Ship jet propulsion system with gravity center adjustment function

Abstract

This application discloses a ship jet propulsion system with a center of gravity adjustment function, belonging to the field of jet propulsion technology application. It includes a pump and a nozzle, with the pump's discharge port connected to a center of gravity adjustment assembly and the nozzle via pipelines. The center of gravity adjustment assembly includes a stabilizer block and a telescopic adjustment device. The telescopic rod of the telescopic adjustment device is vertically arranged, and its end is fixedly connected to the stabilizer block. This application uses an adjustable-depth stabilizer block to change the ship's center of gravity position, thereby increasing the ship's stability and reducing the capsizing rate of ships using jet propulsion systems.

Description

Technical Field

[0001] This application belongs to the field of jet propulsion technology application, specifically relating to a ship jet propulsion system with center of gravity adjustment function. Background Technology

[0002] The main technical approach of jet propulsion technology for ships is to draw in external water through a pump and then spray it out through a nozzle. Based on the principle of conservation of momentum in Newton's third law, the high-pressure liquid ejected through the nozzle generates a reaction propulsion force to propel the ship forward. Compared with traditional propeller propulsion, the energy conversion efficiency can be increased from 75-80% to 85-92%, making it particularly suitable for smaller speedboats, yachts, and other vessels.

[0003] However, the concentrated propulsion vector of the jet propulsion system leads to torque imbalance, which reduces the ship's lateral stability coefficient by 0.18-0.25, resulting in a much higher capsizing rate for jet-propelled speedboats compared to propeller-driven boats. Utility Model Content

[0004] The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide a ship jet propulsion system with center of gravity adjustment function. This application changes the position of the ship's center of gravity by using a stabilizing block with adjustable depth, thereby increasing the ship's stability and reducing the capsizing rate of ships using jet propulsion systems.

[0005] The technical solution adopted by this application to solve its existing problems is: A ship jet propulsion system with center of gravity adjustment function includes a pump and a nozzle, wherein the pump's discharge port is connected to the center of gravity adjustment assembly and the nozzle via a pipeline.

[0006] The center of gravity adjustment assembly includes a stabilizing block and a telescopic adjustment device. The telescopic rod of the telescopic adjustment device is arranged vertically, and the end of the telescopic rod is fixedly connected to the stabilizing block.

[0007] Preferably, the telescopic adjustment device includes a telescopic cylinder, which is fixedly connected to the hull. A slider is slidably connected inside the telescopic cylinder. The bottom of the slider is fixedly connected to a stabilizing block via a telescopic rod. The stabilizing block is located on the lower outside of the telescopic cylinder. A spring is sleeved on the telescopic rod inside the telescopic cylinder. The top of the telescopic cylinder is connected to the high-pressure liquid supply main pipe at the pump drain end via an inlet pipe.

[0008] Preferably, an even number of center of gravity adjustment assemblies are symmetrically arranged on both sides of the ship.

[0009] Preferably, the stabilizing block is connected to at least two spaced telescopic adjustment devices, and the liquid inlet pipes of the telescopic adjustment devices on the same side of the ship are all connected to the high-pressure liquid supply main pipe through a single-sided liquid inlet main pipe.

[0010] Preferably, the high-pressure liquid supply main is connected to the nozzle inlet via a nozzle connecting pipe.

[0011] Preferably, the single-sided liquid inlet main pipe, the high-pressure liquid supply main pipe, and the nozzle connecting pipe are connected by a four-way ball joint.

[0012] Preferably, the nozzle has two rotating shafts symmetrically arranged around its axis protruding from its circumferential surface. Both rotating shafts are rotatably connected to the support frame, and the support frame is fixedly connected to the ship body.

[0013] One of the shaft ends is coaxially connected to a driven gear, which is connected to the steering drive mechanism.

[0014] Preferably, the support frame is provided with a plurality of fixing holes.

[0015] Preferably, the fixing hole is a waist-shaped hole.

[0016] Preferably, the steering drive mechanism includes a motor, which drives the driven gear to rotate.

