A modular assembled core structure for marine transformers and its stacking method

Abstract

This invention relates to the field of iron core structure technology, and in particular to a modular assembly iron core structure for marine transformers and its stacking method. Based on a first silicon steel sheet, the remaining silicon steel sheets are stacked in equal quantities. Each time a stack is placed, a stacking auxiliary component temporarily presses and positions the placed silicon steel sheets to facilitate inspection and adjustment by personnel, preventing the stacked silicon steel sheets from becoming scattered. After the iron core body is stacked, in addition to the use of tie bolts and clamping components to clamp and support the iron core body, a movable protective clamp and a control component provide a stable clamping effect perpendicular to the tie bolts. After the iron core body is stacked, a verification component, in conjunction with the verification guide grooves on the top of both the movable and fixed protective clamps, verifies the neatness of the top of the iron core body.

Description

Technical Field

[0001] This invention relates to the field of core structure technology, and in particular to a modular assembled core structure for marine transformers and its stacking method. Background Technology

[0002] The stacking of transformer cores involves layering insulated silicon steel sheets to form a closed magnetic circuit, thereby reducing eddy current losses and improving efficiency. This process is a critical step in transformer manufacturing, directly affecting its electrical performance and operational stability.

[0003] The main process flow for iron core stacking is as follows:

[0004] Material preparation and treatment: Use silicon steel sheets with a thickness of 0.25–0.5 mm, and coat the surface with insulating varnish or oxide layer to ensure inter-sheet insulation; cut, punch and deburr the silicon steel sheets to prevent short circuits and local overheating.

[0005] Stacking methods: staggered stacking: the seams of adjacent iron cores are staggered to form an "EI" or "EE" type structure, which effectively reduces the air gap and improves the permeability; full oblique seam stacking: used in large power transformers, which makes the magnetic flux direction more continuous and reduces no-load loss.

[0006] Mechanical clamping and fixing: After stacking, use clamps and pull plates to apply uniform pressure to the iron core to prevent vibration caused by electromagnetic force during operation; the clamping force should be moderate to avoid deformation of the iron core or damage to the insulation layer.

[0007] However, for the installation of larger iron cores of marine transformers, they are generally stacked on the support frame on site. After the iron cores are stacked, the windings can be assembled, the leads connected and clamped on the support frame to form a complete transformer structure, avoiding the risk of damage caused by secondary handling.

[0008] The support frame used to install the iron core generally consists of a support base and a top clamping frame. When stacking silicon steel sheets layer by layer, this operation lacks a temporary clamping and positioning function. Specifically, when stacking vertically, it is necessary to ensure the positional stability of the stacked silicon steel sheets so that operators can perform subsequent stacking or inspection of the stacked sheets. Furthermore, after the iron core is stacked, there is a lack of a flatness detection mechanism to help operators judge its position. When clamping the top of the iron core, it is generally secured by tie bolts, but there is a lack of suitable calibration and positioning components in the direction perpendicular to the tie bolts to ensure satisfactory stacking quality.

[0009] To address these issues, this invention proposes a modular, assembled core structure for marine transformers and its stacking method. Summary of the Invention

[0010] The purpose of this invention is to provide a modular assembled core structure for marine transformers and its stacking method, so as to solve the problems mentioned in the background art.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a modular assembled core structure for a marine transformer, comprising a core body, which is composed of multiple stacked silicon steel sheets;

[0012] A winding assembly is also installed on the main body of the iron core;

[0013] Corner slots are provided at the corners of the silicon steel sheets;

[0014] The core structure also includes a support base and an insulating pad disposed on the support base;

[0015] The support body is also provided with a lower clamping frame, which works in conjunction with the upper clamping frame to stack and stabilize the iron core.

[0016] Both the upper clamping frame and the lower clamping frame are provided with clamping components, and two sets of them are symmetrically arranged respectively.

[0017] The clamping member in the lower clamping frame is provided with a fixing foot on the side, which is fixed to the support base by screws;

[0018] A lifting ring is also provided at the top of the clamping component in the upper clamping frame.

