Alarm device for pontoon accumulated water of seaplane

Abstract

The invention relates to the technical field of aviation equipment, in particular to a seaplane buoy ponding alarm device which comprises a buoy, an alarm triggering structure and a water containing cup. The alarm triggering structure comprises a U-shaped tube, a Venturi tube, a rubber film, a puncture structure, a closed cavity and an alarm; the left end of the U-shaped pipe extends into the water containing cup, and a rubber film is sealed at the right port of the U-shaped pipe; the puncturing structure is arranged below the rubber film; the left upper port of the venturi tube is connected with the closed cavity, and the left lower port of the venturi tube extends into the left end of the U-shaped tube and is used for generating negative pressure; the closed cavity is a closed container, the thin copper sheet is closed under the action of negative pressure and is connected with a circuit, the circuit can be switched on, and an alarm function is realized through the alarm; the device is simple and reliable in structure, low in cost and suitable for the seaplane with the buoy, alarming is conducted on ponding of the buoy, potential safety hazards of takeoff are eliminated, and a powerful guarantee is provided for safe takeoff of the seaplane.

Description

Technical Field

[0001] The invention relates to the technical field of aviation equipment, and in particular to a water accumulation alarm device for a seaplane buoy. Background Art

[0002] When a seaplane takes off and lands and operates on the water, the floats, as a key component that provides buoyancy, may accumulate water inside for various reasons. The pilot usually judges the water level and turns on the drainage pump to drain the water. If the water inside the floats is not drained in time, the accumulated water will affect the weight and center of gravity of the entire aircraft, posing a huge safety hazard to takeoff.

[0003] Therefore, developing a low-cost, simple and practical seaplane buoy water accumulation alarm device has become a problem that people are eager to solve. Summary of the invention

[0004] The purpose of the present invention is to provide a water accumulation alarm device for a seaplane buoy, so as to alarm when too much water accumulates in the buoy of the seaplane and is not discharged in time, so as to remind the pilot to actively drain the water, thereby providing a strong guarantee for the safe take-off of the aircraft.

[0005] To achieve the above object, the present invention provides the following technical solution: a water accumulation alarm device for a seaplane buoy, comprising a buoy and a water cup, and also comprising an alarm triggering structure;

[0006] The alarm trigger structure is arranged inside the buoy; the alarm trigger structure comprises: a U-shaped tube, a venturi tube, a rubber film, a puncture structure, a closed cavity and an alarm;

[0007] The left end of the U-shaped tube extends into the water cup, and the right end thereof is sealed with a rubber film; the left end of the U-shaped tube is lower than the right end thereof, and the inside of the U-shaped tube is filled with water. When the rubber film is punctured and the structure is broken, the water in the float is sucked from the left end of the U-shaped tube through the siphon principle, and flows out from the right end of the U-shaped tube into the water cup;

[0008] The puncture structure is arranged on the right end of the U-shaped tube, below the rubber film;

[0009] The venturi tube is a tubular structure with a branch, and has three ports in total. The middle part of the venturi tube is arranged inside the U-shaped tube, the upper left port of the venturi tube is connected to the closed cavity, the lower left port of the venturi tube extends into the position of the thin section at the left end of the U-shaped tube close to the lower part of the annular plug, and the right port of the venturi tube penetrates the U-shaped tube outward and is connected to the external air;

[0010] A thin copper sheet is arranged on the upper part of the sealed cavity; a first contact and a second contact are arranged at the lower position inside the sealed cavity; when the thin copper sheet moves downward and contacts with the first contact and the second contact, the circuit can be connected to make the alarm work.

[0011] Furthermore, it also includes an annular plug and a spring, wherein the annular plug is arranged at the left port position of the U-shaped tube to control the inflow and outflow of water; the upper end of the spring is connected to the annular plug to provide a reaction force for the annular plug; when the water level in the float changes, the annular plug moves due to the water flow pressure, and the spring expands and contracts according to the movement of the annular plug.

[0012] Furthermore, the puncture structure includes a float and a guide needle;

[0013] The rubber film is a soft circular film fixed to the right end of the U-shaped tube;

[0014] The float is a spherical structure filled with air and placed in a buoy;

[0015] The guide needle is fixed on the upper part of the float; when the float rises to a certain height, the guide needle pierces the rubber film.

