An isolation transformer with a parent-child structure and 250 terminals and overheat protection

Abstract

The present invention discloses an isolation transformer with a mother-daughter structure, 250 terminals and overheat protection, belonging to the field of power transformers. It includes a skeleton, a primary coil, a secondary coil, a fixing bracket and a temperature control component. The skeleton is divided into a skeleton A part and a skeleton B part. After the skeleton B part is embedded in the skeleton A part, a king-shaped mother-daughter structure skeleton is formed; a fixing bracket is installed on the periphery of the skeleton through fixing bolts; the primary coil is wound on the skeleton A part, the secondary coil is wound on the skeleton B, and the temperature control component is connected in series with the primary coil. The temperature control component is used for overheat protection of the transformer; both the skeleton A part and the skeleton B part are provided with 250 terminal inserts; by adopting the mother-daughter structure, during the production process of the transformer, the skeleton can be split into two parts, and when winding the primary and secondary coils, it can be disassembled and operated on different machines and equipment, effectively improving the production efficiency; by setting the temperature control component to control the working state of the transformer.

Description

Technical Field

[0001] The invention belongs to the field of power transformers, and more specifically relates to an isolation transformer with a parent-child structure, 250 terminals and overheat protection. Background Art

[0002] Transformers are widely used in various mechanical equipment industries. However, in the manufacturing process of existing transformers, the coil winding speed is slow because the transformer frame is a whole, which affects the production speed of the transformer. In addition, after the existing transformer is installed, the transformer terminals need to be reconnected, which affects the installation speed of the transformer. Most of the existing transformers do not have their own temperature control equipment, which makes it easy for the transformer to overheat and burn during use. Summary of the invention

[0003] One purpose of the present invention is to propose an isolation transformer with a sub-parent structure with 250 terminals and overheat protection. By adopting the sub-parent structure, the skeleton can be split into two parts during the transformer production process. When winding the primary and secondary coils, they can be disassembled and operated on different machines and equipment, effectively improving production efficiency; by setting a temperature control component, when the transformer coil temperature reaches 150°C, the temperature controller will automatically disconnect, the transformer will be in an open circuit state and stop working, and when the transformer temperature drops to about 100°C, the transformer will automatically return to the working state.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented by adopting the following technical scheme: an isolation transformer with a parent-child structure with 250 terminals and overheating protection, comprising a skeleton, a primary coil, a secondary coil, a fixed bracket and a temperature control component; the skeleton is divided into a skeleton A part and a skeleton B part, and the skeleton B part is embedded in the skeleton A part to form a W-shaped parent-child structure skeleton; the fixing bracket is installed on the periphery of the skeleton by fixing bolts; the primary coil is wound on the skeleton A part, and the secondary coil is wound on the skeleton B, the temperature control component and the primary coil are connected in series, and the temperature control component is used to protect the transformer from overheating; the skeleton A part and the skeleton B part are both provided with 250 terminal plugs.

[0005] Furthermore, the skeleton A part includes a first winding post, a first wiring part and a first connecting part, the first wiring part and the first connecting part are respectively arranged at the two ends of the first winding post, and the primary coil is wound around the first winding post; the skeleton B part includes a second winding post, a second wiring part and a second connecting part, the second wiring part and the second connecting part are respectively arranged at the two ends of the second winding post, and the secondary coil is wound around the second wiring part, and the first wiring part and the second wiring part are both provided with a plurality of 250 terminal plugs; the second connecting part is embedded in the first connecting part, and the first connecting part is surrounded by a partition extending toward the second connecting part.

[0006] Furthermore, the partition of the first connecting part is provided with a ground insulating paper slot, and the ground insulating paper slot is arranged on both sides of the partition.

[0007] Furthermore, the first wiring part and the second wiring part are both provided with a plurality of terminal slots, the first wiring part has a plurality of terminal slots vertically distributed on one side facing the left end of the fixed bracket, and the second wiring part has a plurality of terminal slots vertically distributed on one side facing the right end of the fixed bracket, the terminal slots of the first wiring part and the terminal slots of the second wiring part correspond one to one, and the two ground insulating paper slots are respectively facing the upper and lower ends of the fixed bracket; the ends of the lead wires of the primary coil and the secondary coil are connected to the corresponding 250 terminal plugs, and each of the 250 terminal plugs can be detachably connected to the corresponding terminal slot, and the 250 terminal plugs are in a U-shaped structure.

[0008] Furthermore, the temperature control component is placed close to the top of the primary coil, the temperature control component is a 150℃ / 10A normally closed recoverable temperature control switch, one end of the temperature control component is connected in series with the primary coil, and the other end of the temperature control component is connected to the 250 terminal plug corresponding to the input end of the primary coil.

