JP6035382B1 - Automatic fuel supply system - Google Patents

Abstract

An automatic fuel replenishment system that can reliably replenish fuel from a fuel replenishment tank to a fuel receiving tank. A fuel replenishing section comprising a fuel feed pump that sucks and discharges fuel from a fuel replenishment tank, a fuel feed pipe feed line that feeds the discharged fuel, and a fuel feed hose section. And a fuel receiving section 9 having a fuel introduction pipe line 8 for introducing fuel into the fuel receiving tank 7, and a first on-off valve 17 in the fuel feed pipe feed line and a first fuel supply pipe line in the fuel feed pipe line. A first control unit 31 that provides a second on-off valve 28, closes the second on-off valve when the fuel level in the fuel receiving tank is equal to or higher than a set level, and opens the second on-off valve when the level is lower than the level; When the pressure on the secondary side of the 1 on-off valve is equal to or higher than the set pressure, the first on-off valve is closed and the drive of the oil feed pump is stopped, and when the pressure is lower than the set pressure, the oil feed pump is driven. And second control to open the first on-off valve With a 20. [Selection] Figure 1

Description

  The present invention relates to an automatic fuel supply system for automatically supplying fuel to a fuel consuming device such as an automobile located at a remote place where proximity is difficult.

For example, when a fuel consuming device such as an internal combustion engine such as an automobile or a machine or an air conditioner is operated continuously for a long time, the fuel in the fuel tank (hereinafter referred to as a fuel receiving tank) of the fuel consuming device is not lost. , Always have to refuel.
Conventionally, as a means for replenishing a fuel receiving tank that contains fuel in a fuel consuming device that operates continuously for a long time, a fuel replenishing tank that stores fuel to be replenished and a fuel receiving tank are connected by an oil feeding hose, There is a fuel replenishing means for sending fuel from a fuel replenishing tank to a fuel receiving tank with an oil feed pump (see, for example, Patent Document 1).

  The fuel replenishing means described in Patent Document 1 lays a signal cable between the fuel receiving tank and the oil feed pump, and always detects the remaining fuel level in the fuel receiving tank by the remaining fuel sensor. A level signal indicating the remaining fuel level in the fuel receiving tank is sent to the oil pump via a signal cable, and fuel supply from the fuel replenishing tank to the fuel receiving tank is automatically replenished and stopped by on / off control of the fuel pump. Is going to.

Japanese Patent No. 5695790

  According to the fuel replenishing means described in Patent Document 1 above, a level signal for on / off control of fuel replenishment and stoppage from the fuel replenishing tank to the fuel receiving tank is sent between the fuel receiving tank and the oil feed pump. Since transmission is performed using a signal cable laid in between, there is a possibility that a malfunction such as dielectric failure, or a situation where operation cannot be continued due to disconnection, ground fault, or the like may occur.

The purpose of the present invention is to eliminate the problem of malfunction due to dielectric, disconnection, ground fault, etc., and the inability to continue operation by eliminating the need for a signal cable laid between the fuel receiving tank and the oil pump. It is an object of the present invention to provide an automatic fuel replenishment system capable of reliably replenishing fuel from a fuel replenishing tank to a fuel receiving tank.
Another object of the present invention is to provide an automatic fuel supply system that can supply fuel to a plurality of fuel receiving tanks.

In order to achieve the above object, the invention according to claim 1 is directed to a fuel supply tank, an oil feed pump that sucks and discharges fuel from the fuel supply tank, and delivers fuel discharged from the oil feed pump. A fuel replenishment section having a fuel feed pipe feed line, a fuel feed hose section having a hose connected to the fuel feed pipe feed line on the primary side, a fuel receiving tank, and a fuel feed hose section on the primary side. And at least one fuel receiving portion connected to the secondary side and provided with a fuel introduction pipe line for introducing fuel into the fuel receiving tank, and is first opened and closed in the fuel feed pipe feed line of the fuel supply portion A valve is provided, a second on-off valve is provided in the fuel introduction pipe line of the fuel receiving portion, and the fuel level in the fuel receiving tank exceeds the predetermined level when the fuel level is higher than a preset level. A first control unit that closes the second on-off valve provided in the introduction pipe line and opens the second on-off valve when the level is lower than a preset level; and the first on-off valve in the fuel feed pipe feed line When the pressure on the secondary side becomes equal to or higher than a preset pressure, the first on-off valve is closed and the oil pump is stopped, and the secondary-side pressure of the first on-off valve is preset. A second control unit that drives the oil pump and opens the first on-off valve when the pressure is less than or equal to a predetermined pressure, and when the second on-off valve is open, The secondary side pressure is equal to or lower than a preset pressure .