[0016] Furthermore, a base is provided at an upper position inside the enclosed cavity, and a thin copper sheet is fixed on the base and sealed with the base; the thin copper sheet bends upward when not working, and when affected by the venturi tube and negative pressure appears inside the enclosed cavity, the thin copper sheet bends and deforms downward, and closes downward on the first contact and the second contact, forming a closed circuit, thereby triggering an alarm signal.

[0017] Furthermore, a contraction portion is provided at the lower left port of the U-shaped tube; the inner diameter of the contraction portion is smaller than the inner diameter of the U-shaped tube; the lower left port of the Venturi tube is connected to the contraction portion; when liquid flows through, the flow rate increases and the pressure decreases, thereby generating a negative pressure environment in the Venturi tube, attracting the thin copper sheet to move toward the first contact and the second contact.

[0018] Beneficial Effects

[0019] The invention provides a water accumulation alarm device for a seaplane buoy, which has a simple and reliable structure and low cost, is suitable for seaplanes with buoys, can monitor the water accumulation in the buoys and issue an alarm, thereby eliminating the potential safety hazard caused by the change of the center of gravity of the aircraft due to the pilot's failure to discharge the water accumulated in the buoys in time, and provides a strong guarantee for the safe take-off of the seaplane. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a structural diagram of the present invention;

[0022] Figure 2 This is a partial structural diagram of the practical buoy.

[0023] In the figure:

[0024] 1-water pump; 2-buoy; 3-U-shaped tube; 4-rubber film; 5-float; 6-guide pin; 7-first contact; 8-second contact; 9-thin copper sheet; 10-sealed cavity; 11-Venturi tube; 12-annular plug; 13-spring; 14-warning water level line; 15-auxiliary water level line; 16-water cup. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] To achieve the above object, the present invention provides the following technical solutions: Figure 1-2 As shown, a water accumulation alarm device for a seaplane buoy includes a buoy 2, an alarm triggering structure and a water cup 16;

[0027] The buoy 2 is in the shape of an elongated cylinder, with a streamlined exterior, used to provide buoyancy to support the seaplane, and an alarm trigger structure is provided inside;

[0028] The alarm triggering structure includes a U-shaped tube 3, a venturi tube 11, a rubber film 4, a puncture structure, a closed cavity 10 and an alarm;

[0029] The U-shaped tube 3 is set in an inverted U shape, the left end of the U-shaped tube 3 extends into the water cup 16, and the right end thereof is sealed with a rubber film 4; the left end of the U-shaped tube 3 is lower than the right end thereof, and in the normal state of the device, the space between the rubber film 4 and the annular plug 12 in the U-shaped tube 3 is filled with water, and the inside of the venturi tube 11 is in an air circulation state. The right end of the venturi tube 11 (i.e., the position of the warning water level line 14) and the rubber film 4 (i.e., the position of the auxiliary water level line 15) can be set according to the specific take-off weight requirements of different types of seaplanes.

[0030] When the rubber film 4 is punctured and the structure is broken, the water in the float 2 is sucked from the left end of the U-shaped tube 3 through the siphon principle, and flows out from the right end of the U-shaped tube 3 into the water cup 16;

[0031] The venturi tube 11 is a tubular structure with a branch. The venturi tube 11 has three ports in total. The middle part of the venturi tube 11 is arranged inside the U-shaped tube. The upper left port of the venturi tube 11 is connected to the closed cavity 10. The lower left port of the venturi tube 11 extends into the position of the thin section of the left end of the U-shaped tube 3 close to the lower part of the annular plug 12. The right port of the venturi tube 11 penetrates the U-shaped tube 3 outward and is connected to the external air. Specifically, the diameter of the right port of the venturi tube 11 is 2.5 mm, and a 2.5 mm small hole is arranged on the outer wall of the corresponding U-shaped tube 3.

[0032] The enclosed cavity 10 is a closed container, and a thin copper sheet 9 is arranged on the upper part of the enclosed cavity 10; a first contact 7 and a second contact 8 are arranged at a lower position inside the enclosed cavity 10; the first contact and the second contact are the open circuit positions of the circuit, and when the thin copper sheet 9 moves downward and connects with the first contact 7 and the second contact 8, the circuit can be connected to make the alarm work.

