High-voltage transformer with high dielectric strength

Abstract

The high-voltage transformer comprises an insulating framework, an iron core and a fixing support, the circle center of the insulating framework is sleeved with the iron core, the insulating framework is sleeved with the fixing support, hole grooves are formed in the middles of the two ends of the insulating framework, and the hole grooves are matched with the iron core; the outer wall of the iron core and the fixing support are attached to each other, a coil is wound around the outer wall of the insulating framework, and a Dupont insulating paper layer is bonded to the outer wall of the coil. When the high-voltage transformer with the high dielectric strength is used, the insulating framework serves as an inner framework structure of the high-voltage transformer, a compact structural design is adopted on the whole, the design body type of the high-voltage transformer can be relatively reduced, and the connecting contacts serve as electric connecting contacts and are evenly erected at the two ends of the outer wall of the Dupont insulating paper layer. Subsequent users can sequentially conduct connection and installation according to own needs, the connection difficulty of the high-voltage transformer is reduced, and the high-voltage transformer is convenient to use by the users.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a high-voltage transformer with high electrical strength. Background Art

[0002] As the use of electrical medical equipment continues to expand, from hospitals and nursing homes to home monitoring and life support, there is increasing concern about operator and patient safety. Medical equipment has strict design rules, good design practices, and multiple safety standards. Transformers have many uses in medical equipment, from stepping up or down the alternating current (AC) voltage, or breaking the ground loop of sensitive sensor interfaces, to impedance matching, interstage coupling, and achieving conversion between single-ended and balanced circuits in medical equipment.

[0003] The invention discloses a medical isolation transformer with an insulating paper structure (CN209962864U), including a transformer core, a primary winding, a secondary winding and an interlayer insulating paper, wherein the primary winding is wound on the outside of the transformer core, the interlayer insulating paper is arranged on the outside of the primary winding, the secondary winding is wound on the outside of the interlayer insulating paper, and the outer side of the secondary winding is covered with an external insulating layer. The structural design of the invention is novel, and the parasitic capacitance between the primary and secondary windings is completely avoided; and the heat between the transformer core and the primary winding is transferred to the outside of the transformer through the window part for heat dissipation; in addition, after the closed insulating structure is cancelled, the temperature rise of the primary winding is reduced, the transformer efficiency is improved, and the overall size of the product is reduced. However, in use, the conventional transformer is affected by the structural design, and its overall size is large, and it occupies a large use area in the electrical medical equipment, thereby affecting the design size of the electrical medical equipment, and some transformers have limited adaptability with the circuit board of the electrical medical equipment, and can only be installed by selecting a special transformer according to the circuit board of the electrical medical equipment, which will undoubtedly increase the maintenance difficulty of the electrical medical equipment and is inconvenient for users to use.

[0004] To this end, we propose a high voltage transformer with high electrical strength. Summary of the invention

[0005] The object of the present invention is to provide a high voltage transformer with high electrical strength to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-voltage transformer with high electrical strength, comprising an insulating frame, an iron core and a fixed bracket, the iron core is sleeved at the center of the insulating frame, and the fixed bracket is sleeved on the outside of the insulating frame, holes are opened in the middle of both ends of the insulating frame, and the holes and the iron core match each other, the outer wall of the iron core is in contact with the fixed bracket, the outer wall of the insulating frame is wound with a coil, and the outer wall of the coil is bonded with a DuPont insulating paper layer.

[0007] Preferably, connecting columns are fixed around the lower end of the insulating frame, and reinforcing ribs are hot-melted at the connection between the connecting columns and the insulating frame.

[0008] Preferably, a positioning hole is provided in the middle of the insulating frame, and the inner wall of the positioning hole is used for the center core of the iron core to penetrate.

[0009] Preferably, both sides of the lower end of the fixing bracket are provided with pre-opened grooves, and an upper pressing block is inserted into the top of the inner wall of the fixing bracket, and the upper pressing block is pressed into the hole groove at the upper end of the insulating frame.

[0010] Preferably, the coil is welded with a plurality of connection contacts in sequence from the inside to the outside, and the connection contacts are bonded and fixed along both ends of the outer wall of the DuPont insulation paper layer.

[0011] Preferably, the bottom of the lower end of the insulating frame is connected to a base, and a clamp is wrapped around the middle of the outer wall of the base, a buckle is provided at the connection between the clamp and the base, and through holes are opened around the outer wall of the base.

