A three-phase, single-phase universal integrated power transformer

Abstract

The utility model discloses a three -phase, single -phase general integrated power transformer, including transformer casing, the upper surface of transformer casing is equipped with ceramic binding post and binding post respectively still includes switching mechanism, switching mechanism: it includes switching casing, electric phase switch board, adjusting casing, spacing column and switch board, switching casing sets up in the inside upper end of transformer casing, and the inside transverse sliding connection of switching casing has electric phase switch board, and ceramic binding post connection electrode and binding post connection electrode all are installed with the cooperation of switching electrode on the surface of electric phase switch board, this three -phase, single -phase general integrated power transformer, through the cooperation of electric phase switch board and switching part, switches the circuit of power transformer quickly, makes power transformer can be used three -phase circuit and single -phase circuit, and the circuit switching of power transformer is more convenient and faster, reduces the time required for power transformer installation wiring.

Description

Technical Field

[0001] This utility model relates to the field of power transformer technology, specifically a three-phase and single-phase universal integrated power transformer. Background Technology

[0002] A power transformer is a static electrical device that uses the principle of electromagnetic induction to change alternating current voltage. It is used for power transmission, distribution, and voltage conversion. It mainly consists of an iron core, windings, an oil tank, and insulating materials. The iron core is the magnetic circuit part of the transformer and is usually made of stacked silicon steel sheets to reduce hysteresis and eddy current losses. The windings are the electrical circuit part, divided into primary and secondary windings. The primary winding is connected to the power supply, and the secondary winding outputs voltage. The transformer works through the principle of electromagnetic induction. When alternating current is applied to the primary winding, a magnetic flux is generated in the iron core, inducing a voltage in the secondary winding. In existing technology, power transformers are mainly classified into single-phase transformers and three-phase transformers according to the number of phases. In practical applications, to enable the transformer to be used in both three-phase and single-phase circuits, a parallel winding method is often used, connecting the three windings on the high and low voltage sides into a single winding. This results in additional installation time during wiring and installation, and makes switching between power transformers inconvenient. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a three-phase and single-phase universal integrated power transformer. Through the cooperation of the phase switching plate and the switching components, the circuit of the power transformer can be quickly switched, making the circuit switching of the power transformer more convenient and faster, reducing the time required for power transformer installation and wiring, and effectively solving the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a three-phase and single-phase universal integrated power transformer, including a transformer housing, wherein ceramic terminals and wiring terminals are respectively provided on the upper surface of the transformer housing, and a switching mechanism is also included;

[0005] The switching mechanism includes a switching housing, a phase switching plate, an adjusting housing, limiting posts, and a switching plate. The switching housing is located inside the upper part of the transformer housing. The phase switching plate is slidably connected to the inside of the switching housing. The ceramic terminal electrode and the terminal electrode are installed in conjunction with the switching electrode on the surface of the phase switching plate. The adjustable housing with elastic limiting is vertically slidably connected to the sliding hole on the upper surface of the transformer housing. Limiting posts are provided at the four corners of the lower surface of the adjustable housing. The limiting posts are inserted into the limiting holes on the surfaces of the switching housing and the phase switching plate. The upper end of the adjusting housing is rotatably connected to the switching plate, which moves horizontally synchronously with the phase switching plate. Through the cooperation of the phase switching plate and the switching components, the circuit of the power transformer can be quickly switched, enabling the power transformer to use both three-phase and single-phase circuits, thus improving the application range of the power transformer. The circuit switching of the power transformer is more convenient and faster, reducing the time required for power transformer installation and wiring.

[0006] Furthermore, the switching mechanism also includes an adjusting plate, a sliding column, and a first rotating plate. The adjusting plate is disposed on the upper surface of the phase switching plate, and the first rotating plate with elastic limit is disposed on the outer arc surface of the rotating column of the switching plate. The sliding column is slidably connected between the sliding grooves on the front and rear inner walls of the first rotating plate. The sliding column is rotatably connected to the adjusting plate, so that the switching plate and the phase switching plate move left and right synchronously.

