阅读说明：本技术 一种管线加油车 (Pipeline refueller ) 是由 黄文强 宁立文 吴学春 罗飞达 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种管线加油车,其通过增设梭阀、第二二位三通阀,在回油箱持续进油到达高高液位时,气控压力控制阀未能有效关闭时,发出有效的声光报警且能够自动截流,关闭气控压力控制阀。相对现有技术,本发明改动少,只需要加装第二梭阀、第二二位三通阀就可以实现自动截流关闭功能。而且本发明在回油箱上设置高高液位声光报警灯,在回油箱内的液位达到高高液位时,能够通过声音提醒加油员,与原始的光报警灯相比,提醒的作用更强,效果更佳。(The invention discloses a pipeline refueling truck, which is characterized in that a shuttle valve and a second two-position three-way valve are additionally arranged, when oil continuously fed into an oil return tank reaches a high liquid level and a pneumatic control pressure control valve is not effectively closed, an effective sound and light alarm is sent out, automatic shutoff can be realized, and the pneumatic control pressure control valve is closed. Compared with the prior art, the invention has less modification, and can realize the automatic interception and closing function only by additionally arranging the second shuttle valve and the second two-position three-way valve. In addition, the oil return tank is provided with the acousto-optic alarm lamp for high liquid level, so that an oil filler can be reminded by sound when the liquid level in the oil return tank reaches the high liquid level.)

1. A pipeline refueling truck comprises a refueling device, wherein the refueling device comprises an oil return tank, a pneumatic control pressure control valve, an air compressor, a two-position three-way valve, a stupid man valve, an override stupid man valve, a first shuttle valve, a pneumatic control 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 liquid level acousto-optic alarm lamp and a high liquid level acousto-optic alarm device are arranged in the oil return tank, the pneumatic control pressure control valve is connected with the oil return tank through a pipeline, the air compressor is connected with a high pressure port of the two-position three-way valve, an outlet of the two-position three-way valve is communicated with inlets of the stupid man valve, the override stupid man valve, the high liquid level valve and the second two-position three-way valve, an outlet of the high liquid level valve is connected with pneumatic control ports, the outlet of the override Tasman valve is connected with the inlet at the other side of the first shuttle valve, the outlet of the first shuttle is communicated with the inlet of the pneumatic control two-position three-way valve, the outlet of the second two-position three-way valve is connected with the inlet at one side of the second shuttle valve, the outlet of the first shuttle valve is connected with the inlet at the other side of the second shuttle valve, the outlet of the first shuttle valve is also connected with the inlet of the pneumatic control two-position three-way valve, the outlet of the pneumatic control two-position three-way valve is connected with the ground well joint, and the outlet of the second shuttle valve is connected with the pneumatic control.

2. The fuel tank truck as claimed in claim 1, wherein the well head is connected to a well on the tarmac, the well is connected to a first filter via a well hose, a swivel, a ball valve, the first filter is connected to a flow meter, the flow meter is connected to a lift platform hose or a reel hose, the lift platform hose or the reel hose is connected to a pressure fuel filling nozzle, and the pressure fuel filling nozzle is connected to an inlet of an aircraft fuel tank. And the outlet of the first filter is provided with two branch flow paths, one branch flow path is communicated with the flowmeter, the other branch flow path is communicated with the inlet of the pneumatic control pressure control valve, and the outlet of the pneumatic control pressure control valve is connected with the auxiliary oil tank.

3. The fuel line truck of claim 1, further comprising a filter between the air compressor and the two-position, three-way valve.

4. The fuel line truck as claimed in claim 1, wherein a mist sprayer is further provided between the air compressor and the filter.

5. The line refuelling vehicle of claim 1, wherein an air supply main switch is further provided between the air compressor and the lubricator.

6. The line refuelling vehicle of claim 1, wherein the drive means for the high level valve is a float.

7. The line refuelling vehicle of claim 1, wherein the outlet of the high level valve is further connected to a high level alarm device, the high level alarm device controlling a high level audible and visual alarm lamp.

Technical Field

The invention relates to the field of refueling vehicle equipment, in particular to a pipeline refueling vehicle.

Background

In the aviation fuel supply industry at present, an aircraft refueling truck is a special vehicle which is most widely applied, wherein an aircraft pipeline refueling truck is a common aircraft refueling truck. In the use process of the pipeline refueling truck, the major potential safety hazard of oil spilling of the oil return tank is found. After the airplane finishes refueling operation (the De Man is loosened), if the pneumatic control pressure control valve cannot be effectively closed, oil can be stringed into the oil return tank through the pneumatic control pressure control valve, so that the oil can be continuously fed into the oil return tank, and when the liquid level of the oil reaches a high liquid level and a high liquid level, an audible and visual alarm cannot be effectively sent to remind a refueling operator, so that an oil spilling event is easy to occur; the existing low-height pipeline refueling truck is only provided with a high liquid level light alarm when leaving a factory, and has no high liquid level sound alarm, the light alarm is not easy to be perceived in the actual refueling process, and the existing low-height pipeline refueling truck also has no device for automatically closing a pneumatic control pressure control valve, so that the occurrence of a apron oil spilling event is easily caused.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provides a pipeline refueling truck, which can send out an effective sound-light alarm and can automatically cut off and close a pneumatic control pressure control valve when a pneumatic control pressure control valve is not effectively closed when oil continuously enters an oil return tank and reaches a high liquid level. The specific scheme of the invention is as follows:

