Method for inserting iron in ring iron yoke of delta electric reactor

Abstract

The present application belongs to the technical field of reactor iron core, and relates to a method for inserting iron core into a middle ring yoke of a product-shaped reactor. A pair of arc-shaped insulation side plates are fixed at the length direction edge of an arc-shaped insulation bottom plate; a second arc-shaped insulation baffle is fixed at one end of the arc-shaped insulation bottom plate; a silk hole is opened at the other end of the arc-shaped insulation bottom plate, and an epoxy glass silk rod is screwed into the silk hole of the arc-shaped insulation bottom plate; a through hole is opened at the height direction side of the first arc-shaped insulation baffle, the epoxy glass silk rod penetrates through the through hole of the first arc-shaped insulation baffle, and the upper end of the epoxy glass silk rod is fixed by an epoxy nut; the first arc-shaped insulation baffle is turned to open, silicon steel sheets are sequentially pushed into the opening horizontally, the iron core is inserted, and after the insertion of the iron core is completed, a magnetic lifting mechanism is used to adsorb and combine the formed silicon steel sheets into a complete reactor middle ring yoke. The three groups of silicon steel sheets are inserted into the iron core in advance, and the three groups of silicon steel sheets are taken out as a whole after being fixed and shaped, so that the product quality and efficiency are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of reactor iron insertion, and specifically relates to a middle ring yoke iron insertion method for a delta-shaped reactor. Background Art

[0002] As a type of three-phase oil-immersed core shunt reactor, the "delta"-shaped core reactor is structurally characterized in that based on the centers of the upper and lower iron yokes, the three-phase core legs are distributed in a "delta"-shaped structure at an included angle of 120° between each other. The iron yoke of the delta-shaped reactor is divided into three parts: an inner ring iron yoke, a middle ring iron yoke and an outer ring iron yoke. The inner and outer ring iron yokes are made of wound silicon steel sheets, and the middle ring iron yoke is formed by stacking short silicon steel sheets.

[0003] The middle ring iron yoke of the delta-shaped reactor is divided into three sections due to the placement of three cylinders, and each section is formed by stacking silicon steel sheets of different lengths. The existing stacking method of silicon steel sheets is from the inside to the outside, and the three sections are stacked respectively. The three cylinders of the middle ring iron yoke of the delta-shaped reactor need to be placed and fixed in advance to position the three sections of the middle ring iron yoke. During the stacking process of the middle ring iron yoke of the delta-shaped reactor, since the silicon steel sheets will eventually present an arc shape, an outward tension will be generated, which leads to the need to use straps for tightening while inserting iron during the entire stacking process. The efficiency of stacking in this process is relatively low. Tightening while inserting iron not only affects the stacking efficiency of the middle ring iron yoke, but also causes the silicon steel sheets to scrape against the cylinders, affecting the performance of the product. At present, there is no special iron insertion tooling dedicated for the middle ring iron yoke of the delta-shaped reactor. Contents of the Invention

[0004] In view of the above technical problems, the present invention provides a middle ring yoke iron insertion method for a delta-shaped reactor, and the technical solution adopted by the present invention is as follows:

[0005] The iron insertion method for the middle ring iron yoke of the reactor includes the following steps:

[0006] Step 1: Determine the inner and outer diameters of the arc-shaped insulating side plates and the arc-shaped insulating bottom plate according to the inner and outer diameters of the middle ring iron yoke, determine the height of the arc-shaped insulating side plates according to the sheet width of the silicon steel sheets of the middle ring iron yoke, and bond and fix a pair of arc-shaped insulating side plates to the edge positions in the length direction of the arc-shaped insulating bottom plate.

[0007] Step 2: Determine the outer diameters of the first arc-shaped insulating baffle and the second arc-shaped insulating baffle according to the outer diameter of the cylinder, and fixedly install the second arc-shaped insulating baffle at one end of the arc-shaped insulating bottom plate by means of bonding.

[0008] Step 3: Determine the position of the epoxy glass rod at the other end of the arc-shaped insulating bottom plate at the position where the cylinder is tangent to the outer diameter of the middle ring iron yoke, open a threaded hole at the corresponding position at the other end of the arc-shaped insulating bottom plate, screw the epoxy glass rod into the threaded hole of the arc-shaped insulating bottom plate, and the epoxy glass rod serves as the rotating shaft of the first arc-shaped insulating baffle.

[0009] Step 4: Based on the position of the epoxy glass wire rod on the arc-shaped insulating base plate, open a through hole on one side of the first arc-shaped insulating baffle in the height direction; the epoxy glass wire rod passes through the through hole of the first arc-shaped insulating baffle, and the upper end of the epoxy glass wire rod is tightened and fixed by an epoxy nut;

[0010] Step 5: When stacking the silicon steel sheets of the middle ring iron yoke, rotate to open the first arc-shaped insulating baffle, and push the silicon steel sheets horizontally inward from the opening to place the insert iron. After the iron is inserted, close the first arc-shaped insulating baffle to ensure that the silicon steel sheets are regularly arranged in the arc-shaped groove formed by the arc-shaped insulating base plate, a pair of arc-shaped insulating side plates, the first arc-shaped insulating baffle, and the second arc-shaped insulating baffle.

