Power adjustment protection device for photovoltaic inverter

Abstract

The utility model belongs to the technical field of photovoltaic inverters, and particularly relates to a photovoltaic inverter electric power adjusting protection device, which comprises an inverter main body, a plurality of connecting wires are arranged on the lower side of the inverter main body in a plugging manner, a protection mechanism is arranged on the lower side of the inverter main body, and the protection mechanism is connected with the inverter main body. And the protection mechanism comprises a main body block, a through hole, an end block, an inserting rod, a movable block, a spring I, a clamping block, a wire clamping mechanism I, a connecting rod, a clamping rod, a connecting plate and a wire clamping mechanism II. When the connecting wire is pulled, the connecting wire and the plugging end of the inverter main body are not directly pulled, and the connecting wire can be directly pulled out downwards from the inverter main body, so that pulling protection is formed for connection between the connecting wire and the inverter main body, deformation and damage of an interface of the inverter main body caused by direct pulling are avoided, and connection is directly disconnected; and the problem that the inverter main body cannot be normally used subsequently due to short circuit and even burning of the main board of the inverter main body is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic inverters, and in particular relates to a photovoltaic inverter power adjustment and protection device. Background Art

[0002] Photovoltaic inverters, also known as photovoltaic current regulators, convert the direct current of solar energy from photovoltaic panels into alternating current and incorporate it into the power grid. Some current photovoltaic power stations will use small string-type grid-connected inverters, which can be directly installed on the support frame of the photovoltaic panels. A small string-type grid-connected inverter can connect the lines of multiple photovoltaic panels, but photovoltaic power stations occupy a large area, and some areas have seasonal strong winds. After being blown by strong winds, the photovoltaic panels of photovoltaic power stations will be lifted up or the support frame will be directly overturned even if counterweights are installed. As a result, there will be a problem of severe pulling between the connectors of the photovoltaic panels and the grid lines and the inverter. When repeatedly and disorderly pulled, it is sometimes impossible to directly tear off the connectors, and the pulling is likely to cause deformation and damage to the interface of the inverter. Because the connection is not interrupted in time, the inverter that is still in current adjustment work is prone to short circuit or even burning of the inverter mainboard, resulting in the inverter being unable to be used normally later. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a photovoltaic inverter power adjustment protection device to solve the problem that photovoltaic power stations occupy a large area and some areas have seasonal strong winds. After the photovoltaic panels of the photovoltaic power station are blown by the strong wind, even if the counterweight blocks are installed, the photovoltaic panels may be lifted up or the support frame may be directly overturned. As a result, there will be a problem of severe pulling between the connectors of the photovoltaic panels and the power grid lines and the inverter. When repeatedly and disorderly pulled, it is sometimes impossible to directly tear off the connectors, and the pulling may easily cause deformation and damage to the interface of the inverter. Because the connection is not interrupted in time, the inverter that is still in current adjustment work is prone to short circuit or even burning of the inverter mainboard, resulting in the inverter being unable to be used normally afterwards.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a photovoltaic inverter power adjustment protection device, including an inverter body, a wiring is plugged in the lower side of the inverter body, the number of the wiring is multiple, a protection mechanism is arranged on the lower side of the inverter body, the protection mechanism includes a main body block, a through hole, an end block, a plug-in rod, a movable block, a spring, a clamping block, a wire clamping mechanism 1, a connecting rod, a clamping rod, a connecting plate and a wire clamping mechanism 2, the clamping blocks are symmetrically arranged on the lower sides of the two side surfaces of the inverter body, a wire clamping mechanism 1 is arranged on the lower side of the inverter body, the wire clamping mechanism 1 includes a clamping rod 1 and a clamping rod 2, both ends of the side surface of the clamping rod 1 are threadedly provided with a bolt 1, the bolt 1 passes through the clamping rod 2 and is threadedly connected with a nut 1, the clamping rod 1 and the clamping rod 2 are The two ends of rod 2 are provided with connecting rods, and the sides of the clamping blocks away from each other are provided with clamping rods, the connecting rods are slidably clamped with the clamping rods, and the connecting rods are provided with movable grooves on the sides of the connecting rods close to the wire clamping mechanism 1, and spring telescopic rods are provided in the movable grooves, and the lower ends of the spring telescopic rods are respectively fixedly connected with clamping rod 1 and clamping rod 2, and a connecting plate is provided on the side of the clamping rod 2 away from the clamping rod 1, and a wire clamping mechanism 2 is provided on the upper side of the connecting plate, and the wire clamping mechanism 2 includes clamping rod 3 and clamping rod 4, and bolts 2 are threadedly provided on both ends of the side of the clamping rod 3, and the bolts 2 are threadedly connected to the clamping rod 4 and are provided with nuts 2, and the wiring passes between the clamping rod 1 and the clamping rod 2, and the wiring passes through the clamping rod 3 and the clamping rod 4 from the upper side of the wire clamping mechanism 2 to the lower side.

