An underwater drive switching system for trenching machine

Abstract

The present invention discloses an underwater driving switching system for a trencher, which belongs to the field of marine petroleum engineering technology, and includes a first propeller, a second propeller and a main hydraulic power. The first propeller is used to drive the trencher to move up and down, and the second propeller is used to move the trencher forward and backward. The main hydraulic power is connected to a function switching valve block, and the function switching valve block is provided with a first state and a second state. When the function switching valve block is in the first state, the main hydraulic power is connected to the first propeller through the function switching valve block to start the first propeller. When the function switching valve block is in the second state, the main hydraulic power is connected to the second propeller through the function switching valve block to start the second propeller. The present invention is improved on the basis of the original hydraulic system of the trencher, and the original hydraulic pipeline is slightly modified. Moreover, the function switching can be performed when the trencher is operated underwater, and there is no need to modify the equipment after the trencher equipment is recovered to the water surface.

Description

Technical Field

[0001] The invention belongs to the technical field of offshore petroleum engineering, and in particular relates to an underwater drive switching system for a trencher. Background Art

[0002] When a self-propelled trencher is used to dig trenches in soft seabed geology, the traveling tracks will slip severely, affecting the efficiency of trenching and even causing the trencher to be unable to move. Adding a thruster to the trencher can provide the trencher with additional positive thrust. The conventional method of adding a thruster requires the trencher system to be modified, including adding a new hydraulic control system and a new electrical control unit. Executing according to such a plan will directly increase the cost of the modification, and the efficiency from the design plan to the modification of the equipment is low, and it takes a lot of time and money. In order to reduce the complexity of the modification, the present invention designs a hydraulic power switching device system, which is small in size, simple to install, and easy to maintain, reducing the difficulty of the modification.

[0003] Therefore, it is urgent to design an underwater drive switching system for a trencher to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide an underwater drive switching system for a trencher, which has the advantage of sufficient forward power during underwater trenching operations and solves the problems mentioned in the background technology.

[0005] To achieve the above purpose, the specific technical solution of the underwater drive switching system of a trencher of the present invention is as follows: An underwater driving switching system for a trencher comprises a first propeller, a second propeller and a main hydraulic power, wherein the first propeller is used to drive the trencher to move up and down, and the second propeller is used to drive the trencher to move forward and backward, and the main hydraulic power is connected with a function switching valve block, the function switching valve block is connected with both the first propeller and the second propeller, and the function switching valve block is provided with a first state and a second state; When the function switching valve block is in the first state, the main hydraulic power is connected to the first thruster through the function switching valve block, so that the first thruster is started; When the function switching valve block is in the second state, the main hydraulic power is communicated with the second thruster through the function switching valve block, so that the second thruster is started.

[0006] Furthermore, the function switching valve block can only be connected to one of the first thruster or the second thruster.

[0007] Furthermore, the main hydraulic power is connected to a thruster control valve box, which is connected to a function switching valve block to control the forward or reverse rotation of the first thruster or the second thruster.

[0008] Furthermore, the function switching valve block includes a three-way valve, which is provided with a first liquid inlet end, a first liquid discharge end and a second liquid discharge end. The first liquid inlet end of the three-way valve is connected to the thruster control valve box, the first liquid discharge end of the three-way valve is connected to the first thruster, and the second liquid discharge end of the three-way valve is connected to the second thruster.

[0009] Further, the three-way valve is provided with a first state and a second state; When the three-way valve is in the first state, the main hydraulic power is connected to the first thruster through the three-way valve, so that the first thruster is started; When the three-way valve is in the second state, the main hydraulic power is connected to the second thruster through the three-way valve, so that the second thruster is started.

[0010] Furthermore, it also includes a function control valve box, which is connected to the three-way valve so as to control the three-way valve to switch between the first state and the second state through the function control valve box.

[0011] Further, the specific number of the three-way valves is two, and the three-way valves include a first three-way valve and a second three-way valve, and the first three-way valve and the second three-way valve are in the same state.

[0012] Further, liquid is introduced through the first three-way valve and refluxed through the second three-way valve, or liquid is introduced through the second three-way valve and refluxed through the first three-way valve.

