JP6110976B1 - Tank truck with hydrant valve dynamic test equipment - Google Patents

Abstract

A tank lorry is provided for dynamic testing of hydrant valves in a hydrant system. A tank lorry body 10 and a hydrant valve dynamic test apparatus 2 are provided. The hydrant valve dynamic test apparatus is at least an intake coupler 20 that can be connected to a discharge port of the hydrant valve, and for opening / closing control of the hydrant valve. Handle 22, coupling for supplying air connecting them, pressure regulating valve 23, fuel flow meter 24, tank 25 for storing aviation fuel, drop for introducing aviation fuel from the top of the tank The hydrant valve is connected to the tank so that the aviation fuel can be introduced into the tank at a predetermined flow rate, and the hydrant valve is opened by the opening / closing control handle. It is possible to measure the time until the flow of aviation fuel stops. [Selection] Figure 2

Description

  The present invention relates to a tank lorry equipped with a hydrant valve dynamic test apparatus.

Currently, aviation fuel is refueled at major airports using a refueling system called a hydrant system. In this hydrant system, as shown in FIG. 7, aviation fuel is temporarily stored in a storage tank 30 in the airport premises, and the aircraft is passed from the storage tank 30 through a fuel pipe 32 buried in the ground by a fuel supply pump 31. To the apron where the aircraft is parked. Then, refueling is performed by a fuel refueling vehicle (hereinafter referred to as a servicer) for feeding oil by connecting a hydrant valve 33 that is an aviation fuel supply valve at the exit of the fuel pipe 32 embedded in the apron and a refueling port of the aircraft.

  On the other hand, the hydrant valve 33, which is the outlet of the fuel pipe 32, is a particularly important device in the hydrant system, and may cause a major accident if an operation failure or the like occurs. Therefore, in order to ensure that the performance of the hydrant valve 33 is within an allowable range, it is obliged to periodically inspect a plurality of items.

  As an item of this inspection, there is an inspection item relating to the closing time of the hydrant valve 33 having a lanyard as an emergency stop device or the hydrant valve 33 having a dual type emergency stop device by air control and lanyards. The closing test of the hydrant valve 33 performed in this inspection is called a dynamic test, and this dynamic test is performed at least every year.

  The specific inspection contents by the dynamic test are that the hydrant valve 33 installed in the apron is opened and the lanyard of the hydrant valve 33 is operated from the operational state where aviation fuel is supplied, or the air supply coupling 220 is installed. The time from when the hydrant valve 33 is closed by detaching until the aviation fuel flow is completely stopped is measured. The time until the flow is stopped is set to 2 to 5 seconds. If the measurement result is not within this range, it is determined that the hydrant valve 33 needs to be adjusted or replaced.

  In the execution of this dynamic test, a servicer, a vent system capable of accepting the maximum flow rate during the test, and a method of measuring with a fuel receiving vehicle having capacity to receive the fuel during the test (hereinafter referred to as a fuel receiving vehicle), the servicer and the aircraft There is a method to measure during refueling.

  In the dynamic test using the servicer and the fuel receiving vehicle, it is necessary to arrange the servicer and the fuel receiving vehicle. In the dynamic test performed during actual refueling using the servicer and the aircraft, the aircraft or servicer operating with the airline or the like. In order to carry out all of the hydrant valves 33 installed in the airport using an aircraft or a servicer, it was necessary to prepare very complicated and time-consuming.

  The present invention has been made in view of the above-described conventional problems, and is capable of performing a hydrant valve dynamic test without using a servicer and a fuel receiving vehicle or a servicer and an aircraft. An object is to provide a tank lorry equipped with a device.

  In order to solve the above-mentioned problems, a tank lorry equipped with a hydrant valve dynamic test apparatus according to the present invention is characterized by the following.

  That is, a tank lorry equipped with a hydrant valve dynamic test device of the present invention comprises a tank lorry body and a hydrant valve dynamic test device, and the hydrant valve dynamic test device is connected to at least the discharge port of the hydrant valve. A possible intake coupler, a handle for opening and closing the hydrant valve, an air supply coupling, a pressure regulating valve, a fuel flow meter, a tank for storing aviation fuel, and an aviation fuel at the top of the tank The intake pipe, the pressure regulating valve, the fuel flow meter, and the drop pipe introduce aviation fuel discharged from the hydrant valve into the tank at a predetermined flow rate. The open / close control can be connected From the state where the hydrant valve is opened by the handle and the aviation fuel is flowed at a predetermined flow rate, the hydrant valve is closed by removing the air supply coupling, and then the flow of the aviation fuel is stopped. It is characterized by being able to measure time.