[0012] Preferably, the base is fastened with bolts through through holes to the connecting columns at the insulating frame, a positioning frame is embedded in the middle of the inner wall of the base, and a docking groove is provided at the upper end of the positioning frame, and the base is mounted on a predetermined medical device circuit board.

[0013] Preferably, the positioning frame is snap-connected with a slot provided on the fixing bracket via a docking slot.

[0014] Preferably, a heat dissipation fin for heat dissipation protection is laid in the middle of the positioning frame, and the heat dissipation fin provides heat exchange protection for the heat source of the high-voltage transformer.

[0015] Preferably, the operation method is as follows: insert the iron core into the positioning hole opened along the middle part of the insulating frame, close the upper pressure block, insert the fixed bracket along the outer wall of the upper pressure block and the iron core, and at the same time, fasten the through holes opened around the outer wall of the base with the connecting columns at the insulating frame with bolts. In order to strengthen the connection strength between the connecting columns and the insulating frame, reinforcing ribs are hot-melted at the connection between the connecting columns and the insulating frame. At the same time, the positioning frame is snap-connected with the groove opened at the fixed bracket through the docking groove. Then, a splint is selected, and the connection between the splint and the base is fixed by a buckle. Finally, the bottom of the splint is mounted on the predetermined medical device circuit board.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: when the high-voltage transformer with high dielectric strength is in use, the insulating skeleton serves as the inner skeleton structure of the high-voltage transformer, and the overall compact structural design is adopted, which can relatively reduce the design size of the high-voltage transformer; the connecting contacts serve as electrical contacts and are evenly arranged at both ends of the outer wall of the DuPont insulating paper layer, which can meet the needs of subsequent users to connect and install in sequence according to their own needs, thereby reducing the connection difficulty of the high-voltage transformer and facilitating the use of users; at the same time, the DuPont insulating paper layer serves as an outer insulating layer, and its dielectric strength is increased compared to conventional insulating paper.

[0017] The fixing bracket serves as an outer frame to protect the insulating skeleton and the iron core. The inner wall of the fixing bracket contacts the outer wall of the upper pressing block and the iron core. The structure is compact and the connection strength is high, ensuring that the equipment can be used for a long time.

[0018] The base serves as a supporting device for the upper high-voltage transformer. The structure of the base matches the bottom structure of the insulating frame, and the connection is connected by bolt fastening. This connection method is simple to operate and convenient for users to connect and install the base and the insulating frame.

[0019] The heat dissipation fin acts as a heat exchange device to conduct heat to the high-voltage transformer, thereby expanding the heat dissipation range of the high-voltage transformer and improving the heat dissipation rate of the high-voltage transformer. The positioning frame is connected to the slot opened at the fixed bracket through the docking groove, thereby strengthening the connection strength between the base and the insulating frame and further improving the compactness of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the split structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the base structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the connection structure between the insulating frame and the fixed support of the present invention;

[0024] Figure 5 It is a schematic diagram of the separate structure of the insulating frame and the fixing bracket of the present invention.

[0025] In the figure: 1. Insulation frame; 11. Coil; 12. Connecting column; 13. Reinforcing rib; 14. Positioning hole; 15. DuPont insulation paper layer; 16. Connecting contact; 2. Iron core; 3. Fixed bracket; 31. Upper pressure block; 32. Pre-cut groove; 4. Base; 41. Clamp; 42. Buckle; 43. Through hole; 5. Positioning frame; 51. Docking groove; 52. Heat dissipation fin. DETAILED DESCRIPTION

[0026] 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.

