Coil block fixing system for transformers and transformers

Abstract

A coil block fixing system (30) for a transformer includes a coil block body to be coupled to a coil (19) of a transformer, and a support plate coupled to the upper surface (23) of the opposite coil block body (10) on the lower surface (24) of the coil block body (10). The coil block fixing system (30) further includes two or more rods (3) coupled to the upper surface (21) of the opposite support plate (1) on the lower surface (22) of the support plate (1) to set a load on the support plate (1) toward the coil block body (10). The support plate (1) and the coil block body (10) are formed to be geometrically aligned with each other, one having at least one recess (13, 14) and the other having at least one protrusion (9, 16) extending into the corresponding recess (13, 14) to form a movement limiter for each of the translation and / or rotation of the support plate (1) relative to the coil block body (10).

Description

Technology Field

[0001] The present disclosure relates to a coil block fixing system for a transformer and a corresponding transformer. Background Technology

[0002] Transformers are installed, for example, in wind power generation facilities and may be subjected to instantaneous accelerations due to high loads that may occur during operation, transportation, etc. Document EP 3 817 015 A1 discloses a coil block for an electric transformer. The coil block is configured to support at least one coil winding in the electric transformer. The coil block comprises a first element having a first clamping surface and at least one support surface for contacting at least one coil winding, and a second element having a fastening means and a second clamping surface for restricting rotation of the coil block by contacting the first clamping surface.

[0003] References CN 217 181 983 U, JP 2004 207330 A and CN 106 298 198 A disclose additional arrangements of transformers or their components. The problem to be solved

[0004] Extreme loading conditions must be addressed to contribute to the longer lifespan and reliable operation of transformers and their windings. Accordingly, the objective of the present invention is to provide a system for a transformer that enables it to withstand such harsh operating conditions.

[0005] Accordingly, the present invention aims to provide a coil block fixing system for a transformer that contributes to a longer service life and stable and reliable operation of the transformer. means of solving the problem

[0006] According to an embodiment, a coil block fixing system for a transformer comprises a coil block body having a bottom surface configured to be coupled to the coil of the transformer. The coil block fixing system further comprises a support plate having a bottom surface coupled to the top surface of the coil block body opposite to the bottom surface of the coil block body. The coil block fixing system further comprises at least two rods coupled to the top surface of the support plate opposite to the bottom surface of the support plate to set a load on the support plate toward the coil block body. The support plate and the coil block body are formed to be geometrically aligned with each other, such that at least one of the support plate and the coil block body comprises one or more recesses, and the other of the support plate and the coil block body comprises at least one protrusion extending into the corresponding recess of the support plate or the coil block body. The protrusion within the recess forms a respective movement limiter to counteract translation and / or rotation of the support plate relative to the coil block body.

[0007] In a coil block fixing system, the support plate further includes a first lateral recess formed on the side surface of the support plate, and the coil block body includes a corresponding protrusion forming a lateral movement limiter extending into the lateral recess of the support plate.

[0008] The support plate further comprises a second lateral recess formed on the lateral side surface of the support plate opposite to the first lateral recess. The coil block body comprises an additional corresponding protrusion forming an additional lateral movement limiter extending into the second lateral recess of the support plate. Accordingly, the support plate has a substantially rectangular outer shape having four outer edges or corners, and the support plate, comprising the first and second lateral recesses opposite each other, has a substantially H-shape with respect to the planar view on the upper surfaces.

[0009] By using the described fixing system, it is possible to implement a transformer capable of withstanding acceleration due to high loads occurring during operation, transportation, etc. The fixing system provides a specific design of the coil block body that aligns with the support plate on the top, which allows for an advantageous configuration with particularly high mechanical stability of the transformer in terms of compensating for inevitable movement.

[0010] The support plate preferably comprises a substantially rectangular or cuboidal shape having rounded edges and / or corners, except for one or more recesses and / or protrusions. A specific configuration of the support plate can advantageously counteract unwanted translational and / or rotational movement of the support plate relative to the coil block body.