[0011] Step 6: Use a magnetic lifting mechanism to adsorb the shaped silicon steel sheet as a whole, lift out the shaped silicon steel sheet with the inserted iron, and install the shaped silicon steel sheet into place in one go. The three groups of shaped silicon steel sheets are combined to form a complete inner ring yoke of the reactor.

[0012] Preferably, the arc-shaped insulating side plate and the arc-shaped insulating base plate are made of laminated wood.

[0013] Preferably, the thickness of the arc-shaped insulating base plate is 50mm, and the thickness of the arc-shaped insulating side plate is 10mm.

[0014] Preferably, the first arc-shaped insulating baffle and the second arc-shaped insulating baffle are made of epoxy glass fiber board.

[0015] The beneficial effects of this invention are:

[0016] The present invention discloses a method for inserting steel plates into a triangular reactor. An arc-shaped groove, identical in shape to the central ring yoke, is designed. The silicon steel sheets of the central ring yoke are pre-formed within this arc-shaped groove. Three sets of silicon steel sheets are then placed in the arc-shaped groove for insertion. After fixing, the three sets of silicon steel sheets are removed as a whole and installed simultaneously. This method solves the problem of the silicon steel sheets rubbing against the cylinder due to tension, improving product quality and increasing the efficiency of stacking and inserting the silicon steel sheets. This insertion method is ingeniously designed, with a reasonable arc-shaped groove structure and easy manufacturing process, making it worthy of widespread application. Attached Figure Description

[0017] Figure 1 This is a top view of the ring yoke in a triangular reactor.

[0018] Figure 2 This is a flowchart illustrating the steps of the method for inserting the ring yoke into the reactor according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the arc-shaped insulating side plate, the arc-shaped insulating bottom plate, and the arc-shaped insulating baffle according to an embodiment of the present invention;

[0020] Among them, 1 is a cylinder, 2 is a central ring yoke, 3 is an arc-shaped insulating side plate, 4 is a first arc-shaped insulating baffle, 5 is an epoxy glass wire rod and an epoxy nut, 6 is an arc-shaped insulating base plate, and 7 is a second arc-shaped insulating baffle. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] like Figure 1 The image shown is a top view of the ring yoke in a triangular reactor. The circular ring yoke 2 is divided into three sections by cylinders 1. When stacking silicon steel sheets, three cylinders 1 are placed evenly along the circumference. During the stacking process, iron is inserted while straps are used to tighten the silicon steel sheets.

[0023] like Figure 2 The diagram shown is a flowchart illustrating the steps of the method for inserting the ring yoke into a reactor according to an embodiment of the present invention. The method for inserting the ring yoke into a reactor includes the following steps:

[0024] Step 1: Determine the inner and outer diameters of the arc-shaped insulating side plate 3 and the arc-shaped insulating base plate 6 based on the inner and outer diameters of the middle ring yoke 2. Determine the height of the arc-shaped insulating side plate 3 based on the width of the silicon steel sheet of the middle ring yoke 2. Adhere and fix a pair of arc-shaped insulating side plates 3 to the edge position along the length direction of the arc-shaped insulating base plate 6.

[0025] The arc-shaped insulating side plate 3 and the arc-shaped insulating base plate 6 are made of laminated wood. Laminated wood ensures that the silicon steel sheets will not be worn during the stacking and insertion process, and it is also low in cost and easy to process. The arc-shaped insulating base plate 6 is 50mm thick, and the arc-shaped insulating side plate 3 is 10mm thick. These dimensions not only meet the requirements for inserting the iron but also save materials, and the tooling itself is lightweight.

[0026] Step 2: Based on the outer diameter of the cylinder 1, determine the outer diameter of the first arc-shaped insulating baffle 4 and the outer diameter of the second arc-shaped insulating baffle 7, and fix the second arc-shaped insulating baffle 7 to one end of the arc-shaped insulating base plate 6 by adhesive bonding.

[0027] Step 3: Determine the position of the M12 epoxy glass wire rod at the other end of the arc-shaped insulating base plate 6 at the position where the outer diameter of the cylinder 1 and the middle ring yoke 2 are tangent. Open an M12 wire hole at the corresponding position at the other end of the arc-shaped insulating base plate 6, and screw the M12 epoxy glass wire rod into the M12 wire hole of the arc-shaped insulating base plate 6. The M12 epoxy glass wire rod serves as the rotation axis of the first arc-shaped insulating baffle 4.

[0028] Step 4: Based on the position of the M12 epoxy glass wire rod on the arc-shaped insulating base plate 6, a φ13 through hole is opened on one side of the first arc-shaped insulating baffle 4 along its height direction. The M12 epoxy glass wire rod passes through the φ13 through hole of the first arc-shaped insulating baffle 4, and the upper end of the M12 epoxy glass wire rod is tightened and fixed by an epoxy nut. The epoxy nut ensures the stability of the first arc-shaped insulating baffle 4 when it rotates. The first arc-shaped insulating baffle 4 has a structure similar to a single door, which can be opened and closed freely with the screw as the axis.