a pipeline refueling truck comprises a refueling device, wherein the refueling device comprises an oil return tank, a pneumatic control pressure control valve, an air compressor, a two-position three-way valve, a stupid man valve, an override stupid man valve, a first shuttle valve, a pneumatic control 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 liquid level acousto-optic alarm lamp and a high liquid level acousto-optic alarm device are arranged in the oil return tank, the pneumatic control pressure control valve is connected with the oil return tank through a pipeline, the air compressor is connected with a high pressure port of the two-position three-way valve, an outlet of the two-position three-way valve is communicated with inlets of the stupid man valve, the override stupid man valve, the high liquid level valve and the second two-position three-way valve, an outlet of the high liquid level valve is connected with pneumatic control ports, the outlet of the override Tasman valve is connected with the inlet at the other side of the first shuttle valve, the outlet of the first shuttle valve is communicated with the inlet of the pneumatic control two-position three-way valve, the outlet of the second two-position three-way valve is connected with the inlet at one side of the second shuttle valve, the outlet of the first shuttle valve is connected with the inlet at the other side of the second shuttle valve, the outlet of the first shuttle valve is also connected with the inlet of the pneumatic control two-position three-way valve, the outlet of the pneumatic control two-position three-way valve is connected with a ground well joint, and the outlet of the second shuttle valve is connected with the pneumatic control.

The ground well joint is connected with a ground well on the apron, the ground well is connected with a first filter through a ground well hose, a rotary joint and a ball valve, the first filter is connected with a flow meter, the flow meter is connected with a lifting platform hose or a reel hose, the lifting platform hose or the reel hose is connected with a pressure refueling connector, and the pressure refueling connector is connected with an inlet of an aircraft oil tank. And the outlet of the first filter is provided with two branch flow paths, one branch flow path is communicated with the flowmeter, the other branch flow path is communicated with the inlet of the pneumatic control pressure control valve, and the outlet of the pneumatic control pressure control valve is connected with the auxiliary oil tank.

And a filter is arranged between the air compressor and the two-position three-way valve.

An oil atomizer is also arranged between the air compressor and the filter.

An air source main switch is also arranged between the air compressor and the oil atomizer.

The driving device of the high liquid level valve is a buoy.

The outlet of the high liquid level valve is also connected with a high liquid level alarm device, the high liquid level valve comprises a buoy control two-position three-way valve and a third shuttle valve, the buoy control two-position three-way valve comprises a high-pressure inlet, an outlet and a second outlet, the high-pressure inlet is communicated with the outlet of the two-position three-way valve, the outlet is connected with the inlet of one side of the third shuttle valve, when the high-pressure inlet and the outlet of the high liquid level valve are disconnected, the outlet is communicated with the second outlet, the outlet of the third shuttle valve is connected with the high liquid level alarm device, and the high liquid level alarm device controls the high liquid level acousto-optic alarm lamp to sound and.

The invention has the following beneficial effects:

1. according to the invention, the high liquid level acousto-optic alarm lamp is arranged on the oil return tank, so that an oil filler can be reminded by sound when the liquid level in the oil return tank reaches the high liquid level, and compared with the original optical alarm lamp, the reminding function is stronger and the reminding effect is better.

2. According to the pipeline refueling truck, when the oil continuously enters the oil return tank and reaches a high liquid level and the pneumatic control pressure control valve is not effectively closed, the pneumatic control pressure control valve is closed by high-pressure gas through the second two-position three-way valve and the second shuttle valve, the automatic control effect is good, and the auxiliary oil tank can be effectively prevented from overflowing.

3. Compared with the prior art, the automatic shutoff valve has the advantages that the change is less, and the automatic shutoff and closing function can be realized only by additionally arranging the second shuttle valve and the second two-position three-way valve.

Drawings

FIG. 1 is a schematic view of the overall structure of a pipeline fuelling vehicle;

FIG. 2 is a diagram of a refueling system for a pipeline refueller;

in the figure, 1, an air compressor; 4. a gas source main switch; 5. a filter; 8. a two-position three-way valve; 12. a dull man valve; 14. a high level valve; 15. a ground well joint; 16. override deadbmann valve; 17. a first shuttle valve; 18. a pneumatic control two-position three-way valve; 19. a pressure reducing valve; 21. a shuttle valve; 102. a second shuttle valve; 103. a second two-position three-way valve; 105. a pneumatic control pressure control valve.

Detailed Description

In the following, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.