[0011] According to a further embodiment of the coil block fixing system, the coil block body includes a protruding body wall that forms an additional lateral movement limiter adjacent to the inner edge of the support plate. This limiting wall may be formed on the inner edge of the coil block body with respect to the assembled state, for example, when the coil block fixing system is attached to the circular coil of a transformer. The protruding body wall can reliably counteract undesirable translational movement of the support plate toward the center. Additionally, the protruding body wall in contact with the adjacent edge of the support plate counteracts undesirable rotational movement.

[0012] Alternatively or additionally, the support plate may include a lateral movement limiter formed on the side of the support plate extending into a lateral recess of the coil block body, for example, formed on the upper surface or wall of the coil block body, or formed on a protruding wall of the coil block body. In particular, such a lateral movement limiter can reliably suppress undesirable rotation of the support plate around a rotation axis that may be substantially parallel to the longitudinal axis of the elongated rod. Additionally, such a lateral movement limiter can counteract undesirable translational movement in an oriented direction restricted by the contour of the recess of the coil block body.

[0013] Alternatively or additionally, the support plate may include a lower movement limiter formed on the lower surface of the support plate that extends into the upper recess of the coil block body formed on the upper surface of the coil block body. In particular, this lower movement limiter can reliably counteract unwanted translation of the support plate in a plane substantially perpendicular to the aforementioned axis of rotation. Additionally, this lower movement limiter can counteract undesirable rotation in the aforementioned plane and also in a plane transverse thereto. One or more protrusions forming the limiters may be formed as a single piece, particularly with the support plate or the coil block body.

[0014] According to a further embodiment, the coil block fixing system comprises at least two spring elements, each of which is coupled to an associated rod, so that each rod interacts with at least one spring element, and a rod set on a support plate is provided with a certain flexibility with respect to the mounting direction from the coil block body to the rods. This configuration provides an advantageous compromise between the high stability and flexibility of the transformer in terms of inevitable movements.

[0015] According to a further embodiment, the rods are each formed as threaded pins, and the coil block fixing system further comprises two or more nuts configured to engage with each associated threaded pin. The rods set on the support plate due to spring elements as well as the nuts associated with the threaded pins are adjustable and fixable by nuts screwed onto the threaded pins. For example, the nuts are screwed onto the threaded pins so that the nuts are positioned between the upper surface of the support plate and one or more spring elements.

[0016] According to a further embodiment, the coil block fixing system further comprises two or more positioning elements, at least one positioning element being coupled to each rod, and is arranged between an associated nut and a spring element with respect to the longitudinal direction of the corresponding rod. The positioning element forms a support for the one or more spring elements attached to or coupled to the associated rod. Additionally or alternatively, the positioning element may form a fixing for an adjusted nut configured to prevent loosening of the load on the support plate and the set nut positioning.

[0017] According to additional embodiments, spring elements are formed as spring washers that surround an associated rod. The spring washers can be realized in a cost-effective manner as elastic metal rings that provide predetermined flexibility in a coil block fixing system. The spring washers may also be referred to as disc springs.

[0018] According to a further embodiment, the coil block fixing system further comprises two or more sliding guiders, at least one sliding guider being coupled to each rod so that the associated spring element can slide along the longitudinal direction of the rod by the sliding guiders. The sliding guiders may be formed as respective sleeves positioned on and surrounding the associated rod. These sleeves are arranged between the rod and the spring washer to guide up and down along the longitudinal axis of the corresponding rod and provide low-resistance sliding. The sliding guider may be formed as a single piece together with the positioning element described above to form a sleeve having a disc-shaped support surface, and the sleeve may include a type of T-shaped tube with respect to cross-section.

[0019] According to a further embodiment, the coil block fixing system additionally comprises three or more rods and corresponding spring elements. The rods are coupled to the upper surface of the support plate to set a load on the support plate toward the coil block body. Three or more spring elements are coupled to the associated rods so that each rod provides a respective load to the support plate with a certain flexibility along the mounting direction from the coil block body to the rods. The three rods realize three-point contact with the support plate and can favorably affect the stability and flexibility of the coil block fixing system and the corresponding transformer. Additionally, the three rods and their corresponding spring washers or spring elements may provide the same or different local loads to the support plate. Different local loads may be realized by using different spring elements and / or different numbers of spring elements having different materials or elastic properties. This applies similarly to a configuration having two rods and associated spring elements.