[0007] Furthermore, the switching mechanism also includes a vertical groove, which is disposed at the upper end of the adjusting plate. The sliding column is vertically slidably connected to the vertical groove, providing space for the up and down movement of the adjusting housing.

[0008] Furthermore, a connecting post is provided between the upper surface of the switching housing and the top wall of the transformer housing. The connecting post passes through the guide hole on the surface of the adjusting housing. A spring is provided between the adjusting housing and the top wall of the transformer housing. The spring is movably sleeved on the outer arc surface of the connecting post to provide elastic limit for the adjusting housing.

[0009] Furthermore, it also includes a telescopic rod, with a second rotating plate at both the telescopic end and the fixed end of the telescopic rod. The upper second rotating plate is rotatably connected to the inner wall of the adjusting housing via a rotating shaft one, and the lower second rotating plate is rotatably connected to the lower end of the first rotating plate via a rotating shaft two. A second spring is provided between the two second rotating plates located on the same telescopic rod, and the second spring is movably sleeved on the outer arc surface of the telescopic rod to provide elastic limit for the second rotating plate.

[0010] Furthermore, a rubber sleeve is provided between the upper end of the outer side of the adjusting housing and the upper surface of the transformer housing to seal the adjusting housing and the transformer housing.

[0011] Furthermore, an electromagnet is provided in the middle of the upper surface of the phase switching plate. The electromagnet is installed in conjunction with the iron plate at the lower end of the adjusting housing to firmly limit the position of the phase switching plate during the operation of the power transformer.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This three-phase and single-phase universal integrated power transformer has the following advantages:

[0013] By cooperating with the phase switching board and switching components, the circuit of the power transformer can be quickly switched, enabling the power transformer to be used with both three-phase and single-phase circuits, thus expanding the application range of the power transformer. The circuit switching of the power transformer is more convenient and faster, reducing the time required for power transformer installation and wiring. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view sectional diagram of the switching mechanism of this utility model;

[0016] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0017] Figure 4 This is a front view of the switching mechanism of this utility model;

[0018] Figure 5 This is a structural schematic diagram of the switching mechanism of this utility model in frontal cross-section;

[0019] Figure 6 This is a top view of the phase switching board of this utility model.

[0020] In the diagram: 1 Transformer housing, 2 Ceramic terminal block, 3 Terminal block, 4 Switching mechanism, 41 Switching housing, 42 Phase switching plate, 43 Adjusting housing, 44 Limiting pin, 45 Adjusting plate, 46 Vertical slot, 47 Sliding column, 48 First rotating plate, 49 Switching plate, 5 Connecting column, 6 Spring 1, 7 Telescopic rod, 8 Second rotating plate, 9 Spring 2, 10 Rubber sleeve, 11 Electromagnet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-6This embodiment provides a technical solution: a three-phase and single-phase universal integrated power transformer, including a transformer housing 1. The transformer housing 1 is equipped with a core, three primary windings and three secondary windings, which are commonly used in the prior art for power transformers. The connection methods of the core, the three primary windings and the three secondary windings are all commonly used methods for connecting power transformer accessories in the prior art. When current is passed through the primary winding, a corresponding current is generated in the secondary winding using the principle of electromagnetic induction. The upper surface of the transformer housing 1 is respectively provided with ceramic terminals 2 and terminals 3. The external high-voltage circuit is connected to the power transformer through the ceramic terminals 2, and the external low-voltage circuit is connected to the power transformer through the terminals 3. The connection methods of the terminals 3 with the power transformer composed of the transformer housing 1 and internal accessories are all commonly used power connection methods in the prior art. It also includes a switching mechanism 4.

