JP3186620U - Farm fuel tank - Google Patents

Abstract

[PROBLEMS] To provide an easy-to-use agricultural fuel tank capable of preventing the outflow of fuel even when it falls due to a natural disaster such as an earthquake or a tsunami or a human accident.
The fuel tank for farming 1 is configured in a sealed state at all times except for the air vent pipe 12 and the oil feed pipe 9, and when the vibration is detected, the air vent pipe and the oil feed pipe are automatically shut off by a shutoff valve, and The shut-off state is maintained. When a solenoid valve is used as the shut-off valve, the first solenoid valve 16 is attached to the air vent pipe 12, the second solenoid valve 20 is attached to the oil feed pipe 9, and vibration is detected, the first solenoid valve is based on the detection of vibration. And the second solenoid valve is energized and closed. In addition, the first solenoid valve and the second solenoid valve are energized simultaneously.
[Selection] Figure 2

Description

  The present invention relates to a farm fuel tank installed adjacent to an agricultural facility in order to supply fuel to a heating device for heating the agricultural facility.

  In horticultural horticulture where the cultivation environment such as the temperature, fertilizer, atmospheric components, etc. of horticultural crops such as vegetables, fruits, flower buds and foliage plants is artificially controlled, the horticultural house or other agriculture for temperature control The facility is warmed. For this reason, a boiler as a heating device is installed in the facility horticulture house, and heavy oil or other fuel is supplied from a farming fuel tank installed adjacent to the facility horticulture house to burn the boiler.

  Heavy oil, which is often used as fuel, is classified as “Dangerous Goods Class 4 and Type 3 Petroleum” by the Fire Service Act, and if the storage volume exceeds 2000 liters, “Installation Permit” as a storage place is required (Fire Law Article 10) Therefore, in order to avoid the burden of obtaining installation permission, most of the farming fuel tanks used by farmers are around 1900 liters with a storage capacity of less than 2000 liters that can be installed by “reporting” to the fire department. .

  The fuel tank for farming is not only robust, but also a shortage of fuel has a direct impact on the growth of cultivated crops, so it is easy to check the remaining amount, easy to refuel, internal inspection and inspection It is required that cleaning is possible. Therefore, the structure of the farming fuel tank currently used will be described with reference to FIGS.

  In the figure, reference numeral 41 denotes a conventional fuel tank for farming, which is erected by joining a hollow cylindrical body 43 slightly inside the outer peripheral end of a disk-shaped bottom plate 42 and mounted on the upper part of the body 43. A head-conical ceiling portion 44 is joined, and an inspection port 45 is formed at the top of the ceiling portion 44. The inspection port 45 is for an operator to visually inspect and enter and exit the agricultural fuel tank 41 in order to inspect and clean the agricultural fuel tank 41 at regular intervals. It is covered. And the cover part 46 is only fixed in the inspection port 45, and is not fixed. A hollow U-shaped air vent pipe 47 is inserted into the lid portion 46 to communicate the inside of the farming fuel tank 41 with the atmosphere. The inside of the U-shaped air vent pipe 47 functions as an air hole at the time of oil supply or oil supply.

  An oil supply pipe 49 is attached to the ceiling portion 44, and a supply pipe from a heavy oil transport vehicle is connected to the oil supply pipe 49 to supply heavy oil into the farm fuel tank 41. The oil supply pipe 49 is sealed by a cap (not shown) except when oiling. An oil feed pipe 50 is attached to the lower portion of the body portion 43, and a pipe to the boiler is connected to the oil feed pipe 50 via a valve to feed heavy oil to the boiler. Reference numeral 51 denotes a drain pipe attached to the lower end portion of the body portion 43, which is normally sealed by a cap (not shown). Reference numeral 52 denotes an ascending / descending staircase, which is attached so that an operator can ascend / descend from the lower portion of the body portion 43 to the inspection port 45 and the oil supply pipe 49 of the ceiling portion 44.

  Reference numeral 48 denotes a heavy oil remaining amount meter, which is composed of a float 53, a rope 54, a U-shaped insertion tube 55, a remaining amount display guide 56, and a weight 57. The float 53 floats on the level of heavy oil in the fuel tank 41 for farming, and the rope 54 connected to the upper part thereof passes through the hollow U-shaped insertion pipe 55 inserted through the ceiling portion 44 so as to manage the farm. The fuel 57 is led out to the outside of the fuel tank 41 and guided to the concave portion of the remaining amount display guide 56 provided in the vertical direction of the body 43, and a weight 57 is fixed to the tip thereof. The weight 57 is fixed so as to be positioned at substantially the same height as the float 53 when the amount of heavy oil in the farm fuel tank 41 is about half.

