Annular transformer for photovoltaic inverter

Abstract

The utility model discloses an annular transformer for a photovoltaic inverter, which is applied to the field of photovoltaic inverters and comprises a base, a cover body is arranged at the top of the base, a transformer main body is arranged in the base, a supporting plate is arranged at the bottom of the transformer main body, and the transformer main body is placed at the top of the supporting plate during installation of the annular transformer. Then the knob is rotated, the soft layer is adjusted to the top of the cover body, the cover body covers the top of the base, then the knob is reversely operated, so that the soft layer moves towards the transformer main body, after the resistance generated after the soft layer makes contact with the transformer main body is slightly felt, the soft layer is immediately stopped, and stable installation of the transformer main body is completed. And meanwhile, when the transformer main body shakes due to the outside, the damping effect on the transformer main body can be achieved by arranging a damper and a first spring and matching with the vibration amplitude for buffering, the fixing mode is matched with the transformer main body for stable fixing, and the damping structures such as the damper and the first spring can be more conveniently exerted and used.

Description

Technical Field

[0001] The utility model belongs to the field of photovoltaic inverters, and particularly relates to a toroidal transformer for photovoltaic inverters. Background Art

[0002] With the rapid development of social economy, the inverter, also known as the power regulator, is mainly composed of switching elements such as transistors. By regularly allowing the switching elements to repeatedly switch, the DC input is converted into AC output. A toroidal transformer is required. The toroidal transformer is a large type of electronic transformer, a device that uses the principle of electromagnetic induction to convert voltage. It is mainly composed of an iron core and a winding. The output voltage is changed by changing the number of turns of the winding. Transformers are widely used in power systems for boosting, bucking and isolation.

[0003] At present, the Chinese utility model with the announcement number of CN 215118531 U discloses a toroidal transformer for photovoltaic inverter, including a base, a mounting plate fixedly mounted below the front end face and the rear end face of the base, two threaded holes symmetrically arranged on the upper end face of the mounting plate, a circular groove arranged in the middle position of the upper end face of the base, strip grooves arranged above the two sides of the inner wall of the circular groove, a connecting block arranged on the upper end face of the strip groove, a bottom plate fixedly connected to the opposite side of the outer surface of the two connecting blocks, a toroidal transformer body installed in the middle position of the upper end face of the bottom plate, terminal heads arranged on both sides of the upper end face of the toroidal transformer body, transverse grooves arranged on both sides of the lower end face of the bottom plate, and a push block slidably connected to the inner side of the transverse groove. The utility model is convenient for installing and disassembling the toroidal transformer body, has good shock absorption effect, and improves the service life of the toroidal transformer body.

[0004] The toroidal transformer has the beneficial effects of vibration reduction, but the vibration reduction has more structures, which undoubtedly increases the cost of production, and the terminal head is connected through the round hole. When the transformer is disassembled or the cover is moved, it is easy to cause contact friction between the line and the inner wall of the round hole, which will affect the connecting line over time. Utility Model Content

[0005] The utility model aims to provide a toroidal transformer for a photovoltaic inverter, which has the advantages of achieving shock absorption while reducing the increase in structural costs, and is also convenient for protecting the wiring points and reducing the contact friction between the wiring and the circular holes.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a toroidal transformer for a photovoltaic inverter, comprising a base, a cover body is provided on the top of the base, a transformer body is provided inside the base, a support plate is provided at the bottom of the transformer body, a contact plate and a soft layer are provided at the bottom of the support plate and the top of the transformer body respectively, a mounting block 2 is fixedly installed on one side of the contact plate, one end of the mounting block 2 is rotatably connected to two connecting rods, one end of the two connecting rods are rotatably connected to the mounting block 1, a slider 2 is fixedly installed on the bottom of the mounting block 1, a damper is provided on one side of the slider 2, a screw rod that penetrates the top of the cover body is rotatably connected to the top of the soft layer through a bearing, terminal heads are fixedly installed on both ends of the top of the transformer body, through holes are provided at both ends of the top of the cover body, contacts are provided on both sides of the through hole, a rod body that penetrates the inside of the cover body is fixedly installed on one side of the contact, and a side groove is provided on the other side of the contact.

