JP2009102926A - Underground embedding structure of power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively prevent a power generator in a hand-hole from intrusion of water, in an underground embedding structure of the power generator by using the hand-hole. <P>SOLUTION: The underground burying structure of the power generator includes the stand 4 set in the hand-hole B<SB>1</SB>, the power generator A set on the stand 4, a water gauge L<SB>1</SB>for detecting that the water level H by the water intrusion W in the hand-hole B<SB>1</SB>reaches the limit water level just before the power generator A is intruded with water, a pump P for discharging the water W intruded into the hand-hole B<SB>1</SB>, an air intake pipe 9 for taking in outside air into the hand-hole B<SB>1</SB>, and a discharge pipe 11 for discharging the inside air heated up in temperature caused by the operation of the power generator A and the pump P. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power generation device of a type in which a power generation device for supplying power to a road facility such as a road display device and a surveillance camera in a power failure caused by an emergency such as an earthquake or storm and flood damage is housed in a hand hole buried underground. It relates to the buried structure.

  Conventional power generators that supply power to road indicators in the event of a power failure due to an emergency such as an earthquake or storm and flood damage were installed on the roadside (shoulder), so their presence would harm the landscape and passers-by It was an obstacle and dangerous, and the exposed exhaust pipe of the engine became hot, and it was necessary to take measures against heat to avoid burns caused by the contact of passers-by. In addition, it was difficult to secure a place for installing the power generation device. Therefore, when the power generation device is buried in the ground near the road using the handhole, there is a problem that rainwater enters the handhole, causing the power generation device to be submerged and disabled. That is, it does not have means for detecting a large amount of water, and is not structured to cope with flooding. In general, handholes used outdoors are often submerged due to poor drainage even during normal times, and are often gradually submerged as the underground water level increases.

On the other hand, Patent Document 1 discloses a structure in which power generation facilities for emergency power are installed in a power supply room in the basement of a building. This structure has almost no fear of inundation because power generation facilities are embedded in the basement of the building designed as a structure, but it requires installation space and is expensive, so it is suitable for the road indicator. Not. Patent Document 2 proposes a structure for housing electrical equipment in a hand hole, but the power generator needs to be supplied and exhausted with combustion air. Therefore, the structure for housing the power generator is applied as it is. Can not.
Japanese Utility Model Publication No. 63-26763 JP 2000-27283 A

  An object of the present invention is to effectively prevent the power generation device in the handhole from being submerged in a structure in which the power generation device is buried in the ground using a handhole.

  The invention of claim 1 for solving the above-mentioned problem is an underground embedment structure of a power generator of a type in which a power generator for supplying power to a road facility in the event of a power failure is housed in a hand hole buried underground. , A pedestal installed in the hand hole, a power generation device installed on the pedestal, and a detection method for detecting that the water level in the hand hole has reached a limit water level immediately before the power generation device is submerged. A water level meter, a pump for draining water entering the hand hole, an intake pipe for taking outside air into the hand hole, and an exhaust pipe for discharging internal air, When the water level of the submerged water reaches the limit water level, the generator of the power generation device is operated by a limit water level signal generated from the water level gauge, and the pump is operated by the power supply from the generator. With draining water entering within, and outside air is taken in from the intake pipe, and wherein the inner air is configured to be discharged to the outside from the exhaust pipe.

  According to the invention of claim 1, in the event of a power failure due to an emergency such as an earthquake, storm or flood, the generator is activated by a signal generated by the power failure, and power is supplied from the generator to a road indicator lamp or the like instead of the commercial power source. Thus, road facilities such as road indicators can be operated without hindrance. During the operation of the generator, the temperature of the air in the sealed hand hole increases, so outside air is taken into the hand hole through the intake pipe, and the air whose temperature in the hand hole has increased is exhausted. It is exhausted to the outside through. Thus, even if the generator is operated in the hand hole which is a sealed space, the temperature of the air in the hand hole does not continue to rise and is kept below a certain temperature, so that the generator can be operated.

