Structure and device for pressing iron core of electric reactor

Abstract

The utility model relates to an electric reactor iron core pressing structure and device, and the electric reactor iron core pressing structure comprises a pressing assembly which comprises a first pressing piece and a second pressing piece which are arranged at an interval, an iron core assembly is arranged between the first pressing piece and the second pressing piece, and the iron core assembly comprises an upper iron yoke, an iron core column and a lower iron yoke which are arranged in a stacked mode; the through hole assembly is arranged on the periphery of the iron core assembly, the through hole assembly penetrates through the first pressing piece and the second pressing piece, the fastening piece is arranged in the through hole assembly and penetrates through the through hole assembly, and the two ends of the fastening piece are both in threaded connection with fastening nuts. Due to the fact that the through hole assembly is arranged on the periphery of the iron core assembly and does not penetrate through the upper iron yoke, the iron core column and the lower iron yoke, a magnetic circuit of the contact face of the iron core column and the upper iron yoke / the lower iron yoke is not blocked, and equipment damage caused by local overheating due to the fact that the electromagnetic induction intensity of the contact face of the iron core column and the upper iron yoke / the lower iron yoke is too large is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of reactor core pressing, and particularly relates to a reactor core pressing structure and device. Background Art

[0002] A reactor, also called an inductor, is an electrical device that uses the self-inductance of a coil to store magnetic field energy or suppress current changes. It is widely used in high-voltage power grids. A reactor includes an upper yoke and a lower yoke arranged at intervals, as well as a core column and a coil. The core column is formed by stacking a plurality of core cakes between the upper yoke and the lower yoke. The coil is sleeved outside the core column. When current flows through the coil, electromagnetic excitation is applied to each core cake. This electromagnetic excitation easily causes an alternating magnetic attraction force to be generated between any two adjacent core cakes, resulting in elastic deformation of the core cakes and mechanical vibration of the reactor.

[0003] In related technologies, the reactor pressing structure passes a pull screw through the central axes of the upper yoke, each core cake, and the lower yoke in sequence, and two tightening nuts are threadedly connected to both ends of the pull screw to press the reactor. However, this reactor pressing structure is prone to the phenomenon of excessive local electromagnetic intensity and overheating, and the reactor is prone to damage. Summary of the Utility Model

[0004] Based on this, in view of the problem that the current reactor pressing structure is prone to damage, it is necessary to provide a reactor core pressing structure and device.

[0005] A reactor core pressing structure includes:

[0006] A pressing assembly, including a first pressing member and a second pressing member arranged at intervals in a first direction;

[0007] A core assembly, arranged between the first pressing member and the second pressing member. The core assembly includes an upper yoke, a core column, and a lower yoke stacked in sequence. The upper yoke is located between the first pressing member and the core column, and the central axis of the core column is parallel to the first direction; the core column is formed by stacking a plurality of core cakes;

[0008] A through-hole assembly, arranged on the outer periphery of the core assembly. The through-hole assembly sequentially penetrates the first pressing member and the second pressing member along the first direction;

[0009] A fastening assembly, including a fastener and a fastening nut. The fastener is arranged in the through-hole assembly and penetrates the through-hole assembly along the first direction. The fastening nut is threadedly connected to both ends of the fastener along the first direction.

[0010] In one embodiment, two of the fastening nuts are connected to one end of the fastener along the first direction away from the first pressing member;

[0011] Among the two fastening nuts, a side of one of the fastening nuts faces away from the first pressing member and contacts a side of the other fastening nut close to the first pressing member.

[0012] In one embodiment, the fastening assembly includes an elastic member, the elastic member is arranged on a side of the first pressing member away from the second pressing member, and a first through hole is provided on the elastic member;

[0013] One end of the fastener away from the second pressing member along the first direction is inserted into the first through hole.

[0014] In one embodiment, the elastic member includes a first elastic portion and a second elastic portion arranged along the first direction;

[0015] The first via hole penetrates the first elastic portion and the second elastic portion along the first direction.

[0016] In one embodiment, the fastening assembly includes a limiting member, and the limiting member includes a limiting sleeve and a limiting plate;

[0017] The limiting sleeve is arranged on a side of the first pressing member away from the second pressing member, and is sleeved on the outer side of the elastic member, and the dimension of the limiting sleeve along the first direction is smaller than the dimension of the elastic member along the first direction;

[0018] The limit plate is arranged on the side of the elastic member away from the first clamping member along the first direction. The limit plate can compress the elastic member along the first direction under the action of external force until it contacts the side of the limit sleeve away from the first clamping member. A second through hole is provided on the limit plate, and one end of the fastener away from the second clamping member along the first direction is passed through the second through hole.