[0007] The above technical solution is adopted: in the installation of the toroidal transformer, the transformer body is placed on the top of the support plate, and then the knob is turned to adjust the soft layer to the top of the cover body, the cover body is covered on the top of the base, and then the knob is operated in the reverse direction to move the soft layer toward the transformer body. After slightly feeling the resistance generated by the contact between the soft layer and the transformer body, it stops immediately to complete the stable installation of the transformer body. At the same time, when the transformer body shakes due to external factors, the vibration amplitude can be buffered by setting the damper and the spring one to achieve the shock absorption effect of the transformer body. This fixing method is combined with the transformer body to be firmly fixed, which is more convenient for the damper and the spring one to reduce the vibration. The shock structure is utilized, and when the transformer body is connected to the external connecting wire, the connecting wire is passed through the through hole and the side groove to the bottom of the cover body, and before the cover body and the base are closed, one end of the connecting wire is connected to the terminal of the transformer body, and the contact piece cooperates with the side groove to contact the outside of the connecting wire. When the cover body and the base are closed, the movement of the cover body will pull the connecting wire in the through hole, and at this time, the contact piece will cooperate with the connecting wire to shrink and stretch through the setting of the spring 2, and at the same time, the contact piece cooperates with the connecting wire to perform protective contact, so as to avoid friction between the connecting wire and the inner wall of the through hole during the movement of the cover body, further protect the connecting wire, and increase the practicality of the transformer body.

[0008] The utility model is further configured that a spring 1 is sleeved on the surface of the damper, and mounting plates are fixedly mounted on both ends of the damper.

[0009] The above technical solution is adopted: the spring 1 cooperates with the damper to perform contraction and extension.

[0010] The utility model is further configured such that the bottom of the base and the inside of the cover are both provided with a slide groove for cooperating with the sliding of the slider 2, and the mounting pieces at both ends of the damper are respectively fixedly connected with the slider 2 and the inside of the slide groove.

[0011] The above technical solution is adopted: the sliding groove cooperates with the slider 2 to slide, and the mounting plate cooperates with the damper to be installed.

[0012] The utility model is further configured that the soft layer is made of rubber material, a knob is fixedly installed on the top of the screw rod, and the screw rod and the cover body are threadedly connected to each other.

[0013] The above technical solution is adopted: the soft layer contacts the transformer body, and the knob is convenient for driving the screw to rotate. During the rotation of the screw, longitudinal advancement inside the cover body is achieved.

[0014] The utility model is further configured that a slider 1 is fixedly installed at both ends of the support plate, and a slide rail used for sliding with the slider 1 is fixedly installed on both sides of the base.

[0015] The above technical solution is adopted: the sliding connection between the slider and the slide rail is used to cooperate with the support plate and the base for movement and guidance.

[0016] The utility model is further configured such that positioning rods are fixedly installed at both ends of the bottom of the cover body, and a positioning hole for plugging in with the positioning rod is provided inside the top of the base.

[0017] The above technical solution is adopted: the cover body and the base are positioned and plugged in by cooperating with the positioning rod and the positioning hole.

[0018] The utility model is further configured that a spring 2 fixedly connected to the inside of the cover body is fixedly sleeved on the surface of the rod body, and a receiving cavity for the rod body to pass through is opened inside the cover body.

[0019] The above technical solution is adopted: the second spring cooperates with the rod body to move and retract, and the accommodating cavity cooperates with the rod body to accommodate.

[0020] The utility model is further configured that mounting pieces are fixedly mounted on the bottoms of both sides of the base, and mounting holes are provided at both ends of the mounting pieces.

[0021] The above technical solution is adopted: the base and the photovoltaic inverter are fixedly installed by cooperating with the mounting parts and the mounting holes.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. In the installation of the toroidal transformer, the utility model places the transformer body on the top of the support plate, then turns the knob to adjust the soft layer to the top of the cover body, covers the cover body on the top of the base, and then reversely operates the knob to move the soft layer toward the transformer body. When the resistance generated by the contact between the soft layer and the transformer body is slightly felt, it stops immediately to complete the stable installation of the transformer body. At the same time, when the transformer body shakes due to the outside, the damper and the spring can be set to buffer the vibration amplitude to achieve the shock absorption effect of the transformer body. This fixing method is used to fix the transformer body firmly, which is more convenient for the damping structure such as the damper and the spring to play a role.