[0033] The water cup 16 is in the shape of a container and is used to collect the accumulated water discharged from the U-shaped tube 3 .

[0034] Furthermore, it also includes an annular plug 12 and a spring 13. The annular plug 12 is arranged at the left port of the U-shaped tube 3 to control the water flow in and out. The upper end of the spring 13 is connected to the annular plug 12 to provide a reaction force for the annular plug 12. When the water level in the buoy 2 changes, the annular plug 12 moves under the pressure of the water flow, and the spring 13 expands and contracts according to the movement of the annular plug 12.

[0035] Furthermore, the piercing structure includes a float 5 and a guide needle 6;

[0036] The rubber film 4 is a soft circular film fixed to the right end of the U-shaped tube 3;

[0037] The right end of the U-shaped tube 3 is a hollow pipe, and a slidable float 5 is installed on the right end; the float 5 is a spherical structure, filled with air, and placed in the buoy 2, and is used to rise as the water level in the buoy rises;

[0038] The guide pin 6 is a slender metal rod with a sharp top, and is fixed on the upper part of the float 5; when the float 5 rises to a certain height, it punctures the rubber film 4 and triggers an alarm.

[0039] Furthermore, a base is provided at an upper position inside the closed cavity 10, and a thin copper sheet 9 is fixed on the base and sealed with the base; the thin copper sheet 9 bends upward when not working, and when affected by the venturi tube 11 and negative pressure appears inside the closed cavity 10, the thin copper sheet 9 will deform downward and close downward on the first contact 7 and the second contact 8, forming a closed circuit and triggering an alarm signal.

[0040] In another embodiment, the top wall of the closed cavity 10 is made of a deformable material, such as a plastic film, and a thin copper sheet 9 is fixed on the plastic film. When negative pressure appears inside the closed cavity 10 due to the influence of the venturi tube 11, the plastic film will deform downward, and the thin copper sheet 9 will move downward with the plastic film, and finally close on the first contact 7 and the second contact 8, forming a closed circuit, triggering the alarm to work and alert the driver.

[0041] The closed container structure of the closed cavity 10 can protect the first contact 7, the second contact 8 and the thin copper sheet 9 inside from being affected by the external environment, thereby ensuring the normal operation of the circuit.

[0042] Furthermore, a contraction portion is provided at the lower left port of the U-shaped tube 3; the inner diameter of the contraction portion is smaller than the inner diameter of the U-shaped tube 3; the lower left port of the venturi tube 11 is connected to the contraction portion; when liquid flows through, the flow rate increases and the pressure decreases, thereby generating a negative pressure environment in the venturi tube 11, and then generating a negative pressure environment in the closed cavity 10; the thin copper sheet 9 is attracted to move toward the first contact 7 and the second contact 8, triggering the alarm mechanism.

[0043] The water accumulation alarm device for seaplane buoy provided by the present invention can reliably monitor the water accumulation in the buoy and issue an alarm in time through the coordinated work of various components. The device has a simple structure, is easy to install and maintain, has high practical value and application prospects, and is of great significance for improving the flight safety of seaplanes.

[0044] Here’s how it works:

[0045] When there is no water or less water in the buoy 2, the float is at a lower position, the guide pin 6 will not pierce the rubber film 4, the circuit in the closed cavity 10 is in a disconnected state, and no alarm signal is generated.

[0046] As the water in the buoy 2 gradually increases, the water level begins to rise. Since the float 5 will rise with the water level; when the water level reaches the auxiliary water level line 15, the rubber film 4 will be punctured by the guide needle 6. After the rubber film 4 is punctured, the device enters the pre-alarm state. Under the action of the siphon principle, the water in the U-shaped tube 3 pushes the annular plug 12 and flows downward into the water cup 16. Since a contraction portion is provided at the lower part of the left end of the U-shaped tube 3, under the action of the Venturi effect, when the water flows through the contraction portion, the inner diameter is reduced, and the flow rate here will increase, so that the negative pressure inside the Venturi tube 11 increases, and the right side port of the right end Venturi 11 continuously inhales air to relieve the negative pressure in the tube and the closed cavity 10. At this time, the negative pressure in the closed cavity 10 is not large, and the thin copper sheet 9 will not close at the first contact 7 and the second contact 8.