  On the other hand, ground water enters the inside of the hand hole through the gap of the lid part, and the water of the ground enters the inside through the gap with the through hole formed in the side wall part. The water to be drained is naturally drained from drain holes formed in the bottom wall of the hand hole. However, when the drain hole is clogged or the surroundings of the hand hole are in a wet state, the water is not drained and the water in the hand hole increases. In addition, when the amount of precipitation per unit time increases, such as during heavy rains, the natural drainage cannot handle it, and the level of water inundation in the handhole increases, but the power generator is installed on a stand. As a result, the power generator is not submerged until the water reaches the part of the base plate. In addition, since a water level meter is installed in the hand hole to detect that the water level has reached the vicinity of the gantry plate, the water level in the hand hole increases, and the power generator on the gantry When the limit water level immediately before the water is submerged is reached, the limit water level is detected by the water level gauge, and the generator is activated by the limit water level signal. The infiltrated water is drained to the outside. When the water level reaches the level at which drainage is complete, the pump stops and prevents idling. As a result, since the power generation device is installed in the hand hole buried in the ground and is not exposed to the ground, the roadside landscape can be maintained and it is not an obstacle to passers-by.

  In addition, during maintenance / inspection of the power generation equipment, the lid of the handhole is removed and the operator enters the inside of the handhole from the outside of the handhole so that maintenance / inspection of the power generation equipment buried in the ground can be performed. Easy to do.

  According to a second aspect of the present invention, in the first aspect of the invention, lower ends of the intake pipe and the exhaust pipe are connected to a through hole formed in a side wall portion of the handhole, and the intake pipe and the exhaust pipe are connected to each other. Most are characterized by being buried underground.

  According to the invention of claim 2, not only the power generation device but also both the intake pipe and the exhaust pipe for ventilating to prevent the air temperature in the handhole from increasing are buried underground, The exposed part is reduced, and the heat insulation structure of the exhaust pipe that becomes high temperature is simplified, and there is no risk that a passerby touches the high temperature part of the exhaust pipe, and the scenery on the road can be more reliably maintained.

  In the present invention, a pedestal is installed in a hand hole buried in the ground, and a power generation device is installed on the pedestal. When the limit water amount to submerge the water is reached, the water level gauge provided in the hand hole detects the limit water amount, the generator is activated by this detection signal, the pump is activated by the power supply from the generator, and the hand hole The water that has entered inside is drained to the outside. On the other hand, at the time of a power failure, only the generator operates, power is supplied to the road facility, and the air in the handhole whose temperature is increased by the operation of the generator passes through the exhaust pipe by the external air being taken in by the intake pipe. Since it is discharged outside, the inside of the handhole is always kept at a predetermined temperature or lower, and the power generator can be operated continuously.

  Hereinafter, the present invention will be described in more detail with reference to a plurality of embodiments.

1 is a cross-sectional view of an embedded structure of a power generator A according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line XX of FIG. 1 and 2, in the present invention, the power generation apparatus A is housed in a hand hole embedded in the ground on the road (shoulder) of the portion where the road indicator is installed. The power generator A includes a generator G, a controller (not shown) that controls the generator G, an engine E that drives the generator G, a fuel tank 5 that supplies fuel to the engine E, and the like. In this embodiment, the generator G, the engine E, and the controller are integrated into a generator unit U. The hand hole B ₁ of the embodiment is made of concrete and has a structure in which the upper surface opening 2 of the hand hole main body 1 is closed with a lid 3. A gantry 4 is installed in the handhole body 1, and the generator unit U and the fuel tank 5 are installed on a gantry plate 4 a of the gantry 4.

In addition, ground water enters the hand hole B _{1 from} the gap between the hand hole main body 1 and the lid 3, the gap between the intake and exhaust pipes, the gap between the conduit pipes, and the like, and the side wall portion 6 a of the hand hole main body 1. Water in the ground is discharged from the gaps between the through holes 7a, 7b, 8 formed in 6b and the pipes (intake pipe 9, exhaust pipe 11, drain pipe 12) inserted into the through holes 7a, 7b, 8. Infiltrate. For this reason, the base plate 4a is provided with a pump P for draining the water W that has entered the handhole body 1. The water supply pipe 13 of the pump P hangs down to reach the vicinity of the bottom wall portion 14 of the handhole main body 1, and the forced drain pipe 15 of the pump P is connected to the through hole 8 of the side wall portion 6 a of the handhole main body 1. It is connected to another drain pipe 12 inserted into the hand hole main body 1 through a connector 16. Further, the mount plate 4a, first to detect the limit depth of flooding W is a quantity of water immediately before the amount of water W having entered hand hole B ₁ is submerged to the generator unit U and the pump P A water level gauge L ₁ and a stand 2 water level gauge L ₂ that outputs a signal indicating completion of drainage by the pump P are suspended.