[0024] 2. When the transformer body is connected to the external connecting wire, the connecting wire is passed through the through hole and the side groove to the bottom of the cover body. Before the cover body and the base are closed, one end of the connecting wire is connected to the terminal of the transformer body, and the contact piece cooperates with the side groove to contact the outside of the connecting wire. When the cover body and the base are closed, the movement of the cover body will pull the connecting wire in the through hole, and at this time, the contact piece will cooperate with the connecting wire to shrink and stretch through the setting of the spring 2. At the same time, the contact piece cooperates with the connecting wire to perform protective contact, avoiding friction between the connecting wire and the inner wall of the through hole during the movement of the cover body, further protecting the connecting wire, and facilitating the increase of the practicality of the transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a front view cross-sectional schematic diagram of the utility model;

[0027] Figure 3 It is a partial enlarged schematic diagram of the contact piece and the rod body of the utility model.

[0028] Figure numerals: 1, base; 2, cover; 3, transformer body; 4, support plate; 5, slider 1; 6, slide rail; 7, slider 2; 8, slide groove; 9, spring 1; 10, damper; 11, mounting plate; 12, mounting block 1; 13, mounting block 2; 14, contact plate; 15, positioning rod; 16, positioning hole; 17, terminal; 18, through hole; 19, contact plate; 20, rod body; 21, spring; 22, accommodating chamber; 23, side groove; 24, mounting piece; 25, mounting hole; 26, connecting rod; 27, soft layer; 28, screw; 29, knob. DETAILED DESCRIPTION

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0030] Embodiment 1:

[0031] refer to Figure 1 and Figure 2 A toroidal transformer for a photovoltaic inverter comprises a base 1, a cover body 2 is arranged on the top of the base 1, a transformer body 3 is arranged inside the base 1, a support plate 4 is arranged on the bottom of the transformer body 3, a contact plate 14 and a soft layer 27 are arranged on the bottom of the support plate 4 and the top of the transformer body 3, respectively, a mounting block 13 is fixedly installed on one side of the contact plate 14, one end of the mounting block 13 is rotatably connected to two connecting rods 26, one end of the two connecting rods 26 are rotatably connected to the mounting block 12, a slider 27 is fixedly installed on the bottom of the mounting block 12, a damper 10 is arranged on one side of the slider 27, a screw 28 penetrating to the top of the cover body 2 is rotatably connected to the top of the soft layer 27 through a bearing, and in the installation of the toroidal transformer, the transformer The transformer body 3 is placed on the top of the support plate 4, and then the knob 29 is turned to adjust the soft layer 27 to the top of the cover body 2, and the cover body 2 is covered on the top of the base 1, and then the knob 29 is reversed to move the soft layer 27 toward the transformer body 3. After slightly feeling the resistance generated by the contact between the soft layer 27 and the transformer body 3, it stops immediately to complete the stable installation of the transformer body 3. At the same time, when the transformer body 3 shakes due to the outside, the damper 10 and the spring 21-9 can be set to buffer the vibration amplitude to achieve the shock-absorbing effect of the transformer body 3. This fixing method is used to fix the transformer body 3 firmly, which is more convenient for the damping structure such as the damper 10 and the spring 21-9 to be used.

[0032] refer to Figure 2 The surface of the damper 10 is sleeved with springs 21-9, and mounting plates 11 are fixedly mounted on both ends of the damper 10. The springs 21-9 cooperate with the damper 10 to be used for contraction and extension.

[0033] refer to Figure 2 The bottom of the base 1 and the inside of the cover 2 are both provided with a slide groove 8 for cooperating with the sliding block 7. The mounting pieces 11 at both ends of the damper 10 are respectively fixedly connected with the sliding block 7 and the inside of the slide groove 8. The sliding block 7 slides through the slide groove 8, and the mounting piece 11 is installed in cooperation with the damper 10.

