Novel ocean current disturbance resistant vacuum pump suction hose automatic connection method

Abstract

The invention relates to the technical field of euphausia superba fishing boats, in particular to a novel ocean current disturbance resisting vacuum pump suction hose automatic connection method which comprises the following steps that a pump suction hose is connected with a connector; the connector is connected with the three-way traction cable; the three-way traction cables are matched with one another to operate, and the connector is pulled to a pipe connecting position of a ship end hard pipeline; the connector is connected with the hard pipeline; and the three-way traction cable is unloaded. Therefore, connection of the trawl pump suction hose is completed, and then the pump suction system works. The device can overcome and absorb horizontal and vertical fluctuation and axial overturning of the pump suction hose caused by ocean current disturbance, ensures the tightness of the joint, reduces the abrasion of the hose, and realizes safe and convenient automatic connection of the vacuum pump suction hose of the euphausia superba ship under the condition of ocean current disturbance. Manual traction and maintenance are not needed, the operation risk of personnel is reduced, the labor force of the personnel is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of Antarctic krill fishing vessels, and particularly to a novel automatic connection method for a vacuum pump suction hose that resists ocean current disturbance. Background Art

[0002] Antarctic krill fishing is the most complex in ocean fishing equipment. The operation mode of Antarctic krill fishing mostly adopts truss trawl continuous pump suction fishing, and the pump suction mode is vacuum pump suction. Existing fishing equipment mostly uses manual connection of the pump suction hose to the rigid pipeline at the ship end, that is, during docking, the operator grabs the output end of the pump suction hose by hand and locks it after completely aligning the output flange with the flange of the rigid pipeline at the ship end. However, during the actual connection operation, due to the great disturbing force of the ocean current on the hose, it is quite difficult for manpower to control the complete alignment of the hose with the flange of the ship's rigid pipeline, resulting in a large connection difficulty between the pump suction hose and the rigid pipeline and affecting the work efficiency. Therefore, studying the pump suction connection under the condition of ocean current disturbance is of great significance for Antarctic krill fishing operations. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a novel automatic connection method for a vacuum pump suction hose that resists ocean current disturbance, so as to realize the safe and convenient automatic connection of the vacuum pump suction hose on the Antarctic krill ship under the condition of ocean current disturbance.

[0004] To solve the above technical problem, the present invention proposes a novel automatic connection method for a vacuum pump suction hose that resists ocean current disturbance, including the following steps: Connect the pump suction hose to the connector; connect the connector to the three-way traction cable; the three-way traction cables cooperate with each other to tow the connector to the pipe connection position of the rigid pipeline at the ship end; connect the connector to the rigid pipeline; disconnect the three-way traction cable.

[0005] Further, the three-way traction cables cooperate with each other to tow the connector to the pipe connection position of the rigid pipeline at the ship end, including the following steps: The three-way traction cables include a transverse traction cable, a longitudinal traction cable and a forward traction cable. The transverse traction cable and the longitudinal traction cable respectively tow the connector from the transverse and longitudinal directions to align the connector with the rigid pipe orifice, and the forward traction cable tows the connector along the axial direction of the rigid pipeline to move to the pipe connection position of the rigid pipeline at the ship end.

[0006] More optimally, a supporting device is provided in front of the pipe connection position of the rigid pipeline at the ship end. After the connector is connected to the rigid pipeline, the connector is fixed with the supporting device, and then the three-way traction cable is disconnected.

[0007] Furthermore, both ends of the connector are quick connectors, and the pump suction hose is connected to the connector through quick connectors; the connector is connected to the rigid pipe through quick connectors.

[0008] Preferably, a rotator and an anti-wave flexible bellows are provided at the left end of the connector. The left quick connector for connecting with the pump suction hose is connected to the rotator, and the inside between the left quick connector and the rotator is an anti-wave flexible bellows.

[0009] The present invention has the following beneficial effects: (1) By means of three-way traction, the present invention mechanically tractions and recovers the pump suction hose, provides three-way pulling force, eliminates the need for manual pulling and maintenance, reduces the operation risk of personnel, alleviates the labor of personnel, and improves the operation efficiency.

[0010] (2) By connecting the vacuum pump suction hose and the rigid pipe at the ship end through the connector, the present invention can overcome and absorb the horizontal, vertical fluctuations and axial flipping of the pump suction hose caused by ocean current disturbances, ensure the sealing performance of the connection between the vacuum pump suction hose and the rigid pipe at the ship end, and reduce the wear of the hose at the same time.

[0011] (3) The present invention provides a supporting device. On the one hand, it supports the connector and the pump suction hose at the connection end, which is beneficial to the locking and fixing after the connection between the pump suction hose and the rigid pipe at the ship end; on the other hand, during the process of the pump suction hose advancing towards the ship pipe, the connector and the pump suction hose at the connection end are placed on the supporting device, and the supporting device serves as a guide for the pump suction hose to advance towards the ship pipe, improving the accuracy of pipe connection alignment. Description of the Drawings

[0012] The technical solutions of the present invention will be further specifically described below in conjunction with the drawings and specific embodiments.

[0013] Figure 1 It is a position relationship diagram of the ship, the pump suction hose and the krill net during operation.

[0014] Figure 2 It is a schematic diagram of the vacuum pump suction hose being disturbed by ocean currents.

[0015] Figure 3 It is an assembly drawing of the connection between the vacuum pump suction hose and the rigid pipe at the ship end.

