Aircraft refueling pipeline with anti-freezing solution filling function

Abstract

The invention discloses an aircraft refueling pipeline with an anti-freezing solution filling function, which comprises a scraper flowmeter, an anti-freezing solution filling pump, an anti-freezing solution storage tank and an anti-freezing solution pipeline system, a clutch is connected between the scraper flowmeter and the anti-freezing solution filling pump, and the anti-freezing solution filling pump is connected with the anti-freezing solution storage tank. An output shaft of the scraper flowmeter is connected with the clutch, the clutch outputs power to the anti-freezing solution filling pump, and a proportional control handle is arranged on the anti-freezing solution filling pump and used for carrying out stepless regulation on the filling flow. The anti-freezing solution filling device is reasonable in structural design, whether anti-freezing solution is filled or not and accurate control over the filling proportion can be achieved without adding extra power, the convenience of anti-freezing solution filling operation is greatly improved, the economical efficiency and the low-temperature performance of aircraft fuel oil can be better guaranteed, and the aircraft operation safety is guaranteed while the cost is further reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft fuel filling, and in particular to an aircraft fuel filling pipeline with an antifreeze liquid filling function. Background Art

[0002] Since the aircraft's flight route is at high altitudes and the temperature at high altitudes is very low, it is necessary to ensure the low-temperature performance of the aircraft fuel. The commonly used measures are: 1. Use aviation kerosene with good low-temperature resistance, such as No. 15 aviation kerosene. However, due to its high price, it is only used in certain specific fields; 2. Add additives to the aircraft fuel, such as antifreeze. The main methods are: a. Add an appropriate amount of antifreeze to the aircraft fuel storage tank, mix it, and then add it to the aircraft tank through the pump oil pipeline system; b. Connect the antifreeze storage tank to the pump inlet, suck it into the refueling pipeline through the pump, stir and mix it, and then add it to the aircraft tank.

[0003] The above antifreeze filling method solves the fuel economy and low temperature resistance of aircraft to a certain extent. However, since the timing and proportion of antifreeze filling cannot be accurately controlled, it is only suitable for use on agricultural aircraft and low-altitude short-range aircraft, and its use has limitations. For this reason, we designed an aircraft refueling pipeline with antifreeze filling function to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose an aircraft refueling pipeline with an antifreeze filling function, which can realize accurate control of whether antifreeze is added and the filling ratio without adding additional power, greatly improving the convenience of antifreeze filling operation, and can better ensure the economy and low temperature of aircraft fuel, thereby further reducing costs and ensuring the safety of aircraft operation.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An aircraft refueling pipeline with an antifreeze filling function comprises a scraper flowmeter, an antifreeze filling pump, an antifreeze storage tank and an antifreeze pipeline system, wherein a clutch is connected between the scraper flowmeter and the antifreeze filling pump, the output shaft of the scraper flowmeter is connected to the clutch, the clutch outputs power to the antifreeze filling pump, and a proportional adjustment handle is provided on the antifreeze filling pump to perform stepless adjustment on the filling flow.

[0007] Preferably, the ratio of the antifreeze volume pumped out by the antifreeze filling pump per revolution to the oil volume metered output by the scraper flowmeter per revolution can be set.

[0008] Preferably, the pipeline at the outlet of the antifreeze filling pump is connected to the filling hole at the inlet of the scraper flowmeter, the antifreeze filling pump and the scraper flowmeter operate synchronously, and the antifreeze filling pump pumps the antifreeze from the antifreeze storage tank into the filling hole at the inlet of the scraper flowmeter.

[0009] Preferably, an antifreeze flow meter located between the antifreeze filling pump and the scraper flow meter inlet is installed on the antifreeze pipeline system.

[0010] Preferably, a filter is installed between the antifreeze storage tank and the scraper flowmeter.