[0005] The beneficial effect of the utility model is that when the wiring is pulled, the plug-in end of the wiring and the inverter body will not be directly pulled, and the wiring can be directly pulled downward from the inverter body, thereby forming a pulling protection for the connection between the wiring and the inverter body, avoiding deformation and damage of the interface of the inverter body caused by direct pulling, and directly disconnecting the connection, avoiding short circuit or even burning of the inverter body mainboard, resulting in the inverter body being unable to be used normally later.

[0006] In order to make the protection mechanism detach from the lower side of the inverter body due to the wiring pull;

[0007] As a further improvement of the above technical solution: the main body block is arranged on the lower side of the side of the inverter body, and a through hole is opened on the side of the main body block, and end blocks are fixedly arranged at both ends of the inner side of the through hole, and plug-in rods are inserted into the sides of the end blocks away from each other, and the plug-in rods pass through the end blocks to the inner side of the through hole where a movable block is arranged, and a spring is arranged between the movable block and the end block, and the ends of the plug-in rods away from each other are fixedly connected to the clamping blocks, and the clamping blocks are clamped on the two side surfaces of the inverter body.

[0008] The beneficial effect of the present improvement is as follows: if the clamping block is fixedly connected to both sides of the inverter body, after the wiring is pulled out, the wiring will continue to be pulled on the protection mechanism because it is still clamped. Since the protection mechanism is fixed by the inverter body, the housing of the inverter body is easily deformed and the wiring is directly broken under subsequent pulling. The movable block is pushed by the spring 1, and the movable block pulls the clamping block to be clamped on both sides of the inverter body. When being pulled, it is only necessary to ensure that the force generated by the spring 1 is much stronger than the elastic force of the spring telescopic rod itself, but the clamping force of the clamping block is less than the breaking force of the wiring pulling. That is, when the wiring is pulled out, the subsequent pulling can directly overcome the static friction between the inverter body and the clamping block, so that the protection mechanism is directly pulled by the wiring and detached from the lower side of the inverter body, thereby avoiding subsequent influence on the inverter body and reducing the influence of the pulling on the wiring itself. In addition, the protection mechanism can be detachable, which is convenient for regular installation and disassembly.

[0009] In order to increase the buffer protection of the docking line;

[0010] As a further improvement of the above technical solution: a rubber plate is provided on each side of the clamping rod 1 and the clamping rod 2 and the clamping rod 3 and the clamping rod 4 which are close to each other.

[0011] The beneficial effect of this improvement is that the rubber plate is provided to increase the buffering protection of the butt joint line.

[0012] In order to enable the clamping plate 1 and the clamping plate 3 to automatically clamp the wiring;

[0013] As a further improvement of the above technical solution: a second spring is arranged between the first bolt and the first clamping plate, and a third spring is arranged between the second bolt and the third clamping plate.

