Oil storage tank for ship jet fuel system test

Abstract

The oil storage tank for the ship jet fuel system test comprises a liquid speed reduction cavity formed in an oil port in the lower end of the oil storage tank, a flow distribution plate and a flow guide plate are arranged in the liquid speed reduction cavity, the flow distribution plate is an arc-shaped plate bent towards the circle center of a vertical curve, and the flow guide plate is arranged above the flow distribution plate and bent towards the flow distribution plate. A vertical connector of the liquid deceleration cavity is connected with an oil port below the oil storage tank and connected with a main pipe for conveying jet fuel, the main pipe is connected with an oil filling pipe and an oil drainage pipe, a main valve is arranged on the main pipe, an oil filling valve is arranged on the oil filling pipe, and an oil drainage valve is arranged on the oil drainage pipe. According to the oil storage tank for the ship jet fuel system test, the impact of jet fuel on the oil storage tank is reduced, the stability of the oil storage tank is improved, the working state is switched only through switching of the states of all the valves in the oil filling or discharging process, oil pipe switching is not needed in the whole process, and operation is easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of shipbuilding, especially to a kind of oil tank for testing ship jet fuel system. BACKGROUND

[0002] As described in Chinese patent CN114738527 a kind of jet fuel cabin high-speed breather valve and air passage system for ship and CN210364429 a kind of polar ship helicopter jet fuel filling system, to meet various needs certain warships are equipped with aircraft, and jet fuel system is provided on the warship to provide fuel gas for aircraft. Jet fuel has the characteristics of low flash point, strong permeability, flammable and explosive, and jet fuel system test has high risk. Before the warship is delivered to the ship owner, jet fuel needs to be tested strictly in accordance with safety specifications. The performance of the warship jet system needs to be detected. Usually, an oil tank is provided on the warship to simulate the fuel tank of the aircraft during the test of the warship jet fuel system. The performance and characteristics of the oil tank determine the safety of the jet fuel system test to some extent.

[0003] The conventional oil tank for testing warship jet fuel system is shown in the accompanying drawings Figure 1 The structure is simple, and basically meets the needs of jet system test, but the operation is complex, and there is a high risk. The main risks include: (1) the oil filling and oil discharge share a quick connector, and the switching between different working conditions needs to be manually changed. The operation is complex, and jet fuel may leak from the pipe. (2) Because the pressure of the oil filling pipe is high during pressure oil filling, the tank body will be shaken when the jet fuel enters the tank body, and the tank body has the risk of overturning. (3) During the oil filling process, the test personnel need to pay attention to the liquid level of the magnetic flap liquid level meter at all times. When the liquid level is high, the operator in the control room is notified in time to stop the pump and stop the oil filling. There is a time difference in this process. Because the movable oil tank has a small capacity, and the pressure and flow of jet fuel in the oil filling pipe are large, the oil tank may be filled with jet fuel during the time difference, causing overflow. The jet fuel is directly sprayed from the breather pipe and leaks onto the deck, causing a great safety hazard. UTILITY MODEL CONTENTS

[0004] In view of the defects in the prior art, the present application provides an oil tank for testing warship jet fuel system to solve the technical problems of high overturning risk, time difference in stopping the pump and jet fuel leakage onto the deck in the prior art.

[0005] In order to achieve the above-mentioned utility model purposes, the technical solutions provided by the utility model are as follows:

[0006] The application discloses a kind of ship jet fuel system test oil storage tank, including being arranged in the liquid speed reduction chamber of oil storage tank lower end oil port, vertical bend is arranged in liquid speed reduction chamber, vertical bend is arranged in the liquid speed reduction chamber of the flow splitter and the flow guide plate of flow splitter, the flow splitter is the arc-shaped plate that is curved towards the center of vertical bend, the flow guide plate is arranged in the upper side of flow splitter and is curved towards flow splitter, the vertical interface of liquid speed reduction chamber is connected with the oil port below oil storage tank, the vertical interface of liquid speed reduction chamber is connected with the main pipe of conveying jet fuel, the other end of main pipe is connected with total valve, the other end of total valve is connected with oil filling pipe, the other end of oil filling pipe is connected with oil filling valve, the other end of oil filling valve is connected with oil filling joint, and the oil filling joint is used to be connected with the oil filling pipe of oil filling station, one end of oil drain pipe is connected with the other end of total valve, the other end of oil drain pipe is connected with oil drain valve, the other end of oil drain valve is connected with oil drain joint, and the oil drain joint is used to be connected with the oil drain pipe of oil filling station.

[0007] In an embodiment, the thickness of the flow splitter gradually increases along the height.

