A reactor coil
By designing a combination structure of inner and outer protective covers and protective sleeves on the reactor coil, the problem of inconvenient welding of reactor coil breakage is solved, enabling rapid disassembly and simplified welding operations, thus improving work efficiency and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU WANDA HEAVY IND CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-06-23
AI Technical Summary
Reactor coils are prone to breakage after prolonged use, and removing the insulating tape wrapped around the coils in the existing technology is time-consuming and laborious, causing inconvenience to the welding work.
A reactor coil was designed with an outer protective sleeve structure consisting of an inner protective cover, a first 'arc' protective cover, and a second 'arc' protective cover. The connection between the annular protrusion and the fixing sleeve enables quick disassembly and installation, simplifying the welding operation.
It improves the efficiency and ease of operation of reactor coil welding, and can be reused repeatedly, making it environmentally friendly and efficient.
Smart Images

Figure CN224400187U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reactor technology, specifically to a reactor coil. Background Technology
[0002] Reactors, also called inductors, are widely used in circuits. Due to the electromagnetic induction effect, they possess inductance, which helps to resist changes in current. When a conductor carries current, it generates a magnetic field within the space it occupies; therefore, all current-carrying conductors have inductance in a general sense. However, the inductance of a long, straight conductor carrying current is relatively small, and the magnetic field it produces is weak. Therefore, practical reactors are made by winding wire into a solenoid, called air-core reactors. Sometimes, to give this solenoid a larger inductance, an iron core is inserted, called an iron-core reactor. Reactance is divided into inductive reactance and capacitive reactance. A more scientific classification is that inductors and capacitors are collectively called reactors. However, because inductors were developed first and were called reactors, the term "capacitor" now refers to a capacitive reactance, while "reactor" specifically refers to an inductor.
[0003] During long-term use, reactor coils often crack, requiring welding to repair the cracks. However, before welding the cracked reactor coil, the insulating tape wrapped around it needs to be removed. Because the insulating tape is wrapped very tightly, removing it is time-consuming and laborious, causing inconvenience to the workers.
[0004] Therefore, we propose a reactor coil to solve the problems mentioned above. Utility Model Content
[0005] The purpose of this utility model is to solve the aforementioned technical problems.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a reactor coil, comprising a coil body wound in a spiral, wherein an inner protective cover is provided inside the coil body; an outer protective sleeve is provided outside the coil body, and the outer protective sleeve is composed of a first "arc-shaped" protective cover and a second "arc-shaped" protective cover; an mounting sleeve is fixed on the second "arc-shaped" protective cover, and the first and last ends of the coil body are respectively fitted inside the mounting sleeve.
[0007] Furthermore: the top and bottom of the inner protective cover are respectively fixed with "annular" protrusions along the circumferential direction; the top and bottom edges of the first "arc" protective cover are respectively fixed with first "arc" protrusions along the circumferential direction; the top and bottom of the second "arc" protective cover are respectively equidistantly provided with second "arc" protrusions along the circumferential direction; and the first "annular" protrusions, the first "arc" protrusions and the second "arc" protrusions are connected by the same fixing sleeve.
[0008] Furthermore, the fixing sleeve has a plurality of mounting holes along the circumferential direction, and the first "annular" protrusion, the "arc" protrusion and the second "arc" protrusion are respectively provided with through holes that cooperate with the mounting holes, and the internal threads of the mounting holes are fitted with fixing bolts that cooperate with the through holes.
[0009] Furthermore, sealing gaskets are fixed at the connection points of the inner protective cover and the first "arc-shaped" protective cover, and at the connection points of the inner protective cover and the second "arc-shaped" protective cover, and the sealing gaskets are made of rubber material.
[0010] Furthermore, the inner protective cover, the first "arc-shaped" protective cover, the second "arc-shaped" protective cover, and the mounting sleeve are all made of insulating material.
[0011] The beneficial effects of this utility model are:
[0012] This invention features an inner protective cover inside the coil body and a first "arc-shaped" protective cover and a second "arc-shaped" protective cover outside the coil body. When welding a broken reactor coil, the inner protective cover, the first "arc-shaped" protective cover, and the second "arc-shaped" protective cover can be quickly disassembled. Compared with traditional insulating tape, this invention is more efficient, simpler to operate, and can be reused, promoting environmental protection. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0014] Figure 2 This is an exploded structural diagram of the present invention;
[0015] Figure 3 This is a cross-sectional structural diagram of the present invention.
[0016] The names corresponding to each mark in the diagram:
[0017] 1. Coil body; 2. Inner protective cover; 201. First "annular" protrusion; 3. First "arc" protective cover; 301. First "arc" protrusion; 4. Second "arc" protective cover; 401. Second "arc" protrusion; 5. Mounting sleeve; 6. Fixing sleeve. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.
[0019] A reactor coil includes a coil body 1, with the middle part of the coil body 1 being spiral-shaped and the two ends of the coil body 1 being vertical and parallel to each other.