[0019] In one embodiment, the fastening assembly includes an insulating pad, which is disposed between the first pressing member and the limiting sleeve and is sleeved on the outer side of the fastener.

[0020] In one of the embodiments, the reactor core compression structure includes a plurality of core assemblies arranged at intervals along a second direction, wherein the second direction is perpendicular to the first direction;

[0021] A plurality of through-hole components and a plurality of fastening components are disposed around the outer side of each of the core components, and each of the through-hole components penetrates the first pressing member and the second pressing member along the first direction;

[0022] A plurality of the fastening assemblies are arranged in one-to-one correspondence with a plurality of the through-hole assemblies, and the fasteners in each fastening assembly all penetrate through the corresponding through-hole assembly along the first direction, and fastening nuts are threadedly connected to both ends of each fastener along the first direction.

[0023] In one embodiment, each through-hole assembly includes a first through-hole and a second through-hole which are coaxially arranged and communicate with each other;

[0024] The first through-hole penetrates through the first pressing member along the first direction, the second through-hole penetrates through the second pressing member along the first direction, and the central axes of the first through-hole and the second through-hole are both parallel to the first direction;

[0025] The fasteners in each fastening assembly sequentially pass through the first through-hole and the second through-hole in the corresponding through-hole assembly, and insulating sleeves are arranged between the outer peripheral surface of each fastener and the hole wall of the corresponding first through-hole and the hole wall of the corresponding second through-hole.

[0026] In the reactor core pressing structure of this embodiment, since the through-hole assembly is on the outer periphery of the core assembly, the through-hole assembly sequentially penetrates through the first pressing member and the second pressing member along the first direction, the fastener penetrates through the through-hole assembly along the first direction, and fastening nuts are threadedly connected to both ends of the fastener along the first direction, the loading and unloading of the reactor core pressing structure is simple. The staff only needs to adjust the positions of the two fastening nuts on the fastener to reduce the distance between the first pressing member and the second pressing member in the first direction, so that the first pressing member and the second pressing member apply a pressing force along the first direction to the core assembly, and then the pressing force can be used to resist the vibration of the core assembly along the first direction during the operation of the reactor, and reduce the vibration amplitude of the reactor.

[0027] Compared with the traditional pressing structure, in which the fastener penetrates through the upper yoke, the core column and the lower yoke along the first direction, through-holes are provided on the contact surfaces between the core column and the upper yoke / lower yoke, and the magnetic path of the contact surface between the core column and the upper yoke / lower yoke is blocked by the through-holes, and the electromagnetic induction intensity at the through-holes is too high, which easily causes equipment damage due to local overheating. In the reactor core pressing structure of this embodiment, since the through-hole assembly is arranged on the outer periphery of the core assembly and does not penetrate through the upper yoke, the core column and the lower yoke, the magnetic path of the contact surface between the core column and the upper yoke / lower yoke is not blocked, and equipment damage caused by excessive electromagnetic induction intensity and local overheating at the contact surface between the core column and the upper yoke / lower yoke will not occur.

[0028] The present application also proposes a reactor core pressing device, including the aforementioned reactor core pressing structure.

[0029] The reactor core clamping device in this embodiment has a through-hole assembly on the outer periphery of the core assembly, and the through-hole assembly sequentially penetrates the first clamping member and the second clamping member along the first direction, and the fastener penetrates the through-hole assembly along the first direction. Both ends of the fastener along the first direction are threadedly connected with fastening nuts. Therefore, the reactor core clamping structure is simple to assemble and disassemble. The staff only needs to adjust the positions of the two fastening nuts on the fastener to reduce the spacing between the first clamping member and the second clamping member in the first direction so that the first clamping member and the second clamping member apply a clamping force along the first direction to the core assembly. The clamping force can be used to resist the vibration of the core assembly along the first direction when the reactor is working, thereby reducing the vibration amplitude of the reactor.

[0030] Compared with the traditional clamping device, the fastener penetrates the upper iron yoke, the iron core column and the lower iron yoke along the first direction, and the contact surface between the iron core column and the upper iron yoke / lower iron yoke is provided with a through hole, which blocks the magnetic path of the contact surface between the iron core column and the upper iron yoke / lower iron yoke. The electromagnetic induction intensity at the through hole is too large, which may easily cause equipment damage due to local overheating. In the reactor core clamping device in this embodiment, since the through hole component is arranged on the outer periphery of the core component, the through hole component does not penetrate the upper iron yoke, the iron core column and the lower iron yoke, so the magnetic path of the contact surface between the iron core column and the upper iron yoke / lower iron yoke is not blocked, and the equipment damage caused by local overheating due to the excessive electromagnetic induction intensity of the contact surface between the iron core column and the upper iron yoke / lower iron yoke will not occur.

