Pipeline refueling vehicle

Abstract

The present invention discloses a pipeline refueling vehicle, which, by adding a shuttle valve and a second two-position three-way valve, can send out an effective sound and light alarm and automatically cut off the flow and close the gas-controlled pressure control valve when the return oil tank continues to take in oil and reaches a high-high liquid level and the gas-controlled pressure control valve fails to be effectively closed. Compared with the prior art, the present invention has few modifications and only needs to add a second shuttle valve and a second two-position three-way valve to realize the automatic cut-off and closing function. In addition, the present invention is provided with a high-high liquid level sound and light alarm lamp on the return oil tank, which can remind the refueler by sound when the liquid level in the return oil tank reaches a high-high liquid level. Compared with the original light alarm lamp, the reminder function is stronger and the effect is better.

Description

Technical Field

[0001] The invention relates to the field of refueling vehicle equipment, and in particular to a pipeline refueling vehicle. Background Art

[0002] At present, in the aviation fuel supply industry, aircraft refueling trucks are the most widely used special vehicles, among which aircraft pipeline refueling trucks are a common type of aircraft refueling trucks. During the use of pipeline refueling trucks, it was found that there was a major safety hazard of oil overflow from the return tank. After the aircraft refueling operation is completed (releasing the deadman), if the air-controlled pressure control valve fails to be effectively closed, the oil will be connected to the return tank through the air-controlled pressure control valve, causing the return tank to continue to enter the oil. When the oil level reaches the high liquid level and the high-high liquid level, the sound and light alarm fails to be effectively issued to remind the refueler, and oil spills are likely to occur; the existing low-altitude pipeline refueling trucks are only equipped with a high-high liquid level light alarm when leaving the factory, and there is no high-high liquid level sound alarm. The light alarm is not easy to detect during the actual refueling process, and the existing low-altitude pipeline refueling trucks do not have a device to automatically close the air-controlled pressure control valve, which can easily lead to the occurrence of apron oil spills. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned technical deficiencies of the prior art and provide a pipeline refueling vehicle, which, when the oil return tank continues to flow into the high liquid level and the gas-controlled pressure control valve fails to close effectively, issues an effective sound and light alarm and can automatically cut off and close the gas-controlled pressure control valve. The specific scheme of the present invention is:

[0004] A pipeline refueling vehicle, the pipeline refueling vehicle includes a refueling device, the refueling device includes a return oil tank, an air-controlled pressure control valve, an air compressor, a two-position three-way valve, a Deadman valve, a super Deadman valve, a first shuttle valve, an air-controlled two-position three-way valve, a pressure reducing valve, a shuttle valve, a ground well joint, a high liquid level valve, a second shuttle valve, a second two-position three-way valve, a high-high liquid level sound and light alarm lamp, a high-high liquid level sound and light alarm device are arranged in the return oil tank, the air-controlled pressure control valve is connected to the return oil tank through a pipeline, the air compressor is connected to the high-pressure port of the two-position three-way valve, the outlet of the two-position three-way valve is connected to the Deadman valve, the super Deadman valve, the high liquid level valve, and the inlet of the second two-position three-way valve They are all connected, the outlet of the high liquid level valve is connected to the air-controlled two-position three-way valve and the air-controlled port of the second two-position three-way valve, the outlet of the Dedeman valve is connected to the inlet on one side of the first shuttle valve, the outlet of the surpassing Dedeman valve is connected to the inlet on the other side of the first shuttle valve, the outlet of the first shuttle valve is connected to the inlet of the air-controlled two-position three-way valve, the outlet of the second two-position three-way valve is connected to the inlet on one side of the second shuttle valve, the outlet of the first shuttle valve is connected to the inlet on the other side of the second shuttle valve, the outlet of the first shuttle valve is also connected to the inlet of the air-controlled two-position three-way valve, the outlet of the air-controlled two-position three-way valve is connected to the ground well joint, and the outlet of the second shuttle valve is connected to the air-controlled port of the air-controlled pressure control valve.