  In the tank lorry equipped with the hydrant valve dynamic test apparatus, the hydrant valve is preferably closed by the air supply coupling or the lanyard provided in the hydrant valve.

  Further, in the tank lorry equipped with the hydrant valve dynamic test device, it is preferable that the pressure regulating valve is closed after the hydrant valve is closed.

  In the tank lorry equipped with the hydrant valve dynamic test device, the opening and closing of the hydrant valve, the opening and closing control of the opening and closing control handle, and the control of the pressure adjusting valve are performed by compressed air. Compressed air supplied from an air tank for a tank lorry brake is preferably used.

  In addition, it is preferable to provide a device for extracting fuel from the fuel pipe for quality control of the fuel in the fuel pipe buried in the ground connecting the hydrant valve from the storage tank in the airport premises in the hydrant system.

  According to the tank lorry equipped with the hydrant valve dynamic test apparatus of the present invention, it is possible to perform a hydrant valve dynamic test without using a servicer and a fuel receiving vehicle or a servicer and an aircraft.

1 is a schematic side view of an embodiment of a tank lorry equipped with a hydrant valve dynamic test apparatus of the present invention. 1 is a schematic rear view of an embodiment of a tank lorry equipped with a hydrant valve dynamic test apparatus of the present invention. FIG. 1 is a schematic top view of an embodiment of a tank lorry equipped with a hydrant valve dynamic test apparatus of the present invention. FIG. It is a schematic sectional drawing which shows the state inside a tank. It is a schematic explanatory drawing of the air supply to the handle for hydrant valve opening / closing control, the hydrant valve, and the pressure regulating valve. It is a schematic block diagram of one Embodiment of the dynamic test apparatus of the hydrant valve of this invention. It is explanatory drawing about a hydrant system.

  A tank lorry equipped with a hydrant valve dynamic test apparatus of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic side view showing an embodiment of a tank lorry equipped with a hydrant valve dynamic test apparatus according to the present invention, FIG. 2 is a schematic rear view thereof, and FIG. 3 is a schematic top view thereof.

  As shown in FIGS. 1, 2, and 3, a tank lorry 1 (hereinafter simply referred to as a tank lorry 1) provided with a hydrant valve dynamic test apparatus includes a tank lorry body 10 and a hydrant valve dynamic test apparatus 2 (hereinafter referred to as “tank lorry valve dynamic test apparatus 2”). Simply referred to as a dynamic test apparatus 2).

  The dynamic test apparatus 2 includes at least an intake coupler 20 connectable to the discharge port of the hydrant valve 33, a hydrant valve opening / closing control handle 22, an air supply coupling 220, a pressure adjusting valve 23, a fuel flow rate. A total 24, a tank 25 for storing aviation fuel (hereinafter simply referred to as fuel), and a drop pipe 26 for introducing the fuel from the upper part of the tank 25 are provided. The intake coupler 20, the pressure adjustment valve 23, the fuel flow meter 24, and the drop pipe 26 are connected so that the fuel discharged from the hydrant valve 33 can be introduced into the tank 25 at a predetermined flow rate. .

  As shown in FIG. 7, the hydrant valve 33 is an apparatus that serves as an outlet for fuel pumped by the fuel supply pump 31 through a fuel pipe 32 embedded in an apron where an aircraft is parked in an airport hydrant system. The hydrant valve 33 can be opened and closed by supplying and shutting off air. That is, the pumped fuel is opened and supplied by supplying air to the hydrant valve 33, and the supply is stopped by shutting off the air and stopped. Supplying and shutting off air to the hydrant valve 33 is performed by operating a hydrant valve opening / closing control handle 22 described later.

  The tank lorry body 10 can be used without particular limitation as long as it is a tank lorry provided with a storage tank that is generally used for transporting liquids such as petroleum and chemicals. The tank lorry 1 of the present embodiment has a configuration in which the dynamic test apparatus 2 is attached to the tank lorry body 10. In addition, the tank lorry main body 10 remains as a normal tank lorry as it is, and can be used as a normal tank lorry when the dynamic test apparatus 2 of the present invention is not used.

