A conveniently installed three-phase integrated current transformer

Abstract

The present invention discloses a convenient-to-install three-phase integrated current transformer, comprising a mounting base, a mounting plate, a transformer body, a wiring shield, a mounting plug plate, a first connecting rod, a first spring and a connecting pull plate; mounting screw holes are arranged on both sides of the mounting plate, mounting screw holes are threadedly connected with mounting bolts, the mounting plate is fixedly mounted on the mounting base by the mounting bolts, the transformer body is fixedly arranged at the center position of the upper end of the mounting plate, wiring shields are rotatably connected on both sides of the transformer body, and wiring terminals are arranged under the wiring shields. The present invention provides a support block to guide and support the movement of the mounting plug plate, and at the same time, to limit the installation of the mounting base, thereby improving the installation stability of the mounting base, and pulling the pressure plate upward to release the limit on the connecting pull plate, and the mounting plug plate rebounds and is clamped on the base under the action of the first spring, thereby realizing the fixed installation of the mounting base.

Description

Technical Field

[0001] The invention belongs to the technical field of current transformers, and in particular relates to a three-phase integrated current transformer that is easy to install. Background Art

[0002] In the power supply lines, the current and voltage vary greatly, ranging from a few amperes to tens of thousands of amperes. In order to facilitate the measurement of secondary instruments, they need to be converted into a relatively uniform current; in addition, the voltage on the line is relatively high, and it is very dangerous to measure directly, so current transformers can be used to play the role of current conversion and electrical isolation. Current transformers can convert a large primary current into a smaller secondary current through a certain transformation ratio for protection, measurement and other purposes. They are widely used in current measurement, power metering, signal sampling and microcomputer protection of electrical equipment in AC power systems.

[0003] Most existing current transformers are fixed and installed by bolts. Not only is the installation operation cumbersome and requires the use of tools, but also the bolts need to be removed one by one before the transformer can be removed during disassembly, which makes the installation or replacement of the transformer inefficient. Summary of the invention

[0004] The purpose of the present invention is to provide a three-phase integrated current transformer that is easy to install. The pushing seat is driven to move downward by pressing the pressure plate, and the pushing seat drives the connecting pull plate to move outward, driving the two groups of installation plug plates to move outward, and the installation base is installed on the base. The support block is provided to guide and support the movement of the installation plug plate, and at the same time, it plays a role of limiting the installation of the installation base, thereby improving the stability of the installation of the installation base. The pressure plate is pulled upward to release the limit on the connecting pull plate, and the installation plug plate rebounds and is clamped on the base under the action of the first spring, thereby realizing the fixed installation of the installation base, and the installation and disassembly are simple and convenient.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A conveniently installed three-phase integrated current transformer comprises a mounting base, a mounting plate, a transformer body, a wiring shield, a mounting plug plate, a first connecting rod, a first spring and a connecting pull plate; mounting screw holes are arranged on both sides of the mounting plate, mounting bolts are threadedly connected to the mounting screw holes, the mounting plate is fixedly mounted on the mounting base by the mounting bolts, a transformer body is fixedly arranged at the center position of the upper end of the mounting plate, wiring shields are rotatably connected to both sides of the transformer body, and wiring terminals are arranged below the wiring shields;

[0007] A long strip mounting groove is provided at the center position of the lower end of the mounting base, and a first connecting rod is provided on the side walls at both ends of the mounting groove, the first connecting rod slides through and is connected to the lower part of the mounting base, one end of the first connecting rod located in the mounting groove is fixedly connected to the mounting plug plate, and one end of the first connecting rod located on the outer side of the mounting base is fixedly connected to the connecting pull plate, a first spring is sleeved on the outer periphery of the first connecting rod, one end of the first spring is fixedly connected to the side wall of the mounting groove, and the other end of the first spring is fixedly connected to the mounting plug plate, and a downward inclined chamfer is provided on the side of the mounting plug plate away from the first connecting rod.

[0008] As a further solution of the present invention: a mounting groove is provided at the center of the bottom of the mounting groove, a heat dissipation through hole is provided at the center of the bottom of the mounting groove, and the heat dissipation through hole is located directly below the transformer body.

