Cable protection device for photovoltaic power generation power distribution cabinet

Abstract

The utility model discloses a cable protection device for a photovoltaic power generation power distribution cabinet, and relates to the technical field of power distribution cabinet wire outlet protection, the cable protection device comprises fireproof mud, the fireproof mud is composed of two semicircular structures and is arranged at the inner side of a compaction assembly, and the compaction assembly provides a storage space for the fireproof mud; the upper end and the lower end of the pressing assembly are also provided with plugging assemblies, and the plugging assemblies are used for plugging the wire outlet of the power distribution cabinet, fixing the pressing assembly and the power distribution cabinet, and separating the fireproof mud from the external space. According to the utility model, through arranging the pressing assembly and the plugging assembly, sealing protection among a plurality of outgoing cables and the outgoing port of the power distribution cabinet can be realized, and the plugging assembly can play a role in separating the fireproof mud from the external environment, thereby effectively preventing the fireproof mud from being exposed in the external environment for a long time and causing aggravation of aging. The effective service life of the fireproof mud is further prolonged, and the fireproof mud can better adapt to the outdoor working environment of the photovoltaic power distribution cabinet.

Description

Technical Field

[0001] This utility model relates to the field of cable protection technology for distribution cabinet outlets, specifically a cable protection device for photovoltaic power generation distribution cabinets. Background Technology

[0002] The distribution cabinet (also known as photovoltaic distribution cabinet or grid-connected cabinet) in a photovoltaic power generation system is a key device that connects the photovoltaic array, inverter and power grid, and is responsible for the distribution, protection and monitoring of electrical energy.

[0003] When assembling a photovoltaic power generation distribution cabinet, fireproof putty is often used to seal the outlet of the distribution cabinet. This not only provides a sealing and protection effect, but also prevents the outgoing cables from being damaged due to frequent friction with the outlet of the distribution cabinet, thus protecting the cables.

[0004] However, photovoltaic power generation distribution cabinets are sometimes located outdoors, and fireproof putty exposed to the air for a long time is prone to hardening and cracking due to ultraviolet rays and oxidation, thus losing its sealing properties. Based on this, a cable protection device for photovoltaic power generation distribution cabinets is provided. Utility Model Content

[0005] The purpose of this utility model is to provide a cable protection device for photovoltaic power generation distribution cabinets in order to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cable protection device for a photovoltaic power generation distribution cabinet, comprising fireproof putty, wherein the fireproof putty is composed of two semi-circular structures and is disposed inside a clamping assembly, the clamping assembly provides storage space for the fireproof putty, and the combination and fixing of the clamping assembly is used to achieve the wrapping of the outgoing cable with the fireproof putty;

[0007] The upper and lower ends of the clamping assembly are also provided with sealing components. After the clamping assembly passes through the outlet of the distribution cabinet, it is connected to the clamping assembly by two sealing components through threads and fits against the inner and outer sides of the distribution cabinet. This is used to seal the outlet of the distribution cabinet, fix the clamping assembly to the distribution cabinet, and separate the fireproof putty from the external space.

[0008] As a further embodiment of this utility model: the clamping assembly includes a semi-cylinder, a mating block, a mating groove, and a side T-shaped connecting hole;

[0009] Two semi-cylinders are provided, and the two semi-cylinders are symmetrically fitted together to form a cylindrical structure. The fireproof putty is symmetrically distributed in the middle of the inner side of the two semi-cylinders. The two semi-cylinders are brought closer to the cable to achieve the wrapping of the cable with fireproof putty.

[0010] The docking blocks and docking grooves are symmetrically distributed on the two end faces of the semi-cylinder with the center line of the semi-cylinder as the center. The docking blocks are fixedly connected to the semi-cylinder, and the docking grooves extend into the interior of the semi-cylinder. The docking blocks and docking grooves on the two semi-cylinders are diagonally distributed. The two semi-cylinders are connected to each other through two sets of docking blocks and docking grooves to achieve automatic alignment.

[0011] The side T-shaped connecting hole is opened on the outside of the semi-cylinder and penetrates through both end faces of the semi-cylinder. The bolt passes through the side T-shaped connecting hole on the two semi-cylinders and is tightened with a nut to fix the two semi-cylinders.

[0012] As a further embodiment of this utility model: the sealing assembly includes a locking nut, a shrink sleeve, and a plastic spiral support piece;

[0013] The shrink sleeve is fixed to the top of the locking nut, and the plastic spiral support plate is distributed inside the shrink sleeve and extends to the top of the shrink sleeve. The plastic spiral support plate is used to provide support for the shrink sleeve.

