JP2005290848A - Destructor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy dissipator capable of utilizing a water storage space to the maximum and improving the degree of freedom in selecting an installation place by eliminating a part exposed to the ground surface. <P>SOLUTION: This energy dissipator is used for dissipating the energy of high speed running water discharged from a sewer such as a sewer pipe 3 piped in a slope. An energy dissipating tank 11 having an inflow port 11a and an outflow port 11b, and a confluence tank 15 located downstream of the energy dissipating tank 11, are connected in communication by an outflow main 12 connected to an outflow port 11b provided with a pipe bottom part 11k in a higher position than a pipe bottom 3a of the inflow port 11a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a depressurization method used for depressurizing high-speed running water discharged from a pipe tub and used in a sewer pipe or the like piped on an inclined land.

  Conventionally, a depressurization work as shown in FIG. 5 is known (see, for example, Patent Document 1).

First, from the configuration, in this conventional depressurization work, a depressurization tank 1 having an inflow port 1a and an outflow port 1b is provided in a part of the pipe of the sewage pipe 3 piped on an inclined land. .

In the depressurization tank 1, a weir 2 is provided at a predetermined interval from the outflow port 1b.

A through hole (or slit) 2a is formed in the vicinity of the lower edge of the weir 2 and this weir 2
The upstream side and the downstream side are configured to communicate with each other.

Further, the position of the upper edge 2b of the weir 2 is a position that is higher than 1/4 of the pipe diameter of the sewage pipe 3 with respect to the pipe bottom 3a of the sewage pipe 3 on the inflow side connected to the inflow port 1a. It is set to be.

  Next, the effect | action of this conventional decelerating work is demonstrated.

In the conventional depressurization constructed as described above, the water flow such as sewage that has flowed into the depressurization tank 1 from the sewage pipe 3 on the inflow side becomes an ascending vortex by the weir 2 in the depressurization tank 1, It rises along this weir 2.

And this water flow overflows the upper end edge part 2b of the weir 2, and flows out out of the said outlet 1b via the downstream sewer pipe 3b.

As described above, when the water flow that has flowed into the depressing tank 1 is forcibly raised by the weir 2, the kinetic energy is converted into the positional energy in the height direction of the depressing tank 1 and is weakened.

Therefore, the water flow flowing down at high speed in the sewage pipe 3 piped on the slope is also reduced and flowed when passing through the depressurization tank 1.
JP 2002-201706 A (FIG. 1, paragraphs 0019 to 0039)

However, in such a conventional depressurization work, since the weir 2 is formed in the depressurization tank 1, the amount of water stored in the depressurization tank 1 is reduced by the amount of the weir 2.

For this reason, when using the inside of this energy-reduction tank 1 as a water storage space, there existed a problem that a water storage space could not be used to the maximum.

Further, if the amount of water stored in the power reducing tank 1 is set to be large, there is a possibility that the outlet 1b is blocked by overflow.

In order to prevent such blocking of the outflow port 1b, it is conceivable to provide an air vent pipe or the like for communicating the inside of the depressurization tank 1 and the outside air on the ground, but such an air vent pipe is provided on the ground surface. If exposed, the quality of the appearance is impaired, and there is a problem that the installation location of the depressurization tank 1 is limited.

Therefore, an object of the present invention is to provide a depressurizer that can make maximum use of the water storage space and can eliminate the portion exposed to the ground surface and improve the degree of freedom in selecting the installation location.

In order to achieve the above object, the invention according to claim 1 of the present invention is a pressure reducer used to reduce high-speed flowing water discharged from a pipe such as a sewage pipe piped on an inclined land. The outflow main pipe connected to the outflow port provided at a position higher than the tube bottom of the inflow port, the depressurization tank having the inflow port and the outflow port, and the merging portion located on the downstream side of the depressurization tank Featuring a depressurizer connected by.

In addition, what is described in claim 2 is characterized in that the merging section is provided with a merging tank having a capacity substantially the same as that of the dying tank in the merging portion.

Further, what is described in claim 3 is characterized in that the merging portion has a branch pipe that directly joins the outflow main pipe and is configured to have a depressurization work according to claim 1.

In addition, what is described in claim 4 is characterized in that a ventilating exhaust pipe is provided which communicates the space portion in the depressurization tank and the space portion in the merge tank. It is said.

And what was described in Claim 5 is that the outflow port to the confluence | merging part located in the said downstream is such that the said outflow port formation position does not oppose with respect to the inflow port formation position of the said depressurization tank, 5. The pressure reducing means according to claim 1, wherein the pressure reducing work is formed on a side wall portion of the pressure reducing tank at a constant angle in a plan view.