[0031] In one of the embodiments, the reactor core pressing device comprises a sliding sleeve;

[0032] The outer periphery of the fastening nut threadedly connected to the end of the fastener away from the second pressing member in the reactor core pressing structure is sleeved with the sliding sleeve, the sliding sleeve is slidably connected to the corresponding fastening nut, and can move relative to the corresponding fastening nut along the first direction to push the limiting plate to move along the first direction toward the direction close to the first pressing member;

[0033] An opening is provided on the outer peripheral surface of the sliding sleeve, and the opening passes through the peripheral wall of the sliding sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the drawings required for use in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of the reactor core compression structure in one embodiment of the present application.

[0036] Figure 2 For Figure 1 The partial enlarged schematic view of the structure at position A in the reactor core pressing structure shown in the figure.

[0037] Figure 3 The structural schematic diagram of the reactor core pressing device in an embodiment of the present application.

[0038] Reference numerals:

[0039] Reactor core pressing device 1000;

[0040] Reactor core pressing structure 1100, pressing assembly 1110, first pressing member 1111, second pressing member 1112, core assembly 1120, upper yoke 1121, core column 1122, core cake 1122-1, lower yoke 1123, through-hole assembly 1130, first through-hole 1131, second through-hole 1132, fastening assembly 1140, fastener 1141, fastening nut 1142, adjustment hole 1142-1, elastic member 1143, first elastic part 1143-1, second elastic part 1143-2, first through-hole 1143-3, limiting member 1144, limiting sleeve 1144-1, limiting plate 1144-2, second through-hole 1144-3, insulating pad 1145, insulating sleeve 1150;

[0041] Sliding sleeve 1200, opening 1210;

[0042] Sliding rod 1300, sliding rod body 1310, sliding rod head 1320;

[0043] Hollow hydraulic cylinder 1400. Detailed implementation manners

[0044] To make the above objects, features and advantages of the present application more obvious and understandable, the following detailed description of the specific implementation manners of the present application will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0045] In the description of the present application, it should be understood that if such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0046] In addition, if such terms as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0047] In the present application, unless otherwise clearly specified and limited, if such terms as "mounted", "connected", "coupled", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "on" or "under" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0049] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0050] Please refer to Figures 1 to 3 , Figure 1 FIG. shows a schematic structural diagram of a reactor core pressing structure in an embodiment of the present application. A reactor core pressing structure 1100 provided in an embodiment of the present application includes: a pressing assembly 1110, a core assembly 1120, a through-hole assembly 1130, and a fastening assembly 1140. The pressing assembly 1110 includes a first pressing member 1111 and a second pressing member 1112 spaced apart in a first direction. The core assembly 1120 is disposed between the first pressing member 1111 and the second pressing member 1112. The core assembly 1120 includes an upper yoke 1121, a core column 1122, and a lower yoke 1123 stacked in sequence. The upper yoke 1121 is located between the first pressing member 1111 and the core column 1122. The central axis of the core column 1122 is parallel to the first direction. The core column 1122 is vertically stacked by a plurality of core cakes. The through-hole assembly 1130 is disposed on the outer periphery of the core assembly 1120. The through-hole assembly 1130 sequentially penetrates the first pressing member 1111 and the second pressing member 1112 in the first direction. The fastening assembly 1140 includes a fastener 1141 and a fastening nut 1142. The fastener 1141 is disposed in the through-hole assembly 1130 and penetrates the through-hole assembly 1130 in the first direction. Threaded fastening nuts 1142 are connected to both ends of the fastener 1141 in the first direction.

[0051] In the reactor core pressing structure 1100 of this embodiment, since the through-hole assembly 1130 is on the outer periphery of the core assembly 1120, the through-hole assembly 1130 sequentially penetrates the first pressing member 1111 and the second pressing member 1112 in the first direction, the fastener 1141 penetrates the through-hole assembly 1130 in the first direction, and threaded fastening nuts 1142 are connected to both ends of the fastener 1141 in the first direction, the reactor core pressing structure 1100 is simple to load and unload. The staff only needs to adjust the positions of the two fastening nuts 1142 on the fastener 1141 to reduce the distance between the first pressing member 1111 and the second pressing member 1112 in the first direction, so that the first pressing member 1111 and the second pressing member 1112 apply a pressing force in the first direction to the core assembly 1120, or adjust the magnitude of the pressing force, and then the pressing force can be used to resist the vibration of the core assembly 1120 in the first direction during the operation of the reactor, reducing the vibration amplitude of the reactor.

