JP2015166526A - inspection method of siphon drainage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an efficient inspection method of a drain pipe of a siphon drainage system after construction.SOLUTION: An inspection method of a siphon drainage system comprising a horizontal pipe 30C for discharging drain water from a water section implement 12C, and a vertical pipe 32C which is connected to a downstream-side end part of the horizontal pipe 30C, and arranged at a lower part in a vertical direction comprises: a first process for connecting a downstream-side end part of another piping (siphon drain pipe 16D) whose upstream-side end part is opened to air and a downstream-side end part of the vertical pipe 32C; a second process for making an inspection fluid flow from an upstream-side end part of the horizontal pipe 30C therein; and a third process for inspecting whether or not there exists fluid leakage at the horizontal pipe 30C, the vertical pipe 32C and the other piping 16D after the inspection fluid reaches an upstream-side end part of the other piping 16D.

Description

  The present invention relates to an inspection method for a siphon drainage system.

  In recent years, siphon drainage systems have been proposed. The siphon drainage system includes a watering device and a siphon drainage pipe. The siphon drainage pipe has a horizontal pulling pipe disposed without a gradient along the floor slab, and a vertical pipe disposed continuously in the vertical direction to the horizontal pulling pipe. By using the siphon force generated in this soot pipe, drainage efficiency is improved from the watering device (see Patent Document 1).

  By the way, after such a siphon drainage system is constructed, it is necessary to inspect the drain pipe for leaks. If it is not a siphon drainage system, for example, after plugging one side of the drainage pipe, water is poured from one side to the other to fill the water, so that the leak point can be confirmed visually.

JP 2011-256557 A

  In the siphon drainage system, individual siphon drainage pipes are arranged corresponding to each watering device. Therefore, it is necessary to perform the above inspection for each individual siphon drain pipe, and there is a disadvantage that the inspection becomes complicated.

  In addition, since the siphon drainage pipe has a small diameter in the siphon drainage system, even if one end is closed and water is injected from the other end, the air inside the siphon drainage pipe does not escape well, There is an inconvenience that it is difficult to inject.

  In addition, it is conceivable that the siphon drain pipe is plugged after the siphon drain pipe is completely filled with water without plugging both ends of the siphon drain pipe. However, when water is injected from the side pipe of the siphon drainage pipe, the water falls in the vertical pipe and the flow velocity increases, so it cannot be plugged in accordance with the timing of full water, and the slab etc. is submerged. There is an inconvenience.

  Furthermore, it is conceivable that water is injected from the lower end of the soot pipe by a pump or the like, but in this case, a pump is usually required for each of a plurality of siphon drain pipes, which is inferior in work efficiency.

  That is, an efficient and reliable sealing test method has not been established for the siphon drainage system.

  In view of the above facts, an object of the present invention is to provide an efficient method for inspecting the drainage pipe of a siphon drainage system after construction.

  An inspection method for a siphon drainage system according to claim 1 of the present invention is connected to a horizontal pulling pipe for discharging drainage from a watering device in a substantially horizontal direction, and to a downstream end of each horizontal pulling pipe. An inspection method for a siphon drainage system, comprising: a downstream pipe end connected to a downstream end of another pipe whose upstream end is open to the atmosphere, and a downstream end of the vertical pipe A first step, a second step in which a test fluid is allowed to flow in from an upstream end of a horizontal pipe or other pipe connected to the connected pipe, and the test fluid is the other pipe or the horizontal pipe. A third step of inspecting whether or not there is a fluid leak in the horizontal pulling pipe, the soot pipe, and the other pipe after reaching the upstream end portion.

  In this siphon drainage system inspection method, first, the downstream end of the soot pipe and the downstream end of another pipe are connected. Therefore, when the inspection fluid is injected from the upstream end (opening end) of the horizontal pipe connected to the connected vertical pipe, the gas existing in the vertical pipe connected to the horizontal pipe is transferred to the vertical pipe. It discharges | emits from the upstream edge part (opening part) of the other connected piping. That is, it is possible to fill not only the siphon drain pipe but also other connected pipes with the fluid only by confirming that the inspection fluid flows out from the other pipes. That is, it is possible to inspect the sealing performance of a plurality of pipes at once by connecting the vertical pipe and the downstream end of another pipe.

