Punching and burying device for submarine cable shoal laying construction
By designing a blasting device for laying seashores in the submarine cable, the spraying components and high-pressure water jet technology of the combination of upper and lower half tiles are used to solve the problem that existing equipment cannot work normally during construction in the shallow area, and efficient blasting of full-routing of seashore cables is achieved, reducing operational risks.
Patent Information
- Application Number
- CN202421157484.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-24
AI Technical Summary
When the existing submarine cable burial equipment is constructed in the shallow area, large ships cannot get close to each other and traditional equipment pump water intakes are affected by moisture, which makes the submarine cable unable to be effectively laid, increasing operational risks.
A blasting and burying device for baffle laying facilities was designed. The blasting component ring with a combination of upper and lower tile is hung outside the submarine cable, and it is sprayed through a high-pressure water nozzle to break the ground to form a cable trench, and it is routed along the coastal cable route through the traction device to achieve the blasting and burying operation of the fully routed submarine cable.
The device can efficiently complete the burial operation of submarine cables in the shallow area, reducing construction time and reducing operational risks. Moreover, due to the small size of the device, the supporting ships are shallow in draft, which is suitable for construction in the intertidal zone.
Smart Images
Figure CN222601876U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of submarine cable laying, in particular to a flushing and burying device for submarine cable shoal laying construction. Background Art
[0002] In recent years, with the continuous development of offshore wind power and marine oil and gas development, submarine cables have been widely used. Submarine communication cables are mainly used for long-distance communication networks, usually between distant islands, cross-sea military facilities and other important occasions. The laying distance of submarine power cables is much shorter than that of communication cables. They are mainly used between land and islands, across rivers or harbors, and connecting offshore booster stations from land. Since submarine cables are laid on the seabed, they are easily damaged by external forces such as fishing operations. Therefore, submarine cable construction requires the cables to be buried to a certain depth below the mud surface to ensure that they will not be damaged by anchor scraping. The existing flushing and burying equipment uses a frame-type rack straddling the submarine cable to install multiple jet flushing pumps. The water pump flushes the soil to form a trench, and the submarine cable falls into the trench due to its own weight. The weight and volume of the equipment require larger ships to release and recover. Because the shallow landing section is affected by the tide, large ships cannot approach. At the same time, due to the installation position of the pump body, the pump intake is affected by the tide and cannot be completely submerged, so it cannot work. The construction of the landing section of the submarine cable is often unable to reach the shore due to the influence of the tide, resulting in sections of the submarine cable that cannot be handled, increasing the risk of submarine cable operation. Even if high tides are used, there are often fewer windows for operation, which seriously affects work efficiency. Utility Model Content
[0003] The utility model aims to provide a flushing and burying device for submarine cable shoal laying construction, which can realize flushing and burying operations on the entire route of the submarine cable and improve the efficiency of trenching and burying.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flushing and burying device for shallow-shoal laying of submarine cables, characterized in that it includes an upper jet flushing component and a lower jet flushing component, the upper jet flushing component includes an upper outer shell, the lower jet flushing component includes a lower outer shell, the upper outer shell is arranged above the lower outer shell, a first cavity is arranged in the upper outer shell, a second cavity is arranged in the lower outer shell, a plurality of through holes are provided on the outer surfaces of the upper outer shell and the lower outer shell, nozzles are fixed on the through holes, a water inlet is provided on the upper outer shell, a high-pressure water interface is fixed on the water inlet, and the water path between the first cavity and the second cavity is connected.
[0005] Furthermore, the upper jet punch assembly also includes an upper half cone sleeve, and the lower jet punch assembly also includes a lower half cone sleeve. The upper half cone sleeve is fixed at the openings at both ends of the upper outer shell, and the lower half cone sleeve is fixed at the openings at both ends of the lower outer shell. An upper inner shell is fixed between the upper half cone sleeves at both ends, upper sealing plates are fixed on both sides of the upper inner shell, and a lower inner shell is fixed between the lower half cone sleeves at both ends. Lower sealing plates are fixed on both sides of the lower inner shell, and the first cavity is formed between the upper half cone sleeve, the upper inner shell and the upper outer shell, and the second cavity is formed between the lower half cone sleeve, the lower inner shell and the lower outer shell, and the upper sealing plate and the lower sealing plate are both provided with long holes that are positioned opposite to each other.
