main plate 51 fits tightly against the side of the rectangular frame, ensuring structural stability while enclosing the winding coil within the rectangular frame, providing some protection for the coil and extending the service life of the transformer.

[0048] Furthermore, two annular baffles 12 are symmetrically provided at both ends of the frame 1, and a winding space for winding the coil winding 2 is formed between the two annular baffles 12. In this embodiment, after the two annular baffles 12 are provided at both ends of the frame 1, the winding space formed can facilitate the winding of the coil winding 2, position the winding of the coil winding 2, and confine it within the winding space, thereby preventing the coil winding 2 from falling off and ensuring the stability of the structure.

[0049] Furthermore, a number of terminals 13 are symmetrically arranged at both ends of the skeleton 1, and the terminals 13 are integrally formed with the skeleton 1. In this embodiment, the skeleton 1 is made of bakelite, which is a thermosetting material with high stability and is not easily deformed due to changes in temperature or humidity. This stability ensures that the transformer skeleton 1 can maintain its original shape and size during long-term use, thereby ensuring the performance and reliability of the transformer; at the same time, it also has excellent insulation performance, and its voltage resistance can usually reach about 10KV / mm. This insulation ensures that the transformer skeleton 1 can work safely in a high-voltage environment and prevent problems such as current leakage or short circuit. In this embodiment, the terminals 13 are assembled during the skeleton 1 manufacturing process, and the terminals 13 are directly integrally formed with the skeleton 1, which has high production efficiency, low cost, and a more stable structure, reducing the subsequent assembly of the terminals 13.

[0050] Furthermore, an insulating paper 6 is provided between the magnetic core 3 and the terminal 13. The insulating paper 6 is arranged in a ring-shaped structure, and the two annular baffles 12 are plugged into the insulating paper 6. In this embodiment, the insulating paper 6 provides electrical isolation between the magnetic core 3 and the terminal 13, preventing current from flowing directly between the two components, helping to prevent short circuits and current leakage, thereby protecting the safe operation of circuits and equipment. At the same time, the insulating paper 6 has a ring-shaped structure. During installation, the hollow structure in the middle can be directly passed through the magnetic core 3, making installation convenient.

[0051] Furthermore, the magnetic core 3 is configured as a one-piece ferrite structure. Ferrite materials perform well in high-frequency applications, with high magnetic permeability and low core 3 losses. At the same time, they can effectively concentrate and conduct magnetic fields, meaning they can achieve the same performance in a smaller volume, helping to reduce the size of inductors or transformers while maintaining or improving performance.

[0052] Furthermore, the fixing clamp 5 is configured as an integrally molded structure made of SUS-301 stainless steel. SUS-301 stainless steel has excellent elasticity, which means that the fixing clamp 5 can maintain a stable clamping force during use and is not easily deformed or loosened. At the same time, SUS-301 stainless steel has high strength and can withstand large mechanical stresses, ensuring the durability and reliability of the fixing clamp 5.

[0053] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A transformer for an offshore platform, characterized in that: include: A frame, wherein the frame is provided with a through hole along its axial direction; A coil winding, the coil winding being wound around the outer side surface of the frame; There are two magnetic cores, each of which includes a plug-in portion and a main frame. The plug-in portions of the two magnetic cores are respectively inserted along the two ends of the jack, and the main frames of the two magnetic cores are connected to each other to form a rectangular frame. NOMEX paper is wound around the outside of the coil winding, the NOMEX paper is filled between the coil winding and the main frame, and the NOMEX paper abuts against the inner side of the main frame; A fixing clip is installed on the outside of the two magnetic cores, and the fixing clip is used to clamp the two magnetic cores.

2. The transformer for an offshore platform according to claim 1, characterized in that: The fixing clamp includes a main body plate and clamping plates symmetrically arranged on both sides of the main body plate, and the two clamping plates respectively clamp the outer sides of the two magnetic cores.

3. The transformer for an offshore platform according to claim 2, characterized in that: The two clamping plates are tilted toward the inner side of the fixing clamp, and the magnetic core is used to fit the outer side of the clamping plates and to form a groove that abuts against the end of the clamping plates.

4. The transformer for an offshore platform according to claim 2, characterized in that: The main body plate is attached to one side of the rectangular frame, and the main body plate covers the opening on one side of the rectangular frame.

5. The transformer for an offshore platform according to claim 4, characterized in that: Two annular baffles are symmetrically provided at both ends of the frame, and a winding space for winding the coil winding is formed between the two annular baffles.

6. The transformer for an offshore platform according to claim 5, characterized in that: A plurality of terminals are symmetrically arranged at both ends of the frame, and the terminals are integrally formed with the frame.

7. The transformer for an offshore platform according to claim 6, characterized in that: An insulating paper is further provided between the magnetic core and the terminal. The insulating paper is provided in a circular structure, and the two annular baffles are plugged into the insulating paper.

8. The transformer for an offshore platform according to claim 1, characterized in that: The magnetic core is configured as an integrally formed ferrite structure.

9. The transformer for an offshore platform according to claim 1, characterized in that: The frame is configured as a bakelite integrally formed structure.

10. The transformer for an offshore platform according to claim 1, characterized in that: The fixing clip is configured as an integrally formed structure made of SUS-301 material.

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