Tapping section winding device without exciting transformer

Abstract

The invention discloses a tapping section winding device of a non-excitation transformer, and relates to the technical field of winding devices, the tapping section winding device comprises a winding column, winding outer plates and connecting plugs, a tapping section mechanism comprises a U-shaped groove, the winding outer plates are installed at the two ends of the outer wall of the winding column, multiple sets of connecting plugs are installed on the outer walls of the winding outer plates, and the U-shaped groove is formed in the U-shaped groove. And a U-shaped groove is formed in the outer wall of the wrapping post. The tapping section mechanism is installed, in order to adjust voltage, many copper wires are wasted, for example, a tapping winding of + / -2 gears needs to be manufactured, the voltage deviation requirement needs to be met, the voltage requirement is met through the combination of parallel winding of two wires, one turn less winding of a certain section and parallel winding of two wires, transposition and one turn less winding of a certain section at present, materials are saved, and the cost is reduced. The cost is directly reduced, during winding, the wires are directly clamped into the U-shaped grooves, naturally keep parallel arrangement and do not intersect, and the wires are just clamped and fixed due to the depth of the U-shaped grooves.

Description

Technical Field

[0001] This invention relates to the field of winding device technology, specifically to a tap section winding device for a non-excitation transformer. Background Technology

[0002] With the continuous development of my country's power transmission projects and the increasing capacity of the power grid, coupled with the country's vigorous promotion of large-capacity power generation projects in recent years, more and more generator-free transformers are being used in these projects. This increased use of generator-free transformers has led to significant differences in the rated voltage ratios of the two transformer windings. It is well known in the transformer industry that different rated voltage ratios can result in different voltage deviations. To ensure these deviations meet standard requirements, the appropriate number of winding turns is often selected during transformer design. However, this design often necessitates adjusting the number of turns to meet voltage deviation requirements, resulting in wasted transformer material costs. In today's highly competitive market, cost control is crucial for enterprise competitiveness. Therefore, addressing this problem within the industry has become a challenging issue that needs to be resolved.

[0003] Patent document CN209785720U discloses an integrated small transformer winding structure, which includes "a winding post, a first side baffle, and a second side baffle. A first winding groove and a second winding groove are formed on the winding post. A first winding group and a second winding group are wound in the first winding groove and the second winding groove, respectively. A third winding group is also wound in the first winding groove. The third winding group is superimposed on the first winding group. The first winding group, the second winding group, and the third winding group all include multiple layers of coils. An insulating tube is sleeved on the outermost winding of each layer of coils. The windings of the first winding group, the second winding group, and the third winding group all include a conductor and an insulating sleeve sleeved on the conductor. In this way, its structural design is ingenious and reasonable, avoiding the safety hazards of short circuit connection due to damage to the enameled wire or breakdown due to high voltage problems. It achieves insulation of the winding group, avoids leakage of the transformer, and effectively ensures the safety and stability of the transformer."

[0004] However, the integrated small transformer winding structure described in the aforementioned published literature mainly focuses on effectively ensuring the safety and stability of the transformer, making it inconvenient to adopt new winding wiring methods to save costs.

[0005] In view of this, it is necessary to develop a segmentation mechanism, which will enable the use of new winding and wiring methods to save costs. Summary of the Invention

[0006] The purpose of this invention is to provide a tap section winding device for an unexcited transformer, so as to solve the technical problem mentioned in the background art of enabling the tap section winding device for an unexcited transformer to have a cost-saving function.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a tapping winding device for a non-excitation transformer, comprising: a winding post, a winding outer plate and a connector, wherein the outer wall of the winding post is provided with a tapping mechanism, and the tapping mechanism adopts a novel winding and wiring method to save costs; The splitting mechanism includes a U-shaped groove, and winding outer plates are installed at both ends of the outer wall of the winding post. Multiple sets of plug connectors are installed on the outer wall of the winding outer plates, and the outer wall of the winding post is provided with a U-shaped groove.

[0008] Preferably, the inner wall of the U-shaped groove is provided with an anti-wear mechanism, which is used to protect the wire and the winding post.

