Multipurpose photoelectric integrated optical fiber composite power cable junction box

Abstract

The invention relates to the technical field of cable installation, in particular to a multipurpose photoelectric integrated optical fiber composite power cable junction box which comprises a box body, a wire inlet and an air hole, the wire inlet and the air hole are formed in the bottom of the box body, an installation ring is fixedly installed at the top of the wire inlet, and a deformable annular air bag is installed in the installation ring. An installation frame located over the air hole is fixedly installed in the box body, a containing cavity is formed in the bottom of the installation frame, a sealing piece matched with the air hole is slidably installed in the containing cavity, a liquid guide pipe is fixedly installed between the containing cavity and the annular air bag, and a liquid injection assembly is further fixedly installed in the box body; a liquid injection pipe is fixedly installed between the output end of the liquid injection assembly and the containing cavity, and a liquid level sensor electrically connected with the liquid injection assembly is fixedly installed at the bottom of the box body.

Description

Technical Field

[0001] The invention relates to the technical field of cable installation, and in particular to a multi-purpose optoelectronic integrated optical fiber composite power cable distribution box. Background Art

[0002] Cable junction boxes are divided into two categories according to their electrical structure: one category does not contain any switchgear, and the box only contains accessories for processing and connecting the cable ends. It has a relatively simple structure, a small size, and a single function. It can be called an ordinary junction box; the other category is that the box not only has the accessories of an ordinary junction box, but also contains one or more switchgear. It has a more complex structure, a larger size, many connecting devices, and is difficult to manufacture with high cost. It can be called an advanced junction box.

[0003] The main function of the cable distribution box is to branch or transfer cables. Having multiple small cables on a long line often results in a waste of cables. Therefore, when the cables are connected to the power load, a large trunk cable is often used. When the cables are close to the load, a cable distribution box is used to divide the trunk cable into several small cables, which are then connected to the load. This wiring method is widely used in scenarios such as street lamp power supply and small user power supply in urban power grids.

[0004] The existing cable junction box has an inlet at the bottom for the trunk cable to enter the junction box, and a large number of air holes are also set at the bottom to facilitate heat dissipation. When it rains, the air curtains set at the air holes on the side of the junction box can prevent rainwater from entering the junction box, but the air holes at the bottom of the junction box cannot be blocked. When the water level rises high, rainwater can enter the junction box through the air holes and the inlet, posing a safety hazard.

[0005] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention

[0006] The purpose of the present invention is to design a box in which the air holes and the line inlet will automatically form a seal when the water level rises to a higher level, thereby preventing rainwater from entering the junction box through the air holes and the line inlet, so as to solve the above-mentioned shortcomings in the technology.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-purpose optoelectronic integrated optical fiber composite power cable distribution box, comprising a box body, and an inlet and an air hole opened at the bottom of the box body, a mounting ring is fixedly installed on the top of the inlet, a deformable annular air bag is installed in the mounting ring, a mounting frame located directly above the air hole is fixedly installed in the box body, a receiving cavity is provided at the bottom of the mounting frame, a sealing member matching the air hole is slidably installed in the receiving cavity, a liquid guide tube is fixedly installed between the receiving cavity and the annular air bag, a liquid injection assembly is also fixedly installed in the box body, a liquid injection tube is fixedly installed between the output end of the liquid injection assembly and the receiving cavity, and a liquid level sensor electrically connected to the liquid injection assembly is fixedly installed at the bottom of the box body; The optical fiber cable is installed in the box through the line inlet and the installation ring. Liquid is injected into the annular airbag and the accommodating cavity through the liquid injection component, so that the sealing member is inserted into the air hole and the annular airbag is expanded. The expanded annular airbag contacts the installation ring and the surface of the optical fiber cable to seal the line inlet and the air hole.

[0008] Preferably, the mounting ring includes an annular column fixedly mounted on the top of the line inlet, and a receiving groove formed on the inner circumference of the annular column, the annular airbag is mounted in the receiving groove, and the inner diameter of the annular column is the same as the diameter of the line inlet.

[0009] Preferably, one side of the outer wall of the annular airbag is fixedly connected to the inner wall of the accommodating groove. When the annular airbag is not inflated, the inner diameter of the annular airbag is larger than the diameter of the cable inlet. When the annular airbag is inflated, the outer wall of the annular airbag respectively fits the inner wall of the accommodating groove and the outer wall of the optical fiber cable.