  According to the first aspect of the present invention, when the fuel level in the fuel receiving tank becomes equal to or higher than a preset level, the first control unit controls the first level provided in the fuel introduction pipe line. 2 The on-off valve closes. By closing the second on-off valve, the pressure on the primary side of the second on-off valve increases. When the pressure on the secondary side of the first on-off valve in the fuel feed pipe feed line becomes equal to or higher than a preset pressure due to a rise in the pressure on the primary side of the second on-off valve, the second control unit controls the second on-off valve. As a result, the first on-off valve is closed and the drive of the oil feeding pump is stopped. As a result, the replenishment of fuel in the fuel receiving tank is stopped, and a high pressure state is established between the secondary side of the first on-off valve and the primary side of the second on-off valve in the fuel feed pipe feed line. Kept.

  Further, when the fuel level in the fuel receiving tank becomes equal to or lower than a preset level, the second control valve provided in the fuel introduction pipe line is opened by the first control unit to open the fuel feed line. The fuel between the secondary side of the first on-off valve in the oil pipe feed line and the primary side of the second on-off valve provided in the fuel introduction pipe line flows to the secondary side of the second on-off valve, The pressure between the secondary side of the first on-off valve and the primary side of the second on-off valve decreases. And when the pressure on the secondary side of the first on-off valve in the fuel feed pipe feed line becomes equal to or lower than a preset pressure, the fuel feed pump is driven and controlled by the second control unit. The first on-off valve opens. Thereby, replenishment of the fuel in the fuel receiving tank is started.

In this way, fuel can be automatically and reliably supplied from the fuel supply tank to the fuel receiving tank, and fuel supply / stop control from the fuel supply tank to the fuel receiving tank can be performed. That is, the on / off control of the oil feed pump and the on / off control of the first on-off valve and the second on-off valve are controlled by receiving a fuel level signal in the fuel receiving tank. Since it is performed by detecting the pressure in the feed line, there is no need for a signal cable laid between the fuel receiving tank and the oil feed pump as described in Patent Document 1, Problems such as inability to continue operation due to disconnection, ground fault, etc. do not occur.
When the second on-off valve is open, the pressure on the secondary side of the first on-off valve is equal to or lower than a preset pressure, so the fuel level in the fuel receiving tank is equal to or lower than a preset level. When the second on-off valve is opened and the pressure on the secondary side of the first on-off valve is equal to or lower than a preset pressure, the oil feed pump is driven and the first on-off valve is opened to accept the fuel. Fuel is reliably supplied to the fuel receiving tank until the fuel level in the tank becomes equal to or higher than a preset level.

According to a second aspect of the invention, according to claim 1, the first flow control orifice provided in the secondary side of the line of the first on-off valve in the fuel oil feed pipe feeding line of the fuel supply unit, the fuel A second flow rate control orifice is provided in a primary side line of the second on-off valve in the fuel introduction pipe line of the receiving unit, and the second control unit serves as a guide for controlling the first on-off valve and the fuel pump. The pressure on the secondary side of the first on-off valve in the fuel feed pipe feed line is the pressure on the secondary side of the first flow control orifice.

According to a second aspect of the present invention, the first flow control orifice provided in the secondary line of the first on-off valve in the fuel oil feed pipe feed line, and the second on-off valve in the fuel introduction pipe line The first flow control orifice and the second flow control orifice orifice so that the flow rate and pressure of the fuel between the second flow control orifice provided on the primary line of the first and second flow control orifices are within the set constant flow range and constant pressure range. By setting the hole diameter, it is possible to maintain the pressure between the first flow rate control orifice and the second flow rate control orifice at the set pressure in the state of oil feeding, in the fuel introduction pipe line. When the second on-off valve is opened and closed, the pressure on the secondary side of the first flow control orifice can be accurately detected.
Thus, when the fuel level in the fuel receiving tank becomes equal to or higher than a preset level, the second on-off valve provided in the fuel introduction pipe line is opened and closed under the control of the first control unit. And controlled by a second control unit that detects the pressure on the secondary side of the first flow control orifice, which changes as the second on-off valve is opened and closed, and the first on-off valve opens and closes and the oil feed pump By turning on and off, fuel can be replenished and stopped in the fuel receiving tank accurately and reliably.