[0034] refer to Figure 1 The soft layer 27 is made of rubber, and a knob 29 is fixedly installed on the top of the screw 28. The screw 28 and the cover body 2 are threadedly connected to each other, and are in contact with the transformer body 3 through the soft layer 27. The knob 29 is convenient for driving the screw 28 to rotate. During the rotation of the screw 28, longitudinal advancement inside the cover body 2 will be achieved.

[0035] refer to Figure 2Slide blocks 5 are fixedly installed at both ends of the support plate 4, and slide rails 6 for cooperating with the slide blocks 5 are fixedly installed on both sides of the base 1. Through the sliding connection between the slide blocks 5 and the slide rails 6, the support plate 4 and the base 1 are moved and guided.

[0036] refer to Figure 2 Positioning rods 15 are fixedly installed at both ends of the bottom of the cover body 2, and a positioning hole 16 for plugging in with the positioning rods 15 is opened inside the top of the base 1. The positioning rods 15 and the positioning holes 16 cooperate with each other to perform positioning plugging between the cover body 2 and the base 1.

[0037] Brief description of the use process: When installing the toroidal transformer, place the transformer body 3 on the top of the support plate 4, then turn the knob 29, which will drive the screw 28 to rotate. During the rotation of the screw 28, the soft layer 27 will be longitudinally advanced inside the cover 2. At this time, adjust the soft layer 27 to the top of the cover 2, cover the cover 2 on the top of the base 1, and then operate the knob 29 in the reverse direction, so that the knob 29 drives the soft layer 27 to move toward the transformer body 3. When you feel the resistance generated by the contact between the soft layer 27 and the transformer body 3, immediately Stop, the sliding connection between the slider 5 and the slide rail 6 cooperates with the support plate 4 and the base 1 for movement and guidance, so as to complete the stable installation of the transformer body 3 inside the base 1. At the same time, when the transformer body 3 shakes due to the outside, the damper 10 and the spring 21-9 can be used to buffer the vibration amplitude. At the same time, the slider 5 moves inside the slide groove 8 to achieve the shock-absorbing effect on the transformer body 3. At the same time, this fixing method cooperates with the transformer body 3 to be firmly fixed, which is more convenient for the use of shock-absorbing structures such as the damper 10 and the spring 21-9.

[0038] Embodiment 2:

[0039] refer to Figure 1 , Figure 2 and Figure 3A toroidal transformer for a photovoltaic inverter includes a base 1, a wiring head 17 is fixedly installed at both ends of the top of a transformer body 3, a through hole 18 is opened at both ends of the top of a cover body 2, and a contact piece 19 is arranged on both sides of the through hole 18, a rod 20 penetrating into the inside of the cover body 2 is fixedly installed on one side of the contact piece 19, and a side groove 23 is opened on the other side of the contact piece 19. When the transformer body 3 is connected to an external connecting wire, the connecting wire is passed through the through hole 18 and the side groove 23 to the bottom of the cover body 2. Before the cover body 2 is covered with the base 1, One end of the connecting wire is connected to the terminal 17 of the transformer body 3, and the contact piece 19 cooperates with the side groove 23 to contact the outer side of the connecting wire. When the cover body 2 and the base 1 are covered, the movement of the cover body 2 will pull the connecting wire in the through hole 18, and at this time, the contact piece 19 will cooperate with the connecting wire to shrink and stretch through the setting of the spring 21. At the same time, the contact piece 19 cooperates with the connecting wire to perform protective contact to avoid friction between the connecting wire and the inner wall of the through hole 18 during the movement of the cover body 2, thereby further protecting the connecting wire and increasing the practicality of the transformer body 3.

[0040] refer to Figure 2 The surface of the rod body 20 is fixedly sleeved with a spring 212 fixedly connected to the inside of the cover body 2. The inside of the cover body 2 is provided with a receiving cavity 22 for the rod body 20 to pass through. The spring 212 cooperates with the rod body 20 to move and retract, and the receiving cavity 22 cooperates with the rod body 20 to accommodate it.

[0041] refer to Figure 1 The bottom of both sides of the base 1 are fixedly installed with mounting parts 24, and both ends of the mounting parts 24 are provided with mounting holes 25. The mounting parts 24 and the mounting holes 25 cooperate with each other to fix the base 1 and the photovoltaic inverter.