  Therefore, when the amount of heavy oil in the farm fuel tank 41 is increased or decreased by refueling from the refueling pipe 49 or by refueling from the refueling pipe 50 to the boiler, the float 53 is also linked to the top and bottom of the level of heavy oil due to the increase or decrease. When the float 53 moves up and down, the weight 57 descends, and when the float 53 descends, the weight 57 rises. Therefore, when the weight 57 moves up and down, the position of the level of heavy oil in the farm fuel tank 41, that is, the remaining amount Can know.

  The farming fuel tank 41 having the above-described structure has a predetermined height H of about 1 m, and is placed adjacent to an agricultural facility by placing a bottom plate 42 on a stand 58 having four legs. Predetermined piping for feeding oil from the oil pipe 50 to the boiler is performed. Supplying and stopping heavy oil to the boiler is performed by opening and closing a valve attached to the oil feeding pipe 50. Note that the gantry 58 is used because a difference in height is given to the piping from the oil feeding pipe 50 to the boiler to facilitate the supply of heavy oil.

  In addition, as a heating device with safety measures against fuel leakage, a heater driven by a gear pump type oil burner, a gear pump type oil burner provided in the heater, a fuel storage tank separated from the heating device, and a part thereof A fuel supply pipe embedded in the ground and connecting the oil burner and the fuel storage tank, and a fuel leakage prevention cutoff valve connected between the fuel outlet and the fuel supply pipe of the fuel storage tank, If the fuel supply pipe is not damaged, the valve is opened by the negative pressure that draws fuel into the gear pump through the fuel supply pipe, and the fuel is drawn into the gear pump through the fuel supply pipe in the state of fuel leakage due to damage to the fuel supply pipe. There is also provided a configuration in which the shut-off valve is pressed against the valve seat by an urging force of an elastic body that keeps the valve closed even by pressure (Patent Document 1).

JP 2010-196934 A

  However, the fuel leakage prevention shut-off valve employed in Patent Document 1 corresponds to leakage due to breakage of the fuel supply pipe, and does not assume damage or overturn of the fuel storage tank itself. As shown in Patent Document 1, the fuel storage tank leakage countermeasure does not assume that the heavy fuel storage tank itself falls or is damaged.

  When the conventional farm fuel tank 41 shown in FIGS. 10 to 12 falls, tilts, breaks, or flows out (hereinafter referred to as a fall) due to an earthquake or other cause, fuel heavy oil leaks from the next location. there is a possibility. If heavy oil is spilled, it will not only affect the cultivated crops, but will also cause serious damage to the soil, making recovery and recovery difficult, and it will flow into rivers and other farmland and adversely affect the ecosystem. End up. Moreover, the cost of the countermeasures must be borne by the owner of the farming tank 41 that stores the spilled heavy oil.

[Inspection port 45]
This is because the lid 46 is only placed on the inspection port 45 and is not fixed to each other, so that the lid 46 is detached due to falling or the like, and the inspection port 45 is easily exposed. Conventionally, since the inspection port 45 is often used for refueling, the lid portion 46 is not fixed.

[Oil feed pipe 50]
A pipe to the boiler is connected to the oil feeding pipe 50 through a valve. For this reason, if the pipe is removed while the valve is open for oil feeding due to a fall or the like, heavy oil flows out from the valve attached to the oil feeding pipe 50.

[U-shaped air vent pipe 47]
The U-shaped air vent pipe 47 is an air hole when fuel oil is fed to the boiler, and communicates with the inside of the farm fuel tank 41 and the atmosphere. Therefore, heavy oil flows out from the U-shaped air vent pipe 47 even if the lid portion 46 does not drop due to a fall or the like.

[Fuel gauge 48]
The weight 57 guided in the remaining amount display guide 56 is connected to the float 53 in the farm fuel tank 41 via the rope 54, and the rope 54 passes through the U-shaped insertion pipe 55 from the farm fuel tank 41. Passed out and led out. Therefore, since the farm fuel tank 41 and the atmosphere communicate with each other by the U-shaped insertion tube 55, heavy oil flows out from the U-shaped insertion tube 55 due to a fall or the like.

