A buried pipe optical cable laying counterweight guide head device
By using a counterweight guide device for laying optical cables in underground pipelines, and utilizing auger drill bits and high-pressure water flow to clear silt, the efficient laying and dredging of optical cables in complex underground pipelines is achieved, solving the problems of low laying efficiency and poor monitoring accuracy in existing technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN CONSTRUCT ENG QUALITY TESTING CENT
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-29
AI Technical Summary
Existing technologies cannot smoothly lay optical cables in complex underground pipeline environments, and cannot simultaneously complete dredging operations, resulting in low efficiency in optical cable deployment and affecting monitoring accuracy.
Design a counterweight guide head device for laying optical cables in underground pipelines, including a spiral drill bit, a counterweight guide head, a high-pressure water chamber, a support connecting pipe and a fixing clamp. It uses high-pressure water flow to clear silt and lay optical cables simultaneously, realizing silt removal and optical cable laying without manual entry into the well.
It improves the efficiency and safety of optical cable laying, ensures the smooth laying of optical cables in complex pipeline environments, and simultaneously clears silt, improving the internal environment of pipelines and enhancing the accuracy of monitoring and construction efficiency.
Smart Images
Figure CN224303906U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical cable laying in underground pipelines, and in particular to a counterweight guide device for optical cable laying in underground pipelines. Background Technology
[0002] With the acceleration of urbanization, underground pipelines are playing an increasingly important role in urban infrastructure. However, due to long-term use, many cities' underground pipeline systems have experienced aging and corrosion problems, leading to frequent malfunctions such as pipeline ruptures and leaks. To ensure the safe operation of urban infrastructure, underground pipeline structural health monitoring technology has emerged. Distributed fiber optic monitoring technology, with its unique advantages such as corrosion resistance, real-time monitoring, and anti-interference, has become one of the important means of underground pipeline monitoring. However, in actual distributed fiber optic pipeline monitoring projects, the deployment of optical cables faces many technical challenges.
[0003] On the one hand, the internal environment of existing underground pipelines is complex, with problems such as siltation and sewage flow, making it difficult to lay optical cables smoothly. While some research has addressed the issue of optical cable laying inside pipelines, existing results still have limitations. For example, CN222145285U discloses an optical cable laying mechanism for use inside pipelines, which lays the cable by setting extension rods and limiting components between supports. However, this mechanism cannot adapt to the complex internal environment of pipelines and cannot perform dredging operations, making it difficult to meet practical application needs.
[0004] On the other hand, severe siltation can obstruct the passage of electric vehicles used for fiber optic cable installation, making mechanized laying methods impossible. Publication number CN118655671B discloses an electric vehicle for fiber optic cable laying in ducts, which allows workers to perform multi-directional construction inside the duct by controlling the rotation and angle adjustment of an arc-shaped plate. However, this method cannot pass through ducts with severe siltation and cannot meet the practical application needs in complex pipeline environments.
[0005] Furthermore, for existing underground pipelines, space constraints prevent manual entry for fiber optic cable laying, rendering manual pasting methods ineffective. Publication number CN119493226A discloses a flexible flat fiber optic cable for pipeline monitoring and its laying method, which uses an adhesive layer to fix the cable to the pipeline wall. However, this method relies on manual operation, is inefficient, and is not suitable for existing underground pipelines.
[0006] More importantly, existing fiber optic cable laying methods cannot simultaneously complete the internal dredging of the pipeline during the laying process, and excessive siltation will seriously affect the accuracy of subsequent monitoring. Publication number CN103926670B discloses a method for laying fiber optic cables for detecting leaks in submarine pipelines, which uses glue and binding tape to fix the fiber optic cable. However, this method is also unable to adapt to the complex environment of existing buried pipelines and cannot solve the problem of internal siltation of the pipeline during the fiber optic cable laying process. Utility Model Content
[0007] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a counterweight guide head device for laying optical cables in underground pipelines, which can adapt to complex pipeline environments, complete dredging operations simultaneously, and lay optical cables without the need for manual entry into the well.
[0008] To solve the above-mentioned technical problems, this utility model provides a counterweight guide device for laying optical cables in underground pipelines, comprising:
[0009] Spiral drill bits are used to clear blockages and obstructions inside pipes.
[0010] The counterweight guide head has a cavity inside, and a motor is installed inside the cavity to provide power to the spiral drill bit.
