Drawing type wire blocking device

Abstract

The invention provides a drawing type wire blocking device which is arranged at the bottom of an inverter and comprises a wire blocking plate and a wire blocking box, and the wire blocking plate is arranged on the wire blocking box and is in sliding connection with the wire blocking box. The wire blocking box comprises a sliding groove, the sliding groove is formed in a bottom plate of the wire blocking box, and the wire blocking plate and the sliding groove are matched with each other to achieve sliding connection. Input and output cables of the string type inverter are arranged in the cable blocking device, the cable blocking device is opened and closed through sliding of the cable blocking plate on the cable blocking box, when the cables need to be maintained, the cable blocking plate is pulled to open the cable blocking device, and maintenance is convenient. And after maintenance is finished, the wire blocking plate is pushed to close the wire blocking device, and the working efficiency can be improved. And by arranging the wire baffle plate, the direct-current and alternating-current cables of the inverter can be prevented from cracking due to long-time exposure.

Description

Technical Field

[0001] The present invention belongs to the field of wire blocking devices, and particularly relates to a pull-out wire blocking device. Background Art

[0002] With the development of renewable energy, as an essential device in the solar power generation system, the string inverter has become an important part of the photovoltaic system. The input and output cables of the existing string inverters are exposed outside. To prevent the cables from cracking due to long-term exposure to the sun, manufacturers use fixed baffles for protection, and power stations mostly use sleeves for protection. When the inverter fails and the cables need to be repaired, the fixed wire blocking plates need to be removed for cable repair, increasing the operation and maintenance difficulty; or during construction, sleeves need to be used to protect the input and output cables exposed outside the inverter, increasing the construction difficulty.

[0003] The existing photovoltaic string inverters use fixed wire blocking plates, which are fixed with nuts. When the inverter fails and the cables need to be repaired, the fixed wire blocking plates need to be removed for repair, resulting in relatively high operation and maintenance difficulty. For inverters without baffles, during construction, sleeves need to be used to protect the input and output cables exposed outside the inverter, increasing the construction difficulty.

[0004] This application designs a pull-out wire blocking device. The wire blocking plate is made of polytetrafluoroethylene, which has characteristics such as insulation, corrosion resistance, sliding property, and wear resistance. When the inverter fails and the cables need to be repaired, the wire blocking plate can be quickly pulled in one direction to open for repair work; at the same time, it has a cable protection function, reducing the on-site construction volume. Summary of the Invention

[0005] In view of the above problems, the present invention provides a pull-out wire blocking device, which is arranged at the bottom of the inverter and includes a wire blocking plate and a wire blocking box. The wire blocking plate is arranged on the wire blocking box and is slidably connected to the wire blocking box.

[0006] Further, the wire blocking box includes a sliding groove, which is arranged on the bottom plate of the wire blocking box. The wire blocking plate cooperates with the sliding groove to achieve a sliding connection.

[0007] Further, there are two groups of the sliding grooves, which are oppositely arranged on the top plate and the bottom plate of the wire blocking box. The top and bottom of the wire blocking plate are respectively placed in the two groups of sliding grooves and cooperate with the sliding grooves to achieve a sliding connection.

[0008] Further, pulleys are arranged at the bottom of the wire blocking plate, and the pulleys cooperate with each other in the sliding groove to achieve a sliding connection.

[0009] Further, the wire blocking device further includes a locking device, which is arranged on the outer sides of the wire blocking plate and the wire blocking box adjacent to the wire blocking plate to achieve the locking and unlocking functions of the wire blocking plate and the wire blocking box.

[0010] Furthermore, the locking device includes a rotating rod and a latch. The rotating rod is arranged on the side of the wire blocking plate and can rotate axially. The latch is arranged on the outer side of the wire blocking box adjacent to the wire blocking plate. The rotation of the rotating rod realizes the locking and unlocking functions with the latch.

[0011] Furthermore, the locking device includes a spring rod and a groove. The spring rod is arranged on the wire blocking plate. The groove is arranged inside the side plate of the wire blocking box and corresponds to the position of the spring rod. By pressing the spring rod, the cooperation with the groove is realized, and the locking and unlocking functions are achieved.

[0012] Furthermore, the wire blocking plate is made of polytetrafluoroethylene polymer material.

[0013] Furthermore, a sealing strip is arranged at the bottom of the wire blocking plate, and the sealing strip plays a sealing role for the wire blocking plate on the sliding groove.