[0042] Brief description of the use process: When the transformer body 3 is connected to the external connecting wire, the connecting wire is passed through the through hole 18 and the side groove 23 to the bottom of the cover body 2. Before the cover body 2 and the base 1 are covered, one end of the connecting wire is connected to the terminal 17 of the transformer body 3, and the contact piece 19 cooperates with the side groove 23 to contact the outside of the connecting wire. When the cover body 2 and the base 1 are covered, the movement of the cover body 2 will pull the connecting wire in the through hole 18, and at this time, the contact piece 19 will cooperate with the connecting wire to shrink and stretch through the setting of the spring 21, and the accommodating cavity 22 cooperates with the rod body 20 to accommodate it. At the same time, the contact piece 19 is made of soft material and cooperates with the connecting wire for protective contact to avoid friction between the connecting wire and the inner wall of the through hole 18 during the movement of the cover body 2, further protecting the connecting wire, and facilitating the increase of the practicality of the use of the transformer body 3.

[0043] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A toroidal transformer for a photovoltaic inverter, comprising a base (1), characterized in that: A cover body (2) is provided on the top of the base (1), a transformer body (3) is provided inside the base (1), a support plate (4) is provided on the bottom of the transformer body (3), a contact plate (14) and a soft layer (27) are provided on the bottom of the support plate (4) and the top of the transformer body (3), respectively, a mounting block 2 (13) is fixedly installed on one side of the contact plate (14), one end of the mounting block 2 (13) is rotatably connected to two connecting rods (26), one end of the two connecting rods (26) are rotatably connected to the mounting block 1 (12), and a sliding member (27) is fixedly installed on the bottom of the mounting block 1 (12). Block 2 (7), a damper (10) is provided on one side of the slider 2 (7), the top of the soft layer (27) is rotatably connected to a screw (28) penetrating the top of the cover body (2) through a bearing, the top of the transformer body (3) is fixedly mounted with terminal heads (17) at both ends, the top of the cover body (2) is provided with through holes (18) at both ends, the inside of the through holes (18) is provided with contact pieces (19) on both sides, one side of the contact piece (19) is fixedly mounted with a rod (20) penetrating the inside of the cover body (2), and the other side of the contact piece (19) is provided with a side groove (23).

2. A toroidal transformer for a photovoltaic inverter according to claim 1, characterized in that: A spring (21)-(9) is sleeved on the surface of the damper (10), and mounting plates (11) are fixedly mounted on both ends of the damper (10).

3. A toroidal transformer for a photovoltaic inverter according to claim 2, characterized in that: The bottom of the base (1) and the inside of the cover (2) are both provided with a slide groove (8) for cooperating with the sliding block (7) for sliding, and the mounting plates (11) located at both ends of the damper (10) are respectively fixedly connected to the inside of the sliding block (7) and the slide groove (8).

4. A toroidal transformer for a photovoltaic inverter according to claim 3, characterized in that: The soft layer (27) is made of rubber, a knob (29) is fixedly mounted on the top of the screw rod (28), and the screw rod (28) and the cover body (2) are threadedly connected to each other.

5. The toroidal transformer for photovoltaic inverter according to claim 1, characterized in that: Slide blocks (5) are fixedly mounted on both ends of the support plate (4), and slide rails (6) for cooperating with the slide blocks (5) for sliding are fixedly mounted on both sides of the interior of the base (1).

6. The toroidal transformer for photovoltaic inverter according to claim 1, characterized in that: Positioning rods (15) are fixedly mounted at both ends of the bottom of the cover body (2), and a positioning hole (16) for plugging in with the positioning rods (15) is provided inside the top of the base (1).

7. The toroidal transformer for photovoltaic inverter according to claim 1, characterized in that: Two springs (21) fixedly connected to the inside of the cover body (2) are fixedly sleeved on the surface of the rod body (20), and a receiving cavity (22) for the rod body (20) to pass through is provided inside the cover body (2).

8. The toroidal transformer for photovoltaic inverter according to claim 1, characterized in that: The bottoms of both sides of the base (1) are fixedly mounted with mounting members (24), and both ends of the mounting members (24) are provided with mounting holes (25).

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