[0014] The beneficial effect of this improvement is that under the action of spring two and spring three, clamping plate one and clamping plate three can automatically clamp the wiring, and there is no need to adjust bolt one and bolt two.

[0015] To increase static friction and clamping protection;

[0016] As a further improvement of the above technical solution: a rough rubber buffer layer is provided on the contact surface between the clamp block and the inverter body.

[0017] The beneficial effects of this improvement are: increasing static friction and clamping protection.

[0018] In order to increase the pull error tolerance;

[0019] As a further improvement of the above technical solution: telescopic rods are arranged in parallel on the upper side of the connecting plate, end plates are arranged on the upper ends of the telescopic rods, the end plates are fixedly connected to the clamping plate three, and springs four are sleeved on the outer sides of the telescopic rods.

[0020] The beneficial effect of this improvement is that when the wire clamping mechanism 2 is pulled, the end plate will push down the telescopic rod, compressing the spring 4, which can provide a buffer between the wire clamping mechanism 2 and the wire clamping mechanism 1, avoiding that the wire clamping mechanism 2 is directly pulled down to pull the wire away from the inverter body after being pulled lightly, thereby increasing a certain pulling fault tolerance space.

[0021] In order to adjust the installation position of the inverter body up and down within a certain range;

[0022] As a further improvement of the above technical solution: a mounting mechanism is provided on the side of the inverter body away from the main block, mounting holes are provided at the four corners of the side of the mounting mechanism, a clamping block is provided in the middle of the side of the mounting mechanism close to the inverter body, a limiting block is provided on the side of the clamping block close to the inverter body for sliding engagement, a connecting hole is provided on the side of the limiting block, the limiting block is screwed to the inverter body through the connecting hole, fixing blocks are symmetrically provided on both sides of the inverter body, a fastening bolt is threadedly provided on the side of the fixing block away from the mounting mechanism, and the fastening bolt thread passes through the fixing block and contacts with the mounting mechanism.

[0023] The beneficial effects of this improvement are: a mounting mechanism is set up, the mounting plate is mounted on the support frame through the mounting hole, and is slidably connected to the limiting block and the clamping block, so that the installation position of the inverter body can be adjusted up and down within a certain range according to installation needs, and the mounting mechanism is tightened and compressed by the fixing block to fix the inverter body.

[0024] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0026] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0027] Figure 3 It is a structural side view of the utility model;

[0028] Figure 4 It is a side structural sectional view of the main body block in the utility model;

[0029] Figure 5 It is a structural schematic diagram of the installation mechanism in the utility model;

[0030] Figure 6 It is a side structural sectional view of the connecting rod in the utility model;