[0017] Compared with the prior art, the beneficial effects of this application are as follows: (1) The depth of the stabilizing block of the center of gravity adjustment device can be adjusted. By adjusting the depth of the stabilizing block, the center of gravity of the ship can be changed, thereby reducing the risk of the ship capsizing at high speed.

[0018] (2) The adjustment of the depth of the stabilizer block is linked to the pressure of the liquid ejected from the nozzle, and thus connected with the ship speed. The faster the ship speed, the deeper the stabilizer block moves down, and the lower the ship's center of gravity, thus realizing the automatic matching of the ship's center of gravity adjustment and the ship speed. Attached Figure Description

[0019] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a structural diagram of a ship jet propulsion system with center of gravity adjustment function according to this application. Figure 2 This is a cross-sectional view of a center-of-gravity adjustment assembly in a ship jet propulsion system with center-of-gravity adjustment function, as described in this application.

[0021] In the diagram: 1-stabilizing block, 2-telescopic rod, 3-slider, 4-spring, 5-telescopic cylinder, 6-inlet pipe, 7-single-sided inlet main pipe, 8-four-way ball head, 9-high-pressure liquid supply main pipe, 10-nozzle connecting pipe, 11-nozzle, 1101-rotating shaft, 1102-driven gear, 12-support frame, 1201-fixing hole. Detailed Implementation

[0022] The attached figure shows a preferred embodiment of a ship jet propulsion system with center of gravity adjustment function. The following is a more detailed description of this application in conjunction with the attached figure.

[0023] Depend on Figure 1 As shown, a ship jet propulsion system with a center of gravity adjustment function includes a pump and a nozzle 11. The pump's discharge port is connected to the center of gravity adjustment assembly and the nozzle 11 via a pipeline. The pump's inlet pipeline can be arranged below the bow to facilitate liquid intake during ship movement.

[0024] The center of gravity adjustment assembly includes a stabilizing block 1 and a telescopic adjustment device. The telescopic rod 2 of the telescopic adjustment device is arranged vertically, and the end of the telescopic rod 2 is fixedly connected to the stabilizing block 1.

[0025] In order to achieve linkage between the pressure of the telescopic adjustment device and the liquid sprayed from the nozzle 11, by... Figure 2 As shown, the telescopic adjustment device includes a telescopic cylinder 5, which is fixedly connected to the hull. A slider 3 is slidably connected inside the telescopic cylinder 5. The bottom of the slider 3 is fixedly connected to a stabilizing block 1 via a telescopic rod 2. The stabilizing block 1 is located on the lower outside of the telescopic cylinder 5. A spring 4 is sleeved on the telescopic rod 2 located inside the telescopic cylinder 5. The top of the telescopic cylinder 5 is connected to the high-pressure liquid supply main pipe 9 at the pump drain end via an inlet pipe 6.

[0026] When the ship is stationary and the pump is not started, the slider 3 slides to the upper end of the telescopic cylinder 5 under the upward thrust of the spring 4, and the stabilizing block 1 is lifted, placing the ship's center of gravity at a high point. When the pump is started, the ship's speed is affected by the pump's discharge pressure; the higher the discharge pressure, the faster the ship's speed, and the greater the risk of the ship capsizing.

[0027] By using the center of gravity adjustment assembly linked to the nozzle 11, the greater the pump discharge pressure, the greater the compression of the spring 4, and the deeper the stabilizing block 1 moves downward, thereby lowering the ship's center of gravity and reducing the risk of the ship capsizing.

[0028] To maintain the ship's balance, an even number of center of gravity adjustment assemblies are symmetrically arranged on both sides of the ship.

[0029] To ensure more stable control of the stabilizing block 1, at least two spaced telescopic adjustment devices are connected to the stabilizing block 1. The liquid inlet pipes 6 of the telescopic adjustment devices on the same side of the ship are all connected to the high-pressure liquid supply main pipe 9 through a single-sided liquid inlet main pipe 7.

[0030] The high-pressure liquid supply main pipe 9 is connected to the inlet of the nozzle 11 via the nozzle connecting pipe 10. In order to reduce the friction resistance at the connection, the single-sided inlet main pipe 7, the high-pressure liquid supply main pipe 9, and the nozzle connecting pipe 10 are connected by a four-way ball joint 8.