[0019] Preferably, the symmetrically arranged clamping members securely clamp the iron core body using tie bolts;

[0020] The clamping component has fixed protective plates that are equidistantly fixed on its inner side, and two movable protective plates that are symmetrically arranged.

[0021] Preferably, a limiting foot that is adapted to and engages with the corner slot is fixedly provided at the side corner of the movable protective clamp;

[0022] Verification guide grooves are provided at the top of both the movable protective clamp and the fixed protective clamp;

[0023] The groove opening of the calibration guide groove is convex.

[0024] A connecting block is also fixedly installed on the back side of the movable protective clamp, and a connecting screw groove is provided at the end of the connecting block.

[0025] Preferably, the position of the movable protective clamp is adjusted by a set control component;

[0026] The control component includes control grooves symmetrically arranged in the clamping member;

[0027] The control assembly also includes an internally threaded bidirectional screw cylinder and control screws that are symmetrically threaded and located at both ends of the internally threaded bidirectional screw cylinder.

[0028] A rotating auxiliary ridge is also provided on the outer wall of the internally threaded bidirectional screw cylinder.

[0029] Preferably, a connector is fixedly provided at one end of the regulating screw, and a through groove is provided in the connector;

[0030] The connector is fixedly connected to the connecting block by mounting screws;

[0031] A locking nut is also threaded onto the adjusting screw.

[0032] Preferably, the verification guide groove is used in conjunction with the verification assembly to level and verify the top of the iron core body;

[0033] The verification component includes a leveling bar and limiting slide bars that are fixedly installed at both ends of the leveling bar and are adapted to slide and connected to the verification guide slide groove.

[0034] A handle is also provided at the top of the leveling bar.

[0035] Preferably, the lower clamping frame is used in conjunction with the stacking auxiliary assembly to provide temporary positioning for the stacked silicon steel sheets;

[0036] The stacking auxiliary assembly includes a clamping plate and a support rod connected to the clamping plate; a fastening stud is provided in the clamping plate, which positions the clamping plate on one of the clamping members in the lower clamping frame, and the fastening stud is also threadedly connected to a first locking nut.

[0037] Preferably, a limiting groove is provided on one side of the supporting rod along its length, and a load-bearing slider is movably disposed in the limiting groove; a positioning screw groove is provided at the end of the load-bearing slider;

[0038] The support rod is also provided with equally spaced circular holes, which are connected to the limiting slide groove.

[0039] The load-bearing slider is positioned by a set positioning screw.

[0040] Preferably, the bearing slider is fixedly connected to the bearing plate and a compression stud is provided through the bearing plate via a threaded connection;

[0041] One end of the extrusion stud is connected to an auxiliary bearing, which is embedded in the stabilizing pressure plate.

[0042] A second locking nut is also threaded onto the extrusion stud.

[0043] A method for stacking a modular, assembled core structure for a marine transformer, the method being as follows:

[0044] S1: First, fix one of the clamping parts in the lower clamping frame to the support base with screws, and then install and position the stacking auxiliary components on the clamping part;

[0045] S2: Then place the bottom end of the first silicon steel sheet on the support base, and the bottom end of the silicon steel sheet contacts the insulating pad on the top of the support base;

[0046] One side of the first silicon steel sheet is tightly attached to the already fixed clamping component. During this process, the movable protective clamping plate needs to be adjusted by the adjustment component so that the limiting foot on it is locked in the corner slot at the bottom corner of the silicon steel sheet, so as to provide a pre-position for the first silicon steel sheet.

[0047] S3: Based on the first silicon steel sheet, stack the remaining silicon steel sheets in equal quantities. Each time a stack is placed, the stacking auxiliary components are used to temporarily press and position the placed silicon steel sheets so that the staff can check and adjust them.

[0048] S4: After all the silicon steel sheets have been placed, use another clamping piece in the lower clamping frame to press the iron core body, and then use tie bolts to secure it.