  Here, the horizontal pipe is “substantially horizontal”, not only when the horizontal pipe is non-gradient, but also when there is a downward slope, and in order to avoid other piping, etc. Including the case where there is an upward slope.

  Further, the “gas” includes a case where air mixed with smoke or the like is used in addition to a normal gas.

  The siphon drainage system inspection method according to claim 2 of the present invention is the siphon drainage system inspection method according to claim 1, wherein the fluid is a liquid.

  When the inspection fluid is a liquid, the inner diameter of the siphon drain pipe (horizontal drawing pipe and dredging pipe) is small and it is difficult to inject the liquid into the inside. In particular, even if it is attempted to inject water by plugging the downstream end of the soot tube, the air inside is difficult to escape. However, in this inspection method of the siphon drainage system, since the end of the other pipe and the downstream end of the soot pipe are connected, the air inside the siphon drain pipe is discharged to the outside from the upstream end of the other pipe. The liquid can be smoothly injected into the drain pipe.

  This “liquid” is intended to include cases where colored water or the like is used in addition to normal water.

  The inspection method of the siphon drainage system according to claim 3 of the present invention is the inspection method of the siphon drainage system according to any one of claims 1 and 2, wherein the other pipes are plural and downstream of the dredger pipe Side ends and downstream ends of the plurality of pipes are connected by connecting pipes.

  In the inspection method of the siphon drainage system according to claim 3 of the present invention, there are a plurality of the other pipes, and the downstream ends of the dredger pipes and the downstream ends of the plurality of discharge pipes are connected.

  In this siphon drainage system inspection method, the downstream end of a plurality of other pipes is connected to the downstream end of one soot pipe so that the inspection fluid can be drawn from the horizontal pipe continuous to the soot pipe. It is possible to inject the inspection fluid into other pipes simply by injecting.

  The inspection method of the siphon drainage system according to claim 4 of the present invention is the inspection method of the siphon drainage system according to any one of claims 1 to 3, wherein in the first step, the downstream end of the soot pipe The other pipes connected to are other soot pipes.

  In this siphon drainage system inspection method, the downstream ends of the plurality of siphon drainage pipes are connected to each other. Therefore, it is possible to smoothly inject the inspection fluid into the siphon drainage in which it is difficult to inject the inspection fluid, particularly the liquid, and it is possible to inspect two or more siphon drainage pipes at a time.

  The inspection method of the siphon drainage system according to claim 5 of the present invention is the inspection method of the siphon drainage system according to any one of claims 1 to 4, wherein the horizontal pulling pipe once drains water from a watering device. It is connected to a storage tank for storage.

  Since the siphon drain pipe communicates with the storage tank, when the test liquid is injected into the siphon drain pipe, the test liquid may be injected into the storage tank.

  The inspection method of the siphon drainage system according to claim 6 of the present invention is the siphon drainage system inspection method according to any one of claims 1 to 5, wherein in the third step, the inspection fluid is the soot pipe, The horizontal pulling pipe and the other pipe are filled with a test fluid, the upstream end of the other pipe is closed, and the pressure fluctuation of the test fluid is measured.

  In this siphon drainage system inspection method, after filling the horizontal draw pipe, soot pipe and other pipes with the test fluid, the upstream end of the other pipe is closed to change the pressure at the upstream end of the horizontal draw pipe. It is possible to confirm the presence or absence of leaks in the horizontal pulling pipe, soot pipe, and other pipes simply by measuring.

  The inspection method of the siphon drainage system according to claim 7 of the present invention is connected to a horizontal draw pipe for discharging the drainage from the watering device in a substantially horizontal direction, and a downstream end of each horizontal draw pipe, An inspection method for a siphon drainage system, comprising: a downstream pipe end connected to a downstream end of another pipe whose upstream end is open to the atmosphere, and a downstream end of the vertical pipe From the first step, the second step of closing one of the upstream end portions of the horizontal pulling tube or other piping that is continuous with the vertical tube, and the other of the upstream end portions of the horizontal pulling tube or the other piping Whether or not there is a fluid leak in the horizontal pipe, the horizontal pipe and the other pipe by pressurizing the gas inside the vertical pipe, the horizontal pipe and the other pipe and measuring the pressure fluctuation And a third step of inspecting.