  Below, each structural member of the dynamic test apparatus 2 attached to the tank lorry main body 10 is demonstrated.

  The intake coupler 20 is a member that is connected to the discharge port of the hydrant valve 33 and supplies fuel through the intake hose 21. The intake coupler 20 may be the same as a known intake coupler attached to a servicer used for supplying fuel from a hydrant valve 33 to an aircraft fuel tank.

  In the tank lorry 1 of the present embodiment, the intake coupler 20 and the intake hose 21 are mounted on the side surface of the tank lorry body 10 so as to protrude from the vehicle width. I can't. Therefore, in the tank lorry 1, the intake coupler 20 and the intake hose 21 can be removed and are not protruded from the vehicle width. Thereby, it can drive | work on a general public road in the removed state.

  The handle 22 for opening / closing control of the hydrant valve 33 is usually called a deadman handle, and is an apparatus that allows the operator to open and close the hydrant valve 33 at hand. Air for opening / closing the hydrant valve 33 is supplied to the hydrant valve opening / closing control handle 22 (hereinafter, abbreviated as “Detman handle”). Then, air is supplied to the hydrant valve 33, the hydrant valve 33 is opened and fuel supply can be started. By releasing the air, the supply of air to the hydrant valve 33 is shut off, and the hydrant valve 33 is closed and the fuel is supplied. Supply can be stopped. The deadman handle 22 can be the same as the known deadman handle 22 attached to the servicer.

  The pressure adjustment valve 23 is provided for adjusting the flow rate of the fuel supplied via the intake coupler 20, and is an adjustment valve for reproducing the actual fuel supply flow rate when supplying fuel to the aircraft. is there. The pressure adjusting valve 23 is a valve that automatically closes by releasing the deadman handle 22 and shutting off air.

  The fuel flow meter 24 is a device for measuring and displaying the flow rate of the fuel adjusted by the pressure adjustment valve 23, and includes a flow rate measurement unit 240 and a flow rate display unit 241. The fuel flow meter 24 is not particularly limited as long as it can accurately measure and display the flow rate of the fuel. For example, a pulse transmission type can be used as the flow rate measurement unit 240, and the flow rate display As the unit 241, an analog display type counter type used in a conventional servicer or a digital display type counter type can be used.

  In the dynamic test apparatus 2 of the present embodiment, since it is necessary to accurately grasp the stop of the fuel flow, the flow rate measurement unit 240 is a pulse transmission type and the flow rate display unit 241 is a digital display type counter type fuel. The flow meter 24 can be preferably used. The power for operating these fuel flow meters 24 can be supplied from a vehicle 12V battery provided in advance in the tank lorry body 10.

  The flow rate display unit 241 of the fuel flow meter 24 is preferably provided with a counter that displays the total amount of fuel supplied in addition to a counter that displays the flow rate. Thereby, it is possible to easily grasp the fuel supply amount with respect to the total storage amount of the tank 25 described later.

  The tank 25 is provided on the downstream side of the fuel flow meter 24, and stores the supplied fuel, and corresponds to a fuel tank of an aircraft. In the dynamic test apparatus 2 of the present embodiment, the tank 25 uses a transport storage tank provided in the tank lorry body 10 as it is. FIG. 4 is a schematic sectional view of the tank 25 of the tank lorry 1. The inside of the tank 25 of the tank lorry 1 of this embodiment is divided into three chambers, and the three chambers are connected at the bottom of the tank 25. Further, the dynamic test apparatus 2 of the present embodiment is characterized in that the fuel is supplied into the tank 25 from the upper part of the tank 25, and a drop pipe 26 is provided on the upper part of the tank 25. The drop pipe 26 is vertically connected from the upper part of the tank 25 to the vicinity of the bottom part of the tank 25, and the fuel discharged from the lower part of the tank 25 is finally stored evenly in the three chambers of the tank 25. It is like that.

  In a normal tank lorry, the liquid (fuel) to be stored is supplied into the tank from the lower part of the tank, and discharged from the unloading piping at the lower part of the tank. However, when fuel is supplied from the lower part of the tank 25, there is a concern that the fuel will be scattered from the manhole at the upper part of the tank 25 at a predetermined flow rate and pressure in the dynamic test. On the other hand, in the dynamic test apparatus 2 of the present embodiment, by supplying fuel from the drop pipe 26 at the top of the tank 25, stable fuel supply at a high pressure and a large flow rate can be realized.