[0010] Preferably, the number of the air holes is set to multiple groups, each group has a plurality of equidistantly distributed air holes, the number of the mounting frames is the same as the number of groups of air holes, and the sealing member includes a sliding rod vertically slidably connected to the accommodating cavity, and a plurality of rubber strips fixedly installed at the bottom of the sliding rod and interference fit with the air holes.

[0011] Preferably, the top and bottom of the air hole are both rounded, and the bottom of the rubber strip is rounded all around.

[0012] Preferably, a placement hole is opened on the top of the slide rod, a spring is arranged in the placement hole, and two ends of the spring are respectively fixedly connected to the slide rod and the mounting frame.

[0013] Preferably, the injection assembly includes a hydraulic cylinder fixedly installed in the box body, a piston fixedly installed at the end of the hydraulic cylinder output shaft, and a liquid storage tube slidably connected to the outside of the piston. The liquid storage tube is fixedly connected and communicated with the injection tube, and there is liquid medium in the liquid storage tube.

[0014] Preferably, a hard ring is provided inside the annular airbag, and when the annular airbag is not expanded, the annular airbag is attached to the outer wall of the hard ring.

[0015] In the above technical solution, the technical effects and advantages provided by the present invention are: After the liquid level sensor of the present invention detects that the water level reaches the height required for sealing, the liquid injection device will be automatically started to inject the liquid medium into the annular airbag and the accommodating cavity, thereby controlling the sealing member and the air hole to perform interference fit sealing, so that the annular airbag expands and fits tightly with the surface of the cable passing through the inlet, thereby sealing the inlet and the air hole, preventing rainwater from entering the box body and causing safety hazards; The present invention can also start the hydraulic cylinder to inject part of the liquid medium into the annular airbag after the cable passes through the cable inlet and the installation ring is installed in the box, so that the annular airbag expands and squeezes the cable, thereby clamping and fixing the cable to prevent it from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A perspective view of the present invention; Figure 3 It is a schematic diagram of the internal structure of the box of the present invention; Figure 4 It is a schematic diagram of the connection between the mounting ring and the mounting frame of the present invention; Figure 5 It is a schematic diagram of the connection between the liquid injection assembly and the liquid injection tube of the present invention; Figure 6 It is a schematic diagram of the internal structure of the mounting frame of the present invention; Figure 7 It is a schematic diagram of the internal structure of the mounting ring of the present invention.