  In this siphon drainage system inspection method, first, the downstream end of the soot pipe and the downstream end of another pipe are connected. Next, one upstream end (opening end) of the horizontal pulling pipe or the other piping continuous to the connected soot pipe is closed. Subsequently, whether there is a leak in the horizontal draw pipe, soot pipe and other pipes by pressurizing the gas in the horizontal draw pipe, soot pipe and other pipes from the other upstream end and measuring the pressure fluctuations. You can check whether or not. That is, it is possible to inspect the sealing performance of a plurality of pipes at once by connecting the vertical pipe and the downstream end of another pipe.

  ADVANTAGE OF THE INVENTION According to this invention, the efficient test | inspection of a leak can be performed with respect to the drain pipe and piping of the siphon drainage system after construction.

It is sectional drawing which shows schematic structure of the siphon drainage system which concerns on 1st Embodiment of this invention. It is a perspective view which shows the principal part of the siphon drainage system which concerns on 1st Embodiment of this invention. It is sectional drawing explaining the connection state of a siphon drain pipe. It is a perspective view which shows the connection state of a siphon drain pipe. It is a perspective view which shows the injection | pouring state of the water with respect to a siphon drain pipe. It is a perspective view which shows the injection | pouring state of the water with respect to a siphon drain pipe. It is sectional drawing which shows the injection | pouring state of the water with respect to a siphon drain pipe. It is sectional drawing which shows schematic structure of the siphon drainage system which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows schematic structure of the siphon drainage system which concerns on the other example of 2nd Embodiment of this invention. It is sectional drawing which shows schematic structure of the siphon drainage system which concerns on 3rd Embodiment of this invention. It is sectional drawing which shows schematic structure of the siphon drainage system which concerns on 4th Embodiment of this invention. It is sectional drawing which shows schematic structure of the siphon drainage system which concerns on 5th Embodiment of this invention.

[First Embodiment]

  An inspection method for a siphon drainage system according to a first embodiment of the present invention will be described with reference to FIGS.

  First, the siphon drainage system 10 to which this test method is applied will be described. In this embodiment, an example applied to an apartment house composed of a plurality of floors will be described. The siphon drainage system is preferably used for an apartment house, but can also be applied to a detached house, a general house, a factory, or the like.

  As shown in FIG. 1, the siphon drainage system 10 includes a storage tank 14 for temporarily storing drainage discharged from the plurality of water-circulating devices 12A to 12C provided in each house of the apartment house, and siphon force for draining the storage tank 14. The siphon drain pipes 16A to 16C are allowed to flow through, and the standing pipe 18 that allows the water flushed through the siphon drain pipes 16A to 16C to flow downward is provided.

  The storage tank 14 temporarily stores the waste water from the watering devices 12A to 12C. As shown in FIG. 2, the storage tank 14 has a rectangular box shape, and a storage space 20 is formed therein. In addition, the storage space 20 is formed in the three storage portions 20 </ b> A to 20 </ b> C by the partition member 22.

  In addition, these three storage parts 20A-20C are connected by flowing over the partition member 22, and it is the structure into which waste_water | drain flows in via the drainage introduction pipe | tubes 24A-24C from the water-surrounding devices 12A-12C. .

  Moreover, as shown in FIG. 2, siphon drain pipes 16A to 16C are connected to the downstream sides of the three reservoirs 20A to 20C, respectively.

  As shown in FIG. 1, the siphon drain pipe 16 </ b> A includes a horizontal pulling pipe 30 </ b> A disposed along the slab 28, and a dredging pipe 32 </ b> A continuous with the downstream end of the horizontal pulling pipe 30 </ b> A. The horizontal pulling pipe 30A is connected to the storage tank 14, and is disposed on the slab 28 with no gradient in the horizontal direction. The dredging pipe 32A continuing to the horizontal pulling pipe 30A is disposed downward (vertically downward) along a drainage stack (not shown).

  In the present embodiment, the horizontal pipes 30A to 30C have no gradient, but may have a downward gradient, or may partially include an upward gradient in order to avoid other piping. Including such things, the horizontal pulling tubes 30A to 30C are said to be substantially horizontal.