[0008] In an embodiment, the lower side of the oil storage tank is provided with an oil tank, the oil tank is fixed on the ship, the oil storage tank is fixed in the oil tank, the side bottom of the oil tank is provided with a drain pipe, and the drain valve is arranged on the drain pipe.

[0009] In an embodiment, the upper end of the oil storage tank is provided with a manhole cover, the air overflow pipe is arranged on the manhole cover, the air overflow valve is arranged on the air overflow pipe, and the outlet of the air overflow pipe is directed to the oil tank.

[0010] In an embodiment, the side of the oil storage tank is provided with a liquid level meter communicated with the oil storage tank.

[0011] In an embodiment, the high liquid level float switch is arranged at the first height on the upper side of the liquid level meter, the high high liquid level float switch is arranged at the second height on the upper side of the liquid level meter, the second height is greater than the first height, the high liquid level float switch and the high high liquid level float switch are electrically connected with the control system of the jet fuel system, when the fuel in the liquid level meter reaches the first height, the high liquid level float switch sends a signal to the control system, the control system issues an alarm to prompt that the oil amount is high and needs to be warned and stopped in time, when the fuel in the liquid level meter reaches the second height, the high high liquid level float switch sends a signal to the control system, and the control system will automatically stop the pump to stop the oil filling.

[0012] In an embodiment, the lower end of the liquid level meter is provided with a thermometer, and the upper end of the liquid level meter is provided with a pressure gauge.

[0013] In an embodiment, the top of the oil storage tank is symmetrically provided with lifting lugs.

[0014] Compared with the prior art, the application has at least the following beneficial effects:

[0015] The liquid speed reduction cavity is arranged at the lower end of the oil tank, high-speed and high-pressure fuel is divided by the flow dividing plate and guided by the flow guiding plate in the liquid speed reduction cavity, kinetic energy of the high-speed and high-pressure fuel is converted into acoustic energy and internal energy, the flow rate of the jet fuel into the oil tank is greatly reduced, the impact of the jet fuel on the oil tank is greatly reduced, and the stability of the oil tank is greatly increased.

[0016] The manifold is connected with the oil filling pipe and the oil discharge pipe respectively, the total valve is arranged on the manifold, the oil filling valve is arranged on the oil filling pipe, and the oil discharge valve is arranged on the oil discharge pipe, only the switching of the valve states is needed during the oil filling or discharging process, so that the switching of the working states is realized, and the oil pipes do not need to be switched throughout the process, and the operation is simple.

[0017] The high liquid level float switch and the high high liquid level float switch are electrically connected with the control system of the jet fuel system and arranged on the liquid level meter, the alarm and the pump stop of the oil filling process can be automatically realized, and the oil tank is arranged below the oil tank, and the overflow jet fuel can be recycled, and the safety hidden danger caused by the jet fuel leakage is eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic structural diagram of an existing ship jet fuel system test oil tank;

[0019] Figure 2 is a schematic structural diagram of a ship jet fuel system test oil tank in the embodiment of the application;

[0020] Figure 3 is a schematic structural diagram of a liquid speed reduction cavity in the embodiment of the application;

[0021] Figure 4 is a schematic diagram of the flow of jet fuel in the liquid speed reduction cavity in the embodiment of the application.

[0022] The drawings show that: 1, a relief valve; 2, an oil tank; 3, a liquid speed reduction cavity; 301, a flow dividing plate; 302, a flow guiding plate

[0023] 4, a total valve; 401, a manifold; 5, an oil filling valve; 501, an oil filling pipe; 6, an oil discharge valve; 601, an oil discharge pipe; 7, an oil filling connector; 8, an oil discharge connector; 9, a temperature table; 10, a liquid level meter; 11, a high liquid level float switch; 12, a high liquid level float switch; 13, a pressure table; 14, a lifting lug; 15, a manhole cover; 16, a breather overflow valve; 1601, a breather overflow pipe; 17, an oil tank. DETAILED DESCRIPTION

[0024] For the purposes of the present application, the technical solutions and advantages are more clear and apparent, the following specific embodiments shown in the drawings will be described. However, it should be understood that these descriptions are only exemplary, and are not intended to limit the scope of the present application. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the present application.

[0025] The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used in the present disclosure and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0026] It should be understood that, although the terms first, second, third, etc. can be employed in this disclosure to describe various information, these information should not be limited to these terms, and should not be understood as indicating or implying relative importance. These terms are only used to distinguish one type of information from another type of information. For example, without departing from the scope of the present disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon" or "in response to determining".

[0027] In the description of the present application, unless otherwise specified and limited, it is necessary to explain that the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be mechanical connection, or the communication between two elements, it can be directly connected, or indirectly connected through intermediate medium, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] In order to better understand the technical scheme of the present application, the present application will be described in detail below in combination with the drawings.