  Of the configuration of the dynamic test apparatus 2 of the present embodiment, the hydrant valve 33, the deadman handle 22 and the pressure adjustment valve 23 are controlled by supplying air. The supplied air is provided in the tank truck body 10. The air in the brake air tank 4 is used. FIG. 5 is a schematic explanatory diagram of air supply to the deadman handle 22, the hydrant valve 33 and the pressure adjustment valve 23.

  In order to improve the reliability of air supply, the air in the air tank 4 is handled by a deadman handle via a protection valve 40 having a check valve and a filter regulator 41 for removing moisture in the air and adjusting the pressure. 22 is supplied. In this case, the set pressures of the protection valve 40 and the filter regulator 41 take into consideration the range in which the opening pressure of the protection valve 40 is 0.55 MPa or more, the closing pressure is 0.49 MPa or less, and the filter regulator 41 is in the range of 0.6 to 0.8 MPa. Is done.

  The air thus adjusted to the specified pressure and supplied to the deadman handle 22 is supplied to the hydrant valve 33 and the pressure adjusting valve 23 by the operation of the deadman handle 22. An air regulator 42 is provided between the deadman handle 22 and the hydrant valve 33, and air is supplied to the hydrant valve 33 with an appropriate pressure by operating the deadman handle 22. As the set pressure of the air regulator 42 between the deadman handle 22 and the hydrant valve 33, usually about 0.5 to 0.8 MPa is considered.

  Further, the deadman handle 22 is connected to the pressure adjusting valve 23. Here, in the air supply configuration of the present embodiment, since the hydrant valve 33 and the pressure adjustment valve 23 are branched and connected in parallel to the deadman handle 22, when no adjustment is made, the air supply state is When the deadman handle 22 is operated to stop the air supply, the hydrant valve 33 and the pressure adjustment valve 23 are simultaneously closed.

  Here, in the dynamic test of the hydrant valve 33 in the present embodiment, it is necessary to accurately measure the time from when the hydrant valve 33 is closed until the flow rate displayed on the fuel flow meter 24 stops. In addition, if the hydrant valve 33 and the pressure adjustment valve 23 are closed at the same time, the time until the flow rate stops may not be measured accurately.

  Therefore, in this embodiment, an air regulator 43, an air speed regulator 44, a check valve 45 and an exhaust valve 46 are provided between the deadman handle 22 and the pressure regulating valve 23, and the operation of the pressure regulating valve 23 is the hydrant valve 33. It can be adjusted so that it operates later than the closing. As a specific set pressure of the air regulator 43, about 0.1 to 0.5 MPa lower than the set pressure between the deadman handle 22 and the hydrant valve 33 is considered.

  Further, the air supply pressure of the hydrant valve 33, the deadman handle 22 and the pressure adjusting valve 23 from the air tank 4 can be sequentially confirmed by a pressure gauge 47 provided therebetween. This makes it possible to measure the time until the fuel flow rate stops reliably and accurately.

  Below, the procedure of the dynamic test of the hydrant valve 33 using the tank lorry 1 of one Embodiment of this invention is demonstrated. In FIG. 6, the schematic block diagram of the dynamic test apparatus 2 of this invention is shown.

  First, the tank lorry 1 is stopped near the dual type hydrant valve 33 by air control and lanyard provided in the apron, and the discharge port of the hydrant valve 33 and the intake coupler 20 are connected. In addition, an air supply coupling 220 at the end of the air hose from the deadman handle 22 is connected to the hydrant valve 33.

  Next, air is supplied to the deadman handle 22 from the brake air tank 4 of the tank lorry 1. Then, after confirming that fuel can be discharged from the hydrant valve 33 and fuel can be supplied from the intake coupler 20 into the tank 25 for the operation test and flow rate adjustment, the hydrant valve 33 is opened by grasping the deadman handle 22. Then, the fuel is introduced into the tank 25 through the pressure regulating valve 23 and the fuel flow meter 24. At this stage, the air supply state of the deadman handle 22, the hydrant valve 33 and the pressure adjustment valve 23 is confirmed, and the fuel flow rate state is confirmed by the fuel flow meter 24.

