Negative pressure flow guide ejector for fuel tank area of ground effect wing ship
阅读说明：本技术 一种地效翼船燃油箱区域负压导流引射器 (Negative pressure flow guide ejector for fuel tank area of ground effect wing ship ) 是由 邓国文 张丽柯 于 2020-06-03 设计创作，主要内容包括：本发明涉及地效翼船技术领域,公开了一种地效翼船燃油箱区域负压导流引射器,包括：安装在地效翼船左右机翼后缘的导流管,导流管的前端伸入机翼密封舱中,后端出口伸出机翼外侧；第一单向活门,设置在地效翼船的客舱与机翼密封舱之间,客舱中的废气通过第一单向活门进入机翼密封舱；在地效翼船处于飞行状态时,导流管出口产生的负压使第一单向活门打开,形成了由客舱至机翼密封舱并通过导流管出气的负压引流气路,将客舱中的废气、机翼密封舱中燃油箱底部的油和水排出机翼外侧。通过第一单向活门实现了客舱的换气功能,且避免了机翼密封舱中油、气、水向客舱中回流。通过将客舱中的气体引入机翼密封舱,为燃油箱通风散热,本发明通风散热性好。(The invention relates to the technical field of WIG craft, and discloses a negative pressure diversion ejector in the area of a fuel tank of the WIG craft, which comprises: the flow guide pipes are arranged at the rear edges of the left wing and the right wing of the ground effect wing ship, the front ends of the flow guide pipes extend into the wing sealed cabin, and the outlets at the rear ends extend out of the outer sides of the wings; the first one-way valve is arranged between a cabin and a wing sealed cabin of the ground effect ship, and waste gas in the cabin enters the wing sealed cabin through the first one-way valve; when the ground effect ship is in a flying state, the first one-way valve is opened by negative pressure generated by the outlet of the flow guide pipe, a negative pressure flow guide gas path which is formed from the passenger cabin to the wing sealed cabin and discharges gas through the flow guide pipe is formed, and waste gas in the passenger cabin, oil and water at the bottom of a fuel tank in the wing sealed cabin are discharged out of the outer side of the wing. The ventilation function of the passenger cabin is realized through the first one-way valve, and the backflow of oil, gas and water in the wing sealed cabin to the passenger cabin is avoided. The gas in the passenger cabin is introduced into the wing sealed cabin to ventilate and radiate the fuel tank, so that the invention has good ventilation and radiation performance.)
1. The utility model provides a regional negative pressure water conservancy diversion ejector of ground effect wing ship fuel tank which characterized in that includes:
the guide pipe is arranged at the rear edges of the left wing and the right wing of the ground effect craft, a fuel tank is arranged in the wing sealed cabin, the front end of the guide pipe extends into the wing sealed cabin, and the outlet at the rear end extends out of the outer side of the wing;
the first check valve is arranged in the air bleed port, and waste gas in the cabin enters the wing sealed cabin through the first check valve;
when the ground effect ship is in a flying state, negative pressure generated at the outlet of the flow guide pipe forms air flow to open the first one-way valve, a negative pressure flow guide air passage which is formed from the passenger cabin to the wing sealed cabin and discharges air through the flow guide pipe is formed, and waste gas in the passenger cabin, oil and water at the bottom of a fuel tank in the wing sealed cabin are discharged out of the wing.
2. The WIG craft fuel tank zone negative pressure diversion ejector of claim 1, wherein: and a second one-way valve is arranged at the front end of the flow guide pipe, and gas in the wing sealed cabin enters the flow guide pipe through the second one-way valve.
3. The WIG craft fuel tank zone negative pressure diversion ejector of claim 1, wherein: the honeycomb duct passes through clamp fixed mounting inside the wing.
4. The WIG craft fuel tank zone negative pressure diversion ejector of claim 1, wherein: the fuel tank is arranged at the position, close to the wing root, of the front edge of the wing sealed cabin.
5. The WIG craft fuel tank zone negative pressure diversion ejector of claim 1, wherein: two fuel tanks are respectively installed in the left wing sealed cabin and the right wing sealed cabin and are connected in series.
Technical Field
The invention relates to the technical field of WIG craft, in particular to a negative pressure diversion ejector in a fuel tank area of the WIG craft.
Background
The existing WIG craft has 4 fuel tanks respectively installed in the middle of the wing root at the front edge of the left and right inner wings, the left and right inner wings are respectively provided with a filler cap, the WIG craft wings are totally closed, and because the WIG craft flies on water, no ventilation holes are allowed outside the wings.
However, the fuel tanks are all installed in a sealed cabin of the wing, the fuel tanks are provided with an oil filling pipe and an oil conveying pipe, rich oil and oil gas which flow back from an engine return to the fuel tanks through oil return pipes, and fuel guide pipes in the fuel tanks are in cross connection.
Based on the installation structure of the existing fuel tank, if the fuel conduit has the phenomenon of oil leakage or oil leakage, because the wing is closed, the leaked oil can only flow into the passenger cabin, so that the environment of the passenger cabin is polluted, and the risk of causing fire is caused.
In the process of refueling a fuel tank of a ground effect wing ship, if oil is filled, the oil is overflowed out of a refueling port and flows to the bottom of the fuel tank, 5 surfaces of the fuel tank are closed, and the joint of 1 fuel tank surface and a fuselage is not closed, so the overflowed oil only flows into a passenger cabin from a part close to the wing root of the fuselage, and once a fire disaster is caused, the result is unreasonable.
Disclosure of Invention
The invention provides a negative pressure flow guide ejector for a fuel tank area of a ground effect wing ship, which solves the technical problem that oil gas in wings of the ground effect wing ship flows back to a passenger cabin in the prior art.