According to a third aspect of the present invention, the pressure on the secondary side of the first on-off valve in the fuel oil feed line is preliminarily applied to the second control unit according to any one of the first or second aspects. Delay that causes the first on-off valve to be closed and the oil pump to be stopped after a preset time has elapsed from the detection of a preset pressure, which is performed when the pressure exceeds a preset pressure. A timer is provided.

According to the third aspect of the present invention, the fuel level change into the fuel receiving tank is severe, and the fuel level in the fuel receiving tank frequently repeats above a preset level and below a level. In the state, it is possible to avoid the opening and closing of the first on-off valve and the on / off of the oil feed pump which are frequently performed so as to follow this, and the first on-off valve and the oil feed pump Wear can be prevented.

According to a fourth aspect of the present invention, in the second control unit according to any one of the first to third aspects, a pressure on a secondary side of the first on-off valve in the fuel feed pipe feed line is preliminarily set. Oil supply that starts when the pressure becomes lower than the preset pressure and stops the oil feed pump after the preset time has elapsed when the preset pressure does not reach the preset pressure within the preset time. A pump automatic stop timer is provided.

According to the invention described in claim 4 , for example, when the fuel leaks due to the hose breakage of the fuel oil hose portion, the oil feed pump can be automatically stopped, and the damage due to the fuel leakage is minimized. To the limit.

Invention of Claim 5 connects a discharge pipe line to the discharge port of the said oil feeding pump of any one of Claims 1 thru | or 4 , branches the said discharge pipe line, one side is said The fuel feed pipe feed line is a fuel feed pipe return line that returns the fuel discharged from the other to the fuel supply tank, and the fuel feed pipe return line controls the delivery pressure of the fuel pump. A control valve is provided.

According to the fifth aspect of the present invention, when there is a change in the fuel discharge flow rate by the oil feed pump, and the fuel discharge pressure by the oil feed pump exceeds a preset constant pressure, the oil feed pump discharge pressure A part of the fuel discharged from the oil feed pump is returned to the fuel supply tank from the fuel feed pipe return line by the control of the control valve, so that the pressure on the primary side of the first flow control orifice can be kept constant. The fuel can be sent out to the fuel feed pipe feed line in an appropriate flow rate range.

Invention of Claim 6 has several hose connection ports which connect a fuel oil hose part to the secondary side of the said fuel oil pipe feed line of any one of Claim 1 thru | or 5 A hose connection header is provided.

According to the sixth aspect of the present invention, fuel can be replenished to the plurality of fuel receiving tanks by connecting the fuel supply hose portions to the plurality of hose connection ports of the hose connection header, respectively.
The invention according to claim 7, according to any one of claims 1 to 6, characterized in that the fuel receiving tank of the fuel receiving part is fuel tank of a vehicle equipped with a water supply system .
According to the invention described in claim 7 , it is possible to prevent the fuel of the engine for driving the submersible pump for taking water or the water pump for taking water from the reservoir, river, sea, or the like from being lost. A stop can be eliminated and a large amount of water can be delivered continuously by unmanned operation.

  According to the fuel replenishment system of the present invention, the fuel replenishment / stop control from the fuel replenishment tank to the fuel receiving tank, that is, the on / off control of the oil feed pump is performed at the level of the fuel level in the fuel receiving tank. This is done by detecting the pressure in the fuel feed pipe feed line that is controlled in response to the signal, so the signal that transmits the level signal of the fuel level in the fuel accept tank between the fuel accept tank and the feed pump Since there is no need to lay cables, problems such as malfunction due to dielectrics, disconnection, and inability to continue operation due to ground faults do not occur, and fuel supply from the fuel supply tank to the fuel receiving tank can be reliably and stably performed. It can be carried out.

BRIEF DESCRIPTION OF THE DRAWINGS It is schematic structure explanatory drawing which shows an example of embodiment of the automatic fuel supply system which concerns on this invention.