[0049] Next, remove the stacking auxiliary components and then fix another clamping component with screws;

[0050] S5: Finally, use the upper clamp to clamp and stabilize the top of the iron core body.

[0051] Compared with the prior art, the beneficial effects of the present invention are:

[0052] The modular, assembled core structure of the marine transformer designed in this invention includes a core body, which is composed of multiple stacked silicon steel sheets; a winding assembly is also provided on the core body; corner slots are provided at the corners of the silicon steel sheets; a lower clamping frame is provided on the support base, and the lower clamping frame works in conjunction with the upper clamping frame to stabilize the stacked core; both the upper and lower clamping frames are provided with clamping members, and two sets are symmetrically arranged on each; a fixing foot is provided on the side of the clamping member in the lower clamping frame, and the fixing foot is fixed to the support base by screws; a lifting ring is provided at the top of the clamping member in the upper clamping frame.

[0053] The bottom end of the first silicon steel sheet is placed on the support base, and the bottom end of the silicon steel sheet contacts the insulating pad on the top of the support base. One side of the first silicon steel sheet is tightly attached to the fixed clamping component. During this process, the movable protective clamping plate needs to be adjusted by the adjustment component so that the limiting foot on it is locked in the corner groove at the bottom corner of the silicon steel sheet to provide a pre-position for the first silicon steel sheet.

[0054] First, the first silicon steel sheet is pre-positioned using a combination of a movable protective clamp and a control component. Then, based on this first sheet, the remaining silicon steel sheets are stacked in equal numbers. Each time a stack is placed, a stacking auxiliary component temporarily clamps and positions the placed silicon steel sheets, facilitating inspection and adjustment by the staff. This stacking auxiliary component provides operational assistance during the inspection process of the iron core body, improving the ease of operation for staff and preventing the stacked silicon steel sheets from becoming scattered.

[0055] Furthermore, after the iron core body is stacked, the iron core body is clamped and supported by the tie bolts and clamping components. The movable protective clamp and the adjustment components also provide a clamping stability perpendicular to the tie bolts, which has a positive effect on improving the stacking stability of the iron core body.

[0056] Furthermore, after the iron core body is stacked, the alignment of the top of the iron core body is checked by using the check guide grooves on the top of the check assembly, the movable protective clamp, and the fixed protective clamp, to ensure the flatness and stability of the stacked iron core body. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the modular assembled iron core structure of the present invention;

[0058] Figure 2 This is a schematic diagram showing the connection between the iron core body and the upper and lower clamping frames of the present invention.

[0059] Figure 3 This is a schematic diagram of the upper clamping frame and the lower clamping frame of the present invention;

[0060] Figure 4 for Figure 3 Enlarged schematic diagram of the structural connection at point A;

[0061] Figure 5 This is a schematic diagram of the upper clamping frame structure of the present invention;

[0062] Figure 6 for Figure 5 Enlarged schematic diagram of the structural connection at point B;

[0063] Figure 7 This is a schematic diagram of the left side of the exploded connection between the control component and the movable protective clamp structure of the present invention;

[0064] Figure 8 for Figure 7 Enlarged schematic diagram of the structural connection at point C;

[0065] Figure 9 This is a right-side view of the connection between the control component and the movable protective clamp structure of the present invention after an explosion.

[0066] Figure 10 for Figure 9 Enlarged schematic diagram of the structural connection at point D;

[0067] Figure 11 This is a schematic diagram of the verification component structure of the present invention;

[0068] Figure 12 This is a schematic diagram of the front side of the stacked silicon steel sheets of the present invention;

[0069] Figure 13 for Figure 12 Enlarged schematic diagram of the structural connection at point E in the middle;

[0070] Figure 14 for Figure 12 Enlarged schematic diagram of the structural connection at point F;

[0071] Figure 15 This is a schematic diagram of the back side of the stacked silicon steel sheets of the present invention;

[0072] Figure 16 for Figure 15 Enlarged schematic diagram of the structural connection at point G in the middle;

[0073] Figure 17 This is an exploded view of the stacked auxiliary component structure of the present invention.