According to the first aspect of the present invention, the high-speed water flow that has flowed from the inflow port into the depressurization tank comes into contact with the inner wall portion of the depressurization tank at the periphery of the outflow port to weaken the momentum. Then, it rises and flows out into the outflow main pipe from the outlet provided at a position higher than the pipe bottom of the inlet.

For this reason, unlike the conventional case, there is no need to provide a weir in the energy reducing tank, and when the inside of the energy reducing tank is used as a water storage space, the water storage space can be utilized to the maximum extent.

Moreover, what was described in Claim 2 is in the said junction part located in the downstream of the said depressurization tank,
A merging tank having a capacity of approximately the same size as the depressurization tank is provided.

For this reason, when the space part volume in the merging tank of the merging part is also used as the water storage space, the water storage space can be further increased.

And if it forms in the substantially same shape, this depressurization tank and this merge tank can also be comprised by a common manhole etc., and the increase in manufacturing cost can be suppressed.

Further, the present invention is configured such that the merging portion has a branch pipe that directly merges with the outflow main pipe.

For this reason, even in a place where the merging tank cannot be arranged, it is possible to construct a depressurization work that can make maximum use of the water storage space.

According to a fourth aspect of the present invention, the space part in the depressurization tank and the space part in the merging tank are communicated with each other by a ventilation exhaust pipe.

For this reason, even if the outlet is blocked by a water flow, the air in the depressurization tank is allowed to escape into the merging tank without providing an air vent pipe exposed on the ground surface. Thus, it is possible to eliminate the possibility that the inflow of the flowing water is hindered by the internal pressure in the depressurization tank.

In addition, since an air vent pipe that is exposed on the ground surface is not required, the degree of freedom in selecting the installation location can be improved.

Further, according to a fifth aspect of the present invention, the outlet forming position is at a constant angle in plan view so as not to face the inlet port forming position of the depressing tank to the side wall portion of the depressing tank. It is formed with.

For this reason, it is possible to change the piping direction of the sewage pipe or the like piped to the sloping ground in the power reducing tank while exhibiting the power reducing effect by the power reducing tank.

  Therefore, a straight straight pipe can be used as the sewage pipe, and the piping is easy.

Next, based on the drawings, a destructive work of the best mode for carrying out the present invention will be described.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as the said prior art example.

  FIG. 1 to FIG. 4 show a derating process according to the preferred embodiment of the present invention.

First, a description will be given of the configuration of the depressurization work of this embodiment. In the depressurization work of this embodiment, a part of the pipe line of the sewer pipe such as the sewage pipe 3 piped on an inclined ground is 10 underground. A depressing tank 11 is provided with an inflow port 11a and an outflow port 11b. The depressing tank 11 is used to depressurize high-speed flowing water discharged from the pipe.

In the first embodiment of the present invention, the depressurizing tank 11 is mainly configured by a substantially cylindrical manhole body 11c.

The manhole body 11c has a water storage space portion 11d for storing water therein, and a manhole portion 1 provided with a lid 11f capable of opening and closing an inspection opening portion 11e on the upper portion.
1 g is formed.

Further, in the depressing tank 11 of the first embodiment, the inflow port 11a and the outflow port 11b are formed in the opposing wall surface portions 11h and 11i located on the opposite sides of the water storage space portion 11d, respectively. .

Among these, the inflow side sewage pipe 3 is connected to the inflow port 11a with a certain inclination angle.

Further, the pipe bottom portion 11j of the inflow port 11a is located at the same height as the pipe bottom 3a of the sewage pipe 3.
A pipe bottom portion 11k of the outlet 11b is provided at a higher position than the outlet 1b.
The position of the tube bottom 12a of the outflow main pipe 12 connected substantially horizontally to 1b is set to be higher than the position of the tube bottom 3a.

In the first embodiment, the pipe diameter of the outflow main pipe 12 is set to be substantially the same as the pipe diameter of the sewage pipe 3.

Further, in the first embodiment, the position of the pipe bottom 12a of the outflow main pipe 12 is set to be substantially the same as or higher than the position of the pipe upper edge 3c at the inlet connection end edge of the sewage pipe 3. Has been.

Further, a bottom raising portion 11m having a flat upper surface at a height position substantially the same as the position of the tube bottom 3a is provided on the bottom surface portion of the depressing tank 11.

Further, the opposed wall surface portion 11i is provided with a branch pipe insertion hole 11n through which the branch pipe 13 having the pipe bottom is inserted at substantially the same height as the pipe bottom 3a. The branch pipe 13 is configured to have a pipe diameter smaller than the pipe diameter of the outflow main pipe 12 and the sewer pipe 3.