[0031] In the figure: 1. Inverter body; 2. Wiring; 3. Protection mechanism; 31. Main body block; 32. Through hole; 33. End block; 34. Plug-in rod; 35. Movable block; 36. Spring 1; 37. Clamping block; 38. Wire clamping mechanism 1; 39. Connecting rod; 391. Spring telescopic rod; 310. Connecting rod; 311. Connecting plate; 312. Wire clamping mechanism 2; 4. Mounting mechanism; 41. Mounting plate; 42. Clamping block; 43. Limiting block; 5. Fixing block; 6. Fastening bolts. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0033] like Figure 1 — Figure 5As shown: A photovoltaic inverter power adjustment protection device, including an inverter body 1, a wiring 2 is plugged into the lower side of the inverter body 1, and the number of the wiring 2 is multiple. A protection mechanism 3 is arranged on the lower side of the inverter body 1, and the protection mechanism 3 includes a main block 31, a through hole 32, an end block 33, a plug-in rod 34, a movable block 35, a spring 1 36, a clamping block 37, a clamping mechanism 1 38, a connecting rod 39, a clamping rod 310, a connecting plate 311 and a clamping mechanism 2 312. The clamping block 37 is symmetrically arranged on the lower sides of the two side surfaces of the inverter body 1, and a clamping mechanism 1 38 is arranged on the lower side of the inverter body 1. The clamping mechanism 1 38 includes a clamping rod 1 and a clamping rod 2, and both ends of the side surface of the clamping rod 1 are screwed. The thread is provided with a bolt 1, and the bolt 1 passes through the clamping rod 2 and is threadedly connected with a nut 1. Both ends of the clamping rod 1 and the clamping rod 2 are provided with a connecting rod 39, and the side of the clamping block 37 away from each other is provided with a clamping rod 310, and the connecting rod 39 is slidably clamped with the clamping rod 310, and the side of the connecting rod 39 close to the clamping mechanism 1 38 is provided with a movable groove, and a spring telescopic rod 391 is provided in the movable groove, and the lower end of the spring telescopic rod 391 is fixedly connected with the clamping rod 1 and the clamping rod 2 respectively, and the side of the clamping rod 2 away from the clamping rod 1 is provided with a connecting plate 311, and the upper side of the connecting plate 311 is provided with a clamping mechanism 2 312, and the clamping mechanism 2 312 includes a clamping rod three and a clamping rod four. Bolts 2 are threadedly provided at both ends of the side of rod 3, and the bolts 2 are threadedly connected through clamping rod 4 and nut 2. The wiring 2 passes between clamping rod 1 and clamping rod 2, and passes through clamping rod 3 and clamping rod 4 from the upper side of clamping mechanism 2 312 to the lower side. When the wiring 2 is pulled, the plug-in end of the wiring 2 and the inverter body 1 will not be directly pulled, so that the wiring 2 can be directly pulled downward from the inverter body 1, thereby forming a pulling protection for the connection between the wiring 2 and the inverter body 1, avoiding deformation and damage of the interface of the inverter body 1 caused by direct pulling, and directly disconnecting, avoiding short circuit or even burning of the main board of the inverter body 1, resulting in the inverter body 1 being unable to be used normally later. The main block 31 It is arranged on the lower side of the side of the inverter body 1, and a through hole 32 is formed through the side of the main body block 31. End blocks 33 are fixedly arranged at both ends of the inner side of the through hole 32. A plug-in rod 34 is inserted into the side of the end block 33 away from each other. The plug-in rod 34 penetrates the end block 33 to the inner side of the through hole 32 to provide a movable block 35. A spring 36 is provided between the movable block 35 and the end block 33. The ends of the plug-in rod 34 away from each other are fixedly connected with a clamping block 37. The clamping block 37 is clamped on the two sides of the inverter body 1. When the wiring 2 is pulled out, the subsequent pulling can directly overcome the static friction between the inverter body 1 and the clamping block 37, so that the protection mechanism 3 is directly pulled by the wiring 2 and detached from the lower side of the inverter body 1.Thereby avoiding the subsequent influence on the inverter body 1 and reducing the influence of pulling the docking wire 2 itself, and making the protection mechanism 3 detachable, it is convenient to install and disassemble regularly. The clamping rod 1 and the clamping rod 2 and the clamping rod 3 and the clamping rod 4 are each provided with a rubber plate on one side close to each other. The rubber plate is provided to increase the buffer protection of the docking wire 2. A spring 2 is provided between the bolt 1 and the clamping plate 1, and a spring 3 is provided between the bolt 2 and the clamping plate 3. In the action of the spring 2 and the spring 3, Under the use, the clamping plate 1 and the clamping plate 3 can automatically clamp the wiring 2, the contact surface of the clamp block 37 and the inverter body 1 is provided with a rough rubber buffer layer to increase the static friction and clamping protection, the upper side of the connecting plate 311 is provided with a telescopic rod in parallel, the upper end of the telescopic rod is provided with an end plate, the end plate is fixedly connected to the clamping plate 3, and the outer side of the telescopic rod is sleeved with a spring 4 to prevent the clamping mechanism 2 312 from being directly driven by the clamping mechanism 1 38 to pull down the wiring 2 and separate from the inverter after being pulled lightly. The inverter body 1 increases a certain pulling fault tolerance space. The side of the inverter body 1 away from the main block 31 is provided with a mounting mechanism 4. The four corners of the side of the mounting mechanism 4 are penetrated with mounting holes. The mounting mechanism 4 is provided with a clamping block 42 in the middle of the side close to the inverter body 1. The clamping block 42 is provided with a limiting block 43 on the side close to the inverter body 1. The side of the limiting block 43 is penetrated with a connecting hole. The limiting block 43 is screwed with the inverter body 1 through the connecting hole. The two sides of the inverter body 1 are symmetrically provided with fixing blocks 5. The fixing block 5 is threaded with a fastening bolt 6 on the side away from the mounting mechanism 4. The fastening bolt 6 thread penetrates the fixing block 5 and contacts the mounting mechanism 4. The mounting plate 41 is installed on the support frame through the mounting hole. It is slidably connected with the clamping block 42 through the limiting block 43. It is convenient to adjust the installation position of the inverter body 1 up and down within a certain range according to the installation needs. The fixing block 5 is tightened and pressed to fix the inverter body 1. ,