[0027] Example 1

[0028] See also Figure 1-5 The present invention provides a technical solution: a high-voltage transformer with high dielectric strength, comprising an insulating skeleton 1, an iron core 2 and a fixing bracket 3, wherein the iron core 2 is sleeved at the center of the insulating skeleton 1, and the fixing bracket 3 is sleeved on the outside of the insulating skeleton 1, holes are provided in the middle of both ends of the insulating skeleton 1, and the holes match the iron core 2, the outer wall of the iron core 2 fits with the fixing bracket 3, a coil 11 is wound around the outer wall of the insulating skeleton 1, and a DuPont insulating paper layer 15 is bonded to the outer wall of the coil 11, connecting columns 12 are fixed around the lower end of the insulating skeleton 1, and a reinforcing rib 13 is hot-melted at the connection between the connecting column 12 and the insulating skeleton 1, a positioning hole 14 is provided in the middle of the insulating skeleton 1, and the inner wall of the positioning hole 14 is for the center core of the iron core 2 to penetrate, a plurality of connecting contacts 16 are welded in sequence from the inside to the outside of the coil 11, and the connecting contacts 16 are bonded and fixed along the two ends of the outer wall of the DuPont insulating paper layer 15, The insulating skeleton 1 serves as the inner skeleton structure of the high-voltage transformer, and adopts a compact structural design as a whole, which can relatively reduce the design size of the high-voltage transformer. At the same time, the insulating skeleton 1 is connected to the base 4 by a splicing connection method, and its connecting column 12 can be well matched and connected with the base 4. In order to strengthen the connection strength between the connecting column 12 and the insulating skeleton 1, a reinforcing rib 13 is hot-melted at the connection between the connecting column 12 and the insulating skeleton 1 to ensure that the two have a high connection strength and improve the service life of the high-voltage transformer. The connecting contacts 16 serve as electrical contacts and are evenly arranged at both ends of the outer wall of the DuPont insulating paper layer 15, which can meet the needs of subsequent users to connect and install in sequence according to their own needs, reduce the connection difficulty of the high-voltage transformer, and facilitate user use. At the same time, the DuPont insulating paper layer 15 serves as an outer insulating layer, and its electrical strength is increased compared to conventional insulating paper.

[0029] Example 2

[0030] See also Figure 1-5The present invention provides a technical solution: a high-voltage transformer with high electrical strength, wherein pre-opened grooves 32 are provided on both sides of the lower end of a fixed bracket 3, and an upper pressing block 31 is inserted into the top of the inner wall of the fixed bracket 3, and the upper pressing block 31 is pressed into the hole groove at the upper end of the insulating skeleton 1. The fixed bracket 3 serves as an outer frame to protect the insulating skeleton 1 and the iron core 2. The inner wall of the fixed bracket 3 is in contact with the outer wall of the upper pressing block 31 and the iron core 2. The structure is compact and the connection strength is high, ensuring that the equipment can be used for a long time.

[0031] Example 3

[0032] See also Figure 1-5 The present invention provides a technical solution: a high-voltage transformer with high electrical strength, wherein a base 4 is connected to the bottom of the lower end of an insulating frame 1, and a clamping plate 41 is wound around the middle of the outer wall of the base 4, a buckle 42 is provided at the connection between the clamping plate 41 and the base 4, and through holes 43 are provided around the outer wall of the base 4, and the base 4 is bolted to the connecting column 12 at the insulating frame 1 through the through hole 43, and the base 4 is mounted on a predetermined medical device circuit board, and the base 4 serves as a bearing device for the upper high-voltage transformer, and the structure of the base 4 matches the bottom structure of the insulating frame 1, and the connection is connected by bolts. This connection method is simple to operate and is convenient for users to connect and install the base 4 and the insulating frame 1, and the base 4 serves as a connecting component with the predetermined medical device circuit board, and the base 4 is provided with a clamping plate 41 with high adaptability, and the clamping plate 4 The bottom bracket is mounted on the predetermined medical device circuit board. The clamping plate 41 is connected to the base 4 by means of a buckle 42. The connection strength of the connection is high, the installation is convenient, and the user is convenient to use. A positioning frame 5 is embedded in the middle of the inner wall of the base 4, and a docking groove 51 is provided on the upper end of the positioning frame 5. The positioning frame 5 is connected by clamping with the slot 32 provided at the fixed bracket 3 through the docking groove 51. A heat dissipation fin 52 for heat dissipation protection is laid in the middle of the positioning frame 5. The heat dissipation fin 52 provides heat exchange protection for the heat source of the high-voltage transformer. The heat dissipation fin 52 is used as a heat exchange device to conduct heat to the high-voltage transformer, expand the heat dissipation range of the high-voltage transformer, and improve the heat dissipation rate of the high-voltage transformer. The positioning frame 5 is connected by clamping with the slot 32 provided at the fixed bracket 3 through the docking groove 51, so as to strengthen the connection strength between the base 4 and the insulating frame 1 and further improve the compactness of the overall structure.