[0009] Preferably, the anti-wear mechanism includes an upper rubber pad and a lower rubber pad, and the inner wall of the U-shaped groove is provided with an upper rubber pad and a lower rubber pad.

[0010] Preferably, the inner wall of the U-shaped groove is provided with a fitting groove, and the inner wall of the fitting groove is fitted with a first Velcro fastener.

[0011] Preferably, the outer walls of the upper and lower rubber pads are fitted with a second Velcro strap.

[0012] Preferably, an upper semi-circular pad is installed on the outer wall of the upper rubber pad.

[0013] Preferably, a lower semi-circular pad is installed on the outer wall of the lower rubber pad.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention saves costs by installing a tapping mechanism and adopting a new type of winding wiring. As is well known in the transformer industry, different rated voltage ratios may result in different voltage deviations. In order to meet the standard requirements for voltage deviation, the appropriate number of winding turns is often selected when designing the transformer to meet the voltage deviation requirements. Such a design often requires adjusting more turns to meet the voltage deviation, resulting in a waste of transformer material costs. This invention improves upon the previous method, which wasted a lot of copper wire to adjust the voltage. Now, two wires are wound in parallel, and a certain section is "wound one turn less". By using the combination of "two wires wound in parallel + transposition + one turn less in a certain section", the voltage requirements are met with fewer total turns, saving materials and directly reducing costs. The depth of the U-shaped groove is just right to hold the wire and fix it. 2. This invention protects the wire and winding post by installing an anti-wear mechanism. Existing methods, where the wire is wound in contact with the U-shaped groove for extended periods, can lead to wear inside the groove or on the wire itself. Therefore, this invention needs improvement. Firstly, the upper rubber pad and upper semi-circular pad form the upper half of the U-shaped groove, while the lower rubber pad and lower semi-circular pad form the lower half. These two sets are moved into the U-shaped groove and installed using a second and first Velcro fastener. The rubber material provides protection, preventing the wire from directly contacting the inside of the U-shaped groove and causing wear, thus improving protection during winding. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of the winding device of the present invention; Figure 2 This is a schematic diagram of the front structure of the U-shaped groove of the present invention; Figure 3 This is a schematic diagram of the front structure of the upper rubber pad of the present invention.