[0014] The two sets of locking nuts, shrink sleeves, and plastic spiral support plates are symmetrically distributed and sleeved on the outside of the outgoing cable. When the cylindrical structure composed of the two semi-cylinders passes through the outlet of the distribution cabinet, it is connected to the cylindrical structure by the upper and lower threads through the two locking nuts and fits against the inside and outside of the distribution cabinet, thereby fixing the cylindrical structure to the distribution cabinet and sealing the outlet of the distribution cabinet.

[0015] By pulling out the plastic spiral support piece, the shrink sleeve shrinks and fits against the outside of the outgoing cable, thus sealing the upper and lower ports of the cylinder structure.

[0016] As a further improvement of this utility model: the outer diameter of the cylindrical structure composed of the two semi-cylinders matches the diameter of the outlet hole of the power distribution cabinet, and the outer side of the cylindrical structure is formed with an external thread groove that matches the internal thread of the locking nut.

[0017] As a further improvement of this utility model: an inner groove is formed at the position where the semi-cylinder contacts the fireproof putty, which is used to realize the vertical limitation of the fireproof putty;

[0018] The fireproof putty has a gap between its upper and lower ends and the upper and lower ends of the semi-cylinder.

[0019] As a further improvement of this utility model, the inner diameter of the plastic spiral support sheet is larger than the outer diameter of the multiple outgoing cables.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] By setting up clamping and sealing components, sealing protection can be achieved between multiple outgoing cables and at the outlet of the distribution cabinet. The sealing components can also isolate the fireproof sealant from the external environment, effectively preventing the fireproof sealant from being exposed to the external environment for a long time, which would lead to accelerated aging and further extend the effective service life of the fireproof sealant, making it better suited to the outdoor working environment of the photovoltaic distribution cabinet. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a structural distribution diagram of the sealing component, the clamping component, and the outgoing cable of this utility model;

[0024] Figure 3 This is a structural cross-sectional view of the sealing component and the clamping component of this utility model.

[0025] In the diagram: 1. Fireproof putty; 2. Compression assembly; 201. Semi-cylinder; 202. Connecting block; 203. Connecting groove; 304. Side T-shaped connection hole; 3. Sealing assembly; 301. Locking nut; 302. Shrink sleeve; 303. Plastic spiral support plate; 4. Outgoing cable. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-3 In this embodiment of the utility model, a cable protection device for a photovoltaic power generation distribution cabinet includes fireproof putty 1. The fireproof putty 1 is composed of two semi-circular structures and is disposed inside the clamping component 2. The clamping component 2 provides storage space for the fireproof putty 1, and the combination and fixation of the clamping component 2 are used to realize the wrapping of the outgoing cable 4 by the fireproof putty 1.

[0028] The upper and lower ends of the clamping component 2 are also provided with sealing components 3. After the clamping component 2 passes through the outlet of the distribution cabinet, it is connected to the clamping component 2 by two sealing components 3 through threads and fits against the inside and outside of the distribution cabinet. This is used to seal the outlet of the distribution cabinet, fix the clamping component 2 to the distribution cabinet, and separate the fireproof putty 1 from the external space.

[0029] The clamping assembly 2 includes a semi-cylinder 201, a mating block 202, a mating groove 203, and a side T-shaped connecting hole 204;

[0030] Two semi-cylinders 201 are provided, and the two semi-cylinders 201 are symmetrically attached to form a cylindrical structure. Fireproof putty 1 is symmetrically distributed in the middle of the inner side of the two semi-cylinders 201. The two semi-cylinders 201 are brought closer to the cable to achieve the wrapping of the cable by the fireproof putty 1.

[0031] The docking blocks 202 and docking grooves 203 are symmetrically distributed on the two end faces of the semi-cylinder 201 with the center line of the semi-cylinder 201 as the center. The docking blocks 202 are fixedly connected to the semi-cylinder 201, and the docking grooves 203 extend into the interior of the semi-cylinder 201. The docking blocks 202 and docking grooves 203 on the two semi-cylinders 201 are diagonally distributed. The two semi-cylinders 201 are connected to each other through two sets of docking blocks 202 and docking grooves 203 to achieve automatic alignment operation.

[0032] The side T-shaped connecting hole 204 is opened on the outside of the semi-cylinder 201 and passes through the two end faces of the semi-cylinder 201. The bolt passes through the side T-shaped connecting hole 204 on the two semi-cylinders 201 and is tightened with a nut to fix the two semi-cylinders 201.