[0034] The working principle and use process of this utility model:

[0035] When in use, as shown in the inverter body 1 and the protection mechanism 3 in the figure, the wiring 2 is plugged into the lower side of the inverter body 1, and after the wiring 2 passes through the clamping mechanism 1 38, it goes around to the upper side of the clamping mechanism 2 312, and then passes through the clamping mechanism 2 312 to the lower side, and the bolt 1 and nut 1 are adjusted with the bolt 2 and nut 2, so that the clamping plate 1 and the clamping plate 2 and the clamping plate 3 and the clamping plate clamp the wiring 2 respectively. When the photovoltaic panel is blown up by strong wind or the support frame is directly overturned, the wiring 2 includes the line between the photovoltaic panel and the line connected to the power grid. No matter which of the above phenomena occurs, there is a problem of the wiring 2 being pulled. When the wiring 2 is pulled, it will directly act on the clamping mechanism 2 312 first. When the wiring 2 is pulled, whether it is twisted or reversed When the wiring 2 is pulled repeatedly, neither the connection end 2 nor the connection end 310 of the inverter body 1 will be directly pulled. After the wire clamping mechanism 2 312 is acted upon, since the pulling force of the main wiring 2 is downward, the wire clamping mechanism 2 312 will drive the wire clamping mechanism 1 38 downward through the connecting plate 311. The two ends of the wire clamping mechanism 1 38 will drive the spring telescopic rod 391 to extend downward. The wire clamping mechanism 1 38 will pull the wiring 2 downward, so that the wiring 2 is directly pulled downward from the inverter body 1, thereby forming a pulling protection for the connection between the wiring 2 and the inverter body 1, avoiding deformation and damage of the interface of the inverter body 1 caused by direct pulling, and directly disconnecting the connection to avoid short circuit or even burning of the main board of the inverter body 1, which will cause the inverter body 1 to be unable to be used normally later.