[0009] Furthermore, the fixing bracket is made of silicon steel sheet and is fixed by fixing screws, and mounting brackets are also arranged around the fixing bracket.

[0010] Furthermore, the 250 terminal plug includes a winding contact surface, a terminal surface and a clamping portion, and the winding contact surface and the terminal surface are respectively vertically arranged on opposite sides of the clamping portion, so that the 250 terminal plug has a U-shaped structure; the winding contact surface is provided with a wire hole for inserting the lead wire of the primary coil or the secondary coil, and the terminal surface is used to connect the lead wire of the primary coil or the secondary coil and for connecting with external wires; the clamping portion is used to clamp with the terminal slot.

[0011] Furthermore, a middle portion of the clamping portion is provided with an inwardly recessed clamping port, and both ends of the clamping portion are provided with outwardly protruding cards; the first wiring portion and the second wiring portion both include a baffle and a wire plate, the baffle is arranged around the end of the first winding column or the second winding column, the wire plate is perpendicularly arranged on the baffle, and the edge of the baffle on one side connected to the wire plate is provided with a plurality of wire grooves, and the wire plate is provided with a plurality of evenly spaced T-shaped plates along the length direction, and the gap between any two adjacent T-shaped plates forms the terminal clamping slot; the clamping port is used to cover the T-shaped plate, and the card is used to insert into the terminal clamping slot.

[0012] Furthermore, the skeleton A and the skeleton B are both provided with a first reinforcing rib and a second reinforcing rib, the first reinforcing rib is vertically arranged on the baffle and opposite to the wire plate; a plurality of second reinforcing ribs are provided at the connection between the baffle and the wire plate and at the connection between the baffle and the first reinforcing rib, and the second reinforcing rib is a triangular structure.

[0013] Beneficial effects of the present invention:

[0014] The present invention adopts a parent-child structure, and the skeleton can be split into two parts during the transformer production process. When winding the primary and secondary coils, they can be disassembled and operated on different machines and equipment, effectively improving production efficiency; by setting the temperature control component, when the transformer coil temperature reaches 150°C, the thermostat will automatically disconnect, and the transformer will be in an open circuit state and will not work. When the transformer temperature drops to about 100°C, the transformer will automatically return to the working state. The transformer skeleton has multiple terminal slots, which can be embedded with 250 terminal plugs. The 250 terminal plugs adopt a U-shaped structure, which is convenient for connecting the winding copper wire with the 250 terminal, and also convenient for the transformer to quickly connect input and output during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the mother-and-child components after being disassembled according to one embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of a skeleton A according to one embodiment of the present invention;

[0017] Figure 3 A vertical schematic diagram of a transformer according to one embodiment of the present invention;

[0018] Figure 4 A schematic transverse diagram of a transformer according to one embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of a 250 terminal plug in one embodiment of the present invention;

[0020] Figure 6 This is a transformer circuit connection diagram of one embodiment of the present invention.

[0021] In the figure, 1-skeleton A, 111-first winding post, 112-first wiring part, 113-first connecting part, 2-skeleton B, 211-second winding post, 212-second wiring part, 213-second connecting part, 3-250 terminal plug, 311-bayonet, 312-card, 4-primary coil, 5-secondary coil, 6-fixing bracket, 7-fixing screw, 8-mounting bracket, 9-outer insulation paper, 10-temperature control component, 11-ground insulation paper slot, 12-mara glue, 13-terminal slot, 14-winding contact surface, 15-terminal surface, 16-reinforcement rib, 161-second reinforcement rib, 17-partition, 18-baffle, 19-wire plate, 191-T-plate. DETAILED DESCRIPTION

[0022] The following will disclose the embodiments of the present disclosure with the accompanying drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present disclosure. That is, in some embodiments of the present disclosure, these practical details are not necessary. In addition, in order to simplify the drawings, some existing conventional structures and elements will be shown in a simple schematic manner in the drawings.

