Photovoltaic connector

Abstract

The utility model discloses a photovoltaic connector, which relates to the field of photovoltaic technology and comprises a connecting pipe, one end of the connecting pipe is in threaded connection with a first sealing piece, and one end of the first sealing piece far away from the connecting pipe is in threaded connection with a first connecting piece. The end, away from the first sealing piece, of the first connecting piece is in threaded connection with a first end sealing piece, and a second photovoltaic cable is inserted into the first end sealing piece. According to the utility model, the rubber plug is sleeved on the surface of the second photovoltaic cable, primary sealing is completed under the action of self-contraction of the rubber plug, primary extrusion is performed on the rubber plug under the action of contraction of the rubber sleeve sleeved on the surface of the rubber plug, secondary sealing is completed, and secondary sealing is completed under the action of extrusion of the rubber sleeve by the rubber block. Compared with a conventional sealing mode which only depends on the contraction of a rubber sleeve, the sealing mode of sealing again and multiple times enables the sealing effect of the photovoltaic connector to be better, and water is not easy to enter the photovoltaic connector.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic technology, and particularly relates to a photovoltaic connector. Background Art

[0002] A photovoltaic connector is an important component used to connect devices such as photovoltaic modules, busbars, and inverters in a photovoltaic power generation system. Common brands of photovoltaic connectors include Amphenol, Stäubli, etc. Photovoltaic connectors need to have good electrical conductivity, weather resistance, sealing performance, and mechanical strength. It should be able to work stably outdoors in harsh environments for a long time to ensure reliable current transmission, while preventing water vapor, dust, etc. from entering and affecting the system performance. When installing and using a photovoltaic connector, it is necessary to operate strictly in accordance with the specifications to ensure firm and reliable connection and avoid problems such as poor contact and overheating. With the continuous development of the photovoltaic industry, the performance and quality requirements for photovoltaic connectors are also constantly increasing to ensure the efficient and stable operation of the entire photovoltaic system.

[0003] To avoid internal cables from getting wet and causing electric leakage, existing photovoltaic connectors mostly use rubber sleeves to seal the gaps where the cables contact the photovoltaic connectors. This sealing method only relies on the shrinkage of the rubber sleeve itself to complete the sealing, resulting in a poor sealing effect and being inconvenient to use. Summary of the Utility Model

[0004] The utility model provides a photovoltaic connector to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A photovoltaic connector includes a connecting pipe. One end of the connecting pipe is threadedly connected with a first seal. The end of the first seal away from the connecting pipe is threadedly connected with a first connector. The end of the first connector away from the first seal is threadedly connected with a first end seal. A second photovoltaic cable is inserted into the first end seal.

[0007] A further improvement of the technical solution of the utility model is that the end of the connecting pipe away from the first seal is threadedly connected with a second seal. The end of the second seal away from the connecting pipe is threadedly connected with a second connector. The end of the second connector away from the second seal is threadedly connected with a second end seal. A first photovoltaic cable is inserted into the second end seal.

[0008] A further improvement of the technical solution of the utility model is that the connecting pipe includes a pipe body. A first sealing ring is sleeved on the surface of the pipe body near the first seal, and a second sealing ring is sleeved on the surface of the pipe body away from the first seal.

[0009] A further improvement of the technical solution of the present utility model lies in that: the first seal includes a mounting member, one end of the mounting member is threadedly connected to one end of the pipe body, a sealing gasket is fixedly connected to the surface of the mounting member, a screw is threadedly connected inside the mounting member, and one end of the screw is rotatably connected to a driving block.

[0010] A further improvement of the technical solution of the present utility model lies in that: a rubber block is fixedly connected to the surface of the driving block, a guiding groove is fixedly connected to the inner wall of the mounting member, the inner wall of the guiding groove is slidably connected to the surface of the driving block, and the first seal and the second seal have the same structure.

[0011] A further improvement of the technical solution of the present utility model lies in that: the first connecting member includes a connecting sleeve, one end of the connecting sleeve is threadedly connected to one end of the mounting member, a third sealing ring is sleeved on the surface of one end of the connecting sleeve, a fourth sealing ring is sleeved on the surface of the other end of the connecting sleeve, a rubber sleeve is fixedly connected to the inner wall of the connecting sleeve, and the first connecting member and the second connecting member have the same structure.