[0006] Furthermore, the upper sealing plate and the lower sealing plate are in the shape of isosceles trapezoids, and the upper inner shell and the lower inner shell are in the shape of hollow semi-cylinders.
[0007] Furthermore, a plurality of relatively positioned embedded openings are provided on both sides of the upper outer shell and the lower outer shell, a connecting seat is provided on the embedded opening, an opening is provided at the bottom of the connecting seat, a bolt is sleeved in the opening, and the upper outer shell and the lower outer shell are locked by bolts and nuts.
[0008] Furthermore, both ends of the outer surface of the upper shell are fixed with lifting ears.
[0009] Beneficial effects of the utility model: The utility model is provided with a spray assembly ring formed by upper and lower half-tiles on the outside of the submarine cable, and the cone hole formed by the upper half cone sleeve and the lower cone sleeve before and after the spray assembly is conducive to the passage of the submarine cable, so that the pulling and flushing device can smoothly move forward and backward along the submarine cable. The high-pressure water input by the upper and lower spray assemblies through the high-pressure water interface is sprayed from radial nozzles, the lower nozzle realizes the breaking of the seabed soil, and the upper nozzle provides a reaction force to prevent the flushing device from rotating around the submarine cable, which can ensure the breaking of the soil. In this way, a cable trench can be quickly formed, and the spraying device of the utility model falls into the trench with the submarine cable. The ship pulls the device and slides along the cable route to realize the flushing and burying operation of the entire route of the submarine cable. At the same time, because the device is small in size, the required supporting ship has a shallow draft, and the water intake of the high-pressure water interface for spraying is above the mud surface and below the water surface, which can cover the flushing and burying operations of all submarine cables in the intertidal zone of the landing section. The device is integrally mounted on the outer ring of the submarine cable, and there is no risk of squeezing or scratching the submarine cable by traditional equipment. The whole device has a simple structure, is easy to install, has low production and construction costs, can effectively prevent damage to the submarine cable during burial construction, and has good construction application value. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the flushing and embedding device in the utility model;
[0011] Figure 2 This is a schematic diagram of the structure of the embedded device in the utility model for fixing the submarine cable;
[0012] Figure 3 A schematic diagram of the structure of the upper jet punch assembly of the device in the utility model;
[0013] Figure 4 A structural schematic diagram of a lower jet punch assembly of the device in the utility model.
[0014] Among them: 1. Submarine cable; 2. Burying device; 21. Lower jetting assembly; 211. Lower outer shell; 212. Lower half cone sleeve; 213. Lower sealing baffle; 214. Lower inner shell; 22. Upper jetting assembly; 221. Upper outer shell; 222. Upper half cone sleeve; 223. Upper sealing baffle; 224. Upper inner shell; 23. Bolts; 24. Nuts; 3. Nozzle; 4. Connecting seat; 5. High-pressure water interface; 6. Lifting ear. DETAILED DESCRIPTION
[0015] The present invention is further described below in conjunction with the accompanying drawings. (For better understanding, the orientation of the present invention is described according to the orientation shown in the accompanying drawings and cannot be understood as limiting the present application; the following terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.)
[0016] See also Figures 1 to 4The utility model provides an embodiment: a flushing and burying device 2 for shallow-shoal laying of submarine cables, characterized in that it includes an upper jet flushing component 22 and a lower jet flushing component 21, the upper jet flushing component 22 includes an upper outer shell 221, the lower jet flushing component 21 includes a lower outer shell 211, the upper outer shell 221 is arranged above the lower outer shell 211, a first cavity is arranged in the upper outer shell 221, a second cavity is arranged in the lower outer shell 211, a plurality of through holes are provided on the outer surfaces of the upper outer shell 221 and the lower outer shell 211, nozzles 3 are fixed on the through holes, a water inlet is provided on the upper outer shell 221, a high-pressure water interface 5 is fixed on the water inlet, and the waterway between the first cavity and the second cavity is connected. The submarine cable 1 is circumferentially fixed between the upper jet punch assembly 22 and the lower jet punch assembly 21. The upper jet punch assembly 22 and the lower jet punch assembly 21 are both welded assemblies with a semi-cylindrical internal cavity and tapered inner holes at both ends. They are manufactured by longitudinally slicing a seamless pipe or rolling a steel plate. The multiple through holes opened in the upper outer shell 221 and the lower outer shell 211 are evenly spaced along the circumferential radial angle. The density of the circumferential arrangement and the number of axial arrangements are determined based on design analysis to meet the requirements for breaking ground when pulling forward. The nozzle 3 is a short section of a circular tube welded on a plurality of through holes, which can realize the ejection of high-pressure water to form a jet and achieve the ground-breaking effect; the high-pressure water interface 5 is formed by welding a seamless pipe and an elbow, and is connected to the high-pressure water pipe of the support ship. During operation, the high-pressure water interface 5 is injected with high-pressure water, and the high-pressure water is injected into the first cavity and the second cavity. The input high-pressure water is ejected from the radial nozzle 3. In this way, a cable trench can be quickly formed, and the submarine cable 1 can be buried by trenching with spraying, so that the spraying device of the utility model falls into the cable trench with the submarine cable 1, and will not be affected by silting, thereby improving the trenching and burying efficiency.