[0005] The ground well joint is connected to the ground well on the apron, the ground well is connected to the first filter through the ground well hose, the rotary joint, and the ball valve, the first filter is connected to the flow meter, the flow meter is connected to the lifting platform hose or the reel hose, the lifting platform hose or the reel hose is connected to the pressure refueling nozzle, and the pressure refueling nozzle is connected to the aircraft fuel tank inlet. Two branch flow paths are set at the outlet of the first filter, one is connected to the flow meter, and the other is connected to the inlet of the air-controlled pressure control valve, and the outlet of the air-controlled pressure control valve is connected to the auxiliary fuel tank.

[0006] A filter is also arranged between the air compressor and the two-position three-way valve.

[0007] An oil mist collector is also provided between the air compressor and the filter.

[0008] A main air source switch is also provided between the air compressor and the oil mist collector.

[0009] The driving device of the high liquid level valve is a float.

[0010] The outlet of the high liquid level valve is also connected to the high-high liquid level alarm device. The high liquid level valve includes a float-controlled two-position three-way valve and a third shuttle valve. The float-controlled two-position three-way valve includes a high-pressure inlet, an outlet and a second outlet. The high-pressure inlet is connected to the outlet of the two-position three-way valve, and the outlet is connected to an inlet on one side of the third shuttle valve. When the high-pressure inlet and outlet of the high liquid level valve are disconnected, the outlet is connected to the second outlet, and the outlet of the third shuttle valve is connected to the high-high liquid level sound and light alarm device. The high-high liquid level sound and light alarm device controls the high-high liquid level sound and light alarm light to make a sound and light up an alarm.

[0011] The beneficial effects brought about by adopting the present invention are:

[0012] 1. The present invention sets a high-level sound and light alarm light on the return oil tank. When the liquid level in the return oil tank reaches a high-level, it can remind the refueler through sound. Compared with the original light alarm light, the reminder function is stronger and the effect is better.

[0013] 2. In the pipeline refueling vehicle of the present invention, when the oil return tank continues to flow into the high-high liquid level and the air-controlled pressure control valve fails to be effectively closed, the air-controlled pressure control valve is closed by using the high-pressure gas through the added second two-position three-way valve and the second shuttle valve, and the automatic control effect is good, which can effectively prevent the auxiliary oil tank from overflowing.

[0014] 3. The present invention only adds two valves to the original pipeline to achieve automatic closing of the air-controlled pressure control valve.

[0015] The existing technology and the present invention have little modification, and only need to add a second shuttle valve and a second two-position three-way valve to realize the automatic shutoff function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the pipeline refueling vehicle;

[0017] Figure 2 This is a diagram of the refueling system for pipeline refueling trucks;

[0018] In the figure, 1. air compressor; 2. main air source switch; 3. filter; 4. two-position three-way valve; 5. Deadman valve; 6. high liquid level valve; 7. ground well connector; 8. Beyond Deadman valve; 9. first shuttle valve; 10. air-controlled two-position three-way valve; 11. pressure reducing valve; 12. shuttle valve; 13. second shuttle valve; 14. second two-position three-way valve; 15. air-controlled pressure control valve. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of 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.