Moreover, on the lower end surface in the vicinity of the bottom raised portion 11m of the opposed wall surface portion 11i of the first embodiment,
An inclined abutment surface portion 11p is formed, which is formed of an inclined surface having a certain angle with the water flow flowing into the water storage space portion 11d as an upward vortex.

And the tip edge part 13 formed diagonally of the said branch pipe 13 from this inclination contact surface part 11p.
It is comprised so that it may communicate by making a enter the said water storage space part 11d.

Further, a vent hole 11q to which the vent exhaust pipe 14 is connected is formed at an upper position spaced apart from the outflow port 11b by a certain distance in the facing wall surface portion 11i.

The ventilation exhaust pipe 14 has a diameter smaller than that of the outflow main pipe 12 and the sewage pipe 3, and has substantially the same diameter as that of the branch pipe 13.

The outflow main pipe 12, the branch pipe 13 and the vent / exhaust pipe 14 extend substantially horizontally as they are, and are positioned at a certain distance downstream of the depressurization tank 11, so that the Each is connected to a merging tank 15 as a merging portion.

The merging tank 15 mainly includes a manhole body 15c having a merging space part 15d having a capacity of substantially the same size as the water storage space part 11d of the depressurizing tank 11.

A manhole portion 15g provided with a lid 15f capable of opening and closing the inspection opening 15e is formed on the upper portion of the manhole body 15c.

Further, in the merging tank 15 of the first embodiment, an inflow port 15a, a branch pipe connection hole 15n, and a passage through which the downstream main ends of the outflow main pipe 12, the branch pipe 13 and the downstream exhaust pipe 14 are connected in communication. A pore 15q is formed in the opposing wall surface portion 15h.

And the outflow port 15b is formed by opening in the opposing wall surface part 15i located in the other side on both sides of the said confluence | merging space part 15d of this opposing wall surface part 15h.

The downstream sewage pipe 3 is connected to the outlet 15b so that the pipe bottom 3d is substantially flush with the pipe bottom 13b of the branch pipe 13 located in the branch pipe connection hole 15n.

In the first embodiment, the pipe diameter of the outflow main pipe 12 is set to be substantially the same as the pipe diameter of the sewage pipe 3 on the downstream side.

And in this Example 1, in the bottom face part of this merging tank 15, the said pipe bottom 3d and the branch pipe 13 are provided.
A bottom raised portion 15m having a flat upper surface substantially at the same height as the tube bottom 13b is provided.

  Next, the effect | action of the de-energization work of this Example 1 is demonstrated.

In the depressurization work of this Example 1, from the upstream sewage pipe 3 piped on the sloping ground, the depressurization tank 1
A high-speed water flow flows into the one water storage space portion 11d through the inflow port 11a.

This water flow is the opposite wall surface portion 11i which is the inner wall portion of the depressing tank 11 at the periphery of the outlet 11b.
The inclined contact surface portion 1 made of the inclined surface having the predetermined angle is also able to weaken the momentum.
By 1p, the water flow that flows into the water storage space portion 11d becomes an upward vortex and rises.

And this outlet 1 provided in the position higher than the pipe bottom part 11j in the said inlet 11a.
From 1b, the water flow with reduced momentum flows into the outflow main pipe 12.

Therefore, unlike the conventional one shown in FIG. 5, there is no need to provide the weir 2 in the depressurization tank 1,
When the water storage space portion 11d in the depressurization tank 11 is used as a water storage space, the water storage space can be used to the maximum.

Moreover, the flowing water once stored in the water storage space portion 11d in the power reducing tank 11 by the inflow is
It moves to the merging space 15d in the merging tank 15 via the branch pipe 13 and merges with the flowing flowing water by the outflow main pipe 12.

  And it drains to the sewer pipe 3 direction through the said outflow port 15b.

In addition, a merging tank 15 serving as the merging section located on the downstream side of the energy reducing tank 11 is provided with a merging space part 15d having a capacity substantially the same as the water storage space part 11d of the energy reducing tank 11. ing.

For this reason, when the internal volume of the confluence space portion 15d in the confluence tank 15 is also used as the water storage space, the water storage space can be further increased.

Moreover, in the first embodiment, the depressurization tank 11 and the merge tank 15 are formed in substantially the same shape. For this reason, the depressurization tank 11 and the merge tank 15 can also be comprised by a common manhole etc., and the increase in manufacturing cost can be suppressed.

Further, in the first embodiment, the water storage space portion 11 d in the depressurization tank 11 and the merging space portion 15 d in the merging tank 15 are communicated with each other through the ventilation exhaust pipe 14.