[0052] Compared with the conventional clamping structure (not shown), the fastener 1141 penetrates the upper iron yoke 1121, the core column 1122 and the lower iron yoke 1123 along the first direction, and the contact surface between the core column 1122 and the upper iron yoke 1121 / lower iron yoke 1123 is provided with a through hole, which blocks the magnetic path of the contact surface between the core column 1122 and the upper iron yoke 1121 / lower iron yoke 1123. The electromagnetic induction intensity at the through hole is too large, and it is easy to cause local overheating, which may cause equipment damage. The clamping structure 1100, since the through-hole component 1130 is arranged on the outer periphery of the core component 1120, the through-hole component 1130 does not penetrate the upper iron yoke 1121, the core column 1122 and the lower iron yoke 1123, the magnetic circuit of the contact surface between the core column 1122 and the upper iron yoke 1121 / lower iron yoke 1123 is not blocked, and the electromagnetic induction intensity of the contact surface between the core column 1122 and the upper iron yoke 1121 / lower iron yoke 1123 is too large, and local overheating will not occur, causing equipment damage.

[0053] See also Figure 1 and Figure 2 In some embodiments, two fastening nuts 1142 are connected to one end of the fastener 1141 away from the first clamping member 1111 along the first direction, and one of the two fastening nuts 1142 is away from the side of the first clamping member 1111 and contacts with the other fastening nut 1142 close to the side of the first clamping member 1111.

[0054] In this embodiment, by arranging that two fastening nuts 1142 are connected to one end of the fastener 1141 away from the first clamping member 1111 along the first direction, it is possible to prevent the threaded connection between the fastening nuts 1142 and the fastener 1141 from loosening, thereby ensuring the spacing between the first clamping member 1111 and the second clamping member 1112 in the first direction, maintaining the magnitude of the clamping force applied by the first clamping member 1111 and the second clamping member 1112 to the core assembly 1120 unchanged, and avoiding the clamping force from being reduced due to the loose connection between the fastening nuts 1142 and the fastener 1141.

[0055] In some embodiments, the fastener 1141 is a screw that extends along the first direction.

[0056] See also Figure 1 and Figure 2 In some embodiments, the fastening assembly 1140 includes an elastic member 1143, which is disposed on a side of the first clamping member 1111 away from the second clamping member 1112, and a first through hole 1143-3 is provided on the elastic member 1143, and one end of the fastener 1141 away from the second clamping member 1112 along the first direction is passed through the first through hole 1143-3.

[0057] In this embodiment, by disposing the elastic member 1143 on the side of the first pressing member 1111 away from the second pressing member 1112, there is a first through hole 1143-3 in the elastic member 1143, and one end of the fastener 1141 away from the second pressing member 1112 in the first direction is inserted through the first through hole 1143-3, so that the elastic member 1143 is clamped between the first pressing member 1111 and the fastening nut 1142 connected to the end of the fastener 1141 away from the second pressing member 1112. On the one hand, it is convenient for the staff to adjust the distance between the fastening nut 1142 connected to the end of the fastener 1141 away from the second pressing member 1112 and the first pressing member 1111, so that the elastic member 1143 undergoes elastic deformation until the elastic force generated by the elastic member 1143 reaches the required pressing force. During this process, the elastic force on the side of the elastic member 1143 close to the first pressing member 1111 pushes the first pressing member 1111 to move in the direction close to the iron core assembly 1120, so as to apply a pressing force towards the second pressing member 1112 to the iron core assembly 1120; the elastic force on the side of the elastic member 1143 away from the first pressing member 1111 pushes the fastening nut 1142 connected to the end of the fastener 1141 away from the second pressing member 1112 away from the first pressing member 1111, so that the fastening nut 1142 connected to the end of the fastener 1141 away from the first pressing member 1111 approaches the first pressing member 1111, and drives the second pressing member 1112 to move in the direction close to the iron core assembly 1120, thereby applying a pressing force towards the first pressing member 1111 to the iron core assembly 1120. On the other hand, since the elastic member 1143 has elasticity, it can resist external forces through elastic deformation and has a good buffering and shock absorption effect. Therefore, it can better absorb the vibration of the iron core assembly 1120 in the first direction when the reactor is working, so that the iron core assembly 1120 is always in the target pressing state, reducing the noise and vibration of the reactor.

[0058] Please refer to Figure 1 and Figure 2 , the elastic member 1143 includes a first elastic portion 1143-1 and a second elastic portion 1143-2 arranged along the first direction, and the first through hole 1143-3 penetrates the first elastic portion 1143-1 and the second elastic portion 1143-2 along the first direction.