  The through hole 17 formed in the central recess 14a of the bottom wall portion 14 of the handhole body 1 has an end portion of a natural drain pipe 18 for naturally draining the water W that has entered the handhole body 1. Plugged in. For this reason, the water W that naturally enters the handhole main body 1 little by little is drained naturally from the natural drain pipe 18 and the water W is stored in the handhole main body 1 until the power generator A is submerged. There are few things. The forced drain pipe 15 is connected to a culvert (not shown). The through hole 17 is provided with a check valve 19 to prevent the drainage of the pump from flowing backward.

In addition, a bent end portion of an intake pipe 9 for taking outside air into the hand hole B ₁ is inserted into the through hole 7 a opened in one side wall portion 6 a of the hand hole body 1. the through-hole 7b bored on the other opposite side wall portions 6b, bent by end of the exhaust pipe 11 for exhausting the air hand hole B ₁ to the outside is inserted. Further, in the hand hole B ₁ , a suction fan 21 a is attached to an end portion of the intake pipe 9 on the hand hole B ₁ side, and external air is passed through the intake pipe 9 by the suction force of the suction fan 21 a. with incorporated into the B _1, the end of the hand hole B ₁ side of the exhaust pipe 11, the suction fan 21b is attached, hand hole B ₁ by external air is taken into the hand hole B ₁ When the pressure increases, the air in the hand hole B ₁ is discharged to the outside through the exhaust pipe 11 by the blowing force of the suction fan 21b. Even if the temperature of the internal air is increased by operating the generator G in the sealed hand hole B ₁ by the action of taking in the external air and the action of exhausting the internal air, the temperature of the internal air remains below a certain temperature. Therefore, the generator G can be continuously operated. 1 and 2, S indicates the ground surface, 22 indicates a fuel pipe that connects the engine E and the fuel tank 5, and 23 indicates the ground surface at the upper ends of the intake pipe 9 and the exhaust pipe 11. The cover which covers the opening located slightly upward is shown.

For this reason, in the event of a power failure due to an emergency such as an earthquake or storm and flood damage, the power generator unit U is activated by this power failure signal, and power is supplied from the power generator G to the road display device. Etc. operate normally. Wherein the suction fan 21a by power supply from the generator G, 21b is operated, the external air from the intake pipe 9 is taken into the hand hole B _1, air temperature is increased in hand hole B ₁ exhaust It is exhausted to the outside through the pipe 11. Therefore, the air temperature in the hand hole B ₁ is suppressed to a certain temperature or less, and the generator G installed in the hand hole B ₁ that is a sealed space that is shut off from the outside can be operated continuously.

In particular, when a power failure occurs due to the occurrence of an emergency related to flooding, if a large amount of water enters the handhole B ₁ in a short time, the bottom wall portion 14 of the handhole body 1 by the natural drain pipe 18 is used. Therefore, the water level H of the water W in the handhole body 1 rises and the generator G and the pump P may be submerged. However, in the present invention, the water level H of the inundation W is detected by the first and second water level gauges L ₁ and L ₂ suspended from the gantry plate 4a, and the inundation W infiltrates the generator G and the pump P. When the immediately preceding limit water level is reached, a limit water level signal (drainage start signal) is issued from the first water level gauge L _1, and the pump P is operated by power supply from the operating generator G. The operation of the pump P, flooding W of hand hole B ₁ is lowered water level H flooded W is discharged to the outside through the forced water discharge pipe 15, from the generator G and a pump P is flooded It can be surely prevented. Further, when the water level in the handhole B ₁ is lowered to the safe water level due to the operation of the pump P, a drainage completion signal is issued from the second water level gauge L ₂ , the operation of the pump P is stopped, and the first water level When the next limit water level signal is generated by the meter L _1, the pump P is operated again, this condition is repeated. Therefore, even when a large amount of water to hand hole B ₁ intrudes within a short period of time during operation of the generator unit U by a power failure, the generator G is then continuously operated without being flooded. Examples of the water level meter include one using an electrode or a bare conductor, a frict switch, and the like. In addition, the above embodiment is an example of starting and stopping the pump operation by detecting the water level of the water that has entered the hand hole with two types of water level gauges. Since both are known, it is possible to take out only the start of operation of the pump from the water level gauge and stop the pump with a timer.