[0011] A high-pressure water chamber, connected to the counterweight guide head, is used to store water and generate water pressure; the high-pressure water chamber has several high-pressure water holes on the side away from the counterweight guide head.
[0012] A support connecting pipe, one end of which is connected to the high-pressure water chamber and the other end of which is connected to the high-pressure water pipe, is used to transport water from the ground to the high-pressure water chamber.
[0013] A fixing clamp is provided on the outside of the supporting connecting pipe, and the fixing clamp is provided with at least two optical cable holes for fixing the optical cable;
[0014] In one embodiment of this utility model, the counterweight guide head is a conical sealing structure.
[0015] In one embodiment of this utility model, the bottom of the high-pressure water chamber is provided with auxiliary wheels.
[0016] In one embodiment of this utility model, the high-pressure water hole includes an inner ring water spray hole and an outer ring water spray hole, wherein the outer ring water spray hole is disposed outside the inner ring water spray hole.
[0017] In one embodiment of this utility model, the spray direction of the inner ring water spray hole is horizontal, and the spray direction of the outer ring water spray hole is set at an angle to the horizontal direction. The inner ring water spray hole includes 5 spray holes, which are used to spray high-pressure water into the inner wall of the pipe, generating a reaction force of water flow to propel the guide head forward and flush the silt on the inner wall of the pipe, thereby achieving the sludge removal function; the outer ring water spray hole includes 6 spray holes, which work in conjunction with the inner ring water spray hole to further enhance the reaction force of the water flow and the sludge removal effect.
[0018] In one embodiment of this utility model, the fixing clamps include multiple clamps, which are arranged side by side on the outside of the supporting connecting tube.
[0019] In one embodiment of this utility model, the fixing clamp is a ring structure, the through hole in the middle of the ring structure is adapted to the size of the supporting connecting pipe, and a plurality of first fixing holes are provided around the ring structure.
[0020] In one embodiment of this utility model, a plurality of second fixing holes are provided on the outer side wall of the supporting connecting tube, and the through screw passes through the first fixing hole and the second fixing hole to realize the connection between the fixing clamp and the supporting connecting tube.
[0021] In one embodiment of this utility model, the supporting connecting pipe is a metal connecting pipe, and the metal connecting pipe is welded and fixed to the high-pressure water chamber.
[0022] In one embodiment of this utility model, the motor has a built-in battery for supplying power to the motor.
[0023] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:
[0024] This utility model describes a counterweight guide device for laying optical cables in underground pipelines. The auger drill bit and fixing clamp are propelled forward within the underground pipeline by the reaction force of the high-pressure water jet from the high-pressure water chamber. The auger drill bit effectively clears the silt inside the pipeline, allowing the cable on the fixing clamp to move smoothly within the pipeline. This enables the laying of optical cables within existing underground pipelines without requiring manual downhole work or the erection of support frames. It overcomes the technical challenges of complex internal pipeline environments, high fluid resistance, and friction during underground pipeline laying, significantly improving the efficiency and safety of optical cable laying. Furthermore, the high-pressure water jet from the high-pressure water chamber clears silt from the pipeline, significantly improving the internal environment. Attached Figure Description
[0025] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0026] Figure 1 This is a schematic diagram of the structure of the counterweight guide head device for laying optical cables in underground pipelines in a preferred embodiment of this utility model;
[0027] Figure 2 This is a schematic diagram of the layout of the high-pressure water hole of this utility model;
[0028] Figure 3 This is a schematic diagram of the structure of the support connecting pipe of this utility model;
[0029] Figure 4 Here is a schematic diagram of the fixing clamp of this utility model:
[0030] Figure 4 (a) is a top view of the fixed clamp;
[0031] Figure 4 (b) is a side view of the fixing fixture;
[0032] Figure 5 This is a schematic diagram of the application of this utility model to underground pipelines;
[0033] Explanation of reference numerals in the accompanying drawings: 1. Spiral drill bit; 2. Counterweight guide head; 3. High-pressure water chamber; 4. High-pressure water hole; 5. Support connecting pipe; 6. Fixing clamp; 7. Optical cable; 8. Optical cable grommets; 9. Auxiliary wheel; 10. Screw; 11. Motor; 12. Water source; 13. Optical cable reel; 14. Starting inspection well; 15. Pipeline end inspection well; 16. High-pressure water pipe. Detailed Implementation
[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.