[0059] In this embodiment, by setting the elastic member 1143 to include a first elastic portion 1143-1 and a second elastic portion 1143-2, and a first through hole 1143-3 penetrating the first elastic portion 1143-1 and the second elastic portion 1143-2 along a first direction, the fastener 1141 is inserted through the first through hole 1143-3 along the end of the first direction away from the second pressing member 1112. The first elastic portion 1143-1 and the second elastic portion 1143-2 are clamped between the first pressing member 1111 and the fastening nut 1142 connected to the end of the fastener 1141 away from the second pressing member 1112.

[0060] In some embodiments, both the first elastic portion 1143-1 and the second elastic portion 1143-2 are disc springs. By setting both the first elastic portion 1143-1 and the second elastic portion 1143-2 as disc springs, the contact area between the elastic member 1143 and the first pressing member 1111 can be increased. After the first elastic portion 1143-1 and the second elastic portion 1143-2 are compressed by the first pressing member 1111 and the fastening nut 1142 connected to the end of the fastener 1141 away from the second pressing member 1112, the elastic force generated can be evenly transmitted to the first pressing member 1111, and then evenly press every part on the iron core assembly 1120.

[0061] In some embodiments, the first elastic portion 1143-1 is located between the second elastic portion 1143-2 and the first pressing member 1111. The first elastic portion 1143-1 includes a plurality of first disc springs (not shown), and the plurality of first disc springs are stacked along the direction from the first pressing member 1111 to the second pressing member 1112; the second elastic portion 1143-2 includes a plurality of second disc springs (not shown), and the plurality of second disc springs are stacked along the direction from the second pressing member 1112 to the first pressing member 1111.

[0062] Please refer to Figure 1 and Figure 2 , in some embodiments, the fastening assembly 1140 includes a limiting member 1144. The limiting member 1144 includes a limiting sleeve 1144-1 and a limiting plate 1144-2. The limiting sleeve 1144-1 is arranged on the side of the first pressing member 1111 away from the second pressing member 1112 and sleeved on the outside of the elastic member 1143. The dimension of the limiting sleeve 1144-1 along the first direction is smaller than the dimension of the elastic member 1143 along the first direction. The limiting plate 1144-2 is arranged on the side of the elastic member 1143 away from the first pressing member 1111 along the first direction. The limiting plate 1144-2 can compress the elastic member 1143 along the first direction under the action of an external force until it contacts the side of the limiting sleeve 1144-1 away from the first pressing member 1111. A second through hole 1144-3 is provided on the limiting plate 1144-2, and the end of the fastener 1141 along the first direction away from the second pressing member 1112 is inserted through the second through hole 1144-3.

[0063] In this embodiment, by setting a limiting sleeve 1144-1 to be sleeved on the outside of the elastic member 1143, it is possible to prevent the elastic member 1143 from being displaced in a direction perpendicular to the first direction when the fastening nut 1142 connected to the end of the fastener 1141 away from the second clamping member 1112 compresses the elastic member 1143; by setting a limiting plate 1144-2 on the side of the elastic member 1143 away from the first clamping member 1111 along the first direction, the size of the limiting sleeve 1144-1 along the first direction is smaller than the size of the elastic member 1143 along the first direction, so that when the elastic member 1143 is not compressed, the side of the limiting sleeve 1144-1 away from the limiting sleeve 1144-1 and the limiting plate 1144-2 are not in contact with each other. There is a gap between the two parts, which makes it easy for the staff to adjust the maximum elastic deformation of the elastic member 1143 by controlling the size of the gap in the first direction, so as to adjust the elastic force generated by the elastic member 1143 and ensure that the core assembly 1120 is always in the target clamping state; by setting a second through hole 1144-3 on the limiting plate 1144-2, the end of the fastener 1141 away from the second clamping member 1112 along the first direction is passed through the second through hole 1144-3, so that the fastening nut 1142 connected to the end of the fastener 1141 away from the second clamping member 1112 can move toward the direction close to the first clamping member 1111, pushing the limiting plate 1144-2 to compress the elastic member 1143.

[0064] See also Figure 1 and Figure 2 In some embodiments, the fastening assembly 1140 includes an insulating pad 1145 , which is disposed between the first pressing member 1111 and the limiting sleeve 1144 - 1 , and is sleeved on the outer side of the fastener 1141 .

[0065] In this embodiment, by providing an insulating pad 1145, electrical connection can be prevented between the fastener 1141, the elastic member 1143, the limit member 1144 and the first clamping member 1111, thereby avoiding the formation of a closed loop in the reactor and causing problems such as increased loss and overheating.