[0023] Switching mechanism 4 includes a switching housing 41, a phase switching plate 42, an adjusting housing 43, limiting posts 44, and a switching plate 49. The switching housing 41 is located at the upper interior of the transformer housing 1. The phase switching plate 42 is slidably connected laterally inside the switching housing 41. The ceramic terminal 2 and terminal 3 terminals are installed in conjunction with the switching electrodes on the surface of the phase switching plate 42. The phase switching plate 42 has direct-connection switching electrodes and parallel-connection switching electrodes in contact. The elastically limited adjusting housing 43 is vertically slidably connected to a sliding hole on the upper surface of the transformer housing 1. Limiting posts 44 are provided at the four corners of the lower surface of the adjusting housing 43. The limiting posts 44 are inserted into the limiting holes on the surfaces of the switching housing 41 and the phase switching plate 42. The upper end of the housing 43 is rotatably connected to a switching plate 49 that moves laterally synchronously with the phase switching plate 42. When the power transformer is connected to a three-phase circuit, the ceramic terminal 2 and terminal 3 contacts the direct-connection switching electrode of the phase switching plate 42. Under the conduction of the direct-connection switching electrode, the ceramic terminal 2 contacts the input electrode of the primary winding, and the terminal 3 contacts the output electrode of the secondary winding. When the power transformer is connected to a three-phase circuit, the ceramic terminal 2 and terminal 3 contacts the parallel switching electrode of the phase switching plate 42. Under the conduction of the parallel switching electrode, the primary windings and secondary windings of the power transformer are connected in parallel, and the external single-phase circuit... Any ceramic terminal 2 and any terminal 3 can be connected to the power transformer. When switching between single-phase and three-phase, pull the switching plate 49 upward to overcome the elastic force of spring 6, and pull the adjusting housing 43 and the limiting plug 44 upward. When the limiting plug 44 leaves the limiting hole on the surface of the phase switching plate 42, the phase switching plate 42 can move. The rotation of the switching plate 49 is unrestricted and no additional force needs to be applied to the switching plate 49. Under the weight of the adjusting housing 43 and its internal transmission parts, the adjusting housing 43 and the switching plate 49 rotate relative to each other, and the switching plate 49 rotates relative to the operator's hand. Because the adjusting housing 43 can only slide vertically, the phase switching plate 42 moves accordingly under the support of the adjusting housing 43. The switching plate 49 is moved horizontally. At this point, the pull on the switching plate 49 can be released. Due to the misalignment between the limiting pin 44 and the limiting socket of the phase switching plate 42, the adjusting housing 43 cannot fully reset, pushing the switching plate 49 to rotate and moving the phase switching plate 42. When the limiting pin 44 and the limiting socket of the phase switching plate 42 vertically coincide, the adjusting housing 43 is lowered and reset by the elastic limiting component, ensuring the accuracy of the position of the phase switching plate 42. The switching mechanism 4 also includes an adjusting plate 45, a sliding column 47, and a first rotating plate 48. The adjusting plate 45 is disposed on the upper surface of the phase switching plate 42. The elastically limited first rotating plate 48 is disposed on the outer arc surface of the rotating column of the switching plate 49. The sliding column 47 is slidably connected between the sliding grooves on the front and rear inner walls of the first rotating plate 48.The sliding column 47 is rotatably connected to the adjusting plate 45. When the switching plate 49 rotates, the relative sliding of the sliding column 47 and the sliding groove of the first rotating plate 48 pushes the adjusting plate 45 and the phase switching plate 42 to move. The switching mechanism 4 also includes a vertical groove 46, which is set at the upper end of the adjusting plate 45. The sliding column 47 is vertically slidably connected to the vertical groove 46. The vertical sliding of the sliding column 47 and the vertical groove 46 provides space for the vertical movement of the adjusting housing 43. A connecting column 5 is provided between the upper surface of the switching housing 41 and the top wall of the transformer housing 1. The connecting column 5 passes through the guide hole on the surface of the adjusting housing 43. A spring 6 is provided between the adjusting housing 43 and the top wall of the transformer housing 1. The spring 6 is movably sleeved on the outer arc surface of the connecting column 5. The elastic force of the spring 6 provides elastic limit for the adjusting housing 43. The mechanism also includes a telescopic rod 7. A second rotating plate 8 is provided at both the telescopic end and the fixed end of the telescopic rod 7. The upper second rotating plate 8 is connected to the inner wall of the adjusting housing 43 through a rotating shaft. The lower second rotating plate 8 is rotatably connected to the lower end of the first rotating plate 48 via a rotating shaft 2. A spring 2 9 is provided between the two second rotating plates 8 located on the same telescopic rod 7. The spring 2 9 is movably sleeved on the outer arc surface of the telescopic rod 7. Under the elastic force of the spring 2 9, the telescopic rod 7 applies force to the lower end of the second rotating plate 8, limiting the rotation angle of the second rotating plate 8. A rubber sleeve 10 is provided between the upper end of the outer surface of the adjusting housing 43 and the upper surface of the transformer housing 1. Through the deformation of the rubber sleeve 10, a seal is formed between the adjusting housing 43 and the transformer housing 1 during the up-and-down movement of the adjusting housing 43. An electromagnet 11 is provided in the middle of the upper surface of the phase switching plate 42. The electromagnet 11 is installed in conjunction with the iron plate at the lower end of the adjusting housing 43. The input end of the electromagnet 11 is electrically connected to the output end of the power transformer controller. During the operation of the power transformer, the electromagnet 11 is energized to generate magnetic attraction, firmly limiting the up-and-down position of the adjusting housing 43.