Hereinafter, an example of an embodiment of an automatic fuel supply system according to the present invention will be described in detail with reference to the drawings.
The fuel replenishment system of this example includes a fuel replenishment tank 1, a fuel feed pump 2 that sucks and discharges fuel from the fuel replenishment tank 1, and a fuel feed pipe feed line 3 that feeds fuel discharged from the fuel feed pump 2. A fuel supply hose portion 6 having a hose 5 connected to the fuel oil feed pipe feed line 3 on the primary side, a fuel receiving tank 7 for fuel, and a fuel oil supply hose portion 6 on the primary side. And a fuel receiving portion 9 having a fuel introduction pipe line 8 for introducing the fuel into the fuel receiving tank 7.

More specifically, first, in the fuel replenishing unit 4, the fuel replenishment tank 1 and the suction port of the oil feed pump 2 are connected to the oil suction pipe line 10, and the discharge pipe 11 is connected to the discharge port of the oil feed pump 2. Is connected. The discharge pipe line 11 branches in the middle, one of which is the aforementioned fuel feed pipe feed line 3 and the other is the fuel feed pipe return line 12 which returns the discharged fuel to the fuel supply tank 1.
In the oil feed pump 2, an efficient centrifugal pump is used over a wide flow rate range in this example, but the present invention is not limited to this.

  The fuel feed pipe return line 12 is provided with an oil feed pump discharge pressure control valve 13 for controlling the discharge pressure of the oil feed pump 2. The oil feed pump discharge pressure control valve 13 discharges from the oil feed pump 2 when there is a change in the fuel discharge flow rate by the oil feed pump 2 and the fuel discharge pressure by the oil feed pump 2 exceeds a preset constant pressure. A part of the fuel is returned from the fuel feed pipe return line 12 to the fuel supply tank 1 so that the pressure on the primary side of the first flow rate control orifice described later is kept constant.

  In the fuel feed pipe feed line 3, a hose connection header 16 having a hose connection port 15 provided with an on-off valve 14 is provided at the secondary end, and the hose 5 of the fuel feed hose part 6 is attached and detached. It is designed to be connected as possible. In this example, the hose connection header 16 has a plurality of hose connection ports 15.

  Further, the fuel oil feed pipe feed line 3 is provided with a first on-off valve 17 which is controlled by a second control unit which will be described later and opens and closes. The fuel oil feed pipe feed line is provided on the secondary side of the first on-off valve 17. 3 is provided with a first flow rate control orifice 18 for controlling the flow rate of the fuel flowing through the secondary side 3 to a set flow rate.

  Further, the fuel replenishing unit 4 closes the first on-off valve 17 and the oil feed pump when the pressure on the secondary side of the first on-off valve 17 in the fuel feed pipe feed line 3 becomes equal to or higher than a preset pressure P1. 2 is stopped, and when the pressure on the secondary side of the first on-off valve 17 becomes equal to or lower than a preset pressure P2, the first on-off valve 17 is opened and the drive unit 19 of the oil feed pump 2 is turned on. A second control unit 20 that is activated is provided.

  In this example, a pressure sensor 21 for detecting the pressure on the secondary side of the first flow control orifice 18 is provided in the fuel feed pipe feed line 3, and the pressure on the secondary side of the first flow control orifice 18 is previously set. When the pressure becomes equal to or higher than the set pressure P1, the signal H1 is transmitted. When the pressure becomes equal to or lower than the preset pressure P2, the signal L1 is transmitted.

  When the pressure P1 and the pressure P2 are based on the pressure P3 on the secondary side of the first flow control orifice 18 in the state in which fuel is supplied (fueled) from the fuel supply unit 4 to the fuel receiving unit 9, P1> The relationship of P3, P1> P2 is set.