[0074] In the diagram: 1. Silicon steel sheet; 101. Corner slot; 2. Winding assembly; 3. Support base; 301. Insulating pad; 401. Clamping component; 402. Tie bolt; 403. Lifting eye; 404. Fixed protective clamp; 405. Movable protective clamp; 4051. Limiting foot; 4052. Check guide groove; 4053. Connecting block; 4054. Connecting screw groove; 501. Adjusting groove; 502. Connecting head; 503. Through groove; 504. Mounting screw; 505. Adjusting screw; 505. Internal threaded bidirectional screw barrel. 506. Rotating auxiliary convex strip; 507. Locking nut; 508. Limiting slide bar; 601. Leveling pressure bar; 602. Handle; 603. Clamping plate; 701. Support rod; 702. Fastening stud; 703. First locking nut; 704. Limiting slide groove; 705. Bearing slider; 706. Positioning screw groove; 707. Round hole body; 708. Positioning screw; 709. Bearing plate body; 801. Extrusion stud; 802. Auxiliary bearing; 803. Stabilizing pressure plate; 804. Second locking nut; 805. Detailed Implementation

[0075] The technical solutions in the embodiments of the present invention will be clearly and completely described below. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0076] Example 1: Please refer to Figures 1-17 A modular assembled core structure for a marine transformer includes a core body, which is composed of multiple silicon steel sheets 1 stacked together; a winding group 2 is also provided on the core body.

[0077] Corner slots 101 are provided at the corners of the silicon steel sheet 1;

[0078] The core structure also includes a support base 3 and an insulating pad 301 disposed on the support base 3;

[0079] The support body 3 is also provided with a lower clamping frame and the lower clamping frame and the upper clamping frame are used together to stack and stabilize the iron core.

[0080] Both the upper clamping frame and the lower clamping frame are equipped with clamping members 401, and two sets are symmetrically arranged respectively; a fixing foot is provided on the side of the clamping member 401 in the lower clamping frame, and the fixing foot is fixed to the support base 3 by screws; a lifting ring 403 is also provided on the top of the clamping member 401 in the upper clamping frame.

[0081] This solution addresses the core stacking process, starting from the attached... Figure 5 - Appendix Figure 10 and appendix Figure 12 - Appendix Figure 17 As shown, it can be known that

[0082] The bottom end of the first silicon steel sheet 1 is placed on the support base 3, and the bottom end of the silicon steel sheet 1 contacts the insulating pad 301 on the top of the support base 3; one side of the first silicon steel sheet 1 is tightly attached to the clamping member 401 that has been fixed. During this process, the movable protective clamping plate 405 needs to be adjusted by the adjustment component so that the limiting foot 4051 on it is locked in the corner groove 101 at the bottom corner of the silicon steel sheet 1, so as to provide a pre-position for the first silicon steel sheet 1.

[0083] First, the first silicon steel sheet 1 is pre-positioned using the movable protective clamp 405 in conjunction with the control component. Then, based on the first silicon steel sheet 1, the remaining silicon steel sheets 1 are stacked in equal numbers. Each time a stack is placed, the stacking auxiliary component temporarily clamps and positions the placed silicon steel sheets 1 to facilitate inspection and adjustment by the staff. This stacking auxiliary component provides operational assistance during the inspection process of the iron core body, improving the ease of operation for the staff and preventing the stacked silicon steel sheets 1 from becoming scattered.

[0084] Furthermore, after the iron core body is stacked, the iron core body is clamped and supported by the tie bolts 402 and the clamping parts 401. The movable protective clamp 405 and the adjustment components work together to provide a clamping stability perpendicular to the tie bolts 402 for the iron core body, which has a positive effect on improving the stacking stability of the iron core body.

[0085] Combined with the appendix Figure 5 Appendix Figure 8 and appendix Figure 11 As shown, after the iron core body is stacked, the alignment of the top of the iron core body is checked by the check guide groove 4052 on the top of the check component, the movable protective clamp 405 and the fixed protective clamp 404, to ensure the flatness and stability of the iron core body after stacking.

