Jet type ditcher and jet arm with adjustable nozzle number thereof

Abstract

The technical scheme of the utility model discloses a jet-type trencher and a jet arm with adjustable nozzle quantity thereof. The jet-type trencher comprises a jet arm, the nozzle is arranged on the spraying arm and is used for allowing water flow to pass through and spraying outwards; and the adjusting device is connected with the spraying arm and the nozzle, and the working state of the nozzle is controlled by adjusting the angle of the adjusting device. According to the ditcher, the number of the nozzles during operation of the ditcher can be controlled in the mode that the blocking pieces are additionally arranged on a traditional jetting arm, the precision during jetting can be improved, the flexibility and efficiency of the ditcher are improved, the diversified requirements of seabed engineering are met, resource waste is reduced, and the marine environment is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of marine engineering equipment, in particular to a jet trencher and a jet arm with adjustable nozzle quantity. Background Art

[0002] A submarine cable laying trencher is a device specially used for digging trenches on the seabed to lay submarine optical cables, electrical cables or pipelines. With the development of technology, existing submarine cable laying trenchers are constantly updated and have different technical characteristics and types. Common submarine cable laying trenchers include chain trenchers, cutting trenchers, blowing trenchers, submersible trenchers, drilling trenchers and jet trenchers. Among them, jet trenchers are a special type of trenching equipment commonly used in submarine engineering. The working principle of the jet trencher is to use a water jet arm to form a groove in the seabed soil by using the power of a high-pressure water jet. The high-speed flow of water can peel off the seabed soil and flush it out of the trench, thereby forming the required laying path.

[0003] Compared with other trenching machines, jet trenching machines have flexible operation and precise control systems. They can adjust pressure and flow according to actual needs to ensure the accurate position and depth of the trench. And the applicability is relatively wide. Jet trenching machines are suitable for various seabed geological conditions, including soft soil, sandy seabed and some rock geology. They can operate in sea areas of different depths and are generally able to adapt to engineering tasks of different scales and complexities. Jet trenching machines use water as a power source. Compared with other trenching methods, they have less environmental impact. The impact of water jets on the marine ecosystem is relatively low, which can reduce interference with marine life and have certain environmental protection. However, the nozzles on the jet arms of existing jet trenching machines have certain limitations. The nozzles are fixed to the jet arms, and the nozzles do not have the function of adjusting a certain angle, which greatly reduces their working efficiency. On the other hand, the number of nozzles cannot be locally controlled, and the accuracy of the jets needs to be optimized. Utility Model Content

[0004] The technical problem solved by the utility model is that the nozzles on the spray arms of the existing jet trenching machines have certain limitations. The nozzles are fixed to the spray arms and the nozzles do not have the function of adjusting a certain angle, which greatly reduces their working efficiency. On the other hand, the number of nozzles cannot be locally controlled, and the accuracy of the jets needs to be optimized.

[0005] In order to solve the above technical problems, the technical solution of the utility model provides a spray arm with adjustable nozzle quantity, which includes:

[0006] Spray arms;

[0007] a nozzle mounted on the spray arm and through which water flows and sprays outward; and

[0008] An adjusting device is connected to the spray arm and the nozzle, and the working state of the nozzle is controlled by adjusting the angle of the adjusting device.

[0009] Optionally, the adjusting device comprises:

[0010] a nut mounted in the spray arm;

[0011] A baffle rotatably arranged at the water inlet of the nozzle via a hinge;

[0012] a metal wire passing through the nut and connected to the baffle;

[0013] After the metal wire is pulled, the metal wire drives the baffle to rotate around the hinge and realizes opening or closing of the water inlet of the nozzle.

[0014] Optionally, the number of the nozzles is plural and they are arranged in a row in the length direction of the spray arm, the metal wire passes through the nut and is connected to the baffles of the water inlets of the plural nozzles, and after pulling the metal wire, the metal wire drives the plural baffles to rotate around the hinge and realize the opening or closing of the water inlets of the plural nozzles.

[0015] Optionally, the number of the nozzles is plural and they are divided into two rows and symmetrically arranged in the length direction of the spray arm. The number of the metal wires is two. The metal wires pass through the nut and are connected to the baffles of the water inlets of the plurality of nozzles. After pulling the metal wires, the metal wires drive the plurality of baffles to rotate around the hinges and realize the opening or closing of the water inlets of the plurality of nozzles.