[0011] Preferably, the filter comprises a coarse filter and a fine filter, the coarse filter is installed between the antifreeze storage tank and the antifreeze filling pump, and the fine filter is installed between the antifreeze filling pump and the scraper flowmeter.

[0012] Preferably, a one-way valve is installed between the antifreeze filling pump and the inlet of the scraper flowmeter.

[0013] Preferably, it also includes an aircraft jet fuel storage tank, a jet fuel pipeline and a refueling hose. The jet fuel pipeline is flange-connected to the inlet of the scraper flowmeter, and the outlet of the scraper flowmeter is connected to the aircraft fuel tank through the refueling hose.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This aircraft refueling pipeline with antifreeze filling function uses jet fuel to push the scraper flowmeter rotor and drive the antifreeze filling pump to operate. The antifreeze filling pump and the scraper flowmeter operate synchronously. The antifreeze filling pump pumps the antifreeze from the antifreeze storage tank into the filling hole at the inlet of the scraper flowmeter, so that the antifreeze and jet fuel enter the scraper flowmeter together for stirring and mixing, and then are filled into the aircraft tank together, and it can control whether the antifreeze is filled.

[0016] 2. The aircraft refueling pipeline with antifreeze filling function has an antifreeze filling pump with an adjustment knob, which can steplessly adjust the filling flow rate. The ratio of the antifreeze volume pumped out per revolution of the antifreeze filling pump to the oil volume output per revolution of the scraper flowmeter can be set as needed, thereby achieving precise control of the antifreeze filling flow ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the planar structure of an aircraft refueling pipeline with antifreeze filling function proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the first-person perspective stereoscopic structure of an aircraft refueling pipeline with an antifreeze filling function proposed by the present invention;

[0019] Figure 3 A schematic diagram of the third perspective structure of an aircraft refueling pipeline with antifreeze filling function proposed by the present invention;

[0020] Figure 4 A schematic diagram of the third-view stereoscopic structure of an aircraft refueling pipeline with an antifreeze filling function proposed by the present invention;

[0021] Figure 5 This is a filling working principle diagram of an aircraft refueling pipeline with antifreeze filling function proposed by the present invention;

[0022] Figure 6 The invention discloses a connection diagram of an aircraft refueling pipeline scraper flowmeter with antifreeze filling function and an aircraft jet fuel storage tank, a jet fuel pipeline and a refueling hose.

[0023] In the figure: 1. Scraper flow meter; 2. Antifreeze filling pump; 3. Antifreeze storage tank; 4. Antifreeze piping system; 5. Clutch; 6. Antifreeze flow meter; 7. Coarse filter; 8. Fine filter; 9. Check valve; 10. Aircraft jet fuel storage tank; 11. Jet fuel pipeline; 12. Refueling hose. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figure 1-Figure 6 An aircraft refueling pipeline with an antifreeze filling function includes a scraper flowmeter 1, an antifreeze filling pump 2, an antifreeze storage tank 3 and an antifreeze pipeline system 4. A clutch 5 is connected between the scraper flowmeter 1 and the antifreeze filling pump 2. The output shaft of the scraper flowmeter 1 is connected to the clutch 5. The clutch 5 outputs power to the antifreeze filling pump 2. During filling, the power output of the scraper flowmeter 1 can be interrupted and engaged based on the clutch 5, thereby controlling the filling timing of the antifreeze filling pump 2. The refueling truck goes to When the aircraft is refueling, antifreeze can be added to the jet fuel as needed. The clutch 5 between the antifreeze filling pump 2 and the scraper flowmeter 1 can be manually engaged or disconnected to achieve the function of adding or not adding antifreeze. The antifreeze filling pump 2 is provided with a proportional adjustment handle to perform stepless adjustment on the filling flow. The ratio of the antifreeze volume pumped out by the antifreeze filling pump 2 per revolution to the oil volume measured and output by the scraper flowmeter 1 per revolution can be set, thereby achieving precise control of the filling ratio of the flow rate;