[0020] Alternatively, the coil block fixing system comprises only one rod and at least one corresponding spring element coupled to the upper surface of the support plate to set a load on the support plate toward the coil block body. To provide enhanced stability and withstand high loads, two, three or more rods are preferred.

[0021] In addition to the preferred U-shape or H-shape, the support plate may include a trapezoidal or triangular shape, a pentagonal shape, or a polygonal shape having sharp and / or rounded edges and / or corners, depending on the intended implementation inside or in the transformer. The rods may be fixed to the support plate closer to the outer edge of the support plate than to the inner edge of the support plate based on the mounted state of the coil block fixing system coupled to the annular coil of the transformer. Based on this operating state, the inner edge of the support plate faces the center of the coil, and the outer edge faces outwardly away from the center.

[0022] The coils or windings of the transformers are generally formed in a circular shape, thus including a center and an outer region. The aforementioned configuration can favorably contribute to the stability and flexibility of the coil block fixing system and can even favorably affect the operation of the transformer despite inevitable vibrational movements. The specific positions of the rods and their respective local loads on the support plate can be customized for the intended use and application of the associated transformer, for example, so that a higher level of stabilization is set up further outward than inward. Alternatively, the rods can be arranged further inward than outward, or substantially in the center region of the support plate.

[0023] According to a further embodiment, the support plate comprises a T-shape having a lower protrusion and lateral plate portions based on a cross-section along the mounting direction. The lateral plate portions extend laterally outward from the protrusion and contact the upper surface of the coil block body. Accordingly, the lateral portions of the support plate can reliably resist undesirable rotation around a rotation axis that may be parallel to the extrusion direction or main extension plane of the support plate.

[0024] According to an embodiment, the transformer comprises a coil for converting voltage and a coil block fixing system according to any one of the prior claims coupled to the coil. Generally, the transformer comprises two or more coils, and the coil block fixing system may be coupled to both coils. As a result of the transformer comprising an embodiment of the coil block fixing system as described above, the features and characteristics of the coil block fixing system are also disclosed with respect to the transformer, and vice versa.

[0025] The present disclosure recognizes that a transformer that may be installed in a wind power generation facility may be subjected to instantaneous acceleration due to mechanical and / or electromechanical loads that may occur during operation, transportation, etc. Mechanical shocks may arise, for example, from the sudden stopping of wind turbine blades or from resonant frequencies associated with geometric and material configurations. Electromechanical shocks may arise in terms of frequency requirements that must be met in terms of associated amplitudes or other operating parameters of the transformer. These high-loading conditions highlight the inherent structural vulnerability of conventional stationary systems. Accordingly, the object of the present invention is to improve the ability of the transformer to withstand such harsh operating conditions.

[0026] This disclosure also recognizes that the aforementioned problems are primarily concentrated on structural weaknesses of the standard coil block itself, which is fragile and prone to structural failure. This can lead to disintegration and, furthermore, to a potential degradation of the transformer's performance and reliability. Another critical issue that may occur during testing is the tendency of nuts to loosen under displacements induced by extreme shocks and vibrations. These vulnerabilities highlight the need for a more robust coil-block design capable of withstanding the harsh conditions specified by customer test requirements.

[0027] The described coil block fixing system can address the aforementioned adverse effects and disadvantages. The coil block fixing system can be realized with an H-shaped flange fixing section, which allows for stable and reliable operation of the transformer due to specific design options that contribute to improving the spring washers and overall robustness, particularly in terms of shock and sine beat load requirements.

[0028] Preferably, through interaction with specific rods and associated spring elements, the support plate and coil block body of a specific shape are specifically engineered to withstand high acceleration shocks. When integrated into or attached to a transformer, the coil block fixing system can contribute to preventing structural damage and performance issues under extreme loading conditions. The H-shaped support plate can reliably provide mechanical stability and shock resistance for the coil block fixing system and the corresponding transformer. Preferably formed of spring washers, the spring elements can reliably absorb the thermal expansion of the transformer's windings or coils while maintaining a specially finely tuned, advantageous stiffness to withstand dynamic loads. Thus, the overall resilience and performance of the transformers can be improved, even in terms of high acceleration shocks. The configurations of the described coil block fixing system can provide an advantageous compromise between the need for a rigid coil block to support the transformer's windings or coils subjected to extreme loads and, at the same time, providing sufficient space for the thermal expansion of the windings or coils. The coil block body may comprise a bulk structure having some protrusions and / or recesses of itself, which functions as an interface to the support plate and the assembled rods and spring washers. The rods form pins to which an appropriate preload can be applied to the coils of the transformer. The combination of the preload and the stiffness of the spring washers can favorably contribute to the stability and robustness required of the transformer.