[0016] Figure 4 It is a structural diagram of the connector. Specific Embodiments

[0017] The present invention is applicable to continuous pump suction fishing of Antarctic krill at different operating water depths. Such as Figure 1The position relationship diagram of the ship, the pump suction hose and the krill net during operation. The fishing boat drags the krill net 10 through the trawl wire rope 9 for underwater fishing. One end of the pump suction hose 1 underwater extends into the krill net 10, and the end above water is connected to the rigid pipe at the ship end. In this way, the Antarctic krill in the fishing net is transported to the fishing boat through the pump suction hose 1.

[0018] During the dragging process of the ship, the vacuum pump suction hose is disturbed by ocean currents and will exhibit phenomena of radial fluctuation and axial flipping, as Figure 2 shown, flipping along the x-axis direction and fluctuating along the y and z-axis directions.

[0019] Combined with this Figure 3 shown, the novel automatic connection method of the vacuum pump suction hose against ocean current disturbance proposed by the invention includes the following steps: Step a: Connect the pump suction hose 1 and the connector 2 through the left-end quick connector; Step b: Connect the connector to the transverse pulling cable 5, the longitudinal pulling cable 6, and the forward pulling cable 7 respectively; Step c: Through the cooperation operation of the transverse pulling cable 5 and the longitudinal pulling cable 6, the connector 2 is aligned with the pipe interface of the ship's rigid pipe 4, and the forward pulling cable 7 pulls the hose close to the front position of the pipe connection of the ship's rigid pipe 4. The forward pulling cable 7 pulls the connector to the supporting device 3 in front of the pipe connection position of the ship-end rigid pipe 4; Step d: The forward pulling cable continues to pull the connector 2 to the pipe connection position of the rigid pipe 4; Step e: Connect the connector 2 and the rigid pipe 4 through a quick connector; Step f: Use the supporting device 3 to lock and fix the connector 2; Step g: Disconnect the three-way pulling cable.

[0020] At this time, the rapid automatic connection of the hose and the hard pipe is completed, and the pump suction system can be started to work.

[0021] The three-way tension cable is a high-strength composite material, mainly used to bear large axial and radial tensile forces, as well as torque. The three-way tension cable includes a transverse tension cable 5, a longitudinal tension cable 6 and a forward tension cable 7. The other end of the forward tension cable 7 is connected to the guiding device 8 on the ship. The transverse tension cable 5 and the longitudinal tension cable 6 are also respectively controlled by the traction devices arranged on the ship. During the lowering process of the pump suction hose, the part in the water is simultaneously affected by the buoyancy and the tensile force generated by the ship towing, and is in a state of force balance. The weight G0 of the hose end in the air needs to be balanced by the resultant force F1 of the transverse tension cable tension Fh and the vertical tension cable tension Fc. Under different equipment conditions, the respective horizontal angles of the transverse tension cable and the longitudinal tension cable are θh and θc, then F1 = Fh×sinθh + Fc×sinθc ≥ G0. Through the coordinated operation of the transverse tension cable and the longitudinal tension cable, the hose automatic connector is aligned with the pipe interface of the ship's rigid pipe, and the forward tension cable is responsible for pulling the hose close to the pipe connection of the ship's rigid pipe. At the same time, the forward tension cable tension F2 needs to overcome the shape resistance F0 of the hose at the water surface, that is, F2 > F0.

[0022] The connector consists of quick connectors 11 and 12 at both ends, a rotator 13 and an anti-wave flexible bellows 14, as Figure 4 shown. Among them, the quick connector 11 is connected to the rotator, and the inside is an anti-wave flexible bellows. The quick connector is used for the quick connection and disassembly of the connector with the pump suction hose and the ship's steel pipe. The rotator 13 is in the form of a lined sleeve seal, used for the axial flipping of the follow-up hose, and at the same time ensuring the tightness requirements at the rotating part.

[0023] The supporting device is a rigid fixing structure existing on the market, used to improve the stability and reliability of the connection.

[0024] Finally, it should be noted that the above specific implementation manners are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A novel automatic connection method for a vacuum pump suction hose resistant to ocean current disturbance, characterized in that, Including the following steps: Connect the pump suction hose to the connector; connect the connector to the three-way towing cable; the three-way towing cables cooperate with each other to tow the connector to the pipe connection position of the rigid pipe at the ship end; connect the connector to the rigid pipe; Disconnect the three-way towing cable.

2. The automatic connection method of the vacuum pump suction hose with novel anti-ocean current disturbance according to claim 1, characterized in that, The three-way towing cables cooperate with each other to tow the connector to the pipe connection position of the rigid pipe at the ship end, including the following steps: The three-way towing cables include a transverse towing cable, a longitudinal towing cable and a forward towing cable. The transverse towing cable and the longitudinal towing cable tow the connector from the transverse and longitudinal directions respectively to align the connector with the rigid pipe opening, and the forward towing cable tow the connector along the axial direction of the rigid pipe to move to the pipe connection position of the rigid pipe at the ship end.

3. The automatic connection method of the vacuum pump suction hose for a new type of anti-ocean current disturbance according to claim 1, characterized in that, A supporting device is provided in front of the pipe connection position of the rigid pipe at the ship end. After the connector is connected to the rigid pipe, the connector is fixed with the supporting device, and then the three-way towing cable is disconnected.

4. The automatic connection method of the vacuum pump suction hose with novel anti-ocean current disturbance according to claim 1, characterized in that, Both ends of the connector are quick connectors. The pump suction hose is connected to the connector through a quick connector; the connector is connected to the rigid pipe through a quick connector.

5. The automatic connection method of the vacuum pump suction hose with novel anti-ocean current disturbance according to claim 1, characterized in that, A rotator and an anti-wave flexible bellows are provided at the left end of the connector. The left quick connector for connecting to the pump suction hose is connected to the rotator, and the inside between the left quick connector and the rotator is an anti-wave flexible bellows.

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