For this reason, even if the outflow port 11b is blocked by a water flow, the air in the depressurization tank 11 is not provided without an air vent pipe exposed to the ground surface.
This vent exhaust pipe 14 can escape into the merging tank 15 and eliminate the possibility that the inflow of the flowing water will be hindered by the internal pressure in the depressing tank 11.

In addition, since an air vent pipe that is exposed on the ground surface is not required, the degree of freedom in selecting the installation location can be improved.

  FIG. 2 shows the derating work of Example 2 of this embodiment.

In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as the depressurization work of the said Example 1. FIG.

First, to explain the difference in configuration, in the depressurization work of the second embodiment, air in the water storage space portion 11d of the water storage tank 11 is allowed to escape instead of the ventilation exhaust pipe 14 of the first embodiment. An air vent pipe 24 that is erected on the ground surface 9 and communicates with the inside of the water storage space 11d is provided connected to one opposing wall surface 21h.

  Next, the operation of the de-energizing work of Example 2 will be described.

In the energy reducing work of the second embodiment configured as described above, in addition to the effect of the power reducing work of the first embodiment, even in the case where the outlet 21b is blocked by a water flow, by any chance. The air in the depressurization tank 21 is released to the atmosphere through the air vent pipe portion 24 exposed to the ground surface.

For this reason, it is possible to eliminate the possibility that the inflow of the flowing water is hindered by the internal pressure in the depressurization tank 21.

Moreover, since the said air vent pipe part 24 can be installed in low cost, the raise of manufacturing cost can be suppressed.

Other configurations and operational effects are substantially the same as those of the first embodiment, and thus the description thereof is omitted.

  FIG. 3 shows the depressurization work of Example 3 of this embodiment.

In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as the depressurization work of the said Examples 1,2.

First, in terms of the configuration, in the de-energization work of the third embodiment, the merging portion 30 mainly includes the branch pipe 13 that merges directly with the outflow main pipe 22 connected to the derating tank 21. Has been.

In the merging portion 30 of the third embodiment, an insertion hole 22d through which the branch pipe 13 is inserted is formed in the lower outer surface portion 22c of the outflow main pipe 22, and the branch pipe 13 is inserted into the insertion hole 22d. By being inserted and connected, it is configured to be joined directly.

  Next, the operation of the de-energizing work of the third embodiment will be described.

In the de-energizing work of Example 3 configured as described above, the merging portion 30 includes the branch pipe 13 that directly merges with the outflow main pipe 22.

For this reason, from the upstream sewage pipe 3 piped to the slope, the water storage space 2 of the depressurization tank 21 is provided.
When a high-speed water flow flows into 1d, it is brought into contact with the opposing wall surface portion 21i on the periphery of the outlet 21b, and the momentum is weakened, and the water storage space is formed by the inclined contact surface portion 21p formed of the inclined surface of the constant angle. The water flow that has flowed into the portion 21d rises as a rising vortex.

And this outflow port 2 provided at a position higher than the tube bottom 21j in the inflow port 21a.
From the pipe bottom 21k of 1b, the water flow with reduced momentum flows out into the outflow main pipe 22.

Therefore, unlike the conventional one shown in FIG. 5, there is no need to provide the weir 2 in the depressurization tank 1,
In the case where the water storage space portion 21d in the energy reducing tank 21 is used as a water storage space, the water storage space can be used to the maximum.

Also, the flowing water once stored in the water storage space portion 21d in the power reducing tank 21 by the inflow is
The merging portion 30 joins the outflow main pipe 22 through the branch pipe 13.

  And it drains in the direction of the sewage pipe 3 downstream from the junction 30 of the outflow main pipe 22.

Therefore, even in a place where the merging tank 15 described in the first embodiment cannot be arranged, it is possible to make maximum use of the water storage space amount by using the volume in the water storage space part 21d of the power reducing tank 21. We can construct a de-energizing work.

Other configurations and operational effects are substantially the same as those of the first and second embodiments, and thus the description thereof is omitted.

  FIG. 4 shows the depressurization work of Example 4 of this embodiment.

In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as the depressurization work of the said Examples 1-2.

First, from the configuration, in the de-energizing work of the fourth embodiment, as shown in FIG. 4, the outlet 11 b to the merging tank 15 located on the downstream side is formed as the inlet 11 a of the de-energizing tank 11. The position where the outlet 11b is formed with respect to the position is formed on the side wall portion 11r of the depressing tank 11 at a constant angle in plan view so as not to face the front.

For this reason, the pipe axis direction S12 of the outflow main pipe 12 with respect to the pipe axis direction S3 of the sewage pipe 3 is
A fixed angle α (α = about −90 to +90 degrees, in this embodiment 4, α = about 45 degrees) is formed, and each is connected to the depressing tank 11.