[0013] Further, the thruster control valve box is provided with a forward state and a reverse state; When the propeller control valve box is in the forward rotation state, liquid is introduced through the first three-way valve and returned through the second three-way valve, so that the first propeller or the second propeller rotates forward; When the propeller control valve box is in the reverse state, liquid is introduced through the second three-way valve and returned through the first three-way valve, so that the first propeller or the second propeller is reversed.

[0014] Further, the function control valve box is connected to the first three-way valve and the second three-way valve, so as to control the first three-way valve and the second three-way valve to switch between the first state and the second state through the function control valve box.

[0015] The present invention has the following advantages: it is improved on the basis of the original hydraulic system of the trencher, the original hydraulic pipeline is slightly changed, and the function can be switched when the trencher is operated underwater, without the need to modify the equipment after the trencher equipment is recovered to the water surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the drive switching system of the present invention; Explanation of the markings in the figure: 1. Main hydraulic power; 2. First thruster; 21. Second thruster; 3. Thruster control valve box; 31. Function control valve box; 4. Function switching valve block; 41. First three-way valve; 42. Second three-way valve. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0018] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0019] Please refer to the attached Figure 1 The present invention describes an underwater drive switching system for a trencher.

[0020] In the prior art, a solution is needed to increase the propulsion force perpendicular to the tail of the trenching. In addition to the newly added horizontal thrusters, it is also necessary to update the software on the existing operating system, add an independently controlled underwater thruster valve box, and add a handle control or hydraulic valve box button on the water surface to control and adjust the newly added thrusters.

[0021] Therefore, the present trencher underwater drive switching system comprises a first propeller 2, a second propeller 21 and a main hydraulic power 1, wherein the first propeller 2 is used to drive the trencher to move up and down, and the second propeller 21 is used to drive the trencher to move forward and backward, and the main hydraulic power 1 is connected with a function switching valve block 4, which is connected to both the first propeller 2 and the second propeller 21, and the function switching valve block 4 is provided with a first state and a second state; When the function switching valve block 4 is in the first state, the main hydraulic power 1 is connected to the first propeller 2 through the function switching valve block 4, so that the first propeller 2 is started, thereby driving the trencher to move up and down, so that the trencher can move from above water to underwater or from underwater to above water; When the function switching valve block 4 is in the second state, the main hydraulic power 1 is connected to the second propeller 21 through the function switching valve block 4, so that the second propeller 21 is started, thereby driving the trencher to move forward and backward, so that the trencher can move forward or backward.

[0022] Furthermore, the function switching valve block 4 can only be connected to one of the first thruster 2 or the second thruster 21 , so that the first thruster 2 and the second thruster 21 cannot work at the same time, but can only work separately.

[0023] Furthermore, the function switching valve block 4 includes a three-way valve, which is provided with a first liquid inlet end, a first liquid discharge end and a second liquid discharge end. The first liquid inlet end of the three-way valve is connected to the thruster control valve box 3, the first liquid discharge end of the three-way valve is connected to the first thruster 2, and the second liquid discharge end of the three-way valve is connected to the second thruster 21.

[0024] Specifically, the three-way valve has a first state and a second state; When the three-way valve is in the first state, the main hydraulic power 1 is connected to the first propeller 2 through the three-way valve, so that the first propeller 2 is started, thereby driving the trencher to move up and down, so that the trencher can move from above water to underwater or from underwater to above water; When the three-way valve is in the second state, the main hydraulic power 1 is connected to the second propeller 21 through the three-way valve, so that the second propeller 21 is started, thereby driving the trencher to move forward and backward, so that the trencher can move forward or backward.

[0025] Furthermore, the switching system further comprises a function control valve box 31 , which is connected to the three-way valve so as to control the three-way valve to switch between the first state and the second state through the function control valve box 31 .

[0026] Further, the specific number of the three-way valves is two, and the three-way valves include a first three-way valve 41 and a second three-way valve 42, and the first three-way valve 41 and the second three-way valve 42 are in the same state.

[0027] Further, the liquid is fed into the first three-way valve 41 and flows back into the second three-way valve 42 , or the liquid is fed into the second three-way valve 42 and flows back into the first three-way valve 41 , so as to form a complete hydraulic flow path.

[0028] Specifically, the main hydraulic power 1 is connected to a thruster control valve box 3 , and the thruster control valve box 3 is connected to a function switching valve block 4 to control the first thruster 2 or the second thruster 21 to rotate forward or reverse.

