Planing boat propelled by single spray pump
By designing the inclined curved transition water suction port and boat line in the scooter, the problem of large bottom pressure affecting the scooter efficiency is solved, and a higher scooter efficiency is achieved.
Patent Information
- Application Number
- CN202423227138.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The pressure on the bottom of the water suction port and the line transition of the existing scooter boat is high, which affects the scooter efficiency.
The transition surface between the water suction port and the boat line type is designed as a slanted curved surface that extends backwards, so that it gradually approaches until it overlaps, forming a more uniform transition in the longitudinal direction of the bottom of the ship.
Reduce the pressure drop at the bottom of the boat and increase the lift at the tail, thereby improving the sliding efficiency.
Smart Images
Figure CN223187664U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of planing boats, and in particular relates to a planing boat propelled by a single jet pump. Background Art
[0002] A planing boat is a small boat that glides on the water at high speed. Its line shape is the main factor that determines its performance. As a type of planing boat, a single-jet planing boat mainly uses a single water jet propulsion device to achieve high-speed navigation. The water jet propulsion device is installed at the stern of the boat, and a water intake is set at the stern for the water pump to absorb water. Currently, the water intake and the original boat line shape are directly transitioned through a straight inclined surface inclined forward and backward, such as Figure 1 As shown in FIG, this transition method increases the bottom pressure of the boat at the transition point, reduces the tail lift, and thus affects the gliding efficiency. Utility Model Content
[0003] The utility model proposes a planing boat propelled by a single jet pump, which changes the transition surface between the water intake and the original boat line, can effectively reduce the boat bottom pressure at the transition point, increase the tail lift, and thus improve the planing efficiency.
[0004] To this end, the technical solution adopted by the present invention is: a planing boat propelled by a single jet pump, including a boat bottom, an inner splash-proof strip is provided on the side of the boat bottom, a single jet pump is provided at the tail of the boat bottom, and a water suction port is provided on the boat bottom for the single jet pump to suck water. The boat bottom located in front of the water suction port and below the inner splash-proof strip forms two backward extending inclined curved surfaces with the corresponding contact boat bottom, and the top surface of each inclined curved surface gradually descends until it is flush with the corresponding contact boat bottom, and the distance between the two inclined curved surfaces gradually approaches from front to rear until they coincide at the water suction port.
[0005] As a preferred embodiment of the above solution, the starting position of each inclined surface is 1-1.2 times the length of the water suction port of the jet pump in front of the water suction port.
[0006] More preferably, the two inclined curved surfaces are arranged bilaterally symmetrically.
[0007] The beneficial effects of the present invention are as follows: the transition between the water intake and the original boat line is designed as an inclined curved surface, and the two inclined curved surfaces gradually approach from front to rear until they coincide at the water intake, so that the two sides gradually converge and disappear toward the middle, making the longitudinal flow from the bottom of the ship more uniform and smooth in its transition to the rear, reducing the pressure drop on the bottom of the ship at that location, increasing the lift of the tail and thus improving the gliding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 Schematic diagram of the prior art.
[0009] Figure 2 Schematic diagram of CFD resistance analysis in the prior art.
[0010] Figure 3 It is a schematic diagram of the present utility model.
[0011] Figure 4 This is a schematic diagram of CFD resistance analysis of the present invention.
[0012] Reference numerals: boat bottom-1, single jet pump-2, water intake-3, inclined surface-4. DETAILED DESCRIPTION
[0013] The present invention will be further described below with reference to the following embodiments and accompanying drawings:
[0014] like Figure 3 As shown, a planing boat propelled by a single jet pump mainly consists of a boat bottom 1 and a single jet pump 2, wherein the single jet pump 2 is arranged on the bottom surface of the tail of the boat bottom 1, and a water suction port 3 for the single jet pump to suck water is provided on the bottom surface of the boat bottom 2 near the tail, and an internal splash strip is provided on the side of the boat bottom 1.
[0015] The boat bottom 1, located in front of the water intake 3 and below the inner splash bar, forms two rearward-extending inclined curved surfaces 4 with the corresponding contact bottom. This means that the transition between the water intake and the original boat line is formed as two inclined curved surfaces. The top surface of each inclined curved surface 4 gradually descends until it is flush with the corresponding contact bottom. Simultaneously, the distance between the two inclined curved surfaces 4 gradually decreases from front to back until they overlap at the water intake. In other words, the two inclined curved surfaces gradually converge from the sides toward the center and disappear.
[0016] The starting position of each inclined curved surface 4 is 1-1.2 times the length of the water suction port of the jet pump in front of the water suction port, and the two inclined curved surfaces are arranged symmetrically on the left and right.
[0017] In order to verify the effect of this application, the modified model and the original model were subjected to CFD (computational fluid dynamics) resistance comparison analysis. The specific analysis results are shown in Figure 2 and Figure 4 From the analysis results, we can see that the resistance of the hull is reduced by about 7% after the modification.
Claims
1. A planing boat propelled by a single jet pump, comprising a boat bottom (1), the side of the boat bottom (1) being provided with an inner splash bar, a single jet pump (2) being provided at the tail of the boat bottom (1), and a water intake (3) for the single jet pump to absorb water, characterized in that: The boat bottom (1) located in front of the water suction port (3) and below the inner splash bar forms two inclined curved surfaces (4) extending backward with the corresponding contact boat bottom, and the top surface of each inclined curved surface (4) gradually descends until it is flush with the corresponding contact boat bottom, and the distance between the two inclined curved surfaces (4) gradually decreases from front to back until they overlap at the water suction port.
2. The planing boat propelled by a single jet pump according to claim 1, characterized in that: The starting position of each inclined surface (4) is located at a length of 1-1.2 jet pump water inlet in front of the water inlet.
3. The planing boat propelled by a single jet pump according to claim 1, characterized in that: The two inclined curved surfaces (4) are arranged symmetrically on the left and right.