[0086] Then from the appendix Figure 5 - Appendix Figure 10 and appendix Figure 12 - Appendix Figure 17 As shown, the symmetrically arranged clamping members 401 clamp and stabilize the iron core body by tie bolts 402; fixed protective clamping plates 404 are fixedly arranged at equal intervals on the inner side of the clamping members 401, and two movable protective clamping plates 405 are symmetrically arranged.

[0087] Additionally, a limiting foot 4051 that is adapted to and engages with the corner slot 101 is fixedly provided at the side corner of the movable protective clamp 405.

[0088] A calibration guide groove 4052 is provided at the top of both the movable protective clamp 405 and the fixed protective clamp 404; the groove opening of the calibration guide groove 4052 is convex; a connecting block 4053 is also fixedly provided on the back side of the movable protective clamp 405, and a connecting screw groove 4054 is provided at the end of the connecting block 4053; the position of the movable protective clamp 405 is adjusted by the provided control components.

[0089] For the stacking of the iron core body, firstly, a clamping component 401 in the lower clamping frame is fixed to the support base 3 with screws. Then, the stacking auxiliary components are installed and positioned on the clamping component 401. Next, the bottom end of the first silicon steel sheet 1 is placed on the support base 3, and the bottom end of the silicon steel sheet 1 contacts the insulating pad 301 on the top of the support base 3. One side of the first silicon steel sheet 1 is tightly attached to the fixed clamping component 401. During this process, the movable protective clamp 405 needs to be adjusted by the adjusting component to ensure that it is properly positioned. The limiting foot 4051 is engaged in the corner slot 101 at the bottom corner of the silicon steel sheet 1 to provide a pre-position for the first silicon steel sheet 1; that is, the position of the movable protective clamp 405 is adjusted by the adjusting component so that the limiting foot 4051 on the movable protective clamp 405 is engaged in the corner slot 101 on both sides of the bottom end of the silicon steel sheet 1, and then the silicon steel sheet 1 is clamped; then the remaining silicon steel sheets 1 are stacked with the first silicon steel sheet 1 as the reference, and 5 silicon steel sheets 1 can be stacked at a time.

[0090] The control component includes a control groove 501 symmetrically arranged in the clamping member 401; the control component also includes an internally threaded bidirectional screw cylinder 506 and control screws 505 symmetrically threaded at both ends of the internally threaded bidirectional screw cylinder 506; a rotation auxiliary rib 507 is also provided on the outer wall of the internally threaded bidirectional screw cylinder 506.

[0091] A connector 502 is fixedly provided at one end of the regulating screw 505, and a through groove 503 is provided in the connector 502; the connector 502 is fixedly connected to the connecting block 4053 by a mounting screw 504; a locking nut 508 is also threadedly connected to the regulating screw 505.

[0092] That is, after the limiting foot 4051 on the movable protective clamp 405 is inserted into the corner slot 101 of the silicon steel sheet 1, the internal thread bidirectional screw 506 is rotated. During the rotation of the internal thread bidirectional screw 506, the adjusting screws 505 connected to both ends of the controller are simultaneously retracted or extended to achieve the purpose of position adjustment of the movable protective clamp 405. When the limiting foot 4051 is inserted into the corner slot 101, the internal thread bidirectional screw 506 is rotated again to drive the adjusting screws 505 at both ends to lock, so that the two movable protective clamps 405 clamp the silicon steel sheet 1. Then, the locking nut 508 on the adjusting screw 505 is tightened to ensure the stability of the internal thread bidirectional screw 506 after rotation adjustment.

[0093] From the appendix Figure 8 As shown, the movable protective clamp 405 is detachable for easy replacement and maintenance. A connecting block 4053 is provided on the back side of the movable protective clamp 405 to connect with the connector 502 at one end of the adjusting screw 505, and then the connection is fixed with the mounting screw 504. During the adjustment and sliding of the movable protective clamp 405, the connecting block 4053 on the back side of the movable protective clamp 405 is located in the adjusting groove 501 in the clamping member 401, that is, the connecting block 4053 slides in the adjusting groove 501.

