Sealed junction box of water surface photovoltaic system

Abstract

The utility model relates to the technical field of junction boxes, and provides a sealed junction box of a water surface photovoltaic system, which comprises a threading module, a box body and a connecting module, a through hole is arranged in the box body, the threading module is fixedly connected in the through hole, and the threading module comprises a fixing ring; the fixing ring is fixedly connected to the inner wall of a through hole formed in the box body, an inner sleeve is in threaded connection with the interior of the fixing ring, a first waterproof ring is clamped between the inner sleeve and the outer surface of the fixing ring, and an outer sleeve is in threaded connection with the end, away from the box body, of the inner sleeve; a second waterproof ring is clamped between the tail end, away from the box body, of the inner sleeve and the outer sleeve in an extruding mode, and a wire harness containing hole is formed in the inner sleeve. Through the arrangement of the first waterproof ring, after the inner sleeve and the fixing ring are fixed through the fixing threads, the problems that water leaks at the connecting position, water permeates into the box body or permeates into the connecting position of the inner sleeve and the fixing ring, the threads rust, and dismounting and mounting are difficult are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of junction box, concretely relates to a sealed junction box of water surface photovoltaic system. BACKGROUND

[0002] Water surface photovoltaic system is an innovative photovoltaic power generation solution, which installs photovoltaic components on the water surface, can utilize the underutilized water resources for solar power generation, and can not only save valuable land resources, but also improve the power generation efficiency of photovoltaic components through the cooling effect of water body.

[0003] The authorized patent with application number 201922459304.5 discloses a sealed junction box: including: lower cover, lower cover is annular;Fixed groove, fixed groove is in the lower cover, fixed column is arranged in the fixed groove;Sealing washer, sealing washer is embedded in the fixed groove;Upper cover, upper cover is hollow geometric structure, the bottom surface of upper cover is open;Accommodation cavity, accommodation cavity is arranged at the opening of upper cover, accommodation cavity is matched with lower cover, fixed hole is arranged on the top surface of accommodation cavity, fixed hole corresponds with fixed column;Sealing joint, sealing joint is arranged on the side vertical surface of upper cover;Fixing piece, fixing piece is inserted into fixed hole and fixed column, and connects lower cover and upper cover;Wherein the sealing washer comprises: sealing column, sealing column is sleeved outside the fixed column;Sealing rib, sealing rib is arranged between two adjacent sealing columns, and both ends of sealing rib are connected with two sealing columns on both sides.

[0004] However, in the implementation of the related technology, the above technical scheme has the following problems: when connecting the wire harness, the sealing performance of the wire harness passing through the sealing box is insufficient, which is easy to cause leakage phenomenon, and when used on the water surface or extremely humid place, the sealing measures at the connection are less, which is easy to cause rust, oxidation and other problems at the connection, leading to the damage of the equipment.

[0005] Therefore, a sealed junction box of water surface photovoltaic system is proposed to solve the above problems. UTILITY MODEL CONTENT

[0006] The utility model discloses a sealed junction box of water surface photovoltaic system, which solves the problem of insufficient sealing performance of the wire harness passing through the sealing box in the related technology, which is easy to cause leakage phenomenon, and when used on the water surface or extremely humid place, the sealing measures at the connection are less, which is easy to cause rust, oxidation and other problems at the connection, leading to the damage of the equipment.

[0007] The utility model discloses a technical scheme as follows: a sealing junction box of water surface photovoltaic system, include: threading module, box body and connecting module, the inside of box body is provided with through -hole, the inside fixedly connected with threading module of through -hole, threading module includes fixed ring,

[0008] The fixed ring is fixedly connected to the inner wall of the through -hole of the box body, the inside of the fixed ring is threadedly connected with an inner sleeve, the outer surface of the inner sleeve and the fixed ring clamps a first waterproof ring, and the end of the inner sleeve away from the box body is threadedly connected with an outer sleeve.

[0009] The end of the inner sleeve away from the box body is extruded and clamped with a second waterproof ring, and the inside of the inner sleeve is provided with a wire harness placing hole.

[0010] Preferably, the number of threading modules is two groups, each group has four, and they are installed on both sides of the box body.

[0011] Preferably, the box body includes a device box, the upper side of the device box is provided with a waterproof gasket, and the upper side of the waterproof gasket is provided with a sealing cover.

[0012] Preferably, the inside of the sealing cover is penetrated by a fixed screw, and the fixed screw is threadedly connected in the inside of the device box after penetrating the sealing cover and the waterproof gasket.