[0016] In the diagram: 1. Winding post; 2. Winding outer plate; 3. Connector; 4. U-shaped groove; 5. Upper rubber pad; 6. Lower rubber pad; 7. Fitting groove; 8. First Velcro; 9. Second Velcro; 10. Upper half-arc pad; 11. Lower half-arc pad. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] Please see Figure 1 and Figure 2A tapping winding device for a non-excitation transformer includes: a winding post 1, a winding outer plate 2, and connectors 3. The outer wall of the winding post 1 is equipped with a tapping mechanism, which adopts a novel winding arrangement method to save costs. The tapping mechanism includes a U-shaped groove 4. The outer walls of the winding post 1 are fitted with winding outer plates 2 at both ends, and multiple sets of connectors 3 are installed on the outer walls of the winding outer plates 2. The outer wall of the winding post 1 is equipped with a U-shaped groove 4. In the transformer industry, it is well known that different rated voltage ratios may result in different voltage deviations. To ensure that the voltage deviation meets standard requirements, a suitable number of winding turns is often selected during transformer design to meet the voltage deviation requirements. However, this design often requires adjusting the number of turns to meet the voltage deviation, resulting in a waste of transformer material costs. Therefore, this is improved. The tapping winding of a non-excitation transformer is like a "dimming switch for an adjustable desk lamp." Just as a desk lamp has "brighter" and "dimmer" settings, a transformer tapping winding has "higher voltage" settings. The dimming of a desk lamp is achieved through resistance, while the voltage regulation of a transformer relies on the number of turns in the winding (more turns result in higher voltage; fewer turns result in lower voltage). Previously, adjusting the voltage wasted a lot of copper wire. For example, to create a ±2-level tap winding (5 levels), voltage deviation requirements needed to be met (e.g., the voltage error for each level could not exceed 1%). The old method involved winding a sufficient number of turns for each level separately. For example, to meet the requirements for 5 levels, 30 turns of copper wire might be needed. However, many of these turns were simply "to compensate for the deviation," wasting materials (copper wire accounts for more than 30% of the transformer cost). The new method involves winding two wires in parallel, with one section having one less turn. This combination of "two wires wound in parallel + transposition + one less turn in a section" meets the voltage requirements with fewer total turns, saving materials. For example, to create a ±2-level (5 levels) transformer, a total of 23 turns are needed (7 fewer turns than before). The steps are as follows: Step 1: Wind two wires side-by-side. After winding, "swap" their positions. Take two copper wires (called "wire A" and "wire B") and wind them side-by-side on the winding machine. First, wind the first section (H1): wind 6 turns (a full turn). After winding, "swap the positions of wire A and wire B" (for example, originally wire A was on the left and wire B was on the right, after the swap, wire A is on the right and wire B is on the left). This is called "entanglement swapping," and its purpose is to make the "electromagnetic environment" of the two wires more uniform (avoiding one wire always being in a "strong magnetic field area" and the other always being in a "weak magnetic field area"), reducing losses. Step 2: After swapping positions, continue winding, "winding one less turn" in a certain segment. After swapping, wires A and B continue winding the second segment (H2): this time, wind 5 turns (one less turn than the first segment). This "one less turn" is the key to saving materials. After winding, draw two "trigger joints" (such as "joint 2" and "joint 4") from the first segment, and draw one "trigger joint" ("joint 6") from the second segment. Step 3: Repeat "winding → swapping" to complete all segments, and wind the third segment (H3): wind the two wires 6 more turns (full turns), and then swap positions.Wrap the fourth section (H4): After transposition, wrap 6 turns (full turn). Lead out "Connector 1" and "Connector 3" from the third section, and "Connector 5" from the fourth section. Fourth step: Connect the taps in series to obtain 5 voltage levels. Now you have 6 taps (1, 2, 3, 4, 5, 6). Connect them as follows to obtain 5 voltage levels: Connector 5 + Connector 6 → -2 level (lowest voltage); Connector 4 + Connector 5 → -1 level; Connector 3 + Connector 4 → 0 level (normal voltage); Connector 2 + Connector 3 → +1 level; Connector 1 + Connector 2 → +2 level (highest voltage). For example, previously, to meet 5 levels, 30 turns were needed; now, using "two wires in parallel + one less turn in a certain section," only 23 turns are needed, saving 7 turns of copper wire. This cumulatively saves a lot of copper wire, directly reducing costs. Furthermore, when winding outside the winding post 1, the wires are prone to "crossing and creeping," resulting in uneven wire arrangement at the junction. Subsequent adjustments to reposition the wires require a lot of time for wire management. On the surface of the winding post 1 (e.g., a cylindrical plastic / metal post), 2-3 parallel U-shaped grooves 4 are cut (the groove spacing corresponds to the spacing of the junction wires; for example, when two wires are wound in parallel, the groove spacing is equal to twice the wire diameter). During winding, the wires are directly inserted into the U-shaped grooves 4, naturally maintaining a parallel arrangement and preventing crossing. The depth of the U-shaped grooves 4 is just right to hold the wires (e.g., wire diameter 1mm, groove depth 0.8mm), securing the wires.

[0021] Please see Figure 2 and Figure 3 A tapping winding device for a non-excitation transformer, wherein the inner wall of the U-shaped groove 4 is provided with an anti-wear mechanism to protect the conductor and the winding post 1. The anti-wear mechanism includes an upper rubber pad 5 and a lower rubber pad 6. The inner wall of the U-shaped groove 4 is provided with an upper rubber pad 5 and a lower rubber pad 6, and the inner wall of the U-shaped groove 4 is provided with a fitting groove 7. A first Velcro 8 is installed on the inner wall of the fitting groove 7. A second Velcro 9 is installed on the outer wall of the upper rubber pad 5 and the lower rubber pad 6. An upper semi-circular pad 10 is installed on the outer wall of the upper rubber pad 5, and a lower semi-circular pad 11 is installed on the outer wall of the lower rubber pad 6. Existing wire bodies Prolonged contact and winding within the U-shaped groove 4 can lead to wear inside the groove or on the wire itself. Therefore, improvements are needed. First, the upper rubber pad 5 and the upper semi-circular pad 10 form the upper half of the U-shaped groove 4, while the lower rubber pad 6 and the lower semi-circular pad 11 form the lower half. These two sets are then moved into the U-shaped groove 4 and installed using the second Velcro 9 and the first Velcro 8. This utilizes rubber material for protection, preventing the wire from directly contacting the interior of the U-shaped groove 4 and causing wear, thus improving protection during winding.