In this example, the second control unit 20 includes delay timers 22 and 23. When the signal H1 of the pressure P1 is received from the pressure sensor 21, the second control unit 20 performs the first opening / closing after elapse of a preset time from the time of reception. The valve 17 is closed and the drive unit 19 of the oil feed pump 2 is stopped. The delay time for closing the first on-off valve 17 and the delay time for stopping the drive unit 19 of the oil feed pump 2 may be the same, but the delay time for stopping the drive unit 19 of the oil feed pump 2 is made longer. It is preferable. In this example, after the first on-off valve 17 is closed by the operation of the delay timer 22, the drive unit 19 of the oil feed pump 2 is stopped by the operation of the delay timer 23.
In addition, when the delay timers 22 and 23 do not operate normally due to a failure or the like, the second control unit 20 closes the first on-off valve 17 when the pressure sensor 21 receives the signal H1 of the pressure P1 from the pressure sensor 21 and sends it. The drive machine 19 of the oil pump 2 is stopped.
Further, when the second control unit 20 receives the signal L1 of the pressure P2 from the pressure sensor 21, the second control unit 20 starts the drive unit 19 of the oil feed pump 2 and opens the first on-off valve 17. In this example, when the signal L1 of the pressure P2 is received, the drive unit 19 of the oil feed pump 2 is immediately activated, and then the first on-off valve 17 is opened.

Further, in this example, the second control unit 20 starts from the time when the signal P1 of the pressure P2 is received from the pressure sensor 21, and is set to a pressure set in advance within a preset time T, in this example, the pressure P2. An oil feed pump automatic stop timer 24 is provided that stops the drive unit 19 of the oil feed pump 2 and issues an alarm after a preset time T has elapsed when the state that has not been reached continues.
In the oil pump automatic stop timer 24, when the signal H1 of the pressure P1 is received from the pressure sensor 21 within the preset time T, the accumulation time of the oil pump automatic stop timer 24 is set to zero. Is set.

  Although not shown in the present example, an oil feed pump automatic stop timer is separately provided. As a result, the signal H1 of the pressure P1 is received from the pressure sensor 21, the first on-off valve 17 is closed, and the oil feed pump automatic stop timer is actuated by the signal that the closing of the first on-off valve 17 is detected. When the signal L1 of the pressure P2 is received twice from the sensor 21, the drive unit 19 of the oil feed pump 2 is stopped and an alarm is issued.

  In this example, the fuel supply tank 1 is provided with a level sensor 25, and when the fuel in the fuel supply tank 1 becomes lower than the set level, a signal is transmitted to the second control unit 20, and the second control unit 20 Has a function of stopping the drive unit 19 of the oil feed pump 2 when a signal from the level sensor 25 is received.

Next, in the fuel oil supply hose 6, a hose 5 is provided on the primary side of the hose 5, the hose of the fuel supply section 4 of the fuel oil feed pipe hose provided to the feed line 3 connected Header 16 The connection part 26 is detachably connected to the connection port 15, and the connection part 27 is provided on the secondary side of the hose 5 and is detachably connected to the primary side of the fuel introduction pipe line 8 of the fuel receiving part 9. ing. The length of the hose 5 is arbitrarily determined depending on the distance between the fuel supply unit 4 and the fuel receiving unit 9.

Next, in the fuel receiving unit 9, a second opening / closing valve 28 is provided in the fuel introduction pipe line 8 for introducing fuel into the fuel receiving tank 7, and the primary on / off valve 28 in the fuel introduction pipe line 8 is primary. A second flow rate control orifice 29 for controlling the flow rate of the fuel flowing through the fuel introduction pipe line 8 to a set flow rate is provided on the side.
In addition, a hose connection portion 30 that is detachably connected to a connection portion 27 provided on the secondary side of the hose 5 of the fuel feeding hose portion 6 is provided at the primary side end portion of the fuel introduction pipe line 8. .

Further, the fuel receiving unit 9 closes the second on-off valve 28 when the fuel level in the fuel receiving tank 7 becomes equal to or higher than a preset level X1, and the second when the fuel level becomes equal to or lower than a preset level X2. The 1st control part 31 which opens the on-off valve 28 is provided.
In this example, a level sensor 32 for detecting a preset level X1 and a preset level X2 of the fuel level in the fuel receiving tank 7 is provided, and the fuel level in the fuel receiving tank is preset. The signal H2 is transmitted when the level becomes equal to or higher than the level X1, and the signal L2 is transmitted when the level becomes lower than the preset level X2.

  In the fuel replenishment system of this example configured as described above, fuel is replenished from the fuel replenishing tank 1 of the fuel replenishing unit 4 to the fuel receiving tank 7 of the fuel receiving unit 9 as follows.