[0094] After the first silicon steel sheet 1 is pre-positioned, the stacking auxiliary assembly is installed, which works in conjunction with the lower clamping frame to provide temporary positioning for the stacked silicon steel sheet 1.

[0095] The stacking auxiliary assembly includes a clamping plate 701 and a support rod 702 connected to the clamping plate 701; a fastening stud 703 is provided in the clamping plate 701, which positions the clamping plate 701 on one of the clamping members 401 in the lower clamping frame, and the fastening stud 703 is also threadedly connected to a first locking nut 704; a limiting groove 705 is provided on one side of the support rod 702 along its length, and a bearing slider 706 is movably disposed in the limiting groove 705; a positioning screw groove 707 is provided at the end of the bearing slider 706;

[0096] The support rod 702 is also provided with equidistant circular holes 708, which are connected to the limiting slide groove 705; the bearing slider 706 is positioned by the positioning screw 709; the bearing slider 706 is fixedly connected to the bearing plate 801 and a pressing stud 802 is threaded through the bearing plate 801; one end of the pressing stud 802 is connected to the auxiliary bearing 803, and the auxiliary bearing 803 is embedded in the stabilizing pressure plate 804; a second locking nut 805 is also threadedly connected to the pressing stud 802.

[0097] As attached Figure 14 - Appendix Figure 17 As shown, the installation of the stacked auxiliary components involves clamping the clamping plate 701 onto the clamping member 401, ensuring that the support rod 702 is aligned with the silicon steel sheet 1, then tightening the fastening stud 703 to position the support rod 702, and finally tightening the first locking nut 704 on the fastening stud 703.

[0098] Then, based on the first silicon steel sheet 1, the remaining silicon steel sheets 1 are stacked in equal numbers. Each time they are stacked, the stacking auxiliary components are used to temporarily press and position the placed silicon steel sheets 1 so that the staff can check and adjust them.

[0099] That is, after placing a certain number of silicon steel sheets 1, such as 5 or 6 sheets each, the stacked silicon steel sheets 1 are inspected to ensure timely correction. During this process, a stacking auxiliary component is needed to temporarily position the stacked silicon steel sheets 1 so that the staff can operate it and avoid the problem of the stacked silicon steel sheets 1 becoming loose during the inspection.

[0100] Therefore, the position of the bearing plate 801 is adjusted by sliding the bearing slider 706 in the limiting groove 705 in the support rod 702. After reaching the appropriate position, the bearing plate 801 is positioned by the positioning screw 709 cooperating with the positioning screw groove 707 on the bearing slider 706.

[0101] Next, rotate the extrusion stud 802, which pushes the stabilizing pressure plate 804 to extrude the silicon steel sheet 1. Then, tighten the second locking nut 805 on the extrusion stud 802.

[0102] During this process, as the extrusion stud 802 pushes the stabilizing pressure plate 804 to press and stabilize the silicon steel sheet 1, this solution also sets an auxiliary bearing 803 at the connection between the stabilizing pressure plate 804 and the extrusion stud 802. The purpose is to prevent the stabilizing pressure plate 804 from generating excessive friction on the silicon steel sheet 1 when the extrusion stud 802 rotates during the extrusion process, thus providing a protective effect for the silicon steel sheet 1.

[0103] After the inspection and correction are completed, the remaining silicon steel sheets 1 are then stacked and placed. During this process, the pressure and positioning of the stabilizing plate 804 on the silicon steel sheets 1 needs to be released. After stacking and placing the remaining silicon steel sheets 1, if it is necessary to adjust the position of the bearing plate 801, first release the positioning screw 709 to position it, and then adjust the position of the bearing plate 801 by sliding the bearing slider 706 in the limiting slide groove 705. Then, the positioning screw 709 is used to position the bearing slider 706.