  The farming fuel tank 41 having the above-described configuration is a small tank of about 1900 liters, and each farmer installs each horticultural facility, and the number thereof is enormous. Incidentally, the applicant sells more than 2500 units in Kochi Prefecture. The farm fuel tank 41 is obliged to install an oil breakwater, but it is difficult to say that it is always observed, and even if an oil breakwater is installed, the farm fuel tank 41 In the event of a fall due to a natural disaster such as an earthquake or a tsunami or a human accident, leakage of heavy oil from the agricultural fuel tank 41 cannot be prevented.

  Therefore, in order to supply fuel to a heating device for heating agricultural facilities, the present invention is based on the fact that farming fuel tanks installed adjacent to agricultural facilities are subject to natural disasters such as earthquakes and tsunamis, It is an object of the present invention to provide a fuel tank for farming that can prevent the outflow of fuel even when it falls down due to an accident, and is easy to use.

  In order to achieve the above object, the present invention provides a farming fuel tank for supplying fuel to a heating device for an agricultural facility, and when the farming fuel tank is subjected to a certain level of vibration, the vibration The farming fuel tank is sealed and the farming fuel tank that holds the sealed state is provided as a basis.

  The farming fuel tank is always sealed except for the air vent pipe and oil feed pipe. When vibration is detected, the air vent pipe and oil feed pipe are automatically shut off by the shut-off valve and the shut-off state is maintained. When a solenoid valve is used as the shut-off valve, the first solenoid valve is attached to the air vent pipe, the second solenoid valve is attached to the oil feed pipe, and vibration is detected, the first solenoid valve and the second solenoid valve are detected based on the vibration detection. 2 Energize the solenoid valves and close each one. The first solenoid valve and the second solenoid valve are energized simultaneously.

  In addition, the first solenoid valve and the second solenoid valve after the valve closing were manually opened, and the inspection port for inspecting the inside of the farm fuel tank was normally sealed. In addition, it is equipped with a dedicated oiling pipe that can be sealed separately from the inspection port that is normally sealed.

  In addition, a fuel gauge with a liquid-tight structure that does not communicate with the atmosphere is equipped. Pressure gauges are fixed to the upper and lower ends of the farming fuel tank as fuel gauges. By communicating, the fuel in the fuel tank for farming flowed into the pressure pipe, and the level of the fuel in the pressure pipe was made visible. In addition, valves were attached to the upper and lower ends of the pressure pipe, and the fuel gauge was covered with a protective cover.

  According to the present invention, in a farming fuel tank that supplies fuel to a heating device of an agricultural facility, except for the air vent pipe and the oil feeding pipe, it is always kept in a sealed state, and when a certain level of vibration is applied, By detecting the vibration, the air vent pipe and the oil feeding pipe that are always in communication with the atmosphere are urgently shut off, and the farming fuel tank can be sealed, and the sealed state can be maintained.

  Therefore, when the farming fuel tank falls down due to an earthquake or other cause, it is possible to prevent the fuel from flowing out. Since the air vent pipe and the oil feed pipe are urgently shut off by the first solenoid valve and the second solenoid valve, the farm fuel tank can be quickly kept in a sealed state without causing a time lag. Moreover, since the first solenoid valve and the second solenoid valve are manually opened after the valve is closed, the first solenoid valve or the second solenoid valve is opened unintentionally, and fuel does not leak. .

  In addition, the fuel gauge required for checking the fuel level in the farming fuel tank has a liquid-tight structure that does not communicate with the atmosphere, so there is no risk of fuel leaking during a fall, etc. The amount can be easily confirmed.

The front view of the fuel tank for farming concerning this invention. The right view of the fuel tank for farming concerning this invention. The rear view of the fuel tank for farming concerning this invention. The top view of the fuel tank for farming concerning this invention. The main part installation explanatory drawing of the solenoid valve of an air vent pipe. The principal part installation explanatory drawing of the solenoid valve of an oil feeding pipe. The principal part side view of a fuel gauge. The principal part front view of a fuel gauge. Action explanatory drawing of this invention. The fragmentary sectional front view of the conventional fuel tank for farming. The right view of the conventional fuel tank for farming. Explanatory drawing of the principal part of the conventional fuel gauge.