[0029] The described coil block fixing system can contribute to an enhanced life or service life, allow for easy mounting, and pass various rigorous requirements, including sine beat tests based on increasing amplitudes while meeting fixed frequency requirements set by the customer. Additionally, the coil block fixing system passes mechanical resonance checks due to the counter-damping set up by the described configurations.

[0030] Exemplary embodiments are described below with the help of schematic diagrams and reference numerals. In the drawings: Brief explanation of the drawing

[0031] FIG. 1 illustrates an embodiment of a coil block fixing system for a transformer in a perspective view, and FIG. 2 shows a side cross-sectional view of the components of the coil block fixing system of FIG. 1, and FIG. 3 illustrates an embodiment of a coupling structure comprising a plurality of coil block fixing systems coupled to a transformer. Specific details for implementing the invention

[0032] The attached drawings are included to provide further understanding. Identical drawing numbers indicate elements or components having the same function. Where elements or components correspond to one another in terms of their function in different drawings, their description is not repeated for each of the following drawings. For clarity, elements may not appear with their corresponding reference symbols in all drawings as much as possible.

[0033] FIG. 1 illustrates a perspective view of an embodiment of a coil block fixing system (30) for a transformer. The coil block fixing system (30) comprises a coil block body (10) having a bottom surface (24) and an upper surface (23) opposite to the bottom surface (24). The bottom surface (24) is configured to be coupled to the coil (19) of the transformer by a contact element (20), such as a rubber pad or silicone rubber.

[0034] The coil block fixing system (30) additionally includes a support plate (1) having a bottom surface (22) and an upper surface (21) opposite to the bottom surface (22). The bottom surface (22) is coupled to the upper surface (23) of the coil block body (10). The support plate (1) has a specific H-shape with respect to the planar view on the upper surface (21) along the z-direction. The support plate (1) is specifically configured and geometrically formed to be aligned with the coil block body (10) and includes rounded edges and corners.

[0035] The support plate (1) includes a first lateral recess (13) formed on the side surface of the support plate (1) and a second lateral recess formed on the lateral side surface of the support plate (1) opposite to the first lateral recess (13). The coil block body (10) includes corresponding protrusions forming a lateral movement limiter (16) that extends into the associated lateral recess (13) of the support plate (1). The protrusions or movement limiters and corresponding recesses are formed to resist translation and / or rotation of the support plate (1) relative to the coil block body (10).

[0036] Additional lateral movement limiters are formed by a protruding wall (15) at the inner edge of the coil block body (10). The protruding body wall (15) is adjacent to the inner edge of the support plate (1) and can reliably resist unwanted translational movement of the support plate (1) toward the center in the x-direction. Additionally, the protruding body wall (15) in contact with the adjacent edge of the support plate (1) resists unwanted rotational movement. The protrusions and / or recesses of the support plate (1) and the coil block body (10) are designed so that the support plate (1) fits tightly within the coil block body (10).

[0037] The coil block fixing system (30) further comprises two rods (3) coupled to the upper surface (21) of the support plate to set a load on the support plate toward the coil block body. The rods (3) can be firmly fixed to the support plate (1) by welding. The specific positions of the rods (3) and their respective local loads, which are summed to form a predetermined total load on the support plate (1), can be customized for the intended use and application of the coil block fixing system (30), and for its implementation inside or in the associated transformer.

[0038] The coil block fixing system (30) additionally comprises four spring elements formed as spring washers (2), two of which surround the associated rod (3). The rods (3) and the spring washers (2) are configured to set a predetermined load on the support plate (1) with a certain flexibility with respect to the mounting direction from the coil block body (10) to the rods (3). According to the coordinate system illustrated in FIGS. 1 through 4, the mounting direction represents the vertical direction or the z-direction. Also, the z-direction is the same as the longitudinal direction of the rods (3). The x-direction and y-direction represent horizontal directions and consequently define a horizontal plane (span).