First, in a state where the first on-off valve 17 provided in the fuel feed pipe feed line 3 of the fuel replenishment section 4 and the second on-off valve 28 provided in the fuel introduction pipe line 8 of the fuel receiving section 9 are opened, the oil feed is performed. The drive unit 19 of the pump 2 is activated.
As a result, the fuel in the fuel supply tank 1 is sucked and discharged to the discharge pipe line 11, and the fuel discharged to the discharge pipe line 11 is the fuel feed pipe feed line 3, the hose 5 of the fuel feed hose section 6, the fuel The fuel flows through the fuel introduction pipe line 8 of the receiving portion 9 and is introduced into the fuel receiving tank 7.

  When the discharge pressure of the fuel discharged from the oil feed pump 2 exceeds a preset constant pressure, the fuel feed pump discharge pressure control valve 13 controls the part of the fuel through the fuel feed pipe return line 12. As a result, the pressure on the primary side of the first flow control orifice 18 is kept constant, and the fuel is always sent to the fuel feed pipe feed line 3 in an appropriate constant flow range.

  Furthermore, in this example, the first flow control orifice 18 is provided on the secondary side of the first on-off valve 17 in the fuel oil feed pipe feed line 3, and the second on the primary side of the second on-off valve 28 in the fuel introduction pipe line 8. Since the flow rate control orifice 29 is provided, the first flow rate / pressure range between the first flow rate control orifice 18 and the second flow rate control orifice 29 is set to a preset constant flow rate range / fixed pressure range. By setting the orifice diameters of the flow rate control orifice 18 and the second flow rate control orifice 29, the flow rate and pressure of the fuel between the first flow rate control orifice 18 and the second flow rate control orifice 29 are set to a constant flow range and constant. Controlled to pressure range.

  In this way, fuel is supplied from the fuel supply tank 1 of the fuel supply unit 4 to the fuel reception tank 7 of the fuel reception unit 9, and the fuel level in the fuel reception tank 7 has reached the preset level X1. When the level sensor 32 detects, the signal H2 is transmitted to the first control unit 31, and the first control unit 31 closes the second on-off valve 28 in the fuel introduction pipe line 8.

  When the second on-off valve 28 in the fuel introduction pipe line 8 is closed, the pressure in the fuel feed pipe feed line 3 increases. When the pressure sensor 21 detects that the pressure on the secondary side of the first on-off valve 17 in the fuel feed pipe feed line 3 has reached a preset pressure P1, a signal H1 is transmitted to the second control unit 20, The 2nd control part 20 stops the drive machine 19 of the oil feed pump 2 after closing the 1st on-off valve 17.

  In this example, as the pressure on the secondary side of the first on-off valve 17 in the fuel feed pipe feed line 3, the pressure on the secondary side of the first flow control orifice 18 that is always maintained at the set pressure in the fuel feed state. Therefore, it is possible to accurately detect a change in pressure on the secondary side of the first flow control orifice 18 when the second on-off valve 28 in the fuel introduction pipe line 8 is closed.

Further, in this example, the second control unit 20 includes delay timers 22 and 23, and when the signal H1 of the pressure P1 is received from the pressure sensor 21, the time set by the delay timer 22 has elapsed since the reception. The first on-off valve 17 is closed, and the drive unit 19 of the oil feed pump 2 is stopped after the time set by the delay timer 23 has elapsed.
As a result, when the fuel level in the fuel receiving tank 7 changes drastically and the fuel level in the fuel receiving tank 7 frequently repeats a preset level X1 or higher and level X2 or lower. Opening and closing of the first on-off valve 17 and starting / stopping of the drive unit 19 of the oil feed pump 2 that are frequently performed to follow can be avoided, and wear of the equipment can be prevented.
In this way, the fuel supply from the fuel supply tank 1 of the fuel supply unit 4 to the fuel reception tank 7 of the fuel reception unit 9 is stopped.

  Further, after the fuel supply to the fuel receiving tank 7 is stopped, the level sensor 32 indicates that the fuel level in the fuel receiving tank 7 has reached the preset level X2 due to the consumption of the fuel in the fuel receiving tank 7. Is detected, a signal L2 is transmitted to the first control unit 31, and the first control unit 31 opens the second on-off valve 28 in the fuel introduction pipe line 8.