[0012] A further improvement of the technical solution of the present utility model lies in that: the first end seal includes an end cap and a rubber plug, one end of the end cap is threadedly connected to one end of the connecting sleeve, and the inner wall of the end cap is fixedly connected to the surface of the rubber plug.

[0013] A further improvement of the technical solution of the present utility model lies in that: the inner diameter of the rubber plug is slightly smaller than the diameter of the second photovoltaic cable, the diameter of one end of the rubber plug is slightly larger than the inner diameter of the rubber sleeve, and the first end seal and the second end seal have the same structure.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0015] The present utility model provides a photovoltaic connector. By sleeving a rubber plug onto the surface of the second photovoltaic cable, primary sealing is completed under the self-shrinking action of the rubber plug. Under the shrinking action of the rubber sleeve sleeved onto the surface of the rubber plug, the rubber plug is initially extruded to complete secondary sealing. Under the action of the rubber block extruding the rubber sleeve, the contact between the rubber plug and the cable becomes closer, and sealing is carried out again. The sealing method of multiple seals, compared with the conventional sealing only relying on the shrinkage of the rubber sleeve, makes the sealing effect of the photovoltaic connector better and is not easy to let water in. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view structural schematic diagram of the present utility model;

[0017] Figure 2 is the exploded structural schematic diagram of the present utility model;

[0018] Figure 3Schematic cross-sectional structure diagram of the present utility model;

[0019] Figure 4 Schematic exploded structure diagram of the first end seal of the present utility model;

[0020] Figure 5 Schematic exploded structure diagram of the first connecting member of the present utility model;

[0021] Figure 6 Schematic exploded structure diagram of the first seal of the present utility model.

[0022] In the figure: 1. Connecting pipe; 11. Pipe body; 12. First sealing ring; 13. Second sealing ring; 2. First seal; 21. Mounting member; 22. Sealing gasket; 23. Screw; 24. Driving block; 25. Rubber block; 26. Guide groove; 3. First connecting member; 31. Connecting sleeve; 32. Third sealing ring; 33. Fourth sealing ring; 34. Rubber sleeve; 4. First end seal; 41. End cover; 42. Rubber plug; 5. Second seal; 6. Second connecting member; 7. Second end seal; 8. First photovoltaic cable; 9. Second photovoltaic cable. Detailed implementation manners

[0023] The present utility model will be further described in detail below with reference to the embodiments:

[0024] Embodiment 1

[0025] As Figure 1-6 shown, the present utility model provides a photovoltaic connector, which includes a connecting pipe 1. One end of the connecting pipe 1 is threadedly connected with a first seal 2. One end of the first seal 2 away from the connecting pipe 1 is threadedly connected with a first connecting member 3. One end of the first connecting member 3 away from the first seal 2 is threadedly connected with a first end seal 4. A second photovoltaic cable 9 is inserted into the first end seal 4. One end of the connecting pipe 1 away from the first seal 2 is threadedly connected with a second seal 5. One end of the second seal 5 away from the connecting pipe 1 is threadedly connected with a second connecting member 6. One end of the second connecting member 6 away from the second seal 5 is threadedly connected with a second end seal 7. A first photovoltaic cable 8 is inserted into the second end seal 7.

[0026] In this embodiment, after the second photovoltaic cable 9 is fixed by the first seal 2, the first connecting member 3 and the first end seal 4, in the same way, the second seal 5, the second connecting member 6 and the second end seal 7 are used to fix and seal the first photovoltaic cable 8. One end of the first seal 2 is threadedly connected with one end of the connecting pipe 1, and the connection is sealed by the first sealing ring 12. Subsequently, after the conductor in the first photovoltaic cable 8 is connected to the conductor in the second photovoltaic cable 9, the second seal 5 is threadedly connected with the connecting pipe 1, and the connection between the photovoltaics can be completed.