[0020] Example 1

[0021] As attached Figure 1 A pipeline refueling vehicle is shown, which includes a refueling device, which includes a return oil tank, a pneumatic pressure control valve 15, an air compressor 1, a two-position three-way valve 4, a deadman valve 5, a super deadman valve 8, a first shuttle valve 9, a pneumatic two-position three-way valve 10, a pressure reducing valve 11, a shuttle valve 12, a ground well connector 7, a high liquid level valve 6, a second shuttle valve 13, and a second two-position three-way valve 14. A high-high liquid level sound and light alarm lamp and a high-high liquid level sound and light alarm device are arranged in the return oil tank. The pneumatic pressure control valve 15 is connected to the return oil tank through a pipeline. The air compressor 1 is connected to the high-pressure port of the two-position three-way valve 4. The outlet of the two-position three-way valve 4 is connected to the inlet of the deadman valve 5, the super deadman valve 8, the high liquid level valve 6, and the second two-position three-way valve 14. The high liquid level valve 6 The outlet is connected to the air-controlled two-position three-way valve 10 and the air-controlled port of the second two-position three-way valve 14, the outlet of the Dedeman valve 5 is connected to the inlet on one side of the first shuttle valve 9, the outlet of the Dedeman valve 8 is connected to the inlet on the other side of the first shuttle valve 9, the outlet of the first shuttle valve 9 is connected to the inlet of the air-controlled two-position three-way valve 10, the outlet of the second two-position three-way valve 14 is connected to the inlet on one side of the second shuttle valve 13, the outlet of the first shuttle valve 9 is connected to the inlet on the other side of the second shuttle valve 13, the outlet of the first shuttle valve 9 is also connected to the inlet of the air-controlled two-position three-way valve 10, the outlet of the air-controlled two-position three-way valve 10 is connected to the ground well connector 7, the outlet of the second shuttle valve 13 is connected to the air-controlled port of the air-controlled pressure control valve 15, and the air-controlled pressure control valve 15 is closed under the control of the high-pressure gas.

[0022] The ground well connector 7 is connected to the ground well on the apron, and the ground well is connected to the first filter 3 via a ground well hose, a rotary joint, and a ball valve. The first filter 3 is connected to a flow meter, and the flow meter is connected to a lifting platform hose or a reel hose. The lifting platform hose or the reel hose is connected to a pressure refueling nozzle, and the pressure refueling nozzle is connected to the aircraft fuel tank inlet. Two branch flow paths are set at the outlet of the first filter 3, one of which is connected to the flow meter, and the other is connected to the inlet of the air-controlled pressure control valve 15. The outlet of the air-controlled pressure control valve 15 is connected to the auxiliary fuel tank. After refueling, release the Deadman valve and the Beyond Deadman valve 8, and the aviation fuel in the pipeline can flow into the auxiliary fuel tank.

[0023] A filter 3 is also provided between the air compressor 1 and the two-position three-way valve 4 .

[0024] An oil mist collector is also provided between the air compressor 1 and the filter 3 .

[0025] An air source main switch 2 is also provided between the air compressor 1 and the oil mist collector.

[0026] The driving device of the high liquid level valve 6 is a float.

[0027] The outlet of the high liquid level valve 6 is also connected to the high-high liquid level sound and light alarm device. The high liquid level valve 6 includes a float-controlled two-position three-way valve 4 and a third shuttle valve 12. The float-controlled two-position three-way valve 4 includes a high-pressure inlet, an outlet and a second outlet. The high-pressure inlet is connected to the outlet of the two-position three-way valve 4, and the outlet is connected to an inlet on one side of the third shuttle valve 12. When the high-pressure inlet and outlet of the high liquid level valve 6 are disconnected, the outlet is connected to the second outlet, and the high-high liquid level sound and light alarm device controls the high-high liquid level sound and light alarm light to emit sound and light an alarm.

[0028] The working process of the pipeline refueling truck is as follows:

[0029] When the pipeline refueling truck is refueling, the air compressor 1 inputs the compressed air into the ground well joint 7 through the two-position three-way valve 4, the deadman valve, the first shuttle valve 9, and the air-controlled two-position three-way valve 10. The ground well joint 7 is connected to the ground well on the apron. Under the action of high-pressure air, the aviation oil enters the first filter 3 through the ground well hose, the rotary joint, and the ball valve, and then passes through the flow meter, the lifting platform hose or the reel hose, and then enters the aircraft tank inlet through the pressure refueling nozzle to complete the refueling. Two branch flow paths are set at the outlet of the first filter 3, one of which is connected to the flow meter, and the other is connected to the inlet of the air-controlled pressure control valve 15. The outlet of the air-controlled pressure control valve 15 is connected to the auxiliary tank. After refueling, release the Deadman valve and the Beyond Deadman valve 8, and the aviation oil in the pipeline can flow into the auxiliary tank.