[0009] As a further solution of the present invention: two groups of support blocks are symmetrically arranged in the installation groove, and the upper surface of the installation plug plate is slidably fitted with the lower surface of the support block.

[0010] As a further solution of the present invention: a cooling fan is arranged in the installation groove, the cooling fan is installed on the support block, and the cooling fan blows air in a direction toward the cooling through hole.

[0011] As a further solution of the present invention: a ventilation hole is provided on the side wall of the installation groove, and the opening direction of the ventilation hole is perpendicular to the first connecting rod.

[0012] As a further solution of the present invention: fixed plates are horizontally fixedly installed on both sides of the mounting base, at least two groups of second connecting rods are slidably connected through the fixed plates, the upper ends of the second connecting rods are connected to pressure plates, and the lower ends of the second connecting rods are connected to push seats.

[0013] As a further solution of the present invention: a second spring is sleeved on the outer periphery of the second connecting rod, one end of the second spring is connected to the pressure plate, and the other end of the second spring is connected to the fixed plate.

[0014] As a further solution of the present invention: both ends of the mounting base are provided with limit plates, the limit plates are located above the pushing seat, and the distance between the limit plates and the connecting pull plate is less than the length of the pushing seat.

[0015] The beneficial effects of the present invention are as follows: the mounting plate is fixedly mounted on the mounting base by mounting bolts, the wiring shield is provided to effectively protect the transformer wiring terminals, the mounting groove and the heat dissipation through-hole are provided at the center of the bottom of the mounting groove, the transformer body is effectively cooled, the heat dissipation fan is provided to blow air to the transformer body for heat dissipation, and the working performance of the transformer body is improved, the push seat is driven to move downward by pressing the pressing plate, the push seat drives the connecting pull plate to move outward, and drives the two sets of mounting plug plates to move outward, the mounting base is mounted on the base, and the support block is provided to guide and support the movement of the mounting plug plates The second spring is provided to automatically rebound the pushing seat upward and simultaneously effectively prevent the installation base from being loosened due to accidental touching of the pressure plate. The limit plate is provided to limit the pushing seat. When disassembling, it is only necessary to press the pressure plate downward, and the installation plug plate is driven outward by the pushing seat to loosen the clamping of the mounting base to achieve disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the mounting base of the present invention;

[0019] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 4 This is a schematic diagram of the assembly structure of the plug plate, the first connecting rod and the connecting pull plate of the present invention;

[0021] Figure 5 is a schematic diagram of the installation structure of the second connecting rod of the present invention;

[0022] In the figure: 1. Mounting base; 2. Mounting plate; 3. Mounting screw hole; 4. Transformer body; 5. Wiring shield; 6. Mounting slot; 7. Ventilation hole; 8. Heat dissipation hole; 9. Support block; 10. Cooling fan; 12. Mounting groove; 13. Mounting plug plate; 14. First connecting rod; 15. First spring; 16. Connecting pull plate; 17. Fixing plate; 18. Second connecting rod; 19. Push seat; 20. Limiting plate; 21. Pressing plate; 22. Second spring. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0024] See also Figure 1-5 As shown, a convenient installation three-phase integrated current transformer comprises a mounting base 1, a mounting plate 2, a transformer body 4, a wiring shield 5, a mounting plug plate 13, a first connecting rod 14, a first spring 15 and a connecting pull plate 16; both sides of the mounting plate 2 are provided with mounting screw holes 3, the mounting screw holes 3 are threadedly connected with mounting bolts, the mounting plate 2 is fixedly mounted on the mounting base 1 by the mounting bolts, the transformer body 4 is fixedly arranged at the center position of the upper end of the mounting plate 2, the both sides of the transformer body 4 are rotatably connected with wiring shields 5, and wiring terminals are arranged below the wiring shields 5;

[0025] A long strip mounting groove 6 is provided at the center position of the lower end of the mounting base 1, and first connecting rods 14 are provided on the side walls at both ends of the mounting groove 6. The first connecting rod 14 slides through and is connected to the lower part of the mounting base 1, and one end of the first connecting rod 14 located in the mounting groove 6 is fixedly connected to the mounting plug plate 13, and one end of the first connecting rod 14 located outside the mounting base 1 is fixedly connected to the connecting pull plate 16. A first spring 15 is sleeved on the outer periphery of the first connecting rod 14, and one end of the first spring 15 is fixedly connected to the side wall of the mounting groove 6, and the other end of the first spring 15 is fixedly connected to the mounting plug plate 13. A downward inclined chamfer is provided on the side of the mounting plug plate 13 away from the first connecting rod 14.