[0033] The sealing assembly 3 includes a locking nut 301, a shrink sleeve 302, and a plastic spiral support plate 303;

[0034] The shrink sleeve 302 is fixed to the top of the locking nut 301. The plastic spiral support plate 303 is distributed inside the shrink sleeve 302 and extends to the top of the shrink sleeve 302. The plastic spiral support plate 303 is used to provide support for the shrink sleeve 302.

[0035] Two sets of locking nuts 301, shrink sleeves 302, and plastic spiral support plates 303 are symmetrically distributed and sleeved on the outside of the outgoing cable 4. When the cylindrical structure composed of two semi-cylinders 201 passes through the outlet of the distribution cabinet, it is connected to the cylindrical structure by the upper and lower threads of the two locking nuts 301 and fits against the inside and outside of the distribution cabinet, thereby fixing the cylindrical structure to the distribution cabinet and sealing the outlet of the distribution cabinet.

[0036] By pulling out the plastic spiral support piece 303, the shrink sleeve 302 shrinks and fits against the outside of the outgoing cable 4, which is used to seal the upper and lower ports of the cylindrical structure.

[0037] The outer diameter of the cylindrical structure composed of two semi-cylinders 201 matches the diameter of the outlet hole of the distribution cabinet, and the outer side of the cylindrical structure is formed with an external thread groove that matches the internal thread of the locking nut 301.

[0038] An inner groove is formed at the position where the semi-cylinder 201 contacts the fireproof putty 1, which is used to realize the vertical limitation of the fireproof putty 1. The upper and lower ends of the fireproof putty 1 are spaced apart from the upper and lower ends of the semi-cylinder 201.

[0039] In this embodiment, the protective device operates as follows:

[0040] Before the outgoing cable 4 passes through the outlet of the distribution cabinet, a set of sealing components 3 is first used to connect the outgoing cable 4, with the shrink sleeves 302 facing downwards. Then, the outgoing cable 4 is passed through the outlet and enters the distribution cabinet. Then, another set of sealing components 3 is used to connect the outgoing cable 4, with the shrink sleeves 302 facing upwards. After that, the end of the outgoing cable 4 can be connected to the electrical components inside the distribution cabinet.

[0041] After the outgoing cable 4 is connected, the outlet can be sealed. At this time, take out the clamping component 2 and bring the two semi-cylinders 201 closer to the middle of the outgoing cable 4 (it should be noted that the fireproof putty 1 is pre-filled inside the semi-cylinders 201 at the factory). During this process, the fireproof putty 1 will come into contact with the outgoing cable 4 and deform under force. When the two semi-cylinders 201 are completely attached, the fireproof putty 1 completely wraps the outgoing cable 4.

[0042] Then, by passing bolts through the side T-shaped connecting holes 204 on the two semi-cylinders 201 and tightening them with nuts, the two semi-cylinders 201 can be fixed (it should be noted that the bolts and nuts are completely retracted inside the ports of the side T-shaped connecting holes 204 and will not affect subsequent installation).

[0043] Next, insert the two fixed semi-cylinders 201 through the outlet, then bring the two locking nuts 301 on the two sets of sealing components 3 close to the cylindrical structure formed by the two semi-cylinders 201, and tighten the locking nuts 301 with the threaded connection of the cylindrical structure. Finally, the two locking nuts 301 fit against the inner and outer sides of the distribution cabinet, thus sealing the outlet and fixing the cylindrical structure to the distribution cabinet.

[0044] Next, manually pull the plastic spiral support piece 303 out of the shrink sleeve 302. At this time, the shrink sleeve 302 loses its internal support and will shrink under the elasticity of its own material. At the same time, the shrink sleeve 302 is heated and shrunken by flame. Finally, the shrink sleeve 302 is tightly attached to the outside of the outgoing cable 4. This seals the upper and lower ends of the cylinder structure, thereby isolating the fireproof putty from the external environment. This effectively prevents the fireproof putty from being exposed to the external environment for a long time, which would lead to accelerated aging and further extend the effective service life of the fireproof putty. It can better adapt to the outdoor working environment of the photovoltaic distribution cabinet.

[0045] Please refer to this carefully. Figures 1-3 The inner diameter of the plastic spiral support plate 303 is larger than the outer diameter of the multiple outgoing cables 4.