  Further, the downstream end (lower end) of the soot pipe 32 </ b> A is connected to the standing pipe 18 via a junction joint 34.

  The horizontal pulling pipe 30A and the soot pipe 32A continuously form a siphon drain pipe 16A, and the inner diameter of the pipe is set so that drainage is performed in a state where the interior is filled with drainage. Further, the siphon force (negative pressure) is acted on by the energy of the siphon head Hs to drain the water.

  At the time of inspection described later, the water-circulating devices 12A to 12C and the drainage introduction pipes 24A to 24C are not connected to the storage tank 14, and the drainage introduction pipes 24A to 24C of the storage tank 14 are closed by a closing means (not shown). Yes.

  Further, the downstream side end portions of the pipes 32 </ b> A to 32 </ b> C are not connected to the junction joint 34, and are in a state of hanging downward from the slab 28.

  Since the siphon drain pipes 16B and 16C have the same configuration as that of the siphon drain pipe 16A, the same reference numerals are assigned the same reference numerals with the same reference numerals, and the description thereof is omitted.

  An inspection method for such a siphon drainage system 10 will be described.

  First, the lower end portions (downstream end portions) of the pipes 32A and 32B of the siphon drain pipes 16A and 16B are connected to each other. Specifically, as shown in FIG. 3, the lower end portion of the soot tube 32A is fitted to one end portion of the L-shaped joint 36 and joined with an adhesive. Similarly, one end of the L-shaped joint 38 and the lower end of the soot tube 32B are joined.

  Further, the drainage pipe 40 is inserted between the other ends of the L-shaped joints 36 and 38 and joined to each other with an adhesive. In this way, the soot tube 32A and the soot tube 32B are connected. As a result, the siphon drain pipe 16A and the siphon drain pipe 16B communicate with each other. Hereinafter, the combination of the L-shaped joints 36 and 38 and the drain pipe 40 may be referred to as a “connection pipe 42”.

  Similarly, the lower end portion of the soot pipe 32C of the siphon drain pipe 16C is, as shown in FIGS. 1 and 4, siphon drainage of another storage tank 44 communicated with the other watering device 12D via the siphon drain pipe 16D. It connects with the lower end part of the soot pipe 32D which comprises the pipe | tube 16D. Thereby, the siphon drain pipe 16C and the siphon drain pipe 16D are communicated.

  In this state, water W (hereinafter, “W” is omitted to avoid complexity) is injected into the storage portions 20A and 20C of the storage tank 14. At this time, the lower end portion of the soot pipe 32A of the siphon drain pipe 16A communicated with the reservoir 20A is connected (communicated) with the lower end of the soot pipe 32B of the siphon drain pipe 16B. Further, water is not injected into the reservoir 20B to which the siphon drain pipe 16B is connected, and the lid of the storage tank 14 is opened to inject water, so that the reservoir 20B is open to the atmosphere. (Not blocked).

  Therefore, the air present in the siphon drain pipe 16A is discharged from the connection pipe 42 to the storage section 20B through the vertical pipe 32B and the horizontal pull pipe 30B of the siphon drain pipe 16B by the injected water. Therefore, as shown in FIG. 5, the water injected into the reservoir 20A smoothly flows into the siphon drain pipe 16A (the horizontal pull pipe 30A and the dredger pipe 32A).

  As a result, as shown in FIG. 6, the horizontal pipes 30A and 30B and the dredge pipes 32A and 32B of the siphon drain pipes 16A and 16B are filled with water injected into the reservoir 20A.

  Similarly, as shown in FIG. 7, by injecting water into the reservoir 20C, the siphon drain pipe 16C and the siphon drain pipe 16D's horizontal pull pipes 30C and 30D and the dredge pipes 32C and 32D are filled with water.

  Here, a full water test can be performed by visual observation of the siphon drain pipes 16A to 16D.

  In addition, after completion | finish of a test, each pipe 32A-32D can cut | disconnect the connection pipe 42 by cut | disconnecting in the cutting position above an adhesion part of the L-shaped couplings 36 and 38. FIG. In addition, since the length of the soot pipes 32A-32D is formed longer than predetermined length, it can be connected to the junction joint 34 by cutting.

  Therefore, 32A-32D is connected to the junction joint 34 after cutting.