[0022] Working principle: The tap winding of a non-excitation transformer previously wasted a lot of copper wire to adjust the voltage. For example, to make a tap winding with ±2 taps and meet the voltage deviation requirements, the old method was to wind a sufficient number of turns for each tap. For example, to meet 5 taps, it might require winding 30 turns of copper wire. However, many of these turns were actually extra "to make up for the deviation," wasting materials. Now, two wires are wound in parallel, with one turn less in a certain section. By using a combination of "two wires wound in parallel + transposition + one turn less in a certain section," the voltage requirements are met with fewer total turns, saving materials and directly reducing costs. Furthermore, when winding outside the winding post 1, the wires are prone to "crossing and creeping," resulting in an uneven arrangement of the wires in the tap section. The previous method of repositioning the wires took a lot of time to manage. The wires are directly inserted into the U-shaped groove 4, naturally maintaining a parallel arrangement without crossing. However, the existing method of winding the wires in the U-shaped groove 4 for a long time can cause wear inside the U-shaped groove 4 or wear on the wires themselves. Therefore, this needs to be improved. First, the upper rubber pad 5 and the upper half-arc pad 10 form the upper part of the U-shaped groove 4, and the lower rubber pad 6 and the lower half-arc pad 11 form the lower part of the U-shaped groove 4. These two sets are then moved into the U-shaped groove 4 and installed using the second Velcro 9 and the first Velcro 8. The use of rubber material for protection prevents the wires from directly contacting the inside of the U-shaped groove 4 and causing wear, thus improving the protection during winding.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tapping section winding device for a non-excitation transformer, characterized in that, include: The winding post (1), the winding outer plate (2), and the plug (3) are provided. The outer wall of the winding post (1) is provided with a segmentation mechanism. The segmentation mechanism adopts a new winding and wiring method to save costs. The splitting mechanism includes a U-shaped groove (4), and a winding outer plate (2) is installed at both ends of the outer wall of the winding post (1). Multiple sets of plug connectors (3) are installed on the outer wall of the winding outer plate (2), and the outer wall of the winding post (1) is provided with a U-shaped groove (4).

2. The tapping section winding device for a non-excitation transformer according to claim 1, characterized in that: The inner wall of the U-shaped groove (4) is provided with an anti-wear mechanism, which is used to protect the wire and the winding post (1).

3. The tapping section winding device for a non-excitation transformer according to claim 2, characterized in that: The anti-wear mechanism includes an upper rubber pad (5) and a lower rubber pad (6), and the inner wall of the U-shaped groove (4) is provided with an upper rubber pad (5) and a lower rubber pad (6).

4. The tapping section winding device for a non-excitation transformer according to claim 1, characterized in that: The inner wall of the U-shaped groove (4) is provided with a fitting groove (7), and the inner wall of the fitting groove (7) is fitted with a first Velcro (8).

5. The tapping section winding device for a non-excitation transformer according to claim 3, characterized in that: The outer walls of the upper rubber pad (5) and the lower rubber pad (6) are fitted with a second Velcro strap (9).

6. The tapping section winding device for a non-excitation transformer according to claim 3, characterized in that: The outer wall of the upper rubber pad (5) is fitted with an upper semi-circular pad (10).

7. The tapping section winding device for a non-excitation transformer according to claim 3, characterized in that: The lower rubber pad (6) has a lower semi-circular pad (11) installed on its outer wall.

Images