[0026] The pipeline at the outlet of the antifreeze filling pump 2 is connected to the filling hole at the inlet of the scraper flowmeter 1. The antifreeze filling pump 2 and the scraper flowmeter 1 operate synchronously. The antifreeze filling pump 2 pumps the antifreeze from the antifreeze storage tank 3 into the filling hole at the inlet of the scraper flowmeter 1. The outlet pipeline of the antifreeze filling pump 2 must be connected to the filling hole at the inlet of the scraper flowmeter 1. On the one hand, the antifreeze and the jet fuel can enter the scraper flowmeter 1 together for mixing, and on the other hand, the scraper flowmeter 1 can ensure accurate measurement. When the scraper flowmeter 1 is engaged with the clutch 5, the scraper flowmeter 1 measures the mixed capacity of the antifreeze and the jet fuel. When the scraper flowmeter 1 is disconnected from the clutch 5, the scraper flowmeter 1 measures the capacity of the jet fuel. Regardless of whether the scraper flowmeter 1 and the clutch 5 are engaged or disconnected, the scraper flowmeter 1 measures the total capacity filled into the aircraft tank.

[0027] The antifreeze liquid pipeline system 4 is provided with an antifreeze liquid flow meter 6 located between the antifreeze liquid filling pump 2 and the inlet of the scraper flow meter 1, and the antifreeze liquid flow meter 6 can measure the added volume of the antifreeze liquid;

[0028] A filter is installed between the antifreeze storage tank 3 and the scraper flowmeter 1, and the filter includes a coarse filter 7 and a fine filter 8. The coarse filter 7 is installed between the antifreeze storage tank 3 and the antifreeze filling pump 2, and the fine filter 8 is installed between the antifreeze filling pump 2 and the scraper flowmeter 1. The coarse filter 7 and the fine filter 8 can filter the antifreeze to reduce the turbidity and thickening of the antifreeze, thereby ensuring the use effect of the antifreeze;

[0029] A one-way valve 9 is installed between the antifreeze filling pump 2 and the inlet of the scraper flowmeter 1, so that the antifreeze can only flow to the scraper flowmeter 1, avoiding the backflow of the liquid in the scraper flowmeter 1;

[0030] Reference Figure 6 , also includes an aircraft jet fuel storage tank 10, a jet fuel pipeline 11 and a refueling hose 12. The inlet of the jet fuel pipeline 11 is connected to the aircraft jet fuel storage tank 10, and the outlet is flange-connected to the inlet of the scraper flowmeter 1. The jet fuel pipeline 11 is installed with a bottom valve, an oil pump, a filter separator, a pressure flow automatic control valve and other structures, which can transport the jet fuel in the aircraft jet fuel storage tank 10 to the scraper flowmeter 1 through the jet fuel pipeline 11. The outlet of the scraper flowmeter 1 is connected to the aircraft fuel tank through the refueling hose 12. A venturi is installed between the scraper flowmeter 1 and the refueling hose 12. The scraper flowmeter 1 can add jet fuel or a mixture of jet fuel and antifreeze into the aircraft fuel tank through the refueling hose 12.

[0031] The present invention can be explained by the following operation mode:

[0032] In the present invention, the antifreeze filling device is connected to the aircraft refueling pipeline. When the pipeline is connected, the jet fuel pipeline 11 is flange-connected to the inlet of the scraper flowmeter 1, and the refueling hose 12 is flange-connected to the outlet of the scraper flowmeter 1. The installation is simple and convenient. When the refueling truck is refueling the aircraft, when it is necessary to add antifreeze to the jet fuel, the clutch 5 between the antifreeze filling pump 2 and the scraper flowmeter 1 is opened by manual operation. The jet fuel is pressurized by the oil pump on the jet fuel pipeline 11 to push the rotor of the scraper flowmeter 1 and drive the antifreeze filling pump 2 to operate. The antifreeze filling pump 2 and the scraper flowmeter 1 operate synchronously. The antifreeze filling pump 2 pumps the antifreeze from the antifreeze storage tank 3 into the filling hole at the inlet of the scraper flowmeter 1. The antifreeze and the jet fuel enter the scraper flowmeter 1 together for stirring and mixing, and then are filled into the aircraft fuel tank together through the refueling hose 12.