[0030] During the process of aviation fuel entering the auxiliary fuel tank, since the Deadman valve and the Beyond Deadman valve 8 are both closed, the compressed air cannot enter the ground well joint 7. At the same time, if the high-high liquid level sound and light alarm device detects that the oil in the return tank has reached the high-high liquid level, the high-level valve 6 is disconnected, the pipelines on both sides cannot be connected, and the high-pressure gas cannot enter the second two-position three-way valve. At this time, the inlet and outlet of the second two-position three-way valve 14 are connected, and the compressed gas is input to the air-controlled pressure control valve 15 through the second shuttle valve 13, so that the air-controlled pressure control valve 15 is closed to prevent aviation fuel from flowing into the return tank, thereby preventing the return tank from overflowing. At the same time, the high-high liquid level sound and light alarm device controls the high-high liquid level sound and light alarm lamp to emit sound and light alarm.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the appended claims and their equivalents.

Claims

1. A pipeline refueling vehicle, the pipeline refueling vehicle includes a refueling device, the refueling device includes a return tank, an air-controlled pressure control valve, an air compressor, a two-position three-way valve, a Deadman valve, a super Deadman valve, a first shuttle valve, an air-controlled two-position three-way valve, a pressure reducing valve, a shuttle valve, a ground well joint, a high liquid level valve, a second shuttle valve, and a second two-position three-way valve. A high-high liquid level sound and light alarm lamp and a high-high liquid level sound and light alarm device are arranged in the return tank. The air-controlled pressure control valve is connected to the return tank through a pipeline, the air compressor is connected to the high-pressure port of the two-position three-way valve, the outlet of the two-position three-way valve is communicated with the inlet of the Deadman valve, the super Deadman valve, the high liquid level valve, and the second two-position three-way valve, and the outlet of the high liquid level valve is communicated with the air-controlled ports of the air-controlled two-position three-way valve and the second two-position three-way valve. The outlet of the Dedeman valve is connected to the inlet on one side of the first shuttle valve, the outlet of the Dedeman valve is connected to the inlet on the other side of the first shuttle valve, the outlet of the first shuttle valve is connected to the inlet of the air-controlled two-position three-way valve, the outlet of the second two-position three-way valve is connected to the inlet on one side of the second shuttle valve, the outlet of the first shuttle valve is connected to the inlet on the other side of the second shuttle valve, the outlet of the first shuttle valve is also connected to the inlet of the air-controlled two-position three-way valve, the outlet of the air-controlled two-position three-way valve is connected to the ground well joint, and the outlet of the second shuttle valve is connected to the air control port of the air-controlled pressure control valve; a filter is also arranged between the air compressor and the two-position three-way valve; the outlet of the high liquid level valve is also connected to the high-high liquid level sound and light alarm device, and the high-high liquid level sound and light alarm device controls the high-high liquid level sound and light alarm light.

2. A pipeline refueling vehicle as described in claim 1, wherein the ground well joint is connected to the ground well on the apron, the ground well is connected to the first filter via a ground well hose, a rotary joint, and a ball valve, the first filter is connected to a flow meter, the flow meter is connected to a lifting platform hose or a reel hose, the lifting platform hose or the reel hose is connected to a pressure refueling nozzle, and the pressure refueling nozzle is connected to the inlet of the aircraft fuel tank; two branch flow paths are provided at the outlet of the first filter, one path is connected to the flow meter, and the other path is connected to the inlet of the air-controlled pressure control valve, and the outlet of the air-controlled pressure control valve is connected back to the fuel tank.

3. A pipeline refueling vehicle as claimed in claim 1, characterized in that: An oil mist collector is also provided between the air compressor and the filter.

4. A pipeline refueling vehicle as claimed in claim 3, characterized in that: A main air source switch is also provided between the air compressor and the oil mist collector.

5. A pipeline refueling vehicle as claimed in claim 1, characterized in that: The driving device of the high liquid level valve is a float.

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