[0066] See also Figure 1 and Figure 2, in some embodiments, the reactor core pressing structure 1100 includes a plurality of core components 1120 arranged at intervals in a second direction perpendicular to the first direction. A plurality of through-hole components 1130 and a plurality of fastening components 1140 are disposed around the outer side of each core component 1120. Each through-hole component 1130 penetrates through the first pressing member 1111 and the second pressing member 1112 in the first direction. The plurality of fastening components 1140 are arranged in one-to-one correspondence with the plurality of through-hole components 1130. The fastener 1141 in each fastening component 1140 penetrates through the corresponding through-hole component 1130 in the first direction, and fastening nuts 1142 are threadedly connected to both ends of each fastener 1141 in the first direction.

[0067] In this embodiment, by arranging a plurality of core components 1120 arranged at intervals in the second direction, and a plurality of through-hole components 1130 and a plurality of fastening components 1140 are disposed around the outer side of each core component 1120. On the one hand, each core component 1120 in the reactor core pressing structure 1100 can be pressed by a plurality of fastening components 1140, so as to realize the synchronous pressing of the plurality of core components 1120 in the reactor core pressing structure 1100, reduce the noise and vibration generated during the operation of the reactor, improve the operation performance of the reactor, and ensure the safe operation of the reactor in a complex environment with long-term vibration. On the other hand, each core component 1120 can be pressed by a plurality of fastening components 1140 in the circumferential direction of its own outer contour line, and finally the uniform pressing of each core component 1120 can be realized.

[0068] Please refer to Figure 1 and Figure 2 , in some embodiments, each through-hole component 1130 includes a first through-hole 1131 and a second through-hole 1132 that are coaxially arranged and communicate with each other. The first through-hole 1131 penetrates through the first pressing member 1111 in the first direction, and the second through-hole 1132 penetrates through the second pressing member 1132 in the first direction. The central axes of the first through-hole 1131 and the second through-hole 1132 are both parallel to the first direction. The fastener 1141 in each fastening component 1140 sequentially passes through the first through-hole 1131 and the second through-hole 1132 in the corresponding through-hole component 1130. An insulating sleeve 1150 is provided between the outer peripheral surface of each fastener 1141 and the hole walls of the corresponding first through-hole 1131 and the corresponding second through-hole 1132.

[0069] In this embodiment, by providing an insulating sleeve 1150 between the outer peripheral surface of each fastener 1141 and the hole walls of the corresponding first through-hole 1131 and the corresponding second through-hole 1132, it is possible to prevent electrical connection between each fastener 1141 and the first pressing member 1111 and the second pressing member 1112.

[0070] In some embodiments, the iron core column 1122 includes a plurality of iron core disks 1122-1 stacked along a first direction. The central axis of each iron core disk 1122-1 extends along the first direction, and the central axes of adjacent iron core disks 1122-1 are collinear.

[0071] Please refer to Figure 3 , Figure 3 which shows a schematic structural diagram of a reactor iron core pressing device in an embodiment of the present application. A reactor iron core pressing device 1000 provided in an embodiment of the present application includes the aforementioned reactor iron core pressing structure 1100.

[0072] In the reactor iron core pressing device 1000 of this embodiment, since the through-hole assembly 1130 is on the outer periphery of the iron core assembly 1120, the through-hole assembly 1130 sequentially penetrates the first pressing member 1111 and the second pressing member 1112 along the first direction, and the fastener 1141 penetrates the through-hole assembly 1130 along the first direction. Threaded fastening nuts 1142 are connected to both ends of the fastener 1141 along the first direction. Therefore, the installation and disassembly of the reactor iron core pressing structure 1100 are simple. The staff only needs to adjust the positions of the two fastening nuts 1142 on the fastener 1141 to reduce the distance between the first pressing member 1111 and the second pressing member 1112 in the first direction, so that the first pressing member 1111 and the second pressing member 1112 apply a pressing force along the first direction to the iron core assembly 1120, or adjust the magnitude of the pressing force, and then the pressing force can be used to resist the vibration of the iron core assembly 1120 along the first direction during the operation of the reactor, reducing the vibration amplitude of the reactor.

[0073] Compared with a traditional pressing device (not shown), in which the fastener 1141 penetrates the upper yoke 1121, the iron core column 1122, and the lower yoke 1123 along the first direction, and through-holes are provided on the contact surfaces between the iron core column 1122 and the upper yoke 1121 / lower yoke 1123, blocking the magnetic path of the contact surfaces between the iron core column 1122 and the upper yoke 1121 / lower yoke 1123, and the electromagnetic induction intensity at the through-holes is too high, easily causing equipment damage due to local overheating. In the reactor iron core pressing device 1000 of this embodiment, since the through-hole assembly 1130 is provided on the outer periphery of the iron core assembly 1120 and does not penetrate the upper yoke 1121, the iron core column 1122, and the lower yoke 1123, the magnetic path of the contact surfaces between the iron core column 1122 and the upper yoke 1121 / lower yoke 1123 is not blocked, and equipment damage caused by excessive electromagnetic induction intensity and local overheating at the contact surfaces between the iron core column 1122 and the upper yoke 1121 / lower yoke 1123 will not occur.