[0013] Preferably, the inside of the box body is fixedly connected with a connecting module, the connecting module includes a connecting body, the inside of the connecting body is provided with a fixed hole, the inside of the connecting body is threadedly connected with a compression screw, and the compression screw penetrates to the bottom of the fixed hole.

[0014] Preferably, the threads of the threading module are all sawtooth threads.

[0015] Preferably, the shape of the cross section of the first waterproof ring is "8".

[0016] Preferably, the inner side of the end of the outer sleeve away from the box body has an inclination angle greater than that of the outer side wall of the end of the inner sleeve.

[0017] The working principle and beneficial effects of the utility model are as follows:

[0018] Through the setting of the first waterproof ring, after the inner sleeve and the fixing ring are fixed by threads, water leakage at the connection is avoided, water seepage into the box body or the connection between the inner sleeve and the fixing ring is avoided, and thread rusting, removal and installation difficulties are avoided, through the triangular setting of the second waterproof ring, after the second waterproof ring is passed through by the wire harness, when the inner sleeve and the outer sleeve are connected, due to the backward movement of the outer sleeve, the inner sleeve and the outer sleeve jointly cause the second waterproof ring to move towards the center of the circle and tightly wrap the wire harness, so that the wire harness enters the equipment with better sealing performance, and the cavity formed when the inner sleeve and the outer sleeve are connected is sealed and isolated from water, through the setting of the sawtooth thread, better anti-skid effect is provided, so that effective tightening and dismounting operations can be realized between the fixing ring, the inner sleeve and the outer sleeve in a harsh environment. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0020] Figure 1 The utility model provides a three-dimensional structure schematic diagram;

[0021] Figure 2 The utility model provides a box body cross section three-dimensional structure schematic diagram

[0022] Figure 3 The utility model provides a threading module cross section structure schematic diagram;

[0023] Figure 4 The utility model provides a front view structure schematic diagram.

[0024] In the drawing, 1, threading module;101, fixing ring;102, inner sleeve;103, outer sleeve;104, first waterproof ring;105, second waterproof ring;106, wire harness placing hole;2, box body;201, equipment box;202, sealing cover;203, fixed screw;204, waterproof washer;3, connecting module;301, connecting body;302, fixed hole;303, compression screw. SPECIFIC EMBODIMENT

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0026] EMBODIMENT

[0027] Please refer to Figure 1-4, a sealing junction box of a water surface photovoltaic system, comprising: a threading module 1, a box body 2 and a connecting module 3, a through hole is formed in the inside of the box body 2, the threading module 1 is fixedly connected in the inside of the through hole, the threading module 1 comprises a fixing ring 101;

[0028] The fixing ring 101 is fixedly connected to the inner wall of the through hole formed in the box body 2, the inside of the fixing ring 101 is threadedly connected with an inner sleeve 102, the outer surfaces of the inner sleeve 102 and the fixing ring 101 are clamped with a first waterproof ring 104, and the end, away from the box body 2, of the inner sleeve 102 is threadedly connected with an outer sleeve 103;

[0029] The end, away from the box body 2, of the inner sleeve 102 is clamped with a second waterproof ring 105 by extrusion of the outer sleeve 103, and the inside of the inner sleeve 102 is formed with a wire harness placing hole 106.

[0030] The technical scheme provided by the embodiment is as follows: first, the diameter of the wire harness is observed, and the outer diameter thereof should be similar to the inner diameter of the second waterproof ring 105, if the difference is too large, the second waterproof ring 105 with a different inner diameter can be replaced, then the wire harness is threaded through the first waterproof ring 105 and the wire harness placing hole 106, the compression screw 303 is rotated to be lifted upward, then the wire harness is placed into the correct fixing hole 302, the compression screw 303 is rotated in the opposite direction to compress the wire harness, the first waterproof ring 104 between the inner sleeve 102 and the fixing ring 101 is compressed, the outer sleeve 103 is rotated, before rotation, the surface of the through hole formed in the second waterproof ring 105, the end, away from the box body 2, of the inner sleeve 102 and the outer sleeve 103 should be smeared with rubber grease, then when the outer sleeve 103 is rotated, the second waterproof ring 105 will be close to the center under the extrusion of the outer sleeve 103 and the inner sleeve 102, and the wire harness is tightly sleeved, then the waterproof gasket 204 and the sealing cover 202 are placed above the equipment box 201, and the three are fixed by the fastening screw 203.

[0031] Further, the number of the threading modules 1 is two groups, and each group comprises four threading modules 1, which are installed on the two sides of the box body 2.

[0032] Specifically, the plurality of threading modules 1 are arranged, so that more connection options are provided when the wire harness is connected, and more wire harnesses can be accommodated for connection.