[0031] In this embodiment, to adjust the angle of the nozzle 11 and thus enable the ship to turn, two rotating shafts 1101 are symmetrically arranged around its axis on the circumferential surface of the nozzle 11. The rotating shafts 1101 are arranged vertically, and both rotating shafts 1101 are rotatably connected to the support frame 12. The support frame 12 is fixedly connected to the ship body, which can be welded or detachably connected by bolts. In this embodiment, the support frame 12 is connected to the ship body by bolts. The support frame 12 is provided with several fixing holes 1201, which are oblong holes to facilitate adjustment of the installation position of the support frame 12.

[0032] One of the rotating shafts 1101 has a driven gear 1102 coaxially connected to its end. The driven gear 1102 is connected to a steering drive mechanism, which includes a motor that drives the driven gear 1102 to rotate. For ease of arrangement, the output shaft of the motor is connected to a driving gear, and the driving gear and the driven gear 1102 are connected by a chain or a timing belt.

[0033] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A ship jet propulsion system with center of gravity adjustment function, comprising a pump and a nozzle (11), characterized in that: The pump's drain outlet is connected to a center of gravity adjustment assembly and a nozzle (11) via a pipeline. The center of gravity adjustment assembly includes a stabilizing block (1) and a telescopic adjustment device. The telescopic rod (2) of the telescopic adjustment device is arranged vertically, and the end of the telescopic rod (2) is fixedly connected to the stabilizing block (1).

2. A ship jet propulsion system with center of gravity adjustment function according to claim 1, characterized in that: The telescopic adjustment device includes a telescopic cylinder (5), which is fixedly connected to the hull. A slider (3) is slidably connected inside the telescopic cylinder (5). The bottom of the slider (3) is fixedly connected to the stabilizing block (1) via a telescopic rod (2). The stabilizing block (1) is located below the outside of the telescopic cylinder (5). A spring (4) is sleeved on the telescopic rod (2) inside the telescopic cylinder (5). The top of the telescopic cylinder (5) is connected to the high-pressure liquid supply main pipe (9) at the pump drain end via an inlet pipe (6).

3. A ship jet propulsion system with center of gravity adjustment function according to claim 2, characterized in that: An even number of center of gravity adjustment assemblies are symmetrically arranged on both sides of the ship.

4. A ship jet propulsion system with center of gravity adjustment function according to claim 3, characterized in that: The stabilizer block (1) is connected to at least two spaced telescopic adjustment devices. The liquid inlet pipe (6) of the telescopic adjustment device on the same side of the ship is connected to the high-pressure liquid supply main pipe (9) through a single-sided liquid inlet main pipe (7).

5. A ship jet propulsion system with center of gravity adjustment function according to claim 4, characterized in that: The high-pressure liquid supply main pipe (9) is connected to the liquid inlet of the nozzle (11) through the nozzle connecting pipe (10).

6. A ship jet propulsion system with center of gravity adjustment function according to claim 5, characterized in that: The single-sided liquid inlet main pipe (7), the high-pressure liquid supply main pipe (9), and the nozzle connecting pipe (10) are connected by a four-way ball joint (8).

7. A ship jet propulsion system with center of gravity adjustment function according to any one of claims 1 to 6, characterized in that: The nozzle (11) has two rotating shafts (1101) protruding on its circumferential surface and arranged symmetrically around its axis. Both rotating shafts (1101) are rotatably connected to the support frame (12), and the support frame (12) is fixedly connected to the ship body. One of the shafts (1101) has a driven gear (1102) coaxially connected to its end, and the driven gear (1102) is connected to the steering drive mechanism.

8. A ship jet propulsion system with center of gravity adjustment function according to claim 7, characterized in that: The support frame (12) is provided with a number of fixing holes (1201).

9. A ship jet propulsion system with center of gravity adjustment function according to claim 8, characterized in that: The fixing hole (1201) is a waist-shaped hole.

10. The marine jet propulsion system with gravity center adjustment function according to claim 7, characterized in that: The steering drive mechanism comprises a motor, and the motor drives the driven gear (1102) to rotate.

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