[0027] Example 2

[0028] As Figure 1-6 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the connecting pipe 1 includes a pipe body 11. A first sealing ring 12 is sleeved on the surface of the pipe body 11 near one end of the first seal 2, and a second sealing ring 13 is sleeved on the surface of the pipe body 11 far from one end of the first seal 2. The first seal 2 includes a mounting member 21. One end of the mounting member 21 is threadedly connected to one end of the pipe body 11. A sealing gasket 22 is fixedly connected to the surface of the mounting member 21. A screw 23 is threadedly connected inside the mounting member 21. One end of the screw 23 is rotatably connected to a driving block 24. A rubber block 25 is fixedly connected to the surface of the driving block 24. A guiding groove 26 is fixedly connected to the inner wall of the mounting member 21. The inner wall of the guiding groove 26 is slidably connected to the surface of the driving block 24. The structures of the first seal 2 and the second seal 5 are the same.

[0029] In this embodiment, by threadedly connecting one end of the connecting sleeve 31 to the inner wall of the mounting member 21 and sealing it with the third sealing ring 32. During the connection process, the rubber sleeve 34, the rubber plug 42, and the second photovoltaic cable 9 are inserted between the two rubber blocks 25 inserted into the mounting member 21. Under the action of rotating the screw 23, the driving block 24 slides downward along the guiding groove 26, thereby driving the two rubber blocks 25 to squeeze and deform each other, and further squeezing the surface of the rubber sleeve 34, making the contact between the rubber sleeve 34 and the rubber plug 42 and between the rubber plug 42 and the second photovoltaic cable 9 closer, further improving the sealing effect. At the same time, the setting of the sealing gasket 22 can seal the gap at the connection between the screw 23 and the mounting member 21.

[0030] Example 3

[0031] As Figure 1-6 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the first connecting member 3 includes a connecting sleeve 31. One end of the connecting sleeve 31 is threadedly connected to one end of the mounting member 21. A third sealing ring 32 is sleeved on the surface of one end of the connecting sleeve 31, and a fourth sealing ring 33 is sleeved on the surface of the other end of the connecting sleeve 31. A rubber sleeve 34 is fixedly connected to the inner wall of the connecting sleeve 31. The structures of the first connecting member 3 and the second connecting member 6 are the same. The first end seal 4 includes an end cap 41 and a rubber plug 42. One end of the end cap 41 is threadedly connected to one end of the connecting sleeve 31. The inner wall of the end cap 41 is fixedly connected to the surface of the rubber plug 42. The inner diameter of the rubber plug 42 is slightly smaller than the diameter of the second photovoltaic cable 9, and the diameter of one end of the rubber plug 42 is slightly larger than the inner diameter of the rubber sleeve 34. The structures of the first end seal 4 and the second end seal 7 are the same.

[0032] In this embodiment, the second photovoltaic cable 9 is inserted into the rubber plug 42 inside the end cap 41, and a part for cable connection is reserved. Under the action of the self - contraction of the rubber plug 42, the primary sealing is completed. Then one end of the rubber plug 42 is inserted into the rubber sleeve 34. During the insertion process, the end cap 41 is rotated to connect the end cap 41 with the connecting sleeve 31, and the fourth sealing ring 33 is used to seal the connection part.

[0033] The working principle of the photovoltaic connector will be specifically described below.