In this way, the power generation device A for supplying power to the road indicator or the like in the event of an emergency power outage is installed in the hand hole B ₁ buried in the ground on the road, and the inside of the hand hole B ₁ Since both the intake pipe 9 and the exhaust pipe 11 that perform intake and exhaust are buried in the ground and there is no portion protruding from the ground surface, the roadside scenery can be maintained, and a road passer It is not an obstacle to burns.

  Moreover, although the said Example is an example which mounted the pump on the mount installed in the hand hole, it is also possible to use the submersible pump installed in the bottom part of the hand hole.

Next, Embodiment 2 of the present invention will be described with reference to FIGS. FIG. 3 is a perspective view of a state in which the power generation apparatus A is installed inside an existing hand hole B ₂ partially having a ground exposed portion, and FIG. 4 is also a longitudinal sectional view. In the hand hole B ₂ , an exposed cylinder part 30 is formed integrally with an end part of one side of the hand hole main body 31 over the entire length (full width) of another piece, and an intake pipe 32 is formed on the exposed cylinder part 30. Further, the exhaust pipe 33 is arranged vertically, and the lower ends of the pipes 32 and 33 are inserted into the upper wall part 34 of the handhole body 31 to maintain the standing posture. A cover 35 that covers the openings of the intake pipe 32 and the exhaust pipe 33 is horizontally attached to the upper end of the exposed cylinder portion 30. The configuration in which the power generator A is installed inside the handhole body 31 is the same as that in the first embodiment. 3 and 4, reference numeral 36 denotes an intake fan that is connected to the lower end opening of the intake pipe 32 inside the handhole body 31, and 37 closes the opening 38 of the handhole body 31. The lid is shown.

In the second embodiment, since the existing hand hole B ₂ having the exposed cylinder part 30 exposed to the ground in part is used and the intake pipe 32 and the exhaust pipe 33 can be installed in the exposed cylinder part 30, The work of burying the intake pipe 32 and the exhaust pipe 33 becomes unnecessary, and the construction is facilitated.

It is sectional drawing of the embedding structure of the electric power generating apparatus A of Example 1 of this invention. It is the XX sectional view taken on the line of FIG. Part is a perspective view of a state in which the installed power generation apparatus A inside the hand hole B ₂ of the existing with ground exposed portion. It is a longitudinal cross-sectional view similarly.

Explanation of symbols

A: Power generator
B ₁ and B ₂ : Hand hole
E: Engine
G: Generator
H: Inundation level
L ₁ and L ₂ : Water level gauge
P: Pump
U: Generator unit
W: Flooded
1,31: Handhole body
4: Mount
9, 32: Intake pipe
11, 33: exhaust pipe

Claims (2)

A power generation device for supplying power to a road facility at the time of a power failure is a underground structure of a power generation device of a type that is housed in a hand hole buried underground,
A pedestal installed in the handhole, a power generation device installed on the pedestal, and a water level for detecting that the water level in the handhole has reached the limit water level just before the power generation device is submerged. A meter, a pump for draining water entering the hand hole, an intake pipe for taking outside air into the hand hole, and an exhaust pipe for discharging the internal air,
When the water level in the hand hole reaches the limit water level, the generator of the power generation device is operated by a limit water level signal emitted from the water level gauge, and the pump is operated by the power supply from the generator to cause the hand hole. An underground structure for a power generation apparatus, characterized in that water that has entered inside is drained, outside air is taken in from the intake pipe, and internal air is discharged to the outside through an exhaust pipe.   The lower ends of the intake pipe and the exhaust pipe are connected to through holes formed in a side wall portion of a hand hole, and most of the intake pipe and the exhaust pipe are buried in the ground. The underground structure of the power generator according to 1.

Images