[0016] Optionally, the number of the nozzles is plural and is divided into at least three rows and evenly distributed circumferentially in the length direction of the spray arm. The number of the metal wires is at least three. The metal wire passes through the nut and is connected to the baffles of the water inlets of the plurality of nozzles. After pulling the metal wire, the metal wire drives the plurality of baffles to rotate around the hinge and realizes the opening or closing of the water inlets of the plurality of nozzles.

[0017] Optionally, the regulating device includes a first regulating device and a second regulating device, which are respectively arranged on the left and right sides of the nozzle, the first regulating device controls the opening of the water inlet of the nozzle, and the second regulating device controls the closing of the water inlet of the nozzle.

[0018] Optionally, the adjusting device further comprises a perforated member for the metal wire to pass through, which is arranged on the spray arm close to the nozzle, and the perforated member is used to fit against the inner wall of the spray arm after the baffle rotates around the hinge.

[0019] Optionally, the adjusting device further comprises a metal ring disposed on the baffle, and the metal ring is used for fixing and connecting the metal wire.

[0020] Optionally, the spray arm is provided with a mounting groove for positioning and mounting the nut.

[0021] In order to solve the above-mentioned technical problems, the technical solution of the utility model also provides a jet trencher, which includes a jet arm with adjustable nozzle quantity as described in any one of the above items.

[0022] The beneficial effects of the technical solution of the utility model are:

[0023] The utility model can control the number of nozzles of the trencher during operation by adding baffles to the traditional spray arm, thereby improving the accuracy of the jet, increasing its flexibility and efficiency, meeting the diverse needs of submarine engineering, reducing resource waste, and protecting the marine environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a spray arm with adjustable nozzle quantity in an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the adjusting device in the embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the nozzle in the embodiment of the utility model;

[0027] Figure 4 It is a schematic diagram of the installation of the perforating member and the spray arm in the embodiment of the utility model.

[0028] In the accompanying drawings: 1. spray arm, 2. nozzle, 3. metal wire, 4. punching piece, 5. baffle, 6. hinge, 7. nut, 8. movable buckle, 9. mounting groove, 10. metal ring, 100. first adjusting device, 200. second adjusting device. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] See also Figure 1 As shown, an embodiment of a spray arm with adjustable number of nozzles is shown, which includes a spray arm 1; a nozzle 2 installed on the spray arm 1 and through which water flows and sprays outward; and an adjusting device, which is connected to the spray arm 1 and the nozzle 2, and the working state of the nozzle 2 is controlled by adjusting the angle of the adjusting device.

[0035] In this embodiment, continue to refer to Figure 1 and Figure 2 As shown, the adjustment device includes a nut 7 installed in the spray arm 1; a baffle 5 rotatably arranged at the water inlet of the nozzle 2 through a hinge 6; a metal wire 3 passing through the nut 7 and connected to the baffle 5; after pulling the metal wire 3, the metal wire 3 drives the baffle 5 to rotate around the hinge 6 and realizes the opening or closing of the water inlet of the nozzle 2.

[0036] Of course, in other embodiments, the number of nozzles 2 can be plural and arranged in a row in the length direction of the spray arm 1. The metal wire 3 passes through the nut 7 and is connected to the baffles of the water inlets of the plurality of nozzles 2. After pulling the metal wire 3, the metal wire 3 drives the plurality of baffles 5 to rotate around the hinge 6 and realizes the opening or closing of the water inlets of the plurality of nozzles 2.

[0037] Of course, in other embodiments, the number of nozzles 2 can be plural and divided into two rows and symmetrically arranged in the length direction of the spray arm 1. The number of metal wires 3 is two. The metal wire 3 passes through the nut 7 and is connected to the baffles of the water inlet of the plurality of nozzles 2. After pulling the metal wire 3, the metal wire 3 drives the plurality of baffles 5 to rotate around the hinge 6 and realizes the opening or closing of the water inlet of the plurality of nozzles 2.

[0038] Of course, in other embodiments, the number of nozzles 2 can be plural and divided into at least three rows and evenly distributed circumferentially in the length direction of the spray arm 1. The number of metal wires 3 is at least three. The metal wire 3 passes through the nut 7 and is connected to the baffles of the water inlet of the plurality of nozzles 2. After pulling the metal wire 3, the metal wire 3 drives the plurality of baffles 5 to rotate around the hinge 6 and realizes the opening or closing of the water inlet of the plurality of nozzles 2.