[0029] As Figure 2 The utility model discloses a kind of oil storage tanks 17 for warship jet fuel system test, including the liquid deceleration chamber 3 of being arranged in the lower end oil port of oil storage tank 17, as Figure 3As shown, the liquid deceleration cavity 3 is provided with a vertical bend, the vertical interface of the liquid deceleration cavity 3 is connected with the oil port below the oil tank 17, the vertical interface of the liquid deceleration cavity 3 is connected with the total pipe 401 for conveying jet fuel, the vertical bend of the liquid deceleration cavity 3 is provided with a flow distribution plate 301 and a flow guide plate 302, the flow distribution plate 301 is an arc-shaped plate curved towards the center of the vertical bend, the flow guide plate 302 is arranged above the flow distribution plate 301 and curved towards the flow distribution plate 301, the other end of the total pipe 401 is connected with the total valve 4, the other end of the total valve 4 is connected with the oil filling pipe 501, the other end of the oil filling pipe 501 is connected with the oil filling valve 5, the other end of the oil filling valve 5 is connected with the oil filling connector 7, the oil filling connector 7 is used for connecting with the oil filling pipe of the oil station, one end of the oil discharge pipe 601 is connected with the other end of the total valve 4, the other end of the oil discharge pipe 601 is connected with the oil discharge valve 6, the other end of the oil discharge valve 6 is connected with the oil discharge connector 8, and the oil discharge connector 8 is used for connecting with the oil discharge pipe of the oil station.

[0030] As shown, the thickness of the flow distribution plate 301 gradually increases along the height in the embodiment, so that the jet fuel is better distributed. Figure 3

[0031] The oil tank 17 is arranged below the oil tank 2, the oil tank 2 is fixed on the ship, the oil tank 17 is fixed in the oil tank 2, the upper end of the oil tank 17 is provided with a manhole cover 15, the manhole cover 15 is provided with a gas overflow pipe 1601, the gas overflow pipe 1601 is provided with a gas overflow valve 16, and the outlet of the gas overflow pipe 1601 is directed to the oil tank 2, so that the overflow fuel flows into the oil tank 2, so as to avoid the overflow fuel from leaking onto the deck to cause safety hazards. The bottom of the side of the oil tank 2 is provided with a discharge pipe, and the discharge pipe is provided with a discharge valve 1.

[0032] The side of the oil tank 17 is provided with a liquid level gauge 10 communicated with the oil tank 17, a high liquid level float switch 11 is arranged at the first height on the upper side of the liquid level gauge 10, and a high high liquid level float switch 12 is arranged at the second height on the upper side of the liquid level gauge 10, the second height is greater than the first height, and the high liquid level float switch 11 and the high high liquid level float switch 12 are electrically connected with the control system of the jet fuel system. When the fuel in the liquid level gauge 10 reaches the first height, the high liquid level float switch 11 sends a signal to the control system, the control system issues an alarm, prompts that the oil quantity is high, needs to be warned and stops refueling in time, and when the fuel in the liquid level gauge 10 reaches the second height, the high high liquid level float switch 12 sends a signal to the control system, and the control system will immediately stop the pump and stop refueling. In the embodiment, the liquid level gauge 10 is a magnetic flap liquid level gauge.

[0033] In order to measure the temperature and pressure of the oil tank 17, a thermometer 9 is arranged at the lower end of the liquid level gauge 10, and a pressure gauge 13 is arranged at the upper end of the liquid level gauge 10. In order to facilitate lifting the oil tank 17, lifting lugs 14 are symmetrically arranged on the top of the oil tank 17. ​

[0034] The working principle of the oil tank for testing the ship jet fuel system in the present application is shown as follows.

[0035] Before refueling: open the breather overflow valve 16, close the drain valve, connect the fuel pipe and the drain pipe from the refueling station through the refueling joint 7 and the drain joint 8, open the total valve 4 and the refueling valve 5, and close the drain valve 6; input the high liquid level float switch 11 and the high-high liquid level float switch 12 as switch values through the temporary cable into the jet fuel control system, the high liquid level float switch 11 is used for alarm, and the high-high liquid level float switch 12 is used for stopping the pump.