[0033] Further, the box body 2 comprises the equipment box 201, the upper side of the equipment box 201 is provided with the waterproof gasket 204, and the upper side of the waterproof gasket 204 is provided with the sealing cover 202.

[0034] Specifically, the waterproof gasket 204 is arranged, so that the water leakage caused by the loose connection between the equipment box 201 and the sealing cover 202 is avoided.

[0035] Further, the inside of the sealing cover 202 is penetrated by a fixing screw 203, which is screwed in the inside of the equipment box 201 after penetrating the sealing cover 202 and the waterproof gasket 204.

[0036] Specifically, the arrangement of the fixing screw 203 makes the sealing among the equipment box 201, the sealing cover 202 and the waterproof gasket 204 more reliable and the disassembly more convenient.

[0037] Further, the inside of the box body 2 is fixedly connected with a connecting module 3, which comprises a connecting body 301, the inside of which is provided with a fixing hole 302, and the inside of the connecting body 301 is screwed with a pressing screw 303, which penetrates to the bottom of the fixing hole 302.

[0038] Specifically, the arrangement of the pressing screw 303 makes the wire harness better fixed and compacted when being connected and fixed, avoiding the invalidation of the equipment caused by loose connection.

[0039] Further, the threads arranged on the threading module 1 are all sawtooth threads.

[0040] Specifically, the special design of the sawtooth threads provides better anti-skid effect, so that effective tightening and disassembly operation can be realized in harsh environment.

[0041] Further, the cross section of the first waterproof ring 104 is in the shape of "8".

[0042] Specifically, the design of "8" shape, with thicker ends and thinner middle, makes the sealing performance and effect better.

[0043] Further, the inner side of the distal end of the outer sleeve 103 from the box body 2 is inclined at an angle larger than that of the outer side wall of the distal end of the inner sleeve 102.

[0044] Specifically, the different angles make the second waterproof ring 105 in the middle of the two better close to the center when being installed, so that the sealing effect of the wire harness, the inner sleeve 102 and the outer sleeve 103 is better.

[0045] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sealed junction box for a photovoltaic system on water, comprising a threading module (1), a box body (2) and a connection module (3), characterized in that, The inside of the box body (2) is provided with a through hole, the inside of the through hole is fixedly connected with a threading module (1), the threading module (1) comprises a fixed ring (101); the fixed ring (101) is fixedly connected in the through hole of the box body (2), the inside of the fixed ring (101) is screw-connected with an inner sleeve (102), the outer surface of the inner sleeve (102) and the fixed ring (101) clamps a first waterproof ring (104), the end of the inner sleeve (102) away from the box body (2) is screw-connected with an outer sleeve (103). The end of the inner sleeve (102) away from the box body (2) is extruded and clamped with a second waterproof ring (105), the inside of the inner sleeve (102) is provided with a wire harness placing hole (106).

2. A sealed junction box for a water-based photovoltaic system according to claim 1, wherein: The number of the threading module (1) is two groups, each group has four, which are installed on the two sides of the box body (2).

3. A sealed junction box for a water-based photovoltaic system as defined in claim 1, wherein: The box body (2) comprises a device box (201), the upper side of the device box (201) is provided with a waterproof gasket (204), the upper side of the waterproof gasket (204) is provided with a sealing cover (202).

4. A sealed junction box for a water-based photovoltaic system according to claim 3, wherein: The inside of the sealing cover (202) penetrates a fixing screw (203), the fixing screw (203) is screw-connected in the inside of the device box (201) after penetrating the sealing cover (202) and the waterproof gasket (204).

5. A sealed junction box for a water-based photovoltaic system as defined in claim 1, wherein: The inside of the box body (2) is fixedly connected with a connecting module (3), the connecting module (3) comprises a connecting body (301), the inside of the connecting body (301) is provided with a fixing hole (302), the inside of the connecting body (301) is screw-connected with a compression screw (303), the compression screw (303) penetrates to the bottom of the fixing hole (302).

6. A sealed junction box for a water-based photovoltaic system as defined in claim 1, wherein: The threads of the threading module (1) are all sawtooth threads.

7. A sealed junction box for a water-based photovoltaic system as defined in claim 1, wherein: The shape of the cross section of the first waterproof ring (104) is "8" shape.

8. A sealed junction box for a water-based photovoltaic system as defined in claim 1, wherein: The inner side of the end of the outer sleeve (103) away from the box body (2) should have an inclination angle greater than the inclination angle of the outer side wall of the end of the inner sleeve (102).

Images