Furthermore, in the fourth embodiment, the outflow main pipe 12, the branch pipe 13, and the ventilation exhaust pipe 14 are spaced apart at a constant interval in the height direction, and as shown in FIG. It is overlapped and extended.

  Next, the operation of the de-energizing work of Example 4 will be described.

In the depressurization work of the fourth embodiment configured as described above, in addition to the effect of the depressurization work of the first embodiment, the formation position of the outflow port 11b is further changed to the side wall portion 11r of the depressurization tank 11. In addition, a fixed angle α in a plan view so as not to face the inlet 11a formation position of the depressurization tank 11 in front.
Is formed.

For this reason, in the depressurization tank 11, the water flow is brought into contact with the opposing wall surface portion 11i of the water storage space portion 11d to exhibit the depressurization effect, and to the outflow main pipe 12 connected to the outflow port 11b. It is possible to make the water flow weakened.

And in this depressurization tank 11, the piping direction of the sewage pipes 3 and 3 piped to the said sloping ground can be changed.

Further, the sewage pipes 3 and 3, the outflow main pipe 12, the branch pipe 13 and the ventilation exhaust pipe 14 can use straight straight pipes, and can further suppress an increase in manufacturing cost.

Furthermore, in the fourth embodiment, the outflow main pipe 12, the branch pipe 13, and the ventilation exhaust pipe 14 are spaced apart at a constant interval in the height direction, and as shown in FIG. It is overlapped and extended.

For this reason, when excavating a vertical groove for piping between the depressurization tank 11 and the merging tank 15, if the vertical groove with the width of the outflow main pipe 12 having the largest pipe diameter is dug down, The outflow main pipe 12, the branch pipe 13, and the ventilation exhaust pipe 14 can be easily embedded.

  Therefore, it is possible to facilitate the piping construction and further suppress an increase in manufacturing cost.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to this embodiment. Included in the invention.

That is, in the first embodiment, the bottom surface portion of the depressurization tank 11 is provided with a bottom raising portion 15m having a flat upper surface at substantially the same height as the tube bottom 3d and the tube bottom 13b position of the branch tube 13. In addition, the inclined contact surface portion 11p made of an inclined surface having a certain angle is formed, but not limited to this, for example, either one is provided or both are not provided Good.

Further, in the first and second embodiments, the ventilation exhaust pipe 14 and the air vent pipe portion 24 are used.
However, the present invention is not limited to this, and any of the ventilation exhaust pipe 14 and the air vent pipe portion 24 may be provided. It is natural to be good.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an underground vertical cross-sectional view illustrating the overall configuration of a de-energizing work of Example 1 of an embodiment of the present invention. FIG. 5 is an underground vertical cross-sectional view for explaining the overall configuration in the de-energizing work of Example 2 of the embodiment of the present invention. It is a underground longitudinal cross-sectional view explaining the whole structure by the depressurization work of Example 3 of the embodiment of the present invention. It is a typical top view explaining a structure by the depressurization work of Example 4 of an embodiment. It is the underground longitudinal cross-sectional view explaining the whole structure by the de-energization work of a prior art example.

Explanation of symbols

3 Sewage pipe 3a Pipe bottom 11, 21 Depressurization tank 11a, 21a Inlet 11b, 21b Outlet 11d, 21d Water storage space part 11i, 21i Opposite wall surface part 11j, 21j Pipe bottom part (on inlet side)
11k, 21k Tube bottom (outlet side)
11r side wall part 12,22 outflow main pipe 12a, 22a pipe bottom part 13 branch pipe 30 merge part

Claims (5)

A de-energizing work used to de-energize high-speed running water discharged from pipes such as sewage pipes piped on slopes,
An outflow main pipe connected to an outflow port provided at a position higher than the tube bottom of the inflow port, a depressurization tank having an inflow port and an outflow port, and a joining portion located downstream of the depressurization tank. Reducer characterized by connecting. 2. The de-energizing work according to claim 1, wherein the merging section is provided with a merging tank having a capacity substantially the same as that of the derating tank. 2. The de-energizing work according to claim 1, wherein the confluence portion includes a branch pipe that directly merges with the outflow main pipe. The ventilating / exhausting pipe according to claim 2, further comprising a ventilation exhaust pipe that communicates the space part in the derating tank and the space part in the merging tank. A side wall of the pressure reducing tank at a constant angle in plan view so that the outlet to the junction located on the downstream side does not face the inlet forming position of the power reducing tank. The depressurizer according to claim 1, wherein the depressurizer is formed in a portion.

Images