[0039] The rods (3) are each formed as threaded pins, and corresponding nuts (5) are configured to align with the threaded pins, so that the rods set on the support plate (1) are adjustable and fixed by nuts (5) screwed onto the threaded pins. The nuts (5) are screwed onto the threaded pins so that the nuts (5) are positioned between the upper surface (21) of the support plate (1) and the two spring washers (2) above. With respect to the z-direction, each positioning element (4) is coupled to the rods (3) between the associated nut (5) and the spring washer (2) (for better illustration only, one rod (3) is illustrated without additional elements on the washers (2)). The positioning element (4) forms a support for the two spring washers (2) and also forms a reliable fixing part for the adjusted nut (5) to prevent loosening of the adjusted rod and set nut position for the support plate (1).

[0040] On the side of the washers (2) opposite the positioning element (4), a weld seam (17) and a rod sleeve (7) are exemplified to surround each rod (3) extending through the coupling structure (26) of the transformer (see FIG. 3). The sleeve (7) is secured to the coupling structure (26) by the weld seam (17), restricts the allowed movement of the washers (2) in the z-direction, and enables stable movement guidance of the rods (3) and the corresponding coil block fixing system (30) interacting with the coupling structure (26) of the transformer. The rod sleeve (7) restricts the tilting of the associated rod (3) and positioning element (4), while still allowing their translation in the vertical direction to be free. Thus, precise setting of the rods relative to the support plate (1) is made possible by the elements described above attached to or coupled to each rod (3).

[0041] The support plate (1) may additionally include one or more lateral protrusions on its outer side surface. These lateral protrusions may form additional lateral movement limiters that extend into corresponding lateral recesses formed in the coil block body (10). The lateral movement limiters counteract undesirable rotation of the support plate (1) relative to the coil block body (10) in the xy plane. Additionally, the lateral movement limiters may counteract undesirable translational movement of the support plate (1) along the y-direction.

[0042] Additionally, as illustrated in FIG. 2, the support plate (1) includes a protrusion forming a lower movement limiter (9) on a lower surface (22) that extends into an upper recess (14) of the coil block body (10) formed on the upper surface (23) of the coil block body (10). The lower movement limiter (9) may be formed on the lower surface (22) in a center area, or alternatively outwardly from the center area. Additionally, there may be additional protrusions on the lateral side and / or lower surface (22) of the support plate (1).

[0043] According to FIG. 2, the support plate (1) has a T shape with respect to the exemplified cross section in the yz plane viewed in the x-direction. The coil block body (10) has a kind of U shape with respect to the exemplified cross section in the yz plane viewed in the x-direction at the position of the lateral protrusions (16). The support plate (1) includes lateral plate portions (8) extending laterally outward from the center area or protrusion (9), each of which contacts the top surface or at least the upper surface (23) of the coil block body (10) outside the recess (14). Accordingly, the lateral plate portions (8) can advantageously counteract undesirable rotation of the support plate (1) relative to the coil block body (10) in the yz plane. Thus, each lateral plate portion (8) counteracts the lifting of another lateral plate portion (8) on the side opposite to the coil block body (10).

[0044] As illustrated in FIGS. 1 and 2, the coil block body (10) may form a frame in sections around an H-shaped support plate (1). The protruding wall (15) and lateral protrusions (16) secure the support plate (1) on three sides in its assembled position. Additionally, there may be additional protrusions extending into additional recesses on the outer sides.

[0045] According to the described embodiments, the coil block fixing system (30) may be formed of the following components: a coil block body (10), threaded pins or rods (3), spring washers (2), nuts (5), a locking mechanism (implemented, for example, by a positioning element (4) and a welding seam (17)), as well as a sliding guide (27) for a rod sleeve (7) and washers (2), the sliding guide may be implemented by an additional sleeve surrounding the rod (3) so that it is arranged between the rod (3) and the washers (2) to allow low resistance movement of the washers (2) up and down in the z-direction to a predetermined degree. Preferably, the positioning element (4) and the sliding guide (27) are formed as a sliding guide support sleeve implemented as a single piece that allows vertical translations of the spring washers (2), and can be compressed by vertical vibration of the coil (19), by vertical thermal expansion of the coil (19), and during the clamping step when setting an appropriate compressive force for the coil (19).