[0023] like Figure 1-6 As shown, an isolation transformer with a parent-child structure with 250 terminals and overheat protection includes a skeleton, a primary coil 4, a secondary coil 5, a fixing bracket 6 and a temperature control component 10; the skeleton is divided into a skeleton A part 1 and a skeleton B part 2, and the skeleton B part 2 is embedded in the skeleton A part 1 to form a W-shaped parent-child structure skeleton; the skeleton A part 1 includes a first winding column 111, a first wiring part 112 and a first connecting part 113, the first wiring part 112 and the first connecting part 113 are respectively fixed to the two ends of the first winding column 111, the primary coil 4 is wound around the first winding column 111, and the primary coil 4 is wound around the outside of the iron core. The primary coil 4 and the secondary coil 5 are provided with an outer insulating paper 9 outside for the insulation of the coil, and the insulating paper and the coil are bonded together with Mara glue 12. The transformer comprises a detachable frame, which adopts a parent-child structure. The frame B part 2 is embedded in the groove of the frame A part 1 to assemble into a W-shaped frame. When winding the primary and secondary coils, it can be disassembled and operated on different machines and equipment, effectively improving production efficiency.

[0024] The skeleton B part 2 includes a second winding column 211, a second wiring part 212 and a second connecting part 213, the second wiring part 212 and the second connecting part 213 are respectively fixed to the two ends of the second winding column 211, the secondary coil 5 is wound on the second wiring part 212, and the secondary coil 5 is wound on the outside of the iron core. The first wiring part 112 and the second wiring part 212 are both provided with a plurality of 250 terminal plugs 3; the second connecting part 213 is embedded in the first connecting part 113, and the first connecting part 113 is surrounded by a partition 17 extending toward the second connecting part 213. There is a circle of 10mm wide partition 17 between the primary coil 4 and the secondary coil 5, which simultaneously ensures the primary insulation and creepage distance of the transformer.

[0025] The partition 17 of the first connecting part 113 is provided with a ground insulating paper slot 11, and the ground insulating paper slot 11 is arranged on both sides of the partition 17. The transformer coil and the iron core are insulated with the ground insulating paper slot 11, which makes it more convenient to put in and fix the insulating paper.

[0026] The skeleton adopts high temperature resistant FR530 material, which is reinforced glass fiber produced by DuPont Company of the United States. It is black, contains 30% glass fiber, and is fireproof. Material level: injection molding grade, coating grade, reinforcement grade, flame retardant grade, high flow. Glass fiber is an inorganic non-metallic material with excellent performance and a wide variety. Its advantages are good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength, but its disadvantages are brittleness and poor wear resistance. It is made of glass balls or waste glass as raw materials through high temperature melting, wire drawing, winding, weaving and other processes. The diameter of its single filament is a few microns to more than twenty microns, which is equivalent to 1 / 20-1 / 5 of a hair. Each bundle of fiber strands is composed of hundreds or even thousands of single filaments. Glass fiber is usually used as a reinforcing material in composite materials, electrical insulation materials and thermal insulation materials, circuit substrates and various fields of the national economy.

[0027] The first wiring part 112 and the second wiring part 212 are both provided with a plurality of terminal slots 13. The first wiring part 112 is vertically distributed with a plurality of terminal slots 13 on one side facing the left end of the fixed bracket 6, and the second wiring part 212 is vertically distributed with a plurality of terminal slots 13 on one side facing the right end of the fixed bracket 6. The fixed bracket 6 is made of silicon steel sheet and is fixed by a fixing screw 7. A mounting bracket 8 is also provided around the fixed bracket 6. The terminal slots 13 of the first wiring part 112 and the terminal slots 13 of the second wiring part 212 correspond to each other one by one, and the two ground insulating paper slots 11 are respectively facing the upper and lower ends of the fixed bracket 6; the ends of the lead wires of the primary coil 4 and the secondary coil 5 are connected to the corresponding 250 terminal plugs 3, and each 250 terminal plug 3 is detachably connected to the corresponding terminal slot 13, and the 250 terminal plug 3 is in a U-shaped structure.

[0028] The frame is provided with a fixing bracket 6 made of silicon steel sheet by fixing bolts, and the fixing bracket 6 is also provided with mounting brackets 8 around it to facilitate the installation of the transformer; the temperature control component 10 is connected in series with the primary coil 4, and the temperature control component 10 is used to protect the transformer from overheating. The temperature control component 10 is a 150℃ / 10A normally closed recoverable temperature control switch, and the temperature control component 10 adopts a thermostat. The temperature control component 10 is placed close to the top of the primary coil 4, one end of the temperature control component 10 is connected in series with the primary coil 4, and the other end of the temperature control component 10 is connected to the 250 terminal plug 3 corresponding to the input end of the primary coil 4. After winding the primary coil 4, a temperature control component 10 is placed close to the primary coil 4 at the top of the primary coil 4. One end of the connecting wire of the temperature control component 10 is connected in series with the 0V end of the primary coil 4 of the transformer, and the other end of the temperature control component 10 is connected to the 250 terminal plug 3 corresponding to the input end of the primary coil 4. When the temperature of the primary coil 4 reaches 150°C, the temperature control component 10 will automatically disconnect, and the transformer will be in an open circuit state and will not work. When the temperature of the primary coil 4 drops to about 100°C, the transformer will automatically return to the working state.