The technical scheme of the invention is realized as follows: a WIG craft fuel tank zone negative pressure diversion ejector includes:
the guide pipe is arranged at the rear edges of the left wing and the right wing of the ground effect craft, a fuel tank is arranged in the wing sealed cabin, the front end of the guide pipe extends into the wing sealed cabin, and the outlet at the rear end extends out of the outer side of the wing;
the first check valve is arranged in the air bleed port, and waste gas in the cabin enters the wing sealed cabin through the first check valve;
when the ground effect ship is in a flying state, negative pressure generated by the outlet of the flow guide pipe forms air flow to open the first one-way valve, a negative pressure drainage air passage which is formed from the passenger cabin to the wing sealed cabin and discharges air through the flow guide pipe is formed, and waste gas in the passenger cabin, oil and water at the bottom of a fuel tank in the wing sealed cabin are discharged out of the wing.
As a preferable technical scheme, a second check valve is installed at the front end of the flow guide pipe, and gas in the wing sealed cabin enters the flow guide pipe through the second check valve.
As a preferable technical scheme, the draft tube is fixedly installed inside the wing through a clamp.
Preferably, the fuel tank is installed at the position of the leading edge of the wing sealed cabin close to the wing root.
As a preferred technical scheme, two fuel tanks are respectively installed in the left wing sealed cabin and the right wing sealed cabin and are connected in series.
The invention has the beneficial effects that: the invention utilizes the principle of negative pressure generated outside a wing ship when a ground effect wing ship flies, a first one-way valve is arranged between a cabin and a wing sealed cabin, and a flow guide pipe is arranged at the rear edge of the wing.
The ventilation function of the passenger cabin is realized through the first one-way valve, and the backflow of oil, gas and water in the wing sealed cabin to the passenger cabin is avoided.
The gas in the passenger cabin is introduced into the wing sealed cabin to ventilate and radiate the fuel tank, so that the invention has good ventilation and radiation performance.
The second one-way valve is arranged on the flow guide pipe, water, oil and gas in the wing sealed cabin are guided to the outside of the wing through the second one-way valve, and external gas cannot enter the wing sealed cabin through the flow guide pipe.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of an installation structure of an embodiment of the present invention;
fig. 2 is a schematic structural view of a draft tube in an embodiment of the invention.
In the figure: 1-passenger cabin; 2-an airfoil; 3-a fuel tank; 4-a first one-way valve; 5-a flow guide pipe; 51-an air inlet pipe; 52-second check valve; 53-outlet duct.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments, and the description of the embodiments is provided to help understanding of the present invention, but not to limit the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 and 2, the compartment in which the fuel tank is installed according to the WIG craft inspection guidelines 4.3.2.2 should be provided with vents and weep holes to prevent the accumulation of flammable liquids or vapors. The invention relates to a negative pressure flow guide ejector for a fuel tank area of a ground effect wing ship, which comprises:
the draft tube 5 is installed at the rear edges of the left wing 2 and the right wing 2 of the ground effect craft, the fuel tank 3 is arranged in the wing sealed cabin, the front end of the draft tube 5 extends into the wing sealed cabin, and the outlet at the rear end extends out of the outer side of the wing 2;
first check valve 4 is equipped with the bleed port between the cabin 1 of ground effect ship and the wing sealed cabin, and first check valve 4 is installed in the bleed port, and the waste gas in the cabin 1 gets into the wing sealed cabin through first check valve 4.
When the WIG craft is in a flying state, negative pressure generated at the outlet of the draft tube 5 forms air flow to open the first check valve 4, a negative pressure drainage air path which is from the passenger cabin 1 to the wing sealed cabin and is exhausted through the draft tube 5 is formed, and waste gas in the passenger cabin 1, oil at the bottom of the fuel tank 3 in the wing sealed cabin and water are exhausted out of the wing.
The draft tube 5 comprises an
In this embodiment, the duct 5 is fixedly installed inside the wing 2 by a clip.
The fuel tanks 3 are arranged at the front edge of the wing sealed cabin close to the wing root, two fuel tanks 3 are respectively arranged in the left wing sealed cabin and the right wing sealed cabin, and the two fuel tanks 3 are connected in series.
The principle of the invention is as follows:
when the ground effect wing ship is in a stop state, the negative pressure diversion ejector does not act.
When the ground effect wing ship is in a stop state, the pressure flow guide ejector acts as follows:
the invention utilizes the ground effect flight speed of the wing ship, the higher the flight speed is, the larger the negative pressure generated at the outlet of the negative pressure diversion ejector is, the negative pressure of the ejection power of the negative pressure diversion ejector is increased (namely, the larger the external suction force is), and the impurities such as water, oil and the like in the wing are ejected to the outside of the wing through the negative pressure diversion ejector.
A50-millimeter air-entraining port is arranged at the joint of the wing ship cabin and the inner wing of the wing, air introduced from the cabin passes through the front oil tank and then the rear oil tank to ventilate and dissipate heat of 2 oil tanks in the front and the rear, and then hot air on the outer surface of the oil tank is ejected to the outside of the wing through a negative pressure flow-guiding ejector.
The invention can also guide the waste gas in the passenger cabin to the oil tank for heat dissipation and then discharge the waste gas to the outside of the wing during operation, thereby realizing the ventilation function of the cockpit and the passenger cabin.
The negative pressure flow guide ejector only can discharge air outwards, but cannot discharge air, water and the like inwards, and can discharge sundries such as oil, water and the like at the bottom of the wing fuel tank to the outside of the wing through the negative pressure flow guide ejector, so that the problem of unsmooth oil and gas discharge in a wing sealed cabin is avoided, and the risk of fire is reduced.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
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