[0104] After the iron core body is stacked, that is, after all the silicon steel sheets 1 are placed, another clamping member 401 in the lower clamping frame is pressed against the iron core body, and then secured with tie bolts 402. Then, the stacking auxiliary components are removed, and the other clamping member 401 is fixed with screws. During this process, while pressing the iron core body with the other clamping member 401, the corner slot 101 at the bottom corner of the outermost, that is, the last silicon steel sheet 1, is also clamped by the cooperation of the movable protective clamping plate 405 set on the clamping member 401 and the control component. Then, the two clamping members 401 are secured with tie bolts 402.

[0105] Combined with appendix Figure 1 - Appendix Figure 2 Appendix Figure 5 - Appendix Figure 6 and appendix Figure 11 As shown, the upper clamping frame is used to clamp and stabilize the top of the iron core body.

[0106] That is, the upper clamping frame provides a clamping function for the top of the iron core body; similarly, the limiting foot 4051 on the movable protective clamping plate 405 inside the clamping member 401 in the upper clamping frame needs to be engaged with the corner groove 101 on the top of the silicon steel sheet 1, and then the internal thread bidirectional screw 506 and the locking nut 508 are tightened, and then the two clamping members 401 are tightened with the tie bolt 402.

[0107] During this process, the tops of the fixed protective clamp 404 and the movable protective clamp 405 located inside the clamping member 401 will be aligned with the top of the iron core body. After the iron core body is stacked, its flatness is checked by using the verification component in conjunction with the verification guide groove 4052 on the top of the fixed protective clamp 404 and the movable protective clamp 405.

[0108] The verification component includes a leveling bar 602 and limiting slide bars 601 that are fixedly installed at both ends of the leveling bar 602 and are adapted to slide and connected to the verification guide slide groove 4052; a handle 603 is also provided on the top of the leveling bar 602.

[0109] The groove shape of the verification guide slide 4052 and the end shape of the limiting slide 601 are both set to convex. During the verification and inspection operation, the limiting slides 601 at both ends of the leveling pressure rod 602 are slid into the verification guide slide 4052 at the top of the movable protective clamp 405. At this time, the bottom side of the leveling pressure rod 602 contacts the top of the iron core body. Then, the handle 603 is held by hand and slid along the length of the clamp 401. If jamming or other problems occur during the sliding process, the flatness of the top of the iron core body needs to be corrected; if the sliding is smooth, no further inspection is required.

[0110] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular assembled core structure for a marine transformer, comprising a core body, the core body being composed of multiple silicon steel sheets (1) stacked together; A winding assembly (2) is also provided on the iron core body. Its features are: Corner slots (101) are provided at the corners of the silicon steel sheet (1). The core structure also includes a support base (3) and an insulating pad (301) disposed on the support base (3). A lower clamping frame is also provided on the support base (3), and the lower clamping frame and the upper clamping frame are used together to stack and stabilize the iron core. Both the upper clamping frame and the lower clamping frame are provided with clamping components (401), and two sets are symmetrically arranged respectively; A fixing foot is provided on the side of the clamping member (401) in the lower clamping frame, and the fixing foot is fixed to the support base (3) by screws; A lifting ring (403) is also provided at the top of the clamping member (401) in the upper clamping frame. The symmetrically arranged clamping members (401) securely hold the iron core body by means of tie bolts (402); Among them, fixed protective clamps (404) are fixedly provided at equal intervals on the inner side of the clamping member (401), and two movable protective clamps (405) are symmetrically and movably provided. A limiting foot (4051) that is compatible with the corner slot (101) is fixedly provided at the corner of the side wall of the movable protective clamp (405). Verification guide grooves (4052) are provided at the top of both the movable protective clamp (405) and the fixed protective clamp (404). The groove shape of the verification guide groove (4052) is convex; A connecting block (4053) is fixedly installed on the back side of the movable protective clamp (405), and a connecting screw groove (4054) is provided at the end of the connecting block (4053).