[0024] The working principle of the universal three-phase and single-phase integrated power transformer provided by this utility model is as follows: During use, under the elastic force of spring 6, the lower surface of the adjusting housing 43 is brought into contact with the upper surface of the electromagnet 11, and the adjusting housing 43 is in its upper limit position. The limiting pin 44 is inserted into the limiting holes on the surfaces of the switching housing 41 and the phase switching plate 42, preventing relative sliding between the switching housing 41 and the phase switching plate 42. With the connection of the transmission components, the rotation of the switching plate 49 is restricted. Depending on whether the power transformer is connected to a single-phase circuit or a three-phase circuit, the operator applies an upward pulling force to the switching plate 49 to overcome the spring... The elastic force of the 6 pulls the adjusting housing 43 and the limiting pin 44 upward, and the sliding pin 47 slides in the vertical groove 46. When the limiting pin 44 leaves the limiting hole on the surface of the phase switching plate 42, the phase switching plate 42 can move. The rotation of the switching plate 49 is unrestricted and no additional force needs to be applied to the switching plate 49. Under the weight of the adjusting housing 43 and its internal transmission parts, the adjusting housing 43 and the switching plate 49 rotate relative to each other, and the switching plate 49 rotates relative to the palm of the operator. Because the adjusting housing 43 can only slide vertically, under the support of the adjusting housing 43, the sliding pin 47 moves in the groove of the first rotating plate 48. When sliding, the adjusting plate 45 and the phase switching plate 42 are moved. At this time, the lifting of the switching plate 49 can be released. Due to the misalignment between the limiting plug 44 and the limiting socket of the phase switching plate 42, the adjusting housing 43 cannot be completely reset. At this time, the switching plate 49 can be rotated to move the phase switching plate 42. When the limiting plug 44 and the limiting socket of the phase switching plate 42 are vertically aligned, the adjusting housing 43 is moved down and reset under the elastic force of spring 6, ensuring the accuracy of the position of the phase switching plate 42. When the power transformer is connected to the three-phase circuit, the ceramic terminal 2 and the terminal 3 are connected. The ceramic terminal 2 contacts the direct switching electrode of the phase switching plate 42, and under the conduction of the direct switching electrode, the ceramic terminal 2 contacts the input electrode of the primary winding, and the terminal 3 contacts the output electrode of the secondary winding. When the power transformer is connected to a three-phase circuit, the ceramic terminal 2 and the terminal 3 contacts the parallel switching electrode of the phase switching plate 42, and under the conduction of the parallel switching electrode, the primary windings and the secondary windings of the power transformer are connected in parallel. An external single-phase circuit can choose any ceramic terminal 2 and any terminal 3 to connect to the power transformer.