[0026] The center of the bottom of the mounting groove 6 is provided with a mounting groove 12, and the center of the bottom of the mounting groove 12 is provided with a heat dissipation through hole 8. The heat dissipation through hole 8 is located directly below the transformer body 4. By arranging the mounting groove 12 and the heat dissipation through hole 8 at the center of the bottom of the mounting groove 6, the transformer body 4 can be effectively dissipated.

[0027] Two groups of support blocks 9 are symmetrically arranged in the installation groove 6, and the upper surface of the installation plug plate 13 is slidably fitted with the lower surface of the support block 9. The support block 9 plays a guiding and supporting role in the movement of the installation plug plate 13, and at the same time plays a limiting role in the installation of the installation base 1, thereby improving the stability of the installation of the installation base 1.

[0028] A cooling fan 10 is arranged in the installation groove 12 and is installed on the support block 9. The cooling fan 10 blows air toward the heat dissipation through hole 8. The cooling fan 10 is arranged to blow air to dissipate heat from the transformer body 4, thereby improving the working performance of the transformer body 4.

[0029] The side wall of the mounting groove 12 is provided with ventilation holes 7 , and the opening direction of the ventilation holes 7 is perpendicular to the first connecting rod 14 . The ventilation holes 7 are provided to facilitate the cooling fan 10 to drive air circulation, thereby improving the heat dissipation performance of the transformer body 4 .

[0030] Fixed plates 17 are horizontally fixedly installed on both sides of the mounting base 1, and at least two groups of second connecting rods 18 are slidably penetrated and connected on the fixed plates 17. The upper ends of the second connecting rods 18 are connected to pressure plates 21, and the lower ends of the second connecting rods 18 are connected to pushing seats 19. By pressing down the pressure plate 21, the pushing seat 19 is driven to move downward, and the pushing seat 19 drives the connecting pull plate 16 to move outward, and drives the two groups of mounting plug plates 13 to move outward, and the mounting base 1 is installed on the base. The pressure plate 21 is pulled upward to release the limit on the connecting pull plate 16, and the mounting plug plate 13 rebounds and is clamped on the base under the action of the first spring 15, so as to achieve fixed installation of the mounting base 1.

[0031] A second spring 22 is sleeved on the outer periphery of the second connecting rod 18, one end of the second spring 22 is connected to the pressure plate 21, and the other end of the second spring 22 is connected to the fixed plate 17. The second spring 22 is provided to automatically rebound the push seat 19 when it is reset upward, and at the same time effectively prevent the installation base 1 from being loosened due to accidental touching of the pressure plate 21.

[0032] Limiting plates 20 are provided at both ends of the mounting base 1. The limiting plates 20 are located above the pushing seat 19. The distance between the limiting plates 20 and the connecting pull plate 16 is smaller than the length of the pushing seat 19. The limiting plates 20 are provided to limit the pushing seat 19.