2. The modular assembled core structure of a marine transformer according to claim 1, characterized in that: The position of the active protective clamp (405) is adjusted by the set control components; The control component includes control grooves (501) symmetrically arranged in the clamping member (401). The control assembly also includes an internally threaded bidirectional screw cylinder (506) and control screws (505) that are symmetrically threaded and disposed at both ends of the internally threaded bidirectional screw cylinder (506). A rotating auxiliary ridge (507) is also provided on the outer wall of the internally threaded bidirectional screw barrel (506).

3. The modular assembled core structure of a marine transformer according to claim 2, characterized in that: A connector (502) is fixedly provided at one end of the regulating screw (505), and a through groove (503) is provided in the connector (502); The connector (502) is fixedly connected to the connector block (4053) by mounting screws (504); A locking nut (508) is also threaded onto the adjusting screw (505).

4. The modular assembled core structure of a marine transformer according to claim 1, characterized in that: The verification guide chute (4052) is used in conjunction with the verification assembly to level and verify the top of the iron core body; The verification component includes a leveling bar (602) and a limiting slide bar (601) that is adapted to and slidably connected to the verification guide slide groove (4052) at both ends of the leveling bar (602). A handle (603) is also provided on the top of the leveling bar (602).

5. The modular assembled core structure of a marine transformer according to claim 1, characterized in that: The lower clamping frame is used in conjunction with the stacking auxiliary assembly to provide temporary positioning for the stacked silicon steel sheets (1); The stacking auxiliary assembly includes a clamping plate (701) and a support rod (702) connected to the clamping plate (701); a fastening stud (703) is provided in the clamping plate (701), which positions the clamping plate (701) on one of the clamping members (401) in the lower clamping frame, and the fastening stud (703) is also threadedly connected to a first locking nut (704).

6. The modular assembled core structure of a marine transformer according to claim 5, characterized in that: A limiting groove (705) is provided on one side of the supporting rod (702) and along its length, and a bearing slider (706) is movably disposed in the limiting groove (705); a positioning screw groove (707) is provided at the end of the bearing slider (706). The support rod (702) is also provided with circular holes (708) at equal intervals, and the circular holes (708) are connected to the limiting slide groove (705); The load-bearing slider (706) is positioned by a positioning screw (709).

7. The modular assembled core structure of a marine transformer according to claim 6, characterized in that: The bearing slider (706) is fixedly connected to the bearing plate (801), and a compression stud (802) is provided through the bearing plate (801) via a threaded connection. One end of the extrusion stud (802) is connected to the auxiliary bearing (803), and the auxiliary bearing (803) is embedded in the stabilizing pressure plate (804); A second locking nut (805) is also threaded onto the extrusion stud (802).

8. A method for stacking a modular, assembled core structure of a marine transformer as described in any one of claims 1-7, characterized in that, The stacking method is as follows: S1: First, fix one of the clamping parts (401) in the lower clamping frame to the support base (3) with screws, and then install and position the stacking auxiliary components on the clamping part (401); S2: Then place the bottom end of the first silicon steel sheet (1) on the support body (3), and the bottom end of the silicon steel sheet (1) contacts the insulating pad (301) on the top of the support body (3); One side of the first silicon steel sheet (1) is tightly attached to the fixed clamp (401). During this process, the movable protective clamp (405) needs to be adjusted by the adjustment component so that the limiting foot (4051) on it is locked in the corner slot (101) at the bottom corner of the silicon steel sheet (1) to provide a pre-position for the first silicon steel sheet (1). S3: Based on the first silicon steel sheet (1), the remaining silicon steel sheets (1) are stacked in equal quantities. Each time they are stacked, the stacking auxiliary components are used to temporarily press and position the placed silicon steel sheets (1) so that the staff can check and adjust them. S4: After placing all the silicon steel sheets (1), press the iron core body with another clamping piece (401) in the lower clamping frame, and then use tie bolts (402) to stabilize it. Then the stacking auxiliary components are removed, and another clamping component (401) is fixed with screws; S5: Finally, use the upper clamp to clamp and stabilize the top of the iron core body.

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