  After the operation test is completed, a stopwatch is prepared for the actual inspection, the deadman handle 22 is gripped, the hydrant valve 33 is opened, and fuel is introduced into the tank 25. Then, the fuel flow meter 24 is checked to confirm that the predetermined fuel flow rate has been reached. Next, the air supply coupling 220 is removed, the hydrant valve 33 is closed, and at the same time, the stopwatch is operated, and the time until the flow rate value of the fuel flow meter 24 becomes 0 or minus is measured. This completes the hydrant valve dynamic test. If the measurement result is not within the range of 2 to 5 seconds, the hydrant valve 33 is adjusted or replaced.

  The hydrant valve 33 for performing the dynamic test is a type in which the hydrant valve 33 is closed by an operation of removing the air supply coupling 220, and the hydrant valve 33 is pulled by pulling an emergency stop member called a lanyard. There are types that can be closed.

  In the dynamic test of the hydrant valve using the tank lorry 1 of the present invention, the hydrant valve 33 having only the lanyard can be inspected in addition to the dual hydrant valve 33 by the air control and the lanyard. In this case, as the actual inspection, the pit valve 33 is closed by pulling the lanyard while holding the deadman handle 22 and opening the hydrant valve 33 to introduce fuel into the tank 25. Then, the time from when the lanyard is drawn until the flow value of the fuel flow meter 24 becomes 0 or minus is measured. Thereby, the dynamic test of the hydrant valve 33 provided with the lanyard can be performed.

  The fuel in the tank 25 that has been inspected can be easily transferred to a predetermined storage tank through an unloading pipe and a suction / discharge pump provided at a lower portion of the tank 25 provided in the tank lorry body 10. .

  The dynamic test of the hydrant valve using the tank lorry 1 of the present invention can be performed by the above procedure without using a servicer and a fuel receiving vehicle or a servicer and an aircraft.

  In addition, according to the present invention, the tank lorry equipped with the hydrant valve dynamic test apparatus of the present invention is used for fuel transportation as a normal tank lorry, and of course, the hydrant valve 33 from the storage tank 30 in the airport premises in the hydrant system. Can be used as an apparatus for extracting fuel from the fuel pipe 32 for quality control of the fuel in the fuel pipe 32 buried in the ground.

DESCRIPTION OF SYMBOLS 1 Tank lorry provided with hydrant valve dynamic test device 10 Tank lorry body 2 Hydrant valve dynamic test device 20 Intake coupler 22 Open / close control handle (Detman handle)
220 Air supply coupling 23 Pressure adjustment valve 24 Fuel flow meter 25 Tank 26 Drop piping 33 Aviation fuel supply valve (hydrant valve)
4 Air tank

Claims (5)

It has a tank lorry body and a hydrant valve dynamic test device,
The hydrant valve dynamic test equipment is:
At least an intake coupler connectable to the discharge port of the hydrant valve;
A handle for opening and closing the hydrant valve;
An air supply coupling;
A pressure regulating valve;
A fuel flow meter,
A tank for storing aviation fuel;
A drop pipe for introducing aviation fuel from the upper part of the tank,
The intake coupler, the pressure adjustment valve, the fuel flow meter, and the drop pipe are connected so that aviation fuel discharged from the hydrant valve can be introduced into the tank at a predetermined flow rate,
The hydrant valve is opened by the opening / closing control handle so that the time from when the aviation fuel is flowed at a predetermined flow rate to when the hydrant valve is closed to stop the flow of aviation fuel can be measured. Tank lorry equipped with the characteristic hydrant valve dynamic test equipment.   The tank lorry having a hydrant valve dynamic test apparatus according to claim 1, wherein the hydrant valve is closed by a lanyard provided in the hydrant valve or the air supply coupling.   The tank lorry having a hydrant valve dynamic test device according to claim 1 or 2, wherein the pressure regulating valve is closed after the hydrant valve is closed.   The opening and closing of the hydrant valve, the opening and closing control of the opening and closing control handle, and the control of the pressure adjusting valve are performed by compressed air, and the compressed air supplied from the tank tanker brake air tank is used as the compressed air. A tank lorry comprising the hydrant valve dynamic test device according to any one of claims 1 to 3. A device for extracting fuel from the fuel pipe is provided for quality control of the fuel in the fuel pipe buried in the underground connecting the hydrant valve from the storage tank in the airport site in the hydrant system. Item 5. A tank truck including the hydrant valve dynamic test device according to any one of Items 1 to 4.

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