  Thus, in the inspection method of the siphon drainage system according to the present embodiment, the lower ends of the two pipes 32A and 32B of the siphon drainage pipes 16A and 16B are connected to each other by the connection pipe 42. Therefore, even in the siphon drain pipes 16A and 16B having a small diameter in order to generate the siphon force, the water injection side (the storage part 20A in this embodiment) and the opposite side (the storage part 20B in this embodiment) are on the atmosphere. It is open (not closed). As a result, the air inside the siphon drain pipes 16A and 16B is easily discharged, and the water can flow smoothly to fill the water.

  Moreover, since the two siphon drain pipes 16A and 16B (16C and 16D) can be filled with water at a time and two leaks can be inspected, the inspection efficiency is improved.

  Further, since the part that is open to the atmosphere (not closed) is the storage part 20B or the storage tank 44 of the storage tank 14, water leaks from the end of the horizontal pulling pipe 30B of the siphon drain pipe 16B to the storage part 20B when the water is full. However, there is no risk of wetting the slab 28.

  In this embodiment, the full water test (visually) is performed, but a water pressure test may be performed. Further, the airtight inspection may be performed by sending a gas such as smoke instead of the liquid.

  When the water pressure test is performed, after the siphon drain pipes 16A and 16B (16C and 16D) are filled with water, the storage unit 20B (storage tank 44) side is closed with a stopper or the like, and the storage unit 20A on the water injection side. After attaching the pump to (20C) and pressurizing it, the presence or absence of water leakage can be confirmed by measuring the pressure fluctuation.

  Similarly, when an airtight test is performed, one end of the siphon drain pipes 16A and 16B (16C and 16D), for example, the storage section 20B (storage tank 44) side is closed with a plug or the like, and the other end The presence or absence of leakage can be confirmed by attaching a pressure gauge to the storage unit 20A (20C), which is a unit, and measuring the pressure fluctuation.

  Furthermore, when performing a smoke test etc., smoke is made to flow in from one edge part of siphon drain pipe 16A, 16B (16C, 16D), for example, storage part 20A (20C), and storage part 20B (storage tank 44). After confirming the arrival of smoke, the inspection is performed by filling the siphon drain pipes 16A, 16B (16C, 16D) with the smoke by closing the storage parts 20A, 20B (reservoir 20C, storage tank 44). .

  In the case of the full water test, the presence or absence of water leakage can be confirmed not only by visual observation but also by a change in the liquid level of the reservoir 20A (20C).

  In the present embodiment, the inspection is performed using water, but other liquids such as colored water may be used.

  Furthermore, in this embodiment, water was poured into the siphon drain pipes 16A to 16D by pouring water into the reservoirs 20A and 20C of the reservoir 14, but water was injected from the opposite reservoir 20B and reservoir 44. You may do it. Moreover, you may inject | pour water from the waste_water | drain introduction pipe | tubes 24A-24D connected to the storage tanks 14 and 44, or the water around tools 12A-12D.

[Second Embodiment]

  An inspection method for a siphon drainage system according to a second embodiment of the present invention will be described with reference to the drawings. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Moreover, 2nd Embodiment demonstrates only a structure different from 1st Embodiment, and its effect | action.

  The only difference from the first embodiment is that the other party to which the siphon drain pipe 16C is connected is different, so the system will be described.

  The counterpart to which the siphon drain pipe 16C is connected is a pressure drain pipe 52 that pumps and drains water by a pump 50, as shown in FIG. That is, the watering device 12E is connected to the pump 50 via the drainage introduction pipe 24E. At the time of inspection, the pump 50 is not connected to the pressure drain pipe 52.

Similarly to the siphon drain pipe 16C, the pressure drain pipe 52 connected to the pump 50 is composed of a non-gradient horizontal pulling pipe 30E parallel to the slab 28 and a soot pipe 32E.

  Therefore, the siphon drain pipe 16C and the pressure drain pipe 52 can be obtained by pouring water into the storage section 20C by connecting the lower ends of the siphon drain pipe 16C and the dredge pipes 32C and 32E of the pressure drain pipe 52 with the connection pipe 42. Can be easily filled with water.

  In the present embodiment, the siphon drain pipe 16C (soot pipe 32C) is connected to the soot pipe 32E of the pressure-feed drain pipe 52, but is not limited thereto.