[0039] In this embodiment, Figure 2 As shown, the regulating device includes a first regulating device 100 and a second regulating device 200, which are respectively arranged on the left and right sides of the nozzle 2. The first regulating device 100 controls the opening of the water inlet of the nozzle 2, and the second regulating device 200 controls the closing of the water inlet of the nozzle 2.

[0040] In this embodiment, Figure 4 As shown, the adjusting device further comprises a perforated member 4 for the metal wire 3 to pass through, which is arranged on the spray arm 1 near the nozzle 2 , and the perforated member 4 is used to fit against the inner wall of the spray arm 1 after the baffle 5 rotates around the hinge 6 .

[0041] In this embodiment, Figure 3 As shown, the adjusting device further comprises a metal ring 10 arranged on the baffle 5 , and the metal ring 10 is used for fixing the connecting metal wire 3 .

[0042] In this embodiment, Figure 1 As shown, the spray arm 1 is provided with a mounting groove 9 for positioning and mounting the nut 7 .

[0043] The technical solution of this embodiment also provides a jet trencher, which includes a spray arm with adjustable nozzle quantity as described in any one of the above.

[0044] The characteristics and functions of the present invention can be further understood through the following description.

[0045] In order to improve the efficiency in the process of laying submarine cables, the technical solution of this embodiment partially optimizes the spray arm of the traditional jet trencher. It aims to solve the limitations of the spray arm of the traditional jet trencher in submarine operations. Existing trenchers usually lack the function of controlling the number of nozzles, which limits their application under different depths and terrain conditions. In addition, the lack of a nozzle jet control mechanism may lead to unnecessary water waste and environmental impact. Therefore, the technical solution of this embodiment aims to provide a jet trencher spray arm with nozzle number control to increase its flexibility and efficiency, meet the diverse needs of submarine engineering, reduce resource waste, and protect the marine environment.

[0046] The technical solution of this embodiment is to add a baffle 5 to the nozzle 2 on the inner wall of the traditional spray arm 1 to control the opening and closing of the spray nozzle 2, so as to control the number of spray nozzles in operation when the jet trencher is in operation. The nozzle 2 operation number control system is mainly composed of a baffle 5, a metal wire 3, a switch, etc. (that is, a nut 7, a metal wire 3 and a movable buckle 8 and other parts. In other embodiments, traditional parts that can drive the metal wire 3 to rotate can also be set, such as small and medium-sized motors or small and medium-sized winches. The baffle 5 is connected to the nozzle 2 in the form of a hinge 6, which is similar to the working principle of the opening and closing of a home wooden door. The other end of the baffle 5 is welded with a metal ring 10, which is fixed to the metal wire 3. The baffle 5 can be opened and closed by pulling the metal wire 3. Since the nozzle 2 and the spray arm 1 are at a certain angle, it is difficult to open and close the two symmetrical nozzles 2 through a switch without being affected by the water flow. Therefore, a perforated member 4 is welded inside the pipe of the spray arm 1. When the baffle 5 is opened, the metal wire 3 passing through the perforated member 4 can tighten the baffle 5 and cling to the inner wall of the pipe of the spray arm 1 to prevent the baffle 5 from being impacted by the high-pressure water flow. The switch part is placed on the surface of the spray arm 1, and a movable buckle 8 design is used. When the baffle 5 is opened, in order to prevent the baffle 5 from being impacted to close the nozzle opening, a bolt (not shown) is inserted into the bolt hole of the nut 7 behind the movable buckle 8 to lock the movable buckle 8 and fix the metal wire 3 so that it does not loosen, thereby fixing the baffle 5.

[0047] Taking into account that the above scheme controls the opening and closing of multiple nozzles at a time, and has poor maneuverability and flexibility, according to different operational requirements, in other embodiments, a ball valve (not shown) can be further installed in the traditional nozzle 2, so that the opening and closing operation of a single nozzle 2 can be controlled, and the size of the water flow can also be controlled by adjusting the angle of the ball valve.

[0048] Alternatively, in other embodiments, only one adjustment device may be configured for each nozzle 2, and all the adjustment devices are connected to the controller through background communication and are precisely controlled by the controller. The technical solutions involved in the extended embodiments including the above-mentioned technology should be within the protection scope of this embodiment. There are many specific implementation methods, which will not be described one by one here.

