A cable conduit sealing device

Abstract

The application discloses a cable pipeline sealing device and relates to the technical field of cable installation aids.The application comprises a pipeline body, the inside of the pipeline body is provided with a sealing cylinder, and the inside of the sealing cylinder is provided with a sealing mechanism; the sealing mechanism comprises a fixing disc arranged in the sealing cylinder, one side of the fixing disc is provided with a buffer disc, the inside of the sealing cylinder is provided with a fixing pipe, and the fixing pipe is fixedly connected with the inner wall of the fixing disc; the sealing mechanism can be arranged in the pipeline; the temperature in the pipeline rises due to cable work; when the gas in the pipeline expands due to heat, the expanded gas is buffered to a certain extent, the single pressure is prevented from being too large, the pipeline is prevented from being impacted, the sealing opening is prevented from being damaged, the sealing disc can be attached to the sealing opening on the outside when the expanded gas pushes the sealing disc to move, heat absorption and temperature reduction are achieved, and the expanded gas in the pipeline is relieved.

Description

Technical Field

[0001] This invention relates to the field of cable installation auxiliary equipment technology, and specifically to a cable duct sealing device. Background Technology

[0002] With the continuous development of my country's economy and the gradual improvement of urban infrastructure, higher standards and requirements have been placed on the construction quality and maintenance efficiency of underground pipelines. Previously, underground communication and power protection pipes were mostly made of materials such as plastic, fiberglass, and cement, and were pre-buried in pre-dug underground trenches. Manholes were installed at standard intervals as work points for wiring, inspection, emergency repairs, and maintenance. The main body of the manholes was constructed of bricks and cement, and each manhole was connected by pre-buried pipes.

[0003] Patent application (CN202010927072.6) discloses a mechanical cable duct sealing device, comprising a stabilizing mechanism, a duct mechanism, and a sealing mechanism. The stabilizing mechanism has a duct mechanism located at its center front. The inner perimeter of the duct mechanism is connected to the sealing mechanism. The stabilizing mechanism consists of bolt holes, a lower fastening bolt, an upper fastening bolt, a lower fastening bolt component, an upper fastening bolt component, a lower fastening nut, and an upper fastening nut. This mechanical cable duct sealing device, through a blocking device within the duct mechanism, completely cuts off the leakage channel, either by blocking or isolating the leakage medium channel, or by increasing the fluid flow resistance in the leakage medium channel, thus forming a closed space to prevent fluid leakage. Furthermore, a rotating device rotatably connected to the inner side of the blocking device allows for easy removal or insertion into the duct mechanism requiring blocking, via a handle fixedly installed on the inner side of the rotating device.

[0004] The patent and existing technologies have the following technical problems in practical use: Because cables operate within conduits for extended periods, their own temperature rises during operation, which in turn raises the temperature inside the conduit. This causes gas to expand outwards. Most cables use sealant to seal the conduit openings. When the expanding gas expands outwards, it can cause pressure on the sealant, creating gaps and leading to seal failure. Summary of the Invention

[0005] The purpose of this invention is to provide a cable duct sealing device to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: A cable duct sealing device includes a duct body, a sealing cylinder is disposed inside the duct body, and a sealing mechanism is disposed inside the sealing cylinder; The sealing mechanism includes a fixed plate disposed inside the sealing cylinder, a buffer plate disposed on one side of the fixed plate, a fixed tube disposed inside the sealing cylinder, the fixed tube being fixedly connected to the inner wall of the fixed plate, a mating cylinder being fixedly installed on the side of the buffer plate near the fixed plate, the inner wall of the mating cylinder having a spiral groove, a mating block being fixedly installed on the surface of the fixed tube, the mating block engaging with the mating cylinder through the spiral groove, a buffer groove being formed on the surface of the buffer plate, a sealing plate disposed on one side of the buffer groove, the sealing plate being fixedly connected to the fixed tube, and at least two sets of buffer plates being provided. The sealing cylinder is equipped with a sealing disc inside. The buffer disc and the sealing disc can move horizontally inside the sealing cylinder. An electromagnet is rotatably installed on one side of the fixed tube, and the electromagnet is fixedly connected to the inner wall of the sealing cylinder.

[0007] Furthermore, a heating coil is fixedly installed on the inner wall of the sealing cylinder, a locking tube is fixedly installed on the side of the sealing disc near the buffer disc, the locking tube is sleeved on the surface of the fixed tube, and a connecting block is fixedly installed on the side of the buffer disc near the sealing disc, the connecting block having a locking groove inside.