[0074] Please continue to refer to Figure 3In some embodiments, the reactor core clamping device 1000 includes a sleeve 1200. The sleeve 1200 is sleeved on the outer periphery of a fastening nut 1142 threadedly connected to one end of the fastener 1141 away from the second clamping member 1112 in the reactor core clamping structure 1100. The sleeve 1200 is slidably connected to the corresponding fastening nut 1142 and can move relative to the corresponding fastening nut 1142 along a first direction to push the limiting plate 1144-2 to move along the first direction toward the first clamping member 1112. An opening 1210 is provided on the outer peripheral surface of the sleeve 1200, and the opening 1210 passes through the peripheral wall of the sleeve 1200.

[0075] In this embodiment, a sleeve 1200 is provided on the outer periphery of a fastening nut 1142 threadedly connected to one end of the fastener 1141 away from the second clamping member 1112, so that the staff can push the sleeve 1200 to move along the first direction relative to the corresponding fastening nut 1142, so that the limit plate 1144-2 compresses the elastic member 1143 to the target deformation amount; an opening 1210 is provided on the outer peripheral surface of the sleeve 1200, and the opening 1210 passes through the peripheral wall of the sleeve 1200, so that the staff can push the sleeve 1200 close to the first clamping member 1112. During the process of pressing the second clamping member 1111, the fastening nut 1142 connected to the end of the fastener 1141 away from the second clamping member 1112 can be moved relative to the fastener 1141 through the opening 1210, thereby ensuring that the fastening nut 1142 blocks the limit plate 1144-2, and prevents the limit plate 1144-2 from moving toward the direction of the second clamping member 1112 pointing to the first clamping member 1111 under the elastic force of the elastic member 1143. In summary, the reactor core clamping device 1000 in this embodiment has simple assembly and pressing processes and is easy to operate.

[0076] In some embodiments, a plurality of adjustment holes 1142-1 are provided on the outer peripheral surface of a fastening nut 1142 that is threadedly connected to one end of the fastener 1141 away from the second clamping member 1112. The plurality of adjustment holes 1142-1 are arranged around the outside of the central axis of the fastening nut 1142. Each adjustment hole 1142-1 points from the outer peripheral surface of the fastening nut 1142 to the center of the fastening nut 1142.

[0077] In some embodiments, the reactor core clamping device 1000 includes a slide rod 1300 and a hollow hydraulic cylinder 1400, the slide rod 1300 includes a slide rod body 1310 and a slide rod head 1320, the slide rod body 1310 extends along a first direction, one end of the slide rod body 1310 along the first direction is connected to an end of the fastener 1141 away from the second clamping member 1112, and the other end passes through the sleeve 1200 and extends in a direction away from the first clamping member 1111, the hollow hydraulic cylinder 1400 is arranged on a side of the sleeve 1200 away from the first clamping member 1111, and is sleeved on the outer periphery of the slide rod body 1310, the slide rod head 1320 is arranged on a side of the hollow hydraulic cylinder 1400 away from the first clamping member 1111, and one end of the slide rod body 1310 along the first direction away from the first clamping member 1111 is connected to the slide rod head 1320.

[0078] In this embodiment, the hollow hydraulic cylinder 1400 pushes the slide rod head 1320 to move in a direction away from the first pressing member 1111. Since the slide rod body 1310 is connected to the fastener 1141, the slide rod head 1320 cannot be pushed, and the driving force is reacted to the sliding sleeve 1200 to make it move in a direction close to the first pressing member 1111. The sliding sleeve 1200 pushes the limit plate 1144-2 to compress the elastic member 1143, and the pull rod (not shown) is used to push the slide rod 1320 through the opening 1210 on the sliding sleeve 1200. ) Pull the fastening nut 1142 with the adjustment hole 1142-1 close to the limit plate 1144-2 to make it contact with the limit plate 1144-2. After multiple operations, until the elastic force generated by the elastic member 1143 reaches the target clamping force, pull the fastening nut 1142 with the adjustment hole 1142-1 for the last time to make it close to the limit plate 1144-2. After completion, relieve the pressure and remove the sliding sleeve 1200, the sliding rod 1300 and the hollow hydraulic cylinder 1400.