[0049] In addition, the number of nozzles 2 of the water jet arm 1 of the submarine cable laying trencher can be adjusted, which changes the existing design status of the fixed number of nozzles 2. The spray arm 1 with adjustable number of nozzles 2 can timely adapt to different environmental requirements and save energy. The baffle 5 is composed of a hinge 6, a metal ring 10 and a stainless steel cover (not shown). The connection between the metal wire 3 and the baffle 5 can realize the closing or opening of four or more nozzles 2 at the same time (such as Figure 1 As shown in FIG. 1 , and the perforated member 4 allows the baffle 5 to be close to the inner wall of the pipe of the spray arm 1 when it is opened, reducing the impact on the fluid. Finally, the design of the nut 7 with a bolt hole can fix the switch and the baffle 5 without being affected by the high-pressure water flow.

[0050] The working principle of this embodiment is described in detail below:

[0051] The spray arm 1 and the nozzle 2 are the main structure, and the high-pressure water flows through them. When all nozzles 2 need to work, the movable buckle 8 is moved to the ON position, and a bolt is inserted into the bolt hole of the nut 7 to fix it to prevent the movable buckle 8 from moving. At this time, the metal wire 3 moves with the movable buckle 8, driving the metal ring 10 on the baffle 5. The baffle 5 and the nozzle 2 are fixed by a hinge 6 made of metal material. At this time, the baffle 5 can be opened by the hinge 6. The metal wire 3 fixes the baffle 5 to the inner wall of the pipe of the spray arm 1 through the perforated member 4 to avoid water scouring. At this time, the high-pressure water flow can be directly sprayed out through the nozzle 2. When multiple nozzles 2 are not required to work, the movable buckle 8 can be moved to the OFF position. At this time, the baffle 5 and the nozzle 2 are closed by pulling the metal wire 3, thereby reducing the number of nozzles 2 working. Of course, preferably in other embodiments, the adjustment device can be set to realize automatic control through a background controller, which is not repeated here.

[0052] In summary, the utility model can control the number of nozzles of the trencher during operation by adding baffles to the traditional spray arm, thereby improving the accuracy of the jet, increasing its flexibility and efficiency, meeting the diverse needs of submarine engineering, reducing resource waste, and protecting the marine environment.

[0053] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A spray arm with adjustable nozzle quantity, characterized in that: include: Spray arms; A nozzle mounted on the spray arm and through which water flows and sprays outwards; as well as An adjusting device is connected to the spray arm and the nozzle, and the working state of the nozzle is controlled by adjusting the angle of the adjusting device.

2. The spray arm with adjustable nozzle quantity as claimed in claim 1, characterized in that: The regulating device comprises: a nut mounted in the spray arm; A baffle rotatably arranged at the water inlet of the nozzle via a hinge; a metal wire passing through the nut and connected to the baffle; After the metal wire is pulled, the metal wire drives the baffle to rotate around the hinge and realizes opening or closing of the water inlet of the nozzle.

3. The spray arm with adjustable nozzle quantity as claimed in claim 2, characterized in that: The number of the nozzles is plural and they are arranged in a row in the length direction of the spray arm. The metal wire passes through the nut and is connected to the baffles of the water inlets of the plural nozzles. After the metal wire is pulled, the metal wire drives the plural baffles to rotate around the hinge and realize the opening or closing of the water inlets of the plural nozzles.

4. The spray arm with adjustable nozzle quantity as claimed in claim 3, characterized in that: The regulating device comprises a first regulating device and a second regulating device, which are respectively arranged on the left and right sides of the nozzle. The first regulating device controls the opening of the water inlet of the nozzle, and the second regulating device controls the closing of the water inlet of the nozzle.

5. The spray arm with adjustable nozzle quantity as claimed in claim 4, characterized in that: The adjusting device further comprises a perforated member for the metal wire to pass through, which is arranged on the spray arm at a position close to the nozzle, and the perforated member is used to fit against the inner wall of the spray arm after the baffle rotates around the hinge.

6. The spray arm with adjustable nozzle quantity as claimed in claim 5, characterized in that: The adjusting device further comprises a metal ring arranged on the baffle, and the metal ring is used for fixing and connecting the metal wire.

7. The spray arm with adjustable nozzle quantity as claimed in claim 6, characterized in that: The spray arm is provided with a mounting groove for positioning and mounting the nut.

8. A jet trencher, characterized in that: The invention comprises a spray arm with adjustable nozzle quantity as claimed in any one of claims 1 to 7.

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