  For example, as shown in FIG. 9, it can also be connected to a normal drain pipe 70 that does not use siphon force (uses a gradient). That is, as shown in FIG. 9, the lateral branch pipe 74 communicated with the plurality of water-circulating instruments 12F and 12G via the instrument drain pipes 72F and 72G and provided with a downward slope, and the downstream end portion of the lateral branch pipe 74 A vertical tube 76 extending in the vertical direction is provided.

  In the case where the lower end portion of the drain pipe 70 and the lower pipe 32C of the siphon drain pipe 16C are connected by the connecting pipe 42, the siphon drain pipe 16C is opened to the atmosphere through the drain pipe 70 even with the watering devices 12F and 12G. It will be.

  In this case, since the water-surrounding devices 12F and 12G are higher than the storage tank 14 (reservoir 20C), by injecting water from the water-surrounding devices 12F and 12G, the device drain pipes 72F and 72G. Water reaches the reservoir 20C through the drain pipe 70 and the siphon drain pipe 16C. Thus, it can be seen that the drain pipe 70 and the siphon drain pipe 16C are filled with water.

  Therefore, it is possible to easily inspect up to the normal drain pipe 70 together with the siphon drain pipe 16C.

[Third embodiment]

  An inspection method for a siphon drainage system according to a third embodiment of the present invention will be described with reference to the drawings. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Moreover, 2nd Embodiment demonstrates only a structure different from 1st Embodiment, and its effect | action.

  The difference from the first embodiment is that the other party to which the siphon drain pipe 16C is connected is different, and this will be described.

  In the siphon drainage system 80, the storage tank 14 is closed by a lid 82 as shown in FIG. Further, a vent pipe 84 is communicated with the lid 82. The vent pipe 84 communicates with the standing pipe 18 via the junction joint 34.

  The ventilation pipe 84 is pulled down from the upper part of the lid 82 to the slab 28 along the storage tank 14, and is then arranged in a non-gradient manner in parallel with the slab 28, and downstream of the horizontal drawing pipe 30F. It includes a soot tube 32F that extends continuously downward from the side end.

  An inspection method of the siphon drainage system 80 configured as described above will be described.

  In this case, first, the siphon drain pipes 16A and 16B are filled with water by pouring water into the storage section 20A after connecting the pipes 32A and 32B of the siphon drain pipes 16A and 16B with the connection pipe 42. it can.

  After the inspection of the siphon drain pipes 16A and 16B is completed, the horizontal pull pipe 30B of the siphon drain pipe 16B is pulled out from the storage tank 14 (reservoir 20B), and instead the horizontal pull pipe 30F of the vent pipe 84 is stored in the storage tank 14 (reservoir 20B). ) Is inserted (connected).

  Therefore, the siphon drain pipe 16C communicates with the storage section 20B by connecting the siphon drain pipe 16C and the lower ends of the pipes 32C and 32F of the vent pipe 84. Therefore, by injecting water into the reservoir 20C, the water reaches the reservoir 20B through the siphon drain pipe 16C and the vent pipe 84, and the siphon drain pipe 16C and the vent pipe 84 can be filled. After the inspection, the ventilation pipe 84 is extracted from the storage section 20B and attached to the lid 82, and the siphon drain pipe 16B is attached to the storage section 20B again.

  In addition, when the storage tank 14 is closed at the time of inspection (the lid is not removed), the drain introduction pipe 24C or the water supply apparatus can be used if the storage tank 14 and the water supply apparatuses 12A to 12C are connected. The siphon drain pipes 16B and 16C may be filled by injecting water from 12C.

  Furthermore, when performing an airtight test, the communication part of the storage part 20B and the siphon drain pipe 16B is closed, and a pump is installed on the storage part 20C side to pressurize the siphon drain pipes 16B and 16C to a predetermined pressure. After that, perform a leak test by measuring the pressure change.

[Fourth embodiment]

  An inspection method for a siphon drainage system according to a fourth embodiment of the present invention will be described with reference to the drawings. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Moreover, 4th Embodiment demonstrates only a structure different from 1st Embodiment, and its effect | action.