[0029] The 250 terminal plug 3 includes a winding contact surface 14, a terminal surface 15 and a clamping portion 31. The winding contact surface 14 and the terminal surface 15 are respectively arranged vertically on opposite sides of the clamping portion 31, so that the 250 terminal plug 3 is in a U-shaped structure; the winding contact surface 14 is provided with a wire hole for inserting the lead wire of the primary coil 4 or the secondary coil 5, and the terminal surface 15 is used to connect the lead wire of the primary coil 4 or the secondary coil 5 and to connect with external wires; the clamping portion 31 is used to clamp with the terminal card slot 13. The skeleton A part 1 and the skeleton B part 2 are provided with a plurality of terminal card slots 13, with no less than 2 terminal card slots 13 on each side. The 250 terminal plug 3 adopts a U-shaped structure, and each terminal card slot 13 can be embedded with a 250 terminal plug 3; the rear end of the 250 terminal plug 3 is connected with the corresponding coil and used as the voltage output end of the transformer. It is convenient for the winding copper wire to be connected with the 250 terminal, and it is also convenient for the transformer to quickly connect the input and output during use. The middle of the clamping portion 31 is provided with an inwardly recessed clamping port 311, and both ends of the clamping portion 31 are provided with outwardly protruding clamping cards 312; the first wiring portion 112 and the second wiring portion 212 both include a baffle 18 and a wire plate 19, the baffle 18 is arranged around the end of the first winding pole 111 or the second winding pole 211, the wire plate 19 is arranged perpendicular to the baffle 18, and the edge of the baffle 18 on one side connected to the wire plate 19 is provided with a plurality of wire grooves 181, which facilitate the guiding of the primary coil (4) or the secondary coil (5). The wires are led out and fixed, and the wire plate 19 is provided with a plurality of evenly spaced T-shaped plates 191 along the length direction, and the gap between any two adjacent T-shaped plates 191 forms a terminal slot 13; the bayonet 311 is used to cover the T-shaped plate 191, and the card 312 is used to insert the terminal slot 13, and a clamping structure is formed with the three adjacent T-shaped plates 191 through the bayonet 311 and the card 312, respectively, which is convenient for assembly and disassembly and has a firm connection. The installation position of the 250 terminal plug 3 is more flexible, which can adapt to the actual situation of different lead-out line positions of different products.

[0030] The skeleton A part 1 and the skeleton B part 2 are both provided with a first reinforcing rib 16 and a second reinforcing rib 161. The first reinforcing rib 16 is vertically arranged on the baffle 18 and is opposite to the wire plate 19. The connection between the baffle 18 and the wire plate 19 and the connection between the baffle 18 and the first reinforcing rib 16 are both provided with a plurality of second reinforcing ribs 161, and the second reinforcing ribs 161 are in a triangular structure. The first reinforcing rib 16 and the wire plate 19 cooperate to enhance the structural strength of the edge of the core installation cavity of the skeleton A part 1 and the skeleton B part 2. The cooperation of a plurality of second reinforcing ribs 161 can greatly enhance the structural strength of the connection between the baffle 18 and the wire plate 19 and the connection between the baffle 18 and the first reinforcing rib 16. The second reinforcing rib 161 is in a triangular structure, which can better disperse stress and improve the structural strength of the edge of the wire groove 181.