[0029] like Figure 3 The diagram shown is a structural schematic of the arc-shaped insulating side plate, arc-shaped insulating base plate, and arc-shaped insulating baffle of an embodiment of the present invention. The epoxy glass wire rod and epoxy nut 5 include an M12 epoxy glass wire rod and an epoxy nut.

[0030] The first arc-shaped insulating baffle 4 and the second arc-shaped insulating baffle 7 are made of epoxy glass fiber board with a thickness of 25mm. The outer diameter of the first arc-shaped insulating baffle 4 and the outer diameter of the second arc-shaped insulating baffle 7 are equal to the outer diameter of the cylinder 1. The advantages of epoxy glass fiber board are good strength and not easy to wear.

[0031] Step 5: When stacking silicon steel sheets in the middle ring yoke, rotate to open the first arc-shaped insulating baffle 4, and push the silicon steel sheets horizontally inward from the opening to place the insert iron. After the iron is inserted, close the first arc-shaped insulating baffle 4 to ensure that the silicon steel sheets are regularly arranged in the arc-shaped groove formed by the arc-shaped insulating base plate 6, a pair of arc-shaped insulating side plates 3, the first arc-shaped insulating baffle 4 and the second arc-shaped insulating baffle 7.

[0032] Step 6: Use a magnetic lifting mechanism to adsorb the shaped silicon steel sheet as a whole, lift out the shaped silicon steel sheet with the inserted iron, and install the shaped silicon steel sheet into place in one go. The three groups of shaped silicon steel sheets are combined to form a complete inner ring yoke of the reactor.

[0033] In the embodiments of the present invention, all technical features not described in detail are existing technologies or conventional technical means, and will not be repeated here.

[0034] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit them. The scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A method for inserting iron rings into the toroidal yoke of a reactor, characterized in that, Includes the following steps: Step 1: Determine the inner and outer diameters of the arc-shaped insulating side plate (3) and the arc-shaped insulating base plate (6) based on the inner and outer diameters of the middle ring yoke (2). Determine the height of the arc-shaped insulating side plate (3) based on the width of the silicon steel sheet of the middle ring yoke (2). Bond and fix a pair of arc-shaped insulating side plates (3) to the edge of the arc-shaped insulating base plate (6) along its length. Step 2: Based on the outer diameter of the cylinder (1), determine the outer diameter of the first arc-shaped insulating baffle (4) and the outer diameter of the second arc-shaped insulating baffle (7), and fix the second arc-shaped insulating baffle (7) to one end of the arc-shaped insulating base plate (6) by adhesive bonding. Step 3: Determine the position of the epoxy glass wire rod at the other end of the arc-shaped insulating base plate (6) at the position where the outer diameter of the cylinder (1) and the middle ring yoke (2) are tangent. Make a wire hole at the corresponding position at the other end of the arc-shaped insulating base plate (6) and screw the epoxy glass wire rod into the wire hole of the arc-shaped insulating base plate (6). The epoxy glass wire rod serves as the rotation axis of the first arc-shaped insulating baffle (4). Step 4: According to the position of the epoxy glass wire rod on the arc-shaped insulating base plate (6), open a through hole on one side of the height direction of the first arc-shaped insulating baffle (4); the epoxy glass wire rod passes through the through hole of the first arc-shaped insulating baffle (4), and the upper end of the epoxy glass wire rod is tightened and fixed by an epoxy nut. Step 5: When stacking silicon steel sheets in the middle ring iron yoke, rotate to open the first arc-shaped insulating baffle (4), and push the silicon steel sheets horizontally inward from the opening to place the insert iron. After the insert iron is completed, close the first arc-shaped insulating baffle (4) to ensure that the silicon steel sheets are regularly arranged in the arc-shaped groove formed by the arc-shaped insulating base plate (6), a pair of arc-shaped insulating side plates (3), the first arc-shaped insulating baffle (4) and the second arc-shaped insulating baffle (7). Step 6: Use a magnetic lifting mechanism to adsorb the shaped silicon steel sheet as a whole, lift out the shaped silicon steel sheet with the inserted iron, and install the shaped silicon steel sheet into place in one go. The three groups of shaped silicon steel sheets are combined to form a complete inner ring yoke of the reactor.

2. The method for inserting the ring yoke into the reactor according to claim 1, characterized in that, The arc-shaped insulating side plate (3) and the arc-shaped insulating base plate (6) are made of laminated wood.

3. The method for inserting the ring yoke into the reactor according to claim 2, characterized in that, The thickness of the arc-shaped insulating base plate (6) is 50 mm, and the thickness of the arc-shaped insulating side plate (3) is 10 mm.

4. The method for inserting the ring yoke into the reactor according to claim 1, characterized in that, The first arc-shaped insulating baffle (4) and the second arc-shaped insulating baffle (7) are made of epoxy glass fiber board.

Images