  When the second on-off valve 28 in the fuel introduction pipe line 8 is opened, the fuel on the secondary side of the first on-off valve 17 in the fuel feed pipe feed line 3 flows into the fuel receiving tank 7 from the fuel introduction pipe line 8. As a result, the pressure on the secondary side of the first on-off valve 17 in the fuel feed pipe feed line 3 is lowered, and the pressure on the secondary side of the first on-off valve 17 in the fuel feed pipe feed line 3 is set to a preset pressure P2. When the pressure sensor 21 detects that it has become, the signal L1 is transmitted to the second control unit 20, and the second control unit 20 immediately activates the driver 19 of the oil feed pump 2, and then the first on-off valve 17 is turned on. open.

In this example, as the pressure on the secondary side of the first on-off valve 17 in the fuel feed pipe feed line 3, the pressure on the secondary side of the first flow control orifice 18 that is always maintained at the set pressure in the fuel feed state. Therefore, it is possible to accurately detect a change in the pressure on the secondary side of the first flow control orifice 18 when the second opening / closing valve 28 in the fuel introduction pipe line 8 is opened.
Thereby, the fuel supply from the fuel supply tank 1 of the fuel supply unit 4 to the fuel reception tank 7 of the fuel reception unit 9 is resumed.

  Thus, according to the automatic fuel replenishment system of this example, the fuel replenishment / stop control from the fuel replenishment tank 1 to the fuel receiving tank 7, that is, the on / off control of the oil feed pump 2 and the first on-off valve 17. Further, the opening / closing control of the second opening / closing valve 28 is performed by detecting the pressures P1, P2 in the fuel feed pipe feed line 3 controlled by receiving the level signals H2, L2 of the fuel liquid level in the fuel receiving tank 7. Can do.

  Further, in this example, the second control unit 20 starts from the time when the signal P1 of the pressure P2 is received from the pressure sensor 21, and reaches the preset pressure within the preset time T, in this example, P2. Since the oil feed pump automatic stop timer 24 for stopping the drive unit 19 of the oil feed pump 2 is provided after the preset time T has elapsed when the state that is not performed continues, for example, the hose 5 of the fuel oil feed hose section 6 is provided. When the fuel leaks due to damage to the oil pump, the drive unit 19 of the oil feed pump 2 can be automatically stopped.

  Although not shown in the present example, an oil feed pump automatic stop timer is separately provided. When the signal P1 of the pressure P2 is received from the pressure sensor 21 twice within the set time after the signal H1 of the pressure P1 is received from the pressure sensor 21 and the first on-off valve 17 is closed, it is determined that the fuel is leaking. The drive unit 19 of the oil feed pump 2 is stopped and an alarm is issued.

  In this example, the fuel supply tank 1 is provided with a level sensor 25, and when the fuel in the fuel supply tank 1 becomes lower than the set level, a signal is transmitted to the second control unit 20, and the second control unit 20 Has a function of stopping the drive unit 19 of the oil feed pump 2 when a signal from the level sensor 25 is received, so that the oil feed pump 2 can be prevented from idling.

Further, in this example, the hose connection header 16 provided in the fuel feed pipe feed line 3 has a plurality of hose connection ports 15, so that a plurality of fuel receiving portions 9 can be replenished with fuel at the same time.
In replenishing the fuel, the fuel receiving section 9 is configured to have a predetermined flow rate range regardless of whether the number of the fuel receiving sections 9 is single or plural. In this example, the fuel receiving section 9 is provided in the fuel feed pipe feed line 3. This is realized by the first flow control orifice 18, the second flow control orifice 29 provided in the fuel introduction pipe line 8, and the oil feed pump discharge pressure control valve 13 provided in the fuel feed pipe return line 12.
Furthermore, it is preferable that the orifice diameter of the first flow control orifice 18 is larger than the orifice diameter of the second flow control orifice 29 in order to stabilize the operation of the automatic fuel supply system.

  In the automatic fuel supply system according to the present invention configured as described above, for example, a fuel tank such as a fire engine equipped with a water supply system can be used as the fuel receiving tank 7. In this case, it is possible to prevent the fuel of the engine for driving the submersible pump and water pump for taking water from the reservoir, river, sea, etc. from being lost. A large amount of water can be realized by unmanned operation. By using the automatic fuel supply system according to the present invention, for example, it can be used for water supply for cooling nuclear facilities, fire extinguishing with a foam-mixed fire extinguishing system, water transport during a disaster, and the like. Furthermore, in response to natural disasters such as floods, flooding and river flooding, it is possible to discharge a large quantity of water and transport water in an emergency and continuous manner.