[0033] When it is not necessary to add antifreeze to the jet fuel, the clutch 5 between the antifreeze filling pump 2 and the scraper flowmeter 1 can be disconnected by manual operation, and the antifreeze filling pump 2 stops rotating, thereby realizing the function of not adding antifreeze, and only the jet fuel in the aircraft jet fuel storage tank 10 is filled into the aircraft fuel tank through the jet fuel pipeline 11, the scraper flowmeter 1 and the refueling hose 12 in sequence;

[0034] By adjusting the proportional adjustment handle on the antifreeze filling pump 2, the filling flow can be steplessly adjusted. The ratio of the antifreeze volume pumped out by the antifreeze filling pump 2 per revolution to the oil volume metered output by the scraper flowmeter 1 per revolution can be set as needed, thereby achieving precise control of the filling ratio of the flow rate.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An aircraft refueling pipeline with an antifreeze filling function, comprising a scraper flow meter (1), an antifreeze filling pump (2), an antifreeze storage tank (3) and an antifreeze pipeline system (4), characterized in that: A clutch (5) is connected between the scraper flowmeter (1) and the antifreeze filling pump (2); the output shaft of the scraper flowmeter (1) is connected to the clutch (5); the clutch (5) outputs power to the antifreeze filling pump (2); and a proportional adjustment handle is provided on the antifreeze filling pump (2) to perform stepless adjustment on the filling flow.

2. The aircraft refueling pipeline with antifreeze filling function according to claim 1, characterized in that: The ratio of the antifreeze volume pumped out by the antifreeze filling pump (2) per revolution to the oil volume metered and output by the scraper flow meter (1) per revolution can be set.

3. The aircraft refueling pipeline with antifreeze filling function according to claim 1, characterized in that: The pipeline at the outlet of the antifreeze filling pump (2) is connected to the filling hole at the inlet of the scraper flow meter (1). The antifreeze filling pump (2) and the scraper flow meter (1) operate synchronously. The antifreeze filling pump (2) pumps the antifreeze from the antifreeze storage tank (3) into the filling hole at the inlet of the scraper flow meter (1).

4. The aircraft refueling pipeline with antifreeze filling function according to claim 1, characterized in that: The antifreeze liquid pipeline system (4) is provided with an antifreeze liquid flow meter (6) located between the antifreeze liquid filling pump (2) and the inlet of the scraper flow meter (1).

5. The aircraft refueling pipeline with antifreeze filling function according to claim 1, characterized in that: A filter is installed between the antifreeze liquid storage tank (3) and the scraper flow meter (1).

6. The aircraft refueling pipeline with antifreeze filling function according to claim 5, characterized in that: The filter comprises a coarse filter (7) and a fine filter (8), wherein the coarse filter (7) is installed between the antifreeze storage tank (3) and the antifreeze filling pump (2), and the fine filter (8) is installed between the antifreeze filling pump (2) and the scraper flow meter (1).

7. The aircraft refueling pipeline with antifreeze filling function according to claim 1, characterized in that: A one-way valve (9) is installed between the antifreeze liquid filling pump (2) and the inlet of the scraper flow meter (1).

8. The aircraft refueling pipeline with antifreeze filling function according to claim 1, characterized in that: It also comprises an aircraft jet fuel storage tank (10), a jet fuel pipeline (11) and a refueling hose (12); the jet fuel pipeline (11) is flange-connected to the inlet of the scraper flow meter (1); and the outlet of the scraper flow meter (1) is connected to the aircraft fuel tank via the refueling hose (12).

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