[0014] Furthermore, a handle is arranged on the wire blocking plate.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows:

[0016] 1. In the present application, by arranging a wire blocking device, the input and output cables of the string inverter are placed therein. By sliding the wire blocking plate on the wire blocking box, the opening and closing of the wire blocking device are realized. When the cable needs to be repaired, the wire blocking plate is pulled to open the wire blocking device, which is convenient for repair. After the repair is completed, the wire blocking plate is pushed to close the wire blocking device, which can improve work efficiency. By arranging the wire blocking plate, it can prevent the DC and AC cables of the inverter from cracking due to long-term exposure to the sun.

[0017] 2. The wire blocking plate of the present application is made of polytetrafluoroethylene polymer material, which has the characteristics of insulation, corrosion resistance, sliding property, wear resistance, etc., prevents the cable from cracking due to sun exposure, and is convenient for maintenance personnel to repair the inverter cable.

[0018] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures pointed out in the specification, the claims, and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 Shows the locking schematic diagram of the wire blocking device in the embodiment of the present invention;

[0021] Figure 2 Shows the opening schematic diagram of the wire blocking device in the embodiment of the present invention.

[0022] In the figure, 1 - wire blocking plate, 2 - wire blocking box, 21 - sliding groove, 3 - locking device, 4 - inverter. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] As Figure 1 shown, a pull - type wire blocking device is provided at the bottom of the inverter 4, and includes a wire blocking plate 1 and a wire blocking box 2. The wire blocking plate 1 is arranged on the wire blocking box 2 and is slidably connected to the wire blocking box 2.

[0025] The wire blocking device is provided at the bottom of the inverter 4 to protect the connection head parts of the input and output cables connected to the inverter 4. Because the connection head parts are prone to cracking and loosening due to exposure to the sun, resulting in a high maintenance frequency, the input and output connection heads of the inverter 4 are arranged in the wire blocking device for easy maintenance.

[0026] The wire blocking plate 1 and the wire blocking box 2 are combined to form a square box. The connection heads of the input and output cables connected to the inverter 4 are placed in the wire blocking box 2. By pulling open the wire blocking plate, the wire blocking device is opened, so that the connection heads of the input and output cables are exposed, facilitating maintenance by workers.

[0027] The wire blocking box 2 includes a sliding groove 21. The sliding groove 21 is arranged on the bottom plate of the wire blocking box 2, and the wire blocking plate 1 and the sliding groove 21 cooperate with each other to achieve a sliding connection.

[0028] The sliding groove 21 is arranged on the inner edge of the bottom plate of the wire blocking box 2 and on the same side as the setting position of the wire blocking plate 1. The width of the sliding groove 21 is greater than the thickness of the wire blocking plate, so that the bottom edge of the wire blocking plate 1 can be placed in the sliding groove 21 and can slide in the sliding groove 21. On the other hand, it can limit the wire blocking plate 1 to prevent the wire blocking plate 1 from detaching from the wire blocking box 2.

[0029] In some embodiments, there are two sets of the sliding grooves 21, which are oppositely arranged on the top plate and the bottom plate of the wire blocking box 2. The top and bottom of the wire blocking plate 1 are respectively placed in the two sets of sliding grooves 21, and are slidably connected with the sliding grooves 21 in cooperation with each other.

[0030] The two sets of the sliding grooves 21 are respectively arranged at the inner edges of the top plate and the inner edges of the bottom plate, and are oppositely arranged. The top and bottom ends of the wire blocking plate 1 are respectively placed in the two sets of sliding grooves 21, so that the wire blocking plate 1 is more stable when sliding on the wire blocking box 2, and can also play a role in limiting the wire blocking plate 1.

[0031] In some embodiments, pulleys are arranged at the bottom of the wire blocking plate 1, and the pulleys are slidably connected with each other in the sliding grooves 21.

[0032] In order to improve the convenience of the sliding of the wire blocking plate 1 in the sliding grooves 21, the opening and closing of the wire blocking device are realized by the sliding of the pulleys arranged at the bottom of the wire blocking plate 1 in the sliding grooves 21.

[0033] The wire blocking device further includes a locking device 3, and the locking device 3 is arranged on the outer side of the wire blocking plate 1 and the wire blocking box 2 adjacent to the wire blocking plate 1 to realize the locking and unlocking functions of the wire blocking plate 1 and the wire blocking box 2.

[0034] In order to prevent the wire blocking plate 1 from being easily loosened or touched by external objects when the wire blocking plate 1 slides on the wire blocking box 2, which may cause the wire blocking plate 1 to slide open the wire blocking device, exposing the joints of the input and output cables of the inverter 4. On the one hand, it will cause potential safety hazards, and on the other hand, it will also be more likely to cause damage. Therefore, by setting the locking device 3, after the wire blocking plate 1 slides to the fully closed state to the left, the locking device 3 is activated to fix the wire blocking plate 1 and the wire blocking box 2, so that the wire blocking plate 1 is not easily slid or loosened.