[0008] Furthermore, a locking element is rotatably mounted on the surface of the locking tube, and an elastic element is fixedly mounted between the locking element and the locking tube.

[0009] Furthermore, a first sliding cylinder is fixedly installed on the side of the fixed disk near the buffer disk, and a docking cylinder is fixedly installed on the side of the buffer disk near the fixed disk.

[0010] Furthermore, the docking cylinder is slidably connected to the first sliding cylinder, and a second sliding cylinder is fixedly installed on the side of the buffer disk away from the fixed disk, and the docking cylinder is slidably connected to the second sliding cylinder.

[0011] Furthermore, a return spring is fixedly installed on the inner wall of the second sliding cylinder, and one end of the return spring is fixedly connected to the docking cylinder.

[0012] Furthermore, a sealing airbag is fixedly installed on one side of the sealing disc, and several air inlets communicating with the sealing airbag are opened on the surface of the sealing disc.

[0013] Furthermore, a humidity detector is fixedly installed on the inner wall of the sealing cylinder, and the humidity detector is electrically connected to an electromagnet and a heating coil.

[0014] Furthermore, the sealing plate is arranged in a ring with at least four sets, and a rubber pad is provided on the side of the sealing plate near the buffer groove.

[0015] The beneficial effects of this invention are as follows: 1. The present invention, through its sealing mechanism, can buffer the gas inside the pipe when the temperature rises due to the operation of the cable and the gas inside the pipe expands due to heat. This prevents excessive pressure from impacting the pipe and causing damage to the seal. At the same time, when the expanding gas pushes the sealing disc to move, the sealing disc can fit with the outer sealing opening, thereby absorbing heat and cooling down, thus alleviating the expansion of the gas inside the pipe.

[0016] 2. In this invention, when the humidity detector detects high humidity inside the pipe, it indicates a leak at the sealing port. At this time, the sealing disc is fixed to the connecting block via the docking cylinder to prevent movement. Simultaneously, the humidity detector controls the heating coil to start, thereby heating the air inside the pipe. The gas inside the pipe expands and moves outward, entering the sealing airbag through the air inlet on the surface of the sealing disc. This causes the sealing airbag to expand and seal the surface of the sealing disc, improving the sealing effect and preventing moisture from entering the pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the pipe body of the present invention; Figure 2 This is a schematic diagram of the sealing cylinder of the present invention; Figure 3 This is a schematic diagram of the first sliding cylinder of the present invention; Figure 4 This is a schematic diagram of the sealing plate of the present invention; Figure 5 This is a schematic diagram of the interior of the sealing cylinder of the present invention; Figure 6 This is the present invention. Figure 5 Schematic diagram at point A in the middle; Figure 7 This is a cross-sectional schematic diagram of the sealing cylinder of the present invention; Figure 8 This is the present invention. Figure 7 Schematic diagram at point B in the middle.

[0018] Reference numerals: 1. Pipe body; 2. Sealing cylinder; 3. Sealing mechanism; 31. Fixed plate; 32. Buffer plate; 33. Fixed pipe; 34. Matching cylinder; 35. Spiral groove; 36. Matching block; 37. Buffer groove; 38. Sealing plate; 39. Sealing disc; 4. Electromagnet; 5. Heating coil; 6. Locking tube; 7. Connecting block; 8. Locking groove; 9. Locking element; 10. Elastic element; 11. First sliding cylinder; 12. Connecting cylinder; 13. Second sliding cylinder; 14. Return spring; 15. Sealing airbag; 16. Air inlet. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] A preferred embodiment of the present invention, a cable duct sealing device, will be described in detail below.