[0025] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A three-phase and single-phase universal integrated power transformer, comprising a transformer housing (1), wherein ceramic terminals (2) and wiring terminals (3) are respectively provided on the upper surface of the transformer housing (1), characterized in that: It also includes a switching mechanism (4); The switching mechanism (4) includes a switching housing (41), an electrical phase switching plate (42), an adjusting housing (43), a limiting plug (44), and a switching plate (49). The switching housing (41) is located at the upper inside of the transformer housing (1). The electrical phase switching plate (42) is slidably connected to the inside of the switching housing (41). The ceramic terminal (2) electrode and the terminal (3) electrode are installed in conjunction with the switching electrode on the surface of the electrical phase switching plate (42). The adjusting housing (43) with elastic limit is slidably connected to the sliding hole on the upper surface of the transformer housing (1). The four corners of the lower surface of the adjusting housing (43) are provided with limiting plugs (44). The limiting plugs (44) are inserted into the limiting holes on the surfaces of the switching housing (41) and the electrical phase switching plate (42). The upper end of the adjusting housing (43) is rotatably connected to the switching plate (49) which moves laterally synchronously with the electrical phase switching plate (42).

2. The three-phase and single-phase universal integrated power transformer according to claim 1, characterized in that: The switching mechanism (4) further includes an adjusting plate (45), a sliding column (47) and a first rotating plate (48). The adjusting plate (45) is disposed on the upper surface of the phase switching plate (42). The first rotating plate (48) with elastic limit is disposed on the outer arc surface of the rotating column of the switching plate (49). The sliding column (47) is slidably connected between the sliding grooves on the front and rear inner walls of the first rotating plate (48). The sliding column (47) is rotatably connected to the adjusting plate (45).

3. A three-phase and single-phase universal integrated power transformer according to claim 2, characterized in that: The switching mechanism (4) also includes a vertical groove (46), which is located at the upper end of the adjusting plate (45), and the sliding column (47) is vertically slidably connected to the vertical groove (46).

4. A three-phase and single-phase universal integrated power transformer according to claim 1, characterized in that: A connecting column (5) is provided between the upper surface of the switching housing (41) and the top wall of the transformer housing (1). The connecting column (5) passes through the guide hole on the surface of the adjusting housing (43). A spring (6) is provided between the adjusting housing (43) and the top wall of the transformer housing (1). The spring (6) is movably sleeved on the outer arc surface of the connecting column (5).

5. A three-phase and single-phase universal integrated power transformer according to claim 2, characterized in that: It also includes a telescopic rod (7), and the telescopic end and the fixed end of the telescopic rod (7) are provided with a second rotating plate (8). The upper second rotating plate (8) is rotatably connected to the inner wall of the adjusting housing (43) through a rotating shaft one, and the lower second rotating plate (8) is rotatably connected to the lower end of the first rotating plate (48) through a rotating shaft two. A second spring (9) is provided between the two second rotating plates (8) located on the same telescopic rod (7), and the second spring (9) is movably sleeved on the outer arc surface of the telescopic rod (7).

6. A three-phase and single-phase universal integrated power transformer according to claim 1, characterized in that: A rubber sleeve (10) is provided between the upper end of the outer side of the regulating housing (43) and the upper surface of the transformer housing (1).

7. A three-phase and single-phase universal integrated power transformer according to claim 1, characterized in that: An electromagnet (11) is provided in the middle of the upper surface of the phase switching plate (42), and the electromagnet (11) is installed in conjunction with the iron plate at the lower end of the adjusting housing (43).

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