[0035] As Figure 2 shown, when it is necessary to repair the input and output joints of the inverter 4, unlock the locking device 3, and pull the wire blocking plate 1 to the right, so that the wire blocking plate 1 slides to the right on the sliding grooves 21, opening the wire blocking device, exposing the input and output joints of the inverter 4, which is convenient for the staff to directly repair. Compared with the traditional nut connection method, the working efficiency is higher.

[0036] In some embodiments, the locking device 3 includes a rotating rod and a lock catch. The rotating rod is arranged on the side of the wire blocking plate 1 and can rotate axially. The lock catch is arranged on the outer side of the wire blocking box 2 adjacent to the wire blocking plate 1, and the rotation of the rotating rod realizes the locking and unlocking functions with the lock catch.

[0037] In some embodiments, the locking device 3 includes a spring rod and a groove. The spring rod is disposed on the wire baffle 1, and the groove is arranged inside the side plate of the wire retaining box 2 and corresponds to the position of the spring rod. The cooperation with the groove is achieved by pressing the spring rod to realize the locking and unlocking functions.

[0038] The wire baffle 1 is made of polytetrafluoroethylene (PTFE). The polytetrafluoroethylene material has the characteristics of insulation, corrosion resistance, sliding property, wear resistance, etc., which can prevent the cable from being exposed to the sun and cracking and facilitate the maintenance personnel to repair the inverter cable.

[0039] A sealing strip is arranged at the bottom of the wire baffle 1, and the sealing strip plays a sealing role for the wire baffle 1 on the sliding groove 21. The sealing strip is provided to prevent rainwater or moisture from entering the wire retaining box 2 to contact the input and output connectors of the inverter 4 in rainy or humid outdoor environments, which is likely to cause potential safety hazards.

[0040] A handle is arranged on the wire baffle 1, which is convenient for pushing and pulling the wire baffle 1 more conveniently and quickly.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pull-out wire blocking device is arranged at the bottom of an inverter (4). Characterized in that: It includes a wire blocking plate (1) and a wire blocking box (2), and the wire blocking plate (1) is arranged on the wire blocking box (2) and is slidably connected to the wire blocking box (2).

2. The pull-out wire blocking device according to claim 1, Characterized in that, The wire blocking box (2) includes a sliding groove (21), and the sliding groove (21) is arranged on the bottom plate of the wire blocking box (2), and the wire blocking plate (1) cooperates with the sliding groove (21) to achieve a sliding connection.

3. The pull-out wire blocking device according to claim 2, Characterized in that, There are two groups of the sliding grooves (21), which are relatively arranged on the top plate and the bottom plate of the wire blocking box (2), and the top and bottom of the wire blocking plate (1) are respectively placed in the two groups of sliding grooves (21) and cooperate with the sliding grooves (21) to achieve a sliding connection.

4. The pull-out wire blocking device according to claim 2, Characterized in that, The bottom of the wire blocking plate (1) is provided with pulleys, and the pulleys cooperate with each other in the sliding groove (21) to achieve a sliding connection.

5. The pull-out wire blocking device according to claim 1, Characterized in that, The wire blocking device further includes a locking device (3), and the locking device (3) is arranged on the outer side of the wire blocking plate (1) and the wire blocking box (2) adjacent to the wire blocking plate (1) to achieve the locking and unlocking functions of the wire blocking plate (1) and the wire blocking box (2).

6. The pull-out wire blocking device according to claim 5, Characterized in that, The locking device (3) includes a rotating rod and a lock catch. The rotating rod is arranged on the side of the wire blocking plate (1) and can rotate axially. The lock catch is arranged on the outer side of the wire blocking box (2) adjacent to the wire blocking plate (1), and the rotation of the rotating rod realizes the locking and unlocking functions with the lock catch.

7. The pull-out wire blocking device according to claim 5, Characterized in that, The locking device (3) includes a spring rod and a groove. The spring rod is arranged on the wire blocking plate (1), and the groove is arranged inside the side plate of the wire blocking box (2) and corresponds to the position of the spring rod. By pressing the spring rod, the cooperation with the groove is realized to achieve the locking and unlocking functions.

8. The pull-out wire blocking device according to claim 1, Characterized in that, The wire blocking plate (1) is made of polytetrafluoroethylene material.

9. The pull-out wire blocking device according to claim 2, Characterized in that, The bottom of the wire blocking plate (1) is provided with a sealing strip, and the sealing strip plays a sealing role for the wire blocking plate (1) on the sliding groove (21).

10. The pull-out wire blocking device according to claim 1, Characterized in that, A handle is arranged on the wire blocking plate (1).

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