[0018] Description of reference numerals: 1. Box body; 2. Wire inlet; 3. Air hole; 4. Mounting ring; 4a. Annular column; 4b. Receiving groove; 5. Annular airbag; 6. Mounting frame; 7. Receiving chamber; 8. Seal; 8a. Sliding rod; 8b. Rubber strip; 9. Liquid guide tube; 10. Liquid injection assembly; 10a. Hydraulic cylinder; 10b. Piston; 10c. Liquid storage tube; 11. Liquid injection tube; 12. Liquid level sensor; 13. Placement hole; 14. Spring; 15. Hard ring. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] The present invention provides Figure 1-7 A multi-purpose optoelectronic integrated optical fiber composite power cable distribution box is shown, Figure 1-3 , including a box body 1, and a line inlet 2 and air holes 3 opened at the bottom of the box body 1, the number of air holes 3 is set to multiple groups, each group has multiple air holes 3 distributed equidistantly, and a mounting ring 4 is fixedly installed on the top of the line inlet 2, such as Figure 7 As shown, the mounting ring 4 includes an annular column 4a fixedly mounted on the top of the line inlet 2, and a receiving groove 4b provided on the inner circumference of the annular column 4a, a deformable annular airbag 5 is installed in the receiving groove 4b, one side of the outer wall of the annular airbag 5 is fixedly connected to the inner wall of the receiving groove 4b, a hard ring 15 is installed in the annular airbag 5, when the annular airbag 5 is not expanded, the inner diameter of the annular airbag 5 is larger than the diameter of the line inlet 2, and the annular airbag 5 is attached to the outer wall of the hard ring 15, when the annular airbag 5 is expanded, the outer wall of the annular airbag 5 is respectively in contact with the inner wall of the receiving groove 4b and the outer wall of the optical fiber cable, and the box body 1 A mounting frame 6 is fixedly installed inside and located just above the air hole 3. The number of the mounting frames 6 is the same as the number of groups of the air holes 3. The bottom of the mounting frame 6 has a receiving cavity 7. A sealing member 8 matching the air hole 3 is slidably installed in the receiving cavity 7. The sealing member 8 includes a slide bar 8a vertically slidably connected to the receiving cavity 7, and a plurality of rubber strips 8b fixedly installed at the bottom of the slide bar 8a and interference-fitted with the air hole 3. The top and bottom of the air hole 3 are both rounded, and the bottom of the rubber strip 8b is rounded around. A liquid guide tube 9 is fixedly installed between the receiving cavity 7 and the annular airbag 5. A liquid injection component 10 is also fixedly installed in the box body 1. Figure 6As shown, the injection assembly 10 includes a hydraulic cylinder 10a fixedly installed in the housing 1, a piston 10b fixedly installed at the end of the output shaft of the hydraulic cylinder 10a, and a liquid storage tube 10c slidably connected to the outside of the piston 10b. The liquid storage tube 10c is fixedly connected and communicated with the injection tube 11, and the liquid storage tube 10c contains a liquid medium. The injection tube 11 is fixedly installed between the output end of the injection assembly 10 and the accommodating chamber 7. A liquid level sensor 12 electrically connected to the injection assembly 10 is fixedly installed at the bottom of the housing 1. A placement hole 13 is opened on the top of the slide bar 8a, and a spring 14 is arranged in the placement hole 13. The two ends of the spring 14 are fixedly connected to the slide bar 8a and the mounting bracket 6 respectively. The elastic force of the spring 14 is greater than the elastic force of the annular airbag 5 when it returns to its original state. This makes the liquid in the injection tube 11 preferentially squeezed into the annular airbag 5 when it enters the slide bar 8a. Only after the annular airbag 5 expands to a certain size, the slide bar 8a will gradually slide down in the accommodating chamber 7. The optical fiber composite power cable passes through the inlet 2 at the bottom of the box body 1, and passes through the mounting ring 4 and the annular air bag 5, and then is installed in the junction box. When the water level rises, the liquid level sensor 12 detects whether the water level has reached the height required to close the inlet 2 and the air hole 3. If it has reached the height, the hydraulic cylinder 10a is started, and the output shaft of the hydraulic cylinder 10a extends to drive the piston 10b to press the liquid medium in the liquid storage tube 10c into the injection tube 11, and then enters the accommodating cavity 7 at the bottom of the mounting frame 6, thereby pressing the slide bar 8a downward, and the slide bar 8a will drive the rubber strip 8b to insert into the corresponding air hole 3. Because the top and bottom of the air hole 3 have rounded corners, and the bottom of the rubber strip 8b also has rounded corners, when the rubber strip 8b is pressed into the air hole 3, although it has an interference fit with the air hole 3 to achieve sealing, it will not be scratched. When the slide bar 8a contacts the bottom surface of the inner cavity of the box body 1, the rubber strip 8b is completely inserted into the air hole 3 and will not continue to decline; When the liquid medium enters the accommodating chamber 7, it will first enter the annular airbag 5 through the liquid guide tube 9, and then the slide bar 8a will be completely pressed down. When the annular airbag 5 is filled with the liquid medium, it will deform and expand, so that the annular airbag 5 is no longer attached to the outer wall of the hard ring 15, but gradually fits with the inner wall of the accommodating groove 4b and the outer wall of the optical fiber cable. Because of the shape of the accommodating groove 4b in the annular column 4a, the annular airbag 5 will expand and deform in the direction of the central axis of the accommodating groove 4b after being filled in the accommodating groove 4b, thereby clamping the outer surface of the optical fiber cable. At this time, when the water level rises and overflows the line inlet 2 and the air hole 3, it cannot enter the box body 1 through the line inlet 2 and the air hole 3, avoiding the hidden danger of rainwater entering the junction box; We set the elastic force of the spring 14 to be greater than the elastic force when the annular airbag 5 returns to its original state. At this time, after the liquid medium enters the accommodating chamber 7, it will be squeezed into the liquid guide tube 9 and enter the annular airbag 5. After the annular airbag 5 expands and deforms, it will gradually accumulate in the accommodating chamber 7. Therefore, after passing the cable through the inlet 2 and the mounting ring 4, we can first squeeze a part of the liquid medium into the annular airbag 5 to seal the inlet 2, clamp the cable and fix it to prevent it from loosening.