[0035] Reference Figure 1 As shown, this utility model provides a counterweight guide head device for laying optical cables in underground pipelines, comprising:
[0036] Spiral drill bit 1, used to clear silt and obstructions inside pipes;
[0037] The counterweight guide head 2 has a cavity inside, and a motor 11 is installed inside the cavity. The motor 11 provides power to the spiral drill bit 1.
[0038] The high-pressure water chamber 3 is connected to the counterweight guide head 2 and is used to store water and generate water pressure; the high-pressure water chamber 3 is provided with several high-pressure water holes on the side away from the counterweight guide head 2;
[0039] The support connecting pipe 5 is connected at one end to the high-pressure water chamber 3 and at the other end to the high-pressure water pipe 16, and is used to transport the water source 12 on the ground to the high-pressure water chamber 3.
[0040] A fixing clamp 6 is provided on the outside of the supporting connecting pipe 5. The fixing clamp 6 is provided with at least two optical cable serial holes 8 for fixing the optical cable 7.
[0041] The rotation of the auger drill bit 1 can agitate the silt inside the pipeline, loosen it, and allow it to be flushed by the high-pressure water jet from the high-pressure water chamber 3, thereby achieving simultaneous silt removal. This significantly improves the internal environment of the pipeline, provides a smoother channel for optical cable laying, and enables the device to adapt to the complex internal environment of the pipeline, ensuring the smooth progress of construction.
[0042] In this embodiment, the counterweight guide head 2 has a conical sealing structure. This conical sealing structure enhances the stability of the device within the pipeline and reduces jamming caused by unevenness in the pipeline wall or obstructions.
[0043] Preferably, the fixing clamp 6 is provided with two holes for fixing optical cables; two optical cables can be laid at the same time or the same optical cable can be laid in a U-shape at the same time through the fixing clamp.
[0044] Furthermore, the bottom of the high-pressure water chamber 3 is equipped with auxiliary wheels 9. The auxiliary wheels 9 reduce the direct friction between the device and the inner wall of the pipe, reduce fluid resistance, and improve the propulsion efficiency and stability of the device in the pipe.
[0045] like Figure 2 As shown, the high-pressure water nozzle 4 includes an inner ring spray nozzle 41 and an outer ring spray nozzle 42, with the outer ring spray nozzle 42 positioned outside the inner ring spray nozzle 41. This dual design of the inner ring spray nozzle 41 and the outer ring spray nozzle 42 further enhances the reaction force of the high-pressure water flow and the dredging effect. The different layouts of the inner ring spray nozzle 41 and the outer ring spray nozzle 42 optimize the direction and distribution of the water flow, thereby improving the dredging efficiency.
[0046] In this embodiment, the water spray direction of the inner ring spray hole 41 is horizontal, and the water spray direction of the outer ring spray hole 42 is set at an angle to the horizontal direction. The combination of the horizontal water spray direction of the inner ring spray hole and the inclined water spray direction of the outer ring spray hole can more accurately clean the silt on the inner wall of the pipe and improve the sludge removal effect.
[0047] The inner ring water spray hole 41 includes 5 spray holes, which are used to spray high-pressure water into the inner wall of the pipe, generating a reaction force of water flow to propel the guide head forward and flush the silt on the inner wall of the pipe, thereby achieving the sludge removal function; the outer ring water spray hole 42 includes 6 spray holes, which work in conjunction with the inner ring water spray hole 41 to further enhance the reaction force of the water flow and the sludge removal effect.
[0048] In this embodiment, the fixing clamps 6 include 3 units, which are arranged side by side on the outside of the supporting connecting pipe 5.
[0049] like Figure 3 As shown, the fixing clamp 6 is a ring-shaped structure. The through hole 61 in the middle of the ring-shaped structure is adapted to the size of the supporting connecting pipe 5. Several first fixing holes 62 are provided around the ring-shaped structure. The ring-shaped fixing clamp design ensures a tight fit with the supporting connecting pipe 5 and enhances the structural stability of the device.
[0050] like Figure 4 As shown, the outer wall of the supporting connecting pipe 5 is provided with several second fixing holes 51. The screw 10 passes through the first fixing hole 62 and the second fixing hole 51 to connect the fixing clamp 6 to the supporting connecting pipe 5. With the cooperation of the first fixing hole 62 and the second fixing hole 51, the installation and disassembly of the fixing clamp 6 are more convenient, improving construction efficiency.
[0051] In this embodiment, the supporting connecting pipe 5 is a metal connecting pipe, which is welded and fixed to the high-pressure water chamber 3.