  In the inspection method of the siphon drainage system according to the present embodiment, as shown in FIG. 11, the siphon drain pipes 16B and 16C are removed from the storage tank 14 during the inspection, and the upstream ends of the horizontal pull pipes 30B and 30C are connected to the connecting pipe 42. Connect with.

  Thereby, all the siphon drain pipes 16A to 16D are communicated. Therefore, all the siphon drain pipes 16A to 16D can be filled with water only by pouring water into the reservoir 20A.

 [Fifth Embodiment]

  An inspection method for a siphon drainage system according to a fifth embodiment of the present invention will be described with reference to the drawings. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the fifth embodiment, only the configuration different from the first embodiment and the operation thereof will be described.

  In the inspection method of the siphon drainage system according to the present embodiment, as shown in FIG. 12, L-shaped joints 36 and 38 are attached to the lower ends of the pipes 32A and 32C of the siphon drainage pipes 16A and 16C during the inspection. Further, a T-shaped joint 92 is attached to the lower end portion of the soot pipe 32B of the siphon drain pipe 16B. Drain pipes 40, 40 are attached between the L-shaped joint 36 and the T-shaped joint 92 and between the L-shaped joint 38 and the T-shaped joint 92.

  By doing in this way, siphon drain pipe 16A-16C will be connected by the lower end part of the soot pipes 32A-32C. As a result, the siphon drain pipes 16 </ b> A to 16 </ b> C are filled with water only by injecting water into the storage unit 20 </ b> A.

  Although a series of embodiments has been described with water, it may be connected with another liquid such as an antifreeze liquid. Also,

10 Siphon Drainage System 12A-12F Watering Equipment 14 Reservoir 16A-16D Siphon Drainage Pipe (Piping)
30A-30D Horizontally drawn pipe 32A-32D Steel pipe (pipe)
42 Connecting pipe 52 Pressure drain pipe (pipe)
70 Drain pipe (pipe)
84 Vent pipe (pipe)

Claims (7)

A horizontal pipe that discharges the drainage from the watering device in a substantially horizontal direction;
Connected to the downstream end of each of the horizontal pipes, and a vertical pipe arranged vertically below,
A method for inspecting a siphon drainage system comprising:
A first step of connecting a downstream end of another pipe whose upstream end is open to the atmosphere and a downstream end of the soot pipe;
A second step of flowing a test fluid from an upstream end of a horizontal pipe or other pipe continuous with the soot pipe;
After the inspection fluid reaches the upstream end of the other pipe or the horizontal pipe, a third step of checking whether there is a fluid leak in the horizontal pipe, the vertical pipe and the other pipe. When,
A method for inspecting a siphon drainage system comprising:   The siphon drainage system inspection method according to claim 1, wherein the inspection fluid is a liquid.   The siphon drainage system inspection method according to claim 1 or 2, wherein a plurality of the other pipes are provided, and a downstream end of the dredger pipe and a downstream end of the plurality of pipes are connected by a connection pipe.   The siphon drainage system inspection method according to any one of claims 1 to 3, wherein in the first step, the other pipe connected to the downstream end of the dredger is another dredger.   The siphon drainage system inspection method according to any one of claims 1 to 4, wherein the horizontal pipe is connected to a storage tank that temporarily stores drainage from a watering device.   In the third step, the test fluid fills the dredging pipe, the horizontal pulling pipe, and the other pipe with the test fluid, closes an upstream end of the other pipe, and measures a pressure fluctuation of the test fluid. The inspection method of the siphon drainage system according to any one of claims 1 to 5. A horizontal pipe that discharges the drainage from the watering device in a substantially horizontal direction;
Connected to the downstream end of each of the horizontal pipes, and a vertical pipe arranged vertically below,
A method for inspecting a siphon drainage system comprising:
A first step of connecting a downstream end of another pipe whose upstream end is open to the atmosphere and a downstream end of the soot pipe;
A second step of closing one of the upstream ends of the horizontal pipe or other pipes continuous with the pipe;
The horizontal draw pipe is measured by pressurizing the gas inside the horizontal pipe, the horizontal draw pipe and the other pipe from the other upstream end of the horizontal draw pipe or the other pipe and measuring the pressure fluctuation. A third step of inspecting whether there is a fluid leak in the vertical pipe and the other pipe;
A method for inspecting a siphon drainage system comprising:

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