[0017] Please continue reading Figure 1 , Figure 3 , Figure 4As shown, in one embodiment of the utility model, the upper jet punch assembly 22 also includes an upper cone sleeve 222, and the lower jet punch assembly 21 also includes a lower cone sleeve 212. The upper cone sleeve 222 is fixed at the openings at both ends of the upper outer shell 221, and the lower cone sleeve 212 is fixed at the openings at both ends of the lower outer shell 211. An upper inner shell 224 is fixed between the upper cone sleeves 222 at both ends, and an upper baffle plate 223 is fixed on both sides of the upper inner shell 224. A lower inner shell 214 is fixed between the lower cone sleeves 212 at both ends, and a lower baffle plate 213 is fixed on both sides of the lower inner shell 214. The first cavity is formed between the upper cone sleeve 222, the upper inner shell 224 and the upper outer shell 221, and the second cavity is formed between the lower cone sleeve 212, the lower inner shell 214 and the lower outer shell 211. Long holes with opposite positions are provided on the upper baffle plate 223 and the lower baffle plate 213. The upper baffle plate 223, the upper cone sleeve 222 and the upper inner shell 224 are directly matched to form a first cavity, and the lower baffle plate 213, the lower cone sleeve 212 and the lower inner shell 214 are directly matched to form a second cavity. The upper baffle plate 223 and the lower baffle plate 213 are both provided with long holes in opposite positions, which can make the water paths in the first cavity and the second cavity interconnected, so that high-pressure water can flow from the first cavity to the second cavity. The openings of the upper baffle plate 223 and the lower baffle are sealed and treated to prevent water leakage, so as to achieve pressure maintenance in the first cavity and the second cavity, and ensure that the high-pressure water in the first cavity and the second cavity is ejected from the nozzle 3 to form a jet.
[0018] Please continue reading Figure 3 , Figure 4 As shown, in one embodiment of the utility model, the upper sealing plate 223 and the lower sealing plate 213 are in the shape of an isosceles trapezoid, and the upper inner shell 224 and the lower inner shell 214 are in the shape of a hollow semi-cylindrical shape. The semi-cylindrical shape can wrap the submarine cable 1 and fix the submarine cable 1 between the upper jet punch assembly 22 and the lower jet punch assembly 21; the shape of the upper sealing plate 223 can be directly matched with the upper half cone sleeve 222 and the upper inner shell 224 to form a first cavity, and the lower sealing plate 213 is the same.
[0019] Please continue reading Figure 3 , Figure 4As shown, in one embodiment of the utility model, a plurality of oppositely positioned embedded openings are provided on both sides of the upper outer shell 221 and the lower outer shell 211, and a connecting seat 4 is provided on the embedded openings. The bottom of the connecting seat 4 is provided with an opening, and a bolt 23 is sleeved in the opening. The upper outer shell 221 and the lower outer shell 211 are locked by the bolt 23 and the nut 24. The bolt 23 and the nut 24 meet the requirements of corrosion resistance and load, and pass through the opening on the lower outer shell 211 and pass out from the corresponding opening of the upper outer shell 221. The lower jet punch assembly 21 and the upper jet punch assembly 22 are formed into a ring by the bolt 23 and the nut 24, and are wrapped around the outside of the submarine cable 1. The embedded opening and the connecting seat 4 are different according to the internal pressure and the overall length. After reaching a certain length, the number of the connecting seat 4 is increased as needed.