[0021] Example 1, as Figures 1-8 As shown, it includes a pipe body 1, a sealing cylinder 2 is provided inside the pipe body 1, and a sealing mechanism 3 is provided inside the sealing cylinder 2; The sealing mechanism 3 includes a fixed plate 31 disposed inside the sealing cylinder 2, a buffer plate 32 disposed on one side of the fixed plate 31, a fixed tube 33 disposed inside the sealing cylinder 2, the fixed tube 33 being fixedly connected to the inner wall of the fixed plate 31, a mating cylinder 34 being fixedly installed on the side of the buffer plate 32 near the fixed plate 31, a spiral groove 35 being provided on the inner wall of the mating cylinder 34, a mating block 36 being fixedly installed on the surface of the fixed tube 33, the mating block 36 engaging with the mating cylinder 34 through the spiral groove 35, a buffer groove 37 being provided on the surface of the buffer plate 32, a sealing plate 38 being disposed on one side of the buffer groove 37, the sealing plate 38 being fixedly connected to the fixed tube 33, and at least two sets of buffer plates 32 are provided. The sealing cylinder 2 is equipped with a sealing disc 39. The buffer disc 32 and the sealing disc 39 can move horizontally inside the sealing cylinder 2. An electromagnet 4 is rotatably installed on one side of the fixed tube 33. The electromagnet 4 is fixedly connected to the inner wall of the sealing cylinder 2. First, the workers install the sealing cylinder 2 inside the pipe body 1, then insert the cable into the fixing pipe 33. Next, they apply adhesive to the pipe opening, thus installing the sealing cylinder 2 to the pipe body 1. Since the cable generates heat during operation, when the cable temperature inside the pipe body 1 becomes too high, the gas inside the sealed pipe body 1 will expand due to the increased temperature. This expanding gas will then contact the buffer plate 32, pushing it towards the pipe opening. Simultaneously, because the fixing pipe 33 has a mating block 36, the outward movement of the buffer plate 32 will drive the mating cylinder 34 to move synchronously. The threaded groove on the inner wall of the mating cylinder 34 engages with the mating block 36, causing it to rotate as it moves outward. By rotating at a certain angle, the sealing plate 38 is separated from the buffer groove 37 on the surface of the buffer plate 32, thereby pushing the next set of buffer plates 32 to move, thus buffering the expanding gas until the expanding gas contacts the sealing plate 39 and pushes the sealing plate 39 outward to contact the inner wall of the sealing cylinder 2 near the sealing port. Since the sealing port is located on one side of the pipe opening, when the sealing plate 39 contacts it, the inner wall of the sealing cylinder 2 can absorb heat to a certain extent, thereby cooling the expanding gas. When the sealing port leaks, the impact force of the water flow or air flow will push the sealing plate 39 inward. At this time, the electromagnet 4 will automatically close. When the sealing plate 39 moves, it will drive the fixed pipe 33 to move synchronously, thereby preventing the sealing plate 39 and the buffer plate 32 from rotating, thus improving the sealing effect. The sealing mechanism 3, when installed inside the pipe, can buffer the expansion of gas caused by the temperature rise due to the operation of the cable. This prevents excessive pressure from impacting the pipe and damaging the seal. At the same time, when the expansion gas pushes the sealing disc 39 to move, the sealing disc 39 can fit against the outer seal, thereby absorbing heat and cooling down, thus alleviating the expansion of gas inside the pipe.

[0022] Example 2, as Figures 1-8 As shown, a heating coil 5 is fixedly installed on the inner wall of the sealing cylinder 2, a locking tube 6 is fixedly installed on the side of the sealing disc 39 near the buffer disc 32, the locking tube 6 is sleeved on the surface of the fixed tube 33, a connecting block 7 is fixedly installed on the side of the buffer disc 32 near the sealing disc 39, a locking groove 8 is opened inside the connecting block 7, a locking element 9 is rotatably installed on the surface of the locking tube 6, and an elastic element 10 is fixedly installed between the locking element 9 and the locking tube 6. When a leak occurs at the sealing port, external gas or water flow will impact the sealing disc 39. When the sealing disc 39 receives the impact force, it will move inward. At the same time, it will drive the locking tube 6 to move towards the connecting block 7. Meanwhile, the locking member 9, in cooperation with the locking groove 8, will engage with the connecting block 7, thereby preventing the sealing disc 39 from moving. This can fix the sealing disc 39 when a leak occurs at the sealing port, preventing it from leaking when it is impacted and moved.

[0023] Example 3, as Figures 1-7 As shown, a first sliding cylinder 11 is fixedly installed on the side of the fixed disk 31 near the buffer disk 32, a docking cylinder 12 is fixedly installed on the side of the buffer disk 32 near the fixed disk 31, the docking cylinder 12 is slidably connected to the first sliding cylinder 11, a second sliding cylinder 13 is fixedly installed on the side of the buffer disk 32 away from the fixed disk 31, the docking cylinder 12 is slidably connected to the second sliding cylinder 13, and a return spring 14 is fixedly installed on the inner wall of the second sliding cylinder 13, one end of the return spring 14 is fixedly connected to the docking cylinder 12; When the buffer disc 32 and the sealing disc 39 are moved by the impact force, the first sliding cylinder 11 and the second sliding cylinder 13 can slide inside the docking cylinder 12 connected to them respectively. While sliding, the return spring 14 is stretched or squeezed. When the thrust is lost, the return spring 14 can be reset due to the elastic potential energy.