[0046] In this embodiment: This structure allows the locking nut 301 to rotate freely when the plastic spiral support plate 303 is not removed, ensuring smooth installation of the locking nut 301.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cable protection device for a photovoltaic power distribution cabinet, comprising a fireclay (1), characterized in that, The fireproofing mortar (1) is composed of two semicircular structures and is arranged on the inner side of the compression assembly (2), the compression assembly (2) provides a storage space for the fireproofing mortar (1), and the compression assembly (2) is fixed by combination to realize the wrapping of the fireproofing mortar (1) on the outgoing cable (4); The upper and lower ends of the compression assembly (2) are further provided with the blocking assemblies (3), after the compression assembly (2) passes through the outgoing port of the power distribution cabinet, the two blocking assemblies (3) are threadedly connected with the compression assembly (2) and are attached to the inner and outer sides of the power distribution cabinet, so as to realize the blocking of the outgoing port of the power distribution cabinet, the fixing of the compression assembly (2) and the power distribution cabinet, and the separation of the fireproofing mortar (1) and the external space.

2. The cable protection device for a photovoltaic power generation distribution cabinet according to claim 1, characterized in that, The compression assembly (2) comprises a semicircular cylinder (201), a butt block (202), a butt groove (203) and a side T-shaped connecting hole (204); The two semicircular cylinders (201) are symmetrically attached and combined to form a cylinder structure, and the fireproofing mortar (1) is symmetrically distributed in the middle part of the inner side of the two semicircular cylinders (201) and is close to the cable through the two semicircular cylinders (201) to realize the wrapping of the fireproofing mortar (1) on the cable; The butt blocks (202) and the butt grooves (203) are symmetrically distributed on the two end faces of the semicircular cylinder (201) with the center line of the semicircular cylinder (201) as the center, the butt blocks (202) are fixedly connected with the semicircular cylinder (201), the butt grooves (203) extend into the semicircular cylinder (201), the butt blocks (202) and the butt grooves (203) on the two semicircular cylinders (201) are diagonally distributed, and the two semicircular cylinders (201) are butted with each other through the two groups of butt blocks (202) and butt grooves (203) to realize the automatic alignment operation; The side T-shaped connecting hole (204) is formed on the outer side of the semicircular cylinder (201) and penetrates through the two end faces of the semicircular cylinder (201), a bolt penetrates through the side T-shaped connecting holes (204) on the two semicircular cylinders (201) and is screwed with a nut to fix the two semicircular cylinders (201).

3. The cable protection device for a photovoltaic power generation distribution cabinet according to claim 2, characterized in that, The blocking assembly (3) comprises a locking nut (301), a shrinkable rubber sleeve (302) and a plastic spiral supporting piece (303); The shrinkable rubber sleeve (302) is fixed on the top of the locking nut (301), and the plastic spiral supporting piece (303) is distributed on the inner side of the shrinkable rubber sleeve (302) and extends out of the top of the shrinkable rubber sleeve (302), and the plastic spiral supporting piece (303) is used to provide support for the shrinkable rubber sleeve (302); The two groups of locking nuts (301), shrinkable rubber sleeves (302) and plastic spiral supporting pieces (303) are symmetrically distributed on the outer side of the outgoing cable (4), after the cylinder structure composed of the two semicircular cylinders (201) passes through the outgoing port of the power distribution cabinet, the two locking nuts (301) are threadedly connected with the cylinder structure and are attached to the inner and outer sides of the power distribution cabinet, so as to realize the fixing of the cylinder structure and the power distribution cabinet and the blocking of the outgoing port of the power distribution cabinet. The shrinkable rubber sleeve (302) is shrunk and fitted to the outside of the outgoing cable (4) by pulling out the plastic spiral supporting sheet (303), so as to realize the plugging of the upper and lower ports of the cylinder structure.

4. The cable protection device for a photovoltaic power generation distribution cabinet according to claim 3, characterized in that, The outer diameter of the cylinder structure composed of two half cylinders (201) matches the outgoing port aperture of the power distribution cabinet, and the outer side of the cylinder structure is formed with an outer thread groove matching the inner thread of the locking nut (301).

5. The cable protection device for photovoltaic power generation distribution cabinet according to claim 2, characterized in that, An inner groove is formed at the position where the half cylinder (201) is in contact with the fireproof mortar (1), so as to realize the vertical limiting of the fireproof mortar (1). The upper and lower ends of the fireproof mortar (1) have a spacing from the upper and lower ends of the half cylinder (201).

6. The cable protection device for a photovoltaic power generation distribution cabinet according to claim 3, characterized in that, The inner diameter of the plastic spiral supporting sheet (303) is greater than the distributed outer diameter of the multiple outgoing cables (4).

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