[0020] Please continue reading Figure 1 As shown, in one embodiment of the utility model, both ends of the outer surface of the upper outer shell 221 are fixed with lifting ears 6. The lifting ears 6 are used for tying the ship to pull the device, and can be connected to the winch of the support ship during construction, and the pulling and dragging can meet the movement of the entire device along the cable 1 forward and backward to achieve groundbreaking and burial in different directions.
[0021] The utility model has the following working principle: find the position of the submarine cable that needs to be flushed and buried, place the lower jet flushing assembly under the submarine cable through a crane, and hoist the upper jet flushing assembly to buckle on it. At the same time, the front and rear lifting ears 6 are respectively connected to the support ship or the winch at a fixed position, and the lower jet flushing assembly and the upper jet flushing assembly are connected and fixed by 4 sets of connecting bolt and nut assemblies until the required tightening torque is met. Then the high-pressure water pipe and the high-pressure water interface of the support ship or the support station are connected and assembled. Turn on the high-pressure water so that all nozzles start to spray and break the soil. Then the winch is pulled to make the flushing and burying device move along the submarine cable. Due to the movement, a flushing pit is formed, and the flushing and burying device will fall into the pit with the submarine cable. Through a certain moving speed and a spraying pressure, the trenching depth can reach more than half a meter at a time. At this time, the efficiency will not be weakened because the silted submarine cable falls to the bottom of the trench. After that, the front and back pulling makes the flushing and burying device move back and forth, gradually deepening the trench depth, and finally making the submarine cable reach the required burial depth. Since the submarine cable is wrapped in the flushing and burying device, the jetting and breaking of soil is concentrated at the location where trenching is required, which is efficient and accurate, allowing the burial construction to be completed quickly. After completing the flushing and burying of a submarine cable, the divers dismantle the high-pressure water pipe underwater or at the landing location, loosen the connecting bolt and nut assembly, and successively hoist and recover the upper and lower jet flushing assemblies, flush with fresh water and inspect them, and then continue the flushing and burying of other submarine cables according to the above construction until all the construction is completed.
[0022] The above description is only a preferred embodiment of the present utility model and cannot be understood as a limitation of the present application. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the present utility model.
Claims
1. A flushing and burying device for submarine cable shoal laying, characterized in that: It includes an upper spray assembly and a lower spray assembly, the upper spray assembly includes an upper outer shell, the lower spray assembly includes a lower outer shell, the upper outer shell is arranged above the lower outer shell, a first cavity is arranged in the upper outer shell, a second cavity is arranged in the lower outer shell, a plurality of through holes are provided on the outer surfaces of the upper outer shell and the lower outer shell, nozzles are fixed on the through holes, a water inlet is provided on the upper outer shell, a high-pressure water interface is fixed on the water inlet, and the water path between the first cavity and the second cavity is connected.
2. A flushing and burying device for submarine cable shoal laying construction according to claim 1, characterized in that: The upper jet punch assembly also includes an upper cone sleeve, and the lower jet punch assembly also includes a lower cone sleeve. The upper cone sleeve is fixed at the openings at both ends of the upper outer shell, and the lower cone sleeve is fixed at the openings at both ends of the lower outer shell. An upper inner shell is fixed between the upper cone sleeves at both ends, and upper sealing plates are fixed on both sides of the upper inner shell. A lower inner shell is fixed between the lower cone sleeves at both ends, and a lower sealing plate is fixed on both sides of the lower inner shell. The first cavity is formed between the upper cone sleeve, the upper inner shell and the upper outer shell, and the second cavity is formed between the lower cone sleeve, the lower inner shell and the lower outer shell, and the upper sealing plate and the lower sealing plate are both provided with long holes in opposite positions.
3. A flushing and burying device for submarine cable shoal laying construction according to claim 2, characterized in that: The upper sealing plate and the lower sealing plate are in the shape of isosceles trapezoids, and the upper inner shell and the lower inner shell are in the shape of hollow semi-cylinders.
4. The flushing and burying device for submarine cable shoal laying construction according to claim 1 is characterized by: Both sides of the upper outer shell and the lower outer shell are provided with a plurality of oppositely positioned embedded openings, the embedded openings are provided with connecting seats, the bottoms of the connecting seats are provided with openings, bolts are sleeved in the openings, and the upper outer shell and the lower outer shell are locked by bolts and nuts.
5. The flushing and burying device for submarine cable shoal laying construction according to claim 1 is characterized by: Both ends of the outer surface of the upper housing are fixed with lifting ears.