  Hereinafter, an embodiment of a fuel tank for farming according to the present invention will be described with reference to the drawings. 1 is a front view of an agricultural fuel tank 1 according to the present invention, FIG. 2 is a right side view thereof, FIG. 3 is a rear view thereof, and FIG. 4 is a plan view thereof. The fuel oil stored in the farming fuel tank 1 will be described as an example of heavy oil, and the boiler will be described as an example of the heating device. However, any fuel that can be supplied to the farming fuel tank 1 can be refueled / stored / oiled. The kind of fuel is not ask | required. Moreover, the kind of heating apparatus is not ask | required.

  In the figure, reference numeral 1 denotes a farming fuel tank, which is erected by joining a hollow cylindrical body 3 slightly inside the outer peripheral end of a disk-shaped bottom plate 2, and a head cone at the top of the body 3. In addition, the inspection ceiling 5 is opened at the top of the ceiling 4. The inspection port 5 is used for an operator to visually inspect and enter the farm fuel tank 1 to inspect and clean the farm fuel tank 1 at regular intervals. It is covered. The lid portion 6 is fixed to the inspection port 5 in a liquid-tight state by bolts 7a and nuts 7b.

  An oil supply pipe 8 is attached to the ceiling portion 4, and a supply pipe from a heavy oil transport vehicle is connected to the oil supply pipe 8 to supply heavy oil into the farm fuel tank 1. The oil supply pipe 8 is sealed in a liquid-tight state by a cap (not shown) except during oil supply. A hollow oil feeding pipe 9 is attached to the lower portion of the body portion 3, and a valve 18 is attached to the oil feeding pipe 9 (see FIGS. 2 and 6). Reference numeral 10 denotes a drain pipe attached to the lower end portion of the body portion 3 and is normally sealed in a liquid-tight state by a cap (not shown). Reference numeral 11 denotes an ascending / descending staircase attached to the inspection port 5 and the oil supply pipe 8 of the ceiling portion 4 from the lower portion of the trunk portion 3 so that an operator can move up and down.

  As shown in FIG. 5, a hollow air vent tube 12 is inserted through the lid portion 6, and the hollow portion communicates with the atmosphere. After the elbow pipe 14 is connected to the air vent pipe 12 via a nipple 13 and displaced in the direction of 90 degrees, the elbow pipe 14 is provided with a first electromagnetic valve 16 for urgently shutting off the air vent pipe 12 via a nipple 15. It is connected. The first electromagnetic valve 16 is normally open, and the inside of the agricultural fuel tank 1 is always in communication with the atmosphere via the air vent pipe 12. These air vent pipe 12, nipples 13 and 15, elbow pipe 14, and first electromagnetic valve 16 are integrally covered with a protective cover 37 for protection.

  As shown in FIG. 6, a valve 18 is connected to the oil feeding pipe 9 attached to the lower portion of the body portion 3 via a nipple 17, and a first valve serving as an emergency shutoff valve of the oil feeding pipe 9 is connected to the valve 18 via a nipple 19. 2 The solenoid valve 20 is connected. The second electromagnetic valve 20 is normally open, and heavy oil is sent to the boiler or stopped by the opening / closing operation of the valve 18. The oil feed pipe 9, the nipples 17 and 19, the valve 18 and the second electromagnetic valve 20 are integrally covered with a protective cover 38 for protection.

  With the above-described configuration, the farm fuel tank 1 is always kept in a sealed state except for the air vent pipe 12 and the oil feed pipe 9. On the other hand, the fuel tank 1 for farming requires a fuel gauge to check the remaining amount, but in the present invention, a fuel gauge of a liquid-tight structure that is not in communication with the atmosphere has been devised. The configuration will be described below with reference to FIGS.

  Reference numeral 21 denotes a heavy oil fuel gauge, in which valves 23a and 23b are attached to sockets 22a and 22b inserted through upper and lower ends of the body 3 through nipples (not shown), and the pressure pipe 24 is connected to the valves 23a and 23b. Fixtures 25a and 25b fixed to the upper and lower ends are fixed. The sockets 22a and 22b communicate with the inside of the body 3 and communicate with the fixtures 25a and 25b and the pressure-resistant pipe 24 through the valves 23a and 23b. Therefore, by opening the valves 23a and 23b, the heavy oil in the farming fuel tank 1 flows into the pressure-resistant pipe 24 and becomes the same level. Therefore, a float (not shown) inserted into the pressure-resistant pipe 24 is used. The remaining amount of heavy oil in the agricultural fuel tank 1 can be visually confirmed from the outside. Reference numeral 26 denotes a bracket for supporting the pressure-resistant pipe 24, and reference numeral 27 denotes a stay for fixing the pressure-resistant pipe 24 to the bracket 26.