[0029] Further, the thruster control valve box 3 is provided with a forward state and a reverse state; When the propeller control valve box 3 is in the forward rotation state, liquid flows in through the first three-way valve 41 and flows back through the second three-way valve 42, so that the first propeller 2 or the second propeller 21 rotates forward. When the first propeller 2 rotates forward, the trencher moves from above water to underwater, and when the second propeller 21 rotates forward, the trencher moves forward. When the thruster control valve box 3 is in the reverse state, liquid flows in from the second three-way valve 42 and flows back from the first three-way valve 41, causing the first thruster 2 or the second thruster 21 to reverse. When the first thruster 2 reverses, the trencher moves from underwater to above water, and when the second thruster 21 reverses, the trencher moves backward.

[0030] Further, the function control valve box 31 is connected to the first three-way valve 41 and the second three-way valve 42 so as to control the first three-way valve 41 and the second three-way valve 42 to switch between the first state and the second state through the function control valve box 31 .

[0031] The present invention is improved on the basis of the original hydraulic system of the trencher, with minor changes to the original hydraulic pipelines, and can perform function switching when the trencher is operated underwater, without the need to modify the equipment after the trencher equipment is recovered to the water surface.

[0032] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An underwater drive switching system for a trencher, characterized in that: It includes a first propeller, a second propeller and a main hydraulic power, the first propeller is used to drive the trencher to move up and down, the second propeller is used to move the trencher forward and backward, the main hydraulic power is connected to a function switching valve block, the function switching valve block is connected to both the first propeller and the second propeller, and the function switching valve block is provided with a first state and a second state; When the function switching valve block is in the first state, the main hydraulic power is connected to the first thruster through the function switching valve block, so that the first thruster is started; When the function switching valve block is in the second state, the main hydraulic power is communicated with the second thruster through the function switching valve block, so that the second thruster is started.

2. The trencher underwater drive switching system according to claim 1, characterized in that: The function switching valve block can be communicated with only one of the first thruster and the second thruster.

3. The trencher underwater drive switching system according to claim 1, characterized in that: The main hydraulic power is connected with a propeller control valve box, and the propeller control valve box is connected with a function switching valve block to control the first propeller or the second propeller to rotate forward or reverse.

4. The trencher underwater drive switching system according to claim 3, characterized in that: The function switching valve block includes a three-way valve, which is provided with a first liquid inlet end, a first liquid discharge end and a second liquid discharge end. The first liquid inlet end of the three-way valve is connected to the thruster control valve box, the first liquid discharge end of the three-way valve is connected to the first thruster, and the second liquid discharge end of the three-way valve is connected to the second thruster.

5. The trencher underwater drive switching system according to claim 4, characterized in that: The three-way valve has a first state and a second state; When the three-way valve is in the first state, the main hydraulic power is connected to the first thruster through the three-way valve, so that the first thruster is started; When the three-way valve is in the second state, the main hydraulic power is connected to the second thruster through the three-way valve, so that the second thruster is started.

6. The trencher underwater drive switching system according to claim 5, characterized in that: It also includes a function control valve box, which is connected to the three-way valve to control the three-way valve to switch between the first state and the second state through the function control valve box.

7. The trencher underwater drive switching system according to claim 5, characterized in that: The specific number of the three-way valves is two, and the three-way valves include a first three-way valve and a second three-way valve, and the first three-way valve and the second three-way valve are in the same state.

8. The trencher underwater drive switching system according to claim 7, characterized in that: Liquid is fed in through the first three-way valve and flows back through the second three-way valve, or liquid is fed in through the second three-way valve and flows back through the first three-way valve.

9. The trencher underwater drive switching system according to claim 8, characterized in that: The thruster control valve box is provided with a forward state and a reverse state; When the propeller control valve box is in the forward rotation state, liquid is introduced through the first three-way valve and returned through the second three-way valve, so that the first propeller or the second propeller rotates forward; When the propeller control valve box is in the reverse state, liquid is introduced through the second three-way valve and returned through the first three-way valve, so that the first propeller or the second propeller is reversed.

10. The trencher underwater drive switching system according to claim 6 or 7, characterized in that: The function control valve box is connected to the first three-way valve and the second three-way valve, so as to control the first three-way valve and the second three-way valve to switch between the first state and the second state through the function control valve box.

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