DESCRIPTION OF SYMBOLS 1 Fuel supply tank 2 Oil supply pump 3 Fuel supply pipe feed line 4 Fuel supply part 5 Hose 6 Fuel oil supply hose part 7 Fuel reception tank 8 Fuel introduction pipe line 9 Fuel reception part 10 Oil absorption pipe line 11 Discharge pipe line 12 Fuel supply Oil pipe return line 13 Oil supply pump discharge pressure control valve 14 On-off valve 15 Hose connection port 16 Hose connection header 17 First on-off valve 18 First flow control orifice 19 Driver 20 Second control unit 21 Pressure sensor 22, 23 Delay timer 24 Oil feed pump automatic stop timer 25 Level sensors 26, 27 Connection portion 28 Second on-off valve 29 Second flow control orifice 30 Hose connection portion 31 First control portion 32 Level sensor

Claims (7)

A fuel replenishing section comprising a fuel replenishing tank, an oil feed pump that sucks and discharges fuel from the fuel replenishing tank, and a fuel oil feed pipe feed line that delivers the fuel discharged from the oil feed pump; A fuel feed hose part having a hose connected to the oil pipe feed line, a fuel receiving tank, and a fuel introduction wherein the primary side is connected to the secondary side of the fuel feed hose part and fuel is introduced into the fuel receiving tank And a first open / close valve in the fuel feed pipe feed line of the fuel replenishment section, and a second open / close in the fuel introduction pipe line of the fuel accepting section. A valve is provided, and when the fuel level in the fuel receiving tank reaches or exceeds a preset level, the second on-off valve provided in the fuel introduction pipe line is closed and preset. When the pressure on the secondary side of the first on-off valve in the fuel feed pipe feed line is equal to or higher than a preset pressure, the first control unit that opens the second on-off valve when the level becomes lower than the predetermined level And closing the first on-off valve and stopping the driving of the oil feed pump, and driving the oil feed pump when the pressure on the secondary side of the first on-off valve is equal to or lower than a preset pressure. A second control unit configured to open the first on-off valve; and when the second on-off valve is open, a pressure on a secondary side of the first on-off valve is equal to or lower than a preset pressure. Automatic fuel supply system. A first flow rate control orifice is provided in a secondary side line of the first on-off valve in the fuel feed pipe feed line of the fuel replenishment section, and a primary of the second on-off valve in the fuel introduction pipe line of the fuel receiving section. A second flow rate control orifice is provided in the side line, and a secondary side of the first on-off valve in the fuel feed pipe feed line serving as a guide for controlling the first on-off valve and the fuel pump by the second control unit. 2. The automatic fuel supply system according to claim 1, wherein the pressure is a pressure on the secondary side of the first flow control orifice . Closing the first on-off valve and feeding the oil when the pressure on the secondary side of the first on-off valve in the fuel feed pipe feed line becomes equal to or higher than a preset pressure. 3. The fuel according to claim 1 , further comprising a delay timer that stops the driving of the pump after a preset time elapses from when a preset pressure is detected. 4. Automatic replenishment system. The second control unit starts when the pressure on the secondary side of the first on-off valve in the fuel feed pipe feed line is equal to or lower than a preset pressure, and is preset within a preset time. 4. An oil feed pump automatic stop timer for stopping the oil feed pump after a preset time elapses when a state in which the pressure does not reach has continued. 5. The automatic fuel supply system described. Connecting a discharge pipe line to the discharge port of the oil feed pump, branching the discharge pipe line, making one the fuel feed pipe feed line, and returning the fuel discharged from the other to the fuel supply tank 5. The oil feed pump return pressure control valve for controlling the delivery pressure of the oil feed pump is provided in the fuel feed pipe return line . 5. Automatic fuel supply system. 6. The hose connection header having a plurality of hose connection ports for connecting a fuel oil hose portion is provided on the secondary side of the fuel oil feed pipe feed line. Automatic refueling system. The automatic fuel supply system according to any one of claims 1 to 6 , wherein the fuel receiving tank of the fuel receiving unit is a fuel tank of a vehicle equipped with a water supply system.