[0024] Example 4, as Figures 1-7 As shown, a sealing airbag 15 is fixedly installed on one side of the sealing disc 39. Several air inlets 16 connected to the sealing airbag 15 are opened on the surface of the sealing disc 39. A humidity detector is fixedly installed on the inner wall of the sealing cylinder 2. The humidity detector is electrically connected to the electromagnet 4 and the heating coil 5. When the humidity detector detects high humidity inside the pipe, it indicates a leak at the sealing port. At this time, the sealing disc 39 will be fixed to the connecting block 7 via the docking cylinder 12 to prevent it from moving. Simultaneously, the humidity detector controls the heating coil 5 to start, thereby heating the air inside the pipe. The gas inside the pipe expands and moves outward, entering the sealing airbag 15 through the air inlet 16 on the surface of the sealing disc 39. This causes the sealing airbag 15 to expand and seal the surface of the sealing disc 39, improving the sealing effect and preventing moisture from entering the pipe.

[0025] Example 5, such as Figures 1-8 As shown, at least four sets of sealing plates 38 are arranged in a ring, and a rubber pad is provided on the side of the sealing plate 38 near the buffer groove 37. The rubber gaskets provided improve the sealing effect of the sealing plate 38 on the buffer groove 37.

[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cable duct sealing device, comprising a duct body (1), characterized in that, The pipe body (1) is provided with a sealing cylinder (2) inside, and a sealing mechanism (3) is provided inside the sealing cylinder (2). The sealing mechanism (3) includes a fixed plate (31) disposed inside the sealing cylinder (2), a buffer plate (32) disposed on one side of the fixed plate (31), a fixed tube (33) disposed inside the sealing cylinder (2), the fixed tube (33) being fixedly connected to the inner wall of the fixed plate (31), a mating cylinder (34) being fixedly installed on the side of the buffer plate (32) near the fixed plate (31), a spiral groove (35) being opened on the inner wall of the mating cylinder (34), a mating block (36) being fixedly installed on the surface of the fixed tube (33), the mating block (36) being mated with the mating cylinder (34) through the spiral groove (35), a buffer groove (37) being opened on the surface of the buffer plate (32), a sealing plate (38) being disposed on one side of the buffer groove (37), the sealing plate (38) being fixedly connected to the fixed tube (33), and at least two sets of buffer plates (32) being provided. The sealing cylinder (2) is provided with a sealing disc (39) inside. The buffer disc (32) and the sealing disc (39) can move horizontally inside the sealing cylinder (2). An electromagnet (4) is rotatably installed on one side of the fixed tube (33). The electromagnet (4) is fixedly connected to the inner wall of the sealing cylinder (2). A heating coil (5) is fixedly installed on the inner wall of the sealing cylinder (2). A locking tube (6) is fixedly installed on the side of the sealing disc (39) near the buffer disc (32). The locking tube (6) is sleeved on the surface of the fixed tube (33). A connecting block (7) is fixedly installed on the side of the buffer disc (32) near the sealing disc (39). A locking groove (8) is opened inside the connecting block (7). A locking element (9) is rotatably installed on the surface of the locking tube (6). An elastic element (10) is fixedly installed between the locking element (9) and the locking tube (6).

2. The cable duct sealing device according to claim 1, characterized in that, The first sliding cylinder (11) is fixedly installed on the side of the fixed disk (31) near the buffer disk (32), and the docking cylinder (12) is fixedly installed on the side of the buffer disk (32) near the fixed disk (31).

3. A cable duct sealing device according to claim 2, characterized in that, The docking cylinder (12) is slidably connected to the first sliding cylinder (11), and the second sliding cylinder (13) is fixedly installed on the side of the buffer disk (32) away from the fixed disk (31), and the docking cylinder (12) is slidably connected to the second sliding cylinder (13).

4. A cable duct sealing device according to claim 3, characterized in that, A reset spring (14) is fixedly installed on the inner wall of the second sliding cylinder (13), and one end of the reset spring (14) is fixedly connected to the docking cylinder (12).

5. A cable duct sealing device according to claim 1, characterized in that, A sealing airbag (15) is fixedly installed on one side of the sealing disc (39), and a plurality of air inlets (16) communicating with the sealing airbag (15) are provided on the surface of the sealing disc (39).

6. A cable duct sealing device according to claim 1, characterized in that, A humidity detector is fixedly installed on the inner wall of the sealing cylinder (2), and the humidity detector is electrically connected to the electromagnet (4) and the heating coil (5).

7. A cable duct sealing device according to claim 1, characterized in that, The sealing plate (38) is arranged in a ring with at least four sets, and a rubber pad is provided on the side of the sealing plate (38) near the buffer groove (37).

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