[0034] As Figure 1-6 shown, during the use process, first the second photovoltaic cable 9 is inserted into the rubber plug 42 inside the end cap 41, and a part for cable connection is reserved. Under the action of the self - contraction of the rubber plug 42, the primary sealing is completed. Then one end of the rubber plug 42 is inserted into the rubber sleeve 34. During the insertion process, the end cap 41 is rotated to connect the end cap 41 with the connecting sleeve 31, and the fourth sealing ring 33 is used to seal the connection part. Subsequently, one end of the connecting sleeve 31 is threadedly connected to the inner wall of the mounting member 21, and the third sealing ring 32 is used for sealing. During the connection process, between the rubber sleeve 34, the rubber plug 42, and the two rubber blocks 25 into which the second photovoltaic cable 9 is inserted into the mounting member 21, under the action of rotating the screw 23, the driving block 24 slides downward along the guiding groove 26, thereby driving the two rubber blocks 25 to squeeze and deform each other, and further squeezing the surface of the rubber sleeve 34, making the contact between the rubber sleeve 34, the rubber plug 42, and between the rubber plug 42 and the second photovoltaic cable 9 closer, and the sealing effect is further improved. At the same time, the setting of the sealing gasket 22 can seal the gap at the connection between the screw 23 and the mounting member 21. In the same way, after the second sealing member 5, the second connecting member 6, and the second end - part sealing member 7 fix and seal the first photovoltaic cable 8, one end of the first sealing member 2 is threadedly connected to one end of the connecting pipe 1, and the first sealing ring 12 is used to seal the connection part. Subsequently, after connecting the conductors inside the first photovoltaic cable 8 and the second photovoltaic cable 9, the second sealing member 5 is threadedly connected to the connecting pipe 1, and the connection between the photovoltaics can be completed.

[0035] The above text has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, the modifications or improvements made without departing from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A photovoltaic connector, comprising a connecting tube (1), characterized in that: One end of the connecting pipe (1) is threadedly connected to a first sealing member (2), an end of the first sealing member (2) away from the connecting pipe (1) is threadedly connected to a first connecting member (3), an end of the first connecting member (3) away from the first sealing member (2) is threadedly connected to a first end sealing member (4), and a second photovoltaic cable (9) is inserted into the interior of the first end sealing member (4).

2. A photovoltaic connector according to claim 1, characterized in that: One end of the connecting pipe (1) away from the first sealing member (2) is threadedly connected to a second sealing member (5), one end of the second sealing member (5) away from the connecting pipe (1) is threadedly connected to a second connecting member (6), one end of the second connecting member (6) away from the second sealing member (5) is threadedly connected to a second end sealing member (7), and a first photovoltaic cable (8) is inserted into the interior of the second end sealing member (7).

3. A photovoltaic connector according to claim 1, characterized in that: The connecting pipe (1) comprises a pipe body (11), a first sealing ring (12) being sleeved on a surface of the pipe body (11) at one end close to the first sealing member (2), and a second sealing ring (13) being sleeved on a surface of the pipe body (11) at one end away from the first sealing member (2).

4. A photovoltaic connector according to claim 1, characterized in that: The first sealing member (2) comprises a mounting member (21), one end of the mounting member (21) being threadedly connected to one end of the tube body (11), a sealing gasket (22) being fixedly connected to the surface of the mounting member (21), a screw (23) being threadedly connected to the interior of the mounting member (21), and one end of the screw (23) being rotatably connected to a driving block (24).

5. A photovoltaic connector according to claim 4, characterized in that: A rubber block (25) is fixedly connected to the surface of the driving block (24), a guide groove (26) is fixedly connected to the inner wall of the mounting member (21), the inner wall of the guide groove (26) is slidably connected to the surface of the driving block (24), and the first sealing member (2) and the second sealing member (5) have the same structure.

6. A photovoltaic connector according to claim 1, characterized in that: The first connecting member (3) comprises a connecting sleeve (31), one end of the connecting sleeve (31) being threadedly connected to one end of the mounting member (21), a third sealing ring (32) being sleeved on the surface of one end of the connecting sleeve (31), a fourth sealing ring (33) being sleeved on the surface of the other end of the connecting sleeve (31), a rubber sleeve (34) being fixedly connected to the inner wall of the connecting sleeve (31), and the first connecting member (3) and the second connecting member (6) having the same structure.

7. A photovoltaic connector according to claim 1, characterized in that: The first end seal (4) comprises an end cover (41) and a rubber plug (42), one end of the end cover (41) is threadedly connected to one end of the connecting sleeve (31), and the inner wall of the end cover (41) is fixedly connected to the surface of the rubber plug (42).

8. A photovoltaic connector according to claim 7, characterized in that: The inner diameter of the rubber plug (42) is slightly smaller than the diameter of the second photovoltaic cable (9), the diameter of one end of the rubber plug (42) is slightly larger than the inner diameter of the rubber sleeve (34), and the first end seal (4) and the second end seal (7) have the same structure.

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