An assembled multiphase iron core structure for a dry-type transformer and an installation method thereof

Abstract

The present invention discloses an assembled multi-phase iron core structure for a dry-type transformer and an installation method thereof, comprising an iron core base, a receiving spring, a receiving connection seat and a core iron core assembly. Firstly, an outer shell clamp is attached to the left and right sides of the iron core outer shell, and the clamp bolts are nested and installed in the bolt countersunk holes, and the outer shell clamp and the iron core outer shell are nested and installed in the assembly outer shell, the extension length of the movable connecting rod on the side of the iron core base is adjusted, and the positioning bolts are used to penetrate and fix, the receiving spring and the receiving connection seat are installed inside the base outer shell, the nesting head in the core iron core assembly is nested and installed in the embedded shell, and the inner receiving plate is pressed down to connect the contact electrode to the contact base on the lower side, and then the locking nut is used to fix the position of the adjustment slider, thereby completing the assembly of the entire iron core structure, realizing that multiple groups of iron core structures are installed together in the transformer, and at the same time, all components are assembled, which effectively simplifies the maintenance and repair steps.

Description

Technical Field

[0001] The present invention relates to the technical field of dry-type transformers, and in particular to an assembled multi-phase iron core structure for a dry-type transformer and a mounting method thereof. Background Art

[0002] The dry type is mainly composed of an iron core made of silicon steel sheets and a coil cast with epoxy resin. An insulating cylinder is placed between the high and low voltage coils to increase electrical insulation, and the coil is supported and constrained by pads. Due to the advantages of dry-type transformers such as strong short-circuit resistance, low maintenance workload, high operating efficiency, small size and low noise, they are often used in places with high requirements for fire prevention, explosion-proof and other performances.

[0003] Patent No. CN201921557477.4 provides an iron core insulation structure for a dry-type transformer, which is sandwiched between a metal clamp and an iron core, and an insulation box and an epoxy laminated glass cloth board are stacked, thereby providing good insulation between the metal clamp and the iron core. The thermally conductive insulating adhesive in the insulation box is used to increase the rate at which the heat of the iron core is transferred to the metal clamp, and the thermally conductive insulating adhesive can also play an insulating role, further improving the insulation between the metal clamp and the iron core. The above patent has the following problems:

[0004] 1. This type of transformer usually only has one set of core structure installed, and a single set of core structure cannot satisfy the voltage conversion of the transformer in various situations;

[0005] 2. This type of core structure is usually an integrated structure. If a local equipment failure occurs in this type of core, the entire core needs to be replaced, and the maintenance procedures are relatively cumbersome. Summary of the invention

[0006] The object of the present invention is to provide an assembled multi-phase iron core structure for a dry-type transformer and an installation method thereof, wherein the shell clamp is attached to the left and right sides of the iron core shell, and the clamp bolts are nested and installed in the bolt countersunk holes, and the shell clamp and the iron core shell are nested and installed in the assembly shell, and the bottom of the iron core electrode is nested in the nesting head, and the extension length of the movable connecting rod on the side of the iron core base is adjusted according to the size of each component in the core iron core assembly, and is fixed through with a positioning bolt, and a receiving spring and a receiving connection seat are installed inside the base shell, and the nesting head in the core iron core assembly is nested and installed in the embedded shell, and the inner receiving plate is pressed down to connect the contact electrode to the contact base on the lower side, and then the locking nut is used to fix the position of the adjustment slider, thereby completing the assembly of the entire iron core structure, and the iron core structure is installed at the corresponding position in the dry-type transformer to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An assembled multi-phase iron core structure for a dry-type transformer comprises an iron core base, a receiving spring, a receiving connection seat and a core iron core assembly, wherein the receiving spring is installed inside the iron core base, the receiving connection seat is installed on the upper side of the receiving spring, and the core iron core assembly is installed inside the receiving connection seat.