[0033] Working principle: For this type of high-voltage transformer with high dielectric strength, first, the core 2 is inserted into the positioning hole 14 opened along the middle of the insulating frame 1. At this time, the upper pressure block 31 is closed, and the fixed bracket 3 is inserted along the outer wall of the upper pressure block 31 and the core 2. At the same time, the through holes 43 opened around the outer wall of the base 4 are fastened with bolts to the connecting column 12 at the insulating frame 1. In order to strengthen the connection strength between the connecting column 12 and the insulating frame 1, a reinforcing rib 13 is hot-melted at the connection between the connecting column 12 and the insulating frame 1. At the same time, the positioning frame 5 is snap-connected with the slot 32 opened at the fixed bracket 3 through the docking groove 51. Then, a suitable splint 41 is selected, and the connection between the splint 41 and the base 4 is fixed by a buckle 42. Finally, the bottom of the splint 41 is mounted on the predetermined medical device circuit board.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage transformer with high electrical strength, comprising an insulating frame (1), an iron core (2) and a fixing bracket (3), characterized in that: An iron core (2) is sleeved at the center of the insulating frame (1), and a fixed bracket (3) is sleeved on the outside of the insulating frame (1); holes are provided in the middle of both ends of the insulating frame (1), and the holes match the iron core (2); the outer wall of the iron core (2) and the fixed bracket (3) fit each other; a coil (11) is wound around the outer wall of the insulating frame (1), and a DuPont insulating paper layer (15) is bonded to the outer wall of the coil (11).

2. A high voltage transformer with high dielectric strength according to claim 1, characterized in that: Connecting columns (12) are fixed around the lower end of the insulating frame (1), and reinforcing ribs (13) are hot-melted at the connection between the connecting columns (12) and the insulating frame (1).

3. A high voltage transformer with high dielectric strength according to claim 2, characterized in that: The coil (11) is welded with a plurality of connection contacts (16) in sequence from the inside to the outside, and the connection contacts (16) are bonded and fixed along both ends of the outer wall of the DuPont insulation paper layer (15).

4. A high voltage transformer with high dielectric strength according to claim 3, characterized in that: A positioning hole (14) is provided in the middle of the insulating frame (1), and the inner wall of the positioning hole (14) is used for the center core of the iron core (2) to penetrate.

5. A high voltage transformer with high dielectric strength according to claim 4, characterized in that: Pre-opened grooves (32) are provided on both sides of the lower end of the fixing bracket (3), and an upper pressing block (31) is inserted into the top of the inner wall of the fixing bracket (3), and the upper pressing block (31) is pressed into the hole groove at the upper end of the insulating frame (1).

6. A high voltage transformer with high dielectric strength according to claim 5, characterized in that: The bottom of the lower end of the insulating frame (1) is connected to a base (4), and a clamping plate (41) is wrapped around the middle of the outer wall of the base (4), a buckle (42) is provided at the connection between the clamping plate (41) and the base (4), and through holes (43) are opened around the outer wall of the base (4).

7. A high voltage transformer with high dielectric strength according to claim 6, characterized in that: The base (4) is boltedly connected to the connecting column (12) at the insulating frame (1) through the through hole (43); a positioning frame (5) is embedded in the middle of the inner wall of the base (4); and a docking groove (51) is provided at the upper end of the positioning frame (5); and the base (4) is mounted on a predetermined medical device circuit board.

8. A high voltage transformer with high dielectric strength according to claim 7, characterized in that: The positioning frame (5) is snap-connected with the opening groove (32) at the fixing bracket (3) via the docking groove (51).

9. A high voltage transformer with high dielectric strength according to claim 8, characterized in that: A heat dissipation fin (52) for heat dissipation protection is laid in the middle of the positioning frame (5), and the heat dissipation fin (52) provides heat exchange protection for the heat source of the high-voltage transformer.

10. A high voltage transformer with high dielectric strength according to claim 9, characterized in that: The operation method is as follows: insert the iron core (2) through the positioning hole (14) opened in the middle of the insulating frame (1), close the upper pressing block (31), insert the fixing bracket (3) along the outer wall of the upper pressing block (31) and the iron core (2), and at the same time, bolt the through holes (43) opened around the outer wall of the base (4) and the connecting column (12) at the insulating frame (1) to connect them. In order to strengthen the connection strength between the connecting column (12) and the insulating frame (1), a reinforcing rib (13) is hot-melted at the connection between the connecting column (12) and the insulating frame (1). At the same time, the positioning frame (5) is snap-connected with the slot (32) opened at the fixing bracket (3) through the docking slot (51), and then the clamping plate (41) is selected, and the connection between the clamping plate (41) and the base (4) is fixed by a buckle (42), and finally the bottom of the clamping plate (41) is mounted on the predetermined medical device circuit board.

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