[0020] An inner protective cover 2 is provided on the inner side of the coil body 1, and an outer protective sleeve is provided on the outer side of the coil body 1. The outer protective sleeve is assembled from a first "arc-shaped" protective cover 3 and a second "arc-shaped" protective cover 4. When the inner protective cover 2, the first "arc-shaped" protective cover 3 and the second "arc-shaped" protective cover 4 are closed together, the space formed by the first "arc-shaped" protective cover 3 and the second "arc-shaped" protective cover 4 in the spiral winding part in the middle of the coil body 1 plays a role in protecting the coil body 1. Mounting sleeves 5 are fixed at the two corners of the protective cover 4, and the first and last ends of the coil body 1 pass through the mounting sleeves 5 to connect with electrical components.
[0021] In detail: The inner protective cover 2 has annular protrusions 201 fixed along the circumferential direction at its top and bottom edges; the first arc-shaped protective cover 3 has first arc-shaped protrusions 301 fixed along the arc direction at its top and bottom edges; the second arc-shaped protective cover 4 has second arc-shaped protrusions 401 fixed at its top and bottom edges. The arrangement of these protrusions allows for easy fastening of the inner protective cover 2, the first arc-shaped protective cover 3, and the second arc-shaped protective cover 4, facilitating quick disassembly of these components and enabling welding or repair of aging parts of the coil body. This provides convenience for workers. When the "annular" protrusion 201 closes with the first "arc" protrusion 301 and the second "arc" protrusion 401 respectively, it is fastened by the fixing sleeve 6. More specifically, the fixing sleeve 6 has several mounting holes 601 along the circumferential direction, and the first "annular" protrusion 201, the first "arc" protrusion 301 and the second "arc" protrusion 401 are respectively provided with through holes (not shown in the figure). The fixing bolt passes through the mounting holes 601 and the mounting holes on the first "arc" protrusion 301 or the second "arc" protrusion 401 in sequence and is threadedly connected to the threaded hole on the first "annular" protrusion 201, thereby achieving the function of fastening and preventing the inner protective cover 2, the first "arc" protective cover 3 and the second "arc" protective cover 4 from falling off during use, and has strong stability.
[0022] It should be noted that the inner protective cover 2, the first "arc-shaped" protective cover 3, the second "arc-shaped" protective cover 4, and the mounting sleeve 5 are all made of insulating materials to avoid electrical conductivity and thus prevent potential safety hazards.
[0023] If the coil body 1 is damaged after long-term use and needs to be welded: First, loosen several fixing bolts so that they can be removed from the through hole and mounting hole 601 in sequence. Then, the fixing sleeve 6 can be removed from the "annular" protrusion, the "annular" protrusion 301 and the second "arc" protrusion 401. In this way, the inner protective cover 2, the first "arc" protective cover 3 and the second "arc" protective cover 4 can be removed from the coil body 1 respectively, so that the damaged parts of the coil body 1 can be welded. This makes the operation convenient.
Claims
1. A reactor coil, comprising a coil body (1) wound in a spiral, characterized in that: The coil body (1) is provided with an inner protective cover (2); the coil body (1) is provided with an outer protective sleeve, and the outer protective sleeve is composed of a first "arc-shaped" protective cover (3) and a second "arc-shaped" protective cover (4); an installation sleeve (5) is fixed on the second "arc-shaped" protective cover (4), and the first and last ends of the coil body (1) are respectively fitted inside the installation sleeve (5).
2. A reactor coil according to claim 1, characterized in that: The top and bottom of the inner protective cover (2) are respectively fixed with a first "annular" protrusion (201) along the circumferential direction. The top and bottom edges of the first "arc" protective cover (3) are respectively fixed with a first "arc" protrusion (301) along the circumferential direction. The top and bottom of the second "arc" protective cover (4) are respectively equidistant from each other along the circumferential direction with a second "arc" protrusion (401). The first "annular" protrusion (201), the first "arc" protrusion (301) and the second "arc" protrusion (401) are connected by the same fixing sleeve (6).
3. A reactor coil according to claim 2, characterized in that: The fixing sleeve (6) has a plurality of mounting holes (601) along the circumferential direction. The first "annular" protrusion (201), the "arc" protrusion (301) and the second "arc" protrusion (401) are respectively provided with through holes that cooperate with the mounting holes. The mounting holes (601) are threaded with fixing bolts that cooperate with the through holes.
4. A reactor coil according to claim 3, characterized in that: Sealing gaskets are fixed at the connection between the inner protective cover (2) and the first "arc" protective cover (3), and at the connection between the inner protective cover (2) and the second "arc" protective cover (4), and the sealing gaskets are made of rubber material.
5. A reactor coil according to claim 4, characterized in that: The inner protective cover (2), the first "arc" protective cover (3), the second "arc" protective cover (4) and the mounting sleeve (5) are all made of insulating material.