[0009] Preferably, the core base includes a base shell, a central partition, a partition buckle, a threaded buckle, an electrode interface, an external electrode rod, a connecting sleeve, a reset spring, a movable connecting rod, an internal limit plate and a positioning bolt. A central partition is provided inside the base shell, and a partition buckle is installed on the lower side of the central partition. A threaded buckle is provided at the bottom of the base shell, and an electrode interface is provided at the upper end of the threaded buckle. An external electrode rod is provided inside the threaded buckle. A connecting sleeve is provided on the side of the base shell, and a reset spring is provided in the connecting sleeve. An internal limit plate is provided at the end of the reset spring, and a movable connecting rod is provided on the outer side of the inner limit plate, and a positioning bolt is installed on the outer bottom end of the connecting sleeve.

[0010] Preferably, the receiving connection seat includes a connecting base, an embedded electrode, an embedded shell, a contact base, a side slide groove, an adjusting slider, an inner receiving plate, a contact electrode, a locking base, a locking screw and a locking nut. An embedded electrode is provided at the bottom center of the connecting base, an embedded shell is provided above the connecting base, a contact base is provided at the inner bottom end of the embedded shell, a side of the embedded shell is provided, an adjusting slider is installed in the side slide groove, an inner receiving plate is provided on the inner side of the adjusting slider, a contact electrode is installed at the center of the inner receiving plate, a locking base is provided on the outer side of the adjusting slider, a locking screw is provided on the locking base, and a locking nut is installed on the locking screw.

[0011] Preferably, the core iron core assembly includes an assembly shell, a nesting head, an iron core shell, a core iron core component, an iron core electrode, an assembly shell splint, bolt countersunk holes and splint bolts, wherein the assembly shell is provided with nesting heads at both ends of the bottom, and an iron core shell is provided at the center of the upper side of the assembly shell, the core iron core component is installed inside the iron core shell, the iron core electrode is installed at the bottom of the core iron core component, the assembly shell is provided with an assembly shell splint on the left and right sides, and the four corners of the assembly shell splint are provided with bolt countersunk holes, and the splint bolts are installed in the bolt countersunk holes.

[0012] Preferably, the nested head is nested and installed inside the embedded shell.

[0013] Preferably, the receiving spring is installed on the outer side of the embedded electrode.

[0014] The present invention provides another technical solution: a method for installing an assembled multi-phase core structure for a dry-type transformer, comprising the following steps:

[0015] Step 1: Attach the shell clamp to the left and right sides of the core shell, and nest the clamp bolts in the bolt countersunk holes, and nest the shell clamp and the core shell in the component shell, and nest the bottom of the core electrode in the nesting head;

[0016] Step 2: According to the size of each component in the core core assembly, adjust the extension length of the movable connecting rod on the side of the core base, and use the positioning bolts to penetrate and fix, and install the receiving spring and the receiving connection seat inside the base shell;

[0017] Step 3: Install the nesting head in the core iron core assembly in the embedded shell, press down the inner receiving plate to connect the contact electrode with the contact base on the lower side, and then use the locking nut to fix the position of the adjustment slider to complete the assembly of the entire iron core structure;

[0018] Step 4: Install the core structure at a corresponding position in the dry-type transformer.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention proposes an assembled multi-phase iron core structure for a dry-type transformer and an implementation method thereof. First, the shell clamp is attached to the left and right sides of the iron core shell, and the clamp bolts are nested and installed in the bolt countersunk holes, and the shell clamp and the iron core shell are nested and installed in the component shell, and the bottom of the iron core electrode is nested in the nesting head. According to the size of each component in the core iron core assembly, the extension length of the movable connecting rod on the side of the iron core base is adjusted, and the positioning bolt is used to penetrate and fix it, and the receiving spring and the receiving connection seat are installed inside the base shell, and the nesting head in the core iron core assembly is nested and installed in the embedded shell, and the inner receiving plate is pressed down to connect the contact electrode to the contact base on the lower side, and then the locking nut is used to fix the position of the adjustment slider, thereby completing the assembly of the entire iron core structure. The iron core structure can be installed at the corresponding position in the dry-type transformer to complete the installation of the iron core structure, and multiple groups of iron core structures are installed together in the transformer. At the same time, all components are assembled, which effectively simplifies the maintenance and repair steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the side surface of the present invention;

[0023] Figure 3 It is a schematic cross-sectional structural diagram of the core base of the present invention;

[0024] Figure 4 It is a schematic diagram of a partial cross-sectional structure of the iron core base of the present invention;

[0025] Figure 5 It is a schematic cross-sectional structural diagram of the receiving and connecting seat of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the core iron core assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the side cross-sectional structure of the core iron core assembly of the present invention.