[0036] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0037] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A photovoltaic inverter power adjustment protection device, characterized in that: The invention comprises an inverter body (1), a wiring (2) is plugged into the lower side of the inverter body (1), the number of the wiring (2) is multiple, a protection mechanism (3) is arranged on the lower side of the inverter body (1), and the protection mechanism (3) comprises a main body block (31), a through hole (32), an end block (33), a plug-in rod (34), a movable block (35), a spring (36), a clamping block (37), a wire clamping mechanism (38), a connecting rod (39), a clamping rod (310), and a clamping rod (311). ), a connecting plate (311) and a second clamping mechanism (312), the clamping blocks (37) are symmetrically arranged on the lower sides of the two side surfaces of the inverter body (1), the lower side of the inverter body (1) is provided with a first clamping mechanism (38), the first clamping mechanism (38) comprises a first clamping rod and a second clamping rod, both ends of the side surface of the first clamping rod are threadedly provided with a bolt, the bolt passes through the second clamping rod and is threadedly connected with a nut, and both ends of the first clamping rod and the second clamping rod are provided with A connecting rod (39), a clamping rod (310) is provided on the side away from each other of the clamping blocks (37), the connecting rod (39) is slidably clamped with the clamping rod (310), a movable groove is provided on the side of the connecting rod (39) close to the clamping mechanism 1 (38), a spring telescopic rod (391) is provided in the movable groove, the lower end of the spring telescopic rod (391) is fixedly connected to the clamping rod 1 and the clamping rod 2 respectively, and a connecting rod is provided on the side of the clamping rod 2 away from the clamping rod 1 The connecting plate (311) is provided with a wire clamping mechanism 2 (312) on the upper side of the connecting plate (311), and the wire clamping mechanism 2 (312) includes a clamping rod 3 and a clamping rod 4, and both ends of the side surface of the clamping rod 3 are threadedly provided with bolts 2, and the bolts 2 pass through the clamping rod 4 and are threadedly connected with nuts 2, and the wiring (2) passes between the clamping rod 1 and the clamping rod 2, and the wiring (2) passes through the clamping rod 3 and the clamping rod 4 from the upper side of the wire clamping mechanism 2 (312) to the lower side.

2. A photovoltaic inverter power adjustment protection device according to claim 1, characterized in that: The main body block (31) is arranged on the lower side of the inverter body (1); a through hole (32) is formed through the side of the main body block (31); end blocks (33) are fixedly arranged at both ends of the inner side of the through hole (32); plug-in rods (34) are inserted into the side of the end blocks (33) away from each other; the plug-in rods (34) penetrate the end blocks (33) to the inner side of the through hole (32); a movable block (35) is arranged; a spring (36) is arranged between the movable block (35) and the end block (33); the ends of the plug-in rods (34) away from each other are fixedly connected to clamping blocks (37); and the clamping blocks (37) are clamped on the two side surfaces of the inverter body (1).

3. A photovoltaic inverter power adjustment protection device according to claim 1, characterized in that: A rubber plate is arranged on each side of the clamping rod 1 and the clamping rod 2 and the clamping rod 3 and the clamping rod 4 which are close to each other.

4. A photovoltaic inverter power adjustment protection device according to claim 1, characterized in that: A second spring is arranged between the first bolt and the first clamping plate, and a third spring is arranged between the second bolt and the third clamping plate.

5. A photovoltaic inverter power adjustment protection device according to claim 1, characterized in that: The contact surface between the clamping block (37) and the inverter body (1) is provided with a rough rubber buffer layer.

6. A photovoltaic inverter power adjustment protection device according to claim 1, characterized in that: Telescopic rods are arranged in parallel on the upper side of the connecting plate (311), and end plates are arranged on the upper ends of the telescopic rods. The end plates are fixedly connected to the clamping plate three, and springs four are sleeved on the outer sides of the telescopic rods.

7. A photovoltaic inverter power adjustment protection device according to claim 1, characterized in that: A mounting mechanism (4) is provided on a side of the inverter body (1) away from the main body block (31), and mounting holes are provided at four corners of the side of the mounting mechanism (4). A clamping block (42) is provided in the middle of a side of the mounting mechanism (4) close to the inverter body (1), and a limiting block (43) is provided on a side of the clamping block (42) close to the inverter body (1) in a sliding manner, and a connecting hole is provided on the side of the limiting block (43), and the limiting block (43) is screwed to the inverter body (1) through the connecting hole. Fixed blocks (5) are symmetrically provided on both sides of the inverter body (1), and a fastening bolt (6) is threadedly provided on a side of the fixing block (5) away from the mounting mechanism (4), and the fastening bolt (6) is threadedly penetrated through the fixing block (5) and contacts the mounting mechanism (4).

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