[0079] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A reactor core pressing structure, characterized in that The reactor core pressing structure includes:[[]] A pressing assembly, including a first pressing member and a second pressing member arranged at intervals along a first direction;[[]] A core assembly, disposed between the first pressing member and the second pressing member. The core assembly includes an upper yoke, a core column, and a lower yoke stacked in sequence. The upper yoke is located between the first pressing member and the core column, and the central axis of the core column is parallel to the first direction; the core column is formed by stacking a plurality of core cakes;[[]] A through-hole assembly, disposed on the outer periphery of the core assembly. The through-hole assembly sequentially penetrates the first pressing member and the second pressing member along the first direction;[[]] A fastening assembly, including a fastener and a fastening nut. The fastener is disposed within the through-hole assembly and penetrates the through-hole assembly along the first direction. Threaded fastening nuts are provided at both ends of the fastener along the first direction.[[]] 2. The reactor core pressing structure according to claim 1, characterized in that, Two fastening nuts are connected to one end of the fastener along the first direction away from the first pressing member;[[]] Among the two fastening nuts, one side of one fastening nut away from the first pressing member contacts one side of the other fastening nut close to the first pressing member.[[]] 3. The reactor core pressing structure according to claim 1 or 2, characterized in that The fastening assembly includes an elastic member. The elastic member is disposed on a side of the first pressing member away from the second pressing member, and a first through-hole is provided on the elastic member;[[]] One end of the fastener along the first direction away from the second pressing member penetrates through the first through-hole.[[]] 4. The reactor core pressing structure according to claim 3, characterized in that The elastic member includes a first elastic portion and a second elastic portion arranged along the first direction;[[]] The first through-hole penetrates through the first elastic portion and the second elastic portion along the first direction.[[]] 5. The reactor core pressing structure according to claim 3, characterized in that, The fastening assembly includes a limiting member. The limiting member includes a limiting sleeve and a limiting plate;[[]] The limiting sleeve is disposed on a side of the first pressing member away from the second pressing member and sleeved on the outer side of the elastic member. The dimension of the limiting sleeve along the first direction is smaller than the dimension of the elastic member along the first direction;[[]] The limiting plate is disposed on a side of the elastic member away from the first pressing member along the first direction. The limiting plate can compress the elastic member along the first direction under the action of an external force until it contacts a side of the limiting sleeve away from the first pressing member. A second through-hole is provided on the limiting plate, and one end of the fastener along the first direction away from the second pressing member penetrates through the second through-hole.[[]] 6. The reactor core pressing structure according to claim 5, characterized in that, The fastening assembly includes an insulating pad. The insulating pad is disposed between the first pressing member and the limiting sleeve and sleeved on the outer side of the fastener.[[]] 7. The reactor core pressing structure according to claim 1, characterized in that, The reactor core pressing structure includes a plurality of the core assemblies arranged at intervals along a second direction, and the second direction is perpendicular to the first direction;[[]] A plurality of the through-hole assemblies and a plurality of the fastening assemblies are disposed around the outer side of each core assembly. Each through-hole assembly sequentially penetrates the first pressing member and the second pressing member along the first direction;[[]] A plurality of the fastening components are arranged in one-to-one correspondence with a plurality of the through-hole components, and the fasteners in each of the fastening components penetrate through the corresponding through-hole component along the first direction, and fastening nuts are threadedly connected to both ends of each fastener along the first direction.

8. The reactor core pressing structure according to claim 7, characterized in that, Each of the through-hole components includes a first through-hole and a second through-hole that are coaxially arranged and communicate with each other; The first through-hole penetrates through the first pressing member along the first direction, the second through-hole penetrates through the second pressing member along the first direction, and the central axes of the first through-hole and the second through-hole are both parallel to the first direction; The fasteners in each of the fastening components sequentially pass through the first through-hole and the second through-hole in the corresponding through-hole component, and insulating sleeves are provided between the outer peripheral surface of each fastener and the hole wall of the corresponding first through-hole and the hole wall of the corresponding second through-hole.

9. A reactor core pressing device, comprising the reactor core pressing structure according to any one of claims 5 to 6.

10. The reactor core pressing device according to claim 9, characterized in that, The reactor core pressing device includes a sliding sleeve; A sliding sleeve is sleeved on the outer periphery of the fastening nut that is threadedly connected to the end of the fastener in the reactor core pressing structure that is away from the second pressing member. The sliding sleeve is slidably connected to the corresponding fastening nut and can move relative to the corresponding fastening nut along the first direction to push the limiting plate to move along the first direction towards the direction close to the first pressing member; An opening is provided on the outer peripheral surface of the sliding sleeve, and the opening penetrates through the peripheral wall of the sliding sleeve.

Images