[0028] In the figure: 1. core base; 101. base shell; 102. center partition; 103. partition buckle; 104. threaded buckle; 105. electrode interface; 106. external electrode rod; 107. connecting sleeve; 108. reset spring; 109. movable connecting rod; 1010. inner limit plate; 1011. positioning bolt; 2. receiving spring; 3. receiving connection seat; 31. connecting bottom plate; 32. embedded electrode; 3 3. Embedded shell; 34. Contact base; 35. Side slide groove; 36. Adjustment slider; 37. Inner receiving plate; 38. Contact electrode; 39. Locking bottom plate; 310. Locking screw; 311. Locking nut; 4. Core iron core assembly; 41. Assembly shell; 42. Nesting head; 43. Iron core shell; 44. Core iron core component; 45. Iron core electrode; 46. Shell splint; 47. Bolt countersunk hole; 48. Splint bolt. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 2 An assembled multi-phase iron core structure for a dry-type transformer includes an iron core base 1, a receiving spring 2, a receiving connection seat 3 and a core iron core assembly 4. The receiving spring 2 is installed inside the iron core base 1, the receiving connection seat 3 is installed on the upper side of the receiving spring 2, and the core iron core assembly 4 is installed inside the receiving connection seat 3.

[0031] See also Figure 3-Figure 4The core base 1 includes a base shell 101, a central partition 102, a partition buckle 103, a threaded buckle 104, an electrode interface 105, an external electrode rod 106, a connecting sleeve 107, a reset spring 108, a movable connecting rod 109, an inner limit plate 1010 and a positioning bolt 1011. The base shell 101 is provided with a central partition 102 inside, the partition buckle 103 is installed on the lower side of the central partition 102, the bottom of the base shell 101 is provided with a threaded buckle 104, the upper end of the inner part of the threaded buckle 104 is provided with an electrode interface 105, the inner part of the threaded buckle 104 is provided with an external electrode rod 106, a connecting sleeve 107 is provided on the side of the base shell 101, a reset spring 108 is provided in the connecting sleeve 107, an inner limit plate 1010 is provided at the end of the reset spring 108, an outer side of the inner limit plate 1010 is provided with a movable connecting rod 109, and a positioning bolt 1011 is installed at the outer bottom end of the connecting sleeve 107.

[0032] See also Figure 5 The receiving and connecting seat 3 includes a connecting base plate 31, an embedded electrode 32, an embedded shell 33, a contact base 34, a side slide groove 35, an adjusting slider 36, an inner receiving plate 37, a contact electrode 38, a locking base plate 39, a locking screw 310 and a locking nut 311. An embedded electrode 32 is provided at the bottom center of the connecting base plate 31, and the receiving spring 2 is installed on the outside of the embedded electrode 32. An embedded shell 33 is provided above the connecting base plate 31, and a contact base 34 is provided at the inner bottom end of the embedded shell 33. A side slide groove 35 is provided on the side of the embedded shell 33, and an adjusting slider 36 is installed in the side slide groove 35. An inner receiving plate 37 is provided on the inner side of the adjusting slider 36, and a contact electrode 38 is installed at the center of the inner receiving plate 37. A locking base plate 39 is provided on the outer side of the adjusting slider 36, and a locking screw 310 is provided on the locking base plate 39, and a locking nut 311 is installed on the locking screw 310.

[0033] See also Figure 6-Figure 7 The core iron core assembly 4 includes an assembly shell 41, a nesting head 42, an iron core shell 43, a core iron core component 44, an iron core electrode 45, an outer shell clamp 46, a bolt countersunk hole 47 and a clamp bolt 48. The bottom ends of the assembly shell 41 are respectively provided with a nesting head 42, and the nesting head 42 is nested and installed inside the embedded shell 33. The iron core shell 43 is provided at the center of the upper side of the assembly shell 41. The core iron core component 44 is installed inside the iron core shell 43. The iron core electrode 45 is installed at the bottom of the core iron core component 44. The outer shell clamp 46 is respectively installed on the left and right sides of the iron core shell 43. The four corners of the outer shell clamp 46 are respectively provided with bolt countersunk holes 47, and the clamp bolts 48 are installed in the bolt countersunk holes 47.