[0036] During refueling, the fuel passes through the refueling valve 5, the total valve 4 in turn along the fuel pipe 501 and the total pipe 401 to the liquid deceleration cavity 3, as shown in Figure 4 , the high flow rate jet fuel entering the cavity is divided into upper and lower halves by the flow divider 301; the jet fuel in the lower half passes through the flow guide plate 302 to increase the flow rate and flows in the opposite direction of the jet fuel in the upper half; the jet fuel in the upper and lower halves collides in the collision area above the flow divider 301, the flow rate of the jet fuel in the two halves is greatly reduced, the impact on the oil tank 17 is greatly reduced, and the kinetic energy of the high flow rate jet fuel is partly converted into the sound energy of the sound emitted when the upper and lower jet fuels collide, and the other part is converted into the internal energy of the jet fuel, as shown in Figure 4 , the length of the arrow represents the flow rate, and the density of the arrow represents the flow rate. During the process of the jet fuel entering the oil tank, if there is airflow flowing out of the vent overflow pipe 1601, the value of the pressure gauge 13 does not increase obviously, and the liquid level of the liquid level gauge 10 gradually rises, which indicates that the refueling process is normal and the venting is smooth, if there is no airflow flowing out of the vent overflow pipe 1601, and the value of the pressure gauge 13 increases obviously, which indicates that the vent overflow valve 16 is not opened and the venting is not smooth, and the valve needs to be slowly opened. With the increase of the refueling amount, the liquid level of the liquid level gauge 10 continuously rises, when it reaches the first height of the high liquid level float switch 11, the float acts, the switch state changes, the high liquid level signal is transmitted to the jet fuel control system, the system issues an alarm, prompts the high refueling amount, and needs to be warned and stopped in time, after refueling, the total valve 4 and the refueling valve 5 are closed.

[0037] During the process of draining, the drain valve 6 and the total valve 4 are opened in turn to drain, the liquid level of the liquid level gauge 10 continuously decreases, the process of draining only needs to operate the related valves, and no jet fuel is leaked, which is safe and convenient to operate.

[0038] In the case of emergency, if the operator fails to stop the refueling in time after the control system issues a high liquid level alarm during the refueling process, the liquid level in the oil tank continues to rise, and when it reaches the second height of the high-high liquid level float switch 12, the float moves and the state of the switch changes, the high-high liquid level signal is transmitted to the jet fuel control system, and the system will automatically stop the pump; in the extreme case, if the system fails to stop the pump, the control room personnel can communicate with the test personnel at the oil tank through the intercom, and the test personnel can open the drain valve 6 and close the total valve 4 in time, so that the jet fuel can bypass and not enter the oil tank. If the oil tank is filled during the operation and overflows, the overflowed jet fuel will flow into the oil collection tank 2, and after the fault is checked, the overflowed jet fuel can be recovered and treated through the drain valve 2. There is no jet fuel leakage to the deck during the entire process, and the safety of the test is greatly increased.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that; the specific embodiments of the present application can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed.

Claims

1. An oil storage tank for testing a ship's jet fuel system, characterized in that: The cam is connected to the oil outlet of the fuel tank, and the cam is connected to the fuel pipe of the fuel tank through the oil outlet port. The cam is connected to the fuel pipe of the fuel tank through the oil outlet port. The cam is connected to the fuel pipe of the fuel tank through the oil outlet port. The cam is connected to the fuel pipe of the fuel tank through the oil outlet port. The cam is connected to the fuel pipe of the fuel tank through the oil outlet port.

2. The oil storage tank according to claim 1, characterized in that: The thickness of the diverter plate gradually increases along the height.

3. The oil storage tank according to claim 1, characterized in that: An oil tank is provided below the oil storage tank, the oil tank is fixed on the ship, the oil storage tank is fixed in the oil tank, a discharge pipe is provided at the bottom of the side of the oil tank, and a discharge valve is provided on the discharge pipe.

4. The oil storage tank according to claim 3, characterized in that: A manhole cover is provided on the upper end of the oil storage tank. A vent overflow pipe is provided on the manhole cover. A vent overflow valve is provided on the vent overflow pipe. The outlet of the vent overflow pipe faces the oil tank.

5. The oil storage tank according to claim 1, characterized in that: A liquid level gauge communicating with the oil storage tank is provided on the side of the oil storage tank.

6. The oil storage tank according to claim 5, characterized in that: A high liquid level float switch is provided at a first height on the upper side of the liquid level gauge, and a high-high liquid level float switch is provided at a second height on the upper side of the liquid level gauge. The second height is greater than the first height. The high liquid level float switch and the high-high liquid level float switch are both electrically connected to the control system of the jet fuel system. When the fuel in the liquid level gauge reaches the first height, the high liquid level float switch sends a signal to the control system, and the control system issues an alarm to prompt that the fuel level is high, a warning is required, and refueling is stopped in time. When the fuel in the liquid level gauge reaches the second height, the high-high liquid level float switch sends a signal to the control system, and the control system will immediately and automatically stop the pump and stop refueling.

7. The oil storage tank according to claim 5, characterized in that: The lower end of the liquid level gauge is provided with a temperature gauge, and the upper end of the liquid level gauge is provided with a pressure gauge.

8. The oil storage tank according to claim 1, characterized in that: The top of the oil storage tank is symmetrically provided with lifting lugs.

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