[0052] In this embodiment, the motor 11 has a built-in battery for powering it. This built-in battery design ensures the device can operate independently without an external power source, improving its portability and applicability.
[0053] like Figure 5 As shown, the above structure needs to work together with an external water source 12 and a high-pressure water pump to enable the optical cable 7 to be laid in the underground pipeline while effectively cleaning the silt inside the pipeline, providing accuracy assurance for subsequent pipeline monitoring.
[0054] In practical use, the supporting connecting pipe 5 is connected to the water source 12 via the high-pressure water pipe 16: Before lowering it into the underground pipeline, the optical cable 7 on the optical cable reel 13 is passed through the fixing clamp 6 and knotted at the end, and the fixing clamp 6 is fixed to the supporting connecting pipe 5. Steel wire rope can be used for reinforcement if necessary. Then, one end of the high-pressure water pipe 16 is fixedly connected to the supporting connecting pipe 5 via its own connecting component, and the other end is connected to the high-pressure water pump, completing the water supply system setup.
[0055] Lowering and dredging operations: Select the starting inspection well 14 above the existing pipeline as the lowering point, and vertically lower the entire device to the bottom of the pipeline, so that the auxiliary wheel 9 is in horizontal contact with the bottom of the pipeline, and start the high-pressure water supply system. After water supply, the entire device is propelled forward by the reaction force generated by the water flow in the high-pressure water chamber 3, while the high-pressure water flow is used to flush out the silt in the pipeline, thus achieving dredging.
[0056] Fiber optic cable 7 crossing and water pipe retrieval: Once the entire device has passed through the entire pipeline, the fiber optic cable laying is completed. Cable 7 is disconnected at the inspection well 15 at the end of the pipeline, and simultaneously the high-pressure water pipe 16 is removed and pulled back. This process can be repeated depending on the length of the water pipe and fiber optic cable 7 to achieve long-distance pipeline laying.
[0057] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A counterweight guide device for laying optical cables in underground pipelines, characterized in that, include: Spiral drill bits are used to clear blockages and obstructions inside pipes. The counterweight guide head has a cavity inside, and a motor is installed inside the cavity to provide power to the spiral drill bit. A high-pressure water chamber, connected to the counterweight guide head, is used to store water and generate water pressure; the high-pressure water chamber has several high-pressure water holes on the side away from the counterweight guide head; A support connecting pipe, one end of which is connected to the high-pressure water chamber and the other end of which is connected to the high-pressure water pipe, is used to transport water from the ground to the high-pressure water chamber. A fixing clamp is provided on the outside of the supporting connecting pipe, and the fixing clamp is provided with at least two optical cable holes for fixing the optical cable.
2. The counterweight guide head device for laying underground optical cables in pipelines according to claim 1, characterized in that, The counterweight guide head has a conical sealing structure.
3. The counterweight guide head device for laying underground optical cables in pipelines according to claim 1, characterized in that, The bottom of the high-pressure water chamber is equipped with auxiliary wheels.
4. The counterweight guide head device for laying underground optical cables in pipelines according to claim 1, characterized in that, The high-pressure water hole includes an inner ring water spray hole and an outer ring water spray hole; the outer ring water spray hole is located outside the inner ring water spray hole.
5. A counterweight guide head device for laying underground optical cables in pipelines according to claim 4, characterized in that, The water spray direction of the inner ring spray hole is horizontal, and the water spray direction of the outer ring spray hole is set at an angle to the horizontal direction.
6. The counterweight guide head device for laying underground optical cables in pipelines according to claim 1, characterized in that, The fixing clamps include multiple clamps, which are arranged side by side on the outside of the supporting connecting pipe.
7. The counterweight guide head device for laying underground optical cables in pipelines according to claim 1, characterized in that, The fixing clamp is a ring-shaped structure, and the through hole in the middle of the ring structure is adapted to the size of the supporting connecting pipe. Several first fixing holes are provided around the ring structure.
8. A counterweight guide head device for laying underground optical cables in pipelines according to claim 7, characterized in that, The outer wall of the support connecting tube is provided with several second fixing holes. Through screws pass through the first fixing holes and the second fixing holes to connect the fixing clamp to the support connecting tube.
9. A counterweight guide head device for laying underground optical cables in pipelines according to claim 8, characterized in that, The supporting connecting pipe is a metal connecting pipe, which is welded and fixed to the high-pressure water chamber.
10. A counterweight guide head device for laying underground optical cables in pipelines according to claim 1, characterized in that, The motor has a built-in battery for powering it.