[0034] In order to better demonstrate the process of the assembled multi-phase iron core structure for dry-type transformers, this embodiment now proposes an installation method of the assembled multi-phase iron core structure for dry-type transformers, including the following steps:

[0035] Step 1: attach the shell clamping plate 46 to the left and right sides of the core shell 43, and nest the clamping plate bolts 48 in the bolt countersunk holes 47, and nest the shell clamping plate 46 and the core shell 43 in the assembly shell 41, and nest the bottom of the core electrode 45 in the nesting head 42;

[0036] Step 2: According to the size of each component in the core assembly 4, adjust the extension length of the movable connecting rod 109 on the side of the core base 1, and use the positioning bolt 1011 to penetrate and fix it, and install the receiving spring 2 and the receiving connection seat 3 inside the base shell 101;

[0037] Step 3: Nest the nesting head 42 in the core iron core assembly 4 in the embedded shell 33, and press down the inner receiving plate 37 to connect the contact electrode 38 with the contact base 34 on the lower side, and then use the locking nut 311 to fix the position of the adjustment slider 36, thereby completing the assembly of the entire iron core structure;

[0038] Step 4: Install the core structure at a corresponding position in the dry-type transformer.

[0039] Working principle of the present invention: The assembled multi-phase core structure and implementation method for dry-type transformers of the present invention are as follows: first, the shell clamp 46 is attached to the left and right sides of the core shell 43, and the clamp bolt 48 is nested and installed in the bolt countersunk hole 47, and the shell clamp 46 and the core shell 43 are nested and installed in the component shell 41, and the bottom of the core electrode 45 is nested in the nesting head 42, according to the size of each component in the core core assembly 4, the extension length of the movable connecting rod 109 on the side of the core base 1 is adjusted, and the positioning bolt 1011 is used to penetrate and fix it, the receiving spring 2 and the receiving connection seat 3 are installed inside the base shell 101, the nesting head 42 in the core core assembly 4 is nested and installed in the embedded shell 33, and the inner receiving plate 37 is pressed down to connect the contact electrode 38 with the contact base 34 on the lower side, and then the locking nut 311 is used to fix the position of the adjustment slider 36, thereby completing the assembly of the entire core structure.