[0047] If the pilot still fails to drain the accumulated water in time, when the water level inside the buoy 2 reaches the warning water level 14, the right port of the venturi tube 11 is submerged, and air cannot be inhaled to relieve the negative pressure inside the closed cavity 10, resulting in an increase in the negative pressure inside the closed cavity 10. The thin copper sheet 9 moves downward under the action of the negative pressure, connecting the circuit, and the alarm starts to work, lighting up the indicator light on the aircraft instrument panel and sounding an alarm to remind the pilot to actively start the water pump 1 to drain water to ensure the safe take-off of the aircraft.

[0048] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A water accumulation alarm device for a seaplane buoy, comprising a buoy (2) and a water cup (16), characterized in that: Also includes an alarm triggering structure; The alarm trigger structure is arranged inside the buoy (2); the alarm trigger structure comprises: a U-shaped tube (3), a venturi tube (11), a rubber film (4), a puncturing structure, a closed cavity (10) and an alarm; The left end of the U-shaped tube (3) extends into the water cup (16), and the right end thereof is sealed with a rubber film (4); the left end of the U-shaped tube (3) is lower than the right end thereof, and the inside of the U-shaped tube (3) is filled with water. When the rubber film (4) is punctured and the structure is broken, the water in the float (2) is sucked in from the left end of the U-shaped tube (3) through the siphon principle, and flows out from the right end of the U-shaped tube (3) into the water cup (16); The puncture structure is arranged on the right end of the U-shaped tube (3) and is located below the rubber film (4); The venturi tube (11) is a tubular structure with a branch. The venturi tube (11) has three ports in total. The middle part of the venturi tube (11) is arranged inside the U-shaped tube. The upper left port of the venturi tube (11) is connected to the closed cavity (10). The lower left port of the venturi tube (11) extends into the position of the thin section at the left end of the U-shaped tube (3) close to the lower part of the annular plug (12). The right port of the venturi tube (11) penetrates the U-shaped tube (3) outward and is connected to the external air. A thin copper sheet (9) is arranged on the upper part of the sealed cavity (10); a first contact (7) and a second contact (8) are arranged at a lower position inside the sealed cavity (10); when the thin copper sheet (9) moves downward and contacts the first contact (7) and the second contact (8), the circuit can be connected, so that the alarm works.

2. The seaplane buoy water accumulation alarm device according to claim 1, characterized in that: It also includes an annular plug (12) and a spring (13), wherein the annular plug (12) is arranged at the left port of the U-shaped tube (3) and is used to control the inflow and outflow of water; the upper end of the spring (13) is connected to the annular plug (12) and is used to provide a reaction force for the annular plug (12); when the water level in the buoy (2) changes, the annular plug (12) moves under the pressure of the water flow, and the spring (13) expands and contracts according to the movement of the annular plug (12).

3. The seaplane buoy water accumulation alarm device according to claim 1, characterized in that: The puncture structure comprises a float (5) and a guide needle (6); The rubber film (4) is a soft circular film fixed to the right end of the U-shaped tube (3); The float (5) is a spherical structure filled with air and is placed inside the buoy (2); The guide needle (6) is fixed on the upper part of the float (5); when the float (5) rises to a certain height, the guide needle (6) pierces the rubber film (4).

4. The seaplane buoy water accumulation alarm device according to claim 1, characterized in that: A base is provided at an upper position inside the sealed cavity (10), and a thin copper sheet (9) is fixed on the base and sealedly connected to the base; the thin copper sheet (9) bends upward when not in operation, and when negative pressure appears inside the sealed cavity (10) due to the influence of the venturi tube (11), the thin copper sheet (9) bends downward and deforms, and closes downward on the first contact (7) and the second contact (8), thereby forming a closed circuit and triggering an alarm signal.

5. The seaplane buoy water accumulation alarm device according to claim 1, characterized in that: The lower left port of the U-shaped tube (3) is provided with a contraction portion; the inner diameter of the contraction portion is smaller than the inner diameter of the U-shaped tube (3); the lower left port of the Venturi tube (11) is connected to the contraction portion; when liquid flows through, the flow rate increases and the pressure decreases, thereby generating a negative pressure environment in the Venturi tube (11), attracting the thin copper sheet (9) to move toward the first contact point (7) and the second contact point (8).

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