  The pressure-resistant pipe 24 is made of a special synthetic resin having excellent impact resistance and heat resistance of 100 ° C. Even if the farm fuel tank 1 falls down, there is a risk that it will be damaged or cracked. There is no heavy oil spill. Further, from the viewpoint of fail-safe, the entire fuel gauge 21 including the pressure-resistant pipe 24 is covered with a robust metal protective cover 28 as shown in FIG.

  As shown in FIGS. 1 to 3, the farm fuel tank has a predetermined height H of about 1 m, and the bottom plate 2 is placed on a gantry 29 having four legs, By fixing, it installs adjacent to an agricultural facility and pipes a predetermined oil supply pipe from the oil supply pipe 9 to the boiler. By opening and closing the valve 18 attached to the oil feeding pipe 9, heavy oil is supplied to the boiler via the second electromagnetic valve 20, and by closing the valve 18, the supply of heavy oil to the boiler is stopped. At this time, the second electromagnetic valve 20 is always open and is closed only when energized.

  Next, when a certain level or more of vibration is applied to the farming fuel tank, a configuration for detecting the vibration and bringing the farming fuel tank into a sealed state and maintaining the sealed state will be described. 31 is a control box, and as a mechanism for urgently closing the first electromagnetic valve 16 and the second electromagnetic valve 20 in the event of a fall, a seismic sensing device 32, a control circuit 33, a battery 34, an inverter 35, a buzzer Necessary equipment such as 36 is incorporated.

  First, as shown in the operation explanatory diagram of FIG. 9, when an earthquake occurs in step A, the seismic sensing device 32 in the control box 31 senses the vibration as shown in step B and is turned on. Thus, a signal is sent to the control circuit 33. In the present invention, the seismic sensing device 32 is set to detect when an earthquake with an acceleration of 80 gal or more (corresponding to a seismic intensity of less than 5) occurs. The seismic sensing device 32 has a known structure in which a ball-shaped sensor is dropped and sensed by an earthquake.

  The control circuit 33 that has received the earthquake detection signal from the seismic sensing device 32 activates the battery 34 as shown in step D, energizes the buzzer 36 as shown in step E, and turns on the buzzer 36 to sound. Then, the seismic device 32 announces that the earthquake has been detected and alerts it. As the battery 34, a lithium polymer battery excellent in durability was used.

  Further, the control circuit 33 converts the direct current of the battery 34 into an alternating current by the inverter 35 in step F, and energizes the first electromagnetic valve 16 and the second electromagnetic valve 20 simultaneously as shown in steps G and H. Close these immediately. When the first electromagnetic valve 16 is closed, the air vent pipe 12 is closed, so that heavy oil does not flow out of the air vent pipe 12 even if the farm fuel tank 1 falls. Similarly, when the second solenoid valve 20 is closed, even if the piping from the oil feeding pipe 9 to the boiler is damaged due to the fall of the farm fuel tank 1 or the like, the oil feeding pipe 9 is closed. Heavy oil will not spill. The time from when the seismic sensing device 32 detects an earthquake to when the first solenoid valve and the second solenoid valve are closed is 2 to 3 seconds. Then, after the first solenoid valve and the second solenoid valve are closed, after a predetermined time has elapsed (after 2 seconds in the embodiment), the inverter 35 shown in Step F is stopped, the energization is stopped, and the closed state is maintained. To do.

  Recovery after the earthquake is completed manually as follows. First, the buzzer 36 is reset by turning off the seismic device 32 in the activated state as shown in Step J by the manual operation shown in Step I. When the seismic device 32 is reset, energization from the battery 34 shown in Step D is stopped, and the buzzer 36 is turned off as shown in Step K, and the ringing is stopped.

  Next, about the 1st solenoid valve 16 and the 2nd solenoid valve 20, after confirming the safety of the fuel tank 1 for farming, the 1st solenoid valve shown to step N and O by manual operation shown to step L and M, respectively. 16 and the second electromagnetic valve 20 are opened.