[0022] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are exemplary only. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application.

Claims

1. A multi-purpose optoelectronic integrated optical fiber composite power cable distribution box, comprising a box body (1), and a line inlet (2) and an air hole (3) opened at the bottom of the box body (1), characterized in that: A mounting ring (4) is fixedly mounted on the top of the inlet (2), a deformable annular airbag (5) is mounted in the mounting ring (4), a mounting frame (6) located directly above the air hole (3) is fixedly mounted in the box (1), a receiving cavity (7) is provided at the bottom of the mounting frame (6), a sealing member (8) matching the air hole (3) is slidably mounted in the receiving cavity (7), a liquid guide tube (9) is fixedly mounted between the receiving cavity (7) and the annular airbag (5), a liquid injection assembly (10) is also fixedly mounted in the box (1), a liquid injection tube (11) is fixedly mounted between the output end of the liquid injection assembly (10) and the receiving cavity (7), and a liquid level sensor (12) electrically connected to the liquid injection assembly (10) is fixedly mounted at the bottom of the box (1); The optical fiber cable is installed in the box body (1) through the line inlet (2) and the installation ring (4), and liquid is injected into the annular airbag (5) and the accommodating cavity (7) through the liquid injection component (10), so that the sealing member (8) is inserted into the air hole (3) and the annular airbag (5) is expanded at the same time. The expanded annular airbag (5) contacts the installation ring (4) and the surface of the optical fiber cable, thereby sealing the line inlet (2) and the air hole (3).

2. A multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 1, characterized in that: The mounting ring (4) comprises an annular column (4a) fixedly mounted on the top of the cable inlet (2), and a receiving groove (4b) provided on the inner circumference of the annular column (4a); the annular airbag (5) is mounted in the receiving groove (4b); and the inner diameter of the annular column (4a) is the same as the diameter of the cable inlet (2).

3. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 2, characterized in that: One side of the outer wall of the annular airbag (5) is fixedly connected to the inner wall of the containing groove (4b); when the annular airbag (5) is not expanded, the inner diameter of the annular airbag (5) is larger than the diameter of the cable inlet (2); when the annular airbag (5) is expanded, the outer wall of the annular airbag (5) is respectively in contact with the inner wall of the containing groove (4b) and the outer wall of the optical fiber cable.

4. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 3, characterized in that: The number of the air holes (3) is arranged to be a plurality of groups, each group having a plurality of air holes (3) distributed at equal intervals, the number of the mounting frames (6) is the same as the number of the groups of air holes (3), and the sealing member (8) comprises a sliding rod (8a) vertically slidably connected to the accommodating cavity (7), and a plurality of rubber strips (8b) fixedly mounted at the bottom of the sliding rod (8a) and having an interference fit with the air holes (3).

5. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 4, characterized in that: The top and bottom of the air hole (3) are both rounded, and the bottom of the rubber strip (8b) is rounded all around.

6. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 4, characterized in that: The top of the slide bar (8a) is provided with a placement hole (13), and a spring (14) is disposed in the placement hole (13). The two ends of the spring (14) are respectively fixedly connected to the slide bar (8a) and the mounting frame (6), and the elastic force of the spring (14) is greater than the elastic force of the annular airbag (5) when it returns to its original state.

7. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 1, characterized in that: The liquid injection assembly (10) comprises a hydraulic cylinder (10a) fixedly mounted in a housing (1), a piston (10b) fixedly mounted at the end of an output shaft of the hydraulic cylinder (10a), and a liquid storage tube (10c) slidably connected to the outside of the piston (10b); the liquid storage tube (10c) is fixedly connected to and communicates with the liquid injection tube (11); and the liquid storage tube (10c) contains a liquid medium.

8. The multi-purpose optoelectronic integrated optical fiber composite power cable distribution box according to claim 1, characterized in that: The annular airbag (5) has a hard ring (15) inside. When the annular airbag (5) is not expanded, the annular airbag (5) is attached to the outer wall of the hard ring (15).

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