[0031] It should be understood that the detailed description of the technical solutions of the present invention by means of the preferred embodiments is illustrative rather than restrictive. A person skilled in the art may modify the technical solutions described in the embodiments, or replace some of the technical features by equivalents, based on reading the specification of the present invention; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An isolation transformer with a parent-child structure and 250 terminals and overheat protection, characterized in that: It includes a skeleton, a primary coil (4), a secondary coil (5), a fixing bracket (6) and a temperature control component (10); the skeleton is divided into a skeleton A part (1) and a skeleton B part (2), and after the skeleton B part (2) is embedded in the skeleton A part (1), a king-shaped mother-child structure skeleton is formed; the fixing bracket (6) is installed on the periphery of the skeleton through fixing bolts; the primary coil (4) is wound on the skeleton A part (1), the secondary coil (5) is wound on the skeleton B, the temperature control component (10) is connected in series with the primary coil (4), and the temperature control component (10) is used for overheat protection of the transformer; both the skeleton A part (1) and the skeleton B part (2) are provided with 250 terminal inserts (3); The skeleton A part (1) includes a first winding column (111), a first wiring part (112) and a first connecting part (113), the first wiring part (112) and the first connecting part (113) are respectively arranged at both ends of the first winding column (111), and the primary coil (4) is wound on the first winding column (111); The skeleton B part (2) includes a second winding column (211), a second wiring part (212) and a second connecting part (213), the second wiring part (212) and the second connecting part (213) are respectively arranged at both ends of the second winding column (211), the secondary coil (5) is wound on the second wiring part (212), and both the first wiring part (112) and the second wiring part (212) are provided with a plurality of 250 terminal inserts (3); the second connecting part (213) is embedded in the first connecting part (113), and partitions (17) extending towards the second connecting part (213) are arranged around the first connecting part (113); The fixing bracket (6) is made of silicon steel sheets and is fixed by fixing screws (7), and mounting feet (8) are also arranged around the fixing bracket (6); The 250 terminal insert (3) includes a winding contact surface (14), a terminal surface (15) and a clamping part (31), the winding contact surface (14) and the terminal surface (15) are respectively vertically arranged on opposite sides of the clamping part (31), so that the 250 terminal insert (3) has a U-shaped structure; the winding contact surface (14) is provided with a wire passing hole for passing the lead wire of the primary coil (4) or the secondary coil (5), the terminal surface (15) is used for connecting the lead wire of the primary coil (4) or the secondary coil (5) and for connecting with an external wire; the clamping part (31) is used for clamping with a terminal card slot (13); The middle of the clamping portion (31) is provided with an inwardly recessed clamping port (311), and both ends of the clamping portion (31) are provided with outwardly protruding clamping ports (312); the first wiring portion (112) and the second wiring portion (212) both comprise a baffle (18) and a wire plate (19); the baffle (18) is arranged around the end of the first winding pole (111) or the second winding pole (211); the wire plate (19) is arranged perpendicular to the baffle (18); a plurality of wire grooves (181) are provided on the edge of one side of the baffle (18) connected to the wire plate (19); the wire plate (19) is provided with a plurality of evenly spaced T-shaped plates (191) along the length direction; the gap between any two adjacent T-shaped plates (191) forms the terminal clamping slot (13); the clamping port (311) is used to cover the T-shaped plate (191), and the clamping port (312) is used to insert into the terminal clamping slot (13).

2. The isolation transformer with a parent-child structure and 250 terminals and overheat protection according to claim 1 is characterized in that: The partition (17) of the first connection portion (113) is provided with a ground-insulating paper slot (11), and the ground-insulating paper slot (11) is arranged on both sides of the partition (17).

3. The isolation transformer with a parent-child structure and 250 terminals and overheat protection according to claim 2 is characterized in that: The first wiring portion (112) and the second wiring portion (212) are both provided with a plurality of terminal slots (13); the first wiring portion (112) is provided with a plurality of terminal slots (13) vertically distributed on a side facing the left end of the fixed bracket (6); the second wiring portion (212) is provided with a plurality of terminal slots (13) vertically distributed on a side facing the right end of the fixed bracket (6); the terminal slots (13) of the first wiring portion (112) and the terminal slots (13) of the second wiring portion (212) correspond to each other one by one, and the two ground-insulating paper slots (11) are respectively directed toward the upper and lower ends of the fixed bracket (6); the ends of the lead wires of the primary coil (4) and the secondary coil (5) are both connected to the corresponding 250 terminal plugs (3); each of the 250 terminal plugs (3) is detachably connected to the corresponding terminal slot (13); and the 250 terminal plugs (3) are in a U-shaped structure.

4. The isolation transformer with a parent-child structure and 250 terminals and overheat protection according to claim 1 is characterized in that: The temperature control component (10) is placed close to the top of the primary coil (4); the temperature control component (10) is a 150°C / 10A normally closed recoverable temperature control switch; one end of the temperature control component (10) is connected in series with the primary coil (4); the other end of the temperature control component (10) is connected to a 250 terminal plug (3) corresponding to the input end of the primary coil (4).

5. The isolation transformer with a parent-child structure and 250 terminals and overheat protection according to claim 1 is characterized in that: The frame A part (1) and the frame B part (2) are both provided with a first reinforcing rib (16) and a second reinforcing rib (161); the first reinforcing rib (16) is vertically arranged on the baffle (18) and is opposite to the line plate (19); a plurality of second reinforcing ribs (161) are provided at the connection between the baffle (18) and the line plate (19) and at the connection between the baffle (18) and the first reinforcing rib (16); the second reinforcing ribs (161) are in a triangular structure.

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