[0033] When the present invention is in use, the mounting plate 2 is fixedly mounted on the mounting base 1 by mounting bolts, the wiring shield 5 is provided to effectively protect the transformer wiring terminal, the mounting groove 12 and the heat dissipation through hole 8 are provided at the center of the bottom of the mounting groove 6, the transformer body 4 is effectively cooled, the heat dissipation fan 10 is provided to blow air to the transformer body 4 to dissipate heat, and the working performance of the transformer body 4 is improved, the push seat 19 is driven to move downward by pressing the pressing plate 21, and the push seat 19 drives the connecting pull plate 16 to move outward, and drives the two sets of mounting plug plates 13 to move outward, and the mounting base 1 is installed on the base The support block 9 is provided to guide and support the movement of the installation plug plate 13, and at the same time, it plays a limiting role in the installation of the installation base 1, thereby improving the stability of the installation of the installation base 1. The pressure plate 21 is pulled upward to release the limit on the connecting pull plate 16, and the installation plug plate 13 rebounds and is clamped on the base under the action of the first spring 15, thereby achieving fixed installation of the installation base 1. The second spring 22 is provided to automatically rebound the upward reset of the push seat 19, and at the same time, it effectively prevents the installation base 1 from being loosened due to accidental touching of the pressure plate 21, and the limit plate 20 is provided to limit the push seat 19.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A conveniently installed three-phase integrated current transformer, characterized in that: The invention comprises a mounting base (1), a mounting plate (2), a transformer body (4), a wiring shield (5), a mounting plug plate (13), a first connecting rod (14), a first spring (15) and a connecting pull plate (16); mounting screw holes (3) are arranged on both sides of the mounting plate (2); mounting bolts are threadedly connected to the mounting screw holes (3); the mounting plate (2) is fixedly mounted on the mounting base (1) by means of the mounting bolts; the transformer body (4) is fixedly arranged at the center position of the upper end of the mounting plate (2); wiring shields (5) are rotatably connected to both sides of the transformer body (4); wiring terminals are arranged below the wiring shields (5); A long strip-shaped mounting groove (6) is provided at the center position of the lower end of the mounting base (1), and first connecting rods (14) are provided on the side walls at both ends of the mounting groove (6). The first connecting rod (14) is slidably connected to the lower part of the mounting base (1), and one end of the first connecting rod (14) located in the mounting groove (6) is fixedly connected to the mounting plug plate (13), and one end of the first connecting rod (14) located outside the mounting base (1) is fixedly connected to the connecting pull plate (16). A first spring (15) is sleeved on the outer periphery of the first connecting rod (14), and one end of the first spring (15) is fixedly connected to the side wall of the mounting groove (6), and the other end of the first spring (15) is fixedly connected to the mounting plug plate (13). A side of the mounting plug plate (13) away from the first connecting rod (14) is provided with a downwardly inclined chamfer; Both sides of the mounting base (1) are horizontally fixedly mounted with fixing plates (17), the fixing plates (17) are slidably connected with at least two sets of second connecting rods (18), the upper ends of the second connecting rods (18) are connected to pressure plates (21), and the lower ends of the second connecting rods (18) are connected to push seats (19); A second spring (22) is sleeved on the outer circumference of the second connecting rod (18), one end of the second spring (22) is connected to the pressure plate (21), and the other end of the second spring (22) is connected to the fixed plate (17); Limiting plates (20) are provided at both ends of the mounting base (1), the limiting plates (20) are located above the pushing seat (19), and the distance between the limiting plates (20) and the connecting pull plate (16) is less than the length of the pushing seat (19).

2. The convenient-to-install three-phase integrated current transformer according to claim 1, characterized in that: A mounting groove (12) is provided at the center of the bottom of the mounting groove (6), a heat dissipation through hole (8) is provided at the center of the bottom of the mounting groove (12), and the heat dissipation through hole (8) is located directly below the transformer body (4).

3. The convenient-to-install three-phase integrated current transformer according to claim 2, characterized in that: Two groups of support blocks (9) are symmetrically arranged in the installation groove (6), and the upper surface of the installation plug plate (13) is slidably fitted with the lower surface of the support block (9).

4. The convenient-to-install three-phase current transformer according to claim 3 is characterized in that: A heat dissipation fan (10) is arranged in the installation groove (12); the heat dissipation fan (10) is installed on the support block (9); and the air blowing direction of the heat dissipation fan (10) is toward the heat dissipation through hole (8).

5. The convenient-to-install three-phase integrated current transformer according to claim 4, characterized in that: A ventilation hole (7) is provided on the side wall of the installation groove (12), and the opening direction of the ventilation hole (7) is perpendicular to the first connecting rod (14).

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