[0046] The coil block body (10) itself may be composed of a bulk insulating material that contacts the coils (19) through rubber pads (20). The coil block body (10) includes the shape of an arched passage through which a screen (18) element extends. The coil block body (10) also incorporates fins for electrical clearance that implement a creepage structure (25). A specific pattern may be formed on the top surface or upper surface (23) of the coil block body (10) to accommodate a pin support structure implemented by rods (3). Each of the rods (3) may have a standard shape, for example, cylindrical. Preferably, the threaded rods (3) are preferably firmly welded onto the support plate (1).

[0047] The screen (18) increases the insulation between the coils (19). When the voltage between two coils (19) is relatively high, a discharge or electric arc may occur, melting and damaging the coils (19). For this reason, a minimum distance between the coils (19) is ensured, and the greater the distance, the greater the insulation and the lower the probability of electric arcs. The use of the screen (18) allows for increased insulation between the coils (19), and consequently reduces the distance between the coils (19). This enables the setup of more compact transformers and smaller external coils (19), thus reducing material usage and thereby lowering costs.

[0048] A sliding guide (27) for spring washers (2) is mounted on rods (3) and moves freely vertically up to a predetermined range. Spring washers (2) are installed around an associated sliding guide sleeve (27) and can move vertically together with it. The described elements, in particular the number and arrangement of spring washers (2), depend on the required stiffness and displacement of the assembly and the intended use of the coil block fixing system (30) for the transformer.

[0049] The nuts (5) allow for fine adjustment of the preload of the spring washers (2) and affect their interaction with the support plate (1) and the coil block body (10). Each nut (5) serves the dual purpose of adjusting the preload and fixing the coil block body (10) in place. The positioning element (4) can be implemented as a rigid member or a specific spring element introduced to prevent loosening of each nut (5) during excitation, and ensures the integrity of the entire assembly under dynamic conditions.

[0050] FIG. 3 illustrates an embodiment for coupling a plurality of coil block fixing systems (30) to a transformer. The rods (3) of each coil block fixing system (30) are coupled to each other and / or to the transformer or transformer tank by one or more coupling elements or coupling structures (26) that implement a clamping profile, for example, U-shaped metal supports.

[0051] As described, the embodiments illustrated in FIGS. 1 through 4 represent exemplary embodiments of an improved coil block fixing system (20) and a corresponding transformer; thus, they do not constitute a complete list of all embodiments according to possible arrangements. Actual arrangements of the fixing system (20) and / or transformer may differ from the embodiments illustrated in the drawings. Explanation of the symbols

[0052] 1 support plate 2 spring washers 3 bars 4 Positioning Elements 5 nuts 7 bar sleeves 8 Lateral plate section 9 Lower protrusion / Movement limiter 10 coil block body Upper wall of the 12-block main body 13 Lateral recess of the support plate 14. Upper recess of the block body 15 protruding main body wall 16 Lateral protrusions / Movement limiters 17 Welding Seam 18 screen elements 19 coils 20 contact elements 21 Upper surface of the support plate 22 Bottom surface of the support plate 23 Upper surface of the block body Bottom surface of the 24-block body 25 Creeping structure of the block body 26 Coupling structure 27 Sliding Guide 30 coil fixing system