  According to the present invention, in a farming fuel tank that supplies fuel to a heating device of an agricultural facility, except for the air vent pipe and the oil feeding pipe, it is always kept in a sealed state, and when a certain level of vibration is applied, By detecting the vibration, the air vent pipe and the oil feeding pipe that are always in communication with the atmosphere are urgently shut off, and the farming fuel tank can be sealed, and the sealed state can be maintained.

  Therefore, when the farming fuel tank falls down due to an earthquake or other cause, it is possible to prevent the fuel from flowing out. Since the air vent pipe and the oil feed pipe are urgently shut off by the first solenoid valve and the second solenoid valve, the farm fuel tank can be quickly kept in a sealed state without causing a time lag. Moreover, since the first solenoid valve and the second solenoid valve are manually opened after the valve is closed, the first solenoid valve or the second solenoid valve is opened unintentionally, and fuel does not leak. .

  In addition, the fuel gauge required for checking the fuel level in the farming fuel tank has a liquid-tight structure that does not communicate with the atmosphere, so there is no risk of fuel leaking during a fall, etc. The amount can be easily confirmed.

DESCRIPTION OF SYMBOLS 1 ... Agricultural fuel tank 2 ... Bottom plate 3 ... Body part 4 ... Ceiling part 5 ... Inspection port 6 ... Cover part 7a ... Bolt 7b ... Nut 8 ... Oil supply pipe 9 ... Oil supply pipe 10 ... Drain pipe 11 ... Staircase 12 ... Air vent pipe 13, 15, 17, 19 ... nipple 14 ... elbow pipe 16 ... first solenoid valve 18, 23a, 23b ... valve 20 ... second solenoid valve 21 ... fuel gauge 22a, 22b ... socket 24 ... pressure pipe 25a, 25b ... Mounting bracket 26 ... Bracket 27 ... Stay 28 ... Protective cover 29 ... Base 30 ... Fixing tool 31 ... Control box 32 ... Seismic device 33 ... Control circuit 34 ... Battery 35 ... Inverter 36 ... Buzzer 37, 38 ... Protective cover

Claims (11)

A farming fuel tank for supplying fuel to a heating device of an agricultural facility,
A farming fuel tank, wherein when a certain level of vibration is applied to a farming fuel tank, the farming fuel tank is detected in a sealed state and kept in a sealed state.   The fuel tank for farming is always sealed except for the air vent pipe and the oil feed pipe. When vibration is detected, the air vent pipe and the oil feed pipe are automatically shut off urgently by the shut-off valve, and the shut-off state is maintained. Item 1. The fuel tank for farming according to Item 1.   When a solenoid valve is used as a shut-off valve, the first solenoid valve is attached to the air vent pipe, the second solenoid valve is attached to the oil feed pipe, and vibration is detected, the first solenoid valve and the second solenoid are detected based on the vibration detection. The fuel tank for farming according to claim 2, wherein each valve is energized and closed.   The farm fuel tank according to claim 3, wherein the first solenoid valve and the second solenoid valve are energized simultaneously.   The agricultural fuel tank according to claim 3 or 4, wherein the first solenoid valve and the second solenoid valve are manually opened after the valve is closed.   The fuel tank for farming according to claim 1, 2, 3, 4 or 5, wherein the inspection port for inspecting the inside of the farm fuel tank is normally sealed.   The fuel tank for farming according to claim 6, which is equipped with a dedicated oiling pipe that can be sealed separately from the inspection port that is normally sealed.   The fuel tank for farming according to claim 1, 2, 3, 4, 5, 6 or 7, which is equipped with a fuel gauge having a liquid-tight structure not communicating with the atmosphere.   As a fuel gauge, by fixing pressure pipes at the upper and lower ends of the farm fuel tank, and connecting the pressure fuel pipe to the farm fuel tank, the fuel in the farm fuel tank flows into the pressure pipe, The agricultural fuel tank according to claim 8, wherein the fuel level in the pressure-resistant pipe is visible.   The agricultural fuel tank according to claim 9, wherein valves are attached to both upper and lower ends of the pressure pipe.   The fuel tank for farming according to claim 8, 9 or 10, wherein the fuel gauge is covered with a protective cover.

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