[0040] In summary, the assembled multi-phase core structure and implementation method for dry-type transformers of the present invention are as follows: first, the shell clamp 46 is attached to the left and right sides of the core shell 43, and the clamp bolt 48 is nested and installed in the bolt countersunk hole 47, and the shell clamp 46 and the core shell 43 are nested and installed in the component shell 41, and the bottom of the core electrode 45 is nested in the nesting head 42, and the extension length of the movable connecting rod 109 on the side of the core base 1 is adjusted according to the size of each component in the core core assembly 4, and the positioning bolt 1011 is used to penetrate and fix it, and the receiving spring 2 and the receiving connection seat 3 are installed. Installed inside the base shell 101, the nesting head 42 in the core core assembly 4 is nested and installed in the embedded shell 33, and the inner receiving plate 37 is pressed down to connect the contact electrode 38 with the contact base 34 on the lower side, and then the locking nut 311 is used to fix the position of the adjustment slider 36, thereby completing the assembly of the entire core structure. The core structure is installed in the corresponding position in the dry-type transformer to complete the installation of the core structure. The structure of the present invention is complete and reasonable, and multiple groups of core structures are installed together in the transformer. At the same time, all components are assembled, which effectively simplifies the maintenance steps.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An assembled multi-phase iron core structure for a dry-type transformer, comprising an iron core base (1), a receiving spring (2), a receiving connection seat (3) and a core iron core assembly (4), characterized in that: A receiving spring (2) is installed inside the core base (1), a receiving connection seat (3) is installed on the upper side of the receiving spring (2), a core core assembly (4) is installed inside the receiving connection seat (3), and the receiving connection seat (3) comprises a connecting base plate (31), an embedded electrode (32), an embedded shell (33), a contact base (34), a side slide groove (35), an adjusting slider (36), an inner receiving plate (37), a contact electrode (38), a locking base plate (39), a locking screw (310) and a locking screw (311). A locking nut (311) is provided at the bottom center of the connecting bottom plate (31), an embedded shell (33) is provided above the connecting bottom plate (31), a contact base (34) is provided at the inner bottom end of the embedded shell (33), a side slide groove (35) is provided on the side of the embedded shell (33), an adjusting slider (36) is installed in the side slide groove (35), an inner receiving plate (37) is provided on the inner side of the adjusting slider (36), and a contact electrode (34) is installed at the center of the inner receiving plate (37). 38), a locking base plate (39) is provided on the outer side of the adjusting slider (36), a locking screw (310) is provided on the locking base plate (39), a locking nut (311) is installed on the locking screw (310), the core iron core assembly (4) comprises an assembly housing (41), a nesting head (42), an iron core housing (43), a core iron core component (44), an iron core electrode (45), an outer housing clamp (46), a bolt countersunk hole (47) and a clamp bolt (48), the assembly housing (41) Nesting heads (42) are respectively provided at both ends of the bottom, a core shell (43) is provided at the center of the upper side of the component shell (41), a core core component (44) is installed inside the core shell (43), a core electrode (45) is installed at the bottom of the core core component (44), a shell clamp (46) is respectively installed on the left and right sides of the core shell (43), bolt countersunk holes (47) are respectively provided at the four corners of the shell clamp (46), and clamp bolts (48) are installed in the bolt countersunk holes (47).

2. The assembled multiphase core structure for a dry-type transformer according to claim 1, characterized in that: The core base (1) comprises a base shell (101), a central partition (102), a partition buckle (103), a threaded buckle (104), an electrode interface (105), an external electrode rod (106), a connecting sleeve (107), a reset spring (108), a movable connecting rod (109), an inner limit plate (1010) and a positioning bolt (1011); a central partition (102) is provided inside the base shell (101); a partition buckle (103) is installed on the lower side of the central partition (102); and a threaded buckle is provided at the bottom of the base shell (101). A buckle (104) is provided, an electrode interface (105) is provided at the internal upper end of the threaded buckle (104), an external electrode rod (106) is provided inside the threaded buckle (104), a connecting sleeve (107) is provided on the side of the base shell (101), a reset spring (108) is provided inside the connecting sleeve (107), an inner limit plate (1010) is provided at the end of the reset spring (108), a movable connecting rod (109) is provided on the outer side of the inner limit plate (1010), and a positioning bolt (1011) is installed on the outer bottom end of the connecting sleeve (107).

3. The assembled multiphase core structure for a dry-type transformer according to claim 1, characterized in that: The nesting head (42) is nested and installed inside the embedded shell (33).

4. The assembled multiphase core structure for a dry-type transformer according to claim 1, characterized in that: The receiving spring (2) is installed on the outside of the embedded electrode (32).

5. A method for installing the assembled multiphase core structure for a dry-type transformer as claimed in claim 1, characterized in that: The steps include: S1: attach the shell clamp (46) to the left and right sides of the core shell (43), and nest the clamp bolts (48) in the bolt countersunk holes (47), and nest the shell clamp (46) and the core shell (43) in the assembly shell (41), and nest the bottom of the core electrode (45) in the nesting head (42); S2: According to the size of each component in the core assembly (4), the extension length of the movable connecting rod (109) on the side of the core base (1) is adjusted, and the positioning bolt (1011) is used to penetrate and fix, and the receiving spring (2) and the receiving connection seat (3) are installed inside the base shell (101); S3: The nesting head (42) in the core iron core assembly (4) is nested and installed in the embedded shell (33), and the inner receiving plate (37) is pressed down to connect the contact electrode (38) with the contact base (34) on the lower side, and then the position of the adjustment slider (36) is fixed with a locking nut (311), thereby completing the assembly of the entire iron core structure; S4: Install the core structure at a corresponding position in the dry-type transformer.

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