Claims

Claim 1 As a coil block fixing system (30) for a transformer: - a coil block body (10) having a bottom surface (24) configured to be coupled to a coil (19) of the transformer; - a support plate (1) having a bottom surface (22) coupled to the upper surface (23) of the coil block body (10) opposite to the bottom surface (24) of the coil block body (10); - comprising at least two rods (3) coupled to the upper surface (21) of the support plate (1) opposite to the bottom surface (22) of the support plate (1) to set a load on the support plate (1) toward the coil block body (10), wherein the support plate (1) and the coil block body (10) are formed to be geometrically coordinated with each other, such that at least one of the support plate (1) and the coil block body (10) includes at least one recess (13, 14), and among the support plate (1) and the coil block body (10) Another includes at least one protrusion (9, 16) extending into a corresponding recess (13, 14) of the support plate (1) or the coil block body (10), forming a movement limiter for each of the translation and / or rotation of the support plate (1) relative to the coil block body (10); the support plate (1) includes a first lateral recess (13) formed on a side surface of the support plate (1); the coil block body (10) includes a corresponding protrusion forming a lateral movement limiter (16) extending into the lateral recess (13) of the support plate (1); the support plate (1) includes a second lateral recess formed on a lateral surface of the support plate (1) opposite to the first lateral recess (13); and the coil block body (10) includes an additional corresponding protrusion forming an additional lateral movement limiter (16) extending into the second lateral recess of the support plate (1).A coil block fixing system (30) for a transformer, wherein the support plate (1) comprises an angled outer shape including first and second lateral recesses (13) opposite each other, and the support plate (1) substantially comprises an H-shape with respect to the planar view on the upper surface (21) of the support plate (1). Claim 2 A coil block fixing system (30) for a transformer, wherein the coil block body (10) comprises a protruding body wall (15) forming an additional lateral movement limiter adjacent to the inner edge of the support plate (1) based on the mounted state of the coil block fixing system when the inner edge of the support plate (1) faces the coil. Claim 3 A coil block fixing system (30) for a transformer, wherein the support plate (1) includes a protrusion forming a lower movement limiter (9) formed on the lower surface (22) of the support plate (1) that extends into the upper recess (14) of the coil block body (10) formed on the upper surface (23) of the coil block body (10). Claim 4 A coil block fixing system (30) for a transformer, wherein, in any one of claims 1 to 3, the coil block fixing system (30) comprises at least two spring elements (2), one spring element (2) is coupled to one rod (3) and the other spring element (2) is coupled to another rod (3), so that a rod set on the support plate (1) is provided with a certain flexibility with respect to the mounting direction from the coil block body (10) to the rods (3). Claim 5 In claim 4, the rods (3) are each formed with threaded pins, and the coil block fixing system (30) further comprises at least two nuts (5) configured to align with each associated threaded pin, so that the rod set on the support plate (1) due to the rods (3) and the spring elements (2) is adjustable and fixable by the nuts (5) screwed onto the threaded pins, coil block fixing system (30) for a transformer. Claim 6 In claim 5, the nuts (5) are screw-fastened onto the threaded pins and the nuts (5) are arranged between the upper surface (21) of the support plate (1) and one or more spring elements (2), forming a coil block fixing system (30) for a transformer. Claim 7 In claim 5 or 6, the coil block fixing system (30) comprises at least two positioning elements (4), one positioning element (4) being coupled to one rod (3) and the other positioning element (4) being coupled to another rod (3) and arranged between an associated nut (5) and a spring element (2) with respect to the longitudinal direction of the corresponding rod (3), forming a support for the spring element (2) and / or a fixing for the adjusted nut (5), a coil block fixing system (30) for a transformer. Claim 8 A coil block fixing system (30) for a transformer, wherein, in combination with claim 4, in any one of claims 1 to 7, the spring elements (2) are formed of spring washers surrounding the associated rod (3). Claim 9 In combination with claim 4, in any one of claims 1 to 8, the coil block fixing system (30) comprises at least two sliding guides (27), one sliding guide (27) is coupled to one rod (3) and the other sliding guide (27) is coupled to another rod (3), so that the associated spring element (2) is slidable along the longitudinal direction of the rod (3) by the sliding guides (27), a coil block fixing system (30) for a transformer. Claim 10 In any one of claims 1 to 9, the support plate (1) comprises an angled shape having one or more inner and / or outer edges, and the rods (3) are fixed to the support plate (1) closer to the outer edge of the support plate (1) than to the inner edge of the support plate (1) based on the mounted state of the coil block fixing system (30) coupled to the annular coil (19) of the transformer, wherein the inner edge of the support plate (1) faces the center of the coil (19), a coil block fixing system (30) for a transformer. Claim 11 A coil block fixing system (30) for a transformer, wherein, in any one of claims 1 to 10, the support plate (1) comprises a T shape having a lower protrusion (9) and lateral plate portions (8) based on a cross-section following the mounting direction, and the lateral plate portions (8) extend laterally outward from the protrusion (9) and contact the upper surface (23) of the coil block body (10). Claim 12 A transformer comprising: - a coil (19) for converting voltage, and - at least one coil block fixing system (30) according to any one of claims 1 to 11 coupled to said coil (19).

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